diff --git a/ohos/vap/.gitignore b/ohos/vap/.gitignore
new file mode 100644
index 00000000..d2ff2014
--- /dev/null
+++ b/ohos/vap/.gitignore
@@ -0,0 +1,12 @@
+/node_modules
+/oh_modules
+/local.properties
+/.idea
+**/build
+/.hvigor
+.cxx
+/.clangd
+/.clang-format
+/.clang-tidy
+**/.test
+/.appanalyzer
\ No newline at end of file
diff --git a/ohos/vap/AppScope/app.json5 b/ohos/vap/AppScope/app.json5
new file mode 100644
index 00000000..1ebb8e62
--- /dev/null
+++ b/ohos/vap/AppScope/app.json5
@@ -0,0 +1,10 @@
+{
+  "app": {
+    "bundleName": "com.openharmony.vap",
+    "vendor": "example",
+    "versionCode": 1000000,
+    "versionName": "1.1.3",
+    "icon": "$media:app_icon",
+    "label": "$string:app_name"
+  }
+}
diff --git a/ohos/vap/AppScope/resources/base/element/string.json b/ohos/vap/AppScope/resources/base/element/string.json
new file mode 100644
index 00000000..1080233f
--- /dev/null
+++ b/ohos/vap/AppScope/resources/base/element/string.json
@@ -0,0 +1,8 @@
+{
+  "string": [
+    {
+      "name": "app_name",
+      "value": "MyApplication"
+    }
+  ]
+}
diff --git a/ohos/vap/AppScope/resources/base/media/app_icon.png b/ohos/vap/AppScope/resources/base/media/app_icon.png
new file mode 100644
index 00000000..cd45accb
Binary files /dev/null and b/ohos/vap/AppScope/resources/base/media/app_icon.png differ
diff --git a/ohos/vap/COMMITTERS.md b/ohos/vap/COMMITTERS.md
new file mode 100644
index 00000000..c10d0065
--- /dev/null
+++ b/ohos/vap/COMMITTERS.md
@@ -0,0 +1,8 @@
+## Committers列表
+
+### 以下是此项目的committer人员
+不区分先后顺序
+
+- [MaDiXin](https://gitee.com/MaDiXin)
+- [XiaFeng](https://gitee.com/xiafeng_xf_admin)
+- [ZhuChengCheng](https://gitee.com/zhu_chengcheng)
diff --git a/ohos/vap/LICENSE b/ohos/vap/LICENSE
new file mode 100644
index 00000000..f433b1a5
--- /dev/null
+++ b/ohos/vap/LICENSE
@@ -0,0 +1,177 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
diff --git a/ohos/vap/LICENSE.MIT b/ohos/vap/LICENSE.MIT
new file mode 100644
index 00000000..5844fa83
--- /dev/null
+++ b/ohos/vap/LICENSE.MIT
@@ -0,0 +1,21 @@
+MIT License 
+
+Copyright (c) 2013-2024 Niels Lohmann
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/ohos/vap/LICENSE.txt b/ohos/vap/LICENSE.txt
new file mode 100644
index 00000000..f433b1a5
--- /dev/null
+++ b/ohos/vap/LICENSE.txt
@@ -0,0 +1,177 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
diff --git a/ohos/vap/OAT.xml b/ohos/vap/OAT.xml
new file mode 100644
index 00000000..171deca5
--- /dev/null
+++ b/ohos/vap/OAT.xml
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <oatconfig>
+        <licensefile></licensefile>
+        <policylist>
+            <policy name="projectPolicy" desc="">
+                <policyitem type="license" name="MIT" path=".*" desc="license under the MIT"/>
+            </policy>
+            <policy name="projectPolicy" desc="">
+                <policyitem type="compatibility" name="GPL-2.0+" path=".*" desc="Process that runs independently, invoked by the X process."/>
+                <policyitem type="compatibility" name="Apache-2.0" path=".*" desc="不影响兼容性"/>
+                <policyitem type="compatibility" name="BSDStyleLicense" path=".*" desc="不影响兼容性" />
+                <policyitem type="compatibility" name="MIT" path=".*" desc="不影响兼容性" />
+                <policyitem type="compatibility" name="GPLStyleLicense" path=".*" desc="不影响兼容性" />
+            </policy>
+        </policylist>
+
+        <filefilterlist>
+            <filefilter name="defaultFilter" desc="Files not to check">
+                <filteritem type="filename" name="*.json|*.txt|*.gitignore|*.node-version|*.prettierrc|*.tool-versions|*.prettierignore|*.watchmanconfig|*.lock|*.podspec|*.pdf|*.har|*.gif|*.npmignore|*.hpp" desc="desc files"/>
+                <filteritem type="filename" name="LICENSE.MIT" desc="版权文件，不添加版权头"/>
+                <filteritem type="filepath" name="src/.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="lib/.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="scripts/.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="js/*.ts" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="src/*.js" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="src/*.ts" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="*.js" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filename" name="*.js" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="*.ts" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filename" name="*.ts" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="index.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filename" name="*.json5" desc="hvigor配置文件,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filename" name="*/*.json5" desc="hvigor配置文件,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="types/.*" desc="非业务代码，不添加许可证头"/>
+                <filteritem type="filepath" name="vap_module/BuildProfile.ets" desc="非业务代码，不添加许可证头"/>
+                <filteritem type="filename" name="CODEOWNERS" desc="非业务代码，不添加许可证头"/>
+                <filteritem type="filepath" name="harmony/vap/src/.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="harmony/vap/index.ets" desc="hvigor构建脚本,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/ts.ts" desc="hvigor构建脚本,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/BuildProfile.ets" desc="hvigor构建脚本,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/hvigorfile.ts" desc="hvigor构建脚本,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filename" name="harmony/vap/*.json5" desc="工程项目文件,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/src/main/cpp/generated/.*" desc="Codegen生成文件,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/src/main/ets/generated/.*" desc="Codegen生成文件,不手动修改"/>
+                <filteritem type="filepath" name="entry/src/main/resources/base/media/*.*" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="vap_module/src/main/resources/base/media/*.*" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="entry/src/main/resources/rawfile/*.*" desc="示例demo文件"/>
+                <filteritem type="filepath" name="entry/src/ohosTest/resources/base/media/icon.png" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="AppScope/resources/base/media/app_icon.png" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="vap_module/src/ohosTest/resources/base/media/icon.png" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="imgs/crop.png" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="imgs/icon.png" desc="项目工程默认图片文件"/>
+            </filefilter>
+
+            <filefilter name="defaultPolicyFilter" desc="Filters for compatibility,license header policies">
+                <filteritem type="filename" name="*.json|*.txt|*.gitignore|*.node-version|*.prettierrc|*.tool-versions|*.prettierignore|*.watchmanconfig|*.lock|*.podspec|*.pdf|*.har|*.gif|*.npmignore|*.hpp" desc="desc files"/>
+                <filteritem type="filename" name="LICENSE.MIT" desc="版权文件，不添加版权头"/>
+                <filteritem type="filepath" name="src/.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="lib/.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="scripts/.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="js/*.ts" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="src/*.js" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="src/*.ts" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="*.js" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filename" name="*.js" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="*.ts" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filename" name="*.ts" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="index.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filename" name="*.json5" desc="hvigor配置文件,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filename" name="*/*.json5" desc="hvigor配置文件,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="types/.*" desc="非业务代码，不添加许可证头"/>
+                <filteritem type="filepath" name="vap_module/BuildProfile.ets" desc="非业务代码，不添加许可证头"/>
+                <filteritem type="filename" name="CODEOWNERS" desc="非业务代码，不添加许可证头"/>
+                <filteritem type="filepath" name="harmony/vap/src/.*" desc="第三方开源软件源码，不修改版权头，以防有修改版权风险"/>
+                <filteritem type="filepath" name="harmony/vap/index.ets" desc="hvigor构建脚本,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/ts.ts" desc="hvigor构建脚本,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/BuildProfile.ets" desc="hvigor构建脚本,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/hvigorfile.ts" desc="hvigor构建脚本,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filename" name="harmony/vap/*.json5" desc="工程项目文件,DevEco Studio自动生成,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/src/main/cpp/generated/.*" desc="Codegen生成文件,不手动修改"/>
+                <filteritem type="filepath" name="harmony/vap/src/main/ets/generated/.*" desc="Codegen生成文件,不手动修改"/>
+                <filteritem type="filepath" name="entry/src/main/resources/base/media/*.*" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="vap_module/src/main/resources/base/media/*.*" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="entry/src/main/resources/rawfile/*.*" desc="示例demo文件"/>
+                <filteritem type="filepath" name="entry/src/ohosTest/resources/base/media/icon.png" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="AppScope/resources/base/media/app_icon.png" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="vap_module/src/ohosTest/resources/base/media/icon.png" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="imgs/crop.png" desc="项目工程默认图片文件"/>
+                <filteritem type="filepath" name="imgs/icon.png" desc="项目工程默认图片文件"/>
+            </filefilter>
+
+            <filefilter name="binaryFileTypePolicyFilter" desc="Filters for copyright header policies">
+            </filefilter>
+        </filefilterlist>
+    </oatconfig>
+</configuration>
diff --git a/ohos/vap/README.OpenSource b/ohos/vap/README.OpenSource
new file mode 100644
index 00000000..74c295fc
--- /dev/null
+++ b/ohos/vap/README.OpenSource
@@ -0,0 +1,12 @@
+[
+    {
+        "Name": "VAP",
+        "License": "MIT License",
+        "License File": " LICENSE.txt ",
+        "Version Number": "2.0.28",
+        "Owner" : "xiafeng@huawei.com",
+        "Upstream URL": "https://github.com/Tencent/vap",
+        "Description": "VAP is a implementing special effect animations. It features a high compression rate and hardware decoding."
+        "Dependencies": ["json"]
+    }
+]
\ No newline at end of file
diff --git a/ohos/vap/README.md b/ohos/vap/README.md
new file mode 100644
index 00000000..94ac8958
--- /dev/null
+++ b/ohos/vap/README.md
@@ -0,0 +1,272 @@
+<h1 align="center">
+  OHOS-VAP
+</h1>
+
+<p align="center">
+ <a href="./README.md">English</a> | <a href="./README_zh.md">简体中文</a>
+</p>
+
+<p align="center">
+  <a href="https://github.com"><img src="https://img.shields.io/badge/license-Apache%202.0-blue?style=flat-square or later-orange" alt="License"></a>
+  <a><img src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg"/></a>
+</p>
+
+
+In the era of digital entertainment and online interaction, the quality of visual effects directly impacts user experience. `OHOS-VAP` is a powerful animation particle effect rendering component built on `OpenHarmony` using `OpenGL` technology and specialized algorithms. Not only does it provide stunning animation effects for applications, but it also creates an immersive visual experience for users.
+
+<div style="display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;">
+<img loading="lazy" width="200px" src='./imgs/1.gif' />
+<img loading="lazy" width="200px" src='./imgs/2.gif' />
+<img loading="lazy" width="200px" src='./imgs/5.gif' />
+<img loading="lazy" width="200px" src='./imgs/4.gif' />
+</div>
+
+## Key Features
+
+- Compared to Webp and Apng animation schemes, it offers high compression rates (smaller assets) and hardware decoding (faster decoding) advantages.
+- Compared to Lottie, it can achieve more complex animation effects (like particle effects).
+- High-performance rendering: With the powerful capabilities of OpenGL, OHOS-VAP achieves efficient particle effect rendering, ensuring a smooth user experience across various devices.
+- Easy integration: OHOS-VAP has a simple design, making it easy to integrate with existing projects, helping developers quickly implement stunning animation effects and enhance application appeal.
+- Multi-platform support: Compatible with multiple devices, whether on phones, tablets, or computers, OHOS-VAP can provide consistent visual effects, facilitating cross-terminal application development.
+
+## Application Scenarios
+
+- Live broadcast effects: On major short video platforms such as Douyin, Kuaishou, and others, use OHOS-VAP to add cool gift effects to live broadcasts, enhancing audience interaction and increasing the fun of the broadcast.
+- E-commerce promotional activities: In gaming and e-commerce platform events, use OHOS-VAP to achieve stunning product display effects, attract users' attention, and drive sales conversions.
+- Game experience enhancement: Add particle effects to game scenes to enhance overall gaming experience, immersing players in a more vivid virtual world.
+  ![apps](./imgs/icon.png)
+
+## Build Dependencies
+
+- IDE Version: DevEco Studio 5.0.1.403
+- SDK Version: ohos_sdk_public 5.0.0 (API Version 12 Release)
+- Developers can call the `this.xComponentContext.play()` interface to implement custom video parameter paths (supports network URLs).
+
+### C/C++ Layer Directory Structure
+
+```
+├─include				# Mask, Mix, Renderer, Utility class header files storage
+│  ├─mask
+│  ├─mix
+│  ├─render
+│  └─util
+├─manager 				# xcomponent life cycle management
+├─mask 					# Implementation of masking
+├─mix 					# Implementation of mixing
+├─napi					# Napi layer function encapsulation
+├─render				# Implementation of the renderer
+├─types   				# Interface declarations
+│  └─libvap	# so file interface declarations
+└─util					# Implementation of utility classes
+```
+
+## Source code download
+1. This project relies on json library, which is introduced by `git submodule`, and `--recursive` parameter should be added when downloading code.
+```shell
+git clone --recursive https://gitcode.com/openharmony-tpc/openharmony_tpc_samples.git
+```
+2. Start compiling the project.
+
+## Quick Start
+1. For API mode, refer to the example code [API Mode](./示例代码.ets)
+2. For component mode, refer to the example code [Component Mode](./组件模式.ets), for easier use.
+
+### Importing Header Files
+
+Import header files in the usage file.
+
+```typescript
+import { VAPPlayer,MixData } from '@ohos/vap';
+```
+
+### Define VAPPlayer Component
+
+```typescript
+private vapPlayer: VAPPlayer | undefined = undefined;
+@State buttonEnabled: boolean = true; // This state controls whether the button can be clicked
+@State src: string = "/storage/Users/currentUser/Documents/1.mp4"; // This path can be a network path
+```
+
+### Configure Network Resource Download Path
+```typescript
+// For specific usage, refer to the example code
+// Get sandbox path
+let context : Context = getContext(this) as Context
+let dir = context.filesDir
+```
+
+### Interface
+
+```typescript
+private xComponentId: string = 'xcomponentId_' + util.generateRandomUUID()
+XComponent({
+  id: this.xComponentId, // Unique identifier
+  type: 'surface',
+  libraryname: 'vap'
+})
+  .onLoad((xComponentContext?: object | Record<string, () => void>) => {
+    if (xComponentContext) {
+      this.vapPlayer = new VAPPlayer(this.xComponentId)
+      this.vapPlayer.setContext(xComponentContext)
+      this.vapPlayer.sandDir = dir // Set storage path
+    }
+  })
+  .backgroundColor(Color.Transparent)
+  .height('100%')
+  .visibility(this.buttonEnabled ? Visibility.Hidden: Visibility.Visible)
+  .width('80%')
+```
+
+### Set Video Alignment Mode
+
+  Set the video alignment mode through the `setFitType` interface (supports FIT_XY, FIT_CENTER, CENTER_CROP)
+![](./imgs/crop.png)
+
+  **This interface needs to be used before `play`.**
+
+```typescript
+this.vapPlayer?.setFitType(fitType)
+```
+
+### Usage
+
+#### Using the Play Interface
+Customizing the order of merged animation information requires specifying `tag`, which is the information specified during video creation, accessible via `this.vapPlayer.getVideoInfo(uri)`. 
+When the merged information is text, you can configure the text alignment, color, and size.
+```typescript
+let opts: Array<MixData> = [{
+  tag: 'sImg1',
+  imgUri: getContext(this).filesDir + '/head1.png'
+}, {
+  tag: 'abc',
+  txt: "星河Harmony NEXT",
+  imgUri: getContext(this).filesDir + '/head1.png'
+}, {
+  tag: 'sTxt1',
+  txt: "星河Harmony NEXT",
+  textAlign: this.textAlign,
+  fontWeight: this.fontWeight,
+  color: this.color
+}];
+this.buttonEnabled = false;
+
+this.vapPlayer?.play(getContext(this).filesDir + "/vapx.mp4", opts, () => {
+  this.buttonEnabled = true;
+});
+```
+
+#### Using Pause
+
+```typescript
+this.vapPlayer?.pause()
+```
+
+#### Using Stop
+
+```typescript
+this.vapPlayer?.stop()
+```
+
+#### Listening for Gestures
+
+- During animation playback, if the clickable area is tapped and a merged animation resource is clicked, a callback will return that resource (string).
+- **This interface needs to be used before `play`.**
+```typescript
+this.vapPlayer?.on('click', (state)=>{
+  if(state) {
+    console.log('js get onClick: ' + state)
+  }
+})
+```
+
+#### Listening for Playback Lifecycle Changes
+**This interface needs to be used before `play`.**
+```typescript
+this.vapPlayer?.on('stateChange', (state, ret)=>{
+  if(state) {
+    console.log('js get on: ' + state)
+    if(ret)
+      console.log('js get on frame: ' + JSON.stringify(ret))
+  }
+})
+```
+
+- Callback parameter `state` reflects the current playback status.
+```typescript
+enum VapState {
+  UNKNOWN,
+  READY,
+  START,
+  RENDER,
+  COMPLETE,
+  DESTROY,
+  FAILED
+}
+```
+- Parameter `ret`, when `state` is `RENDER` or `START`, returns the `AnimConfig` object.
+- Parameter `ret`, when `state` is `FAILED`, reflects the current error code.
+- Parameter `ret`, other statuses will be `undefined`.
+
+#### Application Exit Background
+
+```typescript
+  onPageHide(): void {
+    console.log('[LIFECYCLE-Page] onPageHide');
+    this.vapPlayer?.stop()
+  }
+```
+You can call the `onPageHide` method in the page lifecycle.
+
+#### Compatibility Mode for Legacy Videos (alphaplayer symmetrical videos)
+```typescript
+this.vapPlayer?.setVideoMode(VideoMode.VIDEO_MODE_SPLIT_HORIZONTAL)
+```
+For older videos, it is recommended to call this interface. **This interface needs to be used before `play`.**
+
+### **Constraints and Limitations**
+Passes in the following versions:
+- DevEco Studio 5.0(5.0.3.810), SDK: API12(5.0.0.60)
+
+### **Permissions Setup**
+
+* **No configuration required if the video file is confirmed to be in the sandbox.**
+* Add permissions in the application module's `module.json5`, for example: `entry\src\main\module.json5`
+* `READ_MEDIA` to read files in the user's directory (like documents); `WRITE_MEDIA` (to download to the user's directory); `INTERNET` to download network files.
+
+```json
+"requestPermissions": [
+{
+"name": 'ohos.permission.READ_MEDIA',
+"reason": '$string:read_file',
+"usedScene": {
+"abilities": [
+"EntryAbility"
+],
+"when": "always"
+}
+},
+{
+"name": 'ohos.permission.WRITE_MEDIA',
+"reason": '$string:read_file',
+"usedScene": {
+"abilities": [
+"EntryAbility"
+],
+"when": "always"
+}
+},
+{
+"name": "ohos.permission.INTERNET"
+}
+]
+```
+
+## Compile Build
+
+- After creating the project successfully, to build run `Build -> Build Hap(s)/APP(s) -> build App(s) ` option.
+- The `/entry/build/default/outputs` will generate a `hap` package.
+- Sign and install the generated `hap` package.
+
+## Test Demo
+
+Click the `Play` button to test animation effects, and click again to enter loop playback.
diff --git a/ohos/vap/README_zh.md b/ohos/vap/README_zh.md
new file mode 100644
index 00000000..3b3c89e1
--- /dev/null
+++ b/ohos/vap/README_zh.md
@@ -0,0 +1,270 @@
+<h1 align="center">
+  OHOS-VAP
+</h1>
+
+<p align="center">
+ <a href="./README.md">English</a> | <a href="./README_zh.md">简体中文</a>
+</p>
+
+<p align="center">
+  <a href="https://github.com"><img src="https://img.shields.io/badge/license-Apache%202.0-blue?style=flat-square or later-orange" alt="License"></a>
+  <a><img src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg"/></a>
+</p>
+
+
+在数字娱乐和在线互动的时代，视觉效果的精美程度直接影响用户体验。`OHOS-VAP` 是一个基于 `OpenHarmony` 运用 `OpenGL` 技术和特殊算法打造的强大动画粒子特效渲染组件。它不仅能够为应用程序提供令人惊叹的动画效果，更为用户创造了一种身临其境的视觉享受。
+
+<div style="display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;">
+<img loading="lazy" width="200px" src='./imgs/1.gif' />
+<img loading="lazy" width="200px" src='./imgs/2.gif' />
+<img loading="lazy" width="200px" src='./imgs/5.gif' />
+<img loading="lazy" width="200px" src='./imgs/4.gif' />
+</div>
+
+## 主要特征
+
+- 相比Webp, Apng动图方案，具有高压缩率(素材更小)、硬件解码(解码更快)的优点.
+- 相比Lottie，能实现更复杂的动画效果(比如粒子特效)
+- 高性能渲染：凭借 OpenGL 的强大能力，OHOS-VAP 实现了高效的粒子特效渲染，确保流畅的用户体验，适用于各种设备。
+- 易于集成：OHOS-VAP 设计简洁，易于与现有项目集成，帮助开发者快速实现酷炫的动画效果，提升应用的吸引力。
+- 多平台支持：兼容多个设备，无论是手机、平板还是电脑，OHOS-VAP 都能提供一致的视觉效果，助力跨终端应用开发。
+
+## 应用场景
+
+- 直播间特效：在各大短视频平台中如抖音，快手，得物，企鹅电竞，利用 OHOS-VAP 为直播间增添炫酷的礼物特效，提升观众的互动体验，增加直播的趣味性。
+- 电商活动推广：在游戏领域及电商平台的活动中，使用 OHOS-VAP 实现令人惊叹的产品展示效果，吸引用户眼球，推动销售转化。
+- 游戏体验提升：为游戏场景增添粒子特效，提升整体游戏体验，让玩家沉浸在更为生动的虚拟世界中。
+  ![apps](./imgs/icon.png)
+
+## 构建依赖
+
+- IDE版本：DevEco Studio 5.0.1.403
+- SDK版本：ohos_sdk_public 5.0.0 (API Version 12 Release)
+- 对于开发人员可以调用`this.xComponentContext.play()`接口来实现自定义视频传参路径（支持网路URL）
+
+### C/C++层目录结构
+
+```
+├─include				# 遮罩 融合 渲染器 工具类头文件存放
+│  ├─mask
+│  ├─mix
+│  ├─render
+│  └─util
+├─manager 				# xcomponent 生命周期管理
+├─mask 					# 遮罩的实现
+├─mix 					# 融合实现
+├─napi					# Napi 层功能的封装
+├─render				# 渲染器的实现
+├─types   				# 接口声明
+│  └─libvap	# so文件接口声明
+└─util					# 工具类的实现0
+```
+## 源码下载
+1. 本项目依赖 json 库，通过`git submodule`引入，下载代码时需加上`--recursive`参数。
+```shell
+git clone --recursive https://gitcode.com/openharmony-tpc/openharmony_tpc_samples.git
+```
+2. 开始编译项目。
+
+## 快速使用
+1. api模式 可参考示例代码 [api模式](./示例代码.ets)
+2. 组件模式 可参考示例代码 [组件模式](./组件模式.ets),使用更便捷
+
+
+### 头文件引入
+
+在使用文件中进行头文件的引入
+
+```typescript
+import { VAPPlayer,MixData } from '@ohos/vap';
+```
+
+### 定义 VAPPlayer 组件
+
+```typescript
+private vapPlayer: VAPPlayer | undefined = undefined;
+@State buttonEnabled: boolean = true; // 该状态为控制按钮是否可以点击
+@State src: string = "/storage/Users/currentUser/Documents/1.mp4"; // 该路径可为网络路径
+```
+
+### 配置网络资源下载路径
+```typescript
+// 具体使用可参考示例代码
+// 获取沙箱路径
+let context : Context = getContext(this) as Context
+let dir = context.filesDir
+```
+### 界面
+
+```typescript
+private xComponentId: string = 'xcomponentId_' + util.generateRandomUUID()
+XComponent({
+  id: this.xComponentId, // 唯一标识
+  type: 'surface',
+  libraryname: 'vap'
+})
+  .onLoad((xComponentContext?: object | Record<string, () => void>) => {
+    if (xComponentContext) {
+      this.vapPlayer = new VAPPlayer(this.xComponentId)
+      this.vapPlayer.setContext(xComponentContext)
+      this.vapPlayer.sandDir = dir // 设置存储路径
+    }
+  })
+  .backgroundColor(Color.Transparent)
+  .height('100%')
+  .visibility(this.buttonEnabled ? Visibility.Hidden: Visibility.Visible)
+  .width('80%')
+```
+### 设置视频对齐方式
+
+  通过`setFitType`这个接口设置视频对齐方式（支持FIT_XY,FIT_CENTER,CENTER_CROP）
+![](./imgs/crop.png)
+
+  **接口需要在`play`之前使用**
+
+```typescript
+this.vapPlayer?.setFitType(fitType)
+```
+
+### 使用
+
+#### 播放接口 Play 的使用
+融合动画信息顺序自定义，需要指定 `tag`, `tag` 为视频制作时指定，该信息可通过`this.vapPlayer.getVideoInfo(uri)`
+当融合信息为字体时，可配置字体的对齐，颜色，大小
+```typescript
+let opts: Array<MixData> = [{
+  tag: 'sImg1',
+  imgUri: getContext(this).filesDir + '/head1.png'
+}, {
+  tag: 'abc',
+  txt: "星河Harmony NEXT",
+  imgUri: getContext(this).filesDir + '/head1.png'
+}, {
+  tag: 'sTxt1',
+  txt: "星河Harmony NEXT",
+  textAlign: this.textAlign,
+  fontWeight: this.fontWeight,
+  color: this.color
+}];
+this.buttonEnabled = false;
+
+this.vapPlayer?.play(getContext(this).filesDir + "/vapx.mp4", opts, () => {
+  this.buttonEnabled = true;
+});
+```
+
+#### 暂停的使用
+
+```typescript
+this.vapPlayer?.pause()
+```
+
+#### 停止的使用
+
+```typescript
+this.vapPlayer?.stop()
+```
+
+#### 监听手势
+
+- 在动画播放过程中点击播放区域，如果点击到融合动画资源，回调会返回该资源（字符串）
+- **接口需要在`play`之前使用**
+```typescript
+this.vapPlayer?.on('click', (state)=>{
+  if(state) {
+    console.log('js get onClick: ' + state)
+  }
+})
+```
+
+#### 监听播放生命周期变化
+**接口需要在`play`之前使用**
+```typescript
+this.vapPlayer?.on('stateChange', (state, ret)=>{
+  if(state) {
+    console.log('js get on: ' + state)
+    if(ret)
+      console.log('js get on frame: ' + JSON.stringify(ret))
+  }
+})
+```
+
+- 回调参数 `state` 反应当前播放的状态
+```typescript
+enum VapState {
+  UNKNOWN,
+  READY,
+  START,
+  RENDER,
+  COMPLETE,
+  DESTROY,
+  FAILED
+}
+```
+- 参数 `ret` ，当 `state` 为 `RENDER` 或 `START` 返回 `AnimConfig` 对象
+- 参数 `ret` ，当 `state` 为 `FAILED` 反应当前的错误码
+- 参数 `ret` ，其余状态为 `undefined`
+
+#### 应用退出后台
+
+```typescript
+  onPageHide(): void {
+    console.log('[LIFECYCLE-Page] onPageHide');
+    this.vapPlayer?.stop()
+  }
+```
+可在页面的生命周期中调用`onPageHide`方法
+
+#### 兼容老视频（alphaplayer 对称的视频）
+```typescript
+this.vapPlayer?.setVideoMode(VideoMode.VIDEO_MODE_SPLIT_HORIZONTAL)
+```
+对于老视频推荐调用这个接口，**接口需要在`play`之前使用**
+
+### **约束与限制**
+在下述版本通过
+- DevEco Studio 5.0(5.0.3.810), SDK: API12(5.0.0.60)
+
+### **权限设置**
+
+* **如果确定视频文件在沙箱中则不必配置**
+* 在应用模块的`module.json5`中添加权限， 例如：`entry\src\main\module.json5`
+* `READ_MEDIA` 读取用户目录下的文件（比如 文档）； `WRITE_MEDIA`（下载到用户目录下）；`INTERNET` 下载网络文件
+
+```json
+"requestPermissions": [
+{
+"name": 'ohos.permission.READ_MEDIA',
+"reason": '$string:read_file',
+"usedScene": {
+"abilities": [
+"EntryAbility"
+],
+"when": "always"
+}
+},
+{
+"name": 'ohos.permission.WRITE_MEDIA',
+"reason": '$string:read_file',
+"usedScene": {
+"abilities": [
+"EntryAbility"
+],
+"when": "always"
+}
+},
+{
+"name": "ohos.permission.INTERNET"
+}
+]
+```
+
+## 编译构建
+
+- 工程创建成功后，构建请运行 `Build -> Build Hap(s)/APP(s) -> build App(s) `选项
+- `/entry/build/default/outputs` 生成 `hap` 包
+- 签名安装生成的 `hap` 包
+
+## 测试demo
+
+点击 `Play` 按钮，测试动画效果，再次点击进入循环播放
diff --git a/ohos/vap/build-profile.json5 b/ohos/vap/build-profile.json5
new file mode 100644
index 00000000..102fb2f8
--- /dev/null
+++ b/ohos/vap/build-profile.json5
@@ -0,0 +1,36 @@
+{
+  "app": {
+    "products": [
+      {
+        "name": "default",
+        "signingConfig": "default",
+        "compileSdkVersion": 12,
+        "compatibleSdkVersion": 12,
+        "runtimeOS": "OpenHarmony"
+      }
+    ],
+    "buildModeSet": [
+      {
+        "name": "release"
+      }
+    ],
+  },
+  "modules": [
+    {
+      "name": "entry",
+      "srcPath": "./entry",
+      "targets": [
+        {
+          "name": "default",
+          "applyToProducts": [
+            "default"
+          ]
+        }
+      ]
+    },
+    {
+      "name": "vap_module",
+      "srcPath": "./vap_module",
+    }
+  ]
+}
diff --git a/ohos/vap/entry/.gitignore b/ohos/vap/entry/.gitignore
new file mode 100644
index 00000000..e2713a27
--- /dev/null
+++ b/ohos/vap/entry/.gitignore
@@ -0,0 +1,6 @@
+/node_modules
+/oh_modules
+/.preview
+/build
+/.cxx
+/.test
\ No newline at end of file
diff --git a/ohos/vap/entry/build-profile.json5 b/ohos/vap/entry/build-profile.json5
new file mode 100644
index 00000000..c92f15c3
--- /dev/null
+++ b/ohos/vap/entry/build-profile.json5
@@ -0,0 +1,14 @@
+
+{
+  "apiType" : "stageMode",
+  "buildOption" : {
+  },
+  "targets" : [
+    {
+      "name" : "default"
+    },
+    {
+      "name" : "ohosTest"
+    }
+  ]
+}
diff --git a/ohos/vap/entry/hvigorfile.ts b/ohos/vap/entry/hvigorfile.ts
new file mode 100644
index 00000000..c6edcd90
--- /dev/null
+++ b/ohos/vap/entry/hvigorfile.ts
@@ -0,0 +1,6 @@
+import { hapTasks } from '@ohos/hvigor-ohos-plugin';
+
+export default {
+    system: hapTasks,  /* Built-in plugin of Hvigor. It cannot be modified. */
+    plugins:[]         /* Custom plugin to extend the functionality of Hvigor. */
+}
diff --git a/ohos/vap/entry/obfuscation-rules.txt b/ohos/vap/entry/obfuscation-rules.txt
new file mode 100644
index 00000000..985b2aeb
--- /dev/null
+++ b/ohos/vap/entry/obfuscation-rules.txt
@@ -0,0 +1,18 @@
+# Define project specific obfuscation rules here.
+# You can include the obfuscation configuration files in the current module's build-profile.json5.
+#
+# For more details, see
+#   https://gitee.com/openharmony/arkcompiler_ets_frontend/blob/master/arkguard/README.md
+
+# Obfuscation options:
+# -disable-obfuscation: disable all obfuscations
+# -enable-property-obfuscation: obfuscate the property names
+# -enable-toplevel-obfuscation: obfuscate the names in the global scope
+# -compact: remove unnecessary blank spaces and all line feeds
+# -remove-log: remove all console.* statements
+# -print-namecache: print the name cache that contains the mapping from the old names to new names
+# -apply-namecache: reuse the given cache file
+
+# Keep options:
+# -keep-property-name: specifies property names that you want to keep
+# -keep-global-name: specifies names that you want to keep in the global scope
\ No newline at end of file
diff --git a/ohos/vap/entry/oh-package-lock.json5 b/ohos/vap/entry/oh-package-lock.json5
new file mode 100644
index 00000000..232f58dc
--- /dev/null
+++ b/ohos/vap/entry/oh-package-lock.json5
@@ -0,0 +1,18 @@
+{
+  "meta": {
+    "stableOrder": true
+  },
+  "lockfileVersion": 3,
+  "ATTENTION": "THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.",
+  "specifiers": {
+    "@ohos/vap@../vap_module": "@ohos/vap@../vap_module"
+  },
+  "packages": {
+    "@ohos/vap@../vap_module": {
+      "name": "@ohos/vap",
+      "version": "1.1.3",
+      "resolved": "../vap_module",
+      "registryType": "local"
+    }
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/oh-package.json5 b/ohos/vap/entry/oh-package.json5
new file mode 100644
index 00000000..51143c7f
--- /dev/null
+++ b/ohos/vap/entry/oh-package.json5
@@ -0,0 +1,17 @@
+{
+  "license": "Apache-2.0",
+  "devDependencies": {},
+  "author": "",
+  "name": "entry",
+  "ohos": {
+    "org": "huawei",
+    "directoryLevel": "module",
+    "buildTool": "hvigor"
+  },
+  "description": "example description",
+  "main": "",
+  "version": "1.1.3",
+  "dependencies": {
+    "@ohos/vap": "file:../vap_module"
+  }
+}
diff --git a/ohos/vap/entry/src/main/ets/common/FileUtil.ts b/ohos/vap/entry/src/main/ets/common/FileUtil.ts
new file mode 100644
index 00000000..45a15bb1
--- /dev/null
+++ b/ohos/vap/entry/src/main/ets/common/FileUtil.ts
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { BusinessError } from '@kit.BasicServicesKit';
+import common from '@ohos.app.ability.common'
+
+import fs from '@ohos.file.fs';
+import { http } from '@kit.NetworkKit';
+
+export class FileUtil {
+
+   copyRawfileToContext(context:common.UIAbilityContext) {
+    let filePath = context.filesDir;
+    try {
+      context.resourceManager.getRawFileList("").then((value: Array<string>) => {
+        value.forEach(fileName => {
+          let fileContent: ArrayBufferLike = context.resourceManager.getRawFileContentSync(fileName).buffer;
+          let newFile = fs.openSync(filePath + "/" + fileName, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
+          fs.writeSync(newFile.fd, fileContent);
+          fs.close(newFile);
+        });
+
+      }).catch((error: BusinessError) => {
+        console.error(`promise getRawFileList failed, error code: ${error.code}, message: ${error.message}.`);
+      });
+    } catch (error) {
+      let code = (error as BusinessError).code;
+      let message = (error as BusinessError).message;
+      console.error(`promise getRawFileList failed, error code: ${code}, message: ${message}.`);
+    }
+  }
+
+  async downloadFile(url:string,context:common.UIAbilityContext): Promise<string>{
+    const fileName = this.extractFileName(url);
+    let filePath = context.filesDir+"/" + fileName
+    let res = fs.accessSync(filePath);
+    if (res) {
+      return filePath;
+    }
+    let httpRequest = http.createHttp();
+    try {
+      let data = await httpRequest.request(url, {
+        method: http.RequestMethod.GET,
+        expectDataType: http.HttpDataType.ARRAY_BUFFER,
+      })
+      let buf:ArrayBuffer = data.result as ArrayBuffer;
+      let file = fs.openSync(filePath, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
+      fs.writeSync(file.fd, buf);
+      fs.closeSync(file);
+    } catch (err) {
+      console.error("accessSync failed with error message: " + err.message + ", error code: " + err.code);
+      filePath = ''
+    } finally {
+      httpRequest.destroy();
+    }
+    return filePath
+  }
+
+   extractFileName(url: string): string {
+    const matches = url.match(/\/([^\/?#]+)[^\/]*$/);
+    if (matches && matches.length > 1) {
+      return matches[1];
+    }
+    return '';
+  }
+
+}
+
+
diff --git a/ohos/vap/entry/src/main/ets/common/LogUtil.ets b/ohos/vap/entry/src/main/ets/common/LogUtil.ets
new file mode 100644
index 00000000..8eefae7b
--- /dev/null
+++ b/ohos/vap/entry/src/main/ets/common/LogUtil.ets
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export class LogUtil {
+  public static OFF: number = 1
+  public static LOG: number = 2
+  public static DEBUG: number = 3
+  public static INFO: number = 4
+  public static WARN: number = 5
+  public static ERROR: number = 6
+  public static ALL: number = 7
+  public static mLogLevel:number = LogUtil.ALL;
+
+  public static debug(message: string, ...args: Object[]) {
+    if (LogUtil.mLogLevel >= LogUtil.DEBUG) {
+      console.debug(message, args)
+    }
+  }
+
+  public static info(message: string, ...args: Object[]) {
+    if (LogUtil.mLogLevel >= LogUtil.INFO) {
+      console.info(message, args)
+    }
+  }
+
+  public static log(message: string, ...args: Object[]) {
+    if (LogUtil.mLogLevel >= LogUtil.LOG) {
+      console.log(message, args)
+    }
+  }
+
+  public static warn(message: string, ...args: Object[]) {
+    if (LogUtil.mLogLevel >= LogUtil.WARN) {
+      console.warn(message, args)
+    }
+  }
+
+  // error 不做拦截
+  public static error(message: string, ...args: Object[]) {
+    if(LogUtil.mLogLevel >= LogUtil.ERROR) {
+      console.error(message, args)
+    }
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/ets/entryability/EntryAbility.ts b/ohos/vap/entry/src/main/ets/entryability/EntryAbility.ts
new file mode 100644
index 00000000..9b1ae7d6
--- /dev/null
+++ b/ohos/vap/entry/src/main/ets/entryability/EntryAbility.ts
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2023 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import UIAbility from '@ohos.app.ability.UIAbility';
+import window from '@ohos.window';
+import hilog from '@ohos.hilog';
+import nativerender from 'libvap.so';
+import { FileUtil }  from '../common/FileUtil'
+export enum ContextType {
+  APP_LIFECYCLE,
+  PAGE_LIFECYCLE,
+}
+
+const nativeAppLifecycle = nativerender.getContext(ContextType.APP_LIFECYCLE as any);
+
+export default class EntryAbility extends UIAbility {
+  onCreate(want, launchParam) {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
+    nativeAppLifecycle.onCreate();
+    globalThis.abilityWant = want;
+    let fileUtil = new FileUtil();
+    fileUtil.copyRawfileToContext(this.context);
+  }
+
+  onDestroy() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onDestroy');
+    nativeAppLifecycle.onDestroy();
+  }
+
+  onWindowStageCreate(windowStage: window.WindowStage) {
+    // Main window is created, set main page for this ability
+    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate');
+    nativeAppLifecycle.onShow();
+    windowStage.loadContent('pages/Index', (err, data) => {
+      if (err.code) {
+        hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? '');
+        return;
+      }
+      hilog.info(0x0000, 'testTag', 'Succeeded in loading the content. Data: %{public}s', JSON.stringify(data) ?? '');
+    });
+  }
+
+  onWindowStageDestroy() {
+    // Main window is destroyed, release UI related resources
+    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageDestroy');
+    nativeAppLifecycle.onHide();
+  }
+
+  onForeground() {
+    // Ability has brought to foreground
+    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onForeground');
+  }
+
+  onBackground() {
+    // Ability has back to background
+    hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onBackground');
+  }
+};
diff --git a/ohos/vap/entry/src/main/ets/pages/GeneralAnimation.ets b/ohos/vap/entry/src/main/ets/pages/GeneralAnimation.ets
new file mode 100644
index 00000000..de083cdc
--- /dev/null
+++ b/ohos/vap/entry/src/main/ets/pages/GeneralAnimation.ets
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { DownloadData, VAPPlayer } from '@ohos/vap';
+import { systemDateTime } from '@kit.BasicServicesKit';
+import { LogUtil } from '../common/LogUtil';
+import { util } from '@kit.ArkTS';
+import { VAPComponent, FitType, MixData, VideoMode } from '@ohos/vap';
+
+@Entry
+@Component
+struct GeneralAnimation {
+  private vapPlayer: VAPPlayer | undefined = undefined;
+  @State buttonEnabled: boolean = true;
+  @State fitType: FitType = FitType.FIT_CENTER;
+  private playTimes: number = 0;
+  private stopTimes: number = 0;
+  private pauseTimes: number = 0;
+  private xComponentId: string = 'xcomponentId_' + util.generateRandomUUID();
+
+  aboutToDisappear(): void {
+    LogUtil.info('aboutToDisappear')
+    this.vapPlayer?.stop()
+  }
+
+  onPageShow(): void {
+    LogUtil.info('onPageShow')
+  }
+
+  onPageHide(): void {
+    LogUtil.info('onPageHide')
+    this.vapPlayer?.stop()
+  }
+
+  play() {
+    if (this.vapPlayer === undefined) {
+      LogUtil.error('plz create XComponent first')
+      return
+    }
+    this.vapPlayer?.setFitType(this.fitType)
+    this.vapPlayer?.setVideoMode(VideoMode.VIDEO_MODE_SPLIT_HORIZONTAL)
+    try {
+      let opts: Array<MixData> = new Array();
+      this.buttonEnabled = false;
+
+      this.vapPlayer?.setDownloadAttribute(50000, (data: DownloadData) => {
+        console.log(`download progress: ${JSON.stringify(data)}`);
+      });
+
+      let startTime = systemDateTime.getTime(true)
+
+      this.vapPlayer?.setLoop(3); // 动画循环播放3次
+      this.vapPlayer?.play(getContext(this).filesDir + "/great_gift.mp4", opts, () => {
+        LogUtil.info("js get callback")
+        this.buttonEnabled = true;
+      });
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.playTimes + " play cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.playTimes + " play error " + JSON.stringify(e));
+    }
+    this.playTimes++;
+  }
+
+  pause() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.vapPlayer?.pause();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.pauseTimes + " pause cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.pauseTimes + " pause error " + JSON.stringify(e));
+    }
+    this.pauseTimes++;
+  }
+
+  stop() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.vapPlayer?.stop();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.stopTimes + " stop cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.stopTimes + " stop error " + JSON.stringify(e));
+    }
+    this.stopTimes++;
+  }
+
+  build() {
+    Column() {
+      Stack() {
+        XComponent({
+          id: this.xComponentId,
+          type: 'surface',
+          libraryname: 'vap'
+        })
+          .onLoad((context?: object) => {
+            if (context) {
+              this.vapPlayer = new VAPPlayer(this.xComponentId);
+              this.vapPlayer.setContext(context);
+            }
+          })
+          .backgroundColor(Color.Transparent)
+          .width('100%')
+          .height('100%')
+          .visibility(this.buttonEnabled ? Visibility.Hidden : Visibility.Visible)
+      }.backgroundImage($r('app.media.bg'))
+      .backgroundImageSize(ImageSize.FILL)
+      .height('90%')
+      .width('100%')
+
+      Scroll() {
+        Row() {
+          Select([{ value: 'fix_xy' }, { value: 'fix_center' }, { value: 'center_crop' }])
+            .selected(1)
+            .value('fix_center')
+            .onSelect((index: number) => {
+              console.info('Select: ' + index)
+              this.fitType = index
+            })
+          Button('Play')
+            .fontWeight(500)
+            .onClick(() => {
+              this.play()
+            })
+            .width('200')
+            .enabled(this.buttonEnabled)
+          Button('pause')
+            .onClick(() => {
+              this.pause()
+            })
+          Button('stop')
+            .onClick(() => {
+              this.stop()
+            })
+        }
+      }
+      .width('100%')
+      .scrollable(ScrollDirection.Horizontal)
+      .padding({ bottom: 10 })
+      .margin({ left: 5, right: 5 })
+      .border({
+        color: Color.Grey,
+        style: BorderStyle.Solid,
+        radius: 5,
+        width: 2
+      })
+      .backgroundColor(Color.White)
+    }
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/ets/pages/Index.ets b/ohos/vap/entry/src/main/ets/pages/Index.ets
new file mode 100644
index 00000000..8192de94
--- /dev/null
+++ b/ohos/vap/entry/src/main/ets/pages/Index.ets
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import router from '@ohos.router';
+
+@Entry
+@Component
+struct Index{
+  build() {
+    Scroll() {
+      Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
+        Flex({ direction: FlexDirection.Row, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
+          Button("测试普通动画")
+            .onClick(() => {
+              router.pushUrl({ url: "pages/GeneralAnimation" });
+            }).margin({ top: 15 })
+        }.width('100%').height(60)
+
+        Flex({ direction: FlexDirection.Row, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
+          Button("测试融合动画")
+            .onClick(() => {
+              router.pushUrl({ url: "pages/VAPXAnimation" });
+            }).margin({ top: 15 })
+        }.width('100%').height(60)
+
+        Flex({ direction: FlexDirection.Row, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
+          Button("测试新监听")
+            .onClick(() => {
+              router.pushUrl({ url: "pages/NewOn" });
+            }).margin({ top: 15 })
+        }.width('100%').height(60)
+      }.backgroundColor(Color.Pink)
+      .margin(10)
+      .padding(20)
+      .borderRadius(10)
+    }
+    .width('100%')
+    .height('100%')
+  }
+}
diff --git a/ohos/vap/entry/src/main/ets/pages/NewOn.ets b/ohos/vap/entry/src/main/ets/pages/NewOn.ets
new file mode 100644
index 00000000..4520a3a8
--- /dev/null
+++ b/ohos/vap/entry/src/main/ets/pages/NewOn.ets
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { VAPPlayer, VapState } from '@ohos/vap';
+import { systemDateTime } from '@kit.BasicServicesKit';
+import { LogUtil } from '../common/LogUtil';
+import { util } from '@kit.ArkTS';
+import { FitType, MixData, VideoMode } from '@ohos/vap';
+import { router } from '@kit.ArkUI';
+
+// 场景： 应用开屏效果， 可点击跳过
+@Entry
+@Component
+struct GeneralAnimation {
+  private vapPlayer: VAPPlayer | undefined = undefined;
+  @State showVideo: boolean = true;
+  @State fitType: FitType = FitType.CENTER_CROP;
+  private videoName: string = "demo.mp4";
+  private xComponentId: string = 'xComponentId_xx';
+
+  aboutToDisappear(): void {
+    LogUtil.info('aboutToDisappear')
+  }
+
+  onPageShow(): void {
+    LogUtil.info('onPageShow')
+  }
+
+  onPageHide(): void {
+    LogUtil.info('onPageHide')
+    this.vapPlayer?.stop()
+  }
+
+  on() {
+    this.vapPlayer?.on('stateChange', (state, ret) => {
+      LogUtil.info(`vapPlayer on state: ${state}`)
+      if (state === VapState.COMPLETE) {
+        LogUtil.info(`vapPlayer play complete: ${state}`)
+      }
+      if (state === VapState.FAILED && ret) {
+        LogUtil.error(`vapPlayer error: ${JSON.stringify(ret)}`)
+      }
+      if (state === VapState.DESTROY) {
+        this.vapPlayer = undefined
+        this.showVideo = false;
+        LogUtil.info(`vapPlayer DESTROY: ${state}`)
+      }
+    })
+  }
+
+  play() {
+    if (this.vapPlayer === undefined) {
+      LogUtil.error('plz create XComponent first')
+      return
+    }
+
+    this.on();
+
+    this.vapPlayer?.setFitType(this.fitType)
+    this.vapPlayer?.setVideoMode(VideoMode.VIDEO_MODE_SPLIT_HORIZONTAL)
+    try {
+      let opts: Array<MixData> = [];
+
+      let startTime = systemDateTime.getTime(true)
+
+      this.vapPlayer?.play(getContext(this).filesDir + "/" + this.videoName, opts, () => {
+        LogUtil.info("js get callback")
+        this.showVideo = false
+      });
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(" play cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(" play error " + JSON.stringify(e));
+    }
+  }
+
+  pause() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.vapPlayer?.pause();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(" pause cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(" pause error " + JSON.stringify(e));
+    }
+  }
+
+  stop() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.vapPlayer?.stop();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info("stop cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error("stop error " + JSON.stringify(e));
+    }
+  }
+
+  build() {
+    Column() {
+      Stack() {
+        if (!this.showVideo) {
+          Column() {
+            Button("返回")
+              .onClick(() => {
+                router.back()
+              })
+            Text("进入主页")
+            Text("占位文本")
+              .width('100%')
+              .textAlign(TextAlign.Center)
+              .border({ width: 1 })
+              .padding(10)
+              .fontColor(Color.Blue)
+              .textOverflow({ overflow: TextOverflow.Ellipsis })
+          }
+          .width('100%')
+          .height('100%')
+        } else {
+          XComponent({
+            id: this.xComponentId,
+            type: 'surface',
+            libraryname: 'vap'
+          })
+            .onLoad((context?: object) => {
+              if (context) {
+                this.vapPlayer = new VAPPlayer(this.xComponentId);
+                this.vapPlayer.setContext(context);
+              }
+              this.play()
+            })
+            .backgroundColor(Color.Transparent)
+            .width('100%')
+            .height('100%')
+
+          Button('Skip')
+            .fontWeight(500)
+            .onClick(() => {
+              this.stop()
+              this.showVideo = false
+              this.vapPlayer = undefined //必须，建议使用之前的visibility控制显示 容器都没了，还能调用方法！！！
+            })
+            .borderRadius(4)
+            .height(40)
+            .width(200)
+        }
+      }.backgroundImage($r('app.media.bg'))
+      .backgroundImageSize(ImageSize.FILL)
+      .height('100%')
+      .width('100%')
+    }
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/ets/pages/VAPXAnimation.ets b/ohos/vap/entry/src/main/ets/pages/VAPXAnimation.ets
new file mode 100644
index 00000000..34b4d025
--- /dev/null
+++ b/ohos/vap/entry/src/main/ets/pages/VAPXAnimation.ets
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { MixData, VAPPlayer, VAPColor } from '@ohos/vap';
+import { systemDateTime } from '@kit.BasicServicesKit';
+import { LogUtil } from '../common/LogUtil';
+import { util } from '@kit.ArkTS';
+import { FitType } from '@ohos/vap';
+import { VAPFontWeight } from '@ohos/vap';
+import { VAPTextAlign } from '@ohos/vap';
+import { SrcInfo, SrcType } from '@ohos/vap';
+import text from '@ohos.graphics.text';
+
+class ColorBean implements VAPColor {
+  a: number = 255;
+  r: number = 2;
+  g: number = 255;
+  b: number = 187
+}
+
+@Entry
+@Component
+struct VAPXAnimation {
+  private vapPlayer: VAPPlayer | undefined = undefined;
+  @State buttonEnabled: boolean = true;
+  @State fitType: FitType = FitType.FIT_CENTER;
+  @State textAlign: VAPTextAlign = VAPTextAlign.TEXT_ALIGN_LEFT;
+  @State fontWeight: VAPFontWeight = VAPFontWeight.NORMAL;
+  @State color: ColorBean = new ColorBean;
+  @State showColor: number = 0;
+  private srcInfo: SrcInfo[] | undefined = undefined
+  private playTimes: number = 0;
+  private stopTimes: number = 0;
+  private pauseTimes: number = 0;
+  private colorIdx: number = 0;
+  private xComponentId: string = 'xcomponentId_' + util.generateRandomUUID()
+  private videoPath: string = getContext(this).filesDir + "/123.mp4";
+
+  @Styles tipTxt() {
+    .backgroundColor('#fff')
+    .foregroundColor('#000')
+  }
+  aboutToDisappear(): void {
+    LogUtil.info('aboutToDisappear')
+    this.vapPlayer?.stop()
+  }
+
+  onPageShow(): void {
+    LogUtil.info('onPageShow')
+    this.showColor = (((this.color.r & 0xff) << 16) | ((this.color.g & 0xff) << 8) | ((this.color.b & 0xff)))
+  }
+
+  onPageHide(): void {
+    LogUtil.info('onPageHide')
+    this.vapPlayer?.stop()
+  }
+
+  play() {
+    if (this.vapPlayer === undefined) {
+      LogUtil.error('plz create XComponent first')
+      return
+    }
+    this.vapPlayer?.setFitType(this.fitType)
+    try {
+      if (this.srcInfo) {
+        let mixData: Array<MixData> = []
+        this.srcInfo.map((ele, idx) => {
+          if (ele.type == SrcType.IMG) {
+            mixData.push({ tag: ele.tag, imgUri: '图片地址' })
+          } else if (ele.type == SrcType.TXT) {
+            mixData.push({ tag: ele.tag, txt: '文本信息', color: this.color })
+          }
+        })
+        console.log('config mixData: ' + JSON.stringify(mixData))
+      } else {
+        console.log('error not get srcInfo')
+      }
+
+      let opts: Array<MixData> = [];
+      if (this.srcInfo != undefined) {
+        for (let s of this.srcInfo) {
+          if (s.type == SrcType.IMG) {
+            opts.push({
+              tag: s.tag,
+              imgUri: getContext(this).filesDir + '/head1.png'
+            })
+          } else if (s.type == SrcType.TXT) {
+            opts.push({
+              tag: s.tag,
+              txt: "星河Harmony NEXT 星河Harmony NEXT",
+              textAlign: this.textAlign, // VAPTextAlign.TEXT_ALIGN_JUSTIFY对齐方式规格见 https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-basic-components-text-V5#textalign
+              fontWeight: this.fontWeight,
+              color: this.color
+            })
+          }
+        }
+      }
+      this.buttonEnabled = false;
+
+      let startTime = systemDateTime.getTime(true)
+
+      this.vapPlayer?.play(this.videoPath, opts, () => {
+        LogUtil.info("js get callback")
+        this.buttonEnabled = true;
+      });
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.playTimes + " play cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.playTimes + " play error " + JSON.stringify(e));
+    }
+    this.playTimes++;
+  }
+
+  pause() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.vapPlayer?.pause();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.pauseTimes + " pause cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.pauseTimes + " pause error " + JSON.stringify(e));
+    }
+    this.pauseTimes++;
+  }
+
+  stop() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.vapPlayer?.stop();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.stopTimes + " stop cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.stopTimes + " stop error " + JSON.stringify(e));
+    }
+    this.stopTimes++;
+  }
+
+  build() {
+    Column() {
+      Stack() {
+        XComponent({
+          id: this.xComponentId,
+          type: 'surface',
+          libraryname: 'vap'
+        })
+          .onLoad((context?: object) => {
+            if (context) {
+              this.vapPlayer = new VAPPlayer(this.xComponentId);
+              this.vapPlayer.setContext(context);
+              let info = this.vapPlayer.getVideoInfo(this.videoPath)
+              console.log('getVideoInfo info ' + JSON.stringify(info))
+              this.srcInfo = info?.srcInfos
+            }
+          })
+          .backgroundColor(Color.Transparent)
+          .width('100%')
+          .height('100%')
+          .visibility(this.buttonEnabled ? Visibility.Hidden : Visibility.Visible)
+
+        Scroll() {
+          Row({ space: 10 }) {
+            Text('色彩分量:').fontWeight(FontWeight.Bold)
+            Select([{ value: 'red' }, { value: 'green' }, { value: 'blue' }])
+              .selected(0)
+              .value('red')
+              .onSelect((index: number) => {
+                this.colorIdx = index
+              })
+            TextInput()
+              .type(InputType.Number)
+              .width(80)
+              .maxLength(3)
+              .onChange((value: string) => {
+                if (this.colorIdx == 0) {
+                  this.color.r = Number(value) & 0xff
+                } else if (this.colorIdx == 1) {
+                  this.color.g = Number(value) & 0xff
+                } else if (this.colorIdx == 2) {
+                  this.color.b = Number(value) & 0xff
+                }
+                this.showColor =
+                  (((this.color.r & 0xff) << 16) | ((this.color.g & 0xff) << 8) | ((this.color.b & 0xff)))
+              })
+            Text('当前色彩:').tipTxt().fontWeight(FontWeight.Bold)
+            Text().width(20).height(20).backgroundColor(this.showColor)
+
+            Text('视频对齐:').fontWeight(FontWeight.Bold)
+            Select([{ value: 'fix_xy' }, { value: 'fix_center' }, { value: 'center_crop' }])
+              .selected(1)
+              .value('fix_center')
+              .onSelect((index: number) => {
+                this.fitType = index
+              })
+            Text('字体权重:').fontWeight(FontWeight.Bold)
+            Select([{ value: 'thin' }, { value: 'extra_light' }, { value: 'light' }, { value: 'normal' },
+              { value: 'medium' }, { value: 'semi_bold' },
+              { value: 'bold' }, { value: 'extra_bold' }, { value: 'black' }])
+              .selected(3)
+              .value('normal')
+              .onSelect((index: number) => {
+                this.fontWeight = index
+              })
+            Text('字体对齐:').fontWeight(FontWeight.Bold)
+            Select([{ value: 'left' }, { value: 'right' }, { value: 'center' }, { value: 'justify' },
+              { value: 'start' }, { value: 'end' }])
+              .selected(0)
+              .value('left')
+              .onSelect((index: number) => {
+                this.textAlign = index
+              })
+          }
+        }
+        .width('100%')
+        .scrollable(ScrollDirection.Horizontal)
+        .padding({ bottom: 10 })
+        .margin({ left: 5, right: 5 })
+        .border({
+          color: Color.Grey,
+          style: BorderStyle.Solid,
+          radius: 5,
+          width: 2
+        })
+        .backgroundColor(Color.White)
+        .opacity(0.6)
+      }
+      .backgroundImage($r('app.media.bg'))
+      .backgroundImageSize(ImageSize.FILL)
+      .height('93%')
+      .width('100%')
+      .alignContent(Alignment.Bottom)
+
+      Row() {
+        Button('Play')
+          .fontWeight(500)
+          .onClick(() => {
+            this.play()
+          })
+          .width('200')
+          .enabled(this.buttonEnabled)
+        Button('pause')
+          .onClick(() => {
+            this.pause()
+          })
+        Button('stop')
+          .onClick(() => {
+            this.stop()
+          })
+      }
+      .margin({ top: 15 })
+      .width('100%')
+      .justifyContent(FlexAlign.SpaceAround)
+      .alignItems(VerticalAlign.Bottom)
+    }
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/module.json5 b/ohos/vap/entry/src/main/module.json5
new file mode 100644
index 00000000..1e2746b4
--- /dev/null
+++ b/ohos/vap/entry/src/main/module.json5
@@ -0,0 +1,62 @@
+{
+  "module": {
+    "name": "entry",
+    "type": "entry",
+    "description": "$string:module_desc",
+    "mainElement": "EntryAbility",
+    "deviceTypes": [
+      "default",
+      "tablet"
+    ],
+    "deliveryWithInstall": true,
+    "installationFree": false,
+    "pages": "$profile:main_pages",
+    "abilities": [
+      {
+        "name": "EntryAbility",
+        "srcEntry": "./ets/entryability/EntryAbility.ts",
+        "description": "$string:EntryAbility_desc",
+        "icon": "$media:icon",
+        "label": "$string:EntryAbility_label",
+        "startWindowIcon": "$media:startIcon",
+        "startWindowBackground": "$color:start_window_background",
+        "exported": true,
+        "skills": [
+          {
+            "entities": [
+              "entity.system.home"
+            ],
+            "actions": [
+              "action.system.home"
+            ]
+          }
+        ]
+      }
+    ],
+    "requestPermissions": [
+      {
+        "name": 'ohos.permission.READ_MEDIA',
+        "reason": '$string:read_file',
+        "usedScene": {
+          "abilities": [
+            "EntryAbility"
+          ],
+          "when": "always"
+        }
+      },
+      {
+        "name": 'ohos.permission.WRITE_MEDIA',
+        "reason": '$string:read_file',
+        "usedScene": {
+          "abilities": [
+            "EntryAbility"
+          ],
+          "when": "always"
+        }
+      },
+      {
+        "name": "ohos.permission.INTERNET"
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/resources/base/element/color.json b/ohos/vap/entry/src/main/resources/base/element/color.json
new file mode 100644
index 00000000..ee559ba3
--- /dev/null
+++ b/ohos/vap/entry/src/main/resources/base/element/color.json
@@ -0,0 +1,12 @@
+{
+  "color": [
+    {
+      "name": "start_window_background",
+      "value": "#FFFFFF"
+    },
+    {
+      "name": "first",
+      "value": "#92D6CC"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/resources/base/element/float.json b/ohos/vap/entry/src/main/resources/base/element/float.json
new file mode 100644
index 00000000..80919a95
--- /dev/null
+++ b/ohos/vap/entry/src/main/resources/base/element/float.json
@@ -0,0 +1,48 @@
+{
+  "float": [
+    {
+      "name": "title_text_font_size",
+      "value": "24fp"
+    },
+    {
+      "name": "title_text_margin_left",
+      "value": "24vp"
+    },
+    {
+      "name": "title_text_margin_top",
+      "value": "12vp"
+    },
+    {
+      "name": "title_margin_top",
+      "value": "24vp"
+    },
+    {
+      "name": "title_height",
+      "value": "56vp"
+    },
+    {
+      "name": "xcomponent_margin_top",
+      "value": "27vp"
+    },
+    {
+      "name": "xcomponent_margin_left",
+      "value": "12vp"
+    },
+    {
+      "name": "xcomponent_margin_right",
+      "value": "12vp"
+    },
+    {
+      "name": "button_font_size",
+      "value": "16fp"
+    },
+    {
+      "name": "button_margin_bottom",
+      "value": "24vp"
+    },
+    {
+      "name": "button_height",
+      "value": "40vp"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/resources/base/element/string.json b/ohos/vap/entry/src/main/resources/base/element/string.json
new file mode 100644
index 00000000..9e41f7c4
--- /dev/null
+++ b/ohos/vap/entry/src/main/resources/base/element/string.json
@@ -0,0 +1,28 @@
+{
+  "string": [
+    {
+      "name": "module_desc",
+      "value": "module description"
+    },
+    {
+      "name": "EntryAbility_desc",
+      "value": "description"
+    },
+    {
+      "name": "EntryAbility_label",
+      "value": "XComponent"
+    },
+    {
+      "name": "title",
+      "value": "Render Example"
+    },
+    {
+      "name": "button_text",
+      "value": "LoadYUV"
+    },
+    {
+      "name": "read_file",
+      "value": "文件读取"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/resources/base/media/bg.png b/ohos/vap/entry/src/main/resources/base/media/bg.png
new file mode 100644
index 00000000..9172073c
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/base/media/bg.png differ
diff --git a/ohos/vap/entry/src/main/resources/base/media/coollb.png b/ohos/vap/entry/src/main/resources/base/media/coollb.png
new file mode 100644
index 00000000..bc9db6fd
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/base/media/coollb.png differ
diff --git a/ohos/vap/entry/src/main/resources/base/media/icon.png b/ohos/vap/entry/src/main/resources/base/media/icon.png
new file mode 100644
index 00000000..ce307a88
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/base/media/icon.png differ
diff --git a/ohos/vap/entry/src/main/resources/base/media/startIcon.png b/ohos/vap/entry/src/main/resources/base/media/startIcon.png
new file mode 100644
index 00000000..95b3d6ba
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/base/media/startIcon.png differ
diff --git a/ohos/vap/entry/src/main/resources/base/profile/main_pages.json b/ohos/vap/entry/src/main/resources/base/profile/main_pages.json
new file mode 100644
index 00000000..f7d3db49
--- /dev/null
+++ b/ohos/vap/entry/src/main/resources/base/profile/main_pages.json
@@ -0,0 +1,8 @@
+{
+  "src": [
+    "pages/Index",
+    "pages/GeneralAnimation",
+    "pages/VAPXAnimation",
+    "pages/NewOn"
+  ]
+}
diff --git a/ohos/vap/entry/src/main/resources/en_US/element/string.json b/ohos/vap/entry/src/main/resources/en_US/element/string.json
new file mode 100644
index 00000000..f9459551
--- /dev/null
+++ b/ohos/vap/entry/src/main/resources/en_US/element/string.json
@@ -0,0 +1,16 @@
+{
+  "string": [
+    {
+      "name": "module_desc",
+      "value": "module description"
+    },
+    {
+      "name": "EntryAbility_desc",
+      "value": "description"
+    },
+    {
+      "name": "EntryAbility_label",
+      "value": "label"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/main/resources/rawfile/123.mp4 b/ohos/vap/entry/src/main/resources/rawfile/123.mp4
new file mode 100644
index 00000000..5d9affc3
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/rawfile/123.mp4 differ
diff --git a/ohos/vap/entry/src/main/resources/rawfile/demo.mp4 b/ohos/vap/entry/src/main/resources/rawfile/demo.mp4
new file mode 100644
index 00000000..3c12bf31
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/rawfile/demo.mp4 differ
diff --git a/ohos/vap/entry/src/main/resources/rawfile/great_gift.mp4 b/ohos/vap/entry/src/main/resources/rawfile/great_gift.mp4
new file mode 100644
index 00000000..bbbcf0e9
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/rawfile/great_gift.mp4 differ
diff --git a/ohos/vap/entry/src/main/resources/rawfile/head1.png b/ohos/vap/entry/src/main/resources/rawfile/head1.png
new file mode 100644
index 00000000..1b24cebf
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/rawfile/head1.png differ
diff --git a/ohos/vap/entry/src/main/resources/rawfile/vapx.mp4 b/ohos/vap/entry/src/main/resources/rawfile/vapx.mp4
new file mode 100644
index 00000000..76f39230
Binary files /dev/null and b/ohos/vap/entry/src/main/resources/rawfile/vapx.mp4 differ
diff --git a/ohos/vap/entry/src/main/resources/zh_CN/element/string.json b/ohos/vap/entry/src/main/resources/zh_CN/element/string.json
new file mode 100644
index 00000000..12e8fdb2
--- /dev/null
+++ b/ohos/vap/entry/src/main/resources/zh_CN/element/string.json
@@ -0,0 +1,16 @@
+{
+  "string": [
+    {
+      "name": "module_desc",
+      "value": "模块描述"
+    },
+    {
+      "name": "EntryAbility_desc",
+      "value": "description"
+    },
+    {
+      "name": "EntryAbility_label",
+      "value": "vap"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/ohosTest/ets/test/Ability.test.ets b/ohos/vap/entry/src/ohosTest/ets/test/Ability.test.ets
new file mode 100644
index 00000000..91689f8e
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/ets/test/Ability.test.ets
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import hilog from '@ohos.hilog';
+import { describe, beforeAll, beforeEach, afterEach, afterAll, it, expect } from '@ohos/hypium';
+
+export default function abilityTest() {
+  describe('ActsAbilityTest', () => {
+    // Defines a test suite. Two parameters are supported: test suite name and test suite function.
+    beforeAll(() => {
+      // Presets an action, which is performed only once before all test cases of the test suite start.
+      // This API supports only one parameter: preset action function.
+    })
+    beforeEach(() => {
+      // Presets an action, which is performed before each unit test case starts.
+      // The number of execution times is the same as the number of test cases defined by **it**.
+      // This API supports only one parameter: preset action function.
+    })
+    afterEach(() => {
+      // Presets a clear action, which is performed after each unit test case ends.
+      // The number of execution times is the same as the number of test cases defined by **it**.
+      // This API supports only one parameter: clear action function.
+    })
+    afterAll(() => {
+      // Presets a clear action, which is performed after all test cases of the test suite end.
+      // This API supports only one parameter: clear action function.
+    })
+    it('assertContain', 0, () => {
+      // Defines a test case. This API supports three parameters: test case name, filter parameter, and test case function.
+      hilog.info(0x0000, 'testTag', '%{public}s', 'it begin');
+      let a = 'abc';
+      let b = 'b';
+      // Defines a variety of assertion methods, which are used to declare expected boolean conditions.
+      expect(a).assertContain(b);
+      expect(a).assertEqual(a);
+    })
+  })
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/ohosTest/ets/test/List.test.ets b/ohos/vap/entry/src/ohosTest/ets/test/List.test.ets
new file mode 100644
index 00000000..4ef6a155
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/ets/test/List.test.ets
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import abilityTest from './Ability.test';
+
+export default function testsuite() {
+  abilityTest();
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/ohosTest/ets/testability/TestAbility.ets b/ohos/vap/entry/src/ohosTest/ets/testability/TestAbility.ets
new file mode 100644
index 00000000..3df3b195
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/ets/testability/TestAbility.ets
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import UIAbility from '@ohos.app.ability.UIAbility';
+import AbilityDelegatorRegistry from '@ohos.app.ability.abilityDelegatorRegistry';
+import hilog from '@ohos.hilog';
+import { Hypium } from '@ohos/hypium';
+import testsuite from '../test/List.test';
+import window from '@ohos.window';
+import Want from '@ohos.app.ability.Want';
+import AbilityConstant from '@ohos.app.ability.AbilityConstant';
+
+export default class TestAbility extends UIAbility {
+  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onCreate');
+    hilog.info(0x0000, 'testTag', '%{public}s', 'want param:' + JSON.stringify(want) ?? '');
+    hilog.info(0x0000, 'testTag', '%{public}s', 'launchParam:' + JSON.stringify(launchParam) ?? '');
+    let abilityDelegator: AbilityDelegatorRegistry.AbilityDelegator;
+    abilityDelegator = AbilityDelegatorRegistry.getAbilityDelegator();
+    let abilityDelegatorArguments: AbilityDelegatorRegistry.AbilityDelegatorArgs;
+    abilityDelegatorArguments = AbilityDelegatorRegistry.getArguments();
+    hilog.info(0x0000, 'testTag', '%{public}s', 'start run testcase!!!');
+    Hypium.hypiumTest(abilityDelegator, abilityDelegatorArguments, testsuite);
+  }
+
+  onDestroy() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onDestroy');
+  }
+
+  onWindowStageCreate(windowStage: window.WindowStage) {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onWindowStageCreate');
+    windowStage.loadContent('testability/pages/Index', (err, data) => {
+      if (err.code) {
+        hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? '');
+        return;
+      }
+      hilog.info(0x0000, 'testTag', 'Succeeded in loading the content. Data: %{public}s',
+        JSON.stringify(data) ?? '');
+    });
+  }
+
+  onWindowStageDestroy() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onWindowStageDestroy');
+  }
+
+  onForeground() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onForeground');
+  }
+
+  onBackground() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onBackground');
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/ohosTest/ets/testability/pages/Index.ets b/ohos/vap/entry/src/ohosTest/ets/testability/pages/Index.ets
new file mode 100644
index 00000000..cb16c9a2
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/ets/testability/pages/Index.ets
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+@Entry
+@Component
+struct Index {
+  @State message: string = 'Hello World';
+
+  build() {
+    Row() {
+      Column() {
+        Text(this.message)
+          .fontSize(50)
+          .fontWeight(FontWeight.Bold)
+      }
+      .width('100%')
+    }
+    .height('100%')
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/ohosTest/ets/testrunner/OpenHarmonyTestRunner.ets b/ohos/vap/entry/src/ohosTest/ets/testrunner/OpenHarmonyTestRunner.ets
new file mode 100644
index 00000000..7ffc8507
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/ets/testrunner/OpenHarmonyTestRunner.ets
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import hilog from '@ohos.hilog';
+import TestRunner from '@ohos.application.testRunner';
+import AbilityDelegatorRegistry from '@ohos.app.ability.abilityDelegatorRegistry';
+import Want from '@ohos.app.ability.Want';
+
+let abilityDelegator: AbilityDelegatorRegistry.AbilityDelegator | undefined = undefined
+let abilityDelegatorArguments: AbilityDelegatorRegistry.AbilityDelegatorArgs | undefined = undefined
+
+async function onAbilityCreateCallback() {
+  hilog.info(0x0000, 'testTag', '%{public}s', 'onAbilityCreateCallback');
+}
+
+async function addAbilityMonitorCallback(err : Error) {
+  hilog.info(0x0000, 'testTag', 'addAbilityMonitorCallback : %{public}s', JSON.stringify(err) ?? '');
+}
+
+export default class OpenHarmonyTestRunner implements TestRunner {
+  constructor() {
+  }
+
+  onPrepare() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'OpenHarmonyTestRunner OnPrepare ');
+  }
+
+  async onRun() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'OpenHarmonyTestRunner onRun run');
+    abilityDelegatorArguments = AbilityDelegatorRegistry.getArguments()
+    abilityDelegator = AbilityDelegatorRegistry.getAbilityDelegator()
+    const bundleName = abilityDelegatorArguments.bundleName;
+    const testAbilityName = 'TestAbility';
+    let lMonitor: AbilityDelegatorRegistry.AbilityMonitor = {
+      abilityName: testAbilityName,
+      onAbilityCreate: onAbilityCreateCallback,
+    };
+    abilityDelegator.addAbilityMonitor(lMonitor, addAbilityMonitorCallback)
+    const want: Want = {
+      bundleName: bundleName,
+      abilityName: testAbilityName
+    };
+    abilityDelegator = AbilityDelegatorRegistry.getAbilityDelegator();
+    abilityDelegator.startAbility(want, (err, data) => {
+      hilog.info(0x0000, 'testTag', 'startAbility : err : %{public}s', JSON.stringify(err) ?? '');
+      hilog.info(0x0000, 'testTag', 'startAbility : data : %{public}s',JSON.stringify(data) ?? '');
+    })
+    hilog.info(0x0000, 'testTag', '%{public}s', 'OpenHarmonyTestRunner onRun end');
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/ohosTest/module.json5 b/ohos/vap/entry/src/ohosTest/module.json5
new file mode 100644
index 00000000..4fc97017
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/module.json5
@@ -0,0 +1,37 @@
+{
+  "module": {
+    "name": "entry_test",
+    "type": "feature",
+    "description": "$string:module_test_desc",
+    "mainElement": "TestAbility",
+    "deviceTypes": [
+      "default",
+      "tablet"
+    ],
+    "deliveryWithInstall": true,
+    "installationFree": false,
+    "pages": "$profile:test_pages",
+    "abilities": [
+      {
+        "name": "TestAbility",
+        "srcEntry": "./ets/testability/TestAbility.ets",
+        "description": "$string:TestAbility_desc",
+        "icon": "$media:icon",
+        "label": "$string:TestAbility_label",
+        "exported": true,
+        "startWindowIcon": "$media:icon",
+        "startWindowBackground": "$color:start_window_background",
+        "skills": [
+          {
+            "actions": [
+              "action.system.home"
+            ],
+            "entities": [
+              "entity.system.home"
+            ]
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/ohos/vap/entry/src/ohosTest/resources/base/element/color.json b/ohos/vap/entry/src/ohosTest/resources/base/element/color.json
new file mode 100644
index 00000000..3c712962
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/resources/base/element/color.json
@@ -0,0 +1,8 @@
+{
+  "color": [
+    {
+      "name": "start_window_background",
+      "value": "#FFFFFF"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/ohosTest/resources/base/element/string.json b/ohos/vap/entry/src/ohosTest/resources/base/element/string.json
new file mode 100644
index 00000000..65d8fa5a
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/resources/base/element/string.json
@@ -0,0 +1,16 @@
+{
+  "string": [
+    {
+      "name": "module_test_desc",
+      "value": "test ability description"
+    },
+    {
+      "name": "TestAbility_desc",
+      "value": "the test ability"
+    },
+    {
+      "name": "TestAbility_label",
+      "value": "test label"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/ohosTest/resources/base/media/icon.png b/ohos/vap/entry/src/ohosTest/resources/base/media/icon.png
new file mode 100644
index 00000000..ce307a88
Binary files /dev/null and b/ohos/vap/entry/src/ohosTest/resources/base/media/icon.png differ
diff --git a/ohos/vap/entry/src/ohosTest/resources/base/profile/test_pages.json b/ohos/vap/entry/src/ohosTest/resources/base/profile/test_pages.json
new file mode 100644
index 00000000..b7e7343c
--- /dev/null
+++ b/ohos/vap/entry/src/ohosTest/resources/base/profile/test_pages.json
@@ -0,0 +1,5 @@
+{
+  "src": [
+    "testability/pages/Index"
+  ]
+}
diff --git a/ohos/vap/entry/src/test/List.test.ets b/ohos/vap/entry/src/test/List.test.ets
new file mode 100644
index 00000000..acfaf9f4
--- /dev/null
+++ b/ohos/vap/entry/src/test/List.test.ets
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import localUnitTest from './LocalUnit.test';
+
+export default function testsuite() {
+  localUnitTest();
+}
\ No newline at end of file
diff --git a/ohos/vap/entry/src/test/LocalUnit.test.ets b/ohos/vap/entry/src/test/LocalUnit.test.ets
new file mode 100644
index 00000000..91906500
--- /dev/null
+++ b/ohos/vap/entry/src/test/LocalUnit.test.ets
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { describe, beforeAll, beforeEach, afterEach, afterAll, it, expect } from '@ohos/hypium';
+
+export default function localUnitTest() {
+  describe('localUnitTest',() => {
+    // Defines a test suite. Two parameters are supported: test suite name and test suite function.
+    beforeAll(() => {
+      // Presets an action, which is performed only once before all test cases of the test suite start.
+      // This API supports only one parameter: preset action function.
+    });
+    beforeEach(() => {
+      // Presets an action, which is performed before each unit test case starts.
+      // The number of execution times is the same as the number of test cases defined by **it**.
+      // This API supports only one parameter: preset action function.
+    });
+    afterEach(() => {
+      // Presets a clear action, which is performed after each unit test case ends.
+      // The number of execution times is the same as the number of test cases defined by **it**.
+      // This API supports only one parameter: clear action function.
+    });
+    afterAll(() => {
+      // Presets a clear action, which is performed after all test cases of the test suite end.
+      // This API supports only one parameter: clear action function.
+    });
+    it('assertContain', 0, () => {
+      // Defines a test case. This API supports three parameters: test case name, filter parameter, and test case function.
+      let a = 'abc';
+      let b = 'b';
+      // Defines a variety of assertion methods, which are used to declare expected boolean conditions.
+      expect(a).assertContain(b);
+      expect(a).assertEqual(a);
+    });
+  });
+}
\ No newline at end of file
diff --git a/ohos/vap/hvigor/hvigor-config.json5 b/ohos/vap/hvigor/hvigor-config.json5
new file mode 100644
index 00000000..73bfab4e
--- /dev/null
+++ b/ohos/vap/hvigor/hvigor-config.json5
@@ -0,0 +1,17 @@
+{
+  "modelVersion": "5.0.0",
+  "dependencies": {
+  },
+  "execution": {
+    // "daemon": true,                          /* Enable daemon compilation. Default: true */
+    // "incremental": true,                     /* Enable incremental compilation. Default: true */
+    // "parallel": true,                        /* Enable parallel compilation. Default: true */
+    // "typeCheck": false,                      /* Enable typeCheck. Default: false */
+  },
+  "logging": {
+    // "level": "info"                          /* Define the log level. Value: [ "debug" | "info" | "warn" | "error" ]. Default: "info" */
+  },
+  "debugging": {
+    // "stacktrace": false                      /* Disable stacktrace compilation. Default: false */
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/hvigorfile.ts b/ohos/vap/hvigorfile.ts
new file mode 100644
index 00000000..f3cb9f1a
--- /dev/null
+++ b/ohos/vap/hvigorfile.ts
@@ -0,0 +1,6 @@
+import { appTasks } from '@ohos/hvigor-ohos-plugin';
+
+export default {
+    system: appTasks,  /* Built-in plugin of Hvigor. It cannot be modified. */
+    plugins:[]         /* Custom plugin to extend the functionality of Hvigor. */
+}
diff --git a/ohos/vap/imgs/1.gif b/ohos/vap/imgs/1.gif
new file mode 100644
index 00000000..f522d74d
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diff --git a/ohos/vap/imgs/2.gif b/ohos/vap/imgs/2.gif
new file mode 100644
index 00000000..a0009190
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diff --git a/ohos/vap/imgs/4.gif b/ohos/vap/imgs/4.gif
new file mode 100644
index 00000000..2f4c61ce
Binary files /dev/null and b/ohos/vap/imgs/4.gif differ
diff --git a/ohos/vap/imgs/5.gif b/ohos/vap/imgs/5.gif
new file mode 100644
index 00000000..ddbe60dd
Binary files /dev/null and b/ohos/vap/imgs/5.gif differ
diff --git a/ohos/vap/imgs/crop.png b/ohos/vap/imgs/crop.png
new file mode 100644
index 00000000..bd7abbbc
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diff --git a/ohos/vap/imgs/icon.png b/ohos/vap/imgs/icon.png
new file mode 100644
index 00000000..c8748024
Binary files /dev/null and b/ohos/vap/imgs/icon.png differ
diff --git a/ohos/vap/oh-package-lock.json5 b/ohos/vap/oh-package-lock.json5
new file mode 100644
index 00000000..f538ae29
--- /dev/null
+++ b/ohos/vap/oh-package-lock.json5
@@ -0,0 +1,19 @@
+{
+  "meta": {
+    "stableOrder": true
+  },
+  "lockfileVersion": 3,
+  "ATTENTION": "THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.",
+  "specifiers": {
+    "@ohos/hypium@1.0.19": "@ohos/hypium@1.0.19"
+  },
+  "packages": {
+    "@ohos/hypium@1.0.19": {
+      "name": "@ohos/hypium",
+      "version": "1.0.19",
+      "integrity": "sha512-cEjDgLFCm3cWZDeRXk7agBUkPqjWxUo6AQeiu0gEkb3J8ESqlduQLSIXeo3cCsm8U/asL7iKjF85ZyOuufAGSQ==",
+      "resolved": "https://ohpm.openharmony.cn/ohpm/@ohos/hypium/-/hypium-1.0.19.har",
+      "registryType": "ohpm"
+    }
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/oh-package.json5 b/ohos/vap/oh-package.json5
new file mode 100644
index 00000000..eb97424f
--- /dev/null
+++ b/ohos/vap/oh-package.json5
@@ -0,0 +1,9 @@
+{
+  "modelVersion": "5.0.0",
+  "description": "Please describe the basic information.",
+  "dependencies": {},
+  "devDependencies": {
+    "@ohos/hypium": "1.0.19"
+  },
+  "dynamicDependencies": {}
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/.gitignore b/ohos/vap/vap_module/.gitignore
new file mode 100644
index 00000000..e2713a27
--- /dev/null
+++ b/ohos/vap/vap_module/.gitignore
@@ -0,0 +1,6 @@
+/node_modules
+/oh_modules
+/.preview
+/build
+/.cxx
+/.test
\ No newline at end of file
diff --git a/ohos/vap/vap_module/BuildProfile.ets b/ohos/vap/vap_module/BuildProfile.ets
new file mode 100644
index 00000000..82dffd72
--- /dev/null
+++ b/ohos/vap/vap_module/BuildProfile.ets
@@ -0,0 +1,17 @@
+/**
+ * Use these variables when you tailor your ArkTS code. They must be of the const type.
+ */
+export const HAR_VERSION = '1.1.3';
+export const BUILD_MODE_NAME = 'debug';
+export const DEBUG = true;
+export const TARGET_NAME = 'default';
+
+/**
+ * BuildProfile Class is used only for compatibility purposes.
+ */
+export default class BuildProfile { 
+	static readonly HAR_VERSION = HAR_VERSION;
+	static readonly BUILD_MODE_NAME = BUILD_MODE_NAME;
+	static readonly DEBUG = DEBUG;
+	static readonly TARGET_NAME = TARGET_NAME;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/CHANGELOG.md b/ohos/vap/vap_module/CHANGELOG.md
new file mode 100644
index 00000000..10934597
--- /dev/null
+++ b/ohos/vap/vap_module/CHANGELOG.md
@@ -0,0 +1,34 @@
+# 版本记录
+
+## 1.1.3
+
+---
+
+1. Fix loop bug.
+
+## 1.1.2
+
+---
+
+1. Fix the memory leak.
+
+## 1.1.1
+
+---
+
+1. 增强vap视频融合的通用性以及填充模式
+2. 同步上游社区代码，修复在快速创建销毁xcomponent组件时出现的crash问题
+
+## 1.1.0
+
+---
+
+1. 兼容部分MP4文件
+2. 优化监听逻辑
+3. 修复特定场景下的闪退
+
+## 1.0.0 初版
+
+---
+
+1. 发布1.0.0初版
\ No newline at end of file
diff --git a/ohos/vap/vap_module/Index.ets b/ohos/vap/vap_module/Index.ets
new file mode 100644
index 00000000..286f8c16
--- /dev/null
+++ b/ohos/vap/vap_module/Index.ets
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export * from './src/main/ets/VAPPlayer'
+export * from './src/main/ets/Index'
+export * from './src/main/ets/DataDeclare'
diff --git a/ohos/vap/vap_module/LICENSE b/ohos/vap/vap_module/LICENSE
new file mode 100644
index 00000000..f433b1a5
--- /dev/null
+++ b/ohos/vap/vap_module/LICENSE
@@ -0,0 +1,177 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
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+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
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+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+      copyright license to reproduce, prepare Derivative Works of,
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+   3. Grant of Patent License. Subject to the terms and conditions of
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+      institute patent litigation against any entity (including a
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+      granted to You under this License for that Work shall terminate
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+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
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+      (d) If the Work includes a "NOTICE" text file as part of its
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+          of the following places: within a NOTICE text file distributed
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+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
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+      other commercial damages or losses), even if such Contributor
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+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
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+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
diff --git a/ohos/vap/vap_module/README.md b/ohos/vap/vap_module/README.md
new file mode 100644
index 00000000..63ab1c94
--- /dev/null
+++ b/ohos/vap/vap_module/README.md
@@ -0,0 +1,224 @@
+# OHOS-VAP
+
+---
+
+## 简介
+
+---
+
+腾讯vap的OpenHarmony版本，提供高性能，炫酷视频动画播放
+
+## 下载安装
+
+```bash
+ohpm install @ohos/vap
+```
+
+## 接口
+
+---
+| 接口           | 功能            |
+|--------------|---------------|
+| play         | 播放            |
+| pause        | 暂停            |
+| stop         | 停止            |
+| on           | 监听生命周期/手势     |
+| setFitType   | 设置视频对齐方式      |
+| setVideoMode | 设置视频格式（兼容老视频） |
+| getVideoInfo | 获取融合动画配置信息    |
+ 详细使用可参考  [demo工程](https://gitcode.com/openharmony-tpc/openharmony_tpc_samples/tree/master/vap)
+
+## 使用
+
+---
+
+### 头文件引入
+
+在应用文件中添加头文件
+
+```typescript
+import { VAPPlayer,MixData } from '@ohos/vap';
+```
+
+### 定义 VAPPlayer 组件
+
+```typescript
+private vapPlayer: VAPPlayer | undefined = undefined;
+@State buttonEnabled: boolean = true; // 该状态为控制按钮是否可以点击
+@State src: string = "/storage/Users/currentUser/Documents/1.mp4"; // 该路径可为网络路径
+```
+
+### 配置网络资源下载路径
+```typescript
+// 具体使用可参考示例代码
+// 获取沙箱路径
+let context : Context = getContext(this) as Context
+let dir = context.filesDir
+```
+### 界面
+
+```typescript
+XComponent({
+  id: 'xcomponentId', // 唯一标识
+  type: 'surface',
+  libraryname: 'vap'
+})
+  .onLoad((xComponentContext?: object | Record<string, () => void>) => {
+    if (xComponentContext) {
+      this.vapPlayer = new VAPPlayer
+      this.vapPlayer.setContext(xComponentContext)
+      this.vapPlayer.sandDir = dir // 设置存储路径
+    }
+  })
+  .backgroundColor(Color.Transparent)
+  .height('100%')
+  .visibility(this.buttonEnabled ? Visibility.Hidden: Visibility.Visible)
+  .width('80%')
+```
+### 设置视频对齐方式
+
+  通过`setFitType`这个接口设置视频对齐方式（支持FIT_XY,FIT_CENTER,CENTER_CROP）
+
+  **接口需要在`play`之前使用**
+
+```typescript
+this.vapPlayer?.setFitType(fitType)
+```
+
+### 使用
+
+#### 播放接口 Play 的使用
+融合动画信息顺序自定义，需要指定 `tag`, `tag` 为视频制作时指定，该信息可通过`this.vapPlayer.getVideoInfo(uri)`
+当融合信息为字体时，可配置字体的对齐，颜色，大小
+```typescript
+let opts: Array<MixData> = [{
+  tag: 'sImg1',
+  imgUri: getContext(this).filesDir + '/head1.png'
+}, {
+  tag: 'abc',
+  txt: "星河Harmony NEXT",
+  imgUri: getContext(this).filesDir + '/head1.png'
+}, {
+  tag: 'sTxt1',
+  txt: "星河Harmony NEXT",
+  textAlign: this.textAlign,
+  fontWeight: this.fontWeight,
+  color: this.color
+}];
+this.buttonEnabled = false;
+
+this.vapPlayer?.play(getContext(this).filesDir + "/vapx.mp4", opts, () => {
+  this.buttonEnabled = true;
+});
+```
+
+#### 暂停的使用
+
+```typescript
+this.vapPlayer?.pause()
+```
+
+#### 停止的使用
+
+```typescript
+this.vapPlayer?.stop()
+```
+
+#### 监听手势
+
+- 在动画播放过程中点击播放区域，如果点击到融合动画资源，回调会返回该资源（字符串）
+- **接口需要在`play`之前使用**
+```typescript
+this.vapPlayer?.on('click', (state)=>{
+  if(state) {
+    console.log('js get onClick: ' + state)
+  }
+})
+```
+
+#### 监听播放生命周期变化
+**接口需要在`play`之前使用**
+```typescript
+this.vapPlayer?.on('stateChange', (state, ret)=>{
+  if(state) {
+    console.log('js get on: ' + state)
+    if(ret)
+      console.log('js get on frame: ' + JSON.stringify(ret))
+  }
+})
+```
+
+- 回调参数 `state` 反应当前播放的状态
+```typescript
+enum VapState {
+  UNKNOWN,
+  READY,
+  START,
+  RENDER,
+  COMPLETE,
+  DESTROY,
+  FAILED
+}
+```
+- 参数 `ret` ，当 `state` 为 `RENDER` 或 `START` 返回 `AnimConfig` 对象
+- 参数 `ret` ，当 `state` 为 `FAILED` 反应当前的错误码
+- 参数 `ret` ，其余状态为 `undefined`
+
+#### 应用退出后台
+
+```typescript
+  onPageHide(): void {
+    console.log('[LIFECYCLE-Page] onPageHide');
+    this.vapPlayer?.stop()
+  }
+```
+可在页面的生命周期中调用`onPageHide`方法
+
+## 兼容老视频（alphaplayer 对称的视频）
+```typescript
+this.vapPlayer?.setVideoMode(VideoMode.VIDEO_MODE_SPLIT_HORIZONTAL)
+```
+对于老视频推荐调用这个接口，**接口需要在`play`之前使用**
+
+## 约束与限制
+
+---
+
+在下述版本通过
+- DevEco Studio 5.0(5.0.3.810), SDK: API12(5.0.0.60)
+
+## 权限设置
+
+---
+
+* **如果确定视频文件在沙箱中则不必配置**
+* 在应用模块的`module.json5`中添加权限， 例如：`entry\src\main\module.json5`
+* `READ_MEDIA` 读取用户目录下的文件（比如 文档）； `WRITE_MEDIA`（下载到用户目录下）；`INTERNET` 下载网络文件
+
+```json
+"requestPermissions": [
+{
+"name": 'ohos.permission.READ_MEDIA',
+"reason": '$string:read_file',
+"usedScene": {
+"abilities": [
+"EntryAbility"
+],
+"when": "always"
+}
+},
+{
+"name": 'ohos.permission.WRITE_MEDIA',
+"reason": '$string:read_file',
+"usedScene": {
+"abilities": [
+"EntryAbility"
+],
+"when": "always"
+}
+},
+{
+"name": "ohos.permission.INTERNET"
+}
+]
+```
diff --git a/ohos/vap/vap_module/build-profile.json5 b/ohos/vap/vap_module/build-profile.json5
new file mode 100644
index 00000000..4dfd923f
--- /dev/null
+++ b/ohos/vap/vap_module/build-profile.json5
@@ -0,0 +1,22 @@
+{
+  "apiType": "stageMode",
+  "buildOption": {
+    "externalNativeOptions": {
+      "path": "./src/main/cpp/CMakeLists.txt",
+      "arguments": "-DCMAKE_BUILD_TYPE='Release'",
+      "abiFilters": [
+        "arm64-v8a",
+        "x86_64",
+      ],
+      "cppFlags": ""
+    },
+  },
+  "targets": [
+    {
+      "name": "default"
+    },
+    {
+      "name": "ohosTest"
+    }
+  ]
+}
diff --git a/ohos/vap/vap_module/consumer-rules.txt b/ohos/vap/vap_module/consumer-rules.txt
new file mode 100644
index 00000000..e69de29b
diff --git a/ohos/vap/vap_module/hvigorfile.ts b/ohos/vap/vap_module/hvigorfile.ts
new file mode 100644
index 00000000..42187071
--- /dev/null
+++ b/ohos/vap/vap_module/hvigorfile.ts
@@ -0,0 +1,6 @@
+import { harTasks } from '@ohos/hvigor-ohos-plugin';
+
+export default {
+    system: harTasks,  /* Built-in plugin of Hvigor. It cannot be modified. */
+    plugins:[]         /* Custom plugin to extend the functionality of Hvigor. */
+}
diff --git a/ohos/vap/vap_module/obfuscation-rules.txt b/ohos/vap/vap_module/obfuscation-rules.txt
new file mode 100644
index 00000000..69c4d6a8
--- /dev/null
+++ b/ohos/vap/vap_module/obfuscation-rules.txt
@@ -0,0 +1,18 @@
+# Define project specific obfuscation rules here.
+# You can include the obfuscation configuration files in the current module's build-profile.json5.
+#
+# For more details, see
+#   https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/source-obfuscation-V5
+
+# Obfuscation options:
+# -disable-obfuscation: disable all obfuscations
+# -enable-property-obfuscation: obfuscate the property names
+# -enable-toplevel-obfuscation: obfuscate the names in the global scope
+# -compact: remove unnecessary blank spaces and all line feeds
+# -remove-log: remove all console.* statements
+# -print-namecache: print the name cache that contains the mapping from the old names to new names
+# -apply-namecache: reuse the given cache file
+
+# Keep options:
+# -keep-property-name: specifies property names that you want to keep
+# -keep-global-name: specifies names that you want to keep in the global scope
\ No newline at end of file
diff --git a/ohos/vap/vap_module/oh-package-lock.json5 b/ohos/vap/vap_module/oh-package-lock.json5
new file mode 100644
index 00000000..22f9d347
--- /dev/null
+++ b/ohos/vap/vap_module/oh-package-lock.json5
@@ -0,0 +1,9 @@
+{
+  "meta": {
+    "stableOrder": true
+  },
+  "lockfileVersion": 3,
+  "ATTENTION": "THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.",
+  "specifiers": {},
+  "packages": {}
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/oh-package.json5 b/ohos/vap/vap_module/oh-package.json5
new file mode 100644
index 00000000..63fc4179
--- /dev/null
+++ b/ohos/vap/vap_module/oh-package.json5
@@ -0,0 +1,10 @@
+{
+  "name": "@ohos/vap",
+  "version": "1.1.3",
+  "description": "A cool video animation playback solution.",
+  "main": "Index.ets",
+  "author": "ohos_tpc",
+  "license": "Apache-2.0",
+  "repository": "https://gitcode.com/openharmony-tpc/openharmony_tpc_samples/tree/master/vap",
+  "dependencies": {}
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/CMakeLists.txt
new file mode 100644
index 00000000..102596c0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/CMakeLists.txt
@@ -0,0 +1,70 @@
+# the minimum version of CMake.
+cmake_minimum_required(VERSION 3.4.1)
+project(XComponent)
+
+set(CMAKE_CXX_STANDARD 17)
+set(NATIVERENDER_ROOT_PATH ${CMAKE_CURRENT_SOURCE_DIR})
+add_definitions(-DOHOS_PLATFORM)
+
+include_directories(
+    ${NATIVERENDER_ROOT_PATH}
+    ${NATIVERENDER_ROOT_PATH}/include
+    ${NATIVERENDER_ROOT_PATH}/include/util
+    ${NATIVERENDER_ROOT_PATH}/include/render
+    ${NATIVERENDER_ROOT_PATH}/include/mask
+    ${NATIVERENDER_ROOT_PATH}/include/mix
+    ${NATIVERENDER_ROOT_PATH}/include/napi
+    ${NATIVERENDER_ROOT_PATH}/include/util/json/include
+)
+
+add_library(vap SHARED
+    manager/plugin_manager.cpp
+    mask/mask_config.cpp
+    mask/mask_render.cpp
+    mask/mask_shader.cpp
+    mix/frame.cpp
+    mix/mix_render.cpp
+    mix/mix_shader.cpp
+    mix/src.cpp
+    napi/n_val.cpp
+    napi/n_func_arg.cpp
+    render/egl_core.cpp
+    render/plugin_render.cpp
+    render/yuv_render.cpp
+    render/anim_config.cpp
+    util/shader_util.cpp
+    util/tex_coords_util.cpp
+    util/vertex_util.cpp
+    util/texture_load_util.cpp
+    napi_init.cpp
+    video_decoder.cpp
+    demuxer.cpp
+    player.cpp
+    audio_decoder.cpp
+    resource_request.cpp
+    vap_callback.cpp
+)
+target_compile_definitions(vap PUBLIC -DNAPI_VERSION=16)
+target_link_libraries(vap PUBLIC EGL)
+target_link_libraries(vap PUBLIC GLESv3)
+target_link_libraries(vap PUBLIC hilog_ndk.z)
+target_link_libraries(vap PUBLIC ace_ndk.z)
+target_link_libraries(vap PUBLIC ace_napi.z)
+target_link_libraries(vap PUBLIC libc++.a)
+target_link_libraries(vap PUBLIC z)
+target_link_libraries(vap PUBLIC uv)
+target_link_libraries(vap PUBLIC libace_napi.z.so)
+target_link_libraries(vap PUBLIC libnative_media_codecbase.so)
+target_link_libraries(vap PUBLIC libnative_media_core.so)
+target_link_libraries(vap PUBLIC libnative_media_vdec.so)
+target_link_libraries(vap PUBLIC libnative_media_adec.so)
+target_link_libraries(vap PUBLIC libnative_media_acodec.so)
+target_link_libraries(vap PUBLIC libnative_media_avsource.so)
+target_link_libraries(vap PUBLIC libnative_media_avdemuxer.so)
+target_link_libraries(vap PUBLIC libavplayer.so)
+target_link_libraries(vap PUBLIC libohaudio.so)
+target_link_libraries(vap PUBLIC libnative_drawing.so)
+target_link_libraries(vap PUBLIC libpixelmap_ndk.z.so)
+target_link_libraries(vap PUBLIC libimage_source.so)
+target_link_libraries(vap PUBLIC libpixelmap.so)
+#target_link_libraries(vap PUBLIC nlohmann_json::nlohmann_json)
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/audio_decoder.cpp b/ohos/vap/vap_module/src/main/cpp/audio_decoder.cpp
new file mode 100644
index 00000000..acab4277
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/audio_decoder.cpp
@@ -0,0 +1,211 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "audio_decoder.h"
+
+#include <multimedia/player_framework/native_avcodec_audiocodec.h>
+#include <multimedia/player_framework/native_avcodec_audiodecoder.h>
+
+#include "log.h"
+
+#undef LOG_TAG
+#define LOG_TAG "AudioDecoder"
+
+namespace {
+void OnCodecError(OH_AVCodec *codec, int32_t errorCode, void *userData)
+{
+    (void)codec;
+    (void)errorCode;
+    (void)userData;
+    LOGE("On codec error, error code: %{public}d", errorCode);
+}
+
+void OnCodecFormatChange(OH_AVCodec *codec, OH_AVFormat *format, void *userData)
+{
+    LOGI("On codec format change");
+}
+
+void OnNeedInputBuffer(OH_AVCodec *codec, uint32_t index, OH_AVBuffer *buffer, void *userData)
+{
+    if (userData == nullptr) {
+        return;
+    }
+    (void)codec;
+    ADecSignal *m_signal = static_cast<ADecSignal *>(userData);
+    std::unique_lock<std::mutex> lock(m_signal->audioInputMutex);
+    m_signal->audioInputBufferInfoQueue.emplace(index, buffer, codec);
+    m_signal->audioInputCond.notify_all();
+}
+
+void OnNewOutputBuffer(OH_AVCodec *codec, uint32_t index, OH_AVBuffer *buffer, void *userData)
+{
+    if (userData == nullptr) {
+        return;
+    }
+    (void)codec;
+    ADecSignal *m_signal = static_cast<ADecSignal *>(userData);
+    std::unique_lock<std::mutex> lock(m_signal->audioOutputMutex);
+    m_signal->audioOutputBufferInfoQueue.emplace(index, buffer, codec);
+    m_signal->audioOutputCond.notify_all();
+}
+}
+
+AudioDecoder::~AudioDecoder()
+{
+    Release();
+}
+
+int32_t AudioDecoder::CreateAudioDecoder(const std::string &codecMime)
+{
+    decoder_ = OH_AudioCodec_CreateByMime(codecMime.c_str(), false);
+    if (decoder_ == nullptr) {
+        LOGE("create audio decoder_ failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t AudioDecoder::SetCallback(ADecSignal *signal)
+{
+    int32_t ret = AV_ERR_OK;
+    ret = OH_AudioCodec_RegisterCallback(decoder_, {OnCodecError, OnCodecFormatChange,
+                                            OnNeedInputBuffer, OnNewOutputBuffer}, signal);
+    if (ret != AV_ERR_OK) {
+        LOGE("Set callback failed, ret: %{public}d", ret);
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t AudioDecoder::ConfigureAudioDecoder(const VAPInfo &sampleInfo)
+{
+    OH_AVFormat *format = OH_AVFormat_Create();
+    if (format == nullptr) {
+        LOGE("AVFormat create failed");
+        return AV_ERR_UNKNOWN;
+    }
+    OH_AVFormat_SetIntValue(format, OH_MD_KEY_AUD_SAMPLE_RATE, sampleInfo.sampleRate);
+    OH_AVFormat_SetLongValue(format, OH_MD_KEY_BITRATE, sampleInfo.audioBitrate);
+    OH_AVFormat_SetIntValue(format, OH_MD_KEY_AUD_CHANNEL_COUNT, sampleInfo.channelCount);
+    if (strcmp(sampleInfo.audioCodecMime.c_str(), "audio/mp4a-latm") == 0) {
+        OH_AVFormat_SetIntValue(format, OH_MD_KEY_AAC_IS_ADTS, 1);
+        LOGD("audio mime is aac");
+    } else {
+        LOGD("audio mime is not aac");
+    }
+    LOGD("AudioDecoder config: %{public}d - %{public}ld = %{public}d", sampleInfo.sampleRate,
+        sampleInfo.audioBitrate, sampleInfo.channelCount);
+    int ret = OH_AudioCodec_Configure(decoder_, format);
+    if (ret != AV_ERR_OK) {
+        LOGE("Config failed, ret: %{public}d", ret);
+        return AV_ERR_UNKNOWN;
+    }
+    OH_AVFormat_Destroy(format);
+    format = nullptr;
+
+    return AV_ERR_OK;
+}
+
+int32_t AudioDecoder::Config(const VAPInfo &sampleInfo, ADecSignal *signal)
+{
+    if (decoder_ == nullptr) {
+        LOGE("Decoder is null");
+        return AV_ERR_UNKNOWN;
+    }
+    if (signal == nullptr) {
+        LOGE("Invalid param: codecUserData");
+        return AV_ERR_UNKNOWN;
+    }
+
+    int32_t ret = ConfigureAudioDecoder(sampleInfo);
+    if (ret != AV_ERR_OK) {
+        LOGE("Configure failed");
+        return AV_ERR_UNKNOWN;
+    }
+    
+    ret = SetCallback(signal);
+    if (ret != AV_ERR_OK) {
+        LOGE("Set callback failed, ret: %{public}d", ret);
+        return AV_ERR_UNKNOWN;
+    }
+    
+    ret = OH_AudioCodec_Prepare(decoder_);
+    if (ret != AV_ERR_OK) {
+        LOGE("audio Prepare failed, ret: %{public}d", ret);
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t AudioDecoder::StartAudioDecoder()
+{
+    if (decoder_ == nullptr) {
+        LOGE("Decoder is null");
+        return AV_ERR_UNKNOWN;
+    }
+
+    int ret = OH_AudioCodec_Start(decoder_);
+    if (ret != AV_ERR_OK) {
+        LOGE("audio Start failed, ret: %{public}d", ret);
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t AudioDecoder::PushInputData(AudioCodecBufferInfo &info)
+{
+    if (decoder_ == nullptr) {
+        LOGE("Decoder is null");
+        return AV_ERR_UNKNOWN;
+    }
+    int32_t ret = OH_AVBuffer_SetBufferAttr(info.bufferOrigin, &info.attr);
+    if (ret != AV_ERR_OK) {
+        LOGE("Set avbuffer attr failed");
+        return AV_ERR_UNKNOWN;
+    }
+    ret = OH_AudioCodec_PushInputBuffer(decoder_, info.bufferIndex);
+    if (ret != AV_ERR_OK) {
+        LOGE("Push input data failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t AudioDecoder::FreeOutputData(uint32_t bufferIndex, bool render)
+{
+    if (decoder_ == nullptr) {
+        LOGE("Decoder is null");
+        return AV_ERR_UNKNOWN;
+    }
+
+    int32_t ret = AV_ERR_OK;
+    ret = OH_AudioCodec_FreeOutputBuffer(decoder_, bufferIndex);
+    if (ret != AV_ERR_OK) {
+        LOGE("audio Free output data failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t AudioDecoder::Release()
+{
+    if (decoder_ != nullptr) {
+        OH_AudioCodec_Flush(decoder_);
+        OH_AudioCodec_Stop(decoder_);
+        OH_AudioCodec_Destroy(decoder_);
+        decoder_ = nullptr;
+    }
+    return AV_ERR_OK;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/demuxer.cpp b/ohos/vap/vap_module/src/main/cpp/demuxer.cpp
new file mode 100644
index 00000000..48f232de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/demuxer.cpp
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <log.h>
+#include "demuxer.h"
+
+Demuxer::~Demuxer()
+{
+    Release();
+}
+
+int32_t Demuxer::CreateDemuxer(VAPInfo &info)
+{
+    source_ = OH_AVSource_CreateWithFD(info.inputFd, info.inputFileOffset, info.inputFileSize);
+    if (source_ == nullptr) {
+        LOGE("create source_ failed");
+        return AV_ERR_UNKNOWN;
+    }
+
+    demuxer_ = OH_AVDemuxer_CreateWithSource(source_);
+    if (demuxer_ == nullptr) {
+        LOGE("create demuxer_ failed");
+        return AV_ERR_UNKNOWN;
+    }
+
+    auto sourceFormat = std::shared_ptr<OH_AVFormat>(OH_AVSource_GetSourceFormat(source_), OH_AVFormat_Destroy);
+    if (sourceFormat == nullptr) {
+        LOGE("get source_ format failed");
+        return AV_ERR_UNKNOWN;
+    }
+
+    int32_t ret = GetTrackInfo(sourceFormat, info);
+    if (ret != AV_ERR_OK) {
+        LOGE("get track info failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t Demuxer::GetTrackInfo(std::shared_ptr<OH_AVFormat> sourceFormat, VAPInfo &info)
+{
+    int32_t trackCount = 0;
+    OH_AVFormat_GetIntValue(sourceFormat.get(), OH_MD_KEY_TRACK_COUNT, &trackCount);
+    for (int32_t index = 0; index < trackCount; index++) {
+        int trackType = -1;
+        auto trackFormat = std::shared_ptr<OH_AVFormat>(OH_AVSource_GetTrackFormat(source_, index),
+                                                        OH_AVFormat_Destroy);
+        OH_AVFormat_GetIntValue(trackFormat.get(), OH_MD_KEY_TRACK_TYPE, &trackType);
+        if (trackType == MEDIA_TYPE_VID) {
+            OH_AVDemuxer_SelectTrackByID(demuxer_, index);
+            OH_AVFormat_GetIntValue(trackFormat.get(), OH_MD_KEY_WIDTH, &info.videoWidth);
+            OH_AVFormat_GetIntValue(trackFormat.get(), OH_MD_KEY_HEIGHT, &info.videoHeight);
+            OH_AVFormat_GetDoubleValue(trackFormat.get(), OH_MD_KEY_FRAME_RATE, &info.frameRate);
+            OH_AVFormat_GetLongValue(trackFormat.get(), OH_MD_KEY_BITRATE, &info.bitrate);
+            OH_AVFormat_GetIntValue(trackFormat.get(), "video_is_hdr_vivid", &info.isHDRVivid);
+            OH_AVFormat_GetIntValue(trackFormat.get(), OH_MD_KEY_ROTATION, &info.rotation);
+            char *codecMime;
+            OH_AVFormat_GetStringValue(trackFormat.get(), OH_MD_KEY_CODEC_MIME, const_cast<char const **>(&codecMime));
+            info.codecMime = codecMime;
+            OH_AVFormat_GetIntValue(trackFormat.get(), OH_MD_KEY_PROFILE, &info.hevcProfile);
+            videoTrackId_ = index;
+
+            LOGI("Demuxer config: %{public}d*%{public}d, %{public}.1ffps, %{public}ld" "kbps",
+                info.videoWidth, info.videoHeight, info.frameRate, info.bitrate / ONE_K);
+        } else if (trackType == MEDIA_TYPE_AUD) {
+            OH_AVDemuxer_SelectTrackByID(demuxer_, index);
+            OH_AVFormat_GetLongValue(trackFormat.get(), OH_MD_KEY_BITRATE, &info.audioBitrate);
+            OH_AVFormat_GetIntValue(trackFormat.get(),
+                OH_MD_KEY_AUD_SAMPLE_RATE, reinterpret_cast<int32_t *>(&info.sampleRate));
+            OH_AVFormat_GetIntValue(trackFormat.get(),
+                OH_MD_KEY_AUD_CHANNEL_COUNT, reinterpret_cast<int32_t *>(&info.channelCount));
+
+            char *audioCodecMime;
+            OH_AVFormat_GetStringValue(trackFormat.get(),
+                OH_MD_KEY_CODEC_MIME, const_cast<char const **>(&audioCodecMime));
+            info.audioCodecMime = audioCodecMime;
+            audioTrackId_ = index;
+
+            LOGI("Audio Demuxer config: %{public}d %{public}d, %{public}ld"
+                 "kbps",
+                 info.channelCount, info.sampleRate, info.audioBitrate / ONE_K);
+        }
+    }
+    return AV_ERR_OK;
+}
+
+int32_t Demuxer::ReadSample(OH_AVBuffer *buffer, OH_AVCodecBufferAttr &attr)
+{
+    int32_t ret = OH_AVDemuxer_ReadSampleBuffer(demuxer_, videoTrackId_, buffer);
+    if (ret != AV_ERR_OK) {
+        LOGE("read sample failed");
+        return AV_ERR_UNKNOWN;
+    }
+    
+    ret = OH_AVBuffer_GetBufferAttr(buffer, &attr);
+    if (ret != AV_ERR_OK) {
+        LOGE("get buffer attr failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t Demuxer::ReadAudioSample(OH_AVBuffer *buffer, OH_AVCodecBufferAttr &attr)
+{
+    int32_t ret = OH_AVDemuxer_ReadSampleBuffer(demuxer_, audioTrackId_, buffer);
+    if (ret != AV_ERR_OK) {
+        LOGE("read audio sample failed");
+        return AV_ERR_UNKNOWN;
+    }
+
+    ret = OH_AVBuffer_GetBufferAttr(buffer, &attr);
+    if (ret != AV_ERR_OK) {
+        LOGE("get audio buffer attr failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t Demuxer::Release()
+{
+    if (source_ != nullptr) {
+        OH_AVSource_Destroy(source_);
+        source_ = nullptr;
+    }
+    if (demuxer_ != nullptr) {
+        OH_AVDemuxer_Destroy(demuxer_);
+        demuxer_ = nullptr;
+    }
+    return AV_ERR_OK;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/audio_decoder.h b/ohos/vap/vap_module/src/main/cpp/include/audio_decoder.h
new file mode 100644
index 00000000..63b54324
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/audio_decoder.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_AUDIO_DECODER_H
+#define VAP_AUDIO_DECODER_H
+
+#include "multimedia/player_framework/native_avcodec_videodecoder.h"
+#include "multimedia/player_framework/native_avbuffer_info.h"
+#include "data_info.h"
+
+class AudioDecoder {
+public:
+    AudioDecoder() = default;
+    ~AudioDecoder();
+
+    int32_t CreateAudioDecoder(const std::string &codecMime);
+    int32_t ConfigureAudioDecoder(const VAPInfo &sampleInfo);
+    int32_t Config(const VAPInfo &sampleInfo, ADecSignal *signal);
+    int32_t StartAudioDecoder();
+    int32_t PushInputData(AudioCodecBufferInfo &info);
+    int32_t FreeOutputData(uint32_t bufferIndex, bool render);
+    int32_t Release();
+
+private:
+    int32_t SetCallback(ADecSignal *signal);
+
+    bool isAVBufferMode_ = false;
+    OH_AVCodec *decoder_ = nullptr;
+};
+#endif // VAP_AUDIO_DECODER_H
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/common_const.h b/ohos/vap/vap_module/src/main/cpp/include/common_const.h
new file mode 100644
index 00000000..a19a48e5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/common_const.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef COMMON_CONST_H
+#define COMMON_CONST_H
+
+#include <cstdint>
+
+namespace CommonConst {
+    static constexpr int32_t ZERO = 0;
+    static constexpr int32_t ONE = 1;
+    static constexpr int32_t TWO = 2;
+    static constexpr int32_t THREE = 3;
+    static constexpr int32_t FOUR = 4;
+    static constexpr int32_t FIVE = 5;
+    static constexpr int32_t SIX = 6;
+    static constexpr int32_t SEVEN = 7;
+    static constexpr int32_t EIGHT = 8;
+
+    static constexpr int32_t THREE_TIME_EIGHT = 24;
+    static constexpr int32_t TWO_TIME_EIGHT = 16;
+
+    static constexpr int32_t NEGATIVE_ONE = -1;
+    static constexpr int32_t NINETY_DEGREES = 90;
+
+    static constexpr int32_t ONE_EIGHT_HEX = 0xff;
+}
+
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/data_info.h b/ohos/vap/vap_module/src/main/cpp/include/data_info.h
new file mode 100644
index 00000000..70c991cd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/data_info.h
@@ -0,0 +1,233 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_DATATYPE_INFO_H
+#define VAP_DATATYPE_INFO_H
+
+#include <EGL/eglplatform.h>
+#include <bits/alltypes.h>
+#include <cstdint>
+#include <js_native_api_types.h>
+#include <multimedia/player_framework/native_avcodec_videoencoder.h>
+#include <ohaudio/native_audiostream_base.h>
+#include <string>
+#include <condition_variable>
+#include <queue>
+#include <native_buffer/native_buffer.h>
+#include "mix_render.h"
+#include "multimedia/player_framework/native_avcodec_base.h"
+#include "multimedia/player_framework/native_avbuffer.h"
+
+#define ANNEXB_INPUT_ONLY 1
+
+const std::string_view MIME_VIDEO_AVC = "video/avc";
+const std::string_view MIME_VIDEO_HEVC = "video/hevc";
+
+constexpr int32_t BITRATE_10M = 10 * 1024 * 1024; // 10Mbps
+constexpr int32_t BITRATE_20M = 20 * 1024 * 1024; // 20Mbps
+constexpr int32_t BITRATE_30M = 30 * 1024 * 1024; // 30Mbps
+
+struct AudioInitData {
+    OH_AudioStream_Type type = AUDIOSTREAM_TYPE_RENDERER;
+    int32_t samplingRate = 48000;
+    int32_t channelCount = 2;
+    OH_AudioStream_SampleFormat format = AUDIOSTREAM_SAMPLE_S16LE;
+    OH_AudioStream_EncodingType encodingType = AUDIOSTREAM_ENCODING_TYPE_RAW;
+    OH_AudioStream_Usage usage = AUDIOSTREAM_USAGE_MUSIC;
+};
+
+struct VAPInfo {
+    int32_t sampleId = 0;
+    int32_t inputFd = -1;
+    int32_t outFd = -1;
+    int64_t inputFileOffset = 0;
+    int64_t inputFileSize = 0;
+    std::string inputFilePath;
+    std::string outputFilePath;
+    std::string codecMime = MIME_VIDEO_AVC.data();
+    int32_t videoWidth = 0;
+    int32_t videoHeight = 0;
+    double frameRate = 0.0;
+    int64_t bitrate = 10 * 1024 * 1024; // 10Mbps;
+
+    int64_t audioBitrate;
+    uint32_t sampleRate;
+    uint32_t channelCount;
+    std::string audioCodecMime;
+
+    int64_t frameInterval = 0;
+    int32_t perfmode = 0;
+    int64_t durationTime = 0;
+    uint32_t maxFrames = UINT32_MAX;
+    int32_t isHDRVivid = 0;
+    uint32_t repeatTimes = 1;
+    OH_AVPixelFormat pixelFormat = AV_PIXEL_FORMAT_NV12; // AV_PIXEL_FORMAT_YUVI420;
+    bool needDumpOutput = false;
+    uint32_t bitrateMode = CBR;
+    int32_t hevcProfile = HEVC_PROFILE_MAIN;
+    int32_t rotation = 0;
+    NativeWindow* window = nullptr;
+
+    uint32_t bufferSize = 0;
+    double readTime = 0;
+    double memcpyTime = 0;
+    double writeTime = 0;
+    
+    void (*playDoneCallback)(void *context) = nullptr;
+    void *playDoneCallbackData = nullptr;
+    
+    int32_t width;
+    int32_t height;
+    std::string uri;
+    std::map<std::string, MixInputData> iptData;
+};
+
+struct CodecBufferInfo {
+    uint32_t bufferIndex = 0;
+    uintptr_t *buffer = nullptr;
+    uint8_t *bufferAddr = nullptr;
+    OH_AVCodec *codec = nullptr;
+    OH_AVBuffer *bufferOrigin = nullptr;
+    OH_AVCodecBufferAttr attr = {0, 0, 0, AVCODEC_BUFFER_FLAGS_NONE};
+
+    CodecBufferInfo(uint8_t *addr) : bufferAddr(addr){};
+    CodecBufferInfo(uint8_t *addr, int32_t bufferSize)
+        : bufferAddr(addr), attr({0, bufferSize, 0, AVCODEC_BUFFER_FLAGS_NONE}){};
+    CodecBufferInfo(uint32_t argBufferIndex, OH_AVMemory *argBuffer, OH_AVCodecBufferAttr argAttr)
+        : bufferIndex(argBufferIndex), buffer(reinterpret_cast<uintptr_t *>(argBuffer)), attr(argAttr){};
+    CodecBufferInfo(uint32_t argBufferIndex, OH_AVMemory *argBuffer)
+        : bufferIndex(argBufferIndex), buffer(reinterpret_cast<uintptr_t *>(argBuffer)){};
+    CodecBufferInfo(uint32_t argBufferIndex, OH_AVBuffer *argBuffer)
+        : bufferIndex(argBufferIndex), buffer(reinterpret_cast<uintptr_t *>(argBuffer))
+    {
+        OH_AVBuffer_GetBufferAttr(argBuffer, &attr);
+    };
+
+    CodecBufferInfo(uint32_t argBufferIndex, OH_AVBuffer *argBuffer, OH_AVCodec *argCodec)
+        : bufferIndex(argBufferIndex), bufferOrigin(argBuffer), codec(argCodec)
+    {
+        OH_AVBuffer_GetBufferAttr(argBuffer, &attr);
+    };
+};
+
+struct AudioCodecBufferInfo {
+    uint32_t bufferIndex = 0;
+    uint8_t *bufferAddr = nullptr;
+    OH_AVCodec *codec = nullptr;
+    OH_AVBuffer *bufferOrigin = nullptr;
+    OH_AVCodecBufferAttr attr = {0, 0, 0, AVCODEC_BUFFER_FLAGS_NONE};
+
+    AudioCodecBufferInfo(uint32_t argBufferIndex, OH_AVBuffer *argBuffer, OH_AVCodec *argCodec)
+        : bufferIndex(argBufferIndex), bufferOrigin(argBuffer), codec(argCodec)
+    {
+        OH_AVBuffer_GetBufferAttr(argBuffer, &attr);
+    };
+};
+
+class ADecSignal {
+public:
+    std::mutex audioInputMutex;
+    std::condition_variable audioInputCond;
+    std::queue<AudioCodecBufferInfo> audioInputBufferInfoQueue;
+    std::mutex audioOutputMutex;
+    std::condition_variable audioOutputCond;
+    std::queue<AudioCodecBufferInfo> audioOutputBufferInfoQueue;
+    std::mutex renderMutex;
+    std::condition_variable renderCond;
+    std::queue<uint8_t> renderQueue;
+    bool isInterrupt = false;
+
+    void ClearQueue()
+    {
+        {
+            std::unique_lock<std::mutex> lock(audioInputMutex);
+            auto emptyQueue = std::queue<AudioCodecBufferInfo>();
+            audioInputBufferInfoQueue.swap(emptyQueue);
+        }
+        {
+            std::unique_lock<std::mutex> lock(audioOutputMutex);
+            auto emptyQueue = std::queue<AudioCodecBufferInfo>();
+            audioOutputBufferInfoQueue.swap(emptyQueue);
+        }
+    }
+};
+
+class VDecSignal {
+public:
+    uint32_t inputFrameCount = 0;
+    std::mutex inputMutex;
+    std::condition_variable inputCond;
+    std::queue<CodecBufferInfo> inputBufferInfoQueue;
+
+    uint32_t outputFrameCount = 0;
+    std::mutex outputMutex;
+    std::condition_variable outputCond;
+    std::queue<CodecBufferInfo> outputBufferInfoQueue;
+
+    void ClearQueue()
+    {
+        {
+            std::unique_lock<std::mutex> lock(inputMutex);
+            auto emptyQueue = std::queue<CodecBufferInfo>();
+            inputBufferInfoQueue.swap(emptyQueue);
+        }
+        {
+            std::unique_lock<std::mutex> lock(outputMutex);
+            auto emptyQueue = std::queue<CodecBufferInfo>();
+            outputBufferInfoQueue.swap(emptyQueue);
+        }
+    }
+};
+
+enum VapState {
+    UNKNOWN,
+    READY,
+    START,
+    RENDER,
+    COMPLETE,
+    DESTROY,
+    FAILED
+};
+
+struct JSAnimConfig {
+    int32_t version;
+    int32_t totalFrames;
+    int32_t width;
+    int32_t height;
+    int32_t videoWidth;
+    int32_t videoHeight;
+    Orien orien;
+    int32_t fps;
+    bool isMix;
+    PointRect alphaPointRect;
+    PointRect rgbPointRect;
+    int32_t currentFrame;
+};
+
+enum class VideoFitType {
+    FIT_XY,
+    FIT_CENTER,
+    CENTER_CROP
+};
+
+typedef struct CallbackContext {
+    napi_env env = nullptr;
+    napi_ref callbackRef = nullptr;
+    VapState vapState = VapState::UNKNOWN;
+    int32_t err;
+    JSAnimConfig jsAnimConfig;
+} CallbackContext;
+
+#endif // VAP_DATATYPE_INFO_H
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/demuxer.h b/ohos/vap/vap_module/src/main/cpp/include/demuxer.h
new file mode 100644
index 00000000..e2ef235f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/demuxer.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_DEMUXER_H
+#define VAP_DEMUXER_H
+
+#include <bits/alltypes.h>
+#include "multimedia/player_framework/native_avdemuxer.h"
+#include "data_info.h"
+
+static constexpr int32_t ONE_K = 1024;
+
+class Demuxer {
+public:
+    ~Demuxer();
+    int32_t CreateDemuxer(VAPInfo &sampleInfo);
+    int32_t GetTrackInfo(std::shared_ptr<OH_AVFormat> sourceFormat, VAPInfo &info);
+    int32_t ReadSample(OH_AVBuffer *buffer, OH_AVCodecBufferAttr &attr);
+    int32_t ReadAudioSample(OH_AVBuffer *buffer, OH_AVCodecBufferAttr &attr);
+    int32_t Release();
+
+    bool hasAudio() { return audioTrackId_ != -1; }
+    bool hasVideo() { return videoTrackId_ != -1; }
+
+private:
+    OH_AVSource *source_ = nullptr;
+    OH_AVDemuxer *demuxer_ = nullptr;
+    int32_t videoTrackId_ = -1;
+    int32_t audioTrackId_ = -1;
+};
+
+#endif // VAP_DEMUXER_H
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/mask/mask_config.h b/ohos/vap/vap_module/src/main/cpp/include/mask/mask_config.h
new file mode 100644
index 00000000..6b512169
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/mask/mask_config.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_MASK_CONFIG_H
+#define VAP_MASK_CONFIG_H
+
+#include <multimedia/image_framework/image/pixelmap_native.h>
+#include <tuple>
+
+#include "texture_load_util.h"
+#include "vertex_util.h"
+
+class MaskConfig {
+public:
+    MaskConfig(int32_t width, int32_t height);
+    ~MaskConfig();
+    
+    int32_t GetMaskTexId();
+    int32_t UpdateMaskTex(BitMap alphaMaskBitmap);
+
+public:
+    std::tuple<PointRect, RefVec2> maskTexPair_ =
+        std::move(std::make_tuple(PointRect(0, 0, 0, 0), RefVec2(0, 0)));
+
+    std::tuple<PointRect, RefVec2> maskPositionPair_ =
+        std::move(std::make_tuple(PointRect(0, 0, 0, 0), RefVec2(0, 0)));
+
+    int32_t width_; // animConfig width
+    int32_t height_;
+private:
+    GLuint maskTexId_ = 0;
+};
+
+#endif // VAP_MASK_CONFIG_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/mask/mask_render.h b/ohos/vap/vap_module/src/main/cpp/include/mask/mask_render.h
new file mode 100644
index 00000000..d85c57f8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/mask/mask_render.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_MASK_RENDER_H
+#define VAP_MASK_RENDER_H
+
+#include "mask_config.h"
+#include "mask_shader.h"
+#include "vertex_util.h"
+
+class MaskRender {
+public:
+    MaskRender(bool edgeBlur);
+    void RenderFrame(MaskConfig maskConfig);
+    
+public:
+    std::unique_ptr<MaskShader> m_maskShader;
+    VertexUtil m_vertexArray;
+    
+private:
+    VertexUtil m_maskArray;
+};
+
+#endif // VAP_MASK_RENDER_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/mask/mask_shader.h b/ohos/vap/vap_module/src/main/cpp/include/mask/mask_shader.h
new file mode 100644
index 00000000..790f5a97
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/mask/mask_shader.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_MASK_SHADER_H
+#define VAP_MASK_SHADER_H
+
+#include <stdint.h>
+#include "shader_util.h"
+
+static constexpr char MASK_VERTEX[] =
+    "attribute vec4 vPosition;\n"
+    "attribute vec4 vTexCoordinateAlphaMask;\n"
+    "varying vec2 v_TexCoordinateAlphaMask;\n"
+    "\n"
+    "void main() {\n"
+    "    v_TexCoordinateAlphaMask = vec2(vTexCoordinateAlphaMask.x, vTexCoordinateAlphaMask.y);\n"
+    "    gl_Position = vPosition;\n"
+    "}\n\0";
+
+static constexpr char FRAGMENT_BLUR_EDGE[] =
+    "precision mediump float;\n"
+    "uniform sampler2D uTextureAlphaMask;\n"
+    "varying vec2 v_TexCoordinateAlphaMask;\n"
+    "mat3 weight = mat3(0.0625,0.125,0.0625,0.125,0.25,0.125,0.0625,0.125,0.0625);\n "
+    "int coreSize=3;\n"
+    "float texelOffset = .01;\n"
+    "\n"
+    "void main() {\n"
+    "   float alphaResult = 0.;\n"
+    "   for(int y = 0; y < coreSize; y++) {\n"
+    "       for(int x = 0;x < coreSize; x++) {\n"
+    "           alphaResult += texture2D(uTextureAlphaMask, vec2(v_TexCoordinateAlphaMask.x + (-1.0 + float(x)) * "
+    "texelOffset,v_TexCoordinateAlphaMask.y + (-1.0 + float(y)) * texelOffset)).a * weight[x][y];\n"
+    "       }\n"
+    "    }\n"
+    "    gl_FragColor = vec4(0, 0, 0, alphaResult);\n"
+    "}\n\0";
+
+static constexpr char FRAGMENT_NO_BLUR_EDGE[] =
+    "precision mediump float;\n"
+    "uniform sampler2D uTextureAlphaMask;\n"
+    "varying vec2 v_TexCoordinateAlphaMask;\n"
+    "\n"
+    "void main () {\n"
+    "    vec4 alphaMaskColor = texture2D(uTextureAlphaMask, v_TexCoordinateAlphaMask);\n"
+    "    gl_FragColor = vec4(0, 0, 0, alphaMaskColor.a);\n"
+    "}\n\0";
+
+static constexpr char FRAGMENT_ROW[] =
+    "precision mediump float;\n"
+    "uniform sampler2D uTextureAlphaMask;\n"
+    "varying vec2 v_TexCoordinateAlphaMask;\n"
+    "vec3 weight = vec3(0.4026,0.2442,0.0545);\n "
+    "\n"
+    "void main() {\n"
+    "   float texelOffset = .01;\n"
+    "   vec2 uv[5];\n"
+    "   uv[0]= v_TexCoordinateAlphaMask;\n"
+    "   uv[1]=vec2(uv[0].x+texelOffset*1.0,  uv[0].y);\n"
+    "   uv[2]=vec2(uv[0].x-texelOffset*1.0,  uv[0].y);\n"
+    "   uv[3]=vec2(uv[0].x+texelOffset*2.0,  uv[0].y);\n"
+    "   uv[4]=vec2(uv[0].x-texelOffset*2.0,  uv[0].y);\n"
+    "   float alphaResult = texture2D(uTextureAlphaMask, uv[0]).a * weight[0];\n"
+    "   for(int i = 1; i < 3; ++i) {\n"
+    "       alphaResult += texture2D(uTextureAlphaMask, uv[2*i-1]).a * weight[i];\n"
+    "       alphaResult += texture2D(uTextureAlphaMask, uv[2*i]).a * weight[i];\n"
+    "    }\n"
+    "    gl_FragColor = vec4(0, 0, 0, alphaResult);\n"
+    "}\n\0";
+
+class MaskShader {
+public:
+    MaskShader(bool edgeBlurBoolean = false);
+    
+    void UseProgram();
+    
+public:
+    int32_t m_uTextureMaskUnitLocation;
+    int32_t m_aPositionLocation;
+    int32_t m_aTextureMaskCoordinatesLocation;
+    
+private:
+    int32_t m_program;
+    
+private:
+    const char *U_TEXTURE_ALPHA_MASK_UNIT = "uTextureAlphaMask";
+    const char *A_POSITION = "vPosition";
+    const char *A_TEXTURE_MASK_COORDINATES = "vTexCoordinateAlphaMask";
+};
+
+#endif // VAP_MASK_SHADER_H
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/mix/frame.h b/ohos/vap/vap_module/src/main/cpp/include/mix/frame.h
new file mode 100644
index 00000000..ecc30bd6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/mix/frame.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_FRAME_H
+#define VAP_FRAME_H
+
+#include <string>
+#include <vector>
+
+#include <nlohmann/json.hpp>
+#include "vertex_util.h"
+
+using json = nlohmann::json;
+
+class Frame {
+public:
+    Frame(json jsonObj);
+    
+    std::string srcId = "";
+    int32_t z = 0;
+    PointRect frame;
+    PointRect mFrame;
+    int32_t mt = 0; // 遮罩旋转角度v2 版本只支持 0 与 90度
+
+    bool operator<(const Frame &f) const { return z < f.z; }
+    void PrintInfo();
+};
+
+class FrameSet {
+public:
+    FrameSet(json jsonObj);
+    
+    std::vector<Frame> frames;
+    int index;
+};
+
+class FrameAll {
+public:
+    FrameAll(json jsonObj);
+    
+    std::map<int, FrameSet> frameAll;
+};
+#endif // VAP_FRAME_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/mix/mix_render.h b/ohos/vap/vap_module/src/main/cpp/include/mix/mix_render.h
new file mode 100644
index 00000000..c0918c58
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/mix/mix_render.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_MIX_RENDER_H
+#define VAP_MIX_RENDER_H
+
+#include <cstdint>
+#include <native_drawing/drawing_text_typography.h>
+#include <vector>
+
+#include "anim_config.h"
+#include "frame.h"
+#include "mix_shader.h"
+#include "resource_request.h"
+#include "src.h"
+#include "texture_load_util.h"
+#include "vertex_util.h"
+
+struct MixConfigSize {
+    int32_t width;
+    int32_t height;
+    int32_t videoWidth;
+    int32_t videoHeight;
+};
+
+#define SET_COLOR 0x01
+#define SET_TEXT_ALIGN 0x02
+#define SET_FONT_WEIGHT 0x04
+
+struct MixInputData {
+    std::string txt = "DEFAULT_TEXT";
+    std::string imgUri = "DEFAULT_URI";
+    
+    uint8_t isSet = 0;
+    ColorARGB color;
+    OH_Drawing_TextAlign textAlign;
+    OH_Drawing_FontWeight fontWeight;
+};
+
+class MixRender {
+public:
+    MixRender(std::map<std::string, MixInputData> iptData);
+    ~MixRender();
+    
+    void Init();
+    void GenSrcTexture(Src src, BitMap &bitmap, const MixInputData mixData);
+    void RenderFrame(MixConfigSize config, Frame frame, Src src);
+    void SetVideoTextureId(GLuint id);
+    void SetAnimConfig(std::shared_ptr<AnimConfig> animConfig)
+    {
+        m_animConfig = animConfig;
+        Init();
+    }
+    
+    GLuint videoTextureId;
+    std::unique_ptr<MixShader> m_shader;
+    VertexUtil m_vertexArray;
+    VertexUtil m_srcArray;
+    VertexUtil m_maskArray;
+    std::shared_ptr<AnimConfig> m_animConfig;
+    bool haveSrc = false;
+    
+private:
+    void GenSrcCoordsArray(VertexUtil &array, int32_t fw, int32_t fh, int32_t sw, int32_t sh, FitType fitType);
+    
+    std::vector<GLuint> m_textureIds;
+    std::map<std::string, MixInputData> m_mixData;
+};
+
+#endif // VAP_MIX_RENDER_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/mix/mix_shader.h b/ohos/vap/vap_module/src/main/cpp/include/mix/mix_shader.h
new file mode 100644
index 00000000..046a5aa6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/mix/mix_shader.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_MIX_SHADER_H
+#define VAP_MIX_SHADER_H
+
+#include <stdint.h>
+
+#include "shader_util.h"
+
+static constexpr char VERTEX[] =
+    "attribute vec4 a_Position;\n"
+     "attribute vec2 a_TextureSrcCoordinates;\n"
+     "attribute vec2 a_TextureMaskCoordinates;\n"
+     "varying vec2 v_TextureSrcCoordinates;\n"
+     "varying vec2 v_TextureMaskCoordinates;\n"
+     "void main()\n"
+     "{\n"
+     "    v_TextureSrcCoordinates = a_TextureSrcCoordinates;\n"
+     "    v_TextureMaskCoordinates = a_TextureMaskCoordinates;\n"
+     "    gl_Position = a_Position;\n"
+     "}\n\0";
+
+static constexpr char FRAGMENT[] =
+    "#extension GL_OES_EGL_image_external : require\n"
+    "precision mediump float; \n"
+    "uniform sampler2D u_TextureSrcUnit;\n"
+    "uniform sampler2D u_TextureMaskUnit;\n"
+    "uniform int u_isFill;\n"
+    "uniform vec4 u_Color;\n"
+    "varying vec2 v_TextureSrcCoordinates;\n"
+    "varying vec2 v_TextureMaskCoordinates;\n"
+    "void main()\n"
+    "{\n"
+    "    vec4 srcRgba = texture2D(u_TextureSrcUnit, v_TextureSrcCoordinates);\n"
+    "    vec4 maskRgba = texture2D(u_TextureMaskUnit, v_TextureMaskCoordinates);\n"
+    "    float isFill = step(0.5, float(u_isFill));\n"
+    "    vec4 srcRgbaCal = isFill * vec4(u_Color.r, u_Color.g, u_Color.b, srcRgba.a) + (1.0 - isFill) * srcRgba;\n"
+    "    gl_FragColor = vec4(srcRgbaCal.r, srcRgbaCal.g, srcRgbaCal.b, srcRgba.a * maskRgba.r);\n"
+    "}\n\0";
+
+class MixShader {
+public:
+    MixShader();
+    void UseProgram();
+    
+public:
+    // Shader program
+    int32_t m_program;
+
+    // Uniform locations
+    int32_t m_uTextureSrcUnitLocation;
+    int32_t m_uTextureMaskUnitLocation;
+    int32_t m_uIsFillLocation;
+    int32_t m_uColorLocation;
+
+    // Attribute locations
+    int32_t m_aPositionLocation;
+    int32_t m_aTextureSrcCoordinatesLocation;
+    int32_t m_aTextureMaskCoordinatesLocation;
+    
+private:
+    const char *U_TEXTURE_SRC_UNIT = "u_TextureSrcUnit";
+    const char *U_TEXTURE_MASK_UNIT = "u_TextureMaskUnit";
+    const char *U_IS_FILL = "u_isFill";
+    const char *U_COLOR = "u_Color";
+    
+    const char *A_POSITION = "a_Position";
+    const char *A_TEXTURE_SRC_COORDINATES = "a_TextureSrcCoordinates";
+    const char *A_TEXTURE_MASK_COORDINATES = "a_TextureMaskCoordinates";
+};
+
+#endif // VAP_MIX_SHADER_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/mix/src.h b/ohos/vap/vap_module/src/main/cpp/include/mix/src.h
new file mode 100644
index 00000000..d03d7d92
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/mix/src.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_SRC_H
+#define VAP_SRC_H
+
+#include <map>
+#include <string>
+
+#include <nlohmann/json.hpp>
+#include "log.h"
+
+enum class SrcType {
+    UNKNOWN,
+    IMG,
+    TXT,
+};
+
+enum class LoadType {
+    UNKNOWN,
+    NET,   // 网络加载的图片
+    LOCAL, // 本地加载的图片
+};
+
+enum class FitType {
+    FIT_XY,      // 按原始大小填充纹理
+    CENTER_FULL, // 以纹理中心点放置
+};
+
+enum class Style {
+    DEFAULT,
+    BOLD, // 文字粗体
+};
+
+using json = nlohmann::json;
+
+class Src {
+public:
+    Src(json jsonObj);
+    static std::map<std::string, SrcType> string2SrcType;
+    static SrcType stringToSrcTypeFunc(std::string str) { return string2SrcType[str]; }
+
+    static std::map<std::string, LoadType> string2LoadType;
+    static LoadType stringToLoadTypeFunc(std::string str) { return string2LoadType[str]; }
+
+    static std::map<std::string, FitType> string2FitType;
+    static FitType stringToFitTypeFunc(std::string str) { return string2FitType[str]; }
+
+    static std::map<std::string, Style> string2Style;
+    static Style stringToStyleFunc(std::string str) { return string2Style[str]; }
+
+    std::string srcId;
+    SrcType srcType = SrcType::UNKNOWN;
+    LoadType loadType = LoadType::UNKNOWN;
+    std::string srcTag;
+    int32_t color = 0;
+    Style style = Style::DEFAULT;
+    int32_t w = 0;
+    int32_t h = 0;
+    FitType fitType = FitType::FIT_XY;
+
+    int32_t drawWidth = 0;
+    int32_t drawHeight = 0;
+    std::string txt;
+    int32_t srcTextureId = 0;
+
+    void PrintInfo();
+};
+
+class SrcMap {
+public:
+    SrcMap(json jsonObj);
+    SrcMap() {}
+    
+    std::map<std::string, Src> srcSMap;
+};
+#endif // VAP_SRC_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/player.h b/ohos/vap/vap_module/src/main/cpp/include/player.h
new file mode 100644
index 00000000..7c014ec0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/player.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_PLAYER_H
+#define VAP_PLAYER_H
+
+#include <js_native_api.h>
+#include <mutex>
+#include <memory>
+#include <atomic>
+#include <thread>
+#include <unistd.h>
+#include "audio_decoder.h"
+#include "video_decoder.h"
+#include "demuxer.h"
+#include "egl_core.h"
+#include "data_info.h"
+
+enum class CallbackType {
+    UNKNOWN = -1,
+    PLAY_DONE,
+    STATE_CHANGE,
+    CLICK,
+};
+
+static constexpr int64_t MICROSECOND = 1000000;
+static constexpr int32_t DEFAULT_FRAME_RATE = 30;
+static constexpr int32_t AUDIO_SLEEP_TIME = 100;
+static constexpr int32_t AUDIO_CACHE = 5;
+
+class Player {
+public:
+    Player() {};
+    ~Player();
+
+    int32_t Init(VAPInfo &info);
+    int32_t Start();
+    void XComponentClick(int32_t eventX, int32_t eventY);
+    
+    void PauseAndResume();
+    void Stop();
+    void SetLoop(int32_t loops = 1) { loops_ = loops; }
+    void SetFitType(VideoFitType fitType) { fitType_ = fitType; }
+    void SetSpeed(float speed) { speed_ = speed; }
+    void SetVideoMode(VideoMode videoMode);
+    bool IsRunning() { return isStarted_; }
+    
+    void CallBackJS(VapState state, CallbackType type, int32_t err = -1);
+    void StartRelease();
+    void NoticeDestroyed()
+    {
+        isContainerDestroy_ = true;
+        Stop();
+    };
+    void SetCallback(CallbackType type, napi_ref callbackJS, void (*callbackFn)(void *context));
+    void ClearCallback(CallbackType type);
+    
+    std::unique_ptr<EGLCore> eglCore_ = nullptr;
+    napi_env env_ = nullptr;
+private:
+    void (*callbackAll_)(void *context) = nullptr;
+    std::map<CallbackType, napi_ref> callbackRefs_;
+    
+    bool isContainerDestroy_ = false;
+    bool isSetVideoMode_ = false;
+    VideoMode defaultVideoMode_ = VIDEO_MODE_SPLIT_HORIZONTAL;
+    JSAnimConfig jsAnimConfig_;
+    void InitJSAnimConfig();
+    int32_t loops_ = 1;
+    float speed_ = 1.0;
+
+    std::mutex pauseMutex_;
+    std::condition_variable pauseCond_;
+    bool isPause_{false};
+    
+    void InitAudioPlayer(AudioInitData audioInitData);
+    OH_AudioRenderer *audioRenderer_ = nullptr;
+    OH_AudioStreamBuilder *builder_ = nullptr;
+    
+    void Release();
+    void ReleaseAudio();
+    void DecInputThread();
+    void DecOutputThread();
+    void DecAudioInputThread();
+    void DecAudioOutputThread();
+    void RenderThread();
+
+    int32_t InitAudio();
+    void InitControlSignal();
+    void ResetControlSignal();
+    void GetBufferData(CodecBufferInfo bufferInfo);
+    void GetPCMData(AudioCodecBufferInfo bufferInfo);
+
+    std::mutex renderMutex_;
+    std::queue<std::vector<uint8_t>> renderQueue_;
+    std::unique_ptr<std::thread> renderThread_ = nullptr;
+    std::condition_variable renderCond_;
+
+    std::unique_ptr<Demuxer> demuxer_ = nullptr;
+    std::unique_ptr<VideoDecoder> videoDecoder_ = nullptr;
+    std::unique_ptr<AudioDecoder> audioDecoder_ = nullptr;
+    ADecSignal *audioSignal_ = nullptr;
+    VDecSignal *signal_ = nullptr;
+
+    std::atomic<bool> isStop_{false};
+    std::atomic<bool> isStarted_{false};
+    std::atomic<bool> isReleased_{false};
+    std::atomic<bool> isVideoEndOfFile_{false};
+
+    std::unique_ptr<std::thread> decAudioInputThread_ = nullptr;
+    std::unique_ptr<std::thread> decAudioOutputThread_ = nullptr;
+
+    std::mutex mutex_;
+    std::unique_ptr<std::thread> decInputThread_ = nullptr;
+    std::unique_ptr<std::thread> decOutputThread_ = nullptr;
+    VAPInfo sampleInfo_;
+    
+    int32_t stride_ = 0;
+    int32_t sliceHeight_ = 0;
+    int32_t frameCurIdx_ = 0;
+    
+    int32_t renderFrameCurIdx_ = 0;
+    VideoFitType fitType_ = VideoFitType::FIT_XY;
+};
+
+#endif // VAP_PLAYER_H
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/plugin_manager.h b/ohos/vap/vap_module/src/main/cpp/include/plugin_manager.h
new file mode 100644
index 00000000..e7410a06
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/plugin_manager.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_PLUGIN_MANAGER_H
+#define VAP_PLUGIN_MANAGER_H
+
+#include <string>
+#include <unordered_map>
+
+#include <js_native_api.h>
+#include <js_native_api_types.h>
+#include <ace/xcomponent/native_interface_xcomponent.h>
+#include <napi/native_api.h>
+
+#include "plugin_render.h"
+
+class PluginManager {
+public:
+    ~PluginManager();
+
+    static PluginManager *GetInstance()
+    {
+        return &PluginManager::m_pluginManager;
+    }
+
+    static napi_value GetContext(napi_env env, napi_callback_info info);
+
+    /* ************************APP Lifecycle****************************** */
+    static napi_value NapiOnCreate(napi_env env, napi_callback_info info);
+    static napi_value NapiOnShow(napi_env env, napi_callback_info info);
+    static napi_value NapiOnHide(napi_env env, napi_callback_info info);
+    static napi_value NapiOnDestroy(napi_env env, napi_callback_info info);
+
+    /* ***********************ArkTS Page : Lifecycle********************** */
+    static napi_value NapiToAppear(napi_env env, napi_callback_info info);
+    static napi_value NapiToDisappear(napi_env env, napi_callback_info info);
+    static napi_value NapiOnPageShow(napi_env env, napi_callback_info info);
+    static napi_value NapiOnPageHide(napi_env env, napi_callback_info info);
+
+    std::shared_ptr<PluginRender> GetRender(std::string &id);
+    void Export(napi_env env, napi_value exports);
+    void DeletePluginRender(const std::string& id);
+
+private:
+    static void RegisterLifecycle(napi_env env, napi_value exports, int64_t value);
+
+private:
+    static PluginManager m_pluginManager;
+
+    std::unordered_map<std::string, std::shared_ptr<PluginRender>> m_pluginRenderMap;
+};
+#endif // VAP_PLUGIN_MANAGER_H
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/render/anim_config.h b/ohos/vap/vap_module/src/main/cpp/include/render/anim_config.h
new file mode 100644
index 00000000..5069d5f5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/render/anim_config.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_CONFIG_H
+#define VAP_CONFIG_H
+
+#include <cstdint>
+#include <nlohmann/json.hpp>
+#include <stdint.h>
+#include "frame.h"
+#include "src.h"
+#include "vertex_util.h"
+
+#include <stdint.h>
+#include "vertex_util.h"
+
+using json = nlohmann::json;
+
+enum Orien {
+    ORIEN_DEFAULT = 0,  // 兼容模式
+    ORIEN_PORTRAIT, // 适配竖屏的视频
+    ORIEN_LANDSCAPE // 适配横屏的视频
+};
+
+enum VideoMode {
+    // 视频对齐方式 (兼容老版本视频模式)
+    VIDEO_MODE_SPLIT_HORIZONTAL = 1, // 视频左右对齐（alpha左\rgb右）
+    VIDEO_MODE_SPLIT_VERTICAL, // 视频上下对齐（alpha上\rgb下）
+    VIDEO_MODE_SPLIT_HORIZONTAL_REVERSE, // 视频左右对齐（rgb左\alpha右）
+    VIDEO_MODE_SPLIT_VERTICAL_REVERSE // 视频上下对齐（rgb上\alpha下）
+};
+
+struct BoxHead {
+    int32_t length;
+    std::string type;
+};
+
+class AnimConfig {
+public:
+    AnimConfig(bool isH265 = false)
+    {
+        isH265_ = isH265;
+    };
+    ~AnimConfig();
+    bool ParseJson(std::string uri, bool isNeedParseFrame = true);
+    void GetSrc(std::map<std::string, Src> &src);
+    void DefaultConfig(int32_t width, int32_t height);
+
+    int32_t version = 2; // 不同版本号不兼容
+    int32_t totalFrames = 0; // 总帧数
+    int32_t width = 0; // 需要显示视频的真实宽高
+    int32_t height = 0;
+    int32_t videoWidth = 0; // 视频实际宽高
+    int32_t videoHeight = 0;
+    Orien orien = ORIEN_DEFAULT; // 0-兼容模式 1-竖屏 2-横屏
+    int32_t fps = 0;
+    bool isMix = false; // 是否为融合动画
+    PointRect alphaPointRect = PointRect(0, 0, 0, 0); // alpha区域
+    PointRect rgbPointRect = PointRect(0, 0, 0, 0); // rgb区域
+    bool isDefaultConfig = false; // 没有vapc配置时默认逻辑
+    VideoMode defaultVideoMode = VIDEO_MODE_SPLIT_HORIZONTAL;
+    std::shared_ptr<SrcMap> srcMapPtr = nullptr;
+    std::shared_ptr<FrameAll> frameAllPtr = nullptr;
+private:
+	void ParseBoxHead(std::vector<char> &boxHead, BoxHead &head);
+    int GetJson(std::string &jsonStr, std::string &uri);
+    
+    bool isInit = false;
+    bool isH265_ = false;
+};
+
+#endif // VAP_CONFIG_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/render/egl_core.h b/ohos/vap/vap_module/src/main/cpp/include/render/egl_core.h
new file mode 100644
index 00000000..ca1c2d45
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/render/egl_core.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_EGL_CORE_H
+#define VAP_EGL_CORE_H
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES3/gl3.h>
+#include <cstdint>
+#include <memory>
+#include <vector>
+#include "mask_render.h"
+#include "mix_render.h"
+#include "data_info.h"
+#include "yuv_render.h"
+
+struct RenderData {
+    std::vector<uint8_t> data;
+    int32_t stride;
+    int32_t sliceHeight;
+    int32_t frameCurIdx;
+};
+
+class EGLCore {
+public:
+    explicit EGLCore(){};
+    ~EGLCore() {}
+    bool EglContextInit(EGLNativeWindowType window, int width, int height, std::string uri,
+        std::map<std::string, MixInputData> &iptData);
+    
+    void SetFitType(VideoFitType fitType)
+    {
+        m_fitType = fitType;
+    }
+    
+    void SetVideoMode(VideoMode videoMode)
+    {
+        m_defaultVideoMode = videoMode;
+        if (m_animConfig) {
+            m_animConfig->isDefaultConfig = true;
+        }
+    }
+    
+    void SetVideoSize(int32_t width, int32_t height, std::string mime)
+    {
+        m_videoWidth = width;
+        m_videoHeight = height;
+        m_isH265 = mime == MIME_VIDEO_HEVC;
+    }
+    bool CreateEnvironment();
+    void Release();
+    void Render(RenderData &renderData);
+    bool SeparateYUV(const std::vector<uint8_t> &data,
+        int alignWidth, int alignHeight, int videoWidth, int videoHeight);
+    bool FinishLoad();
+    void GetCurrentClickTxt(int32_t eventX, int32_t eventY, std::string &clickRes);
+    
+    void UpdateSize(int width, int height)
+    {
+        LOGD("enter UpdateSize %{public}d * %{public}d ", width, height);
+        m_width = width;
+        m_height = height;
+    }
+    
+    std::shared_ptr<AnimConfig> m_animConfig;
+private:
+    VideoMode m_defaultVideoMode = VIDEO_MODE_SPLIT_HORIZONTAL;
+    EGLConfig ChooseConfig();
+    void GetAttributes(std::vector<int> &array);
+    EGLContext CreateContext(EGLDisplay eglDisplay, EGLConfig eglConfig);
+    void MixRenderFrame(int32_t frameCurIdx);
+    void InitFitConfig();
+    void FitCenter();
+    void CenterCrop();
+    void FitXY();
+
+private:
+    EGLNativeWindowType m_eglWindow;
+    EGLDisplay m_eglDisplay = EGL_NO_DISPLAY;
+    EGLConfig m_eglConfig = EGL_NO_CONFIG_KHR;
+    EGLSurface m_eglSurface = EGL_NO_SURFACE;
+    EGLContext m_eglContext = EGL_NO_CONTEXT;
+    GLuint m_program;
+    bool m_flag = false;
+    int m_width;
+    int m_height;
+    GLfloat m_widthPercent;
+    unsigned char *buf[3] = {0};
+    std::unique_ptr<class YuvRender> m_render = nullptr;
+    std::unique_ptr<class MixRender> m_mixRender = nullptr;
+    std::unique_ptr<MaskRender> m_maskRender = nullptr;
+    
+    int32_t m_frameCurIdx;
+    VideoFitType m_fitType = VideoFitType::FIT_XY;
+    int32_t m_viewportWidth = 0;
+    int32_t m_viewportHeight = 0;
+    int32_t m_viewportX = 0;
+    int32_t m_viewportY = 0;
+    
+    int32_t m_videoWidth = 0;
+    int32_t m_videoHeight = 0;
+    bool m_isH265 = false;
+};
+#endif // VAP_EGL_CORE_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/render/plugin_render.h b/ohos/vap/vap_module/src/main/cpp/include/render/plugin_render.h
new file mode 100644
index 00000000..d691a242
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/render/plugin_render.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_PLUGIN_RENDER_H
+#define VAP_PLUGIN_RENDER_H
+
+#include <string>
+#include <unordered_map>
+#include <ace/xcomponent/native_interface_xcomponent.h>
+#include <napi/native_api.h>
+
+#include "egl_core.h"
+#include "napi/n_func_arg.h"
+#include "player.h"
+
+const std::string PROP_TAG = "tag";
+const std::string PROP_TXT = "txt";
+const std::string PROP_IMAGE = "imgUri";
+const std::string PROP_COLOR = "color";
+const std::string PROP_FONT_WEIGHT = "fontWeight";
+const std::string PROP_TEXT_ALIGN = "textAlign";
+
+class PluginRender {
+public:
+    explicit PluginRender(std::string &id);
+    ~PluginRender()
+    {
+        if (player_) {
+            player_->StartRelease();
+        }
+        m_instance.clear();
+    }
+    static std::shared_ptr<PluginRender> GetInstance(std::string &id, bool onlyFind = true);
+    static void Release(std::string &id);
+    static std::string GetXComponentId(napi_env env, napi_callback_info info);
+    
+    static napi_value Play(napi_env env, napi_callback_info info);
+    static napi_value On(napi_env env, napi_callback_info info);
+    static napi_value Pause(napi_env env, napi_callback_info info);
+    static napi_value Stop(napi_env env, napi_callback_info info);
+    static napi_value SetLoop(napi_env env, napi_callback_info info);
+    static napi_value SetFitType(napi_env env, napi_callback_info info);
+    static napi_value GetVideoInfo(napi_env env, napi_callback_info info);
+    static napi_value SetVideoMode(napi_env env, napi_callback_info info);
+    static napi_value SetSpeed(napi_env env, napi_callback_info info);
+    static napi_value Off(napi_env env, napi_callback_info info);
+    
+    void Export(napi_env env, napi_value exports);
+
+public:
+    static std::unordered_map<std::string, std::shared_ptr<PluginRender>> m_instance; // 标个点
+    static OH_NativeXComponent_Callback m_callback;
+    void ParseCallback(napi_ref &callbackRef, napi_env env, napi_value val, std::string type);
+    
+    std::string m_id;
+    std::function<void(const std::string&)> deleteRenderCallback_ {nullptr};
+    void *m_window = nullptr;
+    OH_NativeXComponent *m_component = nullptr;
+    uint64_t m_width;
+    uint64_t m_height;
+    std::unique_ptr<Player> player_ = nullptr;
+    
+    napi_env env_ = nullptr;
+    bool surfaceDestroyed_ = false;
+};
+#endif // VAP_PLUGIN_RENDER_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/render/yuv_render.h b/ohos/vap/vap_module/src/main/cpp/include/render/yuv_render.h
new file mode 100644
index 00000000..77997994
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/render/yuv_render.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_RENDER_H
+#define VAP_RENDER_H
+
+#include <GLES3/gl31.h>
+#include <memory>
+#include <vector>
+#include "anim_config.h"
+#include "log.h"
+
+class YuvRender {
+public:
+    YuvRender(std::string uri)
+    {
+        InitRender(uri);
+    }
+    void InitRender(std::string uri);
+    void SetYUVData(int32_t width, int32_t height, const std::vector<unsigned char> &y,
+        const std::vector<unsigned char> &u, const std::vector<unsigned char> &v);
+    void Draw();
+    void SetAnimConfig(std::shared_ptr<AnimConfig> animConfig);
+    void RenderFrame();
+    void ClearFrame();
+    void ReleaseTexture();
+    GLuint GetExternalTexture();
+
+    VertexUtil vertex_;
+    VertexUtil alpha_;
+    VertexUtil rgb_;
+    
+    int widthYUV_ = 0;
+    int heightYUV_ = 0;
+    std::vector<unsigned char> y_;
+    std::vector<unsigned char> u_;
+    std::vector<unsigned char> v_;
+    GLuint shaderProgram_ = 0;
+    GLuint VAO_;
+private:
+    GLint avPosition_ = 0;
+    GLint rgbPosition_ = 0;
+    GLint alphaPosition_ = 0;
+    
+    GLint samplerY_ = 0;
+    GLint samplerU_ = 0;
+    GLint samplerV_ = 0;
+    
+    GLint convertMatrixUniform_ = 0;
+    GLint convertOffsetUniform_ = 0;
+    
+    GLuint textureId_[3];
+    GLint unpackAlign_ = 4;
+    
+    float YUV_OFFSET[3] = {
+        0.0f, -0.501960814f, -0.501960814f
+    };
+    
+    float YUV_MATRIX[9] = {
+        1.0f, 1.0f, 1.0f,
+        0.0f, -0.3441f, 1.772f,
+        1.402f, -0.7141f, 0.0f
+    };
+};
+
+#endif // VAP_RENDER_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/resource_request.h b/ohos/vap/vap_module/src/main/cpp/include/resource_request.h
new file mode 100644
index 00000000..1129fdd4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/resource_request.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_RESOURCE_REQUEST_H
+#define VAP_RESOURCE_REQUEST_H
+
+#include <bits/alltypes.h>
+#include <multimedia/image_framework/image/image_source_native.h>
+#include <native_drawing/drawing_text_typography.h>
+#include <native_drawing/drawing_types.h>
+#include <vector>
+
+#include "src.h"
+
+struct ColorARGB {
+    uint32_t alpha = 0xff;
+    uint32_t red = 0xff;
+    uint32_t green = 0xf1;
+    uint32_t blue = 0xae;
+};
+
+struct TextOption {
+    const char *text;
+    int32_t height;
+    int32_t width;
+    
+    ColorARGB color;
+    OH_Drawing_TextAlign textAlign;
+    OH_Drawing_FontWeight fontWeight;
+};
+struct ImageOption {
+    const char *uri;
+    int32_t height;
+    int32_t width;
+    FitType fixType;
+};
+class ResourceRequest {
+public:
+    ResourceRequest() = default;
+    ~ResourceRequest() { Release();};
+    void Create();
+    void DrawText(TextOption &txtOpt);
+    void SetWidth(uint64_t width = 300);
+    void SetHeight(uint64_t height = 50);
+    void GetData(std::vector<uint8_t> &data);
+    void Release();
+    
+    void FetchText(std::vector<uint8_t> &data, TextOption &txtOpt);
+    void FetchImg(std::vector<uint8_t> &data, ImageOption &imgOpt);
+private:
+    uint64_t width_ = 300;
+    uint64_t height_ = 50;
+
+    OH_Drawing_Bitmap *cBitmap_ = nullptr;
+    OH_Drawing_Canvas *cCanvas_ = nullptr;
+
+    OH_ImageSourceNative *source_ = nullptr;
+    OH_PixelmapNative *resPixMap_ = nullptr;
+
+    static constexpr double DEFAULT_FONT_SIZE = 31.0;
+};
+#endif // VAP_RESOURCE_REQUEST_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.cirrus.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.cirrus.yml
new file mode 100644
index 00000000..be633150
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.cirrus.yml
@@ -0,0 +1,17 @@
+arm_container:
+  image: gcc:latest
+
+check_task:
+  check_script:
+  - wget https://github.com/Kitware/CMake/releases/download/v3.20.2/cmake-3.20.2.tar.gz
+  - tar xfz cmake-3.20.2.tar.gz
+  - cd cmake-3.20.2
+  - ./configure
+  - make cmake ctest -j4
+  - cd ..
+  - mkdir build
+  - cd build
+  - ../cmake-3.20.2/bin/cmake .. -DJSON_FastTests=ON
+  - make -j4
+  - cd tests
+  - ../../cmake-3.20.2/bin/ctest -j4
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.clang-format b/ohos/vap/vap_module/src/main/cpp/include/util/json/.clang-format
new file mode 100644
index 00000000..5b9e3fd5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.clang-format
@@ -0,0 +1,84 @@
+#AccessModifierOffset: 2
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+#AlignConsecutiveBitFields: false
+AlignConsecutiveDeclarations: false
+AlignConsecutiveMacros: false
+AlignEscapedNewlines: Right
+#AlignOperands: AlignAfterOperator
+AlignTrailingComments: true
+AllowAllArgumentsOnNextLine: false
+AllowAllConstructorInitializersOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: Empty
+AllowShortCaseLabelsOnASingleLine: false
+#AllowShortEnumsOnASingleLine: true
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLambdasOnASingleLine: Empty
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: Yes
+BinPackArguments: false
+BinPackParameters: false
+#BitFieldColonSpacing: Both
+BreakBeforeBraces: Custom # or Allman
+BraceWrapping:
+  AfterCaseLabel: true
+  AfterClass: true
+  AfterControlStatement: Always
+  AfterEnum: true
+  AfterFunction: true
+  AfterNamespace: false
+  AfterStruct: true
+  AfterUnion: true
+  AfterExternBlock: false
+  BeforeCatch: true
+  BeforeElse: true
+  #BeforeLambdaBody: false
+  #BeforeWhile: false
+  SplitEmptyFunction: false
+  SplitEmptyRecord: false
+  SplitEmptyNamespace: false
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeComma
+BreakStringLiterals: false
+ColumnLimit: 0
+CompactNamespaces: false
+ConstructorInitializerIndentWidth: 2
+Cpp11BracedListStyle: true
+PointerAlignment: Left
+FixNamespaceComments: true
+IncludeBlocks: Preserve
+#IndentCaseBlocks: false
+IndentCaseLabels: true
+IndentGotoLabels: false
+IndentPPDirectives: BeforeHash
+IndentWidth: 4
+KeepEmptyLinesAtTheStartOfBlocks: false
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ReflowComments: false
+SortIncludes: true
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceBeforeSquareBrackets: false
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 2
+SpacesInAngles: false
+SpacesInCStyleCastParentheses: false
+SpacesInConditionalStatement: false
+SpacesInContainerLiterals: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard: c++11
+TabWidth: 4
+UseTab: Never
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.clang-tidy b/ohos/vap/vap_module/src/main/cpp/include/util/json/.clang-tidy
new file mode 100644
index 00000000..9591b0ec
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.clang-tidy
@@ -0,0 +1,77 @@
+# TODO: The first three checks are only removed to get the CI going. They have to be addressed at some point.
+
+Checks: '*,
+
+         -portability-template-virtual-member-function,
+         -bugprone-use-after-move,
+         -hicpp-invalid-access-moved,
+
+         -altera-id-dependent-backward-branch,
+         -altera-struct-pack-align,
+         -altera-unroll-loops,
+         -android-cloexec-fopen,
+         -boost-use-ranges,
+         -bugprone-easily-swappable-parameters,
+         -cert-err58-cpp,
+         -concurrency-mt-unsafe,
+         -cppcoreguidelines-avoid-const-or-ref-data-members,
+         -cppcoreguidelines-avoid-do-while,
+         -cppcoreguidelines-avoid-goto,
+         -cppcoreguidelines-avoid-magic-numbers,
+         -cppcoreguidelines-avoid-non-const-global-variables,
+         -cppcoreguidelines-macro-usage,
+         -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+         -cppcoreguidelines-pro-bounds-constant-array-index,
+         -cppcoreguidelines-pro-bounds-pointer-arithmetic,
+         -cppcoreguidelines-pro-type-reinterpret-cast,
+         -cppcoreguidelines-pro-type-union-access,
+         -cppcoreguidelines-rvalue-reference-param-not-moved,
+         -cppcoreguidelines-virtual-class-destructor,
+         -fuchsia-default-arguments-calls,
+         -fuchsia-default-arguments-declarations,
+         -fuchsia-overloaded-operator,
+         -google-explicit-constructor,
+         -google-readability-function-size,
+         -google-runtime-int,
+         -google-runtime-references,
+         -hicpp-avoid-goto,
+         -hicpp-explicit-conversions,
+         -hicpp-function-size,
+         -hicpp-no-array-decay,
+         -hicpp-no-assembler,
+         -hicpp-signed-bitwise,
+         -hicpp-uppercase-literal-suffix,
+         -llvm-header-guard,
+         -llvm-include-order,
+         -llvmlibc-*,
+         -misc-use-anonymous-namespace,
+         -misc-confusable-identifiers,
+         -misc-include-cleaner,
+         -misc-no-recursion,
+         -misc-non-private-member-variables-in-classes,
+         -modernize-concat-nested-namespaces,
+         -modernize-type-traits,
+         -modernize-use-constraints,
+         -modernize-use-designated-initializers,
+         -modernize-use-integer-sign-comparison,
+         -modernize-use-nodiscard,
+         -modernize-use-ranges,
+         -modernize-use-std-numbers,
+         -modernize-use-trailing-return-type,
+         -performance-enum-size,
+         -readability-function-cognitive-complexity,
+         -readability-function-size,
+         -readability-identifier-length,
+         -readability-magic-numbers,
+         -readability-redundant-access-specifiers,
+         -readability-simplify-boolean-expr,
+         -readability-uppercase-literal-suffix'
+
+CheckOptions:
+  - key: hicpp-special-member-functions.AllowSoleDefaultDtor
+    value: 1
+
+WarningsAsErrors: '*'
+
+#HeaderFilterRegex: '.*nlohmann.*'
+HeaderFilterRegex: '.*hpp$'
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CODEOWNERS b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CODEOWNERS
new file mode 100644
index 00000000..e1e1040f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CODEOWNERS
@@ -0,0 +1,6 @@
+# JSON for Modern C++ was originally written by Niels Lohmann.
+# Since 2013, over 250 contributors have helped to improve the library.
+# This CODEOWNERS file is only to make sure that @nlohmann is requested
+# for a code review in case of a pull request.
+
+* @nlohmann
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CODE_OF_CONDUCT.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CODE_OF_CONDUCT.md
new file mode 100644
index 00000000..770b8173
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CODE_OF_CONDUCT.md
@@ -0,0 +1,46 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at mail@nlohmann.me. The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CONTRIBUTING.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CONTRIBUTING.md
new file mode 100644
index 00000000..87b13df3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/CONTRIBUTING.md
@@ -0,0 +1,69 @@
+# How to contribute
+
+This project started as a little excuse to exercise some of the cool new C++11 features. Over time, people actually started to use the JSON library (yey!) and started to help improve it by proposing features, finding bugs, or even fixing my mistakes. I am really [thankful](https://github.com/nlohmann/json/blob/master/README.md#thanks) for this and try to keep track of all the helpers.
+
+To make it as easy as possible for you to contribute and for me to keep an overview, here are a few guidelines which should help us avoid all kinds of unnecessary work or disappointment. And of course, this document is subject to discussion, so please [create an issue](https://github.com/nlohmann/json/issues/new/choose) or a pull request if you find a way to improve it!
+
+## Private reports
+
+Usually, all issues are tracked publicly on [GitHub](https://github.com/nlohmann/json/issues). If you want to make a private report (e.g., for a vulnerability or to attach an example that is not meant to be published), please send an email to <mail@nlohmann.me>.
+
+## Prerequisites
+
+Please [create an issue](https://github.com/nlohmann/json/issues/new/choose), assuming one does not already exist, and describe your concern. Note you need a [GitHub account](https://github.com/signup/free) for this.
+
+## Describe your issue
+
+Clearly describe the issue:
+
+- If it is a bug, please describe how to **reproduce** it. If possible, attach a complete example which demonstrates the error. Please also state what you **expected** to happen instead of the error.
+- If you propose a change or addition, try to give an **example** how the improved code could look like or how to use it.
+- If you found a compilation error, please tell us which **compiler** (version and operating system) you used and paste the (relevant part of) the error messages to the ticket.
+
+Please stick to the provided issue template ([bug report](https://github.com/nlohmann/json/blob/develop/.github/ISSUE_TEMPLATE/bug.yaml) if possible. For questions, feature or support requests, please [open a discussion](https://github.com/nlohmann/json/discussions/new).
+
+## Files to change
+
+:exclamation: Before you make any changes, note the single-header files [`single_include/nlohmann/json.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json.hpp) and [`single_include/nlohmann/json_fwd.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json_fwd.hpp) are **generated** from the source files in the [`include/nlohmann` directory](https://github.com/nlohmann/json/tree/develop/include/nlohmann). Please **do not** edit the files `single_include/nlohmann/json.hpp` and `single_include/nlohmann/json_fwd.hpp` directly, but change the `include/nlohmann` sources and regenerate the files by executing `make amalgamate`.
+
+To make changes, you need to edit the following files:
+
+1. [`include/nlohmann/*`](https://github.com/nlohmann/json/tree/develop/include/nlohmann) - These files are the sources of the library. Before testing or creating a pull request, execute `make amalgamate` to regenerate `single_include/nlohmann/json.hpp` and `single_include/nlohmann/json_fwd.hpp`.
+
+2. [`tests/src/unit-*.cpp`](https://github.com/nlohmann/json/tree/develop/tests/src) - These files contain the [doctest](https://github.com/onqtam/doctest) unit tests which currently cover [100 %](https://coveralls.io/github/nlohmann/json) of the library's code.  Before creating a pull request, execute `make pretty` to make sure that the style is correct, as this will be checked by the CI. 
+
+   If you add or change a feature, please also add a unit test to this file. The unit tests can be compiled and executed with
+
+   ```sh
+   $ mkdir build
+   $ cd build
+   $ cmake ..
+   $ cmake --build .
+   $ ctest
+   ```
+
+   The test cases are also executed with several different compilers on [Travis](https://travis-ci.org/nlohmann/json) once you open a pull request.
+
+
+## Note
+
+- If you open a pull request, the code will be automatically tested with [Valgrind](http://valgrind.org)'s Memcheck tool to detect memory leaks. Please be aware that the execution with Valgrind _may_ in rare cases yield different behavior than running the code directly. This can result in failing unit tests which run successfully without Valgrind.
+- There is a Makefile target `make pretty` which runs [Artistic Style](http://astyle.sourceforge.net) to fix indentation. If possible, run it before opening the pull request. Otherwise, we shall run it afterward.
+
+## Please don't
+
+- The C++11 support varies between different **compilers** and versions. Please note the [list of supported compilers](https://github.com/nlohmann/json/blob/master/README.md#supported-compilers). Some compilers like GCC 4.7 (and earlier), Clang 3.3 (and earlier), or Microsoft Visual Studio 13.0 and earlier are known not to work due to missing or incomplete C++11 support. Please refrain from proposing changes that work around these compiler's limitations with `#ifdef`s or other means.
+- Specifically, I am aware of compilation problems with **Microsoft Visual Studio** (there even is an [issue label](https://github.com/nlohmann/json/issues?utf8=✓&q=label%3A%22visual+studio%22+) for this kind of bug). I understand that even in 2016, complete C++11 support isn't there yet. But please also understand that I do not want to drop features or uglify the code just to make Microsoft's sub-standard compiler happy. The past has shown that there are ways to express the functionality such that the code compiles with the most recent MSVC - unfortunately, this is not the main objective of the project.
+- Please refrain from proposing changes that would **break [JSON](https://json.org) conformance**. If you propose a conformant extension of JSON to be supported by the library, please motivate this extension.
+  - We shall not extend the library to **support comments**. There is quite some [controversy](https://www.reddit.com/r/programming/comments/4v6chu/why_json_doesnt_support_comments_douglas_crockford/) around this topic, and there were quite some [issues](https://github.com/nlohmann/json/issues/376) on this. We believe that JSON is fine without comments.
+  - We do not preserve the **insertion order of object elements**. The [JSON standard](https://tools.ietf.org/html/rfc8259.html) defines objects as "an unordered collection of zero or more name/value pairs". To this end, this library does not preserve insertion order of name/value pairs. (In fact, keys will be traversed in alphabetical order as `std::map` with `std::less` is used by default.) Note this behavior conforms to the standard, and we shall not change it to any other order. If you do want to preserve the insertion order, you can specialize the object type with containers like [`tsl::ordered_map`](https://github.com/Tessil/ordered-map) or [`nlohmann::fifo_map`](https://github.com/nlohmann/fifo_map).
+
+- Please do not open pull requests that address **multiple issues**.
+
+## Wanted
+
+The following areas really need contribution:
+
+- Extending the **continuous integration** toward more exotic compilers such as Android NDK, Intel's Compiler, or the bleeding-edge versions Clang.
+- Improving the efficiency of the **JSON parser**. The current parser is implemented as a naive recursive descent parser with hand coded string handling. More sophisticated approaches like LALR parsers would be really appreciated. That said, parser generators like Bison or ANTLR do not play nice with single-header files -- I really would like to keep the parser inside the `json.hpp` header, and I am not aware of approaches similar to [`re2c`](http://re2c.org) for parsing.
+- Extending and updating existing **benchmarks** to include (the most recent version of) this library. Though efficiency is not everything, speed and memory consumption are very important characteristics for C++ developers, so having proper comparisons would be interesting.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/FUNDING.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/FUNDING.yml
new file mode 100644
index 00000000..a6c972e8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/FUNDING.yml
@@ -0,0 +1,2 @@
+github: nlohmann
+custom: http://paypal.me/nlohmann
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/ISSUE_TEMPLATE/bug.yaml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/ISSUE_TEMPLATE/bug.yaml
new file mode 100644
index 00000000..f7acdf18
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/ISSUE_TEMPLATE/bug.yaml
@@ -0,0 +1,93 @@
+name: Bug Report
+description: Create a bug report
+labels:
+  - 'kind: bug'
+body:
+  - type: markdown
+    attributes:
+      value: >
+        Thanks for taking the time to fill out this bug report!
+        
+        Make sure you give it a short and specific **title** so that the report
+        is searchable and uniquely identifiable.
+        
+        Note that this form is for bug reports only. Please
+        [open a discussion](https://github.com/nlohmann/json/discussions/new)
+        for questions, feature requests, or support requests
+  - type: textarea
+    id: summary
+    attributes:
+      label: Description
+      description: >
+        Please provide an abstract description of the issue to the developers,
+        and why you consider it to be a bug. Please include any specific links
+        to the documentation, JSON specification, or code.
+    validations:
+      required: true
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: Reproduction steps
+      description: >
+        How do you trigger the bug? Please walk us through step by step. Be as
+        specific as possible.
+    validations:
+      required: true
+  - type: textarea
+    id: results
+    attributes:
+      label: Expected vs. actual results
+      description: >
+        Please describe what you expected to happen after the steps above and
+        what actually happened.
+    validations:
+      required: true
+  - type: textarea
+    id: code
+    attributes:
+      label: Minimal code example
+      description: >
+        If possible, provide a small and self-contained example that triggers
+        the bug. Please understand that we cannot analyze and debug large code
+        bases. Please do not paste screenshots here.
+      render: Shell
+  - type: textarea
+    id: output
+    attributes:
+      label: Error messages
+      description: >
+        Please provide any kind of error output (compilation errors, exception
+        messages, stack traces, etc.) which can help to diagnose the error.
+      render: Shell
+  - type: input
+    id: compiler
+    attributes:
+      label: Compiler and operating system
+      description: >
+        On which operating systems and compilers have you observed the issue?
+        Include as many relevant details about the environment you experienced
+        the bug in. Make sure you use a
+        [supported compiler](https://github.com/nlohmann/json#supported-compilers).
+    validations:
+      required: true
+  - type: input
+    id: version
+    attributes:
+      label: Library version
+      description: >
+        Which version of the library did you use? If it is a released version,
+        please enter the version number (e.g., 3.11.3). Otherwise, please enter
+        the commit hash. If you got the library from another source as the
+        GitHub repository (e.g., via a package manager), please also state
+        this.
+    validations:
+      required: true
+  - type: checkboxes
+    id: validation
+    attributes:
+      label: Validation
+      description: >
+        Please check these additional steps:
+      options:
+        - label: The bug also occurs if the latest version from the [`develop`](https://github.com/nlohmann/json/tree/develop) branch is used.
+        - label: I can successfully [compile and run the unit tests](https://github.com/nlohmann/json#execute-unit-tests).
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/ISSUE_TEMPLATE/config.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/ISSUE_TEMPLATE/config.yml
new file mode 100644
index 00000000..0e966338
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/ISSUE_TEMPLATE/config.yml
@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Ask a question
+    url: https://github.com/nlohmann/json/discussions
+    about: Ask questions and discuss with other community members
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/PULL_REQUEST_TEMPLATE.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 00000000..c9c7cb79
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,19 @@
+[Describe your pull request here. Please read the text below the line, and make sure you follow the checklist.]
+
+* * *
+
+## Pull request checklist
+
+Read the [Contribution Guidelines](https://github.com/nlohmann/json/blob/develop/.github/CONTRIBUTING.md) for detailed information.
+
+- [ ]  Changes are described in the pull request, or an [existing issue is referenced](https://github.com/nlohmann/json/issues).
+- [ ]  The test suite [compiles and runs](https://github.com/nlohmann/json/blob/develop/README.md#execute-unit-tests) without error.
+- [ ]  [Code coverage](https://coveralls.io/github/nlohmann/json) is 100%. Test cases can be added by editing the [test suite](https://github.com/nlohmann/json/tree/develop/test/src).
+- [ ]  The source code is amalgamated; that is, after making changes to the sources in the `include/nlohmann` directory, run `make amalgamate` to create the single-header files `single_include/nlohmann/json.hpp` and `single_include/nlohmann/json_fwd.hpp`. The whole process is described [here](https://github.com/nlohmann/json/blob/develop/.github/CONTRIBUTING.md#files-to-change).
+
+## Please don't
+
+- The C++11 support varies between different **compilers** and versions. Please note the [list of supported compilers](https://github.com/nlohmann/json/blob/master/README.md#supported-compilers). Some compilers like GCC 4.7 (and earlier), Clang 3.3 (and earlier), or Microsoft Visual Studio 13.0 and earlier are known not to work due to missing or incomplete C++11 support. Please refrain from proposing changes that work around these compiler's limitations with `#ifdef`s or other means.
+- Specifically, I am aware of compilation problems with **Microsoft Visual Studio** (there even is an [issue label](https://github.com/nlohmann/json/issues?utf8=✓&q=label%3A%22visual+studio%22+) for this kind of bug). I understand that even in 2016, complete C++11 support isn't there yet. But please also understand that I do not want to drop features or uglify the code just to make Microsoft's sub-standard compiler happy. The past has shown that there are ways to express the functionality such that the code compiles with the most recent MSVC - unfortunately, this is not the main objective of the project.
+- Please refrain from proposing changes that would **break [JSON](https://json.org) conformance**. If you propose a conformant extension of JSON to be supported by the library, please motivate this extension.
+- Please do not open pull requests that address **multiple issues**.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/SECURITY.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/SECURITY.md
new file mode 100644
index 00000000..4d010ebd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/SECURITY.md
@@ -0,0 +1,5 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+Usually, all issues are tracked publicly on [GitHub](https://github.com/nlohmann/json/issues). If you want to make a private report (e.g., for a vulnerability or to attach an example that is not meant to be published), please send an email to <mail@nlohmann.me>. You can use [this key](https://keybase.io/nlohmann/pgp_keys.asc?fingerprint=797167ae41c0a6d9232e48457f3cea63ae251b69) for encryption.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/config.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/config.yml
new file mode 100644
index 00000000..7a8f41e6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/config.yml
@@ -0,0 +1,19 @@
+# Configuration for sentiment-bot - https://github.com/behaviorbot/sentiment-bot
+
+# *Required* toxicity threshold between 0 and .99 with the higher numbers being the most toxic
+# Anything higher than this threshold will be marked as toxic and commented on
+sentimentBotToxicityThreshold: .7
+
+# *Required* Comment to reply with
+sentimentBotReplyComment: >
+  Please be sure to review the [code of conduct](https://github.com/nlohmann/json/blob/develop/CODE_OF_CONDUCT.md) and be respectful of other users. cc/ @nlohmann
+
+
+# Configuration for request-info - https://github.com/behaviorbot/request-info
+
+# *Required* Comment to reply with
+requestInfoReplyComment: >
+  We would appreciate it if you could provide us with more info about this issue or pull request! Please check the [issue template](https://github.com/nlohmann/json/blob/develop/.github/ISSUE_TEMPLATE.md) and the [pull request template](https://github.com/nlohmann/json/blob/develop/.github/PULL_REQUEST_TEMPLATE.md).
+
+# *OPTIONAL* Label to be added to Issues and Pull Requests with insufficient information given
+requestInfoLabelToAdd: "state: needs more info"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/dependabot.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/dependabot.yml
new file mode 100644
index 00000000..6cf0fa74
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/dependabot.yml
@@ -0,0 +1,21 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: daily
+
+  - package-ecosystem: pip
+    directory: /docs/mkdocs
+    schedule:
+      interval: daily
+
+  - package-ecosystem: pip
+    directory: /tools/serve_header
+    schedule:
+      interval: daily
+
+  - package-ecosystem: pip
+    directory: /cmake/requirements
+    schedule:
+      interval: daily
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/external_ci/appveyor.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/external_ci/appveyor.yml
new file mode 100644
index 00000000..126ed99b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/external_ci/appveyor.yml
@@ -0,0 +1,91 @@
+version: '{build}'
+
+# only build PRs and commits to develop branch
+# (see https://help.appveyor.com/discussions/questions/55079-two-builds-per-commit-to-pull-request)
+branches:
+  only:
+    - develop
+
+only_commits:
+  files:
+    - .github/external_ci/appveyor.yml
+    - cmake/
+    - include/
+    - tests/
+    - CMakeLists.txt
+
+environment:
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      configuration: Debug
+      platform: x86
+      CXX_FLAGS: "/W4 /WX"
+      CMAKE_OPTIONS: ""
+      GENERATOR: Visual Studio 14 2015
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      configuration: Release
+      platform: x86
+      CXX_FLAGS: "/W4 /WX"
+      CMAKE_OPTIONS: ""
+      GENERATOR: Visual Studio 14 2015
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      configuration: Release
+      platform: x86
+      name: with_win_header
+      CXX_FLAGS: "/W4 /WX"
+      CMAKE_OPTIONS: ""
+      GENERATOR: Visual Studio 14 2015
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      configuration: Release
+      platform: x86
+      CXX_FLAGS: "/permissive- /std:c++latest /utf-8 /W4 /WX"
+      CMAKE_OPTIONS: ""
+      GENERATOR: Visual Studio 15 2017
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      configuration: Release
+      platform: x86
+      CXX_FLAGS: "/W4 /WX"
+      CMAKE_OPTIONS: "-DJSON_ImplicitConversions=OFF"
+      GENERATOR: Visual Studio 16 2019
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      configuration: Release
+      platform: x64
+      CXX_FLAGS: "/W4 /WX"
+      CMAKE_OPTIONS: ""
+      GENERATOR: Visual Studio 14 2015
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      configuration: Release
+      platform: x64
+      CXX_FLAGS: "/permissive- /std:c++latest /Zc:__cplusplus /utf-8 /W4 /WX"
+      CMAKE_OPTIONS: ""
+      GENERATOR: Visual Studio 15 2017
+
+init:
+  - cmake --version
+  - msbuild /version
+
+install:
+  - if "%platform%"=="x86"    set GENERATOR_PLATFORM=Win32
+
+before_build:
+  # for with_win_header build, inject the inclusion of Windows.h to the single-header library
+  - ps: if ($env:name -Eq "with_win_header") { $header_path = "single_include\nlohmann\json.hpp" }
+  - ps: if ($env:name -Eq "with_win_header") { "#include <Windows.h>`n" + (Get-Content $header_path | Out-String) | Set-Content $header_path }
+  - cmake . -G "%GENERATOR%" -A "%GENERATOR_PLATFORM%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin" -DJSON_BuildTests=On "%CMAKE_OPTIONS%"
+
+build_script:
+  - cmake --build . --config "%configuration%" --parallel 2
+
+test_script:
+  - if "%configuration%"=="Release" ctest -C "%configuration%" --parallel 2 --output-on-failure
+  # On Debug builds, skip test-unicode_all
+  # as it is extremely slow to run and cause
+  # occasional timeouts on AppVeyor.
+  # More info: https://github.com/nlohmann/json/pull/1570
+  - if "%configuration%"=="Debug" ctest --exclude-regex "test-unicode" -C "%configuration%" --parallel 2 --output-on-failure
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/labeler.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/labeler.yml
new file mode 100644
index 00000000..024d3e6d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/labeler.yml
@@ -0,0 +1,38 @@
+version: 1
+
+labels:
+- label: "documentation"
+  files:
+    - "README.md"
+
+- label: "documentation"
+  files:
+    - "docs/.*"
+
+- label: "tests"
+  files:
+    - "tests/.*"
+
+- label: "CMake"
+  files:
+    - ".*CMakeLists.txt"
+
+- label: "CMake"
+  files:
+    - "cmake/.*"
+
+- label: "CI"
+  files:
+    - "github/workflows/.*"
+
+- label: "CI"
+  files:
+    - "github/external_ci/.*"
+
+- label: "S"
+  size-below: 10
+- label: "M"
+  size-above: 9
+  size-below: 100
+- label: "L"
+  size-above: 100
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/stale.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/stale.yml
new file mode 100644
index 00000000..d30c78be
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/stale.yml
@@ -0,0 +1,17 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 30
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 7
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - pinned
+  - security
+# Label to use when marking an issue as stale
+staleLabel: "state: stale"
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/check_amalgamation.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/check_amalgamation.yml
new file mode 100644
index 00000000..4946be8d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/check_amalgamation.yml
@@ -0,0 +1,81 @@
+name: "Check amalgamation"
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  save:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - name: Save PR number
+        run: |
+          mkdir -p ./pr
+          echo ${{ github.event.number }} > ./pr/number
+          echo ${{ github.event.pull_request.user.login }} > ./pr/author
+      - uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
+        with:
+          name: pr
+          path: pr/
+
+  check:
+    runs-on: ubuntu-latest
+    env:
+      MAIN_DIR: ${{ github.workspace }}/main
+      INCLUDE_DIR: ${{ github.workspace }}/main/single_include/nlohmann
+      TOOL_DIR: ${{ github.workspace }}/tools/tools/amalgamate
+      ASTYLE_FLAGS: >
+        --style=allman --indent=spaces=4 --indent-modifiers --indent-switches --indent-preproc-block
+        --indent-preproc-define --indent-col1-comments --pad-oper --pad-header --align-pointer=type
+        --align-reference=type --add-brackets --convert-tabs --close-templates --lineend=linux --preserve-date
+        --formatted
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - name: Checkout pull request
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          path: main
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Checkout tools
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          path: tools
+          ref: develop
+
+      - name: Install astyle
+        run: |
+          sudo apt-get update
+          sudo apt-get install astyle
+
+      - name: Check amalgamation
+        run: |
+          cd $MAIN_DIR
+
+          rm -fr $INCLUDE_DIR/json.hpp~ $INCLUDE_DIR/json_fwd.hpp~
+          cp $INCLUDE_DIR/json.hpp $INCLUDE_DIR/json.hpp~
+          cp $INCLUDE_DIR/json_fwd.hpp $INCLUDE_DIR/json_fwd.hpp~
+
+          python3 $TOOL_DIR/amalgamate.py -c $TOOL_DIR/config_json.json -s .
+          python3 $TOOL_DIR/amalgamate.py -c $TOOL_DIR/config_json_fwd.json -s .
+          echo "Format (1)"
+          astyle $ASTYLE_FLAGS --suffix=none --quiet $INCLUDE_DIR/json.hpp $INCLUDE_DIR/json_fwd.hpp
+
+          diff $INCLUDE_DIR/json.hpp~ $INCLUDE_DIR/json.hpp
+          diff $INCLUDE_DIR/json_fwd.hpp~ $INCLUDE_DIR/json_fwd.hpp
+
+          astyle $ASTYLE_FLAGS $(find docs/examples include tests -type f \( -name '*.hpp' -o -name '*.cpp' -o -name '*.cu' \) -not -path 'tests/thirdparty/*' -not -path 'tests/abi/include/nlohmann/*' | sort)
+          echo Check
+          find $MAIN_DIR -name '*.orig' -exec false {} \+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/cifuzz.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/cifuzz.yml
new file mode 100644
index 00000000..425993f0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/cifuzz.yml
@@ -0,0 +1,35 @@
+name: CIFuzz
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  Fuzzing:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+      with:
+        egress-policy: audit
+
+    - name: Build Fuzzers
+      id: build
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@57fe4475324c5506adbfecdcdd2917f65c86ee9e # master
+      with:
+        oss-fuzz-project-name: 'json'
+        dry-run: false
+        language: c++
+    - name: Run Fuzzers
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@57fe4475324c5506adbfecdcdd2917f65c86ee9e # master
+      with:
+        oss-fuzz-project-name: 'json'
+        fuzz-seconds: 300
+        dry-run: false
+        language: c++
+    - name: Upload Crash
+      uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
+      if: failure() && steps.build.outcome == 'success'
+      with:
+        name: artifacts
+        path: ./out/artifacts
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/codeql-analysis.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/codeql-analysis.yml
new file mode 100644
index 00000000..6af859d6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/codeql-analysis.yml
@@ -0,0 +1,49 @@
+name: "Code scanning - action"
+
+on:
+  push:
+    branches:
+      - develop
+      - master
+      - release/*
+  pull_request:
+  schedule:
+    - cron: '0 19 * * 1'
+  workflow_dispatch:
+  
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  CodeQL-Build:
+
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+
+    steps:
+    - name: Harden Runner
+      uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+      with:
+        egress-policy: audit
+
+    - name: Checkout repository
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@df409f7d9260372bd5f19e5b04e83cb3c43714ae # v3.27.9
+      with:
+        languages: c-cpp
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@df409f7d9260372bd5f19e5b04e83cb3c43714ae # v3.27.9
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@df409f7d9260372bd5f19e5b04e83cb3c43714ae # v3.27.9
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/comment_check_amalgamation.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/comment_check_amalgamation.yml
new file mode 100644
index 00000000..edbece45
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/comment_check_amalgamation.yml
@@ -0,0 +1,81 @@
+name: Comment Check Amalgamation
+on:
+  workflow_run:
+    workflows: ["Check amalgamation"]
+    types:
+      - completed
+
+permissions:
+  contents: read
+
+jobs:
+  comment:
+    if: ${{ github.event.workflow_run.conclusion == 'failure' }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      actions: read
+      issues: read
+      pull-requests: write
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - name: 'Download artifact'
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          script: |
+            var artifacts = await github.rest.actions.listWorkflowRunArtifacts({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               run_id: ${{github.event.workflow_run.id }},
+            });
+            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
+              return artifact.name == "pr"
+            })[0];
+            var download = await github.rest.actions.downloadArtifact({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               artifact_id: matchArtifact.id,
+               archive_format: 'zip',
+            });
+            var fs = require('fs');
+            fs.writeFileSync('${{github.workspace}}/pr.zip', Buffer.from(download.data));
+      - run: unzip pr.zip
+
+      - name: 'Comment on PR'
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            var fs = require('fs');
+            const author = fs.readFileSync('./author')
+            const issue_number = Number(fs.readFileSync('./number'));
+            const opts = github.rest.issues.listForRepo.endpoint.merge({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              creator: author,
+              state: 'all'
+            })
+            let first = true
+            const issues = await github.paginate(opts)
+            for (const issue of issues) {
+              if (issue.number === issue_number) {
+                continue
+              }
+              if (issue.pull_request) {
+                first = false
+                break
+              }
+            }
+            await github.rest.issues.createComment({
+              issue_number: issue_number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: '## 🔴 Amalgamation check failed! 🔴\nThe source code has not been amalgamated.'
+                    + (first ? ' @' + author + ' Please read and follow the [Contribution Guidelines]'
+                               + '(https://github.com/nlohmann/json/blob/develop/.github/CONTRIBUTING.md#files-to-change).'
+                             : '')
+              })
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/dependency-review.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/dependency-review.yml
new file mode 100644
index 00000000..21a469b1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/dependency-review.yml
@@ -0,0 +1,27 @@
+# Dependency Review Action
+#
+# This Action will scan dependency manifest files that change as part of a Pull Request,
+# surfacing known-vulnerable versions of the packages declared or updated in the PR.
+# Once installed, if the workflow run is marked as required,
+# PRs introducing known-vulnerable packages will be blocked from merging.
+#
+# Source repository: https://github.com/actions/dependency-review-action
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - name: 'Checkout Repository'
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@3b139cfc5fae8b618d3eae3675e383bb1769c019 # v4.5.0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/labeler.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/labeler.yml
new file mode 100644
index 00000000..0898980e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/labeler.yml
@@ -0,0 +1,26 @@
+name: "Pull Request Labeler"
+
+on:
+  pull_request_target:
+    types: [opened, synchronize]
+
+permissions:
+  contents: read
+
+jobs:
+  label:
+    permissions:
+      contents: read
+      pull-requests: write
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - uses: srvaroa/labeler@1b3cdb1af3e59155a08b9b2436d0d54feaff49e2 # master
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/macos.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/macos.yml
new file mode 100644
index 00000000..4a22a5ba
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/macos.yml
@@ -0,0 +1,120 @@
+name: macOS
+
+on:
+  push:
+    branches:
+      - develop
+      - master
+      - release/*
+  pull_request:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+# macos-11 is deprecated
+#  macos-11:
+#    runs-on: macos-11
+#    strategy:
+#      matrix:
+#        xcode: ['11.7', '12.4', '12.5.1', '13.0']
+#    env:
+#      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
+#
+#    steps:
+#      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+#      - name: Run CMake
+#        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
+#      - name: Build
+#        run: cmake --build build --parallel 10
+#      - name: Test
+#        run: cd build ; ctest -j 10 --output-on-failure
+
+# macos-12 is deprecated (https://github.com/actions/runner-images/issues/10721)
+#  macos-12:
+#    runs-on: macos-12 # https://github.com/actions/runner-images/blob/main/images/macos/macos-12-Readme.md
+#    strategy:
+#      matrix:
+#        xcode: ['13.1', '13.2.1', '13.3.1', '13.4.1', '14.0', '14.0.1', '14.1']
+#    env:
+#      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
+#
+#    steps:
+#      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+#      - name: Run CMake
+#        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
+#      - name: Build
+#        run: cmake --build build --parallel 10
+#      - name: Test
+#        run: cd build ; ctest -j 10 --output-on-failure
+
+  macos-13:
+    runs-on: macos-13 # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md
+    strategy:
+      matrix:
+        xcode: ['14.1', '14.2', '14.3', '14.3.1', '15.0.1', '15.1', '15.2']
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
+      - name: Build
+        run: cmake --build build --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 --output-on-failure
+
+  macos-14:
+    runs-on: macos-14 # https://github.com/actions/runner-images/blob/main/images/macos/macos-14-Readme.md
+    strategy:
+      matrix:
+        xcode: ['15.3', '15.4']
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
+      - name: Build
+        run: cmake --build build --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 --output-on-failure
+
+  macos-15:
+    runs-on: macos-15 # https://github.com/actions/runner-images/blob/main/images/macos/macos-15-Readme.md
+    strategy:
+      matrix:
+        xcode: ['16.0', '16.1']
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
+      - name: Build
+        run: cmake --build build --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 --output-on-failure
+
+  xcode_standards:
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        standard: [11, 14, 17, 20, 23]
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_TestStandards=${{ matrix.standard }}
+      - name: Build
+        run: cmake --build build --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 --output-on-failure
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/publish_documentation.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/publish_documentation.yml
new file mode 100644
index 00000000..c6b56a53
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/publish_documentation.yml
@@ -0,0 +1,46 @@
+name: Publish documentation
+
+# publish the documentation on every merge to develop branch
+on:
+  push:
+    branches:
+      - develop
+    paths:
+      - docs/mkdocs/**
+      - docs/examples/**
+  workflow_dispatch:
+
+# we don't want to have concurrent jobs, and we don't want to cancel running jobs to avoid broken publications
+concurrency:
+  group: documentation
+  cancel-in-progress: false
+
+permissions:
+  contents: read
+
+jobs:
+  publish_documentation:
+    permissions:
+      contents: write
+
+    if: github.repository == 'nlohmann/json'
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Install virtual environment
+        run: make install_venv -C docs/mkdocs
+
+      - name: Build documentation
+        run: make build -C docs/mkdocs
+
+      - name: Deploy documentation
+        uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4.0.0
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./docs/mkdocs/site
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/scorecards.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/scorecards.yml
new file mode 100644
index 00000000..4a271301
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/scorecards.yml
@@ -0,0 +1,81 @@
+# This workflow uses actions that are not certified by GitHub. They are provided
+# by a third-party and are governed by separate terms of service, privacy
+# policy, and support documentation.
+
+name: Scorecard supply-chain security
+on:
+  # For Branch-Protection check. Only the default branch is supported. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
+  branch_protection_rule:
+  # To guarantee Maintained check is occasionally updated. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
+  schedule:
+    - cron: '20 7 * * 2'
+  push:
+    branches: ["develop"]
+
+permissions:
+  contents: read
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    permissions:
+      # Needed to upload the results to code-scanning dashboard.
+      security-events: write
+      # Needed to publish results and get a badge (see publish_results below).
+      id-token: write
+      contents: read
+      actions: read
+      # To allow GraphQL ListCommits to work
+      issues: read
+      pull-requests: read
+      # To detect SAST tools
+      checks: read
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - name: "Checkout code"
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+      - name: "Run analysis"
+        uses: ossf/scorecard-action@62b2cac7ed8198b15735ed49ab1e5cf35480ba46 # v2.4.0
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          # (Optional) "write" PAT token. Uncomment the `repo_token` line below if:
+          # - you want to enable the Branch-Protection check on a *public* repository, or
+          # - you are installing Scorecards on a *private* repository
+          # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action#authentication-with-pat.
+          # repo_token: ${{ secrets.SCORECARD_TOKEN }}
+
+          # Public repositories:
+          #   - Publish results to OpenSSF REST API for easy access by consumers
+          #   - Allows the repository to include the Scorecard badge.
+          #   - See https://github.com/ossf/scorecard-action#publishing-results.
+          # For private repositories:
+          #   - `publish_results` will always be set to `false`, regardless
+          #     of the value entered here.
+          publish_results: true
+
+      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
+      # format to the repository Actions tab.
+      - name: "Upload artifact"
+        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      # Upload the results to GitHub's code scanning dashboard.
+      - name: "Upload to code-scanning"
+        uses: github/codeql-action/upload-sarif@df409f7d9260372bd5f19e5b04e83cb3c43714ae # v3.27.9
+        with:
+          sarif_file: results.sarif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/ubuntu.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/ubuntu.yml
new file mode 100644
index 00000000..8b4d71a7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/ubuntu.yml
@@ -0,0 +1,283 @@
+name: Ubuntu
+
+on:
+  push:
+    branches:
+      - develop
+      - master
+      - release/*
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  ci_test_clang:
+    runs-on: ubuntu-latest
+    container: silkeh/clang:dev
+    steps:
+      - name: Install git and unzip
+        run: apt-get update ; apt-get install -y git unzip
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_clang
+
+  ci_test_gcc:
+    runs-on: ubuntu-latest
+    container: gcc:latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_gcc
+
+  ci_static_analysis:
+    runs-on: ubuntu-latest
+    container: ghcr.io/nlohmann/json-ci:v2.4.0
+    strategy:
+      matrix:
+        target: [
+          ci_test_valgrind,     # needs Valgrind
+          ci_test_amalgamation, # needs AStyle
+          ci_infer,             # needs Infer
+          ci_single_binaries    # needs iwyu
+        ]
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ${{ matrix.target }}
+
+  ci_test_single_header:
+    runs-on: ubuntu-latest
+    container: gcc:latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_single_header
+
+  ci_static_analysis_ubuntu:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target: [ci_cppcheck, ci_cpplint, ci_reproducible_tests, ci_non_git_tests, ci_offline_testdata, ci_reuse_compliance]
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ${{ matrix.target }}
+
+  ci_static_analysis_clang:
+    runs-on: ubuntu-latest
+    container: silkeh/clang:dev
+    strategy:
+      matrix:
+        target: [ci_clang_tidy, ci_test_clang_sanitizer, ci_clang_analyze]
+    steps:
+      - name: Install git, clang-tools, and unzip
+        run: apt-get update ; apt-get install -y git clang-tools unzip
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ${{ matrix.target }}
+
+  ci_cmake_options:
+    runs-on: ubuntu-latest
+    container: ubuntu:focal
+    strategy:
+      matrix:
+        target: [ci_cmake_flags, ci_test_diagnostics, ci_test_noexceptions, ci_test_noimplicitconversions, ci_test_legacycomparison, ci_test_noglobaludls]
+    steps:
+      - name: Install build-essential
+        run: apt-get update ; apt-get install -y build-essential unzip wget git
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ${{ matrix.target }}
+
+  ci_test_coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Install dependencies and de_DE locale
+        run: |
+          sudo apt-get clean
+          sudo apt-get update
+          sudo apt-get install -y build-essential cmake lcov ninja-build make locales gcc-multilib g++-multilib
+          sudo locale-gen de_DE
+          sudo update-locale
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_coverage
+      - name: Archive coverage report
+        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
+        with:
+          name: code-coverage-report
+          path: ${{ github.workspace }}/build/html
+      - name: Publish report to Coveralls
+        uses: coverallsapp/github-action@cfd0633edbd2411b532b808ba7a8b5e04f76d2c8 # v2.3.4
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: ${{ github.workspace }}/build/json.info.filtered.noexcept
+
+  ci_test_compilers_gcc_old:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        compiler: ['4.8', '4.9', '5', '6']
+    container: ghcr.io/nlohmann/json-ci:v2.4.0
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: CXX=g++-${{ matrix.compiler }} cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_compiler_g++-${{ matrix.compiler }}
+
+  ci_test_compilers_gcc:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # older GCC docker images (4, 5, 6) fail to check out code
+        compiler: ['7', '8', '9', '10', '11', '12', '13', '14', 'latest']
+    container: gcc:${{ matrix.compiler }}
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_compiler_default
+
+  ci_test_compilers_clang:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        compiler: ['3.5', '3.6', '3.7', '3.8', '3.9', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15-bullseye', '16', '17', '18', '19', 'latest']
+    container: silkeh/clang:${{ matrix.compiler }}
+    steps:
+      - name: Install unzip and git
+        run: apt-get update ; apt-get install -y unzip git
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Set env FORCE_STDCPPFS_FLAG for clang 7 / 8 / 9 / 10
+        run: echo "JSON_FORCED_GLOBAL_COMPILE_OPTIONS=-DJSON_HAS_FILESYSTEM=0;-DJSON_HAS_EXPERIMENTAL_FILESYSTEM=0" >> "$GITHUB_ENV"
+        if: ${{ matrix.compiler == '7' || matrix.compiler == '8' || matrix.compiler == '9' || matrix.compiler == '10' }}
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_compiler_default
+
+  ci_test_standards_gcc:
+    runs-on: ubuntu-latest
+    container: gcc:latest
+    strategy:
+      matrix:
+        standard: [11, 14, 17, 20, 23]
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_test_gcc_cxx${{ matrix.standard }}
+
+  ci_test_standards_clang:
+    runs-on: ubuntu-latest
+    container: silkeh/clang:latest
+    strategy:
+      matrix:
+        standard: [11, 14, 17, 20, 23]
+        stdlib: [libcxx, libstdcxx]
+    steps:
+      - name: Install git and unzip
+        run: apt-get update ; apt-get install -y git unzip
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@5979409e62bdf841487c5fb3c053149de97a86d3 # v3.31.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build with libc++
+        run: cmake --build build --target ci_test_clang_libcxx_cxx${{ matrix.standard }}
+        if: ${{ matrix.stdlib == 'libcxx' }}
+      - name: Build with libstdc++
+        run: cmake --build build --target ci_test_clang_cxx${{ matrix.standard }}
+        if: ${{ matrix.stdlib == 'libstdcxx' }}
+
+  ci_cuda_example:
+    runs-on: ubuntu-latest
+    container: ghcr.io/nlohmann/json-ci:v2.4.0
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_cuda_example
+
+  ci_icpc:
+    runs-on: ubuntu-latest
+    container: ghcr.io/nlohmann/json-ci:v2.2.0
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: |
+          . /opt/intel/oneapi/setvars.sh
+          cmake --build build --target ci_icpc
+
+  ci_test_documentation:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target: [ci_test_examples, ci_test_build_documentation]
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f # v2.10.2
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ${{ matrix.target }}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/windows.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/windows.yml
new file mode 100644
index 00000000..4e21d995
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.github/workflows/windows.yml
@@ -0,0 +1,134 @@
+name: Windows
+
+on:
+  push:
+    branches:
+      - develop
+      - master
+      - release/*
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  mingw:
+    runs-on: windows-2019
+    strategy:
+      matrix:
+        architecture: [x64, x86]
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Set up MinGW
+        uses: egor-tensin/setup-mingw@84c781b557efd538dec66bde06988d81cd3138cf # v2.2.0
+        with:
+          platform: ${{ matrix.architecture }}
+          version: 12.2.0 # https://github.com/egor-tensin/setup-mingw/issues/14
+      - name: Run CMake
+        run: cmake -S . -B build -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
+      - name: Build
+        run: cmake --build build --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 -C Debug --output-on-failure
+
+  msvc2019:
+    runs-on: windows-2019
+    strategy:
+      matrix:
+        build_type: [Debug, Release]
+        architecture: [Win32, x64]
+
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+    - name: Run CMake
+      run: cmake -S . -B build -G "Visual Studio 16 2019" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/W4 /WX"
+      if: matrix.build_type == 'Release'
+    - name: Run CMake
+      run: cmake -S . -B build -G "Visual Studio 16 2019" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="/W4 /WX"
+      if: matrix.build_type == 'Debug'
+    - name: Build
+      run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
+    - name: Test
+      run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure
+
+  msvc2019_latest:
+    runs-on: windows-2019
+
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+    - name: Run CMake
+      run: cmake -S . -B build -G "Visual Studio 16 2019" -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/permissive- /std:c++latest /utf-8 /W4 /WX"
+    - name: Build
+      run: cmake --build build --config Release --parallel 10
+    - name: Test
+      run: cd build ; ctest -j 10 -C Release --output-on-failure
+
+  msvc2022:
+    runs-on: windows-2022
+    strategy:
+      matrix:
+        build_type: [Debug, Release]
+        architecture: [Win32, x64]
+
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+    - name: Run CMake
+      run: cmake -S . -B build -G "Visual Studio 17 2022" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/W4 /WX"
+      if: matrix.build_type == 'Release'
+    - name: Run CMake
+      run: cmake -S . -B build -G "Visual Studio 17 2022" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="/W4 /WX"
+      if: matrix.build_type == 'Debug'
+    - name: Build
+      run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
+    - name: Test
+      run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure
+
+  msvc2022_latest:
+    runs-on: windows-2022
+
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+    - name: Run CMake
+      run: cmake -S . -B build -G "Visual Studio 17 2022" -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/permissive- /std:c++latest /utf-8 /W4 /WX"
+    - name: Build
+      run: cmake --build build --config Release --parallel 10
+    - name: Test
+      run: cd build ; ctest -j 10 -C Release --output-on-failure
+
+  clang:
+    runs-on: windows-2019
+    strategy:
+      matrix:
+        version: [11, 12, 13, 14, 15]
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Install Clang
+        run: curl -fsSL -o LLVM${{ matrix.version }}.exe https://github.com/llvm/llvm-project/releases/download/llvmorg-${{ matrix.version }}.0.0/LLVM-${{ matrix.version }}.0.0-win64.exe ; 7z x LLVM${{ matrix.version }}.exe -y -o"C:/Program Files/LLVM"
+      - name: Run CMake
+        run: cmake -S . -B build -DCMAKE_CXX_COMPILER="C:/Program Files/LLVM/bin/clang++.exe" -G"MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
+      - name: Build
+        run: cmake --build build --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 -C Debug --exclude-regex "test-unicode" --output-on-failure
+
+  clang-cl-11:
+    runs-on: windows-2019
+    strategy:
+      matrix:
+        architecture: [Win32, x64]
+
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Run CMake
+        run: cmake -S . -B build -G "Visual Studio 16 2019" -A ${{ matrix.architecture }} -T ClangCL -DJSON_BuildTests=On
+      - name: Build
+        run: cmake --build build --config Debug --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 -C Debug --exclude-regex "test-unicode" --output-on-failure
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.gitignore b/ohos/vap/vap_module/src/main/cpp/include/util/json/.gitignore
new file mode 100644
index 00000000..bfd52b4c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.gitignore
@@ -0,0 +1,44 @@
+*.dSYM
+*.o
+*.gcno
+*.gcda
+.DS_Store
+
+.wsjcpp-logs/*
+.wsjcpp/*
+
+/.idea
+/cmake-build-*
+
+# Visual Studio / Visual Studio Code
+/.vs/
+/.vscode/
+/out/
+
+# clangd cache
+/.cache/
+
+# build directories (vscode-cmake-tools, user-defined, ...)
+/build*/
+
+# fuzzers
+/tests/corpus_*
+/tests/parse_*_fuzzer
+
+# documentation
+/docs/docset/docSet.dsidx
+/docs/docset/JSON_for_Modern_C++.docset/
+/docs/docset/JSON_for_Modern_C++.tgz
+/docs/mkdocs/docs/__pycache__/
+/docs/mkdocs/docs/examples/
+/docs/mkdocs/docs/images/json.gif
+/docs/mkdocs/site/
+/docs/mkdocs/venv/
+
+# serve_header
+/localhost.pem
+/localhost-key.pem
+/serve_header.yml
+
+# Swift Package Manager build directory
+/.build
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.lgtm.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.lgtm.yml
new file mode 100644
index 00000000..b62f9fb3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.lgtm.yml
@@ -0,0 +1,4 @@
+path_classifiers:
+  thirdparty:
+    - /tools/amalgamate
+    - /tools/cpplint
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.pre-commit-config.yaml b/ohos/vap/vap_module/src/main/cpp/include/util/json/.pre-commit-config.yaml
new file mode 100644
index 00000000..f517e8ae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.pre-commit-config.yaml
@@ -0,0 +1,18 @@
+repos:
+- repo: https://github.com/gitleaks/gitleaks
+  rev: v8.16.3
+  hooks:
+  - id: gitleaks
+- repo: https://github.com/pocc/pre-commit-hooks
+  rev: v1.3.5
+  hooks:
+  - id: cpplint
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+  - id: end-of-file-fixer
+  - id: trailing-whitespace
+- repo: https://github.com/pylint-dev/pylint
+  rev: v2.17.2
+  hooks:
+  - id: pylint
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/README.md
new file mode 100644
index 00000000..29c2b67a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/README.md
@@ -0,0 +1,7 @@
+# REUSE Software
+
+This directory contains supporting files to make the project compliant with the REUSE specification.
+
+The root `Makefile` contains a target `reuse` that updates copyright headers and checks for compliance.
+
+See <http://reuse.software> for more information.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/dep5 b/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/dep5
new file mode 100644
index 00000000..96080238
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/dep5
@@ -0,0 +1,36 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: json
+Upstream-Contact: Niels Lohmann <mail@nlohmann.me>
+Source: https://github.com/nlohmann/json
+
+Files: *
+Copyright: 2013-2024 Niels Lohmann <https://nlohmann.me>
+License: MIT
+
+Files: include/nlohmann/thirdparty/hedley.hpp
+Copyright: 2016-2021 Evan Nemerson <evan@nemerson.com>
+License: CC0
+
+Files: tests/thirdparty/doctest/*
+Copyright: 2016-2021 Viktor Kirilov
+License: MIT
+
+Files: tests/thirdparty/fifo_map/*
+Copyright: 2015-2017 Niels Lohmann
+License: MIT
+
+Files: tests/thirdparty/Fuzzer/*
+Copyright: 2003-2022 LLVM Project.
+License: Apache-2.0
+
+Files: tests/thirdparty/imapdl/*
+Copyright: 2017 Georg Sauthoff <mail@gms.tf>
+License: GPL-3.0-only
+
+Files: tools/amalgamate/*
+Copyright: 2012 Erik Edlund <erik.edlund@32767.se>
+License: BSD-3-Clause
+
+Files: tools/gdb_pretty_printer
+Copyright: 2020 Hannes Domani <https://github.com/ssbssa>
+License: MIT
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/templates/json.jinja2 b/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/templates/json.jinja2
new file mode 100644
index 00000000..9f7df2a3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/templates/json.jinja2
@@ -0,0 +1,11 @@
+    __ _____ _____ _____
+ __|  |   __|     |   | |  JSON for Modern C++
+|  |  |__   |  |  | | | |  version 3.11.3
+|_____|_____|_____|_|___|  https://github.com/nlohmann/json
+
+{% for copyright_line in copyright_lines %}
+{{ copyright_line }}
+{% endfor %}
+{% for expression in spdx_expressions %}
+SPDX-License-Identifier: {{ expression }}
+{% endfor %}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/templates/json_support.jinja2 b/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/templates/json_support.jinja2
new file mode 100644
index 00000000..f12832cb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/.reuse/templates/json_support.jinja2
@@ -0,0 +1,11 @@
+    __ _____ _____ _____
+ __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+|  |  |__   |  |  | | | |  version 3.11.3
+|_____|_____|_____|_|___|  https://github.com/nlohmann/json
+
+{% for copyright_line in copyright_lines %}
+{{ copyright_line }}
+{% endfor %}
+{% for expression in spdx_expressions %}
+SPDX-License-Identifier: {{ expression }}
+{% endfor %}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/BUILD.bazel b/ohos/vap/vap_module/src/main/cpp/include/util/json/BUILD.bazel
new file mode 100644
index 00000000..354460d2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/BUILD.bazel
@@ -0,0 +1,52 @@
+cc_library(
+    name = "json",
+    hdrs = [
+        "include/nlohmann/adl_serializer.hpp",
+        "include/nlohmann/byte_container_with_subtype.hpp",
+        "include/nlohmann/detail/abi_macros.hpp",
+        "include/nlohmann/detail/conversions/from_json.hpp",
+        "include/nlohmann/detail/conversions/to_chars.hpp",
+        "include/nlohmann/detail/conversions/to_json.hpp",
+        "include/nlohmann/detail/exceptions.hpp",
+        "include/nlohmann/detail/hash.hpp",
+        "include/nlohmann/detail/input/binary_reader.hpp",
+        "include/nlohmann/detail/input/input_adapters.hpp",
+        "include/nlohmann/detail/input/json_sax.hpp",
+        "include/nlohmann/detail/input/lexer.hpp",
+        "include/nlohmann/detail/input/parser.hpp",
+        "include/nlohmann/detail/input/position_t.hpp",
+        "include/nlohmann/detail/iterators/internal_iterator.hpp",
+        "include/nlohmann/detail/iterators/iter_impl.hpp",
+        "include/nlohmann/detail/iterators/iteration_proxy.hpp",
+        "include/nlohmann/detail/iterators/iterator_traits.hpp",
+        "include/nlohmann/detail/iterators/json_reverse_iterator.hpp",
+        "include/nlohmann/detail/iterators/primitive_iterator.hpp",
+        "include/nlohmann/detail/json_custom_base_class.hpp",
+        "include/nlohmann/detail/json_pointer.hpp",
+        "include/nlohmann/detail/json_ref.hpp",
+        "include/nlohmann/detail/macro_scope.hpp",
+        "include/nlohmann/detail/macro_unscope.hpp",
+        "include/nlohmann/detail/meta/call_std/begin.hpp",
+        "include/nlohmann/detail/meta/call_std/end.hpp",
+        "include/nlohmann/detail/meta/cpp_future.hpp",
+        "include/nlohmann/detail/meta/detected.hpp",
+        "include/nlohmann/detail/meta/identity_tag.hpp",
+        "include/nlohmann/detail/meta/is_sax.hpp",
+        "include/nlohmann/detail/meta/std_fs.hpp",
+        "include/nlohmann/detail/meta/type_traits.hpp",
+        "include/nlohmann/detail/meta/void_t.hpp",
+        "include/nlohmann/detail/output/binary_writer.hpp",
+        "include/nlohmann/detail/output/output_adapters.hpp",
+        "include/nlohmann/detail/output/serializer.hpp",
+        "include/nlohmann/detail/string_concat.hpp",
+        "include/nlohmann/detail/string_escape.hpp",
+        "include/nlohmann/detail/value_t.hpp",
+        "include/nlohmann/json.hpp",
+        "include/nlohmann/json_fwd.hpp",
+        "include/nlohmann/ordered_map.hpp",
+        "include/nlohmann/thirdparty/hedley/hedley.hpp",
+        "include/nlohmann/thirdparty/hedley/hedley_undef.hpp",
+    ],
+    includes = ["include"],
+    visibility = ["//visibility:public"],
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/CITATION.cff b/ohos/vap/vap_module/src/main/cpp/include/util/json/CITATION.cff
new file mode 100644
index 00000000..fd3b7671
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/CITATION.cff
@@ -0,0 +1,14 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+authors:
+  - family-names: Lohmann
+    given-names: Niels
+    orcid: https://orcid.org/0000-0001-9037-795X
+    email: mail@nlohmann.me
+    website: https://nlohmann.me
+title: "JSON for Modern C++"
+version: 3.11.3
+date-released: 2023-11-28
+license: MIT
+repository-code: "https://github.com/nlohmann"
+url: https://json.nlohmann.me
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/CMakeLists.txt
new file mode 100644
index 00000000..da5799cb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/CMakeLists.txt
@@ -0,0 +1,225 @@
+cmake_minimum_required(VERSION 3.1...3.14)
+
+##
+## PROJECT
+## name and version
+##
+project(nlohmann_json VERSION 3.11.3 LANGUAGES CXX)
+
+##
+## MAIN_PROJECT CHECK
+## determine if nlohmann_json is built as a subproject (using add_subdirectory) or if it is the main project
+##
+set(MAIN_PROJECT OFF)
+if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    set(MAIN_PROJECT ON)
+endif()
+
+##
+## INCLUDE
+##
+##
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})
+include(ExternalProject)
+
+##
+## OPTIONS
+##
+
+if (POLICY CMP0077)
+    # Allow CMake 3.13+ to override options when using FetchContent / add_subdirectory.
+    cmake_policy(SET CMP0077 NEW)
+endif ()
+
+# VERSION_GREATER_EQUAL is not available in CMake 3.1
+if(${MAIN_PROJECT} AND (${CMAKE_VERSION} VERSION_EQUAL 3.13 OR ${CMAKE_VERSION} VERSION_GREATER 3.13))
+    set(JSON_BuildTests_INIT ON)
+else()
+    set(JSON_BuildTests_INIT OFF)
+endif()
+option(JSON_BuildTests                     "Build the unit tests when BUILD_TESTING is enabled." ${JSON_BuildTests_INIT})
+option(JSON_CI                             "Enable CI build targets." OFF)
+option(JSON_Diagnostics                    "Use extended diagnostic messages." OFF)
+option(JSON_Diagnostic_Positions           "Enable diagnostic positions." OFF)
+option(JSON_GlobalUDLs                     "Place user-defined string literals in the global namespace." ON)
+option(JSON_ImplicitConversions            "Enable implicit conversions." ON)
+option(JSON_DisableEnumSerialization       "Disable default integer enum serialization." OFF)
+option(JSON_LegacyDiscardedValueComparison "Enable legacy discarded value comparison." OFF)
+option(JSON_Install                        "Install CMake targets during install step." ${MAIN_PROJECT})
+option(JSON_MultipleHeaders                "Use non-amalgamated version of the library." ON)
+option(JSON_SystemInclude                  "Include as system headers (skip for clang-tidy)." OFF)
+
+if (JSON_CI)
+    include(ci)
+endif ()
+
+##
+## CONFIGURATION
+##
+include(GNUInstallDirs)
+
+if (NOT DEFINED NLOHMANN_JSON_TARGET_NAME)
+    # Allow overriding the target name when using FetchContent / add_subdirectory.
+    set(NLOHMANN_JSON_TARGET_NAME ${PROJECT_NAME})
+endif()
+
+set(NLOHMANN_JSON_CONFIG_INSTALL_DIR        "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}" CACHE INTERNAL "")
+set(NLOHMANN_JSON_INCLUDE_INSTALL_DIR       "${CMAKE_INSTALL_INCLUDEDIR}")
+set(NLOHMANN_JSON_TARGETS_EXPORT_NAME       "${PROJECT_NAME}Targets")
+set(NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE     "cmake/config.cmake.in")
+set(NLOHMANN_JSON_CMAKE_CONFIG_DIR          "${CMAKE_CURRENT_BINARY_DIR}")
+set(NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
+set(NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Config.cmake")
+set(NLOHMANN_JSON_CMAKE_PROJECT_TARGETS_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Targets.cmake")
+set(NLOHMANN_JSON_PKGCONFIG_INSTALL_DIR     "${CMAKE_INSTALL_DATADIR}/pkgconfig")
+
+if (JSON_MultipleHeaders)
+    set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/include/")
+    message(STATUS "Using the multi-header code from ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}")
+else()
+    set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/single_include/")
+    message(STATUS "Using the single-header code from ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}")
+endif()
+
+if (NOT JSON_ImplicitConversions)
+    message(STATUS "Implicit conversions are disabled (JSON_USE_IMPLICIT_CONVERSIONS=0)")
+endif()
+
+if (JSON_DisableEnumSerialization)
+    message(STATUS "Enum integer serialization is disabled (JSON_DISABLE_ENUM_SERIALIZATION=0)")
+endif()
+
+if (JSON_LegacyDiscardedValueComparison)
+    message(STATUS "Legacy discarded value comparison enabled (JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON=1)")
+endif()
+
+if (JSON_Diagnostics)
+    message(STATUS "Diagnostics enabled (JSON_DIAGNOSTICS=1)")
+endif()
+
+if (JSON_Diagnostic_Positions)
+    message(STATUS "Diagnostic positions enabled")
+endif()
+
+if (NOT JSON_GlobalUDLs)
+    message(STATUS "User-defined string literals are not put in the global namespace (JSON_USE_GLOBAL_UDLS=0)")
+endif()
+
+if (JSON_SystemInclude)
+    set(NLOHMANN_JSON_SYSTEM_INCLUDE "SYSTEM")
+endif()
+
+##
+## TARGET
+## create target and add include path
+##
+add_library(${NLOHMANN_JSON_TARGET_NAME} INTERFACE)
+add_library(${PROJECT_NAME}::${NLOHMANN_JSON_TARGET_NAME} ALIAS ${NLOHMANN_JSON_TARGET_NAME})
+if (${CMAKE_VERSION} VERSION_LESS "3.8.0")
+    target_compile_features(${NLOHMANN_JSON_TARGET_NAME} INTERFACE cxx_range_for)
+else()
+    target_compile_features(${NLOHMANN_JSON_TARGET_NAME} INTERFACE cxx_std_11)
+endif()
+
+target_compile_definitions(
+    ${NLOHMANN_JSON_TARGET_NAME}
+    INTERFACE
+    $<$<NOT:$<BOOL:${JSON_GlobalUDLs}>>:JSON_USE_GLOBAL_UDLS=0>
+    $<$<NOT:$<BOOL:${JSON_ImplicitConversions}>>:JSON_USE_IMPLICIT_CONVERSIONS=0>
+    $<$<BOOL:${JSON_DisableEnumSerialization}>:JSON_DISABLE_ENUM_SERIALIZATION=1>
+    $<$<BOOL:${JSON_Diagnostics}>:JSON_DIAGNOSTICS=1>
+    $<$<BOOL:${JSON_Diagnostic_Positions}>:JSON_DIAGNOSTIC_POSITIONS=1>
+    $<$<BOOL:${JSON_LegacyDiscardedValueComparison}>:JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON=1>
+)
+
+target_include_directories(
+    ${NLOHMANN_JSON_TARGET_NAME}
+    ${NLOHMANN_JSON_SYSTEM_INCLUDE} INTERFACE
+    $<BUILD_INTERFACE:${NLOHMANN_JSON_INCLUDE_BUILD_DIR}>
+    $<INSTALL_INTERFACE:${NLOHMANN_JSON_INCLUDE_INSTALL_DIR}>
+)
+
+## add debug view definition file for msvc (natvis)
+if (MSVC)
+    set(NLOHMANN_ADD_NATVIS TRUE)
+    set(NLOHMANN_NATVIS_FILE "nlohmann_json.natvis")
+    target_sources(
+        ${NLOHMANN_JSON_TARGET_NAME}
+        INTERFACE
+            $<INSTALL_INTERFACE:${NLOHMANN_NATVIS_FILE}>
+            $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/${NLOHMANN_NATVIS_FILE}>
+    )
+endif()
+
+# Install a pkg-config file, so other tools can find this.
+CONFIGURE_FILE(
+    "${CMAKE_CURRENT_SOURCE_DIR}/cmake/pkg-config.pc.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
+    @ONLY
+)
+
+##
+## TESTS
+## create and configure the unit test target
+##
+if (JSON_BuildTests)
+    include(CTest)
+    enable_testing()
+    add_subdirectory(tests)
+endif()
+
+##
+## INSTALL
+## install header files, generate and install cmake config files for find_package()
+##
+include(CMakePackageConfigHelpers)
+# use a custom package version config file instead of
+# write_basic_package_version_file to ensure that it's architecture-independent
+# https://github.com/nlohmann/json/issues/1697
+configure_file(
+    "cmake/nlohmann_jsonConfigVersion.cmake.in"
+    ${NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE}
+    @ONLY
+)
+configure_file(
+    ${NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE}
+    ${NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE}
+    @ONLY
+)
+
+if(JSON_Install)
+    install(
+        DIRECTORY ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}
+        DESTINATION ${NLOHMANN_JSON_INCLUDE_INSTALL_DIR}
+    )
+    install(
+        FILES ${NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE} ${NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE}
+        DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR}
+    )
+    if (NLOHMANN_ADD_NATVIS)
+        install(
+            FILES ${NLOHMANN_NATVIS_FILE}
+            DESTINATION .
+    )
+    endif()
+    export(
+        TARGETS ${NLOHMANN_JSON_TARGET_NAME}
+        NAMESPACE ${PROJECT_NAME}::
+        FILE ${NLOHMANN_JSON_CMAKE_PROJECT_TARGETS_FILE}
+    )
+    install(
+        TARGETS ${NLOHMANN_JSON_TARGET_NAME}
+        EXPORT ${NLOHMANN_JSON_TARGETS_EXPORT_NAME}
+        INCLUDES DESTINATION ${NLOHMANN_JSON_INCLUDE_INSTALL_DIR}
+    )
+    install(
+        EXPORT ${NLOHMANN_JSON_TARGETS_EXPORT_NAME}
+        NAMESPACE ${PROJECT_NAME}::
+        DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR}
+    )
+    install(
+        FILES "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
+        DESTINATION ${NLOHMANN_JSON_PKGCONFIG_INSTALL_DIR}
+    )
+    include(CPack)
+endif()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/ChangeLog.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/ChangeLog.md
new file mode 100644
index 00000000..656d68bc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/ChangeLog.md
@@ -0,0 +1,2943 @@
+# Changelog
+All notable changes to this project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [3.11.2](https://github.com/nlohmann/json/releases/tag/3.11.2) (2022-08-12)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.11.1...3.11.2)
+
+- MSVC natvis visualizer does not work after introduction of inline ABI namespace [\#3696](https://github.com/nlohmann/json/issues/3696)
+- The use of parenthesis gives compilation errors in some situations [\#3682](https://github.com/nlohmann/json/issues/3682)
+- extern from/to\_json result in linker error [\#3657](https://github.com/nlohmann/json/issues/3657)
+- json\_fwd.hpp no longer standalone [\#3656](https://github.com/nlohmann/json/issues/3656)
+- regression: `.value<size_t>` is compilation error. [\#3655](https://github.com/nlohmann/json/issues/3655)
+- Regression: no match for 'operator!=' comparing json\_pointer and const char \*/string\_t [\#3654](https://github.com/nlohmann/json/issues/3654)
+- Regression: call to member function 'value' is ambiguous [\#3652](https://github.com/nlohmann/json/issues/3652)
+- macOS 10.15 Actions runner image deprecation [\#3612](https://github.com/nlohmann/json/issues/3612)
+
+- generate\_natvis.py: validate version number; cleanup [\#3698](https://github.com/nlohmann/json/pull/3698) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Add Python script for generating Natvis file and update file for 3.11.2 [\#3697](https://github.com/nlohmann/json/pull/3697) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- fix typo in json\_pointer.md [\#3692](https://github.com/nlohmann/json/pull/3692) ([eltociear](https://github.com/eltociear))
+- Add amalgamated json-fwd.hpp to release [\#3687](https://github.com/nlohmann/json/pull/3687) ([nlohmann](https://github.com/nlohmann))
+- Documentation updates for 3.11.2 [\#3686](https://github.com/nlohmann/json/pull/3686) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Make json\_pointer usable as map key \(again\) [\#3685](https://github.com/nlohmann/json/pull/3685) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Deprecate json\_pointer/string\_t comparisons [\#3684](https://github.com/nlohmann/json/pull/3684) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Restructure inline namespace and allow version component to be disabled [\#3683](https://github.com/nlohmann/json/pull/3683) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Properly constrain non-string json\_pointer overloads [\#3681](https://github.com/nlohmann/json/pull/3681) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Amalgamate the forward declaration header [\#3679](https://github.com/nlohmann/json/pull/3679) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fix 'const' qualifier on bool& has no effect [\#3678](https://github.com/nlohmann/json/pull/3678) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fix whitespace in workflow files [\#3675](https://github.com/nlohmann/json/pull/3675) ([nlohmann](https://github.com/nlohmann))
+- Attempt to fix labeler permissions [\#3674](https://github.com/nlohmann/json/pull/3674) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Refine 'Publish documentation' workflow [\#3673](https://github.com/nlohmann/json/pull/3673) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Documentation change [\#3672](https://github.com/nlohmann/json/pull/3672) ([nlohmann](https://github.com/nlohmann))
+- Add labeler action [\#3671](https://github.com/nlohmann/json/pull/3671) ([nlohmann](https://github.com/nlohmann))
+- Complete contributor list [\#3670](https://github.com/nlohmann/json/pull/3670) ([nlohmann](https://github.com/nlohmann))
+- Add json\_pointer/string\_t equality comparison operators [\#3664](https://github.com/nlohmann/json/pull/3664) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Reimplement value\(\) access functions [\#3663](https://github.com/nlohmann/json/pull/3663) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Complete contributor list [\#3662](https://github.com/nlohmann/json/pull/3662) ([nlohmann](https://github.com/nlohmann))
+- Adjust naming of GitHub action jobs [\#3661](https://github.com/nlohmann/json/pull/3661) ([nlohmann](https://github.com/nlohmann))
+- Publish documentation on push to develop branch [\#3660](https://github.com/nlohmann/json/pull/3660) ([nlohmann](https://github.com/nlohmann))
+- Add Discord badge to README [\#3651](https://github.com/nlohmann/json/pull/3651) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Miscellaneous small fixes [\#3643](https://github.com/nlohmann/json/pull/3643) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Minor BJData fixes [\#3637](https://github.com/nlohmann/json/pull/3637) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Update CI [\#3626](https://github.com/nlohmann/json/pull/3626) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+
+## [v3.11.1](https://github.com/nlohmann/json/releases/tag/v3.11.1) (2022-08-01)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.11.0...v3.11.1)
+
+- Regression: no matching literal operator for call to 'operator""\_json' [\#3645](https://github.com/nlohmann/json/issues/3645)
+- \_json  operator""\(\)  [\#3644](https://github.com/nlohmann/json/issues/3644)
+
+- Fix global UDLs [\#3646](https://github.com/nlohmann/json/pull/3646) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+
+## [v3.11.0](https://github.com/nlohmann/json/releases/tag/v3.11.0) (2022-08-01)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.10.5...v3.11.0)
+
+- ICPC: warning \#1098: the qualifier on this friend declaration is ignored [\#3632](https://github.com/nlohmann/json/issues/3632)
+- Starting with 3.10.4, just adding `\#include json.hpp` causes compile error: `overload resolution selected deleted operator '=' [\#3620](https://github.com/nlohmann/json/issues/3620)
+- xwidgets doesn't compile with version \>3.10.3 [\#3602](https://github.com/nlohmann/json/issues/3602)
+- json\_pointer\_\_pop\_back.cpp example does not compile [\#3600](https://github.com/nlohmann/json/issues/3600)
+- nlohmann::json::array 'push\_back' is ambiguous [\#3589](https://github.com/nlohmann/json/issues/3589)
+- Multiple versions causing conflict [\#3588](https://github.com/nlohmann/json/issues/3588)
+- ERROR: ThreadSanitizer: SEGV on unknown address [\#3584](https://github.com/nlohmann/json/issues/3584)
+- unicode4 test consistently fails on RISC-V hardware [\#3579](https://github.com/nlohmann/json/issues/3579)
+- sax\_parse\(iterator, json\_sax\_t \*\) string callback clobbers spaces [\#3574](https://github.com/nlohmann/json/issues/3574)
+- Nlohmann JSON Parse crash with raylib-cpp [\#3570](https://github.com/nlohmann/json/issues/3570)
+- ordered\_json doesn't accept keys of types other than string\_t \(e.g., string\_view\) [\#3558](https://github.com/nlohmann/json/issues/3558)
+- turning an object into an array [\#3547](https://github.com/nlohmann/json/issues/3547)
+- json:parse\_bjdata\_fuzzer: ASSERT: ref\_stack.back\(\)-\>is\_array\(\) [\#3541](https://github.com/nlohmann/json/issues/3541)
+- Warning about potential null dereference in GCC 12.1 \(Fedora 36\) [\#3525](https://github.com/nlohmann/json/issues/3525)
+- Enable 32bit unit test in CI [\#3524](https://github.com/nlohmann/json/issues/3524)
+- Error when roundtripping BJData [\#3519](https://github.com/nlohmann/json/issues/3519)
+- ASSERT error while parsing BJData [\#3513](https://github.com/nlohmann/json/issues/3513)
+- An exception occurred when sending a string with double quotes [\#3504](https://github.com/nlohmann/json/issues/3504)
+- Binary reader for BJData creates incorrect SAX events [\#3503](https://github.com/nlohmann/json/issues/3503)
+- It can't support  "nan", "inf", "-inf" for float type [\#3494](https://github.com/nlohmann/json/issues/3494)
+- ASAN error while parsing BJData \(Heap-buffer-overflow READ 1\) [\#3492](https://github.com/nlohmann/json/issues/3492)
+- UBSAN error while parsing BJData \(Null-dereference\) [\#3491](https://github.com/nlohmann/json/issues/3491)
+- UBSAN error while parsing BJData \(Invalid-bool-value\) [\#3490](https://github.com/nlohmann/json/issues/3490)
+- json:parse\_bjdata\_fuzzer reaches assertion [\#3475](https://github.com/nlohmann/json/issues/3475)
+- Compilation with -fmodules-ts and use inside of a module [\#3472](https://github.com/nlohmann/json/issues/3472)
+- json.exception.parse\_error.101 only occurs outside of IDE  [\#3467](https://github.com/nlohmann/json/issues/3467)
+- json:parse\_bjdata\_fuzzer reaches assertion [\#3461](https://github.com/nlohmann/json/issues/3461)
+- NLOHMANN\_DEFINE\_TYPE\_NON\_INTRUSIVE\_WITH\_DEFAULT can not parse { "key" : null} [\#3458](https://github.com/nlohmann/json/issues/3458)
+- Unable to compile when using Microsoft's \_CRTDBG [\#3457](https://github.com/nlohmann/json/issues/3457)
+- Compilation errors when including `<filesystem>` and using `--std=c++17` or above \(MinGW/Win10\) [\#3449](https://github.com/nlohmann/json/issues/3449)
+- Weird things on for statement [\#3447](https://github.com/nlohmann/json/issues/3447)
+- Parsing error when there is a json string within a Json [\#3445](https://github.com/nlohmann/json/issues/3445)
+- ordered\_json vs json types comparison [\#3443](https://github.com/nlohmann/json/issues/3443)
+- Error occurred when converting nlohmann::json to std::any [\#3428](https://github.com/nlohmann/json/issues/3428)
+- I was forced to report an assertion error when copying an array of strings [\#3419](https://github.com/nlohmann/json/issues/3419)
+- About Serialization Error invalid UTF-8 byte at index [\#3414](https://github.com/nlohmann/json/issues/3414)
+- Comparison of NaN differs between json and float [\#3409](https://github.com/nlohmann/json/issues/3409)
+- when i use it in C++ sserver,it it constantly show that fatal error: adl\_serializer.hpp: No such file or directory [\#3404](https://github.com/nlohmann/json/issues/3404)
+- parse error [\#3403](https://github.com/nlohmann/json/issues/3403)
+- CMake script MAIN\_PROJECT always OFF [\#3390](https://github.com/nlohmann/json/issues/3390)
+- Parser unable to handle large floating point numbers [\#3389](https://github.com/nlohmann/json/issues/3389)
+- Compilation error if json\_pointer is used with alternative string type [\#3388](https://github.com/nlohmann/json/issues/3388)
+- Unit tests conversions & items fail to build \(Clang \<4.0/C++14 only\) [\#3384](https://github.com/nlohmann/json/issues/3384)
+- Regression test for \#3070 is not being run and fails when enabled [\#3377](https://github.com/nlohmann/json/issues/3377)
+- Refactor unit tests to use more convenient doctest assertion macros [\#3365](https://github.com/nlohmann/json/issues/3365)
+- An json.h issue reported in a static code analyzer [\#3361](https://github.com/nlohmann/json/issues/3361)
+- Mixing different JSON\_DIAGNOSTICS settings in separately compiled units leads to core [\#3360](https://github.com/nlohmann/json/issues/3360)
+- json::out\_of\_range exception matches against lot of others while testing [\#3352](https://github.com/nlohmann/json/issues/3352)
+- use mipsel-openwrt-linux-g++ -std=c++11 to compile, it has some errors "error: 'snprintf' is not a member of 'std'" [\#3349](https://github.com/nlohmann/json/issues/3349)
+- Add proper issue templates [\#3348](https://github.com/nlohmann/json/issues/3348)
+- switch from json to ordered\_json [\#3343](https://github.com/nlohmann/json/issues/3343)
+- Json dump use to compilation errors [\#3339](https://github.com/nlohmann/json/issues/3339)
+- Ambiguous conversion from nlohmann::basic\_json\<\> to custom class. [\#3333](https://github.com/nlohmann/json/issues/3333)
+- Iterator doesn't satisfy std::incrementable because post-increment may change constness [\#3331](https://github.com/nlohmann/json/issues/3331)
+- Inconsistent handling of floating point numbers after parse\(\) [\#3329](https://github.com/nlohmann/json/issues/3329)
+- Documentation for `ordered_json` should show proper use of the `parse()` function. [\#3325](https://github.com/nlohmann/json/issues/3325)
+- "type must be boolean, but is object" error thrown on non-boolean object [\#3319](https://github.com/nlohmann/json/issues/3319)
+- Incomplete Type in request parms [\#3318](https://github.com/nlohmann/json/issues/3318)
+- 小米 MIX4 MIUI13  bug [\#3316](https://github.com/nlohmann/json/issues/3316)
+- json.exception.parse\_error.101 when parsing data received over a socket [\#3313](https://github.com/nlohmann/json/issues/3313)
+- Parse to custom class from unordered\_json breaks on G++11.2.0 with C++20 [\#3312](https://github.com/nlohmann/json/issues/3312)
+- try to assign dumped string to a class member varible [\#3300](https://github.com/nlohmann/json/issues/3300)
+- includedir in pkgconfig is error if install\_headers\(\) has subdir argument.  [\#3284](https://github.com/nlohmann/json/issues/3284)
+- SHA-256 sum of json-3.10.5.tar.xz changes over time \(but not the content itself\) [\#3281](https://github.com/nlohmann/json/issues/3281)
+- items\(\) method does not follow order of json message [\#3278](https://github.com/nlohmann/json/issues/3278)
+- Perplexing template deduction failure serialising a 3rd party type using base class [\#3267](https://github.com/nlohmann/json/issues/3267)
+- json.hpp 'isfinite' is not a member of 'std' also isinf; snprintf; stoull and to\_string members of std [\#3263](https://github.com/nlohmann/json/issues/3263)
+- JSON build fails for C++ cmake [\#3256](https://github.com/nlohmann/json/issues/3256)
+- Unexpected implicit conversion [\#3254](https://github.com/nlohmann/json/issues/3254)
+- Add a function that checks for valid json in a C++ string  [\#3245](https://github.com/nlohmann/json/issues/3245)
+- Replace use of standard IO from error handling [\#3239](https://github.com/nlohmann/json/issues/3239)
+- Use Catch for unit tests [\#3232](https://github.com/nlohmann/json/issues/3232)
+- Exception thrown during initialization causes a memory leak [\#3215](https://github.com/nlohmann/json/issues/3215)
+- Tests failing when compiling with c++20 [\#3207](https://github.com/nlohmann/json/issues/3207)
+- ambiguous regression [\#3204](https://github.com/nlohmann/json/issues/3204)
+- Deserialization: if class is\_constructible from std::string wrong from\_json overload is being selected, compilation failed [\#3171](https://github.com/nlohmann/json/issues/3171)
+- 'clang++ ./json.hpp' with no usage: Compiler syntax problem in clang 3.7.0 \(tizen :/ \) [\#3153](https://github.com/nlohmann/json/issues/3153)
+- build failure on upcoming gcc-12: test/src/unit-regression1.cpp:392:22: error: ambiguous overload for 'operator=' [\#3138](https://github.com/nlohmann/json/issues/3138)
+- Applying JSON patch creates parent object [\#3134](https://github.com/nlohmann/json/issues/3134)
+- Iterators cannot be used with range-v3 [\#3130](https://github.com/nlohmann/json/issues/3130)
+- std::shared\_ptr\<T\> == nlohmann::json compiles, which seem undesirable [\#3026](https://github.com/nlohmann/json/issues/3026)
+- Error in test\download\_test\_data.vcxproj custom build step when compiling with Visual Studio 2019 16.7.7 msbuild on Windows 10 [\#2593](https://github.com/nlohmann/json/issues/2593)
+- Consider putting the user-defined literals in a namespace [\#1682](https://github.com/nlohmann/json/issues/1682)
+- Using versioned namespaces [\#1539](https://github.com/nlohmann/json/issues/1539)
+- How can I use std::string\_view as the json\_key to "operator \[\]" ? [\#1529](https://github.com/nlohmann/json/issues/1529)
+- serialize std::variant\<...\> [\#1261](https://github.com/nlohmann/json/issues/1261)
+
+- Prepare 3.11.0 release [\#3635](https://github.com/nlohmann/json/pull/3635) ([nlohmann](https://github.com/nlohmann))
+- Fix warning [\#3634](https://github.com/nlohmann/json/pull/3634) ([nlohmann](https://github.com/nlohmann))
+- Add license header to new files [\#3633](https://github.com/nlohmann/json/pull/3633) ([nlohmann](https://github.com/nlohmann))
+- Add a unit test including windows.h [\#3631](https://github.com/nlohmann/json/pull/3631) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fixed latest build error in msvc platform [\#3630](https://github.com/nlohmann/json/pull/3630) ([KsaNL](https://github.com/KsaNL))
+- Add regression tests for \#3204 and \#3333 [\#3629](https://github.com/nlohmann/json/pull/3629) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fix patch::add creating nonexistent parents [\#3628](https://github.com/nlohmann/json/pull/3628) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Adjust JSON Pointer examples [\#3622](https://github.com/nlohmann/json/pull/3622) ([nlohmann](https://github.com/nlohmann))
+- Disable exceptions on ICPC [\#3621](https://github.com/nlohmann/json/pull/3621) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- build: install .pc and .cmake files to share/ [\#3619](https://github.com/nlohmann/json/pull/3619) ([Tachi107](https://github.com/Tachi107))
+- Fix MinGW CI failures [\#3618](https://github.com/nlohmann/json/pull/3618) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fix Unicode test timeout \(for real this time!\) [\#3614](https://github.com/nlohmann/json/pull/3614) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Use 'concurrency' in GitHub workflows [\#3610](https://github.com/nlohmann/json/pull/3610) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Use swap\(\) by ADL [\#3609](https://github.com/nlohmann/json/pull/3609) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Move UDLs out of the global namespace [\#3605](https://github.com/nlohmann/json/pull/3605) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Re-add value\_type detection to distinguish string types [\#3604](https://github.com/nlohmann/json/pull/3604) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Add operator\<\<\(json\_pointer\) [\#3601](https://github.com/nlohmann/json/pull/3601) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Add documentation for comparing json and ordered\_json [\#3599](https://github.com/nlohmann/json/pull/3599) ([nlohmann](https://github.com/nlohmann))
+- Clean up after \#3581 [\#3596](https://github.com/nlohmann/json/pull/3596) ([nlohmann](https://github.com/nlohmann))
+- Add assertion if nullptr is passed to parse function [\#3593](https://github.com/nlohmann/json/pull/3593) ([nlohmann](https://github.com/nlohmann))
+- Minor documentation fixes [\#3592](https://github.com/nlohmann/json/pull/3592) ([nlohmann](https://github.com/nlohmann))
+- Add versioned, ABI-tagged inline namespace and namespace macros [\#3590](https://github.com/nlohmann/json/pull/3590) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Add badge for https://repology.org/project/nlohmann-json/versions [\#3586](https://github.com/nlohmann/json/pull/3586) ([nlohmann](https://github.com/nlohmann))
+- Add error message if test suite cannot be found [\#3585](https://github.com/nlohmann/json/pull/3585) ([nlohmann](https://github.com/nlohmann))
+- add patch\_inplace function [\#3581](https://github.com/nlohmann/json/pull/3581) ([wolfv](https://github.com/wolfv))
+- Enable overriding test properties and set Unicode test timeouts [\#3580](https://github.com/nlohmann/json/pull/3580) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Ignore output directory [\#3572](https://github.com/nlohmann/json/pull/3572) ([NN---](https://github.com/NN---))
+- Optimize output vector adapter write [\#3569](https://github.com/nlohmann/json/pull/3569) ([romainreignier](https://github.com/romainreignier))
+- Add overloads for more key types to ordered\_map and fix ordered\_map::erase\(first, last\) with first == last [\#3564](https://github.com/nlohmann/json/pull/3564) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Make certain usage patterns more prominent in the README [\#3557](https://github.com/nlohmann/json/pull/3557) ([jez](https://github.com/jez))
+- CI: fix "JSON\_MultipleHeaders" option spelling [\#3555](https://github.com/nlohmann/json/pull/3555) ([karzhenkov](https://github.com/karzhenkov))
+- More documentation updates for 3.11.0 [\#3553](https://github.com/nlohmann/json/pull/3553) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Use DOCTEST\_\* compiler macros and suppress pragmas warning [\#3550](https://github.com/nlohmann/json/pull/3550) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Add unit test to make sure iterator\_input\_adapter advances iterators correctly [\#3548](https://github.com/nlohmann/json/pull/3548) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Use REUSE framework [\#3546](https://github.com/nlohmann/json/pull/3546) ([nlohmann](https://github.com/nlohmann))
+- Use `std::iterator_traits` to extract `iterator_category` [\#3544](https://github.com/nlohmann/json/pull/3544) ([Mike-Leo-Smith](https://github.com/Mike-Leo-Smith))
+- BJData dimension length can not be string\_t::npos, fix \#3541 [\#3543](https://github.com/nlohmann/json/pull/3543) ([fangq](https://github.com/fangq))
+- Allow disabling default enum conversions [\#3536](https://github.com/nlohmann/json/pull/3536) ([zxey](https://github.com/zxey))
+- Add to\_json\(\) for std::vector\<bool\>::reference [\#3534](https://github.com/nlohmann/json/pull/3534) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- CI: Enable 32bit unit test \(3\) [\#3532](https://github.com/nlohmann/json/pull/3532) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Use new CI image [\#3528](https://github.com/nlohmann/json/pull/3528) ([nlohmann](https://github.com/nlohmann))
+- Fix ndarray dimension signedness, fix ndarray length overflow \(2\); add 32bit unit test [\#3523](https://github.com/nlohmann/json/pull/3523) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Small documentation fixes [\#3520](https://github.com/nlohmann/json/pull/3520) ([nlohmann](https://github.com/nlohmann))
+- Add assertion to converting constructor [\#3517](https://github.com/nlohmann/json/pull/3517) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- CI: Remove -Wstrict-overflow [\#3516](https://github.com/nlohmann/json/pull/3516) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fix nlohmann/json\#3513, explain is\_ndarray flag [\#3514](https://github.com/nlohmann/json/pull/3514) ([fangq](https://github.com/fangq))
+- Prevent ndarray size vector from recursive use, fix nlohmann/json\#3503 [\#3505](https://github.com/nlohmann/json/pull/3505) ([fangq](https://github.com/fangq))
+- prevent ndarray dimension vector from recusive array, nlohmann/json\#3500 [\#3502](https://github.com/nlohmann/json/pull/3502) ([fangq](https://github.com/fangq))
+- Discard optimized containers with negative counts in UBJSON/BJData \(\#3491,\#3492,\#3490\) [\#3500](https://github.com/nlohmann/json/pull/3500) ([fangq](https://github.com/fangq))
+- Update json.hpp [\#3499](https://github.com/nlohmann/json/pull/3499) ([ivanovmp](https://github.com/ivanovmp))
+- Add assertion for invariant in SAX-DOM parser [\#3498](https://github.com/nlohmann/json/pull/3498) ([nlohmann](https://github.com/nlohmann))
+- Add more macOS builders [\#3485](https://github.com/nlohmann/json/pull/3485) ([nlohmann](https://github.com/nlohmann))
+- change bjdata ndarray flag to detect negative size, as part of \#3475 [\#3479](https://github.com/nlohmann/json/pull/3479) ([fangq](https://github.com/fangq))
+- Document fuzzer usage [\#3478](https://github.com/nlohmann/json/pull/3478) ([nlohmann](https://github.com/nlohmann))
+- Add build step for ICPC \(with fixes\) [\#3465](https://github.com/nlohmann/json/pull/3465) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Complete documentation for 3.11.0 [\#3464](https://github.com/nlohmann/json/pull/3464) ([nlohmann](https://github.com/nlohmann))
+- Handle invalid BJData optimized type, fix \#3461 [\#3463](https://github.com/nlohmann/json/pull/3463) ([fangq](https://github.com/fangq))
+- Reorganize directories [\#3462](https://github.com/nlohmann/json/pull/3462) ([nlohmann](https://github.com/nlohmann))
+- Enable rapid testing and development on Compiler Explorer [\#3456](https://github.com/nlohmann/json/pull/3456) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- cpplint 1.6.0 [\#3454](https://github.com/nlohmann/json/pull/3454) ([nlohmann](https://github.com/nlohmann))
+- Disable regression test for \#3070 on GCC \<8.4 [\#3451](https://github.com/nlohmann/json/pull/3451) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fix C++20/gcc-12 issues \(Part 2\) [\#3446](https://github.com/nlohmann/json/pull/3446) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Overwork documentation [\#3444](https://github.com/nlohmann/json/pull/3444) ([nlohmann](https://github.com/nlohmann))
+- Fix typo in basic\_json documentation [\#3439](https://github.com/nlohmann/json/pull/3439) ([jhnlee](https://github.com/jhnlee))
+- Exclude std::any from implicit conversion \(fixes \#3428\) [\#3437](https://github.com/nlohmann/json/pull/3437) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Document which version introduced the macros [\#3431](https://github.com/nlohmann/json/pull/3431) ([nlohmann](https://github.com/nlohmann))
+- Fix constraints on from\_json\(\) for strings \(fixes \#3171, \#3267, \#3312, \#3384\) [\#3427](https://github.com/nlohmann/json/pull/3427) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- at.md: fix typo [\#3426](https://github.com/nlohmann/json/pull/3426) ([heinemml](https://github.com/heinemml))
+- Implement support for string\_view \(attempt no. 3\) [\#3423](https://github.com/nlohmann/json/pull/3423) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- CI: speedup AppVeyor builds by ~30% [\#3422](https://github.com/nlohmann/json/pull/3422) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Restore disabled check for \#3070 \(except on MSVC\) [\#3421](https://github.com/nlohmann/json/pull/3421) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Update CI image [\#3420](https://github.com/nlohmann/json/pull/3420) ([nlohmann](https://github.com/nlohmann))
+- Add check if different version is also included [\#3418](https://github.com/nlohmann/json/pull/3418) ([nlohmann](https://github.com/nlohmann))
+- Report the right \_\_cplusplus value for MSVC in basic\_json meta\(\) [\#3417](https://github.com/nlohmann/json/pull/3417) ([flagarde](https://github.com/flagarde))
+- CI: windows-2016 has been deprecated; remove jobs [\#3416](https://github.com/nlohmann/json/pull/3416) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Re-template json\_pointer on string type [\#3415](https://github.com/nlohmann/json/pull/3415) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Refactor unit tests to use more convenient doctest assertion macros \(Part 2\) [\#3405](https://github.com/nlohmann/json/pull/3405) ([kkarbowiak](https://github.com/kkarbowiak))
+- Refactor unit tests to use more convenient doctest assertion macros [\#3393](https://github.com/nlohmann/json/pull/3393) ([kkarbowiak](https://github.com/kkarbowiak))
+- Improve unit testing \(Part 1\) [\#3380](https://github.com/nlohmann/json/pull/3380) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fix C++20/gcc-12 issues \(Part 1\) [\#3379](https://github.com/nlohmann/json/pull/3379) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Add clarification to avoid misunderstanding that cause \#3360 [\#3378](https://github.com/nlohmann/json/pull/3378) ([puffetto](https://github.com/puffetto))
+- Fix ordered\_map ctor with initializer\_list \(fixes \#3343\) [\#3370](https://github.com/nlohmann/json/pull/3370) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Fix and update CI [\#3368](https://github.com/nlohmann/json/pull/3368) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- FetchContent\_MakeAvailable [\#3351](https://github.com/nlohmann/json/pull/3351) ([nlohmann](https://github.com/nlohmann))
+- Avoid clash with Arduino defines [\#3338](https://github.com/nlohmann/json/pull/3338) ([DarkZeros](https://github.com/DarkZeros))
+- Support UBJSON-derived Binary JData \(BJData\) format [\#3336](https://github.com/nlohmann/json/pull/3336) ([fangq](https://github.com/fangq))
+- Make iterator operator++/--\(int\) equality-preserving [\#3332](https://github.com/nlohmann/json/pull/3332) ([falbrechtskirchinger](https://github.com/falbrechtskirchinger))
+- Add note on parsing ordered\_json [\#3326](https://github.com/nlohmann/json/pull/3326) ([nlohmann](https://github.com/nlohmann))
+- Fix CITATION.cff and add automatic validation of your citation metadata [\#3320](https://github.com/nlohmann/json/pull/3320) ([fdiblen](https://github.com/fdiblen))
+- .github/workflows/windows.yml: Add support for Visual Studio 2022 [\#3295](https://github.com/nlohmann/json/pull/3295) ([t-b](https://github.com/t-b))
+- Add maintainer targets to create source archive [\#3289](https://github.com/nlohmann/json/pull/3289) ([nlohmann](https://github.com/nlohmann))
+- Fix a typo [\#3265](https://github.com/nlohmann/json/pull/3265) ([fhuberts](https://github.com/fhuberts))
+- Fix typo [\#3249](https://github.com/nlohmann/json/pull/3249) ([rex4539](https://github.com/rex4539))
+- Add documentation for JSON Lines [\#3247](https://github.com/nlohmann/json/pull/3247) ([nlohmann](https://github.com/nlohmann))
+- Improve documentation InputType and IteratorType [\#3246](https://github.com/nlohmann/json/pull/3246) ([nlohmann](https://github.com/nlohmann))
+- Remove stringstream [\#3244](https://github.com/nlohmann/json/pull/3244) ([nlohmann](https://github.com/nlohmann))
+- fix \_MSC\_VER version to check for std::filesystem [\#3240](https://github.com/nlohmann/json/pull/3240) ([gcerretani](https://github.com/gcerretani))
+- Add macros NLOHMANN\_DEFINE\_TYPE\_INTRUSIVE\_WITH\_DEFAULT and ...\_NON\_INTRUSIVE\_WITH\_DEFAULT [\#3143](https://github.com/nlohmann/json/pull/3143) ([pketelsen](https://github.com/pketelsen))
+
+## [v3.10.5](https://github.com/nlohmann/json/releases/tag/v3.10.5) (2022-01-03)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.10.4...v3.10.5)
+
+- \#include \<filesystem\> doesn't work with gcc-7 when `-std=c++17` is specified. [\#3203](https://github.com/nlohmann/json/issues/3203)
+- Not able to use nlohmann json with c++ code built using emscripten to wasm [\#3200](https://github.com/nlohmann/json/issues/3200)
+- Warning for shadowed variables [\#3188](https://github.com/nlohmann/json/issues/3188)
+- Accessing missing keys on const json object leads to assert [\#3183](https://github.com/nlohmann/json/issues/3183)
+- Data member is available, but null is reported, and program throws error [\#3173](https://github.com/nlohmann/json/issues/3173)
+- serialization problem, from\_json need construct new object [\#3169](https://github.com/nlohmann/json/issues/3169)
+- std::filesystem unavailable on macOS lower deployment targets [\#3156](https://github.com/nlohmann/json/issues/3156)
+- \[json.exception.type\_error.305\] cannot use operator\[\] with a string argument with string [\#3151](https://github.com/nlohmann/json/issues/3151)
+- json::dump\(\) is not compatible with C++ standards [\#3147](https://github.com/nlohmann/json/issues/3147)
+- Issue with json::parse decoding codepoints [\#3142](https://github.com/nlohmann/json/issues/3142)
+- Simple parse of json object thinks it should be an array [\#3136](https://github.com/nlohmann/json/issues/3136)
+- How to properly read a Json string that may be null in some cases? [\#3135](https://github.com/nlohmann/json/issues/3135)
+- Deadlock on create json - windows only [\#3129](https://github.com/nlohmann/json/issues/3129)
+- Wrong parsing of int64 values nearest of limit [\#3126](https://github.com/nlohmann/json/issues/3126)
+- ordered\_json doesn't support range based erase [\#3108](https://github.com/nlohmann/json/issues/3108)
+- Apple build failed with json/single\_include/nlohmann/json.hpp:4384:57: 'path' is unavailable [\#3097](https://github.com/nlohmann/json/issues/3097)
+- GCC 7.5.0 with --std=c++17: filesystem: No such file or directory [\#3090](https://github.com/nlohmann/json/issues/3090)
+- Drop Travis CI [\#3087](https://github.com/nlohmann/json/issues/3087)
+- ordered\_json::reset\(\) compile error with nvcc [\#3013](https://github.com/nlohmann/json/issues/3013)
+- Support for unordered\_map as object\_t [\#2932](https://github.com/nlohmann/json/issues/2932)
+- Compiler warning with Intel compiler, same as \#755 [\#2712](https://github.com/nlohmann/json/issues/2712)
+- Compiler warnings with NVCC 11.2 [\#2676](https://github.com/nlohmann/json/issues/2676)
+- some static analysis warning at line 11317 [\#1390](https://github.com/nlohmann/json/issues/1390)
+- Compiling with icpc [\#755](https://github.com/nlohmann/json/issues/755)
+
+- Fix compilation error with NVCC [\#3234](https://github.com/nlohmann/json/pull/3234) ([nlohmann](https://github.com/nlohmann))
+- Remove Travis CI [\#3233](https://github.com/nlohmann/json/pull/3233) ([nlohmann](https://github.com/nlohmann))
+- Add build step for NVCC and fix a warning [\#3227](https://github.com/nlohmann/json/pull/3227) ([nlohmann](https://github.com/nlohmann))
+- Update cpplint [\#3225](https://github.com/nlohmann/json/pull/3225) ([nlohmann](https://github.com/nlohmann))
+- Fix: Warning for shadowed variables \(\#3188\) [\#3193](https://github.com/nlohmann/json/pull/3193) ([kernie](https://github.com/kernie))
+- Fix FAQ hyperlink typo in readme [\#3148](https://github.com/nlohmann/json/pull/3148) ([Prince-Mendiratta](https://github.com/Prince-Mendiratta))
+- Docs: Update `skip_comments` to `ignore_comments` [\#3145](https://github.com/nlohmann/json/pull/3145) ([daniel-kun](https://github.com/daniel-kun))
+- fix typos in documentation [\#3140](https://github.com/nlohmann/json/pull/3140) ([striezel](https://github.com/striezel))
+- Fix spelling [\#3125](https://github.com/nlohmann/json/pull/3125) ([axic](https://github.com/axic))
+- Extend std specializations [\#3121](https://github.com/nlohmann/json/pull/3121) ([nlohmann](https://github.com/nlohmann))
+- Add missing erase\(first, last\) function to ordered\_map [\#3109](https://github.com/nlohmann/json/pull/3109) ([nlohmann](https://github.com/nlohmann))
+- Fix typos in operator\[\] documentation [\#3102](https://github.com/nlohmann/json/pull/3102) ([axnsan12](https://github.com/axnsan12))
+- Add C++17 copies of the test binaries [\#3101](https://github.com/nlohmann/json/pull/3101) ([nlohmann](https://github.com/nlohmann))
+- Add examples for parsing from iterator pair [\#3100](https://github.com/nlohmann/json/pull/3100) ([nlohmann](https://github.com/nlohmann))
+- Update CI [\#3088](https://github.com/nlohmann/json/pull/3088) ([nlohmann](https://github.com/nlohmann))
+- Consolidate documentation [\#3071](https://github.com/nlohmann/json/pull/3071) ([nlohmann](https://github.com/nlohmann))
+- Add recursive update function [\#3069](https://github.com/nlohmann/json/pull/3069) ([nlohmann](https://github.com/nlohmann))
+
+## [v3.10.4](https://github.com/nlohmann/json/releases/tag/v3.10.4) (2021-10-16)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.10.3...v3.10.4)
+
+- Compiler error in output serializer due to 'incompatible initializer' [\#3081](https://github.com/nlohmann/json/issues/3081)
+- Strange behaviour when using std::sort on std::vector\<json\> [\#3080](https://github.com/nlohmann/json/issues/3080)
+- Unhandled exception: nlohmann::detail::parse\_error [\#3078](https://github.com/nlohmann/json/issues/3078)
+- explicit constructor with default does not compile [\#3077](https://github.com/nlohmann/json/issues/3077)
+- Parse an object but get an array using GCC [\#3076](https://github.com/nlohmann/json/issues/3076)
+- Version 3.10.3 breaks backward-compatibility with 3.10.2 [\#3070](https://github.com/nlohmann/json/issues/3070)
+- Feature request, Add to\_json/from\_json to align with other to/from binary api.  [\#3067](https://github.com/nlohmann/json/issues/3067)
+- vcpkg is out of date [\#3066](https://github.com/nlohmann/json/issues/3066)
+
+- Revert invalid fix [\#3082](https://github.com/nlohmann/json/pull/3082) ([nlohmann](https://github.com/nlohmann))
+- Allow to use get with explicit constructor [\#3079](https://github.com/nlohmann/json/pull/3079) ([nlohmann](https://github.com/nlohmann))
+- fix std::filesystem::path regression [\#3073](https://github.com/nlohmann/json/pull/3073) ([theodelrieu](https://github.com/theodelrieu))
+
+## [v3.10.3](https://github.com/nlohmann/json/releases/tag/v3.10.3) (2021-10-08)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.10.2...v3.10.3)
+
+- Parsing an emtpy string returns a string with size 1 instead of expected 0 [\#3057](https://github.com/nlohmann/json/issues/3057)
+- Linking error  "duplicate symbol: std::type\_info::operator==" on static build with MinGW [\#3042](https://github.com/nlohmann/json/issues/3042)
+- Yet another assertion failure when inserting into arrays with JSON\_DIAGNOSTICS set [\#3032](https://github.com/nlohmann/json/issues/3032)
+- accept and parse function not work well with a pure number string [\#3029](https://github.com/nlohmann/json/issues/3029)
+- push\_back doesn't work for serializing containers [\#3027](https://github.com/nlohmann/json/issues/3027)
+- Strange behaviour when creating array with single element [\#3025](https://github.com/nlohmann/json/issues/3025)
+- Input ordered\_json doesn't work [\#3023](https://github.com/nlohmann/json/issues/3023)
+- Issue iterating through 'items' [\#3021](https://github.com/nlohmann/json/issues/3021)
+- Cannot spell the namespace right [\#3015](https://github.com/nlohmann/json/issues/3015)
+- JSON Parse error when reading json object from file [\#3011](https://github.com/nlohmann/json/issues/3011)
+- Parent pointer not properly set when using update\(\) [\#3007](https://github.com/nlohmann/json/issues/3007)
+- Overwriting terminated null character [\#3001](https://github.com/nlohmann/json/issues/3001)
+- 'operator =' is ambiguous on VS2017 [\#2997](https://github.com/nlohmann/json/issues/2997)
+- JSON Patch for Array Elements [\#2994](https://github.com/nlohmann/json/issues/2994)
+- JSON Parse throwing error [\#2983](https://github.com/nlohmann/json/issues/2983)
+- to\_{binary format} does not provide a mechanism for specifying a custom allocator for the returned type. [\#2982](https://github.com/nlohmann/json/issues/2982)
+- 3.10.1 zip json.hpp has version number 3.10.0 instead of 3.10.1 [\#2973](https://github.com/nlohmann/json/issues/2973)
+- Assertion failure when serializing array with JSON\_DIAGNOSTICS set [\#2926](https://github.com/nlohmann/json/issues/2926)
+
+- Fix Clang version [\#3040](https://github.com/nlohmann/json/pull/3040) ([nlohmann](https://github.com/nlohmann))
+- Fix assertion failure for JSON\_DIAGNOSTICS [\#3037](https://github.com/nlohmann/json/pull/3037) ([carlsmedstad](https://github.com/carlsmedstad))
+- meta: fix is\_compatible/constructible traits [\#3020](https://github.com/nlohmann/json/pull/3020) ([theodelrieu](https://github.com/theodelrieu))
+- Set parent pointers for values inserted via update\(\) \(fixes \#3007\). [\#3008](https://github.com/nlohmann/json/pull/3008) ([AnthonyVH](https://github.com/AnthonyVH))
+- Allow allocators for output\_vector\_adapter [\#2989](https://github.com/nlohmann/json/pull/2989) ([nlohmann](https://github.com/nlohmann))
+- Re-add Clang 12 [\#2986](https://github.com/nlohmann/json/pull/2986) ([nlohmann](https://github.com/nlohmann))
+- Use new Docker image [\#2981](https://github.com/nlohmann/json/pull/2981) ([nlohmann](https://github.com/nlohmann))
+- Update docset generation script [\#2967](https://github.com/nlohmann/json/pull/2967) ([nlohmann](https://github.com/nlohmann))
+
+## [v3.10.2](https://github.com/nlohmann/json/releases/tag/v3.10.2) (2021-08-26)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.10.1...v3.10.2)
+
+- Annoying -Wundef on new JSON\_DIAGNOSTICS macro [\#2975](https://github.com/nlohmann/json/issues/2975)
+- += issue with multiple redirection. [\#2970](https://github.com/nlohmann/json/issues/2970)
+- "incomplete type ‘nlohmann::detail::wide\_string\_input\_helper" compilation error [\#2969](https://github.com/nlohmann/json/issues/2969)
+
+- Fix -Wunused warnings on JSON\_DIAGNOSTICS  [\#2976](https://github.com/nlohmann/json/pull/2976) ([gcerretani](https://github.com/gcerretani))
+
+## [v3.10.1](https://github.com/nlohmann/json/releases/tag/v3.10.1) (2021-08-24)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.10.0...v3.10.1)
+
+- JSON\_DIAGNOSTICS assertion for ordered\_json [\#2962](https://github.com/nlohmann/json/issues/2962)
+- Inserting in unordered json using a pointer retains the leading slash [\#2958](https://github.com/nlohmann/json/issues/2958)
+- Test  \#9: test-cbor test case sample.json fails in debug mode - Stack overflow [\#2955](https://github.com/nlohmann/json/issues/2955)
+- 3.10.0 broke at least the Bear project [\#2953](https://github.com/nlohmann/json/issues/2953)
+- 2 tests fail in 3.10.0: cmake\_fetch\_content\_configure, cmake\_fetch\_content\_build [\#2951](https://github.com/nlohmann/json/issues/2951)
+- ctest \(58+60,/67 cmake\_import\_configure\) fails when build with -D JSON\_Install:BOOL=OFF because of missing nlohmann\_jsonTargets.cmake [\#2946](https://github.com/nlohmann/json/issues/2946)
+- Document vcpkg usage [\#2944](https://github.com/nlohmann/json/issues/2944)
+- Linker error LNK2005 when compiling \(x64\) json-3.10.0.zip with Visual Studio 2019 16.11.1  [\#2941](https://github.com/nlohmann/json/issues/2941)
+- Move Travis jobs to travis-ci.com [\#2938](https://github.com/nlohmann/json/issues/2938)
+
+- Fixed typo in docs/api/basic\_json/parse.md [\#2968](https://github.com/nlohmann/json/pull/2968) ([mbadhan](https://github.com/mbadhan))
+- Add link to Homebrew package [\#2966](https://github.com/nlohmann/json/pull/2966) ([nlohmann](https://github.com/nlohmann))
+- Fix parent update for diagnostics with ordered\_json [\#2963](https://github.com/nlohmann/json/pull/2963) ([nlohmann](https://github.com/nlohmann))
+- Set stack size for some unit tests when using MSVC [\#2961](https://github.com/nlohmann/json/pull/2961) ([nlohmann](https://github.com/nlohmann))
+- Add regression test [\#2960](https://github.com/nlohmann/json/pull/2960) ([nlohmann](https://github.com/nlohmann))
+- Update Travis badge [\#2959](https://github.com/nlohmann/json/pull/2959) ([nlohmann](https://github.com/nlohmann))
+- Fix some extra ";" clang warnings [\#2957](https://github.com/nlohmann/json/pull/2957) ([Hallot](https://github.com/Hallot))
+- Add documentation for integration via vcpkg [\#2954](https://github.com/nlohmann/json/pull/2954) ([nlohmann](https://github.com/nlohmann))
+- Avoid duplicate AppVeyor builds [\#2952](https://github.com/nlohmann/json/pull/2952) ([nlohmann](https://github.com/nlohmann))
+- 🚨 fix gdb\_pretty\_printer failure on basic types [\#2950](https://github.com/nlohmann/json/pull/2950) ([senyai](https://github.com/senyai))
+- Add header to use value\_t [\#2948](https://github.com/nlohmann/json/pull/2948) ([nlohmann](https://github.com/nlohmann))
+- Skip some tests if JSON\_Install is not set [\#2947](https://github.com/nlohmann/json/pull/2947) ([nlohmann](https://github.com/nlohmann))
+- Remove outdated json\_unit test binary [\#2945](https://github.com/nlohmann/json/pull/2945) ([nlohmann](https://github.com/nlohmann))
+- Updating the Homebrew Command [\#2943](https://github.com/nlohmann/json/pull/2943) ([amirmasoudabdol](https://github.com/amirmasoudabdol))
+
+## [v3.10.0](https://github.com/nlohmann/json/releases/tag/v3.10.0) (2021-08-17)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.9.1...v3.10.0)
+
+- Latest version 3.9.1 uses throw instead of JSON\_THROW in the amalgamated json.hpp file [\#2934](https://github.com/nlohmann/json/issues/2934)
+- Copy to a variable inside a Structure [\#2933](https://github.com/nlohmann/json/issues/2933)
+- warning C4068: unknown pragma 'GCC' on MSVC/cl [\#2924](https://github.com/nlohmann/json/issues/2924)
+- Errors during ninja test [\#2918](https://github.com/nlohmann/json/issues/2918)
+- compiler warning: "not return a value" [\#2917](https://github.com/nlohmann/json/issues/2917)
+- Comparison floating points causes warning [\#2909](https://github.com/nlohmann/json/issues/2909)
+- Why can't I have std::vector\<json&\> testList? [\#2900](https://github.com/nlohmann/json/issues/2900)
+- \[json.hpp\] from releases doesnt work [\#2897](https://github.com/nlohmann/json/issues/2897)
+- g++ \(11\) -Wuseless-cast gives lots of warnings [\#2893](https://github.com/nlohmann/json/issues/2893)
+- Cannot serialize and immediatly deserialize json to/from bson [\#2892](https://github.com/nlohmann/json/issues/2892)
+- Floating-point precision conversion error [\#2876](https://github.com/nlohmann/json/issues/2876)
+- How to avoid escaping for an already escaped string in .dump\(\) [\#2870](https://github.com/nlohmann/json/issues/2870)
+- can't parse std::vector\<std::byte\> [\#2869](https://github.com/nlohmann/json/issues/2869)
+- ASAN detects memory leaks [\#2865](https://github.com/nlohmann/json/issues/2865)
+- Binary subtype field cannot represent all CBOR tags [\#2863](https://github.com/nlohmann/json/issues/2863)
+- string literals possibly being parsed as another type due to the presence of only digits and full-stops [\#2852](https://github.com/nlohmann/json/issues/2852)
+- json::parse\(\) works only with absolute paths [\#2851](https://github.com/nlohmann/json/issues/2851)
+- Compiler Warnings on Raspberry Pi OS [\#2850](https://github.com/nlohmann/json/issues/2850)
+- Braced initialization and aggregate initialization behavior is different for `json::array()` function call. [\#2848](https://github.com/nlohmann/json/issues/2848)
+- 3.9.1: test suite is failing [\#2845](https://github.com/nlohmann/json/issues/2845)
+- Documentation for macro JSON\_NO\_IO is missing [\#2842](https://github.com/nlohmann/json/issues/2842)
+- Assertion failure when inserting into arrays with JSON\_DIAGNOSTICS set [\#2838](https://github.com/nlohmann/json/issues/2838)
+- HELP! There is a memory leak in the code?! [\#2837](https://github.com/nlohmann/json/issues/2837)
+- Elegant conversion of a 2-D-json array to a standard C++ array [\#2805](https://github.com/nlohmann/json/issues/2805)
+- Swift Package Manager support [\#2802](https://github.com/nlohmann/json/issues/2802)
+- Referencing a subkey which doesn't exist gives crash [\#2797](https://github.com/nlohmann/json/issues/2797)
+- Failed benchmark due to renamed branch [\#2796](https://github.com/nlohmann/json/issues/2796)
+- Build Errors with VS 2019 and json Version 3.9.1 when attempting to replicate SAX Example [\#2782](https://github.com/nlohmann/json/issues/2782)
+- Value with spaces cannot be parsed [\#2781](https://github.com/nlohmann/json/issues/2781)
+- \[Question\] CBOR rfc support. [\#2779](https://github.com/nlohmann/json/issues/2779)
+- Using JSON.hpp header file in Visual Studio 2013 \(C++ Project\) [\#2775](https://github.com/nlohmann/json/issues/2775)
+- compilation error on clang-8 + C++17 [\#2759](https://github.com/nlohmann/json/issues/2759)
+- Undefined symbol EOF  [\#2755](https://github.com/nlohmann/json/issues/2755)
+- Parsing a string into json object behaves differently under g++ and MinGW compilers. [\#2746](https://github.com/nlohmann/json/issues/2746)
+- big git history size [\#2742](https://github.com/nlohmann/json/issues/2742)
+- How to get reference of std::vector\<T\> [\#2735](https://github.com/nlohmann/json/issues/2735)
+- CMake failure in VS2019 Community [\#2734](https://github.com/nlohmann/json/issues/2734)
+- Possibility to use with custom c++ version to use in intel sgx enclaves [\#2730](https://github.com/nlohmann/json/issues/2730)
+- Possibility to use without the dependency to file io and streams to use in intel sgx enclaves [\#2728](https://github.com/nlohmann/json/issues/2728)
+- error C2784& error C2839... in my visual studio 2015 compiler [\#2726](https://github.com/nlohmann/json/issues/2726)
+- `-fno-expection` not respected anymore in 3.9.1 [\#2725](https://github.com/nlohmann/json/issues/2725)
+- When exceptions disabled with JSON\_NOEXCEPTION, lib just aborts without any message [\#2724](https://github.com/nlohmann/json/issues/2724)
+- Critical error detected c0000374 on windows10 msvc 2019 16.8.5 [\#2710](https://github.com/nlohmann/json/issues/2710)
+- unused parameter error/warning [\#2706](https://github.com/nlohmann/json/issues/2706)
+- How to store data into a Map from json file [\#2691](https://github.com/nlohmann/json/issues/2691)
+- Tests do not compile with pre-release glibc [\#2686](https://github.com/nlohmann/json/issues/2686)
+- compile errors .... chromium-style [\#2680](https://github.com/nlohmann/json/issues/2680)
+- .dump\(\) not allowing compact form [\#2678](https://github.com/nlohmann/json/issues/2678)
+- error: no matching function for call to ‘nlohmann::basic\_json\<\>::value\(int, std::set\<int\>&\)’ [\#2671](https://github.com/nlohmann/json/issues/2671)
+- Compiler warning: unused parameter [\#2668](https://github.com/nlohmann/json/issues/2668)
+- Deserializing to a struct as shown on the project homepage throws compile time errors [\#2665](https://github.com/nlohmann/json/issues/2665)
+- Unable to compile on MSVC 2019 with SDL checking enabled: This function or variable may be unsafe [\#2664](https://github.com/nlohmann/json/issues/2664)
+- terminating with uncaught exception of type nlohmann::detail::type\_error: \[json.exception.type\_error.302\] type must be array, but is object [\#2661](https://github.com/nlohmann/json/issues/2661)
+- unused-parameter on OSX when Diagnostics is off [\#2658](https://github.com/nlohmann/json/issues/2658)
+- std::pair wrong serialization [\#2655](https://github.com/nlohmann/json/issues/2655)
+- The result of json is\_number\_integer\(\) function is wrong when read a json file  [\#2653](https://github.com/nlohmann/json/issues/2653)
+- 2 backslash cause problem [\#2652](https://github.com/nlohmann/json/issues/2652)
+- No support for using an external/system copy of Hedley [\#2651](https://github.com/nlohmann/json/issues/2651)
+- error: incomplete type 'qfloat16' used in type trait expression [\#2650](https://github.com/nlohmann/json/issues/2650)
+- Unused variable in exception class when not using improved diagnostics [\#2646](https://github.com/nlohmann/json/issues/2646)
+- I am trying to do this - converting from wstring works incorrectly! [\#2642](https://github.com/nlohmann/json/issues/2642)
+- Exception 207 On ARM Processor During Literal String Parsing [\#2634](https://github.com/nlohmann/json/issues/2634)
+- double free or corruption \(!prev\) error on Json push\_back and write [\#2632](https://github.com/nlohmann/json/issues/2632)
+- nlohmann::detail::parse\_error: syntax error while parsing CBOR string: expected length specification \(0x60-0x7B\) or indefinite string type \(0x7F\) [\#2629](https://github.com/nlohmann/json/issues/2629)
+- please allow disabling implicit conversions in non-single-file use [\#2621](https://github.com/nlohmann/json/issues/2621)
+- Preserve decimal formatting [\#2618](https://github.com/nlohmann/json/issues/2618)
+- Visual Studio Visual Assist code issues reported by VA code inspection of file json.hpp [\#2615](https://github.com/nlohmann/json/issues/2615)
+- Missing get function and no viable overloaded '=' on mac [\#2610](https://github.com/nlohmann/json/issues/2610)
+- corruption when parse from string [\#2603](https://github.com/nlohmann/json/issues/2603)
+- Parse from byte-vector results in compile error [\#2602](https://github.com/nlohmann/json/issues/2602)
+- Memory leak when working on ARM Linux [\#2601](https://github.com/nlohmann/json/issues/2601)
+- Unhandled exception in test-cbor.exe Stack overflow when debugging project with Visual Studio 2019 16.7.7 compiled with c++17 or c++latest [\#2598](https://github.com/nlohmann/json/issues/2598)
+- Error in download\_test\_data.vcxproj when compiling with Visual Studio 2019 16.7.7 Professional msbuild on Windows 10 2004 Professional [\#2594](https://github.com/nlohmann/json/issues/2594)
+- Warnings  C4715 and C4127 when building json-3.9.1 with Visual Studio 2019 16.7.7 [\#2592](https://github.com/nlohmann/json/issues/2592)
+- I tried some change to dump\(\) for \[1,2,3...\] [\#2584](https://github.com/nlohmann/json/issues/2584)
+- try/catch block does not catch parsing error [\#2579](https://github.com/nlohmann/json/issues/2579)
+- Serializing uint64\_t is broken for large values [\#2578](https://github.com/nlohmann/json/issues/2578)
+- deserializing arrays should be part of the library [\#2575](https://github.com/nlohmann/json/issues/2575)
+- Deserialization to std::array with non-default constructable types fails [\#2574](https://github.com/nlohmann/json/issues/2574)
+- Compilation error when trying to use same type for number\_integer\_t and number\_unsigned\_t in basic\_json template specification. [\#2573](https://github.com/nlohmann/json/issues/2573)
+- compiler error: directive output may be truncated writing between 2 and 8 bytes [\#2572](https://github.com/nlohmann/json/issues/2572)
+- Incorrect convert map to json when key cannot construct an string i.e. int  [\#2564](https://github.com/nlohmann/json/issues/2564)
+- no matching function for call to ‘nlohmann::basic\_json\<\>::basic\_json\(\<brace-enclosed initializer list\>\)’ [\#2559](https://github.com/nlohmann/json/issues/2559)
+- type\_error factory creates a dangling pointer \(in VisualStudio 2019\) [\#2535](https://github.com/nlohmann/json/issues/2535)
+- Cannot assign from ordered\_json vector\<CustomStruct\> to value in not ordered json [\#2528](https://github.com/nlohmann/json/issues/2528)
+- Qt6: Break changes [\#2519](https://github.com/nlohmann/json/issues/2519)
+- valgrind memcheck Illegal instruction when use nlohmann::json::parse [\#2518](https://github.com/nlohmann/json/issues/2518)
+- Buffer overflow [\#2515](https://github.com/nlohmann/json/issues/2515)
+- Including CTest in the top-level CMakeLists.txt sets BUILD\_TESTING=ON for parent projects [\#2513](https://github.com/nlohmann/json/issues/2513)
+- Compilation error when using NLOHMANN\_JSON\_SERIALIZE\_ENUM ordered\_json on libc++ [\#2491](https://github.com/nlohmann/json/issues/2491)
+- Missing "void insert\( InputIt first, InputIt last \);" overload in nlohmann::ordered\_map [\#2490](https://github.com/nlohmann/json/issues/2490)
+- Could not find a package configuration file provided by "nlohmann\_json" [\#2482](https://github.com/nlohmann/json/issues/2482)
+- json becomes empty for unknown reason [\#2470](https://github.com/nlohmann/json/issues/2470)
+- Using std::wstring as StringType fails compiling [\#2459](https://github.com/nlohmann/json/issues/2459)
+- Sample code in GIF slide outdated \(cannot use emplace\(\) with array\) [\#2457](https://github.com/nlohmann/json/issues/2457)
+- from\_json\<std::wstring\> is treated as an array on latest MSVC [\#2453](https://github.com/nlohmann/json/issues/2453)
+- MemorySanitizer: use-of-uninitialized-value [\#2449](https://github.com/nlohmann/json/issues/2449)
+- I need help [\#2441](https://github.com/nlohmann/json/issues/2441)
+- type conversion failing with clang ext\_vector\_type  [\#2436](https://github.com/nlohmann/json/issues/2436)
+- json::parse\(\) can't be resolved under specific circumstances [\#2427](https://github.com/nlohmann/json/issues/2427)
+- from\_\*\(ptr, len\) deprecation [\#2426](https://github.com/nlohmann/json/issues/2426)
+- Error ONLY in release mode [\#2425](https://github.com/nlohmann/json/issues/2425)
+- "Custom data source" exemple make no sense [\#2423](https://github.com/nlohmann/json/issues/2423)
+- Refuses to compile in project [\#2419](https://github.com/nlohmann/json/issues/2419)
+- Compilation failure of tests with C++20 standard \(caused by change of u8 literals\)  [\#2413](https://github.com/nlohmann/json/issues/2413)
+- No matching function for call to 'input\_adapter' under Xcode of with nlohmann version 3.9.1 [\#2412](https://github.com/nlohmann/json/issues/2412)
+- Git tags are not valid semvers [\#2409](https://github.com/nlohmann/json/issues/2409)
+- after dump, stderr output disappear [\#2403](https://github.com/nlohmann/json/issues/2403)
+- Using custom string. [\#2398](https://github.com/nlohmann/json/issues/2398)
+- value\(\) throws unhandled exception for partially specified json object [\#2393](https://github.com/nlohmann/json/issues/2393)
+- assertion on runtime causes program to stop when accessing const json with missing key [\#2392](https://github.com/nlohmann/json/issues/2392)
+- Usage with -fno-elide-constructors causes dump\(\) output to be array of `null`s [\#2387](https://github.com/nlohmann/json/issues/2387)
+- Build fails with clang-cl due to override of CMAKE\_CXX\_COMPILER\(?\) [\#2384](https://github.com/nlohmann/json/issues/2384)
+- std::optional not working with primitive types [\#2383](https://github.com/nlohmann/json/issues/2383)
+- Unexpected array when initializing a json const& on gcc 4.8.5 using uniform syntax [\#2370](https://github.com/nlohmann/json/issues/2370)
+- setprecision support [\#2362](https://github.com/nlohmann/json/issues/2362)
+- json::parse\(allow\_exceptions = false\) documentation is misleading. [\#2360](https://github.com/nlohmann/json/issues/2360)
+- std::begin and std::end usage without specifying std namespace [\#2359](https://github.com/nlohmann/json/issues/2359)
+- Custom object conversion to json hangs in background thread [\#2358](https://github.com/nlohmann/json/issues/2358)
+- Add support of nullable fields to NLOHMANN\_DEFINE\_TYPE\_NON\_INTRUSIVE and NLOHMANN\_DEFINE\_TYPE\_INTRUSIVE [\#2356](https://github.com/nlohmann/json/issues/2356)
+- the portfile for the vcpkg is not working. [\#2351](https://github.com/nlohmann/json/issues/2351)
+- Compiler warns of implicit fallthrough when defining preprocessor macro NDEBUG [\#2348](https://github.com/nlohmann/json/issues/2348)
+- Compile error on Intel compiler running in Windows [\#2346](https://github.com/nlohmann/json/issues/2346)
+- Build error caused by overwriting CMAKE\_CXX\_COMPILER [\#2343](https://github.com/nlohmann/json/issues/2343)
+- Error: an attribute list cannot appear here     JSON\_HEDLEY\_DEPRECATED\_FOR [\#2342](https://github.com/nlohmann/json/issues/2342)
+- compiler warning [\#2341](https://github.com/nlohmann/json/issues/2341)
+- 3.9.0: tests make build non-reproducible [\#2324](https://github.com/nlohmann/json/issues/2324)
+- Initialization different between gcc/clang [\#2311](https://github.com/nlohmann/json/issues/2311)
+- Attempt to `get()` a numeric value as a type which cannot represent it should throw [\#2310](https://github.com/nlohmann/json/issues/2310)
+- Surprising behaviour with overloaded operators [\#2256](https://github.com/nlohmann/json/issues/2256)
+- ADL issue in input\_adapter [\#2248](https://github.com/nlohmann/json/issues/2248)
+- Output adapters should be templated. [\#2172](https://github.com/nlohmann/json/issues/2172)
+- error when using nlohmann::json, std::function and std::bind [\#2147](https://github.com/nlohmann/json/issues/2147)
+- Remove undefined behavior for const operator\[\] [\#2111](https://github.com/nlohmann/json/issues/2111)
+- json\({}\) gives null instead of empty object with GCC and -std=c++17 [\#2046](https://github.com/nlohmann/json/issues/2046)
+- GDB pretty printing support [\#1952](https://github.com/nlohmann/json/issues/1952)
+- Always compile tests with all warnings enabled and error out on warnings [\#1798](https://github.com/nlohmann/json/issues/1798)
+- Fixes Cppcheck warnings [\#1759](https://github.com/nlohmann/json/issues/1759)
+- How to get position info or parser context with custom from\_json\(\) that may throw exceptions? [\#1508](https://github.com/nlohmann/json/issues/1508)
+- Suggestion to improve value\(\) accessors with respect to move semantics [\#1275](https://github.com/nlohmann/json/issues/1275)
+- Add Key name to Exception [\#932](https://github.com/nlohmann/json/issues/932)
+
+- Overwork warning flags [\#2936](https://github.com/nlohmann/json/pull/2936) ([nlohmann](https://github.com/nlohmann))
+- Treat MSVC warnings as errors [\#2930](https://github.com/nlohmann/json/pull/2930) ([nlohmann](https://github.com/nlohmann))
+- All: fix warnings when compiling with -Wswitch-enum [\#2927](https://github.com/nlohmann/json/pull/2927) ([fhuberts](https://github.com/fhuberts))
+- Guard GCC pragmas [\#2925](https://github.com/nlohmann/json/pull/2925) ([nlohmann](https://github.com/nlohmann))
+- Supress -Wfloat-equal on intended float comparisions [\#2911](https://github.com/nlohmann/json/pull/2911) ([Finkman](https://github.com/Finkman))
+- Fix binary subtypes [\#2908](https://github.com/nlohmann/json/pull/2908) ([nlohmann](https://github.com/nlohmann))
+- Fix useless-cast warnings [\#2902](https://github.com/nlohmann/json/pull/2902) ([nlohmann](https://github.com/nlohmann))
+- Add regression test [\#2898](https://github.com/nlohmann/json/pull/2898) ([nlohmann](https://github.com/nlohmann))
+- Refactor Unicode tests [\#2889](https://github.com/nlohmann/json/pull/2889) ([nlohmann](https://github.com/nlohmann))
+- CMake cleanup [\#2885](https://github.com/nlohmann/json/pull/2885) ([nlohmann](https://github.com/nlohmann))
+- Avoid string in case of empty CBOR objects [\#2879](https://github.com/nlohmann/json/pull/2879) ([nlohmann](https://github.com/nlohmann))
+- Suppress C4127 warning in unit-json\_pointer.cpp [\#2875](https://github.com/nlohmann/json/pull/2875) ([nlohmann](https://github.com/nlohmann))
+- Fix truncation warning [\#2874](https://github.com/nlohmann/json/pull/2874) ([nlohmann](https://github.com/nlohmann))
+- Fix memory leak in to\_json [\#2872](https://github.com/nlohmann/json/pull/2872) ([nlohmann](https://github.com/nlohmann))
+- Fix assertion failure in diagnostics [\#2866](https://github.com/nlohmann/json/pull/2866) ([nlohmann](https://github.com/nlohmann))
+- Update documentation [\#2861](https://github.com/nlohmann/json/pull/2861) ([nlohmann](https://github.com/nlohmann))
+- Consistency with `using` in README.md [\#2826](https://github.com/nlohmann/json/pull/2826) ([justanotheranonymoususer](https://github.com/justanotheranonymoususer))
+- Properly constrain the basic\_json conversion operator [\#2825](https://github.com/nlohmann/json/pull/2825) ([ldionne](https://github.com/ldionne))
+- Fix CI [\#2817](https://github.com/nlohmann/json/pull/2817) ([nlohmann](https://github.com/nlohmann))
+- Specified git branch for google benchmark fetch in benchmark test [\#2795](https://github.com/nlohmann/json/pull/2795) ([grafail](https://github.com/grafail))
+- Add C++ standards to macOS matrix [\#2790](https://github.com/nlohmann/json/pull/2790) ([nlohmann](https://github.com/nlohmann))
+- Update URLs to HTTPS [\#2789](https://github.com/nlohmann/json/pull/2789) ([TotalCaesar659](https://github.com/TotalCaesar659))
+- Link to Conan Center package added [\#2771](https://github.com/nlohmann/json/pull/2771) ([offa](https://github.com/offa))
+- Keep consistent formatting [\#2770](https://github.com/nlohmann/json/pull/2770) ([jasmcaus](https://github.com/jasmcaus))
+- Add a cmake option to use SYSTEM in target\_include\_directories [\#2762](https://github.com/nlohmann/json/pull/2762) ([jpl-mac](https://github.com/jpl-mac))
+- replace EOF with std::char\_traits\<char\>::eof\(\) [\#2756](https://github.com/nlohmann/json/pull/2756) ([nlohmann](https://github.com/nlohmann))
+- Fix typo in README [\#2754](https://github.com/nlohmann/json/pull/2754) ([mortenfyhn](https://github.com/mortenfyhn))
+- Update documentation [\#2749](https://github.com/nlohmann/json/pull/2749) ([nlohmann](https://github.com/nlohmann))
+- Add documentation for numbers [\#2747](https://github.com/nlohmann/json/pull/2747) ([nlohmann](https://github.com/nlohmann))
+- Use Clang 12 in CI [\#2737](https://github.com/nlohmann/json/pull/2737) ([nlohmann](https://github.com/nlohmann))
+- Fixes \#2730 [\#2731](https://github.com/nlohmann/json/pull/2731) ([theShmoo](https://github.com/theShmoo))
+- Possibility to use without the dependency to file io and streams to use in intel sgx enclaves [\#2729](https://github.com/nlohmann/json/pull/2729) ([theShmoo](https://github.com/theShmoo))
+- Update json.hpp [\#2707](https://github.com/nlohmann/json/pull/2707) ([raduteo](https://github.com/raduteo))
+- pkg-config.pc.in: Don't concatenate paths [\#2690](https://github.com/nlohmann/json/pull/2690) ([doronbehar](https://github.com/doronbehar))
+- add more CI steps [\#2689](https://github.com/nlohmann/json/pull/2689) ([nlohmann](https://github.com/nlohmann))
+- Update doctest from 2.4.4 to 2.4.6 \(fixes \#2686\) [\#2687](https://github.com/nlohmann/json/pull/2687) ([musicinmybrain](https://github.com/musicinmybrain))
+- License fix [\#2683](https://github.com/nlohmann/json/pull/2683) ([nlohmann](https://github.com/nlohmann))
+- Update parse\_exceptions.md - correct `json::exception::parse_error` [\#2679](https://github.com/nlohmann/json/pull/2679) ([frasermarlow](https://github.com/frasermarlow))
+- Remove HEDLEY annotation from exception::what\(\) [\#2673](https://github.com/nlohmann/json/pull/2673) ([remyjette](https://github.com/remyjette))
+- Fix amount of entries in the json object [\#2659](https://github.com/nlohmann/json/pull/2659) ([abbaswasim](https://github.com/abbaswasim))
+- Fix missing 1.78 in example in README.md [\#2625](https://github.com/nlohmann/json/pull/2625) ([wawiesel](https://github.com/wawiesel))
+- Add GDB pretty printer [\#2607](https://github.com/nlohmann/json/pull/2607) ([nlohmann](https://github.com/nlohmann))
+- readme: fix tilde character display [\#2582](https://github.com/nlohmann/json/pull/2582) ([bl-ue](https://github.com/bl-ue))
+- Add support for deserialization of STL containers of non-default constructable types \(fixes \#2574\). [\#2576](https://github.com/nlohmann/json/pull/2576) ([AnthonyVH](https://github.com/AnthonyVH))
+- Better diagnostics [\#2562](https://github.com/nlohmann/json/pull/2562) ([nlohmann](https://github.com/nlohmann))
+- CI targets [\#2561](https://github.com/nlohmann/json/pull/2561) ([nlohmann](https://github.com/nlohmann))
+- Add switch to skip non-reproducible tests. [\#2560](https://github.com/nlohmann/json/pull/2560) ([nlohmann](https://github.com/nlohmann))
+- Fix compilation of input\_adapter\(container\) in edge cases [\#2553](https://github.com/nlohmann/json/pull/2553) ([jasujm](https://github.com/jasujm))
+- Allow parsing from std::byte containers [\#2550](https://github.com/nlohmann/json/pull/2550) ([nlohmann](https://github.com/nlohmann))
+- Travis doesn't run any tests in C++17 mode [\#2540](https://github.com/nlohmann/json/pull/2540) ([karzhenkov](https://github.com/karzhenkov))
+- Doctest is updated to v2.4.3 [\#2538](https://github.com/nlohmann/json/pull/2538) ([YarikTH](https://github.com/YarikTH))
+- Fix warnings [\#2537](https://github.com/nlohmann/json/pull/2537) ([nlohmann](https://github.com/nlohmann))
+- Fix a shadowing warning [\#2536](https://github.com/nlohmann/json/pull/2536) ([nlohmann](https://github.com/nlohmann))
+- Clarify license of is\_complete\_type implementation [\#2534](https://github.com/nlohmann/json/pull/2534) ([nlohmann](https://github.com/nlohmann))
+- Do not unconditionally redefine C++14 constructs [\#2533](https://github.com/nlohmann/json/pull/2533) ([nlohmann](https://github.com/nlohmann))
+- Doctest is updated to v2.4.1 [\#2525](https://github.com/nlohmann/json/pull/2525) ([YarikTH](https://github.com/YarikTH))
+- Add MAIN\_PROJECT check for test and install options [\#2514](https://github.com/nlohmann/json/pull/2514) ([globberwops](https://github.com/globberwops))
+- Ranged insert test section is added in unit-ordered\_json.cpp [\#2512](https://github.com/nlohmann/json/pull/2512) ([YarikTH](https://github.com/YarikTH))
+- Add asserts to suppress C28020 [\#2447](https://github.com/nlohmann/json/pull/2447) ([jbzdarkid](https://github.com/jbzdarkid))
+- Change argument name "subtype" in byte\_container\_with\_subtype [\#2444](https://github.com/nlohmann/json/pull/2444) ([linev](https://github.com/linev))
+- 📝  add CPM.Cmake example [\#2406](https://github.com/nlohmann/json/pull/2406) ([leozz37](https://github.com/leozz37))
+- Fix move constructor of json\_ref [\#2405](https://github.com/nlohmann/json/pull/2405) ([karzhenkov](https://github.com/karzhenkov))
+- Properly select "Release" build for Travis [\#2375](https://github.com/nlohmann/json/pull/2375) ([karzhenkov](https://github.com/karzhenkov))
+- Update Hedley [\#2367](https://github.com/nlohmann/json/pull/2367) ([nlohmann](https://github.com/nlohmann))
+- Fix and extend documentation of discarded values [\#2363](https://github.com/nlohmann/json/pull/2363) ([nlohmann](https://github.com/nlohmann))
+- Fix typos in documentation [\#2354](https://github.com/nlohmann/json/pull/2354) ([rbuch](https://github.com/rbuch))
+- Remove "\#define private public" from tests [\#2352](https://github.com/nlohmann/json/pull/2352) ([nlohmann](https://github.com/nlohmann))
+- Remove -Wimplicit-fallthrough warning [\#2349](https://github.com/nlohmann/json/pull/2349) ([nlohmann](https://github.com/nlohmann))
+- Fix code to work without exceptions [\#2347](https://github.com/nlohmann/json/pull/2347) ([nlohmann](https://github.com/nlohmann))
+- fix cmake script overwriting compiler path [\#2344](https://github.com/nlohmann/json/pull/2344) ([ongjunjie](https://github.com/ongjunjie))
+
+## [v3.9.1](https://github.com/nlohmann/json/releases/tag/v3.9.1) (2020-08-06)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.9.0...v3.9.1)
+
+- Can't parse not formatted JSON. [\#2340](https://github.com/nlohmann/json/issues/2340)
+- parse returns desired array contained in array when JSON text begins with square bracket on gcc 7.5.0 [\#2339](https://github.com/nlohmann/json/issues/2339)
+- Unexpected deserialization difference between Mac and Linux [\#2338](https://github.com/nlohmann/json/issues/2338)
+- Reading ordered\_json from file causes compile error [\#2331](https://github.com/nlohmann/json/issues/2331)
+- ignore\_comment=true fails on multiple consecutive lines starting with comments [\#2330](https://github.com/nlohmann/json/issues/2330)
+- Update documentation about Homebrew installation and CMake integration - Homebrew [\#2326](https://github.com/nlohmann/json/issues/2326)
+- Chinese character initialize error [\#2325](https://github.com/nlohmann/json/issues/2325)
+- json.update and vector\<pair\>does not work with ordered\_json [\#2315](https://github.com/nlohmann/json/issues/2315)
+- Ambiguous call to overloaded function [\#2210](https://github.com/nlohmann/json/issues/2210)
+
+- Fix fallthrough warning [\#2333](https://github.com/nlohmann/json/pull/2333) ([nlohmann](https://github.com/nlohmann))
+- Fix lexer to properly cope with repeated comments [\#2332](https://github.com/nlohmann/json/pull/2332) ([nlohmann](https://github.com/nlohmann))
+- Fix name of Homebrew formula in documentation [\#2327](https://github.com/nlohmann/json/pull/2327) ([nlohmann](https://github.com/nlohmann))
+- fix typo [\#2320](https://github.com/nlohmann/json/pull/2320) ([wx257osn2](https://github.com/wx257osn2))
+- Fix a bug due to missing overloads in ordered\_map container [\#2319](https://github.com/nlohmann/json/pull/2319) ([nlohmann](https://github.com/nlohmann))
+- cmake: install pkg-config file relative to current\_binary\_dir [\#2318](https://github.com/nlohmann/json/pull/2318) ([eli-schwartz](https://github.com/eli-schwartz))
+- Fixed installation of pkg-config file on other than Ubuntu [\#2314](https://github.com/nlohmann/json/pull/2314) ([xvitaly](https://github.com/xvitaly))
+
+## [v3.9.0](https://github.com/nlohmann/json/releases/tag/v3.9.0) (2020-07-27)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.8.0...v3.9.0)
+
+- Unknown Type Name clang error when using NLOHMANN\_DEFINE\_TYPE\_NON\_INTRUSIVE [\#2313](https://github.com/nlohmann/json/issues/2313)
+- Clang 10.0 / GCC 10.1 warnings on disabled exceptions [\#2304](https://github.com/nlohmann/json/issues/2304)
+- Application stalls indefinitely with message byte size 10 [\#2293](https://github.com/nlohmann/json/issues/2293)
+- linker error [\#2292](https://github.com/nlohmann/json/issues/2292)
+- Add support for high-precision numbers in UBJSON encoding [\#2286](https://github.com/nlohmann/json/issues/2286)
+- NLOHMANN\_DEFINE\_TYPE\_NON\_INTRUSIVE fails if the length of the argument is 10 [\#2280](https://github.com/nlohmann/json/issues/2280)
+- Custom types : MACRO expansion bug [\#2267](https://github.com/nlohmann/json/issues/2267)
+- to/from\_json Failing To Convert String [\#2238](https://github.com/nlohmann/json/issues/2238)
+- clang 9.0 report warning: unused type alias 'size\_type' \[-Wunused-local-typedef\] [\#2221](https://github.com/nlohmann/json/issues/2221)
+- Enormous array created when working with map\<int,T\> [\#2220](https://github.com/nlohmann/json/issues/2220)
+- Can I disable sorting of json values [\#2219](https://github.com/nlohmann/json/issues/2219)
+- Getting Qt types to work [\#2217](https://github.com/nlohmann/json/issues/2217)
+- Convert to Qt QVariant  [\#2216](https://github.com/nlohmann/json/issues/2216)
+- How to custom serialize same data type of vector? [\#2215](https://github.com/nlohmann/json/issues/2215)
+- json constructor does not support std::optional [\#2214](https://github.com/nlohmann/json/issues/2214)
+- Failing to Parse Valid JSON [\#2209](https://github.com/nlohmann/json/issues/2209)
+- \(De-\)Serialization of std::variant with namespaces [\#2208](https://github.com/nlohmann/json/issues/2208)
+- Addint support for complex type [\#2207](https://github.com/nlohmann/json/issues/2207)
+- array\_index possible out of range [\#2205](https://github.com/nlohmann/json/issues/2205)
+- Object deserialized as array [\#2204](https://github.com/nlohmann/json/issues/2204)
+- Sending to a function a reference to a sub-branch [\#2200](https://github.com/nlohmann/json/issues/2200)
+- How to Serialize derived class to JSON object?  [\#2199](https://github.com/nlohmann/json/issues/2199)
+- JSON incorrectly serialized [\#2198](https://github.com/nlohmann/json/issues/2198)
+- Exception Unhandled out\_of\_range error [\#2197](https://github.com/nlohmann/json/issues/2197)
+- msgpack serialisation : float is treated as 64bit float, not 32bit float. [\#2196](https://github.com/nlohmann/json/issues/2196)
+- Is it possible to use compile-time type guarantees for JSON structures? [\#2195](https://github.com/nlohmann/json/issues/2195)
+- Question : performance against python dict [\#2194](https://github.com/nlohmann/json/issues/2194)
+- vs2017 compile error [\#2192](https://github.com/nlohmann/json/issues/2192)
+- Check if a key exists [\#2191](https://github.com/nlohmann/json/issues/2191)
+- Failed to run tests due to missing test data on builders without Internet access [\#2190](https://github.com/nlohmann/json/issues/2190)
+- 3.8.0: unit-cbor.cpp test failures [\#2189](https://github.com/nlohmann/json/issues/2189)
+- 'nlohmann/json.hpp' file not found [\#2188](https://github.com/nlohmann/json/issues/2188)
+- How to send json data over the wire? [\#2185](https://github.com/nlohmann/json/issues/2185)
+- Ubuntu 16 not supporting nlohmann/json? [\#2184](https://github.com/nlohmann/json/issues/2184)
+- .get\<std::string\> causing emdash errors [\#2180](https://github.com/nlohmann/json/issues/2180)
+- Object properties should not be re-sorted alphabetically [\#2179](https://github.com/nlohmann/json/issues/2179)
+- Custom type registration : instrusive API [\#2175](https://github.com/nlohmann/json/issues/2175)
+- Many version of the function "void to\_json\(json& j, const MyStruct& struct\)" [\#2171](https://github.com/nlohmann/json/issues/2171)
+- How should strings be escaped? [\#2155](https://github.com/nlohmann/json/issues/2155)
+- Adding a value to an existing json puts it at the beginning instead of the end [\#2149](https://github.com/nlohmann/json/issues/2149)
+- The header file is big, can we use what we need. [\#2134](https://github.com/nlohmann/json/issues/2134)
+- Changing the default format for unordered\_map \(or other set\) [\#2132](https://github.com/nlohmann/json/issues/2132)
+- Getting size of deserialized bson document [\#2131](https://github.com/nlohmann/json/issues/2131)
+- implicit conversion failure [\#2128](https://github.com/nlohmann/json/issues/2128)
+- Error thrown when parsing in a subclass [\#2124](https://github.com/nlohmann/json/issues/2124)
+- explicit conversion to string not considered for std::map keys in GCC8 [\#2096](https://github.com/nlohmann/json/issues/2096)
+- Add support for JSONC [\#2061](https://github.com/nlohmann/json/issues/2061)
+- Library provides template arg for string\_type but assumes std::string in some places [\#2059](https://github.com/nlohmann/json/issues/2059)
+- incremental parsing with sax\_parser [\#2030](https://github.com/nlohmann/json/issues/2030)
+- Question about flatten and unflatten [\#1989](https://github.com/nlohmann/json/issues/1989)
+- CBOR parser doesn't skip tags [\#1968](https://github.com/nlohmann/json/issues/1968)
+- Compilation failure using Clang on Windows [\#1898](https://github.com/nlohmann/json/issues/1898)
+- Fail to build when including json.hpp as a system include [\#1818](https://github.com/nlohmann/json/issues/1818)
+- Parsing string into json doesn't preserve the order correctly. [\#1817](https://github.com/nlohmann/json/issues/1817)
+- \[C++17\] Allow std::optional to convert to nlohmann::json [\#1749](https://github.com/nlohmann/json/issues/1749)
+- How can I save json object in file in order?  [\#1717](https://github.com/nlohmann/json/issues/1717)
+- Support for Comments [\#1513](https://github.com/nlohmann/json/issues/1513)
+- clang compiler: error : unknown type name 'not' [\#1119](https://github.com/nlohmann/json/issues/1119)
+- dump\(\) without alphabetical order [\#1106](https://github.com/nlohmann/json/issues/1106)
+- operator T\(\) considered harmful [\#958](https://github.com/nlohmann/json/issues/958)
+- Order of the elements in JSON object [\#952](https://github.com/nlohmann/json/issues/952)
+- How to prevent alphabetical sorting of data? [\#727](https://github.com/nlohmann/json/issues/727)
+- Why is an object ordering values by Alphabetical Order?  [\#660](https://github.com/nlohmann/json/issues/660)
+- Feature request: Comments [\#597](https://github.com/nlohmann/json/issues/597)
+- Head Elements Sorting [\#543](https://github.com/nlohmann/json/issues/543)
+- Automatic ordered JSON [\#424](https://github.com/nlohmann/json/issues/424)
+- Support for comments. [\#376](https://github.com/nlohmann/json/issues/376)
+- Optional comment support. [\#363](https://github.com/nlohmann/json/issues/363)
+- Strip comments / Minify [\#294](https://github.com/nlohmann/json/issues/294)
+- maintaining order of keys during iteration [\#106](https://github.com/nlohmann/json/issues/106)
+
+- Update documentation [\#2312](https://github.com/nlohmann/json/pull/2312) ([nlohmann](https://github.com/nlohmann))
+- Fix bug in CBOR tag handling [\#2308](https://github.com/nlohmann/json/pull/2308) ([nlohmann](https://github.com/nlohmann))
+- added inline to NLOHMANN\_DEFINE\_TYPE\_NON\_INTRUSIVE macro [\#2306](https://github.com/nlohmann/json/pull/2306) ([jwittbrodt](https://github.com/jwittbrodt))
+- fixes unused variable 'ex' for \#2304 [\#2305](https://github.com/nlohmann/json/pull/2305) ([AODQ](https://github.com/AODQ))
+- Cleanup [\#2303](https://github.com/nlohmann/json/pull/2303) ([nlohmann](https://github.com/nlohmann))
+- Add test with multiple translation units [\#2301](https://github.com/nlohmann/json/pull/2301) ([nlohmann](https://github.com/nlohmann))
+- Merge GitHub actions [\#2300](https://github.com/nlohmann/json/pull/2300) ([nlohmann](https://github.com/nlohmann))
+- Fix unused parameter [\#2299](https://github.com/nlohmann/json/pull/2299) ([nlohmann](https://github.com/nlohmann))
+- Add support for high-precision numbers in UBJSON encoding [\#2297](https://github.com/nlohmann/json/pull/2297) ([nlohmann](https://github.com/nlohmann))
+- fix eof for get\_binary and get\_string [\#2294](https://github.com/nlohmann/json/pull/2294) ([jprochazk](https://github.com/jprochazk))
+- Serialisation macros: increase upper bound on number of member variables [\#2287](https://github.com/nlohmann/json/pull/2287) ([pfeatherstone](https://github.com/pfeatherstone))
+- add inline specifier for detail::combine [\#2285](https://github.com/nlohmann/json/pull/2285) ([T0b1-iOS](https://github.com/T0b1-iOS))
+- Add static assertion for missing binary function in SAX interface [\#2282](https://github.com/nlohmann/json/pull/2282) ([nlohmann](https://github.com/nlohmann))
+- Add test for target\_include\_directories [\#2279](https://github.com/nlohmann/json/pull/2279) ([nlohmann](https://github.com/nlohmann))
+- Clean up maintainer Makefiles and fix some linter warnings [\#2274](https://github.com/nlohmann/json/pull/2274) ([nlohmann](https://github.com/nlohmann))
+- Add option to ignore CBOR tags [\#2273](https://github.com/nlohmann/json/pull/2273) ([nlohmann](https://github.com/nlohmann))
+- Hash function without allocation [\#2269](https://github.com/nlohmann/json/pull/2269) ([nlohmann](https://github.com/nlohmann))
+- Add ClangCL for MSVC [\#2268](https://github.com/nlohmann/json/pull/2268) ([t-b](https://github.com/t-b))
+- Makefile: Always use SED variable [\#2264](https://github.com/nlohmann/json/pull/2264) ([t-b](https://github.com/t-b))
+- Add Xcode 12 CI [\#2262](https://github.com/nlohmann/json/pull/2262) ([nlohmann](https://github.com/nlohmann))
+- Make library work with Clang on Windows [\#2259](https://github.com/nlohmann/json/pull/2259) ([nlohmann](https://github.com/nlohmann))
+- Add ordered\_json specialization with ordered object keys [\#2258](https://github.com/nlohmann/json/pull/2258) ([nlohmann](https://github.com/nlohmann))
+- Add pkg-config file [\#2253](https://github.com/nlohmann/json/pull/2253) ([ericonr](https://github.com/ericonr))
+- Fix regression from \#2181 [\#2251](https://github.com/nlohmann/json/pull/2251) ([nlohmann](https://github.com/nlohmann))
+- Tag binary values in cbor if set [\#2244](https://github.com/nlohmann/json/pull/2244) ([matthewbauer](https://github.com/matthewbauer))
+- Make assert configurable via JSON\_ASSERT [\#2242](https://github.com/nlohmann/json/pull/2242) ([nlohmann](https://github.com/nlohmann))
+- Add specialization of get\_to [\#2233](https://github.com/nlohmann/json/pull/2233) ([nlohmann](https://github.com/nlohmann))
+- Refine documentation of error\_handler parameter [\#2232](https://github.com/nlohmann/json/pull/2232) ([nlohmann](https://github.com/nlohmann))
+- Simplify conversion from/to custom types [\#2225](https://github.com/nlohmann/json/pull/2225) ([nlohmann](https://github.com/nlohmann))
+- Remove unused typedefs [\#2224](https://github.com/nlohmann/json/pull/2224) ([nlohmann](https://github.com/nlohmann))
+- Enable CMake policy CMP0077 [\#2222](https://github.com/nlohmann/json/pull/2222) ([alexreinking](https://github.com/alexreinking))
+- Add option to ignore comments in parse/accept functions [\#2212](https://github.com/nlohmann/json/pull/2212) ([nlohmann](https://github.com/nlohmann))
+- Fix Clang-Tidy warnings [\#2211](https://github.com/nlohmann/json/pull/2211) ([nlohmann](https://github.com/nlohmann))
+- Simple ordered\_json that works on all supported compilers [\#2206](https://github.com/nlohmann/json/pull/2206) ([gatopeich](https://github.com/gatopeich))
+- Use unsigned indizies for array index in json pointer [\#2203](https://github.com/nlohmann/json/pull/2203) ([t-b](https://github.com/t-b))
+- Add option to not rely on Internet connectivity during test stage [\#2202](https://github.com/nlohmann/json/pull/2202) ([nlohmann](https://github.com/nlohmann))
+- Serialize floating-point numbers with 32 bit when possible \(MessagePack\) [\#2201](https://github.com/nlohmann/json/pull/2201) ([nlohmann](https://github.com/nlohmann))
+- Fix consistency in function `int_to_string()` [\#2193](https://github.com/nlohmann/json/pull/2193) ([dota17](https://github.com/dota17))
+- Fix issue\#1275 [\#2181](https://github.com/nlohmann/json/pull/2181) ([dota17](https://github.com/dota17))
+- C++20 support by removing swap specialization [\#2176](https://github.com/nlohmann/json/pull/2176) ([gracicot](https://github.com/gracicot))
+- Feat/explicit conversion operator [\#1559](https://github.com/nlohmann/json/pull/1559) ([theodelrieu](https://github.com/theodelrieu))
+
+## [v3.8.0](https://github.com/nlohmann/json/releases/tag/v3.8.0) (2020-06-14)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.7.3...v3.8.0)
+
+- sorry delete this issue, i'm stupid [\#2187](https://github.com/nlohmann/json/issues/2187)
+- Append to a std::nlohmann::json type [\#2186](https://github.com/nlohmann/json/issues/2186)
+- Some troubles to compile the last revision [\#2177](https://github.com/nlohmann/json/issues/2177)
+- ​\#​ Top level CMakeLists.txt​
+​project​\(FOO\)
+...
+​option​\(FOO\_USE\_EXTERNAL\_JSON ​"Use an external JSON library"​ ​OFF​\)
+...
+​add\_subdirectory​\(thirdparty\)
+...
+​add\_library​\(foo ...\)
+...
+​\#​ Note that the namespaced target will always be available regardless of the​
+​\#​ import method​
+​target\_link\_libraries​\(foo ​PRIVATE​ nlohmann\_json::nlohmann\_json\) [\#2170](https://github.com/nlohmann/json/issues/2170)
+- https://www.github.com/nlohmann/json/tree/develop/include%2Fnlohmann%2Fjson\_fwd.hpp [\#2169](https://github.com/nlohmann/json/issues/2169)
+- templated from\_json of non primitive types causes gcc error [\#2168](https://github.com/nlohmann/json/issues/2168)
+- few warnings/errors in copy assignment [\#2167](https://github.com/nlohmann/json/issues/2167)
+- Different output when upgrading from clang 9 to clang 10 [\#2166](https://github.com/nlohmann/json/issues/2166)
+- Cannot build with VS 2019 / C++17 [\#2163](https://github.com/nlohmann/json/issues/2163)
+- Q: When I received an illegal string,How the program knows? [\#2162](https://github.com/nlohmann/json/issues/2162)
+- Problem while reading a json file [\#2161](https://github.com/nlohmann/json/issues/2161)
+- converting std::chrono::system\_clock::time\_point to json. [\#2159](https://github.com/nlohmann/json/issues/2159)
+-  how to parse vector\<struct\> format [\#2157](https://github.com/nlohmann/json/issues/2157)
+- nlohmann::json and =nullptr [\#2156](https://github.com/nlohmann/json/issues/2156)
+- test-cbor fails [\#2154](https://github.com/nlohmann/json/issues/2154)
+- Accessing array inside array syntax?  [\#2151](https://github.com/nlohmann/json/issues/2151)
+- Best way to catch errors when querying json [\#2150](https://github.com/nlohmann/json/issues/2150)
+- JSON Data Mapping Key-Value from other Key-Value [\#2148](https://github.com/nlohmann/json/issues/2148)
+- Conflicts with std \<any\> compiling with GCC 10 [\#2146](https://github.com/nlohmann/json/issues/2146)
+- Incorrect CMake FetchContent example [\#2142](https://github.com/nlohmann/json/issues/2142)
+- Help for a Beginner? [\#2141](https://github.com/nlohmann/json/issues/2141)
+- Read Json from File [\#2139](https://github.com/nlohmann/json/issues/2139)
+- How to feed a predefined integer value into json string [\#2138](https://github.com/nlohmann/json/issues/2138)
+- getting json array inside json object [\#2135](https://github.com/nlohmann/json/issues/2135)
+- Add .contains example to doc [\#2133](https://github.com/nlohmann/json/issues/2133)
+- Is it safe to return string.c\_str\(\) received from get\(\)? [\#2130](https://github.com/nlohmann/json/issues/2130)
+- GCC 10: Compilation error when including any before including json header in C++17 mode [\#2129](https://github.com/nlohmann/json/issues/2129)
+- Intersection of two json files [\#2127](https://github.com/nlohmann/json/issues/2127)
+- App crashes when dump method called for non ascii chars. [\#2126](https://github.com/nlohmann/json/issues/2126)
+- iterator based erase method [\#2122](https://github.com/nlohmann/json/issues/2122)
+- quick and convenient api to get/set nested json values [\#2120](https://github.com/nlohmann/json/issues/2120)
+- assigning nullptr to std::string [\#2118](https://github.com/nlohmann/json/issues/2118)
+- usless\_cast warnings with gcc 9.3 and 10.1 \(C++17\) [\#2114](https://github.com/nlohmann/json/issues/2114)
+- clang 10 warning [\#2113](https://github.com/nlohmann/json/issues/2113)
+- Possible incorrect \_MSC\_VER reference [\#2112](https://github.com/nlohmann/json/issues/2112)
+- warning under gcc 10.1 [\#2110](https://github.com/nlohmann/json/issues/2110)
+- Wdeprecated-declarations from GCC v10.1.0 [\#2109](https://github.com/nlohmann/json/issues/2109)
+- Global std::vector from json [\#2108](https://github.com/nlohmann/json/issues/2108)
+- heap-buffer-overflow when using nlohmann/json, ASAN, and gtest [\#2107](https://github.com/nlohmann/json/issues/2107)
+- exception 0x770DC5AF when i read an special char in json file [\#2106](https://github.com/nlohmann/json/issues/2106)
+- json::parse\(\) fails to parse a dump\(2,' '\) output, yet does successfully parse dump\(\) [\#2105](https://github.com/nlohmann/json/issues/2105)
+- run test-udt error  in MSVC 19.16.27034.0 [\#2103](https://github.com/nlohmann/json/issues/2103)
+- Unable to dump to stringstream [\#2102](https://github.com/nlohmann/json/issues/2102)
+- Can't ad an object in another objet [\#2101](https://github.com/nlohmann/json/issues/2101)
+- Implicit conversion causes "cannot use operator\[\] with a string argument with string" [\#2098](https://github.com/nlohmann/json/issues/2098)
+- C++20: char8\_t [\#2097](https://github.com/nlohmann/json/issues/2097)
+- Compilation issues when included in project [\#2094](https://github.com/nlohmann/json/issues/2094)
+- string value with null character causes infinite loop [\#2093](https://github.com/nlohmann/json/issues/2093)
+- corrupted size vs. prev\_size \(aborted\) [\#2092](https://github.com/nlohmann/json/issues/2092)
+- Get string field content without return std::string copy  [\#2091](https://github.com/nlohmann/json/issues/2091)
+- JSON Comments \(JSON 5\) [\#2090](https://github.com/nlohmann/json/issues/2090)
+- Remove \#include \<ciso646\> [\#2089](https://github.com/nlohmann/json/issues/2089)
+- JSON library as a git submodule [\#2088](https://github.com/nlohmann/json/issues/2088)
+- Apple Clang 11.0.3 on MacOS Catalina 10.15.4 not compiling [\#2087](https://github.com/nlohmann/json/issues/2087)
+- Value function return empty object even if it exist [\#2086](https://github.com/nlohmann/json/issues/2086)
+- Cannot debug but Run works [\#2085](https://github.com/nlohmann/json/issues/2085)
+- Question about serialization. [\#2084](https://github.com/nlohmann/json/issues/2084)
+- How to include in an external project [\#2083](https://github.com/nlohmann/json/issues/2083)
+- Missing tests for binary values [\#2082](https://github.com/nlohmann/json/issues/2082)
+- How to override default string serialization? [\#2079](https://github.com/nlohmann/json/issues/2079)
+- Can't have a json type as a property in an arbitrary type [\#2078](https://github.com/nlohmann/json/issues/2078)
+- New release? [\#2075](https://github.com/nlohmann/json/issues/2075)
+- CMake FetchContent \> Updating the documentation? [\#2073](https://github.com/nlohmann/json/issues/2073)
+- How to convert STL Vector \(of user defined type\) to Json [\#2072](https://github.com/nlohmann/json/issues/2072)
+- how to make an array of objects [\#2070](https://github.com/nlohmann/json/issues/2070)
+- ‘\_\_int64’ was not declared [\#2068](https://github.com/nlohmann/json/issues/2068)
+- \[json.exception.type\_error.317\] cannot serialize binary data to text JSON [\#2067](https://github.com/nlohmann/json/issues/2067)
+- Unexpected end of input; expected '\[', '{', or a literal [\#2066](https://github.com/nlohmann/json/issues/2066)
+- Json structure can be nested? [\#2065](https://github.com/nlohmann/json/issues/2065)
+- Bug: returning reference to local temporary object [\#2064](https://github.com/nlohmann/json/issues/2064)
+- Allow to use non strict parsing [\#2063](https://github.com/nlohmann/json/issues/2063)
+- Crashing on json::at [\#2062](https://github.com/nlohmann/json/issues/2062)
+- How to convert a const std::vector\<char8\_t\> message to a json, to be able to parse it and extract information from it? Can you point to any examples? [\#2058](https://github.com/nlohmann/json/issues/2058)
+- Nice library [\#2057](https://github.com/nlohmann/json/issues/2057)
+- json.hpp:15372:22: error: expected unqualified-id if \(not std::isfinite\(x\)\): Started getting this bug after updating my XCode [\#2056](https://github.com/nlohmann/json/issues/2056)
+- Confused as how I can extract the values from the JSON object. [\#2055](https://github.com/nlohmann/json/issues/2055)
+- Warnings with GCC 10 [\#2052](https://github.com/nlohmann/json/issues/2052)
+- Warnings with Clang 10 [\#2049](https://github.com/nlohmann/json/issues/2049)
+- Update doctest [\#2048](https://github.com/nlohmann/json/issues/2048)
+- Unclear error message: "cannot use operator\[\] with a string argument with array" [\#2047](https://github.com/nlohmann/json/issues/2047)
+- Serializing std::variant\<T, std::vector\<T\>\> [\#2045](https://github.com/nlohmann/json/issues/2045)
+- Crash when parse big jsonfile [\#2042](https://github.com/nlohmann/json/issues/2042)
+- How to check if a key exists without silently generating null objects on the path [\#2041](https://github.com/nlohmann/json/issues/2041)
+- Crash when traversing over items\(\) of temporary json objects [\#2040](https://github.com/nlohmann/json/issues/2040)
+- How to parse multiple line value ? [\#2039](https://github.com/nlohmann/json/issues/2039)
+- SAX API uses unsigned std::size\_t but  -1 if element size is not known; [\#2037](https://github.com/nlohmann/json/issues/2037)
+- How to parse big decimal data [\#2036](https://github.com/nlohmann/json/issues/2036)
+- how use   template \<typename T\> struct adl\_serializer  [\#2035](https://github.com/nlohmann/json/issues/2035)
+- auto iterator returned by find to handle value depending if is string or numeric. [\#2032](https://github.com/nlohmann/json/issues/2032)
+- pass find returned iterator to numeric variable. [\#2031](https://github.com/nlohmann/json/issues/2031)
+- Parse error on valid json file [\#2029](https://github.com/nlohmann/json/issues/2029)
+- Is here any elegant way to combine serialization and deserialization code? [\#2028](https://github.com/nlohmann/json/issues/2028)
+- Notes about dump function [\#2027](https://github.com/nlohmann/json/issues/2027)
+- Different JSON printouts for empty dictionary on Linux and Mac. [\#2026](https://github.com/nlohmann/json/issues/2026)
+- easier way to get exception reason out of json\_sax\_dom\_callback\_parser without exceptions [\#2024](https://github.com/nlohmann/json/issues/2024)
+- Using fifo\_map with base class and derived class [\#2023](https://github.com/nlohmann/json/issues/2023)
+- Error reading JSON File  [\#2022](https://github.com/nlohmann/json/issues/2022)
+- Parse causing crash on android.  Cannot catch. [\#2021](https://github.com/nlohmann/json/issues/2021)
+- Extra backslashes in nested json [\#2020](https://github.com/nlohmann/json/issues/2020)
+- How to create patch for merge\_patch input ? [\#2018](https://github.com/nlohmann/json/issues/2018)
+- CppUTest/include/CppUTestExt/MockSupport.h:40: error: default argument for ‘MockFailureReporter\* failureReporterForThisCall’ has type ‘void\*’ [\#2017](https://github.com/nlohmann/json/issues/2017)
+- including another file [\#2016](https://github.com/nlohmann/json/issues/2016)
+- GNU PREREQ Error with gcc 9.3.0 [\#2015](https://github.com/nlohmann/json/issues/2015)
+- Parse error: json.exception.parse\_error.101 - invalid string: ill-formed UTF-8 byte [\#2014](https://github.com/nlohmann/json/issues/2014)
+- Add more flexibility to basic\_json's ObjectType \(and ArrayType\) [\#2013](https://github.com/nlohmann/json/issues/2013)
+- afl persistent mode [\#2012](https://github.com/nlohmann/json/issues/2012)
+- Compiler Errors under VS2019 in Appveyor CI [\#2009](https://github.com/nlohmann/json/issues/2009)
+- Another compilation failure with Visual Studio [\#2007](https://github.com/nlohmann/json/issues/2007)
+- Implicit cast to std::string broken again with VS2019 16.5.0 [\#2006](https://github.com/nlohmann/json/issues/2006)
+- error: no matching member function for call to 'AddRaw' [\#2005](https://github.com/nlohmann/json/issues/2005)
+- When I re-create an object again after the network request, an error is reported [\#2003](https://github.com/nlohmann/json/issues/2003)
+- How to merge \(and not replace\) different Json::Value objects in jsoncpp [\#2001](https://github.com/nlohmann/json/issues/2001)
+- scalar transforms to list [\#2000](https://github.com/nlohmann/json/issues/2000)
+- Dump JSON containing multibyte characters [\#1999](https://github.com/nlohmann/json/issues/1999)
+- Build error  when modify value [\#1998](https://github.com/nlohmann/json/issues/1998)
+- How do i include a vector of pointers in my json? [\#1997](https://github.com/nlohmann/json/issues/1997)
+- Compiler error wrt incomplete types changed in gcc8.3.0-26 [\#1996](https://github.com/nlohmann/json/issues/1996)
+- NaN-like comparison behavior of discarded is inconvenient [\#1988](https://github.com/nlohmann/json/issues/1988)
+- Maintaining JSON package in my CMake [\#1987](https://github.com/nlohmann/json/issues/1987)
+- reading int number and string number [\#1986](https://github.com/nlohmann/json/issues/1986)
+- Build error: keyword is hidden by macro definition! [\#1985](https://github.com/nlohmann/json/issues/1985)
+- JSON patch diff for op=add formation is not as per standard \(RFC 6902\) [\#1983](https://github.com/nlohmann/json/issues/1983)
+- json\_pointer.contains\(\) exception is incorrectly raised [\#1982](https://github.com/nlohmann/json/issues/1982)
+- Error with non existing key [\#1981](https://github.com/nlohmann/json/issues/1981)
+- Closed [\#1978](https://github.com/nlohmann/json/issues/1978)
+- Where is the library built and what is the name? [\#1977](https://github.com/nlohmann/json/issues/1977)
+- The cmake\_import example does not build [\#1976](https://github.com/nlohmann/json/issues/1976)
+- Dumping core when reading invalid file [\#1975](https://github.com/nlohmann/json/issues/1975)
+- Abort in dump\(\) method [\#1973](https://github.com/nlohmann/json/issues/1973)
+- Unclear docs regarding parser\_callback\_t callbacks [\#1972](https://github.com/nlohmann/json/issues/1972)
+- Possible memory leak on push\_back [\#1971](https://github.com/nlohmann/json/issues/1971)
+- Is it possible to get a safe mutable reference/pointer to internal variant used in nlohmann json?  [\#1970](https://github.com/nlohmann/json/issues/1970)
+- Getting a flatten json to map\<string, string\> [\#1957](https://github.com/nlohmann/json/issues/1957)
+- forced type conversion or lexical cast without exception. [\#1955](https://github.com/nlohmann/json/issues/1955)
+- Add json\_view type support to avoid excessive copying [\#1954](https://github.com/nlohmann/json/issues/1954)
+- Adding "examples" section for real-life usages [\#1953](https://github.com/nlohmann/json/issues/1953)
+- Add nlohmann::json::key\_type [\#1951](https://github.com/nlohmann/json/issues/1951)
+- cannot use operator\[\] with a string argument with string [\#1949](https://github.com/nlohmann/json/issues/1949)
+- std::ifstream \>\> json error [\#1948](https://github.com/nlohmann/json/issues/1948)
+- Cannot update json data in an iterator? [\#1947](https://github.com/nlohmann/json/issues/1947)
+- How can i build this library in VS 2017? [\#1943](https://github.com/nlohmann/json/issues/1943)
+- json\_pointer.contains\(\) exceptions when path not found [\#1942](https://github.com/nlohmann/json/issues/1942)
+- Nested objects serialize/deserialize [\#1941](https://github.com/nlohmann/json/issues/1941)
+- Compile warning on architectures that are not x86 [\#1939](https://github.com/nlohmann/json/issues/1939)
+- Version of nlohmann-json-dev in debian packages [\#1938](https://github.com/nlohmann/json/issues/1938)
+- Create a json object for every cycle  [\#1937](https://github.com/nlohmann/json/issues/1937)
+- How to get the object name? [\#1936](https://github.com/nlohmann/json/issues/1936)
+- Reserve and resize function for basic json [\#1935](https://github.com/nlohmann/json/issues/1935)
+- How to use json parse in tsl::ordread\_map? [\#1934](https://github.com/nlohmann/json/issues/1934)
+- C++14 support is not enabled with msvc2015 [\#1932](https://github.com/nlohmann/json/issues/1932)
+- Need help with to\_json for derived class, keep getting "cannot use operator" [\#1931](https://github.com/nlohmann/json/issues/1931)
+- How to handle std::vector\<std::uint8\_t\> [\#1930](https://github.com/nlohmann/json/issues/1930)
+- Heap corruption issue [\#1929](https://github.com/nlohmann/json/issues/1929)
+- Add `std::wistream` support. [\#1928](https://github.com/nlohmann/json/issues/1928)
+- This i can write and read any file thanks [\#1927](https://github.com/nlohmann/json/issues/1927)
+- How can I get this simple example working? [\#1926](https://github.com/nlohmann/json/issues/1926)
+- emplace\_back does not seems to work with the int 0 [\#1925](https://github.com/nlohmann/json/issues/1925)
+- Why nlohmann does not release memory [\#1924](https://github.com/nlohmann/json/issues/1924)
+- Is it possible to have template `json::parse` with `noexcept` specifier? [\#1922](https://github.com/nlohmann/json/issues/1922)
+- JSON to wstring? [\#1921](https://github.com/nlohmann/json/issues/1921)
+- GCC 10 tests build failure [\#1920](https://github.com/nlohmann/json/issues/1920)
+- Size of binary json representations [\#1919](https://github.com/nlohmann/json/issues/1919)
+- Accessing strings \(for example in keys or values\) without having the lib create a copy of it. [\#1916](https://github.com/nlohmann/json/issues/1916)
+- operator== documentation should show how to apply custom comparison function [\#1915](https://github.com/nlohmann/json/issues/1915)
+- char8\_t and std::u8string support [\#1914](https://github.com/nlohmann/json/issues/1914)
+- std::is\_pod is deprecated in C++20 [\#1913](https://github.com/nlohmann/json/issues/1913)
+- Incomplete types reported by \(experimental\) GCC10 [\#1912](https://github.com/nlohmann/json/issues/1912)
+- Compile warnings on MSVC 14.2 [\#1911](https://github.com/nlohmann/json/issues/1911)
+- How to parse json file with   type composition  of std::optional  and std::variant [\#1910](https://github.com/nlohmann/json/issues/1910)
+- why root\_schema be  implemented as unique\_ptr in json-validator.cpp，could I use it as shared\_ptr? [\#1908](https://github.com/nlohmann/json/issues/1908)
+- compile error in gcc-6.3.0 [\#1906](https://github.com/nlohmann/json/issues/1906)
+- Scalar constexpr is odr-used when used as json initializer [\#1905](https://github.com/nlohmann/json/issues/1905)
+- install Slack app [\#1904](https://github.com/nlohmann/json/issues/1904)
+- typo in a comment [\#1903](https://github.com/nlohmann/json/issues/1903)
+- Watch JSON variables in Debug [\#1902](https://github.com/nlohmann/json/issues/1902)
+- does Json sdk cares about dfc dfd utf8 issue? [\#1901](https://github.com/nlohmann/json/issues/1901)
+- Allow multiple line string value in JSON [\#1897](https://github.com/nlohmann/json/issues/1897)
+- Writing map to json file  [\#1896](https://github.com/nlohmann/json/issues/1896)
+- Small documentation mistake [\#1895](https://github.com/nlohmann/json/issues/1895)
+- why static function `parse` cann't find in visual studio 2019 [\#1894](https://github.com/nlohmann/json/issues/1894)
+- Best way to handle json files with missing key value pairs. [\#1893](https://github.com/nlohmann/json/issues/1893)
+- accessing json object as multimap [\#1892](https://github.com/nlohmann/json/issues/1892)
+- What is the best way to parse vec3s into glm::vec3 [\#1891](https://github.com/nlohmann/json/issues/1891)
+- Get array of items without using vector [\#1890](https://github.com/nlohmann/json/issues/1890)
+- Build errors \(clang 11.0.0\) on macOS 10.15.2 [\#1889](https://github.com/nlohmann/json/issues/1889)
+- Multiple arrays to vectors help [\#1888](https://github.com/nlohmann/json/issues/1888)
+- json::parse\(begin, end\) parse error on first character using uchar\* [\#1887](https://github.com/nlohmann/json/issues/1887)
+- issue in free\(\) [\#1886](https://github.com/nlohmann/json/issues/1886)
+- is\_number\_unsigned\(\) returns false for positive integers \(int or 0 or 1 literals\) [\#1885](https://github.com/nlohmann/json/issues/1885)
+- MSVC build failure with /Zc:\_\_cplusplus and C++17 [\#1883](https://github.com/nlohmann/json/issues/1883)
+- RFC 6901 op:replace & arrays [\#1882](https://github.com/nlohmann/json/issues/1882)
+- Problem with serialization of my custom template doubly-linked list [\#1881](https://github.com/nlohmann/json/issues/1881)
+- is\_array\(\) is True, but raise 'cannot use operator\[\] for object iterators' [\#1880](https://github.com/nlohmann/json/issues/1880)
+- Serialize dynamic array [\#1879](https://github.com/nlohmann/json/issues/1879)
+- Serialization of struct object. [\#1877](https://github.com/nlohmann/json/issues/1877)
+- warning:c4503 [\#1875](https://github.com/nlohmann/json/issues/1875)
+- Why are flattened empty objects/arrays not representable? [\#1874](https://github.com/nlohmann/json/issues/1874)
+- Container Overflow \(ASAN\) when using operator \>\> on an ifs [\#1873](https://github.com/nlohmann/json/issues/1873)
+- Sub-array to vector or map object? [\#1870](https://github.com/nlohmann/json/issues/1870)
+- WIP: QT \(cute\) type supports [\#1869](https://github.com/nlohmann/json/issues/1869)
+- Compiler flags to disable features and shrink code size [\#1868](https://github.com/nlohmann/json/issues/1868)
+- null strings [\#1867](https://github.com/nlohmann/json/issues/1867)
+- Struct with array of struct and \_\_attribute\_\_\(\(packed\)\) [\#1866](https://github.com/nlohmann/json/issues/1866)
+- Best way to extract numbers in the string? [\#1865](https://github.com/nlohmann/json/issues/1865)
+- Displaying \\?\Volume{guid} from string to json giving error [\#1864](https://github.com/nlohmann/json/issues/1864)
+- not working when compiling as x86 [\#1863](https://github.com/nlohmann/json/issues/1863)
+- Skipping evaluation of log line expressions with a macro, is it possible? [\#1862](https://github.com/nlohmann/json/issues/1862)
+- Suppress warnings [\#1861](https://github.com/nlohmann/json/issues/1861)
+- conflit with g++ compile option -mwindows [\#1860](https://github.com/nlohmann/json/issues/1860)
+- How to serialize nested classes to semi-flat JSON object? [\#1859](https://github.com/nlohmann/json/issues/1859)
+- Memory Requirement for large json file [\#1858](https://github.com/nlohmann/json/issues/1858)
+- Query a binary format \(BSON, CBOR, MessagePack, UBJSON\) [\#1856](https://github.com/nlohmann/json/issues/1856)
+- Documentation on operator\[\] behavior with missing keys [\#1855](https://github.com/nlohmann/json/issues/1855)
+- Problem in converting string into JSON; Can't parse successfully. [\#1854](https://github.com/nlohmann/json/issues/1854)
+- json.at\_or\_default\(key, defaultval\) [\#1852](https://github.com/nlohmann/json/issues/1852)
+- please improve the enum conversion documentation \(my example gist provided\) [\#1851](https://github.com/nlohmann/json/issues/1851)
+- Default value returned on ValueType nlohmann::basic\_json::value \(const typename object\_t::key\_type& key, const ValueType& default\_value\) 	 [\#1850](https://github.com/nlohmann/json/issues/1850)
+- Accounting for arbitrary precision numerical literals [\#1849](https://github.com/nlohmann/json/issues/1849)
+- While trying to make a simple array, I get a nested array instead [\#1848](https://github.com/nlohmann/json/issues/1848)
+- How to reuse the parser and serializer intermediate storage? [\#1847](https://github.com/nlohmann/json/issues/1847)
+- Too much content in json.hpp leads to slow compilation [\#1845](https://github.com/nlohmann/json/issues/1845)
+- Cannot read some data in json file [\#1843](https://github.com/nlohmann/json/issues/1843)
+- Precompiled JSON library? [\#1842](https://github.com/nlohmann/json/issues/1842)
+- Please change assert into throw\(maybe\) in line 17946 [\#1841](https://github.com/nlohmann/json/issues/1841)
+- JSON for modern C++ ECCN information [\#1840](https://github.com/nlohmann/json/issues/1840)
+- CI: reduce build time for Travis valgrind [\#1836](https://github.com/nlohmann/json/issues/1836)
+- How do I traverse a json object and add new elements into the hierarchy [\#1834](https://github.com/nlohmann/json/issues/1834)
+- Invalid UTF-8 byte at index 1: 0x65 [\#1831](https://github.com/nlohmann/json/issues/1831)
+- Serialize big data in json [\#1828](https://github.com/nlohmann/json/issues/1828)
+- Backslash '\' in value causes exception [\#1827](https://github.com/nlohmann/json/issues/1827)
+- from\_json for non default constructible class with dependency injection [\#1819](https://github.com/nlohmann/json/issues/1819)
+- Semi-frequent timeouts in `test-unicode_all` with 3.6.1 \(aarch64\) [\#1816](https://github.com/nlohmann/json/issues/1816)
+- input\_adapter not user extensible [\#1813](https://github.com/nlohmann/json/issues/1813)
+- crash at json::destroy on android  [\#1812](https://github.com/nlohmann/json/issues/1812)
+- Logs are repeating while cmake [\#1809](https://github.com/nlohmann/json/issues/1809)
+- Add a the possibility to add dynamic json objects [\#1795](https://github.com/nlohmann/json/issues/1795)
+- Unnecessary test data file in the release [\#1790](https://github.com/nlohmann/json/issues/1790)
+- Add support for parse stack limiting [\#1788](https://github.com/nlohmann/json/issues/1788)
+- GCC -Wuseless-cast warnings [\#1777](https://github.com/nlohmann/json/issues/1777)
+- compilation issue with NVCC 9.0 [\#1773](https://github.com/nlohmann/json/issues/1773)
+- Unexpected behavior with fifo\_map json when copy and append  [\#1763](https://github.com/nlohmann/json/issues/1763)
+- Parse error [\#1761](https://github.com/nlohmann/json/issues/1761)
+- Assignment \(using value\(\)\) to nonexistent element behaves differently on Xcode 8 vs Xcode 10 [\#1758](https://github.com/nlohmann/json/issues/1758)
+- Readme out of date [\#1756](https://github.com/nlohmann/json/issues/1756)
+- cmake\_\* tests don't use the build system's compiler [\#1747](https://github.com/nlohmann/json/issues/1747)
+- Static assertions for template type properties required [\#1729](https://github.com/nlohmann/json/issues/1729)
+- Use float and possibly half in json::to\_cbor [\#1719](https://github.com/nlohmann/json/issues/1719)
+- json::from\_cbor does not respect allow\_exceptions = false when input is string literal [\#1715](https://github.com/nlohmann/json/issues/1715)
+- /Zc:\_\_cplusplus leads to C2416 [\#1695](https://github.com/nlohmann/json/issues/1695)
+- `unflatten` vs objects with number-ish keys [\#1575](https://github.com/nlohmann/json/issues/1575)
+- A "thinner" source code tar as part of release? [\#1572](https://github.com/nlohmann/json/issues/1572)
+- Repository is almost 450MB [\#1497](https://github.com/nlohmann/json/issues/1497)
+- Substantial performance penalty caused by polymorphic input adapter  [\#1457](https://github.com/nlohmann/json/issues/1457)
+- Move tests to a separate repo [\#1235](https://github.com/nlohmann/json/issues/1235)
+- reduce repos size [\#1185](https://github.com/nlohmann/json/issues/1185)
+- CMakeLists.txt in release zips? [\#1184](https://github.com/nlohmann/json/issues/1184)
+- Minimal branch? [\#1066](https://github.com/nlohmann/json/issues/1066)
+- Move test blobs to a submodule? [\#732](https://github.com/nlohmann/json/issues/732)
+- \[Question\] When using this as git submodule, will it clone the whole thing include test data and benchmark? [\#620](https://github.com/nlohmann/json/issues/620)
+- Need to improve ignores.. [\#567](https://github.com/nlohmann/json/issues/567)
+- Minimal repository \(current size very large\) [\#556](https://github.com/nlohmann/json/issues/556)
+- For a header-only library you have to clone 214MB [\#482](https://github.com/nlohmann/json/issues/482)
+- 17 MB / 90 MB repo size!? [\#96](https://github.com/nlohmann/json/issues/96)
+
+- Improve parse\_ubjson\_fuzzer [\#2182](https://github.com/nlohmann/json/pull/2182) ([tanuj208](https://github.com/tanuj208))
+- Add input adapter tests [\#2178](https://github.com/nlohmann/json/pull/2178) ([nlohmann](https://github.com/nlohmann))
+- Fix warnings [\#2174](https://github.com/nlohmann/json/pull/2174) ([nlohmann](https://github.com/nlohmann))
+- Fix PR\#1006 [\#2158](https://github.com/nlohmann/json/pull/2158) ([dota17](https://github.com/dota17))
+- Fix issue\#1972 [\#2153](https://github.com/nlohmann/json/pull/2153) ([dota17](https://github.com/dota17))
+- Update URLs to HTTPS [\#2152](https://github.com/nlohmann/json/pull/2152) ([TotalCaesar659](https://github.com/TotalCaesar659))
+- Fix Issue\#1813: user defined input adapters [\#2145](https://github.com/nlohmann/json/pull/2145) ([FrancoisChabot](https://github.com/FrancoisChabot))
+- Fix issue\#1939: Cast character to unsigned for comparison [\#2144](https://github.com/nlohmann/json/pull/2144) ([XyFreak](https://github.com/XyFreak))
+- Fix issue\#2142: readme: fix typo in CMake FetchContent example [\#2143](https://github.com/nlohmann/json/pull/2143) ([quentin-dev](https://github.com/quentin-dev))
+- Respect allow\_exceptions=false for binary formats [\#2140](https://github.com/nlohmann/json/pull/2140) ([nlohmann](https://github.com/nlohmann))
+- Fix issue 2112 [\#2137](https://github.com/nlohmann/json/pull/2137) ([dota17](https://github.com/dota17))
+- Add bleeding edge GCC to CI [\#2136](https://github.com/nlohmann/json/pull/2136) ([aokellermann](https://github.com/aokellermann))
+- Clean up implementation of binary type [\#2125](https://github.com/nlohmann/json/pull/2125) ([nlohmann](https://github.com/nlohmann))
+- Fixed a compilation error in MSVC [\#2121](https://github.com/nlohmann/json/pull/2121) ([gistrec](https://github.com/gistrec))
+- Overwork CI [\#2119](https://github.com/nlohmann/json/pull/2119) ([nlohmann](https://github.com/nlohmann))
+- Fix warnings from Clang 10 and GCC 9 [\#2116](https://github.com/nlohmann/json/pull/2116) ([nlohmann](https://github.com/nlohmann))
+- Do not include \<ciso646\> when using C++17 [\#2115](https://github.com/nlohmann/json/pull/2115) ([nlohmann](https://github.com/nlohmann))
+- Fix issue\#2086: disallow json::value\_t type parameter in value\(\) [\#2104](https://github.com/nlohmann/json/pull/2104) ([dota17](https://github.com/dota17))
+- Fix Coveralls integration [\#2100](https://github.com/nlohmann/json/pull/2100) ([nlohmann](https://github.com/nlohmann))
+- Add tests for binary values [\#2099](https://github.com/nlohmann/json/pull/2099) ([nlohmann](https://github.com/nlohmann))
+- Use external test data [\#2081](https://github.com/nlohmann/json/pull/2081) ([nlohmann](https://github.com/nlohmann))
+- Remove Doozer CI [\#2080](https://github.com/nlohmann/json/pull/2080) ([nlohmann](https://github.com/nlohmann))
+- Fix README.md. Missing ``` [\#2077](https://github.com/nlohmann/json/pull/2077) ([ArthurSonzogni](https://github.com/ArthurSonzogni))
+- Fix error message about invalid surrogate pairs [\#2076](https://github.com/nlohmann/json/pull/2076) ([rmisev](https://github.com/rmisev))
+- Add CMake fetchcontent documentation and tests [\#2074](https://github.com/nlohmann/json/pull/2074) ([ArthurSonzogni](https://github.com/ArthurSonzogni))
+- Properly pass serialize\_binary to dump function [\#2071](https://github.com/nlohmann/json/pull/2071) ([nlohmann](https://github.com/nlohmann))
+- Fix returning reference to local temporary object [\#2069](https://github.com/nlohmann/json/pull/2069) ([nlohmann](https://github.com/nlohmann))
+- updated wandbox link [\#2060](https://github.com/nlohmann/json/pull/2060) ([alexandermyasnikov](https://github.com/alexandermyasnikov))
+- Fix bug in diff function [\#2054](https://github.com/nlohmann/json/pull/2054) ([nlohmann](https://github.com/nlohmann))
+- Fix GCC compiler warnings [\#2053](https://github.com/nlohmann/json/pull/2053) ([nlohmann](https://github.com/nlohmann))
+- Fix Clang compiler warnings [\#2051](https://github.com/nlohmann/json/pull/2051) ([nlohmann](https://github.com/nlohmann))
+- Update doctest to 2.3.7 [\#2050](https://github.com/nlohmann/json/pull/2050) ([nlohmann](https://github.com/nlohmann))
+- Fix issue\#1719 [\#2044](https://github.com/nlohmann/json/pull/2044) ([dota17](https://github.com/dota17))
+- Add missing testcase about NaN in unit-constructor1.cpp [\#2043](https://github.com/nlohmann/json/pull/2043) ([dota17](https://github.com/dota17))
+- Templatize basic\_json constructor from json\_ref [\#2034](https://github.com/nlohmann/json/pull/2034) ([ArtemSarmini](https://github.com/ArtemSarmini))
+- Replace deprecated std::is\_pod [\#2033](https://github.com/nlohmann/json/pull/2033) ([nlohmann](https://github.com/nlohmann))
+- Fixes \#1971 \(memory leak in basic\_json::push\_back\) [\#2025](https://github.com/nlohmann/json/pull/2025) ([ArtemSarmini](https://github.com/ArtemSarmini))
+- fix \#1982:json\_pointer.contains\(\) exception is incorrectly raised [\#2019](https://github.com/nlohmann/json/pull/2019) ([dota17](https://github.com/dota17))
+- Update LICENSE.MIT [\#2010](https://github.com/nlohmann/json/pull/2010) ([magamig](https://github.com/magamig))
+- PR for \#2006 to test in AppVeyor. [\#2008](https://github.com/nlohmann/json/pull/2008) ([garethsb](https://github.com/garethsb))
+- Added wsjcpp.yml [\#2004](https://github.com/nlohmann/json/pull/2004) ([sea-kg](https://github.com/sea-kg))
+- fix error 'setw' is not a member of 'std' in Wandbox example [\#2002](https://github.com/nlohmann/json/pull/2002) ([alexandermyasnikov](https://github.com/alexandermyasnikov))
+- catch exceptions for json\_pointer : ..../+99 [\#1990](https://github.com/nlohmann/json/pull/1990) ([dota17](https://github.com/dota17))
+- Modify the document about operator== [\#1984](https://github.com/nlohmann/json/pull/1984) ([dota17](https://github.com/dota17))
+- Rename argument array\_index to array\_indx in json\_pointer methods [\#1980](https://github.com/nlohmann/json/pull/1980) ([linev](https://github.com/linev))
+- README: Fix string representation of `dump`ed `json` [\#1979](https://github.com/nlohmann/json/pull/1979) ([alexweej](https://github.com/alexweej))
+- fix warnings in serializer.hpp for VS2019 [\#1969](https://github.com/nlohmann/json/pull/1969) ([dota17](https://github.com/dota17))
+- Fix C26451 warnnings in to\_chars.hpp [\#1967](https://github.com/nlohmann/json/pull/1967) ([dota17](https://github.com/dota17))
+- appveyor.yml: Compile and test with latest version for \_\_cplusplus ma… [\#1958](https://github.com/nlohmann/json/pull/1958) ([t-b](https://github.com/t-b))
+- Fix typo in examples [\#1956](https://github.com/nlohmann/json/pull/1956) ([dota17](https://github.com/dota17))
+- templated input adapters [\#1950](https://github.com/nlohmann/json/pull/1950) ([FrancoisChabot](https://github.com/FrancoisChabot))
+- Update README.md : add a FAQ about memory release [\#1933](https://github.com/nlohmann/json/pull/1933) ([dota17](https://github.com/dota17))
+- Some typos [\#1923](https://github.com/nlohmann/json/pull/1923) ([Coeur](https://github.com/Coeur))
+- Fix link to parse function in README [\#1918](https://github.com/nlohmann/json/pull/1918) ([kastiglione](https://github.com/kastiglione))
+- Readme: Updated links to hunter repo & docs [\#1917](https://github.com/nlohmann/json/pull/1917) ([jothepro](https://github.com/jothepro))
+- Adds instruction for using Build2's package manager [\#1909](https://github.com/nlohmann/json/pull/1909) ([Klaim](https://github.com/Klaim))
+- Update README.md [\#1907](https://github.com/nlohmann/json/pull/1907) ([pauljurczak](https://github.com/pauljurczak))
+- Fix warning: ignoring return value [\#1871](https://github.com/nlohmann/json/pull/1871) ([sonulohani](https://github.com/sonulohani))
+- docs: add central repository as conan source to readme [\#1857](https://github.com/nlohmann/json/pull/1857) ([gocarlos](https://github.com/gocarlos))
+- README: Package in MSYS2 renamed to nlohmann-json [\#1853](https://github.com/nlohmann/json/pull/1853) ([podsvirov](https://github.com/podsvirov))
+- Fix msvc warnings [\#1846](https://github.com/nlohmann/json/pull/1846) ([MBalszun](https://github.com/MBalszun))
+- Update tests that generate CMake projects to use main project's C++ compiler [\#1844](https://github.com/nlohmann/json/pull/1844) ([Tridacnid](https://github.com/Tridacnid))
+- make CMake's version config file architecture-independent [\#1746](https://github.com/nlohmann/json/pull/1746) ([uhoreg](https://github.com/uhoreg))
+- Add binary type support to all binary file formats, as well as an internally represented binary type [\#1662](https://github.com/nlohmann/json/pull/1662) ([OmnipotentEntity](https://github.com/OmnipotentEntity))
+
+## [v3.7.3](https://github.com/nlohmann/json/releases/tag/v3.7.3) (2019-11-17)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.7.2...v3.7.3)
+
+- Project branches [\#1839](https://github.com/nlohmann/json/issues/1839)
+- Quadratic destruction complexity introduced in \#1436 [\#1837](https://github.com/nlohmann/json/issues/1837)
+- Trying to open a file [\#1814](https://github.com/nlohmann/json/issues/1814)
+- Comparing data type with value\_t::number\_integer fails [\#1783](https://github.com/nlohmann/json/issues/1783)
+- CMake version config file is architecture-dependent [\#1697](https://github.com/nlohmann/json/issues/1697)
+
+- Fix quadratic destruction complexity [\#1838](https://github.com/nlohmann/json/pull/1838) ([nickaein](https://github.com/nickaein))
+
+## [v3.7.2](https://github.com/nlohmann/json/releases/tag/v3.7.2) (2019-11-10)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.7.1...v3.7.2)
+
+- Segmentation fault in destructor in case of large inputs [\#1835](https://github.com/nlohmann/json/issues/1835)
+- type\_name\(\) is not consistent with type\(\) [\#1833](https://github.com/nlohmann/json/issues/1833)
+- json::parse is not a member [\#1832](https://github.com/nlohmann/json/issues/1832)
+- How do you deal with json\* ? [\#1829](https://github.com/nlohmann/json/issues/1829)
+- Combined find\_package/add\_subdirectory not linking libraries [\#1771](https://github.com/nlohmann/json/issues/1771)
+- example code for ifstream reading a json file results in no operator error [\#1766](https://github.com/nlohmann/json/issues/1766)
+- Warning: unsequenced modification and access to 'range' [\#1674](https://github.com/nlohmann/json/issues/1674)
+- Segmentation fault \(stack overflow\) due to unbounded recursion [\#1419](https://github.com/nlohmann/json/issues/1419)
+- Stack-overflow \(OSS-Fuzz 4234\) [\#832](https://github.com/nlohmann/json/issues/832)
+
+- Configure WhiteSource Bolt for GitHub [\#1830](https://github.com/nlohmann/json/pull/1830) ([mend-bolt-for-github[bot]](https://github.com/apps/mend-bolt-for-github))
+- Prevent stackoverflow caused by recursive deconstruction [\#1436](https://github.com/nlohmann/json/pull/1436) ([nickaein](https://github.com/nickaein))
+
+## [v3.7.1](https://github.com/nlohmann/json/releases/tag/v3.7.1) (2019-11-06)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.7.0...v3.7.1)
+
+- std::is\_constructible is always true with tuple [\#1825](https://github.com/nlohmann/json/issues/1825)
+- Can't compile from\_json\(std::valarray\<T\>\). [\#1824](https://github.com/nlohmann/json/issues/1824)
+- json class should have a get\_or member function [\#1823](https://github.com/nlohmann/json/issues/1823)
+- NLOHMANN\_JSON\_SERIALIZE\_ENUM macro capture's json objects by value [\#1822](https://github.com/nlohmann/json/issues/1822)
+- Parse fails when number literals start with zero [\#1820](https://github.com/nlohmann/json/issues/1820)
+- Weird behaviour of `contains` with `json_pointer` [\#1815](https://github.com/nlohmann/json/issues/1815)
+- strange behaviour with json\_pointer and .contains\(\) [\#1811](https://github.com/nlohmann/json/issues/1811)
+- Can \#1695 be re-opened? [\#1808](https://github.com/nlohmann/json/issues/1808)
+- Merge two json objects [\#1807](https://github.com/nlohmann/json/issues/1807)
+- std::is\_constructible\<json, std::unordered\_map\<std::string, Data\>\> when to\_json not defined [\#1805](https://github.com/nlohmann/json/issues/1805)
+- Private data on parsing [\#1802](https://github.com/nlohmann/json/issues/1802)
+- Capturing Line and Position when querying [\#1800](https://github.com/nlohmann/json/issues/1800)
+- json error on parsing DBL\_MAX from string [\#1796](https://github.com/nlohmann/json/issues/1796)
+- De/Serialisation of vector of tupple object with nested obect need Help please [\#1794](https://github.com/nlohmann/json/issues/1794)
+- Output json is corrupted [\#1793](https://github.com/nlohmann/json/issues/1793)
+- variable name byte sometimes used as a \#define [\#1792](https://github.com/nlohmann/json/issues/1792)
+- Can't read json file [\#1791](https://github.com/nlohmann/json/issues/1791)
+- Problems with special German letters [\#1789](https://github.com/nlohmann/json/issues/1789)
+- Support for trailing commas [\#1787](https://github.com/nlohmann/json/issues/1787)
+- json\_pointer construction bug [\#1786](https://github.com/nlohmann/json/issues/1786)
+- Visual Studio 2017 warning [\#1784](https://github.com/nlohmann/json/issues/1784)
+- ciso646 header become obsolete [\#1782](https://github.com/nlohmann/json/issues/1782)
+- Migrate LGTM.com installation from OAuth to GitHub App [\#1781](https://github.com/nlohmann/json/issues/1781)
+- JSON comparison, contains and operator& [\#1778](https://github.com/nlohmann/json/issues/1778)
+- pass a json object to a class contructor adds an array around the object [\#1776](https://github.com/nlohmann/json/issues/1776)
+- 'Float' number\_float\_function\_t template parameter name conflicts with C '\#define Float float' [\#1775](https://github.com/nlohmann/json/issues/1775)
+- A weird building problem :-\( [\#1774](https://github.com/nlohmann/json/issues/1774)
+- What is this json\_ref? [\#1772](https://github.com/nlohmann/json/issues/1772)
+- Interoperability with other languages [\#1770](https://github.com/nlohmann/json/issues/1770)
+- Json dump [\#1768](https://github.com/nlohmann/json/issues/1768)
+- json\_pointer\<\>::back\(\) should be const [\#1764](https://github.com/nlohmann/json/issues/1764)
+- How to get value from array [\#1762](https://github.com/nlohmann/json/issues/1762)
+- Merge two jsons [\#1757](https://github.com/nlohmann/json/issues/1757)
+- Unable to locate nlohmann\_jsonConfig.cmake [\#1755](https://github.com/nlohmann/json/issues/1755)
+- json.hpp won;t compile VS2019 CLR/CLI app but does in console app [\#1754](https://github.com/nlohmann/json/issues/1754)
+- \[Nested Json Objects\] Segmentation fault [\#1753](https://github.com/nlohmann/json/issues/1753)
+- remove/replace assert with exceptions [\#1752](https://github.com/nlohmann/json/issues/1752)
+- Add array support for update\(\) function [\#1751](https://github.com/nlohmann/json/issues/1751)
+- Is there a reason the `get_to` method is defined in `include/nlohmann/json.hpp` but not in `single_include/nlohmann/json.hpp`? [\#1750](https://github.com/nlohmann/json/issues/1750)
+- how to validate json object before calling dump\(\) [\#1748](https://github.com/nlohmann/json/issues/1748)
+- Unable to invoke accessors on json objects in lldb [\#1745](https://github.com/nlohmann/json/issues/1745)
+- Escaping string before parsing [\#1743](https://github.com/nlohmann/json/issues/1743)
+- Construction in a member initializer list using curly braces is set as 'array' [\#1742](https://github.com/nlohmann/json/issues/1742)
+- Read a subkey from json object [\#1740](https://github.com/nlohmann/json/issues/1740)
+- Serialize vector of glm:vec2 [\#1739](https://github.com/nlohmann/json/issues/1739)
+- Support nlohmann::basic\_json::value with JSON\_NOEXCEPTION [\#1738](https://github.com/nlohmann/json/issues/1738)
+- how to know the parse is error [\#1737](https://github.com/nlohmann/json/issues/1737)
+- How to check if a given key exists in a JSON object [\#1736](https://github.com/nlohmann/json/issues/1736)
+- Allow The Colon Key-Value Delimiter To Have A Space Before It \[@ READ ONLY\] [\#1735](https://github.com/nlohmann/json/issues/1735)
+- Allow Tail { "Key": "Value" } Comma \[@ READ ONLY\] [\#1734](https://github.com/nlohmann/json/issues/1734)
+- No-throw json::value\(\) [\#1733](https://github.com/nlohmann/json/issues/1733)
+- JsonObject.dump\(\)  [\#1732](https://github.com/nlohmann/json/issues/1732)
+- basic\_json has no member "parse" [\#1731](https://github.com/nlohmann/json/issues/1731)
+- Exception "type must be string, but is array" [\#1730](https://github.com/nlohmann/json/issues/1730)
+- json::contains usage to find a path [\#1727](https://github.com/nlohmann/json/issues/1727)
+- How to create JSON Object from my Structures of Data and Json File from that Object [\#1726](https://github.com/nlohmann/json/issues/1726)
+- please provide an API to read JSON from file directly. [\#1725](https://github.com/nlohmann/json/issues/1725)
+- How to modify a value stored at a key? [\#1723](https://github.com/nlohmann/json/issues/1723)
+- CMake not correctly finding the configuration package for 3.7.0  [\#1721](https://github.com/nlohmann/json/issues/1721)
+- name typo in the "spack package management" section of README.md [\#1720](https://github.com/nlohmann/json/issues/1720)
+- How to add json to another json? [\#1718](https://github.com/nlohmann/json/issues/1718)
+- json::parse\(\) ubsan regression with v3.7.0 [\#1716](https://github.com/nlohmann/json/issues/1716)
+- What I am doing wrong?!? [\#1714](https://github.com/nlohmann/json/issues/1714)
+- Potential memory leak detected by Valgrind [\#1713](https://github.com/nlohmann/json/issues/1713)
+- json::parse is not thread safe? [\#1712](https://github.com/nlohmann/json/issues/1712)
+- static analysis alarm by cppcheck [\#1711](https://github.com/nlohmann/json/issues/1711)
+- The compilation time is slow [\#1710](https://github.com/nlohmann/json/issues/1710)
+- not linking properly with cmake [\#1709](https://github.com/nlohmann/json/issues/1709)
+- Error in dump\(\) with int64\_t minimum value [\#1708](https://github.com/nlohmann/json/issues/1708)
+- Crash on trying to deserialize json string on 3ds homebrew [\#1707](https://github.com/nlohmann/json/issues/1707)
+- Can't compile VS2019. 13 Errors  [\#1706](https://github.com/nlohmann/json/issues/1706)
+- find an object that matches the search criteria [\#1705](https://github.com/nlohmann/json/issues/1705)
+- IntelliSense goes crazy on VS2019 [\#1704](https://github.com/nlohmann/json/issues/1704)
+- Installing on Ubuntu 16.04 [\#1703](https://github.com/nlohmann/json/issues/1703)
+- Where is json::parse now? [\#1702](https://github.com/nlohmann/json/issues/1702)
+- Forward header should't be amalgamated [\#1700](https://github.com/nlohmann/json/issues/1700)
+- Json support for Cmake version 2.8.12 [\#1699](https://github.com/nlohmann/json/issues/1699)
+- Intruisive scientific notation when using .dump\(\); [\#1698](https://github.com/nlohmann/json/issues/1698)
+- Is there support for automatic serialization/deserialization? [\#1696](https://github.com/nlohmann/json/issues/1696)
+- on MSVC dump\(\) will hard crash for larger json [\#1693](https://github.com/nlohmann/json/issues/1693)
+- puzzled implicit conversions [\#1692](https://github.com/nlohmann/json/issues/1692)
+- Information: My project uses this awesome library [\#1691](https://github.com/nlohmann/json/issues/1691)
+- Consider listing files explicitly instead of using GLOB [\#1686](https://github.com/nlohmann/json/issues/1686)
+- Failing tests on MSVC with VS2019 15.9.13 x64 [\#1685](https://github.com/nlohmann/json/issues/1685)
+- Change from v2 to v3. Encoding with cp1252 [\#1680](https://github.com/nlohmann/json/issues/1680)
+- How to add Fifo\_map into json using Cmake [\#1679](https://github.com/nlohmann/json/issues/1679)
+- include.zip should contain meson.build [\#1672](https://github.com/nlohmann/json/issues/1672)
+- \[Question\] How do I parse JSON into custom types? [\#1669](https://github.com/nlohmann/json/issues/1669)
+- Binary \(0x05\) data type for BSON to JSON conversion [\#1668](https://github.com/nlohmann/json/issues/1668)
+- Possible to call dump from lldb? [\#1666](https://github.com/nlohmann/json/issues/1666)
+- Segmentation fault when linked with libunwind [\#1665](https://github.com/nlohmann/json/issues/1665)
+- Should I include single-header after my to\_json and from\_json custom functions declaration? Why not? [\#1663](https://github.com/nlohmann/json/issues/1663)
+- Errors/Warnings in VS 2019 when Including Header File [\#1659](https://github.com/nlohmann/json/issues/1659)
+- Return null object from object's const operator\[\] as well. [\#1658](https://github.com/nlohmann/json/issues/1658)
+- Can't stream json object in to std::basic\_stringstream\<wchar\_t\> [\#1656](https://github.com/nlohmann/json/issues/1656)
+- C2440 in vs2015 cannot convert from 'initializer-list' to nlohmann::basic\_json [\#1655](https://github.com/nlohmann/json/issues/1655)
+- Issues around get and pointers [\#1653](https://github.com/nlohmann/json/issues/1653)
+- Non-member operator== breaks enum \(de\)serialization [\#1647](https://github.com/nlohmann/json/issues/1647)
+- Valgrind: bytes in 1 blocks are definitely lost [\#1646](https://github.com/nlohmann/json/issues/1646)
+- Convenient way to make 'basic\_json' accept 'QString' as an key type as well? [\#1640](https://github.com/nlohmann/json/issues/1640)
+- mongodb: nan, inf [\#1599](https://github.com/nlohmann/json/issues/1599)
+- Error in adl\_serializer [\#1590](https://github.com/nlohmann/json/issues/1590)
+- Injecting class during serialization [\#1584](https://github.com/nlohmann/json/issues/1584)
+- output\_adapter not user extensible [\#1534](https://github.com/nlohmann/json/issues/1534)
+- Inclusion of nlohmann/json.hpp causes OS/ABI to change on Linux [\#1410](https://github.com/nlohmann/json/issues/1410)
+- Add library versioning using inline namespaces [\#1394](https://github.com/nlohmann/json/issues/1394)
+- CBOR byte string support [\#1129](https://github.com/nlohmann/json/issues/1129)
+- How to deserialize array with derived objects [\#716](https://github.com/nlohmann/json/issues/716)
+
+- Add restriction for tuple specialization of to\_json [\#1826](https://github.com/nlohmann/json/pull/1826) ([cbegue](https://github.com/cbegue))
+- Fix for \#1647 [\#1821](https://github.com/nlohmann/json/pull/1821) ([AnthonyVH](https://github.com/AnthonyVH))
+- Fix issue \#1805 [\#1806](https://github.com/nlohmann/json/pull/1806) ([cbegue](https://github.com/cbegue))
+- Fix some spelling errors - mostly in comments & documentation. [\#1803](https://github.com/nlohmann/json/pull/1803) ([flopp](https://github.com/flopp))
+- Update Hedley to v11. [\#1799](https://github.com/nlohmann/json/pull/1799) ([nemequ](https://github.com/nemequ))
+- iteration\_proxy: Fix integer truncation from std::size\_t to int [\#1797](https://github.com/nlohmann/json/pull/1797) ([t-b](https://github.com/t-b))
+- appveyor.yml: Add MSVC 16 2019 support [\#1780](https://github.com/nlohmann/json/pull/1780) ([t-b](https://github.com/t-b))
+- test/CMakeLists.txt: Use an explicit list instead of GLOB [\#1779](https://github.com/nlohmann/json/pull/1779) ([t-b](https://github.com/t-b))
+- Make json\_pointer::back const \(resolves \#1764\) [\#1769](https://github.com/nlohmann/json/pull/1769) ([chris0x44](https://github.com/chris0x44))
+- did you mean 'serialization'? [\#1767](https://github.com/nlohmann/json/pull/1767) ([0xflotus](https://github.com/0xflotus))
+- Allow items\(\) to be used with custom string [\#1765](https://github.com/nlohmann/json/pull/1765) ([crazyjul](https://github.com/crazyjul))
+- Cppcheck fixes [\#1760](https://github.com/nlohmann/json/pull/1760) ([Xav83](https://github.com/Xav83))
+- Fix and add test's for SFINAE problem [\#1741](https://github.com/nlohmann/json/pull/1741) ([tete17](https://github.com/tete17))
+- Fix clang sanitizer invocation [\#1728](https://github.com/nlohmann/json/pull/1728) ([t-b](https://github.com/t-b))
+- Add gcc 9 and compile with experimental C++20 support [\#1724](https://github.com/nlohmann/json/pull/1724) ([t-b](https://github.com/t-b))
+- Fix int64 min issue [\#1722](https://github.com/nlohmann/json/pull/1722) ([t-b](https://github.com/t-b))
+- release: add singleinclude and meson.build to include.zip [\#1694](https://github.com/nlohmann/json/pull/1694) ([eli-schwartz](https://github.com/eli-schwartz))
+
+## [v3.7.0](https://github.com/nlohmann/json/releases/tag/v3.7.0) (2019-07-28)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.6.1...v3.7.0)
+
+- How can I retrieve uknown strings from json file in my C++ program. [\#1684](https://github.com/nlohmann/json/issues/1684)
+- contains\(\) is sometimes causing stack-based buffer overrun exceptions [\#1683](https://github.com/nlohmann/json/issues/1683)
+- How to deserialize arrays  from json [\#1681](https://github.com/nlohmann/json/issues/1681)
+- Compilation failed in VS2015 [\#1678](https://github.com/nlohmann/json/issues/1678)
+- Why the compiled object file is so huge? [\#1677](https://github.com/nlohmann/json/issues/1677)
+- From Version 2.1.1 to 3.6.1 serialize std::set [\#1676](https://github.com/nlohmann/json/issues/1676)
+- Qt deprecation model halting compiltion [\#1675](https://github.com/nlohmann/json/issues/1675)
+-  Build For Raspberry pi , Rapbery with new Compiler C++17 [\#1671](https://github.com/nlohmann/json/issues/1671)
+- Build from Raspberry pi [\#1667](https://github.com/nlohmann/json/issues/1667)
+- Can not translate map with integer key to dict string ?  [\#1664](https://github.com/nlohmann/json/issues/1664)
+- Double type converts to scientific notation [\#1661](https://github.com/nlohmann/json/issues/1661)
+- Missing v3.6.1 tag on master branch [\#1657](https://github.com/nlohmann/json/issues/1657)
+- Support Fleese Binary Data Format [\#1654](https://github.com/nlohmann/json/issues/1654)
+- Suggestion: replace alternative tokens for !, && and || with their symbols [\#1652](https://github.com/nlohmann/json/issues/1652)
+- Build failure test-allocator.vcxproj [\#1651](https://github.com/nlohmann/json/issues/1651)
+- How to provide function json& to\_json\(\) which is similar as 'void to\_json\(json&j, const CObject& obj\)'  ? [\#1650](https://github.com/nlohmann/json/issues/1650)
+- Can't throw exception when starting file is a number [\#1649](https://github.com/nlohmann/json/issues/1649)
+- to\_json / from\_json with nested type [\#1648](https://github.com/nlohmann/json/issues/1648)
+- How to create a json object from a std::string, created by j.dump? [\#1645](https://github.com/nlohmann/json/issues/1645)
+- Problem getting vector \(array\) of strings [\#1644](https://github.com/nlohmann/json/issues/1644)
+- json.hpp compilation issue with other typedefs with same name [\#1642](https://github.com/nlohmann/json/issues/1642)
+- nlohmann::adl\_serializer\<T,void\>::to\_json no matching overloaded function found [\#1641](https://github.com/nlohmann/json/issues/1641)
+- overwrite adl\_serializer\<bool, void\> to change behaviour [\#1638](https://github.com/nlohmann/json/issues/1638)
+- json.SelectToken\("Manufacturers.Products.Price"\); [\#1637](https://github.com/nlohmann/json/issues/1637)
+- Add json type as value [\#1636](https://github.com/nlohmann/json/issues/1636)
+- Unit conversion test error: conversion from 'nlohmann::json' to non-scalar type 'std::string\_view' requested [\#1634](https://github.com/nlohmann/json/issues/1634)
+- nlohmann VS JsonCpp by C++17 [\#1633](https://github.com/nlohmann/json/issues/1633)
+- To integrate an inline helper function that return type name as string [\#1632](https://github.com/nlohmann/json/issues/1632)
+- Return JSON as reference [\#1631](https://github.com/nlohmann/json/issues/1631)
+- Updating from an older version causes problems with assing a json object to a struct [\#1630](https://github.com/nlohmann/json/issues/1630)
+- Can without default constructor function for user defined classes when only to\_json is needed? [\#1629](https://github.com/nlohmann/json/issues/1629)
+- Compilation fails with clang 6.x-8.x in C++14 mode [\#1628](https://github.com/nlohmann/json/issues/1628)
+- Treating floating point as string [\#1627](https://github.com/nlohmann/json/issues/1627)
+- error parsing character å [\#1626](https://github.com/nlohmann/json/issues/1626)
+- \[Help\] How to Improve Json Output Performance with Large Json Arrays [\#1624](https://github.com/nlohmann/json/issues/1624)
+- Suggested link changes for reporting new issues \[blob/develop/REAME.md and blob/develop/.github/CONTRIBUTING.md\] [\#1623](https://github.com/nlohmann/json/issues/1623)
+- Broken link to issue template in CONTRIBUTING.md [\#1622](https://github.com/nlohmann/json/issues/1622)
+- Missing word in README.md file  [\#1621](https://github.com/nlohmann/json/issues/1621)
+- Package manager instructions in README for brew is incorrect [\#1620](https://github.com/nlohmann/json/issues/1620)
+- Building with Visual Studio 2019 [\#1619](https://github.com/nlohmann/json/issues/1619)
+- Precedence of to\_json and builtin harmful [\#1617](https://github.com/nlohmann/json/issues/1617)
+- The type json is missing from the html documentation [\#1616](https://github.com/nlohmann/json/issues/1616)
+- variant is not support in Release 3.6.1? [\#1615](https://github.com/nlohmann/json/issues/1615)
+- Replace assert with throw for const operator\[\] [\#1614](https://github.com/nlohmann/json/issues/1614)
+- Memory Overhead is Too High \(10x or more\) [\#1613](https://github.com/nlohmann/json/issues/1613)
+- program crash everytime, when other data type incomming in json stream as expected [\#1612](https://github.com/nlohmann/json/issues/1612)
+- Improved Enum Support [\#1611](https://github.com/nlohmann/json/issues/1611)
+- is it possible convert json object back to stl container ? [\#1610](https://github.com/nlohmann/json/issues/1610)
+- Add C++17-like emplace.back\(\) for arrays. [\#1609](https://github.com/nlohmann/json/issues/1609)
+- is\_nothrow\_copy\_constructible fails for json::const\_iterator on MSVC2015 x86 Debug build [\#1608](https://github.com/nlohmann/json/issues/1608)
+- Reading and writing array elements [\#1607](https://github.com/nlohmann/json/issues/1607)
+- Converting json::value to int [\#1605](https://github.com/nlohmann/json/issues/1605)
+- I have a vector of keys and and a string of value and i want to create nested json array [\#1604](https://github.com/nlohmann/json/issues/1604)
+- In compatible JSON object from nlohmann::json to nohman::json - unexpected end of input; expected '\[', '{', or a literal [\#1603](https://github.com/nlohmann/json/issues/1603)
+- json parser crash if having a large number integer in message  [\#1602](https://github.com/nlohmann/json/issues/1602)
+- Value method with undocumented throwing 302 exception [\#1601](https://github.com/nlohmann/json/issues/1601)
+- Accessing value with json pointer adds key if not existing [\#1600](https://github.com/nlohmann/json/issues/1600)
+- README.md broken link to project documentation [\#1597](https://github.com/nlohmann/json/issues/1597)
+- Random Kudos: Thanks for your work on this! [\#1596](https://github.com/nlohmann/json/issues/1596)
+- json::parse return value and errors [\#1595](https://github.com/nlohmann/json/issues/1595)
+- initializer list constructor makes curly brace initialization fragile [\#1594](https://github.com/nlohmann/json/issues/1594)
+- trying to log message for missing keyword, difference between \["foo"\] and at\("foo"\) [\#1593](https://github.com/nlohmann/json/issues/1593)
+- std::string and std::wstring `to_json`  [\#1592](https://github.com/nlohmann/json/issues/1592)
+- I have a C structure which I need to convert to a JSON. How do I do it? Haven't found proper examples so far. [\#1591](https://github.com/nlohmann/json/issues/1591)
+- dump\_escaped possible error ? [\#1589](https://github.com/nlohmann/json/issues/1589)
+- json::parse\(\) into a vector\<string\> results in unhandled exception [\#1587](https://github.com/nlohmann/json/issues/1587)
+- push\_back\(\)/emplace\_back\(\) on array invalidates pointers to existing array items [\#1586](https://github.com/nlohmann/json/issues/1586)
+- Getting nlohmann::detail::parse\_error on JSON generated by nlohmann::json not sure why [\#1583](https://github.com/nlohmann/json/issues/1583)
+- getting error terminate called after throwing an instance of 'std::domain\_error'   what\(\):  cannot use at\(\) with string [\#1582](https://github.com/nlohmann/json/issues/1582)
+- how i create json file  [\#1581](https://github.com/nlohmann/json/issues/1581)
+- prevent rounding of double datatype values [\#1580](https://github.com/nlohmann/json/issues/1580)
+- Documentation Container Overview Doesn't Reference Const Methods [\#1579](https://github.com/nlohmann/json/issues/1579)
+- Writing an array into a nlohmann::json object [\#1578](https://github.com/nlohmann/json/issues/1578)
+- compilation error when using with another library [\#1577](https://github.com/nlohmann/json/issues/1577)
+- Homebrew on OSX doesn't install cmake config file [\#1576](https://github.com/nlohmann/json/issues/1576)
+- JSON Parse Out of Range Error [\#1574](https://github.com/nlohmann/json/issues/1574)
+- Integrating into existing CMake Project [\#1573](https://github.com/nlohmann/json/issues/1573)
+- conversion to std::string failed [\#1571](https://github.com/nlohmann/json/issues/1571)
+- jPtr operation does not throw [\#1569](https://github.com/nlohmann/json/issues/1569)
+- How to generate dll file for this project [\#1568](https://github.com/nlohmann/json/issues/1568)
+- how to pass variable data to json in c [\#1567](https://github.com/nlohmann/json/issues/1567)
+- I want to achieve an upgraded function. [\#1566](https://github.com/nlohmann/json/issues/1566)
+- How to determine the type of elements read from a JSON array? [\#1564](https://github.com/nlohmann/json/issues/1564)
+- try\_get\_to [\#1563](https://github.com/nlohmann/json/issues/1563)
+- example code  compile error [\#1562](https://github.com/nlohmann/json/issues/1562)
+- How to iterate over nested json object [\#1561](https://github.com/nlohmann/json/issues/1561)
+- Build Option/Separate Function to Allow to Throw on Duplicate Keys [\#1560](https://github.com/nlohmann/json/issues/1560)
+- Compiler Switches -Weffc++ & -Wshadow are throwing errors [\#1558](https://github.com/nlohmann/json/issues/1558)
+- warning: use of the 'nodiscard' attribute is a C++17 extension [\#1557](https://github.com/nlohmann/json/issues/1557)
+- Import/Export compressed JSON files [\#1556](https://github.com/nlohmann/json/issues/1556)
+- GDB renderers for json library [\#1554](https://github.com/nlohmann/json/issues/1554)
+- Is it possible to construct a json string object from a binary buffer? [\#1553](https://github.com/nlohmann/json/issues/1553)
+- json objects in list [\#1552](https://github.com/nlohmann/json/issues/1552)
+- Matrix output [\#1550](https://github.com/nlohmann/json/issues/1550)
+- Using json merge\_patch on ordered non-alphanumeric datasets [\#1549](https://github.com/nlohmann/json/issues/1549)
+- Invalid parsed value for big integer [\#1548](https://github.com/nlohmann/json/issues/1548)
+- Integrating with android ndk issues. [\#1547](https://github.com/nlohmann/json/issues/1547)
+- add noexcept json::value\("key", default\) method variant? [\#1546](https://github.com/nlohmann/json/issues/1546)
+- Thank you! 🙌 [\#1545](https://github.com/nlohmann/json/issues/1545)
+- Output and input matrix [\#1544](https://github.com/nlohmann/json/issues/1544)
+- Add regression tests for MSVC [\#1543](https://github.com/nlohmann/json/issues/1543)
+- \[Help Needed!\] Season of Docs [\#1542](https://github.com/nlohmann/json/issues/1542)
+- program still abort\(\) or exit\(\) with try catch [\#1541](https://github.com/nlohmann/json/issues/1541)
+- Have a json::type\_error exception because of JSON object [\#1540](https://github.com/nlohmann/json/issues/1540)
+- Quoted numbers [\#1538](https://github.com/nlohmann/json/issues/1538)
+- Reading a JSON file into an object [\#1537](https://github.com/nlohmann/json/issues/1537)
+- Releases 3.6.0 and 3.6.1 don't build on conda / windows [\#1536](https://github.com/nlohmann/json/issues/1536)
+- \[Clang\] warning: use of the 'nodiscard' attribute is a C++17 extension \[-Wc++17-extensions\] [\#1535](https://github.com/nlohmann/json/issues/1535)
+- wchar\_t/std::wstring json can be created but not accessed [\#1533](https://github.com/nlohmann/json/issues/1533)
+- json stringify [\#1532](https://github.com/nlohmann/json/issues/1532)
+- How can I use it from gcc on RPI [\#1528](https://github.com/nlohmann/json/issues/1528)
+- std::pair treated as an array instead of key-value in `std::vector<std::pair<>>` [\#1520](https://github.com/nlohmann/json/issues/1520)
+- Excessive Memory Usage for Large Json File [\#1516](https://github.com/nlohmann/json/issues/1516)
+- SAX dumper [\#1512](https://github.com/nlohmann/json/issues/1512)
+- Conversion to user type containing a std::vector not working with documented approach [\#1511](https://github.com/nlohmann/json/issues/1511)
+- Inconsistent use of type alias. [\#1507](https://github.com/nlohmann/json/issues/1507)
+- Is there a current way to represent strings as json int? [\#1503](https://github.com/nlohmann/json/issues/1503)
+- Intermittent issues with loadJSON [\#1484](https://github.com/nlohmann/json/issues/1484)
+- use json construct std::string [\#1462](https://github.com/nlohmann/json/issues/1462)
+- JSON Creation [\#1461](https://github.com/nlohmann/json/issues/1461)
+- Null bytes in files are treated like EOF [\#1095](https://github.com/nlohmann/json/issues/1095)
+- Feature: to\_string\(const json& j\); [\#916](https://github.com/nlohmann/json/issues/916)
+
+- Use GNUInstallDirs instead of hard-coded path. [\#1673](https://github.com/nlohmann/json/pull/1673) ([ghost](https://github.com/ghost))
+- Package Manager: MSYS2 \(pacman\) [\#1670](https://github.com/nlohmann/json/pull/1670) ([podsvirov](https://github.com/podsvirov))
+- Fix json.hpp compilation issue with other typedefs with same name \(Issue \#1642\) [\#1643](https://github.com/nlohmann/json/pull/1643) ([kevinlul](https://github.com/kevinlul))
+- Add explicit conversion from json to std::string\_view in conversion unit test [\#1639](https://github.com/nlohmann/json/pull/1639) ([taylorhoward92](https://github.com/taylorhoward92))
+- Minor fixes in docs [\#1625](https://github.com/nlohmann/json/pull/1625) ([nickaein](https://github.com/nickaein))
+- Fix broken links to documentation [\#1598](https://github.com/nlohmann/json/pull/1598) ([nickaein](https://github.com/nickaein))
+- Added to\_string and added basic tests [\#1585](https://github.com/nlohmann/json/pull/1585) ([Macr0Nerd](https://github.com/Macr0Nerd))
+- Regression tests for MSVC [\#1570](https://github.com/nlohmann/json/pull/1570) ([nickaein](https://github.com/nickaein))
+- Fix/1511 [\#1555](https://github.com/nlohmann/json/pull/1555) ([theodelrieu](https://github.com/theodelrieu))
+- Remove C++17 extension warning from clang; \#1535 [\#1551](https://github.com/nlohmann/json/pull/1551) ([heavywatal](https://github.com/heavywatal))
+- moved from Catch to doctest for unit tests [\#1439](https://github.com/nlohmann/json/pull/1439) ([onqtam](https://github.com/onqtam))
+
+## [v3.6.1](https://github.com/nlohmann/json/releases/tag/v3.6.1) (2019-03-20)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/3.6.1...v3.6.1)
+
+## [3.6.1](https://github.com/nlohmann/json/releases/tag/3.6.1) (2019-03-20)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.6.0...3.6.1)
+
+- Failed to build with \<Windows.h\> [\#1531](https://github.com/nlohmann/json/issues/1531)
+- Compiling 3.6.0 with GCC \> 7, array vs std::array \#590 is back [\#1530](https://github.com/nlohmann/json/issues/1530)
+- 3.6.0: warning: missing initializer for member 'std::array\<char, 9ul\>::\_M\_elems' \[-Wmissing-field-initializers\] [\#1527](https://github.com/nlohmann/json/issues/1527)
+- unable to parse json  [\#1525](https://github.com/nlohmann/json/issues/1525)
+
+## [v3.6.0](https://github.com/nlohmann/json/releases/tag/v3.6.0) (2019-03-19)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.5.0...v3.6.0)
+
+- How can I turn a string of a json array into a json array? [\#1526](https://github.com/nlohmann/json/issues/1526)
+- Minor: missing a std:: namespace tag [\#1521](https://github.com/nlohmann/json/issues/1521)
+- how to precision to four decimal for double when use to\_json [\#1519](https://github.com/nlohmann/json/issues/1519)
+- error parse [\#1518](https://github.com/nlohmann/json/issues/1518)
+- Compile error: template argument deduction/substitution failed [\#1515](https://github.com/nlohmann/json/issues/1515)
+- std::complex type [\#1510](https://github.com/nlohmann/json/issues/1510)
+- CBOR byte string support [\#1509](https://github.com/nlohmann/json/issues/1509)
+- Compilation error getting a std::pair\<\> on latest VS 2017 compiler [\#1506](https://github.com/nlohmann/json/issues/1506)
+- "Integration" section of documentation needs update? [\#1505](https://github.com/nlohmann/json/issues/1505)
+- Json object from string from a TCP socket [\#1504](https://github.com/nlohmann/json/issues/1504)
+- MSVC warning C4946 \("reinterpret\_cast used between related classes"\) compiling json.hpp [\#1502](https://github.com/nlohmann/json/issues/1502)
+- How to programmatically fill an n-th dimensional JSON object? [\#1501](https://github.com/nlohmann/json/issues/1501)
+- Error compiling with clang and `JSON_NOEXCEPTION`: need to include `cstdlib` [\#1500](https://github.com/nlohmann/json/issues/1500)
+- The code compiles unsuccessfully with android-ndk-r10e [\#1499](https://github.com/nlohmann/json/issues/1499)
+- Cmake 3.1 in develop, when is it likely to make it into a stable release? [\#1498](https://github.com/nlohmann/json/issues/1498)
+- Some Help please object inside array [\#1494](https://github.com/nlohmann/json/issues/1494)
+- How to get data into vector of user-defined type from a Json object [\#1493](https://github.com/nlohmann/json/issues/1493)
+- how to find subelement  without loop [\#1490](https://github.com/nlohmann/json/issues/1490)
+- json to std::map [\#1487](https://github.com/nlohmann/json/issues/1487)
+- Type in README.md [\#1486](https://github.com/nlohmann/json/issues/1486)
+- Error in parsing and reading msgpack-lite  [\#1485](https://github.com/nlohmann/json/issues/1485)
+- Compiling issues with libc 2.12 [\#1483](https://github.com/nlohmann/json/issues/1483)
+- How do I use reference or pointer binding values? [\#1482](https://github.com/nlohmann/json/issues/1482)
+- Compilation fails in MSVC with the Microsoft Language Extensions disabled [\#1481](https://github.com/nlohmann/json/issues/1481)
+- Functional visit [\#1480](https://github.com/nlohmann/json/issues/1480)
+- \[Question\] Unescaped dump [\#1479](https://github.com/nlohmann/json/issues/1479)
+- Some Help please [\#1478](https://github.com/nlohmann/json/issues/1478)
+- Global variables are stored within the JSON file, how do I declare them as global variables when I read them out in my C++ program?  [\#1476](https://github.com/nlohmann/json/issues/1476)
+- Unable to modify one of the values within the JSON file, and save it  [\#1475](https://github.com/nlohmann/json/issues/1475)
+- Documentation of parse function has two identical @pre causes [\#1473](https://github.com/nlohmann/json/issues/1473)
+- GCC 9.0 build failure [\#1472](https://github.com/nlohmann/json/issues/1472)
+- Can we have an `exists()` method? [\#1471](https://github.com/nlohmann/json/issues/1471)
+- How to parse multi object json from file? [\#1470](https://github.com/nlohmann/json/issues/1470)
+- How to returns the name of the upper object? [\#1467](https://github.com/nlohmann/json/issues/1467)
+- Error: "tuple\_size" has already been declared in the current scope [\#1466](https://github.com/nlohmann/json/issues/1466)
+- Checking keys of two jsons against eachother [\#1465](https://github.com/nlohmann/json/issues/1465)
+- Disable installation when used as meson subproject [\#1463](https://github.com/nlohmann/json/issues/1463)
+- Unpack list of integers to a std::vector\<int\> [\#1460](https://github.com/nlohmann/json/issues/1460)
+- Implement DRY definition of JSON representation of a c++ class  [\#1459](https://github.com/nlohmann/json/issues/1459)
+- json.exception.type\_error.305 with GCC 4.9 when using C++ {} initializer [\#1458](https://github.com/nlohmann/json/issues/1458)
+- API to convert an "uninitialized" json into an empty object or empty array [\#1456](https://github.com/nlohmann/json/issues/1456)
+- How to parse a vector of objects with const attributes [\#1453](https://github.com/nlohmann/json/issues/1453)
+- NLOHMANN\_JSON\_SERIALIZE\_ENUM potentially requires duplicate definitions [\#1450](https://github.com/nlohmann/json/issues/1450)
+- Question about making json object from file directory [\#1449](https://github.com/nlohmann/json/issues/1449)
+- .get\(\) throws error if used with userdefined structs in unordered\_map [\#1448](https://github.com/nlohmann/json/issues/1448)
+- Integer Overflow \(OSS-Fuzz 12506\) [\#1447](https://github.com/nlohmann/json/issues/1447)
+- If a string has too many invalid UTF-8 characters, json::dump attempts to index an array out of bounds. [\#1445](https://github.com/nlohmann/json/issues/1445)
+- Setting values of .JSON file [\#1444](https://github.com/nlohmann/json/issues/1444)
+- alias object\_t::key\_type in basic\_json [\#1442](https://github.com/nlohmann/json/issues/1442)
+- Latest Ubuntu package is 2.1.1 [\#1438](https://github.com/nlohmann/json/issues/1438)
+- lexer.hpp\(1363\)  '\_snprintf': is not a  member | Visualstudio 2017 [\#1437](https://github.com/nlohmann/json/issues/1437)
+- Static method invites inadvertent logic error. [\#1433](https://github.com/nlohmann/json/issues/1433)
+- EOS compilation produces "fatal error: 'nlohmann/json.hpp' file not found" [\#1432](https://github.com/nlohmann/json/issues/1432)
+- Support for bad commas [\#1429](https://github.com/nlohmann/json/issues/1429)
+- Please have one base exception class for all json exceptions [\#1427](https://github.com/nlohmann/json/issues/1427)
+- Compilation warning: 'tuple\_size' defined as a class template here but previously declared as a struct template [\#1426](https://github.com/nlohmann/json/issues/1426)
+- Which version can be used with GCC 4.8.2 ? [\#1424](https://github.com/nlohmann/json/issues/1424)
+- Ignore nullptr values on constructing json object from a container [\#1422](https://github.com/nlohmann/json/issues/1422)
+- Support for custom float precision via unquoted strings [\#1421](https://github.com/nlohmann/json/issues/1421)
+- It is possible to call `json::find` with a json\_pointer as argument. This causes runtime UB/crash. [\#1418](https://github.com/nlohmann/json/issues/1418)
+- Dump throwing exception [\#1416](https://github.com/nlohmann/json/issues/1416)
+- Build error  [\#1415](https://github.com/nlohmann/json/issues/1415)
+- Append version to include.zip [\#1412](https://github.com/nlohmann/json/issues/1412)
+- error C2039: '\_snprintf': is not a member of 'std' - Windows [\#1408](https://github.com/nlohmann/json/issues/1408)
+- Deserializing to vector [\#1407](https://github.com/nlohmann/json/issues/1407)
+- Efficient way to set a `json` object as value into another `json` key [\#1406](https://github.com/nlohmann/json/issues/1406)
+- Document return value of parse\(\) when allow\_exceptions == false and parsing fails [\#1405](https://github.com/nlohmann/json/issues/1405)
+- Unexpected behaviour with structured binding [\#1404](https://github.com/nlohmann/json/issues/1404)
+- Which native types does get\<type\>\(\) allow? [\#1403](https://github.com/nlohmann/json/issues/1403)
+- Add something like Json::StaticString [\#1402](https://github.com/nlohmann/json/issues/1402)
+- -Wmismatched-tags in 3.5.0? [\#1401](https://github.com/nlohmann/json/issues/1401)
+- Coverity Scan reports an UNCAUGHT\_EXCEPT issue [\#1400](https://github.com/nlohmann/json/issues/1400)
+- fff [\#1399](https://github.com/nlohmann/json/issues/1399)
+- sorry this is not an issue, just a Question, How to change a key value in a file and save it ? [\#1398](https://github.com/nlohmann/json/issues/1398)
+- appveyor x64 builds appear to be using Win32 toolset [\#1374](https://github.com/nlohmann/json/issues/1374)
+- Serializing/Deserializing  a Class containing a vector of itself [\#1373](https://github.com/nlohmann/json/issues/1373)
+- Retrieving array elements. [\#1369](https://github.com/nlohmann/json/issues/1369)
+- Deserialize [\#1366](https://github.com/nlohmann/json/issues/1366)
+- call of overloaded for push\_back and operator+= is ambiguous [\#1352](https://github.com/nlohmann/json/issues/1352)
+- got an error and cann't figure it out [\#1351](https://github.com/nlohmann/json/issues/1351)
+- Improve number-to-string conversion [\#1334](https://github.com/nlohmann/json/issues/1334)
+- Implicit type conversion error on MSVC [\#1333](https://github.com/nlohmann/json/issues/1333)
+- NuGet Package [\#1132](https://github.com/nlohmann/json/issues/1132)
+
+- Change macros to numeric\_limits [\#1514](https://github.com/nlohmann/json/pull/1514) ([naszta](https://github.com/naszta))
+- fix GCC 7.1.1 - 7.2.1 on CentOS [\#1496](https://github.com/nlohmann/json/pull/1496) ([lieff](https://github.com/lieff))
+- Update Buckaroo instructions in README.md [\#1495](https://github.com/nlohmann/json/pull/1495) ([njlr](https://github.com/njlr))
+- Fix gcc9 build error test/src/unit-allocator.cpp \(Issue \#1472\) [\#1492](https://github.com/nlohmann/json/pull/1492) ([stac47](https://github.com/stac47))
+- Fix typo in README.md [\#1491](https://github.com/nlohmann/json/pull/1491) ([nickaein](https://github.com/nickaein))
+- Do proper endian conversions [\#1489](https://github.com/nlohmann/json/pull/1489) ([andreas-schwab](https://github.com/andreas-schwab))
+- Fix documentation [\#1477](https://github.com/nlohmann/json/pull/1477) ([nickaein](https://github.com/nickaein))
+- Implement contains\(\) member function [\#1474](https://github.com/nlohmann/json/pull/1474) ([nickaein](https://github.com/nickaein))
+- Add operator/= and operator/ to construct a JSON pointer by appending two JSON pointers [\#1469](https://github.com/nlohmann/json/pull/1469) ([garethsb](https://github.com/garethsb))
+- Disable Clang -Wmismatched-tags warning on tuple\_size / tuple\_element [\#1468](https://github.com/nlohmann/json/pull/1468) ([past-due](https://github.com/past-due))
+- Disable installation when used as meson subproject. \#1463 [\#1464](https://github.com/nlohmann/json/pull/1464) ([elvisoric](https://github.com/elvisoric))
+- docs: README typo [\#1455](https://github.com/nlohmann/json/pull/1455) ([wythe](https://github.com/wythe))
+- remove extra semicolon from readme [\#1451](https://github.com/nlohmann/json/pull/1451) ([Afforix](https://github.com/Afforix))
+- attempt to fix \#1445, flush buffer in serializer::dump\_escaped in UTF8\_REJECT case. [\#1446](https://github.com/nlohmann/json/pull/1446) ([scinart](https://github.com/scinart))
+- Use C++11 features supported by CMake 3.1. [\#1441](https://github.com/nlohmann/json/pull/1441) ([iwanders](https://github.com/iwanders))
+- :rotating\_light: fixed unused variable warning [\#1435](https://github.com/nlohmann/json/pull/1435) ([pboettch](https://github.com/pboettch))
+- allow push\_back\(\) and pop\_back\(\) calls on json\_pointer [\#1434](https://github.com/nlohmann/json/pull/1434) ([pboettch](https://github.com/pboettch))
+- Add instructions about using nlohmann/json with the conda package manager [\#1430](https://github.com/nlohmann/json/pull/1430) ([nicoddemus](https://github.com/nicoddemus))
+- Updated year in README.md [\#1425](https://github.com/nlohmann/json/pull/1425) ([jef](https://github.com/jef))
+- Fixed broken links in the README file [\#1423](https://github.com/nlohmann/json/pull/1423) ([skypjack](https://github.com/skypjack))
+- Fixed broken links in the README file [\#1420](https://github.com/nlohmann/json/pull/1420) ([skypjack](https://github.com/skypjack))
+- docs: typo in README [\#1417](https://github.com/nlohmann/json/pull/1417) ([wythe](https://github.com/wythe))
+- Fix x64 target platform for appveyor [\#1414](https://github.com/nlohmann/json/pull/1414) ([nickaein](https://github.com/nickaein))
+- Improve dump\_integer performance [\#1411](https://github.com/nlohmann/json/pull/1411) ([nickaein](https://github.com/nickaein))
+- buildsystem: relax requirement on cmake version [\#1409](https://github.com/nlohmann/json/pull/1409) ([yann-morin-1998](https://github.com/yann-morin-1998))
+- CMake: Optional Install if Embedded [\#1330](https://github.com/nlohmann/json/pull/1330) ([ax3l](https://github.com/ax3l))
+
+## [v3.5.0](https://github.com/nlohmann/json/releases/tag/v3.5.0) (2018-12-21)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.4.0...v3.5.0)
+
+- Copyconstructor inserts original into array with single element [\#1397](https://github.com/nlohmann/json/issues/1397)
+- Get value without explicit typecasting [\#1395](https://github.com/nlohmann/json/issues/1395)
+- Big file parsing [\#1393](https://github.com/nlohmann/json/issues/1393)
+- Adding Structured Binding Support [\#1388](https://github.com/nlohmann/json/issues/1388)
+- map\<json::value\_t, string\> exhibits unexpected behavior [\#1387](https://github.com/nlohmann/json/issues/1387)
+- Error Code Return [\#1386](https://github.com/nlohmann/json/issues/1386)
+- using unordered\_map as object type [\#1385](https://github.com/nlohmann/json/issues/1385)
+- float precision [\#1384](https://github.com/nlohmann/json/issues/1384)
+- \[json.exception.type\_error.316\] invalid UTF-8 byte at index 1: 0xC3 [\#1383](https://github.com/nlohmann/json/issues/1383)
+- Inconsistent Constructor \(GCC vs. Clang\) [\#1381](https://github.com/nlohmann/json/issues/1381)
+- \#define or || [\#1379](https://github.com/nlohmann/json/issues/1379)
+- How to iterate inside the values ? [\#1377](https://github.com/nlohmann/json/issues/1377)
+- items\(\) unable to get the elements [\#1375](https://github.com/nlohmann/json/issues/1375)
+- conversion json to std::map doesn't work for types \<int, double\>  [\#1372](https://github.com/nlohmann/json/issues/1372)
+- A minor issue in the build instructions [\#1371](https://github.com/nlohmann/json/issues/1371)
+- Using this library without stream ? [\#1370](https://github.com/nlohmann/json/issues/1370)
+- Writing and reading BSON data [\#1368](https://github.com/nlohmann/json/issues/1368)
+- Retrieving array elements from object type iterator. [\#1367](https://github.com/nlohmann/json/issues/1367)
+- json::dump\(\) silently crashes if items contain accented letters [\#1365](https://github.com/nlohmann/json/issues/1365)
+- warnings in MSVC \(2015\) in 3.4.0 related to bool... [\#1364](https://github.com/nlohmann/json/issues/1364)
+- Cant compile with -C++17 and beyond compiler options [\#1362](https://github.com/nlohmann/json/issues/1362)
+- json to concrete type conversion through reference or pointer fails [\#1361](https://github.com/nlohmann/json/issues/1361)
+- the first attributes of JSON string is misplaced  [\#1360](https://github.com/nlohmann/json/issues/1360)
+- Copy-construct using initializer-list converts objects to arrays [\#1359](https://github.com/nlohmann/json/issues/1359)
+- About value\(key, default\_value\) and operator\[\]\(key\)  [\#1358](https://github.com/nlohmann/json/issues/1358)
+- Problem with printing json response object [\#1356](https://github.com/nlohmann/json/issues/1356)
+- Serializing pointer segfaults [\#1355](https://github.com/nlohmann/json/issues/1355)
+- Read `long long int` data as a number. [\#1354](https://github.com/nlohmann/json/issues/1354)
+- eclipse oxygen in ubuntu get\<size\_t\> is ambiguous  [\#1353](https://github.com/nlohmann/json/issues/1353)
+- Can't build on Visual Studio 2017 v15.8.9 [\#1350](https://github.com/nlohmann/json/issues/1350)
+- cannot parse from string? [\#1349](https://github.com/nlohmann/json/issues/1349)
+- Error: out\_of\_range [\#1348](https://github.com/nlohmann/json/issues/1348)
+- expansion pattern 'CompatibleObjectType' contains no argument packs, with CUDA 10 [\#1347](https://github.com/nlohmann/json/issues/1347)
+- Unable to update a value for a nested\(multi-level\) json file [\#1344](https://github.com/nlohmann/json/issues/1344)
+- Fails to compile when std::iterator\_traits is not SFINAE friendly. [\#1341](https://github.com/nlohmann/json/issues/1341)
+- EOF flag not set on exhausted input streams. [\#1340](https://github.com/nlohmann/json/issues/1340)
+- Shadowed Member in merge\_patch [\#1339](https://github.com/nlohmann/json/issues/1339)
+- Periods/literal dots in keys? [\#1338](https://github.com/nlohmann/json/issues/1338)
+- Protect macro expansion of commonly defined macros [\#1337](https://github.com/nlohmann/json/issues/1337)
+- How to validate an input before parsing? [\#1336](https://github.com/nlohmann/json/issues/1336)
+- Non-verifying dump\(\) alternative for debugging/logging needed [\#1335](https://github.com/nlohmann/json/issues/1335)
+- Json Libarary is not responding for me in c++ [\#1332](https://github.com/nlohmann/json/issues/1332)
+- Question - how to find an object in an array [\#1331](https://github.com/nlohmann/json/issues/1331)
+- Nesting additional data in json object [\#1328](https://github.com/nlohmann/json/issues/1328)
+- can to\_json\(\) be defined inside a class? [\#1324](https://github.com/nlohmann/json/issues/1324)
+- CodeBlocks IDE can't find `json.hpp` header [\#1318](https://github.com/nlohmann/json/issues/1318)
+- Change json\_pointer to provide an iterator begin/end/etc, don't use vectors, and also enable string\_view [\#1312](https://github.com/nlohmann/json/issues/1312)
+- Xcode - adding it to library  [\#1300](https://github.com/nlohmann/json/issues/1300)
+- unicode: accept char16\_t, char32\_t sequences [\#1298](https://github.com/nlohmann/json/issues/1298)
+- unicode: char16\_t\* is compiler error, but char16\_t\[\] is accepted [\#1297](https://github.com/nlohmann/json/issues/1297)
+- Dockerfile Project Help Needed [\#1296](https://github.com/nlohmann/json/issues/1296)
+- Comparisons between large unsigned and negative signed integers [\#1295](https://github.com/nlohmann/json/issues/1295)
+- CMake alias to `nlohmann::json` [\#1291](https://github.com/nlohmann/json/issues/1291)
+- Release zips without tests [\#1285](https://github.com/nlohmann/json/issues/1285)
+- separate object\_t::key\_type from basic\_json::key\_type, and use an allocator which returns object\_t::key\_type [\#1274](https://github.com/nlohmann/json/issues/1274)
+- Is there a nice way to associate external values with json elements? [\#1256](https://github.com/nlohmann/json/issues/1256)
+- Delete by json\_pointer [\#1248](https://github.com/nlohmann/json/issues/1248)
+- Expose lexer, as a StAX parser [\#1219](https://github.com/nlohmann/json/issues/1219)
+- Subclassing json\(\) & error on recursive load [\#1201](https://github.com/nlohmann/json/issues/1201)
+- Check value for existence by json\_pointer [\#1194](https://github.com/nlohmann/json/issues/1194)
+
+- Feature/add file input adapter [\#1392](https://github.com/nlohmann/json/pull/1392) ([dumarjo](https://github.com/dumarjo))
+-  Added Support for Structured Bindings  [\#1391](https://github.com/nlohmann/json/pull/1391) ([pratikpc](https://github.com/pratikpc))
+- Link to issue \#958 broken [\#1382](https://github.com/nlohmann/json/pull/1382) ([kjpus](https://github.com/kjpus))
+- readme: fix typo [\#1380](https://github.com/nlohmann/json/pull/1380) ([manu-chroma](https://github.com/manu-chroma))
+- recommend using explicit from JSON conversions [\#1363](https://github.com/nlohmann/json/pull/1363) ([theodelrieu](https://github.com/theodelrieu))
+- Fix merge\_patch shadow warning [\#1346](https://github.com/nlohmann/json/pull/1346) ([ax3l](https://github.com/ax3l))
+- Allow installation via Meson [\#1345](https://github.com/nlohmann/json/pull/1345) ([mpoquet](https://github.com/mpoquet))
+- Set eofbit on exhausted input stream. [\#1343](https://github.com/nlohmann/json/pull/1343) ([mefyl](https://github.com/mefyl))
+- Add a SFINAE friendly iterator\_traits and use that instead. [\#1342](https://github.com/nlohmann/json/pull/1342) ([dgavedissian](https://github.com/dgavedissian))
+- Fix EOL Whitespaces & CMake Spelling [\#1329](https://github.com/nlohmann/json/pull/1329) ([ax3l](https://github.com/ax3l))
+
+## [v3.4.0](https://github.com/nlohmann/json/releases/tag/v3.4.0) (2018-10-30)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.3.0...v3.4.0)
+
+- Big uint64\_t values are serialized wrong [\#1327](https://github.com/nlohmann/json/issues/1327)
+- \[Question\] Efficient check for equivalency? [\#1325](https://github.com/nlohmann/json/issues/1325)
+- Can't use ifstream and .clear\(\) [\#1321](https://github.com/nlohmann/json/issues/1321)
+- \[Warning\] -Wparentheses on line 555 on single\_include [\#1319](https://github.com/nlohmann/json/issues/1319)
+- Compilation error using at and find with enum struct [\#1316](https://github.com/nlohmann/json/issues/1316)
+- Parsing JSON from a web address [\#1311](https://github.com/nlohmann/json/issues/1311)
+- How to convert JSON to Struct with embeded subject [\#1310](https://github.com/nlohmann/json/issues/1310)
+- Null safety/coalescing function? [\#1309](https://github.com/nlohmann/json/issues/1309)
+- Building fails using single include file: json.hpp [\#1308](https://github.com/nlohmann/json/issues/1308)
+- json::parse\(std::string\) Exception inside packaged Lib [\#1306](https://github.com/nlohmann/json/issues/1306)
+- Problem in Dockerfile with installation of library [\#1304](https://github.com/nlohmann/json/issues/1304)
+- compile error in from\_json converting to container with std::pair [\#1299](https://github.com/nlohmann/json/issues/1299)
+- Json that I am trying to parse, and I am lost Structure Array below top level [\#1293](https://github.com/nlohmann/json/issues/1293)
+- Serializing std::variant causes stack overflow [\#1292](https://github.com/nlohmann/json/issues/1292)
+- How do I go about customising from\_json to support \_\_int128\_t/\_\_uint128\_t? [\#1290](https://github.com/nlohmann/json/issues/1290)
+- merge\_patch: inconsistent behaviour merging empty sub-object [\#1289](https://github.com/nlohmann/json/issues/1289)
+- Buffer over/underrun using UBJson? [\#1288](https://github.com/nlohmann/json/issues/1288)
+- Enable the latest C++ standard with Visual Studio [\#1287](https://github.com/nlohmann/json/issues/1287)
+- truncation of constant value in to\_cbor\(\) [\#1286](https://github.com/nlohmann/json/issues/1286)
+- eosio.wasmsdk error [\#1284](https://github.com/nlohmann/json/issues/1284)
+- use the same interface for writing arrays and non-arrays [\#1283](https://github.com/nlohmann/json/issues/1283)
+- How to read json file with optional  entries and entries with different types [\#1281](https://github.com/nlohmann/json/issues/1281)
+- merge result not as espected [\#1279](https://github.com/nlohmann/json/issues/1279)
+- how to get only "name" from below json [\#1278](https://github.com/nlohmann/json/issues/1278)
+- syntax error  on right json string [\#1276](https://github.com/nlohmann/json/issues/1276)
+- Parsing JSON Array where members have no key, using custom types [\#1267](https://github.com/nlohmann/json/issues/1267)
+- I get a json exception periodically from json::parse for the same json  [\#1263](https://github.com/nlohmann/json/issues/1263)
+- GCC 8.2.1. Compilation error: invalid conversion from... [\#1246](https://github.com/nlohmann/json/issues/1246)
+- BSON support [\#1244](https://github.com/nlohmann/json/issues/1244)
+- enum to json mapping [\#1208](https://github.com/nlohmann/json/issues/1208)
+- Soften the landing when dumping non-UTF8 strings \(type\_error.316 exception\) [\#1198](https://github.com/nlohmann/json/issues/1198)
+
+- Add macro to define enum/JSON mapping [\#1323](https://github.com/nlohmann/json/pull/1323) ([nlohmann](https://github.com/nlohmann))
+- Add BSON support [\#1320](https://github.com/nlohmann/json/pull/1320) ([nlohmann](https://github.com/nlohmann))
+- Properly convert constants to CharType [\#1315](https://github.com/nlohmann/json/pull/1315) ([nlohmann](https://github.com/nlohmann))
+- Allow to set error handler for decoding errors [\#1314](https://github.com/nlohmann/json/pull/1314) ([nlohmann](https://github.com/nlohmann))
+- Add Meson related info to README [\#1305](https://github.com/nlohmann/json/pull/1305) ([koponomarenko](https://github.com/koponomarenko))
+- Improve diagnostic messages for binary formats [\#1303](https://github.com/nlohmann/json/pull/1303) ([nlohmann](https://github.com/nlohmann))
+- add new is\_constructible\_\* traits used in from\_json [\#1301](https://github.com/nlohmann/json/pull/1301) ([theodelrieu](https://github.com/theodelrieu))
+- add constraints for variadic json\_ref constructors [\#1294](https://github.com/nlohmann/json/pull/1294) ([theodelrieu](https://github.com/theodelrieu))
+- Improve diagnostic messages [\#1282](https://github.com/nlohmann/json/pull/1282) ([nlohmann](https://github.com/nlohmann))
+- Removed linter warnings [\#1280](https://github.com/nlohmann/json/pull/1280) ([nlohmann](https://github.com/nlohmann))
+- Thirdparty benchmark: Fix Clang detection. [\#1277](https://github.com/nlohmann/json/pull/1277) ([Lord-Kamina](https://github.com/Lord-Kamina))
+
+## [v3.3.0](https://github.com/nlohmann/json/releases/tag/v3.3.0) (2018-10-05)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/3.3.0...v3.3.0)
+
+## [3.3.0](https://github.com/nlohmann/json/releases/tag/3.3.0) (2018-10-05)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.2.0...3.3.0)
+
+- When key is not found print the key name into error too [\#1273](https://github.com/nlohmann/json/issues/1273)
+- Visual Studio 2017 15.8.5 "conditional expression is constant" warning on Line 1851 in json.hpp [\#1268](https://github.com/nlohmann/json/issues/1268)
+- how can we get this working on WSL? [\#1264](https://github.com/nlohmann/json/issues/1264)
+- Help needed [\#1259](https://github.com/nlohmann/json/issues/1259)
+- A way to get to a JSON values "key" [\#1258](https://github.com/nlohmann/json/issues/1258)
+- While compiling got 76 errors [\#1255](https://github.com/nlohmann/json/issues/1255)
+- Two blackslashes on json output file [\#1253](https://github.com/nlohmann/json/issues/1253)
+- Including nlohmann the badwrong way. [\#1250](https://github.com/nlohmann/json/issues/1250)
+- how to build with clang? [\#1247](https://github.com/nlohmann/json/issues/1247)
+- Cmake target\_link\_libraries unable to find nlohmann\_json since version 3.2.0 [\#1243](https://github.com/nlohmann/json/issues/1243)
+- \[Question\] Access to end\(\) iterator reference [\#1242](https://github.com/nlohmann/json/issues/1242)
+- Parsing different json format [\#1241](https://github.com/nlohmann/json/issues/1241)
+- Parsing Multiple JSON Files [\#1240](https://github.com/nlohmann/json/issues/1240)
+- Doesn't compile under C++17 [\#1239](https://github.com/nlohmann/json/issues/1239)
+- Conversion operator for nlohmann::json is not SFINAE friendly [\#1237](https://github.com/nlohmann/json/issues/1237)
+- Custom deserialization of number\_float\_t [\#1236](https://github.com/nlohmann/json/issues/1236)
+- deprecated-declarations warnings when compiling tests with GCC 8.2.1. [\#1233](https://github.com/nlohmann/json/issues/1233)
+- Incomplete type with json\_fwd.hpp [\#1232](https://github.com/nlohmann/json/issues/1232)
+- Parse Error [\#1229](https://github.com/nlohmann/json/issues/1229)
+- json::get function with argument [\#1227](https://github.com/nlohmann/json/issues/1227)
+- questions regarding from\_json [\#1226](https://github.com/nlohmann/json/issues/1226)
+- Lambda in unevaluated context [\#1225](https://github.com/nlohmann/json/issues/1225)
+- NLohmann doesn't compile when enabling strict warning policies [\#1224](https://github.com/nlohmann/json/issues/1224)
+- Creating array of objects [\#1223](https://github.com/nlohmann/json/issues/1223)
+- Somewhat unhelpful error message "cannot use operator\[\] with object" [\#1220](https://github.com/nlohmann/json/issues/1220)
+- single\_include json.hpp [\#1218](https://github.com/nlohmann/json/issues/1218)
+- Maps with enum class keys which are convertible to JSON strings should be converted to JSON dictionaries [\#1217](https://github.com/nlohmann/json/issues/1217)
+- Adding JSON Array to the Array  [\#1216](https://github.com/nlohmann/json/issues/1216)
+- Best way to output a vector of a given type to json [\#1215](https://github.com/nlohmann/json/issues/1215)
+- compiler warning: double definition of macro JSON\_INTERNAL\_CATCH  [\#1213](https://github.com/nlohmann/json/issues/1213)
+- Compilation error when using MOCK\_METHOD1 from GMock and nlohmann::json [\#1212](https://github.com/nlohmann/json/issues/1212)
+- Issues parsing a previously encoded binary \(non-UTF8\) string. [\#1211](https://github.com/nlohmann/json/issues/1211)
+- Yet another ordering question: char \* and parse\(\) [\#1209](https://github.com/nlohmann/json/issues/1209)
+- Error using gcc 8.1.0 on Ubuntu 14.04 [\#1207](https://github.com/nlohmann/json/issues/1207)
+- "type must be string, but is " std::string\(j.type\_name\(\)  [\#1206](https://github.com/nlohmann/json/issues/1206)
+- Returning empty json object from a function of type const json& ? [\#1205](https://github.com/nlohmann/json/issues/1205)
+- VS2017 compiler suggests using constexpr if [\#1204](https://github.com/nlohmann/json/issues/1204)
+- Template instatiation error on compiling [\#1203](https://github.com/nlohmann/json/issues/1203)
+- BUG - json dump field with unicode -\> array of ints \(instead of string\) [\#1197](https://github.com/nlohmann/json/issues/1197)
+- Compile error using Code::Blocks // mingw-w64 GCC 8.1.0 - "Incomplete Type" [\#1193](https://github.com/nlohmann/json/issues/1193)
+- SEGFAULT on arm target  [\#1190](https://github.com/nlohmann/json/issues/1190)
+- Compiler crash with old Clang [\#1179](https://github.com/nlohmann/json/issues/1179)
+- Custom Precision on floating point numbers [\#1170](https://github.com/nlohmann/json/issues/1170)
+- Can we have a json\_view class like std::string\_view? [\#1158](https://github.com/nlohmann/json/issues/1158)
+- improve error handling [\#1152](https://github.com/nlohmann/json/issues/1152)
+- We should remove static\_asserts [\#960](https://github.com/nlohmann/json/issues/960)
+
+- Fix warning C4127: conditional expression is constant [\#1272](https://github.com/nlohmann/json/pull/1272) ([antonioborondo](https://github.com/antonioborondo))
+- Turn off additional deprecation warnings for GCC. [\#1271](https://github.com/nlohmann/json/pull/1271) ([chuckatkins](https://github.com/chuckatkins))
+- docs: Add additional CMake documentation [\#1270](https://github.com/nlohmann/json/pull/1270) ([chuckatkins](https://github.com/chuckatkins))
+- unit-testsuites.cpp: fix hangup if file not found [\#1262](https://github.com/nlohmann/json/pull/1262) ([knilch0r](https://github.com/knilch0r))
+- Fix broken cmake imported target alias [\#1260](https://github.com/nlohmann/json/pull/1260) ([chuckatkins](https://github.com/chuckatkins))
+- GCC 48 [\#1257](https://github.com/nlohmann/json/pull/1257) ([henryiii](https://github.com/henryiii))
+- Add version and license to meson.build [\#1252](https://github.com/nlohmann/json/pull/1252) ([koponomarenko](https://github.com/koponomarenko))
+- \#1179 Reordered the code. It seems to stop clang 3.4.2 in RHEL 7 from crash… [\#1249](https://github.com/nlohmann/json/pull/1249) ([LEgregius](https://github.com/LEgregius))
+- Use a version check to provide backwards comatible CMake imported target names [\#1245](https://github.com/nlohmann/json/pull/1245) ([chuckatkins](https://github.com/chuckatkins))
+- Fix issue \#1237 [\#1238](https://github.com/nlohmann/json/pull/1238) ([theodelrieu](https://github.com/theodelrieu))
+- Add a get overload taking a parameter. [\#1231](https://github.com/nlohmann/json/pull/1231) ([theodelrieu](https://github.com/theodelrieu))
+- Move lambda out of unevaluated context [\#1230](https://github.com/nlohmann/json/pull/1230) ([mandreyel](https://github.com/mandreyel))
+- Remove static asserts [\#1228](https://github.com/nlohmann/json/pull/1228) ([theodelrieu](https://github.com/theodelrieu))
+- Better error 305 [\#1221](https://github.com/nlohmann/json/pull/1221) ([rivertam](https://github.com/rivertam))
+- Fix \#1213 [\#1214](https://github.com/nlohmann/json/pull/1214) ([simnalamburt](https://github.com/simnalamburt))
+- Export package to allow builds without installing [\#1202](https://github.com/nlohmann/json/pull/1202) ([dennisfischer](https://github.com/dennisfischer))
+
+## [v3.2.0](https://github.com/nlohmann/json/releases/tag/v3.2.0) (2018-08-20)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/3.2.0...v3.2.0)
+
+## [3.2.0](https://github.com/nlohmann/json/releases/tag/3.2.0) (2018-08-20)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.1.2...3.2.0)
+
+- Am I doing this wrong? Getting an empty string [\#1199](https://github.com/nlohmann/json/issues/1199)
+- Incompatible Pointer Type [\#1196](https://github.com/nlohmann/json/issues/1196)
+- json.exception.type\_error.316 [\#1195](https://github.com/nlohmann/json/issues/1195)
+- Strange warnings in Code::Blocks 17.12, GNU GCC [\#1192](https://github.com/nlohmann/json/issues/1192)
+- \[Question\] Current place in code to change floating point resolution [\#1191](https://github.com/nlohmann/json/issues/1191)
+- Add key name when throwing type error [\#1189](https://github.com/nlohmann/json/issues/1189)
+- Not able to include in visual studio code? [\#1188](https://github.com/nlohmann/json/issues/1188)
+- Get an Index or row number of an element [\#1186](https://github.com/nlohmann/json/issues/1186)
+- Difference between `merge_patch` and `update` [\#1183](https://github.com/nlohmann/json/issues/1183)
+- Is there a way to get an element from a JSON without throwing an exception on failure? [\#1182](https://github.com/nlohmann/json/issues/1182)
+- to\_string? [\#1181](https://github.com/nlohmann/json/issues/1181)
+- How to cache a json object's pointer into a map? [\#1180](https://github.com/nlohmann/json/issues/1180)
+- Can this library work within a Qt project for Android using Qt Creator? [\#1178](https://github.com/nlohmann/json/issues/1178)
+- How to get all keys of one object? [\#1177](https://github.com/nlohmann/json/issues/1177)
+- How can I only parse the first level and get the value as string? [\#1175](https://github.com/nlohmann/json/issues/1175)
+- I have a query regarding nlohmann::basic\_json::basic\_json [\#1174](https://github.com/nlohmann/json/issues/1174)
+- unordered\_map with vectors won't convert to json? [\#1173](https://github.com/nlohmann/json/issues/1173)
+- return json objects from functions [\#1172](https://github.com/nlohmann/json/issues/1172)
+- Problem when exporting to CBOR [\#1171](https://github.com/nlohmann/json/issues/1171)
+- Roundtripping null to nullptr does not work [\#1169](https://github.com/nlohmann/json/issues/1169)
+- MSVC fails to compile std::swap specialization for nlohmann::json [\#1168](https://github.com/nlohmann/json/issues/1168)
+- Unexpected behaviour of is\_null - Part II [\#1167](https://github.com/nlohmann/json/issues/1167)
+- Floating point imprecision [\#1166](https://github.com/nlohmann/json/issues/1166)
+- Combine json objects into one? [\#1165](https://github.com/nlohmann/json/issues/1165)
+- Is there any way to know if the object has changed? [\#1164](https://github.com/nlohmann/json/issues/1164)
+- Value throws on null string [\#1163](https://github.com/nlohmann/json/issues/1163)
+- Weird template issue in large project [\#1162](https://github.com/nlohmann/json/issues/1162)
+- \_json returns a different result vs ::parse [\#1161](https://github.com/nlohmann/json/issues/1161)
+- Showing difference between two json objects [\#1160](https://github.com/nlohmann/json/issues/1160)
+- no instance of overloaded function "std::swap" matches the specified type	 [\#1159](https://github.com/nlohmann/json/issues/1159)
+- resize\(...\)? [\#1157](https://github.com/nlohmann/json/issues/1157)
+- Issue with struct nested in class' to\_json [\#1155](https://github.com/nlohmann/json/issues/1155)
+- Deserialize std::map with std::nan [\#1154](https://github.com/nlohmann/json/issues/1154)
+- Parse throwing errors [\#1149](https://github.com/nlohmann/json/issues/1149)
+- cocoapod integration [\#1148](https://github.com/nlohmann/json/issues/1148)
+- wstring parsing [\#1147](https://github.com/nlohmann/json/issues/1147)
+- Is it possible to dump a two-dimensional array to "\[\[null\],\[1,2,3\]\]"? [\#1146](https://github.com/nlohmann/json/issues/1146)
+- Want to write a class member variable and a struct variable \( this structure is inside the class\) to the json file [\#1145](https://github.com/nlohmann/json/issues/1145)
+- Does json support converting an instance of a struct into json string? [\#1143](https://github.com/nlohmann/json/issues/1143)
+- \#Most efficient way to search for child parameters \(recursive find?\) [\#1141](https://github.com/nlohmann/json/issues/1141)
+-  could not find to\_json\(\) method in T's namespace [\#1140](https://github.com/nlohmann/json/issues/1140)
+- chars get treated as JSON numbers not JSON strings [\#1139](https://github.com/nlohmann/json/issues/1139)
+- How do I count number of objects in array? [\#1137](https://github.com/nlohmann/json/issues/1137)
+- Serializing a vector of classes? [\#1136](https://github.com/nlohmann/json/issues/1136)
+- Compile error. Unable convert form nullptr to nullptr&& [\#1135](https://github.com/nlohmann/json/issues/1135)
+- std::unordered\_map in struct, serialization [\#1133](https://github.com/nlohmann/json/issues/1133)
+- dump\(\) can't handle umlauts [\#1131](https://github.com/nlohmann/json/issues/1131)
+- Add a way to get a key reference from the iterator [\#1127](https://github.com/nlohmann/json/issues/1127)
+- can't not parse "\\“ string [\#1123](https://github.com/nlohmann/json/issues/1123)
+-  if  json file  contain Internationalization   chars   ,  get  exception [\#1122](https://github.com/nlohmann/json/issues/1122)
+- How to use a json::iterator dereferenced value in code? [\#1120](https://github.com/nlohmann/json/issues/1120)
+- Disable implicit conversions from json to std::initializer\_list\<T\> for any T [\#1118](https://github.com/nlohmann/json/issues/1118)
+- Implicit conversions to complex types can lead to surprising and confusing errors [\#1116](https://github.com/nlohmann/json/issues/1116)
+- How can I write from\_json for a complex datatype that is not default constructible? [\#1115](https://github.com/nlohmann/json/issues/1115)
+- Compile error in VS2015 when compiling unit-conversions.cpp [\#1114](https://github.com/nlohmann/json/issues/1114)
+- ADL Serializer for std::any / boost::any [\#1113](https://github.com/nlohmann/json/issues/1113)
+- Unexpected behaviour of is\_null [\#1112](https://github.com/nlohmann/json/issues/1112)
+- How to resolve  " undefined reference to `std::\_\_throw\_bad\_cast\(\)'" [\#1111](https://github.com/nlohmann/json/issues/1111)
+- cannot compile on ubuntu 18.04 and 16.04 [\#1110](https://github.com/nlohmann/json/issues/1110)
+- JSON representation for floating point values has too many digits [\#1109](https://github.com/nlohmann/json/issues/1109)
+- Not working for classes containing "\_declspec\(dllimport\)" in their declaration [\#1108](https://github.com/nlohmann/json/issues/1108)
+- Get keys from json object [\#1107](https://github.com/nlohmann/json/issues/1107)
+- Cannot deserialize types using std::ratio [\#1105](https://github.com/nlohmann/json/issues/1105)
+-  i want to learn json [\#1104](https://github.com/nlohmann/json/issues/1104)
+- Type checking during compile [\#1103](https://github.com/nlohmann/json/issues/1103)
+- Iterate through sub items [\#1102](https://github.com/nlohmann/json/issues/1102)
+- cppcheck failing for version 3.1.2 [\#1101](https://github.com/nlohmann/json/issues/1101)
+- Deserializing std::map [\#1100](https://github.com/nlohmann/json/issues/1100)
+- accessing key by reference [\#1098](https://github.com/nlohmann/json/issues/1098)
+- clang 3.8.0 croaks while trying to compile with debug symbols [\#1097](https://github.com/nlohmann/json/issues/1097)
+- Serialize a list of class objects with json [\#1096](https://github.com/nlohmann/json/issues/1096)
+- Small question [\#1094](https://github.com/nlohmann/json/issues/1094)
+- Upgrading to 3.x: to\_/from\_json with enum class [\#1093](https://github.com/nlohmann/json/issues/1093)
+- Q: few questions about json construction [\#1092](https://github.com/nlohmann/json/issues/1092)
+- general crayCC compilation failure [\#1091](https://github.com/nlohmann/json/issues/1091)
+- Merge Patch clears original data [\#1090](https://github.com/nlohmann/json/issues/1090)
+- \[Question\] how to use nlohmann/json in c++? [\#1088](https://github.com/nlohmann/json/issues/1088)
+- C++17 decomposition declaration support [\#1087](https://github.com/nlohmann/json/issues/1087)
+- \[Question\] Access multi-level json objects [\#1086](https://github.com/nlohmann/json/issues/1086)
+- Serializing vector [\#1085](https://github.com/nlohmann/json/issues/1085)
+- update nested value in multi hierarchy json object [\#1084](https://github.com/nlohmann/json/issues/1084)
+- Overriding default values? [\#1083](https://github.com/nlohmann/json/issues/1083)
+- detail namespace collision with Cereal? [\#1082](https://github.com/nlohmann/json/issues/1082)
+- Error using json.dump\(\); [\#1081](https://github.com/nlohmann/json/issues/1081)
+- Consuming TCP Stream [\#1080](https://github.com/nlohmann/json/issues/1080)
+- Compilation error with strong typed enums in map in combination with namespaces [\#1079](https://github.com/nlohmann/json/issues/1079)
+- cassert error [\#1076](https://github.com/nlohmann/json/issues/1076)
+- Valid json data not being parsed [\#1075](https://github.com/nlohmann/json/issues/1075)
+- Feature request :: Better testing for key existance without try/catch [\#1074](https://github.com/nlohmann/json/issues/1074)
+- Hi, I have input like a.b.c and want to convert it to \"a\"{\"b\": \"c\"} form. Any suggestions how do I do this? Thanks. [\#1073](https://github.com/nlohmann/json/issues/1073)
+- ADL deserializer not picked up for non default-constructible type [\#1072](https://github.com/nlohmann/json/issues/1072)
+- Deserializing std::array doesn't compiler \(no insert\(\)\) [\#1071](https://github.com/nlohmann/json/issues/1071)
+- Serializing OpenCV Mat problem [\#1070](https://github.com/nlohmann/json/issues/1070)
+- Compilation error with ICPC compiler [\#1068](https://github.com/nlohmann/json/issues/1068)
+- Not existing value, crash [\#1065](https://github.com/nlohmann/json/issues/1065)
+- cyryllic symbols [\#1064](https://github.com/nlohmann/json/issues/1064)
+- newbie usage question [\#1063](https://github.com/nlohmann/json/issues/1063)
+- Trying j\["strTest"\] = "%A" produces "strTest": "-0X1.CCCCCCCCCCCCCP+205" [\#1062](https://github.com/nlohmann/json/issues/1062)
+- convert json value to std::string??? [\#1061](https://github.com/nlohmann/json/issues/1061)
+- Commented out test cases, should they be removed? [\#1060](https://github.com/nlohmann/json/issues/1060)
+- different behaviour between clang and gcc with braced initialization [\#1059](https://github.com/nlohmann/json/issues/1059)
+- json array:  initialize with prescribed size and `resize` method. [\#1057](https://github.com/nlohmann/json/issues/1057)
+- Is it possible to use exceptions istead of assertions? [\#1056](https://github.com/nlohmann/json/issues/1056)
+- when using assign operator in with json object a static assertion fails.. [\#1055](https://github.com/nlohmann/json/issues/1055)
+- Iterate over leafs of a JSON data structure: enrich the JSON pointer API [\#1054](https://github.com/nlohmann/json/issues/1054)
+- \[Feature request\] Access by path [\#1053](https://github.com/nlohmann/json/issues/1053)
+- document that implicit js -\> primitive conversion does not work for std::string::value\_type and why [\#1052](https://github.com/nlohmann/json/issues/1052)
+- error: ‘BasicJsonType’ in namespace ‘::’ does not name a type [\#1051](https://github.com/nlohmann/json/issues/1051)
+- Destructor is called when filling object through assignement [\#1050](https://github.com/nlohmann/json/issues/1050)
+- Is this thing thread safe for reads? [\#1049](https://github.com/nlohmann/json/issues/1049)
+- clang-tidy: Call to virtual function during construction  [\#1046](https://github.com/nlohmann/json/issues/1046)
+- Using STL algorithms with JSON containers with expected results? [\#1045](https://github.com/nlohmann/json/issues/1045)
+- Usage with gtest/gmock not working as expected [\#1044](https://github.com/nlohmann/json/issues/1044)
+- Consequences of from\_json / to\_json being in namespace of data struct. [\#1042](https://github.com/nlohmann/json/issues/1042)
+- const\_reference operator\[\]\(const typename object\_t::key\_type& key\) const throw instead of assert [\#1039](https://github.com/nlohmann/json/issues/1039)
+- Trying to retrieve data from nested objects [\#1038](https://github.com/nlohmann/json/issues/1038)
+- Direct download link for json\_fwd.hpp? [\#1037](https://github.com/nlohmann/json/issues/1037)
+- I know the library supports UTF-8, but failed to dump the value [\#1036](https://github.com/nlohmann/json/issues/1036)
+- Putting a Vec3-like vector into a json object [\#1035](https://github.com/nlohmann/json/issues/1035)
+- Ternary operator crash [\#1034](https://github.com/nlohmann/json/issues/1034)
+- Issued with Clion Inspection Resolution since 2018.1 [\#1033](https://github.com/nlohmann/json/issues/1033)
+- Some testcases fail and one never finishes [\#1032](https://github.com/nlohmann/json/issues/1032)
+- Can this class work with wchar\_t / std::wstring? [\#1031](https://github.com/nlohmann/json/issues/1031)
+- Makefile: Valgrind flags have no effect [\#1030](https://github.com/nlohmann/json/issues/1030)
+- 「==」 Should be 「\>」 [\#1029](https://github.com/nlohmann/json/issues/1029)
+- HOCON reader? [\#1027](https://github.com/nlohmann/json/issues/1027)
+- add json string in previous string?? [\#1025](https://github.com/nlohmann/json/issues/1025)
+- RFC: fluent parsing interface [\#1023](https://github.com/nlohmann/json/issues/1023)
+- Does it support chinese character? [\#1022](https://github.com/nlohmann/json/issues/1022)
+- to/from\_msgpack only works with standard typization [\#1021](https://github.com/nlohmann/json/issues/1021)
+- Build failure using latest clang and GCC compilers [\#1020](https://github.com/nlohmann/json/issues/1020)
+- can two json objects be concatenated? [\#1019](https://github.com/nlohmann/json/issues/1019)
+- Erase by integer index [\#1018](https://github.com/nlohmann/json/issues/1018)
+- Function find overload taking a json\_pointer [\#1017](https://github.com/nlohmann/json/issues/1017)
+- I think should implement an parser function [\#1016](https://github.com/nlohmann/json/issues/1016)
+- Readme gif [\#1015](https://github.com/nlohmann/json/issues/1015)
+- Python bindings [\#1014](https://github.com/nlohmann/json/issues/1014)
+- how to add two json string in single object?? [\#1012](https://github.com/nlohmann/json/issues/1012)
+- how to serialize class Object \(convert data in object into json\)?? [\#1011](https://github.com/nlohmann/json/issues/1011)
+- Enable forward declaration of json by making json a class instead of a using declaration [\#997](https://github.com/nlohmann/json/issues/997)
+- compilation error while using intel c++ compiler 2018 [\#994](https://github.com/nlohmann/json/issues/994)
+- How to create a json variable? [\#990](https://github.com/nlohmann/json/issues/990)
+- istream \>\> json  --- 1st character skipped in stream [\#976](https://github.com/nlohmann/json/issues/976)
+- Add a SAX parser [\#971](https://github.com/nlohmann/json/issues/971)
+- How to solve large json file? [\#927](https://github.com/nlohmann/json/issues/927)
+- json\_pointer public push\_back, pop\_back [\#837](https://github.com/nlohmann/json/issues/837)
+- Using input\_adapter in a slightly unexpected way [\#834](https://github.com/nlohmann/json/issues/834)
+
+- Fix -Wno-sometimes-uninitialized by initializing "result" in parse\_sax [\#1200](https://github.com/nlohmann/json/pull/1200) ([thyu](https://github.com/thyu))
+- \[RFC\] Introduce a new macro function: JSON\_INTERNAL\_CATCH [\#1187](https://github.com/nlohmann/json/pull/1187) ([simnalamburt](https://github.com/simnalamburt))
+- Fix unit tests that were silently skipped or crashed \(depending on the compiler\) [\#1176](https://github.com/nlohmann/json/pull/1176) ([grembo](https://github.com/grembo))
+- Refactor/no virtual sax [\#1153](https://github.com/nlohmann/json/pull/1153) ([theodelrieu](https://github.com/theodelrieu))
+- Fixed compiler error in VS 2015 for debug mode [\#1151](https://github.com/nlohmann/json/pull/1151) ([sonulohani](https://github.com/sonulohani))
+- Fix links to cppreference named requirements \(formerly concepts\) [\#1144](https://github.com/nlohmann/json/pull/1144) ([jrakow](https://github.com/jrakow))
+- meson: fix include directory [\#1142](https://github.com/nlohmann/json/pull/1142) ([jrakow](https://github.com/jrakow))
+- Feature/unordered map conversion [\#1138](https://github.com/nlohmann/json/pull/1138) ([theodelrieu](https://github.com/theodelrieu))
+- fixed compile error for \#1045 [\#1134](https://github.com/nlohmann/json/pull/1134) ([Daniel599](https://github.com/Daniel599))
+-  test \(non\)equality for alt\_string implementation  [\#1130](https://github.com/nlohmann/json/pull/1130) ([agrianius](https://github.com/agrianius))
+- remove stringstream dependency [\#1117](https://github.com/nlohmann/json/pull/1117) ([TinyTinni](https://github.com/TinyTinni))
+- Provide a from\_json overload for std::map [\#1089](https://github.com/nlohmann/json/pull/1089) ([theodelrieu](https://github.com/theodelrieu))
+- fix typo in README [\#1078](https://github.com/nlohmann/json/pull/1078) ([martin-mfg](https://github.com/martin-mfg))
+- Fix typo [\#1058](https://github.com/nlohmann/json/pull/1058) ([dns13](https://github.com/dns13))
+- Misc cmake packaging enhancements [\#1048](https://github.com/nlohmann/json/pull/1048) ([chuckatkins](https://github.com/chuckatkins))
+- Fixed incorrect LLVM version number in README [\#1047](https://github.com/nlohmann/json/pull/1047) ([jammehcow](https://github.com/jammehcow))
+- Fix trivial typo in comment. [\#1043](https://github.com/nlohmann/json/pull/1043) ([coryan](https://github.com/coryan))
+- Package Manager: Spack [\#1041](https://github.com/nlohmann/json/pull/1041) ([ax3l](https://github.com/ax3l))
+- CMake: 3.8+ is Sufficient [\#1040](https://github.com/nlohmann/json/pull/1040) ([ax3l](https://github.com/ax3l))
+- Added support for string\_view in C++17 [\#1028](https://github.com/nlohmann/json/pull/1028) ([gracicot](https://github.com/gracicot))
+- Added public target\_compile\_features for auto and constexpr [\#1026](https://github.com/nlohmann/json/pull/1026) ([ktonon](https://github.com/ktonon))
+
+## [v3.1.2](https://github.com/nlohmann/json/releases/tag/v3.1.2) (2018-03-14)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/3.1.2...v3.1.2)
+
+## [3.1.2](https://github.com/nlohmann/json/releases/tag/3.1.2) (2018-03-14)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.1.1...3.1.2)
+
+- STL containers are always serialized to a nested array like \[\[1,2,3\]\] [\#1013](https://github.com/nlohmann/json/issues/1013)
+- The library doesn't want to insert an unordered\_map [\#1010](https://github.com/nlohmann/json/issues/1010)
+- Convert Json to uint8\_t [\#1008](https://github.com/nlohmann/json/issues/1008)
+- How to compare two JSON objects? [\#1007](https://github.com/nlohmann/json/issues/1007)
+- Syntax checking [\#1003](https://github.com/nlohmann/json/issues/1003)
+- more than one operator '=' matches these operands [\#1002](https://github.com/nlohmann/json/issues/1002)
+- How to check if key existed  [\#1000](https://github.com/nlohmann/json/issues/1000)
+- nlohmann::json::parse exhaust memory in go binding [\#999](https://github.com/nlohmann/json/issues/999)
+- Range-based iteration over a non-array object [\#998](https://github.com/nlohmann/json/issues/998)
+- get\<T\> for types that are not default constructible [\#996](https://github.com/nlohmann/json/issues/996)
+- Prevent Null values to appear in .dump\(\) [\#995](https://github.com/nlohmann/json/issues/995)
+- number parsing [\#993](https://github.com/nlohmann/json/issues/993)
+- C2664 \(C++/CLR\) cannot convert 'nullptr' to 'nullptr &&' [\#987](https://github.com/nlohmann/json/issues/987)
+- Uniform initialization from another json object differs between gcc and clang. [\#985](https://github.com/nlohmann/json/issues/985)
+- Problem with adding the lib as a submodule [\#983](https://github.com/nlohmann/json/issues/983)
+- UTF-8/Unicode error [\#982](https://github.com/nlohmann/json/issues/982)
+- "forcing MSVC stacktrace to show which T we're talking about." error [\#980](https://github.com/nlohmann/json/issues/980)
+- reverse order of serialization  [\#979](https://github.com/nlohmann/json/issues/979)
+- Assigning between different json types [\#977](https://github.com/nlohmann/json/issues/977)
+- Support serialisation of `unique_ptr<>` and `shared_ptr<>` [\#975](https://github.com/nlohmann/json/issues/975)
+- Unexpected end of input \(not same as one before\) [\#974](https://github.com/nlohmann/json/issues/974)
+- Segfault on direct initializing json object [\#973](https://github.com/nlohmann/json/issues/973)
+- Segmentation fault on G++ when trying to assign json string literal to custom json type. [\#972](https://github.com/nlohmann/json/issues/972)
+- os\_defines.h:44:19: error: missing binary operator before token "\(" [\#970](https://github.com/nlohmann/json/issues/970)
+- Passing an iteration object by reference to a function [\#967](https://github.com/nlohmann/json/issues/967)
+- Json and fmt::lib's format\_arg\(\) [\#964](https://github.com/nlohmann/json/issues/964)
+
+- Allowing for user-defined string type in lexer/parser [\#1009](https://github.com/nlohmann/json/pull/1009) ([nlohmann](https://github.com/nlohmann))
+- dump to alternative string type, as defined in basic\_json template [\#1006](https://github.com/nlohmann/json/pull/1006) ([agrianius](https://github.com/agrianius))
+- Fix memory leak during parser callback [\#1001](https://github.com/nlohmann/json/pull/1001) ([nlohmann](https://github.com/nlohmann))
+- fixed misprinted condition detected by PVS Studio. [\#992](https://github.com/nlohmann/json/pull/992) ([bogemic](https://github.com/bogemic))
+- Fix/basic json conversion [\#986](https://github.com/nlohmann/json/pull/986) ([theodelrieu](https://github.com/theodelrieu))
+- Make integration section concise [\#981](https://github.com/nlohmann/json/pull/981) ([wla80](https://github.com/wla80))
+
+## [v3.1.1](https://github.com/nlohmann/json/releases/tag/v3.1.1) (2018-02-13)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.1.0...v3.1.1)
+
+- Updation of child object isn't reflected in parent Object [\#968](https://github.com/nlohmann/json/issues/968)
+- How to add user defined C++ path to sublime text  [\#966](https://github.com/nlohmann/json/issues/966)
+- fast number parsing [\#965](https://github.com/nlohmann/json/issues/965)
+- With non-unique keys, later stored entries are not taken into account anymore [\#963](https://github.com/nlohmann/json/issues/963)
+- Timeout \(OSS-Fuzz 6034\) [\#962](https://github.com/nlohmann/json/issues/962)
+- Incorrect parsing of indefinite length CBOR strings. [\#961](https://github.com/nlohmann/json/issues/961)
+- Reload a json file at runtime without emptying my std::ifstream [\#959](https://github.com/nlohmann/json/issues/959)
+- Split headers should be part of the release [\#956](https://github.com/nlohmann/json/issues/956)
+- Coveralls shows no coverage data [\#953](https://github.com/nlohmann/json/issues/953)
+- Feature request: Implicit conversion to bool [\#951](https://github.com/nlohmann/json/issues/951)
+- converting json to vector of type with templated constructor [\#924](https://github.com/nlohmann/json/issues/924)
+- No structured bindings support? [\#901](https://github.com/nlohmann/json/issues/901)
+- \[Request\] Macro generating from\_json\(\) and to\_json\(\) [\#895](https://github.com/nlohmann/json/issues/895)
+- basic\_json::value throws exception instead of returning default value [\#871](https://github.com/nlohmann/json/issues/871)
+
+- Fix constraints on from\_json\(CompatibleArrayType\) [\#969](https://github.com/nlohmann/json/pull/969) ([theodelrieu](https://github.com/theodelrieu))
+- Make coveralls watch the include folder [\#957](https://github.com/nlohmann/json/pull/957) ([theodelrieu](https://github.com/theodelrieu))
+- Fix links in README.md [\#955](https://github.com/nlohmann/json/pull/955) ([patrikhuber](https://github.com/patrikhuber))
+- Add a note about installing the library with cget [\#954](https://github.com/nlohmann/json/pull/954) ([pfultz2](https://github.com/pfultz2))
+
+## [v3.1.0](https://github.com/nlohmann/json/releases/tag/v3.1.0) (2018-02-01)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/3.1.0...v3.1.0)
+
+## [3.1.0](https://github.com/nlohmann/json/releases/tag/3.1.0) (2018-02-01)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.0.1...3.1.0)
+
+- I have a proposal [\#949](https://github.com/nlohmann/json/issues/949)
+- VERSION define\(s\) [\#948](https://github.com/nlohmann/json/issues/948)
+- v3.0.1 compile error in icc 16.0.4 [\#947](https://github.com/nlohmann/json/issues/947)
+- Use in VS2017 15.5.5 [\#946](https://github.com/nlohmann/json/issues/946)
+- Process for reporting Security Bugs? [\#945](https://github.com/nlohmann/json/issues/945)
+- Please expose a NLOHMANN\_JSON\_VERSION macro [\#943](https://github.com/nlohmann/json/issues/943)
+- Change header include directory to nlohmann/json [\#942](https://github.com/nlohmann/json/issues/942)
+- string\_type in binary\_reader [\#941](https://github.com/nlohmann/json/issues/941)
+- compile error with clang 5.0 -std=c++1z and no string\_view [\#939](https://github.com/nlohmann/json/issues/939)
+- Allow overriding JSON\_THROW to something else than abort\(\) [\#938](https://github.com/nlohmann/json/issues/938)
+- Handle invalid string in Json file [\#937](https://github.com/nlohmann/json/issues/937)
+- Unused variable 'kMinExp' [\#935](https://github.com/nlohmann/json/issues/935)
+- yytext is already defined [\#933](https://github.com/nlohmann/json/issues/933)
+- Equality operator fails [\#931](https://github.com/nlohmann/json/issues/931)
+- use in visual studio 2015 [\#929](https://github.com/nlohmann/json/issues/929)
+- Relative includes of json\_fwd.hpp in detail/meta.hpp. \[Develop branch\] [\#928](https://github.com/nlohmann/json/issues/928)
+- GCC 7.x issue [\#926](https://github.com/nlohmann/json/issues/926)
+- json\_fwd.hpp not installed [\#923](https://github.com/nlohmann/json/issues/923)
+- Use Google Benchmarks [\#921](https://github.com/nlohmann/json/issues/921)
+- Move class json\_pointer to separate file [\#920](https://github.com/nlohmann/json/issues/920)
+- Unable to locate 'to\_json\(\)' and 'from\_json\(\)' methods in the same namespace [\#917](https://github.com/nlohmann/json/issues/917)
+- \[answered\]Read key1 from .value example  [\#914](https://github.com/nlohmann/json/issues/914)
+- Don't use `define private public` in test files [\#913](https://github.com/nlohmann/json/issues/913)
+- value\(\) template argument type deduction [\#912](https://github.com/nlohmann/json/issues/912)
+- Installation path is incorrect [\#910](https://github.com/nlohmann/json/issues/910)
+- H [\#909](https://github.com/nlohmann/json/issues/909)
+- Build failure using clang 5 [\#908](https://github.com/nlohmann/json/issues/908)
+- Amalgate [\#907](https://github.com/nlohmann/json/issues/907)
+- Update documentation and tests wrt. split headers [\#906](https://github.com/nlohmann/json/issues/906)
+- Lib not working on ubuntu 16.04 [\#905](https://github.com/nlohmann/json/issues/905)
+- Problem when writing to file. [\#904](https://github.com/nlohmann/json/issues/904)
+- C2864 error when compiling with VS2015 and VS 2017 [\#903](https://github.com/nlohmann/json/issues/903)
+- \[json.exception.type\_error.304\] cannot use at\(\) with object [\#902](https://github.com/nlohmann/json/issues/902)
+- How do I forward nlohmann::json declaration? [\#899](https://github.com/nlohmann/json/issues/899)
+- How to effectively store binary data? [\#898](https://github.com/nlohmann/json/issues/898)
+- How to get the length of a JSON string without retrieving its std::string? [\#897](https://github.com/nlohmann/json/issues/897)
+- Regression Tests Failure using "ctest" [\#887](https://github.com/nlohmann/json/issues/887)
+- Discuss: add JSON Merge Patch \(RFC 7396\)? [\#877](https://github.com/nlohmann/json/issues/877)
+- Discuss: replace static "iterator\_wrapper" function with "items" member function [\#874](https://github.com/nlohmann/json/issues/874)
+- Make optional user-data available in from\_json [\#864](https://github.com/nlohmann/json/issues/864)
+- Casting to std::string not working in VS2015 [\#861](https://github.com/nlohmann/json/issues/861)
+- Sequential reading of JSON arrays [\#851](https://github.com/nlohmann/json/issues/851)
+- Idea: Handle Multimaps Better [\#816](https://github.com/nlohmann/json/issues/816)
+- Floating point rounding [\#777](https://github.com/nlohmann/json/issues/777)
+- Loss of precision when serializing \<double\> [\#360](https://github.com/nlohmann/json/issues/360)
+
+- Templatize std::string in binary\_reader \#941 [\#950](https://github.com/nlohmann/json/pull/950) ([kaidokert](https://github.com/kaidokert))
+- fix cmake install directory \(for real this time\) [\#944](https://github.com/nlohmann/json/pull/944) ([theodelrieu](https://github.com/theodelrieu))
+- Allow overriding THROW/CATCH/TRY macros with no-exceptions \#938 [\#940](https://github.com/nlohmann/json/pull/940) ([kaidokert](https://github.com/kaidokert))
+- Removed compiler warning about unused variable 'kMinExp' [\#936](https://github.com/nlohmann/json/pull/936) ([zerodefect](https://github.com/zerodefect))
+- Fix a typo in README.md [\#930](https://github.com/nlohmann/json/pull/930) ([Pipeliner](https://github.com/Pipeliner))
+- Howto installation of json\_fwd.hpp \(fixes \#923\) [\#925](https://github.com/nlohmann/json/pull/925) ([zerodefect](https://github.com/zerodefect))
+- fix sfinae on basic\_json UDT constructor [\#919](https://github.com/nlohmann/json/pull/919) ([theodelrieu](https://github.com/theodelrieu))
+- Floating-point formatting [\#915](https://github.com/nlohmann/json/pull/915) ([abolz](https://github.com/abolz))
+- Fix/cmake install [\#911](https://github.com/nlohmann/json/pull/911) ([theodelrieu](https://github.com/theodelrieu))
+- fix link to the documentation of the emplace function [\#900](https://github.com/nlohmann/json/pull/900) ([Dobiasd](https://github.com/Dobiasd))
+- JSON Merge Patch \(RFC 7396\) [\#876](https://github.com/nlohmann/json/pull/876) ([nlohmann](https://github.com/nlohmann))
+- Refactor/split it [\#700](https://github.com/nlohmann/json/pull/700) ([theodelrieu](https://github.com/theodelrieu))
+
+## [v3.0.1](https://github.com/nlohmann/json/releases/tag/v3.0.1) (2017-12-29)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/3.0.1...v3.0.1)
+
+## [3.0.1](https://github.com/nlohmann/json/releases/tag/3.0.1) (2017-12-29)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v3.0.0...3.0.1)
+
+- Problem parsing array to global vector [\#896](https://github.com/nlohmann/json/issues/896)
+- Invalid RFC6902 copy operation succeeds [\#894](https://github.com/nlohmann/json/issues/894)
+- How to rename a key during looping? [\#893](https://github.com/nlohmann/json/issues/893)
+- clang++-6.0 \(6.0.0-svn321357-1\) warning [\#892](https://github.com/nlohmann/json/issues/892)
+- Make json.hpp aware of the modules TS? [\#891](https://github.com/nlohmann/json/issues/891)
+- All enum values not handled in switch cases. \( -Wswitch-enum \) [\#889](https://github.com/nlohmann/json/issues/889)
+- JSON Pointer resolve failure resulting in incorrect exception code [\#888](https://github.com/nlohmann/json/issues/888)
+- Unexpected nested arrays from std::vector [\#886](https://github.com/nlohmann/json/issues/886)
+- erase multiple elements from a json object [\#884](https://github.com/nlohmann/json/issues/884)
+- Container function overview in Doxygen is not updated [\#883](https://github.com/nlohmann/json/issues/883)
+- How to use this for binary file uploads [\#881](https://github.com/nlohmann/json/issues/881)
+- Allow setting JSON\_BuildTests=OFF from parent CMakeLists.txt [\#846](https://github.com/nlohmann/json/issues/846)
+- Unit test fails for local-independent str-to-num [\#845](https://github.com/nlohmann/json/issues/845)
+- Another idea about type support [\#774](https://github.com/nlohmann/json/issues/774)
+
+- Includes CTest module/adds BUILD\_TESTING option [\#885](https://github.com/nlohmann/json/pull/885) ([TinyTinni](https://github.com/TinyTinni))
+- Fix MSVC warning C4819 [\#882](https://github.com/nlohmann/json/pull/882) ([erengy](https://github.com/erengy))
+- Merge branch 'develop' into coverity\_scan [\#880](https://github.com/nlohmann/json/pull/880) ([nlohmann](https://github.com/nlohmann))
+- :wrench: Fix up a few more effc++ items [\#858](https://github.com/nlohmann/json/pull/858) ([mattismyname](https://github.com/mattismyname))
+
+## [v3.0.0](https://github.com/nlohmann/json/releases/tag/v3.0.0) (2017-12-17)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/3.0.0...v3.0.0)
+
+## [3.0.0](https://github.com/nlohmann/json/releases/tag/3.0.0) (2017-12-17)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.1.1...3.0.0)
+
+- unicode strings [\#878](https://github.com/nlohmann/json/issues/878)
+- Visual Studio 2017 15.5 C++17 std::allocator deprecations [\#872](https://github.com/nlohmann/json/issues/872)
+- Typo "excpetion" [\#869](https://github.com/nlohmann/json/issues/869)
+- Explicit array example in README.md incorrect [\#867](https://github.com/nlohmann/json/issues/867)
+- why don't you release this from Feb. ? [\#865](https://github.com/nlohmann/json/issues/865)
+- json::parse throws std::invalid\_argument when processing string generated by json::dump\(\) [\#863](https://github.com/nlohmann/json/issues/863)
+- code analysis: potential bug? [\#859](https://github.com/nlohmann/json/issues/859)
+- MSVC2017, 15.5 new issues.   [\#857](https://github.com/nlohmann/json/issues/857)
+- very basic: fetching string value/content without quotes [\#853](https://github.com/nlohmann/json/issues/853)
+- Ambiguous function call to get with pointer type and constant json object in VS2015 \(15.4.4\) [\#852](https://github.com/nlohmann/json/issues/852)
+- How to put  object in the array as a member? [\#850](https://github.com/nlohmann/json/issues/850)
+- misclick, please ignore [\#849](https://github.com/nlohmann/json/issues/849)
+- Make XML great again. [\#847](https://github.com/nlohmann/json/issues/847)
+- Converting to array not working [\#843](https://github.com/nlohmann/json/issues/843)
+- Iteration weirdness [\#842](https://github.com/nlohmann/json/issues/842)
+- Use reference or pointer as Object value [\#841](https://github.com/nlohmann/json/issues/841)
+- Ambiguity in parsing nested maps [\#840](https://github.com/nlohmann/json/issues/840)
+- could not find from\_json\(\) method in T's namespace [\#839](https://github.com/nlohmann/json/issues/839)
+- Incorrect parse error with binary data in keys? [\#838](https://github.com/nlohmann/json/issues/838)
+- using dump\(\) when std::wstring is StringType with VS2017 [\#836](https://github.com/nlohmann/json/issues/836)
+- Show the path of the currently parsed value when an error occurs [\#835](https://github.com/nlohmann/json/issues/835)
+- Repetitive data type while reading [\#833](https://github.com/nlohmann/json/issues/833)
+- Storing multiple types inside map [\#831](https://github.com/nlohmann/json/issues/831)
+- Application terminating [\#830](https://github.com/nlohmann/json/issues/830)
+- Missing CMake hunter package? [\#828](https://github.com/nlohmann/json/issues/828)
+- std::map\<std::string, std::string\> from json object yields C2665: 'std::pair\<const \_Kty,\_Ty\>::pair': none of the 2 overloads could convert all the argument types [\#827](https://github.com/nlohmann/json/issues/827)
+- object.dump gives quoted string, want to use .dump\(\) to generate javascripts. [\#826](https://github.com/nlohmann/json/issues/826)
+- Assertion failed on \["NoExistKey"\] of an not existing key of const json& [\#825](https://github.com/nlohmann/json/issues/825)
+- vs2015 error : static member will remain uninitialized at runtime but use in constant-expressions is supported [\#824](https://github.com/nlohmann/json/issues/824)
+- Code Checking Warnings from json.hpp on VS2017 Community [\#821](https://github.com/nlohmann/json/issues/821)
+- Missing iostream in try online [\#820](https://github.com/nlohmann/json/issues/820)
+- Floating point value loses decimal point during dump [\#818](https://github.com/nlohmann/json/issues/818)
+- Conan package for the library [\#817](https://github.com/nlohmann/json/issues/817)
+- stream error  [\#815](https://github.com/nlohmann/json/issues/815)
+- Link error when using find\(\) on the latest commit [\#814](https://github.com/nlohmann/json/issues/814)
+- ABI issue with json object between 2 shared libraries [\#813](https://github.com/nlohmann/json/issues/813)
+- scan\_string\(\) return token\_type::parse\_error; when parse ansi file [\#812](https://github.com/nlohmann/json/issues/812)
+- segfault when using fifo\_map with json [\#810](https://github.com/nlohmann/json/issues/810)
+- This shit is shit  [\#809](https://github.com/nlohmann/json/issues/809)
+- \_finite and \_isnan are no members of "std" [\#808](https://github.com/nlohmann/json/issues/808)
+- how to print out the line which causing exception? [\#806](https://github.com/nlohmann/json/issues/806)
+- {} uses copy constructor, while = does not [\#805](https://github.com/nlohmann/json/issues/805)
+- json.hpp:8955: multiple definition of function that is not defined twice or more. [\#804](https://github.com/nlohmann/json/issues/804)
+- \[question\] to\_json for base and derived class [\#803](https://github.com/nlohmann/json/issues/803)
+- Misleading error message - unexpected '"' - on incorrect utf-8 symbol [\#802](https://github.com/nlohmann/json/issues/802)
+- json data = std::string\_view\("hi"\); doesn't work? [\#801](https://github.com/nlohmann/json/issues/801)
+- Thread safety of parse\(\) [\#800](https://github.com/nlohmann/json/issues/800)
+- Numbers as strings [\#799](https://github.com/nlohmann/json/issues/799)
+- Tests failing on arm [\#797](https://github.com/nlohmann/json/issues/797)
+- Using your library \(without modification\) in another library [\#796](https://github.com/nlohmann/json/issues/796)
+- Iterating over sub-object [\#794](https://github.com/nlohmann/json/issues/794)
+- how to get the json object again from which printed by the method of dump\(\) [\#792](https://github.com/nlohmann/json/issues/792)
+- ppa to include source [\#791](https://github.com/nlohmann/json/issues/791)
+- Different include paths in macOS and Ubuntu [\#790](https://github.com/nlohmann/json/issues/790)
+- Missing break after line 12886 in switch/case [\#789](https://github.com/nlohmann/json/issues/789)
+- All unit tests fail? [\#787](https://github.com/nlohmann/json/issues/787)
+- More use of move semantics in deserialization [\#786](https://github.com/nlohmann/json/issues/786)
+- warning C4706 - Visual Studio 2017 \(/W4\) [\#784](https://github.com/nlohmann/json/issues/784)
+- Compile error in clang 5.0 [\#782](https://github.com/nlohmann/json/issues/782)
+- Error Installing appium\_lib with Ruby v2.4.2 Due to JSON [\#781](https://github.com/nlohmann/json/issues/781)
+- ::get\<int\>\(\) fails in new\(er\) release \[MSVC\] [\#780](https://github.com/nlohmann/json/issues/780)
+- Type Conversion [\#779](https://github.com/nlohmann/json/issues/779)
+- Segfault on nested parsing [\#778](https://github.com/nlohmann/json/issues/778)
+- Build warnings: shadowing exception id [\#776](https://github.com/nlohmann/json/issues/776)
+- multi-level JSON support. [\#775](https://github.com/nlohmann/json/issues/775)
+- SIGABRT on dump\(\) [\#773](https://github.com/nlohmann/json/issues/773)
+- \[Question\] Custom StringType template parameter \(possibility for a KeyType template parameter\) [\#772](https://github.com/nlohmann/json/issues/772)
+- constexpr ALL the Things! [\#771](https://github.com/nlohmann/json/issues/771)
+- error: ‘BasicJsonType’ in namespace ‘::’ does not name a type [\#770](https://github.com/nlohmann/json/issues/770)
+- Program calls abort function [\#769](https://github.com/nlohmann/json/issues/769)
+- \[Question\] Floating point resolution config during dump\(\) ? [\#768](https://github.com/nlohmann/json/issues/768)
+- make check - no test ran [\#767](https://github.com/nlohmann/json/issues/767)
+- The library cannot work properly with custom allocator based containers [\#766](https://github.com/nlohmann/json/issues/766)
+- Documentation or feature request. [\#763](https://github.com/nlohmann/json/issues/763)
+- warnings in msvc about mix/max macro while windows.h is used in the project [\#762](https://github.com/nlohmann/json/issues/762)
+- std::signbit ambiguous [\#761](https://github.com/nlohmann/json/issues/761)
+- How to use value for std::experimental::optional type? [\#760](https://github.com/nlohmann/json/issues/760)
+- Cannot load json file properly [\#759](https://github.com/nlohmann/json/issues/759)
+- Compilation error with unordered\_map\< int, int \> [\#758](https://github.com/nlohmann/json/issues/758)
+- CBOR string [\#757](https://github.com/nlohmann/json/issues/757)
+- Proposal: out\_of\_range should be a subclass of std::out\_of\_range [\#756](https://github.com/nlohmann/json/issues/756)
+- Getter is setting the value to null if the key does not exist [\#754](https://github.com/nlohmann/json/issues/754)
+- parsing works sometimes and crashes others [\#752](https://github.com/nlohmann/json/issues/752)
+- Static\_assert failed "incompatible pointer type" with Xcode [\#751](https://github.com/nlohmann/json/issues/751)
+- user-defined literal operator not found [\#750](https://github.com/nlohmann/json/issues/750)
+- getting clean string from it.key\(\) [\#748](https://github.com/nlohmann/json/issues/748)
+- Best method for exploring and obtaining values of nested json objects when the names are not known beforehand? [\#747](https://github.com/nlohmann/json/issues/747)
+- null char at the end of string [\#746](https://github.com/nlohmann/json/issues/746)
+- Incorrect sample for operator \>\> in docs [\#745](https://github.com/nlohmann/json/issues/745)
+- User-friendly documentation [\#744](https://github.com/nlohmann/json/issues/744)
+- Retrieve all values that match a json path [\#743](https://github.com/nlohmann/json/issues/743)
+- Compilation issue with gcc 7.2 [\#742](https://github.com/nlohmann/json/issues/742)
+- CMake target nlohmann\_json does not have src into its interface includes [\#741](https://github.com/nlohmann/json/issues/741)
+- Error when serializing empty json: type must be string, but is object [\#740](https://github.com/nlohmann/json/issues/740)
+- Conversion error for std::map\<int, std::string\>  [\#739](https://github.com/nlohmann/json/issues/739)
+- Dumping Json to file as array [\#738](https://github.com/nlohmann/json/issues/738)
+- nesting json objects [\#737](https://github.com/nlohmann/json/issues/737)
+- where to find general help? [\#736](https://github.com/nlohmann/json/issues/736)
+- Compilation Error on Clang 5.0 Upgrade [\#735](https://github.com/nlohmann/json/issues/735)
+- Compilation error with std::map\<std::string, std::string\> on vs 2015 [\#734](https://github.com/nlohmann/json/issues/734)
+- Benchmarks for Binary formats [\#733](https://github.com/nlohmann/json/issues/733)
+- Support \n symbols in json string. [\#731](https://github.com/nlohmann/json/issues/731)
+- Project's name is too generic and hard to search for [\#730](https://github.com/nlohmann/json/issues/730)
+- Visual Studio 2015 IntelliTrace problems [\#729](https://github.com/nlohmann/json/issues/729)
+- How to erase nested objects inside other objects? [\#728](https://github.com/nlohmann/json/issues/728)
+- Serialization for CBOR [\#726](https://github.com/nlohmann/json/issues/726)
+- Using json Object as value in a map [\#725](https://github.com/nlohmann/json/issues/725)
+- std::regex and nlohmann::json value [\#724](https://github.com/nlohmann/json/issues/724)
+- Warnings when compiling with VisualStudio 2015 [\#723](https://github.com/nlohmann/json/issues/723)
+- Has this lib the unicode \(wstring\) support? [\#722](https://github.com/nlohmann/json/issues/722)
+- When will be 3.0 in master? [\#721](https://github.com/nlohmann/json/issues/721)
+- Determine the type from error message. [\#720](https://github.com/nlohmann/json/issues/720)
+- Compile-Error C2100 \(MS VS2015\) in line 887 json.hpp [\#719](https://github.com/nlohmann/json/issues/719)
+- from\_json not working for boost::optional example [\#718](https://github.com/nlohmann/json/issues/718)
+- about from\_json and to\_json function [\#717](https://github.com/nlohmann/json/issues/717)
+- How to detect parse failure? [\#715](https://github.com/nlohmann/json/issues/715)
+- Parse throw std::ios\_base::failure exception when failbit set to true [\#714](https://github.com/nlohmann/json/issues/714)
+- Is there a way of format just making a pretty print without changing the key's orders ? [\#713](https://github.com/nlohmann/json/issues/713)
+- Serialization of array of not same model items [\#712](https://github.com/nlohmann/json/issues/712)
+- pointer to json parse vector [\#711](https://github.com/nlohmann/json/issues/711)
+- Gtest SEH Exception [\#709](https://github.com/nlohmann/json/issues/709)
+- broken from\_json implementation for pair and tuple  [\#707](https://github.com/nlohmann/json/issues/707)
+- Unevaluated lambda in assert breaks gcc 7 build [\#705](https://github.com/nlohmann/json/issues/705)
+- Issues when adding values to firebase database [\#704](https://github.com/nlohmann/json/issues/704)
+- Floating point equality - revisited [\#703](https://github.com/nlohmann/json/issues/703)
+- Conversion from valarray\<double\> to json fails to build [\#702](https://github.com/nlohmann/json/issues/702)
+- internal compiler error \(gcc7\)  [\#701](https://github.com/nlohmann/json/issues/701)
+- One build system to rule them all [\#698](https://github.com/nlohmann/json/issues/698)
+- Generated nlohmann\_jsonConfig.cmake does not set JSON\_INCLUDE\_DIR [\#695](https://github.com/nlohmann/json/issues/695)
+- support the Chinese language in json string [\#694](https://github.com/nlohmann/json/issues/694)
+- NaN problem within develop branch [\#693](https://github.com/nlohmann/json/issues/693)
+- Please post example of specialization for boost::filesystem [\#692](https://github.com/nlohmann/json/issues/692)
+- Impossible to do an array of composite objects [\#691](https://github.com/nlohmann/json/issues/691)
+- How to save json to file? [\#690](https://github.com/nlohmann/json/issues/690)
+- my simple json parser [\#689](https://github.com/nlohmann/json/issues/689)
+- problem with new struct parsing syntax [\#688](https://github.com/nlohmann/json/issues/688)
+- Parse error while parse the json string contains  UTF 8 encoded document bytes string [\#684](https://github.com/nlohmann/json/issues/684)
+- \[question\] how to get a string value by pointer [\#683](https://github.com/nlohmann/json/issues/683)
+- create json object from string variable [\#681](https://github.com/nlohmann/json/issues/681)
+- adl\_serializer and CRTP [\#680](https://github.com/nlohmann/json/issues/680)
+- Is there a way to control the precision of serialized floating point numbers? [\#677](https://github.com/nlohmann/json/issues/677)
+- Is there a way to get the path of a value? [\#676](https://github.com/nlohmann/json/issues/676)
+- Could the parser locate errors to line? [\#675](https://github.com/nlohmann/json/issues/675)
+- There is performance inefficiency found by coverity tool json2.1.1/include/nlohmann/json.hpp [\#673](https://github.com/nlohmann/json/issues/673)
+- include problem, when cmake on osx [\#672](https://github.com/nlohmann/json/issues/672)
+- Operator= ambiguous in C++1z and GCC 7.1.1 [\#670](https://github.com/nlohmann/json/issues/670)
+- should't the cmake install target be to nlohman/json.hpp [\#668](https://github.com/nlohmann/json/issues/668)
+- deserialise from `std::vector` [\#667](https://github.com/nlohmann/json/issues/667)
+- How to iterate? [\#665](https://github.com/nlohmann/json/issues/665)
+- could this json lib work on windows? [\#664](https://github.com/nlohmann/json/issues/664)
+- How does from\_json work? [\#662](https://github.com/nlohmann/json/issues/662)
+- insert\(or merge\) object should replace same key , not ignore [\#661](https://github.com/nlohmann/json/issues/661)
+- Parse method doesn't handle newlines. [\#659](https://github.com/nlohmann/json/issues/659)
+- Compilation "note" on GCC 6 ARM [\#658](https://github.com/nlohmann/json/issues/658)
+- Adding additional push\_back/operator+= rvalue overloads for JSON object [\#657](https://github.com/nlohmann/json/issues/657)
+- dump's parameter "ensure\_ascii" creates too long sequences [\#656](https://github.com/nlohmann/json/issues/656)
+- Question: parsing `void *` [\#655](https://github.com/nlohmann/json/issues/655)
+- how should I check a string is valid JSON string ? [\#653](https://github.com/nlohmann/json/issues/653)
+- Question: thread safety of read only accesses [\#651](https://github.com/nlohmann/json/issues/651)
+- Eclipse: Method 'size' could not be resolved [\#649](https://github.com/nlohmann/json/issues/649)
+- Update/Add object fields [\#648](https://github.com/nlohmann/json/issues/648)
+- No exception raised for Out Of Range input of numbers [\#647](https://github.com/nlohmann/json/issues/647)
+- Package Name [\#646](https://github.com/nlohmann/json/issues/646)
+- What is the meaning of operator\[\]\(T\* key\) [\#645](https://github.com/nlohmann/json/issues/645)
+- Which is the correct way to json objects as parameters to functions? [\#644](https://github.com/nlohmann/json/issues/644)
+- Method to get string representations of values [\#642](https://github.com/nlohmann/json/issues/642)
+-  CBOR serialization of a given JSON value does not serialize [\#641](https://github.com/nlohmann/json/issues/641)
+- Are we forced to use "-fexceptions" flag in android ndk project [\#640](https://github.com/nlohmann/json/issues/640)
+- Comparison of objects containing floats [\#639](https://github.com/nlohmann/json/issues/639)
+- 'localeconv' is not supported by NDK for SDK  \<=20 [\#638](https://github.com/nlohmann/json/issues/638)
+- \[Question\] cLion integration [\#637](https://github.com/nlohmann/json/issues/637)
+- How to construct an iteratable usage in nlohmann json? [\#636](https://github.com/nlohmann/json/issues/636)
+- \[Question\] copy assign json-container to vector [\#635](https://github.com/nlohmann/json/issues/635)
+- Get size without .dump\(\) [\#634](https://github.com/nlohmann/json/issues/634)
+- Segmentation fault when parsing invalid json file [\#633](https://github.com/nlohmann/json/issues/633)
+- How to serialize from json to vector\<customType\>? [\#632](https://github.com/nlohmann/json/issues/632)
+- no member named 'thousands\_sep' in 'lconv' [\#631](https://github.com/nlohmann/json/issues/631)
+- \[Question\] Any fork for \(the unsupported\) Visual Studio 2012 version? [\#628](https://github.com/nlohmann/json/issues/628)
+- Dependency injection in serializer [\#627](https://github.com/nlohmann/json/issues/627)
+- from\_json for std::array [\#625](https://github.com/nlohmann/json/issues/625)
+- Discussion: How to structure the parsing function families [\#623](https://github.com/nlohmann/json/issues/623)
+- Question: How to erase subtree [\#622](https://github.com/nlohmann/json/issues/622)
+- Insertion into nested json field [\#621](https://github.com/nlohmann/json/issues/621)
+- Question: return static json object from function [\#618](https://github.com/nlohmann/json/issues/618)
+- icc16 error [\#617](https://github.com/nlohmann/json/issues/617)
+- \[-Wdeprecated-declarations\] in row `j >> ss;` in file `json.hpp:7405:26` and FAILED unit tests with MinGWx64! [\#616](https://github.com/nlohmann/json/issues/616)
+- to\_json for pairs, tuples [\#614](https://github.com/nlohmann/json/issues/614)
+- Using uninitialized memory 'buf' in line 11173 v2.1.1? [\#613](https://github.com/nlohmann/json/issues/613)
+- How to parse multiple same Keys of JSON and save them? [\#612](https://github.com/nlohmann/json/issues/612)
+- "Multiple declarations" error when using types defined with `typedef` [\#611](https://github.com/nlohmann/json/issues/611)
+- 2.1.1+ breaks compilation of shared\_ptr\<json\> == 0 [\#610](https://github.com/nlohmann/json/issues/610)
+- a bug of inheritance ?  [\#608](https://github.com/nlohmann/json/issues/608)
+- std::map key conversion with to\_json [\#607](https://github.com/nlohmann/json/issues/607)
+- json.hpp:6384:62: error: wrong number of template arguments \(1, should be 2\) [\#606](https://github.com/nlohmann/json/issues/606)
+- Incremental parsing: Where's the push version? [\#605](https://github.com/nlohmann/json/issues/605)
+- Is there a way to validate the structure of a json object ? [\#604](https://github.com/nlohmann/json/issues/604)
+- \[Question\] Issue when using Appveyor when compiling library [\#603](https://github.com/nlohmann/json/issues/603)
+- BOM not skipped when using json:parse\(iterator\) [\#602](https://github.com/nlohmann/json/issues/602)
+- Use of the binary type in CBOR and Message Pack [\#601](https://github.com/nlohmann/json/issues/601)
+- Newbie issue: how does one convert a map in Json back to std::map? [\#600](https://github.com/nlohmann/json/issues/600)
+- Plugin system [\#599](https://github.com/nlohmann/json/issues/599)
+- Using custom types for scalars? [\#596](https://github.com/nlohmann/json/issues/596)
+- Issues with the arithmetic in iterator and reverse iterator [\#593](https://github.com/nlohmann/json/issues/593)
+- not enough examples [\#592](https://github.com/nlohmann/json/issues/592)
+- in-class initialization for type 'const T' is not yet implemented [\#591](https://github.com/nlohmann/json/issues/591)
+- compiling with gcc 7 -\> error on bool operator \< [\#590](https://github.com/nlohmann/json/issues/590)
+- Parsing from stream leads to an array [\#589](https://github.com/nlohmann/json/issues/589)
+- Buggy support for binary string data [\#587](https://github.com/nlohmann/json/issues/587)
+- C++17's ambiguous conversion [\#586](https://github.com/nlohmann/json/issues/586)
+- How does the messagepack encoding/decoding compare to msgpack-cpp in terms of performance? [\#585](https://github.com/nlohmann/json/issues/585)
+- is it possible to check existence of a value deep in hierarchy? [\#584](https://github.com/nlohmann/json/issues/584)
+- loading from a stream and exceptions [\#582](https://github.com/nlohmann/json/issues/582)
+- Visual Studio seems not to have all min\(\) function versions [\#581](https://github.com/nlohmann/json/issues/581)
+- Supporting of the json schema [\#580](https://github.com/nlohmann/json/issues/580)
+- Stack-overflow \(OSS-Fuzz 1444\) [\#577](https://github.com/nlohmann/json/issues/577)
+- Heap-buffer-overflow \(OSS-Fuzz 1400\) [\#575](https://github.com/nlohmann/json/issues/575)
+- JSON escape quotes [\#574](https://github.com/nlohmann/json/issues/574)
+- error: static\_assert failed [\#573](https://github.com/nlohmann/json/issues/573)
+- Storing floats, and round trip serialisation/deserialisation diffs [\#572](https://github.com/nlohmann/json/issues/572)
+- JSON.getLong produces inconsistent results [\#571](https://github.com/nlohmann/json/issues/571)
+- Request: Object.at\(\) with default return value [\#570](https://github.com/nlohmann/json/issues/570)
+- Internal structure gets corrupted while parsing [\#569](https://github.com/nlohmann/json/issues/569)
+- create template \<typename Iter\> basic\_json from\_cbor\(Iter begin, Iter end\) [\#568](https://github.com/nlohmann/json/issues/568)
+- Conan.io [\#566](https://github.com/nlohmann/json/issues/566)
+- contradictory documentation regarding json::find [\#565](https://github.com/nlohmann/json/issues/565)
+- Unexpected '\"' in middle of array [\#564](https://github.com/nlohmann/json/issues/564)
+- Support parse std::pair to Json object [\#563](https://github.com/nlohmann/json/issues/563)
+- json and Microsoft Visual c++ Compiler Nov 2012 CTP [\#562](https://github.com/nlohmann/json/issues/562)
+- from\_json declaration order and exceptions [\#561](https://github.com/nlohmann/json/issues/561)
+- Tip: Don't upgrade to VS2017 if using json initializer list constructs [\#559](https://github.com/nlohmann/json/issues/559)
+- parse error - unexpected end of input [\#558](https://github.com/nlohmann/json/issues/558)
+- Cant modify existing numbers inside a json object [\#557](https://github.com/nlohmann/json/issues/557)
+- Better support for SAX style serialize and deserialize in new version? [\#554](https://github.com/nlohmann/json/issues/554)
+- Cannot convert from json array to std::array [\#553](https://github.com/nlohmann/json/issues/553)
+- Do not define an unnamed namespace in a header file \(DCL59-CPP\) [\#552](https://github.com/nlohmann/json/issues/552)
+- Parse error on known good json file [\#551](https://github.com/nlohmann/json/issues/551)
+- Warning on Intel compiler \(icc 17\) [\#550](https://github.com/nlohmann/json/issues/550)
+- multiple versions of 'vsnprintf' [\#549](https://github.com/nlohmann/json/issues/549)
+- illegal indirection [\#548](https://github.com/nlohmann/json/issues/548)
+- Ambiguous compare operators with clang-5.0 [\#547](https://github.com/nlohmann/json/issues/547)
+- Using tsl::ordered\_map [\#546](https://github.com/nlohmann/json/issues/546)
+- Compiler support errors are inconvenient [\#544](https://github.com/nlohmann/json/issues/544)
+- Duplicate symbols error happens while to\_json/from\_json method implemented inside entity definition header file [\#542](https://github.com/nlohmann/json/issues/542)
+- consider adding a bool json::is\_valid\(std::string const&\) non-member function [\#541](https://github.com/nlohmann/json/issues/541)
+- Help request [\#539](https://github.com/nlohmann/json/issues/539)
+- How to deal with missing keys in `from_json`? [\#538](https://github.com/nlohmann/json/issues/538)
+- recursive from\_msgpack implementation will stack overflow [\#537](https://github.com/nlohmann/json/issues/537)
+- Exception objects must be nothrow copy constructible \(ERR60-CPP\) [\#531](https://github.com/nlohmann/json/issues/531)
+- Support for multiple root elements [\#529](https://github.com/nlohmann/json/issues/529)
+- Port has\_shape from dropbox/json11 [\#528](https://github.com/nlohmann/json/issues/528)
+- dump\_float: truncation from ptrdiff\_t to long [\#527](https://github.com/nlohmann/json/issues/527)
+- Make exception base class visible in basic\_json [\#525](https://github.com/nlohmann/json/issues/525)
+- msgpack unit test failures on ppc64 arch [\#524](https://github.com/nlohmann/json/issues/524)
+- How about split the implementation out, and only leave the interface? [\#523](https://github.com/nlohmann/json/issues/523)
+- VC++2017 not enough actual parameters for macro 'max' [\#522](https://github.com/nlohmann/json/issues/522)
+- crash on empty ifstream [\#521](https://github.com/nlohmann/json/issues/521)
+- Suggestion: Support tabs for indentation when serializing to stream. [\#520](https://github.com/nlohmann/json/issues/520)
+- Abrt in get\_number \(OSS-Fuzz 885\) [\#519](https://github.com/nlohmann/json/issues/519)
+- Abrt on unknown address \(OSS-Fuzz 884\) [\#518](https://github.com/nlohmann/json/issues/518)
+- Stack-overflow \(OSS-Fuzz 869\) [\#517](https://github.com/nlohmann/json/issues/517)
+- Assertion error \(OSS-Fuzz 868\) [\#516](https://github.com/nlohmann/json/issues/516)
+- NaN to json and back [\#515](https://github.com/nlohmann/json/issues/515)
+- Comparison of NaN [\#514](https://github.com/nlohmann/json/issues/514)
+- why it's not possible to serialize c++11 enums directly [\#513](https://github.com/nlohmann/json/issues/513)
+- clang compile error: use of overloaded operator '\<=' is ambiguous   with \(nlohmann::json{{"a", 5}}\)\["a"\] \<= 10 [\#512](https://github.com/nlohmann/json/issues/512)
+- Why not also look inside the type for \(static\) to\_json and from\_json funtions? [\#511](https://github.com/nlohmann/json/issues/511)
+- Parser issues [\#509](https://github.com/nlohmann/json/issues/509)
+- I may not understand [\#507](https://github.com/nlohmann/json/issues/507)
+- VS2017 min / max problem for 2.1.1 [\#506](https://github.com/nlohmann/json/issues/506)
+- CBOR/MessagePack is not read until the end [\#505](https://github.com/nlohmann/json/issues/505)
+- Assertion error \(OSS-Fuzz 856\) [\#504](https://github.com/nlohmann/json/issues/504)
+- Return position in parse error exceptions [\#503](https://github.com/nlohmann/json/issues/503)
+- conversion from/to C array is not supported [\#502](https://github.com/nlohmann/json/issues/502)
+- error C2338: could not find to\_json\(\) method in T's namespace [\#501](https://github.com/nlohmann/json/issues/501)
+- Test suite fails in en\_GB.UTF-8 [\#500](https://github.com/nlohmann/json/issues/500)
+- cannot use operator\[\] with number [\#499](https://github.com/nlohmann/json/issues/499)
+- consider using \_\_cpp\_exceptions and/or \_\_EXCEPTIONS to disable/enable exception support [\#498](https://github.com/nlohmann/json/issues/498)
+- Stack-overflow \(OSS-Fuzz issue 814\) [\#497](https://github.com/nlohmann/json/issues/497)
+- Using in Unreal Engine - handling custom types conversion [\#495](https://github.com/nlohmann/json/issues/495)
+- Conversion from vector\<bool\> to json fails to build [\#494](https://github.com/nlohmann/json/issues/494)
+- fill\_line\_buffer incorrectly tests m\_stream for eof but not fail or bad bits [\#493](https://github.com/nlohmann/json/issues/493)
+- Compiling with \_GLIBCXX\_DEBUG yields iterator-comparison warnings during tests [\#492](https://github.com/nlohmann/json/issues/492)
+- crapy interface [\#491](https://github.com/nlohmann/json/issues/491)
+- Fix Visual Studo 2013 builds. [\#490](https://github.com/nlohmann/json/issues/490)
+- Failed to compile with -D\_GLIBCXX\_PARALLEL [\#489](https://github.com/nlohmann/json/issues/489)
+- Input several field with the same name [\#488](https://github.com/nlohmann/json/issues/488)
+- read in .json file yields strange sizes [\#487](https://github.com/nlohmann/json/issues/487)
+- json::value\_t can't be a map's key type in VC++ 2015 [\#486](https://github.com/nlohmann/json/issues/486)
+- Using fifo\_map [\#485](https://github.com/nlohmann/json/issues/485)
+- Cannot get float pointer for value stored as `0` [\#484](https://github.com/nlohmann/json/issues/484)
+- byte string support [\#483](https://github.com/nlohmann/json/issues/483)
+- https://github.com/nlohmann/json\#execute-unit-tests [\#481](https://github.com/nlohmann/json/issues/481)
+- Remove deprecated constructor basic\_json\(std::istream&\) [\#480](https://github.com/nlohmann/json/issues/480)
+- writing the binary json file? [\#479](https://github.com/nlohmann/json/issues/479)
+- CBOR/MessagePack from uint8\_t \* and size [\#478](https://github.com/nlohmann/json/issues/478)
+- Streaming binary representations  [\#477](https://github.com/nlohmann/json/issues/477)
+- Reuse memory in to\_cbor and to\_msgpack functions [\#476](https://github.com/nlohmann/json/issues/476)
+- Error Using JSON Library with arrays C++ [\#475](https://github.com/nlohmann/json/issues/475)
+- Moving forward to version 3.0.0 [\#474](https://github.com/nlohmann/json/issues/474)
+- Inconsistent behavior in conversion to array type [\#473](https://github.com/nlohmann/json/issues/473)
+- Create a \[key:member\_pointer\] map to ease parsing custom types [\#471](https://github.com/nlohmann/json/issues/471)
+- MSVC 2015 update 2 [\#469](https://github.com/nlohmann/json/issues/469)
+- VS2017 implicit to std::string conversion fix. [\#464](https://github.com/nlohmann/json/issues/464)
+- How to make sure a string or string literal is a valid JSON? [\#458](https://github.com/nlohmann/json/issues/458)
+- basic\_json templated on a "policy" class [\#456](https://github.com/nlohmann/json/issues/456)
+- json::value\(const json\_pointer&, ValueType\) requires exceptions to return the default value. [\#440](https://github.com/nlohmann/json/issues/440)
+- is it possible merge two json object [\#428](https://github.com/nlohmann/json/issues/428)
+- Is it possible to turn this into a shared library? [\#420](https://github.com/nlohmann/json/issues/420)
+- Further thoughts on performance improvements [\#418](https://github.com/nlohmann/json/issues/418)
+- nan number stored as null [\#388](https://github.com/nlohmann/json/issues/388)
+- Behavior of operator\>\> should more closely resemble that of built-in overloads. [\#367](https://github.com/nlohmann/json/issues/367)
+- Request: range-based-for over a json-object to expose .first/.second [\#350](https://github.com/nlohmann/json/issues/350)
+- feature wish: JSONPath [\#343](https://github.com/nlohmann/json/issues/343)
+- UTF-8/Unicode escape and dump [\#330](https://github.com/nlohmann/json/issues/330)
+- Serialized value not always can be parsed. [\#329](https://github.com/nlohmann/json/issues/329)
+- Is there a way to forward declare nlohmann::json? [\#314](https://github.com/nlohmann/json/issues/314)
+- Exception line [\#301](https://github.com/nlohmann/json/issues/301)
+- Do not throw exception when default\_value's type does not match the actual type [\#278](https://github.com/nlohmann/json/issues/278)
+- dump\(\) method doesn't work with a custom allocator [\#268](https://github.com/nlohmann/json/issues/268)
+- Readme documentation enhancements [\#248](https://github.com/nlohmann/json/issues/248)
+- Use user-defined exceptions [\#244](https://github.com/nlohmann/json/issues/244)
+- Incorrect C++11 allocator model support [\#161](https://github.com/nlohmann/json/issues/161)
+
+- :white\_check\_mark: re-added tests for algorithms [\#879](https://github.com/nlohmann/json/pull/879) ([nlohmann](https://github.com/nlohmann))
+- Overworked library toward 3.0.0 release [\#875](https://github.com/nlohmann/json/pull/875) ([nlohmann](https://github.com/nlohmann))
+- :rotating\_light: remove C4996 warnings \#872 [\#873](https://github.com/nlohmann/json/pull/873) ([nlohmann](https://github.com/nlohmann))
+- :boom: throwing an exception in case dump encounters a non-UTF-8 string \#838 [\#870](https://github.com/nlohmann/json/pull/870) ([nlohmann](https://github.com/nlohmann))
+- :memo: fixing documentation \#867 [\#868](https://github.com/nlohmann/json/pull/868) ([nlohmann](https://github.com/nlohmann))
+- iter\_impl template conformance with C++17 [\#860](https://github.com/nlohmann/json/pull/860) ([bogemic](https://github.com/bogemic))
+- Std allocator conformance cpp17 [\#856](https://github.com/nlohmann/json/pull/856) ([bogemic](https://github.com/bogemic))
+- cmake: use BUILD\_INTERFACE/INSTALL\_INTERFACE [\#855](https://github.com/nlohmann/json/pull/855) ([theodelrieu](https://github.com/theodelrieu))
+- to/from\_json: add a MSVC-specific static\_assert to force a stacktrace [\#854](https://github.com/nlohmann/json/pull/854) ([theodelrieu](https://github.com/theodelrieu))
+- Add .natvis for MSVC debug view [\#844](https://github.com/nlohmann/json/pull/844) ([TinyTinni](https://github.com/TinyTinni))
+- Updated hunter package links [\#829](https://github.com/nlohmann/json/pull/829) ([jowr](https://github.com/jowr))
+- Typos README [\#811](https://github.com/nlohmann/json/pull/811) ([Itja](https://github.com/Itja))
+- add forwarding references to json\_ref constructor [\#807](https://github.com/nlohmann/json/pull/807) ([theodelrieu](https://github.com/theodelrieu))
+- Add transparent comparator and perfect forwarding support to find\(\) and count\(\) [\#795](https://github.com/nlohmann/json/pull/795) ([jseward](https://github.com/jseward))
+- Error : 'identifier "size\_t" is undefined' in linux [\#793](https://github.com/nlohmann/json/pull/793) ([sonulohani](https://github.com/sonulohani))
+- Fix Visual Studio 2017 warnings [\#788](https://github.com/nlohmann/json/pull/788) ([jseward](https://github.com/jseward))
+- Fix warning C4706 on Visual Studio 2017 [\#785](https://github.com/nlohmann/json/pull/785) ([jseward](https://github.com/jseward))
+- Set GENERATE\_TAGFILE in Doxyfile [\#783](https://github.com/nlohmann/json/pull/783) ([eld00d](https://github.com/eld00d))
+- using more CMake [\#765](https://github.com/nlohmann/json/pull/765) ([nlohmann](https://github.com/nlohmann))
+- Simplified istream handing \#367 [\#764](https://github.com/nlohmann/json/pull/764) ([pjkundert](https://github.com/pjkundert))
+- Add info for the vcpkg package. [\#753](https://github.com/nlohmann/json/pull/753) ([gregmarr](https://github.com/gregmarr))
+- fix from\_json implementation for pair/tuple [\#708](https://github.com/nlohmann/json/pull/708) ([theodelrieu](https://github.com/theodelrieu))
+- Update json.hpp [\#686](https://github.com/nlohmann/json/pull/686) ([GoWebProd](https://github.com/GoWebProd))
+- Remove duplicate word [\#685](https://github.com/nlohmann/json/pull/685) ([daixtrose](https://github.com/daixtrose))
+- To fix compilation issue for intel OSX compiler [\#682](https://github.com/nlohmann/json/pull/682) ([kbthomp1](https://github.com/kbthomp1))
+- Digraph warning [\#679](https://github.com/nlohmann/json/pull/679) ([traits](https://github.com/traits))
+- massage -\> message [\#678](https://github.com/nlohmann/json/pull/678) ([DmitryKuk](https://github.com/DmitryKuk))
+- Fix "not constraint" grammar in docs [\#674](https://github.com/nlohmann/json/pull/674) ([wincent](https://github.com/wincent))
+- Add documentation for integration with CMake and hunter [\#671](https://github.com/nlohmann/json/pull/671) ([dan-42](https://github.com/dan-42))
+- REFACTOR: rewrite CMakeLists.txt for better inlcude and reuse [\#669](https://github.com/nlohmann/json/pull/669) ([dan-42](https://github.com/dan-42))
+- enable\_testing only if the JSON\_BuildTests is ON [\#666](https://github.com/nlohmann/json/pull/666) ([effolkronium](https://github.com/effolkronium))
+- Support moving from rvalues in std::initializer\_list [\#663](https://github.com/nlohmann/json/pull/663) ([himikof](https://github.com/himikof))
+- add ensure\_ascii parameter to dump. \#330 [\#654](https://github.com/nlohmann/json/pull/654) ([ryanjmulder](https://github.com/ryanjmulder))
+- Rename BuildTests to JSON\_BuildTests [\#652](https://github.com/nlohmann/json/pull/652) ([olegendo](https://github.com/olegendo))
+- Don't include \<iostream\>, use std::make\_shared [\#650](https://github.com/nlohmann/json/pull/650) ([olegendo](https://github.com/olegendo))
+- Refacto/split basic json [\#643](https://github.com/nlohmann/json/pull/643) ([theodelrieu](https://github.com/theodelrieu))
+- fix typo in operator\_\_notequal example [\#630](https://github.com/nlohmann/json/pull/630) ([Chocobo1](https://github.com/Chocobo1))
+- Fix MSVC warning C4819 [\#629](https://github.com/nlohmann/json/pull/629) ([Chocobo1](https://github.com/Chocobo1))
+- \[BugFix\] Add parentheses around std::min [\#626](https://github.com/nlohmann/json/pull/626) ([koemeet](https://github.com/koemeet))
+- add pair/tuple conversions [\#624](https://github.com/nlohmann/json/pull/624) ([theodelrieu](https://github.com/theodelrieu))
+- remove std::pair support [\#615](https://github.com/nlohmann/json/pull/615) ([theodelrieu](https://github.com/theodelrieu))
+- Add pair support, fix CompatibleObject conversions \(fixes \#600\) [\#609](https://github.com/nlohmann/json/pull/609) ([theodelrieu](https://github.com/theodelrieu))
+- \#550 Fix iterator related compiling issues for Intel icc [\#598](https://github.com/nlohmann/json/pull/598) ([HenryRLee](https://github.com/HenryRLee))
+- Issue \#593 Fix the arithmetic operators in the iterator and reverse iterator [\#595](https://github.com/nlohmann/json/pull/595) ([HenryRLee](https://github.com/HenryRLee))
+- fix doxygen error of basic\_json::get\(\) [\#583](https://github.com/nlohmann/json/pull/583) ([zhaohuaxishi](https://github.com/zhaohuaxishi))
+- Fixing assignement for iterator wrapper second, and adding unit test [\#579](https://github.com/nlohmann/json/pull/579) ([Type1J](https://github.com/Type1J))
+- Adding first and second properties to iteration\_proxy\_internal [\#578](https://github.com/nlohmann/json/pull/578) ([Type1J](https://github.com/Type1J))
+- Adding support for Meson. [\#576](https://github.com/nlohmann/json/pull/576) ([Type1J](https://github.com/Type1J))
+- add enum class default conversions [\#545](https://github.com/nlohmann/json/pull/545) ([theodelrieu](https://github.com/theodelrieu))
+- Properly pop diagnostics [\#540](https://github.com/nlohmann/json/pull/540) ([tinloaf](https://github.com/tinloaf))
+- Add Visual Studio 17 image to appveyor build matrix [\#536](https://github.com/nlohmann/json/pull/536) ([vpetrigo](https://github.com/vpetrigo))
+- UTF8 encoding enhancement [\#534](https://github.com/nlohmann/json/pull/534) ([TedLyngmo](https://github.com/TedLyngmo))
+- Fix typo [\#530](https://github.com/nlohmann/json/pull/530) ([berkus](https://github.com/berkus))
+- Make exception base class visible in basic\_json [\#526](https://github.com/nlohmann/json/pull/526) ([ghost](https://github.com/ghost))
+- :art: Namespace `uint8_t` from the C++ stdlib [\#510](https://github.com/nlohmann/json/pull/510) ([alexweej](https://github.com/alexweej))
+- add to\_json method for C arrays [\#508](https://github.com/nlohmann/json/pull/508) ([theodelrieu](https://github.com/theodelrieu))
+- Fix -Weffc++ warnings \(GNU 6.3.1\) [\#496](https://github.com/nlohmann/json/pull/496) ([TedLyngmo](https://github.com/TedLyngmo))
+
+## [v2.1.1](https://github.com/nlohmann/json/releases/tag/v2.1.1) (2017-02-25)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/2.1.1...v2.1.1)
+
+## [2.1.1](https://github.com/nlohmann/json/releases/tag/2.1.1) (2017-02-25)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.1.0...2.1.1)
+
+- warning in the library [\#472](https://github.com/nlohmann/json/issues/472)
+- How to create an array of Objects? [\#470](https://github.com/nlohmann/json/issues/470)
+- \[Bug?\] Cannot get int pointer, but int64\_t works [\#468](https://github.com/nlohmann/json/issues/468)
+- Illegal indirection [\#467](https://github.com/nlohmann/json/issues/467)
+- in vs can't find linkageId   [\#466](https://github.com/nlohmann/json/issues/466)
+- Roundtrip error while parsing "1000000000000000010E5" [\#465](https://github.com/nlohmann/json/issues/465)
+- C4996 error and warning with Visual Studio [\#463](https://github.com/nlohmann/json/issues/463)
+- Support startIndex for from\_cbor/from\_msgpack [\#462](https://github.com/nlohmann/json/issues/462)
+- question: monospace font used in feature slideshow? [\#460](https://github.com/nlohmann/json/issues/460)
+- Object.keys\(\) [\#459](https://github.com/nlohmann/json/issues/459)
+- Use “, “ as delimiter for json-objects. [\#457](https://github.com/nlohmann/json/issues/457)
+- Enum -\> string during serialization and vice versa [\#455](https://github.com/nlohmann/json/issues/455)
+- doubles are printed as integers [\#454](https://github.com/nlohmann/json/issues/454)
+- Warnings with Visual Studio c++ \(VS2015 Update 3\) [\#453](https://github.com/nlohmann/json/issues/453)
+- Heap-buffer-overflow \(OSS-Fuzz issue 585\) [\#452](https://github.com/nlohmann/json/issues/452)
+- use of undeclared identifier 'UINT8\_MAX' [\#451](https://github.com/nlohmann/json/issues/451)
+- Question on the lifetime managment of objects at the lower levels [\#449](https://github.com/nlohmann/json/issues/449)
+- Json should not be constructible with 'json\*' [\#448](https://github.com/nlohmann/json/issues/448)
+- Move value\_t to namespace scope [\#447](https://github.com/nlohmann/json/issues/447)
+- Typo in README.md [\#446](https://github.com/nlohmann/json/issues/446)
+- make check compilation is unneccesarily slow [\#445](https://github.com/nlohmann/json/issues/445)
+- Problem in dump\(\) in json.h caused by ss.imbue [\#444](https://github.com/nlohmann/json/issues/444)
+- I want to create Windows Application in Visual Studio 2015 c++, and i have a problem [\#443](https://github.com/nlohmann/json/issues/443)
+- Implicit conversion issues [\#442](https://github.com/nlohmann/json/issues/442)
+- Parsing of floats locale dependent [\#302](https://github.com/nlohmann/json/issues/302)
+
+- Speedup CI builds using cotire [\#461](https://github.com/nlohmann/json/pull/461) ([tusharpm](https://github.com/tusharpm))
+- TurpentineDistillery feature/locale independent str to num [\#450](https://github.com/nlohmann/json/pull/450) ([nlohmann](https://github.com/nlohmann))
+- README: adjust boost::optional example [\#439](https://github.com/nlohmann/json/pull/439) ([jaredgrubb](https://github.com/jaredgrubb))
+- fix \#414 - comparing to 0 literal [\#415](https://github.com/nlohmann/json/pull/415) ([stanmihai4](https://github.com/stanmihai4))
+- locale-independent num-to-str [\#378](https://github.com/nlohmann/json/pull/378) ([TurpentineDistillery](https://github.com/TurpentineDistillery))
+
+## [v2.1.0](https://github.com/nlohmann/json/releases/tag/v2.1.0) (2017-01-28)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/2.1.0...v2.1.0)
+
+## [2.1.0](https://github.com/nlohmann/json/releases/tag/2.1.0) (2017-01-28)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.10...2.1.0)
+
+- Parsing multiple JSON objects from a string or stream [\#438](https://github.com/nlohmann/json/issues/438)
+- Use-of-uninitialized-value \(OSS-Fuzz issue 477\) [\#437](https://github.com/nlohmann/json/issues/437)
+- add `reserve` function for array to reserve memory before adding json values into it [\#436](https://github.com/nlohmann/json/issues/436)
+- Typo in examples page [\#434](https://github.com/nlohmann/json/issues/434)
+- avoid malformed json [\#433](https://github.com/nlohmann/json/issues/433)
+- How to add json objects to a map? [\#432](https://github.com/nlohmann/json/issues/432)
+- create json instance from raw json \(unsigned char\*\) [\#431](https://github.com/nlohmann/json/issues/431)
+- Getting std::invalid\_argument: stream error when following example [\#429](https://github.com/nlohmann/json/issues/429)
+- Forward declare-only header? [\#427](https://github.com/nlohmann/json/issues/427)
+- Implicit conversion from array to object [\#425](https://github.com/nlohmann/json/issues/425)
+- error C4996: 'strerror' when reading file [\#422](https://github.com/nlohmann/json/issues/422)
+- Get an error - JSON pointer must be empty or begin with '/' [\#421](https://github.com/nlohmann/json/issues/421)
+- size parameter for parse\(\) [\#419](https://github.com/nlohmann/json/issues/419)
+- json.hpp forcibly defines GCC\_VERSION [\#417](https://github.com/nlohmann/json/issues/417)
+- Use-of-uninitialized-value \(OSS-Fuzz issue 377\) [\#416](https://github.com/nlohmann/json/issues/416)
+- comparing to 0 literal [\#414](https://github.com/nlohmann/json/issues/414)
+- Single char converted to ASCII code instead of string [\#413](https://github.com/nlohmann/json/issues/413)
+- How to know if a string  was parsed as utf-8? [\#406](https://github.com/nlohmann/json/issues/406)
+- Overloaded += to add objects to an array makes no sense? [\#404](https://github.com/nlohmann/json/issues/404)
+- Finding a value in an array [\#399](https://github.com/nlohmann/json/issues/399)
+- add release information in static function [\#397](https://github.com/nlohmann/json/issues/397)
+- Optimize memory usage of json objects in combination with binary serialization [\#373](https://github.com/nlohmann/json/issues/373)
+- Conversion operators not considered [\#369](https://github.com/nlohmann/json/issues/369)
+- Append ".0" to serialized floating\_point values that are digits-only. [\#362](https://github.com/nlohmann/json/issues/362)
+- Add a customization point for user-defined types [\#328](https://github.com/nlohmann/json/issues/328)
+- Conformance report for reference [\#307](https://github.com/nlohmann/json/issues/307)
+- Document the best way to serialize/deserialize user defined types to json [\#298](https://github.com/nlohmann/json/issues/298)
+- Add StringView template typename to basic\_json [\#297](https://github.com/nlohmann/json/issues/297)
+- \[Improvement\] Add option to remove exceptions [\#296](https://github.com/nlohmann/json/issues/296)
+- Performance in miloyip/nativejson-benchmark [\#202](https://github.com/nlohmann/json/issues/202)
+
+- conversion from/to user-defined types [\#435](https://github.com/nlohmann/json/pull/435) ([nlohmann](https://github.com/nlohmann))
+- Fix documentation error [\#430](https://github.com/nlohmann/json/pull/430) ([vjon](https://github.com/vjon))
+
+## [v2.0.10](https://github.com/nlohmann/json/releases/tag/v2.0.10) (2017-01-02)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/2.0.10...v2.0.10)
+
+## [2.0.10](https://github.com/nlohmann/json/releases/tag/2.0.10) (2017-01-02)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.9...2.0.10)
+
+- Heap-buffer-overflow \(OSS-Fuzz issue 367\) [\#412](https://github.com/nlohmann/json/issues/412)
+- Heap-buffer-overflow \(OSS-Fuzz issue 366\) [\#411](https://github.com/nlohmann/json/issues/411)
+- Use-of-uninitialized-value \(OSS-Fuzz issue 347\) [\#409](https://github.com/nlohmann/json/issues/409)
+- Heap-buffer-overflow \(OSS-Fuzz issue 344\) [\#408](https://github.com/nlohmann/json/issues/408)
+- Heap-buffer-overflow \(OSS-Fuzz issue 343\) [\#407](https://github.com/nlohmann/json/issues/407)
+- Heap-buffer-overflow \(OSS-Fuzz issue 342\) [\#405](https://github.com/nlohmann/json/issues/405)
+- strerror throwing error in compiler VS2015 [\#403](https://github.com/nlohmann/json/issues/403)
+- json::parse of std::string being underlined by Visual Studio [\#402](https://github.com/nlohmann/json/issues/402)
+- Explicitly getting string without .dump\(\)  [\#401](https://github.com/nlohmann/json/issues/401)
+- Possible to speed up json::parse? [\#398](https://github.com/nlohmann/json/issues/398)
+- the alphabetic order in the code influence console\_output. [\#396](https://github.com/nlohmann/json/issues/396)
+- Execute tests with clang sanitizers [\#394](https://github.com/nlohmann/json/issues/394)
+- Check if library can be used with ETL [\#361](https://github.com/nlohmann/json/issues/361)
+
+- Feature/clang sanitize [\#410](https://github.com/nlohmann/json/pull/410) ([Daniel599](https://github.com/Daniel599))
+- Add Doozer build badge [\#400](https://github.com/nlohmann/json/pull/400) ([andoma](https://github.com/andoma))
+
+## [v2.0.9](https://github.com/nlohmann/json/releases/tag/v2.0.9) (2016-12-16)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/2.0.9...v2.0.9)
+
+## [2.0.9](https://github.com/nlohmann/json/releases/tag/2.0.9) (2016-12-16)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.8...2.0.9)
+
+- \#pragma GCC diagnostic ignored "-Wdocumentation" [\#393](https://github.com/nlohmann/json/issues/393)
+- How to parse this json file and write separate sub object as json files? [\#392](https://github.com/nlohmann/json/issues/392)
+- Integer-overflow \(OSS-Fuzz issue 267\) [\#389](https://github.com/nlohmann/json/issues/389)
+- Implement indefinite-length types from RFC 7049 [\#387](https://github.com/nlohmann/json/issues/387)
+- template parameter "T" is not used in declaring the parameter types of function template [\#386](https://github.com/nlohmann/json/issues/386)
+- Serializing json instances containing already serialized string values without escaping [\#385](https://github.com/nlohmann/json/issues/385)
+- Add test cases from RFC 7049 [\#384](https://github.com/nlohmann/json/issues/384)
+- Add a table of contents to the README file [\#383](https://github.com/nlohmann/json/issues/383)
+- Update FAQ section in the guidelines for contributing [\#382](https://github.com/nlohmann/json/issues/382)
+- Allow for forward declaring nlohmann::json [\#381](https://github.com/nlohmann/json/issues/381)
+- Bug in overflow detection when parsing integers [\#380](https://github.com/nlohmann/json/issues/380)
+- A unique name to mention the library? [\#377](https://github.com/nlohmann/json/issues/377)
+- Non-unique keys in objects. [\#375](https://github.com/nlohmann/json/issues/375)
+- Request: binary serialization/deserialization [\#358](https://github.com/nlohmann/json/issues/358)
+
+- Replace class iterator and const\_iterator by using a single template class to reduce code. [\#395](https://github.com/nlohmann/json/pull/395) ([Bosswestfalen](https://github.com/Bosswestfalen))
+- Clang: quiet a warning [\#391](https://github.com/nlohmann/json/pull/391) ([jaredgrubb](https://github.com/jaredgrubb))
+- Fix issue \#380: Signed integer overflow check [\#390](https://github.com/nlohmann/json/pull/390) ([qwename](https://github.com/qwename))
+
+## [v2.0.8](https://github.com/nlohmann/json/releases/tag/v2.0.8) (2016-12-02)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/2.0.8...v2.0.8)
+
+## [2.0.8](https://github.com/nlohmann/json/releases/tag/2.0.8) (2016-12-02)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.7...2.0.8)
+
+- Reading from file [\#374](https://github.com/nlohmann/json/issues/374)
+- Compiler warnings? [\#372](https://github.com/nlohmann/json/issues/372)
+- docs: how to release a json object in memory? [\#371](https://github.com/nlohmann/json/issues/371)
+- crash in dump [\#370](https://github.com/nlohmann/json/issues/370)
+- Coverity issue \(FORWARD\_NULL\) in lexer\(std::istream& s\) [\#368](https://github.com/nlohmann/json/issues/368)
+- json::parse on failed stream gets stuck [\#366](https://github.com/nlohmann/json/issues/366)
+- Performance improvements [\#365](https://github.com/nlohmann/json/issues/365)
+- 'to\_string' is not a member of 'std'  [\#364](https://github.com/nlohmann/json/issues/364)
+- Crash in dump\(\) from a static object [\#359](https://github.com/nlohmann/json/issues/359)
+- json::parse\(...\) vs json j; j.parse\(...\) [\#357](https://github.com/nlohmann/json/issues/357)
+- Hi, is there any method to dump  json to string with the insert order rather than alphabets [\#356](https://github.com/nlohmann/json/issues/356)
+- Provide an example of reading from an json with only a key that has an array of strings. [\#354](https://github.com/nlohmann/json/issues/354)
+- Request: access with default value. [\#353](https://github.com/nlohmann/json/issues/353)
+- {} and \[\] causes parser error. [\#352](https://github.com/nlohmann/json/issues/352)
+- Reading a JSON file into a JSON object [\#351](https://github.com/nlohmann/json/issues/351)
+- Request: 'emplace\_back' [\#349](https://github.com/nlohmann/json/issues/349)
+- Is it possible to stream data through the json parser without storing everything in memory? [\#347](https://github.com/nlohmann/json/issues/347)
+- pure virtual conversion operator [\#346](https://github.com/nlohmann/json/issues/346)
+- Floating point precision lost [\#345](https://github.com/nlohmann/json/issues/345)
+- unit-conversions SIGSEGV on armv7hl [\#303](https://github.com/nlohmann/json/issues/303)
+- Coverity scan fails [\#299](https://github.com/nlohmann/json/issues/299)
+- Using QString as string type [\#274](https://github.com/nlohmann/json/issues/274)
+
+## [v2.0.7](https://github.com/nlohmann/json/releases/tag/v2.0.7) (2016-11-02)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.6...v2.0.7)
+
+- JSON5 [\#348](https://github.com/nlohmann/json/issues/348)
+- Check "Parsing JSON is a Minefield" [\#344](https://github.com/nlohmann/json/issues/344)
+- Allow hex numbers [\#342](https://github.com/nlohmann/json/issues/342)
+- Convert strings to numbers [\#341](https://github.com/nlohmann/json/issues/341)
+- ""-operators ignore the length parameter [\#340](https://github.com/nlohmann/json/issues/340)
+- JSON into std::tuple [\#339](https://github.com/nlohmann/json/issues/339)
+- JSON into vector [\#335](https://github.com/nlohmann/json/issues/335)
+- Installing with Homebrew on Mac Errors \(El Capitan\) [\#331](https://github.com/nlohmann/json/issues/331)
+- g++ make check results in error [\#312](https://github.com/nlohmann/json/issues/312)
+- Cannot convert from 'json' to 'char' [\#276](https://github.com/nlohmann/json/issues/276)
+- Please add a Pretty-Print option for arrays to stay always in one line [\#229](https://github.com/nlohmann/json/issues/229)
+- Conversion to STL map\<string, vector\<int\>\> gives error [\#220](https://github.com/nlohmann/json/issues/220)
+- std::unorderd\_map cannot be used as ObjectType [\#164](https://github.com/nlohmann/json/issues/164)
+
+- fix minor grammar/style issue in README.md [\#336](https://github.com/nlohmann/json/pull/336) ([seeekr](https://github.com/seeekr))
+
+## [v2.0.6](https://github.com/nlohmann/json/releases/tag/v2.0.6) (2016-10-15)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.5...v2.0.6)
+
+- How to handle json files? [\#333](https://github.com/nlohmann/json/issues/333)
+- This file requires compiler and library support .... [\#332](https://github.com/nlohmann/json/issues/332)
+- Segmentation fault on saving json to file [\#326](https://github.com/nlohmann/json/issues/326)
+- parse error - unexpected \<uninitialized\> with 2.0.5 [\#325](https://github.com/nlohmann/json/issues/325)
+- Add nested object capability to pointers [\#323](https://github.com/nlohmann/json/issues/323)
+- Fix usage examples' comments for std::multiset [\#322](https://github.com/nlohmann/json/issues/322)
+- json\_unit runs forever when executed in build directory [\#319](https://github.com/nlohmann/json/issues/319)
+- Visual studio 2015 update3 true != TRUE [\#317](https://github.com/nlohmann/json/issues/317)
+- releasing single header file in compressed format [\#316](https://github.com/nlohmann/json/issues/316)
+- json object from std::ifstream [\#315](https://github.com/nlohmann/json/issues/315)
+
+- make has\_mapped\_type struct friendly [\#324](https://github.com/nlohmann/json/pull/324) ([vpetrigo](https://github.com/vpetrigo))
+- Fix usage examples' comments for std::multiset [\#321](https://github.com/nlohmann/json/pull/321) ([vasild](https://github.com/vasild))
+- Include dir relocation [\#318](https://github.com/nlohmann/json/pull/318) ([ChristophJud](https://github.com/ChristophJud))
+- trivial documentation fix [\#313](https://github.com/nlohmann/json/pull/313) ([5tefan](https://github.com/5tefan))
+
+## [v2.0.5](https://github.com/nlohmann/json/releases/tag/v2.0.5) (2016-09-14)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.4...v2.0.5)
+
+- \[feature request\]: schema validator and comments [\#311](https://github.com/nlohmann/json/issues/311)
+- make json\_benchmarks no longer working in 2.0.4 [\#310](https://github.com/nlohmann/json/issues/310)
+- Segmentation fault \(core dumped\) [\#309](https://github.com/nlohmann/json/issues/309)
+- No matching member function for call to 'get\_impl' [\#308](https://github.com/nlohmann/json/issues/308)
+
+## [v2.0.4](https://github.com/nlohmann/json/releases/tag/v2.0.4) (2016-09-11)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.3...v2.0.4)
+
+- Parsing fails without space at end of file [\#306](https://github.com/nlohmann/json/issues/306)
+- json schema validator [\#305](https://github.com/nlohmann/json/issues/305)
+- Unused variable warning [\#304](https://github.com/nlohmann/json/issues/304)
+
+## [v2.0.3](https://github.com/nlohmann/json/releases/tag/v2.0.3) (2016-08-31)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.2...v2.0.3)
+
+- warning C4706: assignment within conditional expression [\#295](https://github.com/nlohmann/json/issues/295)
+- Q: Is it possible to build json tree from already UTF8 encoded values? [\#293](https://github.com/nlohmann/json/issues/293)
+- Equality operator results in array when assigned object [\#292](https://github.com/nlohmann/json/issues/292)
+- Support for integers not from the range \[-\(2\*\*53\)+1, \(2\*\*53\)-1\] in parser [\#291](https://github.com/nlohmann/json/issues/291)
+- Support for iterator-range parsing [\#290](https://github.com/nlohmann/json/issues/290)
+- Horribly inconsistent behavior between const/non-const reference in operator \[\] \(\) [\#289](https://github.com/nlohmann/json/issues/289)
+- Silently get numbers into smaller types [\#288](https://github.com/nlohmann/json/issues/288)
+- Incorrect parsing of large int64\_t numbers [\#287](https://github.com/nlohmann/json/issues/287)
+- \[question\]: macro to disable floating point support [\#284](https://github.com/nlohmann/json/issues/284)
+
+- unit-constructor1.cpp: Fix floating point truncation warning [\#300](https://github.com/nlohmann/json/pull/300) ([t-b](https://github.com/t-b))
+
+## [v2.0.2](https://github.com/nlohmann/json/releases/tag/v2.0.2) (2016-07-31)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.1...v2.0.2)
+
+- can function dump\(\)  return string in the order I push in the json object ? [\#286](https://github.com/nlohmann/json/issues/286)
+- Error on the Mac: Undefined symbols for architecture x86\_64 [\#285](https://github.com/nlohmann/json/issues/285)
+- value\(\) does not work with \_json\_pointer types [\#283](https://github.com/nlohmann/json/issues/283)
+- Build error for std::int64 [\#282](https://github.com/nlohmann/json/issues/282)
+- strings can't be accessed after dump\(\)-\>parse\(\) - type is lost [\#281](https://github.com/nlohmann/json/issues/281)
+- Easy serialization of classes [\#280](https://github.com/nlohmann/json/issues/280)
+- recursive data structures [\#277](https://github.com/nlohmann/json/issues/277)
+- hexify\(\) function emits conversion warning [\#270](https://github.com/nlohmann/json/issues/270)
+
+- let the makefile choose the correct sed [\#279](https://github.com/nlohmann/json/pull/279) ([murinicanor](https://github.com/murinicanor))
+- Update hexify to use array lookup instead of ternary \(\#270\) [\#275](https://github.com/nlohmann/json/pull/275) ([dtoma](https://github.com/dtoma))
+
+## [v2.0.1](https://github.com/nlohmann/json/releases/tag/v2.0.1) (2016-06-28)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v2.0.0...v2.0.1)
+
+- Compilation error. [\#273](https://github.com/nlohmann/json/issues/273)
+- dump\(\) performance degradation in v2 [\#272](https://github.com/nlohmann/json/issues/272)
+
+- fixed a tiny typo [\#271](https://github.com/nlohmann/json/pull/271) ([feroldi](https://github.com/feroldi))
+
+## [v2.0.0](https://github.com/nlohmann/json/releases/tag/v2.0.0) (2016-06-23)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v1.1.0...v2.0.0)
+
+- json::diff generates incorrect patch when removing multiple array elements. [\#269](https://github.com/nlohmann/json/issues/269)
+- Docs - What does Json\[key\] return? [\#267](https://github.com/nlohmann/json/issues/267)
+- Compiler Errors With JSON.hpp [\#265](https://github.com/nlohmann/json/issues/265)
+- Ambiguous push\_back and operator+= overloads [\#263](https://github.com/nlohmann/json/issues/263)
+- Preseving order of items in json [\#262](https://github.com/nlohmann/json/issues/262)
+- '\' char problem in strings [\#261](https://github.com/nlohmann/json/issues/261)
+- VS2015 compile fail [\#260](https://github.com/nlohmann/json/issues/260)
+- -Wconversion warning [\#259](https://github.com/nlohmann/json/issues/259)
+- Maybe a bug [\#258](https://github.com/nlohmann/json/issues/258)
+- Few tests failed on Visual C++ 2015 [\#257](https://github.com/nlohmann/json/issues/257)
+- Access keys when iteration with new for loop C++11 [\#256](https://github.com/nlohmann/json/issues/256)
+- multiline text values [\#255](https://github.com/nlohmann/json/issues/255)
+- Error when using json in g++ [\#254](https://github.com/nlohmann/json/issues/254)
+- is the release 2.0? [\#253](https://github.com/nlohmann/json/issues/253)
+- concatenate objects [\#252](https://github.com/nlohmann/json/issues/252)
+- Encoding [\#251](https://github.com/nlohmann/json/issues/251)
+- Unable to build example for constructing json object with stringstreams [\#250](https://github.com/nlohmann/json/issues/250)
+- Hexadecimal support [\#249](https://github.com/nlohmann/json/issues/249)
+- Update long-term goals [\#246](https://github.com/nlohmann/json/issues/246)
+- Contribution To This Json Project [\#245](https://github.com/nlohmann/json/issues/245)
+- Trouble using parser with initial dictionary [\#243](https://github.com/nlohmann/json/issues/243)
+- Unit test fails when doing a CMake out-of-tree build [\#241](https://github.com/nlohmann/json/issues/241)
+- -Wconversion warnings [\#239](https://github.com/nlohmann/json/issues/239)
+- Additional integration options [\#237](https://github.com/nlohmann/json/issues/237)
+- .get\<std::string\>\(\) works for non spaced string but returns as array for spaced/longer strings [\#236](https://github.com/nlohmann/json/issues/236)
+- ambiguous overload for 'push\_back' and 'operator+=' [\#235](https://github.com/nlohmann/json/issues/235)
+- Can't use basic\_json::iterator as a base iterator for std::move\_iterator [\#233](https://github.com/nlohmann/json/issues/233)
+- json object's creation can freezes execution [\#231](https://github.com/nlohmann/json/issues/231)
+- Incorrect dumping of parsed numbers with exponents, but without decimal places [\#230](https://github.com/nlohmann/json/issues/230)
+- double values are serialized with commas as decimal points [\#228](https://github.com/nlohmann/json/issues/228)
+- Move semantics with std::initializer\_list [\#225](https://github.com/nlohmann/json/issues/225)
+- replace emplace [\#224](https://github.com/nlohmann/json/issues/224)
+- abort during getline in yyfill [\#223](https://github.com/nlohmann/json/issues/223)
+- free\(\): invalid pointer error in GCC 5.2.1 [\#221](https://github.com/nlohmann/json/issues/221)
+- Error compile Android NDK  error: 'strtof' is not a member of 'std' [\#219](https://github.com/nlohmann/json/issues/219)
+- Wrong link in the README.md [\#217](https://github.com/nlohmann/json/issues/217)
+- Wide character strings not supported [\#216](https://github.com/nlohmann/json/issues/216)
+- Memory allocations using range-based for loops [\#214](https://github.com/nlohmann/json/issues/214)
+- would you like to support gcc 4.8.1?  [\#211](https://github.com/nlohmann/json/issues/211)
+- Reading concatenated json's from an istream [\#210](https://github.com/nlohmann/json/issues/210)
+- Conflicting typedef of ssize\_t on Windows 32 bit when using Boost.Python [\#204](https://github.com/nlohmann/json/issues/204)
+- Inconsistency between operator\[\] and push\_back [\#203](https://github.com/nlohmann/json/issues/203)
+- Small bugs in json.hpp \(get\_number\) and unit.cpp \(non-standard integer type test\) [\#199](https://github.com/nlohmann/json/issues/199)
+- GCC/clang floating point parsing bug in strtod\(\) [\#195](https://github.com/nlohmann/json/issues/195)
+- What is within scope? [\#192](https://github.com/nlohmann/json/issues/192)
+- Bugs in miloyip/nativejson-benchmark: roundtrips [\#187](https://github.com/nlohmann/json/issues/187)
+- Floating point exceptions [\#181](https://github.com/nlohmann/json/issues/181)
+- Integer conversion to unsigned [\#178](https://github.com/nlohmann/json/issues/178)
+- map string string fails to compile [\#176](https://github.com/nlohmann/json/issues/176)
+- In basic\_json::basic\_json\(const CompatibleArrayType& val\), the requirement of CompatibleArrayType is not strict enough. [\#174](https://github.com/nlohmann/json/issues/174)
+- Provide a FAQ [\#163](https://github.com/nlohmann/json/issues/163)
+- Implicit assignment to std::string fails [\#144](https://github.com/nlohmann/json/issues/144)
+
+- Fix Issue \#265 [\#266](https://github.com/nlohmann/json/pull/266) ([06needhamt](https://github.com/06needhamt))
+- Define CMake/CTest tests [\#247](https://github.com/nlohmann/json/pull/247) ([robertmrk](https://github.com/robertmrk))
+- Out of tree builds and a few other miscellaneous CMake cleanups. [\#242](https://github.com/nlohmann/json/pull/242) ([ChrisKitching](https://github.com/ChrisKitching))
+- Implement additional integration options [\#238](https://github.com/nlohmann/json/pull/238) ([robertmrk](https://github.com/robertmrk))
+- make serialization locale-independent [\#232](https://github.com/nlohmann/json/pull/232) ([nlohmann](https://github.com/nlohmann))
+- fixes \#223 by updating README.md [\#227](https://github.com/nlohmann/json/pull/227) ([kevin--](https://github.com/kevin--))
+- Use namespace std for int64\_t and uint64\_t [\#226](https://github.com/nlohmann/json/pull/226) ([lv-zheng](https://github.com/lv-zheng))
+- Added missing cerrno header to fix ERANGE compile error on android [\#222](https://github.com/nlohmann/json/pull/222) ([Teemperor](https://github.com/Teemperor))
+- Corrected readme [\#218](https://github.com/nlohmann/json/pull/218) ([Annihil](https://github.com/Annihil))
+- Create PULL\_REQUEST\_TEMPLATE.md [\#213](https://github.com/nlohmann/json/pull/213) ([whackashoe](https://github.com/whackashoe))
+- fixed noexcept; added constexpr [\#208](https://github.com/nlohmann/json/pull/208) ([nlohmann](https://github.com/nlohmann))
+- Add support for afl-fuzz testing [\#207](https://github.com/nlohmann/json/pull/207) ([mykter](https://github.com/mykter))
+- replaced ssize\_t occurrences with auto \(addresses \#204\) [\#205](https://github.com/nlohmann/json/pull/205) ([nlohmann](https://github.com/nlohmann))
+- Fixed issue \#199 - Small bugs in json.hpp \(get\_number\) and unit.cpp \(non-standard integer type test\) [\#200](https://github.com/nlohmann/json/pull/200) ([twelsby](https://github.com/twelsby))
+- Fix broken link [\#197](https://github.com/nlohmann/json/pull/197) ([vog](https://github.com/vog))
+- Issue \#195 - update Travis to Trusty due to gcc/clang strtod\(\) bug [\#196](https://github.com/nlohmann/json/pull/196) ([twelsby](https://github.com/twelsby))
+- Issue \#178 - Extending support to full uint64\_t/int64\_t range and unsigned type \(updated\) [\#193](https://github.com/nlohmann/json/pull/193) ([twelsby](https://github.com/twelsby))
+
+## [v1.1.0](https://github.com/nlohmann/json/releases/tag/v1.1.0) (2016-01-24)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v1.0.0...v1.1.0)
+
+- Small error in pull \#185 [\#194](https://github.com/nlohmann/json/issues/194)
+- Bugs in miloyip/nativejson-benchmark: floating-point parsing [\#186](https://github.com/nlohmann/json/issues/186)
+- Floating point equality [\#185](https://github.com/nlohmann/json/issues/185)
+- Unused variables in catch [\#180](https://github.com/nlohmann/json/issues/180)
+- Typo in documentation [\#179](https://github.com/nlohmann/json/issues/179)
+- JSON performance benchmark comparision [\#177](https://github.com/nlohmann/json/issues/177)
+- Since re2c is often ignored in pull requests, it may make sense to make a contributing.md file [\#175](https://github.com/nlohmann/json/issues/175)
+- Question about exceptions [\#173](https://github.com/nlohmann/json/issues/173)
+- Android? [\#172](https://github.com/nlohmann/json/issues/172)
+- Cannot index by key of type static constexpr const char\* [\#171](https://github.com/nlohmann/json/issues/171)
+- Add assertions [\#168](https://github.com/nlohmann/json/issues/168)
+- MSVC 2015 build fails when attempting to compare object\_t [\#167](https://github.com/nlohmann/json/issues/167)
+- Member detector is not portable [\#166](https://github.com/nlohmann/json/issues/166)
+- Unnecessary const\_cast [\#162](https://github.com/nlohmann/json/issues/162)
+- Question about get\_ref\(\) [\#128](https://github.com/nlohmann/json/issues/128)
+- range based for loop for objects [\#83](https://github.com/nlohmann/json/issues/83)
+- Consider submitting this to the Boost Library Incubator [\#66](https://github.com/nlohmann/json/issues/66)
+
+- Fixed Issue \#186 - add strto\(f|d|ld\) overload wrappers, "-0.0" special case and FP trailing zero [\#191](https://github.com/nlohmann/json/pull/191) ([twelsby](https://github.com/twelsby))
+- Issue \#185 - remove approx\(\) and use \#pragma to kill warnings [\#190](https://github.com/nlohmann/json/pull/190) ([twelsby](https://github.com/twelsby))
+- Fixed Issue \#171 - added two extra template overloads of operator\[\] for T\* arguments [\#189](https://github.com/nlohmann/json/pull/189) ([twelsby](https://github.com/twelsby))
+- Fixed issue \#167 - removed operator ValueType\(\) condition for VS2015 [\#188](https://github.com/nlohmann/json/pull/188) ([twelsby](https://github.com/twelsby))
+- Implementation of get\_ref\(\) [\#184](https://github.com/nlohmann/json/pull/184) ([dariomt](https://github.com/dariomt))
+- Fixed some typos in CONTRIBUTING.md [\#182](https://github.com/nlohmann/json/pull/182) ([nibroc](https://github.com/nibroc))
+
+## [v1.0.0](https://github.com/nlohmann/json/releases/tag/v1.0.0) (2015-12-27)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/v1.0.0-rc1...v1.0.0)
+
+- add key name to exception [\#160](https://github.com/nlohmann/json/issues/160)
+- Getting member discarding qualifyer [\#159](https://github.com/nlohmann/json/issues/159)
+- basic\_json::iterator::value\(\) output includes quotes while basic\_json::iterator::key\(\) doesn't [\#158](https://github.com/nlohmann/json/issues/158)
+- Indexing `const basic_json<>` with `const basic_string<char>` [\#157](https://github.com/nlohmann/json/issues/157)
+- token\_type\_name\(token\_type t\): not all control paths return a value [\#156](https://github.com/nlohmann/json/issues/156)
+- prevent json.hpp from emitting compiler warnings [\#154](https://github.com/nlohmann/json/issues/154)
+- json::parse\(string\) does not check utf8 bom [\#152](https://github.com/nlohmann/json/issues/152)
+- unsigned 64bit values output as signed [\#151](https://github.com/nlohmann/json/issues/151)
+- Wish feature: json5 [\#150](https://github.com/nlohmann/json/issues/150)
+- Unable to compile on MSVC 2015 with SDL checking enabled: This function or variable may be unsafe. [\#149](https://github.com/nlohmann/json/issues/149)
+- "Json Object" type does not keep object order [\#148](https://github.com/nlohmann/json/issues/148)
+- dump\(\)  convert strings encoded by utf-8 to shift-jis on windows 10.  [\#147](https://github.com/nlohmann/json/issues/147)
+- Unable to get field names in a json object [\#145](https://github.com/nlohmann/json/issues/145)
+- Question: Is the use of incomplete type correct? [\#138](https://github.com/nlohmann/json/issues/138)
+- json.hpp:5746:32: error: 'to\_string' is not a member of 'std' [\#136](https://github.com/nlohmann/json/issues/136)
+- Bug in basic\_json::operator\[\] const overload [\#135](https://github.com/nlohmann/json/issues/135)
+- wrong enable\_if for const pointer \(instead of pointer-to-const\) [\#134](https://github.com/nlohmann/json/issues/134)
+- overload of at\(\) with default value [\#133](https://github.com/nlohmann/json/issues/133)
+- Splitting source [\#132](https://github.com/nlohmann/json/issues/132)
+- Question about get\_ptr\(\) [\#127](https://github.com/nlohmann/json/issues/127)
+- Visual Studio 14 Debug assertion failed [\#125](https://github.com/nlohmann/json/issues/125)
+- Memory leak in face of exceptions [\#118](https://github.com/nlohmann/json/issues/118)
+- Find and Count for arrays [\#117](https://github.com/nlohmann/json/issues/117)
+- dynamically constructing an arbitrarily nested object [\#114](https://github.com/nlohmann/json/issues/114)
+- Returning any data type [\#113](https://github.com/nlohmann/json/issues/113)
+- Compile error with g++ 4.9.3 cygwin 64-bit [\#112](https://github.com/nlohmann/json/issues/112)
+- insert json array issue with gcc4.8.2 [\#110](https://github.com/nlohmann/json/issues/110)
+- error: unterminated raw string [\#109](https://github.com/nlohmann/json/issues/109)
+- vector\<json\> copy constructor really weird [\#108](https://github.com/nlohmann/json/issues/108)
+- \[clang-3.6.2\] string/sstream with number to json issue [\#107](https://github.com/nlohmann/json/issues/107)
+- object field accessors [\#103](https://github.com/nlohmann/json/issues/103)
+- v8pp and json [\#95](https://github.com/nlohmann/json/issues/95)
+- Wishlist [\#65](https://github.com/nlohmann/json/issues/65)
+- Windows/Visual Studio \(through 2013\) is unsupported [\#62](https://github.com/nlohmann/json/issues/62)
+
+- Replace sprintf with hex function, this fixes \#149 [\#153](https://github.com/nlohmann/json/pull/153) ([whackashoe](https://github.com/whackashoe))
+- Fix character skipping after a surrogate pair [\#146](https://github.com/nlohmann/json/pull/146) ([robertmrk](https://github.com/robertmrk))
+- Detect correctly pointer-to-const [\#137](https://github.com/nlohmann/json/pull/137) ([dariomt](https://github.com/dariomt))
+- disabled "CopyAssignable" test for MSVC in Debug mode, see \#125 [\#131](https://github.com/nlohmann/json/pull/131) ([dariomt](https://github.com/dariomt))
+- removed stream operator for iterator, resolution for \#125 [\#130](https://github.com/nlohmann/json/pull/130) ([dariomt](https://github.com/dariomt))
+- fixed typos in comments for examples [\#129](https://github.com/nlohmann/json/pull/129) ([dariomt](https://github.com/dariomt))
+- Remove superfluous inefficiency [\#126](https://github.com/nlohmann/json/pull/126) ([d-frey](https://github.com/d-frey))
+- remove invalid parameter '-stdlib=libc++' in CMakeLists.txt [\#124](https://github.com/nlohmann/json/pull/124) ([emvivre](https://github.com/emvivre))
+- exception-safe object creation, fixes \#118 [\#122](https://github.com/nlohmann/json/pull/122) ([d-frey](https://github.com/d-frey))
+- Fix small oversight. [\#121](https://github.com/nlohmann/json/pull/121) ([ColinH](https://github.com/ColinH))
+- Overload parse\(\) to accept an rvalue reference [\#120](https://github.com/nlohmann/json/pull/120) ([silverweed](https://github.com/silverweed))
+- Use the right variable name in doc string [\#115](https://github.com/nlohmann/json/pull/115) ([whoshuu](https://github.com/whoshuu))
+
+## [v1.0.0-rc1](https://github.com/nlohmann/json/releases/tag/v1.0.0-rc1) (2015-07-26)
+
+[Full Changelog](https://github.com/nlohmann/json/compare/4502e7e51c0569419c26e75fbdd5748170603e54...v1.0.0-rc1)
+
+- Finish documenting the public interface in Doxygen [\#102](https://github.com/nlohmann/json/issues/102)
+- Binary string causes numbers to be dumped as hex [\#101](https://github.com/nlohmann/json/issues/101)
+- failed to iterator json object with reverse\_iterator [\#100](https://github.com/nlohmann/json/issues/100)
+- 'noexcept' : unknown override specifier [\#99](https://github.com/nlohmann/json/issues/99)
+- json float parsing problem [\#98](https://github.com/nlohmann/json/issues/98)
+- Adjust wording to JSON RFC [\#97](https://github.com/nlohmann/json/issues/97)
+- static analysis warnings [\#94](https://github.com/nlohmann/json/issues/94)
+- reverse\_iterator operator inheritance problem [\#93](https://github.com/nlohmann/json/issues/93)
+- init error [\#92](https://github.com/nlohmann/json/issues/92)
+- access by \(const\) reference [\#91](https://github.com/nlohmann/json/issues/91)
+- is\_integer and is\_float tests [\#90](https://github.com/nlohmann/json/issues/90)
+- Nonstandard integer type [\#89](https://github.com/nlohmann/json/issues/89)
+- static library build [\#84](https://github.com/nlohmann/json/issues/84)
+- lexer::get\_number return NAN [\#82](https://github.com/nlohmann/json/issues/82)
+- MinGW have no std::to\_string [\#80](https://github.com/nlohmann/json/issues/80)
+- Incorrect behaviour of basic\_json::count method [\#78](https://github.com/nlohmann/json/issues/78)
+- Invoking is\_array\(\) function creates "null" value [\#77](https://github.com/nlohmann/json/issues/77)
+- dump\(\) / parse\(\) not idempotent [\#76](https://github.com/nlohmann/json/issues/76)
+- Handle infinity and NaN cases [\#70](https://github.com/nlohmann/json/issues/70)
+- errors in g++-4.8.1 [\#68](https://github.com/nlohmann/json/issues/68)
+- Keys when iterating over objects [\#67](https://github.com/nlohmann/json/issues/67)
+- Compilation results in tons of warnings [\#64](https://github.com/nlohmann/json/issues/64)
+- Complete brief documentation [\#61](https://github.com/nlohmann/json/issues/61)
+- Double quotation mark is not parsed correctly [\#60](https://github.com/nlohmann/json/issues/60)
+- Get coverage back to 100% [\#58](https://github.com/nlohmann/json/issues/58)
+- erase elements using iterators [\#57](https://github.com/nlohmann/json/issues/57)
+- Removing item from array [\#56](https://github.com/nlohmann/json/issues/56)
+- Serialize/Deserialize like PHP? [\#55](https://github.com/nlohmann/json/issues/55)
+- Numbers as keys [\#54](https://github.com/nlohmann/json/issues/54)
+- Why are elements alphabetized on key while iterating? [\#53](https://github.com/nlohmann/json/issues/53)
+- Document erase, count, and iterators key and value [\#52](https://github.com/nlohmann/json/issues/52)
+- Do not use std::to\_string [\#51](https://github.com/nlohmann/json/issues/51)
+- Supported compilers [\#50](https://github.com/nlohmann/json/issues/50)
+- Confused about iterating through json objects [\#49](https://github.com/nlohmann/json/issues/49)
+- Use non-member begin/end [\#48](https://github.com/nlohmann/json/issues/48)
+- Erase key [\#47](https://github.com/nlohmann/json/issues/47)
+- Key iterator [\#46](https://github.com/nlohmann/json/issues/46)
+- Add count member function [\#45](https://github.com/nlohmann/json/issues/45)
+- Problem getting vector \(array\) of strings [\#44](https://github.com/nlohmann/json/issues/44)
+- Compilation error due to assuming that private=public [\#43](https://github.com/nlohmann/json/issues/43)
+- Use of deprecated implicit copy constructor [\#42](https://github.com/nlohmann/json/issues/42)
+- Printing attribute names [\#39](https://github.com/nlohmann/json/issues/39)
+- dumping a small number\_float just outputs 0.000000 [\#37](https://github.com/nlohmann/json/issues/37)
+- find is error [\#32](https://github.com/nlohmann/json/issues/32)
+- Avoid using spaces when encoding without pretty print [\#31](https://github.com/nlohmann/json/issues/31)
+- Cannot encode long numbers [\#30](https://github.com/nlohmann/json/issues/30)
+- segmentation fault when iterating over empty arrays/objects [\#28](https://github.com/nlohmann/json/issues/28)
+- Creating an empty array [\#27](https://github.com/nlohmann/json/issues/27)
+- Custom allocator support [\#25](https://github.com/nlohmann/json/issues/25)
+- make the type of the used string container customizable [\#20](https://github.com/nlohmann/json/issues/20)
+- Improper parsing of JSON string "\\" [\#17](https://github.com/nlohmann/json/issues/17)
+- create a header-only version [\#16](https://github.com/nlohmann/json/issues/16)
+- Don't return "const values" [\#15](https://github.com/nlohmann/json/issues/15)
+- Add to\_string overload for indentation [\#13](https://github.com/nlohmann/json/issues/13)
+- string parser does not recognize uncompliant strings [\#12](https://github.com/nlohmann/json/issues/12)
+- possible double-free in find function [\#11](https://github.com/nlohmann/json/issues/11)
+- UTF-8 encoding/deconding/testing [\#10](https://github.com/nlohmann/json/issues/10)
+- move code into namespace [\#9](https://github.com/nlohmann/json/issues/9)
+- free functions for explicit objects and arrays in initializer lists [\#8](https://github.com/nlohmann/json/issues/8)
+- unique\_ptr for ownership [\#7](https://github.com/nlohmann/json/issues/7)
+- Add unit tests [\#4](https://github.com/nlohmann/json/issues/4)
+- Drop C++98 support [\#3](https://github.com/nlohmann/json/issues/3)
+- Test case coverage [\#2](https://github.com/nlohmann/json/issues/2)
+- Runtime error in Travis job [\#1](https://github.com/nlohmann/json/issues/1)
+
+- Keyword 'inline' is useless when member functions are defined in headers [\#87](https://github.com/nlohmann/json/pull/87) ([ahamez](https://github.com/ahamez))
+- Remove useless typename [\#86](https://github.com/nlohmann/json/pull/86) ([ahamez](https://github.com/ahamez))
+- Avoid warning with Xcode's clang [\#85](https://github.com/nlohmann/json/pull/85) ([ahamez](https://github.com/ahamez))
+-  Fix typos [\#73](https://github.com/nlohmann/json/pull/73) ([aqnouch](https://github.com/aqnouch))
+- Replace `default_callback` function with `nullptr` and check for null… [\#72](https://github.com/nlohmann/json/pull/72) ([aburgh](https://github.com/aburgh))
+- support enum [\#71](https://github.com/nlohmann/json/pull/71) ([likebeta](https://github.com/likebeta))
+- Fix performance regression introduced with the parsing callback feature. [\#69](https://github.com/nlohmann/json/pull/69) ([aburgh](https://github.com/aburgh))
+- Improve the implementations of the comparission-operators [\#63](https://github.com/nlohmann/json/pull/63) ([Florianjw](https://github.com/Florianjw))
+- Fix compilation of json\_unit with GCC 5 [\#59](https://github.com/nlohmann/json/pull/59) ([dkopecek](https://github.com/dkopecek))
+- Parse streams incrementally. [\#40](https://github.com/nlohmann/json/pull/40) ([aburgh](https://github.com/aburgh))
+- Feature/small float serialization [\#38](https://github.com/nlohmann/json/pull/38) ([jrandall](https://github.com/jrandall))
+- template version with re2c scanner [\#36](https://github.com/nlohmann/json/pull/36) ([nlohmann](https://github.com/nlohmann))
+- more descriptive documentation in example [\#33](https://github.com/nlohmann/json/pull/33) ([luxe](https://github.com/luxe))
+- Fix string conversion under Clang [\#26](https://github.com/nlohmann/json/pull/26) ([wancw](https://github.com/wancw))
+- Fixed dumping of strings [\#24](https://github.com/nlohmann/json/pull/24) ([Teemperor](https://github.com/Teemperor))
+- Added a remark to the readme that coverage is GCC only for now [\#23](https://github.com/nlohmann/json/pull/23) ([Teemperor](https://github.com/Teemperor))
+- Unicode escaping [\#22](https://github.com/nlohmann/json/pull/22) ([Teemperor](https://github.com/Teemperor))
+- Implemented the JSON spec for string parsing for everything but the \uXXXX escaping [\#21](https://github.com/nlohmann/json/pull/21) ([Teemperor](https://github.com/Teemperor))
+- add the std iterator typedefs to iterator and const\_iterator [\#19](https://github.com/nlohmann/json/pull/19) ([kirkshoop](https://github.com/kirkshoop))
+- Fixed escaped quotes [\#18](https://github.com/nlohmann/json/pull/18) ([Teemperor](https://github.com/Teemperor))
+- Fix double delete on std::bad\_alloc exception [\#14](https://github.com/nlohmann/json/pull/14) ([elliotgoodrich](https://github.com/elliotgoodrich))
+- Added CMake and lcov [\#6](https://github.com/nlohmann/json/pull/6) ([Teemperor](https://github.com/Teemperor))
+- Version 2.0 [\#5](https://github.com/nlohmann/json/pull/5) ([nlohmann](https://github.com/nlohmann))
+
+
+
+\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSE.MIT b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSE.MIT
new file mode 100644
index 00000000..ee11a231
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSE.MIT
@@ -0,0 +1,21 @@
+MIT License 
+
+Copyright (c) 2013-2024 Niels Lohmann
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/Apache-2.0.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/Apache-2.0.txt
new file mode 100644
index 00000000..137069b8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/Apache-2.0.txt
@@ -0,0 +1,73 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution."
+
+"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:
+
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+
+     (b) You must cause any modified files to carry prominent notices stating that You changed the files; and
+
+     (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and
+
+     (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License.
+
+     You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!)  The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives.
+
+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/BSD-3-Clause.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/BSD-3-Clause.txt
new file mode 100644
index 00000000..ea890afb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/BSD-3-Clause.txt
@@ -0,0 +1,11 @@
+Copyright (c) <year> <owner>. 
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/GPL-3.0-only.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/GPL-3.0-only.txt
new file mode 100644
index 00000000..d41c0bd9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/GPL-3.0-only.txt
@@ -0,0 +1,232 @@
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
+
+Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+
+Preamble
+
+The GNU General Public License is a free, copyleft license for software and other kinds of works.
+
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
+
+To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.
+
+For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.
+
+Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it.
+
+For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.
+
+Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users.
+
+Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.
+
+The precise terms and conditions for copying, distribution and modification follow.
+
+TERMS AND CONDITIONS
+
+0. Definitions.
+
+“This License” refers to version 3 of the GNU General Public License.
+
+“Copyright” also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
+
+“The Program” refers to any copyrightable work licensed under this License. Each licensee is addressed as “you”. “Licensees” and “recipients” may be individuals or organizations.
+
+To “modify” a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a “modified version” of the earlier work or a work “based on” the earlier work.
+
+A “covered work” means either the unmodified Program or a work based on the Program.
+
+To “propagate” a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.
+
+To “convey” a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.
+
+An interactive user interface displays “Appropriate Legal Notices” to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion.
+
+1. Source Code.
+The “source code” for a work means the preferred form of the work for making modifications to it. “Object code” means any non-source form of a work.
+
+A “Standard Interface” means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.
+
+The “System Libraries” of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A “Major Component”, in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.
+
+The “Corresponding Source” for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.
+
+The Corresponding Source for a work in source code form is that same work.
+
+2. Basic Permissions.
+All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary.
+
+3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.
+
+When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures.
+
+4. Conveying Verbatim Copies.
+You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.
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+5. Conveying Modified Source Versions.
+You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:
+
+     a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
+
+     b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”.
+
+     c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
+
+     d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.
+
+A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.
+
+6. Conveying Non-Source Forms.
+You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:
+
+     a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
+
+     b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge.
+
+     c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.
+
+     d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements.
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+A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, “normally used” refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product.
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+If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM).
+
+The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.
+
+Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying.
+
+7. Additional Terms.
+“Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:
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+     a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
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+     b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
+
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+
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+
+All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.
+
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+
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.
+
+8. Termination.
+You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.
+
+9. Acceptance Not Required for Having Copies.
+You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
+
+10. Automatic Licensing of Downstream Recipients.
+Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.
+
+An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
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+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
+
+11. Patents.
+A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's “contributor version”.
+
+A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, “control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
+
+In the following three paragraphs, a “patent license” is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To “grant” such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
+
+A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+
+13. Use with the GNU Affero General Public License.
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.
+
+14. Revised Versions of this License.
+The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License “or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
+
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+
+15. Disclaimer of Warranty.
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
+
+     <one line to give the program's name and a brief idea of what it does.>
+     Copyright (C) <year>  <name of author>
+
+     This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+     This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+     You should have received a copy of the GNU General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
+
+     <program>  Copyright (C) <year>  <name of author>
+     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+     This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
+
+You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <http://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/MIT.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/MIT.txt
new file mode 100644
index 00000000..2071b23b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/LICENSES/MIT.txt
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) <year> <copyright holders>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/Makefile b/ohos/vap/vap_module/src/main/cpp/include/util/json/Makefile
new file mode 100644
index 00000000..e4dcb22d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/Makefile
@@ -0,0 +1,284 @@
+.PHONY: pretty clean ChangeLog.md release
+
+##########################################################################
+# configuration
+##########################################################################
+
+# find GNU sed to use `-i` parameter
+SED:=$(shell command -v gsed || which sed)
+
+
+##########################################################################
+# source files
+##########################################################################
+
+# the list of sources in the include folder
+SRCS=$(shell find include -type f | sort)
+
+# the list of sources in the tests folder
+TESTS_SRCS=$(shell find tests -type f \( -name '*.hpp' -o -name '*.cpp' -o -name '*.cu' \) -not -path 'tests/thirdparty/*' -not -path 'tests/abi/include/nlohmann/*' | sort)
+
+# the single headers (amalgamated from the source files)
+AMALGAMATED_FILE=single_include/nlohmann/json.hpp
+AMALGAMATED_FWD_FILE=single_include/nlohmann/json_fwd.hpp
+
+
+##########################################################################
+# documentation of the Makefile's targets
+##########################################################################
+
+# main target
+all:
+	@echo "amalgamate - amalgamate files single_include/nlohmann/json{,_fwd}.hpp from the include/nlohmann sources"
+	@echo "ChangeLog.md - generate ChangeLog file"
+	@echo "check-amalgamation - check whether sources have been amalgamated"
+	@echo "clean - remove built files"
+	@echo "doctest - compile example files and check their output"
+	@echo "fuzz_testing - prepare fuzz testing of the JSON parser"
+	@echo "fuzz_testing_bson - prepare fuzz testing of the BSON parser"
+	@echo "fuzz_testing_cbor - prepare fuzz testing of the CBOR parser"
+	@echo "fuzz_testing_msgpack - prepare fuzz testing of the MessagePack parser"
+	@echo "fuzz_testing_ubjson - prepare fuzz testing of the UBJSON parser"
+	@echo "pretty - beautify code with Artistic Style"
+	@echo "run_benchmarks - build and run benchmarks"
+
+
+##########################################################################
+# documentation tests
+##########################################################################
+
+# compile example files and check output
+doctest:
+	$(MAKE) check_output -C docs
+
+
+##########################################################################
+# benchmarks
+##########################################################################
+
+run_benchmarks:
+	rm -fr cmake-build-benchmarks
+	mkdir cmake-build-benchmarks
+	cd cmake-build-benchmarks ; cmake ../tests/benchmarks -GNinja -DCMAKE_BUILD_TYPE=Release
+	cd cmake-build-benchmarks ; ninja
+	cd cmake-build-benchmarks ; ./json_benchmarks
+
+
+##########################################################################
+# fuzzing
+##########################################################################
+
+# the overall fuzz testing target
+fuzz_testing:
+	rm -fr fuzz-testing
+	mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
+	$(MAKE) parse_afl_fuzzer -C tests CXX=afl-clang++
+	mv tests/parse_afl_fuzzer fuzz-testing/fuzzer
+	find tests/data/json_tests -size -5k -name *json | xargs -I{} cp "{}" fuzz-testing/testcases
+	@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
+
+fuzz_testing_bson:
+	rm -fr fuzz-testing
+	mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
+	$(MAKE) parse_bson_fuzzer -C tests CXX=afl-clang++
+	mv tests/parse_bson_fuzzer fuzz-testing/fuzzer
+	find tests/data -size -5k -name *.bson | xargs -I{} cp "{}" fuzz-testing/testcases
+	@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
+
+fuzz_testing_cbor:
+	rm -fr fuzz-testing
+	mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
+	$(MAKE) parse_cbor_fuzzer -C tests CXX=afl-clang++
+	mv tests/parse_cbor_fuzzer fuzz-testing/fuzzer
+	find tests/data -size -5k -name *.cbor | xargs -I{} cp "{}" fuzz-testing/testcases
+	@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
+
+fuzz_testing_msgpack:
+	rm -fr fuzz-testing
+	mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
+	$(MAKE) parse_msgpack_fuzzer -C tests CXX=afl-clang++
+	mv tests/parse_msgpack_fuzzer fuzz-testing/fuzzer
+	find tests/data -size -5k -name *.msgpack | xargs -I{} cp "{}" fuzz-testing/testcases
+	@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
+
+fuzz_testing_ubjson:
+	rm -fr fuzz-testing
+	mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
+	$(MAKE) parse_ubjson_fuzzer -C tests CXX=afl-clang++
+	mv tests/parse_ubjson_fuzzer fuzz-testing/fuzzer
+	find tests/data -size -5k -name *.ubjson | xargs -I{} cp "{}" fuzz-testing/testcases
+	@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
+
+fuzzing-start:
+	afl-fuzz -S fuzzer1 -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer > /dev/null &
+	afl-fuzz -S fuzzer2 -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer > /dev/null &
+	afl-fuzz -S fuzzer3 -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer > /dev/null &
+	afl-fuzz -S fuzzer4 -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer > /dev/null &
+	afl-fuzz -S fuzzer5 -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer > /dev/null &
+	afl-fuzz -S fuzzer6 -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer > /dev/null &
+	afl-fuzz -S fuzzer7 -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer > /dev/null &
+	afl-fuzz -M fuzzer0 -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer
+
+fuzzing-stop:
+	-killall fuzzer
+	-killall afl-fuzz
+
+
+##########################################################################
+# Static analysis
+##########################################################################
+
+# call PVS-Studio Analyzer <https://www.viva64.com/en/pvs-studio/>
+pvs_studio:
+	rm -fr cmake-build-pvs-studio
+	mkdir cmake-build-pvs-studio
+	cd cmake-build-pvs-studio ; cmake .. -DCMAKE_EXPORT_COMPILE_COMMANDS=On -DJSON_MultipleHeaders=ON
+	cd cmake-build-pvs-studio ; pvs-studio-analyzer analyze -j 10
+	cd cmake-build-pvs-studio ; plog-converter -a'GA:1,2;64:1;CS' -t fullhtml PVS-Studio.log -o pvs
+	open cmake-build-pvs-studio/pvs/index.html
+
+
+##########################################################################
+# Code format and source amalgamation
+##########################################################################
+
+# call the Artistic Style pretty printer on all source files
+pretty:
+	astyle \
+	    --style=allman \
+	    --indent=spaces=4 \
+	    --indent-modifiers \
+	    --indent-switches \
+	    --indent-preproc-block \
+	    --indent-preproc-define \
+	    --indent-col1-comments \
+	    --pad-oper \
+	    --pad-header \
+	    --align-pointer=type \
+	    --align-reference=type \
+	    --add-braces \
+	    --convert-tabs \
+	    --close-templates \
+	    --lineend=linux \
+	    --preserve-date \
+	    --suffix=none \
+	    --formatted \
+	   $(SRCS) $(TESTS_SRCS) $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) docs/examples/*.cpp
+
+# call the Clang-Format on all source files
+pretty_format:
+	for FILE in $(SRCS) $(TESTS_SRCS) $(AMALGAMATED_FILE) docs/examples/*.cpp; do echo $$FILE; clang-format -i $$FILE; done
+
+# create single header files and pretty print
+amalgamate: $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE)
+	$(MAKE) pretty
+
+# call the amalgamation tool for json.hpp
+$(AMALGAMATED_FILE): $(SRCS)
+	tools/amalgamate/amalgamate.py -c tools/amalgamate/config_json.json -s . --verbose=yes
+
+# call the amalgamation tool for json_fwd.hpp
+$(AMALGAMATED_FWD_FILE): $(SRCS)
+	tools/amalgamate/amalgamate.py -c tools/amalgamate/config_json_fwd.json -s . --verbose=yes
+
+# check if file single_include/nlohmann/json.hpp has been amalgamated from the nlohmann sources
+# Note: this target is called by Travis
+check-amalgamation:
+	@mv $(AMALGAMATED_FILE) $(AMALGAMATED_FILE)~
+	@mv $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_FWD_FILE)~
+	@$(MAKE) amalgamate
+	@diff $(AMALGAMATED_FILE) $(AMALGAMATED_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_FILE)~ $(AMALGAMATED_FILE) ; false)
+	@diff $(AMALGAMATED_FWD_FILE) $(AMALGAMATED_FWD_FILE)~ || (echo "===================================================================\n  Amalgamation required! Please read the contribution guidelines\n  in file .github/CONTRIBUTING.md.\n===================================================================" ; mv $(AMALGAMATED_FWD_FILE)~ $(AMALGAMATED_FWD_FILE) ; false)
+	@mv $(AMALGAMATED_FILE)~ $(AMALGAMATED_FILE)
+	@mv $(AMALGAMATED_FWD_FILE)~ $(AMALGAMATED_FWD_FILE)
+
+BUILD.bazel: $(SRCS)
+	cmake -P cmake/scripts/gen_bazel_build_file.cmake
+
+##########################################################################
+# ChangeLog
+##########################################################################
+
+# Create a ChangeLog based on the git log using the GitHub Changelog Generator
+# (<https://github.com/github-changelog-generator/github-changelog-generator>).
+
+# variable to control the diffs between the last released version and the current repository state
+NEXT_VERSION ?= "unreleased"
+
+ChangeLog.md:
+	github_changelog_generator -o ChangeLog.md --user nlohmann --project json --simple-list --release-url https://github.com/nlohmann/json/releases/tag/%s --future-release $(NEXT_VERSION)
+	$(SED) -i 's|https://github.com/nlohmann/json/releases/tag/HEAD|https://github.com/nlohmann/json/tree/HEAD|' ChangeLog.md
+	$(SED) -i '2i All notable changes to this project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org/).' ChangeLog.md
+
+
+##########################################################################
+# Release files
+##########################################################################
+
+# Create a tar.gz archive that contains sufficient files to be used as CMake project (e.g., using FetchContent). The
+# archive is created according to the advices of <https://reproducible-builds.org/docs/archives/>.
+json.tar.xz:
+	mkdir json
+	rsync -R $(shell find LICENSE.MIT nlohmann_json.natvis CMakeLists.txt cmake/*.in include single_include -type f) json
+	gtar --sort=name --mtime="@$(shell git log -1 --pretty=%ct)" --owner=0 --group=0 --numeric-owner --pax-option=exthdr.name=%d/PaxHeaders/%f,delete=atime,delete=ctime --create --file - json | xz --compress -9e --threads=2 - > json.tar.xz
+	rm -fr json
+
+# We use `-X` to make the resulting ZIP file reproducible, see
+# <https://content.pivotal.io/blog/barriers-to-deterministic-reproducible-zip-files>.
+include.zip: BUILD.bazel
+	zip -9 --recurse-paths -X include.zip $(SRCS) $(AMALGAMATED_FILE) $(AMALGAMATED_FWD_FILE) BUILD.bazel WORKSPACE.bazel meson.build LICENSE.MIT
+
+# Create the files for a release and add signatures and hashes.
+release: include.zip json.tar.xz
+	rm -fr release_files
+	mkdir release_files
+	gpg --armor --detach-sig include.zip
+	gpg --armor --detach-sig $(AMALGAMATED_FILE)
+	gpg --armor --detach-sig $(AMALGAMATED_FWD_FILE)
+	gpg --armor --detach-sig json.tar.xz
+	cp $(AMALGAMATED_FILE) release_files
+	cp $(AMALGAMATED_FWD_FILE) release_files
+	mv $(AMALGAMATED_FILE).asc $(AMALGAMATED_FWD_FILE).asc json.tar.xz json.tar.xz.asc include.zip include.zip.asc release_files
+	cd release_files ; shasum -a 256 json.hpp include.zip json.tar.xz > hashes.txt
+
+
+##########################################################################
+# Maintenance
+##########################################################################
+
+# clean up
+clean:
+	rm -fr fuzz fuzz-testing *.dSYM tests/*.dSYM
+	rm -fr benchmarks/files/numbers/*.json
+	rm -fr cmake-build-benchmarks fuzz-testing cmake-build-pvs-studio release_files
+	$(MAKE) clean -Cdocs
+
+
+##########################################################################
+# Thirdparty code
+##########################################################################
+
+update_hedley:
+	rm -f include/nlohmann/thirdparty/hedley/hedley.hpp include/nlohmann/thirdparty/hedley/hedley_undef.hpp
+	curl https://raw.githubusercontent.com/nemequ/hedley/master/hedley.h -o include/nlohmann/thirdparty/hedley/hedley.hpp
+	$(SED) -i 's/HEDLEY_/JSON_HEDLEY_/g' include/nlohmann/thirdparty/hedley/hedley.hpp
+	grep "[[:blank:]]*#[[:blank:]]*undef" include/nlohmann/thirdparty/hedley/hedley.hpp | grep -v "__" | sort | uniq | $(SED) 's/ //g' | $(SED) 's/undef/undef /g' > include/nlohmann/thirdparty/hedley/hedley_undef.hpp
+	$(SED) -i '1s/^/#pragma once\n\n/' include/nlohmann/thirdparty/hedley/hedley.hpp
+	$(SED) -i '1s/^/#pragma once\n\n/' include/nlohmann/thirdparty/hedley/hedley_undef.hpp
+	$(MAKE) amalgamate
+
+##########################################################################
+# serve_header.py
+##########################################################################
+
+serve_header:
+	./tools/serve_header/serve_header.py --make $(MAKE)
+
+##########################################################################
+# REUSE
+##########################################################################
+
+reuse:
+	pipx run reuse annotate --recursive single_include include -tjson --license MIT --copyright "Niels Lohmann <https://nlohmann.me>" --year "2013-2024" --merge-copyrights
+	pipx run reuse annotate $(TESTS_SRCS) -tjson_support --license MIT --copyright "Niels Lohmann <https://nlohmann.me>" --year "2013-2024" --merge-copyrights
+	pipx run reuse lint
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/Package.swift b/ohos/vap/vap_module/src/main/cpp/include/util/json/Package.swift
new file mode 100644
index 00000000..2f9c4a1f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/Package.swift
@@ -0,0 +1,22 @@
+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "nlohmann-json",
+     platforms: [
+        .iOS(.v12), .macOS(.v10_13), .tvOS(.v12), .watchOS(.v4)
+    ],
+    products: [
+        .library(name: "json", targets: ["json"])
+    ],
+    targets: [
+        .target(
+            name: "json",
+            path: "single_include/nlohmann",
+            publicHeadersPath: "."
+        )
+    ],
+    cxxLanguageStandard: .cxx11
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/README.md
new file mode 100644
index 00000000..12ce676a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/README.md
@@ -0,0 +1,1916 @@
+[![JSON for Modern C++](docs/json.gif)](https://github.com/nlohmann/json/releases)
+
+[![Build Status](https://ci.appveyor.com/api/projects/status/1acb366xfyg3qybk/branch/develop?svg=true)](https://ci.appveyor.com/project/nlohmann/json)
+[![Ubuntu](https://github.com/nlohmann/json/workflows/Ubuntu/badge.svg)](https://github.com/nlohmann/json/actions?query=workflow%3AUbuntu)
+[![macOS](https://github.com/nlohmann/json/workflows/macOS/badge.svg)](https://github.com/nlohmann/json/actions?query=workflow%3AmacOS)
+[![Windows](https://github.com/nlohmann/json/workflows/Windows/badge.svg)](https://github.com/nlohmann/json/actions?query=workflow%3AWindows)
+[![Coverage Status](https://coveralls.io/repos/github/nlohmann/json/badge.svg?branch=develop)](https://coveralls.io/github/nlohmann/json?branch=develop)
+[![Coverity Scan Build Status](https://scan.coverity.com/projects/5550/badge.svg)](https://scan.coverity.com/projects/nlohmann-json)
+[![Codacy Badge](https://app.codacy.com/project/badge/Grade/e0d1a9d5d6fd46fcb655c4cb930bb3e8)](https://www.codacy.com/gh/nlohmann/json/dashboard?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=nlohmann/json&amp;utm_campaign=Badge_Grade)
+[![Cirrus CI](https://api.cirrus-ci.com/github/nlohmann/json.svg)](https://cirrus-ci.com/github/nlohmann/json)
+[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/json.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:json)
+[![Try online](https://img.shields.io/badge/try-online-blue.svg)](https://wandbox.org/permlink/1mp10JbaANo6FUc7)
+[![Documentation](https://img.shields.io/badge/docs-mkdocs-blue.svg)](https://json.nlohmann.me)
+[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/nlohmann/json/master/LICENSE.MIT)
+[![GitHub Releases](https://img.shields.io/github/release/nlohmann/json.svg)](https://github.com/nlohmann/json/releases)
+[![Vcpkg Version](https://img.shields.io/vcpkg/v/nlohmann-json)](https://vcpkg.link/ports/nlohmann-json)
+[![Packaging status](https://repology.org/badge/tiny-repos/nlohmann-json.svg)](https://repology.org/project/nlohmann-json/versions)
+[![GitHub Downloads](https://img.shields.io/github/downloads/nlohmann/json/total)](https://github.com/nlohmann/json/releases)
+[![GitHub Issues](https://img.shields.io/github/issues/nlohmann/json.svg)](https://github.com/nlohmann/json/issues)
+[![Average time to resolve an issue](https://isitmaintained.com/badge/resolution/nlohmann/json.svg)](https://isitmaintained.com/project/nlohmann/json "Average time to resolve an issue")
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/289/badge)](https://bestpractices.coreinfrastructure.org/projects/289)
+[![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/nlohmann/json/badge)](https://scorecard.dev/viewer/?uri=github.com/nlohmann/json)
+[![GitHub Sponsors](https://img.shields.io/badge/GitHub-Sponsors-ff69b4)](https://github.com/sponsors/nlohmann)
+[![REUSE status](https://api.reuse.software/badge/github.com/nlohmann/json)](https://api.reuse.software/info/github.com/nlohmann/json)
+[![Discord](https://img.shields.io/discord/1003743314341793913)](https://discord.gg/6mrGXKvX7y)
+
+- [Design goals](#design-goals)
+- [Sponsors](#sponsors)
+- [Support](#support) ([documentation](https://json.nlohmann.me), [FAQ](https://json.nlohmann.me/home/faq/), [discussions](https://github.com/nlohmann/json/discussions), [API](https://json.nlohmann.me/api/basic_json/), [bug issues](https://github.com/nlohmann/json/issues))
+- [Examples](#examples)
+  - [Read JSON from a file](#read-json-from-a-file)
+  - [Creating `json` objects from JSON literals](#creating-json-objects-from-json-literals)
+  - [JSON as first-class data type](#json-as-first-class-data-type)
+  - [Serialization / Deserialization](#serialization--deserialization)
+  - [STL-like access](#stl-like-access)
+  - [Conversion from STL containers](#conversion-from-stl-containers)
+  - [JSON Pointer and JSON Patch](#json-pointer-and-json-patch)
+  - [JSON Merge Patch](#json-merge-patch)
+  - [Implicit conversions](#implicit-conversions)
+  - [Conversions to/from arbitrary types](#arbitrary-types-conversions)
+  - [Specializing enum conversion](#specializing-enum-conversion)
+  - [Binary formats (BSON, CBOR, MessagePack, UBJSON, and BJData)](#binary-formats-bson-cbor-messagepack-ubjson-and-bjdata)
+- [Customers](#customers)
+- [Supported compilers](#supported-compilers)
+- [Integration](#integration)
+  - [CMake](#cmake)
+  - [Package Managers](#package-managers)
+  - [Pkg-config](#pkg-config)
+- [License](#license)
+- [Contact](#contact)
+- [Thanks](#thanks)
+- [Used third-party tools](#used-third-party-tools)
+- [Projects using JSON for Modern C++](#projects-using-json-for-modern-c)
+- [Notes](#notes)
+- [Execute unit tests](#execute-unit-tests)
+
+
+## Design goals
+
+There are myriads of [JSON](https://json.org) libraries out there, and each may even have its reason to exist. Our class had these design goals:
+
+- **Intuitive syntax**. In languages such as Python, JSON feels like a first class data type. We used all the operator magic of modern C++ to achieve the same feeling in your code. Check out the [examples below](#examples) and you'll know what I mean.
+
+- **Trivial integration**. Our whole code consists of a single header file [`json.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json.hpp). That's it. No library, no subproject, no dependencies, no complex build system. The class is written in vanilla C++11. All in all, everything should require no adjustment of your compiler flags or project settings.
+
+- **Serious testing**. Our code is heavily [unit-tested](https://github.com/nlohmann/json/tree/develop/tests/src) and covers [100%](https://coveralls.io/r/nlohmann/json) of the code, including all exceptional behavior. Furthermore, we checked with [Valgrind](https://valgrind.org) and the [Clang Sanitizers](https://clang.llvm.org/docs/index.html) that there are no memory leaks. [Google OSS-Fuzz](https://github.com/google/oss-fuzz/tree/master/projects/json) additionally runs fuzz tests against all parsers 24/7, effectively executing billions of tests so far. To maintain high quality, the project is following the [Core Infrastructure Initiative (CII) best practices](https://bestpractices.coreinfrastructure.org/projects/289).
+
+Other aspects were not so important to us:
+
+- **Memory efficiency**. Each JSON object has an overhead of one pointer (the maximal size of a union) and one enumeration element (1 byte). The default generalization uses the following C++ data types: `std::string` for strings, `int64_t`, `uint64_t` or `double` for numbers, `std::map` for objects, `std::vector` for arrays, and `bool` for Booleans. However, you can template the generalized class `basic_json` to your needs.
+
+- **Speed**. There are certainly [faster JSON libraries](https://github.com/miloyip/nativejson-benchmark#parsing-time) out there. However, if your goal is to speed up your development by adding JSON support with a single header, then this library is the way to go. If you know how to use a `std::vector` or `std::map`, you are already set.
+
+See the [contribution guidelines](https://github.com/nlohmann/json/blob/master/.github/CONTRIBUTING.md#please-dont) for more information.
+
+
+## Sponsors
+
+You can sponsor this library at [GitHub Sponsors](https://github.com/sponsors/nlohmann).
+
+### :raising_hand: Priority Sponsor
+
+- [Martti Laine](https://github.com/codeclown)
+- [Paul Harrington](https://github.com/phrrngtn)
+
+### :label: Named Sponsors
+
+- [Michael Hartmann](https://github.com/reFX-Mike)
+- [Stefan Hagen](https://github.com/sthagen)
+- [Steve Sperandeo](https://github.com/homer6)
+- [Robert Jefe Lindstädt](https://github.com/eljefedelrodeodeljefe)
+- [Steve Wagner](https://github.com/ciroque)
+- [Lion Yang](https://github.com/LionNatsu)
+
+Thanks everyone!
+
+
+## Support
+
+:question: If you have a **question**, please check if it is already answered in the [**FAQ**](https://json.nlohmann.me/home/faq/) or the [**Q&A**](https://github.com/nlohmann/json/discussions/categories/q-a) section. If not, please [**ask a new question**](https://github.com/nlohmann/json/discussions/new) there.
+
+:books: If you want to **learn more** about how to use the library, check out the rest of the [**README**](#examples), have a look at [**code examples**](https://github.com/nlohmann/json/tree/develop/docs/examples), or browse through the [**help pages**](https://json.nlohmann.me).
+
+:construction: If you want to understand the **API** better, check out the [**API Reference**](https://json.nlohmann.me/api/basic_json/).
+
+:bug: If you found a **bug**, please check the [**FAQ**](https://json.nlohmann.me/home/faq/) if it is a known issue or the result of a design decision. Please also have a look at the [**issue list**](https://github.com/nlohmann/json/issues) before you [**create a new issue**](https://github.com/nlohmann/json/issues/new/choose). Please provide as much information as possible to help us understand and reproduce your issue.
+
+There is also a [**docset**](https://github.com/Kapeli/Dash-User-Contributions/tree/master/docsets/JSON_for_Modern_C%2B%2B) for the documentation browsers [Dash](https://kapeli.com/dash), [Velocity](https://velocity.silverlakesoftware.com), and [Zeal](https://zealdocs.org) that contains the full [documentation](https://json.nlohmann.me) as offline resource.
+
+
+## Examples
+
+Here are some examples to give you an idea how to use the class.
+
+Beside the examples below, you may want to:
+
+→ Check the [documentation](https://json.nlohmann.me/)\
+→ Browse the [standalone example files](https://github.com/nlohmann/json/tree/develop/docs/examples)
+
+Every API function (documented in the [API Documentation](https://json.nlohmann.me/api/basic_json/)) has a corresponding standalone example file. For example, the [`emplace()`](https://json.nlohmann.me/api/basic_json/emplace/) function has a matching [emplace.cpp](https://github.com/nlohmann/json/blob/develop/docs/examples/emplace.cpp) example file.
+
+### Read JSON from a file
+
+The `json` class provides an API for manipulating a JSON value. To create a `json` object by reading a JSON file:
+
+```cpp
+#include <fstream>
+#include <nlohmann/json.hpp>
+using json = nlohmann::json;
+
+// ...
+
+std::ifstream f("example.json");
+json data = json::parse(f);
+```
+
+### Creating `json` objects from JSON literals
+
+Assume you want to create hard-code this literal JSON value in a file, as a `json` object:
+
+```json
+{
+  "pi": 3.141,
+  "happy": true
+}
+```
+
+There are various options:
+
+```cpp
+// Using (raw) string literals and json::parse
+json ex1 = json::parse(R"(
+  {
+    "pi": 3.141,
+    "happy": true
+  }
+)");
+
+// Using user-defined (raw) string literals
+using namespace nlohmann::literals;
+json ex2 = R"(
+  {
+    "pi": 3.141,
+    "happy": true
+  }
+)"_json;
+
+// Using initializer lists
+json ex3 = {
+  {"happy", true},
+  {"pi", 3.141},
+};
+```
+
+### JSON as first-class data type
+
+Here are some examples to give you an idea how to use the class.
+
+Assume you want to create the JSON object
+
+```json
+{
+  "pi": 3.141,
+  "happy": true,
+  "name": "Niels",
+  "nothing": null,
+  "answer": {
+    "everything": 42
+  },
+  "list": [1, 0, 2],
+  "object": {
+    "currency": "USD",
+    "value": 42.99
+  }
+}
+```
+
+With this library, you could write:
+
+```cpp
+// create an empty structure (null)
+json j;
+
+// add a number that is stored as double (note the implicit conversion of j to an object)
+j["pi"] = 3.141;
+
+// add a Boolean that is stored as bool
+j["happy"] = true;
+
+// add a string that is stored as std::string
+j["name"] = "Niels";
+
+// add another null object by passing nullptr
+j["nothing"] = nullptr;
+
+// add an object inside the object
+j["answer"]["everything"] = 42;
+
+// add an array that is stored as std::vector (using an initializer list)
+j["list"] = { 1, 0, 2 };
+
+// add another object (using an initializer list of pairs)
+j["object"] = { {"currency", "USD"}, {"value", 42.99} };
+
+// instead, you could also write (which looks very similar to the JSON above)
+json j2 = {
+  {"pi", 3.141},
+  {"happy", true},
+  {"name", "Niels"},
+  {"nothing", nullptr},
+  {"answer", {
+    {"everything", 42}
+  }},
+  {"list", {1, 0, 2}},
+  {"object", {
+    {"currency", "USD"},
+    {"value", 42.99}
+  }}
+};
+```
+
+Note that in all these cases, you never need to "tell" the compiler which JSON value type you want to use. If you want to be explicit or express some edge cases, the functions [`json::array()`](https://json.nlohmann.me/api/basic_json/array/) and [`json::object()`](https://json.nlohmann.me/api/basic_json/object/) will help:
+
+```cpp
+// a way to express the empty array []
+json empty_array_explicit = json::array();
+
+// ways to express the empty object {}
+json empty_object_implicit = json({});
+json empty_object_explicit = json::object();
+
+// a way to express an _array_ of key/value pairs [["currency", "USD"], ["value", 42.99]]
+json array_not_object = json::array({ {"currency", "USD"}, {"value", 42.99} });
+```
+
+### Serialization / Deserialization
+
+#### To/from strings
+
+You can create a JSON value (deserialization) by appending `_json` to a string literal:
+
+```cpp
+// create object from string literal
+json j = "{ \"happy\": true, \"pi\": 3.141 }"_json;
+
+// or even nicer with a raw string literal
+auto j2 = R"(
+  {
+    "happy": true,
+    "pi": 3.141
+  }
+)"_json;
+```
+
+Note that without appending the `_json` suffix, the passed string literal is not parsed, but just used as JSON string
+value. That is, `json j = "{ \"happy\": true, \"pi\": 3.141 }"` would just store the string
+`"{ "happy": true, "pi": 3.141 }"` rather than parsing the actual object.
+
+The string literal should be brought into scope with `using namespace nlohmann::literals;`
+(see [`json::parse()`](https://json.nlohmann.me/api/operator_literal_json/)).
+
+The above example can also be expressed explicitly using [`json::parse()`](https://json.nlohmann.me/api/basic_json/parse/):
+
+```cpp
+// parse explicitly
+auto j3 = json::parse(R"({"happy": true, "pi": 3.141})");
+```
+
+You can also get a string representation of a JSON value (serialize):
+
+```cpp
+// explicit conversion to string
+std::string s = j.dump();    // {"happy":true,"pi":3.141}
+
+// serialization with pretty printing
+// pass in the amount of spaces to indent
+std::cout << j.dump(4) << std::endl;
+// {
+//     "happy": true,
+//     "pi": 3.141
+// }
+```
+
+Note the difference between serialization and assignment:
+
+```cpp
+// store a string in a JSON value
+json j_string = "this is a string";
+
+// retrieve the string value
+auto cpp_string = j_string.template get<std::string>();
+// retrieve the string value (alternative when a variable already exists)
+std::string cpp_string2;
+j_string.get_to(cpp_string2);
+
+// retrieve the serialized value (explicit JSON serialization)
+std::string serialized_string = j_string.dump();
+
+// output of original string
+std::cout << cpp_string << " == " << cpp_string2 << " == " << j_string.template get<std::string>() << '\n';
+// output of serialized value
+std::cout << j_string << " == " << serialized_string << std::endl;
+```
+
+[`.dump()`](https://json.nlohmann.me/api/basic_json/dump/) returns the originally stored string value.
+
+Note the library only supports UTF-8. When you store strings with different encodings in the library, calling [`dump()`](https://json.nlohmann.me/api/basic_json/dump/) may throw an exception unless `json::error_handler_t::replace` or `json::error_handler_t::ignore` are used as error handlers.
+
+#### To/from streams (e.g. files, string streams)
+
+You can also use streams to serialize and deserialize:
+
+```cpp
+// deserialize from standard input
+json j;
+std::cin >> j;
+
+// serialize to standard output
+std::cout << j;
+
+// the setw manipulator was overloaded to set the indentation for pretty printing
+std::cout << std::setw(4) << j << std::endl;
+```
+
+These operators work for any subclasses of `std::istream` or `std::ostream`. Here is the same example with files:
+
+```cpp
+// read a JSON file
+std::ifstream i("file.json");
+json j;
+i >> j;
+
+// write prettified JSON to another file
+std::ofstream o("pretty.json");
+o << std::setw(4) << j << std::endl;
+```
+
+Please note that setting the exception bit for `failbit` is inappropriate for this use case. It will result in program termination due to the `noexcept` specifier in use.
+
+#### Read from iterator range
+
+You can also parse JSON from an iterator range; that is, from any container accessible by iterators whose `value_type` is an integral type of 1, 2 or 4 bytes, which will be interpreted as UTF-8, UTF-16 and UTF-32 respectively. For instance, a `std::vector<std::uint8_t>`, or a `std::list<std::uint16_t>`:
+
+```cpp
+std::vector<std::uint8_t> v = {'t', 'r', 'u', 'e'};
+json j = json::parse(v.begin(), v.end());
+```
+
+You may leave the iterators for the range [begin, end):
+
+```cpp
+std::vector<std::uint8_t> v = {'t', 'r', 'u', 'e'};
+json j = json::parse(v);
+```
+
+#### Custom data source
+
+Since the parse function accepts arbitrary iterator ranges, you can provide your own data sources by implementing the `LegacyInputIterator` concept.
+
+```cpp
+struct MyContainer {
+  void advance();
+  const char& get_current();
+};
+
+struct MyIterator {
+    using difference_type = std::ptrdiff_t;
+    using value_type = char;
+    using pointer = const char*;
+    using reference = const char&;
+    using iterator_category = std::input_iterator_tag;
+
+    MyIterator& operator++() {
+        target->advance();
+        return *this;
+    }
+
+    bool operator!=(const MyIterator& rhs) const {
+        return rhs.target != target;
+    }
+
+    reference operator*() const {
+        return target->get_current();
+    }
+
+    MyContainer* target = nullptr;
+};
+
+MyIterator begin(MyContainer& tgt) {
+    return MyIterator{&tgt};
+}
+
+MyIterator end(const MyContainer&) {
+    return {};
+}
+
+void foo() {
+    MyContainer c;
+    json j = json::parse(c);
+}
+```
+
+#### SAX interface
+
+The library uses a SAX-like interface with the following functions:
+
+```cpp
+// called when null is parsed
+bool null();
+
+// called when a boolean is parsed; value is passed
+bool boolean(bool val);
+
+// called when a signed or unsigned integer number is parsed; value is passed
+bool number_integer(number_integer_t val);
+bool number_unsigned(number_unsigned_t val);
+
+// called when a floating-point number is parsed; value and original string is passed
+bool number_float(number_float_t val, const string_t& s);
+
+// called when a string is parsed; value is passed and can be safely moved away
+bool string(string_t& val);
+// called when a binary value is parsed; value is passed and can be safely moved away
+bool binary(binary_t& val);
+
+// called when an object or array begins or ends, resp. The number of elements is passed (or -1 if not known)
+bool start_object(std::size_t elements);
+bool end_object();
+bool start_array(std::size_t elements);
+bool end_array();
+// called when an object key is parsed; value is passed and can be safely moved away
+bool key(string_t& val);
+
+// called when a parse error occurs; byte position, the last token, and an exception is passed
+bool parse_error(std::size_t position, const std::string& last_token, const detail::exception& ex);
+```
+
+The return value of each function determines whether parsing should proceed.
+
+To implement your own SAX handler, proceed as follows:
+
+1. Implement the SAX interface in a class. You can use class `nlohmann::json_sax<json>` as base class, but you can also use any class where the functions described above are implemented and public.
+2. Create an object of your SAX interface class, e.g. `my_sax`.
+3. Call `bool json::sax_parse(input, &my_sax)`; where the first parameter can be any input like a string or an input stream and the second parameter is a pointer to your SAX interface.
+
+Note the `sax_parse` function only returns a `bool` indicating the result of the last executed SAX event. It does not return a  `json` value - it is up to you to decide what to do with the SAX events. Furthermore, no exceptions are thrown in case of a parse error - it is up to you what to do with the exception object passed to your `parse_error` implementation. Internally, the SAX interface is used for the DOM parser (class `json_sax_dom_parser`) as well as the acceptor (`json_sax_acceptor`), see file [`json_sax.hpp`](https://github.com/nlohmann/json/blob/develop/include/nlohmann/detail/input/json_sax.hpp).
+
+### STL-like access
+
+We designed the JSON class to behave just like an STL container. In fact, it satisfies the [**ReversibleContainer**](https://en.cppreference.com/w/cpp/named_req/ReversibleContainer) requirement.
+
+```cpp
+// create an array using push_back
+json j;
+j.push_back("foo");
+j.push_back(1);
+j.push_back(true);
+
+// also use emplace_back
+j.emplace_back(1.78);
+
+// iterate the array
+for (json::iterator it = j.begin(); it != j.end(); ++it) {
+  std::cout << *it << '\n';
+}
+
+// range-based for
+for (auto& element : j) {
+  std::cout << element << '\n';
+}
+
+// getter/setter
+const auto tmp = j[0].template get<std::string>();
+j[1] = 42;
+bool foo = j.at(2);
+
+// comparison
+j == R"(["foo", 1, true, 1.78])"_json;  // true
+
+// other stuff
+j.size();     // 4 entries
+j.empty();    // false
+j.type();     // json::value_t::array
+j.clear();    // the array is empty again
+
+// convenience type checkers
+j.is_null();
+j.is_boolean();
+j.is_number();
+j.is_object();
+j.is_array();
+j.is_string();
+
+// create an object
+json o;
+o["foo"] = 23;
+o["bar"] = false;
+o["baz"] = 3.141;
+
+// also use emplace
+o.emplace("weather", "sunny");
+
+// special iterator member functions for objects
+for (json::iterator it = o.begin(); it != o.end(); ++it) {
+  std::cout << it.key() << " : " << it.value() << "\n";
+}
+
+// the same code as range for
+for (auto& el : o.items()) {
+  std::cout << el.key() << " : " << el.value() << "\n";
+}
+
+// even easier with structured bindings (C++17)
+for (auto& [key, value] : o.items()) {
+  std::cout << key << " : " << value << "\n";
+}
+
+// find an entry
+if (o.contains("foo")) {
+  // there is an entry with key "foo"
+}
+
+// or via find and an iterator
+if (o.find("foo") != o.end()) {
+  // there is an entry with key "foo"
+}
+
+// or simpler using count()
+int foo_present = o.count("foo"); // 1
+int fob_present = o.count("fob"); // 0
+
+// delete an entry
+o.erase("foo");
+```
+
+
+### Conversion from STL containers
+
+Any sequence container (`std::array`, `std::vector`, `std::deque`, `std::forward_list`, `std::list`) whose values can be used to construct JSON values (e.g., integers, floating point numbers, Booleans, string types, or again STL containers described in this section) can be used to create a JSON array. The same holds for similar associative containers (`std::set`, `std::multiset`, `std::unordered_set`, `std::unordered_multiset`), but in these cases the order of the elements of the array depends on how the elements are ordered in the respective STL container.
+
+```cpp
+std::vector<int> c_vector {1, 2, 3, 4};
+json j_vec(c_vector);
+// [1, 2, 3, 4]
+
+std::deque<double> c_deque {1.2, 2.3, 3.4, 5.6};
+json j_deque(c_deque);
+// [1.2, 2.3, 3.4, 5.6]
+
+std::list<bool> c_list {true, true, false, true};
+json j_list(c_list);
+// [true, true, false, true]
+
+std::forward_list<int64_t> c_flist {12345678909876, 23456789098765, 34567890987654, 45678909876543};
+json j_flist(c_flist);
+// [12345678909876, 23456789098765, 34567890987654, 45678909876543]
+
+std::array<unsigned long, 4> c_array {{1, 2, 3, 4}};
+json j_array(c_array);
+// [1, 2, 3, 4]
+
+std::set<std::string> c_set {"one", "two", "three", "four", "one"};
+json j_set(c_set); // only one entry for "one" is used
+// ["four", "one", "three", "two"]
+
+std::unordered_set<std::string> c_uset {"one", "two", "three", "four", "one"};
+json j_uset(c_uset); // only one entry for "one" is used
+// maybe ["two", "three", "four", "one"]
+
+std::multiset<std::string> c_mset {"one", "two", "one", "four"};
+json j_mset(c_mset); // both entries for "one" are used
+// maybe ["one", "two", "one", "four"]
+
+std::unordered_multiset<std::string> c_umset {"one", "two", "one", "four"};
+json j_umset(c_umset); // both entries for "one" are used
+// maybe ["one", "two", "one", "four"]
+```
+
+Likewise, any associative key-value containers (`std::map`, `std::multimap`, `std::unordered_map`, `std::unordered_multimap`) whose keys can construct an `std::string` and whose values can be used to construct JSON values (see examples above) can be used to create a JSON object. Note that in case of multimaps only one key is used in the JSON object and the value depends on the internal order of the STL container.
+
+```cpp
+std::map<std::string, int> c_map { {"one", 1}, {"two", 2}, {"three", 3} };
+json j_map(c_map);
+// {"one": 1, "three": 3, "two": 2 }
+
+std::unordered_map<const char*, double> c_umap { {"one", 1.2}, {"two", 2.3}, {"three", 3.4} };
+json j_umap(c_umap);
+// {"one": 1.2, "two": 2.3, "three": 3.4}
+
+std::multimap<std::string, bool> c_mmap { {"one", true}, {"two", true}, {"three", false}, {"three", true} };
+json j_mmap(c_mmap); // only one entry for key "three" is used
+// maybe {"one": true, "two": true, "three": true}
+
+std::unordered_multimap<std::string, bool> c_ummap { {"one", true}, {"two", true}, {"three", false}, {"three", true} };
+json j_ummap(c_ummap); // only one entry for key "three" is used
+// maybe {"one": true, "two": true, "three": true}
+```
+
+### JSON Pointer and JSON Patch
+
+The library supports **JSON Pointer** ([RFC 6901](https://tools.ietf.org/html/rfc6901)) as alternative means to address structured values. On top of this, **JSON Patch** ([RFC 6902](https://tools.ietf.org/html/rfc6902)) allows describing differences between two JSON values - effectively allowing patch and diff operations known from Unix.
+
+```cpp
+// a JSON value
+json j_original = R"({
+  "baz": ["one", "two", "three"],
+  "foo": "bar"
+})"_json;
+
+// access members with a JSON pointer (RFC 6901)
+j_original["/baz/1"_json_pointer];
+// "two"
+
+// a JSON patch (RFC 6902)
+json j_patch = R"([
+  { "op": "replace", "path": "/baz", "value": "boo" },
+  { "op": "add", "path": "/hello", "value": ["world"] },
+  { "op": "remove", "path": "/foo"}
+])"_json;
+
+// apply the patch
+json j_result = j_original.patch(j_patch);
+// {
+//    "baz": "boo",
+//    "hello": ["world"]
+// }
+
+// calculate a JSON patch from two JSON values
+json::diff(j_result, j_original);
+// [
+//   { "op":" replace", "path": "/baz", "value": ["one", "two", "three"] },
+//   { "op": "remove","path": "/hello" },
+//   { "op": "add", "path": "/foo", "value": "bar" }
+// ]
+```
+
+### JSON Merge Patch
+
+The library supports **JSON Merge Patch** ([RFC 7386](https://tools.ietf.org/html/rfc7386)) as a patch format. Instead of using JSON Pointer (see above) to specify values to be manipulated, it describes the changes using a syntax that closely mimics the document being modified.
+
+```cpp
+// a JSON value
+json j_document = R"({
+  "a": "b",
+  "c": {
+    "d": "e",
+    "f": "g"
+  }
+})"_json;
+
+// a patch
+json j_patch = R"({
+  "a":"z",
+  "c": {
+    "f": null
+  }
+})"_json;
+
+// apply the patch
+j_document.merge_patch(j_patch);
+// {
+//  "a": "z",
+//  "c": {
+//    "d": "e"
+//  }
+// }
+```
+
+### Implicit conversions
+
+Supported types can be implicitly converted to JSON values.
+
+It is recommended to **NOT USE** implicit conversions **FROM** a JSON value.
+You can find more details about this recommendation [here](https://www.github.com/nlohmann/json/issues/958).
+You can switch off implicit conversions by defining `JSON_USE_IMPLICIT_CONVERSIONS` to `0` before including the `json.hpp` header. When using CMake, you can also achieve this by setting the option `JSON_ImplicitConversions` to `OFF`.
+
+```cpp
+// strings
+std::string s1 = "Hello, world!";
+json js = s1;
+auto s2 = js.template get<std::string>();
+// NOT RECOMMENDED
+std::string s3 = js;
+std::string s4;
+s4 = js;
+
+// Booleans
+bool b1 = true;
+json jb = b1;
+auto b2 = jb.template get<bool>();
+// NOT RECOMMENDED
+bool b3 = jb;
+bool b4;
+b4 = jb;
+
+// numbers
+int i = 42;
+json jn = i;
+auto f = jn.template get<double>();
+// NOT RECOMMENDED
+double f2 = jb;
+double f3;
+f3 = jb;
+
+// etc.
+```
+
+Note that `char` types are not automatically converted to JSON strings, but to integer numbers. A conversion to a string must be specified explicitly:
+
+```cpp
+char ch = 'A';                       // ASCII value 65
+json j_default = ch;                 // stores integer number 65
+json j_string = std::string(1, ch);  // stores string "A"
+```
+
+### Arbitrary types conversions
+
+Every type can be serialized in JSON, not just STL containers and scalar types. Usually, you would do something along those lines:
+
+```cpp
+namespace ns {
+    // a simple struct to model a person
+    struct person {
+        std::string name;
+        std::string address;
+        int age;
+    };
+}
+
+ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+// convert to JSON: copy each value into the JSON object
+json j;
+j["name"] = p.name;
+j["address"] = p.address;
+j["age"] = p.age;
+
+// ...
+
+// convert from JSON: copy each value from the JSON object
+ns::person p {
+    j["name"].template get<std::string>(),
+    j["address"].template get<std::string>(),
+    j["age"].template get<int>()
+};
+```
+
+It works, but that's quite a lot of boilerplate... Fortunately, there's a better way:
+
+```cpp
+// create a person
+ns::person p {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+// conversion: person -> json
+json j = p;
+
+std::cout << j << std::endl;
+// {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+
+// conversion: json -> person
+auto p2 = j.template get<ns::person>();
+
+// that's it
+assert(p == p2);
+```
+
+#### Basic usage
+
+To make this work with one of your types, you only need to provide two functions:
+
+```cpp
+using json = nlohmann::json;
+
+namespace ns {
+    void to_json(json& j, const person& p) {
+        j = json{{"name", p.name}, {"address", p.address}, {"age", p.age}};
+    }
+
+    void from_json(const json& j, person& p) {
+        j.at("name").get_to(p.name);
+        j.at("address").get_to(p.address);
+        j.at("age").get_to(p.age);
+    }
+} // namespace ns
+```
+
+That's all! When calling the `json` constructor with your type, your custom `to_json` method will be automatically called.
+Likewise, when calling `template get<your_type>()` or `get_to(your_type&)`, the `from_json` method will be called.
+
+Some important things:
+
+* Those methods **MUST** be in your type's namespace (which can be the global namespace), or the library will not be able to locate them (in this example, they are in namespace `ns`, where `person` is defined).
+* Those methods **MUST** be available (e.g., proper headers must be included) everywhere you use these conversions. Look at [issue 1108](https://github.com/nlohmann/json/issues/1108) for errors that may occur otherwise.
+* When using `template get<your_type>()`, `your_type` **MUST** be [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible). (There is a way to bypass this requirement described later.)
+* In function `from_json`, use function [`at()`](https://json.nlohmann.me/api/basic_json/at/) to access the object values rather than `operator[]`. In case a key does not exist, `at` throws an exception that you can handle, whereas `operator[]` exhibits undefined behavior.
+* You do not need to add serializers or deserializers for STL types like `std::vector`: the library already implements these.
+
+#### Simplify your life with macros
+
+If you just want to serialize/deserialize some structs, the `to_json`/`from_json` functions can be a lot of boilerplate.
+
+There are two macros to make your life easier as long as you (1) want to use a JSON object as serialization and (2) want to use the member variable names as object keys in that object:
+
+- `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(name, member1, member2, ...)` is to be defined inside the namespace of the class/struct to create code for.
+- `NLOHMANN_DEFINE_TYPE_INTRUSIVE(name, member1, member2, ...)` is to be defined inside the class/struct to create code for. This macro can also access private members.
+
+In both macros, the first parameter is the name of the class/struct, and all remaining parameters name the members.
+
+##### Examples
+
+The `to_json`/`from_json` functions for the `person` struct above can be created with:
+
+```cpp
+namespace ns {
+    NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(person, name, address, age)
+}
+```
+
+Here is an example with private members, where `NLOHMANN_DEFINE_TYPE_INTRUSIVE` is needed:
+
+```cpp
+namespace ns {
+    class address {
+      private:
+        std::string street;
+        int housenumber;
+        int postcode;
+
+      public:
+        NLOHMANN_DEFINE_TYPE_INTRUSIVE(address, street, housenumber, postcode)
+    };
+}
+```
+
+#### How do I convert third-party types?
+
+This requires a bit more advanced technique. But first, let's see how this conversion mechanism works:
+
+The library uses **JSON Serializers** to convert types to json.
+The default serializer for `nlohmann::json` is `nlohmann::adl_serializer` (ADL means [Argument-Dependent Lookup](https://en.cppreference.com/w/cpp/language/adl)).
+
+It is implemented like this (simplified):
+
+```cpp
+template <typename T>
+struct adl_serializer {
+    static void to_json(json& j, const T& value) {
+        // calls the "to_json" method in T's namespace
+    }
+
+    static void from_json(const json& j, T& value) {
+        // same thing, but with the "from_json" method
+    }
+};
+```
+
+This serializer works fine when you have control over the type's namespace. However, what about `boost::optional` or `std::filesystem::path` (C++17)? Hijacking the `boost` namespace is pretty bad, and it's illegal to add something other than template specializations to `std`...
+
+To solve this, you need to add a specialization of `adl_serializer` to the `nlohmann` namespace, here's an example:
+
+```cpp
+// partial specialization (full specialization works too)
+namespace nlohmann {
+    template <typename T>
+    struct adl_serializer<boost::optional<T>> {
+        static void to_json(json& j, const boost::optional<T>& opt) {
+            if (opt == boost::none) {
+                j = nullptr;
+            } else {
+              j = *opt; // this will call adl_serializer<T>::to_json which will
+                        // find the free function to_json in T's namespace!
+            }
+        }
+
+        static void from_json(const json& j, boost::optional<T>& opt) {
+            if (j.is_null()) {
+                opt = boost::none;
+            } else {
+                opt = j.template get<T>(); // same as above, but with
+                                           // adl_serializer<T>::from_json
+            }
+        }
+    };
+}
+```
+
+#### How can I use `get()` for non-default constructible/non-copyable types?
+
+There is a way, if your type is [MoveConstructible](https://en.cppreference.com/w/cpp/named_req/MoveConstructible). You will need to specialize the `adl_serializer` as well, but with a special `from_json` overload:
+
+```cpp
+struct move_only_type {
+    move_only_type() = delete;
+    move_only_type(int ii): i(ii) {}
+    move_only_type(const move_only_type&) = delete;
+    move_only_type(move_only_type&&) = default;
+
+    int i;
+};
+
+namespace nlohmann {
+    template <>
+    struct adl_serializer<move_only_type> {
+        // note: the return type is no longer 'void', and the method only takes
+        // one argument
+        static move_only_type from_json(const json& j) {
+            return {j.template get<int>()};
+        }
+
+        // Here's the catch! You must provide a to_json method! Otherwise, you
+        // will not be able to convert move_only_type to json, since you fully
+        // specialized adl_serializer on that type
+        static void to_json(json& j, move_only_type t) {
+            j = t.i;
+        }
+    };
+}
+```
+
+#### Can I write my own serializer? (Advanced use)
+
+Yes. You might want to take a look at [`unit-udt.cpp`](https://github.com/nlohmann/json/blob/develop/tests/src/unit-udt.cpp) in the test suite, to see a few examples.
+
+If you write your own serializer, you'll need to do a few things:
+
+- use a different `basic_json` alias than `nlohmann::json` (the last template parameter of `basic_json` is the `JSONSerializer`)
+- use your `basic_json` alias (or a template parameter) in all your `to_json`/`from_json` methods
+- use `nlohmann::to_json` and `nlohmann::from_json` when you need ADL
+
+Here is an example, without simplifications, that only accepts types with a size <= 32, and uses ADL.
+
+```cpp
+// You should use void as a second template argument
+// if you don't need compile-time checks on T
+template<typename T, typename SFINAE = typename std::enable_if<sizeof(T) <= 32>::type>
+struct less_than_32_serializer {
+    template <typename BasicJsonType>
+    static void to_json(BasicJsonType& j, T value) {
+        // we want to use ADL, and call the correct to_json overload
+        using nlohmann::to_json; // this method is called by adl_serializer,
+                                 // this is where the magic happens
+        to_json(j, value);
+    }
+
+    template <typename BasicJsonType>
+    static void from_json(const BasicJsonType& j, T& value) {
+        // same thing here
+        using nlohmann::from_json;
+        from_json(j, value);
+    }
+};
+```
+
+Be **very** careful when reimplementing your serializer, you can stack overflow if you don't pay attention:
+
+```cpp
+template <typename T, void>
+struct bad_serializer
+{
+    template <typename BasicJsonType>
+    static void to_json(BasicJsonType& j, const T& value) {
+      // this calls BasicJsonType::json_serializer<T>::to_json(j, value);
+      // if BasicJsonType::json_serializer == bad_serializer ... oops!
+      j = value;
+    }
+
+    template <typename BasicJsonType>
+    static void to_json(const BasicJsonType& j, T& value) {
+      // this calls BasicJsonType::json_serializer<T>::from_json(j, value);
+      // if BasicJsonType::json_serializer == bad_serializer ... oops!
+      value = j.template get<T>(); // oops!
+    }
+};
+```
+
+### Specializing enum conversion
+
+By default, enum values are serialized to JSON as integers. In some cases this could result in undesired behavior. If an enum is modified or re-ordered after data has been serialized to JSON, the later de-serialized JSON data may be undefined or a different enum value than was originally intended.
+
+It is possible to more precisely specify how a given enum is mapped to and from JSON as shown below:
+
+```cpp
+// example enum type declaration
+enum TaskState {
+    TS_STOPPED,
+    TS_RUNNING,
+    TS_COMPLETED,
+    TS_INVALID=-1,
+};
+
+// map TaskState values to JSON as strings
+NLOHMANN_JSON_SERIALIZE_ENUM( TaskState, {
+    {TS_INVALID, nullptr},
+    {TS_STOPPED, "stopped"},
+    {TS_RUNNING, "running"},
+    {TS_COMPLETED, "completed"},
+})
+```
+
+The `NLOHMANN_JSON_SERIALIZE_ENUM()` macro declares a set of `to_json()` / `from_json()` functions for type `TaskState` while avoiding repetition and boilerplate serialization code.
+
+**Usage:**
+
+```cpp
+// enum to JSON as string
+json j = TS_STOPPED;
+assert(j == "stopped");
+
+// json string to enum
+json j3 = "running";
+assert(j3.template get<TaskState>() == TS_RUNNING);
+
+// undefined json value to enum (where the first map entry above is the default)
+json jPi = 3.14;
+assert(jPi.template get<TaskState>() == TS_INVALID );
+```
+
+Just as in [Arbitrary Type Conversions](#arbitrary-types-conversions) above,
+- `NLOHMANN_JSON_SERIALIZE_ENUM()` MUST be declared in your enum type's namespace (which can be the global namespace), or the library will not be able to locate it, and it will default to integer serialization.
+- It MUST be available (e.g., proper headers must be included) everywhere you use the conversions.
+
+Other Important points:
+- When using `template get<ENUM_TYPE>()`, undefined JSON values will default to the first pair specified in your map. Select this default pair carefully.
+- If an enum or JSON value is specified more than once in your map, the first matching occurrence from the top of the map will be returned when converting to or from JSON.
+
+### Binary formats (BSON, CBOR, MessagePack, UBJSON, and BJData)
+
+Though JSON is a ubiquitous data format, it is not a very compact format suitable for data exchange, for instance over a network. Hence, the library supports [BSON](https://bsonspec.org) (Binary JSON), [CBOR](https://cbor.io) (Concise Binary Object Representation), [MessagePack](https://msgpack.org), [UBJSON](https://ubjson.org) (Universal Binary JSON Specification) and [BJData](https://neurojson.org/bjdata) (Binary JData) to efficiently encode JSON values to byte vectors and to decode such vectors.
+
+```cpp
+// create a JSON value
+json j = R"({"compact": true, "schema": 0})"_json;
+
+// serialize to BSON
+std::vector<std::uint8_t> v_bson = json::to_bson(j);
+
+// 0x1B, 0x00, 0x00, 0x00, 0x08, 0x63, 0x6F, 0x6D, 0x70, 0x61, 0x63, 0x74, 0x00, 0x01, 0x10, 0x73, 0x63, 0x68, 0x65, 0x6D, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+
+// roundtrip
+json j_from_bson = json::from_bson(v_bson);
+
+// serialize to CBOR
+std::vector<std::uint8_t> v_cbor = json::to_cbor(j);
+
+// 0xA2, 0x67, 0x63, 0x6F, 0x6D, 0x70, 0x61, 0x63, 0x74, 0xF5, 0x66, 0x73, 0x63, 0x68, 0x65, 0x6D, 0x61, 0x00
+
+// roundtrip
+json j_from_cbor = json::from_cbor(v_cbor);
+
+// serialize to MessagePack
+std::vector<std::uint8_t> v_msgpack = json::to_msgpack(j);
+
+// 0x82, 0xA7, 0x63, 0x6F, 0x6D, 0x70, 0x61, 0x63, 0x74, 0xC3, 0xA6, 0x73, 0x63, 0x68, 0x65, 0x6D, 0x61, 0x00
+
+// roundtrip
+json j_from_msgpack = json::from_msgpack(v_msgpack);
+
+// serialize to UBJSON
+std::vector<std::uint8_t> v_ubjson = json::to_ubjson(j);
+
+// 0x7B, 0x69, 0x07, 0x63, 0x6F, 0x6D, 0x70, 0x61, 0x63, 0x74, 0x54, 0x69, 0x06, 0x73, 0x63, 0x68, 0x65, 0x6D, 0x61, 0x69, 0x00, 0x7D
+
+// roundtrip
+json j_from_ubjson = json::from_ubjson(v_ubjson);
+```
+
+The library also supports binary types from BSON, CBOR (byte strings), and MessagePack (bin, ext, fixext). They are stored by default as `std::vector<std::uint8_t>` to be processed outside the library.
+
+```cpp
+// CBOR byte string with payload 0xCAFE
+std::vector<std::uint8_t> v = {0x42, 0xCA, 0xFE};
+
+// read value
+json j = json::from_cbor(v);
+
+// the JSON value has type binary
+j.is_binary(); // true
+
+// get reference to stored binary value
+auto& binary = j.get_binary();
+
+// the binary value has no subtype (CBOR has no binary subtypes)
+binary.has_subtype(); // false
+
+// access std::vector<std::uint8_t> member functions
+binary.size(); // 2
+binary[0]; // 0xCA
+binary[1]; // 0xFE
+
+// set subtype to 0x10
+binary.set_subtype(0x10);
+
+// serialize to MessagePack
+auto cbor = json::to_msgpack(j); // 0xD5 (fixext2), 0x10, 0xCA, 0xFE
+```
+
+## Customers
+
+The library is used in multiple projects, applications, operating systems, etc. The list below is not exhaustive, but the result of an internet search. If you know further customers of the library, please let me know, see [contact](#contact).
+
+[![](docs/mkdocs/docs/images/customers.png)](https://json.nlohmann.me/home/customers/)
+
+## Supported compilers
+
+Though it's 2024 already, the support for C++11 is still a bit sparse. Currently, the following compilers are known to work:
+
+- GCC 4.8 - 14.2 (and possibly later)
+- Clang 3.4 - 20.0 (and possibly later)
+- Apple Clang 9.1 - 16.1 (and possibly later)
+- Intel C++ Compiler 17.0.2 (and possibly later)
+- Nvidia CUDA Compiler 11.0.221 (and possibly later)
+- Microsoft Visual C++ 2015 / Build Tools 14.0.25123.0 (and possibly later)
+- Microsoft Visual C++ 2017 / Build Tools 15.5.180.51428 (and possibly later)
+- Microsoft Visual C++ 2019 / Build Tools 16.3.1+1def00d3d (and possibly later)
+- Microsoft Visual C++ 2022 / Build Tools 19.30.30709.0 (and possibly later)
+
+I would be happy to learn about other compilers/versions.
+
+Please note:
+
+- GCC 4.8 has a bug [57824](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57824)): multiline raw strings cannot be the arguments to macros. Don't use multiline raw strings directly in macros with this compiler.
+- Android defaults to using very old compilers and C++ libraries. To fix this, add the following to your `Application.mk`. This will switch to the LLVM C++ library, the Clang compiler, and enable C++11 and other features disabled by default.
+
+    ```
+    APP_STL := c++_shared
+    NDK_TOOLCHAIN_VERSION := clang3.6
+    APP_CPPFLAGS += -frtti -fexceptions
+    ```
+
+    The code compiles successfully with [Android NDK](https://developer.android.com/ndk/index.html?hl=ml), Revision 9 - 11 (and possibly later) and [CrystaX's Android NDK](https://www.crystax.net/en/android/ndk) version 10.
+
+- For GCC running on MinGW or Android SDK, the error `'to_string' is not a member of 'std'` (or similarly, for `strtod` or `strtof`) may occur. Note this is not an issue with the code,  but rather with the compiler itself. On Android, see above to build with a newer environment.  For MinGW, please refer to [this site](https://tehsausage.com/mingw-to-string) and [this discussion](https://github.com/nlohmann/json/issues/136) for information on how to fix this bug. For Android NDK using `APP_STL := gnustl_static`, please refer to [this discussion](https://github.com/nlohmann/json/issues/219).
+
+- Unsupported versions of GCC and Clang are rejected by `#error` directives. This can be switched off by defining `JSON_SKIP_UNSUPPORTED_COMPILER_CHECK`. Note that you can expect no support in this case.
+
+The following compilers are currently used in continuous integration at [AppVeyor](https://ci.appveyor.com/project/nlohmann/json), [Cirrus CI](https://cirrus-ci.com/github/nlohmann/json), and [GitHub Actions](https://github.com/nlohmann/json/actions):
+
+| Compiler                                                                                               | Operating System   | CI Provider    |
+|--------------------------------------------------------------------------------------------------------|--------------------|----------------|
+| Apple Clang 14.0.0 (clang-1400.0.29.202); Xcode 14.1                                                   | macOS 13.7         | GitHub Actions |
+| Apple Clang 14.0.0 (clang-1400.0.29.202); Xcode 14.2                                                   | macOS 13.7         | GitHub Actions |
+| Apple Clang 14.0.3 (clang-1403.0.22.14.1); Xcode 14.3                                                  | macOS 13.7         | GitHub Actions |
+| Apple Clang 14.0.3 (clang-1403.0.22.14.1); Xcode 14.3.1                                                | macOS 13.7.1       | GitHub Actions |
+| Apple Clang 15.0.0 (clang-1500.0.40.1); Xcode 15.0.1                                                   | macOS 13.7         | GitHub Actions |
+| Apple Clang 15.0.0 (clang-1500.1.0.2.5); Xcode 15.1                                                    | macOS 13.7         | GitHub Actions |
+| Apple Clang 15.0.0 (clang-1500.1.0.2.5); Xcode 15.2                                                    | macOS 13.7         | GitHub Actions |
+| Apple Clang 15.0.0 (clang-1500.3.9.4); Xcode 15.3                                                      | macOS 14.7         | GitHub Actions |
+| Apple Clang 15.0.0 (clang-1500.3.9.4); Xcode 15.4                                                      | macOS 14.7         | GitHub Actions |
+| Apple Clang 16.0.0 (clang-1600.0.26.3); Xcode 16.0                                                     | macOS 15.0.1       | GitHub Actions |
+| Apple Clang 16.0.0 (clang-1600.0.26.4); Xcode 16.1                                                     | macOS 15.0.1       | GitHub Actions |
+| Clang 3.5.2                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 3.6.2                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 3.7.1                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 3.8.1                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 3.9.1                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 4.0.1                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 5.0.2                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 6.0.1                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 7.0.1                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 8.0.0                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 9.0.0                                                                                            | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 10.0.0                                                                                           | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Clang 10.0.0 with GNU-like command-line                                                                | Windows-10.0.17763 | GitHub Actions |
+| Clang 11.0.0 with GNU-like command-line                                                                | Windows-10.0.17763 | GitHub Actions |
+| Clang 11.0.0 with MSVC-like command-line                                                               | Windows-10.0.17763 | GitHub Actions |
+| Clang 11.0.0                                                                                           | Ubuntu 20.04.3 LTS | GitHub Actions |
+| Clang 12.0.0                                                                                           | Ubuntu 20.04.3 LTS | GitHub Actions |
+| Clang 12.0.0 with GNU-like command-line                                                                | Windows-10.0.17763 | GitHub Actions |
+| Clang 13.0.0                                                                                           | Ubuntu 20.04.3 LTS | GitHub Actions |
+| Clang 13.0.0 with GNU-like command-line                                                                | Windows-10.0.17763 | GitHub Actions |
+| Clang 14.0.0                                                                                           | Ubuntu 20.04.3 LTS | GitHub Actions |
+| Clang 14.0.0 with GNU-like command-line                                                                | Windows-10.0.17763 | GitHub Actions |
+| Clang 15.0.0 with GNU-like command-line                                                                | Windows-10.0.17763 | GitHub Actions |
+| Clang 15.0.4                                                                                           | Ubuntu 20.04.3 LTS | GitHub Actions |
+| Clang 16.0.0 (16.0.0-++20221031071727+500876226c60-1~exp1~20221031071831.439)                          | Ubuntu 20.04.3 LTS | GitHub Actions |
+| Clang 16.0.6 (++20231112084702+7cbf1a259152-1~exp1~20231112084757.16)                                  | Ubuntu 20.04.1 LTS | GitHub Actions |
+| Clang 17.0.6 (++20231208085813+6009708b4367-1~exp1~20231208085906.81)                                  | Ubuntu 20.04.1 LTS | GitHub Actions |
+| Clang 18.1.8 (++20240731024826+3b5b5c1ec4a3-1~exp1~20240731144843.145)                                 | Ubuntu 20.04.1 LTS | GitHub Actions |
+| Clang 19.1.2 (++20241016063422+7ba7d8e2f7b6-1~exp1~20241016063541.55)                                  | Ubuntu 20.04.1 LTS | GitHub Actions |
+| Clang 20.0.0 (++20241022113049+f1ade1f874db-1~exp1~20241022113104.1036)                                | Ubuntu 22.04.1 LTS | GitHub Actions |
+| GCC 4.8.5 (Ubuntu 4.8.5-4ubuntu8)                                                                      | Ubuntu 20.04.4 LTS | GitHub Actions |
+| GCC 4.9.3 (Ubuntu 4.9.3-13ubuntu2)                                                                     | Ubuntu 20.04.4 LTS | GitHub Actions |
+| GCC 4.8.5 (Ubuntu 4.8.5-4ubuntu2)                                                                      | Ubuntu 20.04.4 LTS | GitHub Actions |
+| GCC 5.5.0 (Ubuntu 5.5.0-12ubuntu1)                                                                     | Ubuntu 20.04.4 LTS | GitHub Actions |
+| GCC 6.4.0 (Ubuntu 6.4.0-17ubuntu1)                                                                     | Ubuntu 20.04.4 LTS | GitHub Actions |
+| GCC 7.5.0                                                                                              | Ubuntu 22.04.1 LTS | GitHub Actions |
+| GCC 8.1.0 (i686-posix-dwarf-rev0, Built by MinGW-W64 project)                                          | Windows-10.0.17763 | GitHub Actions |
+| GCC 8.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project)                                          | Windows-10.0.17763 | GitHub Actions |
+| GCC 8.5.0                                                                                              | Ubuntu 22.04.1 LTS | GitHub Actions |
+| GCC 9.5.0                                                                                              | Ubuntu 22.04.1 LTS | GitHub Actions |
+| GCC 10.5.0                                                                                             | Ubuntu 22.04.1 LTS | GitHub Actions |
+| GCC 11.1.0                                                                                             | Ubuntu (aarch64)   | Cirrus CI      |
+| GCC 11.5.0                                                                                             | Ubuntu 22.04.1 LTS | GitHub Actions |
+| GCC 12.4.0                                                                                             | Ubuntu 22.04.1 LTS | GitHub Actions |
+| GCC 13.0.0 20220605 (experimental)                                                                     | Ubuntu 20.04.3 LTS | GitHub Actions |
+| GCC 13.3.0                                                                                             | Ubuntu 22.04.1 LTS | GitHub Actions |
+| GCC 14.2.0                                                                                             | Ubuntu 22.04.1 LTS | GitHub Actions |
+| Intel C++ Compiler 2021.5.0.20211109                                                                   | Ubuntu 20.04.3 LTS | GitHub Actions |
+| NVCC 11.0.221                                                                                          | Ubuntu 20.04.3 LTS | GitHub Actions |
+| Visual Studio 14 2015 MSVC 19.0.24241.7 (Build Engine version 14.0.25420.1)                            | Windows-6.3.9600   | AppVeyor       |
+| Visual Studio 15 2017 MSVC 19.16.27035.0 (Build Engine version 15.9.21+g9802d43bc3 for .NET Framework) | Windows-10.0.14393 | AppVeyor       |
+| Visual Studio 16 2019 MSVC 19.28.29912.0 (Build Engine version 16.9.0+57a23d249 for .NET Framework)    | Windows-10.0.17763 | GitHub Actions |
+| Visual Studio 16 2019 MSVC 19.28.29912.0 (Build Engine version 16.9.0+57a23d249 for .NET Framework)    | Windows-10.0.17763 | AppVeyor       |
+| Visual Studio 17 2022 MSVC 19.30.30709.0 (Build Engine version 17.0.31804.368 for .NET Framework)      | Windows-10.0.20348 | GitHub Actions |
+
+
+## Integration
+
+[`json.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json.hpp) is the single required file in `single_include/nlohmann` or [released here](https://github.com/nlohmann/json/releases). You need to add
+
+```cpp
+#include <nlohmann/json.hpp>
+
+// for convenience
+using json = nlohmann::json;
+```
+
+to the files you want to process JSON and set the necessary switches to enable C++11 (e.g., `-std=c++11` for GCC and Clang).
+
+You can further use file [`include/nlohmann/json_fwd.hpp`](https://github.com/nlohmann/json/blob/develop/include/nlohmann/json_fwd.hpp) for forward-declarations. The installation of json_fwd.hpp (as part of cmake's install step), can be achieved by setting `-DJSON_MultipleHeaders=ON`.
+
+### CMake
+
+You can also use the `nlohmann_json::nlohmann_json` interface target in CMake.  This target populates the appropriate usage requirements for `INTERFACE_INCLUDE_DIRECTORIES` to point to the appropriate include directories and `INTERFACE_COMPILE_FEATURES` for the necessary C++11 flags.
+
+#### External
+
+To use this library from a CMake project, you can locate it directly with `find_package()` and use the namespaced imported target from the generated package configuration:
+
+```cmake
+# CMakeLists.txt
+find_package(nlohmann_json 3.2.0 REQUIRED)
+...
+add_library(foo ...)
+...
+target_link_libraries(foo PRIVATE nlohmann_json::nlohmann_json)
+```
+
+The package configuration file, `nlohmann_jsonConfig.cmake`, can be used either from an install tree or directly out of the build tree.
+
+#### Embedded
+
+To embed the library directly into an existing CMake project, place the entire source tree in a subdirectory and call `add_subdirectory()` in your `CMakeLists.txt` file:
+
+```cmake
+# Typically you don't care so much for a third party library's tests to be
+# run from your own project's code.
+set(JSON_BuildTests OFF CACHE INTERNAL "")
+
+# If you only include this third party in PRIVATE source files, you do not
+# need to install it when your main project gets installed.
+# set(JSON_Install OFF CACHE INTERNAL "")
+
+# Don't use include(nlohmann_json/CMakeLists.txt) since that carries with it
+# unintended consequences that will break the build.  It's generally
+# discouraged (although not necessarily well documented as such) to use
+# include(...) for pulling in other CMake projects anyways.
+add_subdirectory(nlohmann_json)
+...
+add_library(foo ...)
+...
+target_link_libraries(foo PRIVATE nlohmann_json::nlohmann_json)
+```
+
+##### Embedded (FetchContent)
+
+Since CMake v3.11,
+[FetchContent](https://cmake.org/cmake/help/v3.11/module/FetchContent.html) can
+be used to automatically download a release as a dependency at configure time.
+
+Example:
+```cmake
+include(FetchContent)
+
+FetchContent_Declare(json URL https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz)
+FetchContent_MakeAvailable(json)
+
+target_link_libraries(foo PRIVATE nlohmann_json::nlohmann_json)
+```
+
+**Note**: It is recommended to use the URL approach described above which is supported as of version 3.10.0. See
+<https://json.nlohmann.me/integration/cmake/#fetchcontent> for more information.
+
+#### Supporting Both
+
+To allow your project to support either an externally supplied or an embedded JSON library, you can use a pattern akin to the following:
+
+``` cmake
+# Top level CMakeLists.txt
+project(FOO)
+...
+option(FOO_USE_EXTERNAL_JSON "Use an external JSON library" OFF)
+...
+add_subdirectory(thirdparty)
+...
+add_library(foo ...)
+...
+# Note that the namespaced target will always be available regardless of the
+# import method
+target_link_libraries(foo PRIVATE nlohmann_json::nlohmann_json)
+```
+```cmake
+# thirdparty/CMakeLists.txt
+...
+if(FOO_USE_EXTERNAL_JSON)
+  find_package(nlohmann_json 3.2.0 REQUIRED)
+else()
+  set(JSON_BuildTests OFF CACHE INTERNAL "")
+  add_subdirectory(nlohmann_json)
+endif()
+...
+```
+
+`thirdparty/nlohmann_json` is then a complete copy of this source tree.
+
+### Package Managers
+
+:beer: If you are using OS X and [Homebrew](https://brew.sh), just type `brew install nlohmann-json` and you're set. If you want the bleeding edge rather than the latest release, use `brew install nlohmann-json --HEAD`. See [nlohmann-json](https://formulae.brew.sh/formula/nlohmann-json) for more information.
+
+If you are using the [Meson Build System](https://mesonbuild.com), add this source tree as a [meson subproject](https://mesonbuild.com/Subprojects.html#using-a-subproject). You may also use the `include.zip` published in this project's [Releases](https://github.com/nlohmann/json/releases) to reduce the size of the vendored source tree. Alternatively, you can get a wrap file by downloading it from [Meson WrapDB](https://wrapdb.mesonbuild.com/nlohmann_json), or simply use `meson wrap install nlohmann_json`. Please see the meson project for any issues regarding the packaging.
+
+The provided `meson.build` can also be used as an alternative to CMake for installing `nlohmann_json` system-wide in which case a pkg-config file is installed. To use it, simply have your build system require the `nlohmann_json` pkg-config dependency. In Meson, it is preferred to use the [`dependency()`](https://mesonbuild.com/Reference-manual.html#dependency) object with a subproject fallback, rather than using the subproject directly.
+
+If you are using [Bazel](https://bazel.build/) you can simply reference this repository using `http_archive` or `git_repository` and depend on `@nlohmann_json//:json`.
+
+If you are using [Conan](https://www.conan.io/) to manage your dependencies, merely add [`nlohmann_json/x.y.z`](https://conan.io/center/nlohmann_json) to your `conanfile`'s requires, where `x.y.z` is the release version you want to use. Please file issues [here](https://github.com/conan-io/conan-center-index/issues) if you experience problems with the packages.
+
+If you are using [Spack](https://www.spack.io/) to manage your dependencies, you can use the [`nlohmann-json` package](https://spack.readthedocs.io/en/latest/package_list.html#nlohmann-json). Please see the [spack project](https://github.com/spack/spack) for any issues regarding the packaging.
+
+If you are using [hunter](https://github.com/cpp-pm/hunter) on your project for external dependencies, then you can use the [nlohmann_json package](https://hunter.readthedocs.io/en/latest/packages/pkg/nlohmann_json.html). Please see the hunter project for any issues regarding the packaging.
+
+If you are using [Buckaroo](https://buckaroo.pm), you can install this library's module with `buckaroo add github.com/buckaroo-pm/nlohmann-json`. Please file issues [here](https://github.com/buckaroo-pm/nlohmann-json). There is a demo repo [here](https://github.com/njlr/buckaroo-nholmann-json-example).
+
+If you are using [vcpkg](https://github.com/Microsoft/vcpkg/) on your project for external dependencies, then you can install the [nlohmann-json package](https://github.com/Microsoft/vcpkg/tree/master/ports/nlohmann-json) with `vcpkg install nlohmann-json` and follow the then displayed descriptions. Please see the vcpkg project for any issues regarding the packaging.
+
+If you are using [cget](https://cget.readthedocs.io/en/latest/), you can install the latest development version with `cget install nlohmann/json`. A specific version can be installed with `cget install nlohmann/json@v3.1.0`. Also, the multiple header version can be installed by adding the `-DJSON_MultipleHeaders=ON` flag (i.e., `cget install nlohmann/json -DJSON_MultipleHeaders=ON`).
+
+If you are using [CocoaPods](https://cocoapods.org), you can use the library by adding pod `"nlohmann_json", '~>3.1.2'` to your podfile (see [an example](https://bitbucket.org/benman/nlohmann_json-cocoapod/src/master/)). Please file issues [here](https://bitbucket.org/benman/nlohmann_json-cocoapod/issues?status=new&status=open).
+
+If you are using [Swift Package Manager](https://swift.org/package-manager/), you can use the library by adding a package dependency to this repository. And target dependency as `.product(name: "nlohmann-json", package: "json")`.
+
+If you are using [NuGet](https://www.nuget.org), you can use the package [nlohmann.json](https://www.nuget.org/packages/nlohmann.json/). Please check [this extensive description](https://github.com/nlohmann/json/issues/1132#issuecomment-452250255) on how to use the package. Please file issues [here](https://github.com/hnkb/nlohmann-json-nuget/issues).
+
+If you are using [conda](https://conda.io/), you can use the package [nlohmann_json](https://github.com/conda-forge/nlohmann_json-feedstock) from [conda-forge](https://conda-forge.org) executing `conda install -c conda-forge nlohmann_json`. Please file issues [here](https://github.com/conda-forge/nlohmann_json-feedstock/issues).
+
+If you are using [MSYS2](https://www.msys2.org/), you can use the [mingw-w64-nlohmann-json](https://packages.msys2.org/base/mingw-w64-nlohmann-json) package, just type `pacman -S mingw-w64-i686-nlohmann-json` or `pacman -S mingw-w64-x86_64-nlohmann-json` for installation. Please file issues [here](https://github.com/msys2/MINGW-packages/issues/new?title=%5Bnlohmann-json%5D) if you experience problems with the packages.
+
+If you are using [MacPorts](https://ports.macports.org), execute `sudo port install nlohmann-json` to install the [nlohmann-json](https://ports.macports.org/port/nlohmann-json/) package.
+
+If you are using [`build2`](https://build2.org), you can use the [`nlohmann-json`](https://cppget.org/nlohmann-json) package from the public repository https://cppget.org or directly from the [package's sources repository](https://github.com/build2-packaging/nlohmann-json). In your project's `manifest` file, just add `depends: nlohmann-json` (probably with some [version constraints](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml#guide-add-remove-deps)). If you are not familiar with using dependencies in `build2`, [please read this introduction](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml).
+Please file issues [here](https://github.com/build2-packaging/nlohmann-json) if you experience problems with the packages.
+
+If you are using [`wsjcpp`](https://wsjcpp.org), you can use the command `wsjcpp install "https://github.com/nlohmann/json:develop"` to get the latest version. Note you can change the branch ":develop" to an existing tag or another branch.
+
+If you are using [`CPM.cmake`](https://github.com/TheLartians/CPM.cmake), you can check this [`example`](https://github.com/TheLartians/CPM.cmake/tree/master/examples/json). After [adding CPM script](https://github.com/TheLartians/CPM.cmake#adding-cpm) to your project, implement the following snippet to your CMake:
+
+```cmake
+CPMAddPackage(
+    NAME nlohmann_json
+    GITHUB_REPOSITORY nlohmann/json
+    VERSION 3.9.1)
+```
+
+### Pkg-config
+
+If you are using bare Makefiles, you can use `pkg-config` to generate the include flags that point to where the library is installed:
+
+```sh
+pkg-config nlohmann_json --cflags
+```
+
+Users of the Meson build system will also be able to use a system-wide library, which will be found by `pkg-config`:
+
+```meson
+json = dependency('nlohmann_json', required: true)
+```
+
+
+## License
+
+<img align="right" src="https://149753425.v2.pressablecdn.com/wp-content/uploads/2009/06/OSIApproved_100X125.png" alt="OSI approved license">
+
+The class is licensed under the [MIT License](https://opensource.org/licenses/MIT):
+
+Copyright &copy; 2013-2024 [Niels Lohmann](https://nlohmann.me)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+* * *
+
+- The class contains the UTF-8 Decoder from Bjoern Hoehrmann which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2008-2009 [Björn Hoehrmann](https://bjoern.hoehrmann.de/) <bjoern@hoehrmann.de>
+- The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](https://florian.loitsch.com/)
+- The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).
+- The class contains parts of [Google Abseil](https://github.com/abseil/abseil-cpp) which is licensed under the [Apache 2.0 License](https://opensource.org/licenses/Apache-2.0).
+
+<img align="right" src="https://git.fsfe.org/reuse/reuse-ci/raw/branch/master/reuse-horizontal.png" alt="REUSE Software">
+
+The library is compliant to version 3.3 of the [**REUSE specification**](https://reuse.software):
+
+- Every source file contains an SPDX copyright header.
+- The full text of all licenses used in the repository can be found in the `LICENSES` folder.
+- File `.reuse/dep5` contains an overview of all files' copyrights and licenses.
+- Run `pipx run reuse lint` to verify the project's REUSE compliance and `pipx run reuse spdx` to generate a SPDX SBOM.
+
+## Contact
+
+If you have questions regarding the library, I would like to invite you to [open an issue at GitHub](https://github.com/nlohmann/json/issues/new/choose). Please describe your request, problem, or question as detailed as possible, and also mention the version of the library you are using as well as the version of your compiler and operating system. Opening an issue at GitHub allows other users and contributors to this library to collaborate. For instance, I have little experience with MSVC, and most issues in this regard have been solved by a growing community. If you have a look at the [closed issues](https://github.com/nlohmann/json/issues?q=is%3Aissue+is%3Aclosed), you will see that we react quite timely in most cases.
+
+Only if your request would contain confidential information, please [send me an email](mailto:mail@nlohmann.me). For encrypted messages, please use [this key](https://keybase.io/nlohmann/pgp_keys.asc).
+
+## Security
+
+[Commits by Niels Lohmann](https://github.com/nlohmann/json/commits) and [releases](https://github.com/nlohmann/json/releases) are signed with this [PGP Key](https://keybase.io/nlohmann/pgp_keys.asc?fingerprint=797167ae41c0a6d9232e48457f3cea63ae251b69).
+
+## Thanks
+
+I deeply appreciate the help of the following people.
+
+<img src="https://raw.githubusercontent.com/nlohmann/json/develop/docs/avatars.png" align="right">
+
+1. [Teemperor](https://github.com/Teemperor) implemented CMake support and lcov integration, realized escape and Unicode handling in the string parser, and fixed the JSON serialization.
+2. [elliotgoodrich](https://github.com/elliotgoodrich) fixed an issue with double deletion in the iterator classes.
+3. [kirkshoop](https://github.com/kirkshoop) made the iterators of the class composable to other libraries.
+4. [wancw](https://github.com/wanwc) fixed a bug that hindered the class to compile with Clang.
+5. Tomas Åblad found a bug in the iterator implementation.
+6. [Joshua C. Randall](https://github.com/jrandall) fixed a bug in the floating-point serialization.
+7. [Aaron Burghardt](https://github.com/aburgh) implemented code to parse streams incrementally. Furthermore, he greatly improved the parser class by allowing the definition of a filter function to discard undesired elements while parsing.
+8. [Daniel Kopeček](https://github.com/dkopecek) fixed a bug in the compilation with GCC 5.0.
+9. [Florian Weber](https://github.com/Florianjw) fixed a bug in and improved the performance of the comparison operators.
+10. [Eric Cornelius](https://github.com/EricMCornelius) pointed out a bug in the handling with NaN and infinity values. He also improved the performance of the string escaping.
+11. [易思龙](https://github.com/likebeta) implemented a conversion from anonymous enums.
+12. [kepkin](https://github.com/kepkin) patiently pushed forward the support for Microsoft Visual studio.
+13. [gregmarr](https://github.com/gregmarr) simplified the implementation of reverse iterators and helped with numerous hints and improvements. In particular, he pushed forward the implementation of user-defined types.
+14. [Caio Luppi](https://github.com/caiovlp) fixed a bug in the Unicode handling.
+15. [dariomt](https://github.com/dariomt) fixed some typos in the examples.
+16. [Daniel Frey](https://github.com/d-frey) cleaned up some pointers and implemented exception-safe memory allocation.
+17. [Colin Hirsch](https://github.com/ColinH) took care of a small namespace issue.
+18. [Huu Nguyen](https://github.com/whoshuu) correct a variable name in the documentation.
+19. [Silverweed](https://github.com/silverweed) overloaded `parse()` to accept an rvalue reference.
+20. [dariomt](https://github.com/dariomt) fixed a subtlety in MSVC type support and implemented the `get_ref()` function to get a reference to stored values.
+21. [ZahlGraf](https://github.com/ZahlGraf) added a workaround that allows compilation using Android NDK.
+22. [whackashoe](https://github.com/whackashoe) replaced a function that was marked as unsafe by Visual Studio.
+23. [406345](https://github.com/406345) fixed two small warnings.
+24. [Glen Fernandes](https://github.com/glenfe) noted a potential portability problem in the `has_mapped_type` function.
+25. [Corbin Hughes](https://github.com/nibroc) fixed some typos in the contribution guidelines.
+26. [twelsby](https://github.com/twelsby) fixed the array subscript operator, an issue that failed the MSVC build, and floating-point parsing/dumping. He further added support for unsigned integer numbers and implemented better roundtrip support for parsed numbers.
+27. [Volker Diels-Grabsch](https://github.com/vog) fixed a link in the README file.
+28. [msm-](https://github.com/msm-) added support for American Fuzzy Lop.
+29. [Annihil](https://github.com/Annihil) fixed an example in the README file.
+30. [Themercee](https://github.com/Themercee) noted a wrong URL in the README file.
+31. [Lv Zheng](https://github.com/lv-zheng) fixed a namespace issue with `int64_t` and `uint64_t`.
+32. [abc100m](https://github.com/abc100m) analyzed the issues with GCC 4.8 and proposed a [partial solution](https://github.com/nlohmann/json/pull/212).
+33. [zewt](https://github.com/zewt) added useful notes to the README file about Android.
+34. [Róbert Márki](https://github.com/robertmrk) added a fix to use move iterators and improved the integration via CMake.
+35. [Chris Kitching](https://github.com/ChrisKitching) cleaned up the CMake files.
+36. [Tom Needham](https://github.com/06needhamt) fixed a subtle bug with MSVC 2015 which was also proposed by [Michael K.](https://github.com/Epidal).
+37. [Mário Feroldi](https://github.com/thelostt) fixed a small typo.
+38. [duncanwerner](https://github.com/duncanwerner) found a really embarrassing performance regression in the 2.0.0 release.
+39. [Damien](https://github.com/dtoma) fixed one of the last conversion warnings.
+40. [Thomas Braun](https://github.com/t-b) fixed a warning in a test case and adjusted MSVC calls in the CI.
+41. [Théo DELRIEU](https://github.com/theodelrieu) patiently and constructively oversaw the long way toward [iterator-range parsing](https://github.com/nlohmann/json/issues/290). He also implemented the magic behind the serialization/deserialization of user-defined types and split the single header file into smaller chunks.
+42. [Stefan](https://github.com/5tefan) fixed a minor issue in the documentation.
+43. [Vasil Dimov](https://github.com/vasild) fixed the documentation regarding conversions from `std::multiset`.
+44. [ChristophJud](https://github.com/ChristophJud) overworked the CMake files to ease project inclusion.
+45. [Vladimir Petrigo](https://github.com/vpetrigo) made a SFINAE hack more readable and added Visual Studio 17 to the build matrix.
+46. [Denis Andrejew](https://github.com/seeekr) fixed a grammar issue in the README file.
+47. [Pierre-Antoine Lacaze](https://github.com/palacaze) found a subtle bug in the `dump()` function.
+48. [TurpentineDistillery](https://github.com/TurpentineDistillery) pointed to [`std::locale::classic()`](https://en.cppreference.com/w/cpp/locale/locale/classic) to avoid too much locale joggling, found some nice performance improvements in the parser, improved the benchmarking code, and realized locale-independent number parsing and printing.
+49. [cgzones](https://github.com/cgzones) had an idea how to fix the Coverity scan.
+50. [Jared Grubb](https://github.com/jaredgrubb) silenced a nasty documentation warning.
+51. [Yixin Zhang](https://github.com/qwename) fixed an integer overflow check.
+52. [Bosswestfalen](https://github.com/Bosswestfalen) merged two iterator classes into a smaller one.
+53. [Daniel599](https://github.com/Daniel599) helped to get Travis execute the tests with Clang's sanitizers.
+54. [Jonathan Lee](https://github.com/vjon) fixed an example in the README file.
+55. [gnzlbg](https://github.com/gnzlbg) supported the implementation of user-defined types.
+56. [Alexej Harm](https://github.com/qis) helped to get the user-defined types working with Visual Studio.
+57. [Jared Grubb](https://github.com/jaredgrubb) supported the implementation of user-defined types.
+58. [EnricoBilla](https://github.com/EnricoBilla) noted a typo in an example.
+59. [Martin Hořeňovský](https://github.com/horenmar) found a way for a 2x speedup for the compilation time of the test suite.
+60. [ukhegg](https://github.com/ukhegg) found proposed an improvement for the examples section.
+61. [rswanson-ihi](https://github.com/rswanson-ihi) noted a typo in the README.
+62. [Mihai Stan](https://github.com/stanmihai4) fixed a bug in the comparison with `nullptr`s.
+63. [Tushar Maheshwari](https://github.com/tusharpm) added [cotire](https://github.com/sakra/cotire) support to speed up the compilation.
+64. [TedLyngmo](https://github.com/TedLyngmo) noted a typo in the README, removed unnecessary bit arithmetic, and fixed some `-Weffc++` warnings.
+65. [Krzysztof Woś](https://github.com/krzysztofwos) made exceptions more visible.
+66. [ftillier](https://github.com/ftillier) fixed a compiler warning.
+67. [tinloaf](https://github.com/tinloaf) made sure all pushed warnings are properly popped.
+68. [Fytch](https://github.com/Fytch) found a bug in the documentation.
+69. [Jay Sistar](https://github.com/Type1J) implemented a Meson build description.
+70. [Henry Lee](https://github.com/HenryRLee) fixed a warning in ICC and improved the iterator implementation.
+71. [Vincent Thiery](https://github.com/vthiery) maintains a package for the Conan package manager.
+72. [Steffen](https://github.com/koemeet) fixed a potential issue with MSVC and `std::min`.
+73. [Mike Tzou](https://github.com/Chocobo1) fixed some typos.
+74. [amrcode](https://github.com/amrcode) noted a misleading documentation about comparison of floats.
+75. [Oleg Endo](https://github.com/olegendo) reduced the memory consumption by replacing `<iostream>` with `<iosfwd>`.
+76. [dan-42](https://github.com/dan-42) cleaned up the CMake files to simplify including/reusing of the library.
+77. [Nikita Ofitserov](https://github.com/himikof) allowed for moving values from initializer lists.
+78. [Greg Hurrell](https://github.com/wincent) fixed a typo.
+79. [Dmitry Kukovinets](https://github.com/DmitryKuk) fixed a typo.
+80. [kbthomp1](https://github.com/kbthomp1) fixed an issue related to the Intel OSX compiler.
+81. [Markus Werle](https://github.com/daixtrose) fixed a typo.
+82. [WebProdPP](https://github.com/WebProdPP) fixed a subtle error in a precondition check.
+83. [Alex](https://github.com/leha-bot) noted an error in a code sample.
+84. [Tom de Geus](https://github.com/tdegeus) reported some warnings with ICC and helped to fix them.
+85. [Perry Kundert](https://github.com/pjkundert) simplified reading from input streams.
+86. [Sonu Lohani](https://github.com/sonulohani) fixed a small compilation error.
+87. [Jamie Seward](https://github.com/jseward) fixed all MSVC warnings.
+88. [Nate Vargas](https://github.com/eld00d) added a Doxygen tag file.
+89. [pvleuven](https://github.com/pvleuven) helped to fix a warning in ICC.
+90. [Pavel](https://github.com/crea7or) helped to fix some warnings in MSVC.
+91. [Jamie Seward](https://github.com/jseward) avoided unnecessary string copies in `find()` and `count()`.
+92. [Mitja](https://github.com/Itja) fixed some typos.
+93. [Jorrit Wronski](https://github.com/jowr) updated the Hunter package links.
+94. [Matthias Möller](https://github.com/TinyTinni) added a `.natvis` for the MSVC debug view.
+95. [bogemic](https://github.com/bogemic) fixed some C++17 deprecation warnings.
+96. [Eren Okka](https://github.com/erengy) fixed some MSVC warnings.
+97. [abolz](https://github.com/abolz) integrated the Grisu2 algorithm for proper floating-point formatting, allowing more roundtrip checks to succeed.
+98. [Vadim Evard](https://github.com/Pipeliner) fixed a Markdown issue in the README.
+99. [zerodefect](https://github.com/zerodefect) fixed a compiler warning.
+100. [Kert](https://github.com/kaidokert) allowed to template the string type in the serialization and added the possibility to override the exceptional behavior.
+101. [mark-99](https://github.com/mark-99) helped fixing an ICC error.
+102. [Patrik Huber](https://github.com/patrikhuber) fixed links in the README file.
+103. [johnfb](https://github.com/johnfb) found a bug in the implementation of CBOR's indefinite length strings.
+104. [Paul Fultz II](https://github.com/pfultz2) added a note on the cget package manager.
+105. [Wilson Lin](https://github.com/wla80) made the integration section of the README more concise.
+106. [RalfBielig](https://github.com/ralfbielig) detected and fixed a memory leak in the parser callback.
+107. [agrianius](https://github.com/agrianius) allowed to dump JSON to an alternative string type.
+108. [Kevin Tonon](https://github.com/ktonon) overworked the C++11 compiler checks in CMake.
+109. [Axel Huebl](https://github.com/ax3l) simplified a CMake check and added support for the [Spack package manager](https://spack.io).
+110. [Carlos O'Ryan](https://github.com/coryan) fixed a typo.
+111. [James Upjohn](https://github.com/jammehcow) fixed a version number in the compilers section.
+112. [Chuck Atkins](https://github.com/chuckatkins) adjusted the CMake files to the CMake packaging guidelines and provided documentation for the CMake integration.
+113. [Jan Schöppach](https://github.com/dns13) fixed a typo.
+114. [martin-mfg](https://github.com/martin-mfg) fixed a typo.
+115. [Matthias Möller](https://github.com/TinyTinni) removed the dependency from `std::stringstream`.
+116. [agrianius](https://github.com/agrianius) added code to use alternative string implementations.
+117. [Daniel599](https://github.com/Daniel599) allowed to use more algorithms with the `items()` function.
+118. [Julius Rakow](https://github.com/jrakow) fixed the Meson include directory and fixed the links to [cppreference.com](cppreference.com).
+119. [Sonu Lohani](https://github.com/sonulohani) fixed the compilation with MSVC 2015 in debug mode.
+120. [grembo](https://github.com/grembo) fixed the test suite and re-enabled several test cases.
+121. [Hyeon Kim](https://github.com/simnalamburt) introduced the macro `JSON_INTERNAL_CATCH` to control the exception handling inside the library.
+122. [thyu](https://github.com/thyu) fixed a compiler warning.
+123. [David Guthrie](https://github.com/LEgregius) fixed a subtle compilation error with Clang 3.4.2.
+124. [Dennis Fischer](https://github.com/dennisfischer) allowed to call `find_package` without installing the library.
+125. [Hyeon Kim](https://github.com/simnalamburt) fixed an issue with a double macro definition.
+126. [Ben Berman](https://github.com/rivertam) made some error messages more understandable.
+127. [zakalibit](https://github.com/zakalibit) fixed a compilation problem with the Intel C++ compiler.
+128. [mandreyel](https://github.com/mandreyel) fixed a compilation problem.
+129. [Kostiantyn Ponomarenko](https://github.com/koponomarenko) added version and license information to the Meson build file.
+130. [Henry Schreiner](https://github.com/henryiii) added support for GCC 4.8.
+131. [knilch](https://github.com/knilch0r) made sure the test suite does not stall when run in the wrong directory.
+132. [Antonio Borondo](https://github.com/antonioborondo) fixed an MSVC 2017 warning.
+133. [Dan Gendreau](https://github.com/dgendreau) implemented the `NLOHMANN_JSON_SERIALIZE_ENUM` macro to quickly define an enum/JSON mapping.
+134. [efp](https://github.com/efp) added line and column information to parse errors.
+135. [julian-becker](https://github.com/julian-becker) added BSON support.
+136. [Pratik Chowdhury](https://github.com/pratikpc) added support for structured bindings.
+137. [David Avedissian](https://github.com/davedissian) added support for Clang 5.0.1 (PS4 version).
+138. [Jonathan Dumaresq](https://github.com/dumarjo) implemented an input adapter to read from `FILE*`.
+139. [kjpus](https://github.com/kjpus) fixed a link in the documentation.
+140. [Manvendra Singh](https://github.com/manu-chroma) fixed a typo in the documentation.
+141. [ziggurat29](https://github.com/ziggurat29) fixed an MSVC warning.
+142. [Sylvain Corlay](https://github.com/SylvainCorlay) added code to avoid an issue with MSVC.
+143. [mefyl](https://github.com/mefyl) fixed a bug when JSON was parsed from an input stream.
+144. [Millian Poquet](https://github.com/mpoquet) allowed to install the library via Meson.
+145. [Michael Behrns-Miller](https://github.com/moodboom) found an issue with a missing namespace.
+146. [Nasztanovics Ferenc](https://github.com/naszta) fixed a compilation issue with libc 2.12.
+147. [Andreas Schwab](https://github.com/andreas-schwab) fixed the endian conversion.
+148. [Mark-Dunning](https://github.com/Mark-Dunning) fixed a warning in MSVC.
+149. [Gareth Sylvester-Bradley](https://github.com/garethsb-sony) added `operator/` for JSON Pointers.
+150. [John-Mark](https://github.com/johnmarkwayve) noted a missing header.
+151. [Vitaly Zaitsev](https://github.com/xvitaly) fixed compilation with GCC 9.0.
+152. [Laurent Stacul](https://github.com/stac47) fixed compilation with GCC 9.0.
+153. [Ivor Wanders](https://github.com/iwanders) helped to reduce the CMake requirement to version 3.1.
+154. [njlr](https://github.com/njlr) updated the Buckaroo instructions.
+155. [Lion](https://github.com/lieff) fixed a compilation issue with GCC 7 on CentOS.
+156. [Isaac Nickaein](https://github.com/nickaein) improved the integer serialization performance and  implemented the `contains()` function.
+157. [past-due](https://github.com/past-due) suppressed an unfixable warning.
+158. [Elvis Oric](https://github.com/elvisoric) improved Meson support.
+159. [Matěj Plch](https://github.com/Afforix) fixed an example in the README.
+160. [Mark Beckwith](https://github.com/wythe) fixed a typo.
+161. [scinart](https://github.com/scinart) fixed bug in the serializer.
+162. [Patrick Boettcher](https://github.com/pboettch) implemented `push_back()` and `pop_back()` for JSON Pointers.
+163. [Bruno Oliveira](https://github.com/nicoddemus) added support for Conda.
+164. [Michele Caini](https://github.com/skypjack) fixed links in the README.
+165. [Hani](https://github.com/hnkb) documented how to install the library with NuGet.
+166. [Mark Beckwith](https://github.com/wythe) fixed a typo.
+167. [yann-morin-1998](https://github.com/yann-morin-1998) helped to reduce the CMake requirement to version 3.1.
+168. [Konstantin Podsvirov](https://github.com/podsvirov) maintains a package for the MSYS2 software distro.
+169. [remyabel](https://github.com/remyabel) added GNUInstallDirs to the CMake files.
+170. [Taylor Howard](https://github.com/taylorhoward92) fixed a unit test.
+171. [Gabe Ron](https://github.com/Macr0Nerd) implemented the `to_string` method.
+172. [Watal M. Iwasaki](https://github.com/heavywatal) fixed a Clang warning.
+173. [Viktor Kirilov](https://github.com/onqtam) switched the unit tests from [Catch](https://github.com/philsquared/Catch) to [doctest](https://github.com/onqtam/doctest)
+174. [Juncheng E](https://github.com/ejcjason) fixed a typo.
+175. [tete17](https://github.com/tete17) fixed a bug in the `contains` function.
+176. [Xav83](https://github.com/Xav83) fixed some cppcheck warnings.
+177. [0xflotus](https://github.com/0xflotus) fixed some typos.
+178. [Christian Deneke](https://github.com/chris0x44) added a const version of `json_pointer::back`.
+179. [Julien Hamaide](https://github.com/crazyjul) made the `items()` function work with custom string types.
+180. [Evan Nemerson](https://github.com/nemequ) updated fixed a bug in Hedley and updated this library accordingly.
+181. [Florian Pigorsch](https://github.com/flopp) fixed a lot of typos.
+182. [Camille Bégué](https://github.com/cbegue) fixed an issue in the conversion from  `std::pair` and `std::tuple` to `json`.
+183. [Anthony VH](https://github.com/AnthonyVH) fixed a compile error in an enum deserialization.
+184. [Yuriy Vountesmery](https://github.com/ua-code-dragon) noted a subtle bug in a preprocessor check.
+185. [Chen](https://github.com/dota17) fixed numerous issues in the library.
+186. [Antony Kellermann](https://github.com/aokellermann) added a CI step for GCC 10.1.
+187. [Alex](https://github.com/gistrec) fixed an MSVC warning.
+188. [Rainer](https://github.com/rvjr) proposed an improvement in the floating-point serialization in CBOR.
+189. [Francois Chabot](https://github.com/FrancoisChabot) made performance improvements in the input adapters.
+190. [Arthur Sonzogni](https://github.com/ArthurSonzogni) documented how the library can be included via `FetchContent`.
+191. [Rimas Misevičius](https://github.com/rmisev) fixed an error message.
+192. [Alexander Myasnikov](https://github.com/alexandermyasnikov) fixed some examples and a link in the README.
+193. [Hubert Chathi](https://github.com/uhoreg) made CMake's version config file architecture-independent.
+194. [OmnipotentEntity](https://github.com/OmnipotentEntity) implemented the binary values for CBOR, MessagePack, BSON, and UBJSON.
+195. [ArtemSarmini](https://github.com/ArtemSarmini) fixed a compilation issue with GCC 10 and fixed a leak.
+196. [Evgenii Sopov](https://github.com/sea-kg) integrated the library to the wsjcpp package manager.
+197. [Sergey Linev](https://github.com/linev) fixed a compiler warning.
+198. [Miguel Magalhães](https://github.com/magamig) fixed the year in the copyright.
+199. [Gareth Sylvester-Bradley](https://github.com/garethsb-sony) fixed a compilation issue with MSVC.
+200. [Alexander “weej” Jones](https://github.com/alex-weej) fixed an example in the README.
+201. [Antoine Cœur](https://github.com/Coeur) fixed some typos in the documentation.
+202. [jothepro](https://github.com/jothepro) updated links to the Hunter package.
+203. [Dave Lee](https://github.com/kastiglione) fixed link in the README.
+204. [Joël Lamotte](https://github.com/Klaim) added instruction for using Build2's package manager.
+205. [Paul Jurczak](https://github.com/pauljurczak) fixed an example in the README.
+206. [Sonu Lohani](https://github.com/sonulohani) fixed a warning.
+207. [Carlos Gomes Martinho](https://github.com/gocarlos) updated the Conan package source.
+208. [Konstantin Podsvirov](https://github.com/podsvirov) fixed the MSYS2 package documentation.
+209. [Tridacnid](https://github.com/Tridacnid) improved the CMake tests.
+210. [Michael](https://github.com/MBalszun) fixed MSVC warnings.
+211. [Quentin Barbarat](https://github.com/quentin-dev) fixed an example in the documentation.
+212. [XyFreak](https://github.com/XyFreak) fixed a compiler warning.
+213. [TotalCaesar659](https://github.com/TotalCaesar659) fixed links in the README.
+214. [Tanuj Garg](https://github.com/tanuj208) improved the fuzzer coverage for UBSAN input.
+215. [AODQ](https://github.com/AODQ) fixed a compiler warning.
+216. [jwittbrodt](https://github.com/jwittbrodt) made `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE` inline.
+217. [pfeatherstone](https://github.com/pfeatherstone) improved the upper bound of arguments of the `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`/`NLOHMANN_DEFINE_TYPE_INTRUSIVE` macros.
+218. [Jan Procházka](https://github.com/jprochazk) fixed a bug in the CBOR parser for binary and string values.
+219. [T0b1-iOS](https://github.com/T0b1-iOS) fixed a bug in the new hash implementation.
+220. [Matthew Bauer](https://github.com/matthewbauer) adjusted the CBOR writer to create tags for binary subtypes.
+221. [gatopeich](https://github.com/gatopeich) implemented an ordered map container for `nlohmann::ordered_json`.
+222. [Érico Nogueira Rolim](https://github.com/ericonr) added support for pkg-config.
+223. [KonanM](https://github.com/KonanM) proposed an implementation for the `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`/`NLOHMANN_DEFINE_TYPE_INTRUSIVE` macros.
+224. [Guillaume Racicot](https://github.com/gracicot) implemented `string_view` support and allowed C++20 support.
+225. [Alex Reinking](https://github.com/alexreinking) improved CMake support for `FetchContent`.
+226. [Hannes Domani](https://github.com/ssbssa) provided a GDB pretty printer.
+227. Lars Wirzenius reviewed the README file.
+228. [Jun Jie](https://github.com/ongjunjie) fixed a compiler path in the CMake scripts.
+229. [Ronak Buch](https://github.com/rbuch) fixed typos in the documentation.
+230. [Alexander Karzhenkov](https://github.com/karzhenkov) fixed a move constructor and the Travis builds.
+231. [Leonardo Lima](https://github.com/leozz37) added CPM.Cmake support.
+232. [Joseph Blackman](https://github.com/jbzdarkid) fixed a warning.
+233. [Yaroslav](https://github.com/YarikTH) updated doctest and implemented unit tests.
+234. [Martin Stump](https://github.com/globberwops) fixed a bug in the CMake files.
+235. [Jaakko Moisio](https://github.com/jasujm) fixed a bug in the input adapters.
+236. [bl-ue](https://github.com/bl-ue) fixed some Markdown issues in the README file.
+237. [William A. Wieselquist](https://github.com/wawiesel) fixed an example from the README.
+238. [abbaswasim](https://github.com/abbaswasim) fixed an example from the README.
+239. [Remy Jette](https://github.com/remyjette) fixed a warning.
+240. [Fraser](https://github.com/frasermarlow) fixed the documentation.
+241. [Ben Beasley](https://github.com/musicinmybrain) updated doctest.
+242. [Doron Behar](https://github.com/doronbehar) fixed pkg-config.pc.
+243. [raduteo](https://github.com/raduteo) fixed a warning.
+244. [David Pfahler](https://github.com/theShmoo) added the possibility to compile the library without I/O support.
+245. [Morten Fyhn Amundsen](https://github.com/mortenfyhn) fixed a typo.
+246. [jpl-mac](https://github.com/jpl-mac) allowed to treat the library as a system header in CMake.
+247. [Jason Dsouza](https://github.com/jasmcaus) fixed the indentation of the CMake file.
+248. [offa](https://github.com/offa) added a link to Conan Center to the documentation.
+249. [TotalCaesar659](https://github.com/TotalCaesar659) updated the links in the documentation to use HTTPS.
+250. [Rafail Giavrimis](https://github.com/grafail) fixed the Google Benchmark default branch.
+251. [Louis Dionne](https://github.com/ldionne) fixed a conversion operator.
+252. [justanotheranonymoususer](https://github.com/justanotheranonymoususer) made the examples in the README more consistent.
+253. [Finkman](https://github.com/Finkman) suppressed some `-Wfloat-equal` warnings.
+254. [Ferry Huberts](https://github.com/fhuberts) fixed `-Wswitch-enum` warnings.
+255. [Arseniy Terekhin](https://github.com/senyai) made the GDB pretty-printer robust against unset variable names.
+256. [Amir Masoud Abdol](https://github.com/amirmasoudabdol) updated the Homebrew command as nlohmann/json is now in homebrew-core.
+257. [Hallot](https://github.com/Hallot) fixed some `-Wextra-semi-stmt warnings`.
+258. [Giovanni Cerretani](https://github.com/gcerretani) fixed `-Wunused` warnings on `JSON_DIAGNOSTICS`.
+259. [Bogdan Popescu](https://github.com/Kapeli) hosts the [docset](https://github.com/Kapeli/Dash-User-Contributions/tree/master/docsets/JSON_for_Modern_C%2B%2B) for offline documentation viewers.
+260. [Carl Smedstad](https://github.com/carlsmedstad) fixed an assertion error when using `JSON_DIAGNOSTICS`.
+261. [miikka75](https://github.com/miikka75) provided an important fix to compile C++17 code with Clang 9.
+262. [Maarten Becker](https://github.com/kernie) fixed a warning for shadowed variables.
+263. [Cristi Vîjdea](https://github.com/axnsan12) fixed typos in the `operator[]` documentation.
+264. [Alex Beregszaszi](https://github.com/axic) fixed spelling mistakes in comments.
+265. [Dirk Stolle](https://github.com/striezel) fixed typos in documentation.
+266. [Daniel Albuschat](https://github.com/daniel-kun) corrected the parameter name in the `parse` documentation.
+267. [Prince Mendiratta](https://github.com/Prince-Mendiratta) fixed a link to the FAQ.
+268. [Florian Albrechtskirchinger](https://github.com/falbrechtskirchinger) implemented `std::string_view` support for object keys and made dozens of other improvements.
+269. [Qianqian Fang](https://github.com/fangq) implemented the Binary JData (BJData) format.
+270. [pketelsen](https://github.com/pketelsen) added macros `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT` and `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT`.
+271. [DarkZeros](https://github.com/DarkZeros) adjusted to code to not clash with Arduino defines.
+272. [flagarde](https://github.com/flagarde) fixed the output of `meta()` for MSVC.
+273. [Giovanni Cerretani](https://github.com/gcerretani) fixed a check for `std::filesystem`.
+274. [Dimitris Apostolou](https://github.com/rex4539) fixed a typo.
+275. [Ferry Huberts](https://github.com/fhuberts) fixed a typo.
+276. [Michael Nosthoff](https://github.com/heinemml) fixed a typo.
+277. [JungHoon Lee](https://github.com/jhnlee) fixed a typo.
+278. [Faruk D.](https://github.com/fdiblen) fixed the CITATION.CFF file.
+279. [Andrea Cocito](https://github.com/puffetto) added a clarification on macro usage to the documentation.
+280. [Krzysiek Karbowiak](https://github.com/kkarbowiak) refactored the tests to use `CHECK_THROWS_WITH_AS`.
+281. [Chaoqi Zhang](https://github.com/prncoprs) fixed a typo.
+282. [ivanovmp](https://github.com/ivanovmp) fixed a whitespace error.
+283. [KsaNL](https://github.com/KsaNL) fixed a build error when including `<windows.h>`.
+284. [Andrea Pappacoda](https://github.com/Tachi107) moved `.pc` and `.cmake` files to `share` directory.
+285. [Wolf Vollprecht](https://github.com/wolfv) added the `patch_inplace` function.
+286. [Jake Zimmerman](https://github.com/jez) highlighted common usage patterns in the README file.
+287. [NN](https://github.com/NN---) added the Visual Studio output directory to `.gitignore`.
+288. [Romain Reignier](https://github.com/romainreignier) improved the performance the vector output adapter.
+289. [Mike](https://github.com/Mike-Leo-Smith) fixed the `std::iterator_traits`.
+290. [Richard Hozák](https://github.com/zxey) added macro `JSON_NO_ENUM` to disable default enum conversions.
+291. [vakokako](https://github.com/vakokako) fixed tests when compiling with C++20.
+292. [Alexander “weej” Jones](https://github.com/alexweej) fixed an example in the README.
+293. [Eli Schwartz](https://github.com/eli-schwartz) added more files to the `include.zip` archive.
+294. [Kevin Lu](https://github.com/kevinlul) fixed a compilation issue when typedefs with certain names were present.
+295. [Trevor Hickey](https://github.com/luxe) improved the description of an example.
+296. [Jef LeCompte](https://github.com/jef) updated the year in the README file.
+297. [Alexandre Hamez](https://github.com/ahamez) fixed a warning.
+298. [Maninderpal Badhan](https://github.com/mbadhan) fixed a typo.
+299. [kevin--](https://github.com/kevin--) added a note to an example in the README file.
+300. [I](https://github.com/wx257osn2) fixed a typo.
+301. [Gregorio Litenstein](https://github.com/Lord-Kamina) fixed the Clang detection.
+302. [Andreas Smas](https://github.com/andoma) added a Doozer badge.
+303. [WanCW](https://github.com/wancw) fixed the string conversion with Clang.
+304. [zhaohuaxishi](https://github.com/zhaohuaxishi) fixed a Doxygen error.
+305. [emvivre](https://github.com/emvivre) removed an invalid parameter from CMake.
+306. [Tobias Hermann](https://github.com/Dobiasd) fixed a link in the README file.
+307. [Michael](https://github.com/traits) fixed a warning.
+308. [Ryan Mulder](https://github.com/ryanjmulder) added `ensure_ascii` to the `dump` function.
+309. [Muri Nicanor](https://github.com/murinicanor) fixed the `sed` discovery in the Makefile.
+310. [David Avedissian](https://github.com/dgavedissian) implemented SFINAE-friendly `iterator_traits`.
+311. [AQNOUCH Mohammed](https://github.com/aqnouch) fixed a typo in the README.
+312. [Gareth Sylvester-Bradley](https://github.com/garethsb) added `operator/=` and `operator/` to construct JSON pointers.
+313. [Michael Macnair](https://github.com/mykter) added support for afl-fuzz testing.
+314. [Berkus Decker](https://github.com/berkus) fixed a typo in the README.
+315. [Illia Polishchuk](https://github.com/effolkronium) improved the CMake testing.
+316. [Ikko Ashimine](https://github.com/eltociear) fixed a typo.
+317. [Raphael Grimm](https://github.com/barcode) added the possibility to define a custom base class.
+318. [tocic](https://github.com/tocic) fixed typos in the documentation.
+319. [Vertexwahn](https://github.com/Vertexwahn) added Bazel build support.
+320. [Dirk Stolle](https://github.com/striezel) fixed typos in the documentation.
+321. [DavidKorczynski](https://github.com/DavidKorczynski) added a CIFuzz CI GitHub action.
+322. [Finkman](https://github.com/Finkman) fixed the debug pretty-printer.
+323. [Florian Segginger](https://github.com/floriansegginger) bumped the years in the README.
+324. [haadfida](https://github.com/haadfida) cleaned up the badges of used services.
+325. [Arsen Arsenović](https://github.com/ArsenArsen) fixed a build error.
+326. [theevilone45](https://github.com/theevilone45) fixed a typo in a CMake file.
+327. [Sergei Trofimovich](https://github.com/trofi) fixed the custom allocator support.
+328. [Joyce](https://github.com/joycebrum) fixed some security issues in the GitHub workflows.
+329. [Nicolas Jakob](https://github.com/njakob) add vcpkg version badge.
+330. [Tomerkm](https://github.com/Tomerkm) added tests.
+331. [No.](https://github.com/tusooa) fixed the use of `get<>` calls.
+332. [taro](https://github.com/tarolling) fixed a typo in the `CODEOWNERS` file.
+333. [Ikko Eltociear Ashimine](https://github.com/eltociear) fixed a typo.
+334. [Felix Yan](https://github.com/felixonmars) fixed a typo in the README.
+335. [HO-COOH](https://github.com/HO-COOH) fixed a parentheses in the documentation.
+336. [Ivor Wanders](https://github.com/iwanders) fixed the examples to catch exception by `const&`.
+337. [miny1233](https://github.com/miny1233) fixed a parentheses in the documentation.
+338. [tomalakgeretkal](https://github.com/tomalakgeretkal) fixed a compilation error.
+339. [alferov](https://github.com/ALF-ONE) fixed a compilation error.
+340. [Craig Scott](https://github.com/craigscott-crascit) fixed a deprecation warning in CMake.
+341. [Vyacheslav Zhdanovskiy](https://github.com/ZeronSix) added macros for serialization-only types.
+342. [Mathieu Westphal](https://github.com/mwestphal) fixed typos.
+343. [scribam](https://github.com/scribam) fixed the MinGW workflow.
+344. [Aleksei Sapitskii](https://github.com/aleksproger) added support for Apple's Swift Package Manager.
+345. [Benjamin Buch](https://github.com/bebuch) fixed the installation path in CMake.
+346. [Colby Haskell](https://github.com/colbychaskell) clarified the parse error message in case a file cannot be opened.
+
+Thanks a lot for helping out! Please [let me know](mailto:mail@nlohmann.me) if I forgot someone.
+
+
+## Used third-party tools
+
+The library itself consists of a single header file licensed under the MIT license. However, it is built, tested, documented, and whatnot using a lot of third-party tools and services. Thanks a lot!
+
+- [**amalgamate.py - Amalgamate C source and header files**](https://github.com/edlund/amalgamate) to create a single header file
+- [**American fuzzy lop**](https://lcamtuf.coredump.cx/afl/) for fuzz testing
+- [**AppVeyor**](https://www.appveyor.com) for [continuous integration](https://ci.appveyor.com/project/nlohmann/json) on Windows
+- [**Artistic Style**](http://astyle.sourceforge.net) for automatic source code indentation
+- [**Clang**](https://clang.llvm.org) for compilation with code sanitizers
+- [**CMake**](https://cmake.org) for build automation
+- [**Codacy**](https://www.codacy.com) for further [code analysis](https://www.codacy.com/app/nlohmann/json)
+- [**Coveralls**](https://coveralls.io) to measure [code coverage](https://coveralls.io/github/nlohmann/json)
+- [**Coverity Scan**](https://scan.coverity.com) for [static analysis](https://scan.coverity.com/projects/nlohmann-json)
+- [**cppcheck**](http://cppcheck.sourceforge.net) for static analysis
+- [**doctest**](https://github.com/onqtam/doctest) for the unit tests
+- [**git-update-ghpages**](https://github.com/rstacruz/git-update-ghpages) to upload the documentation to gh-pages
+- [**GitHub Changelog Generator**](https://github.com/skywinder/github-changelog-generator) to generate the [ChangeLog](https://github.com/nlohmann/json/blob/develop/ChangeLog.md)
+- [**Google Benchmark**](https://github.com/google/benchmark) to implement the benchmarks
+- [**Hedley**](https://nemequ.github.io/hedley/) to avoid re-inventing several compiler-agnostic feature macros
+- [**lcov**](http://ltp.sourceforge.net/coverage/lcov.php) to process coverage information and create an HTML view
+- [**libFuzzer**](https://llvm.org/docs/LibFuzzer.html) to implement fuzz testing for OSS-Fuzz
+- [**Material for MkDocs**](https://squidfunk.github.io/mkdocs-material/) for the style of the documentation site
+- [**MkDocs**](https://www.mkdocs.org) for the documentation site
+- [**OSS-Fuzz**](https://github.com/google/oss-fuzz) for continuous fuzz testing of the library ([project repository](https://github.com/google/oss-fuzz/tree/master/projects/json))
+- [**Probot**](https://probot.github.io) for automating maintainer tasks such as closing stale issues, requesting missing information, or detecting toxic comments.
+- [**Valgrind**](https://valgrind.org) to check for correct memory management
+
+
+## Projects using JSON for Modern C++
+
+The library is currently used in Apple macOS Sierra-Monterey and iOS 10-15. I am not sure what they are using the library for, but I am happy that it runs on so many devices.
+
+
+## Notes
+
+### Character encoding
+
+The library supports **Unicode input** as follows:
+
+- Only **UTF-8** encoded input is supported which is the default encoding for JSON according to [RFC 8259](https://tools.ietf.org/html/rfc8259.html#section-8.1).
+- `std::u16string` and `std::u32string` can be parsed, assuming UTF-16 and UTF-32 encoding, respectively. These encodings are not supported when reading from files or other input containers.
+- Other encodings such as Latin-1 or ISO 8859-1 are **not** supported and will yield parse or serialization errors.
+- [Unicode noncharacters](https://www.unicode.org/faq/private_use.html#nonchar1) will not be replaced by the library.
+- Invalid surrogates (e.g., incomplete pairs such as `\uDEAD`) will yield parse errors.
+- The strings stored in the library are UTF-8 encoded. When using the default string type (`std::string`), note that its length/size functions return the number of stored bytes rather than the number of characters or glyphs.
+- When you store strings with different encodings in the library, calling [`dump()`](https://json.nlohmann.me/api/basic_json/dump/) may throw an exception unless `json::error_handler_t::replace` or `json::error_handler_t::ignore` are used as error handlers.
+- To store wide strings (e.g., `std::wstring`), you need to convert them to a UTF-8 encoded `std::string` before, see [an example](https://json.nlohmann.me/home/faq/#wide-string-handling).
+
+### Comments in JSON
+
+This library does not support comments by default. It does so for three reasons:
+
+1. Comments are not part of the [JSON specification](https://tools.ietf.org/html/rfc8259). You may argue that `//` or `/* */` are allowed in JavaScript, but JSON is not JavaScript.
+2. This was not an oversight: Douglas Crockford [wrote on this](https://plus.google.com/118095276221607585885/posts/RK8qyGVaGSr) in May 2012:
+
+	> I removed comments from JSON because I saw people were using them to hold parsing directives, a practice which would have destroyed interoperability.  I know that the lack of comments makes some people sad, but it shouldn't.
+
+	> Suppose you are using JSON to keep configuration files, which you would like to annotate. Go ahead and insert all the comments you like. Then pipe it through JSMin before handing it to your JSON parser.
+
+3. It is dangerous for interoperability if some libraries would add comment support while others don't. Please check [The Harmful Consequences of the Robustness Principle](https://tools.ietf.org/html/draft-iab-protocol-maintenance-01) on this.
+
+However, you can pass set parameter `ignore_comments` to true in the `parse` function to ignore `//` or `/* */` comments. Comments will then be treated as whitespace.
+
+### Order of object keys
+
+By default, the library does not preserve the **insertion order of object elements**. This is standards-compliant, as the [JSON standard](https://tools.ietf.org/html/rfc8259.html) defines objects as "an unordered collection of zero or more name/value pairs".
+
+If you do want to preserve the insertion order, you can try the type [`nlohmann::ordered_json`](https://github.com/nlohmann/json/issues/2179). Alternatively, you can use a more sophisticated ordered map like [`tsl::ordered_map`](https://github.com/Tessil/ordered-map) ([integration](https://github.com/nlohmann/json/issues/546#issuecomment-304447518)) or [`nlohmann::fifo_map`](https://github.com/nlohmann/fifo_map) ([integration](https://github.com/nlohmann/json/issues/485#issuecomment-333652309)).
+
+### Memory Release
+
+We checked with Valgrind and the Address Sanitizer (ASAN) that there are no memory leaks.
+
+If you find that a parsing program with this library does not release memory, please consider the following case, and it may be unrelated to this library.
+
+**Your program is compiled with glibc.** There is a tunable threshold that glibc uses to decide whether to actually return memory to the system or whether to cache it for later reuse. If in your program you make lots of small allocations and those small allocations are not a contiguous block and are presumably below the threshold, then they will not get returned to the OS.
+Here is a related issue [#1924](https://github.com/nlohmann/json/issues/1924).
+
+### Further notes
+
+- The code contains numerous debug **assertions** which can be switched off by defining the preprocessor macro `NDEBUG`, see the [documentation of `assert`](https://en.cppreference.com/w/cpp/error/assert). In particular, note [`operator[]`](https://json.nlohmann.me/api/basic_json/operator%5B%5D/) implements **unchecked access** for const objects: If the given key is not present, the behavior is undefined (think of a dereferenced null pointer) and yields an [assertion failure](https://github.com/nlohmann/json/issues/289) if assertions are switched on. If you are not sure whether an element in an object exists, use checked access with the [`at()` function](https://json.nlohmann.me/api/basic_json/at/). Furthermore, you can define `JSON_ASSERT(x)` to replace calls to `assert(x)`.
+- As the exact number type is not defined in the [JSON specification](https://tools.ietf.org/html/rfc8259.html), this library tries to choose the best fitting C++ number type automatically. As a result, the type `double` may be used to store numbers which may yield [**floating-point exceptions**](https://github.com/nlohmann/json/issues/181) in certain rare situations if floating-point exceptions have been unmasked in the calling code. These exceptions are not caused by the library and need to be fixed in the calling code, such as by re-masking the exceptions prior to calling library functions.
+- The code can be compiled without C++ **runtime type identification** features; that is, you can use the `-fno-rtti` compiler flag.
+- **Exceptions** are used widely within the library. They can, however, be switched off with either using the compiler flag `-fno-exceptions` or by defining the symbol `JSON_NOEXCEPTION`. In this case, exceptions are replaced by `abort()` calls. You can further control this behavior by defining `JSON_THROW_USER` (overriding `throw`), `JSON_TRY_USER` (overriding `try`), and `JSON_CATCH_USER` (overriding `catch`). Note that `JSON_THROW_USER` should leave the current scope (e.g., by throwing or aborting), as continuing after it may yield undefined behavior. Note the explanatory [`what()`](https://en.cppreference.com/w/cpp/error/exception/what) string of exceptions is not available for MSVC if exceptions are disabled, see [#2824](https://github.com/nlohmann/json/discussions/2824).
+
+## Execute unit tests
+
+To compile and run the tests, you need to execute
+
+```sh
+$ mkdir build
+$ cd build
+$ cmake .. -DJSON_BuildTests=On
+$ cmake --build .
+$ ctest --output-on-failure
+```
+
+Note that during the `ctest` stage, several JSON test files are downloaded from an [external repository](https://github.com/nlohmann/json_test_data). If policies forbid downloading artifacts during testing, you can download the files yourself and pass the directory with the test files via `-DJSON_TestDataDirectory=path` to CMake. Then, no Internet connectivity is required. See [issue #2189](https://github.com/nlohmann/json/issues/2189) for more information.
+
+If the test suite is not found, several test suites will fail like this:
+
+```
+===============================================================================
+json/tests/src/make_test_data_available.hpp:21:
+TEST CASE:  check test suite is downloaded
+
+json/tests/src/make_test_data_available.hpp:23: FATAL ERROR: REQUIRE( utils::check_testsuite_downloaded() ) is NOT correct!
+  values: REQUIRE( false )
+  logged: Test data not found in 'json/cmake-build-debug/json_test_data'.
+          Please execute target 'download_test_data' before running this test suite.
+          See <https://github.com/nlohmann/json#execute-unit-tests> for more information.
+
+===============================================================================
+```
+
+In case you have downloaded the library rather than checked out the code via Git, test `cmake_fetch_content_configure` will fail. Please execute `ctest -LE git_required` to skip these tests. See [issue #2189](https://github.com/nlohmann/json/issues/2189) for more information.
+
+Some tests change the installed files and hence make the whole process not reproducible. Please execute `ctest -LE not_reproducible` to skip these tests. See [issue #2324](https://github.com/nlohmann/json/issues/2324) for more information. Furthermore, assertions must be switched off to ensure reproducible builds (see [discussion 4494](https://github.com/nlohmann/json/discussions/4494)).
+
+Note you need to call `cmake -LE "not_reproducible|git_required"` to exclude both labels. See [issue #2596](https://github.com/nlohmann/json/issues/2596) for more information.
+
+As Intel compilers use unsafe floating point optimization by default, the unit tests may fail. Use flag [`/fp:precise`](https://software.intel.com/content/www/us/en/develop/documentation/cpp-compiler-developer-guide-and-reference/top/compiler-reference/compiler-options/compiler-option-details/floating-point-options/fp-model-fp.html) then.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/WORKSPACE.bazel b/ohos/vap/vap_module/src/main/cpp/include/util/json/WORKSPACE.bazel
new file mode 100644
index 00000000..2b2ae9db
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/WORKSPACE.bazel
@@ -0,0 +1 @@
+workspace(name = "nlohmann_json")
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/ci.cmake b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/ci.cmake
new file mode 100644
index 00000000..efda02dc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/ci.cmake
@@ -0,0 +1,1054 @@
+# number of parallel jobs for CTest
+set(N 10)
+
+###############################################################################
+# Needed tools.
+###############################################################################
+
+include(FindPython3)
+find_package(Python3 COMPONENTS Interpreter)
+
+find_program(ASTYLE_TOOL NAMES astyle)
+execute_process(COMMAND ${ASTYLE_TOOL} --version OUTPUT_VARIABLE ASTYLE_TOOL_VERSION ERROR_VARIABLE ASTYLE_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" ASTYLE_TOOL_VERSION "${ASTYLE_TOOL_VERSION}")
+message(STATUS "🔖 Artistic Style ${ASTYLE_TOOL_VERSION} (${ASTYLE_TOOL})")
+
+find_program(CLANG_TOOL NAMES clang++-HEAD clang++ clang++-20 clang++-19 clang++-18 clang++-17 clang++-16 clang++-15 clang++-14 clang++-13 clang++-12 clang++-11 clang++)
+execute_process(COMMAND ${CLANG_TOOL} --version OUTPUT_VARIABLE CLANG_TOOL_VERSION ERROR_VARIABLE CLANG_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_TOOL_VERSION "${CLANG_TOOL_VERSION}")
+message(STATUS "🔖 Clang ${CLANG_TOOL_VERSION} (${CLANG_TOOL})")
+
+find_program(CLANG_TIDY_TOOL NAMES clang-tidy-20 clang-tidy-19 clang-tidy-18 clang-tidy-17 clang-tidy-16 clang-tidy-15 clang-tidy-14 clang-tidy-13 clang-tidy-12 clang-tidy-11 clang-tidy)
+execute_process(COMMAND ${CLANG_TIDY_TOOL} --version OUTPUT_VARIABLE CLANG_TIDY_TOOL_VERSION ERROR_VARIABLE CLANG_TIDY_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_TIDY_TOOL_VERSION "${CLANG_TIDY_TOOL_VERSION}")
+message(STATUS "🔖 Clang-Tidy ${CLANG_TIDY_TOOL_VERSION} (${CLANG_TIDY_TOOL})")
+
+message(STATUS "🔖 CMake ${CMAKE_VERSION} (${CMAKE_COMMAND})")
+
+find_program(GCC_TOOL NAMES g++-latest g++-HEAD g++ g++-15 g++-14 g++-13 g++-12 g++-11 g++-10)
+execute_process(COMMAND ${GCC_TOOL} --version OUTPUT_VARIABLE GCC_TOOL_VERSION ERROR_VARIABLE GCC_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" GCC_TOOL_VERSION "${GCC_TOOL_VERSION}")
+message(STATUS "🔖 GCC ${GCC_TOOL_VERSION} (${GCC_TOOL})")
+
+find_program(GCOV_TOOL NAMES gcov-HEAD gcov-15 gcov-14 gcov-13 gcov-12 gcov-11 gcov-10 gcov)
+execute_process(COMMAND ${GCOV_TOOL} --version OUTPUT_VARIABLE GCOV_TOOL_VERSION ERROR_VARIABLE GCOV_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" GCOV_TOOL_VERSION "${GCOV_TOOL_VERSION}")
+message(STATUS "🔖 GCOV ${GCOV_TOOL_VERSION} (${GCOV_TOOL})")
+
+find_program(GIT_TOOL NAMES git)
+execute_process(COMMAND ${GIT_TOOL} --version OUTPUT_VARIABLE GIT_TOOL_VERSION ERROR_VARIABLE GIT_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" GIT_TOOL_VERSION "${GIT_TOOL_VERSION}")
+message(STATUS "🔖 Git ${GIT_TOOL_VERSION} (${GIT_TOOL})")
+
+find_program(IWYU_TOOL NAMES include-what-you-use iwyu)
+execute_process(COMMAND ${IWYU_TOOL} --version OUTPUT_VARIABLE IWYU_TOOL_VERSION ERROR_VARIABLE IWYU_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" IWYU_TOOL_VERSION "${IWYU_TOOL_VERSION}")
+message(STATUS "🔖 include-what-you-use ${IWYU_TOOL_VERSION} (${IWYU_TOOL})")
+
+find_program(INFER_TOOL NAMES infer)
+execute_process(COMMAND ${INFER_TOOL} --version OUTPUT_VARIABLE INFER_TOOL_VERSION ERROR_VARIABLE INFER_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" INFER_TOOL_VERSION "${INFER_TOOL_VERSION}")
+message(STATUS "🔖 Infer ${INFER_TOOL_VERSION} (${INFER_TOOL})")
+
+find_program(LCOV_TOOL NAMES lcov)
+execute_process(COMMAND ${LCOV_TOOL} --version OUTPUT_VARIABLE LCOV_TOOL_VERSION ERROR_VARIABLE LCOV_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" LCOV_TOOL_VERSION "${LCOV_TOOL_VERSION}")
+message(STATUS "🔖 LCOV ${LCOV_TOOL_VERSION} (${LCOV_TOOL})")
+
+find_program(NINJA_TOOL NAMES ninja)
+execute_process(COMMAND ${NINJA_TOOL} --version OUTPUT_VARIABLE NINJA_TOOL_VERSION ERROR_VARIABLE NINJA_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" NINJA_TOOL_VERSION "${NINJA_TOOL_VERSION}")
+message(STATUS "🔖 Ninja ${NINJA_TOOL_VERSION} (${NINJA_TOOL})")
+
+find_program(OCLINT_TOOL NAMES oclint-json-compilation-database)
+find_program(OCLINT_VERSION_TOOL NAMES oclint)
+execute_process(COMMAND ${OCLINT_VERSION_TOOL} --version OUTPUT_VARIABLE OCLINT_TOOL_VERSION ERROR_VARIABLE OCLINT_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" OCLINT_TOOL_VERSION "${OCLINT_TOOL_VERSION}")
+message(STATUS "🔖 OCLint ${OCLINT_TOOL_VERSION} (${OCLINT_TOOL})")
+
+find_program(VALGRIND_TOOL NAMES valgrind)
+execute_process(COMMAND ${VALGRIND_TOOL} --version OUTPUT_VARIABLE VALGRIND_TOOL_VERSION ERROR_VARIABLE VALGRIND_TOOL_VERSION)
+string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" VALGRIND_TOOL_VERSION "${VALGRIND_TOOL_VERSION}")
+message(STATUS "🔖 Valgrind ${VALGRIND_TOOL_VERSION} (${VALGRIND_TOOL})")
+
+find_program(GENHTML_TOOL NAMES genhtml)
+find_program(PLOG_CONVERTER_TOOL NAMES plog-converter)
+find_program(PVS_STUDIO_ANALYZER_TOOL NAMES pvs-studio-analyzer)
+find_program(SCAN_BUILD_TOOL NAMES scan-build-15 scan-build-14 scan-build-13 scan-build-12 scan-build-11 scan-build)
+
+# the individual source files
+file(GLOB_RECURSE SRC_FILES ${PROJECT_SOURCE_DIR}/include/nlohmann/*.hpp)
+
+###############################################################################
+# Thorough check with recent compilers
+###############################################################################
+
+# Ignored Clang warnings:
+# -Wno-c++98-compat               The library targets C++11.
+# -Wno-c++98-compat-pedantic      The library targets C++11.
+# -Wno-deprecated-declarations    The library contains annotations for deprecated functions.
+# -Wno-extra-semi-stmt            The library uses std::assert which triggers this warning.
+# -Wno-padded                     We do not care about padding warnings.
+# -Wno-covered-switch-default     All switches list all cases and a default case.
+# -Wno-unsafe-buffer-usage        Otherwise Doctest would not compile.
+
+set(CLANG_CXXFLAGS
+    -Werror
+    -Weverything
+    -Wno-c++98-compat
+    -Wno-c++98-compat-pedantic
+    -Wno-deprecated-declarations
+    -Wno-extra-semi-stmt
+    -Wno-padded
+    -Wno-covered-switch-default
+    -Wno-unsafe-buffer-usage
+)
+
+# Warning flags determined for GCC 14.2.0 with https://github.com/nlohmann/gcc_flags:
+# Ignored GCC warnings:
+# -Wno-abi-tag                    We do not care about ABI tags.
+# -Wno-aggregate-return           The library uses aggregate returns.
+# -Wno-long-long                  The library uses the long long type to interface with system functions.
+# -Wno-namespaces                 The library uses namespaces.
+# -Wno-nrvo                       Doctest triggers this warning.
+# -Wno-padded                     We do not care about padding warnings.
+# -Wno-system-headers             We do not care about warnings in system headers.
+# -Wno-templates                  The library uses templates.
+
+set(GCC_CXXFLAGS
+    -pedantic
+    -Werror
+    --all-warnings
+    --extra-warnings
+    -W
+    -WNSObject-attribute
+    -Wno-abi-tag
+    -Waddress
+    -Waddress-of-packed-member
+    -Wno-aggregate-return
+    -Waggressive-loop-optimizations
+    -Waligned-new=all
+    -Wall
+    -Walloc-size
+    -Walloc-zero
+    -Walloca
+    -Wanalyzer-allocation-size
+    -Wanalyzer-deref-before-check
+    -Wanalyzer-double-fclose
+    -Wanalyzer-double-free
+    -Wanalyzer-exposure-through-output-file
+    -Wanalyzer-exposure-through-uninit-copy
+    -Wanalyzer-fd-access-mode-mismatch
+    -Wanalyzer-fd-double-close
+    -Wanalyzer-fd-leak
+    -Wanalyzer-fd-phase-mismatch
+    -Wanalyzer-fd-type-mismatch
+    -Wanalyzer-fd-use-after-close
+    -Wanalyzer-fd-use-without-check
+    -Wanalyzer-file-leak
+    -Wanalyzer-free-of-non-heap
+    -Wanalyzer-imprecise-fp-arithmetic
+    -Wanalyzer-infinite-loop
+    -Wanalyzer-infinite-recursion
+    -Wanalyzer-jump-through-null
+    -Wanalyzer-malloc-leak
+    -Wanalyzer-mismatching-deallocation
+    -Wanalyzer-null-argument
+    -Wanalyzer-null-dereference
+    -Wanalyzer-out-of-bounds
+    -Wanalyzer-overlapping-buffers
+    -Wanalyzer-possible-null-argument
+    -Wanalyzer-possible-null-dereference
+    -Wanalyzer-putenv-of-auto-var
+    -Wanalyzer-shift-count-negative
+    -Wanalyzer-shift-count-overflow
+    -Wanalyzer-stale-setjmp-buffer
+    -Wanalyzer-symbol-too-complex
+    -Wanalyzer-tainted-allocation-size
+    -Wanalyzer-tainted-array-index
+    -Wanalyzer-tainted-assertion
+    -Wanalyzer-tainted-divisor
+    -Wanalyzer-tainted-offset
+    -Wanalyzer-tainted-size
+    -Wanalyzer-too-complex
+    -Wanalyzer-undefined-behavior-strtok
+    -Wanalyzer-unsafe-call-within-signal-handler
+    -Wanalyzer-use-after-free
+    -Wanalyzer-use-of-pointer-in-stale-stack-frame
+    -Wanalyzer-use-of-uninitialized-value
+    -Wanalyzer-va-arg-type-mismatch
+    -Wanalyzer-va-list-exhausted
+    -Wanalyzer-va-list-leak
+    -Wanalyzer-va-list-use-after-va-end
+    -Wanalyzer-write-to-const
+    -Wanalyzer-write-to-string-literal
+    -Warith-conversion
+    -Warray-bounds=2
+    -Warray-compare
+    -Warray-parameter=2
+    -Wattribute-alias=2
+    -Wattribute-warning
+    -Wattributes
+    -Wbool-compare
+    -Wbool-operation
+    -Wbuiltin-declaration-mismatch
+    -Wbuiltin-macro-redefined
+    -Wc++0x-compat
+    -Wc++11-compat
+    -Wc++11-extensions
+    -Wc++14-compat
+    -Wc++14-extensions
+    -Wc++17-compat
+    -Wc++17-extensions
+    -Wc++1z-compat
+    -Wc++20-compat
+    -Wc++20-extensions
+    -Wc++23-extensions
+    -Wc++26-extensions
+    -Wc++2a-compat
+    -Wcalloc-transposed-args
+    -Wcannot-profile
+    -Wcast-align
+    -Wcast-align=strict
+    -Wcast-function-type
+    -Wcast-qual
+    -Wcast-user-defined
+    -Wcatch-value=3
+    -Wchanges-meaning
+    -Wchar-subscripts
+    -Wclass-conversion
+    -Wclass-memaccess
+    -Wclobbered
+    -Wcomma-subscript
+    -Wcomment
+    -Wcomments
+    -Wcomplain-wrong-lang
+    -Wconditionally-supported
+    -Wconversion
+    -Wconversion-null
+    -Wcoverage-invalid-line-number
+    -Wcoverage-mismatch
+    -Wcoverage-too-many-conditions
+    -Wcpp
+    -Wctad-maybe-unsupported
+    -Wctor-dtor-privacy
+    -Wdangling-else
+    -Wdangling-pointer=2
+    -Wdangling-reference
+    -Wdate-time
+    -Wdelete-incomplete
+    -Wdelete-non-virtual-dtor
+    -Wdeprecated
+    -Wdeprecated-copy
+    -Wdeprecated-copy-dtor
+    -Wdeprecated-declarations
+    -Wdeprecated-enum-enum-conversion
+    -Wdeprecated-enum-float-conversion
+    -Wdisabled-optimization
+    -Wdiv-by-zero
+    -Wdouble-promotion
+    -Wduplicated-branches
+    -Wduplicated-cond
+    -Weffc++
+    -Welaborated-enum-base
+    -Wempty-body
+    -Wendif-labels
+    -Wenum-compare
+    -Wenum-conversion
+    -Wexceptions
+    -Wexpansion-to-defined
+    -Wextra
+    -Wextra-semi
+    -Wflex-array-member-not-at-end
+    -Wfloat-conversion
+    -Wfloat-equal
+    -Wformat -Wformat-contains-nul
+    -Wformat -Wformat-extra-args
+    -Wformat -Wformat-nonliteral
+    -Wformat -Wformat-security
+    -Wformat -Wformat-y2k
+    -Wformat -Wformat-zero-length
+    -Wformat-diag
+    -Wformat-overflow=2
+    -Wformat-signedness
+    -Wformat-truncation=2
+    -Wformat=2
+    -Wframe-address
+    -Wfree-nonheap-object
+    -Wglobal-module
+    -Whardened
+    -Whsa
+    -Wif-not-aligned
+    -Wignored-attributes
+    -Wignored-qualifiers
+    -Wimplicit-fallthrough=5
+    -Winaccessible-base
+    -Winfinite-recursion
+    -Winherited-variadic-ctor
+    -Winit-list-lifetime
+    -Winit-self
+    -Winline
+    -Wint-in-bool-context
+    -Wint-to-pointer-cast
+    -Winterference-size
+    -Winvalid-constexpr
+    -Winvalid-imported-macros
+    -Winvalid-memory-model
+    -Winvalid-offsetof
+    -Winvalid-pch
+    -Winvalid-utf8
+    -Wliteral-suffix
+    -Wlogical-not-parentheses
+    -Wlogical-op
+    -Wno-long-long
+    -Wlto-type-mismatch
+    -Wmain
+    -Wmaybe-uninitialized
+    -Wmemset-elt-size
+    -Wmemset-transposed-args
+    -Wmisleading-indentation
+    -Wmismatched-dealloc
+    -Wmismatched-new-delete
+    -Wmismatched-tags
+    -Wmissing-attributes
+    -Wmissing-braces
+    -Wmissing-declarations
+    -Wmissing-field-initializers
+    -Wmissing-include-dirs
+    -Wmissing-profile
+    -Wmissing-requires
+    -Wmissing-template-keyword
+    -Wmultichar
+    -Wmultiple-inheritance
+    -Wmultistatement-macros
+    -Wno-namespaces
+    -Wnarrowing
+    -Wnoexcept
+    -Wnoexcept-type
+    -Wnon-template-friend
+    -Wnon-virtual-dtor
+    -Wnonnull
+    -Wnonnull-compare
+    -Wnormalized=nfkc
+    -Wno-nrvo
+    -Wnull-dereference
+    -Wodr
+    -Wold-style-cast
+    -Wopenacc-parallelism
+    -Wopenmp
+    -Wopenmp-simd
+    -Woverflow
+    -Woverlength-strings
+    -Woverloaded-virtual=2
+    -Wpacked
+    -Wpacked-bitfield-compat
+    -Wpacked-not-aligned
+    -Wno-padded
+    -Wparentheses
+    -Wpedantic
+    -Wpessimizing-move
+    -Wplacement-new=2
+    -Wpmf-conversions
+    -Wpointer-arith
+    -Wpointer-compare
+    -Wpragmas
+    -Wprio-ctor-dtor
+    -Wpsabi
+    -Wrange-loop-construct
+    -Wredundant-decls
+    -Wredundant-move
+    -Wredundant-tags
+    -Wregister
+    -Wreorder
+    -Wrestrict
+    -Wreturn-local-addr
+    -Wreturn-type
+    -Wscalar-storage-order
+    -Wself-move
+    -Wsequence-point
+    -Wshadow=compatible-local
+    -Wshadow=global
+    -Wshadow=local
+    -Wshift-count-negative
+    -Wshift-count-overflow
+    -Wshift-negative-value
+    -Wshift-overflow=2
+    -Wsign-compare
+    -Wsign-conversion
+    -Wsign-promo
+    -Wsized-deallocation
+    -Wsizeof-array-argument
+    -Wsizeof-array-div
+    -Wsizeof-pointer-div
+    -Wsizeof-pointer-memaccess
+    -Wstack-protector
+    -Wstrict-aliasing=3
+    -Wstrict-null-sentinel
+    -Wstrict-overflow
+    -Wstring-compare
+    -Wstringop-overflow=4
+    -Wstringop-overread
+    -Wstringop-truncation
+    -Wsubobject-linkage
+    -Wsuggest-attribute=cold
+    -Wsuggest-attribute=const
+    -Wsuggest-attribute=format
+    -Wsuggest-attribute=malloc
+    -Wsuggest-attribute=noreturn
+    -Wsuggest-attribute=pure
+    -Wsuggest-attribute=returns_nonnull
+    -Wsuggest-final-methods
+    -Wsuggest-final-types
+    -Wsuggest-override
+    -Wswitch
+    -Wswitch-bool
+    -Wswitch-default
+    -Wswitch-enum
+    -Wswitch-outside-range
+    -Wswitch-unreachable
+    -Wsync-nand
+    -Wsynth
+    -Wno-system-headers
+    -Wtautological-compare
+    -Wno-templates
+    -Wterminate
+    -Wtrampolines
+    -Wtrigraphs
+    -Wtrivial-auto-var-init
+    -Wtsan
+    -Wtype-limits
+    -Wundef
+    -Wunicode
+    -Wuninitialized
+    -Wunknown-pragmas
+    -Wunreachable-code
+    -Wunsafe-loop-optimizations
+    -Wunused
+    -Wunused-but-set-parameter
+    -Wunused-but-set-variable
+    -Wunused-const-variable=2
+    -Wunused-function
+    -Wunused-label
+    -Wunused-local-typedefs
+    -Wunused-macros
+    -Wunused-parameter
+    -Wunused-result
+    -Wunused-value
+    -Wunused-variable
+    -Wuse-after-free=3
+    -Wuseless-cast
+    -Wvarargs
+    -Wvariadic-macros
+    -Wvector-operation-performance
+    -Wvexing-parse
+    -Wvirtual-inheritance
+    -Wvirtual-move-assign
+    -Wvla
+    -Wvla-parameter
+    -Wvolatile
+    -Wvolatile-register-var
+    -Wwrite-strings
+    -Wxor-used-as-pow
+    -Wzero-as-null-pointer-constant
+    -Wzero-length-bounds
+)
+
+add_custom_target(ci_test_gcc
+    COMMAND CXX=${GCC_TOOL} CXXFLAGS="${GCC_CXXFLAGS}" ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_gcc
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_gcc
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_gcc && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with GCC using maximal warning flags"
+)
+
+add_custom_target(ci_test_clang
+    COMMAND CXX=${CLANG_TOOL} CXXFLAGS="${CLANG_CXXFLAGS}" ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_clang
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_clang
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_clang && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with Clang using maximal warning flags"
+)
+
+###############################################################################
+# Different C++ Standards.
+###############################################################################
+
+foreach(CXX_STANDARD 11 14 17 20 23)
+    add_custom_target(ci_test_gcc_cxx${CXX_STANDARD}
+        COMMAND CXX=${GCC_TOOL} CXXFLAGS="${GCC_CXXFLAGS}" ${CMAKE_COMMAND}
+            -DCMAKE_BUILD_TYPE=Debug -GNinja
+            -DJSON_BuildTests=ON -DJSON_FastTests=ON
+            -DJSON_TestStandards=${CXX_STANDARD}
+            -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_gcc_cxx${CXX_STANDARD}
+        COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_gcc_cxx${CXX_STANDARD}
+        COMMAND cd ${PROJECT_BINARY_DIR}/build_gcc_cxx${CXX_STANDARD} && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+        COMMENT "Compile and test with GCC for C++${CXX_STANDARD}"
+    )
+
+    add_custom_target(ci_test_clang_cxx${CXX_STANDARD}
+        COMMAND CXX=${CLANG_TOOL} CXXFLAGS="${CLANG_CXXFLAGS}" ${CMAKE_COMMAND}
+            -DCMAKE_BUILD_TYPE=Debug -GNinja
+            -DJSON_BuildTests=ON -DJSON_FastTests=ON
+            -DJSON_TestStandards=${CXX_STANDARD}
+            -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_clang_cxx${CXX_STANDARD}
+        COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_clang_cxx${CXX_STANDARD}
+        COMMAND cd ${PROJECT_BINARY_DIR}/build_clang_cxx${CXX_STANDARD} && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+        COMMENT "Compile and test with Clang for C++${CXX_STANDARD}"
+    )
+
+    add_custom_target(ci_test_clang_libcxx_cxx${CXX_STANDARD}
+        COMMAND CXX=${CLANG_TOOL} CXXFLAGS="${CLANG_CXXFLAGS}" ${CMAKE_COMMAND}
+            -DCMAKE_BUILD_TYPE=Debug -GNinja
+            -DJSON_BuildTests=ON -DJSON_FastTests=ON
+            -DJSON_TestStandards=${CXX_STANDARD}
+            -DCMAKE_CXX_FLAGS="-stdlib=libc++"
+            -DCMAKE_EXE_LINKER_FLAGS="-lc++abi"
+            -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_clang_cxx${CXX_STANDARD}
+        COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_clang_cxx${CXX_STANDARD}
+        COMMAND cd ${PROJECT_BINARY_DIR}/build_clang_cxx${CXX_STANDARD} && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+        COMMENT "Compile and test with Clang for C++${CXX_STANDARD} (libc++)"
+    )
+endforeach()
+
+###############################################################################
+# Disable exceptions.
+###############################################################################
+
+add_custom_target(ci_test_noexceptions
+    COMMAND ${CMAKE_COMMAND}
+    -DCMAKE_BUILD_TYPE=Debug -GNinja
+    -DJSON_BuildTests=ON -DCMAKE_CXX_FLAGS=-DJSON_NOEXCEPTION -DDOCTEST_TEST_FILTER=--no-throw
+    -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_noexceptions
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_noexceptions
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_noexceptions && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with exceptions switched off"
+)
+
+###############################################################################
+# Disable implicit conversions.
+###############################################################################
+
+add_custom_target(ci_test_noimplicitconversions
+    COMMAND ${CMAKE_COMMAND}
+    -DCMAKE_BUILD_TYPE=Debug -GNinja
+    -DJSON_BuildTests=ON -DJSON_ImplicitConversions=OFF
+    -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_noimplicitconversions
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_noimplicitconversions
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_noimplicitconversions && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with implicit conversions switched off"
+)
+
+###############################################################################
+# Enable improved diagnostics.
+###############################################################################
+
+add_custom_target(ci_test_diagnostics
+    COMMAND ${CMAKE_COMMAND}
+    -DCMAKE_BUILD_TYPE=Debug -GNinja
+    -DJSON_BuildTests=ON -DJSON_Diagnostics=ON
+    -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_diagnostics
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_diagnostics
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_diagnostics && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with improved diagnostics enabled"
+)
+
+###############################################################################
+# Enable legacy discarded value comparison.
+###############################################################################
+
+add_custom_target(ci_test_legacycomparison
+    COMMAND ${CMAKE_COMMAND}
+    -DCMAKE_BUILD_TYPE=Debug -GNinja
+    -DJSON_BuildTests=ON -DJSON_LegacyDiscardedValueComparison=ON
+    -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_legacycomparison
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_legacycomparison
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_legacycomparison && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with legacy discarded value comparison enabled"
+)
+
+###############################################################################
+# Disable global UDLs.
+###############################################################################
+
+add_custom_target(ci_test_noglobaludls
+    COMMAND ${CMAKE_COMMAND}
+    -DCMAKE_BUILD_TYPE=Debug -GNinja
+    -DJSON_BuildTests=ON -DJSON_FastTests=ON -DJSON_GlobalUDLs=OFF
+    -DCMAKE_CXX_FLAGS=-DJSON_TEST_NO_GLOBAL_UDLS
+    -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_noglobaludls
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_noglobaludls
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_noglobaludls && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with global UDLs disabled"
+)
+
+###############################################################################
+# Coverage.
+###############################################################################
+
+add_custom_target(ci_test_coverage
+    COMMAND CXX=g++ ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja -DCMAKE_CXX_FLAGS="--coverage;-fprofile-arcs;-ftest-coverage"
+        -DJSON_BuildTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_coverage
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_coverage
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_coverage && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+
+    COMMAND CXX=g++ ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja -DCMAKE_CXX_FLAGS="-m32;--coverage;-fprofile-arcs;-ftest-coverage"
+        -DJSON_BuildTests=ON -DJSON_32bitTest=ONLY
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_coverage32
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_coverage32
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_coverage32 && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+
+    COMMAND ${LCOV_TOOL} --directory . --capture --output-file json.info --rc lcov_branch_coverage=1
+    COMMAND ${LCOV_TOOL} -e json.info ${SRC_FILES} --output-file json.info.filtered --rc lcov_branch_coverage=1
+    COMMAND ${CMAKE_SOURCE_DIR}/tests/thirdparty/imapdl/filterbr.py json.info.filtered > json.info.filtered.noexcept
+    COMMAND genhtml --title "JSON for Modern C++" --legend --demangle-cpp --output-directory html --show-details --branch-coverage json.info.filtered.noexcept
+
+    COMMENT "Compile and test with coverage"
+)
+
+###############################################################################
+# Sanitizers.
+###############################################################################
+
+set(CLANG_CXX_FLAGS_SANITIZER "-g -O1 -fsanitize=address -fsanitize=undefined -fsanitize=integer -fsanitize=nullability -fno-omit-frame-pointer -fno-sanitize-recover=all -fno-sanitize=unsigned-integer-overflow -fno-sanitize=unsigned-shift-base")
+
+add_custom_target(ci_test_clang_sanitizer
+    COMMAND CXX=${CLANG_TOOL} CXXFLAGS=${CLANG_CXX_FLAGS_SANITIZER} ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_clang_sanitizer
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_clang_sanitizer
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_clang_sanitizer && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with sanitizers"
+)
+
+###############################################################################
+# Check if header is amalgamated and sources are properly indented.
+###############################################################################
+
+set(ASTYLE_FLAGS --style=allman --indent=spaces=4 --indent-modifiers --indent-switches --indent-preproc-block --indent-preproc-define --indent-col1-comments --pad-oper --pad-header --align-pointer=type --align-reference=type --add-brackets --convert-tabs --close-templates --lineend=linux --preserve-date --formatted)
+
+file(GLOB_RECURSE INDENT_FILES
+    ${PROJECT_SOURCE_DIR}/include/nlohmann/*.hpp
+        ${PROJECT_SOURCE_DIR}/tests/src/*.cpp
+        ${PROJECT_SOURCE_DIR}/tests/src/*.hpp
+        ${PROJECT_SOURCE_DIR}/tests/benchmarks/src/benchmarks.cpp
+    ${PROJECT_SOURCE_DIR}/docs/examples/*.cpp
+)
+
+set(include_dir ${PROJECT_SOURCE_DIR}/single_include/nlohmann)
+set(tool_dir ${PROJECT_SOURCE_DIR}/tools/amalgamate)
+add_custom_target(ci_test_amalgamation
+    COMMAND rm -fr ${include_dir}/json.hpp~ ${include_dir}/json_fwd.hpp~
+    COMMAND cp ${include_dir}/json.hpp ${include_dir}/json.hpp~
+    COMMAND cp ${include_dir}/json_fwd.hpp ${include_dir}/json_fwd.hpp~
+
+    COMMAND ${Python3_EXECUTABLE} ${tool_dir}/amalgamate.py -c ${tool_dir}/config_json.json -s .
+    COMMAND ${Python3_EXECUTABLE} ${tool_dir}/amalgamate.py -c ${tool_dir}/config_json_fwd.json -s .
+    COMMAND ${ASTYLE_TOOL} ${ASTYLE_FLAGS} --suffix=none --quiet ${include_dir}/json.hpp ${include_dir}/json_fwd.hpp
+
+    COMMAND diff ${include_dir}/json.hpp~ ${include_dir}/json.hpp
+    COMMAND diff ${include_dir}/json_fwd.hpp~ ${include_dir}/json_fwd.hpp
+
+    COMMAND ${ASTYLE_TOOL} ${ASTYLE_FLAGS} ${INDENT_FILES}
+    COMMAND for FILE in `find . -name '*.orig'`\; do false \; done
+
+    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+    COMMENT "Check amalgamation and indentation"
+)
+
+###############################################################################
+# Build and test using the amalgamated header
+###############################################################################
+
+add_custom_target(ci_test_single_header
+    COMMAND CXX=${GCC_TOOL} CXXFLAGS="${GCC_CXXFLAGS}" ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON -DJSON_MultipleHeaders=OFF -DJSON_FastTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_single_header
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_single_header
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_single_header && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Compile and test single-header version"
+)
+
+###############################################################################
+# Valgrind.
+###############################################################################
+
+add_custom_target(ci_test_valgrind
+    COMMAND CXX=${GCC_TOOL} ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON -DJSON_Valgrind=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_valgrind
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_valgrind
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_valgrind && ${CMAKE_CTEST_COMMAND} -L valgrind --parallel ${N} --output-on-failure
+    COMMENT "Compile and test with Valgrind"
+)
+
+###############################################################################
+# Check code with Clang Static Analyzer.
+###############################################################################
+
+set(CLANG_ANALYZER_CHECKS "fuchsia.HandleChecker,nullability.NullableDereferenced,nullability.NullablePassedToNonnull,nullability.NullableReturnedFromNonnull,optin.cplusplus.UninitializedObject,optin.cplusplus.VirtualCall,optin.mpi.MPI-Checker,optin.osx.OSObjectCStyleCast,optin.osx.cocoa.localizability.EmptyLocalizationContextChecker,optin.osx.cocoa.localizability.NonLocalizedStringChecker,optin.performance.GCDAntipattern,optin.performance.Padding,optin.portability.UnixAPI,security.FloatLoopCounter,security.insecureAPI.DeprecatedOrUnsafeBufferHandling,security.insecureAPI.bcmp,security.insecureAPI.bcopy,security.insecureAPI.bzero,security.insecureAPI.rand,security.insecureAPI.strcpy,valist.CopyToSelf,valist.Uninitialized,valist.Unterminated,webkit.NoUncountedMemberChecker,webkit.RefCntblBaseVirtualDtor,core.CallAndMessage,core.DivideZero,core.NonNullParamChecker,core.NullDereference,core.StackAddressEscape,core.UndefinedBinaryOperatorResult,core.VLASize,core.uninitialized.ArraySubscript,core.uninitialized.Assign,core.uninitialized.Branch,core.uninitialized.CapturedBlockVariable,core.uninitialized.UndefReturn,cplusplus.InnerPointer,cplusplus.Move,cplusplus.NewDelete,cplusplus.NewDeleteLeaks,cplusplus.PlacementNew,cplusplus.PureVirtualCall,deadcode.DeadStores,nullability.NullPassedToNonnull,nullability.NullReturnedFromNonnull,osx.API,osx.MIG,osx.NumberObjectConversion,osx.OSObjectRetainCount,osx.ObjCProperty,osx.SecKeychainAPI,osx.cocoa.AtSync,osx.cocoa.AutoreleaseWrite,osx.cocoa.ClassRelease,osx.cocoa.Dealloc,osx.cocoa.IncompatibleMethodTypes,osx.cocoa.Loops,osx.cocoa.MissingSuperCall,osx.cocoa.NSAutoreleasePool,osx.cocoa.NSError,osx.cocoa.NilArg,osx.cocoa.NonNilReturnValue,osx.cocoa.ObjCGenerics,osx.cocoa.RetainCount,osx.cocoa.RunLoopAutoreleaseLeak,osx.cocoa.SelfInit,osx.cocoa.SuperDealloc,osx.cocoa.UnusedIvars,osx.cocoa.VariadicMethodTypes,osx.coreFoundation.CFError,osx.coreFoundation.CFNumber,osx.coreFoundation.CFRetainRelease,osx.coreFoundation.containers.OutOfBounds,osx.coreFoundation.containers.PointerSizedValues,security.insecureAPI.UncheckedReturn,security.insecureAPI.decodeValueOfObjCType,security.insecureAPI.getpw,security.insecureAPI.gets,security.insecureAPI.mkstemp,security.insecureAPI.mktemp,security.insecureAPI.vfork,unix.API,unix.Malloc,unix.MallocSizeof,unix.MismatchedDeallocator,unix.Vfork,unix.cstring.BadSizeArg,unix.cstring.NullArg")
+
+add_custom_target(ci_clang_analyze
+    COMMAND CXX=${CLANG_TOOL} ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_clang_analyze
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_clang_analyze && ${SCAN_BUILD_TOOL} -enable-checker ${CLANG_ANALYZER_CHECKS} --use-c++=${CLANG_TOOL} -analyze-headers -o ${PROJECT_BINARY_DIR}/report ninja
+    COMMENT "Check code with Clang Analyzer"
+)
+
+###############################################################################
+# Check code with Cppcheck.
+###############################################################################
+
+add_custom_target(ci_cppcheck
+    COMMAND ${Python3_EXECUTABLE} -mvenv venv_cppcheck
+    COMMAND clang -dM -E -x c++ -std=c++11 ${CMAKE_SOURCE_DIR}/include/nlohmann/thirdparty/hedley/hedley.hpp > default_defines.hpp 2> /dev/null
+    COMMAND venv_cppcheck/bin/pip3 --quiet install -r ${CMAKE_SOURCE_DIR}/cmake/requirements/requirements-cppcheck.txt
+    COMMAND venv_cppcheck/bin/cppcheck --enable=warning --check-level=exhaustive --inline-suppr --inconclusive --force
+            --std=c++11 ${PROJECT_SOURCE_DIR}/include/nlohmann/json.hpp -I ${CMAKE_SOURCE_DIR}/include
+            --error-exitcode=1 --relative-paths=${PROJECT_SOURCE_DIR} -j 10 --include=default_defines.hpp
+            -UJSON_CATCH_USER -UJSON_TRY_USER -UJSON_ASSERT -UJSON_INTERNAL_CATCH -UJSON_THROW
+            -DJSON_HAS_CPP_11 -UJSON_HAS_CPP_14 -UJSON_HAS_CPP_17 -UJSON_HAS_CPP_20 -UJSON_HAS_THREE_WAY_COMPARISON
+    COMMENT "Check code with Cppcheck"
+)
+
+###############################################################################
+# Check code with cpplint.
+###############################################################################
+
+add_custom_target(ci_cpplint
+    COMMAND ${Python3_EXECUTABLE} -mvenv venv_cpplint
+    COMMAND venv_cpplint/bin/pip3 --quiet install -r ${CMAKE_SOURCE_DIR}/cmake/requirements/requirements-cpplint.txt
+    COMMAND venv_cpplint/bin/cpplint --filter=-whitespace,-legal,-runtime/references,-runtime/explicit,-runtime/indentation_namespace,-readability/casting,-readability/nolint --quiet --recursive ${SRC_FILES}
+    COMMENT "Check code with cpplint"
+    WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
+)
+
+###############################################################################
+# Check code with OCLint.
+###############################################################################
+
+file(COPY ${PROJECT_SOURCE_DIR}/single_include/nlohmann/json.hpp DESTINATION ${PROJECT_BINARY_DIR}/src_single)
+file(RENAME ${PROJECT_BINARY_DIR}/src_single/json.hpp ${PROJECT_BINARY_DIR}/src_single/all.cpp)
+file(APPEND "${PROJECT_BINARY_DIR}/src_single/all.cpp" "\n\nint main()\n{}\n")
+
+add_executable(single_all ${PROJECT_BINARY_DIR}/src_single/all.cpp)
+target_compile_features(single_all PRIVATE cxx_std_11)
+
+add_custom_target(ci_oclint
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug
+        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
+        -DJSON_BuildTests=OFF -DJSON_CI=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_oclint
+    COMMAND ${OCLINT_TOOL} -i ${PROJECT_BINARY_DIR}/build_oclint/src_single/all.cpp -p ${PROJECT_BINARY_DIR}/build_oclint --
+        -report-type html -enable-global-analysis --max-priority-1=0 --max-priority-2=1000 --max-priority-3=2000
+        --disable-rule=MultipleUnaryOperator
+        --disable-rule=DoubleNegative
+        --disable-rule=ShortVariableName
+        --disable-rule=GotoStatement
+        --disable-rule=LongLine
+        -o ${PROJECT_BINARY_DIR}/build_oclint/oclint_report.html
+    COMMENT "Check code with OCLint"
+)
+
+###############################################################################
+# Check code with Clang-Tidy.
+###############################################################################
+
+add_custom_target(ci_clang_tidy
+    COMMAND CXX=${CLANG_TOOL} ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_CXX_CLANG_TIDY=${CLANG_TIDY_TOOL}
+        -DJSON_BuildTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_clang_tidy
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_clang_tidy
+    COMMENT "Check code with Clang-Tidy"
+)
+
+###############################################################################
+# Check code with PVS-Studio Analyzer <https://www.viva64.com/en/pvs-studio/>.
+###############################################################################
+
+add_custom_target(ci_pvs_studio
+    COMMAND CXX=${CLANG_TOOL} ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug
+        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
+        -DJSON_BuildTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_pvs_studio
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_pvs_studio && ${PVS_STUDIO_ANALYZER_TOOL} analyze -j 10
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_pvs_studio && ${PLOG_CONVERTER_TOOL} -a'GA:1,2;64:1;CS' -t fullhtml PVS-Studio.log -o pvs
+    COMMENT "Check code with PVS Studio"
+)
+
+###############################################################################
+# Check code with Infer <https://fbinfer.com> static analyzer.
+###############################################################################
+
+add_custom_target(ci_infer
+    COMMAND mkdir -p ${PROJECT_BINARY_DIR}/build_infer
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_infer && ${INFER_TOOL} compile -- ${CMAKE_COMMAND} -DCMAKE_BUILD_TYPE=Debug ${PROJECT_SOURCE_DIR} -DJSON_BuildTests=ON
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_infer && ${INFER_TOOL} run -- make
+    COMMENT "Check code with Infer"
+)
+
+###############################################################################
+# Run test suite with previously downloaded test data.
+###############################################################################
+
+add_custom_target(ci_offline_testdata
+    COMMAND mkdir -p ${PROJECT_BINARY_DIR}/build_offline_testdata/test_data
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_offline_testdata/test_data && ${GIT_TOOL} clone -c advice.detachedHead=false --branch v3.1.0 https://github.com/nlohmann/json_test_data.git --quiet --depth 1
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON -DJSON_FastTests=ON -DJSON_TestDataDirectory=${PROJECT_BINARY_DIR}/build_offline_testdata/test_data/json_test_data
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_offline_testdata
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_offline_testdata
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_offline_testdata && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
+    COMMENT "Check code with previously downloaded test data"
+)
+
+###############################################################################
+# Run test suite when project was not checked out from Git
+###############################################################################
+
+add_custom_target(ci_non_git_tests
+    COMMAND git config --global --add safe.directory ${PROJECT_SOURCE_DIR}
+    COMMAND mkdir -p ${PROJECT_BINARY_DIR}/build_non_git_tests/sources
+    COMMAND cd ${PROJECT_SOURCE_DIR} && for FILE in `${GIT_TOOL} ls-tree --name-only HEAD`\; do cp -r $$FILE ${PROJECT_BINARY_DIR}/build_non_git_tests/sources \; done
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON -DJSON_FastTests=ON
+        -S${PROJECT_BINARY_DIR}/build_non_git_tests/sources -B${PROJECT_BINARY_DIR}/build_non_git_tests
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_non_git_tests
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_non_git_tests && ${CMAKE_CTEST_COMMAND} --parallel ${N} -LE git_required --output-on-failure
+    COMMENT "Check code when project was not checked out from Git"
+)
+
+###############################################################################
+# Run test suite and exclude tests that change installed files
+###############################################################################
+
+add_custom_target(ci_reproducible_tests
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON -DJSON_FastTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_reproducible_tests
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_reproducible_tests
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_reproducible_tests && ${CMAKE_CTEST_COMMAND} --parallel ${N} -LE not_reproducible --output-on-failure
+    COMMENT "Check code and exclude tests that change installed files"
+)
+
+###############################################################################
+# Check if every header in the include folder includes sufficient headers to
+# be compiled individually.
+###############################################################################
+
+set(iwyu_path_and_options ${IWYU_TOOL} -Xiwyu --max_line_length=300)
+
+foreach(SRC_FILE ${SRC_FILES})
+    # get relative path of the header file
+    file(RELATIVE_PATH RELATIVE_SRC_FILE "${PROJECT_SOURCE_DIR}/include/nlohmann" "${SRC_FILE}")
+    # replace slashes and strip suffix
+    string(REPLACE "/" "_" RELATIVE_SRC_FILE "${RELATIVE_SRC_FILE}")
+    string(REPLACE ".hpp" "" RELATIVE_SRC_FILE "${RELATIVE_SRC_FILE}")
+    # create code file
+    file(WRITE "${PROJECT_BINARY_DIR}/src_single/${RELATIVE_SRC_FILE}.cpp" "#include \"${SRC_FILE}\" // IWYU pragma: keep\n\nint main()\n{}\n")
+    # create executable
+    add_executable(single_${RELATIVE_SRC_FILE} EXCLUDE_FROM_ALL ${PROJECT_BINARY_DIR}/src_single/${RELATIVE_SRC_FILE}.cpp)
+    target_include_directories(single_${RELATIVE_SRC_FILE} PRIVATE ${PROJECT_SOURCE_DIR}/include)
+    target_compile_features(single_${RELATIVE_SRC_FILE} PRIVATE cxx_std_11)
+    set_property(TARGET single_${RELATIVE_SRC_FILE} PROPERTY CXX_INCLUDE_WHAT_YOU_USE "${iwyu_path_and_options}")
+    # remember binary for ci_single_binaries target
+    list(APPEND single_binaries single_${RELATIVE_SRC_FILE})
+endforeach()
+
+add_custom_target(ci_single_binaries
+    DEPENDS ${single_binaries}
+    COMMENT "Check if headers are self-contained"
+)
+
+###############################################################################
+# Benchmarks
+###############################################################################
+
+add_custom_target(ci_benchmarks
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Release -GNinja
+        -S${PROJECT_SOURCE_DIR}/benchmarks -B${PROJECT_BINARY_DIR}/build_benchmarks
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_benchmarks --target json_benchmarks
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_benchmarks && ./json_benchmarks
+    COMMENT "Run benchmarks"
+)
+
+###############################################################################
+# CMake flags
+###############################################################################
+
+function(ci_get_cmake version var)
+    set(${var} ${PROJECT_BINARY_DIR}/cmake-${version}/bin/cmake)
+    add_custom_command(
+        OUTPUT ${${var}}
+        COMMAND wget -nc https://github.com/Kitware/CMake/releases/download/v${version}/cmake-${version}.tar.gz
+        COMMAND tar xfz cmake-${version}.tar.gz
+        COMMAND rm cmake-${version}.tar.gz
+        COMMAND ${CMAKE_COMMAND} -S cmake-${version} -B cmake-${version}
+        COMMAND ${CMAKE_COMMAND} --build cmake-${version} --parallel 10
+        WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
+        COMMENT "Download CMake ${version}"
+    )
+    set(${var} ${${var}} PARENT_SCOPE)
+endfunction()
+
+ci_get_cmake(3.1.0 CMAKE_3_1_0_BINARY)
+ci_get_cmake(3.13.0 CMAKE_3_13_0_BINARY)
+
+set(JSON_CMAKE_FLAGS_3_1_0 JSON_Diagnostics JSON_GlobalUDLs JSON_ImplicitConversions JSON_DisableEnumSerialization
+    JSON_LegacyDiscardedValueComparison JSON_Install JSON_MultipleHeaders JSON_SystemInclude JSON_Valgrind)
+set(JSON_CMAKE_FLAGS_3_13_0 JSON_BuildTests)
+
+function(ci_add_cmake_flags_targets flag min_version)
+    string(TOLOWER "ci_cmake_flag_${flag}" flag_target)
+    string(REPLACE . _ min_version_var ${min_version})
+    set(cmake_binary ${CMAKE_${min_version_var}_BINARY})
+    add_custom_target(${flag_target}
+        COMMENT "Check CMake flag ${flag} (CMake ${CMAKE_VERSION})"
+        COMMAND ${CMAKE_COMMAND}
+            -Werror=dev
+            -D${flag}=ON
+            -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_${flag_target}
+    )
+    add_custom_target(${flag_target}_${min_version_var}
+        COMMENT "Check CMake flag ${JSON_CMAKE_FLAG} (CMake ${min_version})"
+        COMMAND mkdir -pv ${PROJECT_BINARY_DIR}/build_${flag_target}_${min_version_var}
+        COMMAND cd ${PROJECT_BINARY_DIR}/build_${flag_target}_${min_version_var}
+            && ${cmake_binary} -Werror=dev ${PROJECT_SOURCE_DIR} -D${flag}=ON
+        DEPENDS ${cmake_binary}
+    )
+    list(APPEND JSON_CMAKE_FLAG_TARGETS ${JSON_CMAKE_FLAG_TARGET} ${flag_target}_${min_version_var})
+    list(APPEND JSON_CMAKE_FLAG_BUILD_DIRS ${PROJECT_BINARY_DIR}/build_${flag_target} ${PROJECT_BINARY_DIR}/build_${flag_target}_${min_version_var})
+    set(JSON_CMAKE_FLAG_TARGETS ${JSON_CMAKE_FLAG_TARGETS} PARENT_SCOPE)
+    set(JSON_CMAKE_FLAG_BUILD_DIRS ${JSON_CMAKE_FLAG_BUILD_DIRS} PARENT_SCOPE)
+endfunction()
+
+foreach(JSON_CMAKE_FLAG ${JSON_CMAKE_FLAGS_3_1_0})
+    ci_add_cmake_flags_targets(${JSON_CMAKE_FLAG} 3.1.0)
+endforeach()
+
+foreach(JSON_CMAKE_FLAG ${JSON_CMAKE_FLAGS_3_13_0})
+    ci_add_cmake_flags_targets(${JSON_CMAKE_FLAG} 3.13.0)
+endforeach()
+
+add_custom_target(ci_cmake_flags
+    DEPENDS ${JSON_CMAKE_FLAG_TARGETS}
+    COMMENT "Check CMake flags"
+)
+
+###############################################################################
+# Use more installed compilers.
+###############################################################################
+
+foreach(COMPILER g++-4.8 g++-4.9 g++-5 g++-6 g++-7 g++-8 g++-9 g++-10 g++-11 clang++-3.5 clang++-3.6 clang++-3.7 clang++-3.8 clang++-3.9 clang++-4.0 clang++-5.0 clang++-6.0 clang++-7 clang++-8 clang++-9 clang++-10 clang++-11 clang++-12 clang++-13 clang++-14 clang++-15 clang++-16 clang++-17 clang++-18 clang++-19 clang++-20)
+    find_program(COMPILER_TOOL NAMES ${COMPILER})
+    if (COMPILER_TOOL)
+        unset(ADDITIONAL_FLAGS)
+
+        add_custom_target(ci_test_compiler_${COMPILER}
+            COMMAND CXX=${COMPILER} ${CMAKE_COMMAND}
+                -DCMAKE_BUILD_TYPE=Debug -GNinja
+                -DJSON_BuildTests=ON -DJSON_FastTests=ON
+                -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_compiler_${COMPILER}
+                ${ADDITIONAL_FLAGS}
+            COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_compiler_${COMPILER}
+            COMMAND cd ${PROJECT_BINARY_DIR}/build_compiler_${COMPILER} && ${CMAKE_CTEST_COMMAND} --parallel ${N} --exclude-regex "test-unicode" --output-on-failure
+            COMMENT "Compile and test with ${COMPILER}"
+        )
+    endif()
+    unset(COMPILER_TOOL CACHE)
+endforeach()
+
+add_custom_target(ci_test_compiler_default
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DJSON_BuildTests=ON -DJSON_FastTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_compiler_default
+        ${ADDITIONAL_FLAGS}
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_compiler_default --parallel ${N}
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_compiler_default && ${CMAKE_CTEST_COMMAND} --parallel ${N} --exclude-regex "test-unicode" -LE git_required --output-on-failure
+    COMMENT "Compile and test with default C++ compiler"
+)
+
+###############################################################################
+# CUDA example
+###############################################################################
+
+add_custom_target(ci_cuda_example
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DCMAKE_CUDA_HOST_COMPILER=g++-8
+        -S${PROJECT_SOURCE_DIR}/tests/cuda_example -B${PROJECT_BINARY_DIR}/build_cuda_example
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_cuda_example
+)
+
+###############################################################################
+# Intel C++ Compiler
+###############################################################################
+
+add_custom_target(ci_icpc
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DCMAKE_C_COMPILER=icc -DCMAKE_CXX_COMPILER=icpc
+        -DJSON_BuildTests=ON -DJSON_FastTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_icpc
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_icpc
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_icpc && ${CMAKE_CTEST_COMMAND} --parallel ${N} --exclude-regex "test-unicode" --output-on-failure
+    COMMENT "Compile and test with ICPC"
+)
+
+###############################################################################
+# REUSE
+###############################################################################
+
+add_custom_target(ci_reuse_compliance
+    COMMAND ${Python3_EXECUTABLE} -mvenv venv_reuse
+    COMMAND venv_reuse/bin/pip3 --quiet install -r ${PROJECT_SOURCE_DIR}/cmake/requirements/requirements-reuse.txt
+    COMMAND venv_reuse/bin/reuse --root ${PROJECT_SOURCE_DIR} lint
+    COMMENT "Check REUSE specification compliance"
+)
+
+###############################################################################
+# test documentation
+###############################################################################
+
+add_custom_target(ci_test_examples
+    COMMAND make CXX="${GCC_TOOL}" check_output_portable -j8
+    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/docs
+    COMMENT "Check that all examples compile and create the desired output"
+)
+
+add_custom_target(ci_test_build_documentation
+    COMMAND ${Python3_EXECUTABLE} -mvenv venv
+    COMMAND venv/bin/pip3 --quiet install -r requirements.txt
+    COMMAND make build
+    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/docs/mkdocs
+    COMMENT "Build the documentation"
+)
+
+###############################################################################
+# Clean up all generated files.
+###############################################################################
+
+add_custom_target(ci_clean
+    COMMAND rm -fr ${PROJECT_BINARY_DIR}/build_* cmake-3.1.0-Darwin64 ${JSON_CMAKE_FLAG_BUILD_DIRS} ${single_binaries}
+    COMMENT "Clean generated directories"
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/config.cmake.in b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/config.cmake.in
new file mode 100644
index 00000000..9a17a7d7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/config.cmake.in
@@ -0,0 +1,15 @@
+include(FindPackageHandleStandardArgs)
+set(${CMAKE_FIND_PACKAGE_NAME}_CONFIG ${CMAKE_CURRENT_LIST_FILE})
+find_package_handle_standard_args(@PROJECT_NAME@ CONFIG_MODE)
+
+if(NOT TARGET @PROJECT_NAME@::@NLOHMANN_JSON_TARGET_NAME@)
+    include("${CMAKE_CURRENT_LIST_DIR}/@NLOHMANN_JSON_TARGETS_EXPORT_NAME@.cmake")
+    if((NOT TARGET @NLOHMANN_JSON_TARGET_NAME@) AND
+       (NOT @PROJECT_NAME@_FIND_VERSION OR
+        @PROJECT_NAME@_FIND_VERSION VERSION_LESS 3.2.0))
+        add_library(@NLOHMANN_JSON_TARGET_NAME@ INTERFACE IMPORTED)
+        set_target_properties(@NLOHMANN_JSON_TARGET_NAME@ PROPERTIES
+            INTERFACE_LINK_LIBRARIES @PROJECT_NAME@::@NLOHMANN_JSON_TARGET_NAME@
+        )
+    endif()
+endif()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/download_test_data.cmake b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/download_test_data.cmake
new file mode 100644
index 00000000..1bb998da
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/download_test_data.cmake
@@ -0,0 +1,56 @@
+set(JSON_TEST_DATA_URL     https://github.com/nlohmann/json_test_data)
+set(JSON_TEST_DATA_VERSION 3.1.0)
+
+# if variable is set, use test data from given directory rather than downloading them
+if(JSON_TestDataDirectory)
+    message(STATUS "Using test data in ${JSON_TestDataDirectory}.")
+    add_custom_target(download_test_data)
+    file(WRITE ${CMAKE_BINARY_DIR}/include/test_data.hpp "#define TEST_DATA_DIRECTORY \"${JSON_TestDataDirectory}\"\n")
+else()
+    find_package(Git)
+    # target to download test data
+    add_custom_target(download_test_data
+        COMMAND test -d json_test_data || ${GIT_EXECUTABLE} clone -c advice.detachedHead=false --branch v${JSON_TEST_DATA_VERSION} ${JSON_TEST_DATA_URL}.git --quiet --depth 1
+        COMMENT "Downloading test data from ${JSON_TEST_DATA_URL} (v${JSON_TEST_DATA_VERSION})"
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+    )
+    # create a header with the path to the downloaded test data
+    file(WRITE ${CMAKE_BINARY_DIR}/include/test_data.hpp "#define TEST_DATA_DIRECTORY \"${CMAKE_BINARY_DIR}/json_test_data\"\n")
+endif()
+
+# determine the operating system (for debug and support purposes)
+find_program(UNAME_COMMAND uname)
+find_program(VER_COMMAND ver)
+find_program(LSB_RELEASE_COMMAND lsb_release)
+find_program(SW_VERS_COMMAND sw_vers)
+set(OS_VERSION_STRINGS "${CMAKE_SYSTEM}")
+if (VER_COMMAND)
+    execute_process(COMMAND ${VER_COMMAND} OUTPUT_VARIABLE VER_COMMAND_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE)
+    set(OS_VERSION_STRINGS "${OS_VERSION_STRINGS}; ${VER_COMMAND_RESULT}")
+endif()
+if (SW_VERS_COMMAND)
+    execute_process(COMMAND ${SW_VERS_COMMAND} OUTPUT_VARIABLE SW_VERS_COMMAND_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+    string(REGEX REPLACE "[ ]*\n" "; " SW_VERS_COMMAND_RESULT "${SW_VERS_COMMAND_RESULT}")
+    set(OS_VERSION_STRINGS "${OS_VERSION_STRINGS}; ${SW_VERS_COMMAND_RESULT}")
+endif()
+if (LSB_RELEASE_COMMAND)
+    execute_process(COMMAND ${LSB_RELEASE_COMMAND} -a OUTPUT_VARIABLE LSB_RELEASE_COMMAND_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+    string(REGEX REPLACE "[ ]*\n" "; " LSB_RELEASE_COMMAND_RESULT "${LSB_RELEASE_COMMAND_RESULT}")
+    set(OS_VERSION_STRINGS "${OS_VERSION_STRINGS}; ${LSB_RELEASE_COMMAND_RESULT}")
+endif()
+if (UNAME_COMMAND)
+    execute_process(COMMAND ${UNAME_COMMAND} -a OUTPUT_VARIABLE UNAME_COMMAND_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+    set(OS_VERSION_STRINGS "${OS_VERSION_STRINGS}; ${UNAME_COMMAND_RESULT}")
+endif()
+
+message(STATUS "Operating system: ${OS_VERSION_STRINGS}")
+
+# determine the compiler (for debug and support purposes)
+if (MSVC)
+    execute_process(COMMAND ${CMAKE_CXX_COMPILER} OUTPUT_VARIABLE CXX_VERSION_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_VARIABLE CXX_VERSION_RESULT ERROR_STRIP_TRAILING_WHITESPACE)
+    set(CXX_VERSION_RESULT "${CXX_VERSION_RESULT}; MSVC_VERSION=${MSVC_VERSION}; MSVC_TOOLSET_VERSION=${MSVC_TOOLSET_VERSION}")
+else()
+    execute_process(COMMAND ${CMAKE_CXX_COMPILER} --version OUTPUT_VARIABLE CXX_VERSION_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+string(REGEX REPLACE "[ ]*\n" "; " CXX_VERSION_RESULT "${CXX_VERSION_RESULT}")
+message(STATUS "Compiler: ${CXX_VERSION_RESULT}")
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/nlohmann_jsonConfigVersion.cmake.in b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/nlohmann_jsonConfigVersion.cmake.in
new file mode 100644
index 00000000..10910859
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/nlohmann_jsonConfigVersion.cmake.in
@@ -0,0 +1,20 @@
+# This is essentially cmake's BasicConfigVersion-SameMajorVersion.cmake.in but
+# without the 32/64-bit check.  Since json is a header-only library, it doesn't
+# matter if it was built on a different platform than what it is used on (see
+# https://github.com/nlohmann/json/issues/1697).
+set(PACKAGE_VERSION "@PROJECT_VERSION@")
+
+if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
+  set(PACKAGE_VERSION_COMPATIBLE FALSE)
+else()
+
+  if(PACKAGE_FIND_VERSION_MAJOR STREQUAL "@PROJECT_VERSION_MAJOR@")
+    set(PACKAGE_VERSION_COMPATIBLE TRUE)
+  else()
+    set(PACKAGE_VERSION_COMPATIBLE FALSE)
+  endif()
+
+  if(PACKAGE_FIND_VERSION STREQUAL PACKAGE_VERSION)
+      set(PACKAGE_VERSION_EXACT TRUE)
+  endif()
+endif()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/pkg-config.pc.in b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/pkg-config.pc.in
new file mode 100644
index 00000000..21a91a3c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/pkg-config.pc.in
@@ -0,0 +1,7 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+
+Name: @PROJECT_NAME@
+Description: JSON for Modern C++
+Version: @PROJECT_VERSION@
+Cflags: -I${includedir}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-cppcheck.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-cppcheck.txt
new file mode 100644
index 00000000..1881f5d0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-cppcheck.txt
@@ -0,0 +1 @@
+cppcheck==1.4.7
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-cpplint.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-cpplint.txt
new file mode 100644
index 00000000..00318e43
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-cpplint.txt
@@ -0,0 +1 @@
+cpplint==2.0.0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-reuse.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-reuse.txt
new file mode 100644
index 00000000..e7677662
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/requirements/requirements-reuse.txt
@@ -0,0 +1 @@
+reuse==5.0.2
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/scripts/gen_bazel_build_file.cmake b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/scripts/gen_bazel_build_file.cmake
new file mode 100644
index 00000000..e754d387
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/scripts/gen_bazel_build_file.cmake
@@ -0,0 +1,24 @@
+# generate Bazel BUILD file
+
+set(PROJECT_ROOT "${CMAKE_CURRENT_LIST_DIR}/../..")
+set(BUILD_FILE "${PROJECT_ROOT}/BUILD.bazel")
+
+file(GLOB_RECURSE HEADERS LIST_DIRECTORIES false RELATIVE "${PROJECT_ROOT}" "include/*.hpp")
+
+file(WRITE "${BUILD_FILE}" [=[
+cc_library(
+    name = "json",
+    hdrs = [
+]=])
+
+foreach(header ${HEADERS})
+    file(APPEND "${BUILD_FILE}" "        \"${header}\",\n")
+endforeach()
+
+file(APPEND "${BUILD_FILE}" [=[
+    ],
+    includes = ["include"],
+    visibility = ["//visibility:public"],
+    alwayslink = True,
+)
+]=])
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/test.cmake b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/test.cmake
new file mode 100644
index 00000000..7105b97c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/cmake/test.cmake
@@ -0,0 +1,273 @@
+set(_json_test_cmake_list_file ${CMAKE_CURRENT_LIST_FILE})
+
+#############################################################################
+# download test data
+#############################################################################
+
+include(download_test_data)
+
+# test fixture to download test data
+add_test(NAME "download_test_data" COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR}
+    --target download_test_data
+)
+set_tests_properties(download_test_data PROPERTIES FIXTURES_SETUP TEST_DATA)
+
+if(JSON_Valgrind)
+    find_program(CMAKE_MEMORYCHECK_COMMAND valgrind)
+    message(STATUS "Executing test suite with Valgrind (${CMAKE_MEMORYCHECK_COMMAND})")
+    set(memcheck_command "${CMAKE_MEMORYCHECK_COMMAND} ${CMAKE_MEMORYCHECK_COMMAND_OPTIONS} --error-exitcode=1 --leak-check=full")
+    separate_arguments(memcheck_command)
+endif()
+
+#############################################################################
+# detect standard support
+#############################################################################
+
+# C++11 is the minimum required
+set(compiler_supports_cpp_11 TRUE)
+
+foreach(feature ${CMAKE_CXX_COMPILE_FEATURES})
+    if (${feature} STREQUAL cxx_std_14)
+        set(compiler_supports_cpp_14 TRUE)
+    elseif (${feature} STREQUAL cxx_std_17)
+        set(compiler_supports_cpp_17 TRUE)
+    elseif (${feature} STREQUAL cxx_std_20)
+        set(compiler_supports_cpp_20 TRUE)
+    elseif (${feature} STREQUAL cxx_std_23)
+        set(compiler_supports_cpp_23 TRUE)
+    endif()
+endforeach()
+
+#############################################################################
+# test functions
+#############################################################################
+
+#############################################################################
+# json_test_set_test_options(
+#     all|<tests>
+#     [CXX_STANDARDS all|<args>...]
+#     [COMPILE_DEFINITIONS <args>...]
+#     [COMPILE_FEATURES <args>...]
+#     [COMPILE_OPTIONS <args>...]
+#     [LINK_LIBRARIES <args>...]
+#     [LINK_OPTIONS <args>...]
+#     [TEST_PROPERTIES <args>...])
+#
+# Supply test- and standard-specific build settings and/or test properties.
+# Specify multiple tests using a list e.g., "test-foo;test-bar".
+#
+# Must be called BEFORE the test is created.
+#############################################################################
+
+function(json_test_set_test_options tests)
+    cmake_parse_arguments(args "" ""
+        "CXX_STANDARDS;COMPILE_DEFINITIONS;COMPILE_FEATURES;COMPILE_OPTIONS;LINK_LIBRARIES;LINK_OPTIONS;TEST_PROPERTIES"
+        ${ARGN})
+
+    if(NOT args_CXX_STANDARDS)
+        set(args_CXX_STANDARDS "all")
+    endif()
+
+    foreach(test ${tests})
+        if("${test}" STREQUAL "all")
+            set(test "")
+        endif()
+
+        foreach(cxx_standard ${args_CXX_STANDARDS})
+            if("${cxx_standard}" STREQUAL "all")
+                if("${test}" STREQUAL "")
+                    message(FATAL_ERROR "Not supported. Change defaults in: ${_json_test_cmake_list_file}")
+                endif()
+                set(test_interface _json_test_interface_${test})
+            else()
+                set(test_interface _json_test_interface_${test}_cpp_${cxx_standard})
+            endif()
+
+            if(NOT TARGET ${test_interface})
+                add_library(${test_interface} INTERFACE)
+            endif()
+
+            target_compile_definitions(${test_interface} INTERFACE ${args_COMPILE_DEFINITIONS})
+            target_compile_features(${test_interface} INTERFACE ${args_COMPILE_FEATURES})
+            target_compile_options(${test_interface} INTERFACE ${args_COMPILE_OPTIONS})
+            target_link_libraries (${test_interface} INTERFACE ${args_LINK_LIBRARIES})
+            target_link_options(${test_interface} INTERFACE ${args_LINK_OPTIONS})
+            #set_target_properties(${test_interface} PROPERTIES JSON_TEST_PROPERTIES "${args_TEST_PROPERTIES}")
+            set_property(DIRECTORY PROPERTY
+                ${test_interface}_TEST_PROPERTIES "${args_TEST_PROPERTIES}"
+            )
+        endforeach()
+    endforeach()
+endfunction()
+
+# for internal use by _json_test_add_test()
+function(_json_test_apply_test_properties test_target properties_target)
+    #get_target_property(test_properties ${properties_target} JSON_TEST_PROPERTIES)
+    get_property(test_properties DIRECTORY PROPERTY ${properties_target}_TEST_PROPERTIES)
+    if(test_properties)
+        set_tests_properties(${test_target} PROPERTIES ${test_properties})
+    endif()
+endfunction()
+
+# for internal use by json_test_add_test_for()
+function(_json_test_add_test test_name file main cxx_standard)
+    set(test_target ${test_name}_cpp${cxx_standard})
+
+    if(TARGET ${test_target})
+        message(FATAL_ERROR "Target ${test_target} has already been added.")
+    endif()
+
+    add_executable(${test_target} ${file})
+    target_link_libraries(${test_target} PRIVATE ${main})
+
+    # set and require C++ standard
+    set_target_properties(${test_target} PROPERTIES
+        CXX_STANDARD ${cxx_standard}
+        CXX_STANDARD_REQUIRED ON
+    )
+
+    # apply standard-specific build settings
+    if(TARGET _json_test_interface__cpp_${cxx_standard})
+        target_link_libraries(${test_target} PRIVATE _json_test_interface__cpp_${cxx_standard})
+    endif()
+
+    # apply test-specific build settings
+    if(TARGET _json_test_interface_${test_name})
+        target_link_libraries(${test_target} PRIVATE _json_test_interface_${test_name})
+    endif()
+
+    # apply test- and standard-specific build settings
+    if(TARGET _json_test_interface_${test_name}_cpp_${cxx_standard})
+        target_link_libraries(${test_target} PRIVATE
+            _json_test_interface_${test_name}_cpp_${cxx_standard}
+        )
+    endif()
+
+    if (JSON_FastTests)
+        add_test(NAME ${test_target}
+            COMMAND ${test_target} ${DOCTEST_TEST_FILTER}
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        )
+    else()
+        add_test(NAME ${test_target}
+            COMMAND ${test_target} ${DOCTEST_TEST_FILTER} --no-skip
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        )
+    endif()
+    set_tests_properties(${test_target} PROPERTIES LABELS "all" FIXTURES_REQUIRED TEST_DATA)
+
+    # apply standard-specific test properties
+    if(TARGET _json_test_interface__cpp_${cxx_standard})
+        _json_test_apply_test_properties(${test_target} _json_test_interface__cpp_${cxx_standard})
+    endif()
+
+    # apply test-specific test properties
+    if(TARGET _json_test_interface_${test_name})
+        _json_test_apply_test_properties(${test_target} _json_test_interface_${test_name})
+    endif()
+
+    # apply test- and standard-specific test properties
+    if(TARGET _json_test_interface_${test_name}_cpp_${cxx_standard})
+        _json_test_apply_test_properties(${test_target}
+            _json_test_interface_${test_name}_cpp_${cxx_standard}
+        )
+    endif()
+
+    if(JSON_Valgrind)
+        add_test(NAME ${test_target}_valgrind
+            COMMAND ${memcheck_command} $<TARGET_FILE:${test_target}> ${DOCTEST_TEST_FILTER}
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        )
+        set_tests_properties(${test_target}_valgrind PROPERTIES
+            LABELS "valgrind" FIXTURES_REQUIRED TEST_DATA
+        )
+    endif()
+endfunction()
+
+#############################################################################
+# json_test_add_test_for(
+#     <file>
+#     [NAME <name>]
+#     MAIN <main>
+#     [CXX_STANDARDS <version_number>...] [FORCE])
+#
+# Given a <file> unit-foo.cpp, produces
+#
+#     test-foo_cpp<version_number>
+#
+# if C++ standard <version_number> is supported by the compiler and the
+# source file contains JSON_HAS_CPP_<version_number>.
+# Use NAME <name> to override the filename-derived test name.
+# Use FORCE to create the test regardless of the file containing
+# JSON_HAS_CPP_<version_number>.
+# Test targets are linked against <main>.
+# CXX_STANDARDS defaults to "11".
+#############################################################################
+
+function(json_test_add_test_for file)
+    cmake_parse_arguments(args "FORCE" "MAIN;NAME" "CXX_STANDARDS" ${ARGN})
+
+    if("${args_MAIN}" STREQUAL "")
+        message(FATAL_ERROR "Required argument MAIN <main> missing.")
+    endif()
+
+    if("${args_NAME}" STREQUAL "")
+        get_filename_component(file_basename ${file} NAME_WE)
+        string(REGEX REPLACE "unit-([^$]+)" "test-\\1" test_name ${file_basename})
+    else()
+        set(test_name ${args_NAME})
+        if(NOT test_name MATCHES "test-[^$]+")
+            message(FATAL_ERROR "Test name must start with 'test-'.")
+        endif()
+    endif()
+
+    if("${args_CXX_STANDARDS}" STREQUAL "")
+        set(args_CXX_STANDARDS 11)
+    endif()
+
+    file(READ ${file} file_content)
+    foreach(cxx_standard ${args_CXX_STANDARDS})
+        if(NOT compiler_supports_cpp_${cxx_standard})
+            continue()
+        endif()
+
+        # add unconditionally if C++11 (default) or forced
+        if(NOT ("${cxx_standard}" STREQUAL 11 OR args_FORCE))
+            string(FIND "${file_content}" JSON_HAS_CPP_${cxx_standard} has_cpp_found)
+            if(${has_cpp_found} EQUAL -1)
+                continue()
+            endif()
+        endif()
+
+        _json_test_add_test(${test_name} ${file} ${args_MAIN} ${cxx_standard})
+    endforeach()
+endfunction()
+
+#############################################################################
+# json_test_should_build_32bit_test(
+#     <build_32bit_var> <build_32bit_only_var> <input>)
+#
+# Check if the 32bit unit test should be built based on the value of <input>
+# and store the result in the variables <build_32bit_var> and
+# <build_32bit_only_var>.
+#############################################################################
+
+function(json_test_should_build_32bit_test build_32bit_var build_32bit_only_var input)
+    set(${build_32bit_only_var} OFF PARENT_SCOPE)
+    string(TOUPPER "${input}" ${build_32bit_var})
+    if("${${build_32bit_var}}" STREQUAL AUTO)
+        # check if compiler is targeting 32bit by default
+        include(CheckTypeSize)
+        check_type_size("size_t" sizeof_size_t LANGUAGE CXX)
+        if(${sizeof_size_t} AND ${sizeof_size_t} EQUAL 4)
+            message(STATUS "Auto-enabling 32bit unit test.")
+            set(${build_32bit_var} ON)
+        else()
+            set(${build_32bit_var} OFF)
+        endif()
+    elseif("${${build_32bit_var}}" STREQUAL ONLY)
+        set(${build_32bit_only_var} ON PARENT_SCOPE)
+    endif()
+
+    set(${build_32bit_var} "${${build_32bit_var}}" PARENT_SCOPE)
+endfunction()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/Makefile b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/Makefile
new file mode 100644
index 00000000..35c30dae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/Makefile
@@ -0,0 +1,45 @@
+SRCDIR = ../single_include
+
+all: create_output
+
+##########################################################################
+# example files
+##########################################################################
+
+# where are the example cpp files
+EXAMPLES = $(wildcard examples/*.cpp)
+
+cxx_standard = $(lastword c++11 $(filter c++%, $(subst ., ,$1)))
+
+# create output from a stand-alone example file
+%.output: %.cpp
+	@echo "standard $(call cxx_standard $(<:.cpp=))"
+	$(MAKE) $(<:.cpp=) \
+		CPPFLAGS="-I $(SRCDIR) -DJSON_USE_GLOBAL_UDLS=0" \
+		CXXFLAGS="-std=$(call cxx_standard,$(<:.cpp=)) -Wno-deprecated-declarations"
+	./$(<:.cpp=) > $@
+	rm $(<:.cpp=)
+
+# compare created output with current output of the example files
+%.test: %.cpp
+	$(MAKE) $(<:.cpp=) \
+		CPPFLAGS="-I $(SRCDIR) -DJSON_USE_GLOBAL_UDLS=0" \
+		CXXFLAGS="-std=$(call cxx_standard,$(<:.cpp=)) -Wno-deprecated-declarations"
+	./$(<:.cpp=) > $@
+	diff $@ $(<:.cpp=.output)
+	rm $(<:.cpp=) $@
+
+# create output from all stand-alone example files
+create_output: $(EXAMPLES:.cpp=.output)
+
+# check output of all stand-alone example files
+check_output: $(EXAMPLES:.cpp=.test)
+
+# check output of all stand-alone example files (exclude files with platform-dependent output.)
+# This target is used in the CI (ci_test_documentation).
+check_output_portable: $(filter-out examples/meta.test examples/max_size.test examples/std_hash.test examples/basic_json__CompatibleType.test,$(EXAMPLES:.cpp=.test))
+
+clean:
+	rm -fr $(EXAMPLES:.cpp=)
+	$(MAKE) clean -C docset
+	$(MAKE) clean -C mkdocs
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/README.md
new file mode 100644
index 00000000..b39d54e0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/README.md
@@ -0,0 +1,20 @@
+# Documentation
+
+## Generate documentation
+
+Note on documentation: The source files contain links to the online documentation at https://json.nlohmann.me. This URL
+contains the most recent documentation and should also be applicable to previous versions; documentation for deprecated
+functions is not removed, but marked deprecated.
+
+If you want to see the documentation for a specific tag or commit hash, you can generate it as follows (here for tag
+`v3.10.2`):
+
+```shell
+git clone https://github.com/nlohmann/json.git
+cd json
+git checkout v3.10.2
+make install_venv serve -C docs/mkdocs
+```
+
+Open URL <http://127.0.0.1:8000/> in your browser. Replace from any URL from the source code `https://json.nlohmann.me`
+with `http://127.0.0.1:8000` to see the documentation for your tag or commit hash.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/avatars.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/avatars.png
new file mode 100644
index 00000000..25429f34
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/avatars.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/Info.plist b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/Info.plist
new file mode 100644
index 00000000..772ec08a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/Info.plist
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleIdentifier</key>
+	<string>nlohmann_json</string>
+	<key>CFBundleName</key>
+	<string>JSON for Modern C++</string>
+	<key>DocSetPlatformFamily</key>
+	<string>json</string>
+	<key>isDashDocset</key>
+	<true/>
+    <key>dashIndexFilePath</key>
+    <string>index.html</string>
+    <key>DashDocSetFallbackURL</key>
+    <string>https://nlohmann.github.io/json/</string>
+    <key>isJavaScriptEnabled</key>
+    <true/>
+</dict>
+</plist>
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/Makefile b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/Makefile
new file mode 100644
index 00000000..eb1cfd38
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/Makefile
@@ -0,0 +1,87 @@
+SHELL=/usr/bin/env bash
+SED ?= $(shell which gsed 2>/dev/null || which sed)
+
+MKDOCS_PAGES=$(shell cd ../mkdocs/docs/ && find * -type f -name '*.md' | sort)
+
+.PHONY: all
+all: JSON_for_Modern_C++.tgz
+
+docSet.dsidx: docSet.sql
+	# generate index
+	sqlite3 docSet.dsidx <docSet.sql
+
+JSON_for_Modern_C++.docset: Info.plist docSet.dsidx
+	rm -fr JSON_for_Modern_C++.docset JSON_for_Modern_C++.tgz
+	mkdir -p JSON_for_Modern_C++.docset/Contents/Resources/Documents/
+	cp icon*.png JSON_for_Modern_C++.docset
+	cp Info.plist JSON_for_Modern_C++.docset/Contents
+	# build and copy documentation
+	$(MAKE) build -C ../mkdocs
+	cp -r ../mkdocs/site/* JSON_for_Modern_C++.docset/Contents/Resources/Documents
+	# patch CSS to hide navigation items
+	echo -e "\n\nheader, footer, nav.md-tabs, nav.md-tabs--active, div.md-sidebar--primary, a.md-content__button { display: none; }" >> "$$(ls JSON_for_Modern_C++.docset/Contents/Resources/Documents/assets/stylesheets/main.*.min.css)"
+	# fix spacing
+	echo -e "\n\ndiv.md-sidebar div.md-sidebar--secondary, div.md-main__inner { top: 0; margin-top: 0 }" >> "$$(ls JSON_for_Modern_C++.docset/Contents/Resources/Documents/assets/stylesheets/main.*.min.css)"
+	# remove "JSON for Modern C++" from page titles (fallback)
+	find JSON_for_Modern_C++.docset/Contents/Resources/Documents -type f -exec $(SED) -i 's| - JSON for Modern C++</title>|</title>|' {} +
+	# replace page titles with name from index, if available
+	for page in $(MKDOCS_PAGES); do \
+		case "$$page" in \
+			*/index.md) path=$${page/\/index.md/} ;; \
+			*)          path=$${page/.md/}        ;; \
+		esac; \
+		title=$$(sqlite3 docSet.dsidx "SELECT name FROM searchIndex WHERE path='$$path/index.html'" | tr '\n' ',' | $(SED) -e 's/,/, /g' -e 's/, $$/\n/'); \
+		if [ "x$$title" != "x" ]; then \
+			$(SED) -i "s%<title>.*</title>%<title>$$title</title>%" "JSON_for_Modern_C++.docset/Contents/Resources/Documents/$$path/index.html"; \
+		fi \
+	done
+	# clean up
+	rm JSON_for_Modern_C++.docset/Contents/Resources/Documents/sitemap.*
+	# copy index
+	cp docSet.dsidx JSON_for_Modern_C++.docset/Contents/Resources/
+
+JSON_for_Modern_C++.tgz: JSON_for_Modern_C++.docset
+	tar --exclude='.DS_Store' -cvzf JSON_for_Modern_C++.tgz JSON_for_Modern_C++.docset
+
+# install docset for Zeal documentation browser (https://zealdocs.org/)
+.PHONY: install_docset_zeal
+install_docset_zeal: JSON_for_Modern_C++.docset
+	docset_root=$${XDG_DATA_HOME:-$$HOME/.local/share}/Zeal/Zeal/docsets; \
+	rm -rf $$docset_root/JSON_for_Modern_C++.docset; \
+	mkdir -p $$docset_root; \
+	cp -r JSON_for_Modern_C++.docset $$docset_root/
+
+# list mkdocs pages missing from the docset index
+.PHONY: list_missing_pages
+list_missing_pages: docSet.dsidx
+	@for page in $(MKDOCS_PAGES); do \
+		case "$$page" in \
+			*/index.md) path=$${page/\/index.md/} ;; \
+			*)          path=$${page/.md/}        ;; \
+		esac; \
+		if [ "x$$page" != "xindex.md" -a "x$$(sqlite3 docSet.dsidx "SELECT COUNT(*) FROM searchIndex WHERE path='$$path/index.html'")" = "x0" ]; then \
+			echo $$page; \
+		fi \
+	done
+
+# list paths in the docset index without a corresponding mkdocs page
+.PHONY: list_removed_paths
+list_removed_paths: docSet.dsidx
+	@for path in $$(sqlite3 docSet.dsidx "SELECT path FROM searchIndex"); do \
+		page=$${path/\/index.html/.md}; \
+		page_index=$${path/index.html/index.md}; \
+		page_found=0; \
+		for p in $(MKDOCS_PAGES); do \
+			if [ "x$$p" = "x$$page" -o "x$$p" = "x$$page_index" ]; then \
+				page_found=1; \
+			fi \
+		done; \
+		if [ "x$$page_found" = "x0" ]; then \
+			echo $$path; \
+		fi \
+	done
+
+.PHONY: clean
+clean:
+	rm -f docSet.dsidx
+	rm -fr JSON_for_Modern_C++.docset JSON_for_Modern_C++.tgz
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/README.md
new file mode 100644
index 00000000..79a778eb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/README.md
@@ -0,0 +1,19 @@
+# docset
+
+The folder contains the required files to create a [docset](https://kapeli.com/docsets) which can be used in
+documentation browsers like [Dash](https://kapeli.com/dash), [Velocity](https://velocity.silverlakesoftware.com), or
+[Zeal](https://zealdocs.org).
+
+The docset can be created with
+
+```sh
+make nlohmann_json.docset
+```
+
+The generated folder `nlohmann_json.docset` can then be opened in the documentation browser.
+
+A recent version is also part of the [Dash user contributions](https://github.com/Kapeli/Dash-User-Contributions/tree/master/docsets/JSON_for_Modern_C%2B%2B).
+
+## Licenses
+
+The [JSON logo](https://commons.wikimedia.org/wiki/File:JSON_vector_logo.svg) is public domain.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/docSet.sql b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/docSet.sql
new file mode 100644
index 00000000..ea6b4f28
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/docSet.sql
@@ -0,0 +1,234 @@
+DROP TABLE IF EXISTS searchIndex;
+CREATE TABLE searchIndex(id INTEGER PRIMARY KEY, name TEXT, type TEXT, path TEXT);
+CREATE UNIQUE INDEX anchor ON searchIndex (name, type, path);
+
+-- API
+INSERT INTO searchIndex(name, type, path) VALUES ('adl_serializer', 'Class', 'api/adl_serializer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('adl_serializer::from_json', 'Function', 'api/adl_serializer/from_json/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('adl_serializer::to_json', 'Function', 'api/adl_serializer/to_json/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype', 'Class', 'api/byte_container_with_subtype/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::byte_container_with_subtype', 'Constructor', 'api/byte_container_with_subtype/byte_container_with_subtype/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::clear_subtype', 'Method', 'api/byte_container_with_subtype/clear_subtype/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::has_subtype', 'Method', 'api/byte_container_with_subtype/has_subtype/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::set_subtype', 'Method', 'api/byte_container_with_subtype/set_subtype/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('byte_container_with_subtype::subtype', 'Method', 'api/byte_container_with_subtype/subtype/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json', 'Class', 'api/basic_json/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::accept', 'Function', 'api/basic_json/accept/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::array', 'Function', 'api/basic_json/array/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::array_t', 'Type', 'api/basic_json/array_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::at', 'Method', 'api/basic_json/at/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::back', 'Method', 'api/basic_json/back/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::basic_json', 'Constructor', 'api/basic_json/basic_json/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::begin', 'Method', 'api/basic_json/begin/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::binary', 'Function', 'api/basic_json/binary/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::binary_t', 'Type', 'api/basic_json/binary_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::boolean_t', 'Type', 'api/basic_json/boolean_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::cbegin', 'Method', 'api/basic_json/cbegin/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::cbor_tag_handler_t', 'Enum', 'api/basic_json/cbor_tag_handler_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::cend', 'Method', 'api/basic_json/cend/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::clear', 'Method', 'api/basic_json/clear/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::contains', 'Method', 'api/basic_json/contains/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::count', 'Method', 'api/basic_json/count/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::crbegin', 'Method', 'api/basic_json/crbegin/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::crend', 'Method', 'api/basic_json/crend/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::default_object_comparator_t', 'Type', 'api/basic_json/default_object_comparator_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::diff', 'Function', 'api/basic_json/diff/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::dump', 'Method', 'api/basic_json/dump/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::emplace', 'Method', 'api/basic_json/emplace/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::emplace_back', 'Method', 'api/basic_json/emplace_back/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::empty', 'Method', 'api/basic_json/empty/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::end', 'Method', 'api/basic_json/end/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::erase', 'Method', 'api/basic_json/erase/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::error_handler_t', 'Enum', 'api/basic_json/error_handler_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::exception', 'Class', 'api/basic_json/exception/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::find', 'Method', 'api/basic_json/find/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::flatten', 'Method', 'api/basic_json/flatten/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_bjdata', 'Function', 'api/basic_json/from_bjdata/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_bson', 'Function', 'api/basic_json/from_bson/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_cbor', 'Function', 'api/basic_json/from_cbor/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_msgpack', 'Function', 'api/basic_json/from_msgpack/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::from_ubjson', 'Function', 'api/basic_json/from_ubjson/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::front', 'Method', 'api/basic_json/front/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get', 'Method', 'api/basic_json/get/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_allocator', 'Function', 'api/basic_json/get_allocator/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_binary', 'Method', 'api/basic_json/get_binary/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_ptr', 'Method', 'api/basic_json/get_ptr/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_ref', 'Method', 'api/basic_json/get_ref/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::get_to', 'Method', 'api/basic_json/get_to/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::input_format_t', 'Enum', 'api/basic_json/input_format_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::insert', 'Method', 'api/basic_json/insert/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::invalid_iterator', 'Class', 'api/basic_json/invalid_iterator/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_array', 'Method', 'api/basic_json/is_array/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_binary', 'Method', 'api/basic_json/is_binary/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_boolean', 'Method', 'api/basic_json/is_boolean/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_discarded', 'Method', 'api/basic_json/is_discarded/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_null', 'Method', 'api/basic_json/is_null/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_number', 'Method', 'api/basic_json/is_number/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_number_float', 'Method', 'api/basic_json/is_number_float/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_number_integer', 'Method', 'api/basic_json/is_number_integer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_number_unsigned', 'Method', 'api/basic_json/is_number_unsigned/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_object', 'Method', 'api/basic_json/is_object/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_primitive', 'Method', 'api/basic_json/is_primitive/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_string', 'Method', 'api/basic_json/is_string/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::is_structured', 'Method', 'api/basic_json/is_structured/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::items', 'Method', 'api/basic_json/items/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::json_serializer', 'Class', 'api/basic_json/json_serializer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::max_size', 'Method', 'api/basic_json/max_size/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::merge_patch', 'Method', 'api/basic_json/merge_patch/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::meta', 'Function', 'api/basic_json/meta/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::number_float_t', 'Type', 'api/basic_json/number_float_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::number_integer_t', 'Type', 'api/basic_json/number_integer_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::number_unsigned_t', 'Type', 'api/basic_json/number_unsigned_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::object', 'Function', 'api/basic_json/object/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::object_comparator_t', 'Type', 'api/basic_json/object_comparator_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::object_t', 'Type', 'api/basic_json/object_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator ValueType', 'Operator', 'api/basic_json/operator_ValueType/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator value_t', 'Operator', 'api/basic_json/operator_value_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator[]', 'Operator', 'api/basic_json/operator[]/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator=', 'Operator', 'api/basic_json/operator=/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator+=', 'Operator', 'api/basic_json/operator+=/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator==', 'Operator', 'api/basic_json/operator_eq/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator!=', 'Operator', 'api/basic_json/operator_ne/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator<', 'Operator', 'api/basic_json/operator_lt/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator<=', 'Operator', 'api/basic_json/operator_le/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator>', 'Operator', 'api/basic_json/operator_gt/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator>=', 'Operator', 'api/basic_json/operator_ge/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::operator<=>', 'Operator', 'api/basic_json/operator_spaceship/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::out_of_range', 'Class', 'api/basic_json/out_of_range/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::other_error', 'Class', 'api/basic_json/other_error/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::parse', 'Function', 'api/basic_json/parse/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::parse_error', 'Class', 'api/basic_json/parse_error/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::parse_event_t', 'Enum', 'api/basic_json/parse_event_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::parser_callback_t', 'Type', 'api/basic_json/parser_callback_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::patch', 'Method', 'api/basic_json/patch/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::patch_inplace', 'Method', 'api/basic_json/patch_inplace/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::push_back', 'Method', 'api/basic_json/push_back/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::rbegin', 'Method', 'api/basic_json/rbegin/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::rend', 'Method', 'api/basic_json/rend/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::sax_parse', 'Function', 'api/basic_json/sax_parse/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::size', 'Method', 'api/basic_json/size/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::string_t', 'Type', 'api/basic_json/string_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::swap', 'Method', 'api/basic_json/swap/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::type', 'Method', 'api/basic_json/type/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::type_error', 'Class', 'api/basic_json/type_error/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::type_name', 'Method', 'api/basic_json/type_name/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::unflatten', 'Method', 'api/basic_json/unflatten/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::update', 'Method', 'api/basic_json/update/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_bjdata', 'Function', 'api/basic_json/to_bjdata/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_bson', 'Function', 'api/basic_json/to_bson/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_cbor', 'Function', 'api/basic_json/to_cbor/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_msgpack', 'Function', 'api/basic_json/to_msgpack/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_string', 'Method', 'api/basic_json/to_string/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::to_ubjson', 'Function', 'api/basic_json/to_ubjson/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::value', 'Method', 'api/basic_json/value/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::value_t', 'Enum', 'api/basic_json/value_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('basic_json::~basic_json', 'Method', 'api/basic_json/~basic_json/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json', 'Class', 'api/json/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer', 'Class', 'api/json_pointer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::back', 'Method', 'api/json_pointer/back/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::empty', 'Method', 'api/json_pointer/empty/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::json_pointer', 'Constructor', 'api/json_pointer/json_pointer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator==', 'Operator', 'api/json_pointer/operator_eq/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator!=', 'Operator', 'api/json_pointer/operator_ne/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator/', 'Operator', 'api/json_pointer/operator_slash/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator/=', 'Operator', 'api/json_pointer/operator_slasheq/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::operator string_t', 'Operator', 'api/json_pointer/operator_string_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::parent_pointer', 'Method', 'api/json_pointer/parent_pointer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::pop_back', 'Method', 'api/json_pointer/pop_back/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::push_back', 'Method', 'api/json_pointer/push_back/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::string_t', 'Type', 'api/json_pointer/string_t/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_pointer::to_string', 'Method', 'api/json_pointer/to_string/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax', 'Class', 'api/json_sax/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::binary', 'Method', 'api/json_sax/binary/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::boolean', 'Method', 'api/json_sax/boolean/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::end_array', 'Method', 'api/json_sax/end_array/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::end_object', 'Method', 'api/json_sax/end_object/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::key', 'Method', 'api/json_sax/key/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::null', 'Method', 'api/json_sax/null/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::number_float', 'Method', 'api/json_sax/number_float/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::number_integer', 'Method', 'api/json_sax/number_integer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::number_unsigned', 'Method', 'api/json_sax/number_unsigned/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::parse_error', 'Method', 'api/json_sax/parse_error/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::start_array', 'Method', 'api/json_sax/start_array/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::start_object', 'Method', 'api/json_sax/start_object/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('json_sax::string', 'Method', 'api/json_sax/string/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('operator""_json', 'Literal', 'api/operator_literal_json/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('operator""_json_pointer', 'Literal', 'api/operator_literal_json_pointer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('operator<<', 'Operator', 'api/operator_ltlt/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('operator>>', 'Operator', 'api/operator_gtgt/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('ordered_json', 'Class', 'api/ordered_json/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('ordered_map', 'Class', 'api/ordered_map/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('std::hash<basic_json>', 'Class', 'api/basic_json/std_hash/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('std::swap<basic_json>', 'Function', 'api/basic_json/std_swap/index.html');
+
+-- Features
+INSERT INTO searchIndex(name, type, path) VALUES ('Arbitrary Type Conversions', 'Guide', 'features/arbitrary_types/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats', 'Guide', 'features/binary_formats/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: BJData', 'Guide', 'features/binary_formats/bjdata/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: BSON', 'Guide', 'features/binary_formats/bson/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: CBOR', 'Guide', 'features/binary_formats/cbor/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: MessagePack', 'Guide', 'features/binary_formats/messagepack/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Binary Formats: UBJSON', 'Guide', 'features/binary_formats/ubjson/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Binary Values', 'Guide', 'features/binary_values/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Comments', 'Guide', 'features/comments/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Element Access', 'Guide', 'features/element_access/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Element Access: Access with default value: value', 'Guide', 'features/element_access/default_value/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Element Access: Checked access: at', 'Guide', 'features/element_access/checked_access/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Element Access: Unchecked access: operator[]', 'Guide', 'features/element_access/unchecked_access/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Integration: Migration Guide', 'Guide', 'integration/migration_guide/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Integration: CMake', 'Guide', 'integration/cmake/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Integration: Header only', 'Guide', 'integration/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Integration: Package Managers', 'Guide', 'integration/package_managers/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Integration: Pkg-config', 'Guide', 'integration/pkg-config/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Iterators', 'Guide', 'features/iterators/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON Merge Patch', 'Guide', 'features/merge_patch/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON Patch and Diff', 'Guide', 'features/json_patch/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON Pointer', 'Guide', 'features/json_pointer/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('nlohmann Namespace', 'Guide', 'features/namespace/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Types', 'Guide', 'features/types/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Types: Number Handling', 'Guide', 'features/types/number_handling/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Object Order', 'Guide', 'features/object_order/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Parsing', 'Guide', 'features/parsing/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: JSON Lines', 'Guide', 'features/parsing/json_lines/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: Parser Callbacks', 'Guide', 'features/parsing/parser_callbacks/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: Parsing and Exceptions', 'Guide', 'features/parsing/parse_exceptions/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Parsing: SAX Interface', 'Guide', 'features/parsing/sax_interface/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Runtime Assertions', 'Guide', 'features/assertions/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Specializing enum conversion', 'Guide', 'features/enum_conversion/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Supported Macros', 'Guide', 'features/macros/index.html');
+
+-- Macros
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_ASSERT', 'Macro', 'api/macros/json_assert/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_CATCH_USER', 'Macro', 'api/macros/json_throw_user/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DIAGNOSTICS', 'Macro', 'api/macros/json_diagnostics/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DISABLE_ENUM_SERIALIZATION', 'Macro', 'api/macros/json_disable_enum_serialization/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_11', 'Macro', 'api/macros/json_has_cpp_11/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_14', 'Macro', 'api/macros/json_has_cpp_11/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_17', 'Macro', 'api/macros/json_has_cpp_11/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_20', 'Macro', 'api/macros/json_has_cpp_11/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_EXPERIMENTAL_FILESYSTEM', 'Macro', 'api/macros/json_has_filesystem/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_FILESYSTEM', 'Macro', 'api/macros/json_has_filesystem/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_RANGES', 'Macro', 'api/macros/json_has_ranges/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_THREE_WAY_COMPARISON', 'Macro', 'api/macros/json_has_three_way_comparison/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_NOEXCEPTION', 'Macro', 'api/macros/json_noexception/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_NO_IO', 'Macro', 'api/macros/json_no_io/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_SKIP_LIBRARY_VERSION_CHECK', 'Macro', 'api/macros/json_skip_library_version_check/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_SKIP_UNSUPPORTED_COMPILER_CHECK', 'Macro', 'api/macros/json_skip_unsupported_compiler_check/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_THROW_USER', 'Macro', 'api/macros/json_throw_user/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_TRY_USER', 'Macro', 'api/macros/json_throw_user/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_USE_GLOBAL_UDLS', 'Macro', 'api/macros/json_use_global_udls/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_USE_IMPLICIT_CONVERSIONS', 'Macro', 'api/macros/json_use_implicit_conversions/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON', 'Macro', 'api/macros/json_use_legacy_discarded_value_comparison/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('Macros', 'Macro', 'api/macros/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_INTRUSIVE', 'Macro', 'api/macros/nlohmann_define_type_intrusive/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT', 'Macro', 'api/macros/nlohmann_define_type_intrusive/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE', 'Macro', 'api/macros/nlohmann_define_type_non_intrusive/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT', 'Macro', 'api/macros/nlohmann_define_type_non_intrusive/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_NAMESPACE', 'Macro', 'api/macros/nlohmann_json_namespace/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_NAMESPACE_BEGIN', 'Macro', 'api/macros/nlohmann_json_namespace_begin/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_NAMESPACE_END', 'Macro', 'api/macros/nlohmann_json_namespace_begin/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_NAMESPACE_NO_VERSION', 'Macro', 'api/macros/nlohmann_json_namespace_no_version/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_SERIALIZE_ENUM', 'Macro', 'api/macros/nlohmann_json_serialize_enum/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_VERSION_MAJOR', 'Macro', 'api/macros/nlohmann_json_version_major/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_VERSION_MINOR', 'Macro', 'api/macros/nlohmann_json_version_major/index.html');
+INSERT INTO searchIndex(name, type, path) VALUES ('NLOHMANN_JSON_VERSION_PATCH', 'Macro', 'api/macros/nlohmann_json_version_major/index.html');
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/docset.json b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/docset.json
new file mode 100644
index 00000000..bc08d283
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/docset.json
@@ -0,0 +1,10 @@
+{
+  "name": "JSON for Modern C++",
+  "version": "3.11.3",
+  "archive": "JSON_for_Modern_C++.tgz",
+  "author": {
+    "name": "Niels Lohmann",
+    "link": "https://twitter.com/nlohmann"
+  },
+  "aliases": ["nlohmann/json"]
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/icon.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/icon.png
new file mode 100644
index 00000000..7197d0a7
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/icon.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/icon@2x.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/icon@2x.png
new file mode 100644
index 00000000..5f2fac87
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/docset/icon@2x.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/README.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/README.cpp
new file mode 100644
index 00000000..2d641e58
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/README.cpp
@@ -0,0 +1,39 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json j =
+    {
+        {"pi", 3.141},
+        {"happy", true},
+        {"name", "Niels"},
+        {"nothing", nullptr},
+        {
+            "answer", {
+                {"everything", 42}
+            }
+        },
+        {"list", {1, 0, 2}},
+        {
+            "object", {
+                {"currency", "USD"},
+                {"value", 42.99}
+            }
+        }
+    };
+
+    // add new values
+    j["new"]["key"]["value"] = {"another", "list"};
+
+    // count elements
+    auto s = j.size();
+    j["size"] = s;
+
+    // pretty print with indent of 4 spaces
+    std::cout << std::setw(4) << j << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/README.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/README.output
new file mode 100644
index 00000000..31188d45
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/README.output
@@ -0,0 +1,27 @@
+{
+    "answer": {
+        "everything": 42
+    },
+    "happy": true,
+    "list": [
+        1,
+        0,
+        2
+    ],
+    "name": "Niels",
+    "new": {
+        "key": {
+            "value": [
+                "another",
+                "list"
+            ]
+        }
+    },
+    "nothing": null,
+    "object": {
+        "currency": "USD",
+        "value": 42.99
+    },
+    "pi": 3.141,
+    "size": 8
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/accept__string.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/accept__string.cpp
new file mode 100644
index 00000000..8eb3d9b7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/accept__string.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // a valid JSON text
+    auto valid_text = R"(
+    {
+        "numbers": [1, 2, 3]
+    }
+    )";
+
+    // an invalid JSON text
+    auto invalid_text = R"(
+    {
+        "strings": ["extra", "comma", ]
+    }
+    )";
+
+    std::cout << std::boolalpha
+              << json::accept(valid_text) << ' '
+              << json::accept(invalid_text) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/accept__string.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/accept__string.output
new file mode 100644
index 00000000..836a5934
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/accept__string.output
@@ -0,0 +1 @@
+true false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array.cpp
new file mode 100644
index 00000000..139b5ef1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON arrays
+    json j_no_init_list = json::array();
+    json j_empty_init_list = json::array({});
+    json j_nonempty_init_list = json::array({1, 2, 3, 4});
+    json j_list_of_pairs = json::array({ {"one", 1}, {"two", 2} });
+
+    // serialize the JSON arrays
+    std::cout << j_no_init_list << '\n';
+    std::cout << j_empty_init_list << '\n';
+    std::cout << j_nonempty_init_list << '\n';
+    std::cout << j_list_of_pairs << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array.output
new file mode 100644
index 00000000..4e75a1b6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array.output
@@ -0,0 +1,4 @@
+[]
+[]
+[1,2,3,4]
+[["one",1],["two",2]]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array_t.cpp
new file mode 100644
index 00000000..0964857b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array_t.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha << std::is_same<std::vector<json>, json::array_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array_t.output
new file mode 100644
index 00000000..27ba77dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/array_t.output
@@ -0,0 +1 @@
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer.cpp
new file mode 100644
index 00000000..15e91433
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer.cpp
@@ -0,0 +1,103 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    json j =
+    {
+        {"number", 1}, {"string", "foo"}, {"array", {1, 2}}
+    };
+
+    // read-only access
+
+    // output element with JSON pointer "/number"
+    std::cout << j.at("/number"_json_pointer) << '\n';
+    // output element with JSON pointer "/string"
+    std::cout << j.at("/string"_json_pointer) << '\n';
+    // output element with JSON pointer "/array"
+    std::cout << j.at("/array"_json_pointer) << '\n';
+    // output element with JSON pointer "/array/1"
+    std::cout << j.at("/array/1"_json_pointer) << '\n';
+
+    // writing access
+
+    // change the string
+    j.at("/string"_json_pointer) = "bar";
+    // output the changed string
+    std::cout << j["string"] << '\n';
+
+    // change an array element
+    j.at("/array/1"_json_pointer) = 21;
+    // output the changed array
+    std::cout << j["array"] << '\n';
+
+    // out_of_range.106
+    try
+    {
+        // try to use an array index with leading '0'
+        json::reference ref = j.at("/array/01"_json_pointer);
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.109
+    try
+    {
+        // try to use an array index that is not a number
+        json::reference ref = j.at("/array/one"_json_pointer);
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.401
+    try
+    {
+        // try to use an invalid array index
+        json::reference ref = j.at("/array/4"_json_pointer);
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.402
+    try
+    {
+        // try to use the array index '-'
+        json::reference ref = j.at("/array/-"_json_pointer);
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.403
+    try
+    {
+        // try to use a JSON pointer to a nonexistent object key
+        json::const_reference ref = j.at("/foo"_json_pointer);
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.404
+    try
+    {
+        // try to use a JSON pointer that cannot be resolved
+        json::reference ref = j.at("/number/foo"_json_pointer);
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer.output
new file mode 100644
index 00000000..1d29893e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer.output
@@ -0,0 +1,12 @@
+1
+"foo"
+[1,2]
+2
+"bar"
+[1,21]
+[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'
+[json.exception.parse_error.109] parse error: array index 'one' is not a number
+[json.exception.out_of_range.401] array index 4 is out of range
+[json.exception.out_of_range.402] array index '-' (2) is out of range
+[json.exception.out_of_range.403] key 'foo' not found
+[json.exception.out_of_range.404] unresolved reference token 'foo'
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer_const.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer_const.cpp
new file mode 100644
index 00000000..ab026e07
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer_const.cpp
@@ -0,0 +1,80 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    const json j =
+    {
+        {"number", 1}, {"string", "foo"}, {"array", {1, 2}}
+    };
+
+    // read-only access
+
+    // output element with JSON pointer "/number"
+    std::cout << j.at("/number"_json_pointer) << '\n';
+    // output element with JSON pointer "/string"
+    std::cout << j.at("/string"_json_pointer) << '\n';
+    // output element with JSON pointer "/array"
+    std::cout << j.at("/array"_json_pointer) << '\n';
+    // output element with JSON pointer "/array/1"
+    std::cout << j.at("/array/1"_json_pointer) << '\n';
+
+    // out_of_range.109
+    try
+    {
+        // try to use an array index that is not a number
+        json::const_reference ref = j.at("/array/one"_json_pointer);
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.401
+    try
+    {
+        // try to use an invalid array index
+        json::const_reference ref = j.at("/array/4"_json_pointer);
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.402
+    try
+    {
+        // try to use the array index '-'
+        json::const_reference ref = j.at("/array/-"_json_pointer);
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.403
+    try
+    {
+        // try to use a JSON pointer to a nonexistent object key
+        json::const_reference ref = j.at("/foo"_json_pointer);
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // out_of_range.404
+    try
+    {
+        // try to use a JSON pointer that cannot be resolved
+        json::const_reference ref = j.at("/number/foo"_json_pointer);
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer_const.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer_const.output
new file mode 100644
index 00000000..aaf8f187
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__json_pointer_const.output
@@ -0,0 +1,9 @@
+1
+"foo"
+[1,2]
+2
+[json.exception.parse_error.109] parse error: array index 'one' is not a number
+[json.exception.out_of_range.401] array index 4 is out of range
+[json.exception.out_of_range.402] array index '-' (2) is out of range
+[json.exception.out_of_range.403] key 'foo' not found
+[json.exception.out_of_range.404] unresolved reference token 'foo'
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype.c++17.cpp
new file mode 100644
index 00000000..032506ac
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype.c++17.cpp
@@ -0,0 +1,49 @@
+#include <iostream>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON object
+    json object =
+    {
+        {"the good", "il buono"},
+        {"the bad", "il cattivo"},
+        {"the ugly", "il brutto"}
+    };
+
+    // output element with key "the ugly" using string_view
+    std::cout << object.at("the ugly"sv) << '\n';
+
+    // change element with key "the bad" using string_view
+    object.at("the bad"sv) = "il cattivo";
+
+    // output changed array
+    std::cout << object << '\n';
+
+    // exception type_error.304
+    try
+    {
+        // use at() with string_view on a non-object type
+        json str = "I am a string";
+        str.at("the good"sv) = "Another string";
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // exception out_of_range.401
+    try
+    {
+        // try to write at a nonexisting key using string_view
+        object.at("the fast"sv) = "il rapido";
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype.c++17.output
new file mode 100644
index 00000000..b544b729
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype.c++17.output
@@ -0,0 +1,4 @@
+"il brutto"
+{"the bad":"il cattivo","the good":"il buono","the ugly":"il brutto"}
+[json.exception.type_error.304] cannot use at() with string
+[json.exception.out_of_range.403] key 'the fast' not found
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype_const.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype_const.c++17.cpp
new file mode 100644
index 00000000..712d456e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype_const.c++17.cpp
@@ -0,0 +1,43 @@
+#include <iostream>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON object
+    const json object =
+    {
+        {"the good", "il buono"},
+        {"the bad", "il cattivo"},
+        {"the ugly", "il brutto"}
+    };
+
+    // output element with key "the ugly" using string_view
+    std::cout << object.at("the ugly"sv) << '\n';
+
+    // exception type_error.304
+    try
+    {
+        // use at() with string_view on a non-object type
+        const json str = "I am a string";
+        std::cout << str.at("the good"sv) << '\n';
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // exception out_of_range.401
+    try
+    {
+        // try to read from a nonexisting key using string_view
+        std::cout << object.at("the fast"sv) << '\n';
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << "out of range" << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype_const.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype_const.c++17.output
new file mode 100644
index 00000000..40ca3f09
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__keytype_const.c++17.output
@@ -0,0 +1,3 @@
+"il brutto"
+[json.exception.type_error.304] cannot use at() with string
+out of range
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type.cpp
new file mode 100644
index 00000000..e1f33cec
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type.cpp
@@ -0,0 +1,47 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON object
+    json object =
+    {
+        {"the good", "il buono"},
+        {"the bad", "il cattivo"},
+        {"the ugly", "il brutto"}
+    };
+
+    // output element with key "the ugly"
+    std::cout << object.at("the ugly") << '\n';
+
+    // change element with key "the bad"
+    object.at("the bad") = "il cattivo";
+
+    // output changed array
+    std::cout << object << '\n';
+
+    // exception type_error.304
+    try
+    {
+        // use at() on a non-object type
+        json str = "I am a string";
+        str.at("the good") = "Another string";
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // exception out_of_range.401
+    try
+    {
+        // try to write at a nonexisting key
+        object.at("the fast") = "il rapido";
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type.output
new file mode 100644
index 00000000..b544b729
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type.output
@@ -0,0 +1,4 @@
+"il brutto"
+{"the bad":"il cattivo","the good":"il buono","the ugly":"il brutto"}
+[json.exception.type_error.304] cannot use at() with string
+[json.exception.out_of_range.403] key 'the fast' not found
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type_const.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type_const.cpp
new file mode 100644
index 00000000..b37bbd48
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type_const.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON object
+    const json object =
+    {
+        {"the good", "il buono"},
+        {"the bad", "il cattivo"},
+        {"the ugly", "il brutto"}
+    };
+
+    // output element with key "the ugly"
+    std::cout << object.at("the ugly") << '\n';
+
+    // exception type_error.304
+    try
+    {
+        // use at() on a non-object type
+        const json str = "I am a string";
+        std::cout << str.at("the good") << '\n';
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // exception out_of_range.401
+    try
+    {
+        // try to read from a nonexisting key
+        std::cout << object.at("the fast") << '\n';
+    }
+    catch (const json::out_of_range)
+    {
+        std::cout << "out of range" << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type_const.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type_const.output
new file mode 100644
index 00000000..40ca3f09
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__object_t_key_type_const.output
@@ -0,0 +1,3 @@
+"il brutto"
+[json.exception.type_error.304] cannot use at() with string
+out of range
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type.cpp
new file mode 100644
index 00000000..6527c6b1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type.cpp
@@ -0,0 +1,42 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON array
+    json array = {"first", "2nd", "third", "fourth"};
+
+    // output element at index 2 (third element)
+    std::cout << array.at(2) << '\n';
+
+    // change element at index 1 (second element) to "second"
+    array.at(1) = "second";
+
+    // output changed array
+    std::cout << array << '\n';
+
+    // exception type_error.304
+    try
+    {
+        // use at() on a non-array type
+        json str = "I am a string";
+        str.at(0) = "Another string";
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // exception out_of_range.401
+    try
+    {
+        // try to write beyond the array limit
+        array.at(5) = "sixth";
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type.output
new file mode 100644
index 00000000..54026436
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type.output
@@ -0,0 +1,4 @@
+"third"
+["first","second","third","fourth"]
+[json.exception.type_error.304] cannot use at() with string
+[json.exception.out_of_range.401] array index 5 is out of range
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type_const.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type_const.cpp
new file mode 100644
index 00000000..2080387a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type_const.cpp
@@ -0,0 +1,36 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON array
+    const json array = {"first", "2nd", "third", "fourth"};
+
+    // output element at index 2 (third element)
+    std::cout << array.at(2) << '\n';
+
+    // exception type_error.304
+    try
+    {
+        // use at() on a non-array type
+        const json str = "I am a string";
+        std::cout << str.at(0) << '\n';
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // exception out_of_range.401
+    try
+    {
+        // try to read beyond the array limit
+        std::cout << array.at(5) << '\n';
+    }
+    catch (const json::out_of_range& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type_const.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type_const.output
new file mode 100644
index 00000000..8135a27a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/at__size_type_const.output
@@ -0,0 +1,3 @@
+"third"
+[json.exception.type_error.304] cannot use at() with string
+[json.exception.out_of_range.401] array index 5 is out of range
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/back.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/back.cpp
new file mode 100644
index 00000000..45342db1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/back.cpp
@@ -0,0 +1,38 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_object_empty(json::value_t::object);
+    json j_array = {1, 2, 4, 8, 16};
+    json j_array_empty(json::value_t::array);
+    json j_string = "Hello, world";
+
+    // call back()
+    std::cout << j_boolean.back() << '\n';
+    std::cout << j_number_integer.back() << '\n';
+    std::cout << j_number_float.back() << '\n';
+    std::cout << j_object.back() << '\n';
+    //std::cout << j_object_empty.back() << '\n';  // undefined behavior
+    std::cout << j_array.back() << '\n';
+    //std::cout << j_array_empty.back() << '\n';   // undefined behavior
+    std::cout << j_string.back() << '\n';
+
+    // back() called on a null value
+    try
+    {
+        json j_null;
+        j_null.back();
+    }
+    catch (const json::invalid_iterator& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/back.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/back.output
new file mode 100644
index 00000000..2990dbf0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/back.output
@@ -0,0 +1,7 @@
+true
+17
+23.42
+2
+16
+"Hello, world"
+[json.exception.invalid_iterator.214] cannot get value
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__CompatibleType.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__CompatibleType.cpp
new file mode 100644
index 00000000..f0d0cc1e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__CompatibleType.cpp
@@ -0,0 +1,214 @@
+#include <iostream>
+#include <deque>
+#include <list>
+#include <forward_list>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <valarray>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // ============
+    // object types
+    // ============
+
+    // create an object from an object_t value
+    json::object_t object_value = { {"one", 1}, {"two", 2} };
+    json j_object_t(object_value);
+
+    // create an object from std::map
+    std::map<std::string, int> c_map
+    {
+        {"one", 1}, {"two", 2}, {"three", 3}
+    };
+    json j_map(c_map);
+
+    // create an object from std::unordered_map
+    std::unordered_map<const char*, double> c_umap
+    {
+        {"one", 1.2}, {"two", 2.3}, {"three", 3.4}
+    };
+    json j_umap(c_umap);
+
+    // create an object from std::multimap
+    std::multimap<std::string, bool> c_mmap
+    {
+        {"one", true}, {"two", true}, {"three", false}, {"three", true}
+    };
+    json j_mmap(c_mmap); // only one entry for key "three" is used
+
+    // create an object from std::unordered_multimap
+    std::unordered_multimap<std::string, bool> c_ummap
+    {
+        {"one", true}, {"two", true}, {"three", false}, {"three", true}
+    };
+    json j_ummap(c_ummap); // only one entry for key "three" is used
+
+    // serialize the JSON objects
+    std::cout << j_object_t << '\n';
+    std::cout << j_map << '\n';
+    std::cout << j_umap << '\n';
+    std::cout << j_mmap << '\n';
+    std::cout << j_ummap << "\n\n";
+
+    // ===========
+    // array types
+    // ===========
+
+    // create an array from an array_t value
+    json::array_t array_value = {"one", "two", 3, 4.5, false};
+    json j_array_t(array_value);
+
+    // create an array from std::vector
+    std::vector<int> c_vector {1, 2, 3, 4};
+    json j_vec(c_vector);
+
+    // create an array from std::valarray
+    std::valarray<short> c_valarray {10, 9, 8, 7};
+    json j_valarray(c_valarray);
+
+    // create an array from std::deque
+    std::deque<double> c_deque {1.2, 2.3, 3.4, 5.6};
+    json j_deque(c_deque);
+
+    // create an array from std::list
+    std::list<bool> c_list {true, true, false, true};
+    json j_list(c_list);
+
+    // create an array from std::forward_list
+    std::forward_list<std::int64_t> c_flist {12345678909876, 23456789098765, 34567890987654, 45678909876543};
+    json j_flist(c_flist);
+
+    // create an array from std::array
+    std::array<unsigned long, 4> c_array {{1, 2, 3, 4}};
+    json j_array(c_array);
+
+    // create an array from std::set
+    std::set<std::string> c_set {"one", "two", "three", "four", "one"};
+    json j_set(c_set); // only one entry for "one" is used
+
+    // create an array from std::unordered_set
+    std::unordered_set<std::string> c_uset {"one", "two", "three", "four", "one"};
+    json j_uset(c_uset); // only one entry for "one" is used
+
+    // create an array from std::multiset
+    std::multiset<std::string> c_mset {"one", "two", "one", "four"};
+    json j_mset(c_mset); // both entries for "one" are used
+
+    // create an array from std::unordered_multiset
+    std::unordered_multiset<std::string> c_umset {"one", "two", "one", "four"};
+    json j_umset(c_umset); // both entries for "one" are used
+
+    // serialize the JSON arrays
+    std::cout << j_array_t << '\n';
+    std::cout << j_vec << '\n';
+    std::cout << j_valarray << '\n';
+    std::cout << j_deque << '\n';
+    std::cout << j_list << '\n';
+    std::cout << j_flist << '\n';
+    std::cout << j_array << '\n';
+    std::cout << j_set << '\n';
+    std::cout << j_uset << '\n';
+    std::cout << j_mset << '\n';
+    std::cout << j_umset << "\n\n";
+
+    // ============
+    // string types
+    // ============
+
+    // create string from a string_t value
+    json::string_t string_value = "The quick brown fox jumps over the lazy dog.";
+    json j_string_t(string_value);
+
+    // create a JSON string directly from a string literal
+    json j_string_literal("The quick brown fox jumps over the lazy dog.");
+
+    // create string from std::string
+    std::string s_stdstring = "The quick brown fox jumps over the lazy dog.";
+    json j_stdstring(s_stdstring);
+
+    // serialize the JSON strings
+    std::cout << j_string_t << '\n';
+    std::cout << j_string_literal << '\n';
+    std::cout << j_stdstring << "\n\n";
+
+    // ============
+    // number types
+    // ============
+
+    // create a JSON number from number_integer_t
+    json::number_integer_t value_integer_t = -42;
+    json j_integer_t(value_integer_t);
+
+    // create a JSON number from number_unsigned_t
+    json::number_integer_t value_unsigned_t = 17;
+    json j_unsigned_t(value_unsigned_t);
+
+    // create a JSON number from an anonymous enum
+    enum { enum_value = 17 };
+    json j_enum(enum_value);
+
+    // create values of different integer types
+    short n_short = 42;
+    int n_int = -23;
+    long n_long = 1024;
+    int_least32_t n_int_least32_t = -17;
+    uint8_t n_uint8_t = 8;
+
+    // create (integer) JSON numbers
+    json j_short(n_short);
+    json j_int(n_int);
+    json j_long(n_long);
+    json j_int_least32_t(n_int_least32_t);
+    json j_uint8_t(n_uint8_t);
+
+    // create values of different floating-point types
+    json::number_float_t v_ok = 3.141592653589793;
+    json::number_float_t v_nan = NAN;
+    json::number_float_t v_infinity = INFINITY;
+
+    // create values of different floating-point types
+    float n_float = 42.23;
+    float n_float_nan = 1.0f / 0.0f;
+    double n_double = 23.42;
+
+    // create (floating point) JSON numbers
+    json j_ok(v_ok);
+    json j_nan(v_nan);
+    json j_infinity(v_infinity);
+    json j_float(n_float);
+    json j_float_nan(n_float_nan);
+    json j_double(n_double);
+
+    // serialize the JSON numbers
+    std::cout << j_integer_t << '\n';
+    std::cout << j_unsigned_t << '\n';
+    std::cout << j_enum << '\n';
+    std::cout << j_short << '\n';
+    std::cout << j_int << '\n';
+    std::cout << j_long << '\n';
+    std::cout << j_int_least32_t << '\n';
+    std::cout << j_uint8_t << '\n';
+    std::cout << j_ok << '\n';
+    std::cout << j_nan << '\n';
+    std::cout << j_infinity << '\n';
+    std::cout << j_float << '\n';
+    std::cout << j_float_nan << '\n';
+    std::cout << j_double << "\n\n";
+
+    // =============
+    // boolean types
+    // =============
+
+    // create boolean values
+    json j_truth = true;
+    json j_falsity = false;
+
+    // serialize the JSON booleans
+    std::cout << j_truth << '\n';
+    std::cout << j_falsity << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__CompatibleType.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__CompatibleType.output
new file mode 100644
index 00000000..2337e81f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__CompatibleType.output
@@ -0,0 +1,39 @@
+{"one":1,"two":2}
+{"one":1,"three":3,"two":2}
+{"one":1.2,"three":3.4,"two":2.3}
+{"one":true,"three":false,"two":true}
+{"one":true,"three":false,"two":true}
+
+["one","two",3,4.5,false]
+[1,2,3,4]
+[10,9,8,7]
+[1.2,2.3,3.4,5.6]
+[true,true,false,true]
+[12345678909876,23456789098765,34567890987654,45678909876543]
+[1,2,3,4]
+["four","one","three","two"]
+["four","three","two","one"]
+["four","one","one","two"]
+["four","two","one","one"]
+
+"The quick brown fox jumps over the lazy dog."
+"The quick brown fox jumps over the lazy dog."
+"The quick brown fox jumps over the lazy dog."
+
+-42
+17
+17
+42
+-23
+1024
+-17
+8
+3.141592653589793
+null
+null
+42.22999954223633
+null
+23.42
+
+true
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__InputIt_InputIt.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__InputIt_InputIt.cpp
new file mode 100644
index 00000000..dec693c8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__InputIt_InputIt.cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_array = {"alpha", "bravo", "charly", "delta", "easy"};
+    json j_number = 42;
+    json j_object = {{"one", "eins"}, {"two", "zwei"}};
+
+    // create copies using iterators
+    json j_array_range(j_array.begin() + 1, j_array.end() - 2);
+    json j_number_range(j_number.begin(), j_number.end());
+    json j_object_range(j_object.begin(), j_object.find("two"));
+
+    // serialize the values
+    std::cout << j_array_range << '\n';
+    std::cout << j_number_range << '\n';
+    std::cout << j_object_range << '\n';
+
+    // example for an exception
+    try
+    {
+        json j_invalid(j_number.begin() + 1, j_number.end());
+    }
+    catch (const json::invalid_iterator& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__InputIt_InputIt.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__InputIt_InputIt.output
new file mode 100644
index 00000000..bfb01778
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__InputIt_InputIt.output
@@ -0,0 +1,4 @@
+["bravo","charly"]
+42
+{"one":"eins"}
+[json.exception.invalid_iterator.204] iterators out of range
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__basic_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__basic_json.cpp
new file mode 100644
index 00000000..17136f43
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__basic_json.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON array
+    json j1 = {"one", "two", 3, 4.5, false};
+
+    // create a copy
+    json j2(j1);
+
+    // serialize the JSON array
+    std::cout << j1 << " = " << j2 << '\n';
+    std::cout << std::boolalpha << (j1 == j2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__basic_json.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__basic_json.output
new file mode 100644
index 00000000..ee93a41c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__basic_json.output
@@ -0,0 +1,2 @@
+["one","two",3,4.5,false] = ["one","two",3,4.5,false]
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__copyassignment.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__copyassignment.cpp
new file mode 100644
index 00000000..2d865740
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__copyassignment.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json a = 23;
+    json b = 42;
+
+    // copy-assign a to b
+    b = a;
+
+    // serialize the JSON arrays
+    std::cout << a << '\n';
+    std::cout << b << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__copyassignment.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__copyassignment.output
new file mode 100644
index 00000000..c1eee210
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__copyassignment.output
@@ -0,0 +1,2 @@
+23
+23
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__list_init_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__list_init_t.cpp
new file mode 100644
index 00000000..78611e1a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__list_init_t.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_empty_init_list = json({});
+    json j_object = { {"one", 1}, {"two", 2} };
+    json j_array = {1, 2, 3, 4};
+    json j_nested_object = { {"one", {1}}, {"two", {1, 2}} };
+    json j_nested_array = { {{1}, "one"}, {{1, 2}, "two"} };
+
+    // serialize the JSON value
+    std::cout << j_empty_init_list << '\n';
+    std::cout << j_object << '\n';
+    std::cout << j_array << '\n';
+    std::cout << j_nested_object << '\n';
+    std::cout << j_nested_array << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__list_init_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__list_init_t.output
new file mode 100644
index 00000000..d38f5b84
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__list_init_t.output
@@ -0,0 +1,5 @@
+{}
+{"one":1,"two":2}
+[1,2,3,4]
+{"one":[1],"two":[1,2]}
+[[[1],"one"],[[1,2],"two"]]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__moveconstructor.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__moveconstructor.cpp
new file mode 100644
index 00000000..48b68f61
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__moveconstructor.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON value
+    json a = 23;
+
+    // move contents of a to b
+    json b(std::move(a));
+
+    // serialize the JSON arrays
+    std::cout << a << '\n';
+    std::cout << b << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__moveconstructor.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__moveconstructor.output
new file mode 100644
index 00000000..911b5b1a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__moveconstructor.output
@@ -0,0 +1,2 @@
+null
+23
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__nullptr_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__nullptr_t.cpp
new file mode 100644
index 00000000..7a436665
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__nullptr_t.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // implicitly create a JSON null value
+    json j1;
+
+    // explicitly create a JSON null value
+    json j2(nullptr);
+
+    // serialize the JSON null value
+    std::cout << j1 << '\n' << j2 << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__nullptr_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__nullptr_t.output
new file mode 100644
index 00000000..c1e4b6c1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__nullptr_t.output
@@ -0,0 +1,2 @@
+null
+null
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__size_type_basic_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__size_type_basic_json.cpp
new file mode 100644
index 00000000..9ec76772
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__size_type_basic_json.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array by creating copies of a JSON value
+    json value = "Hello";
+    json array_0 = json(0, value);
+    json array_1 = json(1, value);
+    json array_5 = json(5, value);
+
+    // serialize the JSON arrays
+    std::cout << array_0 << '\n';
+    std::cout << array_1 << '\n';
+    std::cout << array_5 << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__size_type_basic_json.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__size_type_basic_json.output
new file mode 100644
index 00000000..f4c59b34
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__size_type_basic_json.output
@@ -0,0 +1,3 @@
+[]
+["Hello"]
+["Hello","Hello","Hello","Hello","Hello"]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__value_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__value_t.cpp
new file mode 100644
index 00000000..c306731a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__value_t.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create the different JSON values with default values
+    json j_null(json::value_t::null);
+    json j_boolean(json::value_t::boolean);
+    json j_number_integer(json::value_t::number_integer);
+    json j_number_float(json::value_t::number_float);
+    json j_object(json::value_t::object);
+    json j_array(json::value_t::array);
+    json j_string(json::value_t::string);
+
+    // serialize the JSON values
+    std::cout << j_null << '\n';
+    std::cout << j_boolean << '\n';
+    std::cout << j_number_integer << '\n';
+    std::cout << j_number_float << '\n';
+    std::cout << j_object << '\n';
+    std::cout << j_array << '\n';
+    std::cout << j_string << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__value_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__value_t.output
new file mode 100644
index 00000000..ea542cae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/basic_json__value_t.output
@@ -0,0 +1,7 @@
+null
+false
+0
+0.0
+{}
+[]
+""
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/begin.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/begin.cpp
new file mode 100644
index 00000000..654835b0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/begin.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to the first element
+    json::iterator it = array.begin();
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/begin.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/begin.output
new file mode 100644
index 00000000..d00491fd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/begin.output
@@ -0,0 +1 @@
+1
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary.cpp
new file mode 100644
index 00000000..617ce609
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a binary vector
+    std::vector<std::uint8_t> vec = {0xCA, 0xFE, 0xBA, 0xBE};
+
+    // create a binary JSON value with subtype 42
+    json j = json::binary(vec, 42);
+
+    // output type and subtype
+    std::cout << "type: " << j.type_name() << ", subtype: " << j.get_binary().subtype() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary.output
new file mode 100644
index 00000000..74b05d23
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary.output
@@ -0,0 +1 @@
+type: binary, subtype: 42
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary_t.cpp
new file mode 100644
index 00000000..bfaee5ca
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary_t.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha << std::is_same<nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>, json::binary_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary_t.output
new file mode 100644
index 00000000..27ba77dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/binary_t.output
@@ -0,0 +1 @@
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/boolean_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/boolean_t.cpp
new file mode 100644
index 00000000..75b8c99f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/boolean_t.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha << std::is_same<bool, json::boolean_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/boolean_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/boolean_t.output
new file mode 100644
index 00000000..27ba77dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/boolean_t.output
@@ -0,0 +1 @@
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__byte_container_with_subtype.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__byte_container_with_subtype.cpp
new file mode 100644
index 00000000..1c10be5c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__byte_container_with_subtype.cpp
@@ -0,0 +1,23 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+// define a byte container based on std::vector
+using byte_container_with_subtype = nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>;
+
+using json = nlohmann::json;
+
+int main()
+{
+    // (1) create empty container
+    auto c1 = byte_container_with_subtype();
+
+    std::vector<std::uint8_t> bytes = {{0xca, 0xfe, 0xba, 0xbe}};
+
+    // (2) create container
+    auto c2 = byte_container_with_subtype(bytes);
+
+    // (3) create container with subtype
+    auto c3 = byte_container_with_subtype(bytes, 42);
+
+    std::cout << json(c1) << "\n" << json(c2) << "\n" << json(c3) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__byte_container_with_subtype.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__byte_container_with_subtype.output
new file mode 100644
index 00000000..67ac1b2e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__byte_container_with_subtype.output
@@ -0,0 +1,3 @@
+{"bytes":[],"subtype":null}
+{"bytes":[202,254,186,190],"subtype":null}
+{"bytes":[202,254,186,190],"subtype":42}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__clear_subtype.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__clear_subtype.cpp
new file mode 100644
index 00000000..f9ce6842
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__clear_subtype.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+// define a byte container based on std::vector
+using byte_container_with_subtype = nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>;
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::vector<std::uint8_t> bytes = {{0xca, 0xfe, 0xba, 0xbe}};
+
+    // create container with subtype
+    auto c1 = byte_container_with_subtype(bytes, 42);
+
+    std::cout << "before calling clear_subtype(): " << json(c1) << '\n';
+
+    c1.clear_subtype();
+
+    std::cout << "after calling clear_subtype(): " << json(c1) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__clear_subtype.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__clear_subtype.output
new file mode 100644
index 00000000..9d821294
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__clear_subtype.output
@@ -0,0 +1,2 @@
+before calling clear_subtype(): {"bytes":[202,254,186,190],"subtype":42}
+after calling clear_subtype(): {"bytes":[202,254,186,190],"subtype":null}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__has_subtype.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__has_subtype.cpp
new file mode 100644
index 00000000..61c21eaa
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__has_subtype.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+// define a byte container based on std::vector
+using byte_container_with_subtype = nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>;
+
+int main()
+{
+    std::vector<std::uint8_t> bytes = {{0xca, 0xfe, 0xba, 0xbe}};
+
+    // create container
+    auto c1 = byte_container_with_subtype(bytes);
+
+    // create container with subtype
+    auto c2 = byte_container_with_subtype(bytes, 42);
+
+    std::cout << std::boolalpha << "c1.has_subtype() = " << c1.has_subtype()
+              << "\nc2.has_subtype() = " << c2.has_subtype() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__has_subtype.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__has_subtype.output
new file mode 100644
index 00000000..f4aade2a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__has_subtype.output
@@ -0,0 +1,2 @@
+c1.has_subtype() = false
+c2.has_subtype() = true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__set_subtype.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__set_subtype.cpp
new file mode 100644
index 00000000..b2694c54
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__set_subtype.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+// define a byte container based on std::vector
+using byte_container_with_subtype = nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>;
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::vector<std::uint8_t> bytes = {{0xca, 0xfe, 0xba, 0xbe}};
+
+    // create container without subtype
+    auto c = byte_container_with_subtype(bytes);
+
+    std::cout << "before calling set_subtype(42): " << json(c) << '\n';
+
+    // set the subtype
+    c.set_subtype(42);
+
+    std::cout << "after calling set_subtype(42): " << json(c) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__set_subtype.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__set_subtype.output
new file mode 100644
index 00000000..648b3ef2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__set_subtype.output
@@ -0,0 +1,2 @@
+before calling set_subtype(42): {"bytes":[202,254,186,190],"subtype":null}
+after calling set_subtype(42): {"bytes":[202,254,186,190],"subtype":42}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__subtype.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__subtype.cpp
new file mode 100644
index 00000000..cd230ade
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__subtype.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+// define a byte container based on std::vector
+using byte_container_with_subtype = nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>;
+
+int main()
+{
+    std::vector<std::uint8_t> bytes = {{0xca, 0xfe, 0xba, 0xbe}};
+
+    // create container
+    auto c1 = byte_container_with_subtype(bytes);
+
+    // create container with subtype
+    auto c2 = byte_container_with_subtype(bytes, 42);
+
+    std::cout << "c1.subtype() = " << c1.subtype()
+              << "\nc2.subtype() = " << c2.subtype() << std::endl;
+
+    // in case no subtype is set, return special value
+    assert(c1.subtype() == static_cast<byte_container_with_subtype::subtype_type>(-1));
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__subtype.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__subtype.output
new file mode 100644
index 00000000..47955277
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/byte_container_with_subtype__subtype.output
@@ -0,0 +1,2 @@
+c1.subtype() = 18446744073709551615
+c2.subtype() = 42
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbegin.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbegin.cpp
new file mode 100644
index 00000000..bed2b372
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbegin.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    const json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to the first element
+    json::const_iterator it = array.cbegin();
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbegin.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbegin.output
new file mode 100644
index 00000000..d00491fd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbegin.output
@@ -0,0 +1 @@
+1
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbor_tag_handler_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbor_tag_handler_t.cpp
new file mode 100644
index 00000000..38d168ca
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbor_tag_handler_t.cpp
@@ -0,0 +1,28 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // tagged byte string
+    std::vector<std::uint8_t> vec = {{0xd8, 0x42, 0x44, 0xcA, 0xfe, 0xba, 0xbe}};
+
+    // cbor_tag_handler_t::error throws
+    try
+    {
+        auto b_throw_on_tag = json::from_cbor(vec, true, true, json::cbor_tag_handler_t::error);
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << std::endl;
+    }
+
+    // cbor_tag_handler_t::ignore ignores the tag
+    auto b_ignore_tag = json::from_cbor(vec, true, true, json::cbor_tag_handler_t::ignore);
+    std::cout << b_ignore_tag << std::endl;
+
+    // cbor_tag_handler_t::store stores the tag as binary subtype
+    auto b_store_tag = json::from_cbor(vec, true, true, json::cbor_tag_handler_t::store);
+    std::cout << b_store_tag << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbor_tag_handler_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbor_tag_handler_t.output
new file mode 100644
index 00000000..18920b13
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cbor_tag_handler_t.output
@@ -0,0 +1,3 @@
+[json.exception.parse_error.112] parse error at byte 1: syntax error while parsing CBOR value: invalid byte: 0xD8
+{"bytes":[202,254,186,190],"subtype":null}
+{"bytes":[202,254,186,190],"subtype":66}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cend.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cend.cpp
new file mode 100644
index 00000000..3050f500
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cend.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to one past the last element
+    json::const_iterator it = array.cend();
+
+    // decrement the iterator to point to the last element
+    --it;
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cend.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cend.output
new file mode 100644
index 00000000..7ed6ff82
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/cend.output
@@ -0,0 +1 @@
+5
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/clear.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/clear.cpp
new file mode 100644
index 00000000..f081e7ed
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/clear.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+
+    // call clear()
+    j_null.clear();
+    j_boolean.clear();
+    j_number_integer.clear();
+    j_number_float.clear();
+    j_object.clear();
+    j_array.clear();
+    j_string.clear();
+
+    // serialize the cleared values()
+    std::cout << j_null << '\n';
+    std::cout << j_boolean << '\n';
+    std::cout << j_number_integer << '\n';
+    std::cout << j_number_float << '\n';
+    std::cout << j_object << '\n';
+    std::cout << j_array << '\n';
+    std::cout << j_string << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/clear.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/clear.output
new file mode 100644
index 00000000..ea542cae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/clear.output
@@ -0,0 +1,7 @@
+null
+false
+0
+0.0
+{}
+[]
+""
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__json_pointer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__json_pointer.cpp
new file mode 100644
index 00000000..14d8514b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__json_pointer.cpp
@@ -0,0 +1,43 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    json j =
+    {
+        {"number", 1}, {"string", "foo"}, {"array", {1, 2}}
+    };
+
+    std::cout << std::boolalpha
+              << j.contains("/number"_json_pointer) << '\n'
+              << j.contains("/string"_json_pointer) << '\n'
+              << j.contains("/array"_json_pointer) << '\n'
+              << j.contains("/array/1"_json_pointer) << '\n'
+              << j.contains("/array/-"_json_pointer) << '\n'
+              << j.contains("/array/4"_json_pointer) << '\n'
+              << j.contains("/baz"_json_pointer) << std::endl;
+
+    try
+    {
+        // try to use an array index with leading '0'
+        j.contains("/array/01"_json_pointer);
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    try
+    {
+        // try to use an array index that is not a number
+        j.contains("/array/one"_json_pointer);
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__json_pointer.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__json_pointer.output
new file mode 100644
index 00000000..dd1eb38c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__json_pointer.output
@@ -0,0 +1,7 @@
+true
+true
+true
+true
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__keytype.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__keytype.c++17.cpp
new file mode 100644
index 00000000..43b62fab
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__keytype.c++17.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create some JSON values
+    json j_object = R"( {"key": "value"} )"_json;
+    json j_array = R"( [1, 2, 3] )"_json;
+
+    // call contains
+    std::cout << std::boolalpha <<
+              "j_object contains 'key': " << j_object.contains("key"sv) << '\n' <<
+              "j_object contains 'another': " << j_object.contains("another"sv) << '\n' <<
+              "j_array contains 'key': " << j_array.contains("key"sv) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__keytype.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__keytype.c++17.output
new file mode 100644
index 00000000..14ad177b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__keytype.c++17.output
@@ -0,0 +1,3 @@
+j_object contains 'key': true
+j_object contains 'another': false
+j_array contains 'key': false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__object_t_key_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__object_t_key_type.cpp
new file mode 100644
index 00000000..a8bc8143
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__object_t_key_type.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create some JSON values
+    json j_object = R"( {"key": "value"} )"_json;
+    json j_array = R"( [1, 2, 3] )"_json;
+
+    // call contains
+    std::cout << std::boolalpha <<
+              "j_object contains 'key': " << j_object.contains("key") << '\n' <<
+              "j_object contains 'another': " << j_object.contains("another") << '\n' <<
+              "j_array contains 'key': " << j_array.contains("key") << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__object_t_key_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__object_t_key_type.output
new file mode 100644
index 00000000..14ad177b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/contains__object_t_key_type.output
@@ -0,0 +1,3 @@
+j_object contains 'key': true
+j_object contains 'another': false
+j_array contains 'key': false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__keytype.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__keytype.c++17.cpp
new file mode 100644
index 00000000..ec6de060
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__keytype.c++17.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json j_object = {{"one", 1}, {"two", 2}};
+
+    // call count()
+    auto count_two = j_object.count("two"sv);
+    auto count_three = j_object.count("three"sv);
+
+    // print values
+    std::cout << "number of elements with key \"two\": " << count_two << '\n';
+    std::cout << "number of elements with key \"three\": " << count_three << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__keytype.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__keytype.c++17.output
new file mode 100644
index 00000000..d816fcb2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__keytype.c++17.output
@@ -0,0 +1,2 @@
+number of elements with key "two": 1
+number of elements with key "three": 0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__object_t_key_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__object_t_key_type.cpp
new file mode 100644
index 00000000..a8d54b9d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__object_t_key_type.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json j_object = {{"one", 1}, {"two", 2}};
+
+    // call count()
+    auto count_two = j_object.count("two");
+    auto count_three = j_object.count("three");
+
+    // print values
+    std::cout << "number of elements with key \"two\": " << count_two << '\n';
+    std::cout << "number of elements with key \"three\": " << count_three << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__object_t_key_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__object_t_key_type.output
new file mode 100644
index 00000000..d816fcb2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/count__object_t_key_type.output
@@ -0,0 +1,2 @@
+number of elements with key "two": 1
+number of elements with key "three": 0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crbegin.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crbegin.cpp
new file mode 100644
index 00000000..dc3209cf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crbegin.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to the reverse-beginning
+    json::const_reverse_iterator it = array.crbegin();
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crbegin.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crbegin.output
new file mode 100644
index 00000000..7ed6ff82
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crbegin.output
@@ -0,0 +1 @@
+5
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crend.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crend.cpp
new file mode 100644
index 00000000..dff26093
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crend.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to the reverse-end
+    json::const_reverse_iterator it = array.crend();
+
+    // increment the iterator to point to the first element
+    --it;
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crend.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crend.output
new file mode 100644
index 00000000..d00491fd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/crend.output
@@ -0,0 +1 @@
+1
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/default_object_comparator_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/default_object_comparator_t.cpp
new file mode 100644
index 00000000..9f200fe6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/default_object_comparator_t.cpp
@@ -0,0 +1,11 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha
+              << "one < two : " << json::default_object_comparator_t{}("one", "two") << "\n"
+              << "three < four : " << json::default_object_comparator_t{}("three", "four") << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/default_object_comparator_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/default_object_comparator_t.output
new file mode 100644
index 00000000..b1daf3b9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/default_object_comparator_t.output
@@ -0,0 +1,2 @@
+one < two : true
+three < four : false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostic_positions.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostic_positions.cpp
new file mode 100644
index 00000000..259344cd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostic_positions.cpp
@@ -0,0 +1,51 @@
+#include <iostream>
+
+#define JSON_DIAGNOSTIC_POSITIONS 1
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::string json_string = R"(
+    {
+        "address": {
+            "street": "Fake Street",
+            "housenumber": 1
+        }
+    }
+    )";
+    json j = json::parse(json_string);
+
+    std::cout << "Root diagnostic positions: \n";
+    std::cout << "\tstart_pos: " << j.start_pos() << '\n';
+    std::cout << "\tend_pos:" << j.end_pos() << "\n";
+    std::cout << "Original string: \n";
+    std::cout << "{\n        \"address\": {\n            \"street\": \"Fake Street\",\n            \"housenumber\": 1\n        }\n    }" << "\n";
+    std::cout << "Parsed string: \n";
+    std::cout << json_string.substr(j.start_pos(), j.end_pos() - j.start_pos()) << "\n\n";
+
+    std::cout << "address diagnostic positions: \n";
+    std::cout << "\tstart_pos:" << j["address"].start_pos() << '\n';
+    std::cout << "\tend_pos:" << j["address"].end_pos() << "\n\n";
+    std::cout << "Original string: \n";
+    std::cout << "{            \"street\": \"Fake Street\",\n            \"housenumber\": 1\n        }" << "\n";
+    std::cout << "Parsed string: \n";
+    std::cout << json_string.substr(j["address"].start_pos(), j["address"].end_pos() - j["address"].start_pos()) << "\n\n";
+
+    std::cout << "street diagnostic positions: \n";
+    std::cout << "\tstart_pos:" << j["address"]["street"].start_pos() << '\n';
+    std::cout << "\tend_pos:" << j["address"]["street"].end_pos() << "\n\n";
+    std::cout << "Original string: \n";
+    std::cout << "\"Fake Street\"" << "\n";
+    std::cout << "Parsed string: \n";
+    std::cout << json_string.substr(j["address"]["street"].start_pos(), j["address"]["street"].end_pos() - j["address"]["street"].start_pos()) << "\n\n";
+
+    std::cout << "housenumber diagnostic positions: \n";
+    std::cout << "\tstart_pos:" << j["address"]["housenumber"].start_pos() << '\n';
+    std::cout << "\tend_pos:" << j["address"]["housenumber"].end_pos() << "\n\n";
+    std::cout << "Original string: \n";
+    std::cout << "1" << "\n";
+    std::cout << "Parsed string: \n";
+    std::cout << json_string.substr(j["address"]["housenumber"].start_pos(), j["address"]["housenumber"].end_pos() - j["address"]["housenumber"].start_pos()) << "\n\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostic_positions.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostic_positions.output
new file mode 100644
index 00000000..a6becc0e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostic_positions.output
@@ -0,0 +1,50 @@
+Root diagnostic positions: 
+	start_pos: 5
+	end_pos:109
+Original string: 
+{
+        "address": {
+            "street": "Fake Street",
+            "housenumber": 1
+        }
+    }
+Parsed string: 
+{
+        "address": {
+            "street": "Fake Street",
+            "housenumber": 1
+        }
+    }
+
+address diagnostic positions: 
+	start_pos:26
+	end_pos:103
+
+Original string: 
+{            "street": "Fake Street",
+            "housenumber": 1
+        }
+Parsed string: 
+{
+            "street": "Fake Street",
+            "housenumber": 1
+        }
+
+street diagnostic positions: 
+	start_pos:50
+	end_pos:63
+
+Original string: 
+"Fake Street"
+Parsed string: 
+"Fake Street"
+
+housenumber diagnostic positions: 
+	start_pos:92
+	end_pos:93
+
+Original string: 
+1
+Parsed string: 
+1
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_extended.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_extended.cpp
new file mode 100644
index 00000000..3b9f484b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_extended.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+
+# define JSON_DIAGNOSTICS 1
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    json j;
+    j["address"]["street"] = "Fake Street";
+    j["address"]["housenumber"] = "12";
+
+    try
+    {
+        int housenumber = j["address"]["housenumber"];
+    }
+    catch (const json::exception& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_extended.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_extended.output
new file mode 100644
index 00000000..f142927a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_extended.output
@@ -0,0 +1 @@
+[json.exception.type_error.302] (/address/housenumber) type must be number, but is string
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_standard.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_standard.cpp
new file mode 100644
index 00000000..eae61a4a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_standard.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    json j;
+    j["address"]["street"] = "Fake Street";
+    j["address"]["housenumber"] = "12";
+
+    try
+    {
+        int housenumber = j["address"]["housenumber"];
+    }
+    catch (const json::exception& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_standard.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_standard.output
new file mode 100644
index 00000000..79707a0c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diagnostics_standard.output
@@ -0,0 +1 @@
+[json.exception.type_error.302] type must be number, but is string
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diff.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diff.cpp
new file mode 100644
index 00000000..ef01332a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diff.cpp
@@ -0,0 +1,37 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // the source document
+    json source = R"(
+        {
+            "baz": "qux",
+            "foo": "bar"
+        }
+    )"_json;
+
+    // the target document
+    json target = R"(
+        {
+            "baz": "boo",
+            "hello": [
+                "world"
+            ]
+        }
+    )"_json;
+
+    // create the patch
+    json patch = json::diff(source, target);
+
+    // roundtrip
+    json patched_source = source.patch(patch);
+
+    // output patch and roundtrip result
+    std::cout << std::setw(4) << patch << "\n\n"
+              << std::setw(4) << patched_source << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diff.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diff.output
new file mode 100644
index 00000000..7dc79791
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/diff.output
@@ -0,0 +1,25 @@
+[
+    {
+        "op": "replace",
+        "path": "/baz",
+        "value": "boo"
+    },
+    {
+        "op": "remove",
+        "path": "/foo"
+    },
+    {
+        "op": "add",
+        "path": "/hello",
+        "value": [
+            "world"
+        ]
+    }
+]
+
+{
+    "baz": "boo",
+    "hello": [
+        "world"
+    ]
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/dump.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/dump.cpp
new file mode 100644
index 00000000..009c95fd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/dump.cpp
@@ -0,0 +1,48 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hellö 😀!";
+
+    // call dump()
+    std::cout << "objects:" << '\n'
+              << j_object.dump() << "\n\n"
+              << j_object.dump(-1) << "\n\n"
+              << j_object.dump(0) << "\n\n"
+              << j_object.dump(4) << "\n\n"
+              << j_object.dump(1, '\t') << "\n\n";
+
+    std::cout << "arrays:" << '\n'
+              << j_array.dump() << "\n\n"
+              << j_array.dump(-1) << "\n\n"
+              << j_array.dump(0) << "\n\n"
+              << j_array.dump(4) << "\n\n"
+              << j_array.dump(1, '\t') << "\n\n";
+
+    std::cout << "strings:" << '\n'
+              << j_string.dump() << '\n'
+              << j_string.dump(-1, ' ', true) << '\n';
+
+    // create JSON value with invalid UTF-8 byte sequence
+    json j_invalid = "ä\xA9ü";
+    try
+    {
+        std::cout << j_invalid.dump() << std::endl;
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << std::endl;
+    }
+
+    std::cout << "string with replaced invalid characters: "
+              << j_invalid.dump(-1, ' ', false, json::error_handler_t::replace)
+              << "\nstring with ignored invalid characters: "
+              << j_invalid.dump(-1, ' ', false, json::error_handler_t::ignore)
+              << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/dump.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/dump.output
new file mode 100644
index 00000000..43009fe6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/dump.output
@@ -0,0 +1,55 @@
+objects:
+{"one":1,"two":2}
+
+{"one":1,"two":2}
+
+{
+"one": 1,
+"two": 2
+}
+
+{
+    "one": 1,
+    "two": 2
+}
+
+{
+	"one": 1,
+	"two": 2
+}
+
+arrays:
+[1,2,4,8,16]
+
+[1,2,4,8,16]
+
+[
+1,
+2,
+4,
+8,
+16
+]
+
+[
+    1,
+    2,
+    4,
+    8,
+    16
+]
+
+[
+	1,
+	2,
+	4,
+	8,
+	16
+]
+
+strings:
+"Hellö 😀!"
+"Hell\u00f6 \ud83d\ude00!"
+[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9
+string with replaced invalid characters: "ä�ü"
+string with ignored invalid characters: "äü"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace.cpp
new file mode 100644
index 00000000..a5314910
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json object = {{"one", 1}, {"two", 2}};
+    json null;
+
+    // print values
+    std::cout << object << '\n';
+    std::cout << null << '\n';
+
+    // add values
+    auto res1 = object.emplace("three", 3);
+    null.emplace("A", "a");
+    null.emplace("B", "b");
+
+    // the following call will not add an object, because there is already
+    // a value stored at key "B"
+    auto res2 = null.emplace("B", "c");
+
+    // print values
+    std::cout << object << '\n';
+    std::cout << *res1.first << " " << std::boolalpha << res1.second << '\n';
+
+    std::cout << null << '\n';
+    std::cout << *res2.first << " " << std::boolalpha << res2.second << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace.output
new file mode 100644
index 00000000..83d6f773
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace.output
@@ -0,0 +1,6 @@
+{"one":1,"two":2}
+null
+{"one":1,"three":3,"two":2}
+3 true
+{"A":"a","B":"b"}
+"b" false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace_back.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace_back.cpp
new file mode 100644
index 00000000..e979a945
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace_back.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json array = {1, 2, 3, 4, 5};
+    json null;
+
+    // print values
+    std::cout << array << '\n';
+    std::cout << null << '\n';
+
+    // add values
+    array.emplace_back(6);
+    null.emplace_back("first");
+    null.emplace_back(3, "second");
+
+    // print values
+    std::cout << array << '\n';
+    std::cout << null << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace_back.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace_back.output
new file mode 100644
index 00000000..bdd80d82
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/emplace_back.output
@@ -0,0 +1,4 @@
+[1,2,3,4,5]
+null
+[1,2,3,4,5,6]
+["first",["second","second","second"]]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/empty.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/empty.cpp
new file mode 100644
index 00000000..6ef6e40e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/empty.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_object_empty(json::value_t::object);
+    json j_array = {1, 2, 4, 8, 16};
+    json j_array_empty(json::value_t::array);
+    json j_string = "Hello, world";
+
+    // call empty()
+    std::cout << std::boolalpha;
+    std::cout << j_null.empty() << '\n';
+    std::cout << j_boolean.empty() << '\n';
+    std::cout << j_number_integer.empty() << '\n';
+    std::cout << j_number_float.empty() << '\n';
+    std::cout << j_object.empty() << '\n';
+    std::cout << j_object_empty.empty() << '\n';
+    std::cout << j_array.empty() << '\n';
+    std::cout << j_array_empty.empty() << '\n';
+    std::cout << j_string.empty() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/empty.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/empty.output
new file mode 100644
index 00000000..d071a398
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/empty.output
@@ -0,0 +1,9 @@
+true
+false
+false
+false
+false
+true
+false
+true
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/end.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/end.cpp
new file mode 100644
index 00000000..47beedb7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/end.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to one past the last element
+    json::iterator it = array.end();
+
+    // decrement the iterator to point to the last element
+    --it;
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/end.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/end.output
new file mode 100644
index 00000000..7ed6ff82
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/end.output
@@ -0,0 +1 @@
+5
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType.cpp
new file mode 100644
index 00000000..f0d4ec6f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+
+    // call erase()
+    j_boolean.erase(j_boolean.begin());
+    j_number_integer.erase(j_number_integer.begin());
+    j_number_float.erase(j_number_float.begin());
+    j_object.erase(j_object.find("two"));
+    j_array.erase(j_array.begin() + 2);
+    j_string.erase(j_string.begin());
+
+    // print values
+    std::cout << j_boolean << '\n';
+    std::cout << j_number_integer << '\n';
+    std::cout << j_number_float << '\n';
+    std::cout << j_object << '\n';
+    std::cout << j_array << '\n';
+    std::cout << j_string << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType.output
new file mode 100644
index 00000000..e392f8ea
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType.output
@@ -0,0 +1,6 @@
+null
+null
+null
+{"one":1}
+[1,2,8,16]
+null
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType_IteratorType.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType_IteratorType.cpp
new file mode 100644
index 00000000..392511ff
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType_IteratorType.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+
+    // call erase()
+    j_boolean.erase(j_boolean.begin(), j_boolean.end());
+    j_number_integer.erase(j_number_integer.begin(), j_number_integer.end());
+    j_number_float.erase(j_number_float.begin(), j_number_float.end());
+    j_object.erase(j_object.find("two"), j_object.end());
+    j_array.erase(j_array.begin() + 1, j_array.begin() + 3);
+    j_string.erase(j_string.begin(), j_string.end());
+
+    // print values
+    std::cout << j_boolean << '\n';
+    std::cout << j_number_integer << '\n';
+    std::cout << j_number_float << '\n';
+    std::cout << j_object << '\n';
+    std::cout << j_array << '\n';
+    std::cout << j_string << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType_IteratorType.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType_IteratorType.output
new file mode 100644
index 00000000..5d01f008
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__IteratorType_IteratorType.output
@@ -0,0 +1,6 @@
+null
+null
+null
+{"one":1}
+[1,8,16]
+null
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__keytype.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__keytype.c++17.cpp
new file mode 100644
index 00000000..c5e4bed5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__keytype.c++17.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json j_object = {{"one", 1}, {"two", 2}};
+
+    // call erase()
+    auto count_one = j_object.erase("one"sv);
+    auto count_three = j_object.erase("three"sv);
+
+    // print values
+    std::cout << j_object << '\n';
+    std::cout << count_one << " " << count_three << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__keytype.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__keytype.c++17.output
new file mode 100644
index 00000000..28d79391
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__keytype.c++17.output
@@ -0,0 +1,2 @@
+{"two":2}
+1 0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__object_t_key_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__object_t_key_type.cpp
new file mode 100644
index 00000000..2fd84c86
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__object_t_key_type.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json j_object = {{"one", 1}, {"two", 2}};
+
+    // call erase()
+    auto count_one = j_object.erase("one");
+    auto count_three = j_object.erase("three");
+
+    // print values
+    std::cout << j_object << '\n';
+    std::cout << count_one << " " << count_three << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__object_t_key_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__object_t_key_type.output
new file mode 100644
index 00000000..28d79391
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__object_t_key_type.output
@@ -0,0 +1,2 @@
+{"two":2}
+1 0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__size_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__size_type.cpp
new file mode 100644
index 00000000..81006238
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__size_type.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON array
+    json j_array = {0, 1, 2, 3, 4, 5};
+
+    // call erase()
+    j_array.erase(2);
+
+    // print values
+    std::cout << j_array << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__size_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__size_type.output
new file mode 100644
index 00000000..4ad74061
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/erase__size_type.output
@@ -0,0 +1 @@
+[0,1,3,4,5]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/error_handler_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/error_handler_t.cpp
new file mode 100644
index 00000000..b4718d7e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/error_handler_t.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON value with invalid UTF-8 byte sequence
+    json j_invalid = "ä\xA9ü";
+    try
+    {
+        std::cout << j_invalid.dump() << std::endl;
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << std::endl;
+    }
+
+    std::cout << "string with replaced invalid characters: "
+              << j_invalid.dump(-1, ' ', false, json::error_handler_t::replace)
+              << "\nstring with ignored invalid characters: "
+              << j_invalid.dump(-1, ' ', false, json::error_handler_t::ignore)
+              << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/error_handler_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/error_handler_t.output
new file mode 100644
index 00000000..718d62be
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/error_handler_t.output
@@ -0,0 +1,3 @@
+[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9
+string with replaced invalid characters: "ä�ü"
+string with ignored invalid characters: "äü"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/exception.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/exception.cpp
new file mode 100644
index 00000000..3e5a23b3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/exception.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    try
+    {
+        // calling at() for a non-existing key
+        json j = {{"foo", "bar"}};
+        json k = j.at("non-existing");
+    }
+    catch (const json::exception& e)
+    {
+        // output exception information
+        std::cout << "message: " << e.what() << '\n'
+                  << "exception id: " << e.id << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/exception.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/exception.output
new file mode 100644
index 00000000..fa20df6e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/exception.output
@@ -0,0 +1,2 @@
+message: [json.exception.out_of_range.403] key 'non-existing' not found
+exception id: 403
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__keytype.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__keytype.c++17.cpp
new file mode 100644
index 00000000..da94cf0a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__keytype.c++17.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json j_object = {{"one", 1}, {"two", 2}};
+
+    // call find
+    auto it_two = j_object.find("two"sv);
+    auto it_three = j_object.find("three"sv);
+
+    // print values
+    std::cout << std::boolalpha;
+    std::cout << "\"two\" was found: " << (it_two != j_object.end()) << '\n';
+    std::cout << "value at key \"two\": " << *it_two << '\n';
+    std::cout << "\"three\" was found: " << (it_three != j_object.end()) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__keytype.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__keytype.c++17.output
new file mode 100644
index 00000000..509bb42d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__keytype.c++17.output
@@ -0,0 +1,3 @@
+"two" was found: true
+value at key "two": 2
+"three" was found: false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__object_t_key_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__object_t_key_type.cpp
new file mode 100644
index 00000000..685ba776
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__object_t_key_type.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json j_object = {{"one", 1}, {"two", 2}};
+
+    // call find
+    auto it_two = j_object.find("two");
+    auto it_three = j_object.find("three");
+
+    // print values
+    std::cout << std::boolalpha;
+    std::cout << "\"two\" was found: " << (it_two != j_object.end()) << '\n';
+    std::cout << "value at key \"two\": " << *it_two << '\n';
+    std::cout << "\"three\" was found: " << (it_three != j_object.end()) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__object_t_key_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__object_t_key_type.output
new file mode 100644
index 00000000..509bb42d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/find__object_t_key_type.output
@@ -0,0 +1,3 @@
+"two" was found: true
+value at key "two": 2
+"three" was found: false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/flatten.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/flatten.cpp
new file mode 100644
index 00000000..83f3ff6c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/flatten.cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON value
+    json j =
+    {
+        {"pi", 3.141},
+        {"happy", true},
+        {"name", "Niels"},
+        {"nothing", nullptr},
+        {
+            "answer", {
+                {"everything", 42}
+            }
+        },
+        {"list", {1, 0, 2}},
+        {
+            "object", {
+                {"currency", "USD"},
+                {"value", 42.99}
+            }
+        }
+    };
+
+    // call flatten()
+    std::cout << std::setw(4) << j.flatten() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/flatten.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/flatten.output
new file mode 100644
index 00000000..33bd4c4b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/flatten.output
@@ -0,0 +1,12 @@
+{
+    "/answer/everything": 42,
+    "/happy": true,
+    "/list/0": 1,
+    "/list/1": 0,
+    "/list/2": 2,
+    "/name": "Niels",
+    "/nothing": null,
+    "/object/currency": "USD",
+    "/object/value": 42.99,
+    "/pi": 3.141
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bjdata.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bjdata.cpp
new file mode 100644
index 00000000..961164c2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bjdata.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create byte vector
+    std::vector<std::uint8_t> v = {0x7B, 0x69, 0x07, 0x63, 0x6F, 0x6D, 0x70, 0x61,
+                                   0x63, 0x74, 0x54, 0x69, 0x06, 0x73, 0x63, 0x68,
+                                   0x65, 0x6D, 0x61, 0x69, 0x00, 0x7D
+                                  };
+
+    // deserialize it with BJData
+    json j = json::from_bjdata(v);
+
+    // print the deserialized JSON value
+    std::cout << std::setw(2) << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bjdata.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bjdata.output
new file mode 100644
index 00000000..259f63bd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bjdata.output
@@ -0,0 +1,4 @@
+{
+  "compact": true,
+  "schema": 0
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bson.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bson.cpp
new file mode 100644
index 00000000..c9d9fdfa
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bson.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create byte vector
+    std::vector<std::uint8_t> v = {0x1b, 0x00, 0x00, 0x00, 0x08, 0x63, 0x6f, 0x6d,
+                                   0x70, 0x61, 0x63, 0x74, 0x00, 0x01, 0x10, 0x73,
+                                   0x63, 0x68, 0x65, 0x6d, 0x61, 0x00, 0x00, 0x00,
+                                   0x00, 0x00, 0x00
+                                  };
+
+    // deserialize it with BSON
+    json j = json::from_bson(v);
+
+    // print the deserialized JSON value
+    std::cout << std::setw(2) << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bson.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bson.output
new file mode 100644
index 00000000..259f63bd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_bson.output
@@ -0,0 +1,4 @@
+{
+  "compact": true,
+  "schema": 0
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_cbor.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_cbor.cpp
new file mode 100644
index 00000000..e685329e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_cbor.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create byte vector
+    std::vector<std::uint8_t> v = {0xa2, 0x67, 0x63, 0x6f, 0x6d, 0x70, 0x61, 0x63,
+                                   0x74, 0xf5, 0x66, 0x73, 0x63, 0x68, 0x65, 0x6d,
+                                   0x61, 0x00
+                                  };
+
+    // deserialize it with CBOR
+    json j = json::from_cbor(v);
+
+    // print the deserialized JSON value
+    std::cout << std::setw(2) << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_cbor.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_cbor.output
new file mode 100644
index 00000000..259f63bd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_cbor.output
@@ -0,0 +1,4 @@
+{
+  "compact": true,
+  "schema": 0
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__default_constructible.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__default_constructible.cpp
new file mode 100644
index 00000000..07d71ac9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__default_constructible.cpp
@@ -0,0 +1,37 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+namespace ns
+{
+// a simple struct to model a person
+struct person
+{
+    std::string name;
+    std::string address;
+    int age;
+};
+} // namespace ns
+
+namespace ns
+{
+void from_json(const json& j, person& p)
+{
+    j.at("name").get_to(p.name);
+    j.at("address").get_to(p.address);
+    j.at("age").get_to(p.age);
+}
+} // namespace ns
+
+int main()
+{
+    json j;
+    j["name"] = "Ned Flanders";
+    j["address"] = "744 Evergreen Terrace";
+    j["age"] = 60;
+
+    auto p = j.template get<ns::person>();
+
+    std::cout << p.name << " (" << p.age << ") lives in " << p.address << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__default_constructible.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__default_constructible.output
new file mode 100644
index 00000000..b9245232
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__default_constructible.output
@@ -0,0 +1 @@
+Ned Flanders (60) lives in 744 Evergreen Terrace
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__non_default_constructible.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__non_default_constructible.cpp
new file mode 100644
index 00000000..ec8206ea
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__non_default_constructible.cpp
@@ -0,0 +1,53 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+namespace ns
+{
+// a simple struct to model a person (not default constructible)
+struct person
+{
+    person(std::string n, std::string a, int aa)
+        : name(std::move(n)), address(std::move(a)), age(aa)
+    {}
+
+    std::string name;
+    std::string address;
+    int age;
+};
+} // namespace ns
+
+namespace nlohmann
+{
+template <>
+struct adl_serializer<ns::person>
+{
+    static ns::person from_json(const json& j)
+    {
+        return {j.at("name"), j.at("address"), j.at("age")};
+    }
+
+    // Here's the catch! You must provide a to_json method! Otherwise, you
+    // will not be able to convert person to json, since you fully
+    // specialized adl_serializer on that type
+    static void to_json(json& j, ns::person p)
+    {
+        j["name"] = p.name;
+        j["address"] = p.address;
+        j["age"] = p.age;
+    }
+};
+} // namespace nlohmann
+
+int main()
+{
+    json j;
+    j["name"] = "Ned Flanders";
+    j["address"] = "744 Evergreen Terrace";
+    j["age"] = 60;
+
+    auto p = j.template get<ns::person>();
+
+    std::cout << p.name << " (" << p.age << ") lives in " << p.address << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__non_default_constructible.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__non_default_constructible.output
new file mode 100644
index 00000000..b9245232
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_json__non_default_constructible.output
@@ -0,0 +1 @@
+Ned Flanders (60) lives in 744 Evergreen Terrace
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_msgpack.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_msgpack.cpp
new file mode 100644
index 00000000..5c2183f1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_msgpack.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create byte vector
+    std::vector<std::uint8_t> v = {0x82, 0xa7, 0x63, 0x6f, 0x6d, 0x70, 0x61, 0x63,
+                                   0x74, 0xc3, 0xa6, 0x73, 0x63, 0x68, 0x65, 0x6d,
+                                   0x61, 0x00
+                                  };
+
+    // deserialize it with MessagePack
+    json j = json::from_msgpack(v);
+
+    // print the deserialized JSON value
+    std::cout << std::setw(2) << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_msgpack.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_msgpack.output
new file mode 100644
index 00000000..259f63bd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_msgpack.output
@@ -0,0 +1,4 @@
+{
+  "compact": true,
+  "schema": 0
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_ubjson.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_ubjson.cpp
new file mode 100644
index 00000000..1e85e4e3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_ubjson.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create byte vector
+    std::vector<std::uint8_t> v = {0x7B, 0x69, 0x07, 0x63, 0x6F, 0x6D, 0x70, 0x61,
+                                   0x63, 0x74, 0x54, 0x69, 0x06, 0x73, 0x63, 0x68,
+                                   0x65, 0x6D, 0x61, 0x69, 0x00, 0x7D
+                                  };
+
+    // deserialize it with UBJSON
+    json j = json::from_ubjson(v);
+
+    // print the deserialized JSON value
+    std::cout << std::setw(2) << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_ubjson.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_ubjson.output
new file mode 100644
index 00000000..259f63bd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/from_ubjson.output
@@ -0,0 +1,4 @@
+{
+  "compact": true,
+  "schema": 0
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/front.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/front.cpp
new file mode 100644
index 00000000..a0f63068
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/front.cpp
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_object_empty(json::value_t::object);
+    json j_array = {1, 2, 4, 8, 16};
+    json j_array_empty(json::value_t::array);
+    json j_string = "Hello, world";
+
+    // call front()
+    //std::cout << j_null.front() << '\n';          // would throw
+    std::cout << j_boolean.front() << '\n';
+    std::cout << j_number_integer.front() << '\n';
+    std::cout << j_number_float.front() << '\n';
+    std::cout << j_object.front() << '\n';
+    //std::cout << j_object_empty.front() << '\n';  // undefined behavior
+    std::cout << j_array.front() << '\n';
+    //std::cout << j_array_empty.front() << '\n';   // undefined behavior
+    std::cout << j_string.front() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/front.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/front.output
new file mode 100644
index 00000000..6301db53
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/front.output
@@ -0,0 +1,6 @@
+true
+17
+23.42
+1
+1
+"Hello, world"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__PointerType.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__PointerType.cpp
new file mode 100644
index 00000000..309c8dee
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__PointerType.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON number
+    json value = 17;
+
+    // explicitly getting pointers
+    auto p1 = value.template get<const json::number_integer_t*>();
+    auto p2 = value.template get<json::number_integer_t*>();
+    auto p3 = value.template get<json::number_integer_t* const>();
+    auto p4 = value.template get<const json::number_integer_t* const>();
+    auto p5 = value.template get<json::number_float_t*>();
+
+    // print the pointees
+    std::cout << *p1 << ' ' << *p2 << ' ' << *p3 << ' ' << *p4 << '\n';
+    std::cout << std::boolalpha << (p5 == nullptr) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__PointerType.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__PointerType.output
new file mode 100644
index 00000000..a15dd774
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__PointerType.output
@@ -0,0 +1,2 @@
+17 17 17 17
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__ValueType_const.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__ValueType_const.cpp
new file mode 100644
index 00000000..db63791f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__ValueType_const.cpp
@@ -0,0 +1,50 @@
+#include <iostream>
+#include <unordered_map>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON value with different types
+    json json_types =
+    {
+        {"boolean", true},
+        {
+            "number", {
+                {"integer", 42},
+                {"floating-point", 17.23}
+            }
+        },
+        {"string", "Hello, world!"},
+        {"array", {1, 2, 3, 4, 5}},
+        {"null", nullptr}
+    };
+
+    // use explicit conversions
+    auto v1 = json_types["boolean"].template get<bool>();
+    auto v2 = json_types["number"]["integer"].template get<int>();
+    auto v3 = json_types["number"]["integer"].template get<short>();
+    auto v4 = json_types["number"]["floating-point"].template get<float>();
+    auto v5 = json_types["number"]["floating-point"].template get<int>();
+    auto v6 = json_types["string"].template get<std::string>();
+    auto v7 = json_types["array"].template get<std::vector<short>>();
+    auto v8 = json_types.template get<std::unordered_map<std::string, json>>();
+
+    // print the conversion results
+    std::cout << v1 << '\n';
+    std::cout << v2 << ' ' << v3 << '\n';
+    std::cout << v4 << ' ' << v5 << '\n';
+    std::cout << v6 << '\n';
+
+    for (auto i : v7)
+    {
+        std::cout << i << ' ';
+    }
+    std::cout << "\n\n";
+
+    for (auto i : v8)
+    {
+        std::cout << i.first << ": " << i.second << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__ValueType_const.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__ValueType_const.output
new file mode 100644
index 00000000..5cd9cd3a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get__ValueType_const.output
@@ -0,0 +1,11 @@
+1
+42 42
+17.23 17
+Hello, world!
+1 2 3 4 5 
+
+string: "Hello, world!"
+number: {"floating-point":17.23,"integer":42}
+null: null
+boolean: true
+array: [1,2,3,4,5]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_allocator.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_allocator.cpp
new file mode 100644
index 00000000..35079a10
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_allocator.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    auto alloc = json::get_allocator();
+    using traits_t = std::allocator_traits<decltype(alloc)>;
+
+    json* j = traits_t::allocate(alloc, 1);
+    traits_t::construct(alloc, j, "Hello, world!");
+
+    std::cout << *j << std::endl;
+
+    traits_t::destroy(alloc, j);
+    traits_t::deallocate(alloc, j, 1);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_allocator.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_allocator.output
new file mode 100644
index 00000000..8effb3e8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_allocator.output
@@ -0,0 +1 @@
+"Hello, world!"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_binary.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_binary.cpp
new file mode 100644
index 00000000..617ce609
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_binary.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a binary vector
+    std::vector<std::uint8_t> vec = {0xCA, 0xFE, 0xBA, 0xBE};
+
+    // create a binary JSON value with subtype 42
+    json j = json::binary(vec, 42);
+
+    // output type and subtype
+    std::cout << "type: " << j.type_name() << ", subtype: " << j.get_binary().subtype() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_binary.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_binary.output
new file mode 100644
index 00000000..74b05d23
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_binary.output
@@ -0,0 +1 @@
+type: binary, subtype: 42
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ptr.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ptr.cpp
new file mode 100644
index 00000000..564ce0f4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ptr.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON number
+    json value = 17;
+
+    // explicitly getting pointers
+    auto p1 = value.get_ptr<const json::number_integer_t*>();
+    auto p2 = value.get_ptr<json::number_integer_t*>();
+    auto p3 = value.get_ptr<json::number_integer_t* const>();
+    auto p4 = value.get_ptr<const json::number_integer_t* const>();
+    auto p5 = value.get_ptr<json::number_float_t*>();
+
+    // print the pointees
+    std::cout << *p1 << ' ' << *p2 << ' ' << *p3 << ' ' << *p4 << '\n';
+    std::cout << std::boolalpha << (p5 == nullptr) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ptr.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ptr.output
new file mode 100644
index 00000000..a15dd774
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ptr.output
@@ -0,0 +1,2 @@
+17 17 17 17
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ref.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ref.cpp
new file mode 100644
index 00000000..0183a653
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ref.cpp
@@ -0,0 +1,27 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON number
+    json value = 17;
+
+    // explicitly getting references
+    auto r1 = value.get_ref<const json::number_integer_t&>();
+    auto r2 = value.get_ref<json::number_integer_t&>();
+
+    // print the values
+    std::cout << r1 << ' ' << r2 << '\n';
+
+    // incompatible type throws exception
+    try
+    {
+        auto r3 = value.get_ref<json::number_float_t&>();
+    }
+    catch (const json::type_error& ex)
+    {
+        std::cout << ex.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ref.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ref.output
new file mode 100644
index 00000000..3811afa2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_ref.output
@@ -0,0 +1,2 @@
+17 17
+[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_to.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_to.cpp
new file mode 100644
index 00000000..358c8d43
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_to.cpp
@@ -0,0 +1,59 @@
+#include <iostream>
+#include <unordered_map>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON value with different types
+    json json_types =
+    {
+        {"boolean", true},
+        {
+            "number", {
+                {"integer", 42},
+                {"floating-point", 17.23}
+            }
+        },
+        {"string", "Hello, world!"},
+        {"array", {1, 2, 3, 4, 5}},
+        {"null", nullptr}
+    };
+
+    bool v1;
+    int v2;
+    short v3;
+    float v4;
+    int v5;
+    std::string v6;
+    std::vector<short> v7;
+    std::unordered_map<std::string, json> v8;
+
+    // use explicit conversions
+    json_types["boolean"].get_to(v1);
+    json_types["number"]["integer"].get_to(v2);
+    json_types["number"]["integer"].get_to(v3);
+    json_types["number"]["floating-point"].get_to(v4);
+    json_types["number"]["floating-point"].get_to(v5);
+    json_types["string"].get_to(v6);
+    json_types["array"].get_to(v7);
+    json_types.get_to(v8);
+
+    // print the conversion results
+    std::cout << v1 << '\n';
+    std::cout << v2 << ' ' << v3 << '\n';
+    std::cout << v4 << ' ' << v5 << '\n';
+    std::cout << v6 << '\n';
+
+    for (auto i : v7)
+    {
+        std::cout << i << ' ';
+    }
+    std::cout << "\n\n";
+
+    for (auto i : v8)
+    {
+        std::cout << i.first << ": " << i.second << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_to.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_to.output
new file mode 100644
index 00000000..5cd9cd3a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/get_to.output
@@ -0,0 +1,11 @@
+1
+42 42
+17.23 17
+Hello, world!
+1 2 3 4 5 
+
+string: "Hello, world!"
+number: {"floating-point":17.23,"integer":42}
+null: null
+boolean: true
+array: [1,2,3,4,5]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert.cpp
new file mode 100644
index 00000000..4ee60987
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON array
+    json v = {1, 2, 3, 4};
+
+    // insert number 10 before number 3
+    auto new_pos = v.insert(v.begin() + 2, 10);
+
+    // output new array and result of insert call
+    std::cout << *new_pos << '\n';
+    std::cout << v << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert.output
new file mode 100644
index 00000000..ed5cab1d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert.output
@@ -0,0 +1,2 @@
+10
+[1,2,10,3,4]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__count.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__count.cpp
new file mode 100644
index 00000000..ce33b93e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__count.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON array
+    json v = {1, 2, 3, 4};
+
+    // insert number 7 copies of number 7 before number 3
+    auto new_pos = v.insert(v.begin() + 2, 7, 7);
+
+    // output new array and result of insert call
+    std::cout << *new_pos << '\n';
+    std::cout << v << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__count.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__count.output
new file mode 100644
index 00000000..294685ac
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__count.output
@@ -0,0 +1,2 @@
+7
+[1,2,7,7,7,7,7,7,7,3,4]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__ilist.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__ilist.cpp
new file mode 100644
index 00000000..a20766a1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__ilist.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON array
+    json v = {1, 2, 3, 4};
+
+    // insert range from v2 before the end of array v
+    auto new_pos = v.insert(v.end(), {7, 8, 9});
+
+    // output new array and result of insert call
+    std::cout << *new_pos << '\n';
+    std::cout << v << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__ilist.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__ilist.output
new file mode 100644
index 00000000..b2fc7eeb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__ilist.output
@@ -0,0 +1,2 @@
+7
+[1,2,3,4,7,8,9]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range.cpp
new file mode 100644
index 00000000..92fe63b0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON array
+    json v = {1, 2, 3, 4};
+
+    // create a JSON array to copy values from
+    json v2 = {"one", "two", "three", "four"};
+
+    // insert range from v2 before the end of array v
+    auto new_pos = v.insert(v.end(), v2.begin(), v2.end());
+
+    // output new array and result of insert call
+    std::cout << *new_pos << '\n';
+    std::cout << v << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range.output
new file mode 100644
index 00000000..d50e9f63
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range.output
@@ -0,0 +1,2 @@
+"one"
+[1,2,3,4,"one","two","three","four"]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range_object.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range_object.cpp
new file mode 100644
index 00000000..97373d3b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range_object.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create two JSON objects
+    json j1 = {{"one", "eins"}, {"two", "zwei"}};
+    json j2 = {{"eleven", "elf"}, {"seventeen", "siebzehn"}};
+
+    // output objects
+    std::cout << j1 << '\n';
+    std::cout << j2 << '\n';
+
+    // insert range from j2 to j1
+    j1.insert(j2.begin(), j2.end());
+
+    // output result of insert call
+    std::cout << j1 << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range_object.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range_object.output
new file mode 100644
index 00000000..a5985158
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/insert__range_object.output
@@ -0,0 +1,3 @@
+{"one":"eins","two":"zwei"}
+{"eleven":"elf","seventeen":"siebzehn"}
+{"eleven":"elf","one":"eins","seventeen":"siebzehn","two":"zwei"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/invalid_iterator.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/invalid_iterator.cpp
new file mode 100644
index 00000000..ecde12e6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/invalid_iterator.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    try
+    {
+        // calling iterator::key() on non-object iterator
+        json j = "string";
+        json::iterator it = j.begin();
+        auto k = it.key();
+    }
+    catch (const json::invalid_iterator& e)
+    {
+        // output exception information
+        std::cout << "message: " << e.what() << '\n'
+                  << "exception id: " << e.id << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/invalid_iterator.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/invalid_iterator.output
new file mode 100644
index 00000000..8668c16d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/invalid_iterator.output
@@ -0,0 +1,2 @@
+message: [json.exception.invalid_iterator.207] cannot use key() for non-object iterators
+exception id: 207
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_array.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_array.cpp
new file mode 100644
index 00000000..8ecc4503
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_array.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_array()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_array() << '\n';
+    std::cout << j_boolean.is_array() << '\n';
+    std::cout << j_number_integer.is_array() << '\n';
+    std::cout << j_number_unsigned_integer.is_array() << '\n';
+    std::cout << j_number_float.is_array() << '\n';
+    std::cout << j_object.is_array() << '\n';
+    std::cout << j_array.is_array() << '\n';
+    std::cout << j_string.is_array() << '\n';
+    std::cout << j_binary.is_array() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_array.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_array.output
new file mode 100644
index 00000000..7b7ef3f1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_array.output
@@ -0,0 +1,9 @@
+false
+false
+false
+false
+false
+false
+true
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_binary.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_binary.cpp
new file mode 100644
index 00000000..d7f049ec
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_binary.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_binary()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_binary() << '\n';
+    std::cout << j_boolean.is_binary() << '\n';
+    std::cout << j_number_integer.is_binary() << '\n';
+    std::cout << j_number_unsigned_integer.is_binary() << '\n';
+    std::cout << j_number_float.is_binary() << '\n';
+    std::cout << j_object.is_binary() << '\n';
+    std::cout << j_array.is_binary() << '\n';
+    std::cout << j_string.is_binary() << '\n';
+    std::cout << j_binary.is_binary() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_binary.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_binary.output
new file mode 100644
index 00000000..505e76e4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_binary.output
@@ -0,0 +1,9 @@
+false
+false
+false
+false
+false
+false
+false
+false
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_boolean.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_boolean.cpp
new file mode 100644
index 00000000..0b798195
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_boolean.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_boolean()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_boolean() << '\n';
+    std::cout << j_boolean.is_boolean() << '\n';
+    std::cout << j_number_integer.is_boolean() << '\n';
+    std::cout << j_number_unsigned_integer.is_boolean() << '\n';
+    std::cout << j_number_float.is_boolean() << '\n';
+    std::cout << j_object.is_boolean() << '\n';
+    std::cout << j_array.is_boolean() << '\n';
+    std::cout << j_string.is_boolean() << '\n';
+    std::cout << j_binary.is_boolean() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_boolean.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_boolean.output
new file mode 100644
index 00000000..eace89d2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_boolean.output
@@ -0,0 +1,9 @@
+false
+true
+false
+false
+false
+false
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_discarded.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_discarded.cpp
new file mode 100644
index 00000000..09016655
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_discarded.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_discarded()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_discarded() << '\n';
+    std::cout << j_boolean.is_discarded() << '\n';
+    std::cout << j_number_integer.is_discarded() << '\n';
+    std::cout << j_number_unsigned_integer.is_discarded() << '\n';
+    std::cout << j_number_float.is_discarded() << '\n';
+    std::cout << j_object.is_discarded() << '\n';
+    std::cout << j_array.is_discarded() << '\n';
+    std::cout << j_string.is_discarded() << '\n';
+    std::cout << j_binary.is_discarded() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_discarded.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_discarded.output
new file mode 100644
index 00000000..14718f64
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_discarded.output
@@ -0,0 +1,9 @@
+false
+false
+false
+false
+false
+false
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_null.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_null.cpp
new file mode 100644
index 00000000..8a843326
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_null.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_null()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_null() << '\n';
+    std::cout << j_boolean.is_null() << '\n';
+    std::cout << j_number_integer.is_null() << '\n';
+    std::cout << j_number_unsigned_integer.is_null() << '\n';
+    std::cout << j_number_float.is_null() << '\n';
+    std::cout << j_object.is_null() << '\n';
+    std::cout << j_array.is_null() << '\n';
+    std::cout << j_string.is_null() << '\n';
+    std::cout << j_binary.is_null() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_null.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_null.output
new file mode 100644
index 00000000..42bbee2a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_null.output
@@ -0,0 +1,9 @@
+true
+false
+false
+false
+false
+false
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number.cpp
new file mode 100644
index 00000000..f107a048
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_number()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_number() << '\n';
+    std::cout << j_boolean.is_number() << '\n';
+    std::cout << j_number_integer.is_number() << '\n';
+    std::cout << j_number_unsigned_integer.is_number() << '\n';
+    std::cout << j_number_float.is_number() << '\n';
+    std::cout << j_object.is_number() << '\n';
+    std::cout << j_array.is_number() << '\n';
+    std::cout << j_string.is_number() << '\n';
+    std::cout << j_binary.is_number() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number.output
new file mode 100644
index 00000000..53ef340b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number.output
@@ -0,0 +1,9 @@
+false
+false
+true
+true
+true
+false
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_float.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_float.cpp
new file mode 100644
index 00000000..bba2b446
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_float.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_number_float()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_number_float() << '\n';
+    std::cout << j_boolean.is_number_float() << '\n';
+    std::cout << j_number_integer.is_number_float() << '\n';
+    std::cout << j_number_unsigned_integer.is_number_float() << '\n';
+    std::cout << j_number_float.is_number_float() << '\n';
+    std::cout << j_object.is_number_float() << '\n';
+    std::cout << j_array.is_number_float() << '\n';
+    std::cout << j_string.is_number_float() << '\n';
+    std::cout << j_binary.is_number_float() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_float.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_float.output
new file mode 100644
index 00000000..0e64601a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_float.output
@@ -0,0 +1,9 @@
+false
+false
+false
+false
+true
+false
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_integer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_integer.cpp
new file mode 100644
index 00000000..8d6a5ae1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_integer.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_number_integer()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_number_integer() << '\n';
+    std::cout << j_boolean.is_number_integer() << '\n';
+    std::cout << j_number_integer.is_number_integer() << '\n';
+    std::cout << j_number_unsigned_integer.is_number_integer() << '\n';
+    std::cout << j_number_float.is_number_integer() << '\n';
+    std::cout << j_object.is_number_integer() << '\n';
+    std::cout << j_array.is_number_integer() << '\n';
+    std::cout << j_string.is_number_integer() << '\n';
+    std::cout << j_binary.is_number_integer() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_integer.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_integer.output
new file mode 100644
index 00000000..c1df310f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_integer.output
@@ -0,0 +1,9 @@
+false
+false
+true
+true
+false
+false
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_unsigned.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_unsigned.cpp
new file mode 100644
index 00000000..b52ac6b3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_unsigned.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_number_unsigned()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_number_unsigned() << '\n';
+    std::cout << j_boolean.is_number_unsigned() << '\n';
+    std::cout << j_number_integer.is_number_unsigned() << '\n';
+    std::cout << j_number_unsigned_integer.is_number_unsigned() << '\n';
+    std::cout << j_number_float.is_number_unsigned() << '\n';
+    std::cout << j_object.is_number_unsigned() << '\n';
+    std::cout << j_array.is_number_unsigned() << '\n';
+    std::cout << j_string.is_number_unsigned() << '\n';
+    std::cout << j_binary.is_number_unsigned() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_unsigned.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_unsigned.output
new file mode 100644
index 00000000..e6059d48
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_number_unsigned.output
@@ -0,0 +1,9 @@
+false
+false
+false
+true
+false
+false
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_object.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_object.cpp
new file mode 100644
index 00000000..a0216fd2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_object.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_object()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_object() << '\n';
+    std::cout << j_boolean.is_object() << '\n';
+    std::cout << j_number_integer.is_object() << '\n';
+    std::cout << j_number_unsigned_integer.is_object() << '\n';
+    std::cout << j_number_float.is_object() << '\n';
+    std::cout << j_object.is_object() << '\n';
+    std::cout << j_array.is_object() << '\n';
+    std::cout << j_string.is_object() << '\n';
+    std::cout << j_binary.is_object() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_object.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_object.output
new file mode 100644
index 00000000..d9a429f8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_object.output
@@ -0,0 +1,9 @@
+false
+false
+false
+false
+false
+true
+false
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_primitive.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_primitive.cpp
new file mode 100644
index 00000000..af3968e8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_primitive.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_primitive()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_primitive() << '\n';
+    std::cout << j_boolean.is_primitive() << '\n';
+    std::cout << j_number_integer.is_primitive() << '\n';
+    std::cout << j_number_unsigned_integer.is_primitive() << '\n';
+    std::cout << j_number_float.is_primitive() << '\n';
+    std::cout << j_object.is_primitive() << '\n';
+    std::cout << j_array.is_primitive() << '\n';
+    std::cout << j_string.is_primitive() << '\n';
+    std::cout << j_binary.is_primitive() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_primitive.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_primitive.output
new file mode 100644
index 00000000..77af24c0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_primitive.output
@@ -0,0 +1,9 @@
+true
+true
+true
+true
+true
+false
+false
+true
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_string.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_string.cpp
new file mode 100644
index 00000000..c89f550b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_string.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_string()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_string() << '\n';
+    std::cout << j_boolean.is_string() << '\n';
+    std::cout << j_number_integer.is_string() << '\n';
+    std::cout << j_number_unsigned_integer.is_string() << '\n';
+    std::cout << j_number_float.is_string() << '\n';
+    std::cout << j_object.is_string() << '\n';
+    std::cout << j_array.is_string() << '\n';
+    std::cout << j_string.is_string() << '\n';
+    std::cout << j_binary.is_string() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_string.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_string.output
new file mode 100644
index 00000000..6446f187
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_string.output
@@ -0,0 +1,9 @@
+false
+false
+false
+false
+false
+false
+false
+true
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_structured.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_structured.cpp
new file mode 100644
index 00000000..41947b1b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_structured.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_number_unsigned_integer = 12345678987654321u;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+    json j_binary = json::binary({1, 2, 3});
+
+    // call is_structured()
+    std::cout << std::boolalpha;
+    std::cout << j_null.is_structured() << '\n';
+    std::cout << j_boolean.is_structured() << '\n';
+    std::cout << j_number_integer.is_structured() << '\n';
+    std::cout << j_number_unsigned_integer.is_structured() << '\n';
+    std::cout << j_number_float.is_structured() << '\n';
+    std::cout << j_object.is_structured() << '\n';
+    std::cout << j_array.is_structured() << '\n';
+    std::cout << j_string.is_structured() << '\n';
+    std::cout << j_binary.is_structured() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_structured.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_structured.output
new file mode 100644
index 00000000..625c124b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/is_structured.output
@@ -0,0 +1,9 @@
+false
+false
+false
+false
+false
+true
+true
+false
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/items.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/items.cpp
new file mode 100644
index 00000000..9cd2b51b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/items.cpp
@@ -0,0 +1,23 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+
+    // example for an object
+    for (auto& x : j_object.items())
+    {
+        std::cout << "key: " << x.key() << ", value: " << x.value() << '\n';
+    }
+
+    // example for an array
+    for (auto& x : j_array.items())
+    {
+        std::cout << "key: " << x.key() << ", value: " << x.value() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/items.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/items.output
new file mode 100644
index 00000000..89b09f52
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/items.output
@@ -0,0 +1,7 @@
+key: one, value: 1
+key: two, value: 2
+key: 0, value: 1
+key: 1, value: 2
+key: 2, value: 4
+key: 3, value: 8
+key: 4, value: 16
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_base_class_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_base_class_t.cpp
new file mode 100644
index 00000000..d993522a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_base_class_t.cpp
@@ -0,0 +1,88 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+class visitor_adaptor_with_metadata
+{
+  public:
+    template <class Fnc>
+    void visit(const Fnc& fnc) const;
+
+    int metadata = 42;
+  private:
+    template <class Ptr, class Fnc>
+    void do_visit(const Ptr& ptr, const Fnc& fnc) const;
+};
+
+using json = nlohmann::basic_json <
+             std::map,
+             std::vector,
+             std::string,
+             bool,
+             std::int64_t,
+             std::uint64_t,
+             double,
+             std::allocator,
+             nlohmann::adl_serializer,
+             std::vector<std::uint8_t>,
+             visitor_adaptor_with_metadata
+             >;
+
+template <class Fnc>
+void visitor_adaptor_with_metadata::visit(const Fnc& fnc) const
+{
+    do_visit(json::json_pointer{}, fnc);
+}
+
+template <class Ptr, class Fnc>
+void visitor_adaptor_with_metadata::do_visit(const Ptr& ptr, const Fnc& fnc) const
+{
+    using value_t = nlohmann::detail::value_t;
+    const json& j = *static_cast<const json*>(this);
+    switch (j.type())
+    {
+        case value_t::object:
+            fnc(ptr, j);
+            for (const auto& entry : j.items())
+            {
+                entry.value().do_visit(ptr / entry.key(), fnc);
+            }
+            break;
+        case value_t::array:
+            fnc(ptr, j);
+            for (std::size_t i = 0; i < j.size(); ++i)
+            {
+                j.at(i).do_visit(ptr / std::to_string(i), fnc);
+            }
+            break;
+        case value_t::null:
+        case value_t::string:
+        case value_t::boolean:
+        case value_t::number_integer:
+        case value_t::number_unsigned:
+        case value_t::number_float:
+        case value_t::binary:
+            fnc(ptr, j);
+            break;
+        case value_t::discarded:
+        default:
+            break;
+    }
+}
+
+int main()
+{
+    // create a json object
+    json j;
+    j["null"];
+    j["object"]["uint"] = 1U;
+    j["object"].metadata = 21;
+
+    // visit and output
+    j.visit(
+        [&](const json::json_pointer & p,
+            const json & j)
+    {
+        std::cout << (p.empty() ? std::string{"/"} : p.to_string())
+                  << " - metadata = " << j.metadata << " -> " << j.dump() << '\n';
+    });
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_base_class_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_base_class_t.output
new file mode 100644
index 00000000..83ce1f69
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_base_class_t.output
@@ -0,0 +1,4 @@
+/ - metadata = 42 -> {"null":null,"object":{"uint":1}}
+/null - metadata = 42 -> null
+/object - metadata = 21 -> {"uint":1}
+/object/uint - metadata = 42 -> 1
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_lines.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_lines.cpp
new file mode 100644
index 00000000..233c81a4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_lines.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // JSON Lines (see https://jsonlines.org)
+    std::stringstream input;
+    input << R"({"name": "Gilbert", "wins": [["straight", "7♣"], ["one pair", "10♥"]]}
+{"name": "Alexa", "wins": [["two pair", "4♠"], ["two pair", "9♠"]]}
+{"name": "May", "wins": []}
+{"name": "Deloise", "wins": [["three of a kind", "5♣"]]}
+)";
+
+    std::string line;
+    while (std::getline(input, line))
+    {
+        std::cout << json::parse(line) << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_lines.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_lines.output
new file mode 100644
index 00000000..1b412248
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_lines.output
@@ -0,0 +1,4 @@
+{"name":"Gilbert","wins":[["straight","7♣"],["one pair","10♥"]]}
+{"name":"Alexa","wins":[["two pair","4♠"],["two pair","9♠"]]}
+{"name":"May","wins":[]}
+{"name":"Deloise","wins":[["three of a kind","5♣"]]}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer.cpp
new file mode 100644
index 00000000..8705cf49
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer.cpp
@@ -0,0 +1,47 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // correct JSON pointers
+    json::json_pointer p1;
+    json::json_pointer p2("");
+    json::json_pointer p3("/");
+    json::json_pointer p4("//");
+    json::json_pointer p5("/foo/bar");
+    json::json_pointer p6("/foo/bar/-");
+    json::json_pointer p7("/foo/~0");
+    json::json_pointer p8("/foo/~1");
+
+    // error: JSON pointer does not begin with a slash
+    try
+    {
+        json::json_pointer p9("foo");
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // error: JSON pointer uses escape symbol ~ not followed by 0 or 1
+    try
+    {
+        json::json_pointer p10("/foo/~");
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+
+    // error: JSON pointer uses escape symbol ~ not followed by 0 or 1
+    try
+    {
+        json::json_pointer p11("/foo/~3");
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer.output
new file mode 100644
index 00000000..9e027d6d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer.output
@@ -0,0 +1,3 @@
+[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'
+[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'
+[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__back.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__back.cpp
new file mode 100644
index 00000000..dd3b210b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__back.cpp
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON Pointers
+    json::json_pointer ptr1("/foo");
+    json::json_pointer ptr2("/foo/0");
+
+    // call empty()
+    std::cout << "last reference token of \"" << ptr1 << "\" is \"" << ptr1.back() << "\"\n"
+              << "last reference token of \"" << ptr2 << "\" is \"" << ptr2.back() << "\"" << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__back.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__back.output
new file mode 100644
index 00000000..a89357b4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__back.output
@@ -0,0 +1,2 @@
+last reference token of "/foo" is "foo"
+last reference token of "/foo/0" is "0"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__empty.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__empty.cpp
new file mode 100644
index 00000000..57257e8b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__empty.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON Pointers
+    json::json_pointer ptr0;
+    json::json_pointer ptr1("");
+    json::json_pointer ptr2("/foo");
+    json::json_pointer ptr3("/foo/0");
+
+    // call empty()
+    std::cout << std::boolalpha
+              << "\"" << ptr0 << "\": " << ptr0.empty() << '\n'
+              << "\"" << ptr1 << "\": " << ptr1.empty() << '\n'
+              << "\"" << ptr2 << "\": " << ptr2.empty() << '\n'
+              << "\"" << ptr3 << "\": " << ptr3.empty() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__empty.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__empty.output
new file mode 100644
index 00000000..a7ee49c1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__empty.output
@@ -0,0 +1,4 @@
+"": true
+"": true
+"/foo": false
+"/foo/0": false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal.cpp
new file mode 100644
index 00000000..dce6df03
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON pointers
+    json::json_pointer ptr0;
+    json::json_pointer ptr1("");
+    json::json_pointer ptr2("/foo");
+
+    // compare JSON pointers
+    std::cout << std::boolalpha
+              << "\"" << ptr0 << "\" == \"" << ptr0 << "\": " << (ptr0 == ptr0) << '\n'
+              << "\"" << ptr0 << "\" == \"" << ptr1 << "\": " << (ptr0 == ptr1) << '\n'
+              << "\"" << ptr1 << "\" == \"" << ptr2 << "\": " << (ptr1 == ptr2) << '\n'
+              << "\"" << ptr2 << "\" == \"" << ptr2 << "\": " << (ptr2 == ptr2) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal.output
new file mode 100644
index 00000000..9a761258
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal.output
@@ -0,0 +1,4 @@
+"" == "": true
+"" == "": true
+"" == "/foo": false
+"/foo" == "/foo": true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal_stringtype.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal_stringtype.cpp
new file mode 100644
index 00000000..af8ec5a2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal_stringtype.cpp
@@ -0,0 +1,33 @@
+#include <exception>
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON pointers
+    json::json_pointer ptr0;
+    json::json_pointer ptr1("");
+    json::json_pointer ptr2("/foo");
+
+    // different strings
+    std::string str0("");
+    std::string str1("/foo");
+    std::string str2("bar");
+
+    // compare JSON pointers and strings
+    std::cout << std::boolalpha
+              << "\"" << ptr0 << "\" == \"" << str0 << "\": " << (ptr0 == str0) << '\n'
+              << "\"" << str0 << "\" == \"" << ptr1 << "\": " << (str0 == ptr1) << '\n'
+              << "\"" << ptr2 << "\" == \"" << str1 << "\": " << (ptr2 == str1) << std::endl;
+
+    try
+    {
+        std::cout << "\"" << str2 << "\" == \"" << ptr2 << "\": " << (str2 == ptr2) << std::endl;
+    }
+    catch (const json::parse_error& ex)
+    {
+        std::cout << ex.what() << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal_stringtype.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal_stringtype.output
new file mode 100644
index 00000000..7fb299d3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__equal_stringtype.output
@@ -0,0 +1,4 @@
+"" == "": true
+"" == "": true
+"/foo" == "/foo": true
+"bar" == "/foo": [json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'bar'
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal.cpp
new file mode 100644
index 00000000..9bbdd531
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON pointers
+    json::json_pointer ptr0;
+    json::json_pointer ptr1("");
+    json::json_pointer ptr2("/foo");
+
+    // compare JSON pointers
+    std::cout << std::boolalpha
+              << "\"" << ptr0 << "\" != \"" << ptr0 << "\": " << (ptr0 != ptr0) << '\n'
+              << "\"" << ptr0 << "\" != \"" << ptr1 << "\": " << (ptr0 != ptr1) << '\n'
+              << "\"" << ptr1 << "\" != \"" << ptr2 << "\": " << (ptr1 != ptr2) << '\n'
+              << "\"" << ptr2 << "\" != \"" << ptr2 << "\": " << (ptr2 != ptr2) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal.output
new file mode 100644
index 00000000..de891f0c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal.output
@@ -0,0 +1,4 @@
+"" != "": false
+"" != "": false
+"" != "/foo": true
+"/foo" != "/foo": false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal_stringtype.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal_stringtype.cpp
new file mode 100644
index 00000000..b9b89872
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal_stringtype.cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON pointers
+    json::json_pointer ptr0;
+    json::json_pointer ptr1("");
+    json::json_pointer ptr2("/foo");
+
+    // different strings
+    std::string str0("");
+    std::string str1("/foo");
+    std::string str2("bar");
+
+    // compare JSON pointers and strings
+    std::cout << std::boolalpha
+              << "\"" << ptr0 << "\" != \"" << str0 << "\": " << (ptr0 != str0) << '\n'
+              << "\"" << str0 << "\" != \"" << ptr1 << "\": " << (str0 != ptr1) << '\n'
+              << "\"" << ptr2 << "\" != \"" << str1 << "\": " << (ptr2 != str1) << std::endl;
+
+    try
+    {
+        std::cout << "\"" << str2 << "\" != \"" << ptr2 << "\": " << (str2 != ptr2) << std::endl;
+    }
+    catch (const json::parse_error& ex)
+    {
+        std::cout << ex.what() << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal_stringtype.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal_stringtype.output
new file mode 100644
index 00000000..61331b75
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator__notequal_stringtype.output
@@ -0,0 +1,4 @@
+"" != "": false
+"" != "": false
+"/foo" != "/foo": false
+"bar" != "/foo": [json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'bar'
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add.cpp
new file mode 100644
index 00000000..14bd7456
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add.cpp
@@ -0,0 +1,23 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON pointer
+    json::json_pointer ptr("/foo");
+    std::cout << "\"" << ptr << "\"\n";
+
+    // append a JSON Pointer
+    ptr /= json::json_pointer("/bar/baz");
+    std::cout << "\"" << ptr << "\"\n";
+
+    // append a string
+    ptr /= "fob";
+    std::cout << "\"" << ptr << "\"\n";
+
+    // append an array index
+    ptr /= 42;
+    std::cout << "\"" << ptr << "\"" << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add.output
new file mode 100644
index 00000000..ae13afe2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add.output
@@ -0,0 +1,4 @@
+"/foo"
+"/foo/bar/baz"
+"/foo/bar/baz/fob"
+"/foo/bar/baz/fob/42"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add_binary.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add_binary.cpp
new file mode 100644
index 00000000..d26a0d17
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add_binary.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON pointer
+    json::json_pointer ptr("/foo");
+
+    // append a JSON Pointer
+    std::cout << "\"" << ptr / json::json_pointer("/bar/baz") << "\"\n";
+
+    // append a string
+    std::cout << "\"" << ptr / "fob" << "\"\n";
+
+    // append an array index
+    std::cout << "\"" << ptr / 42 << "\"" << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add_binary.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add_binary.output
new file mode 100644
index 00000000..7536042c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_add_binary.output
@@ -0,0 +1,3 @@
+"/foo/bar/baz"
+"/foo/fob"
+"/foo/42"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_string_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_string_t.cpp
new file mode 100644
index 00000000..56f21302
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_string_t.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON Pointers
+    json::json_pointer ptr1("/foo/0");
+    json::json_pointer ptr2("/a~1b");
+
+    // implicit conversion to string
+    std::string s;
+    s += ptr1;
+    s += "\n";
+    s += ptr2;
+
+    std::cout << s << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_string_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_string_t.output
new file mode 100644
index 00000000..ec6aba2c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__operator_string_t.output
@@ -0,0 +1,2 @@
+/foo/0
+/a~1b
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__parent_pointer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__parent_pointer.cpp
new file mode 100644
index 00000000..ef9df453
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__parent_pointer.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON Pointers
+    json::json_pointer ptr1("");
+    json::json_pointer ptr2("/foo");
+    json::json_pointer ptr3("/foo/0");
+
+    // call parent_pointer()
+    std::cout << std::boolalpha
+              << "parent of \"" << ptr1 << "\" is \"" << ptr1.parent_pointer() << "\"\n"
+              << "parent of \"" << ptr2 << "\" is \"" << ptr2.parent_pointer() << "\"\n"
+              << "parent of \"" << ptr3 << "\" is \"" << ptr3.parent_pointer() << "\"" << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__parent_pointer.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__parent_pointer.output
new file mode 100644
index 00000000..4cc6f3f1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__parent_pointer.output
@@ -0,0 +1,3 @@
+parent of "" is ""
+parent of "/foo" is ""
+parent of "/foo/0" is "/foo"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__pop_back.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__pop_back.cpp
new file mode 100644
index 00000000..fd077b7e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__pop_back.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create empty JSON Pointer
+    json::json_pointer ptr("/foo/bar/baz");
+    std::cout << "\"" << ptr << "\"\n";
+
+    // call pop_back()
+    ptr.pop_back();
+    std::cout << "\"" << ptr << "\"\n";
+
+    ptr.pop_back();
+    std::cout << "\"" << ptr << "\"\n";
+
+    ptr.pop_back();
+    std::cout << "\"" << ptr << "\"\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__pop_back.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__pop_back.output
new file mode 100644
index 00000000..b0468dc5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__pop_back.output
@@ -0,0 +1,4 @@
+"/foo/bar/baz"
+"/foo/bar"
+"/foo"
+""
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__push_back.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__push_back.cpp
new file mode 100644
index 00000000..e6b59a12
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__push_back.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create empty JSON Pointer
+    json::json_pointer ptr;
+    std::cout << "\"" << ptr << "\"\n";
+
+    // call push_back()
+    ptr.push_back("foo");
+    std::cout << "\"" << ptr << "\"\n";
+
+    ptr.push_back("0");
+    std::cout << "\"" << ptr << "\"\n";
+
+    ptr.push_back("bar");
+    std::cout << "\"" << ptr << "\"\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__push_back.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__push_back.output
new file mode 100644
index 00000000..92c019cd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__push_back.output
@@ -0,0 +1,4 @@
+""
+"/foo"
+"/foo/0"
+"/foo/0/bar"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__string_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__string_t.cpp
new file mode 100644
index 00000000..fbe0f179
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__string_t.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    json::json_pointer::string_t s = "This is a string.";
+
+    std::cout << s << std::endl;
+
+    std::cout << std::boolalpha << std::is_same<json::json_pointer::string_t, json::string_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__string_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__string_t.output
new file mode 100644
index 00000000..d8711372
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__string_t.output
@@ -0,0 +1,2 @@
+This is a string.
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__to_string.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__to_string.cpp
new file mode 100644
index 00000000..31d35a72
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__to_string.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON Pointers
+    json::json_pointer ptr1("");
+    json::json_pointer ptr2("/foo");
+    json::json_pointer ptr3("/foo/0");
+    json::json_pointer ptr4("/");
+    json::json_pointer ptr5("/a~1b");
+    json::json_pointer ptr6("/c%d");
+    json::json_pointer ptr7("/e^f");
+    json::json_pointer ptr8("/g|h");
+    json::json_pointer ptr9("/i\\j");
+    json::json_pointer ptr10("/k\"l");
+    json::json_pointer ptr11("/ ");
+    json::json_pointer ptr12("/m~0n");
+
+    std::cout << "\"" << ptr1.to_string() << "\"\n"
+              << "\"" << ptr2.to_string() << "\"\n"
+              << "\"" << ptr3.to_string() << "\"\n"
+              << "\"" << ptr4.to_string() << "\"\n"
+              << "\"" << ptr5.to_string() << "\"\n"
+              << "\"" << ptr6.to_string() << "\"\n"
+              << "\"" << ptr7.to_string() << "\"\n"
+              << "\"" << ptr8.to_string() << "\"\n"
+              << "\"" << ptr9.to_string() << "\"\n"
+              << "\"" << ptr10.to_string() << "\"\n"
+              << "\"" << ptr11.to_string() << "\"\n"
+              << "\"" << ptr12.to_string() << "\"" << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__to_string.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__to_string.output
new file mode 100644
index 00000000..3c441357
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/json_pointer__to_string.output
@@ -0,0 +1,12 @@
+""
+"/foo"
+"/foo/0"
+"/"
+"/a~1b"
+"/c%d"
+"/e^f"
+"/g|h"
+"/i\j"
+"/k"l"
+"/ "
+"/m~0n"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/max_size.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/max_size.cpp
new file mode 100644
index 00000000..c2ffc546
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/max_size.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+
+    // call max_size()
+    std::cout << j_null.max_size() << '\n';
+    std::cout << j_boolean.max_size() << '\n';
+    std::cout << j_number_integer.max_size() << '\n';
+    std::cout << j_number_float.max_size() << '\n';
+    std::cout << j_object.max_size() << '\n';
+    std::cout << j_array.max_size() << '\n';
+    std::cout << j_string.max_size() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/max_size.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/max_size.output
new file mode 100644
index 00000000..b8dcb4d0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/max_size.output
@@ -0,0 +1,7 @@
+0
+1
+1
+1
+115292150460684697
+576460752303423487
+1
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/merge_patch.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/merge_patch.cpp
new file mode 100644
index 00000000..f3fee1ed
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/merge_patch.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+#include <iomanip> // for std::setw
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // the original document
+    json document = R"({
+                "title": "Goodbye!",
+                "author": {
+                    "givenName": "John",
+                    "familyName": "Doe"
+                },
+                "tags": [
+                    "example",
+                    "sample"
+                ],
+                "content": "This will be unchanged"
+            })"_json;
+
+    // the patch
+    json patch = R"({
+                "title": "Hello!",
+                "phoneNumber": "+01-123-456-7890",
+                "author": {
+                    "familyName": null
+                },
+                "tags": [
+                    "example"
+                ]
+            })"_json;
+
+    // apply the patch
+    document.merge_patch(patch);
+
+    // output original and patched document
+    std::cout << std::setw(4) << document << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/merge_patch.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/merge_patch.output
new file mode 100644
index 00000000..96adb7b3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/merge_patch.output
@@ -0,0 +1,11 @@
+{
+    "author": {
+        "givenName": "John"
+    },
+    "content": "This will be unchanged",
+    "phoneNumber": "+01-123-456-7890",
+    "tags": [
+        "example"
+    ],
+    "title": "Hello!"
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/meta.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/meta.cpp
new file mode 100644
index 00000000..a051575b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/meta.cpp
@@ -0,0 +1,11 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // call meta()
+    std::cout << std::setw(4) << json::meta() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/meta.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/meta.output
new file mode 100644
index 00000000..90390f96
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/meta.output
@@ -0,0 +1,17 @@
+{
+    "compiler": {
+        "c++": "201103",
+        "family": "gcc",
+        "version": "12.3.0"
+    },
+    "copyright": "(C) 2013-2022 Niels Lohmann",
+    "name": "JSON for Modern C++",
+    "platform": "apple",
+    "url": "https://github.com/nlohmann/json",
+    "version": {
+        "major": 3,
+        "minor": 11,
+        "patch": 3,
+        "string": "3.11.3"
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_explicit.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_explicit.cpp
new file mode 100644
index 00000000..de79bd37
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_explicit.cpp
@@ -0,0 +1,60 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+class person
+{
+  private:
+    std::string name = "John Doe";
+    std::string address = "123 Fake St";
+    int age = -1;
+
+  public:
+    person() = default;
+    person(std::string name_, std::string address_, int age_)
+        : name(std::move(name_)), address(std::move(address_)), age(age_)
+    {}
+
+    friend void to_json(nlohmann::json& nlohmann_json_j, const person& nlohmann_json_t)
+    {
+        nlohmann_json_j["name"] = nlohmann_json_t.name;
+        nlohmann_json_j["address"] = nlohmann_json_t.address;
+        nlohmann_json_j["age"] = nlohmann_json_t.age;
+    }
+
+    friend void from_json(const nlohmann::json& nlohmann_json_j, person& nlohmann_json_t)
+    {
+        nlohmann_json_t.name = nlohmann_json_j.at("name");
+        nlohmann_json_t.address = nlohmann_json_j.at("address");
+        nlohmann_json_t.age = nlohmann_json_j.at("age");
+    }
+};
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+
+    // deserialization: json -> person
+    json j2 = R"({"address": "742 Evergreen Terrace", "age": 40, "name": "Homer Simpson"})"_json;
+    auto p2 = j2.template get<ns::person>();
+
+    // incomplete deserialization:
+    json j3 = R"({"address": "742 Evergreen Terrace", "name": "Maggie Simpson"})"_json;
+    try
+    {
+        auto p3 = j3.template get<ns::person>();
+    }
+    catch (const json::exception& e)
+    {
+        std::cout << "deserialization failed: " << e.what() << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_explicit.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_explicit.output
new file mode 100644
index 00000000..37f4eb41
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_explicit.output
@@ -0,0 +1,2 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+deserialization failed: [json.exception.out_of_range.403] key 'age' not found
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_macro.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_macro.cpp
new file mode 100644
index 00000000..4ecd4294
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_macro.cpp
@@ -0,0 +1,48 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+class person
+{
+  private:
+    std::string name = "John Doe";
+    std::string address = "123 Fake St";
+    int age = -1;
+
+  public:
+    person() = default;
+    person(std::string name_, std::string address_, int age_)
+        : name(std::move(name_)), address(std::move(address_)), age(age_)
+    {}
+
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE(person, name, address, age)
+};
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+
+    // deserialization: json -> person
+    json j2 = R"({"address": "742 Evergreen Terrace", "age": 40, "name": "Homer Simpson"})"_json;
+    auto p2 = j2.template get<ns::person>();
+
+    // incomplete deserialization:
+    json j3 = R"({"address": "742 Evergreen Terrace", "name": "Maggie Simpson"})"_json;
+    try
+    {
+        auto p3 = j3.template get<ns::person>();
+    }
+    catch (const json::exception& e)
+    {
+        std::cout << "deserialization failed: " << e.what() << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_macro.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_macro.output
new file mode 100644
index 00000000..37f4eb41
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_macro.output
@@ -0,0 +1,2 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+deserialization failed: [json.exception.out_of_range.403] key 'age' not found
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_explicit.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_explicit.cpp
new file mode 100644
index 00000000..ea422beb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_explicit.cpp
@@ -0,0 +1,38 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+class person
+{
+  private:
+    std::string name = "John Doe";
+    std::string address = "123 Fake St";
+    int age = -1;
+
+  public:
+    // No default constructor
+    person(std::string name_, std::string address_, int age_)
+        : name(std::move(name_)), address(std::move(address_)), age(age_)
+    {}
+
+    friend void to_json(nlohmann::json& nlohmann_json_j, const person& nlohmann_json_t)
+    {
+        nlohmann_json_j["name"] = nlohmann_json_t.name;
+        nlohmann_json_j["address"] = nlohmann_json_t.address;
+        nlohmann_json_j["age"] = nlohmann_json_t.age;
+    }
+};
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_explicit.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_explicit.output
new file mode 100644
index 00000000..12f50330
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_explicit.output
@@ -0,0 +1 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_macro.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_macro.cpp
new file mode 100644
index 00000000..8213f906
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_macro.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+class person
+{
+  private:
+    std::string name = "John Doe";
+    std::string address = "123 Fake St";
+    int age = -1;
+
+  public:
+    // No default constructor
+    person(std::string name_, std::string address_, int age_)
+        : name(std::move(name_)), address(std::move(address_)), age(age_)
+    {}
+
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE(person, name, address, age)
+};
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_macro.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_macro.output
new file mode 100644
index 00000000..12f50330
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_only_serialize_macro.output
@@ -0,0 +1 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_explicit.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_explicit.cpp
new file mode 100644
index 00000000..0fb2e1cb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_explicit.cpp
@@ -0,0 +1,55 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+class person
+{
+  private:
+    std::string name = "John Doe";
+    std::string address = "123 Fake St";
+    int age = -1;
+
+  public:
+    person() = default;
+    person(std::string name_, std::string address_, int age_)
+        : name(std::move(name_)), address(std::move(address_)), age(age_)
+    {}
+
+    friend void to_json(nlohmann::json& nlohmann_json_j, const person& nlohmann_json_t)
+    {
+        nlohmann_json_j["name"] = nlohmann_json_t.name;
+        nlohmann_json_j["address"] = nlohmann_json_t.address;
+        nlohmann_json_j["age"] = nlohmann_json_t.age;
+    }
+
+    friend void from_json(const nlohmann::json& nlohmann_json_j, person& nlohmann_json_t)
+    {
+        person nlohmann_json_default_obj;
+        nlohmann_json_t.name = nlohmann_json_j.value("name", nlohmann_json_default_obj.name);
+        nlohmann_json_t.address = nlohmann_json_j.value("address", nlohmann_json_default_obj.address);
+        nlohmann_json_t.age = nlohmann_json_j.value("age", nlohmann_json_default_obj.age);
+    }
+};
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+
+    // deserialization: json -> person
+    json j2 = R"({"address": "742 Evergreen Terrace", "age": 40, "name": "Homer Simpson"})"_json;
+    auto p2 = j2.template get<ns::person>();
+
+    // incomplete deserialization:
+    json j3 = R"({"address": "742 Evergreen Terrace", "name": "Maggie Simpson"})"_json;
+    auto p3 = j3.template get<ns::person>();
+    std::cout << "roundtrip: " << json(p3) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_explicit.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_explicit.output
new file mode 100644
index 00000000..1a255f65
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_explicit.output
@@ -0,0 +1,2 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+roundtrip: {"address":"742 Evergreen Terrace","age":-1,"name":"Maggie Simpson"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_macro.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_macro.cpp
new file mode 100644
index 00000000..52668516
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_macro.cpp
@@ -0,0 +1,42 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+class person
+{
+  private:
+    std::string name = "John Doe";
+    std::string address = "123 Fake St";
+    int age = -1;
+
+  public:
+    person() = default;
+    person(std::string name_, std::string address_, int age_)
+        : name(std::move(name_)), address(std::move(address_)), age(age_)
+    {}
+
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(person, name, address, age)
+};
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+
+    // deserialization: json -> person
+    json j2 = R"({"address": "742 Evergreen Terrace", "age": 40, "name": "Homer Simpson"})"_json;
+    auto p2 = j2.template get<ns::person>();
+
+    // incomplete deserialization:
+    json j3 = R"({"address": "742 Evergreen Terrace", "name": "Maggie Simpson"})"_json;
+    auto p3 = j3.template get<ns::person>();
+    std::cout << "roundtrip: " << json(p3) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_macro.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_macro.output
new file mode 100644
index 00000000..1a255f65
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_intrusive_with_default_macro.output
@@ -0,0 +1,2 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+roundtrip: {"address":"742 Evergreen Terrace","age":-1,"name":"Maggie Simpson"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_explicit.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_explicit.cpp
new file mode 100644
index 00000000..a31a7eb8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_explicit.cpp
@@ -0,0 +1,53 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+struct person
+{
+    std::string name;
+    std::string address;
+    int age;
+};
+
+void to_json(nlohmann::json& nlohmann_json_j, const person& nlohmann_json_t)
+{
+    nlohmann_json_j["name"] = nlohmann_json_t.name;
+    nlohmann_json_j["address"] = nlohmann_json_t.address;
+    nlohmann_json_j["age"] = nlohmann_json_t.age;
+}
+
+void from_json(const nlohmann::json& nlohmann_json_j, person& nlohmann_json_t)
+{
+    nlohmann_json_t.name = nlohmann_json_j.at("name");
+    nlohmann_json_t.address = nlohmann_json_j.at("address");
+    nlohmann_json_t.age = nlohmann_json_j.at("age");
+}
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+
+    // deserialization: json -> person
+    json j2 = R"({"address": "742 Evergreen Terrace", "age": 40, "name": "Homer Simpson"})"_json;
+    auto p2 = j2.template get<ns::person>();
+
+    // incomplete deserialization:
+    json j3 = R"({"address": "742 Evergreen Terrace", "name": "Maggie Simpson"})"_json;
+    try
+    {
+        auto p3 = j3.template get<ns::person>();
+    }
+    catch (const json::exception& e)
+    {
+        std::cout << "deserialization failed: " << e.what() << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_explicit.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_explicit.output
new file mode 100644
index 00000000..37f4eb41
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_explicit.output
@@ -0,0 +1,2 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+deserialization failed: [json.exception.out_of_range.403] key 'age' not found
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_macro.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_macro.cpp
new file mode 100644
index 00000000..d11691b7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_macro.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+struct person
+{
+    std::string name;
+    std::string address;
+    int age;
+};
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(person, name, address, age)
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+
+    // deserialization: json -> person
+    json j2 = R"({"address": "742 Evergreen Terrace", "age": 40, "name": "Homer Simpson"})"_json;
+    auto p2 = j2.template get<ns::person>();
+
+    // incomplete deserialization:
+    json j3 = R"({"address": "742 Evergreen Terrace", "name": "Maggie Simpson"})"_json;
+    try
+    {
+        auto p3 = j3.template get<ns::person>();
+    }
+    catch (const json::exception& e)
+    {
+        std::cout << "deserialization failed: " << e.what() << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_macro.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_macro.output
new file mode 100644
index 00000000..37f4eb41
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_macro.output
@@ -0,0 +1,2 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+deserialization failed: [json.exception.out_of_range.403] key 'age' not found
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_explicit.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_explicit.cpp
new file mode 100644
index 00000000..8890e03a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_explicit.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+struct person
+{
+    std::string name;
+    std::string address;
+    int age;
+};
+
+void to_json(nlohmann::json& nlohmann_json_j, const person& nlohmann_json_t)
+{
+    nlohmann_json_j["name"] = nlohmann_json_t.name;
+    nlohmann_json_j["address"] = nlohmann_json_t.address;
+    nlohmann_json_j["age"] = nlohmann_json_t.age;
+}
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_explicit.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_explicit.output
new file mode 100644
index 00000000..12f50330
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_explicit.output
@@ -0,0 +1 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_macro.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_macro.cpp
new file mode 100644
index 00000000..7aef23af
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_macro.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+struct person
+{
+    std::string name;
+    std::string address;
+    int age;
+};
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(person, name, address, age)
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_macro.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_macro.output
new file mode 100644
index 00000000..12f50330
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_only_serialize_macro.output
@@ -0,0 +1 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_explicit.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_explicit.cpp
new file mode 100644
index 00000000..855ab52b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_explicit.cpp
@@ -0,0 +1,53 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+struct person
+{
+    std::string name = "John Doe";
+    std::string address = "123 Fake St";
+    int age = -1;
+
+    person() = default;
+    person(std::string name_, std::string address_, int age_)
+        : name(std::move(name_)), address(std::move(address_)), age(age_)
+    {}
+};
+
+void to_json(nlohmann::json& nlohmann_json_j, const person& nlohmann_json_t)
+{
+    nlohmann_json_j["name"] = nlohmann_json_t.name;
+    nlohmann_json_j["address"] = nlohmann_json_t.address;
+    nlohmann_json_j["age"] = nlohmann_json_t.age;
+}
+
+void from_json(const nlohmann::json& nlohmann_json_j, person& nlohmann_json_t)
+{
+    person nlohmann_json_default_obj;
+    nlohmann_json_t.name = nlohmann_json_j.value("name", nlohmann_json_default_obj.name);
+    nlohmann_json_t.address = nlohmann_json_j.value("address", nlohmann_json_default_obj.address);
+    nlohmann_json_t.age = nlohmann_json_j.value("age", nlohmann_json_default_obj.age);
+}
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+
+    // deserialization: json -> person
+    json j2 = R"({"address": "742 Evergreen Terrace", "age": 40, "name": "Homer Simpson"})"_json;
+    auto p2 = j2.template get<ns::person>();
+
+    // incomplete deserialization:
+    json j3 = R"({"address": "742 Evergreen Terrace", "name": "Maggie Simpson"})"_json;
+    auto p3 = j3.template get<ns::person>();
+    std::cout << "roundtrip: " << json(p3) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_explicit.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_explicit.output
new file mode 100644
index 00000000..1a255f65
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_explicit.output
@@ -0,0 +1,2 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+roundtrip: {"address":"742 Evergreen Terrace","age":-1,"name":"Maggie Simpson"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_macro.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_macro.cpp
new file mode 100644
index 00000000..8c41c65e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_macro.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+namespace ns
+{
+struct person
+{
+    std::string name = "John Doe";
+    std::string address = "123 Fake St";
+    int age = -1;
+
+    person() = default;
+    person(std::string name_, std::string address_, int age_)
+        : name(std::move(name_)), address(std::move(address_)), age(age_)
+    {}
+};
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(person, name, address, age)
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    // serialization: person -> json
+    json j = p;
+    std::cout << "serialization: " << j << std::endl;
+
+    // deserialization: json -> person
+    json j2 = R"({"address": "742 Evergreen Terrace", "age": 40, "name": "Homer Simpson"})"_json;
+    auto p2 = j2.template get<ns::person>();
+
+    // incomplete deserialization:
+    json j3 = R"({"address": "742 Evergreen Terrace", "name": "Maggie Simpson"})"_json;
+    auto p3 = j3.template get<ns::person>();
+    std::cout << "roundtrip: " << json(p3) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_macro.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_macro.output
new file mode 100644
index 00000000..1a255f65
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_define_type_non_intrusive_with_default_macro.output
@@ -0,0 +1,2 @@
+serialization: {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+roundtrip: {"address":"742 Evergreen Terrace","age":-1,"name":"Maggie Simpson"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace.cpp
new file mode 100644
index 00000000..4bad91f4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace.cpp
@@ -0,0 +1,14 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+// possible use case: use NLOHMANN_JSON_NAMESPACE instead of nlohmann
+using json = NLOHMANN_JSON_NAMESPACE::json;
+
+// macro needed to output the NLOHMANN_JSON_NAMESPACE as string literal
+#define Q(x) #x
+#define QUOTE(x) Q(x)
+
+int main()
+{
+    std::cout << QUOTE(NLOHMANN_JSON_NAMESPACE) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace.output
new file mode 100644
index 00000000..5565deaf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace.output
@@ -0,0 +1 @@
+nlohmann::json_abi_v3_11_3
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_begin.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_begin.c++17.cpp
new file mode 100644
index 00000000..9385d593
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_begin.c++17.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+#include <optional>
+#include <nlohmann/json.hpp>
+
+// partial specialization (see https://json.nlohmann.me/features/arbitrary_types/)
+NLOHMANN_JSON_NAMESPACE_BEGIN
+template <typename T>
+struct adl_serializer<std::optional<T>>
+{
+    static void to_json(json& j, const std::optional<T>& opt)
+    {
+        if (opt == std::nullopt)
+        {
+            j = nullptr;
+        }
+        else
+        {
+            j = *opt;
+        }
+    }
+};
+NLOHMANN_JSON_NAMESPACE_END
+
+int main()
+{
+    std::optional<int> o1 = 1;
+    std::optional<int> o2 = std::nullopt;
+
+    NLOHMANN_JSON_NAMESPACE::json j;
+    j.push_back(o1);
+    j.push_back(o2);
+    std::cout << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_begin.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_begin.c++17.output
new file mode 100644
index 00000000..b29d3b93
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_begin.c++17.output
@@ -0,0 +1 @@
+[1,null]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_no_version.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_no_version.cpp
new file mode 100644
index 00000000..97948dd7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_no_version.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+
+#define NLOHMANN_JSON_NAMESPACE_NO_VERSION 1
+#include <nlohmann/json.hpp>
+
+// macro needed to output the NLOHMANN_JSON_NAMESPACE as string literal
+#define Q(x) #x
+#define QUOTE(x) Q(x)
+
+int main()
+{
+    std::cout << QUOTE(NLOHMANN_JSON_NAMESPACE) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_no_version.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_no_version.output
new file mode 100644
index 00000000..1c8f3132
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_namespace_no_version.output
@@ -0,0 +1 @@
+nlohmann::json_abi
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum.cpp
new file mode 100644
index 00000000..a40db49e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum.cpp
@@ -0,0 +1,59 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+namespace ns
+{
+enum TaskState
+{
+    TS_STOPPED,
+    TS_RUNNING,
+    TS_COMPLETED,
+    TS_INVALID = -1
+};
+
+NLOHMANN_JSON_SERIALIZE_ENUM(TaskState,
+{
+    { TS_INVALID, nullptr },
+    { TS_STOPPED, "stopped" },
+    { TS_RUNNING, "running" },
+    { TS_COMPLETED, "completed" }
+})
+
+enum class Color
+{
+    red, green, blue, unknown
+};
+
+NLOHMANN_JSON_SERIALIZE_ENUM(Color,
+{
+    { Color::unknown, "unknown" }, { Color::red, "red" },
+    { Color::green, "green" }, { Color::blue, "blue" }
+})
+} // namespace ns
+
+int main()
+{
+    // serialization
+    json j_stopped = ns::TS_STOPPED;
+    json j_red = ns::Color::red;
+    std::cout << "ns::TS_STOPPED -> " << j_stopped
+              << ", ns::Color::red -> " << j_red << std::endl;
+
+    // deserialization
+    json j_running = "running";
+    json j_blue = "blue";
+    auto running = j_running.template get<ns::TaskState>();
+    auto blue = j_blue.template get<ns::Color>();
+    std::cout << j_running << " -> " << running
+              << ", " << j_blue << " -> " << static_cast<int>(blue) << std::endl;
+
+    // deserializing undefined JSON value to enum
+    // (where the first map entry above is the default)
+    json j_pi = 3.14;
+    auto invalid = j_pi.template get<ns::TaskState>();
+    auto unknown = j_pi.template get<ns::Color>();
+    std::cout << j_pi << " -> " << invalid << ", "
+              << j_pi << " -> " << static_cast<int>(unknown) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum.output
new file mode 100644
index 00000000..f512563d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum.output
@@ -0,0 +1,3 @@
+ns::TS_STOPPED -> "stopped", ns::Color::red -> "red"
+"running" -> 1, "blue" -> 2
+3.14 -> -1, 3.14 -> 3
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum_2.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum_2.cpp
new file mode 100644
index 00000000..b35e94cc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum_2.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+namespace ns
+{
+enum class Color
+{
+    red, green, blue, unknown
+};
+
+NLOHMANN_JSON_SERIALIZE_ENUM(Color,
+{
+    { Color::unknown, "unknown" }, { Color::red, "red" },
+    { Color::green, "green" }, { Color::blue, "blue" },
+    { Color::red, "rot" } // a second conversion for Color::red
+})
+}
+
+int main()
+{
+    // serialization
+    json j_red = ns::Color::red;
+    std::cout << static_cast<int>(ns::Color::red) << " -> " << j_red << std::endl;
+
+    // deserialization
+    json j_rot = "rot";
+    auto rot = j_rot.template get<ns::Color>();
+    auto red = j_red.template get<ns::Color>();
+    std::cout << j_rot << " -> " << static_cast<int>(rot) << std::endl;
+    std::cout << j_red << " -> " << static_cast<int>(red) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum_2.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum_2.output
new file mode 100644
index 00000000..5dec31b4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_serialize_enum_2.output
@@ -0,0 +1,3 @@
+0 -> "red"
+"rot" -> 0
+"red" -> 0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_version.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_version.cpp
new file mode 100644
index 00000000..ca5f5372
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_version.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << "JSON for Modern C++ version "
+              << NLOHMANN_JSON_VERSION_MAJOR << "."
+              << NLOHMANN_JSON_VERSION_MINOR << "."
+              << NLOHMANN_JSON_VERSION_PATCH << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_version.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_version.output
new file mode 100644
index 00000000..75dbe847
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/nlohmann_json_version.output
@@ -0,0 +1 @@
+JSON for Modern C++ version 3.11.3
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_float_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_float_t.cpp
new file mode 100644
index 00000000..21211dc5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_float_t.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha << std::is_same<double, json::number_float_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_float_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_float_t.output
new file mode 100644
index 00000000..27ba77dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_float_t.output
@@ -0,0 +1 @@
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_integer_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_integer_t.cpp
new file mode 100644
index 00000000..75ee57b6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_integer_t.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha << std::is_same<std::int64_t, json::number_integer_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_integer_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_integer_t.output
new file mode 100644
index 00000000..27ba77dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_integer_t.output
@@ -0,0 +1 @@
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_unsigned_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_unsigned_t.cpp
new file mode 100644
index 00000000..ff3b86df
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_unsigned_t.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha << std::is_same<std::uint64_t, json::number_unsigned_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_unsigned_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_unsigned_t.output
new file mode 100644
index 00000000..27ba77dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/number_unsigned_t.output
@@ -0,0 +1 @@
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object.cpp
new file mode 100644
index 00000000..ad167d4a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object.cpp
@@ -0,0 +1,28 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON objects
+    json j_no_init_list = json::object();
+    json j_empty_init_list = json::object({});
+    json j_list_of_pairs = json::object({ {"one", 1}, {"two", 2} });
+
+    // serialize the JSON objects
+    std::cout << j_no_init_list << '\n';
+    std::cout << j_empty_init_list << '\n';
+    std::cout << j_list_of_pairs << '\n';
+
+    // example for an exception
+    try
+    {
+        // can only create an object from a list of pairs
+        json j_invalid_object = json::object({{ "one", 1, 2 }});
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object.output
new file mode 100644
index 00000000..1a1d8140
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object.output
@@ -0,0 +1,4 @@
+{}
+{}
+{"one":1,"two":2}
+[json.exception.type_error.301] cannot create object from initializer list
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_comparator_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_comparator_t.cpp
new file mode 100644
index 00000000..6b82c7ca
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_comparator_t.cpp
@@ -0,0 +1,11 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha
+              << "json::object_comparator_t(\"one\", \"two\") = " << json::object_comparator_t{}("one", "two") << "\n"
+              << "json::object_comparator_t(\"three\", \"four\") = " << json::object_comparator_t{}("three", "four") << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_comparator_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_comparator_t.output
new file mode 100644
index 00000000..63620edb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_comparator_t.output
@@ -0,0 +1,2 @@
+json::object_comparator_t("one", "two") = true
+json::object_comparator_t("three", "four") = false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_t.cpp
new file mode 100644
index 00000000..85cfa3e3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_t.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha << std::is_same<std::map<json::string_t, json>, json::object_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_t.output
new file mode 100644
index 00000000..27ba77dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/object_t.output
@@ -0,0 +1 @@
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__ValueType.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__ValueType.cpp
new file mode 100644
index 00000000..e8a1d349
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__ValueType.cpp
@@ -0,0 +1,60 @@
+#include <iostream>
+#include <unordered_map>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON value with different types
+    json json_types =
+    {
+        {"boolean", true},
+        {
+            "number", {
+                {"integer", 42},
+                {"floating-point", 17.23}
+            }
+        },
+        {"string", "Hello, world!"},
+        {"array", {1, 2, 3, 4, 5}},
+        {"null", nullptr}
+    };
+
+    // use implicit conversions
+    bool v1 = json_types["boolean"];
+    int v2 = json_types["number"]["integer"];
+    short v3 = json_types["number"]["integer"];
+    float v4 = json_types["number"]["floating-point"];
+    int v5 = json_types["number"]["floating-point"];
+    std::string v6 = json_types["string"];
+    std::vector<short> v7 = json_types["array"];
+    std::unordered_map<std::string, json> v8 = json_types;
+
+    // print the conversion results
+    std::cout << v1 << '\n';
+    std::cout << v2 << ' ' << v3 << '\n';
+    std::cout << v4 << ' ' << v5 << '\n';
+    std::cout << v6 << '\n';
+
+    for (auto i : v7)
+    {
+        std::cout << i << ' ';
+    }
+    std::cout << "\n\n";
+
+    for (auto i : v8)
+    {
+        std::cout << i.first << ": " << i.second << '\n';
+    }
+
+    // example for an exception
+    try
+    {
+        bool v1 = json_types["string"];
+    }
+    catch (const json::type_error& e)
+    {
+        std::cout << e.what() << '\n';
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__ValueType.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__ValueType.output
new file mode 100644
index 00000000..a3bd9fff
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__ValueType.output
@@ -0,0 +1,12 @@
+1
+42 42
+17.23 17
+Hello, world!
+1 2 3 4 5 
+
+string: "Hello, world!"
+number: {"floating-point":17.23,"integer":42}
+null: null
+boolean: true
+array: [1,2,3,4,5]
+[json.exception.type_error.302] type must be boolean, but is string
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal.cpp
new file mode 100644
index 00000000..1426f489
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create several JSON values
+    json array_1 = {1, 2, 3};
+    json array_2 = {1, 2, 4};
+    json object_1 = {{"A", "a"}, {"B", "b"}};
+    json object_2 = {{"B", "b"}, {"A", "a"}};
+    json number_1 = 17;
+    json number_2 = 17.000000000000001L;
+    json string_1 = "foo";
+    json string_2 = "bar";
+
+    // output values and comparisons
+    std::cout << std::boolalpha;
+    std::cout << array_1 << " == " << array_2 << " " << (array_1 == array_2) << '\n';
+    std::cout << object_1 << " == " << object_2 << " " << (object_1 == object_2) << '\n';
+    std::cout << number_1 << " == " << number_2 << " " << (number_1 == number_2) << '\n';
+    std::cout << string_1 << " == " << string_2 << " " << (string_1 == string_2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal.output
new file mode 100644
index 00000000..78067355
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal.output
@@ -0,0 +1,4 @@
+[1,2,3] == [1,2,4] false
+{"A":"a","B":"b"} == {"A":"a","B":"b"} true
+17 == 17.0 true
+"foo" == "bar" false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__nullptr_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__nullptr_t.cpp
new file mode 100644
index 00000000..dbb21037
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__nullptr_t.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create several JSON values
+    json array = {1, 2, 3};
+    json object = {{"A", "a"}, {"B", "b"}};
+    json number = 17;
+    json string = "foo";
+    json null;
+
+    // output values and comparisons
+    std::cout << std::boolalpha;
+    std::cout << array << " == nullptr " << (array == nullptr) << '\n';
+    std::cout << object << " == nullptr " << (object == nullptr) << '\n';
+    std::cout << number << " == nullptr " << (number == nullptr) << '\n';
+    std::cout << string << " == nullptr " << (string == nullptr) << '\n';
+    std::cout << null << " == nullptr " << (null == nullptr) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__nullptr_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__nullptr_t.output
new file mode 100644
index 00000000..b7128e13
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__nullptr_t.output
@@ -0,0 +1,5 @@
+[1,2,3] == nullptr false
+{"A":"a","B":"b"} == nullptr false
+17 == nullptr false
+"foo" == nullptr false
+null == nullptr true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__specializations.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__specializations.cpp
new file mode 100644
index 00000000..97d5ecea
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__specializations.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    nlohmann::json uj1 = {{"version", 1}, {"type", "integer"}};
+    nlohmann::json uj2 = {{"type", "integer"}, {"version", 1}};
+
+    nlohmann::ordered_json oj1 = {{"version", 1}, {"type", "integer"}};
+    nlohmann::ordered_json oj2 = {{"type", "integer"}, {"version", 1}};
+
+    std::cout << std::boolalpha << (uj1 == uj2) << '\n' << (oj1 == oj2) << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__specializations.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__specializations.output
new file mode 100644
index 00000000..da29283a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__equal__specializations.output
@@ -0,0 +1,2 @@
+true
+false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greater.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greater.cpp
new file mode 100644
index 00000000..65bb9c04
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greater.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create several JSON values
+    json array_1 = {1, 2, 3};
+    json array_2 = {1, 2, 4};
+    json object_1 = {{"A", "a"}, {"B", "b"}};
+    json object_2 = {{"B", "b"}, {"A", "a"}};
+    json number_1 = 17;
+    json number_2 = 17.0000000000001L;
+    json string_1 = "foo";
+    json string_2 = "bar";
+
+    // output values and comparisons
+    std::cout << std::boolalpha;
+    std::cout << array_1 << " > " << array_2 << " " << (array_1 > array_2) << '\n';
+    std::cout << object_1 << " > " << object_2 << " " << (object_1 > object_2) << '\n';
+    std::cout << number_1 << " > " << number_2 << " " << (number_1 > number_2) << '\n';
+    std::cout << string_1 << " > " << string_2 << " " << (string_1 > string_2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greater.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greater.output
new file mode 100644
index 00000000..910c48e3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greater.output
@@ -0,0 +1,4 @@
+[1,2,3] > [1,2,4] false
+{"A":"a","B":"b"} > {"A":"a","B":"b"} false
+17 > 17.0000000000001 false
+"foo" > "bar" true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greaterequal.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greaterequal.cpp
new file mode 100644
index 00000000..f8659ee0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greaterequal.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create several JSON values
+    json array_1 = {1, 2, 3};
+    json array_2 = {1, 2, 4};
+    json object_1 = {{"A", "a"}, {"B", "b"}};
+    json object_2 = {{"B", "b"}, {"A", "a"}};
+    json number_1 = 17;
+    json number_2 = 17.0000000000001L;
+    json string_1 = "foo";
+    json string_2 = "bar";
+
+    // output values and comparisons
+    std::cout << std::boolalpha;
+    std::cout << array_1 << " >= " << array_2 << " " << (array_1 >= array_2) << '\n';
+    std::cout << object_1 << " >= " << object_2 << " " << (object_1 >= object_2) << '\n';
+    std::cout << number_1 << " >= " << number_2 << " " << (number_1 >= number_2) << '\n';
+    std::cout << string_1 << " >= " << string_2 << " " << (string_1 >= string_2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greaterequal.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greaterequal.output
new file mode 100644
index 00000000..c7b91514
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__greaterequal.output
@@ -0,0 +1,4 @@
+[1,2,3] >= [1,2,4] false
+{"A":"a","B":"b"} >= {"A":"a","B":"b"} true
+17 >= 17.0000000000001 false
+"foo" >= "bar" true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__less.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__less.cpp
new file mode 100644
index 00000000..64209a22
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__less.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create several JSON values
+    json array_1 = {1, 2, 3};
+    json array_2 = {1, 2, 4};
+    json object_1 = {{"A", "a"}, {"B", "b"}};
+    json object_2 = {{"B", "b"}, {"A", "a"}};
+    json number_1 = 17;
+    json number_2 = 17.0000000000001L;
+    json string_1 = "foo";
+    json string_2 = "bar";
+
+    // output values and comparisons
+    std::cout << std::boolalpha;
+    std::cout << array_1 << " == " << array_2 << " " << (array_1 < array_2) << '\n';
+    std::cout << object_1 << " == " << object_2 << " " << (object_1 < object_2) << '\n';
+    std::cout << number_1 << " == " << number_2 << " " << (number_1 < number_2) << '\n';
+    std::cout << string_1 << " == " << string_2 << " " << (string_1 < string_2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__less.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__less.output
new file mode 100644
index 00000000..abbbc455
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__less.output
@@ -0,0 +1,4 @@
+[1,2,3] == [1,2,4] true
+{"A":"a","B":"b"} == {"A":"a","B":"b"} false
+17 == 17.0000000000001 true
+"foo" == "bar" false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__lessequal.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__lessequal.cpp
new file mode 100644
index 00000000..543b9543
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__lessequal.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create several JSON values
+    json array_1 = {1, 2, 3};
+    json array_2 = {1, 2, 4};
+    json object_1 = {{"A", "a"}, {"B", "b"}};
+    json object_2 = {{"B", "b"}, {"A", "a"}};
+    json number_1 = 17;
+    json number_2 = 17.0000000000001L;
+    json string_1 = "foo";
+    json string_2 = "bar";
+
+    // output values and comparisons
+    std::cout << std::boolalpha;
+    std::cout << array_1 << " <= " << array_2 << " " << (array_1 <= array_2) << '\n';
+    std::cout << object_1 << " <= " << object_2 << " " << (object_1 <= object_2) << '\n';
+    std::cout << number_1 << " <= " << number_2 << " " << (number_1 <= number_2) << '\n';
+    std::cout << string_1 << " <= " << string_2 << " " << (string_1 <= string_2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__lessequal.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__lessequal.output
new file mode 100644
index 00000000..f7f0327e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__lessequal.output
@@ -0,0 +1,4 @@
+[1,2,3] <= [1,2,4] true
+{"A":"a","B":"b"} <= {"A":"a","B":"b"} true
+17 <= 17.0000000000001 true
+"foo" <= "bar" false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal.cpp
new file mode 100644
index 00000000..43e89509
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create several JSON values
+    json array_1 = {1, 2, 3};
+    json array_2 = {1, 2, 4};
+    json object_1 = {{"A", "a"}, {"B", "b"}};
+    json object_2 = {{"B", "b"}, {"A", "a"}};
+    json number_1 = 17;
+    json number_2 = 17.000000000000001L;
+    json string_1 = "foo";
+    json string_2 = "bar";
+
+    // output values and comparisons
+    std::cout << std::boolalpha;
+    std::cout << array_1 << " != " << array_2 << " " << (array_1 != array_2) << '\n';
+    std::cout << object_1 << " != " << object_2 << " " << (object_1 != object_2) << '\n';
+    std::cout << number_1 << " != " << number_2 << " " << (number_1 != number_2) << '\n';
+    std::cout << string_1 << " != " << string_2 << " " << (string_1 != string_2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal.output
new file mode 100644
index 00000000..6cbc0e8e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal.output
@@ -0,0 +1,4 @@
+[1,2,3] != [1,2,4] true
+{"A":"a","B":"b"} != {"A":"a","B":"b"} false
+17 != 17.0 false
+"foo" != "bar" true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal__nullptr_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal__nullptr_t.cpp
new file mode 100644
index 00000000..dc7e6ac4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal__nullptr_t.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create several JSON values
+    json array = {1, 2, 3};
+    json object = {{"A", "a"}, {"B", "b"}};
+    json number = 17;
+    json string = "foo";
+    json null;
+
+    // output values and comparisons
+    std::cout << std::boolalpha;
+    std::cout << array << " != nullptr " << (array != nullptr) << '\n';
+    std::cout << object << " != nullptr " << (object != nullptr) << '\n';
+    std::cout << number << " != nullptr " << (number != nullptr) << '\n';
+    std::cout << string << " != nullptr " << (string != nullptr) << '\n';
+    std::cout << null << " != nullptr " << (null != nullptr) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal__nullptr_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal__nullptr_t.output
new file mode 100644
index 00000000..0fc36dcf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__notequal__nullptr_t.output
@@ -0,0 +1,5 @@
+[1,2,3] != nullptr true
+{"A":"a","B":"b"} != nullptr true
+17 != nullptr true
+"foo" != nullptr true
+null != nullptr false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__value_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__value_t.cpp
new file mode 100644
index 00000000..d9aac797
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__value_t.cpp
@@ -0,0 +1,38 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = -17;
+    json j_number_unsigned = 42u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+
+    // call operator value_t()
+    json::value_t t_null = j_null;
+    json::value_t t_boolean = j_boolean;
+    json::value_t t_number_integer = j_number_integer;
+    json::value_t t_number_unsigned = j_number_unsigned;
+    json::value_t t_number_float = j_number_float;
+    json::value_t t_object = j_object;
+    json::value_t t_array = j_array;
+    json::value_t t_string = j_string;
+
+    // print types
+    std::cout << std::boolalpha;
+    std::cout << (t_null == json::value_t::null) << '\n';
+    std::cout << (t_boolean == json::value_t::boolean) << '\n';
+    std::cout << (t_number_integer == json::value_t::number_integer) << '\n';
+    std::cout << (t_number_unsigned == json::value_t::number_unsigned) << '\n';
+    std::cout << (t_number_float == json::value_t::number_float) << '\n';
+    std::cout << (t_object == json::value_t::object) << '\n';
+    std::cout << (t_array == json::value_t::array) << '\n';
+    std::cout << (t_string == json::value_t::string) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__value_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__value_t.output
new file mode 100644
index 00000000..310e632a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator__value_t.output
@@ -0,0 +1,8 @@
+true
+true
+true
+true
+true
+true
+true
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer.cpp
new file mode 100644
index 00000000..0fa207f0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer.cpp
@@ -0,0 +1,49 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    json j =
+    {
+        {"number", 1}, {"string", "foo"}, {"array", {1, 2}}
+    };
+
+    // read-only access
+
+    // output element with JSON pointer "/number"
+    std::cout << j["/number"_json_pointer] << '\n';
+    // output element with JSON pointer "/string"
+    std::cout << j["/string"_json_pointer] << '\n';
+    // output element with JSON pointer "/array"
+    std::cout << j["/array"_json_pointer] << '\n';
+    // output element with JSON pointer "/array/1"
+    std::cout << j["/array/1"_json_pointer] << '\n';
+
+    // writing access
+
+    // change the string
+    j["/string"_json_pointer] = "bar";
+    // output the changed string
+    std::cout << j["string"] << '\n';
+
+    // "change" a nonexisting object entry
+    j["/boolean"_json_pointer] = true;
+    // output the changed object
+    std::cout << j << '\n';
+
+    // change an array element
+    j["/array/1"_json_pointer] = 21;
+    // "change" an array element with nonexisting index
+    j["/array/4"_json_pointer] = 44;
+    // output the changed array
+    std::cout << j["array"] << '\n';
+
+    // "change" the array element past the end
+    j["/array/-"_json_pointer] = 55;
+    // output the changed array
+    std::cout << j["array"] << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer.output
new file mode 100644
index 00000000..1fd1b032
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer.output
@@ -0,0 +1,8 @@
+1
+"foo"
+[1,2]
+2
+"bar"
+{"array":[1,2],"boolean":true,"number":1,"string":"bar"}
+[1,21,null,null,44]
+[1,21,null,null,44,55]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer_const.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer_const.cpp
new file mode 100644
index 00000000..f40e2494
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer_const.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    const json j =
+    {
+        {"number", 1}, {"string", "foo"}, {"array", {1, 2}}
+    };
+
+    // read-only access
+
+    // output element with JSON pointer "/number"
+    std::cout << j["/number"_json_pointer] << '\n';
+    // output element with JSON pointer "/string"
+    std::cout << j["/string"_json_pointer] << '\n';
+    // output element with JSON pointer "/array"
+    std::cout << j["/array"_json_pointer] << '\n';
+    // output element with JSON pointer "/array/1"
+    std::cout << j["/array/1"_json_pointer] << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer_const.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer_const.output
new file mode 100644
index 00000000..7b9306bb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__json_pointer_const.output
@@ -0,0 +1,4 @@
+1
+"foo"
+[1,2]
+2
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype.c++17.cpp
new file mode 100644
index 00000000..7f2b41dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype.c++17.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+#include <iomanip>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json object =
+    {
+        {"one", 1}, {"two", 2}, {"three", 2.9}
+    };
+
+    // output element with key "two"
+    std::cout << object["two"sv] << "\n\n";
+
+    // change element with key "three"
+    object["three"sv] = 3;
+
+    // output changed array
+    std::cout << std::setw(4) << object << "\n\n";
+
+    // mention nonexisting key
+    object["four"sv];
+
+    // write to nonexisting key
+    object["five"sv]["really"sv]["nested"sv] = true;
+
+    // output changed object
+    std::cout << std::setw(4) << object << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype.c++17.output
new file mode 100644
index 00000000..b643587f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype.c++17.output
@@ -0,0 +1,19 @@
+2
+
+{
+    "one": 1,
+    "three": 3,
+    "two": 2
+}
+
+{
+    "five": {
+        "really": {
+            "nested": true
+        }
+    },
+    "four": null,
+    "one": 1,
+    "three": 3,
+    "two": 2
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype_const.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype_const.c++17.cpp
new file mode 100644
index 00000000..2cf94f40
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype_const.c++17.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    const json object =
+    {
+        {"one", 1}, {"two", 2}, {"three", 2.9}
+    };
+
+    // output element with key "two"
+    std::cout << object["two"sv] << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype_const.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype_const.c++17.output
new file mode 100644
index 00000000..0cfbf088
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__keytype_const.c++17.output
@@ -0,0 +1 @@
+2
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type.cpp
new file mode 100644
index 00000000..f9b7f731
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type.cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    json object =
+    {
+        {"one", 1}, {"two", 2}, {"three", 2.9}
+    };
+
+    // output element with key "two"
+    std::cout << object["two"] << "\n\n";
+
+    // change element with key "three"
+    object["three"] = 3;
+
+    // output changed array
+    std::cout << std::setw(4) << object << "\n\n";
+
+    // mention nonexisting key
+    object["four"];
+
+    // write to nonexisting key
+    object["five"]["really"]["nested"] = true;
+
+    // output changed object
+    std::cout << std::setw(4) << object << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type.output
new file mode 100644
index 00000000..b643587f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type.output
@@ -0,0 +1,19 @@
+2
+
+{
+    "one": 1,
+    "three": 3,
+    "two": 2
+}
+
+{
+    "five": {
+        "really": {
+            "nested": true
+        }
+    },
+    "four": null,
+    "one": 1,
+    "three": 3,
+    "two": 2
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type_const.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type_const.cpp
new file mode 100644
index 00000000..1bdb3402
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type_const.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object
+    const json object =
+    {
+        {"one", 1}, {"two", 2}, {"three", 2.9}
+    };
+
+    // output element with key "two"
+    std::cout << object["two"] << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type_const.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type_const.output
new file mode 100644
index 00000000..0cfbf088
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__object_t_key_type_const.output
@@ -0,0 +1 @@
+2
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type.cpp
new file mode 100644
index 00000000..d6f3e153
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON array
+    json array = {1, 2, 3, 4, 5};
+
+    // output element at index 3 (fourth element)
+    std::cout << array[3] << '\n';
+
+    // change last element to 6
+    array[array.size() - 1] = 6;
+
+    // output changed array
+    std::cout << array << '\n';
+
+    // write beyond array limit
+    array[10] = 11;
+
+    // output changed array
+    std::cout << array << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type.output
new file mode 100644
index 00000000..a91a1069
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type.output
@@ -0,0 +1,3 @@
+4
+[1,2,3,4,6]
+[1,2,3,4,6,null,null,null,null,null,11]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type_const.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type_const.cpp
new file mode 100644
index 00000000..d56fa0a4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type_const.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON array
+    const json array = {"first", "2nd", "third", "fourth"};
+
+    // output element at index 2 (third element)
+    std::cout << array.at(2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type_const.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type_const.output
new file mode 100644
index 00000000..4450c9f0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_array__size_type_const.output
@@ -0,0 +1 @@
+"third"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_deserialize.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_deserialize.cpp
new file mode 100644
index 00000000..8e3d8bd8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_deserialize.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+#include <iomanip>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create stream with serialized JSON
+    std::stringstream ss;
+    ss << R"({
+        "number": 23,
+        "string": "Hello, world!",
+        "array": [1, 2, 3, 4, 5],
+        "boolean": false,
+        "null": null
+    })";
+
+    // create JSON value and read the serialization from the stream
+    json j;
+    ss >> j;
+
+    // serialize JSON
+    std::cout << std::setw(2) << j << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_deserialize.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_deserialize.output
new file mode 100644
index 00000000..81a203fb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_deserialize.output
@@ -0,0 +1,13 @@
+{
+  "array": [
+    1,
+    2,
+    3,
+    4,
+    5
+  ],
+  "boolean": false,
+  "null": null,
+  "number": 23,
+  "string": "Hello, world!"
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json.cpp
new file mode 100644
index 00000000..84ca6297
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    json j = R"( {"hello": "world", "answer": 42} )"_json;
+
+    std::cout << std::setw(2) << j << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json.output
new file mode 100644
index 00000000..6c0a7b34
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json.output
@@ -0,0 +1,4 @@
+{
+  "answer": 42,
+  "hello": "world"
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json_pointer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json_pointer.cpp
new file mode 100644
index 00000000..aba93e88
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json_pointer.cpp
@@ -0,0 +1,14 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    json j = R"( {"hello": "world", "answer": 42} )"_json;
+    auto val = j["/hello"_json_pointer];
+
+    std::cout << std::setw(2) << val << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json_pointer.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json_pointer.output
new file mode 100644
index 00000000..b0fcd347
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_literal_json_pointer.output
@@ -0,0 +1 @@
+"world"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__basic_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__basic_json.cpp
new file mode 100644
index 00000000..3bd4ad57
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__basic_json.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+
+    // serialize without indentation
+    std::cout << j_object << "\n\n";
+    std::cout << j_array << "\n\n";
+
+    // serialize with indentation
+    std::cout << std::setw(4) << j_object << "\n\n";
+    std::cout << std::setw(2) << j_array << "\n\n";
+    std::cout << std::setw(1) << std::setfill('\t') << j_object << "\n\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__basic_json.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__basic_json.output
new file mode 100644
index 00000000..7e86bfa2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__basic_json.output
@@ -0,0 +1,22 @@
+{"one":1,"two":2}
+
+[1,2,4,8,16]
+
+{
+    "one": 1,
+    "two": 2
+}
+
+[
+  1,
+  2,
+  4,
+  8,
+  16
+]
+
+{
+	"one": 1,
+	"two": 2
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__json_pointer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__json_pointer.cpp
new file mode 100644
index 00000000..f4fac886
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__json_pointer.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON poiner
+    json::json_pointer ptr("/foo/bar/baz");
+
+    // write string representation to stream
+    std::cout << ptr << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__json_pointer.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__json_pointer.output
new file mode 100644
index 00000000..ed359432
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_ltlt__json_pointer.output
@@ -0,0 +1 @@
+/foo/bar/baz
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__const_reference.c++20.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__const_reference.c++20.cpp
new file mode 100644
index 00000000..9e7c9e9b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__const_reference.c++20.cpp
@@ -0,0 +1,40 @@
+#include <compare>
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+const char* to_string(const std::partial_ordering& po)
+{
+    if (std::is_lt(po))
+    {
+        return "less";
+    }
+    else if (std::is_gt(po))
+    {
+        return "greater";
+    }
+    else if (std::is_eq(po))
+    {
+        return "equivalent";
+    }
+    return "unordered";
+}
+
+int main()
+{
+    // create several JSON values
+    json array_1 = {1, 2, 3};
+    json array_2 = {1, 2, 4};
+    json object_1 = {{"A", "a"}, {"B", "b"}};
+    json object_2 = {{"B", "b"}, {"A", "a"}};
+    json number = 17;
+    json string = "foo";
+    json discarded = json(json::value_t::discarded);
+
+    // output values and comparisons
+    std::cout << array_1 << " <=> " << array_2 << " := " << to_string(array_1 <=> array_2) << '\n'; // *NOPAD*
+    std::cout << object_1 << " <=> " << object_2 << " := " << to_string(object_1 <=> object_2) << '\n'; // *NOPAD*
+    std::cout << string << " <=> " << number << " := " << to_string(string <=> number) << '\n'; // *NOPAD*
+    std::cout << string << " <=> " << discarded << " := " << to_string(string <=> discarded) << '\n'; // *NOPAD*
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__const_reference.c++20.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__const_reference.c++20.output
new file mode 100644
index 00000000..2e8bf9f6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__const_reference.c++20.output
@@ -0,0 +1,4 @@
+[1,2,3] <=> [1,2,4] := less
+{"A":"a","B":"b"} <=> {"A":"a","B":"b"} := equivalent
+"foo" <=> 17 := greater
+"foo" <=> <discarded> := unordered
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__scalartype.c++20.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__scalartype.c++20.cpp
new file mode 100644
index 00000000..ebb5b434
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__scalartype.c++20.cpp
@@ -0,0 +1,40 @@
+#include <compare>
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+const char* to_string(const std::partial_ordering& po)
+{
+    if (std::is_lt(po))
+    {
+        return "less";
+    }
+    else if (std::is_gt(po))
+    {
+        return "greater";
+    }
+    else if (std::is_eq(po))
+    {
+        return "equivalent";
+    }
+    return "unordered";
+}
+
+int main()
+{
+    using float_limits = std::numeric_limits<json::number_float_t>;
+    constexpr auto nan = float_limits::quiet_NaN();
+
+    // create several JSON values
+    json boolean = false;
+    json number = 17;
+    json string = "17";
+
+    // output values and comparisons
+    std::cout << std::boolalpha << std::fixed;
+    std::cout << boolean << " <=> " << true << " := " << to_string(boolean <=> true) << '\n'; // *NOPAD*
+    std::cout << number << " <=> " << 17.0 << " := " << to_string(number <=> 17.0) << '\n'; // *NOPAD*
+    std::cout << number << " <=> " << nan << " := " << to_string(number <=> nan) << '\n'; // *NOPAD*
+    std::cout << string << " <=> " << 17 << " := " << to_string(string <=> 17) << '\n'; // *NOPAD*
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__scalartype.c++20.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__scalartype.c++20.output
new file mode 100644
index 00000000..b2939a5f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/operator_spaceship__scalartype.c++20.output
@@ -0,0 +1,4 @@
+false <=> true := less
+17 <=> 17.000000 := equivalent
+17 <=> nan := unordered
+"17" <=> 17 := greater
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_json.cpp
new file mode 100644
index 00000000..effad530
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_json.cpp
@@ -0,0 +1,14 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using ordered_json = nlohmann::ordered_json;
+
+int main()
+{
+    ordered_json j;
+    j["one"] = 1;
+    j["two"] = 2;
+    j["three"] = 3;
+
+    std::cout << j.dump(2) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_json.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_json.output
new file mode 100644
index 00000000..120cbb28
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_json.output
@@ -0,0 +1,5 @@
+{
+  "one": 1,
+  "two": 2,
+  "three": 3
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_map.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_map.cpp
new file mode 100644
index 00000000..dcc60cb5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_map.cpp
@@ -0,0 +1,43 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+// simple output function
+template<typename Map>
+void output(const char* prefix, const Map& m)
+{
+    std::cout << prefix << " = { ";
+    for (auto& element : m)
+    {
+        std::cout << element.first << ":" << element.second << ' ';
+    }
+    std::cout << "}" << std::endl;
+}
+
+int main()
+{
+    // create and fill two maps
+    nlohmann::ordered_map<std::string, std::string> m_ordered;
+    m_ordered["one"] = "eins";
+    m_ordered["two"] = "zwei";
+    m_ordered["three"] = "drei";
+
+    std::map<std::string, std::string> m_std;
+    m_std["one"] = "eins";
+    m_std["two"] = "zwei";
+    m_std["three"] = "drei";
+
+    // output: m_ordered is ordered by insertion order, m_std is ordered by key
+    output("m_ordered", m_ordered);
+    output("m_std", m_std);
+
+    // erase and re-add "one" key
+    m_ordered.erase("one");
+    m_ordered["one"] = "eins";
+
+    m_std.erase("one");
+    m_std["one"] = "eins";
+
+    // output: m_ordered shows newly added key at the end; m_std is again ordered by key
+    output("m_ordered", m_ordered);
+    output("m_std", m_std);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_map.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_map.output
new file mode 100644
index 00000000..a4ffc454
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/ordered_map.output
@@ -0,0 +1,4 @@
+m_ordered = { one:eins two:zwei three:drei }
+m_std = { one:eins three:drei two:zwei }
+m_ordered = { two:zwei three:drei one:eins }
+m_std = { one:eins three:drei two:zwei }
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/other_error.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/other_error.cpp
new file mode 100644
index 00000000..56aa8ae6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/other_error.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    try
+    {
+        // executing a failing JSON Patch operation
+        json value = R"({
+            "best_biscuit": {
+                "name": "Oreo"
+            }
+        })"_json;
+        json patch = R"([{
+            "op": "test",
+            "path": "/best_biscuit/name",
+            "value": "Choco Leibniz"
+        }])"_json;
+        value.patch(patch);
+    }
+    catch (const json::other_error& e)
+    {
+        // output exception information
+        std::cout << "message: " << e.what() << '\n'
+                  << "exception id: " << e.id << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/other_error.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/other_error.output
new file mode 100644
index 00000000..b80f1cb3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/other_error.output
@@ -0,0 +1,2 @@
+message: [json.exception.other_error.501] unsuccessful: {"op":"test","path":"/best_biscuit/name","value":"Choco Leibniz"}
+exception id: 501
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/out_of_range.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/out_of_range.cpp
new file mode 100644
index 00000000..03282082
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/out_of_range.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    try
+    {
+        // calling at() for an invalid index
+        json j = {1, 2, 3, 4};
+        j.at(4) = 10;
+    }
+    catch (const json::out_of_range& e)
+    {
+        // output exception information
+        std::cout << "message: " << e.what() << '\n'
+                  << "exception id: " << e.id << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/out_of_range.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/out_of_range.output
new file mode 100644
index 00000000..29ec76b3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/out_of_range.output
@@ -0,0 +1,2 @@
+message: [json.exception.out_of_range.401] array index 4 is out of range
+exception id: 401
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__allow_exceptions.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__allow_exceptions.cpp
new file mode 100644
index 00000000..f396c347
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__allow_exceptions.cpp
@@ -0,0 +1,36 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // an invalid JSON text
+    std::string text = R"(
+    {
+        "key": "value without closing quotes
+    }
+    )";
+
+    // parse with exceptions
+    try
+    {
+        json j = json::parse(text);
+    }
+    catch (const json::parse_error& e)
+    {
+        std::cout << e.what() << std::endl;
+    }
+
+    // parse without exceptions
+    json j = json::parse(text, nullptr, false);
+
+    if (j.is_discarded())
+    {
+        std::cout << "the input is invalid JSON" << std::endl;
+    }
+    else
+    {
+        std::cout << "the input is valid JSON: " << j << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__allow_exceptions.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__allow_exceptions.output
new file mode 100644
index 00000000..d650824d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__allow_exceptions.output
@@ -0,0 +1,2 @@
+[json.exception.parse_error.101] parse error at line 4, column 0: syntax error while parsing value - invalid string: control character U+000A (LF) must be escaped to \u000A or \n; last read: '"value without closing quotes<U+000A>'
+the input is invalid JSON
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__array__parser_callback_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__array__parser_callback_t.cpp
new file mode 100644
index 00000000..63f0a0e4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__array__parser_callback_t.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // a JSON text
+    char text[] = R"(
+    {
+        "Image": {
+            "Width":  800,
+            "Height": 600,
+            "Title":  "View from 15th Floor",
+            "Thumbnail": {
+                "Url":    "http://www.example.com/image/481989943",
+                "Height": 125,
+                "Width":  100
+            },
+            "Animated" : false,
+            "IDs": [116, 943, 234, 38793]
+        }
+    }
+    )";
+
+    // parse and serialize JSON
+    json j_complete = json::parse(text);
+    std::cout << std::setw(4) << j_complete << "\n\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__array__parser_callback_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__array__parser_callback_t.output
new file mode 100644
index 00000000..62bb8586
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__array__parser_callback_t.output
@@ -0,0 +1,20 @@
+{
+    "Image": {
+        "Animated": false,
+        "Height": 600,
+        "IDs": [
+            116,
+            943,
+            234,
+            38793
+        ],
+        "Thumbnail": {
+            "Height": 125,
+            "Url": "http://www.example.com/image/481989943",
+            "Width": 100
+        },
+        "Title": "View from 15th Floor",
+        "Width": 800
+    }
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__contiguouscontainer__parser_callback_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__contiguouscontainer__parser_callback_t.cpp
new file mode 100644
index 00000000..6eb409bb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__contiguouscontainer__parser_callback_t.cpp
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // a JSON text given as std::vector
+    std::vector<std::uint8_t> text = {'[', '1', ',', '2', ',', '3', ']', '\0'};
+
+    // parse and serialize JSON
+    json j_complete = json::parse(text);
+    std::cout << std::setw(4) << j_complete << "\n\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__contiguouscontainer__parser_callback_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__contiguouscontainer__parser_callback_t.output
new file mode 100644
index 00000000..74633e80
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__contiguouscontainer__parser_callback_t.output
@@ -0,0 +1,6 @@
+[
+    1,
+    2,
+    3
+]
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__istream__parser_callback_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__istream__parser_callback_t.cpp
new file mode 100644
index 00000000..2ef14dab
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__istream__parser_callback_t.cpp
@@ -0,0 +1,57 @@
+#include <iostream>
+#include <iomanip>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // a JSON text
+    auto text = R"(
+    {
+        "Image": {
+            "Width":  800,
+            "Height": 600,
+            "Title":  "View from 15th Floor",
+            "Thumbnail": {
+                "Url":    "http://www.example.com/image/481989943",
+                "Height": 125,
+                "Width":  100
+            },
+            "Animated" : false,
+            "IDs": [116, 943, 234, 38793]
+        }
+    }
+    )";
+
+    // fill a stream with JSON text
+    std::stringstream ss;
+    ss << text;
+
+    // parse and serialize JSON
+    json j_complete = json::parse(ss);
+    std::cout << std::setw(4) << j_complete << "\n\n";
+
+    // define parser callback
+    json::parser_callback_t cb = [](int depth, json::parse_event_t event, json & parsed)
+    {
+        // skip object elements with key "Thumbnail"
+        if (event == json::parse_event_t::key and parsed == json("Thumbnail"))
+        {
+            return false;
+        }
+        else
+        {
+            return true;
+        }
+    };
+
+    // fill a stream with JSON text
+    ss.clear();
+    ss << text;
+
+    // parse (with callback) and serialize JSON
+    json j_filtered = json::parse(ss, cb);
+    std::cout << std::setw(4) << j_filtered << '\n';
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__istream__parser_callback_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__istream__parser_callback_t.output
new file mode 100644
index 00000000..279a7ff7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__istream__parser_callback_t.output
@@ -0,0 +1,34 @@
+{
+    "Image": {
+        "Animated": false,
+        "Height": 600,
+        "IDs": [
+            116,
+            943,
+            234,
+            38793
+        ],
+        "Thumbnail": {
+            "Height": 125,
+            "Url": "http://www.example.com/image/481989943",
+            "Width": 100
+        },
+        "Title": "View from 15th Floor",
+        "Width": 800
+    }
+}
+
+{
+    "Image": {
+        "Animated": false,
+        "Height": 600,
+        "IDs": [
+            116,
+            943,
+            234,
+            38793
+        ],
+        "Title": "View from 15th Floor",
+        "Width": 800
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.cpp
new file mode 100644
index 00000000..d0c30c1a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.cpp
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // a JSON text given an input with other values
+    std::vector<std::uint8_t> input = {'[', '1', ',', '2', ',', '3', ']', 'o', 't', 'h', 'e', 'r'};
+
+    // parse and serialize JSON
+    json j_complete = json::parse(input.begin(), input.begin() + 7);
+    std::cout << std::setw(4) << j_complete << "\n\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.link b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.link
new file mode 100644
index 00000000..f464e54c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.link
@@ -0,0 +1 @@
+<a target="_blank" href="https://wandbox.org/permlink/hUJYo1HWmfTBLMGn"><b>online</b></a>
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.output
new file mode 100644
index 00000000..74633e80
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__iterator_pair.output
@@ -0,0 +1,6 @@
+[
+    1,
+    2,
+    3
+]
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.cpp
new file mode 100644
index 00000000..a5a16eea
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.cpp
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // a JSON text given as string that is not null-terminated
+    const char* ptr = "[1,2,3]another value";
+
+    // parse and serialize JSON
+    json j_complete = json::parse(ptr, ptr + 7);
+    std::cout << std::setw(4) << j_complete << "\n\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.link b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.link
new file mode 100644
index 00000000..9a93ef1c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.link
@@ -0,0 +1 @@
+<a target="_blank" href="https://wandbox.org/permlink/AWbpa8e1xRV3y4MM"><b>online</b></a>
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.output
new file mode 100644
index 00000000..74633e80
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__pointers.output
@@ -0,0 +1,6 @@
+[
+    1,
+    2,
+    3
+]
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__string__parser_callback_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__string__parser_callback_t.cpp
new file mode 100644
index 00000000..19c6c448
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__string__parser_callback_t.cpp
@@ -0,0 +1,48 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // a JSON text
+    auto text = R"(
+    {
+        "Image": {
+            "Width":  800,
+            "Height": 600,
+            "Title":  "View from 15th Floor",
+            "Thumbnail": {
+                "Url":    "http://www.example.com/image/481989943",
+                "Height": 125,
+                "Width":  100
+            },
+            "Animated" : false,
+            "IDs": [116, 943, 234, 38793]
+        }
+    }
+    )";
+
+    // parse and serialize JSON
+    json j_complete = json::parse(text);
+    std::cout << std::setw(4) << j_complete << "\n\n";
+
+    // define parser callback
+    json::parser_callback_t cb = [](int depth, json::parse_event_t event, json & parsed)
+    {
+        // skip object elements with key "Thumbnail"
+        if (event == json::parse_event_t::key and parsed == json("Thumbnail"))
+        {
+            return false;
+        }
+        else
+        {
+            return true;
+        }
+    };
+
+    // parse (with callback) and serialize JSON
+    json j_filtered = json::parse(text, cb);
+    std::cout << std::setw(4) << j_filtered << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__string__parser_callback_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__string__parser_callback_t.output
new file mode 100644
index 00000000..279a7ff7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse__string__parser_callback_t.output
@@ -0,0 +1,34 @@
+{
+    "Image": {
+        "Animated": false,
+        "Height": 600,
+        "IDs": [
+            116,
+            943,
+            234,
+            38793
+        ],
+        "Thumbnail": {
+            "Height": 125,
+            "Url": "http://www.example.com/image/481989943",
+            "Width": 100
+        },
+        "Title": "View from 15th Floor",
+        "Width": 800
+    }
+}
+
+{
+    "Image": {
+        "Animated": false,
+        "Height": 600,
+        "IDs": [
+            116,
+            943,
+            234,
+            38793
+        ],
+        "Title": "View from 15th Floor",
+        "Width": 800
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse_error.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse_error.cpp
new file mode 100644
index 00000000..ce15ebe2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse_error.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    try
+    {
+        // parsing input with a syntax error
+        json::parse("[1,2,3,]");
+    }
+    catch (const json::parse_error& e)
+    {
+        // output exception information
+        std::cout << "message: " << e.what() << '\n'
+                  << "exception id: " << e.id << '\n'
+                  << "byte position of error: " << e.byte << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse_error.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse_error.output
new file mode 100644
index 00000000..fe366ff8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/parse_error.output
@@ -0,0 +1,3 @@
+message: [json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal
+exception id: 101
+byte position of error: 8
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch.cpp
new file mode 100644
index 00000000..b7ecb8ee
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // the original document
+    json doc = R"(
+        {
+          "baz": "qux",
+          "foo": "bar"
+        }
+    )"_json;
+
+    // the patch
+    json patch = R"(
+        [
+          { "op": "replace", "path": "/baz", "value": "boo" },
+          { "op": "add", "path": "/hello", "value": ["world"] },
+          { "op": "remove", "path": "/foo"}
+        ]
+    )"_json;
+
+    // apply the patch
+    json patched_doc = doc.patch(patch);
+
+    // output original and patched document
+    std::cout << std::setw(4) << doc << "\n\n"
+              << std::setw(4) << patched_doc << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch.output
new file mode 100644
index 00000000..eb558fe2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch.output
@@ -0,0 +1,11 @@
+{
+    "baz": "qux",
+    "foo": "bar"
+}
+
+{
+    "baz": "boo",
+    "hello": [
+        "world"
+    ]
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch_inplace.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch_inplace.cpp
new file mode 100644
index 00000000..061708a2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch_inplace.cpp
@@ -0,0 +1,35 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // the original document
+    json doc = R"(
+        {
+          "baz": "qux",
+          "foo": "bar"
+        }
+    )"_json;
+
+    // the patch
+    json patch = R"(
+        [
+          { "op": "replace", "path": "/baz", "value": "boo" },
+          { "op": "add", "path": "/hello", "value": ["world"] },
+          { "op": "remove", "path": "/foo"}
+        ]
+    )"_json;
+
+    // output original document
+    std::cout << "Before\n" << std::setw(4) << doc << std::endl;
+
+    // apply the patch
+    doc.patch_inplace(patch);
+
+    // output patched document
+    std::cout << "\nAfter\n" << std::setw(4) << doc << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch_inplace.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch_inplace.output
new file mode 100644
index 00000000..9d31b8ba
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/patch_inplace.output
@@ -0,0 +1,13 @@
+Before
+{
+    "baz": "qux",
+    "foo": "bar"
+}
+
+After
+{
+    "baz": "boo",
+    "hello": [
+        "world"
+    ]
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back.cpp
new file mode 100644
index 00000000..bbddf4f5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json array = {1, 2, 3, 4, 5};
+    json null;
+
+    // print values
+    std::cout << array << '\n';
+    std::cout << null << '\n';
+
+    // add values
+    array.push_back(6);
+    array += 7;
+    null += "first";
+    null += "second";
+
+    // print values
+    std::cout << array << '\n';
+    std::cout << null << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back.output
new file mode 100644
index 00000000..3306b60e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back.output
@@ -0,0 +1,4 @@
+[1,2,3,4,5]
+null
+[1,2,3,4,5,6,7]
+["first","second"]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__initializer_list.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__initializer_list.cpp
new file mode 100644
index 00000000..e96645f1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__initializer_list.cpp
@@ -0,0 +1,27 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json object = {{"one", 1}, {"two", 2}};
+    json null;
+
+    // print values
+    std::cout << object << '\n';
+    std::cout << null << '\n';
+
+    // add values:
+    object.push_back({"three", 3});  // object is extended
+    object += {"four", 4};           // object is extended
+    null.push_back({"five", 5});     // null is converted to array
+
+    // print values
+    std::cout << object << '\n';
+    std::cout << null << '\n';
+
+    // would throw:
+    //object.push_back({1, 2, 3});
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__initializer_list.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__initializer_list.output
new file mode 100644
index 00000000..668eb25d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__initializer_list.output
@@ -0,0 +1,4 @@
+{"one":1,"two":2}
+null
+{"four":4,"one":1,"three":3,"two":2}
+[["five",5]]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__object_t__value.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__object_t__value.cpp
new file mode 100644
index 00000000..5d694e93
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__object_t__value.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json object = {{"one", 1}, {"two", 2}};
+    json null;
+
+    // print values
+    std::cout << object << '\n';
+    std::cout << null << '\n';
+
+    // add values
+    object.push_back(json::object_t::value_type("three", 3));
+    object += json::object_t::value_type("four", 4);
+    null += json::object_t::value_type("A", "a");
+    null += json::object_t::value_type("B", "b");
+
+    // print values
+    std::cout << object << '\n';
+    std::cout << null << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__object_t__value.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__object_t__value.output
new file mode 100644
index 00000000..b8a7d356
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/push_back__object_t__value.output
@@ -0,0 +1,4 @@
+{"one":1,"two":2}
+null
+{"four":4,"one":1,"three":3,"two":2}
+{"A":"a","B":"b"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rbegin.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rbegin.cpp
new file mode 100644
index 00000000..239f7a68
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rbegin.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to the reverse-beginning
+    json::reverse_iterator it = array.rbegin();
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rbegin.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rbegin.output
new file mode 100644
index 00000000..7ed6ff82
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rbegin.output
@@ -0,0 +1 @@
+5
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rend.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rend.cpp
new file mode 100644
index 00000000..adadbbdc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rend.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to the reverse-end
+    json::reverse_iterator it = array.rend();
+
+    // increment the iterator to point to the first element
+    --it;
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rend.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rend.output
new file mode 100644
index 00000000..d00491fd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/rend.output
@@ -0,0 +1 @@
+1
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse.cpp
new file mode 100644
index 00000000..8602687e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse.cpp
@@ -0,0 +1,131 @@
+#include <iostream>
+#include <iomanip>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+// a simple event consumer that collects string representations of the passed
+// values; note inheriting from json::json_sax_t is not required, but can
+// help not to forget a required function
+class sax_event_consumer : public json::json_sax_t
+{
+  public:
+    std::vector<std::string> events;
+
+    bool null() override
+    {
+        events.push_back("null()");
+        return true;
+    }
+
+    bool boolean(bool val) override
+    {
+        events.push_back("boolean(val=" + std::string(val ? "true" : "false") + ")");
+        return true;
+    }
+
+    bool number_integer(number_integer_t val) override
+    {
+        events.push_back("number_integer(val=" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val) override
+    {
+        events.push_back("number_unsigned(val=" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& s) override
+    {
+        events.push_back("number_float(val=" + std::to_string(val) + ", s=" + s + ")");
+        return true;
+    }
+
+    bool string(string_t& val) override
+    {
+        events.push_back("string(val=" + val + ")");
+        return true;
+    }
+
+    bool start_object(std::size_t elements) override
+    {
+        events.push_back("start_object(elements=" + std::to_string(elements) + ")");
+        return true;
+    }
+
+    bool end_object() override
+    {
+        events.push_back("end_object()");
+        return true;
+    }
+
+    bool start_array(std::size_t elements) override
+    {
+        events.push_back("start_array(elements=" + std::to_string(elements) + ")");
+        return true;
+    }
+
+    bool end_array() override
+    {
+        events.push_back("end_array()");
+        return true;
+    }
+
+    bool key(string_t& val) override
+    {
+        events.push_back("key(val=" + val + ")");
+        return true;
+    }
+
+    bool binary(json::binary_t& val) override
+    {
+        events.push_back("binary(val=[...])");
+        return true;
+    }
+
+    bool parse_error(std::size_t position, const std::string& last_token, const json::exception& ex) override
+    {
+        events.push_back("parse_error(position=" + std::to_string(position) + ", last_token=" + last_token + ",\n            ex=" + std::string(ex.what()) + ")");
+        return false;
+    }
+};
+
+int main()
+{
+    // a JSON text
+    auto text = R"(
+    {
+        "Image": {
+            "Width":  800,
+            "Height": 600,
+            "Title":  "View from 15th Floor",
+            "Thumbnail": {
+                "Url":    "http://www.example.com/image/481989943",
+                "Height": 125,
+                "Width":  100
+            },
+            "Animated" : false,
+            "IDs": [116, 943, 234, -38793],
+            "DeletionDate": null,
+            "Distance": 12.723374634
+        }
+    }]
+    )";
+
+    // create a SAX event consumer object
+    sax_event_consumer sec;
+
+    // parse JSON
+    bool result = json::sax_parse(text, &sec);
+
+    // output the recorded events
+    for (auto& event : sec.events)
+    {
+        std::cout << event << "\n";
+    }
+
+    // output the result of sax_parse
+    std::cout << "\nresult: " << std::boolalpha << result << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse.output
new file mode 100644
index 00000000..dd2fc2f0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse.output
@@ -0,0 +1,37 @@
+start_object(elements=18446744073709551615)
+key(val=Image)
+start_object(elements=18446744073709551615)
+key(val=Width)
+number_unsigned(val=800)
+key(val=Height)
+number_unsigned(val=600)
+key(val=Title)
+string(val=View from 15th Floor)
+key(val=Thumbnail)
+start_object(elements=18446744073709551615)
+key(val=Url)
+string(val=http://www.example.com/image/481989943)
+key(val=Height)
+number_unsigned(val=125)
+key(val=Width)
+number_unsigned(val=100)
+end_object()
+key(val=Animated)
+boolean(val=false)
+key(val=IDs)
+start_array(elements=18446744073709551615)
+number_unsigned(val=116)
+number_unsigned(val=943)
+number_unsigned(val=234)
+number_integer(val=-38793)
+end_array()
+key(val=DeletionDate)
+null()
+key(val=Distance)
+number_float(val=12.723375, s=12.723374634)
+end_object()
+end_object()
+parse_error(position=460, last_token=12.723374634<U+000A>        }<U+000A>    }],
+            ex=[json.exception.parse_error.101] parse error at line 17, column 6: syntax error while parsing value - unexpected ']'; expected end of input)
+
+result: false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse__binary.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse__binary.cpp
new file mode 100644
index 00000000..08bc85df
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse__binary.cpp
@@ -0,0 +1,114 @@
+#include <iostream>
+#include <iomanip>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+// a simple event consumer that collects string representations of the passed
+// values; note inheriting from json::json_sax_t is not required, but can
+// help not to forget a required function
+class sax_event_consumer : public json::json_sax_t
+{
+  public:
+    std::vector<std::string> events;
+
+    bool null() override
+    {
+        events.push_back("null()");
+        return true;
+    }
+
+    bool boolean(bool val) override
+    {
+        events.push_back("boolean(val=" + std::string(val ? "true" : "false") + ")");
+        return true;
+    }
+
+    bool number_integer(number_integer_t val) override
+    {
+        events.push_back("number_integer(val=" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val) override
+    {
+        events.push_back("number_unsigned(val=" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& s) override
+    {
+        events.push_back("number_float(val=" + std::to_string(val) + ", s=" + s + ")");
+        return true;
+    }
+
+    bool string(string_t& val) override
+    {
+        events.push_back("string(val=" + val + ")");
+        return true;
+    }
+
+    bool start_object(std::size_t elements) override
+    {
+        events.push_back("start_object(elements=" + std::to_string(elements) + ")");
+        return true;
+    }
+
+    bool end_object() override
+    {
+        events.push_back("end_object()");
+        return true;
+    }
+
+    bool start_array(std::size_t elements) override
+    {
+        events.push_back("start_array(elements=" + std::to_string(elements) + ")");
+        return true;
+    }
+
+    bool end_array() override
+    {
+        events.push_back("end_array()");
+        return true;
+    }
+
+    bool key(string_t& val) override
+    {
+        events.push_back("key(val=" + val + ")");
+        return true;
+    }
+
+    bool binary(json::binary_t& val) override
+    {
+        events.push_back("binary(val=[...])");
+        return true;
+    }
+
+    bool parse_error(std::size_t position, const std::string& last_token, const json::exception& ex) override
+    {
+        events.push_back("parse_error(position=" + std::to_string(position) + ", last_token=" + last_token + ",\n            ex=" + std::string(ex.what()) + ")");
+        return false;
+    }
+};
+
+int main()
+{
+    // CBOR byte string
+    std::vector<std::uint8_t> vec = {{0x44, 0xcA, 0xfe, 0xba, 0xbe}};
+
+    // create a SAX event consumer object
+    sax_event_consumer sec;
+
+    // parse CBOR
+    bool result = json::sax_parse(vec, &sec, json::input_format_t::cbor);
+
+    // output the recorded events
+    for (auto& event : sec.events)
+    {
+        std::cout << event << "\n";
+    }
+
+    // output the result of sax_parse
+    std::cout << "\nresult: " << std::boolalpha << result << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse__binary.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse__binary.output
new file mode 100644
index 00000000..f8808961
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/sax_parse__binary.output
@@ -0,0 +1,3 @@
+binary(val=[...])
+
+result: true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/size.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/size.cpp
new file mode 100644
index 00000000..23754837
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/size.cpp
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = 17;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_object_empty(json::value_t::object);
+    json j_array = {1, 2, 4, 8, 16};
+    json j_array_empty(json::value_t::array);
+    json j_string = "Hello, world";
+
+    // call size()
+    std::cout << j_null.size() << '\n';
+    std::cout << j_boolean.size() << '\n';
+    std::cout << j_number_integer.size() << '\n';
+    std::cout << j_number_float.size() << '\n';
+    std::cout << j_object.size() << '\n';
+    std::cout << j_object_empty.size() << '\n';
+    std::cout << j_array.size() << '\n';
+    std::cout << j_array_empty.size() << '\n';
+    std::cout << j_string.size() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/size.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/size.output
new file mode 100644
index 00000000..3831387b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/size.output
@@ -0,0 +1,9 @@
+0
+1
+1
+1
+2
+0
+5
+0
+1
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_hash.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_hash.cpp
new file mode 100644
index 00000000..9721910e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_hash.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    std::cout << "hash(null) = " << std::hash<json> {}(json(nullptr)) << '\n'
+              << "hash(false) = " << std::hash<json> {}(json(false)) << '\n'
+              << "hash(0) = " << std::hash<json> {}(json(0)) << '\n'
+              << "hash(0U) = " << std::hash<json> {}(json(0U)) << '\n'
+              << "hash(\"\") = " << std::hash<json> {}(json("")) << '\n'
+              << "hash({}) = " << std::hash<json> {}(json::object()) << '\n'
+              << "hash([]) = " << std::hash<json> {}(json::array()) << '\n'
+              << "hash({\"hello\": \"world\"}) = " << std::hash<json> {}("{\"hello\": \"world\"}"_json)
+              << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_hash.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_hash.output
new file mode 100644
index 00000000..521d2b4b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_hash.output
@@ -0,0 +1,8 @@
+hash(null) = 2654435769
+hash(false) = 2654436030
+hash(0) = 2654436095
+hash(0U) = 2654436156
+hash("") = 6142509191626859748
+hash({}) = 2654435832
+hash([]) = 2654435899
+hash({"hello": "world"}) = 4469488738203676328
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_swap.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_swap.cpp
new file mode 100644
index 00000000..36ab3ce6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_swap.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j1 = {{"one", 1}, {"two", 2}};
+    json j2 = {1, 2, 4, 8, 16};
+
+    std::cout << "j1 = " << j1 << " | j2 = " << j2 << '\n';
+
+    // swap values
+    std::swap(j1, j2);
+
+    std::cout << "j1 = " << j1 << " | j2 = " << j2 << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_swap.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_swap.output
new file mode 100644
index 00000000..5ae6db78
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/std_swap.output
@@ -0,0 +1,2 @@
+j1 = {"one":1,"two":2} | j2 = [1,2,4,8,16]
+j1 = [1,2,4,8,16] | j2 = {"one":1,"two":2}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/string_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/string_t.cpp
new file mode 100644
index 00000000..77a9ea48
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/string_t.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::boolalpha << std::is_same<std::string, json::string_t>::value << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/string_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/string_t.output
new file mode 100644
index 00000000..27ba77dd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/string_t.output
@@ -0,0 +1 @@
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__array_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__array_t.cpp
new file mode 100644
index 00000000..2119dd55
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__array_t.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON value
+    json value = {{"array", {1, 2, 3, 4}}};
+
+    // create an array_t
+    json::array_t array = {"Snap", "Crackle", "Pop"};
+
+    // swap the array stored in the JSON value
+    value["array"].swap(array);
+
+    // output the values
+    std::cout << "value = " << value << '\n';
+    std::cout << "array = " << array << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__array_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__array_t.output
new file mode 100644
index 00000000..365302cc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__array_t.output
@@ -0,0 +1,2 @@
+value = {"array":["Snap","Crackle","Pop"]}
+array = [1,2,3,4]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__binary_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__binary_t.cpp
new file mode 100644
index 00000000..4b8fc3db
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__binary_t.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a binary value
+    json value = json::binary({1, 2, 3});
+
+    // create a binary_t
+    json::binary_t binary = {{4, 5, 6}};
+
+    // swap the object stored in the JSON value
+    value.swap(binary);
+
+    // output the values
+    std::cout << "value = " << value << '\n';
+    std::cout << "binary = " << json(binary) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__binary_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__binary_t.output
new file mode 100644
index 00000000..68cd7689
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__binary_t.output
@@ -0,0 +1,2 @@
+value = {"bytes":[4,5,6],"subtype":null}
+binary = {"bytes":[1,2,3],"subtype":null}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__object_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__object_t.cpp
new file mode 100644
index 00000000..301b558d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__object_t.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON value
+    json value = { {"translation", {{"one", "eins"}, {"two", "zwei"}}} };
+
+    // create an object_t
+    json::object_t object = {{"cow", "Kuh"}, {"dog", "Hund"}};
+
+    // swap the object stored in the JSON value
+    value["translation"].swap(object);
+
+    // output the values
+    std::cout << "value = " << value << '\n';
+    std::cout << "object = " << object << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__object_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__object_t.output
new file mode 100644
index 00000000..b5c9791b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__object_t.output
@@ -0,0 +1,2 @@
+value = {"translation":{"cow":"Kuh","dog":"Hund"}}
+object = {"one":"eins","two":"zwei"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__reference.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__reference.cpp
new file mode 100644
index 00000000..34182ad2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__reference.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create two JSON values
+    json j1 = {1, 2, 3, 4, 5};
+    json j2 = {{"pi", 3.141592653589793}, {"e", 2.718281828459045}};
+
+    // swap the values
+    j1.swap(j2);
+
+    // output the values
+    std::cout << "j1 = " << j1 << '\n';
+    std::cout << "j2 = " << j2 << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__reference.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__reference.output
new file mode 100644
index 00000000..96b07b09
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__reference.output
@@ -0,0 +1,2 @@
+j1 = {"e":2.718281828459045,"pi":3.141592653589793}
+j2 = [1,2,3,4,5]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__string_t.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__string_t.cpp
new file mode 100644
index 00000000..b5d58316
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__string_t.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON value
+    json value = { "the good", "the bad", "the ugly" };
+
+    // create string_t
+    json::string_t string = "the fast";
+
+    // swap the object stored in the JSON value
+    value[1].swap(string);
+
+    // output the values
+    std::cout << "value = " << value << '\n';
+    std::cout << "string = " << string << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__string_t.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__string_t.output
new file mode 100644
index 00000000..ae2a0976
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/swap__string_t.output
@@ -0,0 +1,2 @@
+value = ["the good","the fast","the ugly"]
+string = the bad
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bjdata.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bjdata.cpp
new file mode 100644
index 00000000..9b7abac4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bjdata.cpp
@@ -0,0 +1,64 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+// function to print BJData's diagnostic format
+void print_byte(uint8_t byte)
+{
+    if (32 < byte and byte < 128)
+    {
+        std::cout << (char)byte;
+    }
+    else
+    {
+        std::cout << (int)byte;
+    }
+}
+
+int main()
+{
+    // create a JSON value
+    json j = R"({"compact": true, "schema": false})"_json;
+
+    // serialize it to BJData
+    std::vector<std::uint8_t> v = json::to_bjdata(j);
+
+    // print the vector content
+    for (auto& byte : v)
+    {
+        print_byte(byte);
+    }
+    std::cout << std::endl;
+
+    // create an array of numbers
+    json array = {1, 2, 3, 4, 5, 6, 7, 8};
+
+    // serialize it to BJData using default representation
+    std::vector<std::uint8_t> v_array = json::to_bjdata(array);
+    // serialize it to BJData using size optimization
+    std::vector<std::uint8_t> v_array_size = json::to_bjdata(array, true);
+    // serialize it to BJData using type optimization
+    std::vector<std::uint8_t> v_array_size_and_type = json::to_bjdata(array, true, true);
+
+    // print the vector contents
+    for (auto& byte : v_array)
+    {
+        print_byte(byte);
+    }
+    std::cout << std::endl;
+
+    for (auto& byte : v_array_size)
+    {
+        print_byte(byte);
+    }
+    std::cout << std::endl;
+
+    for (auto& byte : v_array_size_and_type)
+    {
+        print_byte(byte);
+    }
+    std::cout << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bjdata.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bjdata.output
new file mode 100644
index 00000000..087980cb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bjdata.output
@@ -0,0 +1,4 @@
+{i7compactTi6schemaF}
+[i1i2i3i4i5i6i7i8]
+[#i8i1i2i3i4i5i6i7i8
+[$i#i812345678
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bson.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bson.cpp
new file mode 100644
index 00000000..3484b0b7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bson.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    json j = R"({"compact": true, "schema": 0})"_json;
+
+    // serialize it to BSON
+    std::vector<std::uint8_t> v = json::to_bson(j);
+
+    // print the vector content
+    for (auto& byte : v)
+    {
+        std::cout << "0x" << std::hex << std::setw(2) << std::setfill('0') << (int)byte << " ";
+    }
+    std::cout << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bson.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bson.output
new file mode 100644
index 00000000..379532a2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_bson.output
@@ -0,0 +1 @@
+0x1b 0x00 0x00 0x00 0x08 0x63 0x6f 0x6d 0x70 0x61 0x63 0x74 0x00 0x01 0x10 0x73 0x63 0x68 0x65 0x6d 0x61 0x00 0x00 0x00 0x00 0x00 0x00 
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_cbor.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_cbor.cpp
new file mode 100644
index 00000000..3d5e0415
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_cbor.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    json j = R"({"compact": true, "schema": 0})"_json;
+
+    // serialize it to CBOR
+    std::vector<std::uint8_t> v = json::to_cbor(j);
+
+    // print the vector content
+    for (auto& byte : v)
+    {
+        std::cout << "0x" << std::hex << std::setw(2) << std::setfill('0') << (int)byte << " ";
+    }
+    std::cout << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_cbor.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_cbor.output
new file mode 100644
index 00000000..02c9adab
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_cbor.output
@@ -0,0 +1 @@
+0xa2 0x67 0x63 0x6f 0x6d 0x70 0x61 0x63 0x74 0xf5 0x66 0x73 0x63 0x68 0x65 0x6d 0x61 0x00 
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_json.cpp
new file mode 100644
index 00000000..1f82a4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_json.cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+namespace ns
+{
+// a simple struct to model a person
+struct person
+{
+    std::string name;
+    std::string address;
+    int age;
+};
+} // namespace ns
+
+namespace ns
+{
+void to_json(json& j, const person& p)
+{
+    j = json{ {"name", p.name}, {"address", p.address}, {"age", p.age} };
+}
+} // namespace ns
+
+int main()
+{
+    ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+    json j = p;
+
+    std::cout << j << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_json.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_json.output
new file mode 100644
index 00000000..e9c5bf38
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_json.output
@@ -0,0 +1 @@
+{"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_msgpack.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_msgpack.cpp
new file mode 100644
index 00000000..b29ae8c7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_msgpack.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    json j = R"({"compact": true, "schema": 0})"_json;
+
+    // serialize it to MessagePack
+    std::vector<std::uint8_t> v = json::to_msgpack(j);
+
+    // print the vector content
+    for (auto& byte : v)
+    {
+        std::cout << "0x" << std::hex << std::setw(2) << std::setfill('0') << (int)byte << " ";
+    }
+    std::cout << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_msgpack.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_msgpack.output
new file mode 100644
index 00000000..4d6c40ab
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_msgpack.output
@@ -0,0 +1 @@
+0x82 0xa7 0x63 0x6f 0x6d 0x70 0x61 0x63 0x74 0xc3 0xa6 0x73 0x63 0x68 0x65 0x6d 0x61 0x00 
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_string.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_string.cpp
new file mode 100644
index 00000000..ee44283f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_string.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using std::to_string;
+
+int main()
+{
+    // create values
+    json j = {{"one", 1}, {"two", 2}};
+    int i = 42;
+
+    // use ADL to select best to_string function
+    auto j_str = to_string(j);  // calling nlohmann::to_string
+    auto i_str = to_string(i);  // calling std::to_string
+
+    // serialize without indentation
+    std::cout << j_str << "\n\n"
+              << i_str << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_string.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_string.output
new file mode 100644
index 00000000..b261f35e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_string.output
@@ -0,0 +1,3 @@
+{"one":1,"two":2}
+
+42
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_ubjson.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_ubjson.cpp
new file mode 100644
index 00000000..fd267a85
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_ubjson.cpp
@@ -0,0 +1,64 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+// function to print UBJSON's diagnostic format
+void print_byte(uint8_t byte)
+{
+    if (32 < byte and byte < 128)
+    {
+        std::cout << (char)byte;
+    }
+    else
+    {
+        std::cout << (int)byte;
+    }
+}
+
+int main()
+{
+    // create a JSON value
+    json j = R"({"compact": true, "schema": false})"_json;
+
+    // serialize it to UBJSON
+    std::vector<std::uint8_t> v = json::to_ubjson(j);
+
+    // print the vector content
+    for (auto& byte : v)
+    {
+        print_byte(byte);
+    }
+    std::cout << std::endl;
+
+    // create an array of numbers
+    json array = {1, 2, 3, 4, 5, 6, 7, 8};
+
+    // serialize it to UBJSON using default representation
+    std::vector<std::uint8_t> v_array = json::to_ubjson(array);
+    // serialize it to UBJSON using size optimization
+    std::vector<std::uint8_t> v_array_size = json::to_ubjson(array, true);
+    // serialize it to UBJSON using type optimization
+    std::vector<std::uint8_t> v_array_size_and_type = json::to_ubjson(array, true, true);
+
+    // print the vector contents
+    for (auto& byte : v_array)
+    {
+        print_byte(byte);
+    }
+    std::cout << std::endl;
+
+    for (auto& byte : v_array_size)
+    {
+        print_byte(byte);
+    }
+    std::cout << std::endl;
+
+    for (auto& byte : v_array_size_and_type)
+    {
+        print_byte(byte);
+    }
+    std::cout << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_ubjson.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_ubjson.output
new file mode 100644
index 00000000..087980cb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/to_ubjson.output
@@ -0,0 +1,4 @@
+{i7compactTi6schemaF}
+[i1i2i3i4i5i6i7i8]
+[#i8i1i2i3i4i5i6i7i8
+[$i#i812345678
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type.cpp
new file mode 100644
index 00000000..68fba3a9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type.cpp
@@ -0,0 +1,28 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = -17;
+    json j_number_unsigned = 42u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+
+    // call type()
+    std::cout << std::boolalpha;
+    std::cout << (j_null.type() == json::value_t::null) << '\n';
+    std::cout << (j_boolean.type() == json::value_t::boolean) << '\n';
+    std::cout << (j_number_integer.type() == json::value_t::number_integer) << '\n';
+    std::cout << (j_number_unsigned.type() == json::value_t::number_unsigned) << '\n';
+    std::cout << (j_number_float.type() == json::value_t::number_float) << '\n';
+    std::cout << (j_object.type() == json::value_t::object) << '\n';
+    std::cout << (j_array.type() == json::value_t::array) << '\n';
+    std::cout << (j_string.type() == json::value_t::string) << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type.output
new file mode 100644
index 00000000..310e632a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type.output
@@ -0,0 +1,8 @@
+true
+true
+true
+true
+true
+true
+true
+true
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_error.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_error.cpp
new file mode 100644
index 00000000..f520f401
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_error.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    try
+    {
+        // calling push_back() on a string value
+        json j = "string";
+        j.push_back("another string");
+    }
+    catch (const json::type_error& e)
+    {
+        // output exception information
+        std::cout << "message: " << e.what() << '\n'
+                  << "exception id: " << e.id << std::endl;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_error.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_error.output
new file mode 100644
index 00000000..1a673390
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_error.output
@@ -0,0 +1,2 @@
+message: [json.exception.type_error.308] cannot use push_back() with string
+exception id: 308
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_name.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_name.cpp
new file mode 100644
index 00000000..32d3590c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_name.cpp
@@ -0,0 +1,27 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json j_null;
+    json j_boolean = true;
+    json j_number_integer = -17;
+    json j_number_unsigned = 42u;
+    json j_number_float = 23.42;
+    json j_object = {{"one", 1}, {"two", 2}};
+    json j_array = {1, 2, 4, 8, 16};
+    json j_string = "Hello, world";
+
+    // call type_name()
+    std::cout << j_null << " is a " << j_null.type_name() << '\n';
+    std::cout << j_boolean << " is a " << j_boolean.type_name() << '\n';
+    std::cout << j_number_integer << " is a " << j_number_integer.type_name() << '\n';
+    std::cout << j_number_unsigned << " is a " << j_number_unsigned.type_name() << '\n';
+    std::cout << j_number_float << " is a " << j_number_float.type_name() << '\n';
+    std::cout << j_object << " is an " << j_object.type_name() << '\n';
+    std::cout << j_array << " is an " << j_array.type_name() << '\n';
+    std::cout << j_string << " is a " << j_string.type_name() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_name.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_name.output
new file mode 100644
index 00000000..f394e819
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/type_name.output
@@ -0,0 +1,8 @@
+null is a null
+true is a boolean
+-17 is a number
+42 is a number
+23.42 is a number
+{"one":1,"two":2} is an object
+[1,2,4,8,16] is an array
+"Hello, world" is a string
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/unflatten.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/unflatten.cpp
new file mode 100644
index 00000000..75fb02d0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/unflatten.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON value
+    json j_flattened =
+    {
+        {"/answer/everything", 42},
+        {"/happy", true},
+        {"/list/0", 1},
+        {"/list/1", 0},
+        {"/list/2", 2},
+        {"/name", "Niels"},
+        {"/nothing", nullptr},
+        {"/object/currency", "USD"},
+        {"/object/value", 42.99},
+        {"/pi", 3.141}
+    };
+
+    // call unflatten()
+    std::cout << std::setw(4) << j_flattened.unflatten() << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/unflatten.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/unflatten.output
new file mode 100644
index 00000000..ed48385a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/unflatten.output
@@ -0,0 +1,18 @@
+{
+    "answer": {
+        "everything": 42
+    },
+    "happy": true,
+    "list": [
+        1,
+        0,
+        2
+    ],
+    "name": "Niels",
+    "nothing": null,
+    "object": {
+        "currency": "USD",
+        "value": 42.99
+    },
+    "pi": 3.141
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update.cpp
new file mode 100644
index 00000000..ff94b67f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create two JSON objects
+    json o1 = R"( {"color": "red", "price": 17.99, "names": {"de": "Flugzeug"}} )"_json;
+    json o2 = R"( {"color": "blue", "speed": 100, "names": {"en": "plane"}} )"_json;
+    json o3 = o1;
+
+    // add all keys from o2 to o1 (updating "color", replacing "names")
+    o1.update(o2);
+
+    // add all keys from o2 to o1 (updating "color", merging "names")
+    o3.update(o2, true);
+
+    // output updated object o1 and o3
+    std::cout << std::setw(2) << o1 << '\n';
+    std::cout << std::setw(2) << o3 << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update.output
new file mode 100644
index 00000000..c35a7451
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update.output
@@ -0,0 +1,17 @@
+{
+  "color": "blue",
+  "names": {
+    "en": "plane"
+  },
+  "price": 17.99,
+  "speed": 100
+}
+{
+  "color": "blue",
+  "names": {
+    "de": "Flugzeug",
+    "en": "plane"
+  },
+  "price": 17.99,
+  "speed": 100
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update__range.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update__range.cpp
new file mode 100644
index 00000000..5b438504
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update__range.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create two JSON objects
+    json o1 = R"( {"color": "red", "price": 17.99, "names": {"de": "Flugzeug"}} )"_json;
+    json o2 = R"( {"color": "blue", "speed": 100, "names": {"en": "plane"}} )"_json;
+    json o3 = o1;
+
+    // add all keys from o2 to o1 (updating "color", replacing "names")
+    o1.update(o2.begin(), o2.end());
+
+    // add all keys from o2 to o1 (updating "color", merging "names")
+    o3.update(o2.begin(), o2.end(), true);
+
+    // output updated object o1 and o3
+    std::cout << std::setw(2) << o1 << '\n';
+    std::cout << std::setw(2) << o3 << '\n';
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update__range.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update__range.output
new file mode 100644
index 00000000..c35a7451
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/update__range.output
@@ -0,0 +1,17 @@
+{
+  "color": "blue",
+  "names": {
+    "en": "plane"
+  },
+  "price": 17.99,
+  "speed": 100
+}
+{
+  "color": "blue",
+  "names": {
+    "de": "Flugzeug",
+    "en": "plane"
+  },
+  "price": 17.99,
+  "speed": 100
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__json_ptr.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__json_ptr.cpp
new file mode 100644
index 00000000..d866ef07
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__json_ptr.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON object with different entry types
+    json j =
+    {
+        {"integer", 1},
+        {"floating", 42.23},
+        {"string", "hello world"},
+        {"boolean", true},
+        {"object", {{"key1", 1}, {"key2", 2}}},
+        {"array", {1, 2, 3}}
+    };
+
+    // access existing values
+    int v_integer = j.value("/integer"_json_pointer, 0);
+    double v_floating = j.value("/floating"_json_pointer, 47.11);
+
+    // access nonexisting values and rely on default value
+    std::string v_string = j.value("/nonexisting"_json_pointer, "oops");
+    bool v_boolean = j.value("/nonexisting"_json_pointer, false);
+
+    // output values
+    std::cout << std::boolalpha << v_integer << " " << v_floating
+              << " " << v_string << " " << v_boolean << "\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__json_ptr.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__json_ptr.output
new file mode 100644
index 00000000..dfc40e58
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__json_ptr.output
@@ -0,0 +1 @@
+1 42.23 oops false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__keytype.c++17.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__keytype.c++17.cpp
new file mode 100644
index 00000000..1f6ff5c3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__keytype.c++17.cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include <string_view>
+#include <nlohmann/json.hpp>
+
+using namespace std::string_view_literals;
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object with different entry types
+    json j =
+    {
+        {"integer", 1},
+        {"floating", 42.23},
+        {"string", "hello world"},
+        {"boolean", true},
+        {"object", {{"key1", 1}, {"key2", 2}}},
+        {"array", {1, 2, 3}}
+    };
+
+    // access existing values
+    int v_integer = j.value("integer"sv, 0);
+    double v_floating = j.value("floating"sv, 47.11);
+
+    // access nonexisting values and rely on default value
+    std::string v_string = j.value("nonexisting"sv, "oops");
+    bool v_boolean = j.value("nonexisting"sv, false);
+
+    // output values
+    std::cout << std::boolalpha << v_integer << " " << v_floating
+              << " " << v_string << " " << v_boolean << "\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__keytype.c++17.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__keytype.c++17.output
new file mode 100644
index 00000000..dfc40e58
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__keytype.c++17.output
@@ -0,0 +1 @@
+1 42.23 oops false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__object_t_key_type.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__object_t_key_type.cpp
new file mode 100644
index 00000000..9488d30e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__object_t_key_type.cpp
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON object with different entry types
+    json j =
+    {
+        {"integer", 1},
+        {"floating", 42.23},
+        {"string", "hello world"},
+        {"boolean", true},
+        {"object", {{"key1", 1}, {"key2", 2}}},
+        {"array", {1, 2, 3}}
+    };
+
+    // access existing values
+    int v_integer = j.value("integer", 0);
+    double v_floating = j.value("floating", 47.11);
+
+    // access nonexisting values and rely on default value
+    std::string v_string = j.value("nonexisting", "oops");
+    bool v_boolean = j.value("nonexisting", false);
+
+    // output values
+    std::cout << std::boolalpha << v_integer << " " << v_floating
+              << " " << v_string << " " << v_boolean << "\n";
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__object_t_key_type.output b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__object_t_key_type.output
new file mode 100644
index 00000000..dfc40e58
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/examples/value__object_t_key_type.output
@@ -0,0 +1 @@
+1 42.23 oops false
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/json.gif b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/json.gif
new file mode 100644
index 00000000..8b86b037
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/json.gif differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/Makefile b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/Makefile
new file mode 100644
index 00000000..fa525a5f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/Makefile
@@ -0,0 +1,45 @@
+# serve the site locally
+serve: prepare_files style_check
+	venv/bin/mkdocs serve
+
+serve_dirty: prepare_files style_check
+	venv/bin/mkdocs serve --dirtyreload
+
+build: prepare_files style_check
+	venv/bin/mkdocs build
+
+# create files that are not versioned inside the mkdocs folder (images, examples)
+prepare_files: clean
+	mkdir docs/examples
+	cp -r ../json.gif docs/images
+	cp -r ../examples/*.cpp ../examples/*.output docs/examples
+
+style_check:
+	@cd docs ; python3 ../scripts/check_structure.py
+
+# clean subfolders
+clean:
+	rm -fr docs/images/json.gif docs/examples
+
+# publish site to GitHub pages (not working in GitHub Actions; need special action)
+publish: prepare_files
+	venv/bin/mkdocs gh-deploy --clean --force
+
+# install a Python virtual environment
+install_venv: requirements.txt
+	python3 -mvenv venv
+	venv/bin/pip install --upgrade pip
+	venv/bin/pip install wheel
+	venv/bin/pip install -r requirements.txt
+
+# uninstall the virtual environment
+uninstall_venv: clean
+	rm -fr venv
+
+update_requirements:
+	rm -fr venv_small
+	python3 -mvenv venv_small
+	venv_small/bin/pip3 install pur
+	venv_small/bin/pur -r requirements.txt
+	rm -fr venv_small venv
+	make install_venv
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/from_json.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/from_json.md
new file mode 100644
index 00000000..176290e2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/from_json.md
@@ -0,0 +1,73 @@
+# <small>nlohmann::adl_serializer::</small>from_json
+
+```cpp
+// (1)
+template<typename BasicJsonType, typename TargetType = ValueType>
+static auto from_json(BasicJsonType && j, TargetType& val) noexcept(
+    noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
+-> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
+
+// (2)
+template<typename BasicJsonType, typename TargetType = ValueType>
+static auto from_json(BasicJsonType && j) noexcept(
+noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {})))
+-> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {}))
+```
+
+This function is usually called by the [`get()`](../basic_json/get.md) function of the [basic_json](../basic_json/index.md)
+class (either explicitly or via the conversion operators).
+
+1. This function is chosen for default-constructible value types.
+2. This function is chosen for value types which are not default-constructible.
+
+## Parameters
+
+`j` (in)
+:   JSON value to read from
+
+`val` (out)
+:   value to write to
+
+## Return value
+
+Copy of the JSON value, converted to `ValueType`
+
+## Examples
+
+??? example "Example: (1) Default-constructible type"
+
+    The example below shows how a `from_json` function can be implemented for a user-defined type. This function is
+    called by the `adl_serializer` when `template get<ns::person>()` is called.
+        
+    ```cpp
+    --8<-- "examples/from_json__default_constructible.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/from_json__default_constructible.output"
+    ```
+
+??? example "Example: (2) Non-default-constructible type"
+
+    The example below shows how a `from_json` is implemented as part of a specialization of the `adl_serializer` to
+    realize the conversion of a non-default-constructible type.
+        
+    ```cpp
+    --8<-- "examples/from_json__non_default_constructible.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/from_json__non_default_constructible.output"
+    ```
+
+## See also
+
+- [to_json](to_json.md)
+
+## Version history
+
+- Added in version 2.1.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/index.md
new file mode 100644
index 00000000..95f35cdd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/index.md
@@ -0,0 +1,35 @@
+# <small>nlohmann::</small>adl_serializer
+
+```cpp
+template<typename, typename>
+struct adl_serializer;
+```
+
+Serializer that uses ADL ([Argument-Dependent Lookup](https://en.cppreference.com/w/cpp/language/adl)) to choose
+`to_json`/`from_json` functions from the types' namespaces.
+
+It is implemented similar to
+
+```cpp
+template<typename ValueType>
+struct adl_serializer {
+    template<typename BasicJsonType>
+    static void to_json(BasicJsonType& j, const T& value) {
+        // calls the "to_json" method in T's namespace
+    }
+
+    template<typename BasicJsonType>
+    static void from_json(const BasicJsonType& j, T& value) {
+        // same thing, but with the "from_json" method
+    }
+};
+```
+
+## Member functions
+
+- [**from_json**](from_json.md) - convert a JSON value to any value type
+- [**to_json**](to_json.md) - convert any value type to a JSON value
+
+## Version history
+
+- Added in version 2.1.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/to_json.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/to_json.md
new file mode 100644
index 00000000..da976518
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/adl_serializer/to_json.md
@@ -0,0 +1,43 @@
+# <small>nlohmann::adl_serializer::</small>to_json
+
+```cpp
+template<typename BasicJsonType, typename TargetType = ValueType>
+static auto to_json(BasicJsonType& j, TargetType && val) noexcept(
+    noexcept(::nlohmann::to_json(j, std::forward<TargetType>(val))))
+-> decltype(::nlohmann::to_json(j, std::forward<TargetType>(val)), void())
+```
+
+This function is usually called by the constructors of the [basic_json](../basic_json/index.md) class.
+
+## Parameters
+
+`j` (out)
+:   JSON value to write to
+
+`val` (in)
+:   value to read from
+
+## Examples
+
+??? example
+
+    The example below shows how a `to_json` function can be implemented for a user-defined type. This function is called
+    by the `adl_serializer` when the constructor `basic_json(ns::person)` is called.
+        
+    ```cpp
+    --8<-- "examples/to_json.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/to_json.output"
+    ```
+
+## See also
+
+- [from_json](from_json.md)
+
+## Version history
+
+- Added in version 2.1.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/accept.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/accept.md
new file mode 100644
index 00000000..b12d6223
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/accept.md
@@ -0,0 +1,113 @@
+# <small>nlohmann::basic_json::</small>accept
+
+```cpp
+// (1)
+template<typename InputType>
+static bool accept(InputType&& i,
+                   const bool ignore_comments = false);
+
+// (2)
+template<typename IteratorType>
+static bool accept(IteratorType first, IteratorType last,
+                   const bool ignore_comments = false);
+```
+
+Checks whether the input is valid JSON.
+
+1. Reads from a compatible input.
+2. Reads from a pair of character iterators
+    
+    The value_type of the iterator must be an integral type with size of 1, 2 or 4 bytes, which will be interpreted
+    respectively as UTF-8, UTF-16 and UTF-32.
+    
+Unlike the [`parse`](parse.md) function, this function neither throws an exception in case of invalid JSON input
+(i.e., a parse error) nor creates diagnostic information.
+
+## Template parameters
+
+`InputType`
+:   A compatible input, for instance:
+    
+    - an `std::istream` object
+    - a `FILE` pointer (throws if null)
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters (throws if null)
+    - a `std::string`
+    - an object `obj` for which `begin(obj)` and `end(obj)` produces a valid pair of iterators.
+
+`IteratorType`
+:   a compatible iterator type, for instance.
+
+    - a pair of `std::string::iterator` or `std::vector<std::uint8_t>::iterator`
+    - a pair of pointers such as `ptr` and `ptr + len`
+
+## Parameters
+
+`i` (in)
+:   Input to parse from.
+
+`ignore_comments` (in)
+:   whether comments should be ignored and treated like whitespace (`#!cpp true`) or yield a parse error
+    (`#!cpp false`); (optional, `#!cpp false` by default)
+
+`first` (in)
+:   iterator to start of character range
+
+`last` (in)
+:   iterator to end of character range
+
+## Return value
+
+Whether the input is valid JSON.
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+Throws [`parse_error.101`](../../home/exceptions.md#jsonexceptionparse_error101) in case of an empty input like a null `FILE*` or `char*` pointer.
+
+## Complexity
+
+Linear in the length of the input. The parser is a predictive LL(1) parser.
+
+## Notes
+
+A UTF-8 byte order mark is silently ignored.
+
+## Examples
+
+??? example
+
+    The example below demonstrates the `accept()` function reading from a string.
+
+    ```cpp
+    --8<-- "examples/accept__string.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/accept__string.output"
+    ```
+
+## See also
+
+- [parse](parse.md) - deserialize from a compatible input
+- [operator>>](../operator_gtgt.md) - deserialize from stream
+
+## Version history
+
+- Added in version 3.0.0.
+- Ignoring comments via `ignore_comments` added in version 3.9.0.
+- Changed [runtime assertion](../../features/assertions.md) in case of `FILE*` null pointers to exception in version 3.11.4.
+
+!!! warning "Deprecation"
+
+    Overload (2) replaces calls to `accept` with a pair of iterators as their first parameter which has been
+    deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+    `#!cpp accept({ptr, ptr+len}, ...);` with `#!cpp accept(ptr, ptr+len, ...);`.
+
+    You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated
+    function.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/array.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/array.md
new file mode 100644
index 00000000..22b2ee1d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/array.md
@@ -0,0 +1,60 @@
+# <small>nlohmann::basic_json::</small>array
+
+```cpp
+static basic_json array(initializer_list_t init = {});
+```
+
+Creates a JSON array value from a given initializer list. That is, given a list of values `a, b, c`, creates the JSON
+value `#!json [a, b, c]`. If the initializer list is empty, the empty array `#!json []` is created.
+
+## Parameters
+
+`init` (in)
+:   initializer list with JSON values to create an array from (optional)
+
+## Return value
+
+JSON array value
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Linear in the size of `init`.
+
+## Notes
+
+This function is only needed to express two edge cases that cannot be realized with the initializer list constructor
+([`basic_json(initializer_list_t, bool, value_t)`](basic_json.md)). These cases are:
+
+1. creating an array whose elements are all pairs whose first element is a string -- in this case, the initializer list
+   constructor would create an object, taking the first elements as keys
+2. creating an empty array -- passing the empty initializer list to the initializer list constructor yields an empty
+   object
+
+## Examples
+
+??? example
+
+    The following code shows an example for the `array` function.
+
+    ```cpp
+    --8<-- "examples/array.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/array.output"
+    ```
+
+## See also
+
+- [`basic_json(initializer_list_t)`](basic_json.md) - create a JSON value from an initializer list
+- [`object`](object.md) - create a JSON object value from an initializer list
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/array_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/array_t.md
new file mode 100644
index 00000000..dd2b901d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/array_t.md
@@ -0,0 +1,68 @@
+# <small>nlohmann::basic_json::</small>array_t
+
+```cpp
+using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
+```
+
+The type used to store JSON arrays.
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes JSON arrays as follows:
+> An array is an ordered sequence of zero or more values.
+
+To store objects in C++, a type is defined by the template parameters explained below.
+
+## Template parameters
+
+`ArrayType`
+:   container type to store arrays (e.g., `std::vector` or `std::list`)
+
+`AllocatorType`
+:   the allocator to use for objects (e.g., `std::allocator`)
+
+## Notes
+
+#### Default type
+
+With the default values for `ArrayType` (`std::vector`) and `AllocatorType` (`std::allocator`), the default value for
+`array_t` is:
+
+```cpp
+std::vector<
+  basic_json, // value_type
+  std::allocator<basic_json> // allocator_type
+>
+```
+
+#### Limits
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) specifies:
+> An implementation may set limits on the maximum depth of nesting.
+
+In this class, the array's limit of nesting is not explicitly constrained. However, a maximum depth of nesting may be
+introduced by the compiler or runtime environment. A theoretical limit can be queried by calling the
+[`max_size`](max_size.md) function of a JSON array.
+
+#### Storage
+
+Arrays are stored as pointers in a `basic_json` type. That is, for any access to array values, a pointer of type
+`#!cpp array_t*` must be dereferenced.
+
+## Examples
+
+??? example
+
+    The following code shows that `array_t` is by default, a typedef to `#!cpp std::vector<nlohmann::json>`.
+     
+    ```cpp
+    --8<-- "examples/array_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/array_t.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/at.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/at.md
new file mode 100644
index 00000000..5e950450
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/at.md
@@ -0,0 +1,226 @@
+# <small>nlohmann::basic_json::</small>at
+
+```cpp
+// (1)
+reference at(size_type idx);
+const_reference at(size_type idx) const;
+
+// (2)
+reference at(const typename object_t::key_type& key);
+const_reference at(const typename object_t::key_type& key) const;
+
+// (3)
+template<typename KeyType>
+reference at(KeyType&& key);
+template<typename KeyType>
+const_reference at(KeyType&& key) const;
+
+// (4)
+reference at(const json_pointer& ptr);
+const_reference at(const json_pointer& ptr) const;
+```
+
+1. Returns a reference to the array element at specified location `idx`, with bounds checking.
+2. Returns a reference to the object element with specified key `key`, with bounds checking.
+3. See 2. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
+   `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+4. Returns a reference to the element at specified JSON pointer `ptr`, with bounds checking.
+
+## Template parameters
+
+`KeyType`
+:   A type for an object key other than [`json_pointer`](../json_pointer/index.md) that is comparable with
+    [`string_t`](string_t.md) using  [`object_comparator_t`](object_comparator_t.md).
+    This can also be a string view (C++17).
+
+## Parameters
+
+`idx` (in)
+:   index of the element to access
+
+`key` (in)
+:   object key of the elements to access
+
+`ptr` (in)
+:   JSON pointer to the desired element
+
+## Return value
+
+1. reference to the element at index `idx`
+2. reference to the element at key `key`
+3. reference to the element at key `key`
+4. reference to the element pointed to by `ptr`
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+1. The function can throw the following exceptions:
+    - Throws [`type_error.304`](../../home/exceptions.md#jsonexceptiontype_error304) if the JSON value is not an array;
+      in this case, calling `at` with an index makes no sense. See example below.
+    - Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if the index `idx` is out of
+      range of the array; that is, `idx >= size()`. See example below.
+2. The function can throw the following exceptions:
+    - Throws [`type_error.304`](../../home/exceptions.md#jsonexceptiontype_error304) if the JSON value is not an object;
+      in this case, calling `at` with a key makes no sense. See example below.
+    - Throws [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if the key `key` is not
+      stored in the object; that is, `find(key) == end()`. See example below.
+3. See 2.
+4. The function can throw the following exceptions:
+    - Throws [`parse_error.106`](../../home/exceptions.md#jsonexceptionparse_error106) if an array index in the passed
+      JSON pointer `ptr` begins with '0'. See example below.
+    - Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if an array index in the passed
+      JSON pointer `ptr` is not a number. See example below.
+    - Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if an array index in the passed
+      JSON pointer `ptr` is out of range. See example below.
+    - Throws [`out_of_range.402`](../../home/exceptions.md#jsonexceptionout_of_range402) if the array index '-' is used
+      in the passed JSON pointer `ptr`. As `at` provides checked access (and no elements are implicitly inserted), the
+      index '-' is always invalid. See example below.
+    - Throws [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if the JSON pointer describes a
+      key of an object which cannot be found. See example below.
+    - Throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if the JSON pointer `ptr` can
+      not be resolved. See example below.
+
+## Complexity
+
+1. Constant.
+2. Logarithmic in the size of the container.
+3. Logarithmic in the size of the container.
+4. Logarithmic in the size of the container.
+
+## Examples
+
+??? example "Example: (1) access specified array element with bounds checking"
+
+    The example below shows how array elements can be read and written using `at()`. It also demonstrates the different
+    exceptions that can be thrown.
+    
+    ```cpp
+    --8<-- "examples/at__size_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/at__size_type.output"
+    ```
+
+??? example "Example: (1) access specified array element with bounds checking"
+
+    The example below shows how array elements can be read using `at()`. It also demonstrates the different exceptions
+    that can be thrown.
+        
+    ```cpp
+    --8<-- "examples/at__size_type_const.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/at__size_type_const.output"
+    ```
+
+??? example "Example: (2) access specified object element with bounds checking"
+
+    The example below shows how object elements can be read and written using `at()`. It also demonstrates the different
+    exceptions that can be thrown.
+        
+    ```cpp
+    --8<-- "examples/at__object_t_key_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/at__object_t_key_type.output"
+    ```
+
+??? example "Example: (2) access specified object element with bounds checking"
+
+    The example below shows how object elements can be read using `at()`. It also demonstrates the different exceptions
+    that can be thrown.
+    
+    ```cpp
+    --8<-- "examples/at__object_t_key_type_const.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/at__object_t_key_type_const.output"
+    ```
+
+??? example "Example: (3) access specified object element using string_view with bounds checking"
+
+    The example below shows how object elements can be read and written using `at()`. It also demonstrates the different
+    exceptions that can be thrown.
+    
+    ```cpp
+    --8<-- "examples/at__keytype.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/at__keytype.c++17.output"
+    ```
+
+??? example "Example: (3) access specified object element using string_view with bounds checking"
+
+    The example below shows how object elements can be read using `at()`. It also demonstrates the different exceptions
+    that can be thrown.
+    
+    ```cpp
+    --8<-- "examples/at__keytype_const.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/at__keytype_const.c++17.output"
+    ```
+
+??? example "Example: (4) access specified element via JSON Pointer"
+
+    The example below shows how object elements can be read and written using `at()`. It also demonstrates the different
+    exceptions that can be thrown.
+        
+    ```cpp
+    --8<-- "examples/at__json_pointer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/at__json_pointer.output"
+    ```
+
+??? example "Example: (4) access specified element via JSON Pointer"
+
+    The example below shows how object elements can be read using `at()`. It also demonstrates the different exceptions
+    that can be thrown.
+        
+    ```cpp
+    --8<-- "examples/at__json_pointer_const.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/at__json_pointer_const.output"
+    ```
+
+## See also
+
+- documentation on [checked access](../../features/element_access/checked_access.md)
+- see [`operator[]`](operator%5B%5D.md) for unchecked access by reference
+- see [`value`](value.md) for access with default value
+
+## Version history
+
+1. Added in version 1.0.0.
+2. Added in version 1.0.0.
+3. Added in version 3.11.0.
+4. Added in version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/back.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/back.md
new file mode 100644
index 00000000..1a715284
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/back.md
@@ -0,0 +1,65 @@
+# <small>nlohmann::basic_json::</small>back
+
+```cpp
+reference back();
+
+const_reference back() const;
+```
+
+Returns a reference to the last element in the container. For a JSON container `c`, the expression `c.back()` is
+equivalent to
+
+```cpp
+auto tmp = c.end();
+--tmp;
+return *tmp;
+```
+    
+## Return value
+
+In case of a structured type (array or object), a reference to the last element is returned. In case of number, string,
+boolean, or binary values, a reference to the value is returned.
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+If the JSON value is `#!json null`, exception
+[`invalid_iterator.214`](../../home/exceptions.md#jsonexceptioninvalid_iterator214) is thrown.
+
+## Complexity
+
+Constant.
+
+## Notes
+
+!!! info "Precondition"
+
+    The array or object must not be empty. Calling `back` on an empty array or object yields undefined behavior.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `back()`.
+     
+    ```cpp
+    --8<-- "examples/back.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/back.output"
+    ```
+
+## See also
+
+- [front](front.md) to access the first element
+
+## Version history
+
+- Added in version 1.0.0.
+- Adjusted code to return reference to binary values in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/basic_json.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/basic_json.md
new file mode 100644
index 00000000..e2e73612
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/basic_json.md
@@ -0,0 +1,402 @@
+# <small>nlohmann::basic_json::</small>basic_json
+
+```cpp
+// (1)
+basic_json(const value_t v);
+
+// (2)
+basic_json(std::nullptr_t = nullptr) noexcept;
+
+// (3)
+template<typename CompatibleType>
+basic_json(CompatibleType&& val) noexcept(noexcept(
+           JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
+                                      std::forward<CompatibleType>(val))));
+
+// (4)
+template<typename BasicJsonType>
+basic_json(const BasicJsonType& val);
+
+// (5)
+basic_json(initializer_list_t init,
+           bool type_deduction = true,
+           value_t manual_type = value_t::array);
+
+// (6)
+basic_json(size_type cnt, const basic_json& val);
+
+// (7)
+basic_json(iterator first, iterator last);
+basic_json(const_iterator first, const_iterator last);
+
+// (8)
+basic_json(const basic_json& other);
+
+// (9)
+basic_json(basic_json&& other) noexcept;
+```
+
+1. Create an empty JSON value with a given type. The value will be default initialized with an empty value which depends
+   on the type:
+   
+    | Value type | initial value  |
+    |------------|----------------|
+    | null       | `#!json null`  |
+    | boolean    | `#!json false` |
+    | string     | `#!json ""`    |
+    | number     | `#!json 0`     |
+    | object     | `#!json {}`    |
+    | array      | `#!json []`    |
+    | binary     | empty array    |
+
+    The postcondition of this constructor can be restored by calling [`clear()`](clear.md).
+
+2. Create a `#!json null` JSON value. It either takes a null pointer as parameter (explicitly creating `#!json null`)
+   or no parameter (implicitly creating `#!json null`). The passed null pointer itself is not read -- it is only used to
+   choose the right constructor.
+
+3. This is a "catch all" constructor for all compatible JSON types; that is, types for which a `to_json()` method
+   exists. The constructor forwards the parameter `val` to that method (to `json_serializer<U>::to_json` method with
+   `U = uncvref_t<CompatibleType>`, to be exact).
+   
+    Template type `CompatibleType` includes, but is not limited to, the following types:
+
+    - **arrays**: [`array_t`](array_t.md) and all kinds of compatible containers such as `std::vector`, `std::deque`,
+     `std::list`, `std::forward_list`, `std::array`, `std::valarray`, `std::set`, `std::unordered_set`, `std::multiset`,
+     and `std::unordered_multiset` with a `value_type` from which a `basic_json` value can be constructed.
+    - **objects**: [`object_t`](object_t.md) and all kinds of compatible associative containers such as `std::map`,
+     `std::unordered_map`, `std::multimap`, and `std::unordered_multimap` with a `key_type` compatible to `string_t`
+     and a `value_type` from which a `basic_json` value can be constructed.
+    - **strings**: `string_t`, string literals, and all compatible string containers can be used.
+    - **numbers**: [`number_integer_t`](number_integer_t.md), [`number_unsigned_t`](number_unsigned_t.md),
+     [`number_float_t`](number_float_t.md), and all convertible number types such as `int`, `size_t`, `int64_t`, `float`
+     or `double` can be used.
+    - **boolean**: `boolean_t` / `bool` can be used.
+    - **binary**: `binary_t` / `std::vector<uint8_t>` may be used; unfortunately because string literals cannot be
+     distinguished from binary character arrays by the C++ type system, all types compatible with `const char*` will be
+     directed to the string constructor instead. This is both for backwards compatibility, and due to the fact that a
+     binary type is not a standard JSON type.
+    
+    See the examples below.
+
+4. This is a constructor for existing `basic_json` types. It does not hijack copy/move constructors, since the parameter
+   has different template arguments than the current ones.
+
+    The constructor tries to convert the internal `m_value` of the parameter.
+
+5. Creates a JSON value of type array or object from the passed initializer list `init`. In case `type_deduction` is
+   `#!cpp true` (default), the type of the JSON value to be created is deducted from the initializer list `init`
+   according to the following rules:
+   
+    1. If the list is empty, an empty JSON object value `{}` is created.
+    2. If the list consists of pairs whose first element is a string, a JSON object value is created where the first
+      elements of the pairs are treated as keys and the second elements are as values.
+    3. In all other cases, an array is created.
+    
+    The rules aim to create the best fit between a C++ initializer list and JSON values. The rationale is as follows:
+    
+    1. The empty initializer list is written as `#!cpp {}` which is exactly an empty JSON object.
+    2. C++ has no way of describing mapped types other than to list a list of pairs. As JSON requires that keys must be
+       of type string, rule 2 is the weakest constraint one can pose on initializer lists to interpret them as an
+       object.
+    3. In all other cases, the initializer list could not be interpreted as JSON object type, so interpreting it as JSON
+       array type is safe.
+    
+    With the rules described above, the following JSON values cannot be expressed by an initializer list:
+    
+    - the empty array (`#!json []`): use `array(initializer_list_t)` with an empty initializer list in this case
+    - arrays whose elements satisfy rule 2: use `array(initializer_list_t)` with the same initializer list in this case
+   
+    Function [`array()`](array.md) and [`object()`](object.md) force array and object creation from initializer lists,
+    respectively.
+        
+6. Constructs a JSON array value by creating `cnt` copies of a passed value. In case `cnt` is `0`, an empty array is
+   created.
+
+7. Constructs the JSON value with the contents of the range `[first, last)`. The semantics depends on the different
+   types a JSON value can have:
+
+    - In case of a `#!json null` type, [invalid_iterator.206](../../home/exceptions.md#jsonexceptioninvalid_iterator206)
+      is thrown.
+    - In case of other primitive types (number, boolean, or string), `first` must be `begin()` and `last` must be
+      `end()`. In this case, the value is copied. Otherwise,
+      [`invalid_iterator.204`](../../home/exceptions.md#jsonexceptioninvalid_iterator204) is thrown.
+    - In case of structured types (array, object), the constructor behaves as similar versions for `std::vector` or
+      `std::map`; that is, a JSON array or object is constructed from the values in the range.
+
+8. Creates a copy of a given JSON value.
+
+9. Move constructor. Constructs a JSON value with the contents of the given value `other` using move semantics. It
+   "steals" the resources from `other` and leaves it as JSON `#!json null` value.
+
+## Template parameters
+
+`CompatibleType`
+:   a type such that:
+
+    - `CompatibleType` is not derived from `std::istream`,
+    - `CompatibleType` is not `basic_json` (to avoid hijacking copy/move constructors),
+    - `CompatibleType` is not a different `basic_json` type (i.e. with different template arguments)
+    - `CompatibleType` is not a `basic_json` nested type (e.g., `json_pointer`, `iterator`, etc.)
+    - `json_serializer<U>` (with `U = uncvref_t<CompatibleType>`) has a `to_json(basic_json_t&, CompatibleType&&)`
+       method
+
+`BasicJsonType`:
+:   a type such that:
+
+    - `BasicJsonType` is a `basic_json` type.
+    - `BasicJsonType` has different template arguments than `basic_json_t`.
+
+`U`:
+:   `uncvref_t<CompatibleType>`
+
+## Parameters
+
+`v` (in)
+:   the type of the value to create
+
+`val` (in)
+:   the value to be forwarded to the respective constructor
+
+`init` (in)
+:   initializer list with JSON values
+
+`type_deduction` (in)
+:   internal parameter; when set to `#!cpp true`, the type of the JSON value is deducted from the initializer list
+    `init`; when set to `#!cpp false`, the type provided via `manual_type` is forced. This mode is used by the functions
+    `array(initializer_list_t)` and `object(initializer_list_t)`.
+
+`manual_type` (in)
+:   internal parameter; when `type_deduction` is set to `#!cpp false`, the created JSON value will use the provided type
+    (only `value_t::array` and `value_t::object` are valid); when `type_deduction` is set to `#!cpp true`, this
+    parameter has no effect
+
+`cnt` (in)
+:   the number of JSON copies of `val` to create
+
+`first` (in)
+:   begin of the range to copy from (included)
+
+`last` (in)
+:   end of the range to copy from (excluded)
+
+`other` (in)
+:   the JSON value to copy/move
+
+## Exception safety
+
+1. Strong guarantee: if an exception is thrown, there are no changes to any JSON value.
+2. No-throw guarantee: this constructor never throws exceptions.
+3. Depends on the called constructor. For types directly supported by the library (i.e., all types for which no
+   `to_json()` function was provided), strong guarantee holds: if an exception is thrown, there are no changes to any
+   JSON value.
+4. Depends on the called constructor. For types directly supported by the library (i.e., all types for which no
+   `to_json()` function was provided), strong guarantee holds: if an exception is thrown, there are no changes to any
+   JSON value.
+5. Strong guarantee: if an exception is thrown, there are no changes to any JSON value.
+6. Strong guarantee: if an exception is thrown, there are no changes to any JSON value.
+7. Strong guarantee: if an exception is thrown, there are no changes to any JSON value.
+8. Strong guarantee: if an exception is thrown, there are no changes to any JSON value.
+9. No-throw guarantee: this constructor never throws exceptions.
+
+## Exceptions
+
+1. (none)
+2. The function does not throw exceptions.
+3. (none)
+4. (none)
+5. The function can throw the following exceptions:
+    - Throws [`type_error.301`](../../home/exceptions.md#jsonexceptiontype_error301) if `type_deduction` is
+      `#!cpp false`, `manual_type` is `value_t::object`, but `init` contains an element which is not a pair whose first
+      element is a string. In this case, the constructor could not create an object. If `type_deduction` would have been
+      `#!cpp true`, an array would have been created. See `object(initializer_list_t)` for an example.
+6. (none)
+7. The function can throw the following exceptions:
+    - Throws [`invalid_iterator.201`](../../home/exceptions.md#jsonexceptioninvalid_iterator201) if iterators `first`
+      and `last` are not compatible (i.e., do not belong to the same JSON value). In this case, the range
+      `[first, last)` is undefined.
+    - Throws [`invalid_iterator.204`](../../home/exceptions.md#jsonexceptioninvalid_iterator204) if iterators `first`
+      and `last` belong to a primitive type (number, boolean, or string), but `first` does not point to the first
+      element anymore. In this case, the range `[first, last)` is undefined. See example code below.
+    - Throws [`invalid_iterator.206`](../../home/exceptions.md#jsonexceptioninvalid_iterator206) if iterators `first`
+      and `last` belong to a `#!json null` value. In this case, the range `[first, last)` is undefined.
+8. (none)
+9. The function does not throw exceptions.
+
+## Complexity
+
+1. Constant.
+2. Constant.
+3. Usually linear in the size of the passed `val`, also depending on the implementation of the called `to_json()`
+   method.
+4. Usually linear in the size of the passed `val`, also depending on the implementation of the called `to_json()`
+   method.
+5. Linear in the size of the initializer list `init`.
+6. Linear in `cnt`.
+7. Linear in distance between `first` and `last`.
+8. Linear in the size of `other`.
+9. Constant.
+
+## Notes
+
+- Overload 5:
+
+    !!! note "Empty initializer list"
+
+        When used without parentheses around an empty initializer list, `basic_json()` is called instead of this
+        function, yielding the JSON `#!json null` value.
+
+- Overload 7:
+
+    !!! info "Preconditions"
+
+        - Iterators `first` and `last` must be initialized. **This precondition is enforced with a
+          [runtime assertion](../../features/assertions.md).
+        - Range `[first, last)` is valid. Usually, this precondition cannot be checked efficiently. Only certain edge
+          cases are detected; see the description of the exceptions above. A violation of this precondition yields
+          undefined behavior.
+    
+    !!! danger "Runtime assertion"
+
+        A precondition is enforced with a [runtime assertion](../../features/assertions.md).
+    
+- Overload 8:
+
+    !!! info "Postcondition"
+
+        `#!cpp *this == other`
+
+- Overload 9:
+
+    !!! info "Postconditions"
+
+        - `#!cpp `*this` has the same value as `other` before the call.
+        - `other` is a JSON `#!json null` value
+
+## Examples
+
+??? example "Example: (1) create an empty value with a given type"
+
+    The following code shows the constructor for different `value_t` values.
+     
+    ```cpp
+    --8<-- "examples/basic_json__value_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__value_t.output"
+    ```
+
+??? example "Example: (2) create a `#!json null` object"
+
+    The following code shows the constructor with and without a null pointer parameter.
+     
+    ```cpp
+    --8<-- "examples/basic_json__nullptr_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__nullptr_t.output"
+    ```
+
+??? example "Example: (3) create a JSON value from compatible types"
+
+    The following code shows the constructor with several compatible types.
+     
+    ```cpp
+    --8<-- "examples/basic_json__CompatibleType.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__CompatibleType.output"
+    ```
+
+    Note the output is platform-dependent.
+
+??? example "Example: (5) create a container (array or object) from an initializer list"
+
+    The example below shows how JSON values are created from initializer lists.
+     
+    ```cpp
+    --8<-- "examples/basic_json__list_init_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__list_init_t.output"
+    ```
+
+??? example "Example: (6) construct an array with count copies of given value"
+
+    The following code shows examples for creating arrays with several copies of a given value.
+     
+    ```cpp
+    --8<-- "examples/basic_json__size_type_basic_json.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__size_type_basic_json.output"
+    ```
+
+??? example "Example: (7) construct a JSON container given an iterator range"
+
+    The example below shows several ways to create JSON values by specifying a subrange with iterators.
+     
+    ```cpp
+    --8<-- "examples/basic_json__InputIt_InputIt.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__InputIt_InputIt.output"
+    ```
+
+??? example "Example: (8) copy constructor"
+
+    The following code shows an example for the copy constructor.
+     
+    ```cpp
+    --8<-- "examples/basic_json__basic_json.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__basic_json.output"
+    ```
+
+??? example "Example: (9) move constructor"
+
+    The code below shows the move constructor explicitly called via `std::move`.
+     
+    ```cpp
+    --8<-- "examples/basic_json__moveconstructor.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__moveconstructor.output"
+    ```
+
+## Version history
+
+1. Since version 1.0.0.
+2. Since version 1.0.0.
+3. Since version 2.1.0.
+4. Since version 3.2.0.
+5. Since version 1.0.0.
+6. Since version 1.0.0.
+7. Since version 1.0.0.
+8. Since version 1.0.0.
+9. Since version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/begin.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/begin.md
new file mode 100644
index 00000000..ef623a5f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/begin.md
@@ -0,0 +1,42 @@
+# <small>nlohmann::basic_json::</small>begin
+
+```cpp
+iterator begin() noexcept;
+const_iterator begin() const noexcept;
+```
+
+Returns an iterator to the first element.
+
+![Illustration from cppreference.com](../../images/range-begin-end.svg)
+
+## Return value
+
+iterator to the first element
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `begin()`.
+    
+    ```cpp
+    --8<-- "examples/begin.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/begin.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/binary.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/binary.md
new file mode 100644
index 00000000..ce45d8a0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/binary.md
@@ -0,0 +1,66 @@
+# <small>nlohmann::basic_json::</small>binary
+
+```cpp
+// (1)
+static basic_json binary(const typename binary_t::container_type& init);
+static basic_json binary(typename binary_t::container_type&& init);
+
+// (2)
+static basic_json binary(const typename binary_t::container_type& init,
+                         std::uint8_t subtype);
+static basic_json binary(typename binary_t::container_type&& init,
+                         std::uint8_t subtype);
+```
+
+1. Creates a JSON binary array value from a given binary container.
+2. Creates a JSON binary array value from a given binary container with subtype.
+ 
+Binary values are part of various binary formats, such as CBOR, MessagePack, and BSON. This constructor is used to
+create a value for serialization to those formats.
+
+## Parameters
+
+`init` (in)
+:   container containing bytes to use as binary type
+
+`subtype` (in)
+:   subtype to use in CBOR, MessagePack, and BSON
+
+## Return value
+
+JSON binary array value
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Linear in the size of `init`; constant for `typename binary_t::container_type&& init` versions.
+
+## Notes
+
+Note, this function exists because of the difficulty in correctly specifying the correct template overload in the
+standard value ctor, as both JSON arrays and JSON binary arrays are backed with some form of a `std::vector`. Because
+JSON binary arrays are a non-standard extension it was decided that it would be best to prevent automatic initialization
+of a binary array type, for backwards compatibility and so it does not happen on accident.
+
+## Examples
+
+??? example
+
+    The following code shows how to create a binary value.
+     
+    ```cpp
+    --8<-- "examples/binary.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/binary.output"
+    ```
+
+## Version history
+
+- Added in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/binary_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/binary_t.md
new file mode 100644
index 00000000..705c92cb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/binary_t.md
@@ -0,0 +1,89 @@
+# <small>nlohmann::basic_json::</small>binary_t
+
+```cpp
+using binary_t = byte_container_with_subtype<BinaryType>;
+```
+
+This type is a type designed to carry binary data that appears in various serialized formats, such as CBOR's Major Type
+2, MessagePack's bin, and BSON's generic binary subtype. This type is NOT a part of standard JSON and exists solely for
+compatibility with these binary types. As such, it is simply defined as an ordered sequence of zero or more byte values.
+
+Additionally, as an implementation detail, the subtype of the binary data is carried around as a `std::uint64_t`, which
+is compatible with both of the binary data formats that use binary subtyping, (though the specific numbering is
+incompatible with each other, and it is up to the user to translate between them). The subtype is added to `BinaryType`
+via the helper type [byte_container_with_subtype](../byte_container_with_subtype/index.md).
+
+[CBOR's RFC 7049](https://tools.ietf.org/html/rfc7049) describes this type as:
+> Major type 2: a byte string. The string's length in bytes is represented following the rules for positive integers
+> (major type 0).
+
+[MessagePack's documentation on the bin type
+family](https://github.com/msgpack/msgpack/blob/master/spec.md#bin-format-family) describes this type as:
+> Bin format family stores a byte array in 2, 3, or 5 bytes of extra bytes in addition to the size of the byte array.
+
+[BSON's specifications](http://bsonspec.org/spec.html) describe several binary types; however, this type is intended to
+represent the generic binary type which has the description:
+> Generic binary subtype - This is the most commonly used binary subtype and should be the 'default' for drivers and
+> tools.
+
+None of these impose any limitations on the internal representation other than the basic unit of storage be some type of
+array whose parts are decomposable into bytes.
+
+The default representation of this binary format is a `#!cpp std::vector<std::uint8_t>`, which is a very common way to
+represent a byte array in modern C++.
+
+## Template parameters
+
+`BinaryType`
+:   container type to store arrays
+
+## Notes
+
+#### Default type
+
+The default values for `BinaryType` is `#!cpp std::vector<std::uint8_t>`.
+
+#### Storage
+
+Binary Arrays are stored as pointers in a `basic_json` type. That is, for any access to array values, a pointer of the
+type `#!cpp binary_t*` must be dereferenced.
+
+#### Notes on subtypes
+
+- CBOR
+    - Binary values are represented as byte strings. Subtypes are written as tags.
+
+- MessagePack
+    - If a subtype is given and the binary array contains exactly 1, 2, 4, 8, or 16 elements, the fixext family (fixext1,
+      fixext2, fixext4, fixext8) is used. For other sizes, the ext family (ext8, ext16, ext32) is used. The subtype is
+      then added as signed 8-bit integer.
+    - If no subtype is given, the bin family (bin8, bin16, bin32) is used.
+
+- BSON
+    - If a subtype is given, it is used and added as unsigned 8-bit integer.
+    - If no subtype is given, the generic binary subtype 0x00 is used.
+
+## Examples
+
+??? example
+
+    The following code shows that `binary_t` is by default, a typedef to
+    `#!cpp nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>`.
+     
+    ```cpp
+    --8<-- "examples/binary_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/binary_t.output"
+    ```
+
+## See also
+
+- [byte_container_with_subtype](../byte_container_with_subtype/index.md)
+
+## Version history
+
+- Added in version 3.8.0. Changed type of subtype to `std::uint64_t` in version 3.10.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/boolean_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/boolean_t.md
new file mode 100644
index 00000000..e3a78302
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/boolean_t.md
@@ -0,0 +1,42 @@
+# <small>nlohmann::basic_json::</small>boolean_t
+
+```cpp
+using boolean_t = BooleanType;
+```
+
+The type used to store JSON booleans.
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) implicitly describes a boolean as a type which differentiates the two
+literals `#!json true` and `#!json false`.
+
+To store objects in C++, a type is defined by the template parameter  `BooleanType` which chooses the type to use.
+
+## Notes
+
+#### Default type
+
+With the default values for `BooleanType` (`#!cpp bool`), the default value for `boolean_t` is `#!cpp bool`.
+
+#### Storage
+
+Boolean values are stored directly inside a `basic_json` type.
+
+## Examples
+
+??? example
+
+    The following code shows that `boolean_t` is by default, a typedef to `#!cpp bool`.
+     
+    ```cpp
+    --8<-- "examples/boolean_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/boolean_t.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cbegin.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cbegin.md
new file mode 100644
index 00000000..06504fee
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cbegin.md
@@ -0,0 +1,41 @@
+# <small>nlohmann::basic_json::</small>cbegin
+
+```cpp
+const_iterator cbegin() const noexcept;
+```
+
+Returns an iterator to the first element.
+
+![Illustration from cppreference.com](../../images/range-begin-end.svg)
+
+## Return value
+
+iterator to the first element
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `cbegin()`.
+    
+    ```cpp
+    --8<-- "examples/cbegin.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/cbegin.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cbor_tag_handler_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cbor_tag_handler_t.md
new file mode 100644
index 00000000..e19c3edd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cbor_tag_handler_t.md
@@ -0,0 +1,42 @@
+# <small>nlohmann::basic_json::</small>cbor_tag_handler_t
+
+```cpp
+enum class cbor_tag_handler_t
+{
+    error,
+    ignore,
+    store
+};
+```
+
+This enumeration is used in the [`from_cbor`](from_cbor.md) function to choose how to treat tags:
+
+error
+:   throw a `parse_error` exception in case of a tag
+
+ignore
+:   ignore tags
+
+store
+:   store tagged values as binary container with subtype (for bytes 0xd8..0xdb)
+
+## Examples
+
+??? example
+
+    The example below shows how the different values of the `cbor_tag_handler_t` influence the behavior of
+    [`from_cbor`](from_cbor.md) when reading a tagged byte string.
+
+    ```cpp
+    --8<-- "examples/cbor_tag_handler_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/cbor_tag_handler_t.output"
+    ```
+
+## Version history
+
+- Added in version 3.9.0. Added value `store` in 3.10.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cend.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cend.md
new file mode 100644
index 00000000..3f3aa949
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/cend.md
@@ -0,0 +1,41 @@
+# <small>nlohmann::basic_json::</small>cend
+
+```cpp
+const_iterator cend() const noexcept;
+```
+
+Returns an iterator to one past the last element.
+
+![Illustration from cppreference.com](../../images/range-begin-end.svg)
+
+## Return value
+
+iterator one past the last element
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `cend()`.
+    
+    ```cpp
+    --8<-- "examples/cend.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/cend.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/clear.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/clear.md
new file mode 100644
index 00000000..ff04b08e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/clear.md
@@ -0,0 +1,58 @@
+# <small>nlohmann::basic_json::</small>clear
+
+```cpp
+void clear() noexcept;
+```
+
+Clears the content of a JSON value and resets it to the default value as if [`basic_json(value_t)`](basic_json.md) would
+have been called with the current value type from [`type()`](type.md):
+
+| Value type | initial value        |
+|------------|----------------------|
+| null       | `null`               |
+| boolean    | `false`              |
+| string     | `""`                 |
+| number     | `0`                  |
+| binary     | An empty byte vector |
+| object     | `{}`                 |
+| array      | `[]`                 |
+
+Has the same effect as calling
+
+```.cpp
+*this = basic_json(type());
+```
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Linear in the size of the JSON value.
+
+## Notes
+
+All iterators, pointers and references related to this container are invalidated.
+
+## Examples
+
+??? example
+
+    The example below shows the effect of `clear()` to different
+    JSON types.
+    
+    ```cpp
+    --8<-- "examples/clear.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/clear.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Added support for binary types in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/contains.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/contains.md
new file mode 100644
index 00000000..ba2c3df2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/contains.md
@@ -0,0 +1,118 @@
+# <small>nlohmann::basic_json::</small>contains
+
+```cpp
+// (1)
+bool contains(const typename object_t::key_type& key) const;
+
+// (2)
+template<typename KeyType>
+bool contains(KeyType&& key) const;
+
+// (3)
+bool contains(const json_pointer& ptr) const;
+```
+
+1. Check whether an element exists in a JSON object with a key equivalent to `key`. If the element is not found or the 
+   JSON value is not an object, `#!cpp false` is returned.
+2. See 1. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
+   `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+3. Check whether the given JSON pointer `ptr` can be resolved in the current JSON value.
+
+## Template parameters
+
+`KeyType`
+:   A type for an object key other than [`json_pointer`](../json_pointer/index.md) that is comparable with
+    [`string_t`](string_t.md) using  [`object_comparator_t`](object_comparator_t.md).
+    This can also be a string view (C++17).
+
+## Parameters
+
+`key` (in)
+:   key value to check its existence.
+
+`ptr` (in)
+:   JSON pointer to check its existence.
+
+## Return value
+
+1. `#!cpp true` if an element with specified `key` exists. If no such element with such key is found or the JSON value
+   is not an object, `#!cpp false` is returned.
+2. See 1.
+3. `#!cpp true` if the JSON pointer can be resolved to a stored value, `#!cpp false` otherwise.
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+1. The function does not throw exceptions.
+2. The function does not throw exceptions.
+3. The function can throw the following exceptions:
+    - Throws [`parse_error.106`](../../home/exceptions.md#jsonexceptionparse_error106) if an array index begins with
+      `0`.
+    - Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if an array index was not a
+      number.
+
+## Complexity
+
+Logarithmic in the size of the JSON object.
+
+## Notes
+
+- This method always returns `#!cpp false` when executed on a JSON type that is not an object.
+- This method can be executed on any JSON value type.
+
+!!! info "Postconditions"
+
+    If `#!cpp j.contains(x)` returns `#!c true` for a key or JSON pointer `x`, then it is safe to call `j[x]`.
+
+## Examples
+
+??? example "Example: (1) check with key"
+
+    The example shows how `contains()` is used.
+    
+    ```cpp
+    --8<-- "examples/contains__object_t_key_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/contains__object_t_key_type.output"
+    ```
+
+??? example "Example: (2) check with key using string_view"
+
+    The example shows how `contains()` is used.
+    
+    ```cpp
+    --8<-- "examples/contains__keytype.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/contains__keytype.c++17.output"
+    ```
+
+??? example "Example: (3) check with JSON pointer"
+
+    The example shows how `contains()` is used.
+    
+    ```cpp
+    --8<-- "examples/contains__json_pointer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/contains__json_pointer.output"
+    ```
+
+## Version history
+
+1. Added in version 3.11.0.
+2. Added in version 3.6.0. Extended template `KeyType` to support comparable types in version 3.11.0.
+3. Added in version 3.7.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/count.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/count.md
new file mode 100644
index 00000000..4f3a3105
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/count.md
@@ -0,0 +1,78 @@
+# <small>nlohmann::basic_json::</small>count
+
+```cpp
+// (1)
+size_type count(const typename object_t::key_type& key) const;
+
+// (2)
+template<typename KeyType>
+size_type count(KeyType&& key) const;
+```
+
+1. Returns the number of elements with key `key`. If `ObjectType` is the default `std::map` type, the return value will
+   always be `0` (`key` was not found) or `1` (`key` was found).
+2. See 1. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
+   `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+
+## Template parameters
+
+`KeyType`
+:   A type for an object key other than [`json_pointer`](../json_pointer/index.md) that is comparable with
+    [`string_t`](string_t.md) using  [`object_comparator_t`](object_comparator_t.md).
+    This can also be a string view (C++17).
+
+## Parameters
+
+`key` (in)
+:   key value of the element to count.
+    
+## Return value
+
+Number of elements with key `key`. If the JSON value is not an object, the return value will be `0`.
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Complexity
+
+Logarithmic in the size of the JSON object.
+
+## Notes
+
+This method always returns `0` when executed on a JSON type that is not an object.
+
+## Examples
+
+??? example "Example: (1) count number of elements"
+
+    The example shows how `count()` is used.
+    
+    ```cpp
+    --8<-- "examples/count__object_t_key_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/count__object_t_key_type.output"
+    ```
+
+??? example "Example: (2) count number of elements using string_view"
+
+    The example shows how `count()` is used.
+    
+    ```cpp
+    --8<-- "examples/count__keytype.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/count__keytype.c++17.output"
+    ```
+
+## Version history
+
+1. Added in version 3.11.0.
+2. Added in version 1.0.0. Changed parameter `key` type to `KeyType&&` in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/crbegin.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/crbegin.md
new file mode 100644
index 00000000..7af5ecae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/crbegin.md
@@ -0,0 +1,41 @@
+# <small>nlohmann::basic_json::</small>crbegin
+
+```cpp
+const_reverse_iterator crbegin() const noexcept;
+```
+
+Returns an iterator to the reverse-beginning; that is, the last element.
+
+![Illustration from cppreference.com](../../images/range-rbegin-rend.svg)
+
+## Return value
+
+reverse iterator to the first element
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `crbegin()`.
+    
+    ```cpp
+    --8<-- "examples/crbegin.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/crbegin.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/crend.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/crend.md
new file mode 100644
index 00000000..0e6bc847
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/crend.md
@@ -0,0 +1,42 @@
+# <small>nlohmann::basic_json::</small>crend
+
+```cpp
+const_reverse_iterator crend() const noexcept;
+```
+
+Returns an iterator to the reverse-end; that is, one before the first element. This element acts as a placeholder,
+attempting to access it results in undefined behavior.
+
+![Illustration from cppreference.com](../../images/range-rbegin-rend.svg)
+
+## Return value
+
+reverse iterator to the element following the last element
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `eend()`.
+    
+    ```cpp
+    --8<-- "examples/crend.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/crend.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/default_object_comparator_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/default_object_comparator_t.md
new file mode 100644
index 00000000..8a237f66
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/default_object_comparator_t.md
@@ -0,0 +1,35 @@
+# <small>nlohmann::basic_json::</small>default_object_comparator_t
+
+```cpp
+using default_object_comparator_t = std::less<StringType>;  // until C++14
+
+using default_object_comparator_t = std::less<>;            // since C++14
+```
+
+The default comparator used by [`object_t`](object_t.md).
+
+Since C++14 a transparent comparator is used which prevents unnecessary string construction
+when looking up a key in an object.
+
+The actual comparator used depends on [`object_t`](object_t.md) and can be obtained via
+[`object_comparator_t`](object_comparator_t.md).
+
+## Examples
+
+??? example
+
+    The example below demonstrates the default comparator.
+
+    ```cpp
+    --8<-- "examples/default_object_comparator_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/default_object_comparator_t.output"
+    ```
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/diff.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/diff.md
new file mode 100644
index 00000000..4e840684
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/diff.md
@@ -0,0 +1,62 @@
+# <small>nlohmann::basic_json::</small>diff
+
+```cpp
+static basic_json diff(const basic_json& source,
+                       const basic_json& target);
+```
+
+Creates a [JSON Patch](http://jsonpatch.com) so that value `source` can be changed into the value `target` by calling
+[`patch`](patch.md) function.
+
+For two JSON values `source` and `target`, the following code yields always `#!cpp true`:
+```cpp
+source.patch(diff(source, target)) == target;
+```
+
+## Parameters
+
+`source` (in)
+:   JSON value to compare from
+
+`target` (in)
+:   JSON value to compare against
+
+## Return value
+
+a JSON patch to convert the `source` to `target`
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Linear in the lengths of `source` and `target`.
+
+## Notes
+
+Currently, only `remove`, `add`, and `replace` operations are generated.
+          
+## Examples
+
+??? example
+
+    The following code shows how a JSON patch is created as a diff for two JSON values.
+     
+    ```cpp
+    --8<-- "examples/diff.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/diff.output"
+    ```
+
+## See also
+
+- [RFC 6902 (JSON Patch)](https://tools.ietf.org/html/rfc6902)
+
+## Version history
+
+- Added in version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/dump.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/dump.md
new file mode 100644
index 00000000..41adb154
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/dump.md
@@ -0,0 +1,79 @@
+# <small>nlohmann::basic_json::</small>dump
+
+```cpp
+string_t dump(const int indent = -1,
+              const char indent_char = ' ',
+              const bool ensure_ascii = false,
+              const error_handler_t error_handler = error_handler_t::strict) const;
+```
+
+Serialization function for JSON values. The function tries to mimic Python's
+[`json.dumps()` function](https://docs.python.org/2/library/json.html#json.dump), and currently  supports its `indent`
+and `ensure_ascii` parameters.
+    
+## Parameters
+
+`indent` (in)
+:   If `indent` is nonnegative, then array elements and object members will be pretty-printed with that indent level. An
+    indent level of `0` will only insert newlines. `-1` (the default) selects the most compact representation.
+
+`indent_char` (in)
+:   The character to use for indentation if `indent` is greater than `0`. The default is ` ` (space).
+
+`ensure_ascii` (in)
+:   If `ensure_ascii` is true, all non-ASCII characters in the output are escaped with `\uXXXX` sequences, and the
+    result consists of ASCII characters only.
+
+`error_handler` (in)
+:   how to react on decoding errors; there are three possible values (see [`error_handler_t`](error_handler_t.md):
+    `strict` (throws and exception in case a decoding error occurs; default), `replace` (replace invalid UTF-8 sequences
+    with U+FFFD), and `ignore` (ignore invalid UTF-8 sequences during serialization; all bytes are copied to the output
+    unchanged)).
+    
+## Return value
+
+string containing the serialization of the JSON value
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes to any JSON value.
+
+## Exceptions
+
+Throws [`type_error.316`](../../home/exceptions.md#jsonexceptiontype_error316) if a string stored inside the JSON value
+is not UTF-8 encoded and `error_handler` is set to `strict`
+
+## Complexity
+
+Linear.
+
+## Notes
+
+Binary values are serialized as object containing two keys:
+
+- "bytes": an array of bytes as integers
+- "subtype": the subtype as integer or `#!json null` if the binary has no subtype
+
+## Examples
+
+??? example
+
+    The following example shows the effect of different `indent`, `indent_char`, and `ensure_ascii` parameters to the
+    result of the serialization.
+
+    ```cpp
+    --8<-- "examples/dump.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/dump.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Indentation character `indent_char`, option `ensure_ascii` and exceptions added in version 3.0.0.
+- Error handlers added in version 3.4.0.
+- Serialization of binary values added in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/emplace.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/emplace.md
new file mode 100644
index 00000000..cf637d62
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/emplace.md
@@ -0,0 +1,61 @@
+# <small>nlohmann::basic_json::</small>emplace
+
+```cpp
+template<class... Args>
+std::pair<iterator, bool> emplace(Args&& ... args);
+```
+
+Inserts a new element into a JSON object constructed in-place with the given `args` if there is no element with the key
+in the container. If the function is called on a JSON null value, an empty object is created before appending the value
+created from `args`.
+
+## Template parameters
+
+`Args`
+:   compatible types to create a `basic_json` object
+
+## Iterator invalidation
+
+For [`ordered_json`](../ordered_json.md), adding a value to an object can yield a reallocation, in which case all
+iterators (including the `end()` iterator) and all references to the elements are invalidated.
+
+## Parameters
+
+`args` (in)
+:   arguments to forward to a constructor of `basic_json`
+
+## Return value
+
+a pair consisting of an iterator to the inserted element, or the already-existing element if no insertion happened, and
+a `#!cpp bool` denoting whether the insertion took place.
+
+## Exceptions
+
+Throws [`type_error.311`](../../home/exceptions.md#jsonexceptiontype_error311) when called on a type other than JSON
+object or `#!json null`; example: `"cannot use emplace() with number"`
+
+## Complexity
+
+Logarithmic in the size of the container, O(log(`size()`)).
+
+## Examples
+
+??? example
+
+    The example shows how `emplace()` can be used to add elements to a JSON object. Note how the `#!json null` value was
+    silently converted to a JSON object. Further note how no value is added if there was already one value stored with
+    the same key.
+            
+    ```cpp
+    --8<-- "examples/emplace.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/emplace.output"
+    ```
+
+## Version history
+
+- Since version 2.0.8.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/emplace_back.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/emplace_back.md
new file mode 100644
index 00000000..21829c21
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/emplace_back.md
@@ -0,0 +1,65 @@
+# <small>nlohmann::basic_json::</small>emplace_back
+
+```cpp
+template<class... Args>
+reference emplace_back(Args&& ... args);
+```
+
+Creates a JSON value from the passed parameters `args` to the end of the JSON value. If the function is called on a JSON
+`#!json null` value, an empty array is created before appending the value created from `args`.
+
+## Template parameters
+
+`Args`
+:   compatible types to create a `basic_json` object
+
+## Iterator invalidation
+
+By adding an element to the end of the array, a reallocation can happen, in which case all iterators (including the
+[`end()`](end.md) iterator) and all references to the elements are invalidated. Otherwise, only the [`end()`](end.md)
+iterator is invalidated.
+
+## Parameters
+
+`args` (in)
+:   arguments to forward to a constructor of `basic_json`
+
+## Return value
+
+reference to the inserted element
+
+## Exceptions
+
+Throws [`type_error.311`](../../home/exceptions.md#jsonexceptiontype_error311) when called on a type other than JSON
+array or `#!json null`; example: `"cannot use emplace_back() with number"`
+
+## Complexity
+
+Amortized constant.
+
+## Examples
+
+??? example
+
+    The example shows how `emplace_back()` can be used to add elements to a JSON array. Note how the `null` value was
+    silently converted to a JSON array.
+        
+    ```cpp
+    --8<-- "examples/emplace_back.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/emplace_back.output"
+    ```
+
+## See also
+
+- [operator+=](operator+=.md) add a value to an array/object
+- [push_back](push_back.md) add a value to an array/object
+
+## Version history
+
+- Since version 2.0.8.
+- Returns reference since 3.7.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/empty.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/empty.md
new file mode 100644
index 00000000..26bf6e9a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/empty.md
@@ -0,0 +1,66 @@
+# <small>nlohmann::basic_json::</small>empty
+
+```cpp
+bool empty() const noexcept;
+```
+
+Checks if a JSON value has no elements (i.e. whether its [`size()`](size.md) is `0`).
+    
+## Return value
+
+The return value depends on the different types and is defined as follows:
+
+| Value type | return value                           |
+|------------|----------------------------------------|
+| null       | `#!cpp true`                           |
+| boolean    | `#!cpp false`                          |
+| string     | `#!cpp false`                          |
+| number     | `#!cpp false`                          |
+| binary     | `#!cpp false`                          |
+| object     | result of function `object_t::empty()` |
+| array      | result of function `array_t::empty()`  |
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant, as long as [`array_t`](array_t.md) and [`object_t`](object_t.md) satisfy the
+[Container](https://en.cppreference.com/w/cpp/named_req/Container) concept; that is, their `empty()` functions have
+constant complexity.
+
+## Possible implementation
+
+```cpp
+bool empty() const noexcept
+{
+    return size() == 0;
+}
+```
+
+## Notes
+
+This function does not return whether a string stored as JSON value is empty -- it returns whether the JSON container
+itself is empty which is `#!cpp false` in the case of a string.
+
+## Examples
+
+??? example
+
+    The following code uses `empty()` to check if a JSON object contains any elements.
+    
+    ```cpp
+    --8<-- "examples/empty.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/empty.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended to return `#!cpp false` for binary types in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/end.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/end.md
new file mode 100644
index 00000000..179ce9e6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/end.md
@@ -0,0 +1,42 @@
+# <small>nlohmann::basic_json::</small>end
+
+```cpp
+iterator end() noexcept;
+const_iterator end() const noexcept;
+```
+
+Returns an iterator to one past the last element.
+
+![Illustration from cppreference.com](../../images/range-begin-end.svg)
+
+## Return value
+
+iterator one past the last element
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `end()`.
+    
+    ```cpp
+    --8<-- "examples/end.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/end.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/erase.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/erase.md
new file mode 100644
index 00000000..1187995b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/erase.md
@@ -0,0 +1,211 @@
+# <small>nlohmann::basic_json::</small>erase
+
+```cpp
+// (1)
+iterator erase(iterator pos);
+const_iterator erase(const_iterator pos);
+
+// (2)
+iterator erase(iterator first, iterator last);
+const_iterator erase(const_iterator first, const_iterator last);
+
+// (3)
+size_type erase(const typename object_t::key_type& key);
+
+// (4)
+template<typename KeyType>
+size_type erase(KeyType&& key);
+
+// (5)
+void erase(const size_type idx);
+```
+
+1. Removes an element from a JSON value specified by iterator `pos`. The iterator `pos` must be valid and
+   dereferenceable. Thus, the `end()` iterator (which is valid, but is not dereferenceable) cannot be used as a value for
+   `pos`.
+   
+    If called on a primitive type other than `#!json null`, the resulting JSON value will be `#!json null`.
+
+2. Remove an element range specified by `[first; last)` from a JSON value. The iterator `first` does not need to be
+   dereferenceable if `first == last`: erasing an empty range is a no-op.
+   
+    If called on a primitive type other than `#!json null`, the resulting JSON value will be `#!json null`.
+
+3. Removes an element from a JSON object by key.
+
+4. See 3. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
+   `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+
+5. Removes an element from a JSON array by index.
+
+## Template parameters
+
+`KeyType`
+:   A type for an object key other than [`json_pointer`](../json_pointer/index.md) that is comparable with
+    [`string_t`](string_t.md) using  [`object_comparator_t`](object_comparator_t.md).
+    This can also be a string view (C++17).
+
+## Parameters
+
+`pos` (in)
+:   iterator to the element to remove
+
+`first` (in)
+:   iterator to the beginning of the range to remove
+
+`last` (in)
+:   iterator past the end of the range to remove
+
+`key` (in)
+:   object key of the elements to remove
+    
+`idx` (in)
+:   array index of the element to remove
+    
+## Return value
+
+1. Iterator following the last removed element. If the iterator `pos` refers to the last element, the `end()` iterator
+   is returned.
+2. Iterator following the last removed element. If the iterator `last` refers to the last element, the `end()` iterator
+   is returned.
+3. Number of elements removed. If `ObjectType` is the default `std::map` type, the return value will always be `0`
+   (`key` was not found) or `1` (`key` was found).
+4. See 3.
+5. (none)
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+1. The function can throw the following exceptions:
+    - Throws [`type_error.307`](../../home/exceptions.md#jsonexceptiontype_error307) if called on a `null` value;
+      example: `"cannot use erase() with null"`
+    - Throws [`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) if called on an
+      iterator which does not belong to the current JSON value; example: `"iterator does not fit current value"`
+    - Throws [`invalid_iterator.205`](../../home/exceptions.md#jsonexceptioninvalid_iterator205) if called on a
+      primitive type with invalid iterator (i.e., any iterator which is not `begin()`); example: `"iterator out of
+      range"`
+2. The function can throw the following exceptions:
+    - Throws [`type_error.307`](../../home/exceptions.md#jsonexceptiontype_error307) if called on a `null` value;
+      example: `"cannot use erase() with null"`
+    - Throws [`invalid_iterator.203`](../../home/exceptions.md#jsonexceptioninvalid_iterator203) if called on iterators
+      which does not belong to the current JSON value; example: `"iterators do not fit current value"`
+    - Throws [`invalid_iterator.204`](../../home/exceptions.md#jsonexceptioninvalid_iterator204) if called on a
+      primitive type with invalid iterators (i.e., if `first != begin()` and `last != end()`); example: `"iterators out
+      of range"`
+3. The function can throw the following exceptions:
+    - Throws [`type_error.307`](../../home/exceptions.md#jsonexceptiontype_error307) when called on a type other than
+      JSON object; example: `"cannot use erase() with null"`
+4. See 3.
+5. The function can throw the following exceptions:
+    - Throws [`type_error.307`](../../home/exceptions.md#jsonexceptiontype_error307) when called on a type other than
+      JSON object; example: `"cannot use erase() with null"`
+    - Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) when `idx >= size()`; example:
+      `"array index 17 is out of range"`
+
+## Complexity
+
+1. The complexity depends on the type:
+       - objects: amortized constant
+       - arrays: linear in distance between `pos` and the end of the container
+       - strings and binary: linear in the length of the member
+       - other types: constant
+2. The complexity depends on the type:
+       - objects: `log(size()) + std::distance(first, last)`
+       - arrays: linear in the distance between `first` and `last`, plus linear
+         in the distance between `last` and end of the container
+       - strings and binary: linear in the length of the member
+       - other types: constant
+3. `log(size()) + count(key)`
+4. `log(size()) + count(key)`
+5. Linear in distance between `idx` and the end of the container.
+
+## Notes
+
+1. Invalidates iterators and references at or after the point of the `erase`, including the `end()` iterator.
+2. (none)
+3. References and iterators to the erased elements are invalidated. Other references and iterators are not affected.
+4. See 3.
+5. (none)
+
+## Examples
+
+??? example "Example: (1) remove element given an iterator"
+
+    The example shows the effect of `erase()` for different JSON types using an iterator.
+    
+    ```cpp
+    --8<-- "examples/erase__IteratorType.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/erase__IteratorType.output"
+    ```
+
+??? example "Example: (2) remove elements given an iterator range"
+
+    The example shows the effect of `erase()` for different JSON types using an iterator range.
+    
+    ```cpp
+    --8<-- "examples/erase__IteratorType_IteratorType.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/erase__IteratorType_IteratorType.output"
+    ```
+
+??? example "Example: (3) remove element from a JSON object given a key"
+
+    The example shows the effect of `erase()` for different JSON types using an object key.
+    
+    ```cpp
+    --8<-- "examples/erase__object_t_key_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/erase__object_t_key_type.output"
+    ```
+
+??? example "Example: (4) remove element from a JSON object given a key using string_view"
+
+    The example shows the effect of `erase()` for different JSON types using an object key.
+    
+    ```cpp
+    --8<-- "examples/erase__keytype.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/erase__keytype.c++17.output"
+    ```
+
+??? example "Example: (5) remove element from a JSON array given an index"
+
+    The example shows the effect of `erase()` using an array index.
+    
+    ```cpp
+    --8<-- "examples/erase__size_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/erase__size_type.output"
+    ```
+
+## Version history
+
+1. Added in version 1.0.0. Added support for binary types in version 3.8.0.
+2. Added in version 1.0.0. Added support for binary types in version 3.8.0.
+3. Added in version 1.0.0.
+4. Added in version 3.11.0.
+5. Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/error_handler_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/error_handler_t.md
new file mode 100644
index 00000000..dc32ced9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/error_handler_t.md
@@ -0,0 +1,42 @@
+# <small>nlohmann::basic_json::</small>error_handler_t
+
+```cpp
+enum class error_handler_t {
+    strict,
+    replace,
+    ignore
+};
+```
+
+This enumeration is used in the [`dump`](dump.md) function to choose how to treat decoding errors while serializing a
+`basic_json` value. Three values are differentiated:
+
+strict
+:   throw a `type_error` exception in case of invalid UTF-8
+
+replace
+:   replace invalid UTF-8 sequences with U+FFFD (� REPLACEMENT CHARACTER)
+
+ignore
+:   ignore invalid UTF-8 sequences; all bytes are copied to the output unchanged
+
+## Examples
+
+??? example
+
+    The example below shows how the different values of the `error_handler_t` influence the behavior of
+    [`dump`](dump.md) when reading serializing an invalid UTF-8 sequence.
+
+    ```cpp
+    --8<-- "examples/error_handler_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/error_handler_t.output"
+    ```
+
+## Version history
+
+- Added in version 3.4.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/exception.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/exception.md
new file mode 100644
index 00000000..b592d62e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/exception.md
@@ -0,0 +1,87 @@
+# <small>nlohmann::basic_json::</small>exception
+
+```cpp
+class exception : public std::exception;
+```
+
+This class is an extension of [`std::exception`](https://en.cppreference.com/w/cpp/error/exception) objects with a
+member `id` for exception ids. It is used as the base class for all exceptions thrown by the `basic_json` class. This
+class can hence be used as "wildcard" to catch exceptions, see example below.
+
+```mermaid
+classDiagram
+  direction LR
+  
+    class std_exception ["std::exception"] {
+        <<interface>>
+    }
+
+    class json_exception ["basic_json::exception"] {
+        +const int id
+        +const char* what() const
+    }
+    
+    class json_parse_error ["basic_json::parse_error"] {
+        +const std::size_t byte
+    }
+
+    class json_invalid_iterator ["basic_json::invalid_iterator"]
+    class json_type_error ["basic_json::type_error"]
+    class json_out_of_range ["basic_json::out_of_range"]
+    class json_other_error ["basic_json::other_error"]
+
+    std_exception <|-- json_exception
+    json_exception <|-- json_parse_error
+    json_exception <|-- json_invalid_iterator
+    json_exception <|-- json_type_error
+    json_exception <|-- json_out_of_range
+    json_exception <|-- json_other_error
+
+    style json_exception fill:#CCCCFF
+```
+
+Subclasses:
+
+- [`parse_error`](parse_error.md) for exceptions indicating a parse error
+- [`invalid_iterator`](invalid_iterator.md) for exceptions indicating errors with iterators
+- [`type_error`](type_error.md) for exceptions indicating executing a member function with a wrong type
+- [`out_of_range`](out_of_range.md) for exceptions indicating access out of the defined range
+- [`other_error`](other_error.md) for exceptions indicating other library errors
+
+## Member functions
+
+- **what** - returns explanatory string
+
+## Member variables
+
+- **id** - the id of the exception
+
+## Notes
+
+To have nothrow-copy-constructible exceptions, we internally use `std::runtime_error` which can cope with
+arbitrary-length error messages. Intermediate strings are built with static functions and then passed to the actual
+constructor.
+
+## Examples
+
+??? example
+
+    The following code shows how arbitrary library exceptions can be caught.
+    
+    ```cpp
+    --8<-- "examples/exception.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/exception.output"
+    ```
+
+## See also
+
+[List of exceptions](../../home/exceptions.md)
+
+## Version history
+
+- Since version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/find.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/find.md
new file mode 100644
index 00000000..c6435071
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/find.md
@@ -0,0 +1,86 @@
+# <small>nlohmann::basic_json::</small>find
+
+```cpp
+// (1)
+iterator find(const typename object_t::key_type& key);
+const_iterator find(const typename object_t::key_type& key) const;
+
+// (2)
+template<typename KeyType>
+iterator find(KeyType&& key);
+template<typename KeyType>
+const_iterator find(KeyType&& key) const;
+```
+
+1. Finds an element in a JSON object with a key equivalent to `key`. If the element is not found or the
+   JSON value is not an object, `end()` is returned.
+2. See 1. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
+   `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+
+## Template parameters
+
+`KeyType`
+:   A type for an object key other than [`json_pointer`](../json_pointer/index.md) that is comparable with
+    [`string_t`](string_t.md) using  [`object_comparator_t`](object_comparator_t.md).
+    This can also be a string view (C++17).
+
+## Parameters
+
+`key` (in)
+:   key value of the element to search for.
+    
+## Return value
+
+Iterator to an element with a key equivalent to `key`. If no such element is found or the JSON value is not an object,
+a past-the-end iterator (see `end()`) is returned.
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Complexity
+
+Logarithmic in the size of the JSON object.
+
+## Notes
+
+This method always returns `end()` when executed on a JSON type that is not an object.
+
+## Examples
+
+??? example "Example: (1) find object element by key"
+
+    The example shows how `find()` is used.
+    
+    ```cpp
+    --8<-- "examples/find__object_t_key_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/find__object_t_key_type.output"
+    ```
+
+??? example "Example: (2) find object element by key using string_view"
+
+    The example shows how `find()` is used.
+    
+    ```cpp
+    --8<-- "examples/find__keytype.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/find__keytype.c++17.output"
+    ```
+
+## See also
+
+- [contains](contains.md) checks whether a key exists
+
+## Version history
+
+1. Added in version 3.11.0.
+2. Added in version 1.0.0. Changed to support comparable types in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/flatten.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/flatten.md
new file mode 100644
index 00000000..8703e86d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/flatten.md
@@ -0,0 +1,50 @@
+# <small>nlohmann::basic_json::</small>flatten
+
+```cpp
+basic_json flatten() const;
+```
+
+The function creates a JSON object whose keys are JSON pointers (see [RFC 6901](https://tools.ietf.org/html/rfc6901))
+and whose values are all primitive (see [`is_primitive()`](is_primitive.md) for more information). The original JSON
+value can be restored using the [`unflatten()`](unflatten.md) function.
+    
+## Return value
+
+an object that maps JSON pointers to primitive values
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Complexity
+
+Linear in the size the JSON value.
+
+## Notes
+
+Empty objects and arrays are flattened to `#!json null` and will not be reconstructed correctly by the
+[`unflatten()`](unflatten.md) function.
+
+## Examples
+
+??? example
+
+    The following code shows how a JSON object is flattened to an object whose keys consist of JSON pointers.
+    
+    ```cpp
+    --8<-- "examples/flatten.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/flatten.output"
+    ```
+
+## See also
+
+- [unflatten](unflatten.md) the reverse function
+
+## Version history
+
+- Added in version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_bjdata.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_bjdata.md
new file mode 100644
index 00000000..3c5eeb35
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_bjdata.md
@@ -0,0 +1,93 @@
+# <small>nlohmann::basic_json::</small>from_bjdata
+
+```cpp
+// (1)
+template<typename InputType>
+static basic_json from_bjdata(InputType&& i,
+                              const bool strict = true,
+                              const bool allow_exceptions = true);
+// (2)
+template<typename IteratorType>
+static basic_json from_bjdata(IteratorType first, IteratorType last,
+                              const bool strict = true,
+                              const bool allow_exceptions = true);
+```
+
+Deserializes a given input to a JSON value using the BJData (Binary JData) serialization format.
+
+1. Reads from a compatible input.
+2. Reads from an iterator range.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/bjdata.md).
+
+## Template parameters
+
+`InputType`
+:   A compatible input, for instance:
+
+    - an `std::istream` object
+    - a `FILE` pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object `obj` for which `begin(obj)` and `end(obj)` produces a valid pair of iterators.
+
+`IteratorType`
+:   a compatible iterator type
+
+## Parameters
+
+`i` (in)
+:   an input in BJData format convertible to an input adapter
+
+`first` (in)
+:   iterator to start of the input
+
+`last` (in)
+:   iterator to end of the input
+
+`strict` (in)
+:   whether to expect the input to be consumed until EOF (`#!cpp true` by default)
+
+`allow_exceptions` (in)
+:   whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
+
+## Return value
+
+deserialized JSON value; in case of a parse error and `allow_exceptions` set to `#!cpp false`, the return value will be
+`value_t::discarded`. The latter can be checked with [`is_discarded`](is_discarded.md).
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+- Throws [parse_error.110](../../home/exceptions.md#jsonexceptionparse_error110) if the given input ends prematurely or
+  the end of file was not reached when `strict` was set to true
+- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if a parse error occurs
+- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a string could not be parsed
+  successfully
+
+## Complexity
+
+Linear in the size of the input.
+
+## Examples
+
+??? example
+
+    The example shows the deserialization of a byte vector in BJData format to a JSON value.
+     
+    ```cpp
+    --8<-- "examples/from_bjdata.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/from_bjdata.output"
+    ```
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_bson.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_bson.md
new file mode 100644
index 00000000..77549370
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_bson.md
@@ -0,0 +1,110 @@
+# <small>nlohmann::basic_json::</small>from_bson
+
+```cpp
+// (1)
+template<typename InputType>
+static basic_json from_bson(InputType&& i,
+                            const bool strict = true,
+                            const bool allow_exceptions = true);
+// (2)
+template<typename IteratorType>
+static basic_json from_bson(IteratorType first, IteratorType last,
+                            const bool strict = true,
+                            const bool allow_exceptions = true);
+```
+
+Deserializes a given input to a JSON value using the BSON (Binary JSON) serialization format.
+
+1. Reads from a compatible input.
+2. Reads from an iterator range.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/bson.md).
+
+## Template parameters
+
+`InputType`
+:   A compatible input, for instance:
+    
+    - an `std::istream` object
+    - a `FILE` pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object `obj` for which `begin(obj)` and `end(obj)` produces a valid pair of iterators.
+
+`IteratorType`
+:   a compatible iterator type
+
+## Parameters
+
+`i` (in)
+:   an input in BSON format convertible to an input adapter
+
+`first` (in)
+:   iterator to start of the input
+
+`last` (in)
+:   iterator to end of the input
+
+`strict` (in)
+:   whether to expect the input to be consumed until EOF (`#!cpp true` by default)
+
+`allow_exceptions` (in)
+:   whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
+
+## Return value
+
+deserialized JSON value; in case of a parse error and `allow_exceptions` set to `#!cpp false`, the return value will be
+`value_t::discarded`.  The latter can be checked with [`is_discarded`](is_discarded.md).
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+Throws [`parse_error.114`](../../home/exceptions.md#jsonexceptionparse_error114) if an unsupported BSON record type is
+encountered.
+
+## Complexity
+
+Linear in the size of the input.
+
+## Examples
+
+??? example
+
+    The example shows the deserialization of a byte vector in BSON format to a JSON value.
+     
+    ```cpp
+    --8<-- "examples/from_bson.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/from_bson.output"
+    ```
+
+## See also
+
+- [BSON specification](http://bsonspec.org/spec.html)
+- [to_bson](to_bson.md) for the analogous serialization
+- [from_cbor](from_cbor.md) for the related CBOR format
+- [from_msgpack](from_msgpack.md) for the related MessagePack format
+- [from_ubjson](from_ubjson.md) for the related UBJSON format
+
+## Version history
+
+- Added in version 3.4.0.
+
+!!! warning "Deprecation"
+
+    - Overload (2) replaces calls to `from_bson` with a pointer and a length as first two parameters, which has been
+      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      `#!cpp from_bson(ptr, len, ...);` with `#!cpp from_bson(ptr, ptr+len, ...);`.
+    - Overload (2) replaces calls to `from_bson` with a pair of iterators as their first parameter, which has been
+      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      `#!cpp from_bson({ptr, ptr+len}, ...);` with `#!cpp from_bson(ptr, ptr+len, ...);`.
+
+    You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated
+    function.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_cbor.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_cbor.md
new file mode 100644
index 00000000..3aa57b9e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_cbor.md
@@ -0,0 +1,117 @@
+# <small>nlohmann::basic_json::</small>from_cbor
+
+```cpp
+// (1)
+template<typename InputType>
+static basic_json from_cbor(InputType&& i,
+                            const bool strict = true,
+                            const bool allow_exceptions = true,
+                            const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error);
+
+// (2)
+template<typename IteratorType>
+static basic_json from_cbor(IteratorType first, IteratorType last,
+                            const bool strict = true,
+                            const bool allow_exceptions = true,
+                            const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error);
+```
+
+Deserializes a given input to a JSON value using the CBOR (Concise Binary Object Representation) serialization format.
+
+1. Reads from a compatible input.
+2. Reads from an iterator range.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/cbor.md).
+
+## Template parameters
+
+`InputType`
+:   A compatible input, for instance:
+    
+    - an `std::istream` object
+    - a `FILE` pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object `obj` for which `begin(obj)` and `end(obj)` produces a valid pair of iterators.
+
+`IteratorType`
+:   a compatible iterator type
+
+## Parameters
+
+`i` (in)
+:   an input in CBOR format convertible to an input adapter
+
+`first` (in)
+:   iterator to start of the input
+
+`last` (in)
+:   iterator to end of the input
+
+`strict` (in)
+:   whether to expect the input to be consumed until EOF (`#!cpp true` by default)
+
+`allow_exceptions` (in)
+:   whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
+
+`tag_handler` (in)
+:   how to treat CBOR tags (optional, `error` by default); see [`cbor_tag_handler_t`](cbor_tag_handler_t.md) for more
+    information
+
+## Return value
+
+deserialized JSON value; in case of a parse error and `allow_exceptions` set to `#!cpp false`, the return value will be
+`value_t::discarded`.  The latter can be checked with [`is_discarded`](is_discarded.md).
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+ 
+- Throws [parse_error.110](../../home/exceptions.md#jsonexceptionparse_error110) if the given input ends prematurely or
+  the end of file was not reached when `strict` was set to true
+- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if unsupported features from CBOR were
+  used in the given input or if the input is not valid CBOR
+- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a string was expected as map key,
+  but not found
+
+## Complexity
+
+Linear in the size of the input.
+
+## Examples
+
+??? example
+
+    The example shows the deserialization of a byte vector in CBOR format to a JSON value.
+     
+    ```cpp
+    --8<-- "examples/from_cbor.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/from_cbor.output"
+    ```
+
+## Version history
+
+- Added in version 2.0.9.
+- Parameter `start_index` since version 2.1.1.
+- Changed to consume input adapters, removed `start_index` parameter, and added `strict` parameter in version 3.0.0.
+- Added `allow_exceptions` parameter in version 3.2.0.
+- Added `tag_handler` parameter in version 3.9.0.
+
+!!! warning "Deprecation"
+
+    - Overload (2) replaces calls to `from_cbor` with a pointer and a length as first two parameters, which has been
+      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      `#!cpp from_cbor(ptr, len, ...);` with `#!cpp from_cbor(ptr, ptr+len, ...);`.
+    - Overload (2) replaces calls to `from_cbor` with a pair of iterators as their first parameter, which has been
+      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      `#!cpp from_cbor({ptr, ptr+len}, ...);` with `#!cpp from_cbor(ptr, ptr+len, ...);`.
+
+    You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated
+    function.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_msgpack.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_msgpack.md
new file mode 100644
index 00000000..117c3865
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_msgpack.md
@@ -0,0 +1,109 @@
+# <small>nlohmann::basic_json::</small>from_msgpack
+
+```cpp
+// (1)
+template<typename InputType>
+static basic_json from_msgpack(InputType&& i,
+                               const bool strict = true,
+                               const bool allow_exceptions = true);
+// (2)
+template<typename IteratorType>
+static basic_json from_msgpack(IteratorType first, IteratorType last,
+                               const bool strict = true,
+                               const bool allow_exceptions = true);
+```
+
+Deserializes a given input to a JSON value using the MessagePack serialization format.
+
+1. Reads from a compatible input.
+2. Reads from an iterator range.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/messagepack.md).
+
+## Template parameters
+
+`InputType`
+:   A compatible input, for instance:
+    
+    - an `std::istream` object
+    - a `FILE` pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object `obj` for which `begin(obj)` and `end(obj)` produces a valid pair of iterators.
+
+`IteratorType`
+:   a compatible iterator type
+
+## Parameters
+
+`i` (in)
+:   an input in MessagePack format convertible to an input adapter
+
+`first` (in)
+:   iterator to start of the input
+
+`last` (in)
+:   iterator to end of the input
+
+`strict` (in)
+:   whether to expect the input to be consumed until EOF (`#!cpp true` by default)
+
+`allow_exceptions` (in)
+:   whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
+
+## Return value
+
+deserialized JSON value; in case of a parse error and `allow_exceptions` set to `#!cpp false`, the return value will be
+`value_t::discarded`.  The latter can be checked with [`is_discarded`](is_discarded.md).
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+- Throws [parse_error.110](../../home/exceptions.md#jsonexceptionparse_error110) if the given input ends prematurely or
+  the end of  file was not reached when `strict` was set to true
+- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if unsupported features from
+  MessagePack were used in the given input or if the input is not valid MessagePack
+- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a string was expected as map key,
+  but not found
+
+## Complexity
+
+Linear in the size of the input.
+
+## Examples
+
+??? example
+
+    The example shows the deserialization of a byte vector in MessagePack format to a JSON value.
+     
+    ```cpp
+    --8<-- "examples/from_msgpack.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/from_msgpack.output"
+    ```
+
+## Version history
+
+- Added in version 2.0.9.
+- Parameter `start_index` since version 2.1.1.
+- Changed to consume input adapters, removed `start_index` parameter, and added `strict` parameter in version 3.0.0.
+- Added `allow_exceptions` parameter in version 3.2.0.
+
+!!! warning "Deprecation"
+
+    - Overload (2) replaces calls to `from_msgpack` with a pointer and a length as first two parameters, which has been
+      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      `#!cpp from_msgpack(ptr, len, ...);` with `#!cpp from_msgpack(ptr, ptr+len, ...);`.
+    - Overload (2) replaces calls to `from_cbor` with a pair of iterators as their first parameter, which has been
+      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      `#!cpp from_msgpack({ptr, ptr+len}, ...);` with `#!cpp from_msgpack(ptr, ptr+len, ...);`.
+
+    You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated
+    function.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_ubjson.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_ubjson.md
new file mode 100644
index 00000000..08117e89
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/from_ubjson.md
@@ -0,0 +1,106 @@
+# <small>nlohmann::basic_json::</small>from_ubjson
+
+```cpp
+// (1)
+template<typename InputType>
+static basic_json from_ubjson(InputType&& i,
+                              const bool strict = true,
+                              const bool allow_exceptions = true);
+// (2)
+template<typename IteratorType>
+static basic_json from_ubjson(IteratorType first, IteratorType last,
+                              const bool strict = true,
+                              const bool allow_exceptions = true);
+```
+
+Deserializes a given input to a JSON value using the UBJSON (Universal Binary JSON) serialization format.
+
+1. Reads from a compatible input.
+2. Reads from an iterator range.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/ubjson.md).
+
+## Template parameters
+
+`InputType`
+:   A compatible input, for instance:
+    
+    - an `std::istream` object
+    - a `FILE` pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object `obj` for which `begin(obj)` and `end(obj)` produces a valid pair of iterators.
+
+`IteratorType`
+:   a compatible iterator type
+
+## Parameters
+
+`i` (in)
+:   an input in UBJSON format convertible to an input adapter
+
+`first` (in)
+:   iterator to start of the input
+
+`last` (in)
+:   iterator to end of the input
+
+`strict` (in)
+:   whether to expect the input to be consumed until EOF (`#!cpp true` by default)
+
+`allow_exceptions` (in)
+:   whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
+
+## Return value
+
+deserialized JSON value; in case of a parse error and `allow_exceptions` set to `#!cpp false`, the return value will be
+`value_t::discarded`. The latter can be checked with [`is_discarded`](is_discarded.md).
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+- Throws [parse_error.110](../../home/exceptions.md#jsonexceptionparse_error110) if the given input ends prematurely or
+  the end of file was not reached when `strict` was set to true
+- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if a parse error occurs
+- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a string could not be parsed 
+  successfully
+
+## Complexity
+
+Linear in the size of the input.
+
+## Examples
+
+??? example
+
+    The example shows the deserialization of a byte vector in UBJSON format to a JSON value.
+     
+    ```cpp
+    --8<-- "examples/from_ubjson.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/from_ubjson.output"
+    ```
+
+## Version history
+
+- Added in version 3.1.0.
+- Added `allow_exceptions` parameter in version 3.2.0.
+
+!!! warning "Deprecation"
+
+    - Overload (2) replaces calls to `from_ubjson` with a pointer and a length as first two parameters, which has been
+      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      `#!cpp from_ubjson(ptr, len, ...);` with `#!cpp from_ubjson(ptr, ptr+len, ...);`.
+    - Overload (2) replaces calls to `from_ubjson` with a pair of iterators as their first parameter, which has been
+      deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+      `#!cpp from_ubjson({ptr, ptr+len}, ...);` with `#!cpp from_ubjson(ptr, ptr+len, ...);`.
+
+    You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated
+    function.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/front.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/front.md
new file mode 100644
index 00000000..e258c36a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/front.md
@@ -0,0 +1,58 @@
+# <small>nlohmann::basic_json::</small>front
+
+```cpp
+reference front();
+const_reference front() const;
+```
+
+Returns a reference to the first element in the container. For a JSON container `#!cpp c`, the expression
+`#!cpp c.front()` is equivalent to `#!cpp *c.begin()`.
+    
+## Return value
+
+In case of a structured type (array or object), a reference to the first element is returned. In case of number, string,
+boolean, or binary values, a reference to the value is returned.
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+If the JSON value is `#!json null`, exception
+[`invalid_iterator.214`](../../home/exceptions.md#jsonexceptioninvalid_iterator214) is thrown.
+
+## Complexity
+
+Constant.
+
+## Notes
+
+!!! info "Precondition"
+
+    The array or object must not be empty. Calling `front` on an empty array or object yields undefined behavior.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `front()`.
+     
+    ```cpp
+    --8<-- "examples/front.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/front.output"
+    ```
+
+## See also
+
+- [back](back.md) to access the last element
+
+## Version history
+
+- Added in version 1.0.0.
+- Adjusted code to return reference to binary values in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get.md
new file mode 100644
index 00000000..96fc221d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get.md
@@ -0,0 +1,136 @@
+# <small>nlohmann::basic_json::</small>get
+
+```cpp
+// (1)
+template<typename ValueType>
+ValueType get() const noexcept(
+    noexcept(JSONSerializer<ValueType>::from_json(
+        std::declval<const basic_json_t&>(), std::declval<ValueType&>())));
+
+// (2)
+template<typename BasicJsonType>
+BasicJsonType get() const;
+
+// (3)
+template<typename PointerType>
+PointerType get_ptr();
+
+template<typename PointerType>
+constexpr const PointerType get_ptr() const noexcept;
+```
+
+1. Explicit type conversion between the JSON value and a compatible value which is
+   [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible) and
+   [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible). The value is converted by
+   calling the `json_serializer<ValueType>` `from_json()` method.
+   
+    The function is equivalent to executing
+    ```cpp
+    ValueType ret;
+    JSONSerializer<ValueType>::from_json(*this, ret);
+    return ret;
+    ```
+
+    This overload is chosen if:
+    
+    - `ValueType` is not `basic_json`,
+    - `json_serializer<ValueType>` has a `from_json()` method of the form
+      `void from_json(const basic_json&, ValueType&)`, and
+    - `json_serializer<ValueType>` does not have a `from_json()` method of the form
+      `ValueType from_json(const basic_json&)`
+
+    If the type is **not** [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible) and
+    **not** [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible), the value is
+    converted by calling the `json_serializer<ValueType>` `from_json()` method.
+   
+    The function is then equivalent to executing
+    ```cpp
+    return JSONSerializer<ValueTypeCV>::from_json(*this);
+    ``` 
+   
+    This overload is chosen if:
+    
+    - `ValueType` is not `basic_json` and
+    - `json_serializer<ValueType>` has a `from_json()` method of the form
+     `ValueType from_json(const basic_json&)`
+
+    If `json_serializer<ValueType>` has both overloads of `from_json()`, the latter one is chosen.
+
+2. Overload for `basic_json` specializations. The function is equivalent to executing
+    ```cpp
+    return *this;
+    ```
+
+3. Explicit pointer access to the internally stored JSON value. No copies are made.
+
+## Template parameters
+
+`ValueType`
+:   the value type to return
+
+`BasicJsonType`
+:   a specialization of `basic_json`
+
+`PointerType`
+:   pointer type; must be a pointer to [`array_t`](array_t.md), [`object_t`](object_t.md), [`string_t`](string_t.md),
+    [`boolean_t`](boolean_t.md), [`number_integer_t`](number_integer_t.md), or
+    [`number_unsigned_t`](number_unsigned_t.md), [`number_float_t`](number_float_t.md), or [`binary_t`](binary_t.md).
+    Other types will not compile.
+
+## Return value
+
+1. copy of the JSON value, converted to `ValueType`
+2. a copy of `#!cpp *this`, converted into `BasicJsonType`
+3. pointer to the internally stored JSON value if the requested pointer type fits to the JSON value; `#!cpp nullptr`
+   otherwise
+
+## Exceptions
+
+Depends on what `json_serializer<ValueType>` `from_json()` method throws
+
+## Notes
+
+!!! danger "Undefined behavior"
+
+    Writing data to the pointee (overload 3) of the result yields an undefined state.
+
+## Examples
+
+??? example
+
+    The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers, (2) A JSON array can be converted to a standard
+    `std::vector<short>`, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string, json>`.
+        
+    ```cpp
+    --8<-- "examples/get__ValueType_const.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/get__ValueType_const.output"
+    ```
+
+??? example
+
+    The example below shows how pointers to internal values of a JSON value can be requested. Note that no type
+    conversions are made and a `#cpp nullptr` is returned if the value and the requested pointer type does not match.
+        
+    ```cpp
+    --8<-- "examples/get__PointerType.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/get__PointerType.output"
+    ```
+
+## Version history
+
+1. Since version 2.1.0.
+2. Since version 2.1.0. Extended to work with other specializations of `basic_json` in version 3.2.0.
+3. Since version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_allocator.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_allocator.md
new file mode 100644
index 00000000..07a4d845
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_allocator.md
@@ -0,0 +1,31 @@
+# <small>nlohmann::basic_json::</small>get_allocator
+
+```cpp
+static allocator_type get_allocator();
+```
+
+Returns the allocator associated with the container.
+    
+## Return value
+
+associated allocator
+
+## Examples
+
+??? example
+
+    The example shows how `get_allocator()` is used to created `json` values.
+    
+    ```cpp
+    --8<-- "examples/get_allocator.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/get_allocator.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_binary.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_binary.md
new file mode 100644
index 00000000..a910f3aa
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_binary.md
@@ -0,0 +1,45 @@
+# <small>nlohmann::basic_json::</small>get_binary
+
+```cpp
+binary_t& get_binary();
+
+const binary_t& get_binary() const;
+```
+
+Returns a reference to the stored binary value.
+
+## Return value
+
+Reference to binary value.
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if the value is not binary
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows how to query a binary value.
+     
+    ```cpp
+    --8<-- "examples/get_binary.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/get_binary.output"
+    ```
+
+## Version history
+
+- Added in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_ptr.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_ptr.md
new file mode 100644
index 00000000..7c000f1a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_ptr.md
@@ -0,0 +1,94 @@
+# <small>nlohmann::basic_json::</small>get_ptr
+
+```cpp
+template<typename PointerType>
+PointerType get_ptr() noexcept;
+
+template<typename PointerType>
+constexpr const PointerType get_ptr() const noexcept;
+```
+
+Implicit pointer access to the internally stored JSON value. No copies are made.
+
+## Template parameters
+
+`PointerType`
+:   pointer type; must be a pointer to [`array_t`](array_t.md), [`object_t`](object_t.md), [`string_t`](string_t.md),
+    [`boolean_t`](boolean_t.md), [`number_integer_t`](number_integer_t.md), or
+    [`number_unsigned_t`](number_unsigned_t.md), [`number_float_t`](number_float_t.md), or [`binary_t`](binary_t.md).
+    Other types will not compile.
+
+## Return value
+
+pointer to the internally stored JSON value if the requested pointer type fits to the JSON value; `#!cpp nullptr`
+otherwise
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Notes
+
+!!! danger "Undefined behavior"
+
+    The pointer becomes invalid if the underlying JSON object changes.
+
+    Consider the following example code where the pointer `ptr` changes after the array is resized. As a result,
+    reading or writing to `ptr` after the array change would be undefined behavior. The address of the first array
+    element changes, because the underlying `std::vector` is resized after adding a fifth element.
+
+    ```cpp
+    #include <iostream>
+    #include <nlohmann/json.hpp>
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+        json j = {1, 2, 3, 4};
+        auto* ptr = j[0].get_ptr<std::int64_t*>();
+        std::cout << "value at " << ptr << " is " << *ptr << std::endl;
+    
+        j.push_back(5);
+    
+        ptr = j[0].get_ptr<std::int64_t*>();
+        std::cout << "value at " << ptr << " is " << *ptr << std::endl;
+    }
+    ```
+
+    Output:
+
+    ```
+    value at 0x6000012fc1c8 is 1
+    value at 0x6000029fc088 is 1
+    ```
+
+## Examples
+
+??? example
+
+    The example below shows how pointers to internal values of a JSON value can be requested. Note that no type
+    conversions are made and a `#!cpp nullptr` is returned if the value and the requested pointer type does not match.
+    
+    ```cpp
+    --8<-- "examples/get_ptr.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/get_ptr.output"
+    ```
+
+## See also
+
+- [get_ref()](get_ref.md) get a reference value
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended to binary types in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_ref.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_ref.md
new file mode 100644
index 00000000..73b20b0e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_ref.md
@@ -0,0 +1,68 @@
+# <small>nlohmann::basic_json::</small>get_ref
+
+```cpp
+template<typename ReferenceType>
+ReferenceType get_ref();
+
+template<typename ReferenceType>
+const ReferenceType get_ref() const;
+```
+
+Implicit reference access to the internally stored JSON value. No copies are made.
+
+## Template parameters
+
+`ReferenceType`
+:   reference type; must be a reference to [`array_t`](array_t.md), [`object_t`](object_t.md),
+    [`string_t`](string_t.md), [`boolean_t`](boolean_t.md), [`number_integer_t`](number_integer_t.md), or
+    [`number_unsigned_t`](number_unsigned_t.md), [`number_float_t`](number_float_t.md), or [`binary_t`](binary_t.md).
+    Enforced by a static assertion.
+
+## Return value
+
+reference to the internally stored JSON value if the requested reference type fits to the JSON value; throws
+[`type_error.303`](../../home/exceptions.md#jsonexceptiontype_error303) otherwise
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+Throws [`type_error.303`](../../home/exceptions.md#jsonexceptiontype_error303) if the requested reference type does not
+match the stored JSON value type; example: `"incompatible ReferenceType for get_ref, actual type is binary"`.
+
+## Complexity
+
+Constant.
+
+## Notes
+
+!!! danger "Undefined behavior"
+
+    The reference becomes invalid if the underlying JSON object changes.
+
+## Examples
+
+??? example
+
+    The example shows several calls to `get_ref()`.
+    
+    ```cpp
+    --8<-- "examples/get_ref.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/get_ref.output"
+    ```
+
+## See also
+
+- [get_ptr()](get_ptr.md) get a pointer value
+
+## Version history
+
+- Added in version 1.1.0.
+- Extended to binary types in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_to.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_to.md
new file mode 100644
index 00000000..6af6d212
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/get_to.md
@@ -0,0 +1,58 @@
+# <small>nlohmann::basic_json::</small>get_to
+
+```cpp
+template<typename ValueType>
+ValueType& get_to(ValueType& v) const noexcept(
+    noexcept(JSONSerializer<ValueType>::from_json(
+        std::declval<const basic_json_t&>(), v)));
+```
+
+Explicit type conversion between the JSON value and a compatible value. The value is filled into the input parameter by
+calling the `json_serializer<ValueType>` `from_json()` method.
+
+The function is equivalent to executing
+```cpp
+ValueType v;
+JSONSerializer<ValueType>::from_json(*this, v);
+```
+
+This overload is chosen if:
+
+- `ValueType` is not `basic_json`,
+- `json_serializer<ValueType>` has a `from_json()` method of the form `void from_json(const basic_json&, ValueType&)`
+
+## Template parameters
+
+`ValueType`
+:   the value type to return
+
+## Return value
+
+the input parameter, allowing chaining calls
+
+## Exceptions
+
+Depends on what `json_serializer<ValueType>` `from_json()` method throws
+
+## Examples
+
+??? example
+
+    The example below shows several conversions from JSON values to other types. There a few things to note: (1)
+    Floating-point numbers can be converted to integers, (2) A JSON array can be converted to a standard
+    `#!cpp std::vector<short>`, (3) A JSON object can be converted to C++ associative containers such as
+    `#cpp std::unordered_map<std::string, json>`.
+        
+    ```cpp
+    --8<-- "examples/get_to.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/get_to.output"
+    ```
+
+## Version history
+
+- Since version 3.3.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/index.md
new file mode 100644
index 00000000..e90091b5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/index.md
@@ -0,0 +1,331 @@
+# <small>nlohmann::</small>basic_json
+
+<small>Defined in header `<nlohmann/json.hpp>`</small>
+
+```cpp
+template<
+    template<typename U, typename V, typename... Args> class ObjectType = std::map,
+    template<typename U, typename... Args> class ArrayType = std::vector,
+    class StringType = std::string,
+    class BooleanType = bool,
+    class NumberIntegerType = std::int64_t,
+    class NumberUnsignedType = std::uint64_t,
+    class NumberFloatType = double,
+    template<typename U> class AllocatorType = std::allocator,
+    template<typename T, typename SFINAE = void> class JSONSerializer = adl_serializer,
+    class BinaryType = std::vector<std::uint8_t>,
+    class CustomBaseClass = void
+>
+class basic_json;
+```
+
+## Template parameters
+
+| Template parameter   | Description                                                               | Derived type                                |
+|----------------------|---------------------------------------------------------------------------|---------------------------------------------|
+| `ObjectType`         | type for JSON objects                                                     | [`object_t`](object_t.md)                   |
+| `ArrayType`          | type for JSON arrays                                                      | [`array_t`](array_t.md)                     |
+| `StringType`         | type for JSON strings and object keys                                     | [`string_t`](string_t.md)                   |
+| `BooleanType`        | type for JSON booleans                                                    | [`boolean_t`](boolean_t.md)                 |
+| `NumberIntegerType`  | type for JSON integer numbers                                             | [`number_integer_t`](number_integer_t.md)   |
+| `NumberUnsignedType` | type for JSON unsigned integer numbers                                    | [`number_unsigned_t`](number_unsigned_t.md) |
+| `NumberFloatType`    | type for JSON floating-point numbers                                      | [`number_float_t`](number_float_t.md)       |
+| `AllocatorType`      | type of the allocator to use                                              |                                             |
+| `JSONSerializer`     | the serializer to resolve internal calls to `to_json()` and `from_json()` | [`json_serializer`](json_serializer.md)     |
+| `BinaryType`         | type for binary arrays                                                    | [`binary_t`](binary_t.md)                   |
+| `CustomBaseClass`    | extension point for user code                                             | [`json_base_class_t`](json_base_class_t.md) |
+
+## Specializations
+
+- [**json**](../json.md) - default specialization
+- [**ordered_json**](../ordered_json.md) - specialization that maintains the insertion order of object keys
+
+## Iterator invalidation
+
+All operations that add values to an **array** ([`push_back`](push_back.md) , [`operator+=`](operator+=.md),
+[`emplace_back`](emplace_back.md), [`insert`](insert.md), and [`operator[]`](operator%5B%5D.md) for a non-existing
+index) can yield a reallocation, in which case all iterators (including the [`end()`](end.md) iterator) and all
+references to the elements are invalidated.
+
+For [`ordered_json`](../ordered_json.md), also all operations that add a value to an **object**
+([`push_back`](push_back.md), [`operator+=`](operator+=.md), [`emplace`](emplace.md), [`insert`](insert.md),
+[`update`](update.md), and [`operator[]`](operator%5B%5D.md) for a non-existing key) can yield a reallocation, in
+which case all iterators (including the [`end()`](end.md) iterator) and all references to the elements are invalidated.
+
+## Requirements
+
+The class satisfies the following concept requirements:
+
+### Basic
+
+- [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible): JSON values can be default
+  constructed. The result will be a JSON null value.
+- [MoveConstructible](https://en.cppreference.com/w/cpp/named_req/MoveConstructible): A JSON value can be constructed
+  from an rvalue argument.
+- [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible): A JSON value can be
+  copy-constructed from an lvalue expression.
+- [MoveAssignable](https://en.cppreference.com/w/cpp/named_req/MoveAssignable): A JSON value can be assigned from an
+  rvalue argument.
+- [CopyAssignable](https://en.cppreference.com/w/cpp/named_req/CopyAssignable): A JSON value can be copy-assigned from
+  an lvalue expression.
+- [Destructible](https://en.cppreference.com/w/cpp/named_req/Destructible): JSON values can be destructed.
+
+### Layout
+
+- [StandardLayoutType](https://en.cppreference.com/w/cpp/named_req/StandardLayoutType): JSON values have
+  [standard layout](https://en.cppreference.com/w/cpp/language/data_members#Standard_layout): All non-static data
+  members are private and standard layout types, the class has no virtual functions or (virtual) base classes.
+
+### Library-wide
+
+- [EqualityComparable](https://en.cppreference.com/w/cpp/named_req/EqualityComparable): JSON values can be compared with
+  `==`, see [`operator==`](operator_eq.md).
+- [LessThanComparable](https://en.cppreference.com/w/cpp/named_req/LessThanComparable): JSON values can be compared with
+  `<`, see [`operator<`](operator_le.md).
+- [Swappable](https://en.cppreference.com/w/cpp/named_req/Swappable): Any JSON lvalue or rvalue of can be swapped with
+  any lvalue or rvalue of other compatible types, using unqualified function `swap`.
+- [NullablePointer](https://en.cppreference.com/w/cpp/named_req/NullablePointer): JSON values can be compared against
+  `std::nullptr_t` objects which are used to model the `null` value.
+
+### Container
+
+- [Container](https://en.cppreference.com/w/cpp/named_req/Container): JSON values can be used like STL containers and
+  provide iterator access.
+- [ReversibleContainer](https://en.cppreference.com/w/cpp/named_req/ReversibleContainer): JSON values can be used like
+  STL containers and provide reverse iterator access.
+
+## Member types
+
+- [**adl_serializer**](../adl_serializer/index.md) - the default serializer
+- [**value_t**](value_t.md) - the JSON type enumeration
+- [**json_pointer**](../json_pointer/index.md) - JSON Pointer implementation
+- [**json_serializer**](json_serializer.md) - type of the serializer to for conversions from/to JSON
+- [**error_handler_t**](error_handler_t.md) - type to choose behavior on decoding errors
+- [**cbor_tag_handler_t**](cbor_tag_handler_t.md) - type to choose how to handle CBOR tags
+- **initializer_list_t** - type for initializer lists of `basic_json` values
+- [**input_format_t**](input_format_t.md) - type to choose the format to parse
+- [**json_sax_t**](../json_sax/index.md) - type for SAX events
+
+### Exceptions
+
+- [**exception**](exception.md) - general exception of the `basic_json` class
+    - [**parse_error**](parse_error.md) - exception indicating a parse error
+    - [**invalid_iterator**](invalid_iterator.md) - exception indicating errors with iterators
+    - [**type_error**](type_error.md) - exception indicating executing a member function with a wrong type
+    - [**out_of_range**](out_of_range.md) - exception indicating access out of the defined range
+    - [**other_error**](other_error.md) - exception indicating other library errors
+
+### Container types
+
+| Type                     | Definition                                                                                                |
+|--------------------------|-----------------------------------------------------------------------------------------------------------|
+| `value_type`             | `#!cpp basic_json`                                                                                        |
+| `reference`              | `#!cpp value_type&`                                                                                       |
+| `const_reference`        | `#!cpp const value_type&`                                                                                 |
+| `difference_type`        | `#!cpp std::ptrdiff_t`                                                                                    |
+| `size_type`              | `#!cpp std::size_t`                                                                                       |
+| `allocator_type`         | `#!cpp AllocatorType<basic_json>`                                                                         |
+| `pointer`                | `#!cpp std::allocator_traits<allocator_type>::pointer`                                                    |
+| `const_pointer`          | `#!cpp std::allocator_traits<allocator_type>::const_pointer`                                              |
+| `iterator`               | [LegacyBidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator)          |
+| `const_iterator`         | constant [LegacyBidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator) |
+| `reverse_iterator`       | reverse iterator, derived from `iterator`                                                                 |
+| `const_reverse_iterator` | reverse iterator, derived from `const_iterator`                                                           |
+| `iteration_proxy`        | helper type for [`items`](items.md) function                                                              |
+
+### JSON value data types
+
+- [**array_t**](array_t.md) - type for arrays
+- [**binary_t**](binary_t.md) - type for binary arrays
+- [**boolean_t**](boolean_t.md) - type for booleans
+- [**default_object_comparator_t**](default_object_comparator_t.md) - default comparator for objects
+- [**number_float_t**](number_float_t.md) - type for numbers (floating-point)
+- [**number_integer_t**](number_integer_t.md) - type for numbers (integer)
+- [**number_unsigned_t**](number_unsigned_t.md) - type for numbers (unsigned)
+- [**object_comparator_t**](object_comparator_t.md) - comparator for objects
+- [**object_t**](object_t.md) - type for objects
+- [**string_t**](string_t.md) - type for strings
+
+### Parser callback
+
+- [**parse_event_t**](parse_event_t.md) - parser event types
+- [**parser_callback_t**](parser_callback_t.md) - per-element parser callback type
+
+## Member functions
+
+- [(constructor)](basic_json.md)
+- [(destructor)](~basic_json.md)
+- [**operator=**](operator=.md) - copy assignment
+- [**array**](array_t.md) (_static_) - explicitly create an array
+- [**binary**](binary.md) (_static_) - explicitly create a binary array
+- [**object**](object_t.md) (_static_) - explicitly create an object
+
+### Object inspection
+
+Functions to inspect the type of a JSON value.
+
+- [**type**](type.md) - return the type of the JSON value
+- [**operator value_t**](operator_value_t.md) - return the type of the JSON value
+- [**type_name**](type_name.md) - return the type as string
+- [**is_primitive**](is_primitive.md) - return whether type is primitive
+- [**is_structured**](is_structured.md) - return whether type is structured
+- [**is_null**](is_null.md) - return whether value is null
+- [**is_boolean**](is_boolean.md) - return whether value is a boolean
+- [**is_number**](is_number.md) - return whether value is a number
+- [**is_number_integer**](is_number_integer.md) - return whether value is an integer number
+- [**is_number_unsigned**](is_number_unsigned.md) - return whether value is an unsigned integer number
+- [**is_number_float**](is_number_float.md) - return whether value is a floating-point number
+- [**is_object**](is_object.md) - return whether value is an object
+- [**is_array**](is_array.md) - return whether value is an array
+- [**is_string**](is_string.md) - return whether value is a string
+- [**is_binary**](is_binary.md) - return whether value is a binary array
+- [**is_discarded**](is_discarded.md) - return whether value is discarded
+
+### Value access
+
+Direct access to the stored value of a JSON value.
+
+- [**get**](get.md) - get a value
+- [**get_to**](get_to.md) - get a value and write it to a destination
+- [**get_ptr**](get_ptr.md) - get a pointer value
+- [**get_ref**](get_ref.md) - get a reference value
+- [**operator ValueType**](operator_ValueType.md) - get a value
+- [**get_binary**](get_binary.md) - get a binary value
+
+### Element access
+
+Access to the JSON value
+
+- [**at**](at.md) - access specified element with bounds checking
+- [**operator[]**](operator[].md) - access specified element
+- [**value**](value.md) - access specified object element with default value
+- [**front**](front.md) - access the first element
+- [**back**](back.md) - access the last element
+
+### Lookup
+
+- [**find**](find.md) - find an element in a JSON object
+- [**count**](count.md) - returns the number of occurrences of a key in a JSON object
+- [**contains**](contains.md) - check the existence of an element in a JSON object
+
+### Iterators
+
+- [**begin**](begin.md) - returns an iterator to the first element
+- [**cbegin**](cbegin.md) - returns a const iterator to the first element
+- [**end**](end.md) - returns an iterator to one past the last element
+- [**cend**](cend.md) - returns a const iterator to one past the last element
+- [**rbegin**](rbegin.md) - returns an iterator to the reverse-beginning
+- [**rend**](rend.md) - returns an iterator to the reverse-end
+- [**crbegin**](crbegin.md) - returns a const iterator to the reverse-beginning
+- [**crend**](crend.md) - returns a const iterator to the reverse-end
+- [**items**](items.md) - wrapper to access iterator member functions in range-based for
+
+### Capacity
+
+- [**empty**](empty.md) - checks whether the container is empty
+- [**size**](size.md) - returns the number of elements
+- [**max_size**](max_size.md) - returns the maximum possible number of elements
+
+### Modifiers
+
+- [**clear**](clear.md) - clears the contents
+- [**push_back**](push_back.md) - add a value to an array/object
+- [**operator+=**](operator+=.md) - add a value to an array/object
+- [**emplace_back**](emplace_back.md) - add a value to an array
+- [**emplace**](emplace.md) - add a value to an object if key does not exist
+- [**erase**](erase.md) - remove elements
+- [**insert**](insert.md) - inserts elements
+- [**update**](update.md) - updates a JSON object from another object, overwriting existing keys 
+- [**swap**](swap.md) - exchanges the values
+
+### Lexicographical comparison operators
+
+- [**operator==**](operator_eq.md) - comparison: equal
+- [**operator!=**](operator_ne.md) - comparison: not equal
+- [**operator<**](operator_lt.md) - comparison: less than
+- [**operator>**](operator_gt.md) - comparison: greater than
+- [**operator<=**](operator_le.md) - comparison: less than or equal
+- [**operator>=**](operator_ge.md) - comparison: greater than or equal
+- [**operator<=>**](operator_spaceship.md) - comparison: 3-way
+
+### Serialization / Dumping
+
+- [**dump**](dump.md) - serialization
+
+### Deserialization / Parsing
+
+- [**parse**](parse.md) (_static_) - deserialize from a compatible input
+- [**accept**](accept.md) (_static_) - check if the input is valid JSON
+- [**sax_parse**](sax_parse.md) (_static_) - generate SAX events
+
+### JSON Pointer functions
+
+- [**flatten**](flatten.md) - return flattened JSON value
+- [**unflatten**](unflatten.md) - unflatten a previously flattened JSON value
+
+### JSON Patch functions
+
+- [**patch**](patch.md) - applies a JSON patch
+- [**patch_inplace**](patch_inplace.md) - applies a JSON patch in place
+- [**diff**](diff.md) (_static_) - creates a diff as a JSON patch
+
+### JSON Merge Patch functions
+
+- [**merge_patch**](merge_patch.md) - applies a JSON Merge Patch
+
+## Static functions
+
+- [**meta**](meta.md) - returns version information on the library
+- [**get_allocator**](get_allocator.md) - returns the allocator associated with the container
+
+### Binary formats
+
+- [**from_bjdata**](from_bjdata.md) (_static_) - create a JSON value from an input in BJData format
+- [**from_bson**](from_bson.md) (_static_) - create a JSON value from an input in BSON format
+- [**from_cbor**](from_cbor.md) (_static_) - create a JSON value from an input in CBOR format
+- [**from_msgpack**](from_msgpack.md) (_static_) - create a JSON value from an input in MessagePack format
+- [**from_ubjson**](from_ubjson.md) (_static_) - create a JSON value from an input in UBJSON format
+- [**to_bjdata**](to_bjdata.md) (_static_) - create a BJData serialization of a given JSON value
+- [**to_bson**](to_bson.md) (_static_) - create a BSON serialization of a given JSON value
+- [**to_cbor**](to_cbor.md) (_static_) - create a CBOR serialization of a given JSON value
+- [**to_msgpack**](to_msgpack.md) (_static_) - create a MessagePack serialization of a given JSON value
+- [**to_ubjson**](to_ubjson.md) (_static_) - create a UBJSON serialization of a given JSON value
+
+## Non-member functions
+
+- [**operator<<(std::ostream&)**](../operator_ltlt.md) - serialize to stream
+- [**operator>>(std::istream&)**](../operator_gtgt.md) - deserialize from stream
+- [**to_string**](to_string.md) - user-defined `to_string` function for JSON values
+
+## Literals
+
+- [**operator""_json**](../operator_literal_json.md) - user-defined string literal for JSON values
+
+## Helper classes
+
+- [**std::hash&lt;basic_json&gt;**](std_hash.md) - return a hash value for a JSON object
+- [**std::swap&lt;basic_json&gt;**](std_swap.md) - exchanges the values of two JSON objects
+
+## Examples
+
+??? example
+
+    The example shows how the library is used.
+    
+    ```cpp
+    --8<-- "examples/README.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/README.output"
+    ```
+
+## See also
+
+- [RFC 8259: The JavaScript Object Notation (JSON) Data Interchange Format](https://tools.ietf.org/html/rfc8259)
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/input_format_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/input_format_t.md
new file mode 100644
index 00000000..a3baabab
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/input_format_t.md
@@ -0,0 +1,52 @@
+# <small>nlohmann::basic_json::</small>input_format_t
+
+```cpp
+enum class input_format_t {
+    json,
+    cbor,
+    msgpack,
+    ubjson,
+    bson,
+    bjdata
+};
+```
+
+This enumeration is used in the [`sax_parse`](sax_parse.md) function to choose the input format to parse:
+
+json
+:   JSON (JavaScript Object Notation)
+
+cbor
+:   CBOR (Concise Binary Object Representation)
+
+msgpack
+:   MessagePack
+
+ubjson
+:   UBJSON (Universal Binary JSON)
+
+bson
+:   BSON (Binary JSON)
+
+bjdata
+:   BJData (Binary JData)
+
+## Examples
+
+??? example
+
+    The example below shows how an `input_format_t` enum value is passed to `sax_parse` to set the input format to CBOR.
+
+    ```cpp
+    --8<-- "examples/sax_parse__binary.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse__binary.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/insert.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/insert.md
new file mode 100644
index 00000000..b9260488
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/insert.md
@@ -0,0 +1,190 @@
+# <small>nlohmann::basic_json::</small>insert
+
+```cpp
+// (1)
+iterator insert(const_iterator pos, const basic_json& val);
+iterator insert(const_iterator pos, basic_json&& val);
+
+// (2)
+iterator insert(const_iterator pos, size_type cnt, const basic_json& val);
+
+// (3)
+iterator insert(const_iterator pos, const_iterator first, const_iterator last);
+
+// (4)
+iterator insert(const_iterator pos, initializer_list_t ilist);
+
+// (5)
+void insert(const_iterator first, const_iterator last);
+```
+
+1. Inserts element `val` into array before iterator `pos`.
+2. Inserts `cnt` copies of `val` into array before iterator `pos`.
+3. Inserts elements from range `[first, last)` into array before iterator `pos`.
+4. Inserts elements from initializer list `ilist` into array before iterator `pos`.
+5. Inserts elements from range `[first, last)` into object.
+
+## Iterator invalidation
+
+For all cases where an element is added to an **array**, a reallocation can happen, in which case all iterators
+(including the [`end()`](end.md) iterator) and all references to the elements are invalidated. Otherwise, only the
+[`end()`](end.md) iterator is invalidated. Also, any iterator or reference after the insertion point will point to the
+same index which is now a different value.
+
+For [`ordered_json`](../ordered_json.md), also adding an element to an **object** can yield a reallocation which again
+invalidates all iterators and all references. Also, any iterator or reference after the insertion point will point to
+the same index which is now a different value.
+
+## Parameters
+
+`pos` (in)
+:   iterator before which the content will be inserted; may be the `end()` iterator
+
+`val` (in)
+:   value to insert
+
+`cnt` (in)
+:   number of copies of `val` to insert
+
+`first` (in)
+:   begin of the range of elements to insert
+
+`last` (in)
+:   end of the range of elements to insert
+
+`ilist` (in)
+:   initializer list to insert the values from
+    
+## Return value
+
+1. iterator pointing to the inserted `val`.
+2. iterator pointing to the first element inserted, or `pos` if `#!cpp cnt==0`
+3. iterator pointing to the first element inserted, or `pos` if `#!cpp first==last`
+4. iterator pointing to the first element inserted, or `pos` if `ilist` is empty
+5. (none)
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+1. The function can throw the following exceptions:
+    - Throws [`type_error.309`](../../home/exceptions.md#jsonexceptiontype_error309) if called on JSON values other than
+      arrays; example: `"cannot use insert() with string"`
+    - Throws [`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) if called on an
+      iterator which does not belong to the current JSON value; example: `"iterator does not fit current value"`
+2. The function can throw the following exceptions:
+    - Throws [`type_error.309`](../../home/exceptions.md#jsonexceptiontype_error309) if called on JSON values other than
+      arrays; example: `"cannot use insert() with string"`
+    - Throws [`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) if called on an
+      iterator which does not belong to the current JSON value; example: `"iterator does not fit current value"`
+3. The function can throw the following exceptions:
+    - Throws [`type_error.309`](../../home/exceptions.md#jsonexceptiontype_error309) if called on JSON values other than
+      arrays; example: `"cannot use insert() with string"`
+    - Throws [`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) if called on an
+      iterator which does not belong to the current JSON value; example: `"iterator does not fit current value"`
+    - Throws [`invalid_iterator.210`](../../home/exceptions.md#jsonexceptioninvalid_iterator210) if `first` and `last`
+      do not belong to the same JSON value; example: `"iterators do not fit"`
+    - Throws [`invalid_iterator.211`](../../home/exceptions.md#jsonexceptioninvalid_iterator211) if `first` or `last`
+      are iterators into container for which insert is called; example: `"passed iterators may not belong to container"`
+4. The function can throw the following exceptions:
+    - Throws [`type_error.309`](../../home/exceptions.md#jsonexceptiontype_error309) if called on JSON values other than
+      arrays; example: `"cannot use insert() with string"`
+    - Throws [`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) if called on an
+      iterator which does not belong to the current JSON value; example: `"iterator does not fit current value"`
+5. The function can throw the following exceptions:
+    - Throws [`type_error.309`](../../home/exceptions.md#jsonexceptiontype_error309) if called on JSON values other than
+      objects; example: `"cannot use insert() with string"`
+    - Throws [`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) if called on an
+      iterator which does not belong to the current JSON value; example: `"iterator does not fit current value"`
+    - Throws [`invalid_iterator.210`](../../home/exceptions.md#jsonexceptioninvalid_iterator210) if `first` and `last`
+      do not belong to the same JSON value; example: `"iterators do not fit"`
+
+## Complexity
+
+1. Constant plus linear in the distance between `pos` and end of the container.
+2. Linear in `cnt` plus linear in the distance between `pos` and end of the container.
+3. Linear in `#!cpp std::distance(first, last)` plus linear in the distance between `pos` and end of the container.
+4. Linear in `ilist.size()` plus linear in the distance between `pos` and end of the container.
+5. Logarithmic: `O(N*log(size() + N))`, where `N` is the number of elements to insert.
+
+## Examples
+
+??? example "Example (1): insert element into array"
+
+    The example shows how `insert()` is used.
+    
+    ```cpp
+    --8<-- "examples/insert.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/insert.output"
+    ```
+
+??? example "Example (2): insert copies of element into array"
+
+    The example shows how `insert()` is used.
+    
+    ```cpp
+    --8<-- "examples/insert__count.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/insert__count.output"
+    ```
+
+??? example "Example (3): insert range of elements into array"
+
+    The example shows how `insert()` is used.
+    
+    ```cpp
+    --8<-- "examples/insert__range.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/insert__range.output"
+    ```
+
+??? example "Example (4): insert elements from initializer list into array"
+
+    The example shows how `insert()` is used.
+    
+    ```cpp
+    --8<-- "examples/insert__ilist.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/insert__ilist.output"
+    ```
+
+??? example "Example (5): insert range of elements into object"
+
+    The example shows how `insert()` is used.
+    
+    ```cpp
+    --8<-- "examples/insert__range_object.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/insert__range_object.output"
+    ```
+
+## Version history
+
+1. Added in version 1.0.0.
+2. Added in version 1.0.0.
+3. Added in version 1.0.0.
+4. Added in version 1.0.0.
+5. Added in version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/invalid_iterator.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/invalid_iterator.md
new file mode 100644
index 00000000..3f0f7535
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/invalid_iterator.md
@@ -0,0 +1,77 @@
+# <small>nlohmann::basic_json::</small>invalid_iterator
+
+```cpp
+class invalid_iterator : public exception;
+```
+
+This exception is thrown if iterators passed to a library function do not match the expected semantics.
+
+Exceptions have ids 2xx (see [list of iterator errors](../../home/exceptions.md#iterator-errors)).
+
+```mermaid
+classDiagram
+  direction LR
+  
+    class std_exception ["std::exception"] {
+        <<interface>>
+    }
+
+    class json_exception ["basic_json::exception"] {
+        +const int id
+        +const char* what() const
+    }
+    
+    class json_parse_error ["basic_json::parse_error"] {
+        +const std::size_t byte
+    }
+
+    class json_invalid_iterator ["basic_json::invalid_iterator"]
+    class json_type_error ["basic_json::type_error"]
+    class json_out_of_range ["basic_json::out_of_range"]
+    class json_other_error ["basic_json::other_error"]
+
+    std_exception <|-- json_exception
+    json_exception <|-- json_parse_error
+    json_exception <|-- json_invalid_iterator
+    json_exception <|-- json_type_error
+    json_exception <|-- json_out_of_range
+    json_exception <|-- json_other_error
+
+    style json_invalid_iterator fill:#CCCCFF
+```
+
+## Member functions
+
+- **what** - returns explanatory string
+
+## Member variables
+
+- **id** - the id of the exception
+
+## Examples
+
+??? example
+
+    The following code shows how a `invalid_iterator` exception can be caught.
+    
+    ```cpp
+    --8<-- "examples/invalid_iterator.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/invalid_iterator.output"
+    ```
+
+## See also
+
+- [List of iterator errors](../../home/exceptions.md#iterator-errors)
+- [`parse_error`](parse_error.md) for exceptions indicating a parse error
+- [`type_error`](type_error.md) for exceptions indicating executing a member function with a wrong type
+- [`out_of_range`](out_of_range.md) for exceptions indicating access out of the defined range
+- [`other_error`](other_error.md) for exceptions indicating other library errors
+
+## Version history
+
+- Since version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_array.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_array.md
new file mode 100644
index 00000000..64468c35
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_array.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::basic_json::</small>is_array
+
+```cpp
+constexpr bool is_array() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is an array.
+    
+## Return value
+
+`#!cpp true` if type is an array, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_array()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_array.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_array.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_binary.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_binary.md
new file mode 100644
index 00000000..ea48d745
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_binary.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::basic_json::</small>is_binary
+
+```cpp
+constexpr bool is_binary() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is binary array.
+    
+## Return value
+
+`#!cpp true` if type is binary, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_binary()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_binary.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_binary.output"
+    ```
+
+## Version history
+
+- Added in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_boolean.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_boolean.md
new file mode 100644
index 00000000..dc41d84b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_boolean.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::basic_json::</small>is_boolean
+
+```cpp
+constexpr bool is_boolean() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is `#!json true` or `#!json false`.
+    
+## Return value
+
+`#!cpp true` if type is boolean, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_boolean()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_boolean.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_boolean.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_discarded.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_discarded.md
new file mode 100644
index 00000000..663cbf88
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_discarded.md
@@ -0,0 +1,72 @@
+# <small>nlohmann::basic_json::</small>is_discarded
+
+```cpp
+constexpr bool is_discarded() const noexcept;
+```
+
+This function returns `#!cpp true` for a JSON value if either:
+
+- the value was discarded during parsing with a callback function (see [`parser_callback_t`](parser_callback_t.md)), or
+- the value is the result of parsing invalid JSON with parameter `allow_exceptions` set to `#!cpp false`; see
+  [`parse`](parse.md) for more information.
+
+## Return value
+
+`#!cpp true` if type is discarded, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Notes
+
+!!! note "Comparisons"
+
+    Discarded values are never compared equal with [`operator==`](operator_eq.md). That is, checking whether a JSON
+    value `j` is discarded will only work via:
+    
+    ```cpp
+    j.is_discarded()
+    ```
+    
+    because
+    
+    ```cpp
+    j == json::value_t::discarded
+    ```
+    
+    will always be `#!cpp false`.
+
+!!! note "Removal during parsing with callback functions"
+
+    When a value is discarded by a callback function (see [`parser_callback_t`](parser_callback_t.md)) during parsing,
+    then it is removed when it is part of a structured value. For instance, if the second value of an array is discarded,
+    instead of `#!json [null, discarded, false]`, the array `#!json [null, false]` is returned. Only if the top-level
+    value is discarded, the return value of the `parse` call is discarded.
+
+This function will always be `#!cpp false` for JSON values after parsing. That is, discarded values can only occur
+during parsing, but will be removed when inside a structured value or replaced by null in other cases.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_discarded()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_discarded.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_discarded.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_null.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_null.md
new file mode 100644
index 00000000..d080ad32
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_null.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::basic_json::</small>is_null
+
+```cpp
+constexpr bool is_null() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is `#!json null`.
+    
+## Return value
+
+`#!cpp true` if type is `#!json null`, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_null()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_null.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_null.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number.md
new file mode 100644
index 00000000..9807911b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number.md
@@ -0,0 +1,56 @@
+# <small>nlohmann::basic_json::</small>is_number
+
+```cpp
+constexpr bool is_number() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is a number. This includes both integer (signed and
+unsigned) and floating-point values.
+    
+## Return value
+
+`#!cpp true` if type is number (regardless whether integer, unsigned integer or floating-type), `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Possible implementation
+
+```cpp
+constexpr bool is_number() const noexcept
+{
+    return is_number_integer() || is_number_float();
+}
+```
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_number()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_number.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_number.output"
+    ```
+
+## See also
+
+- [is_number_integer()](is_number_integer.md) check if value is an integer or unsigned integer number
+- [is_number_unsigned()](is_number_unsigned.md) check if value is an unsigned integer number
+- [is_number_float()](is_number_float.md) check if value is a floating-point number
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended to also return `#!cpp true` for unsigned integers in 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_float.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_float.md
new file mode 100644
index 00000000..68d0cfb0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_float.md
@@ -0,0 +1,46 @@
+# <small>nlohmann::basic_json::</small>is_number_float
+
+```cpp
+constexpr bool is_number_float() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is a floating-point number. This excludes signed and
+unsigned integer values.
+    
+## Return value
+
+`#!cpp true` if type is a floating-point number, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_number_float()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_number_float.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_number_float.output"
+    ```
+
+## See also
+
+- [is_number()](is_number.md) check if value is a number
+- [is_number_integer()](is_number_integer.md) check if value is an integer or unsigned integer number
+- [is_number_unsigned()](is_number_unsigned.md) check if value is an unsigned integer number
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_integer.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_integer.md
new file mode 100644
index 00000000..8ca214ae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_integer.md
@@ -0,0 +1,47 @@
+# <small>nlohmann::basic_json::</small>is_number_integer
+
+```cpp
+constexpr bool is_number_integer() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is a signed or unsigned integer number. This excludes
+floating-point values.
+    
+## Return value
+
+`#!cpp true` if type is an integer or unsigned integer number, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_number_integer()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_number_integer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_number_integer.output"
+    ```
+
+## See also
+
+- [is_number()](is_number.md) check if value is a number
+- [is_number_unsigned()](is_number_unsigned.md) check if value is an unsigned integer number
+- [is_number_float()](is_number_float.md) check if value is a floating-point number
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended to also return `#!cpp true` for unsigned integers in 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_unsigned.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_unsigned.md
new file mode 100644
index 00000000..2ac98a5f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_number_unsigned.md
@@ -0,0 +1,46 @@
+# <small>nlohmann::basic_json::</small>is_number_unsigned
+
+```cpp
+constexpr bool is_number_unsigned() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is an unsigned integer number. This excludes
+floating-point and signed integer values.
+    
+## Return value
+
+`#!cpp true` if type is an unsigned integer number, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_number_unsigned()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_number_unsigned.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_number_unsigned.output"
+    ```
+
+## See also
+
+- [is_number()](is_number.md) check if value is a number
+- [is_number_integer()](is_number_integer.md) check if value is an integer or unsigned integer number
+- [is_number_float()](is_number_float.md) check if value is a floating-point number
+
+## Version history
+
+- Added in version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_object.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_object.md
new file mode 100644
index 00000000..04457013
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_object.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::basic_json::</small>is_object
+
+```cpp
+constexpr bool is_object() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is an object.
+    
+## Return value
+
+`#!cpp true` if type is an object, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_object()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_object.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_object.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_primitive.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_primitive.md
new file mode 100644
index 00000000..cf6cbbd4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_primitive.md
@@ -0,0 +1,69 @@
+# <small>nlohmann::basic_json::</small>is_primitive
+
+```cpp
+constexpr bool is_primitive() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON type is primitive (string, number, boolean, `#!json null`,
+binary).
+    
+## Return value
+
+`#!cpp true` if type is primitive (string, number, boolean, `#!json null`, or binary), `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Possible implementation
+
+```cpp
+constexpr bool is_primitive() const noexcept
+{
+    return is_null() || is_string() || is_boolean() || is_number() || is_binary();
+}
+```
+
+## Notes
+
+The term *primitive* stems from [RFC 8259](https://tools.ietf.org/html/rfc8259):
+
+> JSON can represent four primitive types (strings, numbers, booleans, and null) and two structured types (objects and
+> arrays).
+
+This library extends primitive types to binary types, because binary types are  roughly comparable to strings. Hence,
+`is_primitive()` returns `#!cpp true` for binary values.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_primitive()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_primitive.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_primitive.output"
+    ```
+
+## See also
+
+- [is_structured()](is_structured.md) returns whether JSON value is structured
+- [is_null()](is_null.md) returns whether JSON value is `null`
+- [is_string()](is_string.md) returns whether JSON value is a string
+- [is_boolean()](is_boolean.md) returns whether JSON value is a boolean
+- [is_number()](is_number.md) returns whether JSON value is a number
+- [is_binary()](is_binary.md) returns whether JSON value is a binary array
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended to return `#!cpp true` for binary types in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_string.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_string.md
new file mode 100644
index 00000000..b82c9246
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_string.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::basic_json::</small>is_string
+
+```cpp
+constexpr bool is_string() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is a string.
+    
+## Return value
+
+`#!cpp true` if type is a string, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_string()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_string.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_string.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_structured.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_structured.md
new file mode 100644
index 00000000..ecca80d8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/is_structured.md
@@ -0,0 +1,63 @@
+# <small>nlohmann::basic_json::</small>is_structured
+
+```cpp
+constexpr bool is_structured() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON type is structured (array or object).
+    
+## Return value
+
+`#!cpp true` if type is structured (array or object), `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Possible implementation
+
+```cpp
+constexpr bool is_structured() const noexcept
+{
+    return is_array() || is_object();
+}
+```
+
+## Notes
+
+The term *structured* stems from [RFC 8259](https://tools.ietf.org/html/rfc8259):
+
+> JSON can represent four primitive types (strings, numbers, booleans, and null) and two structured types (objects and
+> arrays).
+
+Note that though strings are containers in C++, they are treated as primitive values in JSON.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_structured()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_structured.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_structured.output"
+    ```
+
+## See also
+
+- [is_primitive()](is_primitive.md) returns whether JSON value is primitive
+- [is_array()](is_array.md) returns whether value is an array
+- [is_object()](is_object.md) returns whether value is an object
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/items.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/items.md
new file mode 100644
index 00000000..be32bbfd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/items.md
@@ -0,0 +1,100 @@
+# <small>nlohmann::basic_json::</small>items
+
+```cpp
+iteration_proxy<iterator> items() noexcept;
+iteration_proxy<const_iterator> items() const noexcept;
+```
+
+This function allows accessing `iterator::key()` and `iterator::value()` during range-based for loops. In these loops, a
+reference to the JSON values is returned, so there is no access to the underlying iterator.
+
+For loop without `items()` function:
+
+```cpp
+for (auto it = j_object.begin(); it != j_object.end(); ++it)
+{
+    std::cout << "key: " << it.key() << ", value:" << it.value() << '\n';
+}
+```
+
+Range-based for loop without `items()` function:
+
+```cpp
+for (auto it : j_object)
+{
+    // "it" is of type json::reference and has no key() member
+    std::cout << "value: " << it << '\n';
+}
+```
+
+Range-based for loop with `items()` function:
+
+```cpp
+for (auto& el : j_object.items())
+{
+    std::cout << "key: " << el.key() << ", value:" << el.value() << '\n';
+}
+```
+
+The `items()` function also allows using
+[structured bindings](https://en.cppreference.com/w/cpp/language/structured_binding) (C++17):
+
+```cpp
+for (auto& [key, val] : j_object.items())
+{
+    std::cout << "key: " << key << ", value:" << val << '\n';
+}
+```
+
+## Return value
+
+iteration proxy object wrapping the current value with an interface to use in range-based for loops
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Constant.
+
+## Notes
+
+When iterating over an array, `key()` will return the index of the element as string (see example). For primitive types
+(e.g., numbers), `key()` returns an empty string.
+
+!!! danger "Lifetime issues"
+
+    Using `items()` on temporary objects is dangerous. Make sure the object's lifetime exceeds the iteration. See
+    [#2040](https://github.com/nlohmann/json/issues/2040) for more information.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `items()`.
+    
+    ```cpp
+    --8<-- "examples/items.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/items.output"
+    ```
+
+## Version history
+
+- Added `iterator_wrapper` in version 3.0.0.
+- Added `items` and deprecated `iterator_wrapper` in version 3.1.0.
+- Added structured binding support in version 3.5.0.
+
+!!! warning "Deprecation"
+
+    This function replaces the static function `iterator_wrapper` which was introduced in version 1.0.0, but has been
+    deprecated in version 3.1.0. Function `iterator_wrapper` will be removed in version 4.0.0. Please replace all
+    occurrences of `#!cpp iterator_wrapper(j)` with `#!cpp j.items()`.
+
+    You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated
+    function.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/json_base_class_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/json_base_class_t.md
new file mode 100644
index 00000000..75752049
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/json_base_class_t.md
@@ -0,0 +1,45 @@
+# <small>nlohmann::basic_json::</small>json_base_class_t
+
+```cpp
+using json_base_class_t = detail::json_base_class<CustomBaseClass>;
+```
+
+The base class used to inject custom functionality into each instance of `basic_json`.
+Examples of such functionality might be metadata, additional member functions (e.g., visitors), or other application-specific code.
+
+## Template parameters
+
+`CustomBaseClass`
+:   the base class to be added to `basic_json`
+
+## Notes
+
+#### Default type
+
+The default value for `CustomBaseClass` is `void`. In this case an
+[empty base class](https://en.cppreference.com/w/cpp/language/ebo) is used and no additional functionality is injected.
+
+#### Limitations
+
+The type `CustomBaseClass` has to be a default-constructible class.
+`basic_json` only supports copy/move construction/assignment if `CustomBaseClass` does so as well.
+
+## Examples
+
+??? example
+
+    The following code shows how to inject custom data and methods for each node.
+     
+    ```cpp
+    --8<-- "examples/json_base_class_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_base_class_t.output"
+    ```
+
+## Version history
+
+- Added in version 3.12.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/json_serializer.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/json_serializer.md
new file mode 100644
index 00000000..24a37735
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/json_serializer.md
@@ -0,0 +1,41 @@
+# <small>nlohmann::basic_json::</small>json_serializer
+
+```cpp
+template<typename T, typename SFINAE>
+using json_serializer = JSONSerializer<T, SFINAE>;
+```
+
+## Template parameters
+
+`T`
+:   type to convert; will be used in the `to_json`/`from_json` functions
+
+`SFINAE`
+:   type to add compile type checks via SFINAE; usually `#!cpp void`
+
+## Notes
+
+#### Default type
+
+The default values for `json_serializer` is [`adl_serializer`](../adl_serializer/index.md).
+
+## Examples
+
+??? example
+
+    The example below shows how a conversion of a non-default-constructible type is implemented via a specialization of
+    the `adl_serializer`.
+        
+    ```cpp
+    --8<-- "examples/from_json__non_default_constructible.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/from_json__non_default_constructible.output"
+    ```
+
+## Version history
+
+- Since version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/max_size.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/max_size.md
new file mode 100644
index 00000000..4c0c5752
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/max_size.md
@@ -0,0 +1,60 @@
+# <small>nlohmann::basic_json::</small>max_size
+
+```cpp
+size_type max_size() const noexcept;
+```
+
+Returns the maximum number of elements a JSON value is able to hold due to system or library implementation limitations,
+i.e. `std::distance(begin(), end())` for the JSON value.
+    
+## Return value
+
+The return value depends on the different types and is defined as follows:
+
+| Value type | return value                              |
+|------------|-------------------------------------------|
+| null       | `0` (same as [`size()`](size.md))         |
+| boolean    | `1` (same as [`size()`](size.md))         |
+| string     | `1` (same as [`size()`](size.md))         |
+| number     | `1` (same as [`size()`](size.md))         |
+| binary     | `1` (same as [`size()`](size.md))         |
+| object     | result of function `object_t::max_size()` |
+| array      | result of function `array_t::max_size()`  |
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant, as long as [`array_t`](array_t.md) and [`object_t`](object_t.md) satisfy the
+[Container](https://en.cppreference.com/w/cpp/named_req/Container) concept; that is, their `max_size()` functions have
+constant complexity.
+
+## Notes
+
+This function does not return the maximal length of a string stored as JSON value -- it returns the maximal number of
+string elements the JSON value can store which is `1`.
+
+## Examples
+
+??? example
+
+    The following code calls `max_size()` on the different value types.
+        
+    ```cpp
+    --8<-- "examples/max_size.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/max_size.output"
+    ```
+
+    Note the output is platform-dependent.
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended to return `1` for binary types in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/merge_patch.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/merge_patch.md
new file mode 100644
index 00000000..1718c922
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/merge_patch.md
@@ -0,0 +1,63 @@
+# <small>nlohmann::basic_json::</small>merge_patch
+
+```cpp
+void merge_patch(const basic_json& apply_patch);
+```
+
+The merge patch format is primarily intended for use with the HTTP PATCH method as a means of describing a set of
+modifications to a target resource's content. This function applies a merge patch to the current JSON value.
+
+The function implements the following algorithm from Section 2 of
+[RFC 7396 (JSON Merge Patch)](https://tools.ietf.org/html/rfc7396):
+
+```python
+define MergePatch(Target, Patch):
+  if Patch is an Object:
+    if Target is not an Object:
+      Target = {} // Ignore the contents and set it to an empty Object
+    for each Name/Value pair in Patch:
+      if Value is null:
+        if Name exists in Target:
+          remove the Name/Value pair from Target
+      else:
+        Target[Name] = MergePatch(Target[Name], Value)
+    return Target
+  else:
+    return Patch
+```
+
+Thereby, `Target` is the current object; that is, the patch is applied to the current value.
+
+## Parameters
+
+`apply_patch` (in)
+:   the patch to apply
+
+## Complexity
+
+Linear in the lengths of `apply_patch`.
+
+## Examples
+
+??? example
+
+    The following code shows how a JSON Merge Patch is applied to a JSON document.
+     
+    ```cpp
+    --8<-- "examples/merge_patch.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/merge_patch.output"
+    ```
+
+## See also
+
+- [RFC 7396 (JSON Merge Patch)](https://tools.ietf.org/html/rfc7396)
+- [patch](patch.md) apply a JSON patch
+
+## Version history
+
+- Added in version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/meta.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/meta.md
new file mode 100644
index 00000000..c584f9b6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/meta.md
@@ -0,0 +1,56 @@
+# <small>nlohmann::basic_json::</small>meta
+
+```cpp
+static basic_json meta();
+```
+
+This function returns a JSON object with information about the library, including the version number and information on
+the platform and compiler.
+    
+## Return value
+
+JSON object holding version information
+
+| key         | description                                                                                                                                                                                                                                                                    |
+|-------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `compiler`  | Information on the used compiler. It is an object with the following keys: `c++` (the used C++ standard), `family` (the compiler family; possible values are `clang`, `icc`, `gcc`, `ilecpp`, `msvc`, `pgcpp`, `sunpro`, and `unknown`), and `version` (the compiler version). |
+| `copyright` | The copyright line for the library as string.                                                                                                                                                                                                                                  |
+| `name`      | The name of the library as string.                                                                                                                                                                                                                                             |
+| `platform`  | The used platform as string. Possible values are `win32`, `linux`, `apple`, `unix`, and `unknown`.                                                                                                                                                                             |
+| `url`       | The URL of the project as string.                                                                                                                                                                                                                                              |
+| `version`   | The version of the library. It is an object with the following keys: `major`, `minor`, and `patch` as defined by [Semantic Versioning](http://semver.org), and `string` (the version string).                                                                                  |
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes to any JSON value.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example output of the `meta()` function.
+    
+    ```cpp
+    --8<-- "examples/meta.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/meta.output"
+    ```
+
+    Note the output is platform-dependent.
+
+## See also
+
+- [**NLOHMANN_JSON_VERSION_MAJOR**/**NLOHMANN_JSON_VERSION_MINOR**/**NLOHMANN_JSON_VERSION_PATCH**](../macros/nlohmann_json_version_major.md)
+  \- library version information
+
+## Version history
+
+- Added in version 2.1.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_float_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_float_t.md
new file mode 100644
index 00000000..50aa43b4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_float_t.md
@@ -0,0 +1,70 @@
+# <small>nlohmann::basic_json::</small>number_float_t
+
+```cpp
+using number_float_t = NumberFloatType;
+```
+
+The type used to store JSON numbers (floating-point).
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes numbers as follows:
+> The representation of numbers is similar to that used in most programming languages. A number is represented in base
+> 10 using decimal digits. It contains an integer component that may be prefixed with an optional minus sign, which may
+> be followed by a fraction part and/or an exponent part. Leading zeros are not allowed. (...) Numeric values that
+> cannot be represented in the grammar below (such as Infinity and NaN) are not permitted.
+
+This description includes both integer and floating-point numbers. However, C++ allows more precise storage if it is
+known whether the number is a signed integer, an unsigned integer or a floating-point number. Therefore, three different
+types, [`number_integer_t`](number_integer_t.md), [`number_unsigned_t`](number_unsigned_t.md) and `number_float_t` are
+used.
+
+To store floating-point numbers in C++, a type is defined by the template parameter `NumberFloatType` which chooses the
+type to use.
+
+## Notes
+
+#### Default type
+
+With the default values for `NumberFloatType` (`double`), the default value for `number_float_t` is `#!cpp double`.
+
+#### Default behavior
+
+- The restrictions about leading zeros is not enforced in C++. Instead, leading zeros in floating-point literals will be
+  ignored. Internally, the value will be stored as decimal number. For instance, the C++ floating-point literal `01.2`
+  will be serialized to `1.2`. During deserialization, leading zeros yield an error.
+- Not-a-number (NaN) values will be serialized to `null`.
+
+#### Limits
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) states:
+> This specification allows implementations to set limits on the range and precision of numbers accepted. Since software
+> that implements IEEE 754-2008 binary64 (double precision) numbers is generally available and widely used, good
+> interoperability can be achieved by implementations that expect no more precision or range than these provide, in the
+> sense that implementations will approximate JSON numbers within the expected precision.
+
+This implementation does exactly follow this approach, as it uses double precision floating-point numbers. Note values
+smaller than `-1.79769313486232e+308` and values greater than `1.79769313486232e+308` will be stored as NaN internally
+and be serialized to `null`.
+
+#### Storage
+
+Floating-point number values are stored directly inside a `basic_json` type.
+
+## Examples
+
+??? example
+
+    The following code shows that `number_float_t` is by default, a typedef to `#!cpp double`.
+     
+    ```cpp
+    --8<-- "examples/number_float_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/number_float_t.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_integer_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_integer_t.md
new file mode 100644
index 00000000..9bb3835a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_integer_t.md
@@ -0,0 +1,76 @@
+# <small>nlohmann::basic_json::</small>number_integer_t
+
+```cpp
+using number_integer_t = NumberIntegerType;
+```
+
+The type used to store JSON numbers (integers).
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes numbers as follows:
+> The representation of numbers is similar to that used in most programming languages. A number is represented in base
+> 10 using decimal digits. It contains an integer component that may be prefixed with an optional minus sign, which may
+> be followed by a fraction part and/or an exponent part. Leading zeros are not allowed. (...) Numeric values that
+> cannot be represented in the grammar below (such as Infinity and NaN) are not permitted.
+
+This description includes both integer and floating-point numbers. However, C++ allows more precise storage if it is
+known whether the number is a signed integer, an unsigned integer or a floating-point number. Therefore, three different
+types, `number_integer_t`,  [`number_unsigned_t`](number_unsigned_t.md) and [`number_float_t`](number_float_t.md) are
+used.
+
+To store integer numbers in C++, a type is defined by the template parameter `NumberIntegerType` which chooses the type
+to use.
+
+## Notes
+
+#### Default type
+
+With the default values for `NumberIntegerType` (`std::int64_t`), the default value for `number_integer_t` is
+`#!cpp std::int64_t`.
+
+#### Default behavior
+
+- The restrictions about leading zeros is not enforced in C++. Instead, leading zeros in integer literals lead to an
+  interpretation as octal number. Internally, the value will be stored as decimal number. For instance, the C++ integer
+  literal `010` will be serialized to `8`. During deserialization, leading zeros yield an error.
+- Not-a-number (NaN) values will be serialized to `null`.
+
+#### Limits
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) specifies:
+> An implementation may set limits on the range and precision of numbers.
+
+When the default type is used, the maximal integer number that can be stored is `9223372036854775807` (INT64_MAX) and
+the minimal integer number that can be stored is `-9223372036854775808` (INT64_MIN). Integer numbers that are out of
+range will yield over/underflow when used in a constructor. During deserialization, too large or small integer numbers
+will be automatically be stored as [`number_unsigned_t`](number_unsigned_t.md) or [`number_float_t`](number_float_t.md).
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) further states:
+> Note that when such software is used, numbers that are integers and are in the range $[-2^{53}+1, 2^{53}-1]$ are
+> interoperable in the sense that implementations will agree exactly on their numeric values.
+
+As this range is a subrange of the exactly supported range [INT64_MIN, INT64_MAX], this class's integer type is
+interoperable.
+
+#### Storage
+
+Integer number values are stored directly inside a `basic_json` type.
+
+## Examples
+
+??? example
+
+    The following code shows that `number_integer_t` is by default, a typedef to `#!cpp std::int64_t`.
+     
+    ```cpp
+    --8<-- "examples/number_integer_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/number_integer_t.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_unsigned_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_unsigned_t.md
new file mode 100644
index 00000000..8a1540a5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/number_unsigned_t.md
@@ -0,0 +1,76 @@
+# <small>nlohmann::basic_json::</small>number_unsigned_t
+
+```cpp
+using number_unsigned_t = NumberUnsignedType;
+```
+
+The type used to store JSON numbers (unsigned).
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes numbers as follows:
+> The representation of numbers is similar to that used in most programming languages. A number is represented in base
+> 10 using decimal digits. It contains an integer component that may be prefixed with an optional minus sign, which may
+> be followed by a fraction part and/or an exponent part. Leading zeros are not allowed. (...) Numeric values that
+> cannot be represented in the grammar below (such as Infinity and NaN) are not permitted.
+
+This description includes both integer and floating-point numbers. However, C++ allows more precise storage if it is
+known whether the number is a signed integer, an unsigned integer or a floating-point number. Therefore, three different
+types, [`number_integer_t`](number_integer_t.md), `number_unsigned_t` and [`number_float_t`](number_float_t.md) are
+used.
+
+To store unsigned integer numbers in C++, a type is defined by the template parameter `NumberUnsignedType` which chooses
+the type to use.
+
+## Notes
+
+#### Default type
+
+With the default values for `NumberUnsignedType` (`std::uint64_t`), the default value for `number_unsigned_t` is
+`#!cpp std::uint64_t`.
+
+#### Default behavior
+
+- The restrictions about leading zeros is not enforced in C++. Instead, leading zeros in integer literals lead to an
+  interpretation as octal number. Internally, the value will be stored as decimal number. For instance, the C++ integer 
+  literal `010` will be serialized to `8`. During deserialization, leading zeros yield an error.
+- Not-a-number (NaN) values will be serialized to `null`.
+
+#### Limits
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) specifies:
+> An implementation may set limits on the range and precision of numbers.
+
+When the default type is used, the maximal integer number that can be stored is `18446744073709551615` (UINT64_MAX) and
+the minimal integer number that can be stored is `0`. Integer numbers that are out of range will yield over/underflow
+when used in a constructor. During deserialization, too large or small integer numbers will be automatically be stored
+as [`number_integer_t`](number_integer_t.md) or [`number_float_t`](number_float_t.md).
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) further states:
+> Note that when such software is used, numbers that are integers and are in the range \f$[-2^{53}+1, 2^{53}-1]\f$ are
+> interoperable in the sense that implementations will agree exactly on their numeric values.
+
+As this range is a subrange (when considered in conjunction with the `number_integer_t` type) of the exactly supported
+range [0, UINT64_MAX], this class's integer type is interoperable.
+
+#### Storage
+
+Integer number values are stored directly inside a `basic_json` type.
+
+## Examples
+
+??? example
+
+    The following code shows that `number_unsigned_t` is by default, a typedef to `#!cpp std::uint64_t`.
+     
+    ```cpp
+    --8<-- "examples/number_unsigned_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/number_unsigned_t.output"
+    ```
+
+## Version history
+
+- Added in version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object.md
new file mode 100644
index 00000000..9bdbddb6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object.md
@@ -0,0 +1,63 @@
+# <small>nlohmann::basic_json::</small>object
+
+```cpp
+static basic_json object(initializer_list_t init = {});
+```
+
+Creates a JSON object value from a given initializer list. The initializer lists elements must be pairs, and their first
+elements must be strings. If the initializer list is empty, the empty object `#!json {}` is created.
+
+## Parameters
+
+`init` (in)
+:   initializer list with JSON values to create an object from (optional)
+
+## Return value
+
+JSON object value
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+Throws [`type_error.301`](../../home/exceptions.md#jsonexceptiontype_error301) if `init` is not a list of pairs whose
+first elements are strings. In this case, no object can be created. When such a value is passed to
+`basic_json(initializer_list_t, bool, value_t)`, an array would have been created from the passed initializer list
+`init`. See example below.
+
+## Complexity
+
+Linear in the size of `init`.
+
+## Notes
+
+This function is only added for symmetry reasons. In contrast to the related function `array(initializer_list_t)`, there
+are no cases which can only be expressed by this function. That is, any initializer list `init` can also be passed to
+the initializer list constructor `basic_json(initializer_list_t, bool, value_t)`.
+    
+## Examples
+
+??? example
+
+    The following code shows an example for the `object` function.
+
+    ```cpp
+    --8<-- "examples/object.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/object.output"
+    ```
+
+## See also
+
+- [`basic_json(initializer_list_t)`](basic_json.md) - create a JSON value from an initializer list
+- [`array`](array.md) - create a JSON array value from an initializer list
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object_comparator_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object_comparator_t.md
new file mode 100644
index 00000000..d41b9822
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object_comparator_t.md
@@ -0,0 +1,32 @@
+# <small>nlohmann::basic_json::</small>object_comparator_t
+
+```cpp
+using object_comparator_t = typename object_t::key_compare;
+// or
+using object_comparator_t = default_object_comparator_t;
+```
+
+The comparator used by [`object_t`](object_t.md). Defined as `#!cpp typename object_t::key_compare` if available,
+and [`default_object_comparator_t`](default_object_comparator_t.md) otherwise.
+
+## Examples
+
+??? example
+
+    The example below demonstrates the used object comparator.
+
+    ```cpp
+    --8<-- "examples/object_comparator_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/object_comparator_t.output"
+    ```
+
+## Version history
+
+- Added in version 3.0.0.
+- Changed to be conditionally defined as `#!cpp typename object_t::key_compare` or `default_object_comparator_t` in
+  version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object_t.md
new file mode 100644
index 00000000..39f68b08
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/object_t.md
@@ -0,0 +1,114 @@
+# <small>nlohmann::basic_json::</small>object_t
+
+```cpp
+using object_t = ObjectType<StringType,
+                            basic_json,
+                            default_object_comparator_t,
+                            AllocatorType<std::pair<const StringType, basic_json>>>;
+```
+
+The type used to store JSON objects.
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes JSON objects as follows:
+> An object is an unordered collection of zero or more name/value pairs, where a name is a string and a value is a
+> string, number, boolean, null, object, or array.
+
+To store objects in C++, a type is defined by the template parameters described below.
+
+## Template parameters
+
+`ObjectType`
+:   the container to store objects (e.g., `std::map` or `std::unordered_map`)
+
+`StringType`
+:   the type of the keys or names (e.g., `std::string`). The comparison function `std::less<StringType>` is used to
+    order elements inside the container.
+
+`AllocatorType`
+:   the allocator to use for objects (e.g., `std::allocator`)
+
+## Notes
+
+#### Default type
+
+With the default values for `ObjectType` (`std::map`), `StringType` (`std::string`), and `AllocatorType`
+(`std::allocator`), the default value for `object_t` is:
+
+```cpp
+// until C++14
+std::map<
+  std::string, // key_type
+  basic_json, // value_type
+  std::less<std::string>, // key_compare
+  std::allocator<std::pair<const std::string, basic_json>> // allocator_type
+>
+
+// since C++14
+std::map<
+  std::string, // key_type
+  basic_json, // value_type
+  std::less<>, // key_compare
+  std::allocator<std::pair<const std::string, basic_json>> // allocator_type
+>
+```
+
+See [`default_object_comparator_t`](default_object_comparator_t.md) for more information.
+
+#### Behavior
+
+The choice of `object_t` influences the behavior of the JSON class. With the default type, objects have the following
+behavior:
+
+- When all names are unique, objects will be interoperable in the sense that all software implementations receiving that
+  object will agree on the name-value mappings.
+- When the names within an object are not unique, it is unspecified which one of the values for a given key will be
+  chosen. For instance, `#!json {"key": 2, "key": 1}` could be equal to either `#!json {"key": 1}` or
+  `#!json {"key": 2}`.
+- Internally, name/value pairs are stored in lexicographical order of the names. Objects will also be serialized (see
+  [`dump`](dump.md)) in this order. For instance, `#!json {"b": 1, "a": 2}` and `#!json {"a": 2, "b": 1}` will be stored
+  and serialized as `#!json {"a": 2, "b": 1}`.
+- When comparing objects, the order of the name/value pairs is irrelevant. This makes objects interoperable in the sense
+  that they will not be affected by these differences. For instance, `#!json {"b": 1, "a": 2}` and
+  `#!json {"a": 2, "b": 1}` will be treated as equal.
+
+#### Limits
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) specifies:
+> An implementation may set limits on the maximum depth of nesting.
+
+In this class, the object's limit of nesting is not explicitly constrained. However, a maximum depth of nesting may be
+introduced by the compiler or runtime environment. A theoretical limit can be queried by calling the
+[`max_size`](max_size.md) function of a JSON object.
+
+#### Storage
+
+Objects are stored as pointers in a `basic_json` type. That is, for any access to object values, a pointer of type
+`object_t*` must be dereferenced.
+
+#### Object key order
+
+The order name/value pairs are added to the object is *not* preserved by the library. Therefore, iterating an object may
+return name/value pairs in a different order than they were originally stored. In fact, keys will be traversed in
+alphabetical order as `std::map` with `std::less` is used by default. Please note this behavior conforms to
+[RFC 8259](https://tools.ietf.org/html/rfc8259), because any order implements the specified "unordered" nature of JSON
+objects.
+
+## Examples
+
+??? example
+
+    The following code shows that `object_t` is by default, a typedef to `#!cpp std::map<json::string_t, json>`.
+     
+    ```cpp
+    --8<-- "examples/object_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/object_t.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator+=.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator+=.md
new file mode 100644
index 00000000..1591007f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator+=.md
@@ -0,0 +1,124 @@
+# <small>nlohmann::basic_json::</small>operator+=
+
+```cpp
+// (1)
+reference operator+=(basic_json&& val);
+reference operator+=(const basic_json& val);
+
+// (2)
+reference operator+=(const typename object_t::value_type& val);
+
+// (3)
+reference operator+=(initializer_list_t init);
+```
+
+1. Appends the given element `val` to the end of the JSON array. If the function is called on a JSON null value, an
+   empty array is created before appending `val`.
+
+2. Inserts the given element `val` to the JSON object. If the function is called on a JSON null value, an empty object
+   is created before inserting `val`.
+
+3. This function allows using `operator+=` with an initializer list. In case
+
+    1. the current value is an object,
+    2. the initializer list `init` contains only two elements, and
+    3. the first element of `init` is a string,
+
+    `init` is converted into an object element and added using `operator+=(const typename object_t::value_type&)`.
+    Otherwise, `init` is converted to a JSON value and added using `operator+=(basic_json&&)`.
+
+## Iterator invalidation
+
+For all cases where an element is added to an **array**, a reallocation can happen, in which case all iterators (including
+the [`end()`](end.md) iterator) and all references to the elements are invalidated. Otherwise, only the
+[`end()`](end.md) iterator is invalidated.
+
+For [`ordered_json`](../ordered_json.md), also adding an element to an **object** can yield a reallocation which again
+invalidates all iterators and all references.
+
+## Parameters
+
+`val` (in)
+:   the value to add to the JSON array/object
+
+`init` (in)
+:   an initializer list
+
+## Return value
+
+`#!cpp *this`
+
+## Exceptions
+
+All functions can throw the following exception:
+  - Throws [`type_error.308`](../../home/exceptions.md#jsonexceptiontype_error308) when called on a type other than
+    JSON array or null; example: `"cannot use operator+=() with number"`
+
+## Complexity
+
+1. Amortized constant.
+2. Logarithmic in the size of the container, O(log(`size()`)).
+3. Linear in the size of the initializer list `init`.
+
+## Notes
+
+(3) This function is required to resolve an ambiguous overload error, because pairs like `{"key", "value"}` can be both
+interpreted as `object_t::value_type` or `std::initializer_list<basic_json>`, see
+[#235](https://github.com/nlohmann/json/issues/235) for more information.
+
+## Examples
+
+??? example "Example: (1) add element to array"
+
+    The example shows how `push_back()` and `+=` can be used to add elements to a JSON array. Note how the `null` value
+    was silently converted to a JSON array.
+    
+    ```cpp
+    --8<-- "examples/push_back.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/push_back.output"
+    ```
+
+??? example "Example: (2) add element to object"
+
+    The example shows how `push_back()` and `+=` can be used to add elements to a JSON object. Note how the `null` value
+    was silently converted to a JSON object.
+
+    ```cpp
+    --8<-- "examples/push_back__object_t__value.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/push_back__object_t__value.output"
+    ```
+
+??? example "Example: (3) add to object from initializer list"
+
+    The example shows how initializer lists are treated as objects when possible.
+
+    ```cpp
+    --8<-- "examples/push_back__initializer_list.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/push_back__initializer_list.output"
+    ```
+
+## See also
+
+- [emplace_back](emplace_back.md) add a value to an array
+- [push_back](push_back.md) add a value to an array/object
+
+## Version history
+
+1. Since version 1.0.0.
+2. Since version 1.0.0.
+2. Since version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator=.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator=.md
new file mode 100644
index 00000000..4e0b9144
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator=.md
@@ -0,0 +1,43 @@
+# <small>nlohmann::basic_json::</small>operator=
+
+```cpp
+basic_json& operator=(basic_json other) noexcept (
+    std::is_nothrow_move_constructible<value_t>::value &&
+    std::is_nothrow_move_assignable<value_t>::value &&
+    std::is_nothrow_move_constructible<json_value>::value &&
+    std::is_nothrow_move_assignable<json_value>::value
+);
+```
+
+Copy assignment operator. Copies a JSON value via the "copy and swap" strategy: It is expressed in terms of the copy
+constructor, destructor, and the `swap()` member function.
+
+## Parameters
+
+`other` (in)
+:   value to copy from
+
+## Complexity
+
+Linear.
+
+## Examples
+
+??? example
+
+    The code below shows and example for the copy assignment. It creates a copy of value `a` which is then swapped with
+    `b`. Finally, the copy of `a` (which is the null value after the swap) is destroyed.
+     
+    ```cpp
+    --8<-- "examples/basic_json__copyassignment.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/basic_json__copyassignment.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator[].md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator[].md
new file mode 100644
index 00000000..3eebd562
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator[].md
@@ -0,0 +1,250 @@
+# <small>nlohmann::basic_json::</small>operator[]
+
+```cpp
+// (1)
+reference operator[](size_type idx);
+const_reference operator[](size_type idx) const;
+
+// (2)
+reference operator[](typename object_t::key_type key);
+const_reference operator[](const typename object_t::key_type& key) const;
+
+// (3)
+template<typename KeyType>
+reference operator[](KeyType&& key);
+template<typename KeyType>
+const_reference operator[](KeyType&& key) const;
+
+// (4)
+reference operator[](const json_pointer& ptr);
+const_reference operator[](const json_pointer& ptr) const;
+```
+
+1. Returns a reference to the array element at specified location `idx`.
+2. Returns a reference to the object element with specified key `key`. The non-const qualified overload takes the key by
+   value.
+3. See 2. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
+   `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+4. Returns a reference to the element with specified JSON pointer `ptr`.
+
+## Template parameters
+
+`KeyType`
+:   A type for an object key other than [`json_pointer`](../json_pointer/index.md) that is comparable with
+    [`string_t`](string_t.md) using  [`object_comparator_t`](object_comparator_t.md).
+    This can also be a string view (C++17).
+
+## Iterator invalidation
+
+For the non-const versions 1. and 4., when passing an **array** index that does not exist, it is created and filled with
+a `#!json null` value before a reference to it is returned. For this, a reallocation can happen, in which case all
+iterators (including the [`end()`](end.md) iterator) and all references to the elements are invalidated.
+
+For [`ordered_json`](../ordered_json.md), also passing an **object key** to the non-const versions 2., 3., and 4., a
+reallocation can happen which again invalidates all iterators and all references.
+
+## Parameters
+
+`idx` (in)
+:   index of the element to access
+
+`key` (in)
+:   object key of the element to access
+    
+`ptr` (in)
+:   JSON pointer to the desired element
+    
+## Return value
+
+1. (const) reference to the element at index `idx`
+2. (const) reference to the element at key `key`
+3. (const) reference to the element at key `key`
+4. (const) reference to the element pointed to by `ptr`
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+1. The function can throw the following exceptions:
+    - Throws [`type_error.305`](../../home/exceptions.md#jsonexceptiontype_error305) if the JSON value is not an array
+      or null; in that case, using the `[]` operator with an index makes no sense.
+2. The function can throw the following exceptions:
+    - Throws [`type_error.305`](../../home/exceptions.md#jsonexceptiontype_error305) if the JSON value is not an object
+      or null; in that case, using the `[]` operator with a key makes no sense.
+3. See 2.
+4. The function can throw the following exceptions:
+    - Throws [`parse_error.106`](../../home/exceptions.md#jsonexceptionparse_error106) if an array index in the passed
+      JSON pointer `ptr` begins with '0'.
+    - Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if an array index in the passed
+      JSON pointer `ptr` is not a number.
+    - Throws [`out_of_range.402`](../../home/exceptions.md#jsonexceptionout_of_range402) if the array index '-' is used
+      in the passed JSON pointer `ptr` for the const version.
+    - Throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if the JSON pointer `ptr` can
+      not be resolved.
+
+## Complexity
+
+1. Constant if `idx` is in the range of the array. Otherwise, linear in `idx - size()`.
+2. Logarithmic in the size of the container.
+3. Logarithmic in the size of the container.
+4. Logarithmic in the size of the container.
+
+## Notes
+
+!!! danger "Undefined behavior and runtime assertions"
+
+    1. If the element with key `idx` does not exist, the behavior is undefined.
+    2. If the element with key `key` does not exist, the behavior is undefined and is **guarded by a
+       [runtime assertion](../../features/assertions.md)**!
+
+1. The non-const version may add values: If `idx` is beyond the range of the array (i.e., `idx >= size()`), then the
+   array is silently filled up with `#!json null` values to make `idx` a valid reference to the last stored element. In
+   case the value was `#!json null` before, it is converted to an array.
+
+2. If `key` is not found in the object, then it is silently added to the object and filled with a `#!json null` value to
+   make `key` a valid reference. In case the value was `#!json null` before, it is converted to an object.
+
+3. See 2.
+
+4. `null` values are created in arrays and objects if necessary.
+   
+    In particular:
+
+    - If the JSON pointer points to an object key that does not exist, it is created and filled with a `#!json null`
+      value before a reference to it is returned.
+    - If the JSON pointer points to an array index that does not exist, it is created and filled with a `#!json null`
+      value before a reference to it is returned. All indices between the current maximum and the given index are also
+      filled with `#!json null`.
+    - The special value `-` is treated as a synonym for the index past the end.
+
+## Examples
+
+??? example "Example: (1) access specified array element"
+
+    The example below shows how array elements can be read and written using `[]` operator. Note the addition of
+    `#!json null` values.
+        
+    ```cpp
+    --8<-- "examples/operator_array__size_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_array__size_type.output"
+    ```
+
+??? example "Example: (1) access specified array element (const)"
+
+    The example below shows how array elements can be read using the `[]` operator.
+
+    ```cpp
+    --8<-- "examples/operator_array__size_type_const.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_array__size_type_const.output"
+    ```
+
+??? example "Example: (2) access specified object element"
+
+    The example below shows how object elements can be read and written using the `[]` operator.
+    
+    ```cpp
+    --8<-- "examples/operator_array__object_t_key_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_array__object_t_key_type.output"
+    ```
+
+??? example "Example: (2) access specified object element (const)"
+
+    The example below shows how object elements can be read using the `[]` operator.
+    
+    ```cpp
+    --8<-- "examples/operator_array__object_t_key_type_const.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_array__object_t_key_type_const.output"
+    ```
+
+??? example "Example: (3) access specified object element using string_view"
+
+    The example below shows how object elements can be read using the `[]` operator.
+    
+    ```cpp
+    --8<-- "examples/operator_array__keytype.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_array__keytype.c++17.output"
+    ```
+
+??? example "Example: (3) access specified object element using string_view (const)"
+
+    The example below shows how object elements can be read using the `[]` operator.
+    
+    ```cpp
+    --8<-- "examples/operator_array__keytype_const.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_array__keytype_const.c++17.output"
+    ```
+
+??? example "Example: (4) access specified element via JSON Pointer"
+
+    The example below shows how values can be read and written using JSON Pointers.
+    
+    ```cpp
+    --8<-- "examples/operator_array__json_pointer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_array__json_pointer.output"
+    ```
+
+??? example "Example: (4) access specified element via JSON Pointer (const)"
+
+    The example below shows how values can be read using JSON Pointers.
+    
+    ```cpp
+    --8<-- "examples/operator_array__json_pointer_const.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_array__json_pointer_const.output"
+    ```
+
+## See also
+
+- documentation on [unchecked access](../../features/element_access/unchecked_access.md)
+- documentation on [runtime assertions](../../features/assertions.md)
+- see [`at`](at.md) for access by reference with range checking
+- see [`value`](value.md) for access with default value
+
+## Version history
+
+1. Added in version 1.0.0.
+2. Added in version 1.0.0. Added overloads for `T* key` in version 1.1.0. Removed overloads for `T* key` (replaced by 3)
+   in version 3.11.0.
+3. Added in version 3.11.0.
+4. Added in version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ValueType.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ValueType.md
new file mode 100644
index 00000000..bf38a3d2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ValueType.md
@@ -0,0 +1,82 @@
+# <small>nlohmann::basic_json::</small>operator ValueType
+
+```cpp
+template<typename ValueType>
+JSON_EXPLICIT operator ValueType() const;
+```
+
+Implicit type conversion between the JSON value and a compatible value. The call is realized by calling
+[`get()`](get.md). See [Notes](#notes) for the meaning of `JSON_EXPLICIT`.
+
+## Template parameters
+
+`ValueType`
+:   the value type to return
+
+## Return value
+
+copy of the JSON value, converted to `ValueType`
+
+## Exceptions
+
+Depends on what `json_serializer<ValueType>` `from_json()` method throws
+
+## Complexity
+
+Linear in the size of the JSON value.
+
+## Notes
+
+!!! note "Definition of `JSON_EXPLICIT`"
+
+    By default `JSON_EXPLICIT` is defined to the empty string, so the signature is:
+    
+    ```cpp
+    template<typename ValueType>
+    operator ValueType() const;
+    ```
+    
+    If [`JSON_USE_IMPLICIT_CONVERSIONS`](../macros/json_use_implicit_conversions.md) is set to `0`,
+    `JSON_EXPLICIT` is defined to `#!cpp explicit`:
+
+    ```cpp
+    template<typename ValueType>
+    explicit operator ValueType() const;
+    ```
+    
+    That is, implicit conversions can be switched off by defining
+    [`JSON_USE_IMPLICIT_CONVERSIONS`](../macros/json_use_implicit_conversions.md) to `0`.
+
+!!! info "Future behavior change"
+
+    Implicit conversions will be switched off by default in the next major release of the library. That is,
+    `JSON_EXPLICIT` will be set to `#!cpp explicit` by default.
+
+    You can prepare existing code by already defining
+    [`JSON_USE_IMPLICIT_CONVERSIONS`](../macros/json_use_implicit_conversions.md) to `0` and replace any implicit
+    conversions with calls to [`get`](../basic_json/get.md).
+
+## Examples
+
+??? example
+
+    The example below shows several conversions from JSON values to other types. There are a few things to note: (1)
+    Floating-point numbers can be converted to integers, (2) A JSON array can be converted to a standard
+    `std::vector<short>`, (3) A JSON object can be converted to C++ associative containers such as
+    `std::unordered_map<std::string, json>`.
+        
+    ```cpp
+    --8<-- "examples/operator__ValueType.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__ValueType.output"
+    ```
+
+## Version history
+
+- Since version 1.0.0.
+- Macros `JSON_EXPLICIT`/[`JSON_USE_IMPLICIT_CONVERSIONS`](../macros/json_use_implicit_conversions.md) added
+  in version 3.9.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_eq.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_eq.md
new file mode 100644
index 00000000..a2ce6155
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_eq.md
@@ -0,0 +1,168 @@
+# <small>nlohmann::basic_json::</small>operator==
+
+```cpp
+// until C++20
+bool operator==(const_reference lhs, const_reference rhs) noexcept;   // (1)
+
+template<typename ScalarType>
+bool operator==(const_reference lhs, const ScalarType rhs) noexcept;  // (2)
+
+template<typename ScalarType>
+bool operator==(ScalarType lhs, const const_reference rhs) noexcept;  // (2)
+
+// since C++20
+class basic_json {
+    bool operator==(const_reference rhs) const noexcept;              // (1)
+
+    template<typename ScalarType>
+    bool operator==(ScalarType rhs) const noexcept;                   // (2)
+};
+```
+
+1. Compares two JSON values for equality according to the following rules:
+    - Two JSON values are equal if (1) neither value is discarded, or (2) they are of the same type and their stored
+      values are the same according to their respective `operator==`.
+    - Integer and floating-point numbers are automatically converted before comparison.
+
+2. Compares a JSON value and a scalar or a scalar and a JSON value for equality by converting the
+   scalar to a JSON value and comparing both JSON values according to 1.
+
+## Template parameters
+
+`ScalarType`
+:   a scalar type according to `std::is_scalar<ScalarType>::value`
+
+## Parameters
+
+`lhs` (in)
+:   first value to consider 
+
+`rhs` (in)
+:   second value to consider 
+
+## Return value
+
+whether the values `lhs`/`*this` and `rhs` are equal
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Linear.
+
+## Notes
+
+!!! note "Comparing special values"
+
+    - `NaN` values are unordered within the domain of numbers.
+      The following comparisons all yield `#!cpp false`:
+        1. Comparing a `NaN` with itself.
+        2. Comparing a `NaN` with another `NaN`.
+        3. Comparing a `NaN` and any other number.
+    - JSON `#!cpp null` values are all equal.
+    - Discarded values never compare equal to themselves.
+
+!!! note "Comparing floating-point numbers"
+
+    Floating-point numbers inside JSON values numbers are compared with `json::number_float_t::operator==` which is
+    `double::operator==` by default. To compare floating-point while respecting an epsilon, an alternative
+    [comparison function](https://github.com/mariokonrad/marnav/blob/master/include/marnav/math/floatingpoint.hpp#L34-#L39)
+    could be used, for instance
+    
+    ```cpp
+    template<typename T, typename = typename std::enable_if<std::is_floating_point<T>::value, T>::type>
+    inline bool is_same(T a, T b, T epsilon = std::numeric_limits<T>::epsilon()) noexcept
+    {
+        return std::abs(a - b) <= epsilon;
+    }
+    ```
+    
+    Or you can self-defined operator equal function like this:
+    
+    ```cpp
+    bool my_equal(const_reference lhs, const_reference rhs)
+    {
+        const auto lhs_type lhs.type();
+        const auto rhs_type rhs.type();
+        if (lhs_type == rhs_type)
+        {
+            switch(lhs_type)
+                // self_defined case
+                case value_t::number_float:
+                    return std::abs(lhs - rhs) <= std::numeric_limits<float>::epsilon();
+                // other cases remain the same with the original
+                ...
+        }
+    ...
+    }
+    ```
+
+!!! note "Comparing different `basic_json` specializations"
+
+    Comparing different `basic_json` specializations can have surprising effects. For instance, the result of comparing
+    the JSON objects
+
+    ```json
+    {
+       "version": 1,
+       "type": "integer"
+    }
+    ```
+
+    and
+
+    ```json
+    {
+       "type": "integer",
+       "version": 1
+    }
+    ```
+
+    depends on whether [`nlohmann::json`](../json.md) or [`nlohmann::ordered_json`](../ordered_json.md) is used:
+
+     ```cpp
+     --8<-- "examples/operator__equal__specializations.cpp"
+     ```
+     
+     Output:
+     
+     ```json
+     --8<-- "examples/operator__equal__specializations.output"
+     ```
+
+## Examples
+
+??? example
+
+    The example demonstrates comparing several JSON types.
+        
+    ```cpp
+    --8<-- "examples/operator__equal.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__equal.output"
+    ```
+
+??? example
+
+    The example demonstrates comparing several JSON types against the null pointer (JSON `#!json null`).
+        
+    ```cpp
+    --8<-- "examples/operator__equal__nullptr_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__equal__nullptr_t.output"
+    ```
+
+## Version history
+
+1. Added in version 1.0.0. Added C++20 member functions in version 3.11.0.
+2. Added in version 1.0.0. Added C++20 member functions in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ge.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ge.md
new file mode 100644
index 00000000..d4e2fb4a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ge.md
@@ -0,0 +1,86 @@
+# <small>nlohmann::basic_json::</small>operator>=
+
+```cpp
+// until C++20
+bool operator>=(const_reference lhs, const_reference rhs) noexcept;   // (1)
+
+template<typename ScalarType>
+bool operator>=(const_reference lhs, const ScalarType rhs) noexcept;  // (2)
+
+template<typename ScalarType>
+bool operator>=(ScalarType lhs, const const_reference rhs) noexcept;  // (2)
+```
+
+1. Compares whether one JSON value `lhs` is greater than or equal to another JSON value `rhs` according to the following
+   rules:
+    - The comparison always yields `#!cpp false` if (1) either operand is discarded, or (2) either operand is `NaN` and
+      the other operand is either `NaN` or any other number.
+    - Otherwise, returns the result of `#!cpp !(lhs < rhs)` (see [**operator<**](operator_lt.md)).
+
+2. Compares whether a JSON value is greater than or equal to a scalar or a scalar is greater than or equal to a JSON
+   value by converting the scalar to a JSON value and comparing both JSON values according to 1.
+
+## Template parameters
+
+`ScalarType`
+:   a scalar type according to `std::is_scalar<ScalarType>::value`
+
+## Parameters
+
+`lhs` (in)
+:   first value to consider 
+
+`rhs` (in)
+:   second value to consider 
+
+## Return value
+
+whether `lhs` is less than or equal to `rhs`
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Linear.
+
+## Notes
+
+!!! note "Comparing `NaN`"
+
+    `NaN` values are unordered within the domain of numbers.
+    The following comparisons all yield `#!cpp false`:
+      1. Comparing a `NaN` with itself.
+      2. Comparing a `NaN` with another `NaN`.
+      3. Comparing a `NaN` and any other number.
+
+!!! note "Operator overload resolution"
+
+    Since C++20 overload resolution will consider the _rewritten candidate_ generated from
+    [`operator<=>`](operator_spaceship.md).
+
+## Examples
+
+??? example
+
+    The example demonstrates comparing several JSON types.
+        
+    ```cpp
+    --8<-- "examples/operator__greaterequal.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__greaterequal.output"
+    ```
+
+## See also
+
+- [**operator<=>**](operator_spaceship.md) comparison: 3-way
+
+## Version history
+
+1. Added in version 1.0.0. Conditionally removed since C++20 in version 3.11.0.
+2. Added in version 1.0.0. Conditionally removed since C++20 in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_gt.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_gt.md
new file mode 100644
index 00000000..486da5fd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_gt.md
@@ -0,0 +1,86 @@
+# <small>nlohmann::basic_json::</small>operator>
+
+```cpp
+// until C++20
+bool operator>(const_reference lhs, const_reference rhs) noexcept;   // (1)
+
+template<typename ScalarType>
+bool operator>(const_reference lhs, const ScalarType rhs) noexcept;  // (2)
+
+template<typename ScalarType>
+bool operator>(ScalarType lhs, const const_reference rhs) noexcept;  // (2)
+```
+
+1. Compares whether one JSON value `lhs` is greater than another JSON value `rhs` according to the
+  following rules:
+    - The comparison always yields `#!cpp false` if (1) either operand is discarded, or (2) either
+      operand is `NaN` and the other operand is either `NaN` or any other number.
+    - Otherwise, returns the result of `#!cpp !(lhs <= rhs)` (see [**operator<=**](operator_le.md)).
+
+2. Compares whether a JSON value is greater than a scalar or a scalar is greater than a JSON value by
+   converting the scalar to a JSON value and comparing both JSON values according to 1.
+
+## Template parameters
+
+`ScalarType`
+:   a scalar type according to `std::is_scalar<ScalarType>::value`
+
+## Parameters
+
+`lhs` (in)
+:   first value to consider 
+
+`rhs` (in)
+:   second value to consider 
+
+## Return value
+
+whether `lhs` is greater than `rhs`
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Linear.
+
+## Notes
+
+!!! note "Comparing `NaN`"
+
+    `NaN` values are unordered within the domain of numbers.
+    The following comparisons all yield `#!cpp false`:
+      1. Comparing a `NaN` with itself.
+      2. Comparing a `NaN` with another `NaN`.
+      3. Comparing a `NaN` and any other number.
+
+!!! note "Operator overload resolution"
+
+    Since C++20 overload resolution will consider the _rewritten candidate_ generated from
+    [`operator<=>`](operator_spaceship.md).
+
+## Examples
+
+??? example
+
+    The example demonstrates comparing several JSON types.
+        
+    ```cpp
+    --8<-- "examples/operator__greater.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__greater.output"
+    ```
+
+## See also
+
+- [**operator<=>**](operator_spaceship.md) comparison: 3-way
+
+## Version history
+
+1. Added in version 1.0.0. Conditionally removed since C++20 in version 3.11.0.
+2. Added in version 1.0.0. Conditionally removed since C++20 in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_le.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_le.md
new file mode 100644
index 00000000..c6144bb4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_le.md
@@ -0,0 +1,87 @@
+# <small>nlohmann::basic_json::</small>operator<=
+
+```cpp
+// until C++20
+bool operator<=(const_reference lhs, const_reference rhs) noexcept;   // (1)
+
+template<typename ScalarType>
+bool operator<=(const_reference lhs, const ScalarType rhs) noexcept;  // (2)
+
+template<typename ScalarType>
+bool operator<=(ScalarType lhs, const const_reference rhs) noexcept;  // (2)
+```
+
+1. Compares whether one JSON value `lhs` is less than or equal to another JSON value `rhs`
+   according to the following rules:
+    - The comparison always yields `#!cpp false` if (1) either operand is discarded, or (2) either
+      operand is `NaN` and the other operand is either `NaN` or any other number.
+    - Otherwise, returns the result of `#!cpp !(rhs < lhs)` (see [**operator<**](operator_lt.md)).
+
+1. Compares whether a JSON value is less than or equal to a scalar or a scalar is less than or equal
+   to a JSON value by converting the scalar to a JSON value and comparing both JSON values according
+   to 1.
+
+## Template parameters
+
+`ScalarType`
+:   a scalar type according to `std::is_scalar<ScalarType>::value`
+
+## Parameters
+
+`lhs` (in)
+:   first value to consider 
+
+`rhs` (in)
+:   second value to consider 
+
+## Return value
+
+whether `lhs` is less than or equal to `rhs`
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Linear.
+
+## Notes
+
+!!! note "Comparing `NaN`"
+
+    `NaN` values are unordered within the domain of numbers.
+    The following comparisons all yield `#!cpp false`:
+      1. Comparing a `NaN` with itself.
+      2. Comparing a `NaN` with another `NaN`.
+      3. Comparing a `NaN` and any other number.
+
+!!! note "Operator overload resolution"
+
+    Since C++20 overload resolution will consider the _rewritten candidate_ generated from
+    [`operator<=>`](operator_spaceship.md).
+
+## Examples
+
+??? example
+
+    The example demonstrates comparing several JSON types.
+        
+    ```cpp
+    --8<-- "examples/operator__lessequal.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__lessequal.output"
+    ```
+
+## See also
+
+- [**operator<=>**](operator_spaceship.md) comparison: 3-way
+
+## Version history
+
+1. Added in version 1.0.0. Conditionally removed since C++20 in version 3.11.0.
+2. Added in version 1.0.0. Conditionally removed since C++20 in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_lt.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_lt.md
new file mode 100644
index 00000000..118d817c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_lt.md
@@ -0,0 +1,96 @@
+# <small>nlohmann::basic_json::</small>operator<
+
+```cpp
+// until C++20
+bool operator<(const_reference lhs, const_reference rhs) noexcept;   // (1)
+
+template<typename ScalarType>
+bool operator<(const_reference lhs, const ScalarType rhs) noexcept;  // (2)
+
+template<typename ScalarType>
+bool operator<(ScalarType lhs, const const_reference rhs) noexcept;  // (2)
+```
+
+1. Compares whether one JSON value `lhs` is less than another JSON value `rhs` according to the
+  following rules:
+    - If either operand is discarded, the comparison yields `#!cpp false`.
+    - If both operands have the same type, the values are compared using their respective `operator<`.
+    - Integer and floating-point numbers are automatically converted before comparison.
+    - In case `lhs` and `rhs` have different types, the values are ignored and the order of the types
+      is considered, which is:
+        1. null
+        2. boolean
+        3. number (all types)
+        4. object
+        5. array
+        6. string
+        7. binary
+      For instance, any boolean value is considered less than any string.
+
+2. Compares whether a JSON value is less than a scalar or a scalar is less than a JSON value by converting
+   the scalar to a JSON value and comparing both JSON values according to 1.
+
+## Template parameters
+
+`ScalarType`
+:   a scalar type according to `std::is_scalar<ScalarType>::value`
+
+## Parameters
+
+`lhs` (in)
+:   first value to consider 
+
+`rhs` (in)
+:   second value to consider 
+
+## Return value
+
+whether `lhs` is less than `rhs`
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Linear.
+
+## Notes
+
+!!! note "Comparing `NaN`"
+
+    `NaN` values are unordered within the domain of numbers.
+    The following comparisons all yield `#!cpp false`:
+      1. Comparing a `NaN` with itself.
+      2. Comparing a `NaN` with another `NaN`.
+      3. Comparing a `NaN` and any other number.
+
+!!! note "Operator overload resolution"
+
+    Since C++20 overload resolution will consider the _rewritten candidate_ generated from
+    [`operator<=>`](operator_spaceship.md).
+
+## Examples
+
+??? example
+
+    The example demonstrates comparing several JSON types.
+        
+    ```cpp
+    --8<-- "examples/operator__less.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__less.output"
+    ```
+
+## See also
+
+- [**operator<=>**](operator_spaceship.md) comparison: 3-way
+
+## Version history
+
+1. Added in version 1.0.0. Conditionally removed since C++20 in version 3.11.0.
+2. Added in version 1.0.0. Conditionally removed since C++20 in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ne.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ne.md
new file mode 100644
index 00000000..982a0676
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_ne.md
@@ -0,0 +1,98 @@
+# <small>nlohmann::basic_json::</small>operator!=
+
+```cpp
+// until C++20
+bool operator!=(const_reference lhs, const_reference rhs) noexcept;   // (1)
+
+template<typename ScalarType>
+bool operator!=(const_reference lhs, const ScalarType rhs) noexcept;  // (2)
+
+template<typename ScalarType>
+bool operator!=(ScalarType lhs, const const_reference rhs) noexcept;  // (2)
+
+// since C++20
+class basic_json {
+    bool operator!=(const_reference rhs) const noexcept;              // (1)
+
+    template<typename ScalarType>
+    bool operator!=(ScalarType rhs) const noexcept;                   // (2)
+};
+```
+
+1. Compares two JSON values for inequality according to the following rules:
+    - The comparison always yields `#!cpp false` if (1) either operand is discarded, or (2) either operand is `NaN` and
+      the other operand is either `NaN` or any other number.
+    - Otherwise, returns the result of `#!cpp !(lhs == rhs)` (until C++20) or `#!cpp !(*this == rhs)` (since C++20).
+
+2. Compares a JSON value and a scalar or a scalar and a JSON value for inequality by converting the scalar to a JSON
+   value and comparing both JSON values according to 1.
+
+## Template parameters
+
+`ScalarType`
+:   a scalar type according to `std::is_scalar<ScalarType>::value`
+
+## Parameters
+
+`lhs` (in)
+:   first value to consider 
+
+`rhs` (in)
+:   second value to consider 
+
+## Return value
+
+whether the values `lhs`/`*this` and `rhs` are not equal
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Linear.
+
+## Notes
+
+!!! note "Comparing `NaN`"
+
+    `NaN` values are unordered within the domain of numbers.
+    The following comparisons all yield `#!cpp false`:
+      1. Comparing a `NaN` with itself.
+      2. Comparing a `NaN` with another `NaN`.
+      3. Comparing a `NaN` and any other number.
+
+## Examples
+
+??? example
+
+    The example demonstrates comparing several JSON types.
+        
+    ```cpp
+    --8<-- "examples/operator__notequal.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__notequal.output"
+    ```
+
+??? example
+
+    The example demonstrates comparing several JSON types against the null pointer (JSON `#!json null`).
+        
+    ```cpp
+    --8<-- "examples/operator__notequal__nullptr_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__notequal__nullptr_t.output"
+    ```
+
+## Version history
+
+1. Added in version 1.0.0. Added C++20 member functions in version 3.11.0.
+2. Added in version 1.0.0. Added C++20 member functions in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_spaceship.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_spaceship.md
new file mode 100644
index 00000000..9e91d0d2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_spaceship.md
@@ -0,0 +1,100 @@
+# <small>nlohmann::basic_json::</small>operator<=>
+
+```cpp
+// since C++20
+class basic_json {
+    std::partial_ordering operator<=>(const_reference rhs) const noexcept;  // (1)
+
+    template<typename ScalarType>
+    std::partial_ordering operator<=>(const ScalarType rhs) const noexcept; // (2)
+};
+```
+
+1. 3-way compares two JSON values producing a result of type `std::partial_ordering` according to the following rules:
+    - Two JSON values compare with a result of `std::partial_ordering::unordered` if either value is discarded.
+    - If both JSON values are of the same type, the result is produced by 3-way comparing their stored values using
+      their respective `operator<=>`.
+    - Integer and floating-point numbers are converted to their common type and then 3-way compared using their
+      respective `operator<=>`.
+      For instance, comparing an integer and a floating-point value will 3-way compare the first value converted to
+      floating-point with the second value.
+    - Otherwise, yields a result by comparing the type (see [`value_t`](value_t.md)).
+  
+2. 3-way compares a JSON value and a scalar or a scalar and a JSON value by converting the scalar to a JSON value and
+   3-way comparing both JSON values (see 1).
+
+## Template parameters
+
+`ScalarType`
+:   a scalar type according to `std::is_scalar<ScalarType>::value`
+
+## Parameters
+
+`rhs` (in)
+:   second value to consider 
+
+## Return value
+
+the `std::partial_ordering` of the 3-way comparison of `*this` and `rhs`
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Linear.
+
+## Notes
+
+!!! note "Comparing `NaN`"
+
+    - `NaN` values are unordered within the domain of numbers.
+      The following comparisons all yield `std::partial_ordering::unordered`:
+        1. Comparing a `NaN` with itself.
+        2. Comparing a `NaN` with another `NaN`.
+        3. Comparing a `NaN` and any other number.
+
+## Examples
+
+??? example "Example: (1) comparing JSON values"
+
+    The example demonstrates comparing several JSON values.
+    
+    ```cpp
+    --8<-- "examples/operator_spaceship__const_reference.c++20.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_spaceship__const_reference.c++20.output"
+    ```
+
+??? example "Example: (2) comparing JSON values and scalars"
+
+    The example demonstrates comparing several JSON values and scalars.
+    
+    ```cpp
+    --8<-- "examples/operator_spaceship__scalartype.c++20.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_spaceship__scalartype.c++20.output"
+    ```
+
+## See also
+
+- [**operator==**](operator_eq.md) - comparison: equal
+- [**operator!=**](operator_ne.md) - comparison: not equal
+- [**operator<**](operator_lt.md) - comparison: less than
+- [**operator<=**](operator_le.md) - comparison: less than or equal
+- [**operator>**](operator_gt.md) - comparison: greater than
+- [**operator>=**](operator_ge.md) - comparison: greater than or equal
+
+## Version history
+
+1. Added in version 3.11.0.
+2. Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_value_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_value_t.md
new file mode 100644
index 00000000..0f08f42b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/operator_value_t.md
@@ -0,0 +1,54 @@
+# <small>nlohmann::basic_json::</small>operator value_t
+
+```cpp
+constexpr operator value_t() const noexcept;
+```
+
+Return the type of the JSON value as a value from the [`value_t`](value_t.md) enumeration.
+    
+## Return value
+
+the type of the JSON value
+
+| Value type                | return value               |
+|---------------------------|----------------------------|
+| `#!json null`             | `value_t::null`            |
+| boolean                   | `value_t::boolean`         |
+| string                    | `value_t::string`          |
+| number (integer)          | `value_t::number_integer`  |
+| number (unsigned integer) | `value_t::number_unsigned` |
+| number (floating-point)   | `value_t::number_float`    |
+| object                    | `value_t::object`          |
+| array                     | `value_t::array`           |
+| binary                    | `value_t::binary`          |
+| discarded                 | `value_t::discarded`       |
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `operator value_t()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/operator__value_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator__value_t.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Added unsigned integer type in version 2.0.0.
+- Added binary type in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/other_error.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/other_error.md
new file mode 100644
index 00000000..251c0f3d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/other_error.md
@@ -0,0 +1,77 @@
+# <small>nlohmann::basic_json::</small>other_error
+
+```cpp
+class other_error : public exception;
+```
+
+This exception is thrown in case of errors that cannot be classified with the other exception types.
+
+Exceptions have ids 5xx (see [list of other errors](../../home/exceptions.md#further-exceptions)).
+
+```mermaid
+classDiagram
+  direction LR
+  
+    class std_exception ["std::exception"] {
+        <<interface>>
+    }
+
+    class json_exception ["basic_json::exception"] {
+        +const int id
+        +const char* what() const
+    }
+    
+    class json_parse_error ["basic_json::parse_error"] {
+        +const std::size_t byte
+    }
+
+    class json_invalid_iterator ["basic_json::invalid_iterator"]
+    class json_type_error ["basic_json::type_error"]
+    class json_out_of_range ["basic_json::out_of_range"]
+    class json_other_error ["basic_json::other_error"]
+
+    std_exception <|-- json_exception
+    json_exception <|-- json_parse_error
+    json_exception <|-- json_invalid_iterator
+    json_exception <|-- json_type_error
+    json_exception <|-- json_out_of_range
+    json_exception <|-- json_other_error
+
+    style json_other_error fill:#CCCCFF
+```
+
+## Member functions
+
+- **what** - returns explanatory string
+
+## Member variables
+
+- **id** - the id of the exception
+
+## Examples
+
+??? example
+
+    The following code shows how a `other_error` exception can be caught.
+    
+    ```cpp
+    --8<-- "examples/other_error.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/other_error.output"
+    ```
+
+## See also
+
+- [List of other errors](../../home/exceptions.md#further-exceptions)
+- [`parse_error`](parse_error.md) for exceptions indicating a parse error
+- [`invalid_iterator`](invalid_iterator.md) for exceptions indicating errors with iterators
+- [`type_error`](type_error.md) for exceptions indicating executing a member function with a wrong type
+- [`out_of_range`](out_of_range.md) for exceptions indicating access out of the defined range
+
+## Version history
+
+- Since version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/out_of_range.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/out_of_range.md
new file mode 100644
index 00000000..0c216411
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/out_of_range.md
@@ -0,0 +1,78 @@
+# <small>nlohmann::basic_json::</small>out_of_range
+
+```cpp
+class out_of_range : public exception;
+```
+
+This exception is thrown in case a library function is called on an input parameter that exceeds the expected range, for
+instance in case of array indices or nonexisting object keys.
+
+Exceptions have ids 4xx (see [list of out-of-range errors](../../home/exceptions.md#out-of-range)).
+
+```mermaid
+classDiagram
+  direction LR
+  
+    class std_exception ["std::exception"] {
+        <<interface>>
+    }
+
+    class json_exception ["basic_json::exception"] {
+        +const int id
+        +const char* what() const
+    }
+    
+    class json_parse_error ["basic_json::parse_error"] {
+        +const std::size_t byte
+    }
+
+    class json_invalid_iterator ["basic_json::invalid_iterator"]
+    class json_type_error ["basic_json::type_error"]
+    class json_out_of_range ["basic_json::out_of_range"]
+    class json_other_error ["basic_json::other_error"]
+
+    std_exception <|-- json_exception
+    json_exception <|-- json_parse_error
+    json_exception <|-- json_invalid_iterator
+    json_exception <|-- json_type_error
+    json_exception <|-- json_out_of_range
+    json_exception <|-- json_other_error
+
+    style json_out_of_range fill:#CCCCFF
+```
+
+## Member functions
+
+- **what** - returns explanatory string
+
+## Member variables
+
+- **id** - the id of the exception
+
+## Examples
+
+??? example
+
+    The following code shows how a `out_of_range` exception can be caught.
+    
+    ```cpp
+    --8<-- "examples/out_of_range.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/out_of_range.output"
+    ```
+
+## See also
+
+- [List of out-of-range errors](../../home/exceptions.md#out-of-range)
+- [`parse_error`](parse_error.md) for exceptions indicating a parse error
+- [`invalid_iterator`](invalid_iterator.md) for exceptions indicating errors with iterators
+- [`type_error`](type_error.md) for exceptions indicating executing a member function with a wrong type
+- [`other_error`](other_error.md) for exceptions indicating other library errors
+
+## Version history
+
+- Since version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse.md
new file mode 100644
index 00000000..69d412f9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse.md
@@ -0,0 +1,211 @@
+# <small>nlohmann::basic_json::</small>parse
+
+```cpp
+// (1)
+template<typename InputType>
+static basic_json parse(InputType&& i,
+                        const parser_callback_t cb = nullptr,
+                        const bool allow_exceptions = true,
+                        const bool ignore_comments = false);
+
+// (2)
+template<typename IteratorType>
+static basic_json parse(IteratorType first, IteratorType last,
+                        const parser_callback_t cb = nullptr,
+                        const bool allow_exceptions = true,
+                        const bool ignore_comments = false);
+```
+
+1. Deserialize from a compatible input.
+2. Deserialize from a pair of character iterators
+    
+    The `value_type` of the iterator must be an integral type with size of 1, 2 or 4 bytes, which will be interpreted
+    respectively as UTF-8, UTF-16 and UTF-32.
+
+## Template parameters
+
+`InputType`
+:   A compatible input, for instance:
+    
+    - an `std::istream` object
+    - a `FILE` pointer (throws if null)
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters (throws if null)
+    - a `std::string`
+    - an object `obj` for which `begin(obj)` and `end(obj)` produces a valid pair of iterators.
+
+`IteratorType`
+:   a compatible iterator type, for instance.
+
+    - a pair of `std::string::iterator` or `std::vector<std::uint8_t>::iterator`
+    - a pair of pointers such as `ptr` and `ptr + len`
+
+## Parameters
+
+`i` (in)
+:   Input to parse from.
+
+`cb` (in)
+:   a parser callback function of type [`parser_callback_t`](parser_callback_t.md) which is used to control the
+    deserialization by filtering unwanted values (optional)
+
+`allow_exceptions` (in)
+:    whether to throw exceptions in case of a parse error (optional, `#!cpp true` by default)
+
+`ignore_comments` (in)
+:   whether comments should be ignored and treated like whitespace (`#!cpp true`) or yield a parse error
+    (`#!cpp false`); (optional, `#!cpp false` by default)
+
+`first` (in)
+:   iterator to start of character range
+
+`last` (in)
+:   iterator to end of character range
+
+## Return value
+
+Deserialized JSON value; in case of a parse error and `allow_exceptions` set to `#!cpp false`, the return value will be
+`value_t::discarded`. The latter can be checked with [`is_discarded`](is_discarded.md).
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+- Throws [`parse_error.101`](../../home/exceptions.md#jsonexceptionparse_error101) in case of an unexpected token, or
+  empty input like a null `FILE*` or `char*` pointer.
+- Throws [`parse_error.102`](../../home/exceptions.md#jsonexceptionparse_error102) if `to_unicode` fails or surrogate
+  error.
+- Throws [`parse_error.103`](../../home/exceptions.md#jsonexceptionparse_error103) if `to_unicode` fails.
+
+## Complexity
+
+Linear in the length of the input. The parser is a predictive LL(1) parser. The complexity can be higher if the parser
+callback function `cb` or reading from (1) the input `i` or (2) the iterator range [`first`, `last`] has a
+super-linear complexity.
+
+## Notes
+
+A UTF-8 byte order mark is silently ignored.
+
+## Examples
+
+??? example "Parsing from a character array"
+
+    The example below demonstrates the `parse()` function reading from an array.
+
+    ```cpp
+    --8<-- "examples/parse__array__parser_callback_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse__array__parser_callback_t.output"
+    ```
+
+??? example "Parsing from a string"
+
+    The example below demonstrates the `parse()` function with and without callback function.
+
+    ```cpp
+    --8<-- "examples/parse__string__parser_callback_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse__string__parser_callback_t.output"
+    ```
+
+??? example "Parsing from an input stream"
+
+    The example below demonstrates the `parse()` function with and without callback function.
+
+    ```cpp
+    --8<-- "examples/parse__istream__parser_callback_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse__istream__parser_callback_t.output"
+    ```
+
+??? example "Parsing from a contiguous container"
+
+    The example below demonstrates the `parse()` function reading from a contiguous container.
+
+    ```cpp
+    --8<-- "examples/parse__contiguouscontainer__parser_callback_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse__contiguouscontainer__parser_callback_t.output"
+    ```
+
+??? example "Parsing from a non null-terminated string"
+
+    The example below demonstrates the `parse()` function reading from a string that is not null-terminated.
+
+    ```cpp
+    --8<-- "examples/parse__pointers.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse__pointers.output"
+    ```
+
+??? example "Parsing from an iterator pair"
+
+    The example below demonstrates the `parse()` function reading from an iterator pair.
+
+    ```cpp
+    --8<-- "examples/parse__iterator_pair.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse__iterator_pair.output"
+    ```
+
+??? example "Effect of `allow_exceptions` parameter"
+
+    The example below demonstrates the effect of the `allow_exceptions` parameter in the ´parse()` function.
+
+    ```cpp
+    --8<-- "examples/parse__allow_exceptions.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse__allow_exceptions.output"
+    ```
+
+## See also
+
+- [accept](accept.md) - check if the input is valid JSON
+- [operator>>](../operator_gtgt.md) - deserialize from stream
+
+## Version history
+
+- Added in version 1.0.0.
+- Overload for contiguous containers (1) added in version 2.0.3.
+- Ignoring comments via `ignore_comments` added in version 3.9.0.
+- Changed [runtime assertion](../../features/assertions.md) in case of `FILE*` null pointers to exception in version 3.11.4.
+
+!!! warning "Deprecation"
+
+    Overload (2) replaces calls to `parse` with a pair of iterators as their first parameter which has been
+    deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+    `#!cpp parse({ptr, ptr+len}, ...);` with `#!cpp parse(ptr, ptr+len, ...);`.
+
+    You should be warned by your compiler with a `-Wdeprecated-declarations` warning if you are using a deprecated
+    function.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse_error.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse_error.md
new file mode 100644
index 00000000..87b54b4c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse_error.md
@@ -0,0 +1,86 @@
+# <small>nlohmann::basic_json::</small>parse_error
+
+```cpp
+class parse_error : public exception;
+```
+
+This exception is thrown by the library when a parse error occurs. Parse errors can occur during the deserialization of
+JSON text, BSON, CBOR, MessagePack, UBJSON, as well as when using JSON Patch.
+
+Member `byte` holds the byte index of the last read character in the input file (see note below).
+
+Exceptions have ids 1xx (see [list of parse errors](../../home/exceptions.md#parse-errors)).
+
+```mermaid
+classDiagram
+  direction LR
+  
+    class std_exception ["std::exception"] {
+        <<interface>>
+    }
+
+    class json_exception ["basic_json::exception"] {
+        +const int id
+        +const char* what() const
+    }
+    
+    class json_parse_error ["basic_json::parse_error"] {
+        +const std::size_t byte
+    }
+
+    class json_invalid_iterator ["basic_json::invalid_iterator"]
+    class json_type_error ["basic_json::type_error"]
+    class json_out_of_range ["basic_json::out_of_range"]
+    class json_other_error ["basic_json::other_error"]
+
+    std_exception <|-- json_exception
+    json_exception <|-- json_parse_error
+    json_exception <|-- json_invalid_iterator
+    json_exception <|-- json_type_error
+    json_exception <|-- json_out_of_range
+    json_exception <|-- json_other_error
+
+    style json_parse_error fill:#CCCCFF
+```
+
+## Member functions
+
+- **what** - returns explanatory string
+
+## Member variables
+
+- **id** - the id of the exception
+- **byte** - byte index of the parse error
+
+## Notes
+
+For an input with $n$ bytes, 1 is the index of the first character and $n+1$ is the index of the terminating null byte
+or the end of file. This also holds true when reading a byte vector for binary formats.
+
+## Examples
+
+??? example
+
+    The following code shows how a `parse_error` exception can be caught.
+    
+    ```cpp
+    --8<-- "examples/parse_error.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse_error.output"
+    ```
+
+## See also
+
+- [List of parse errors](../../home/exceptions.md#parse-errors)
+- [`invalid_iterator`](invalid_iterator.md) for exceptions indicating errors with iterators
+- [`type_error`](type_error.md) for exceptions indicating executing a member function with a wrong type
+- [`out_of_range`](out_of_range.md) for exceptions indicating access out of the defined range
+- [`other_error`](other_error.md) for exceptions indicating other library errors
+
+## Version history
+
+- Since version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse_event_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse_event_t.md
new file mode 100644
index 00000000..1a7c3903
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parse_event_t.md
@@ -0,0 +1,29 @@
+# <small>nlohmann::basic_json::</small>parse_event_t
+
+```cpp
+enum class parse_event_t : std::uint8_t {
+    object_start,
+    object_end,
+    array_start,
+    array_end,
+    key,
+    value
+};
+```
+
+The parser callback distinguishes the following events:
+
+- `object_start`: the parser read `{` and started to process a JSON object
+- `key`: the parser read a key of a value in an object
+- `object_end`: the parser read `}` and finished processing a JSON object
+- `array_start`: the parser read `[` and started to process a JSON array
+- `array_end`: the parser read `]` and finished processing a JSON array
+- `value`: the parser finished reading a JSON value
+
+## Examples
+
+![Example when certain parse events are triggered](../../images/callback_events.png)
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parser_callback_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parser_callback_t.md
new file mode 100644
index 00000000..e10402ea
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/parser_callback_t.md
@@ -0,0 +1,73 @@
+# <small>nlohmann::basic_json::</small>parser_callback_t
+
+```cpp
+template<typename BasicJsonType>
+using parser_callback_t =
+    std::function<bool(int depth, parse_event_t event, BasicJsonType& parsed)>;
+```
+
+With a parser callback function, the result of parsing a JSON text can be influenced. When passed to
+[`parse`](parse.md), it is called on certain events (passed as [`parse_event_t`](parse_event_t.md) via parameter
+`event`) with a set recursion depth `depth` and context JSON value `parsed`. The return value of the callback function
+is a boolean indicating whether the element that emitted the callback shall be kept or not.
+
+We distinguish six scenarios (determined by the event type) in which the callback function can be called. The following
+table describes the values of the parameters `depth`, `event`, and `parsed`.
+
+| parameter `event`             | description                                               | parameter `depth`                         | parameter `parsed`               |
+|-------------------------------|-----------------------------------------------------------|-------------------------------------------|----------------------------------|
+| `parse_event_t::object_start` | the parser read `{` and started to process a JSON object  | depth of the parent of the JSON object    | a JSON value with type discarded |
+| `parse_event_t::key`          | the parser read a key of a value in an object             | depth of the currently parsed JSON object | a JSON string containing the key |
+| `parse_event_t::object_end`   | the parser read `}` and finished processing a JSON object | depth of the parent of the JSON object    | the parsed JSON object           |
+| `parse_event_t::array_start`  | the parser read `[` and started to process a JSON array   | depth of the parent of the JSON array     | a JSON value with type discarded |
+| `parse_event_t::array_end`    | the parser read `]` and finished processing a JSON array  | depth of the parent of the JSON array     | the parsed JSON array            |
+| `parse_event_t::value`        | the parser finished reading a JSON value                  | depth of the value                        | the parsed JSON value            |
+
+![Example when certain parse events are triggered](../../images/callback_events.png)
+
+Discarding a value (i.e., returning `#!cpp false`) has different effects depending on the context in which function was
+called:
+
+- Discarded values in structured types are skipped. That is, the parser will behave as if the discarded value was never
+  read.
+- In case a value outside a structured type is skipped, it is replaced with `null`. This case happens if the top-level
+  element is skipped.
+
+## Parameters
+
+`depth` (in)
+:   the depth of the recursion during parsing
+
+`event` (in)
+:   an event of type [`parse_event_t`](parse_event_t.md) indicating the context in
+    the callback function has been called
+
+`parsed` (in, out)
+:    the current intermediate parse result; note that
+     writing to this value has no effect for `parse_event_t::key` events
+
+## Return value
+
+Whether the JSON value which called the function during parsing should be kept (`#!cpp true`) or not (`#!cpp false`). In
+the latter case, it is either skipped completely or replaced by an empty discarded object.
+
+## Examples
+
+??? example
+
+    The example below demonstrates the `parse()` function with
+    and without callback function.
+
+    ```cpp
+    --8<-- "examples/parse__string__parser_callback_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/parse__string__parser_callback_t.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/patch.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/patch.md
new file mode 100644
index 00000000..deec4743
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/patch.md
@@ -0,0 +1,73 @@
+# <small>nlohmann::basic_json::</small>patch
+
+```cpp
+basic_json patch(const basic_json& json_patch) const;
+```
+
+[JSON Patch](http://jsonpatch.com) defines a JSON document structure for expressing a sequence of operations to apply to
+a JSON document. With this function, a JSON Patch is applied to the current JSON value by executing all operations from
+the patch.
+
+## Parameters
+
+`json_patch` (in)
+:   JSON patch document
+
+## Return value
+
+patched document
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Exceptions
+
+- Throws [`parse_error.104`](../../home/exceptions.md#jsonexceptionparse_error104) if the JSON patch does not consist of
+  an array of objects.
+- Throws [`parse_error.105`](../../home/exceptions.md#jsonexceptionparse_error105) if the JSON patch is malformed (e.g.,
+  mandatory attributes are missing); example: `"operation add must have member path"`.
+- Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if an array index is out of range.
+- Throws [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if a JSON pointer inside the patch
+  could not be resolved successfully in the current JSON value; example: `"key baz not found"`.
+- Throws [`out_of_range.405`](../../home/exceptions.md#jsonexceptionout_of_range405) if JSON pointer has no parent
+  ("add", "remove", "move")
+- Throws [`out_of_range.501`](../../home/exceptions.md#jsonexceptionother_error501) if "test" operation was
+  unsuccessful.
+
+## Complexity
+
+Linear in the size of the JSON value and the length of the JSON patch. As usually only a fraction of the JSON value is
+affected by the patch, the complexity can usually be neglected.
+
+## Notes
+
+The application of a patch is atomic: Either all operations succeed and the patched document is returned or an exception
+is thrown. In any case, the original value is not changed: the patch is applied to a copy of the value.
+
+## Examples
+
+??? example
+
+    The following code shows how a JSON patch is applied to a value.
+     
+    ```cpp
+    --8<-- "examples/patch.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/patch.output"
+    ```
+
+## See also
+
+- [RFC 6902 (JSON Patch)](https://tools.ietf.org/html/rfc6902)
+- [RFC 6901 (JSON Pointer)](https://tools.ietf.org/html/rfc6901)
+- [patch_inplace](patch_inplace.md) applies a JSON Patch without creating a copy of the document
+- [merge_patch](merge_patch.md) applies a JSON Merge Patch
+
+## Version history
+
+- Added in version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/patch_inplace.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/patch_inplace.md
new file mode 100644
index 00000000..e8fd176c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/patch_inplace.md
@@ -0,0 +1,70 @@
+# <small>nlohmann::basic_json::</small>patch_inplace
+
+```cpp
+void patch_inplace(const basic_json& json_patch) const;
+```
+
+[JSON Patch](http://jsonpatch.com) defines a JSON document structure for expressing a sequence of operations to apply to
+a JSON document. With this function, a JSON Patch is applied to the current JSON value by executing all operations from
+the patch. This function applies a JSON patch in place and returns void.
+
+## Parameters
+
+`json_patch` (in)
+:   JSON patch document
+
+## Exception safety
+
+No guarantees, value may be corrupted by an unsuccessful patch operation.
+
+## Exceptions
+
+- Throws [`parse_error.104`](../../home/exceptions.md#jsonexceptionparse_error104) if the JSON patch does not consist of
+  an array of objects.
+- Throws [`parse_error.105`](../../home/exceptions.md#jsonexceptionparse_error105) if the JSON patch is malformed (e.g.,
+  mandatory attributes are missing); example: `"operation add must have member path"`.
+- Throws [`out_of_range.401`](../../home/exceptions.md#jsonexceptionout_of_range401) if an array index is out of range.
+- Throws [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if a JSON pointer inside the patch
+  could not be resolved successfully in the current JSON value; example: `"key baz not found"`.
+- Throws [`out_of_range.405`](../../home/exceptions.md#jsonexceptionout_of_range405) if JSON pointer has no parent
+  ("add", "remove", "move")
+- Throws [`out_of_range.501`](../../home/exceptions.md#jsonexceptionother_error501) if "test" operation was
+  unsuccessful.
+
+## Complexity
+
+Linear in the size of the JSON value and the length of the JSON patch. As usually only a fraction of the JSON value is
+affected by the patch, the complexity can usually be neglected.
+
+## Notes
+
+Unlike [`patch`](patch.md), `patch_inplace` applies the operation "in place" and no copy of the JSON value is created.
+That makes it faster for large documents by avoiding the copy. However, the JSON value might be corrupted if the
+function throws an exception.
+
+## Examples
+
+??? example
+
+    The following code shows how a JSON patch is applied to a value.
+     
+    ```cpp
+    --8<-- "examples/patch_inplace.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/patch_inplace.output"
+    ```
+
+## See also
+
+- [RFC 6902 (JSON Patch)](https://tools.ietf.org/html/rfc6902)
+- [RFC 6901 (JSON Pointer)](https://tools.ietf.org/html/rfc6901)
+- [patch](patch.md) applies a JSON Merge Patch
+- [merge_patch](merge_patch.md) applies a JSON Merge Patch
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/push_back.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/push_back.md
new file mode 100644
index 00000000..e0610393
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/push_back.md
@@ -0,0 +1,120 @@
+# <small>nlohmann::basic_json::</small>push_back
+
+```cpp
+// (1)
+void push_back(basic_json&& val);
+void push_back(const basic_json& val);
+
+// (2)
+void push_back(const typename object_t::value_type& val);
+
+// (3)
+void push_back(initializer_list_t init);
+```
+
+1. Appends the given element `val` to the end of the JSON array. If the function is called on a JSON null value, an
+   empty array is created before appending `val`.
+
+2. Inserts the given element `val` to the JSON object. If the function is called on a JSON null value, an empty object
+   is created before inserting `val`.
+
+3. This function allows using `push_back` with an initializer list. In case
+
+    1. the current value is an object,
+    2. the initializer list `init` contains only two elements, and
+    3. the first element of `init` is a string,
+
+    `init` is converted into an object element and added using `push_back(const typename object_t::value_type&)`.
+    Otherwise, `init` is converted to a JSON value and added using `push_back(basic_json&&)`.
+
+## Iterator invalidation
+
+For all cases where an element is added to an **array**, a reallocation can happen, in which case all iterators (including
+the [`end()`](end.md) iterator) and all references to the elements are invalidated. Otherwise, only the
+[`end()`](end.md) iterator is invalidated.
+
+For [`ordered_json`](../ordered_json.md), also adding an element to an **object** can yield a reallocation which again
+invalidates all iterators and all references.
+
+## Parameters
+
+`val` (in)
+:   the value to add to the JSON array/object
+
+`init` (in)
+:   an initializer list
+
+## Exceptions
+
+All functions can throw the following exception:
+  - Throws [`type_error.308`](../../home/exceptions.md#jsonexceptiontype_error308) when called on a type other than
+    JSON array or null; example: `"cannot use push_back() with number"`
+
+## Complexity
+
+1. Amortized constant.
+2. Logarithmic in the size of the container, O(log(`size()`)).
+3. Linear in the size of the initializer list `init`.
+
+## Notes
+
+(3) This function is required to resolve an ambiguous overload error, because pairs like `{"key", "value"}` can be both
+    interpreted as `object_t::value_type` or `std::initializer_list<basic_json>`, see
+    [#235](https://github.com/nlohmann/json/issues/235) for more information.
+
+## Examples
+
+??? example "Example: (1) add element to array"
+
+    The example shows how `push_back()` and `+=` can be used to add elements to a JSON array. Note how the `null` value
+    was silently converted to a JSON array.
+    
+    ```cpp
+    --8<-- "examples/push_back.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/push_back.output"
+    ```
+
+??? example "Example: (2) add element to object"
+
+    The example shows how `push_back()` and `+=` can be used to add elements to a JSON object. Note how the `null` value
+    was silently converted to a JSON object.
+
+    ```cpp
+    --8<-- "examples/push_back__object_t__value.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/push_back__object_t__value.output"
+    ```
+
+??? example "Example: (3) add to object from initializer list"
+
+    The example shows how initializer lists are treated as objects when possible.
+
+    ```cpp
+    --8<-- "examples/push_back__initializer_list.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/push_back__initializer_list.output"
+    ```
+
+## See also
+
+- [emplace_back](emplace_back.md) add a value to an array
+- [operator+=](operator+=.md) add a value to an array/object
+
+## Version history
+
+1. Since version 1.0.0.
+2. Since version 1.0.0.
+2. Since version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/rbegin.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/rbegin.md
new file mode 100644
index 00000000..126c4712
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/rbegin.md
@@ -0,0 +1,42 @@
+# <small>nlohmann::basic_json::</small>rbegin
+
+```cpp
+reverse_iterator rbegin() noexcept;
+const_reverse_iterator rbegin() const noexcept;
+```
+
+Returns an iterator to the reverse-beginning; that is, the last element.
+
+![Illustration from cppreference.com](../../images/range-rbegin-rend.svg)
+
+## Return value
+
+reverse iterator to the first element
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `rbegin()`.
+    
+    ```cpp
+    --8<-- "examples/rbegin.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/rbegin.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/rend.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/rend.md
new file mode 100644
index 00000000..96da7a5f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/rend.md
@@ -0,0 +1,43 @@
+# <small>nlohmann::basic_json::</small>rend
+
+```cpp
+reverse_iterator rend() noexcept;
+const_reverse_iterator rend() const noexcept;
+```
+
+Returns an iterator to the reverse-end; that is, one before the first element. This element acts as a placeholder,
+attempting to access it results in undefined behavior.
+
+![Illustration from cppreference.com](../../images/range-rbegin-rend.svg)
+
+## Return value
+
+reverse iterator to the element following the last element
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code shows an example for `eend()`.
+    
+    ```cpp
+    --8<-- "examples/rend.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/rend.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/sax_parse.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/sax_parse.md
new file mode 100644
index 00000000..e2ac1b41
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/sax_parse.md
@@ -0,0 +1,115 @@
+# <small>nlohmann::basic_json::</small>sax_parse
+
+```cpp
+// (1)
+template <typename InputType, typename SAX>
+static bool sax_parse(InputType&& i,
+                      SAX* sax,
+                      input_format_t format = input_format_t::json,
+                      const bool strict = true,
+                      const bool ignore_comments = false);
+
+// (2)
+template<class IteratorType, class SAX>
+static bool sax_parse(IteratorType first, IteratorType last,
+                      SAX* sax,
+                      input_format_t format = input_format_t::json,
+                      const bool strict = true,
+                      const bool ignore_comments = false);
+```
+
+Read from input and generate SAX events
+
+1. Read from a compatible input.
+2. Read from a pair of character iterators
+    
+    The value_type of the iterator must be an integral type with size of 1, 2 or 4 bytes, which will be interpreted
+    respectively as UTF-8, UTF-16 and UTF-32.
+
+The SAX event lister must follow the interface of [`json_sax`](../json_sax/index.md).
+
+## Template parameters
+
+`InputType`
+:   A compatible input, for instance:
+    
+    - an `std::istream` object
+    - a `FILE` pointer
+    - a C-style array of characters
+    - a pointer to a null-terminated string of single byte characters
+    - an object `obj` for which `begin(obj)` and `end(obj)` produces a valid pair of
+      iterators.
+
+`IteratorType`
+:   Description
+
+`SAX`
+:   Description
+
+## Parameters
+
+`i` (in)
+:   Input to parse from.
+
+`sax` (in)
+:   SAX event listener
+
+`format` (in)
+:    the format to parse (JSON, CBOR, MessagePack, or UBJSON) (optional, `input_format_t::json` by default), see
+     [`input_format_t`](input_format_t.md) for more information
+
+`strict` (in)
+:   whether the input has to be consumed completely (optional, `#!cpp true` by default)
+
+`ignore_comments` (in)
+:   whether comments should be ignored and treated like whitespace (`#!cpp true`) or yield a parse error
+    (`#!cpp false`); (optional, `#!cpp false` by default)
+
+`first` (in)
+:   iterator to start of character range
+
+`last` (in)
+:   iterator to end of character range
+
+## Return value
+
+return value of the last processed SAX event
+
+## Exception safety
+
+## Complexity
+
+Linear in the length of the input. The parser is a predictive LL(1) parser. The complexity can be higher if the SAX
+consumer `sax` has a super-linear complexity.
+
+## Notes
+
+A UTF-8 byte order mark is silently ignored.
+
+## Examples
+
+??? example
+
+    The example below demonstrates the `sax_parse()` function reading from string and processing the events with a
+    user-defined SAX event consumer.
+    
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
+- Ignoring comments via `ignore_comments` added in version 3.9.0.
+
+!!! warning "Deprecation"
+
+    Overload (2) replaces calls to `sax_parse` with a pair of iterators as their first parameter which has been
+    deprecated in version 3.8.0. This overload will be removed in version 4.0.0. Please replace all calls like
+    `#!cpp sax_parse({ptr, ptr+len});` with `#!cpp sax_parse(ptr, ptr+len);`.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/size.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/size.md
new file mode 100644
index 00000000..4ff582db
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/size.md
@@ -0,0 +1,57 @@
+# <small>nlohmann::basic_json::</small>size
+
+```cpp
+size_type size() const noexcept;
+```
+
+Returns the number of elements in a JSON value.
+    
+## Return value
+
+The return value depends on the different types and is defined as follows:
+
+| Value type | return value                        |
+|------------|-------------------------------------|
+| null       | `0`                                 |
+| boolean    | `1`                                 |
+| string     | `1`                                 |
+| number     | `1`                                 |
+| binary     | `1`                                 |
+| object     | result of function object_t::size() |
+| array      | result of function array_t::size()  |
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant, as long as [`array_t`](array_t.md) and [`object_t`](object_t.md) satisfy the
+[Container](https://en.cppreference.com/w/cpp/named_req/Container) concept; that is, their `size()` functions have
+constant complexity.
+
+## Notes
+
+This function does not return the length of a string stored as JSON value -- it returns the number of elements in the
+JSON value which is `1` in the case of a string.
+
+## Examples
+
+??? example
+
+    The following code calls `size()` on the different value types.
+    
+    ```cpp
+    --8<-- "examples/size.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/size.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended to return `1` for binary types in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/std_hash.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/std_hash.md
new file mode 100644
index 00000000..b9de74f8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/std_hash.md
@@ -0,0 +1,34 @@
+# <small>std::</small>hash<nlohmann::basic_json\>
+
+```cpp
+namespace std {
+    struct hash<nlohmann::basic_json>;
+}
+```
+
+Return a hash value for a JSON object. The hash function tries to rely on `std::hash` where possible. Furthermore, the
+type of the JSON value is taken into account to have different hash values for `#!json null`, `#!cpp 0`, `#!cpp 0U`, and
+`#!cpp false`, etc.
+
+## Examples
+
+??? example
+
+    The example shows how to calculate hash values for different JSON values.
+     
+    ```cpp
+    --8<-- "examples/std_hash.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/std_hash.output"
+    ```
+
+    Note the output is platform-dependent.
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended for arbitrary basic_json types in version 3.10.5.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/std_swap.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/std_swap.md
new file mode 100644
index 00000000..d30f3bcc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/std_swap.md
@@ -0,0 +1,51 @@
+# std::swap<basic_json\>
+
+```cpp
+namespace std {
+    void swap(nlohmann::basic_json& j1, nlohmann::basic_json& j2);
+}
+```
+
+Exchanges the values of two JSON objects.
+
+## Parameters
+
+`j1` (in, out)
+:   value to be replaced by `j2`
+
+`j2` (in, out)
+:   value to be replaced by `j1`
+
+## Possible implementation
+
+```cpp
+void swap(nlohmann::basic_json& j1, nlohmann::basic_json& j2)
+{
+    j1.swap(j2);
+}
+```
+
+## Examples
+
+??? example
+
+    The following code shows how two values are swapped with `std::swap`.
+     
+    ```cpp
+    --8<-- "examples/std_swap.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/std_swap.output"
+    ```
+
+## See also
+
+- [swap](swap.md)
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended for arbitrary basic_json types in version 3.10.5.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/string_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/string_t.md
new file mode 100644
index 00000000..3ab4412d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/string_t.md
@@ -0,0 +1,66 @@
+# <small>nlohmann::basic_json::</small>string_t
+
+```cpp
+using string_t = StringType;
+```
+
+The type used to store JSON strings.
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes JSON strings as follows:
+> A string is a sequence of zero or more Unicode characters.
+
+To store objects in C++, a type is defined by the template parameter described below. Unicode values are split by the
+JSON class into byte-sized characters during deserialization.
+
+## Template parameters
+
+`StringType`
+:   the container to store strings (e.g., `std::string`). Note this container is used for keys/names in objects, see
+    [object_t](object_t.md).
+
+## Notes
+
+#### Default type
+
+With the default values for `StringType` (`std::string`), the default value for `string_t` is `#!cpp std::string`.
+
+#### Encoding
+
+Strings are stored in UTF-8 encoding. Therefore, functions like `std::string::size()` or `std::string::length()` return
+the number of bytes in the string rather than the number of characters or glyphs.
+
+#### String comparison
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) states:
+> Software implementations are typically required to test names of object members for equality. Implementations that
+> transform the textual representation into sequences of Unicode code units and then perform the comparison numerically,
+> code unit by code unit, are interoperable in the sense that implementations will agree in all cases on equality or
+> inequality of two strings. For example, implementations that compare strings with escaped characters unconverted may
+> incorrectly find that `"a\\b"` and `"a\u005Cb"` are not equal.
+
+This implementation is interoperable as it does compare strings code unit by code unit.
+
+#### Storage
+
+String values are stored as pointers in a `basic_json` type. That is, for any access to string values, a pointer of type
+`string_t*` must be dereferenced.
+
+## Examples
+
+??? example
+
+    The following code shows that `string_t` is by default, a typedef to `#!cpp std::string`.
+     
+    ```cpp
+    --8<-- "examples/string_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/string_t.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/swap.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/swap.md
new file mode 100644
index 00000000..a5730ffa
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/swap.md
@@ -0,0 +1,157 @@
+# <small>nlohmann::basic_json::</small>swap
+
+```cpp
+// (1)
+void swap(reference other) noexcept;
+
+// (2)
+void swap(reference left, reference right) noexcept;
+
+// (3)
+void swap(array_t& other);
+
+// (4)
+void swap(object_t& other);
+
+// (5)
+void swap(string_t& other);
+
+// (6)
+void swap(binary_t& other);
+
+// (7)
+void swap(typename binary_t::container_type& other);
+```
+
+1. Exchanges the contents of the JSON value with those of `other`. Does not invoke any move, copy, or swap operations on
+   individual elements. All iterators and references remain valid. The past-the-end iterator is invalidated. 
+2. Exchanges the contents of the JSON value from `left` with those of `right`. Does not invoke any move, copy, or swap
+   operations on individual elements. All iterators and references remain valid. The past-the-end iterator is
+   invalidated. Implemented as a friend function callable via ADL.
+3. Exchanges the contents of a JSON array with those of `other`. Does not invoke any move, copy, or swap operations on
+   individual elements. All iterators and references remain valid. The past-the-end iterator is invalidated. 
+4. Exchanges the contents of a JSON object with those of `other`. Does not invoke any move, copy, or swap operations on
+   individual elements. All iterators and references remain valid. The past-the-end iterator is invalidated.
+5. Exchanges the contents of a JSON string with those of `other`. Does not invoke any move, copy, or swap operations on
+   individual elements. All iterators and references remain valid. The past-the-end iterator is invalidated.
+6. Exchanges the contents of a binary value with those of `other`. Does not invoke any move, copy, or swap operations on
+   individual elements. All iterators and references remain valid. The past-the-end iterator is invalidated.
+7. Exchanges the contents of a binary value with those of `other`. Does not invoke any move, copy, or swap operations on
+   individual elements. All iterators and references remain valid. The past-the-end iterator is invalidated. Unlike
+   version (6), no binary subtype is involved.
+
+## Parameters
+
+`other` (in, out)
+:   value to exchange the contents with
+
+`left` (in, out)
+:   value to exchange the contents with
+
+`right` (in, out)
+:   value to exchange the contents with
+
+## Exceptions
+
+1. No-throw guarantee: this function never throws exceptions.
+2. No-throw guarantee: this function never throws exceptions.
+3. Throws [`type_error.310`](../../home/exceptions.md#jsonexceptiontype_error310) if called on JSON values other than
+   arrays; example: `"cannot use swap() with boolean"`
+4. Throws [`type_error.310`](../../home/exceptions.md#jsonexceptiontype_error310) if called on JSON values other than
+   objects; example: `"cannot use swap() with boolean"`
+5. Throws [`type_error.310`](../../home/exceptions.md#jsonexceptiontype_error310) if called on JSON values other than
+   strings; example: `"cannot use swap() with boolean"`
+6. Throws [`type_error.310`](../../home/exceptions.md#jsonexceptiontype_error310) if called on JSON values other than
+   binaries; example: `"cannot use swap() with boolean"`
+7. Throws [`type_error.310`](../../home/exceptions.md#jsonexceptiontype_error310) if called on JSON values other than
+   binaries; example: `"cannot use swap() with boolean"`
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example "Example: Swap JSON value (1, 2)"
+
+    The example below shows how JSON values can be swapped with `swap()`.
+    
+    ```cpp
+    --8<-- "examples/swap__reference.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/swap__reference.output"
+    ```
+
+??? example "Example: Swap array (3)"
+
+    The example below shows how arrays can be swapped with `swap()`.
+    
+    ```cpp
+    --8<-- "examples/swap__array_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/swap__array_t.output"
+    ```
+
+??? example "Example: Swap object (4)"
+
+    The example below shows how objects can be swapped with `swap()`.
+    
+    ```cpp
+    --8<-- "examples/swap__object_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/swap__object_t.output"
+    ```
+
+??? example "Example: Swap string (5)"
+
+    The example below shows how strings can be swapped with `swap()`.
+    
+    ```cpp
+    --8<-- "examples/swap__string_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/swap__string_t.output"
+    ```
+
+??? example "Example: Swap string (6)"
+
+    The example below shows how binary values can be swapped with `swap()`.
+    
+    ```cpp
+    --8<-- "examples/swap__binary_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/swap__binary_t.output"
+    ```
+
+## See also
+
+- [std::swap<basic_json\>](std_swap.md)
+
+## Version history
+
+1. Since version 1.0.0.
+2. Since version 1.0.0.
+3. Since version 1.0.0.
+4. Since version 1.0.0.
+5. Since version 1.0.0.
+6. Since version 3.8.0.
+7. Since version 3.8.0.
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_bjdata.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_bjdata.md
new file mode 100644
index 00000000..48598a5e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_bjdata.md
@@ -0,0 +1,70 @@
+# <small>nlohmann::basic_json::</small>to_bjdata
+
+```cpp
+// (1)
+static std::vector<std::uint8_t> to_bjdata(const basic_json& j,
+                                           const bool use_size = false,
+                                           const bool use_type = false);
+
+// (2)
+static void to_bjdata(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                      const bool use_size = false, const bool use_type = false);
+static void to_bjdata(const basic_json& j, detail::output_adapter<char> o,
+                      const bool use_size = false, const bool use_type = false);
+```
+
+Serializes a given JSON value `j` to a byte vector using the BJData (Binary JData) serialization format. BJData aims to
+be more compact than JSON itself, yet more efficient to parse.
+
+1. Returns a byte vector containing the BJData serialization.
+2. Writes the BJData serialization to an output adapter.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/bjdata.md).
+
+## Parameters
+
+`j` (in)
+:   JSON value to serialize
+
+`o` (in)
+:   output adapter to write serialization to
+
+`use_size` (in)
+:   whether to add size annotations to container types; optional, `#!cpp false` by default.
+
+`use_type` (in)
+:   whether to add type annotations to container types (must be combined with `#!cpp use_size = true`); optional,
+`#!cpp false` by default.
+
+## Return value
+
+1. BJData serialization as byte vector
+2. (none)
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Linear in the size of the JSON value `j`.
+
+## Examples
+
+??? example
+
+    The example shows the serialization of a JSON value to a byte vector in BJData format.
+     
+    ```cpp
+    --8<-- "examples/to_bjdata.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/to_bjdata.output"
+    ```
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_bson.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_bson.md
new file mode 100644
index 00000000..5c4324a3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_bson.md
@@ -0,0 +1,59 @@
+# <small>nlohmann::basic_json::</small>to_bson
+
+```cpp
+// (1)
+static std::vector<std::uint8_t> to_bson(const basic_json& j);
+
+// (2)
+static void to_bson(const basic_json& j, detail::output_adapter<std::uint8_t> o);
+static void to_bson(const basic_json& j, detail::output_adapter<char> o);
+```
+
+BSON (Binary JSON) is a binary format in which zero or more ordered key/value pairs are stored as a single entity (a
+so-called document).
+
+1. Returns a byte vector containing the BSON serialization.
+2. Writes the BSON serialization to an output adapter.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/bson.md).
+
+## Parameters
+
+`j` (in)
+:   JSON value to serialize
+
+`o` (in)
+:   output adapter to write serialization to
+
+## Return value
+
+1. BSON serialization as byte vector
+2. (none)
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Linear in the size of the JSON value `j`.
+
+## Examples
+
+??? example
+
+    The example shows the serialization of a JSON value to a byte vector in BSON format.
+     
+    ```cpp
+    --8<-- "examples/to_bson.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/to_bson.output"
+    ```
+
+## Version history
+
+- Added in version 3.4.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_cbor.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_cbor.md
new file mode 100644
index 00000000..0f944c48
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_cbor.md
@@ -0,0 +1,61 @@
+# <small>nlohmann::basic_json::</small>to_cbor
+
+```cpp
+// (1)
+static std::vector<std::uint8_t> to_cbor(const basic_json& j);
+
+// (2)
+static void to_cbor(const basic_json& j, detail::output_adapter<std::uint8_t> o);
+static void to_cbor(const basic_json& j, detail::output_adapter<char> o);
+```
+
+Serializes a given JSON value `j` to a byte vector using the CBOR (Concise Binary Object Representation) serialization
+format. CBOR is a binary serialization format which aims to be more compact than JSON itself, yet more efficient to
+parse.
+
+1. Returns a byte vector containing the CBOR serialization.
+2. Writes the CBOR serialization to an output adapter.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/cbor.md).
+
+## Parameters
+
+`j` (in)
+:   JSON value to serialize
+
+`o` (in)
+:   output adapter to write serialization to
+
+## Return value
+
+1. CBOR serialization as byte vector
+2. (none)
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Linear in the size of the JSON value `j`.
+
+## Examples
+
+??? example
+
+    The example shows the serialization of a JSON value to a byte vector in CBOR format.
+     
+    ```cpp
+    --8<-- "examples/to_cbor.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/to_cbor.output"
+    ```
+
+## Version history
+
+- Added in version 2.0.9.
+- Compact representation of floating-point numbers added in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_msgpack.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_msgpack.md
new file mode 100644
index 00000000..7d40981d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_msgpack.md
@@ -0,0 +1,59 @@
+# <small>nlohmann::basic_json::</small>to_msgpack
+
+```cpp
+// (1)
+static std::vector<std::uint8_t> to_msgpack(const basic_json& j);
+
+// (2)
+static void to_msgpack(const basic_json& j, detail::output_adapter<std::uint8_t> o);
+static void to_msgpack(const basic_json& j, detail::output_adapter<char> o);
+```
+
+Serializes a given JSON value `j` to a byte vector using the MessagePack serialization format. MessagePack is a binary
+serialization format which aims to be more compact than JSON itself, yet more efficient to parse.
+
+1. Returns a byte vector containing the MessagePack serialization.
+2. Writes the MessagePack serialization to an output adapter.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/messagepack.md).
+
+## Parameters
+
+`j` (in)
+:   JSON value to serialize
+
+`o` (in)
+:   output adapter to write serialization to
+
+## Return value
+
+1. MessagePack serialization as byte vector
+2. (none)
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Linear in the size of the JSON value `j`.
+
+## Examples
+
+??? example
+
+    The example shows the serialization of a JSON value to a byte vector in MessagePack format.
+     
+    ```cpp
+    --8<-- "examples/to_msgpack.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/to_msgpack.output"
+    ```
+
+## Version history
+
+- Added in version 2.0.9.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_string.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_string.md
new file mode 100644
index 00000000..2b907e21
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_string.md
@@ -0,0 +1,65 @@
+# to_string(basic_json)
+
+```cpp
+template <typename BasicJsonType>
+std::string to_string(const BasicJsonType& j);
+```
+
+This function implements a user-defined to_string for JSON objects.
+
+## Template parameters
+
+`BasicJsonType`
+:   a specialization of [`basic_json`](index.md)
+
+## Return value
+
+string containing the serialization of the JSON value
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes to any JSON value.
+
+## Exceptions
+
+Throws [`type_error.316`](../../home/exceptions.md#jsonexceptiontype_error316) if a string stored inside the JSON value
+is not UTF-8 encoded
+
+## Complexity
+
+Linear.
+
+## Possible implementation
+
+```cpp
+template <typename BasicJsonType>
+std::string to_string(const BasicJsonType& j)
+{
+    return j.dump();
+}
+```
+
+## Examples
+
+??? example
+
+    The following code shows how the library's `to_string()` function integrates with others, allowing
+    argument-dependent lookup.
+     
+    ```cpp
+    --8<-- "examples/to_string.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/to_string.output"
+    ```
+
+## See also
+
+- [dump](dump.md)
+
+## Version history
+
+Added in version 3.7.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_ubjson.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_ubjson.md
new file mode 100644
index 00000000..e3cd5d62
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/to_ubjson.md
@@ -0,0 +1,70 @@
+# <small>nlohmann::basic_json::</small>to_ubjson
+
+```cpp
+// (1)
+static std::vector<std::uint8_t> to_ubjson(const basic_json& j,
+                                           const bool use_size = false,
+                                           const bool use_type = false);
+
+// (2)
+static void to_ubjson(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                      const bool use_size = false, const bool use_type = false);
+static void to_ubjson(const basic_json& j, detail::output_adapter<char> o,
+                      const bool use_size = false, const bool use_type = false);
+```
+
+Serializes a given JSON value `j` to a byte vector using the UBJSON (Universal Binary JSON) serialization format. UBJSON
+aims to be more compact than JSON itself, yet more efficient to parse.
+
+1. Returns a byte vector containing the UBJSON serialization.
+2. Writes the UBJSON serialization to an output adapter.
+
+The exact mapping and its limitations is described on a [dedicated page](../../features/binary_formats/ubjson.md).
+
+## Parameters
+
+`j` (in)
+:   JSON value to serialize
+
+`o` (in)
+:   output adapter to write serialization to
+
+`use_size` (in)
+:   whether to add size annotations to container types; optional, `#!cpp false` by default.
+
+`use_type` (in)
+:   whether to add type annotations to container types (must be combined with `#!cpp use_size = true`); optional,
+    `#!cpp false` by default.
+
+## Return value
+
+1. UBJSON serialization as byte vector
+2. (none)
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
+
+## Complexity
+
+Linear in the size of the JSON value `j`.
+
+## Examples
+
+??? example
+
+    The example shows the serialization of a JSON value to a byte vector in UBJSON format.
+     
+    ```cpp
+    --8<-- "examples/to_ubjson.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/to_ubjson.output"
+    ```
+
+## Version history
+
+- Added in version 3.1.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type.md
new file mode 100644
index 00000000..deedd6b6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type.md
@@ -0,0 +1,54 @@
+# <small>nlohmann::basic_json::</small>type
+
+```cpp
+constexpr value_t type() const noexcept;
+```
+
+Return the type of the JSON value as a value from the [`value_t`](value_t.md) enumeration.
+
+## Return value
+
+the type of the JSON value
+
+| Value type                | return value               |
+|---------------------------|----------------------------|
+| `#!json null`             | `value_t::null`            |
+| boolean                   | `value_t::boolean`         |
+| string                    | `value_t::string`          |
+| number (integer)          | `value_t::number_integer`  |
+| number (unsigned integer) | `value_t::number_unsigned` |
+| number (floating-point)   | `value_t::number_float`    |
+| object                    | `value_t::object`          |
+| array                     | `value_t::array`           |
+| binary                    | `value_t::binary`          |
+| discarded                 | `value_t::discarded`       |
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `type()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/type.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Added unsigned integer type in version 2.0.0.
+- Added binary type in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type_error.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type_error.md
new file mode 100644
index 00000000..4d590556
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type_error.md
@@ -0,0 +1,78 @@
+# <small>nlohmann::basic_json::</small>type_error
+
+```cpp
+class type_error : public exception;
+```
+
+This exception is thrown in case of a type error; that is, a library function is executed on a JSON value whose type
+does not match the expected semantics.
+
+Exceptions have ids 3xx (see [list of type errors](../../home/exceptions.md#type-errors)).
+
+```mermaid
+classDiagram
+  direction LR
+  
+    class std_exception ["std::exception"] {
+        <<interface>>
+    }
+
+    class json_exception ["basic_json::exception"] {
+        +const int id
+        +const char* what() const
+    }
+    
+    class json_parse_error ["basic_json::parse_error"] {
+        +const std::size_t byte
+    }
+
+    class json_invalid_iterator ["basic_json::invalid_iterator"]
+    class json_type_error ["basic_json::type_error"]
+    class json_out_of_range ["basic_json::out_of_range"]
+    class json_other_error ["basic_json::other_error"]
+
+    std_exception <|-- json_exception
+    json_exception <|-- json_parse_error
+    json_exception <|-- json_invalid_iterator
+    json_exception <|-- json_type_error
+    json_exception <|-- json_out_of_range
+    json_exception <|-- json_other_error
+
+    style json_type_error fill:#CCCCFF
+```
+
+## Member functions
+
+- **what** - returns explanatory string
+
+## Member variables
+
+- **id** - the id of the exception
+
+## Examples
+
+??? example
+
+    The following code shows how a `type_error` exception can be caught.
+    
+    ```cpp
+    --8<-- "examples/type_error.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/type_error.output"
+    ```
+
+## See also
+
+- [List of type errors](../../home/exceptions.md#type-errors)
+- [`parse_error`](parse_error.md) for exceptions indicating a parse error
+- [`invalid_iterator`](invalid_iterator.md) for exceptions indicating errors with iterators
+- [`out_of_range`](out_of_range.md) for exceptions indicating access out of the defined range
+- [`other_error`](other_error.md) for exceptions indicating other library errors
+
+## Version history
+
+- Since version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type_name.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type_name.md
new file mode 100644
index 00000000..389c2b1d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/type_name.md
@@ -0,0 +1,54 @@
+# <small>nlohmann::basic_json::</small>type_name
+
+```cpp
+const char* type_name() const noexcept;
+```
+
+Returns the type name as string to be used in error messages -- usually to indicate that a function was called on a
+wrong JSON type.
+    
+## Return value
+
+a string representation of the type ([`value_t`](value_t.md)):
+
+| Value type                                         | return value  |
+|----------------------------------------------------|---------------|
+| `#!json null`                                      | `"null"`      |
+| boolean                                            | `"boolean"`   |
+| string                                             | `"string"`    |
+| number (integer, unsigned integer, floating-point) | `"number"`    |
+| object                                             | `"object"`    |
+| array                                              | `"array"`     |
+| binary                                             | `"binary"`    |
+| discarded                                          | `"discarded"` |
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `type_name()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/type_name.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/type_name.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Part of the public API version since 2.1.0.
+- Changed return value to `const char*` and added `noexcept` in version 3.0.0.
+- Added support for binary type in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/unflatten.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/unflatten.md
new file mode 100644
index 00000000..d9778036
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/unflatten.md
@@ -0,0 +1,61 @@
+# <small>nlohmann::basic_json::</small>unflatten
+
+```cpp
+basic_json unflatten() const;
+```
+
+The function restores the arbitrary nesting of a JSON value that has been flattened before using the
+[`flatten()`](flatten.md) function. The JSON value must meet certain constraints:
+
+1. The value must be an object.
+2. The keys must be JSON pointers (see [RFC 6901](https://tools.ietf.org/html/rfc6901))
+3. The mapped values must be primitive JSON types.
+    
+## Return value
+
+the original JSON from a flattened version
+
+## Exception safety
+
+Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+The function can throw the following exceptions:
+
+- Throws [`type_error.314`](../../home/exceptions.md#jsonexceptiontype_error314) if value is not an object
+- Throws [`type_error.315`](../../home/exceptions.md#jsonexceptiontype_error315) if object values are not primitive
+
+## Complexity
+
+Linear in the size the JSON value.
+
+## Notes
+
+Empty objects and arrays are flattened by [`flatten()`](flatten.md) to `#!json null` values and can not unflattened to
+their original type. Apart from this example, for a JSON value `j`, the following is always true:
+`#!cpp j == j.flatten().unflatten()`.
+
+## Examples
+
+??? example
+
+    The following code shows how a flattened JSON object is unflattened into the original nested JSON object.
+    
+    ```cpp
+    --8<-- "examples/unflatten.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/unflatten.output"
+    ```
+
+## See also
+
+- [flatten](flatten.md) the reverse function
+
+## Version history
+
+- Added in version 2.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/update.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/update.md
new file mode 100644
index 00000000..bfe785d7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/update.md
@@ -0,0 +1,147 @@
+# <small>nlohmann::basic_json::</small>update
+
+```cpp
+// (1)
+void update(const_reference j, bool merge_objects = false);
+
+// (2)
+void update(const_iterator first, const_iterator last, bool merge_objects = false);
+```
+
+1. Inserts all values from JSON object `j`.
+2. Inserts all values from range `[first, last)`
+
+When `merge_objects` is `#!c false` (default), existing keys are overwritten. When `merge_objects` is `#!c true`,
+recursively merges objects with common keys.
+
+The function is motivated by Python's [dict.update](https://docs.python.org/3.6/library/stdtypes.html#dict.update)
+function.
+
+## Iterator invalidation
+
+For [`ordered_json`](../ordered_json.md), adding a value to an object can yield a reallocation, in which case all
+iterators (including the `end()` iterator) and all references to the elements are invalidated.
+
+## Parameters
+
+`j` (in)
+:   JSON object to read values from
+
+`merge_objects` (in)
+:   when `#!c true`, existing keys are not overwritten, but contents of objects are merged recursively (default:
+    `#!c false`)
+
+`first` (in)
+:   begin of the range of elements to insert
+
+`last` (in)
+:   end of the range of elements to insert
+
+## Exceptions
+
+1. The function can throw the following exceptions:
+    - Throws [`type_error.312`](../../home/exceptions.md#jsonexceptiontype_error312) if called on JSON values other than
+      objects; example: `"cannot use update() with string"`
+2. The function can throw the following exceptions:
+    - Throws [`type_error.312`](../../home/exceptions.md#jsonexceptiontype_error312) if called on JSON values other than
+      objects; example: `"cannot use update() with string"`
+    - Throws [`invalid_iterator.202`](../../home/exceptions.md#jsonexceptioninvalid_iterator202) if called on an
+      iterator which does not belong to the current JSON value; example: `"iterator does not fit current value"`
+    - Throws [`invalid_iterator.210`](../../home/exceptions.md#jsonexceptioninvalid_iterator210) if `first` and `last`
+      do not belong to the same JSON value; example: `"iterators do not fit"`
+
+## Complexity
+
+1. O(N*log(size() + N)), where N is the number of elements to insert.
+2. O(N*log(size() + N)), where N is the number of elements to insert.
+
+## Examples
+
+??? example
+
+    The example shows how `update()` is used.
+    
+    ```cpp
+    --8<-- "examples/update.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/update.output"
+    ```
+
+??? example
+
+    The example shows how `update()` is used.
+    
+    ```cpp
+    --8<-- "examples/update__range.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/update__range.output"
+    ```
+
+??? example
+
+    One common use case for this function is the handling of user settings. Assume your application can be configured in
+    some aspects:
+
+    ```json
+    {
+        "color": "red",
+        "active": true,
+        "name": {"de": "Maus", "en": "mouse"}
+    }
+    ```
+
+    The user may override the default settings selectively:
+
+    ```json
+    {
+        "color": "blue",
+        "name": {"es": "ratón"},
+    }
+    ```
+
+    Then `update` manages the merging of default settings and user settings:
+ 
+    ```cpp
+    auto user_settings = json::parse("config.json");
+    auto effective_settings = get_default_settings();
+    effective_settings.update(user_settings);
+    ```
+    
+    Now `effective_settings` contains the default settings, but those keys set by the user are overwritten:
+
+    ```json
+    {
+        "color": "blue",
+        "active": true,
+        "name": {"es": "ratón"}
+    }
+    ```
+
+    Note existing keys were just overwritten. To merge objects, `merge_objects` setting should be set to `#!c true`:
+    
+    ```cpp
+    auto user_settings = json::parse("config.json");
+    auto effective_settings = get_default_settings();
+    effective_settings.update(user_settings, true);
+    ```
+
+    ```json
+    {
+        "color": "blue",
+        "active": true,
+        "name": {"de": "Maus", "en": "mouse", "es": "ratón"}
+    }
+    ```
+
+## Version history
+
+- Added in version 3.0.0.
+- Added `merge_objects` parameter in 3.10.5.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/value.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/value.md
new file mode 100644
index 00000000..edb5406b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/value.md
@@ -0,0 +1,159 @@
+# <small>nlohmann::basic_json::</small>value
+
+```cpp
+// (1)
+template<class ValueType>
+ValueType value(const typename object_t::key_type& key,
+                ValueType&& default_value) const;
+
+// (2)
+template<class ValueType, class KeyType>
+ValueType value(KeyType&& key,
+                ValueType&& default_value) const;
+
+// (3)
+template<class ValueType>
+ValueType value(const json_pointer& ptr,
+                const ValueType& default_value) const;
+```
+
+1. Returns either a copy of an object's element at the specified key `key` or a given default value if no element with
+   key `key` exists.
+   
+    The function is basically equivalent to executing
+    ```cpp
+    try {
+       return at(key);
+    } catch(out_of_range) {
+       return default_value;
+    }
+    ```
+
+2. See 1. This overload is only available if `KeyType` is comparable with `#!cpp typename object_t::key_type` and
+   `#!cpp typename object_comparator_t::is_transparent` denotes a type.
+
+3. Returns either a copy of an object's element at the specified JSON pointer `ptr` or a given default value if no value
+   at `ptr` exists.
+   
+    The function is basically equivalent to executing
+    ```cpp
+    try {
+       return at(ptr);
+    } catch(out_of_range) {
+       return default_value;
+    }
+    ```
+
+!!! note "Differences to `at` and `operator[]`"
+
+    - Unlike [`at`](at.md), this function does not throw if the given `key`/`ptr` was not found.
+    - Unlike [`operator[]`](operator[].md), this function does not implicitly add an element to the position defined by
+     `key`/`ptr` key. This function is furthermore also applicable to const objects.
+
+## Template parameters
+
+`KeyType`
+:   A type for an object key other than [`json_pointer`](../json_pointer/index.md) that is comparable with
+    [`string_t`](string_t.md) using  [`object_comparator_t`](object_comparator_t.md).
+    This can also be a string view (C++17).
+`ValueType` 
+:   type compatible to JSON values, for instance `#!cpp int` for JSON integer numbers, `#!cpp bool` for JSON booleans,
+    or `#!cpp std::vector` types for JSON arrays. Note the type of the expected value at `key`/`ptr` and the default
+    value `default_value` must be compatible.
+
+## Parameters
+
+`key` (in)
+:   key of the element to access
+
+`default_value` (in)
+:   the value to return if `key`/`ptr` found no value
+
+`ptr` (in)
+:   a JSON pointer to the element to access
+
+## Return value
+
+1. copy of the element at key `key` or `default_value` if `key` is not found
+2. copy of the element at key `key` or `default_value` if `key` is not found
+3. copy of the element at JSON Pointer `ptr` or `default_value` if no value for `ptr` is found
+
+## Exception safety
+
+Strong guarantee: if an exception is thrown, there are no
+changes to any JSON value.
+
+## Exceptions
+
+1. The function can throw the following exceptions:
+    - Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if `default_value` does not match
+      the type of the value at `key`
+    - Throws [`type_error.306`](../../home/exceptions.md#jsonexceptiontype_error306) if the JSON value is not an object;
+      in that case, using `value()` with a key makes no sense.
+2. See 1.
+3. The function can throw the following exceptions:
+    - Throws [`type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302) if `default_value` does not match
+      the type of the value at `ptr`
+    - Throws [`type_error.306`](../../home/exceptions.md#jsonexceptiontype_error306) if the JSON value is not an object;
+      in that case, using `value()` with a key makes no sense.
+
+## Complexity
+
+1. Logarithmic in the size of the container.
+2. Logarithmic in the size of the container.
+3. Logarithmic in the size of the container.
+
+## Examples
+
+??? example "Example: (1) access specified object element with default value"
+
+    The example below shows how object elements can be queried with a default value.
+    
+    ```cpp
+    --8<-- "examples/value__object_t_key_type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/value__object_t_key_type.output"
+    ```
+
+??? example "Example: (2) access specified object element using string_view with default value"
+
+    The example below shows how object elements can be queried with a default value.
+    
+    ```cpp
+    --8<-- "examples/value__keytype.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/value__keytype.c++17.output"
+    ```
+
+??? example "Example: (3) access specified object element via JSON Pointer with default value"
+
+    The example below shows how object elements can be queried with a default value.
+    
+    ```cpp
+    --8<-- "examples/value__json_ptr.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/value__json_ptr.output"
+    ```
+
+## See also
+
+- see [`at`](at.md) for access by reference with range checking
+- see [`operator[]`](operator%5B%5D.md) for unchecked access by reference
+
+## Version history
+
+1. Added in version 1.0.0. Changed parameter `default_value` type from `const ValueType&` to `ValueType&&` in version 3.11.0.
+2. Added in version 3.11.0. Made `ValueType` the first template parameter in version 3.11.2.
+3. Added in version 2.0.2.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/value_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/value_t.md
new file mode 100644
index 00000000..1505e02d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/value_t.md
@@ -0,0 +1,81 @@
+# <small>nlohmann::basic_json::</small>value_t
+
+```cpp
+enum class value_t : std::uint8_t {
+    null,
+    object,
+    array,
+    string,
+    boolean,
+    number_integer,
+    number_unsigned,
+    number_float,
+    binary,
+    discarded
+};
+```
+
+This enumeration collects the different JSON types. It is internally used to distinguish the stored values, and the
+functions [`is_null`](is_null.md), [`is_object`](is_object.md), [`is_array`](is_array.md), [`is_string`](is_string.md),
+[`is_boolean`](is_boolean.md), [`is_number`](is_number.md) (with [`is_number_integer`](is_number_integer.md),
+[`is_number_unsigned`](is_number_unsigned.md), and [`is_number_float`](is_number_float.md)),
+[`is_discarded`](is_discarded.md), [`is_binary`](is_binary.md), [`is_primitive`](is_primitive.md), and
+[`is_structured`](is_structured.md) rely on it.
+
+## Notes
+
+!!! note "Ordering"
+
+    The order of types is as follows:
+
+    1. `null`
+    2. `boolean`
+    3. `number_integer`, `number_unsigned`, `number_float`
+    4. `object`
+    5. `array`
+    6. `string`
+    7. `binary`
+
+    `discarded` is unordered.
+
+!!! note "Types of numbers"
+
+    There are three enumerators for numbers (`number_integer`, `number_unsigned`, and `number_float`) to distinguish
+    between different types of numbers:
+
+      - [`number_unsigned_t`](number_unsigned_t.md) for unsigned integers
+      - [`number_integer_t`](number_integer_t.md) for signed integers
+      - [`number_float_t`](number_float_t.md) for floating-point numbers or to approximate integers which do not fit
+        into the limits of their respective type
+
+!!! warning "Comparison operators"
+
+    `operator<` and `operator<=>` (since C++20) are overloaded and compare according to the ordering described above.
+    Until C++20 all other relational and equality operators yield results according to the integer value of each
+    enumerator. Since C++20 some compilers consider the _rewritten candidates_ generated from `operator<=>` during
+    overload resolution, while others do not. For predictable and portable behavior use:
+
+      - `operator<` or `operator<=>` when wanting to compare according to the order described above
+      - `operator==` or `operator!=` when wanting to compare according to each enumerators integer value
+
+## Examples
+
+??? example
+
+    The following code how `type()` queries the `value_t` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/type.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/type.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Added unsigned integer type in version 2.0.0.
+- Added binary type in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/~basic_json.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/~basic_json.md
new file mode 100644
index 00000000..64e94400
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/basic_json/~basic_json.md
@@ -0,0 +1,21 @@
+# <small>nlohmann::basic_json::</small>~basic_json
+
+```cpp
+~basic_json() noexcept;
+```
+
+Destroys the JSON value and frees all allocated memory.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Linear.
+
+<!-- NOLINT Examples -->
+
+## Version history
+
+- Added in version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/byte_container_with_subtype.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/byte_container_with_subtype.md
new file mode 100644
index 00000000..9913a9b5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/byte_container_with_subtype.md
@@ -0,0 +1,46 @@
+# <small>nlohmann::byte_container_with_subtype::</small>byte_container_with_subtype
+
+```cpp
+// (1)
+byte_container_with_subtype();
+
+// (2)
+byte_container_with_subtype(const container_type& container);
+byte_container_with_subtype(container_type&& container);
+
+// (3)
+byte_container_with_subtype(const container_type& container, subtype_type subtype);
+byte_container_with_subtype(container_type&& container, subtype_type subtype);
+```
+
+1. Create empty binary container without subtype.
+2. Create binary container without subtype.
+3. Create binary container with subtype.
+
+## Parameters
+
+`container` (in)
+:   binary container
+
+`subtype` (in)
+:   subtype
+
+## Examples
+
+??? example
+
+    The example below demonstrates how byte containers can be created.
+
+    ```cpp
+    --8<-- "examples/byte_container_with_subtype__byte_container_with_subtype.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/byte_container_with_subtype__byte_container_with_subtype.output"
+    ```
+
+## Version history
+
+Since version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/clear_subtype.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/clear_subtype.md
new file mode 100644
index 00000000..c62dead3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/clear_subtype.md
@@ -0,0 +1,36 @@
+# <small>nlohmann::byte_container_with_subtype::</small>clear_subtype
+
+```cpp
+void clear_subtype() noexcept;
+```
+
+Clears the binary subtype and flags the value as not having a subtype, which has implications for serialization; for
+instance MessagePack will prefer the bin family over the ext family.
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The example below demonstrates how `clear_subtype` can remove subtypes.
+
+    ```cpp
+    --8<-- "examples/byte_container_with_subtype__clear_subtype.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/byte_container_with_subtype__clear_subtype.output"
+    ```
+
+## Version history
+
+Since version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/has_subtype.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/has_subtype.md
new file mode 100644
index 00000000..e06286e2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/has_subtype.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::byte_container_with_subtype::</small>has_subtype
+
+```cpp
+constexpr bool has_subtype() const noexcept;
+```
+
+Returns whether the value has a subtype.
+
+## Return value
+
+whether the value has a subtype
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The example below demonstrates how `has_subtype` can check whether a subtype was set.
+
+    ```cpp
+    --8<-- "examples/byte_container_with_subtype__has_subtype.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/byte_container_with_subtype__has_subtype.output"
+    ```
+
+## Version history
+
+Since version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/index.md
new file mode 100644
index 00000000..277fffa3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/index.md
@@ -0,0 +1,35 @@
+# <small>nlohmann::</small>byte_container_with_subtype
+
+```cpp
+template<typename BinaryType>
+class byte_container_with_subtype : public BinaryType;
+```
+
+This type extends the template parameter `BinaryType` provided to [`basic_json`](../basic_json/index.md) with a subtype
+used by BSON and MessagePack. This type exists so that the user does not have to specify a type themselves with a
+specific naming scheme in  order to override the binary type.
+
+## Template parameters
+
+`BinaryType`
+:   container to store bytes (`#!cpp std::vector<std::uint8_t>` by default)
+
+## Member types
+
+- **container_type** - the type of the underlying container (`BinaryType`)
+- **subtype_type** - the type of the subtype (`#!cpp std::uint64_t`)
+
+## Member functions
+
+- [(constructor)](byte_container_with_subtype.md)
+- **operator==** - comparison: equal
+- **operator!=** - comparison: not equal
+- [**set_subtype**](subtype.md) - sets the binary subtype
+- [**subtype**](subtype.md) - return the binary subtype
+- [**has_subtype**](has_subtype.md) - return whether the value has a subtype
+- [**clear_subtype**](clear_subtype.md) - clears the binary subtype
+
+## Version history
+
+- Added in version 3.8.0.
+- Changed type of subtypes to `#!cpp std::uint64_t` in 3.10.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/set_subtype.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/set_subtype.md
new file mode 100644
index 00000000..cf21732b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/set_subtype.md
@@ -0,0 +1,41 @@
+# <small>nlohmann::byte_container_with_subtype::</small>set_subtype
+
+```cpp
+void set_subtype(subtype_type subtype) noexcept;
+```
+
+Sets the binary subtype of the value, also flags a binary JSON value as having a subtype, which has implications for
+serialization.
+
+## Parameters
+
+`subtype` (in)
+:   subtype to set
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The example below demonstrates how a subtype can be set with `set_subtype`.
+
+    ```cpp
+    --8<-- "examples/byte_container_with_subtype__set_subtype.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/byte_container_with_subtype__set_subtype.output"
+    ```
+
+## Version history
+
+Since version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/subtype.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/subtype.md
new file mode 100644
index 00000000..389241a7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/byte_container_with_subtype/subtype.md
@@ -0,0 +1,42 @@
+# <small>nlohmann::byte_container_with_subtype::</small>subtype
+
+```cpp
+constexpr subtype_type subtype() const noexcept;
+```
+
+Returns the numerical subtype of the value if it has a subtype. If it does not have a subtype, this function will return
+`subtype_type(-1)` as a sentinel value.
+
+## Return value
+
+the numerical subtype of the binary value, or `subtype_type(-1)` if no subtype is set
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The example below demonstrates how the subtype can be retrieved with `subtype`. Note how `subtype_type(-1)` is
+    returned for container `c1`.
+
+    ```cpp
+    --8<-- "examples/byte_container_with_subtype__subtype.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/byte_container_with_subtype__subtype.output"
+    ```
+
+## Version history
+
+- Added in version 3.8.0
+- Fixed return value to properly return `subtype_type(-1)` as documented in version 3.10.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json.md
new file mode 100644
index 00000000..36edcc2c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json.md
@@ -0,0 +1,28 @@
+# <small>nlohmann::</small>json
+
+```cpp
+using json = basic_json<>;
+```
+
+This type is the default specialization of the [basic_json](basic_json/index.md) class which uses the standard template
+types.
+
+## Examples
+
+??? example
+
+    The example below demonstrates how to use the type `nlohmann::json`.
+
+    ```cpp
+    --8<-- "examples/README.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/README.output"
+    ```
+
+## Version history
+
+Since version 1.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/back.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/back.md
new file mode 100644
index 00000000..240bc6e1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/back.md
@@ -0,0 +1,40 @@
+# <small>nlohmann::json_pointer::</small>back
+
+```cpp
+const string_t& back() const;
+```
+
+Return last reference token.
+
+## Return value
+
+Last reference token.
+
+## Exceptions
+
+Throws [out_of_range.405](../../home/exceptions.md#jsonexceptionout_of_range405) if JSON pointer has no parent.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The example shows the usage of `back`.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__back.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__back.output"
+    ```
+
+## Version history
+
+- Added in version 3.6.0.
+- Changed return type to `string_t` in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/empty.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/empty.md
new file mode 100644
index 00000000..346364ad
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/empty.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::json_pointer::</small>empty
+
+```cpp
+bool empty() const noexcept;
+```
+
+Return whether pointer points to the root document.
+
+## Return value
+
+`#!cpp true` iff the JSON pointer points to the root document.
+
+## Exception safety
+
+No-throw guarantee: this function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The example shows the result of `empty` for different JSON Pointers.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__empty.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__empty.output"
+    ```
+
+## Version history
+
+Added in version 3.6.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/index.md
new file mode 100644
index 00000000..22e24640
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/index.md
@@ -0,0 +1,52 @@
+# <small>nlohmann::</small>json_pointer
+
+```cpp
+template<typename RefStringType>
+class json_pointer;
+```
+
+A JSON pointer defines a string syntax for identifying a specific value within a JSON document. It can be used with
+functions [`at`](../basic_json/at.md) and [`operator[]`](../basic_json/operator%5B%5D.md). Furthermore, JSON pointers
+are the base for JSON patches.
+
+## Template parameters
+
+`RefStringType`
+:   the string type used for the reference tokens making up the JSON pointer
+
+!!! warning "Deprecation"
+
+    For backwards compatibility `RefStringType` may also be a specialization of [`basic_json`](../basic_json/index.md)
+    in which case `string_t` will be deduced as [`basic_json::string_t`](../basic_json/string_t.md). This feature is
+    deprecated and may be removed in a future major version.
+
+## Member types
+
+- [**string_t**](string_t.md) - the string type used for the reference tokens
+
+## Member functions
+
+- [(constructor)](json_pointer.md)
+- [**to_string**](to_string.md) - return a string representation of the JSON pointer
+- [**operator string_t**](operator_string_t.md) - return a string representation of the JSON pointer
+- [**operator==**](operator_eq.md) - compare: equal
+- [**operator!=**](operator_ne.md) - compare: not equal
+- [**operator/=**](operator_slasheq.md) - append to the end of the JSON pointer
+- [**operator/**](operator_slash.md) - create JSON Pointer by appending
+- [**parent_pointer**](parent_pointer.md) - returns the parent of this JSON pointer
+- [**pop_back**](pop_back.md) - remove last reference token
+- [**back**](back.md) - return last reference token
+- [**push_back**](push_back.md) - append an unescaped token at the end of the pointer
+- [**empty**](empty.md) - return whether pointer points to the root document
+
+## Literals
+
+- [**operator""_json_pointer**](../operator_literal_json_pointer.md) - user-defined string literal for JSON pointers
+## See also
+
+- [RFC 6901](https://datatracker.ietf.org/doc/html/rfc6901)
+
+## Version history
+
+- Added in version 2.0.0.
+- Changed template parameter from `basic_json` to string type in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/json_pointer.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/json_pointer.md
new file mode 100644
index 00000000..5e7057fc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/json_pointer.md
@@ -0,0 +1,41 @@
+# <small>nlohmann::json_pointer::</small>json_pointer
+
+```cpp
+explicit json_pointer(const string_t& s = "");
+```
+
+Create a JSON pointer according to the syntax described in
+[Section 3 of RFC6901](https://tools.ietf.org/html/rfc6901#section-3).
+
+## Parameters
+
+`s` (in)
+:    string representing the JSON pointer; if omitted, the empty string is assumed which references the whole JSON value
+
+## Exceptions
+
+- Throws [parse_error.107](../../home/exceptions.md#jsonexceptionparse_error107) if the given JSON pointer `s` is 
+  nonempty and does not begin with a slash (`/`); see example below.
+- Throws [parse_error.108](../../home/exceptions.md#jsonexceptionparse_error108) if a tilde (`~`) in the given JSON
+  pointer `s` is not followed by `0` (representing `~`) or `1` (representing `/`); see example below.
+
+## Examples
+
+??? example
+
+    The example shows the construction several valid JSON pointers as well as the exceptional behavior.
+     
+    ```cpp
+    --8<-- "examples/json_pointer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer.output"
+    ```
+
+## Version history
+
+- Added in version 2.0.0.
+- Changed type of `s` to `string_t` in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_eq.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_eq.md
new file mode 100644
index 00000000..807ae1d0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_eq.md
@@ -0,0 +1,113 @@
+# <small>nlohmann::json_pointer::</small>operator==
+
+```cpp
+// until C++20
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+bool operator==(
+    const json_pointer<RefStringTypeLhs>& lhs,
+    const json_pointer<RefStringTypeRhs>& rhs) noexcept;            // (1)
+
+template<typename RefStringTypeLhs, typename StringType>
+bool operator==(
+    const json_pointer<RefStringTypeLhs>& lhs,
+    const StringType& rhs);                                         // (2)
+
+template<typename RefStringTypeRhs, typename StringType>
+bool operator==(
+    const StringType& lhs,
+    const json_pointer<RefStringTypeRhs>& rhs);                     // (2)
+
+// since C++20
+class json_pointer {
+    template<typename RefStringTypeRhs>
+    bool operator==(
+        const json_pointer<RefStringTypeRhs>& rhs) const noexcept;  // (1)
+
+    bool operator==(const string_t& rhs) const;                     // (2)
+};
+```
+
+1. Compares two JSON pointers for equality by comparing their reference tokens.
+
+2. Compares a JSON pointer and a string or a string and a JSON pointer for equality by converting the string to a JSON
+   pointer and comparing the JSON pointers according to 1.
+
+## Template parameters
+
+`RefStringTypeLhs`, `RefStringTypeRhs`
+:   the string type of the left-hand side or right-hand side JSON pointer, respectively
+
+`StringType`
+:   the string type derived from the `json_pointer` operand ([`json_pointer::string_t`](string_t.md))
+
+## Parameters
+
+`lhs` (in)
+:   first value to consider
+
+`rhs` (in)
+:   second value to consider
+
+## Return value
+
+whether the values `lhs`/`*this` and `rhs` are equal
+
+## Exception safety
+
+1. No-throw guarantee: this function never throws exceptions.
+2. Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+1. (none)
+2. The function can throw the following exceptions:
+   - Throws [parse_error.107](../../home/exceptions.md#jsonexceptionparse_error107) if the given JSON pointer `s` is
+     nonempty and does not begin with a slash (`/`); see example below.
+   - Throws [parse_error.108](../../home/exceptions.md#jsonexceptionparse_error108) if a tilde (`~`) in the given JSON
+     pointer `s` is not followed by `0` (representing `~`) or `1` (representing `/`); see example below.
+
+## Complexity
+
+Constant if `lhs` and `rhs` differ in the number of reference tokens, otherwise linear in the number of reference
+tokens.
+
+## Notes
+
+!!! warning "Deprecation"
+
+    Overload 2 is deprecated and will be removed in a future major version release.
+
+## Examples
+
+??? example "Example: (1) Comparing JSON pointers"
+
+    The example demonstrates comparing JSON pointers.
+        
+    ```cpp
+    --8<-- "examples/json_pointer__operator__equal.cpp"
+    ```
+    
+    Output:
+    
+    ```
+    --8<-- "examples/json_pointer__operator__equal.output"
+    ```
+
+??? example "Example: (2) Comparing JSON pointers and strings"
+
+    The example demonstrates comparing JSON pointers and strings, and when doing so may raise an exception.
+        
+    ```cpp
+    --8<-- "examples/json_pointer__operator__equal_stringtype.cpp"
+    ```
+    
+    Output:
+    
+    ```
+    --8<-- "examples/json_pointer__operator__equal_stringtype.output"
+    ```
+
+## Version history
+
+1. Added in version 2.1.0. Added C++20 member functions in version 3.11.2.
+2. Added for backward compatibility and deprecated in version 3.11.2.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_ne.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_ne.md
new file mode 100644
index 00000000..1f3e3247
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_ne.md
@@ -0,0 +1,109 @@
+# <small>nlohmann::json_pointer::</small>operator!=
+
+```cpp
+// until C++20
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+bool operator!=(
+    const json_pointer<RefStringTypeLhs>& lhs,
+    const json_pointer<RefStringTypeRhs>& rhs) noexcept;  // (1)
+
+template<typename RefStringTypeLhs, typename StringType>
+bool operator!=(
+    const json_pointer<RefStringTypeLhs>& lhs,
+    const StringType& rhs);                               // (2)
+
+template<typename RefStringTypeRhs, typename StringType>
+bool operator!=(
+    const StringType& lhs,
+    const json_pointer<RefStringTypeRhs>& rhs);           // (2)
+```
+
+1. Compares two JSON pointers for inequality by comparing their reference tokens.
+
+2. Compares a JSON pointer and a string or a string and a JSON pointer for inequality by converting the string to a
+   JSON pointer and comparing the JSON pointers according to 1.
+
+## Template parameters
+
+`RefStringTypeLhs`, `RefStringTypeRhs`
+:   the string type of the left-hand side or right-hand side JSON pointer, respectively
+
+`StringType`
+:   the string type derived from the `json_pointer` operand ([`json_pointer::string_t`](string_t.md))
+
+## Parameters
+
+`lhs` (in)
+:   first value to consider
+
+`rhs` (in)
+:   second value to consider
+
+## Return value
+
+whether the values `lhs`/`*this` and `rhs` are not equal
+
+## Exception safety
+
+1. No-throw guarantee: this function never throws exceptions.
+2. Strong exception safety: if an exception occurs, the original value stays intact.
+
+## Exceptions
+
+1. (none)
+2. The function can throw the following exceptions:
+   - Throws [parse_error.107](../../home/exceptions.md#jsonexceptionparse_error107) if the given JSON pointer `s` is
+     nonempty and does not begin with a slash (`/`); see example below.
+   - Throws [parse_error.108](../../home/exceptions.md#jsonexceptionparse_error108) if a tilde (`~`) in the given JSON
+     pointer `s` is not followed by `0` (representing `~`) or `1` (representing `/`); see example below.
+
+## Complexity
+
+Constant if `lhs` and `rhs` differ in the number of reference tokens, otherwise linear in the number of reference
+tokens.
+
+## Notes
+
+!!! note "Operator overload resolution"
+
+    Since C++20 overload resolution will consider the _rewritten candidate_ generated from
+    [`operator==`](operator_eq.md).
+
+!!! warning "Deprecation"
+
+    Overload 2 is deprecated and will be removed in a future major version release.
+
+## Examples
+
+??? example "Example: (1) Comparing JSON pointers"
+
+    The example demonstrates comparing JSON pointers.
+        
+    ```cpp
+    --8<-- "examples/json_pointer__operator__notequal.cpp"
+    ```
+    
+    Output:
+    
+    ```
+    --8<-- "examples/json_pointer__operator__notequal.output"
+    ```
+
+??? example "Example: (2) Comparing JSON pointers and strings"
+
+    The example demonstrates comparing JSON pointers and strings, and when doing so may raise an exception.
+        
+    ```cpp
+    --8<-- "examples/json_pointer__operator__notequal_stringtype.cpp"
+    ```
+    
+    Output:
+    
+    ```
+    --8<-- "examples/json_pointer__operator__notequal_stringtype.output"
+    ```
+
+## Version history
+
+1. Added in version 2.1.0.
+2. Added for backward compatibility and deprecated in version 3.11.2.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_slash.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_slash.md
new file mode 100644
index 00000000..ed77b504
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_slash.md
@@ -0,0 +1,64 @@
+# <small>nlohmann::json_pointer::</small>operator/
+
+```cpp
+// (1)
+json_pointer operator/(const json_pointer& lhs, const json_pointer& rhs);
+
+// (2)
+json_pointer operator/(const json_pointer& lhs, string_t token);
+
+// (3)
+json_pointer operator/(const json_pointer& lhs, std::size_t array_idx);
+```
+
+1. create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer
+2. create a new JSON pointer by appending the unescaped token at the end of the JSON pointer
+3. create a new JSON pointer by appending the array-index-token at the end of the JSON pointer
+
+## Parameters
+
+`lhs` (in)
+:    JSON pointer
+
+`rhs` (in)
+:    JSON pointer to append
+
+`token` (in)
+:    reference token to append
+
+`array_idx` (in)
+:    array index to append
+
+## Return value
+
+1. a new JSON pointer with `rhs` appended to `lhs`
+2. a new JSON pointer with unescaped `token` appended to `lhs`
+3. a new JSON pointer with `array_idx` appended to `lhs`
+
+## Complexity
+
+1. Linear in the length of `lhs` and `rhs`.
+2. Linear in the length of `lhs`.
+3. Linear in the length of `lhs`.
+
+## Examples
+
+??? example
+
+    The example shows the usage of `operator/`.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__operator_add_binary.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__operator_add_binary.output"
+    ```
+
+## Version history
+
+1. Added in version 3.6.0.
+2. Added in version 3.6.0. Changed type of `token` to `string_t` in version 3.11.0.
+3. Added in version 3.6.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_slasheq.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_slasheq.md
new file mode 100644
index 00000000..3518557d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_slasheq.md
@@ -0,0 +1,61 @@
+# <small>nlohmann::json_pointer::</small>operator/=
+
+```cpp
+// (1)
+json_pointer& operator/=(const json_pointer& ptr);
+
+// (2)
+json_pointer& operator/=(string_t token);
+
+// (3)
+json_pointer& operator/=(std::size_t array_idx)
+```
+
+1. append another JSON pointer at the end of this JSON pointer
+2. append an unescaped reference token at the end of this JSON pointer
+3. append an array index at the end of this JSON pointer
+
+## Parameters
+
+`ptr` (in)
+:    JSON pointer to append
+
+`token` (in)
+:    reference token to append
+
+`array_idx` (in)
+:    array index to append
+
+## Return value
+
+1. JSON pointer with `ptr` appended
+2. JSON pointer with `token` appended without escaping `token`
+3. JSON pointer with `array_idx` appended
+
+## Complexity
+
+1. Linear in the length of `ptr`.
+2. Amortized constant.
+3. Amortized constant.
+
+## Examples
+
+??? example
+
+    The example shows the usage of `operator/=`.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__operator_add.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__operator_add.output"
+    ```
+
+## Version history
+
+1. Added in version 3.6.0.
+2. Added in version 3.6.0. Changed type of `token` to `string_t` in version 3.11.0.
+3. Added in version 3.6.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_string_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_string_t.md
new file mode 100644
index 00000000..74105a4f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/operator_string_t.md
@@ -0,0 +1,48 @@
+# <small>nlohmann::json_pointer::</small>operator string_t
+
+```cpp
+operator string_t() const
+```
+
+Return a string representation of the JSON pointer.
+
+## Return value
+
+A string representation of the JSON pointer
+
+## Possible implementation
+
+```cpp
+operator string_t() const
+{
+    return to_string();
+}
+```
+
+## Notes
+
+!!! warning "Deprecation"
+
+    This function is deprecated in favor of [`to_string`](to_string.md) and will be removed in a future major version
+    release.
+
+## Examples
+
+??? example
+
+    The example shows how JSON Pointers can be implicitly converted to strings.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__operator_string_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__operator_string_t.output"
+    ```
+
+## Version history
+
+- Since version 2.0.0.
+- Changed type to `string_t` and deprecated in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/parent_pointer.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/parent_pointer.md
new file mode 100644
index 00000000..13987307
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/parent_pointer.md
@@ -0,0 +1,35 @@
+# <small>nlohmann::json_pointer::</small>parent_pointer
+
+```cpp
+json_pointer parent_pointer() const;
+```
+
+Returns the parent of this JSON pointer.
+
+## Return value
+
+Parent of this JSON pointer; in case this JSON pointer is the root, the root itself is returned.
+
+## Complexity
+
+Linear in the length of the JSON pointer.
+
+## Examples
+
+??? example
+
+    The example shows the result of `parent_pointer` for different JSON Pointers.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__parent_pointer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__parent_pointer.output"
+    ```
+
+## Version history
+
+Added in version 3.6.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/pop_back.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/pop_back.md
new file mode 100644
index 00000000..3c79f363
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/pop_back.md
@@ -0,0 +1,35 @@
+# <small>nlohmann::json_pointer::</small>pop_back
+
+```cpp
+void pop_back();
+```
+
+Remove last reference token.
+
+## Exceptions
+
+Throws [out_of_range.405](../../home/exceptions.md#jsonexceptionout_of_range405) if JSON pointer has no parent.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The example shows the usage of `pop_back`.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__pop_back.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__pop_back.output"
+    ```
+
+## Version history
+
+Added in version 3.6.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/push_back.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/push_back.md
new file mode 100644
index 00000000..c1c19cb8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/push_back.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::json_pointer::</small>push_back
+
+```cpp
+void push_back(const string_t& token);
+
+void push_back(string_t&& token);
+```
+
+Append an unescaped token at the end of the reference pointer.
+
+## Parameters
+
+`token` (in)
+:   token to add
+
+## Complexity
+
+Amortized constant.
+
+## Examples
+
+??? example
+
+    The example shows the result of `push_back` for different JSON Pointers.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__push_back.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__push_back.output"
+    ```
+
+## Version history
+
+- Added in version 3.6.0.
+- Changed type of `token` to `string_t` in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/string_t.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/string_t.md
new file mode 100644
index 00000000..c8527bc9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/string_t.md
@@ -0,0 +1,28 @@
+# <small>nlohmann::json_pointer::</small>string_t
+```cpp
+using string_t = RefStringType;
+```
+
+The string type used for the reference tokens making up the JSON pointer.
+
+See [`basic_json::string_t`](../basic_json/string_t.md) for more information.
+
+## Examples
+
+??? example
+
+    The example shows the type `string_t` and its relation to `basic_json::string_t`.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__string_t.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__string_t.output"
+    ```
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/to_string.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/to_string.md
new file mode 100644
index 00000000..fae3abe5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_pointer/to_string.md
@@ -0,0 +1,40 @@
+# <small>nlohmann::json_pointer::</small>to_string
+
+```cpp
+string_t to_string() const;
+```
+
+Return a string representation of the JSON pointer.
+
+## Return value
+
+A string representation of the JSON pointer
+
+## Notes
+
+For each JSON pointer `ptr`, it holds:
+
+```cpp
+ptr == json_pointer(ptr.to_string());
+```
+
+## Examples
+
+??? example
+
+    The example shows the result of `to_string`.
+     
+    ```cpp
+    --8<-- "examples/json_pointer__to_string.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/json_pointer__to_string.output"
+    ```
+
+## Version history
+
+- Since version 2.0.0.
+- Changed return type to `string_t` in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/binary.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/binary.md
new file mode 100644
index 00000000..fc0980e2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/binary.md
@@ -0,0 +1,40 @@
+# <small>nlohmann::json_sax::</small>binary
+
+```cpp
+virtual bool binary(binary_t& val) = 0;
+```
+
+A binary value was read.
+
+## Parameters
+
+`val` (in)
+:   binary value
+
+## Return value
+
+Whether parsing should proceed.
+
+## Notes
+
+It is safe to move the passed binary value.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse__binary.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse__binary.output"
+    ```
+
+## Version history
+
+- Added in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/boolean.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/boolean.md
new file mode 100644
index 00000000..fdf29456
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/boolean.md
@@ -0,0 +1,36 @@
+# <small>nlohmann::json_sax::</small>boolean
+
+```cpp
+virtual bool boolean(bool val) = 0;
+```
+
+A boolean value was read.
+
+## Parameters
+
+`val` (in)
+:   boolean value
+
+## Return value
+
+Whether parsing should proceed.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/end_array.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/end_array.md
new file mode 100644
index 00000000..9c12e40a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/end_array.md
@@ -0,0 +1,31 @@
+# <small>nlohmann::json_sax::</small>end_array
+
+```cpp
+virtual bool end_array() = 0;
+```
+
+The end of an array was read.
+
+## Return value
+
+Whether parsing should proceed.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/end_object.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/end_object.md
new file mode 100644
index 00000000..601c94a4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/end_object.md
@@ -0,0 +1,31 @@
+# <small>nlohmann::json_sax::</small>end_object
+
+```cpp
+virtual bool end_object() = 0;
+```
+
+The end of an object was read.
+
+## Return value
+
+Whether parsing should proceed.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/index.md
new file mode 100644
index 00000000..f63e85c9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/index.md
@@ -0,0 +1,44 @@
+# <small>nlohmann::</small>json_sax
+
+```cpp
+template<typename BasicJsonType>
+struct json_sax;
+```
+
+This class describes the SAX interface used by [sax_parse](../basic_json/sax_parse.md). Each function is called in
+different situations while the input is parsed. The boolean return value informs the parser whether to continue
+processing the input.
+
+## Template parameters
+
+`BasicJsonType`
+:   a specialization of [`basic_json`](../basic_json/index.md)
+
+## Member types
+
+- [**number_integer_t**](../basic_json/number_integer_t.md) - `BasicJsonType`'s type for numbers (integer)
+- [**number_unsigned_t**](../basic_json/number_unsigned_t.md) - `BasicJsonType`'s  type for numbers (unsigned)
+- [**number_float_t**](../basic_json/number_float_t.md) - `BasicJsonType`'s type for numbers (floating-point)
+- [**string_t**](../basic_json/string_t.md) - `BasicJsonType`'s type for strings
+- [**binary_t**](../basic_json/binary_t.md) - `BasicJsonType`'s type for binary arrays
+
+## Member functions
+
+- [**binary**](binary.md) (_virtual_) - a binary value was read
+- [**boolean**](boolean.md) (_virtual_) - a boolean value was read
+- [**end_array**](end_array.md) (_virtual_) - the end of an array was read
+- [**end_object**](end_object.md) (_virtual_) - the end of an object was read
+- [**key**](key.md) (_virtual_) - an object key was read
+- [**null**](null.md) (_virtual_) - a null value was read
+- [**number_float**](number_float.md) (_virtual_) - a floating-point number was read
+- [**number_integer**](number_integer.md) (_virtual_) - an integer number was read
+- [**number_unsigned**](number_unsigned.md) (_virtual_) - an unsigned integer number was read
+- [**parse_error**](parse_error.md) (_virtual_) - a parse error occurred
+- [**start_array**](start_array.md) (_virtual_) - the beginning of an array was read
+- [**start_object**](start_object.md) (_virtual_) - the beginning of an object was read
+- [**string**](string.md) (_virtual_) - a string value was read
+
+## Version history
+
+- Added in version 3.2.0.
+- Support for binary values (`binary_t`, `binary`) added in version 3.8.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/key.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/key.md
new file mode 100644
index 00000000..31fd6c1d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/key.md
@@ -0,0 +1,40 @@
+# <small>nlohmann::json_sax::</small>key
+
+```cpp
+virtual bool key(string_t& val) = 0;
+```
+
+An object key was read.
+
+## Parameters
+
+`val` (in)
+:   object key
+
+## Return value
+
+Whether parsing should proceed.
+
+## Notes
+
+It is safe to move the passed object key value.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/null.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/null.md
new file mode 100644
index 00000000..9354ede6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/null.md
@@ -0,0 +1,31 @@
+# <small>nlohmann::json_sax::</small>null
+
+```cpp
+virtual bool null() = 0;
+```
+
+A null value was read.
+
+## Return value
+
+Whether parsing should proceed.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_float.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_float.md
new file mode 100644
index 00000000..17799401
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_float.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::json_sax::</small>number_float
+
+```cpp
+virtual bool number_float(number_float_t val, const string_t& s) = 0;
+```
+
+A floating-point number was read.
+
+## Parameters
+
+`val` (in)
+:   floating-point value
+
+`s` (in)
+:   string representation of the original input
+
+## Return value
+
+Whether parsing should proceed.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_integer.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_integer.md
new file mode 100644
index 00000000..5c3cb4f3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_integer.md
@@ -0,0 +1,36 @@
+# <small>nlohmann::json_sax::</small>number_integer
+
+```cpp
+virtual bool number_integer(number_integer_t val) = 0;
+```
+
+An integer number was read.
+
+## Parameters
+
+`val` (in)
+:   integer value
+
+## Return value
+
+Whether parsing should proceed.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_unsigned.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_unsigned.md
new file mode 100644
index 00000000..0ac25003
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/number_unsigned.md
@@ -0,0 +1,36 @@
+# <small>nlohmann::json_sax::</small>number_unsigned
+
+```cpp
+virtual bool number_unsigned(number_unsigned_t val) = 0;
+```
+
+An unsigned integer number was read.
+
+## Parameters
+
+`val` (in)
+:   unsigned integer value
+
+## Return value
+
+Whether parsing should proceed.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/parse_error.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/parse_error.md
new file mode 100644
index 00000000..e41cb67f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/parse_error.md
@@ -0,0 +1,44 @@
+# <small>nlohmann::json_sax::</small>parse_error
+
+```cpp
+virtual bool parse_error(std::size_t position,
+                         const std::string& last_token,
+                         const detail::exception& ex) = 0;
+```
+
+A parse error occurred.
+
+## Parameters
+
+`position` (in)
+:   the position in the input where the error occurs
+
+`last_token` (in)
+:   the last read token
+
+`ex` (in)
+:   an exception object describing the error
+
+## Return value
+
+Whether parsing should proceed (**must return `#!cpp false`**).
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/start_array.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/start_array.md
new file mode 100644
index 00000000..cf2b8cf5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/start_array.md
@@ -0,0 +1,40 @@
+# <small>nlohmann::json_sax::</small>start_array
+
+```cpp
+virtual bool start_array(std::size_t elements) = 0;
+```
+
+The beginning of an array was read.
+
+## Parameters
+
+`elements` (in)
+:   number of object elements or `#!cpp -1` if unknown
+
+## Return value
+
+Whether parsing should proceed.
+
+## Notes
+
+Binary formats may report the number of elements.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/start_object.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/start_object.md
new file mode 100644
index 00000000..491815de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/start_object.md
@@ -0,0 +1,40 @@
+# <small>nlohmann::json_sax::</small>start_object
+
+```cpp
+virtual bool start_object(std::size_t elements) = 0;
+```
+
+The beginning of an object was read.
+
+## Parameters
+
+`elements` (in)
+:   number of object elements or `#!cpp -1` if unknown
+
+## Return value
+
+Whether parsing should proceed.
+
+## Notes
+
+Binary formats may report the number of elements.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/string.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/string.md
new file mode 100644
index 00000000..dcffb5f6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/json_sax/string.md
@@ -0,0 +1,40 @@
+# <small>nlohmann::json_sax::</small>string
+
+```cpp
+virtual bool string(string_t& val) = 0;
+```
+
+A string value was read.
+
+## Parameters
+
+`val` (in)
+:   string value
+
+## Return value
+
+Whether parsing should proceed.
+
+## Notes
+
+It is safe to move the passed string value.
+
+## Examples
+
+??? example
+
+    The example below shows how the SAX interface is used.
+
+    ```cpp
+    --8<-- "examples/sax_parse.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/sax_parse.output"
+    ```
+
+## Version history
+
+- Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/index.md
new file mode 100644
index 00000000..d37df592
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/index.md
@@ -0,0 +1,75 @@
+# Macros
+
+Some aspects of the library can be configured by defining preprocessor macros **before** including the `json.hpp`
+header. See also the [macro overview page](../../features/macros.md).
+
+## Runtime assertions
+
+- [**JSON_ASSERT(x)**](json_assert.md) - control behavior of runtime assertions
+
+## Exceptions
+
+- [**JSON_CATCH_USER(exception)**<br>**JSON_THROW_USER(exception)**<br>**JSON_TRY_USER**](json_throw_user.md) - control exceptions
+- [**JSON_DIAGNOSTICS**](json_diagnostics.md) - control extended diagnostics
+- [**JSON_NOEXCEPTION**](json_noexception.md) - switch off exceptions
+
+## Language support
+
+- [**JSON_HAS_CPP_11**<br>**JSON_HAS_CPP_14**<br>**JSON_HAS_CPP_17**<br>**JSON_HAS_CPP_20**](json_has_cpp_11.md) - set supported C++ standard
+- [**JSON_HAS_FILESYSTEM**<br>**JSON_HAS_EXPERIMENTAL_FILESYSTEM**](json_has_filesystem.md) - control `std::filesystem` support
+- [**JSON_HAS_RANGES**](json_has_ranges.md) - control `std::ranges` support
+- [**JSON_HAS_THREE_WAY_COMPARISON**](json_has_three_way_comparison.md) - control 3-way comparison support
+- [**JSON_NO_IO**](json_no_io.md) - switch off functions relying on certain C++ I/O headers
+- [**JSON_SKIP_UNSUPPORTED_COMPILER_CHECK**](json_skip_unsupported_compiler_check.md) - do not warn about unsupported compilers
+- [**JSON_USE_GLOBAL_UDLS**](json_use_global_udls.md) - place user-defined string literals (UDLs) into the global namespace
+
+## Library version
+
+- [**JSON_SKIP_LIBRARY_VERSION_CHECK**](json_skip_library_version_check.md) - skip library version check
+- [**NLOHMANN_JSON_VERSION_MAJOR**<br>**NLOHMANN_JSON_VERSION_MINOR**<br>**NLOHMANN_JSON_VERSION_PATCH**](nlohmann_json_version_major.md)
+  \- library version information
+
+## Library namespace
+
+- [**NLOHMANN_JSON_NAMESPACE**](nlohmann_json_namespace.md) - full name of the `nlohmann` namespace
+- [**NLOHMANN_JSON_NAMESPACE_BEGIN**<br>**NLOHMANN_JSON_NAMESPACE_END**](nlohmann_json_namespace_begin.md) - open and
+  close the library namespace
+- [**NLOHMANN_JSON_NAMESPACE_NO_VERSION**](nlohmann_json_namespace_no_version.md) - disable the version component of
+  the inline namespace
+
+## Type conversions
+
+- [**JSON_DISABLE_ENUM_SERIALIZATION**](json_disable_enum_serialization.md) - switch off default serialization/deserialization functions for enums
+- [**JSON_USE_IMPLICIT_CONVERSIONS**](json_use_implicit_conversions.md) - control implicit conversions
+
+## Comparison behavior
+
+- [**JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON**](json_use_legacy_discarded_value_comparison.md) -
+  control comparison of discarded values
+
+## Serialization/deserialization macros
+
+- Enum: [**NLOHMANN_JSON_SERIALIZE_ENUM**](nlohmann_json_serialize_enum.md)
+- Class/struct:
+    - Do you need to serialize private variables?
+        - Yes? Do you only need serialization?
+            - Yes? `NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE`
+            - No? Allow deserialization of JSON values with missing values?
+                - Yes? `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT`
+                - No? `NLOHMANN_DEFINE_TYPE_INTRUSIVE`
+        - No? Do you only need serialization?
+            - Yes? `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE`
+            - No? Allow deserialization of JSON values with missing values?
+                - Yes? `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT`
+                - No? `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`
+
+- [**NLOHMANN_DEFINE_TYPE_INTRUSIVE(type, member...)**<br>**NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(type, member...)**
+<br>**NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE(type, member...)**][DefInt]
+  \- serialization/deserialization of types _with_ access to private variables
+- [**NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(type, member...)**<br>**NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(type, member...)**
+<br>**NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(type, member...)**][DefNonInt]
+  \- serialization/deserialization of types _without_ access to private variables
+- [**NLOHMANN_JSON_SERIALIZE_ENUM(type, ...)**](nlohmann_json_serialize_enum.md) - serialization/deserialization of enum types
+
+[DefInt]: nlohmann_define_type_intrusive.md
+[DefNonInt]: nlohmann_define_type_non_intrusive.md
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_assert.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_assert.md
new file mode 100644
index 00000000..a093341a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_assert.md
@@ -0,0 +1,84 @@
+# JSON_ASSERT
+
+```cpp
+#define JSON_ASSERT(x) /* value */
+```
+
+This macro controls which code is executed for [runtime assertions](../../features/assertions.md) of the library.
+
+## Parameters
+
+`x` (in)
+:   expression of scalar type
+
+## Default definition
+
+The default value is [`#!cpp assert(x)`](https://en.cppreference.com/w/cpp/error/assert).
+
+```cpp
+#define JSON_ASSERT(x) assert(x)
+```
+
+Therefore, assertions can be switched off by defining `NDEBUG`.
+
+## Notes
+
+- The library uses numerous assertions to guarantee invariants and to abort in case of otherwise undefined behavior
+  (e.g., when calling [operator[]](../basic_json/operator%5B%5D.md) with a missing object key on a `const` object). See
+  page [runtime assertions](../../features/assertions.md) for more information.
+- Defining the macro to code that does not call `std::abort` may leave the library in an undefined state.
+- The macro is undefined outside the library.
+
+## Examples
+
+??? example "Example 1: default behavior"
+
+    The following code will trigger an assertion at runtime:
+
+    ```cpp
+    #include <nlohmann/json.hpp>
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+        const json j = {{"key", "value"}};
+        auto v = j["missing"];
+    }
+    ```
+
+    Output:
+
+    ```
+    Assertion failed: (m_value.object->find(key) != m_value.object->end()), function operator[], file json.hpp, line 2144.
+    ```
+
+??? example "Example 2: user-defined behavior"
+
+    The assertion reporting can be changed by defining `JSON_ASSERT(x)` differently.
+
+    ```cpp
+    #include <cstdio>
+    #include <cstdlib>
+    #define JSON_ASSERT(x) if(!(x)){fprintf(stderr, "assertion error in %s\n", __FUNCTION__); std::abort();}
+    
+    #include <nlohmann/json.hpp>
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+        const json j = {{"key", "value"}};
+        auto v = j["missing"];
+    }
+    ```
+
+    Output:
+
+    ```
+    assertion error in operator[]
+    ```
+
+## Version history
+
+- Added in version 3.9.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_diagnostic_positions.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_diagnostic_positions.md
new file mode 100644
index 00000000..d7d4ddd4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_diagnostic_positions.md
@@ -0,0 +1,61 @@
+# JSON_DIAGNOSTIC_POSITIONS
+
+```cpp
+#define JSON_DIAGNOSTIC_POSITIONS /* value */
+```
+
+This macro enables position diagnostics for generated JSON objects.
+
+When enabled, two new properties: `start_pos()` and `end_pos()` are added to `nlohmann::basic_json` objects and fields. `start_pos()` returns the start 
+position of that JSON object/field in the original string the object was parsed from. Likewise, `end_pos()` returns the end position of that JSON
+object/field in the original string the object was parsed from.
+
+`start_pos()` returns the first character of a given element in the original JSON string, while `end_pos()` returns the character following the last
+character. For objects and arrays, the first and last characters correspond to the opening or closing braces/brackets, respectively. For fields, the first
+and last character represent the opening and closing quotes or the first and last character of the field's numerical or predefined value
+(true/false/null), respectively.
+
+Given the above, `end_pos() - start_pos()` for an object or field provides the length of the string representation for that object or field, including the
+opening or closing braces, brackets, or quotes.
+
+`start_pos()` and `end_pos()` are only set if the JSON object was parsed using `parse()`. For all other cases, `std::string::npos` will be returned.
+
+Note that enabling this macro increases the size of every JSON value by two `std::size_t` fields and adds
+slight runtime overhead.
+
+## Default definition
+
+The default value is `0` (position diagnostics are switched off).
+
+```cpp
+#define JSON_DIAGNOSTIC_POSITIONS 0
+```
+
+When the macro is not defined, the library will define it to its default value.
+
+## Notes
+
+!!! hint "CMake option"
+
+    Diagnostic messages can also be controlled with the CMake option
+    [`JSON_Diagnostic_Positions`](../../integration/cmake.md#json_diagnostic_positions) (`OFF` by default)
+    which defines `JSON_DIAGNOSTIC_POSITIONS` accordingly.
+
+## Examples
+
+??? example "Example 1: retrieving positions"
+
+    ```cpp
+    --8<-- "examples/diagnostic_positions.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/diagnostic_positions.output"
+    ```
+
+    The output shows the start/end positions of all the objects and fields in the JSON string.
+
+## Version history
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_diagnostics.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_diagnostics.md
new file mode 100644
index 00000000..4fc0fc38
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_diagnostics.md
@@ -0,0 +1,76 @@
+# JSON_DIAGNOSTICS
+
+```cpp
+#define JSON_DIAGNOSTICS /* value */
+```
+
+This macro enables [extended diagnostics for exception messages](../../home/exceptions.md#extended-diagnostic-messages).
+Possible values are `1` to enable or `0` to disable (default).
+
+When enabled, exception messages contain a [JSON Pointer](../json_pointer/json_pointer.md) to the JSON value that
+triggered the exception. Note that enabling this macro increases the size of every JSON value by one pointer and adds
+some  runtime overhead.
+
+## Default definition
+
+The default value is `0` (extended diagnostics are switched off).
+
+```cpp
+#define JSON_DIAGNOSTICS 0
+```
+
+When the macro is not defined, the library will define it to its default value.
+
+## Notes
+
+!!! note "ABI compatibility"
+
+    As of version 3.11.0, this macro is no longer required to be defined consistently throughout a codebase to avoid
+    One Definition Rule (ODR) violations, as the value of this macro is encoded in the namespace, resulting in distinct
+    symbol names. 
+    
+    This allows different parts of a codebase to use different versions or configurations of this library without
+    causing improper behavior.
+    
+    Where possible, it is still recommended that all code define this the same way for maximum interoperability.
+
+!!! hint "CMake option"
+
+    Diagnostic messages can also be controlled with the CMake option
+    [`JSON_Diagnostics`](../../integration/cmake.md#json_diagnostics) (`OFF` by default)
+    which defines `JSON_DIAGNOSTICS` accordingly.
+
+## Examples
+
+??? example "Example 1: default behavior"
+
+    ```cpp
+    --8<-- "examples/diagnostics_standard.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/diagnostics_standard.output"
+    ```
+
+    This exception can be hard to debug if storing the value `#!c "12"` and accessing it is further apart.
+
+??? example "Example 2: extended diagnostic messages"
+
+    ```cpp
+    --8<-- "examples/diagnostics_extended.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/diagnostics_extended.output"
+    ```
+
+    Now the exception message contains a JSON Pointer `/address/housenumber` that indicates which value has the wrong type.
+
+## Version history
+
+- Added in version 3.10.0.
+- As of version 3.11.0 the definition is allowed to vary between translation units.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_disable_enum_serialization.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_disable_enum_serialization.md
new file mode 100644
index 00000000..6440e34e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_disable_enum_serialization.md
@@ -0,0 +1,152 @@
+# JSON_DISABLE_ENUM_SERIALIZATION
+
+```cpp
+#define JSON_DISABLE_ENUM_SERIALIZATION /* value */
+```
+
+When defined to `1`, default serialization and deserialization functions for enums are excluded and have to be provided
+by the user, for example, using [`NLOHMANN_JSON_SERIALIZE_ENUM`](nlohmann_json_serialize_enum.md) (see
+[arbitrary type conversions](../../features/arbitrary_types.md) for more details).
+
+Parsing or serializing an enum will result in a compiler error.
+
+This works for both unscoped and scoped enums.
+
+## Default definition
+
+The default value is `0`.
+
+```cpp
+#define JSON_DISABLE_ENUM_SERIALIZATION 0
+```
+
+## Notes
+
+!!! hint "CMake option"
+
+    Enum serialization can also be controlled with the CMake option
+    [`JSON_DisableEnumSerialization`](../../integration/cmake.md#json_disableenumserialization)
+    (`OFF` by default) which defines `JSON_DISABLE_ENUM_SERIALIZATION` accordingly.
+
+## Examples
+
+??? example "Example 1: Disabled behavior"
+
+    The code below forces the library **not** to create default serialization/deserialization functions `from_json` and `to_json`, meaning the code below
+    **does not** compile.
+
+    ```cpp
+    #define JSON_DISABLE_ENUM_SERIALIZATION 1
+    #include <nlohmann/json.hpp>
+
+    using json = nlohmann::json;
+
+    enum class Choice
+    {
+        first,
+        second,
+    };
+    
+    int main()
+    {
+        // normally invokes to_json serialization function but with JSON_DISABLE_ENUM_SERIALIZATION defined, it does not
+        const json j = Choice::first; 
+
+        // normally invokes from_json parse function but with JSON_DISABLE_ENUM_SERIALIZATION defined, it does not
+        Choice ch = j.template get<Choice>();
+    }
+    ```
+
+??? example "Example 2: Serialize enum macro"
+
+    The code below forces the library **not** to create default serialization/deserialization functions `from_json` and `to_json`, but uses
+    [`NLOHMANN_JSON_SERIALIZE_ENUM`](nlohmann_json_serialize_enum.md) to parse and serialize the enum.
+
+    ```cpp
+    #define JSON_DISABLE_ENUM_SERIALIZATION 1
+    #include <nlohmann/json.hpp>
+
+    using json = nlohmann::json;
+
+    enum class Choice
+    {
+        first,
+        second,
+    };
+
+    NLOHMANN_JSON_SERIALIZE_ENUM(Choice,
+    {
+        { Choice::first, "first" },
+        { Choice::second, "second" },
+    })
+    
+    int main()
+    {
+        // uses user-defined to_json function defined by macro
+        const json j = Choice::first; 
+
+        // uses user-defined from_json function defined by macro
+        Choice ch = j.template get<Choice>();
+    }
+    ```
+
+??? example "Example 3: User-defined serialization/deserialization functions"
+
+    The code below forces the library **not** to create default serialization/deserialization functions `from_json` and `to_json`, but uses user-defined
+    functions to parse and serialize the enum.
+
+    ```cpp
+    #define JSON_DISABLE_ENUM_SERIALIZATION 1
+    #include <nlohmann/json.hpp>
+
+    using json = nlohmann::json;
+
+    enum class Choice
+    {
+        first,
+        second,
+    };
+
+    void from_json(const json& j, Choice& ch)
+    {
+        auto value = j.template get<std::string>();
+        if (value == "first")
+        {
+            ch = Choice::first;
+        }
+        else if (value == "second")
+        {
+            ch = Choice::second;
+        }
+    }
+
+    void to_json(json& j, const Choice& ch)
+    {
+        auto value = j.template get<std::string>();
+        if (value == "first")
+        {
+            ch = Choice::first;
+        }
+        else if (value == "second")
+        {
+            ch = Choice::second;
+        }
+    }
+    
+    int main()
+    {
+        // uses user-defined to_json function
+        const json j = Choice::first; 
+
+        // uses user-defined from_json function
+        Choice ch = j.template get<Choice>();
+    }
+    ```
+
+## See also
+
+- [`NLOHMANN_JSON_SERIALIZE_ENUM`](nlohmann_json_serialize_enum.md)
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_cpp_11.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_cpp_11.md
new file mode 100644
index 00000000..f3eaa585
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_cpp_11.md
@@ -0,0 +1,41 @@
+# JSON_HAS_CPP_11, JSON_HAS_CPP_14, JSON_HAS_CPP_17, JSON_HAS_CPP_20
+
+```cpp
+#define JSON_HAS_CPP_11
+#define JSON_HAS_CPP_14
+#define JSON_HAS_CPP_17
+#define JSON_HAS_CPP_20
+```
+
+The library targets C++11, but also supports some features introduced in later C++ versions (e.g., `std::string_view`
+support for C++17). For these new features, the library implements some preprocessor checks to determine the C++
+standard. By defining any of these symbols, the internal check is overridden and the provided C++ version is
+unconditionally assumed. This can be helpful for compilers that only implement parts of the standard and would be
+detected incorrectly.
+
+## Default definition
+
+The default value is detected based on preprocessor macros such as `#!cpp __cplusplus`, `#!cpp _HAS_CXX17`, or
+`#!cpp _MSVC_LANG`.
+
+## Notes
+
+- `#!cpp JSON_HAS_CPP_11` is always defined.
+- All macros are undefined outside the library.
+
+## Examples
+
+??? example
+
+    The code below forces the library to use the C++14 standard:
+
+    ```cpp
+    #define JSON_HAS_CPP_14 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## Version history
+
+- Added in version 3.10.5.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_filesystem.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_filesystem.md
new file mode 100644
index 00000000..308aea2a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_filesystem.md
@@ -0,0 +1,43 @@
+# JSON_HAS_FILESYSTEM / JSON_HAS_EXPERIMENTAL_FILESYSTEM
+
+```cpp
+#define JSON_HAS_FILESYSTEM /* value */
+#define JSON_HAS_EXPERIMENTAL_FILESYSTEM /* value */
+```
+
+When compiling with C++17, the library provides conversions from and to
+[`std::filesystem::path`](https://en.cppreference.com/w/cpp/filesystem/path). As compiler support for filesystem is
+limited, the library tries to detect whether
+[`<filesystem>`/`std::filesystem`](https://en.cppreference.com/w/cpp/header/filesystem) (`JSON_HAS_FILESYSTEM`) or
+[`<experimental/filesystem>`/`std::experimental::filesystem`](https://en.cppreference.com/w/cpp/header/experimental/filesystem)
+(`JSON_HAS_EXPERIMENTAL_FILESYSTEM`) should be used. To override the built-in check, define `JSON_HAS_FILESYSTEM` or
+`JSON_HAS_EXPERIMENTAL_FILESYSTEM` to `1`.
+
+## Default definition
+
+The default value is detected based on the preprocessor macros `#!cpp __cpp_lib_filesystem`,
+`#!cpp __cpp_lib_experimental_filesystem`, `#!cpp __has_include(<filesystem>)`, or
+`#!cpp __has_include(<experimental/filesystem>)`.
+
+## Notes
+
+- Note that older compilers or older versions of libstd++ also require the library `stdc++fs` to be linked to for
+  filesystem support.
+- Both macros are undefined outside the library.
+
+## Examples
+
+??? example
+
+    The code below forces the library to use the header `<experimental/filesystem>`.
+
+    ```cpp
+    #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## Version history
+
+- Added in version 3.10.5.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_ranges.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_ranges.md
new file mode 100644
index 00000000..96d51052
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_ranges.md
@@ -0,0 +1,31 @@
+# JSON_HAS_RANGES
+
+```cpp
+#define JSON_HAS_RANGES /* value */
+```
+
+This macro indicates whether the standard library has any support for ranges. Implies support for concepts.
+Possible values are `1` when supported or `0` when unsupported.
+
+## Default definition
+
+The default value is detected based on the preprocessor macro `#!cpp __cpp_lib_ranges`.
+
+When the macro is not defined, the library will define it to its default value.
+
+## Examples
+
+??? example
+
+    The code below forces the library to enable support for ranges:
+
+    ```cpp
+    #define JSON_HAS_RANGES 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_static_rtti.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_static_rtti.md
new file mode 100644
index 00000000..33d0703a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_static_rtti.md
@@ -0,0 +1,31 @@
+# JSON_HAS_STATIC_RTTI
+
+```cpp
+#define JSON_HAS_STATIC_RTTI /* value */
+```
+
+This macro indicates whether the standard library has any support for RTTI (run time type information).
+Possible values are `1` when supported or `0` when unsupported.
+
+## Default definition
+
+The default value is detected based on the preprocessor macro `#!cpp _HAS_STATIC_RTTI`.
+
+When the macro is not defined, the library will define it to its default value.
+
+## Examples
+
+??? example
+
+    The code below forces the library to enable support for libraries with RTTI dependence:
+
+    ```cpp
+    #define JSON_HAS_STATIC_RTTI 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+    
+## Version history
+
+- Added in version 3.11.3.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_three_way_comparison.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_three_way_comparison.md
new file mode 100644
index 00000000..f52070eb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_has_three_way_comparison.md
@@ -0,0 +1,32 @@
+# JSON_HAS_THREE_WAY_COMPARISON
+
+```cpp
+#define JSON_HAS_THREE_WAY_COMPARISON /* value */
+```
+
+This macro indicates whether the compiler and standard library support 3-way comparison.
+Possible values are `1` when supported or `0` when unsupported.
+
+## Default definition
+
+The default value is detected based on the preprocessor macros `#!cpp __cpp_impl_three_way_comparison`
+and `#!cpp __cpp_lib_three_way_comparison`.
+
+When the macro is not defined, the library will define it to its default value.
+
+## Examples
+
+??? example
+
+    The code below forces the library to use 3-way comparison:
+
+    ```cpp
+    #define JSON_HAS_THREE_WAY_COMPARISON 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_no_io.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_no_io.md
new file mode 100644
index 00000000..ef37384a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_no_io.md
@@ -0,0 +1,35 @@
+# JSON_NO_IO
+
+```cpp
+#define JSON_NO_IO
+```
+
+When defined, headers `<cstdio>`, `<ios>`, `<iosfwd>`, `<istream>`, and `<ostream>` are not included and parse functions
+relying on these headers are excluded. This is relevant for environments where these I/O functions are disallowed for
+security reasons (e.g., Intel Software Guard Extensions (SGX)).
+
+## Default definition
+
+By default, `#!cpp JSON_NO_IO` is not defined.
+
+```cpp
+#undef JSON_NO_IO
+```
+
+## Examples
+
+??? example
+
+    The code below forces the library not to use the headers `<cstdio>`, `<ios>`, `<iosfwd>`, `<istream>`, and
+    `<ostream>`.
+
+    ```cpp
+    #define JSON_NO_IO 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## Version history
+
+- Added in version 3.10.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_noexception.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_noexception.md
new file mode 100644
index 00000000..c801b856
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_noexception.md
@@ -0,0 +1,45 @@
+# JSON_NOEXCEPTION
+
+```cpp
+#define JSON_NOEXCEPTION
+```
+
+Exceptions can be switched off by defining the symbol `JSON_NOEXCEPTION`. When defining `JSON_NOEXCEPTION`, `#!cpp try`
+is replaced by `#!cpp if (true)`, `#!cpp catch` is replaced by `#!cpp if (false)`, and `#!cpp throw` is replaced by
+`#!cpp std::abort()`.
+
+The same effect is achieved by setting the compiler flag `-fno-exceptions`.
+
+## Default definition
+
+By default, the macro is not defined.
+
+```cpp
+#undef JSON_NOEXCEPTION
+```
+
+## Notes
+
+The explanatory [`what()`](https://en.cppreference.com/w/cpp/error/exception/what) string of exceptions is not
+available for MSVC if exceptions are disabled, see [#2824](https://github.com/nlohmann/json/discussions/2824).
+
+## Examples
+
+??? example
+
+    The code below switches off exceptions in the library.
+
+    ```cpp
+    #define JSON_NOEXCEPTION 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## See also
+
+- [Switch off exceptions](../../home/exceptions.md#switch-off-exceptions) for more information how to switch off exceptions
+
+## Version history
+
+Added in version 2.1.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_skip_library_version_check.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_skip_library_version_check.md
new file mode 100644
index 00000000..c9a743c1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_skip_library_version_check.md
@@ -0,0 +1,37 @@
+# JSON_SKIP_LIBRARY_VERSION_CHECK
+
+```cpp
+#define JSON_SKIP_LIBRARY_VERSION_CHECK
+```
+
+When defined, the library will not create a compiler warning when a different version of the library was already
+included.
+
+## Default definition
+
+By default, the macro is not defined.
+
+```cpp
+#undef JSON_SKIP_LIBRARY_VERSION_CHECK
+```
+
+## Notes
+
+!!! danger "ABI compatibility"
+
+    Mixing different library versions in the same code can be a problem as the different versions may not be ABI
+    compatible.
+
+## Examples
+
+!!! example
+
+    The following warning will be shown in case a different version of the library was already included:
+
+    ```
+    Already included a different version of the library!
+    ```
+
+## Version history
+
+Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_skip_unsupported_compiler_check.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_skip_unsupported_compiler_check.md
new file mode 100644
index 00000000..374fa4c2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_skip_unsupported_compiler_check.md
@@ -0,0 +1,33 @@
+# JSON_SKIP_UNSUPPORTED_COMPILER_CHECK
+
+```cpp
+#define JSON_SKIP_UNSUPPORTED_COMPILER_CHECK
+```
+
+When defined, the library will not create a compile error when a known unsupported compiler is detected. This allows to
+use the library with compilers that do not fully support C++11 and may only work if unsupported features are not used.
+
+## Default definition
+
+By default, the macro is not defined.
+
+```cpp
+#undef JSON_SKIP_UNSUPPORTED_COMPILER_CHECK
+```
+
+## Examples
+
+??? example
+
+    The code below switches off the check whether the compiler is supported.
+
+    ```cpp
+    #define JSON_SKIP_UNSUPPORTED_COMPILER_CHECK 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## Version history
+
+Added in version 3.2.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_throw_user.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_throw_user.md
new file mode 100644
index 00000000..b02918cf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_throw_user.md
@@ -0,0 +1,75 @@
+# JSON_CATCH_USER, JSON_THROW_USER, JSON_TRY_USER
+
+```cpp
+// (1)
+#define JSON_CATCH_USER(exception) /* value */
+// (2)
+#define JSON_THROW_USER(exception) /* value */
+// (3)
+#define JSON_TRY_USER /* value */
+```
+
+Controls how exceptions are handled by the library.
+
+1. This macro overrides [`#!cpp catch`](https://en.cppreference.com/w/cpp/language/try_catch) calls inside the library.
+   The argument is the type of the exception to catch. As of version 3.8.0, the library only catches `std::out_of_range`
+   exceptions internally to rethrow them as [`json::out_of_range`](../../home/exceptions.md#out-of-range) exceptions.
+   The macro is always followed by a scope.
+2. This macro overrides `#!cpp throw` calls inside the library. The argument is the exception to be thrown. Note that
+   `JSON_THROW_USER` should leave the current scope (e.g., by throwing or aborting), as continuing after it may yield
+   undefined behavior.
+3. This macro overrides `#!cpp try` calls inside the library. It has no arguments and is always followed by a scope.
+
+## Parameters
+
+`exception` (in)
+:   an exception type
+
+## Default definition
+
+By default, the macros map to their respective C++ keywords:
+
+```cpp
+#define JSON_CATCH_USER(exception) catch(exception)
+#define JSON_THROW_USER(exception) throw exception
+#define JSON_TRY_USER              try
+```
+
+When exceptions are switched off, the `#!cpp try` block is executed unconditionally, and throwing exceptions is
+replaced by calling [`std::abort`](https://en.cppreference.com/w/cpp/utility/program/abort) to make reaching the
+`#!cpp throw` branch abort the process.
+
+```cpp
+#define JSON_THROW_USER(exception) std::abort()
+#define JSON_TRY_USER              if (true)
+#define JSON_CATCH_USER(exception) if (false)
+```
+
+## Examples
+
+??? example
+
+    The code below switches off exceptions and creates a log entry with a detailed error message in case of errors.
+
+    ```cpp
+    #include <iostream>
+    
+    #define JSON_TRY_USER if(true)
+    #define JSON_CATCH_USER(exception) if(false)
+    #define JSON_THROW_USER(exception)                           \
+        {std::clog << "Error in " << __FILE__ << ":" << __LINE__ \
+                   << " (function " << __FUNCTION__ << ") - "    \
+                   << (exception).what() << std::endl;           \
+         std::abort();}
+    
+    #include <nlohmann/json.hpp>
+    ```
+
+## See also
+
+- [Switch off exceptions](../../home/exceptions.md#switch-off-exceptions) for more information how to switch off exceptions
+- [JSON_NOEXCEPTION](json_noexception.md) - switch off exceptions
+
+## Version history
+
+- Added in version 3.1.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_global_udls.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_global_udls.md
new file mode 100644
index 00000000..69db9e77
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_global_udls.md
@@ -0,0 +1,98 @@
+# JSON_USE_GLOBAL_UDLS
+
+```cpp
+#define JSON_USE_GLOBAL_UDLS /* value */
+```
+
+When defined to `1`, the user-defined string literals (UDLs) are placed into the global namespace instead of
+`nlohmann::literals::json_literals`.
+
+## Default definition
+
+The default value is `1`.
+
+```cpp
+#define JSON_USE_GLOBAL_UDLS 1
+```
+
+When the macro is not defined, the library will define it to its default value.
+
+## Notes
+
+!!! info "Future behavior change"
+
+    The user-defined string literals will be removed from the global namespace in the next major release of the library.
+
+    To prepare existing code, define `JSON_USE_GLOBAL_UDLS` to `0` and bring the string literals into scope where
+    needed. Refer to any of the [string literals](#see-also) for details.
+
+!!! hint "CMake option"
+
+    The placement of user-defined string literals can also be controlled with the CMake option
+    [`JSON_GlobalUDLs`](../../integration/cmake.md#json_globaludls) (`ON` by default) which defines
+    `JSON_USE_GLOBAL_UDLS` accordingly.
+
+## Examples
+
+??? example "Example 1: Default behavior"
+
+    The code below shows the default behavior using the `_json` UDL.
+    
+    ```cpp
+    #include <nlohmann/json.hpp>
+    
+    #include <iostream>
+    
+    int main()
+    {
+        auto j = "42"_json;
+    
+        std::cout << j << std::endl;
+    }
+    ```
+    
+    Output:
+    
+    ```json
+    42
+    ```
+
+??? example "Example 2: Namespaced UDLs"
+
+    The code below shows how UDLs need to be brought into scope before using `_json` when `JSON_USE_GLOBAL_UDLS` is
+    defined to `0`.
+    
+    ```cpp
+    #define JSON_USE_GLOBAL_UDLS 0
+    #include <nlohmann/json.hpp>
+
+    #include <iostream>
+    
+    int main()
+    {
+        // auto j = "42"_json; // This line would fail to compile,
+                               // because the UDLs are not in the global namespace
+    
+        // Bring the UDLs into scope
+        using namespace nlohmann::json_literals;
+    
+        auto j = "42"_json;
+    
+        std::cout << j << std::endl;
+    }
+    ```
+    
+    Output:
+    
+    ```json
+    42
+    ```
+
+## See also
+
+- [`operator""_json`](../operator_literal_json.md)
+- [`operator""_json_pointer`](../operator_literal_json_pointer.md)
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_implicit_conversions.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_implicit_conversions.md
new file mode 100644
index 00000000..4d962c2e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_implicit_conversions.md
@@ -0,0 +1,59 @@
+# JSON_USE_IMPLICIT_CONVERSIONS
+
+```cpp
+#define JSON_USE_IMPLICIT_CONVERSIONS /* value */
+```
+
+When defined to `0`, implicit conversions are switched off. By default, implicit conversions are switched on. The
+value directly affects [`operator ValueType`](../basic_json/operator_ValueType.md).
+
+## Default definition
+
+By default, implicit conversions are enabled.
+
+```cpp
+#define JSON_USE_IMPLICIT_CONVERSIONS 1
+```
+
+## Notes
+
+!!! info "Future behavior change"
+
+    Implicit conversions will be switched off by default in the next major release of the library.
+
+    You can prepare existing code by already defining `JSON_USE_IMPLICIT_CONVERSIONS` to `0` and replace any implicit
+    conversions with calls to [`get`](../basic_json/get.md).
+
+!!! hint "CMake option"
+
+    Implicit conversions can also be controlled with the CMake option
+    [`JSON_ImplicitConversions`](../../integration/cmake.md#json_implicitconversions)
+    (`ON` by default) which defines `JSON_USE_IMPLICIT_CONVERSIONS` accordingly.
+
+## Examples
+
+??? example
+
+    This is an example for an implicit conversion:
+
+    ```cpp
+    json j = "Hello, world!";
+    std::string s = j;
+    ```
+
+    When `JSON_USE_IMPLICIT_CONVERSIONS` is defined to `0`, the code above does no longer compile. Instead, it must be
+    written like this:
+
+    ```cpp
+    json j = "Hello, world!";
+    auto s = j.template get<std::string>();
+    ```
+
+## See also
+
+- [**operator ValueType**](../basic_json/operator_ValueType.md) - get a value (implicit)
+- [**get**](../basic_json/get.md) - get a value (explicit)
+
+## Version history
+
+- Added in version 3.9.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_legacy_discarded_value_comparison.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_legacy_discarded_value_comparison.md
new file mode 100644
index 00000000..65f3f176
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/json_use_legacy_discarded_value_comparison.md
@@ -0,0 +1,77 @@
+# JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+
+```cpp
+#define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON /* value */
+```
+
+This macro enables the (incorrect) legacy comparison behavior of discarded JSON values. Possible values are `1` to
+enable or `0` to disable (default).
+
+When enabled, comparisons involving at least one discarded JSON value yield results as follows:
+
+| **Operator** | **Result**    |
+|--------------|---------------|
+| `==`         | `#!cpp false` |
+| `!=`         | `#!cpp true`  |
+| `<`          | `#!cpp false` |
+| `<=`         | `#!cpp true`  |
+| `>=`         | `#!cpp true`  |
+| `>`          | `#!cpp false` |
+
+Otherwise, comparisons involving at least one discarded JSON value always yield `#!cpp false`.
+
+## Default definition
+
+The default value is `0`.
+
+```cpp
+#define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON 0
+```
+
+When the macro is not defined, the library will define it to its default value.
+
+## Notes
+
+!!! warning "Inconsistent behavior in C++20 and beyond"
+
+    When targeting C++20 or above, enabling the legacy comparison behavior is _strongly_
+    discouraged.
+
+      - The 3-way comparison operator (`<=>`) will always give the correct result
+        (`#!cpp std::partial_ordering::unordered`) regardless of the value of
+        `JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON`.
+      - Overloads for the equality and relational operators emulate the legacy behavior.
+
+    Code outside your control may use either 3-way comparison or the equality and relational operators, resulting in
+    inconsistent and unpredictable behavior.
+
+    See [`operator<=>`](../basic_json/operator_spaceship.md) for more information on 3-way comparison.
+
+!!! warning "Deprecation"
+
+    The legacy comparison behavior is deprecated and may be removed in a future major version release.
+
+    New code should not depend on it and existing code should try to remove or rewrite expressions relying on it.
+
+!!! hint "CMake option"
+
+    Legacy comparison can also be controlled with the CMake option
+    [`JSON_LegacyDiscardedValueComparison`](../../integration/cmake.md#json_implicitconversions)
+    (`OFF` by default) which defines `JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON` accordingly.
+
+## Examples
+
+??? example
+
+    The code below switches on the legacy discarded value comparison behavior in the library.
+
+    ```cpp
+    #define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON 1
+    #include <nlohmann/json.hpp>
+
+    ...
+    ```
+
+## Version history
+
+- Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_derived_type.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_derived_type.md
new file mode 100644
index 00000000..f09a7478
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_derived_type.md
@@ -0,0 +1,137 @@
+<h1>NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE, NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT,
+    NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE, NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE,
+    NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT, NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE</h1>
+
+```cpp
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE(type, base_type, member...)                    // (1)
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT(type, base_type, member...)       // (2)
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE(type, base_type, member...)     // (3)
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE(type, base_type, member...)                // (4)
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT(type, base_type, member...)   // (5)
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(type, base_type, member...) // (6)
+```
+
+These macros can be used to simplify the serialization/deserialization of derived types if you want to use a JSON
+object as serialization and want to use the member variable names as object keys in that object.
+
+- Macros 1, 2 and 3 are to be defined **inside** the class/struct to create code for.
+Like [`NLOHMANN_DEFINE_TYPE_INTRUSIVE`](nlohmann_define_type_intrusive.md), they can access private members.
+- Macros 4, 5 and 6 are to be defined **outside** the class/struct to create code for, but **inside** its namespace.
+Like [`NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`](nlohmann_define_type_non_intrusive.md),
+they **cannot** access private members.
+
+The first  parameter is the name of the derived class/struct,
+the second parameter is the name of the base class/struct and all remaining parameters name the members.
+The base type **must** be already serializable/deserializable.
+
+- Macros 1 and 3 will use [`at`](../basic_json/at.md) during deserialization and will throw
+  [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if a key is missing in the JSON object.
+- Macros 2 and 4 will use [`value`](../basic_json/value.md) during deserialization and fall back to the default value for the
+   respective type of the member variable if a key in the JSON object is missing. The generated `from_json()` function
+   default constructs an object and uses its values as the defaults when calling the `value` function.
+
+## Parameters
+
+`type` (in)
+:   name of the type (class, struct) to serialize/deserialize
+
+`base_type` (in)
+:   name of the base type (class, struct) `type` is derived from
+
+`member` (in)
+:   name of the member variable to serialize/deserialize; up to 64 members can be given as comma-separated list
+
+## Default definition
+
+Macros 1 and 2 add two friend functions to the class which take care of the serialization and deserialization:
+
+```cpp
+friend void to_json(nlohmann::json&, const type&);
+friend void from_json(const nlohmann::json&, type&);
+```
+
+Macros 4 and 5 add two functions to the namespace which take care of the serialization and deserialization:
+
+```cpp
+void to_json(nlohmann::json&, const type&);
+void from_json(const nlohmann::json&, type&);
+```
+
+Macros 3 and 6 add one function to the namespace which take care of the serialization only:
+
+```cpp
+void to_json(nlohmann::json&, const type&);
+```
+
+In first two cases cases they call the `to_json`/`from_json` functions of the base type
+before serializing/deserializing the members of the derived type:
+
+```cpp
+class A { /* ... */ };
+class B : public A { /* ... */ };
+
+void to_json(nlohmann::json& j, const B& b) {
+    nlohmann::to_json(j, static_cast<const A&>(b));
+    // ...
+}
+
+void from_json(const nlohmann::json& j, B& b) {
+    nlohmann::from_json(j, static_cast<A&>(b));
+    // ...
+}
+```
+
+In the third case only `to_json` will be called:
+
+```cpp
+class A { /* ... */ };
+class B : public A { /* ... */ };
+
+void to_json(nlohmann::json& j, const B& b) {
+    nlohmann::to_json(j, static_cast<const A&>(b));
+    // ...
+}
+```
+
+## Notes
+
+!!! info "Prerequisites"
+
+    - Macros 1, 2 and 3 have the same prerequisites of NLOHMANN_DEFINE_TYPE_INTRUSIVE. 
+    - Macros 4, 5 and 6 have the same prerequisites of NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE.
+    - Serialization/deserialization of base types must be defined.
+
+!!! warning "Implementation limits"
+
+    - See Implementation limits for NLOHMANN_DEFINE_TYPE_INTRUSIVE and NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE.
+
+## Examples
+
+Example of `NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE` usage:
+
+```cpp
+class A {
+  double Aa;
+  double Ab;
+  NLOHMANN_DEFINE_TYPE_INTRUSIVE(A, Aa, Ab)
+};
+
+class B : public A {
+  int Ba;
+  int Bb;
+  NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE(B, A, Ba, Bb)
+};
+```
+
+## See also
+
+- [NLOHMANN_DEFINE_TYPE_INTRUSIVE / NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT](nlohmann_define_type_intrusive.md)
+  for similar macros that can be defined _inside_ a non-derived type.
+- [NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE / NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT](nlohmann_define_type_non_intrusive.md)
+  for similar macros that can be defined _outside_ a non-derived type.
+- [Arbitrary Type Conversions](../../features/arbitrary_types.md) for an overview.
+
+## Version history
+
+1. Added in version 3.11.x.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_type_intrusive.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_type_intrusive.md
new file mode 100644
index 00000000..ad425810
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_type_intrusive.md
@@ -0,0 +1,156 @@
+# NLOHMANN_DEFINE_TYPE_INTRUSIVE, NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT, NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE
+
+```cpp
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE(type, member...)              // (1)
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(type, member...) // (2)
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE(type, member...) // (3)
+```
+
+These macros can be used to simplify the serialization/deserialization of types if you want to use a JSON object as
+serialization and want to use the member variable names as object keys in that object. The macro is to be defined
+**inside** the class/struct to create code for. Unlike
+[`NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`](nlohmann_define_type_non_intrusive.md), it can access private members. The first
+parameter is the name of the class/struct, and all remaining parameters name the members.
+
+1. Will use [`at`](../basic_json/at.md) during deserialization and will throw
+  [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if a key is missing in the JSON object.
+2. Will use [`value`](../basic_json/value.md) during deserialization and fall back to the default value for the
+   respective type of the member variable if a key in the JSON object is missing. The generated `from_json()` function
+   default constructs an object and uses its values as the defaults when calling the `value` function.
+3. Only defines the serialization. Useful in cases when the type does not have a default constructor and only serialization in required.
+
+## Parameters
+
+`type` (in)
+:   name of the type (class, struct) to serialize/deserialize
+
+`member` (in)
+:   name of the member variable to serialize/deserialize; up to 64 members can be given as comma-separated list
+
+## Default definition
+
+The macros add two friend functions to the class which take care of the serialization and deserialization:
+
+```cpp
+friend void to_json(nlohmann::json&, const type&);
+friend void from_json(const nlohmann::json&, type&); // except (3)
+```
+
+See examples below for the concrete generated code.
+
+## Notes
+
+!!! info "Prerequisites"
+
+    1. The type `type` must be default constructible (except (3)). See [How can I use `get()` for non-default
+       constructible/non-copyable types?][GetNonDefNonCopy] for how to overcome this limitation.
+    2. The macro must be used inside the type (class/struct).
+
+[GetNonDefNonCopy]: ../../features/arbitrary_types.md#how-can-i-use-get-for-non-default-constructiblenon-copyable-types
+
+!!! warning "Implementation limits"
+
+    - The current implementation is limited to at most 64 member variables. If you want to serialize/deserialize types
+      with more than 64 member variables, you need to define the `to_json`/`from_json` functions manually.
+    - The macros only work for the [`nlohmann::json`](../json.md) type; other specializations such as
+      [`nlohmann::ordered_json`](../ordered_json.md) are currently unsupported.
+
+## Examples
+
+??? example "Example (1): NLOHMANN_DEFINE_TYPE_INTRUSIVE"
+
+    Consider the following complete example:
+
+    ```cpp hl_lines="22"
+    --8<-- "examples/nlohmann_define_type_intrusive_macro.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_define_type_intrusive_macro.output"
+    ```
+
+    Notes:
+
+    - `ns::person` is default-constructible. This is a requirement for using the macro.
+    - `ns::person` has private member variables. This makes `NLOHMANN_DEFINE_TYPE_INTRUSIVE` applicable, but not
+      `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`.
+    - The macro `NLOHMANN_DEFINE_TYPE_INTRUSIVE` is used _inside_ the class.
+    - A missing key "age" in the deserialization yields an exception. To fall back to the default value,
+      `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT` can be used.
+
+    The macro is equivalent to:
+
+    ```cpp hl_lines="22 23 24 25 26 27 28 29 30 31 32 33 34"
+    --8<-- "examples/nlohmann_define_type_intrusive_explicit.cpp"
+    ```
+
+??? example "Example (2): NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT"
+
+    Consider the following complete example:
+
+    ```cpp hl_lines="22"
+    --8<-- "examples/nlohmann_define_type_intrusive_with_default_macro.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_define_type_intrusive_with_default_macro.output"
+    ```
+
+    Notes:
+
+    - `ns::person` is default-constructible. This is a requirement for using the macro.
+    - `ns::person` has private member variables. This makes `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT` applicable,
+       but not `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT`.
+    - The macro `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT` is used _inside_ the class.
+    - A missing key "age" in the deserialization does not yield an exception. Instead, the default value `-1` is used.
+
+    The macro is equivalent to:
+
+    ```cpp hl_lines="22 23 24 25 26 27 28 29 30 31 32 33 34 35"
+    --8<-- "examples/nlohmann_define_type_intrusive_with_default_explicit.cpp"
+    ```
+
+    Note how a default-initialized `person` object is used in the `from_json` to fill missing values.
+
+??? example "Example (3): NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE"
+    Consider the following complete example:
+
+    ```cpp hl_lines="22"
+    --8<-- "examples/nlohmann_define_type_intrusive_only_serialize_macro.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_define_type_intrusive_only_serialize_macro.output"
+    ```
+
+    Notes:
+
+    - `ns::person` is non-default-constructible. This allows this macro to be used instead of 
+      `NLOHMANN_DEFINE_TYPE_INTRUSIVE` and `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT`.
+    - `ns::person` has private member variables. This makes `NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE` applicable, but not
+      `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE`.
+    - The macro `NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE` is used _inside_ the class.
+
+    The macro is equivalent to:
+
+    ```cpp hl_lines="22 22 23 24 25 26 27"
+    --8<-- "examples/nlohmann_define_type_intrusive_only_serialize_explicit.cpp"
+    ```
+
+## See also
+
+- [NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE{_WITH_DEFAULT, _ONLY_SERIALIZE}](nlohmann_define_type_non_intrusive.md)
+  for a similar macro that can be defined _outside_ the type.
+- [Arbitrary Type Conversions](../../features/arbitrary_types.md) for an overview.
+
+## Version history
+
+1. Added in version 3.9.0.
+2. Added in version 3.11.0.
+3. Added in version TODO.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_type_non_intrusive.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_type_non_intrusive.md
new file mode 100644
index 00000000..5830f8ca
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_define_type_non_intrusive.md
@@ -0,0 +1,157 @@
+# NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE, NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT, NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE
+
+```cpp
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(type, member...)              // (1)
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(type, member...) // (2)
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(type, member...) // (3)
+```
+
+These macros can be used to simplify the serialization/deserialization of types if you want to use a JSON object as
+serialization and want to use the member variable names as object keys in that object. The macro is to be defined
+**outside** the class/struct to create code for, but **inside** its namespace. Unlike
+[`NLOHMANN_DEFINE_TYPE_INTRUSIVE`](nlohmann_define_type_intrusive.md), it **cannot** access private members. The first
+parameter is the name of the class/struct, and all remaining parameters name the members.
+
+1. Will use [`at`](../basic_json/at.md) during deserialization and will throw
+   [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if a key is missing in the JSON object.
+2. Will use [`value`](../basic_json/value.md) during deserialization and fall back to the default value for the
+   respective type of the member variable if a key in the JSON object is missing. The generated `from_json()` function
+   default constructs an object and uses its values as the defaults when calling the `value` function.
+3. Only defines the serialization. Useful in cases when the type does not have a default constructor and only serialization in required.
+
+## Parameters
+
+`type` (in)
+:   name of the type (class, struct) to serialize/deserialize
+
+`member` (in)
+:   name of the (public) member variable to serialize/deserialize; up to 64 members can be given as comma-separated list
+
+## Default definition
+
+The macros add two functions to the namespace which take care of the serialization and deserialization:
+
+```cpp
+void to_json(nlohmann::json&, const type&);
+void from_json(const nlohmann::json&, type&); // except (3)
+```
+
+See examples below for the concrete generated code.
+
+## Notes
+
+!!! info "Prerequisites"
+
+    1. The type `type` must be default constructible (except (3). See [How can I use `get()` for non-default constructible/non-copyable types?][GetNonDefNonCopy]
+       for how to overcome this limitation.
+    2. The macro must be used outside the type (class/struct).
+    3. The passed members must be public.
+
+[GetNonDefNonCopy]: ../../features/arbitrary_types.md#how-can-i-use-get-for-non-default-constructiblenon-copyable-types
+
+!!! warning "Implementation limits"
+
+    - The current implementation is limited to at most 64 member variables. If you want to serialize/deserialize types
+      with more than 64 member variables, you need to define the `to_json`/`from_json` functions manually.
+    - The macros only work for the [`nlohmann::json`](../json.md) type; other specializations such as
+      [`nlohmann::ordered_json`](../ordered_json.md) are currently unsupported.
+
+## Examples
+
+??? example "Example (1): NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE"
+
+    Consider the following complete example:
+
+    ```cpp hl_lines="16"
+    --8<-- "examples/nlohmann_define_type_non_intrusive_macro.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_define_type_non_intrusive_macro.output"
+    ```
+
+    Notes:
+
+    - `ns::person` is default-constructible. This is a requirement for using the macro.
+    - `ns::person` has only public member variables. This makes `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE` applicable.
+    - The macro `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE` is used _outside_ the class, but _inside_ its namespace `ns`.
+    - A missing key "age" in the deserialization yields an exception. To fall back to the default value,
+      `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT` can be used.
+
+    The macro is equivalent to:
+
+    ```cpp hl_lines="16 17 18 19 20 21 22 23 24 25 26 27 28"
+    --8<-- "examples/nlohmann_define_type_non_intrusive_explicit.cpp"
+    ```
+
+??? example "Example (2): NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT"
+
+    Consider the following complete example:
+
+    ```cpp hl_lines="22"
+    --8<-- "examples/nlohmann_define_type_non_intrusive_with_default_macro.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_define_type_non_intrusive_with_default_macro.output"
+    ```
+
+    Notes:
+
+    - `ns::person` is default-constructible. This is a requirement for using the macro.
+    - `ns::person` has only public member variables. This makes `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT`
+      applicable.
+    - The macro `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT` is used _outside_ the class, but _inside_ its
+      namespace `ns`.
+    - A missing key "age" in the deserialization does not yield an exception. Instead, the default value `-1` is used.
+
+    The macro is equivalent to:
+
+    ```cpp hl_lines="22 23 24 25 26 27 28 29 30 31 32 33 34 35"
+    --8<-- "examples/nlohmann_define_type_non_intrusive_with_default_explicit.cpp"
+    ```
+
+    Note how a default-initialized `person` object is used in the `from_json` to fill missing values.
+
+??? example "Example (3): NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE"
+
+    Consider the following complete example:
+
+    ```cpp hl_lines="16"
+    --8<-- "examples/nlohmann_define_type_non_intrusive_only_serialize_macro.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_define_type_non_intrusive_only_serialize_macro.output"
+    ```
+
+    Notes:
+
+    - `ns::person` is non-default-constructible. This allows this macro to be used instead of 
+      `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE` and `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT`.
+    - `ns::person` has only public member variables. This makes `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE` applicable.
+    - The macro `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE` is used _outside_ the class, but _inside_ its namespace `ns`.
+
+    The macro is equivalent to:
+
+    ```cpp hl_lines="16 17 18 19 20 21"
+    --8<-- "examples/nlohmann_define_type_non_intrusive_only_serialize_explicit.cpp"
+    ```
+
+## See also
+
+- [NLOHMANN_DEFINE_TYPE_INTRUSIVE{_WITH_DEFAULT, _ONLY_SERIALIZE}](nlohmann_define_type_intrusive.md)
+  for a similar macro that can be defined _inside_ the type.
+- [Arbitrary Type Conversions](../../features/arbitrary_types.md) for an overview.
+
+## Version history
+
+1. Added in version 3.9.0.
+2. Added in version 3.11.0.
+3. Added in version TODO.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace.md
new file mode 100644
index 00000000..5c54dba5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace.md
@@ -0,0 +1,41 @@
+# NLOHMANN_JSON_NAMESPACE
+
+```cpp
+#define NLOHMANN_JSON_NAMESPACE /* value */
+```
+
+This macro evaluates to the full name of the `nlohmann` namespace.
+
+## Default definition
+
+The default value consists of the root namespace (`nlohmann`) and an inline ABI namespace. See
+[`nlohmann` Namespace](../../features/namespace.md#structure) for details.
+
+When the macro is not defined, the library will define it to its default value. Overriding this value has no effect on
+the library.
+
+## Examples
+
+??? example
+
+    The example shows how to use `NLOHMANN_JSON_NAMESPACE` instead of just `nlohmann`, as well as how to output the value
+    of `NLOHMANN_JSON_NAMESPACE`.
+
+    ```cpp
+    --8<-- "examples/nlohmann_json_namespace.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_json_namespace.output"
+    ```
+
+## See also
+
+- [`NLOHMANN_JSON_NAMESPACE_BEGIN, NLOHMANN_JSON_NAMESPACE_END`](nlohmann_json_namespace_begin.md)
+- [`NLOHMANN_JSON_NAMESPACE_NO_VERSION`](nlohmann_json_namespace_no_version.md)
+
+## Version history
+
+- Added in version 3.11.0. Changed inline namespace name in version 3.11.2.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace_begin.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace_begin.md
new file mode 100644
index 00000000..1374264a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace_begin.md
@@ -0,0 +1,61 @@
+# NLOHMANN_JSON_NAMESPACE_BEGIN, NLOHMANN_JSON_NAMESPACE_END
+
+```cpp
+#define NLOHMANN_JSON_NAMESPACE_BEGIN /* value */  // (1)
+#define NLOHMANN_JSON_NAMESPACE_END   /* value */  // (2)
+```
+
+These macros can be used to open and close the `nlohmann` namespace. See
+[`nlohmann` Namespace](../../features/namespace.md#structure) for details.
+
+1. Opens the namespace.
+2. Closes the namespace.
+
+## Default definition
+
+The default definitions open and close the `nlohmann` namespace. The precise definition of
+[`NLOHMANN_JSON_NAMESPACE_BEGIN`] varies as described [here](../../features/namespace.md#structure).
+
+1. Default definition of `NLOHMANN_JSON_NAMESPACE_BEGIN`:
+
+    ```cpp
+    namespace nlohmann
+    {
+    inline namespace json_abi_v3_11_2
+    {
+    ```
+
+2. Default definition of `NLOHMANN_JSON_NAMESPACE_END`:
+    ```cpp
+    }  // namespace json_abi_v3_11_2
+    }  // namespace nlohmann
+    ```
+
+When these macros are not defined, the library will define them to their default definitions.
+
+## Examples
+
+??? example
+
+    The example shows how to use `NLOHMANN_JSON_NAMESPACE_BEGIN`/`NLOHMANN_JSON_NAMESPACE_END` from the
+    [How do I convert third-party types?](../../features/arbitrary_types.md#how-do-i-convert-third-party-types) page.
+
+    ```cpp
+    --8<-- "examples/nlohmann_json_namespace_begin.c++17.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_json_namespace_begin.c++17.output"
+    ```
+
+## See also
+
+- [`nlohmann` Namespace](../../features/namespace.md)
+- [NLOHMANN_JSON_NAMESPACE](nlohmann_json_namespace.md)
+- [`NLOHMANN_JSON_NAMESPACE_NO_VERSION`](nlohmann_json_namespace_no_version.md)
+
+## Version history
+
+- Added in version 3.11.0. Changed inline namespace name in version 3.11.2.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace_no_version.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace_no_version.md
new file mode 100644
index 00000000..9e2a52d0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_namespace_no_version.md
@@ -0,0 +1,45 @@
+# NLOHMANN_JSON_NAMESPACE_NO_VERSION
+
+```cpp
+#define NLOHMANN_JSON_NAMESPACE_NO_VERSION /* value */
+```
+
+If defined to `1`, the version component is omitted from the inline namespace. See
+[`nlohmann` Namespace](../../features/namespace.md#structure) for details.
+
+## Default definition
+
+The default value is `0`.
+
+```cpp
+#define NLOHMANN_JSON_NAMESPACE_NO_VERSION 0
+```
+
+When the macro is not defined, the library will define it to its default value.
+
+## Examples
+
+??? example
+
+    The example shows how to use `NLOHMANN_JSON_NAMESPACE_NO_VERSION` to disable the version component of the inline
+    namespace.
+    
+    ```cpp
+    --8<-- "examples/nlohmann_json_namespace_no_version.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_json_namespace_no_version.output"
+    ```
+
+## See also
+
+- [`nlohmann` Namespace](../../features/namespace.md)
+- [`NLOHMANN_JSON_NAMESPACE`](nlohmann_json_namespace.md)
+- [`NLOHMANN_JSON_NAMESPACE_BEGIN, NLOHMANN_JSON_NAMESPACE_END`](nlohmann_json_namespace_begin.md)
+
+## Version history
+
+- Added in version 3.11.2.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_serialize_enum.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_serialize_enum.md
new file mode 100644
index 00000000..dc2cc8ec
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_serialize_enum.md
@@ -0,0 +1,85 @@
+# NLOHMANN_JSON_SERIALIZE_ENUM
+
+```cpp
+#define NLOHMANN_JSON_SERIALIZE_ENUM(type, conversion...)
+```
+
+By default, enum values are serialized to JSON as integers. In some cases this could result in undesired behavior. If an
+enum is modified or re-ordered after data has been serialized to JSON, the later de-serialized JSON data may be
+undefined or a different enum value than was originally intended.
+
+The `NLOHMANN_JSON_SERIALIZE_ENUM` allows to define a user-defined serialization for every enumerator.
+
+## Parameters
+
+`type` (in)
+:   name of the enum to serialize/deserialize
+
+`conversion` (in)
+:   a pair of an enumerator and a JSON serialization; arbitrary pairs can be given as a comma-separated list
+
+## Default definition
+
+The macros add two friend functions to the class which take care of the serialization and deserialization:
+
+```cpp
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const type& e);
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, type& e);
+```
+
+## Notes
+
+!!! info "Prerequisites"
+
+    The macro must be used inside the namespace of the enum.
+
+!!! important "Important notes"
+
+    - When using [`template get<ENUM_TYPE>()`](../basic_json/get.md), undefined JSON values will default to the first specified
+      conversion. Select this default pair carefully. See example 1 below.
+    - If an enum or JSON value is specified in multiple conversions, the first matching conversion from the top of the
+      list will be returned when converting to or from JSON. See example 2 below.
+
+## Examples
+
+??? example "Example 1: Basic usage"
+
+    The example shows how `NLOHMANN_JSON_SERIALIZE_ENUM` can be used to serialize/deserialize both classical enums and
+    C++11 enum classes:
+
+    ```cpp hl_lines="16 17 18 19 20 21 22 29 30 31 32 33"
+    --8<-- "examples/nlohmann_json_serialize_enum.cpp"
+    ```
+
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_json_serialize_enum.output"
+    ```
+
+??? example "Example 2: Multiple conversions for one enumerator"
+
+    The example shows how to use multiple conversions for a single enumerator. In the example, `Color::red` will always
+    be *serialized* to `"red"`, because the first occurring conversion. The second conversion, however, offers an
+    alternative *deserialization* from `"rot"` to `Color::red`.
+
+    ```cpp hl_lines="17"
+    --8<-- "examples/nlohmann_json_serialize_enum_2.cpp"
+    ```
+
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_json_serialize_enum_2.output"
+    ```
+
+## See also
+
+- [Specializing enum conversion](../../features/enum_conversion.md)
+- [`JSON_DISABLE_ENUM_SERIALIZATION`](json_disable_enum_serialization.md)
+
+## Version history
+
+Added in version 3.4.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_version_major.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_version_major.md
new file mode 100644
index 00000000..d7a31427
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/macros/nlohmann_json_version_major.md
@@ -0,0 +1,40 @@
+# NLOHMANN_JSON_VERSION_MAJOR, NLOHMANN_JSON_VERSION_MINOR, NLOHMANN_JSON_VERSION_PATCH
+
+```cpp
+#define NLOHMANN_JSON_VERSION_MAJOR /* value */
+#define NLOHMANN_JSON_VERSION_MINOR /* value */
+#define NLOHMANN_JSON_VERSION_PATCH /* value */
+```
+
+These macros are defined by the library and contain the version numbers according to
+[Semantic Versioning 2.0.0](https://semver.org/spec/v2.0.0.html).
+
+## Default definition
+
+The macros are defined according to the current library version.
+
+## Examples
+
+??? example
+
+    The example below shows how `NLOHMANN_JSON_VERSION_MAJOR`, `NLOHMANN_JSON_VERSION_MINOR`, and
+    `NLOHMANN_JSON_VERSION_PATCH` are defined by the library.
+
+    ```cpp
+    --8<-- "examples/nlohmann_json_version.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/nlohmann_json_version.output"
+    ```
+
+## See also
+
+- [meta](../basic_json/meta.md) - returns version information on the library
+- [JSON_SKIP_LIBRARY_VERSION_CHECK](json_skip_library_version_check.md) - skip library version check
+
+## Version history
+
+- Added in version 3.1.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_gtgt.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_gtgt.md
new file mode 100644
index 00000000..e76cc0db
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_gtgt.md
@@ -0,0 +1,64 @@
+# <small>nlohmann::</small>operator>>(basic_json)
+
+```cpp
+std::istream& operator>>(std::istream& i, basic_json& j);
+```
+
+Deserializes an input stream to a JSON value.
+
+## Parameters
+
+`i` (in, out)
+:   input stream to read a serialized JSON value from
+
+`j` (in, out)
+:   JSON value to write the deserialized input to
+
+## Return value
+
+the stream `i`
+
+## Exceptions
+
+- Throws [`parse_error.101`](../home/exceptions.md#jsonexceptionparse_error101) in case of an unexpected token.
+- Throws [`parse_error.102`](../home/exceptions.md#jsonexceptionparse_error102) if to_unicode fails or surrogate error.
+- Throws [`parse_error.103`](../home/exceptions.md#jsonexceptionparse_error103) if to_unicode fails.
+
+## Complexity
+
+Linear in the length of the input. The parser is a predictive LL(1) parser.
+
+## Notes
+
+A UTF-8 byte order mark is silently ignored.
+
+!!! warning "Deprecation"
+
+    This function replaces function `#!cpp std::istream& operator<<(basic_json& j, std::istream& i)` which has
+    been deprecated in version 3.0.0. It will be removed in version 4.0.0. Please replace calls like `#!cpp j << i;`
+    with `#!cpp i >> j;`.
+
+## Examples
+
+??? example
+
+    The example below shows how a JSON value is constructed by reading a serialization from a stream.
+        
+    ```cpp
+    --8<-- "examples/operator_deserialize.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_deserialize.output"
+    ```
+
+## See also
+
+- [accept](basic_json/accept.md) - check if the input is valid JSON
+- [parse](basic_json/parse.md) - deserialize from a compatible input
+
+## Version history
+
+- Added in version 1.0.0. Deprecated in version 3.0.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_literal_json.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_literal_json.md
new file mode 100644
index 00000000..a3a4bd28
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_literal_json.md
@@ -0,0 +1,61 @@
+# <small>nlohmann::</small>operator""_json
+
+```cpp
+json operator ""_json(const char* s, std::size_t n);
+```
+
+This operator implements a user-defined string literal for JSON objects. It can be used by adding `#!cpp _json` to a
+string literal and returns a [`json`](json.md) object if no parse error occurred.
+
+It is recommended to bring the operator into scope using any of the following lines:
+```cpp
+using nlohmann::literals::operator ""_json;
+using namespace nlohmann::literals;
+using namespace nlohmann::json_literals;
+using namespace nlohmann::literals::json_literals;
+using namespace nlohmann;
+```
+
+This is suggested to ease migration to the next major version release of the library. See
+[`JSON_USE_GLOBAL_UDLS`](macros/json_use_global_udls.md#notes) for details.
+
+## Parameters
+
+`s` (in)
+:   a string representation of a JSON object
+
+`n` (in)
+:   length of string `s`
+
+## Return value
+
+[`json`](json.md) value parsed from `s`
+
+## Exceptions
+
+The function can throw anything that [`parse(s, s+n)`](basic_json/parse.md) would throw.
+
+## Complexity
+
+Linear.
+
+## Examples
+
+??? example
+
+    The following code shows how to create JSON values from string literals.
+     
+    ```cpp
+    --8<-- "examples/operator_literal_json.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_literal_json.output"
+    ```
+
+## Version history
+
+- Added in version 1.0.0.
+- Moved to namespace `nlohmann::literals::json_literals` in 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_literal_json_pointer.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_literal_json_pointer.md
new file mode 100644
index 00000000..423678c7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_literal_json_pointer.md
@@ -0,0 +1,64 @@
+# <small>nlohmann::</small>operator""_json_pointer
+
+```cpp
+json_pointer operator ""_json_pointer(const char* s, std::size_t n);
+```
+
+This operator implements a user-defined string literal for JSON Pointers. It can be used by adding `#!cpp _json_pointer`
+to a string literal and returns a [`json_pointer`](json_pointer/index.md) object if no parse error occurred.
+
+It is recommended to bring the operator into scope using any of the following lines:
+```cpp
+using nlohmann::literals::operator ""_json_pointer;
+using namespace nlohmann::literals;
+using namespace nlohmann::json_literals;
+using namespace nlohmann::literals::json_literals;
+using namespace nlohmann;
+```
+This is suggested to ease migration to the next major version release of the library. See
+[`JSON_USE_GLOBAL_UDLS`](macros/json_use_global_udls.md#notes) for details.
+
+## Parameters
+
+`s` (in)
+:   a string representation of a JSON Pointer
+
+`n` (in)
+:   length of string `s`
+
+## Return value
+
+[`json_pointer`](json_pointer/index.md) value parsed from `s`
+
+## Exceptions
+
+The function can throw anything that [`json_pointer::json_pointer`](json_pointer/index.md) would throw.
+
+## Complexity
+
+Linear.
+
+## Examples
+
+??? example
+
+    The following code shows how to create JSON Pointers from string literals.
+     
+    ```cpp
+    --8<-- "examples/operator_literal_json_pointer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_literal_json_pointer.output"
+    ```
+
+## See also
+
+- [json_pointer](json_pointer/index.md) - type to represent JSON Pointers
+
+## Version history
+
+- Added in version 2.0.0.
+- Moved to namespace `nlohmann::literals::json_literals` in 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_ltlt.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_ltlt.md
new file mode 100644
index 00000000..1718b3c9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/operator_ltlt.md
@@ -0,0 +1,87 @@
+# <small>nlohmann::</small>operator<<(basic_json), <small>nlohmann::</small>operator<<(json_pointer)
+
+```cpp
+std::ostream& operator<<(std::ostream& o, const basic_json& j);      // (1)
+
+std::ostream& operator<<(std::ostream& o, const json_pointer& ptr);  // (2)
+```
+
+1. Serialize the given JSON value `j` to the output stream `o`. The JSON value will be serialized using the
+   [`dump`](basic_json/dump.md) member function.
+    - The indentation of the output can be controlled with the member variable `width` of the output stream `o`. For
+      instance, using the manipulator `std::setw(4)` on `o` sets the indentation level to `4` and the serialization
+      result is the same as calling `dump(4)`.
+    - The indentation character can be controlled with the member variable `fill` of the output stream `o`.
+      For instance, the manipulator `std::setfill('\\t')` sets indentation to use a tab character rather than the
+      default space character.
+2. Write a string representation of the given JSON pointer `ptr` to the output stream `o`. The string representation is
+   obtained using the [`to_string`](json_pointer/to_string.md) member function.
+
+## Parameters
+
+`o` (in, out)
+:   stream to write to
+
+`j` (in)
+:   JSON value to serialize
+
+`ptr` (in)
+:   JSON pointer to write
+
+## Return value
+
+the stream `o`
+
+## Exceptions
+
+1. Throws [`type_error.316`](../home/exceptions.md#jsonexceptiontype_error316) if a string stored inside the JSON
+   value is not UTF-8 encoded. Note that unlike the [`dump`](basic_json/dump.md) member functions, no `error_handler`
+   can be set.
+2. None.
+
+## Complexity
+
+Linear.
+
+## Notes
+
+!!! warning "Deprecation"
+
+    Function  `#!cpp std::ostream& operator<<(std::ostream& o, const basic_json& j)` replaces function
+    `#!cpp std::ostream& operator>>(const basic_json& j, std::ostream& o)` which has been deprecated in version 3.0.0.
+    It will be removed in version 4.0.0. Please replace calls like `#!cpp j >> o;` with `#!cpp o << j;`.
+
+## Examples
+
+??? example "Example: (1) serialize JSON value to stream"
+
+    The example below shows the serialization with different parameters to `width` to adjust the indentation level.
+    
+    ```cpp
+    --8<-- "examples/operator_ltlt__basic_json.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_ltlt__basic_json.output"
+    ```
+
+??? example "Example: (2) write JSON pointer to stream"
+
+    The example below shows how to write a JSON pointer to a stream.
+    
+    ```cpp
+    --8<-- "examples/operator_ltlt__json_pointer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/operator_ltlt__json_pointer.output"
+    ```
+## Version history
+
+1. Added in version 1.0.0. Added support for indentation character and deprecated
+   `#!cpp std::ostream& operator>>(const basic_json& j, std::ostream& o)` in version 3.0.0.
+3. Added in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/ordered_json.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/ordered_json.md
new file mode 100644
index 00000000..f4062d13
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/ordered_json.md
@@ -0,0 +1,39 @@
+# <small>nlohmann::</small>ordered_json
+
+```cpp
+using ordered_json = basic_json<ordered_map>;
+```
+
+This type preserves the insertion order of object keys.
+
+## Iterator invalidation
+
+The type is based on [`ordered_map`](ordered_map.md) which in turn uses a `std::vector` to store object elements.
+Therefore, adding object elements can yield a reallocation in which case all iterators (including the
+[`end()`](basic_json/end.md) iterator) and all references to the elements are invalidated. Also, any iterator or
+reference after the insertion point will point to the same index which is now a different value.
+
+## Examples
+
+??? example
+
+    The example below demonstrates how `ordered_json` preserves the insertion order of object keys.
+
+    ```cpp
+    --8<-- "examples/ordered_json.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/ordered_json.output"
+    ```
+
+## See also
+
+- [ordered_map](ordered_map.md)
+- [Object Order](../features/object_order.md)
+
+## Version history
+
+Since version 3.9.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/ordered_map.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/ordered_map.md
new file mode 100644
index 00000000..ca493416
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/api/ordered_map.md
@@ -0,0 +1,82 @@
+# <small>nlohmann::</small>ordered_map
+
+```cpp
+template<class Key, class T, class IgnoredLess = std::less<Key>,
+         class Allocator = std::allocator<std::pair<const Key, T>>>
+struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>;
+```
+
+A minimal map-like container that preserves insertion order for use within [`nlohmann::ordered_json`](ordered_json.md)
+(`nlohmann::basic_json<ordered_map>`).
+
+## Template parameters
+
+`Key`
+:   key type
+
+`T`
+:   mapped type
+
+`IgnoredLess`
+:   comparison function (ignored and only added to ensure compatibility with `#!cpp std::map`)
+
+`Allocator`
+:   allocator type
+
+## Iterator invalidation
+
+The type uses a `std::vector` to store object elements. Therefore, adding elements can yield a reallocation in which
+case all iterators (including the `end()` iterator) and all references to the elements are invalidated.
+
+## Member types
+
+- **key_type** - key type (`Key`)
+- **mapped_type** - mapped type (`T`)
+- **Container** - base container type (`#!cpp std::vector<std::pair<const Key, T>, Allocator>`)
+- **iterator**
+- **const_iterator**
+- **size_type**
+- **value_type**
+- **key_compare** - key comparison function
+```cpp
+std::equal_to<Key>  // until C++14
+
+std::equal_to<>     // since C++14
+```
+
+## Member functions
+
+- (constructor)
+- (destructor)
+- **emplace**
+- **operator\[\]**
+- **at**
+- **erase**
+- **count**
+- **find**
+- **insert**
+
+## Examples
+
+??? example
+
+    The example shows the different behavior of `std::map` and `nlohmann::ordered_map`.
+     
+    ```cpp
+    --8<-- "examples/ordered_map.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/ordered_map.output"
+    ```
+
+## See also
+
+- [ordered_json](ordered_json.md)
+
+## Version history
+
+- Added in version 3.9.0 to implement [`nlohmann::ordered_json`](ordered_json.md).
+- Added **key_compare** member in version 3.11.0.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/css/custom.css b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/css/custom.css
new file mode 100644
index 00000000..7a1008b0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/css/custom.css
@@ -0,0 +1,4 @@
+/* disable ligatures in code and preformatted blocks */
+code, pre {
+    font-variant-ligatures: none;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/arbitrary_types.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/arbitrary_types.md
new file mode 100644
index 00000000..449671c9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/arbitrary_types.md
@@ -0,0 +1,274 @@
+# Arbitrary Type Conversions
+
+Every type can be serialized in JSON, not just STL containers and scalar types. Usually, you would do something along those lines:
+
+```cpp
+namespace ns {
+    // a simple struct to model a person
+    struct person {
+        std::string name;
+        std::string address;
+        int age;
+    };
+} // namespace ns
+
+ns::person p = {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+// convert to JSON: copy each value into the JSON object
+json j;
+j["name"] = p.name;
+j["address"] = p.address;
+j["age"] = p.age;
+
+// ...
+
+// convert from JSON: copy each value from the JSON object
+ns::person p {
+    j["name"].template get<std::string>(),
+    j["address"].template get<std::string>(),
+    j["age"].template get<int>()
+};
+```
+
+It works, but that's quite a lot of boilerplate... Fortunately, there's a better way:
+
+```cpp
+// create a person
+ns::person p {"Ned Flanders", "744 Evergreen Terrace", 60};
+
+// conversion: person -> json
+json j = p;
+
+std::cout << j << std::endl;
+// {"address":"744 Evergreen Terrace","age":60,"name":"Ned Flanders"}
+
+// conversion: json -> person
+auto p2 = j.template get<ns::person>();
+
+// that's it
+assert(p == p2);
+```
+
+## Basic usage
+
+To make this work with one of your types, you only need to provide two functions:
+
+```cpp
+using json = nlohmann::json;
+
+namespace ns {
+    void to_json(json& j, const person& p) {
+        j = json{ {"name", p.name}, {"address", p.address}, {"age", p.age} };
+    }
+
+    void from_json(const json& j, person& p) {
+        j.at("name").get_to(p.name);
+        j.at("address").get_to(p.address);
+        j.at("age").get_to(p.age);
+    }
+} // namespace ns
+```
+
+That's all! When calling the `json` constructor with your type, your custom `to_json` method will be automatically called.
+Likewise, when calling `template get<your_type>()` or `get_to(your_type&)`, the `from_json` method will be called.
+
+Some important things:
+
+* Those methods **MUST** be in your type's namespace (which can be the global namespace), or the library will not be able to locate them (in this example, they are in namespace `ns`, where `person` is defined).
+* Those methods **MUST** be available (e.g., proper headers must be included) everywhere you use these conversions. Look at [#1108](https://github.com/nlohmann/json/issues/1108) for errors that may occur otherwise.
+* When using `template get<your_type>()`, `your_type` **MUST** be [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible). (There is a way to bypass this requirement described later.)
+* In function `from_json`, use function [`at()`](../api/basic_json/at.md) to access the object values rather than `operator[]`. In case a key does not exist, `at` throws an exception that you can handle, whereas `operator[]` exhibits undefined behavior.
+* You do not need to add serializers or deserializers for STL types like `std::vector`: the library already implements these.
+
+
+## Simplify your life with macros
+
+If you just want to serialize/deserialize some structs, the `to_json`/`from_json` functions can be a lot of boilerplate.
+
+There are four macros to make your life easier as long as you (1) want to use a JSON object as serialization and (2) want to use the member variable names as object keys in that object:
+
+- [`NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(name, member1, member2, ...)`](../api/macros/nlohmann_define_type_non_intrusive.md) is to be defined inside the namespace of the class/struct to create code for. It will throw an exception in `from_json()` due to a missing value in the JSON object.
+- [`NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(name, member1, member2, ...)`](../api/macros/nlohmann_define_type_non_intrusive.md) is to be defined inside the namespace of the class/struct to create code for. It will not throw an exception in `from_json()` due to a missing value in the JSON object, but fills in values from object which is default-constructed by the type.
+- [`NLOHMANN_DEFINE_TYPE_INTRUSIVE(name, member1, member2, ...)`](../api/macros/nlohmann_define_type_intrusive.md) is to be defined inside the class/struct to create code for. This macro can also access private members. It will throw an exception in `from_json()` due to a missing value in the JSON object.
+- [`NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(name, member1, member2, ...)`](../api/macros/nlohmann_define_type_intrusive.md) is to be defined inside the class/struct to create code for. This macro can also access private members. It will not throw an exception in `from_json()` due to a missing value in the JSON object, but fills in values from object which is default-constructed by the type.
+
+In all macros, the first parameter is the name of the class/struct, and all remaining parameters name the members. You can read more docs about them starting from [here](macros.md#nlohmann_define_type_intrusivetype-member).
+
+!!! info "Implementation limits"
+
+    - The current macro implementations are limited to at most 64 member variables. If you want to serialize/deserialize
+      types with more than 64 member variables, you need to define the `to_json`/`from_json` functions manually.
+    - The macros only work for the [`nlohmann::json`](../api/json.md) type; other specializations such as
+      [`nlohmann::ordered_json`](../api/ordered_json.md) are currently unsupported.
+
+??? example
+
+    The `to_json`/`from_json` functions for the `person` struct above can be created with:
+
+    ```cpp
+    namespace ns {
+        NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(person, name, address, age)
+    }
+    ```
+
+    Here is an example with private members, where `NLOHMANN_DEFINE_TYPE_INTRUSIVE` is needed:
+
+    ```cpp
+    namespace ns {
+        class address {
+          private:
+            std::string street;
+            int housenumber;
+            int postcode;
+
+          public:
+            NLOHMANN_DEFINE_TYPE_INTRUSIVE(address, street, housenumber, postcode)
+        };
+    }
+    ```
+
+## How do I convert third-party types?
+
+This requires a bit more advanced technique. But first, let's see how this conversion mechanism works:
+
+The library uses **JSON Serializers** to convert types to json.
+The default serializer for `nlohmann::json` is `nlohmann::adl_serializer` (ADL means [Argument-Dependent Lookup](https://en.cppreference.com/w/cpp/language/adl)).
+
+It is implemented like this (simplified):
+
+```cpp
+template <typename T>
+struct adl_serializer {
+    static void to_json(json& j, const T& value) {
+        // calls the "to_json" method in T's namespace
+    }
+
+    static void from_json(const json& j, T& value) {
+        // same thing, but with the "from_json" method
+    }
+};
+```
+
+This serializer works fine when you have control over the type's namespace. However, what about `boost::optional` or `std::filesystem::path` (C++17)? Hijacking the `boost` namespace is pretty bad, and it's illegal to add something other than template specializations to `std`...
+
+To solve this, you need to add a specialization of `adl_serializer` to the `nlohmann` namespace, here's an example:
+
+```cpp
+// partial specialization (full specialization works too)
+NLOHMANN_JSON_NAMESPACE_BEGIN
+template <typename T>
+struct adl_serializer<boost::optional<T>> {
+    static void to_json(json& j, const boost::optional<T>& opt) {
+        if (opt == boost::none) {
+            j = nullptr;
+        } else {
+            j = *opt; // this will call adl_serializer<T>::to_json which will
+                      // find the free function to_json in T's namespace!
+        }
+    }
+
+    static void from_json(const json& j, boost::optional<T>& opt) {
+        if (j.is_null()) {
+            opt = boost::none;
+        } else {
+            opt = j.template get<T>(); // same as above, but with
+                              // adl_serializer<T>::from_json
+        }
+    }
+};
+NLOHMANN_JSON_NAMESPACE_END
+```
+
+!!! note "ABI compatibility"
+
+    Use [`NLOHMANN_JSON_NAMESPACE_BEGIN`](../api/macros/nlohmann_json_namespace_begin.md) and `NLOHMANN_JSON_NAMESPACE_END`
+    instead of `#!cpp namespace nlohmann { }` in code which may be linked with different versions of this library.
+
+## How can I use `get()` for non-default constructible/non-copyable types?
+
+There is a way, if your type is [MoveConstructible](https://en.cppreference.com/w/cpp/named_req/MoveConstructible). You will need to specialize the `adl_serializer` as well, but with a special `from_json` overload:
+
+```cpp
+struct move_only_type {
+    move_only_type() = delete;
+    move_only_type(int ii): i(ii) {}
+    move_only_type(const move_only_type&) = delete;
+    move_only_type(move_only_type&&) = default;
+
+    int i;
+};
+
+namespace nlohmann {
+    template <>
+    struct adl_serializer<move_only_type> {
+        // note: the return type is no longer 'void', and the method only takes
+        // one argument
+        static move_only_type from_json(const json& j) {
+            return {j.template get<int>()};
+        }
+
+        // Here's the catch! You must provide a to_json method! Otherwise, you
+        // will not be able to convert move_only_type to json, since you fully
+        // specialized adl_serializer on that type
+        static void to_json(json& j, move_only_type t) {
+            j = t.i;
+        }
+    };
+}
+```
+
+## Can I write my own serializer? (Advanced use)
+
+Yes. You might want to take a look at [`unit-udt.cpp`](https://github.com/nlohmann/json/blob/develop/tests/src/unit-udt.cpp) in the test suite, to see a few examples.
+
+If you write your own serializer, you'll need to do a few things:
+
+- use a different `basic_json` alias than `nlohmann::json` (the last template parameter of `basic_json` is the `JSONSerializer`)
+- use your `basic_json` alias (or a template parameter) in all your `to_json`/`from_json` methods
+- use `nlohmann::to_json` and `nlohmann::from_json` when you need ADL
+
+Here is an example, without simplifications, that only accepts types with a size <= 32, and uses ADL.
+
+```cpp
+// You should use void as a second template argument
+// if you don't need compile-time checks on T
+template<typename T, typename SFINAE = typename std::enable_if<sizeof(T) <= 32>::type>
+struct less_than_32_serializer {
+    template <typename BasicJsonType>
+    static void to_json(BasicJsonType& j, T value) {
+        // we want to use ADL, and call the correct to_json overload
+        using nlohmann::to_json; // this method is called by adl_serializer,
+                                 // this is where the magic happens
+        to_json(j, value);
+    }
+
+    template <typename BasicJsonType>
+    static void from_json(const BasicJsonType& j, T& value) {
+        // same thing here
+        using nlohmann::from_json;
+        from_json(j, value);
+    }
+};
+```
+
+Be **very** careful when reimplementing your serializer, you can stack overflow if you don't pay attention:
+
+```cpp
+template <typename T, void>
+struct bad_serializer
+{
+    template <typename BasicJsonType>
+    static void to_json(BasicJsonType& j, const T& value) {
+      // this calls BasicJsonType::json_serializer<T>::to_json(j, value);
+      // if BasicJsonType::json_serializer == bad_serializer ... oops!
+      j = value;
+    }
+
+    template <typename BasicJsonType>
+    static void from_json(const BasicJsonType& j, T& value) {
+      // this calls BasicJsonType::json_serializer<T>::from_json(j, value);
+      // if BasicJsonType::json_serializer == bad_serializer ... oops!
+      value = j.template template get<T>(); // oops!
+    }
+};
+```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/assertions.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/assertions.md
new file mode 100644
index 00000000..32b4e019
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/assertions.md
@@ -0,0 +1,140 @@
+# Runtime Assertions
+
+The code contains numerous debug assertions to ensure class invariants are valid or to detect undefined behavior.
+Whereas the former class invariants are nothing to be concerned of, the latter checks for undefined behavior are to
+detect bugs in client code.
+
+## Switch off runtime assertions
+
+Runtime assertions can be switched off by defining the preprocessor macro `NDEBUG` (see the
+[documentation of assert](https://en.cppreference.com/w/cpp/error/assert)) which is the default for release builds.
+
+## Change assertion behavior
+
+The behavior of runtime assertions can be changes by defining macro [`JSON_ASSERT(x)`](../api/macros/json_assert.md)
+before including the `json.hpp` header.
+
+## Function with runtime assertions
+
+### Unchecked object access to a const value
+
+Function [`operator[]`](../api/basic_json/operator%5B%5D.md) implements unchecked access for objects. Whereas a missing
+key is added in case of non-const objects, accessing a const object with a missing key is undefined behavior (think of a
+dereferenced null pointer) and yields a runtime assertion.
+
+If you are not sure whether an element in an object exists, use checked access with the
+[`at` function](../api/basic_json/at.md) or call the [`contains` function](../api/basic_json/contains.md) before.
+
+See also the documentation on [element access](element_access/index.md).
+
+??? example "Example 1: Missing object key"
+
+    The following code will trigger an assertion at runtime:
+
+    ```cpp
+    #include <nlohmann/json.hpp>
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+        const json j = {{"key", "value"}};
+        auto v = j["missing"];
+    }
+    ```
+
+    Output:
+
+    ```
+    Assertion failed: (m_value.object->find(key) != m_value.object->end()), function operator[], file json.hpp, line 2144.
+    ```
+
+### Constructing from an uninitialized iterator range
+
+Constructing a JSON value from an iterator range (see [constructor](../api/basic_json/basic_json.md)) with an
+uninitialized iterator is undefined behavior and yields a runtime assertion.
+
+??? example "Example 2: Uninitialized iterator range"
+
+    The following code will trigger an assertion at runtime:
+
+    ```cpp
+    #include <nlohmann/json.hpp>
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+        json::iterator it1, it2;
+        json j(it1, it2);
+    }
+    ```
+
+    Output:
+
+    ```
+    Assertion failed: (m_object != nullptr), function operator++, file iter_impl.hpp, line 368.
+    ```
+
+### Operations on uninitialized iterators
+
+Any operation on uninitialized iterators (i.e., iterators that are not associated with any JSON value) is undefined
+behavior and yields a runtime assertion.
+
+??? example "Example 3: Uninitialized iterator"
+
+    The following code will trigger an assertion at runtime:
+
+    ```cpp
+    #include <nlohmann/json.hpp>
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+      json::iterator it;
+      ++it;
+    }
+    ```
+
+    Output:
+
+    ```
+    Assertion failed: (m_object != nullptr), function operator++, file iter_impl.hpp, line 368.
+    ```
+
+## Changes
+
+### Reading from a null `FILE` or `char` pointer
+
+Reading from a null `#!cpp FILE` or `#!cpp char` pointer in C++ is undefined behavior.  Until version 3.11.4, this
+library asserted that the pointer was not `nullptr` using a runtime assertion. If assertions were disabled, this would
+result in undefined behavior. Since version 3.11.4, this library checks for `nullptr` and throws a
+[`parse_error.101`](../home/exceptions.md#jsonexceptionparse_error101) to prevent the undefined behavior.
+
+??? example "Example 4: Reading from null pointer"
+
+    The following code will trigger an assertion at runtime:
+
+    ```cpp
+    #include <iostream>
+    #include <nlohmann/json.hpp>
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+        std::FILE* f = std::fopen("nonexistent_file.json", "r");
+        try {
+            json j = json::parse(f);
+        } catch (std::exception& e) {
+            std::cerr << e.what() << std::endl;
+        }
+    }
+    ```
+
+    Output:
+
+    ```
+    [json.exception.parse_error.101] parse error: attempting to parse an empty input; check that your input string or stream contains the expected JSON
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/bjdata.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/bjdata.md
new file mode 100644
index 00000000..a89a2288
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/bjdata.md
@@ -0,0 +1,194 @@
+# BJData
+
+The [BJData format](https://neurojson.org) was derived from and improved upon
+[Universal Binary JSON(UBJSON)](https://ubjson.org) specification (Draft 12). Specifically, it introduces an optimized
+array container for efficient storage of N-dimensional packed arrays (**ND-arrays**); it also adds 4 new type markers -
+`[u] - uint16`, `[m] - uint32`, `[M] - uint64` and `[h] - float16` - to unambiguously map common binary numeric types;
+furthermore, it uses little-endian (LE) to store all numerics instead of big-endian (BE) as in UBJSON to avoid
+unnecessary conversions on commonly available platforms.
+
+Compared to other binary JSON-like formats such as MessagePack and CBOR, both BJData and UBJSON demonstrate a rare
+combination of being both binary and **quasi-human-readable**. This is because all semantic elements in BJData and
+UBJSON, including the data-type markers and name/string types are directly human-readable. Data stored in the
+BJData/UBJSON format are not only compact in size, fast to read/write, but also can be directly searched or read using
+simple processing.
+
+!!! abstract "References"
+
+    - [BJData Specification](https://neurojson.org/bjdata/draft2)
+
+## Serialization
+
+The library uses the following mapping from JSON values types to BJData types according to the BJData specification:
+
+| JSON value type | value/range                               | BJData type    | marker |
+|-----------------|-------------------------------------------|----------------|--------|
+| null            | `null`                                    | null           | `Z`    |
+| boolean         | `true`                                    | true           | `T`    |
+| boolean         | `false`                                   | false          | `F`    |
+| number_integer  | -9223372036854775808..-2147483649         | int64          | `L`    |
+| number_integer  | -2147483648..-32769                       | int32          | `l`    |
+| number_integer  | -32768..-129                              | int16          | `I`    |
+| number_integer  | -128..127                                 | int8           | `i`    |
+| number_integer  | 128..255                                  | uint8          | `U`    |
+| number_integer  | 256..32767                                | int16          | `I`    |
+| number_integer  | 32768..65535                              | uint16         | `u`    |
+| number_integer  | 65536..2147483647                         | int32          | `l`    |
+| number_integer  | 2147483648..4294967295                    | uint32         | `m`    |
+| number_integer  | 4294967296..9223372036854775807           | int64          | `L`    |
+| number_integer  | 9223372036854775808..18446744073709551615 | uint64         | `M`    |
+| number_unsigned | 0..127                                    | int8           | `i`    |
+| number_unsigned | 128..255                                  | uint8          | `U`    |
+| number_unsigned | 256..32767                                | int16          | `I`    |
+| number_unsigned | 32768..65535                              | uint16         | `u`    |
+| number_unsigned | 65536..2147483647                         | int32          | `l`    |
+| number_unsigned | 2147483648..4294967295                    | uint32         | `m`    |
+| number_unsigned | 4294967296..9223372036854775807           | int64          | `L`    |
+| number_unsigned | 9223372036854775808..18446744073709551615 | uint64         | `M`    |
+| number_float    | *any value*                               | float64        | `D`    |
+| string          | *with shortest length indicator*          | string         | `S`    |
+| array           | *see notes on optimized format/ND-array*  | array          | `[`    |
+| object          | *see notes on optimized format*           | map            | `{`    |
+
+!!! success "Complete mapping"
+
+    The mapping is **complete** in the sense that any JSON value type can be converted to a BJData value.
+
+    Any BJData output created by `to_bjdata` can be successfully parsed by `from_bjdata`.
+
+!!! warning "Size constraints"
+
+    The following values can **not** be converted to a BJData value:
+
+      - strings with more than 18446744073709551615 bytes, i.e., $2^{64}-1$ bytes (theoretical)
+
+!!! info "Unused BJData markers"
+
+    The following markers are not used in the conversion:
+
+    - `Z`: no-op values are not created.
+    - `C`: single-byte strings are serialized with `S` markers.
+
+!!! info "NaN/infinity handling"
+
+    If NaN or Infinity are stored inside a JSON number, they are serialized properly. This behavior differs from the
+    `dump()` function which serializes NaN or Infinity to `#!json null`.
+
+!!! info "Endianness"
+
+    A breaking difference between BJData and UBJSON is the endianness of numerical values. In BJData, all numerical data
+    types (integers `UiuImlML` and floating-point values `hdD`) are stored in the little-endian (LE) byte order as
+    opposed to big-endian as used by UBJSON. Adopting LE to store numeric records avoids unnecessary byte swapping on
+    most modern computers where LE is used as the default byte order.
+
+!!! info "Optimized formats"
+
+    Optimized formats for containers are supported via two parameters of
+    [`to_bjdata`](../../api/basic_json/to_bjdata.md):
+
+    - Parameter `use_size` adds size information to the beginning of a container and removes the closing marker.
+    - Parameter `use_type` further checks whether all elements of a container have the same type and adds the type
+      marker to the beginning of the container. The `use_type` parameter must only be used together with
+      `use_size = true`.
+
+    Note that `use_size = true` alone may result in larger representations - the benefit of this parameter is that the
+    receiving side is immediately informed of the number of elements in the container.
+
+!!! info "ND-array optimized format"
+
+    BJData extends UBJSON's optimized array **size** marker to support ND-arrays of uniform numerical data types
+    (referred to as *packed arrays*). For example, the 2-D `uint8` integer array `[[1,2],[3,4],[5,6]]`, stored as nested
+    optimized array in UBJSON `[ [$U#i2 1 2 [$U#i2 3 4 [$U#i2 5 6 ]`, can be further compressed in BJData to
+    `[$U#[$i#i2 2 3 1 2 3 4 5 6` or `[$U#[i2 i3] 1 2 3 4 5 6`.
+
+    To maintain type and size information, ND-arrays are converted to JSON objects following the **annotated array
+    format** (defined in the [JData specification (Draft 3)][JDataAAFmt]), when parsed using
+    [`from_bjdata`](../../api/basic_json/from_bjdata.md). For example, the above 2-D `uint8` array can be parsed and
+    accessed as
+
+    ```json
+    {
+        "_ArrayType_": "uint8",
+        "_ArraySize_": [2,3],
+        "_ArrayData_": [1,2,3,4,5,6]
+    }
+    ```
+
+    Likewise, when a JSON object in the above form is serialzed using
+    [`to_bjdata`](../../api/basic_json/to_bjdata.md), it is automatically converted into a compact BJData ND-array. The
+    only exception is, that when the 1-dimensional vector stored in `"_ArraySize_"` contains a single integer or two
+    integers with one being 1, a regular 1-D optimized array is generated.
+
+    The current version of this library does not yet support automatic detection of and conversion from a nested JSON
+    array input to a BJData ND-array.
+
+    [JDataAAFmt]: https://github.com/NeuroJSON/jdata/blob/master/JData_specification.md#annotated-storage-of-n-d-arrays)
+
+!!! info "Restrictions in optimized data types for arrays and objects"
+
+    Due to diminished space saving, hampered readability, and increased security risks, in BJData, the allowed data
+    types following the `$` marker in an optimized array and object container are restricted to
+    **non-zero-fixed-length** data types. Therefore, the valid optimized type markers can only be one of `UiuImlMLhdDC`.
+    This also means other variable (`[{SH`) or zero-length types (`TFN`) can not be used in an optimized array or object
+    in BJData.
+
+!!! info "Binary values"
+
+    If the JSON data contains the binary type, the value stored is a list of integers, as suggested by the BJData
+    documentation. In particular, this means that the serialization and the deserialization of JSON containing binary
+    values into BJData and back will result in a different JSON object.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/to_bjdata.cpp"
+    ```
+
+    Output:
+
+    ```c
+    --8<-- "examples/to_bjdata.output"
+    ```
+
+## Deserialization
+
+The library maps BJData types to JSON value types as follows:
+
+| BJData type | JSON value type                         | marker |
+|-------------|-----------------------------------------|--------|
+| no-op       | *no value, next value is read*          | `N`    |
+| null        | `null`                                  | `Z`    |
+| false       | `false`                                 | `F`    |
+| true        | `true`                                  | `T`    |
+| float16     | number_float                            | `h`    |
+| float32     | number_float                            | `d`    |
+| float64     | number_float                            | `D`    |
+| uint8       | number_unsigned                         | `U`    |
+| int8        | number_integer                          | `i`    |
+| uint16      | number_unsigned                         | `u`    |
+| int16       | number_integer                          | `I`    |
+| uint32      | number_unsigned                         | `m`    |
+| int32       | number_integer                          | `l`    |
+| uint64      | number_unsigned                         | `M`    |
+| int64       | number_integer                          | `L`    |
+| string      | string                                  | `S`    |
+| char        | string                                  | `C`    |
+| array       | array (optimized values are supported)  | `[`    |
+| ND-array    | object (in JData annotated array format)|`[$.#[.`|
+| object      | object (optimized values are supported) | `{`    |
+
+!!! success "Complete mapping"
+
+    The mapping is **complete** in the sense that any BJData value can be converted to a JSON value.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/from_bjdata.cpp"
+    ```
+
+    Output:
+
+    ```json
+    --8<-- "examples/from_bjdata.output"
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/bson.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/bson.md
new file mode 100644
index 00000000..f3b8cf18
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/bson.md
@@ -0,0 +1,96 @@
+# BSON
+
+BSON, short for Binary JSON, is a binary-encoded serialization of JSON-like documents. Like JSON, BSON supports the
+embedding of documents and arrays within other documents and arrays. BSON also contains extensions that allow
+representation of data types that are not part of the JSON spec. For example, BSON has a Date type and a BinData type.
+
+!!! abstract "References"
+
+    - [BSON Website](http://bsonspec.org) - the main source on BSON
+    - [BSON Specification](http://bsonspec.org/spec.html) - the specification
+   
+
+## Serialization
+
+The library uses the following mapping from JSON values types to BSON types:
+
+| JSON value type | value/range                               | BSON type | marker |
+|-----------------|-------------------------------------------|-----------|--------|
+| null            | `null`                                    | null      | 0x0A   |
+| boolean         | `true`, `false`                           | boolean   | 0x08   |
+| number_integer  | -9223372036854775808..-2147483649         | int64     | 0x12   |
+| number_integer  | -2147483648..2147483647                   | int32     | 0x10   |
+| number_integer  | 2147483648..9223372036854775807           | int64     | 0x12   |
+| number_unsigned | 0..2147483647                             | int32     | 0x10   |
+| number_unsigned | 2147483648..9223372036854775807           | int64     | 0x12   |
+| number_unsigned | 9223372036854775808..18446744073709551615 | --        | --     |
+| number_float    | *any value*                               | double    | 0x01   |
+| string          | *any value*                               | string    | 0x02   |
+| array           | *any value*                               | document  | 0x04   |
+| object          | *any value*                               | document  | 0x03   |
+| binary          | *any value*                               | binary    | 0x05   |
+
+!!! warning "Incomplete mapping"
+
+    The mapping is **incomplete**, since only JSON-objects (and things
+    contained therein) can be serialized to BSON.
+    Also, integers larger than 9223372036854775807 cannot be serialized to BSON,
+    and the keys may not contain U+0000, since they are serialized a
+    zero-terminated c-strings.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/to_bson.cpp"
+    ```
+    
+    Output:
+
+    ```c
+    --8<-- "examples/to_bson.output"
+    ```
+
+
+## Deserialization
+
+The library maps BSON record types to JSON value types as follows:
+
+| BSON type             | BSON marker byte | JSON value type |
+|-----------------------|------------------|-----------------|
+| double                | 0x01             | number_float    |
+| string                | 0x02             | string          |
+| document              | 0x03             | object          |
+| array                 | 0x04             | array           |
+| binary                | 0x05             | binary          |
+| undefined             | 0x06             | *unsupported*   |
+| ObjectId              | 0x07             | *unsupported*   |
+| boolean               | 0x08             | boolean         |
+| UTC Date-Time         | 0x09             | *unsupported*   |
+| null                  | 0x0A             | null            |
+| Regular Expr.         | 0x0B             | *unsupported*   |
+| DB Pointer            | 0x0C             | *unsupported*   |
+| JavaScript Code       | 0x0D             | *unsupported*   |
+| Symbol                | 0x0E             | *unsupported*   |
+| JavaScript Code       | 0x0F             | *unsupported*   |
+| int32                 | 0x10             | number_integer  |
+| Timestamp             | 0x11             | *unsupported*   |
+| 128-bit decimal float | 0x13             | *unsupported*   |
+| Max Key               | 0x7F             | *unsupported*   |
+| Min Key               | 0xFF             | *unsupported*   |
+
+!!! warning "Incomplete mapping"
+
+    The mapping is **incomplete**. The unsupported mappings are indicated in the table above.
+
+
+??? example
+
+    ```cpp
+    --8<-- "examples/from_bson.cpp"
+    ```
+
+    Output:
+
+    ```json
+    --8<-- "examples/from_bson.output"
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/cbor.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/cbor.md
new file mode 100644
index 00000000..2d0a1dae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/cbor.md
@@ -0,0 +1,181 @@
+# CBOR
+
+The Concise Binary Object Representation (CBOR) is a data format whose design goals include the possibility of extremely
+small code size, fairly small message size, and extensibility without the need for version negotiation.
+
+!!! abstract "References"
+
+      - [CBOR Website](http://cbor.io) - the main source on CBOR
+    - [CBOR Playground](http://cbor.me) - an interactive webpage to translate between JSON and CBOR
+    - [RFC 7049](https://tools.ietf.org/html/rfc7049) - the CBOR specification
+
+## Serialization
+
+The library uses the following mapping from JSON values types to CBOR types according to the CBOR specification
+([RFC 7049](https://www.rfc-editor.org/rfc/rfc7049.html)):
+
+| JSON value type | value/range                                | CBOR type                         | first byte |
+|-----------------|--------------------------------------------|-----------------------------------|------------|
+| null            | `null`                                     | Null                              | 0xF6       |
+| boolean         | `true`                                     | True                              | 0xF5       |
+| boolean         | `false`                                    | False                             | 0xF4       |
+| number_integer  | -9223372036854775808..-2147483649          | Negative integer (8 bytes follow) | 0x3B       |
+| number_integer  | -2147483648..-32769                        | Negative integer (4 bytes follow) | 0x3A       |
+| number_integer  | -32768..-129                               | Negative integer (2 bytes follow) | 0x39       |
+| number_integer  | -128..-25                                  | Negative integer (1 byte follow)  | 0x38       |
+| number_integer  | -24..-1                                    | Negative integer                  | 0x20..0x37 |
+| number_integer  | 0..23                                      | Integer                           | 0x00..0x17 |
+| number_integer  | 24..255                                    | Unsigned integer (1 byte follow)  | 0x18       |
+| number_integer  | 256..65535                                 | Unsigned integer (2 bytes follow) | 0x19       |
+| number_integer  | 65536..4294967295                          | Unsigned integer (4 bytes follow) | 0x1A       |
+| number_integer  | 4294967296..18446744073709551615           | Unsigned integer (8 bytes follow) | 0x1B       |
+| number_unsigned | 0..23                                      | Integer                           | 0x00..0x17 |
+| number_unsigned | 24..255                                    | Unsigned integer (1 byte follow)  | 0x18       |
+| number_unsigned | 256..65535                                 | Unsigned integer (2 bytes follow) | 0x19       |
+| number_unsigned | 65536..4294967295                          | Unsigned integer (4 bytes follow) | 0x1A       |
+| number_unsigned | 4294967296..18446744073709551615           | Unsigned integer (8 bytes follow) | 0x1B       |
+| number_float    | *any value representable by a float*       | Single-Precision Float            | 0xFA       |
+| number_float    | *any value NOT representable by a float*   | Double-Precision Float            | 0xFB       |
+| string          | *length*: 0..23                            | UTF-8 string                      | 0x60..0x77 |
+| string          | *length*: 23..255                          | UTF-8 string (1 byte follow)      | 0x78       |
+| string          | *length*: 256..65535                       | UTF-8 string (2 bytes follow)     | 0x79       |
+| string          | *length*: 65536..4294967295                | UTF-8 string (4 bytes follow)     | 0x7A       |
+| string          | *length*: 4294967296..18446744073709551615 | UTF-8 string (8 bytes follow)     | 0x7B       |
+| array           | *size*: 0..23                              | array                             | 0x80..0x97 |
+| array           | *size*: 23..255                            | array (1 byte follow)             | 0x98       |
+| array           | *size*: 256..65535                         | array (2 bytes follow)            | 0x99       |
+| array           | *size*: 65536..4294967295                  | array (4 bytes follow)            | 0x9A       |
+| array           | *size*: 4294967296..18446744073709551615   | array (8 bytes follow)            | 0x9B       |
+| object          | *size*: 0..23                              | map                               | 0xA0..0xB7 |
+| object          | *size*: 23..255                            | map (1 byte follow)               | 0xB8       |
+| object          | *size*: 256..65535                         | map (2 bytes follow)              | 0xB9       |
+| object          | *size*: 65536..4294967295                  | map (4 bytes follow)              | 0xBA       |
+| object          | *size*: 4294967296..18446744073709551615   | map (8 bytes follow)              | 0xBB       |
+| binary          | *size*: 0..23                              | byte string                       | 0x40..0x57 |
+| binary          | *size*: 23..255                            | byte string (1 byte follow)       | 0x58       |
+| binary          | *size*: 256..65535                         | byte string (2 bytes follow)      | 0x59       |
+| binary          | *size*: 65536..4294967295                  | byte string (4 bytes follow)      | 0x5A       |
+| binary          | *size*: 4294967296..18446744073709551615   | byte string (8 bytes follow)      | 0x5B       |
+
+Binary values with subtype are mapped to tagged values (0xD8..0xDB) depending on the subtype, followed by a byte string,
+see "binary" cells in the table above.
+
+!!! success "Complete mapping"
+
+    The mapping is **complete** in the sense that any JSON value type can be converted to a CBOR value.
+
+!!! info "NaN/infinity handling"
+
+    If NaN or Infinity are stored inside a JSON number, they are serialized properly. This behavior differs from the normal JSON serialization which serializes NaN or Infinity to `null`.
+
+!!! info "Unused CBOR types"
+
+    The following CBOR types are not used in the conversion:
+
+      - UTF-8 strings terminated by "break" (0x7F)
+      - arrays terminated by "break" (0x9F)
+      - maps terminated by "break" (0xBF)
+      - byte strings terminated by "break" (0x5F)
+      - date/time (0xC0..0xC1)
+      - bignum (0xC2..0xC3)
+      - decimal fraction (0xC4)
+      - bigfloat (0xC5)
+      - expected conversions (0xD5..0xD7)
+      - simple values (0xE0..0xF3, 0xF8)
+      - undefined (0xF7)
+      - half-precision floats (0xF9)
+      - break (0xFF)
+
+!!! info "Tagged items"
+
+    Binary subtypes will be serialized as tagged items. See [binary values](../binary_values.md#cbor) for an example.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/to_cbor.cpp"
+    ```
+    
+    Output:
+
+    ```c
+    --8<-- "examples/to_cbor.output"
+    ```
+
+## Deserialization
+
+The library maps CBOR types to JSON value types as follows:
+
+| CBOR type              | JSON value type | first byte |
+|------------------------|-----------------|------------|
+| Integer                | number_unsigned | 0x00..0x17 |
+| Unsigned integer       | number_unsigned | 0x18       |
+| Unsigned integer       | number_unsigned | 0x19       |
+| Unsigned integer       | number_unsigned | 0x1A       |
+| Unsigned integer       | number_unsigned | 0x1B       |
+| Negative integer       | number_integer  | 0x20..0x37 |
+| Negative integer       | number_integer  | 0x38       |
+| Negative integer       | number_integer  | 0x39       |
+| Negative integer       | number_integer  | 0x3A       |
+| Negative integer       | number_integer  | 0x3B       |
+| Byte string            | binary          | 0x40..0x57 |
+| Byte string            | binary          | 0x58       |
+| Byte string            | binary          | 0x59       |
+| Byte string            | binary          | 0x5A       |
+| Byte string            | binary          | 0x5B       |
+| UTF-8 string           | string          | 0x60..0x77 |
+| UTF-8 string           | string          | 0x78       |
+| UTF-8 string           | string          | 0x79       |
+| UTF-8 string           | string          | 0x7A       |
+| UTF-8 string           | string          | 0x7B       |
+| UTF-8 string           | string          | 0x7F       |
+| array                  | array           | 0x80..0x97 |
+| array                  | array           | 0x98       |
+| array                  | array           | 0x99       |
+| array                  | array           | 0x9A       |
+| array                  | array           | 0x9B       |
+| array                  | array           | 0x9F       |
+| map                    | object          | 0xA0..0xB7 |
+| map                    | object          | 0xB8       |
+| map                    | object          | 0xB9       |
+| map                    | object          | 0xBA       |
+| map                    | object          | 0xBB       |
+| map                    | object          | 0xBF       |
+| False                  | `false`         | 0xF4       |
+| True                   | `true`          | 0xF5       |
+| Null                   | `null`          | 0xF6       |
+| Half-Precision Float   | number_float    | 0xF9       |
+| Single-Precision Float | number_float    | 0xFA       |
+| Double-Precision Float | number_float    | 0xFB       |
+
+!!! warning "Incomplete mapping"
+
+    The mapping is **incomplete** in the sense that not all CBOR types can be converted to a JSON value. The following CBOR types are not supported and will yield parse errors:
+
+     - date/time (0xC0..0xC1)
+     - bignum (0xC2..0xC3)
+     - decimal fraction (0xC4)
+     - bigfloat (0xC5)
+     - expected conversions (0xD5..0xD7)
+     - simple values (0xE0..0xF3, 0xF8)
+     - undefined (0xF7)
+
+!!! warning "Object keys"
+
+    CBOR allows map keys of any type, whereas JSON only allows strings as keys in object values. Therefore, CBOR maps with keys other than UTF-8 strings are rejected.
+
+!!! warning "Tagged items"
+
+    Tagged items will throw a parse error by default. They can be ignored by passing `cbor_tag_handler_t::ignore` to function `from_cbor`. They can be stored by passing `cbor_tag_handler_t::store` to function `from_cbor`.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/from_cbor.cpp"
+    ```
+
+    Output:
+
+    ```json
+    --8<-- "examples/from_cbor.output"
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/index.md
new file mode 100644
index 00000000..e74290b0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/index.md
@@ -0,0 +1,52 @@
+# Binary Formats
+
+Though JSON is a ubiquitous data format, it is not a very compact format suitable for data exchange, for instance over
+a network. Hence, the library supports
+
+- [BJData](bjdata.md) (Binary JData),
+- [BSON](bson.md) (Binary JSON),
+- [CBOR](cbor.md) (Concise Binary Object Representation),
+- [MessagePack](messagepack.md), and
+- [UBJSON](ubjson.md) (Universal Binary JSON)
+
+to efficiently encode JSON values to byte vectors and to decode such vectors.
+
+## Comparison
+
+### Completeness
+
+| Format      | Serialization                                 | Deserialization                              |
+|-------------|-----------------------------------------------|----------------------------------------------|
+| BJData      | complete                                      | complete                                     |
+| BSON        | incomplete: top-level value must be an object | incomplete, but all JSON types are supported |
+| CBOR        | complete                                      | incomplete, but all JSON types are supported |
+| MessagePack | complete                                      | complete                                     |
+| UBJSON      | complete                                      | complete                                     |
+
+### Binary values
+
+| Format      | Binary values | Binary subtypes |
+|-------------|---------------|-----------------|
+| BJData      | not supported | not supported   |
+| BSON        | supported     | supported       |
+| CBOR        | supported     | supported       |
+| MessagePack | supported     | supported       |
+| UBJSON      | not supported | not supported   |
+
+See [binary values](../binary_values.md) for more information.
+
+### Sizes
+
+| Format             | canada.json | twitter.json | citm_catalog.json | jeopardy.json |
+|--------------------|-------------|--------------|-------------------|---------------|
+| BJData             | 53.2 %      | 91.1 %       | 78.1 %            | 96.6 %        |
+| BJData (size)      | 58.6 %      | 92.1 %       | 86.7 %            | 97.4 %        |
+| BJData (size+tyoe) | 58.6 %      | 92.1 %       | 86.5 %            | 97.4 %        |
+| BSON               | 85.8 %      | 95.2 %       | 95.8 %            | 106.7 %       |
+| CBOR               | 50.5 %      | 86.3 %       | 68.4 %            | 88.0 %        |
+| MessagePack        | 50.5 %      | 86.0 %       | 68.5 %            | 87.9 %        |
+| UBJSON             | 53.2 %      | 91.3 %       | 78.2 %            | 96.6 %        |
+| UBJSON (size)      | 58.6 %      | 92.3 %       | 86.8 %            | 97.4 %        |
+| UBJSON (size+type) | 55.9 %      | 92.3 %       | 85.0 %            | 95.0 %        |
+
+Sizes compared to minified JSON value.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/messagepack.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/messagepack.md
new file mode 100644
index 00000000..b2f69f17
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/messagepack.md
@@ -0,0 +1,143 @@
+# MessagePack
+
+MessagePack is an efficient binary serialization format. It lets you exchange data among multiple languages like JSON.
+But it's faster and smaller. Small integers are encoded into a single byte, and typical short strings require only one
+extra byte in addition to the strings themselves.
+
+!!! abstract "References"
+
+    - [MessagePack website](https://msgpack.org)
+    - [MessagePack specification](https://github.com/msgpack/msgpack/blob/master/spec.md)
+
+## Serialization
+
+The library uses the following mapping from JSON values types to MessagePack types according to the MessagePack
+specification:
+
+| JSON value type | value/range                              | MessagePack type | first byte |
+|-----------------|------------------------------------------|------------------|------------|
+| null            | `null`                                   | nil              | 0xC0       |
+| boolean         | `true`                                   | true             | 0xC3       |
+| boolean         | `false`                                  | false            | 0xC2       |
+| number_integer  | -9223372036854775808..-2147483649        | int64            | 0xD3       |
+| number_integer  | -2147483648..-32769                      | int32            | 0xD2       |
+| number_integer  | -32768..-129                             | int16            | 0xD1       |
+| number_integer  | -128..-33                                | int8             | 0xD0       |
+| number_integer  | -32..-1                                  | negative fixint  | 0xE0..0xFF |
+| number_integer  | 0..127                                   | positive fixint  | 0x00..0x7F |
+| number_integer  | 128..255                                 | uint 8           | 0xCC       |
+| number_integer  | 256..65535                               | uint 16          | 0xCD       |
+| number_integer  | 65536..4294967295                        | uint 32          | 0xCE       |
+| number_integer  | 4294967296..18446744073709551615         | uint 64          | 0xCF       |
+| number_unsigned | 0..127                                   | positive fixint  | 0x00..0x7F |
+| number_unsigned | 128..255                                 | uint 8           | 0xCC       |
+| number_unsigned | 256..65535                               | uint 16          | 0xCD       |
+| number_unsigned | 65536..4294967295                        | uint 32          | 0xCE       |
+| number_unsigned | 4294967296..18446744073709551615         | uint 64          | 0xCF       |
+| number_float    | *any value representable by a float*     | float 32         | 0xCA       |
+| number_float    | *any value NOT representable by a float* | float 64         | 0xCB       |
+| string          | *length*: 0..31                          | fixstr           | 0xA0..0xBF |
+| string          | *length*: 32..255                        | str 8            | 0xD9       |
+| string          | *length*: 256..65535                     | str 16           | 0xDA       |
+| string          | *length*: 65536..4294967295              | str 32           | 0xDB       |
+| array           | *size*: 0..15                            | fixarray         | 0x90..0x9F |
+| array           | *size*: 16..65535                        | array 16         | 0xDC       |
+| array           | *size*: 65536..4294967295                | array 32         | 0xDD       |
+| object          | *size*: 0..15                            | fix map          | 0x80..0x8F |
+| object          | *size*: 16..65535                        | map 16           | 0xDE       |
+| object          | *size*: 65536..4294967295                | map 32           | 0xDF       |
+| binary          | *size*: 0..255                           | bin 8            | 0xC4       |
+| binary          | *size*: 256..65535                       | bin 16           | 0xC5       |
+| binary          | *size*: 65536..4294967295                | bin 32           | 0xC6       |
+
+!!! success "Complete mapping"
+
+    The mapping is **complete** in the sense that any JSON value type can be converted to a MessagePack value.
+
+    Any MessagePack output created by `to_msgpack` can be successfully parsed by `from_msgpack`.
+
+!!! warning "Size constraints"
+
+    The following values can **not** be converted to a MessagePack value:
+
+      - strings with more than 4294967295 bytes
+      - byte strings with more than 4294967295 bytes
+      - arrays with more than 4294967295 elements
+      - objects with more than 4294967295 elements
+
+!!! info "NaN/infinity handling"
+
+    If NaN or Infinity are stored inside a JSON number, they are serialized properly in contrast to the
+    [dump](../../api/basic_json/dump.md) function which serializes NaN or Infinity to `null`.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/to_msgpack.cpp"
+    ```
+    
+    Output:
+
+    ```c
+    --8<-- "examples/to_msgpack.output"
+    ```
+
+## Deserialization
+
+The library maps MessagePack types to JSON value types as follows:
+
+| MessagePack type | JSON value type | first byte |
+|------------------|-----------------|------------|
+| positive fixint  | number_unsigned | 0x00..0x7F |
+| fixmap           | object          | 0x80..0x8F |
+| fixarray         | array           | 0x90..0x9F |
+| fixstr           | string          | 0xA0..0xBF |
+| nil              | `null`          | 0xC0       |
+| false            | `false`         | 0xC2       |
+| true             | `true`          | 0xC3       |
+| float 32         | number_float    | 0xCA       |
+| float 64         | number_float    | 0xCB       |
+| uint 8           | number_unsigned | 0xCC       |
+| uint 16          | number_unsigned | 0xCD       |
+| uint 32          | number_unsigned | 0xCE       |
+| uint 64          | number_unsigned | 0xCF       |
+| int 8            | number_integer  | 0xD0       |
+| int 16           | number_integer  | 0xD1       |
+| int 32           | number_integer  | 0xD2       |
+| int 64           | number_integer  | 0xD3       |
+| str 8            | string          | 0xD9       |
+| str 16           | string          | 0xDA       |
+| str 32           | string          | 0xDB       |
+| array 16         | array           | 0xDC       |
+| array 32         | array           | 0xDD       |
+| map 16           | object          | 0xDE       |
+| map 32           | object          | 0xDF       |
+| bin 8            | binary          | 0xC4       |
+| bin 16           | binary          | 0xC5       |
+| bin 32           | binary          | 0xC6       |
+| ext 8            | binary          | 0xC7       |
+| ext 16           | binary          | 0xC8       |
+| ext 32           | binary          | 0xC9       |
+| fixext 1         | binary          | 0xD4       |
+| fixext 2         | binary          | 0xD5       |
+| fixext 4         | binary          | 0xD6       |
+| fixext 8         | binary          | 0xD7       |
+| fixext 16        | binary          | 0xD8       |
+| negative fixint  | number_integer  | 0xE0-0xFF  |
+
+!!! info
+
+    Any MessagePack output created by `to_msgpack` can be successfully parsed by `from_msgpack`.
+
+
+??? example
+
+    ```cpp
+    --8<-- "examples/from_msgpack.cpp"
+    ```
+
+    Output:
+
+    ```json
+    --8<-- "examples/from_msgpack.output"
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/ubjson.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/ubjson.md
new file mode 100644
index 00000000..76956d60
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_formats/ubjson.md
@@ -0,0 +1,126 @@
+# UBJSON
+
+Universal Binary JSON (UBJSON) is a binary form directly imitating JSON, but requiring fewer bytes of data. It aims to
+achieve the generality of JSON, combined with being much easier to process than JSON.
+
+!!! abstract "References"
+
+    - [UBJSON Website](http://ubjson.org)
+
+## Serialization
+
+The library uses the following mapping from JSON values types to UBJSON types according to the UBJSON specification:
+
+| JSON value type | value/range                       | UBJSON type    | marker |
+|-----------------|-----------------------------------|----------------|--------|
+| null            | `null`                            | null           | `Z`    |
+| boolean         | `true`                            | true           | `T`    |
+| boolean         | `false`                           | false          | `F`    |
+| number_integer  | -9223372036854775808..-2147483649 | int64          | `L`    |
+| number_integer  | -2147483648..-32769               | int32          | `l`    |
+| number_integer  | -32768..-129                      | int16          | `I`    |
+| number_integer  | -128..127                         | int8           | `i`    |
+| number_integer  | 128..255                          | uint8          | `U`    |
+| number_integer  | 256..32767                        | int16          | `I`    |
+| number_integer  | 32768..2147483647                 | int32          | `l`    |
+| number_integer  | 2147483648..9223372036854775807   | int64          | `L`    |
+| number_unsigned | 0..127                            | int8           | `i`    |
+| number_unsigned | 128..255                          | uint8          | `U`    |
+| number_unsigned | 256..32767                        | int16          | `I`    |
+| number_unsigned | 32768..2147483647                 | int32          | `l`    |
+| number_unsigned | 2147483648..9223372036854775807   | int64          | `L`    |
+| number_unsigned | 2147483649..18446744073709551615  | high-precision | `H`    |
+| number_float    | *any value*                       | float64        | `D`    |
+| string          | *with shortest length indicator*  | string         | `S`    |
+| array           | *see notes on optimized format*   | array          | `[`    |
+| object          | *see notes on optimized format*   | map            | `{`    |
+
+!!! success "Complete mapping"
+
+    The mapping is **complete** in the sense that any JSON value type can be converted to a UBJSON value.
+
+    Any UBJSON output created by `to_ubjson` can be successfully parsed by `from_ubjson`.
+
+!!! warning "Size constraints"
+
+    The following values can **not** be converted to a UBJSON value:
+
+      - strings with more than 9223372036854775807 bytes (theoretical)
+
+!!! info "Unused UBJSON markers"
+
+    The following markers are not used in the conversion:
+    
+    - `Z`: no-op values are not created.
+    - `C`: single-byte strings are serialized with `S` markers.
+
+!!! info "NaN/infinity handling"
+
+    If NaN or Infinity are stored inside a JSON number, they are serialized properly. This behavior differs from the
+    `dump()` function which serializes NaN or Infinity to `null`.
+
+!!! info "Optimized formats"
+
+    The optimized formats for containers are supported: Parameter `use_size` adds size information to the beginning of a
+    container and removes the closing marker. Parameter `use_type` further checks whether all elements of a container
+    have the same type and adds the type marker to the beginning of the container. The `use_type` parameter must only be
+    used together with `use_size = true`.
+
+    Note that `use_size = true` alone may result in larger representations - the benefit of this parameter is that the
+    receiving side is immediately informed on the number of elements of the container.
+
+!!! info "Binary values"
+
+    If the JSON data contains the binary type, the value stored is a list of integers, as suggested by the UBJSON
+    documentation.  In particular, this means that serialization and the deserialization of a JSON containing binary
+    values into UBJSON and back will result in a different JSON object.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/to_ubjson.cpp"
+    ```
+
+    Output:
+
+    ```c
+    --8<-- "examples/to_ubjson.output"
+    ```
+
+## Deserialization
+
+The library maps UBJSON types to JSON value types as follows:
+
+| UBJSON type | JSON value type                         | marker |
+|-------------|-----------------------------------------|--------|
+| no-op       | *no value, next value is read*          | `N`    |
+| null        | `null`                                  | `Z`    |
+| false       | `false`                                 | `F`    |
+| true        | `true`                                  | `T`    |
+| float32     | number_float                            | `d`    |
+| float64     | number_float                            | `D`    |
+| uint8       | number_unsigned                         | `U`    |
+| int8        | number_integer                          | `i`    |
+| int16       | number_integer                          | `I`    |
+| int32       | number_integer                          | `l`    |
+| int64       | number_integer                          | `L`    |
+| string      | string                                  | `S`    |
+| char        | string                                  | `C`    |
+| array       | array (optimized values are supported)  | `[`    |
+| object      | object (optimized values are supported) | `{`    |
+
+!!! success "Complete mapping"
+
+    The mapping is **complete** in the sense that any UBJSON value can be converted to a JSON value.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/from_ubjson.cpp"
+    ```
+
+    Output:
+
+    ```json
+    --8<-- "examples/from_ubjson.output"
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_values.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_values.md
new file mode 100644
index 00000000..4a15a2ee
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/binary_values.md
@@ -0,0 +1,374 @@
+# Binary Values
+
+The library implements several [binary formats](binary_formats/index.md) that encode JSON in an efficient way. Most of
+these formats support binary values; that is, values that have semantics define outside the library and only define a
+sequence of bytes to be stored.
+
+JSON itself does not have a binary value. As such, binary values are an extension that this library implements to store
+values received by a binary format. Binary values are never created by the JSON parser, and are only part of a
+serialized JSON text if they have been created manually or via a binary format.
+
+## API for binary values
+
+```mermaid
+classDiagram
+
+class binary_t ["json::binary_t"] {
+    +void set_subtype(std::uint64_t subtype)
+    +void clear_subtype()
+    +std::uint64_t subtype() const
+    +bool has_subtype() const
+}
+
+class vector ["std::vector<uint8_t>"]
+
+vector <|-- binary_t
+```
+
+By default, binary values are stored as `std::vector<std::uint8_t>`. This type can be changed by providing a template
+parameter to the `basic_json` type. To store binary subtypes, the storage type is extended and exposed as
+`json::binary_t`:
+
+```cpp
+auto binary = json::binary_t({0xCA, 0xFE, 0xBA, 0xBE});
+auto binary_with_subtype = json::binary_t({0xCA, 0xFE, 0xBA, 0xBE}, 42);
+```
+
+There are several convenience functions to check and set the subtype:
+
+```cpp
+binary.has_subtype();                   // returns false
+binary_with_subtype.has_subtype();      // returns true
+
+binary_with_subtype.clear_subtype();
+binary_with_subtype.has_subtype();      // returns true
+
+binary_with_subtype.set_subtype(42);
+binary.set_subtype(23);
+
+binary.subtype();                       // returns 23
+```
+
+As `json::binary_t` is subclassing `std::vector<std::uint8_t>`, all member functions are available:
+
+```cpp
+binary.size();  // returns 4
+binary[1];      // returns 0xFE
+```
+
+JSON values can be constructed from `json::binary_t`:
+
+```cpp
+json j = binary;
+```
+
+Binary values are primitive values just like numbers or strings:
+
+```cpp
+j.is_binary();    // returns true
+j.is_primitive(); // returns true
+```
+
+Given a binary JSON value, the `binary_t` can be accessed by reference as via `get_binary()`:
+
+```cpp
+j.get_binary().has_subtype();  // returns true
+j.get_binary().size();         // returns 4
+```
+
+For convenience, binary JSON values can be constructed via `json::binary`:
+
+```cpp
+auto j2 = json::binary({0xCA, 0xFE, 0xBA, 0xBE}, 23);
+auto j3 = json::binary({0xCA, 0xFE, 0xBA, 0xBE});
+
+j2 == j;                        // returns true
+j3.get_binary().has_subtype();  // returns false
+j3.get_binary().subtype();      // returns std::uint64_t(-1) as j3 has no subtype
+```
+
+
+
+## Serialization
+
+Binary values are serialized differently according to the formats.
+
+### JSON
+
+JSON does not have a binary type, and this library does not introduce a new type as this would break conformance.
+Instead, binary values are serialized as an object with two keys: `bytes` holds an array of integers, and `subtype`
+is an integer or `null`.
+
+??? example
+
+    Code:
+
+    ```cpp
+    // create a binary value of subtype 42
+    json j;
+    j["binary"] = json::binary({0xCA, 0xFE, 0xBA, 0xBE}, 42);
+    
+    // serialize to standard output
+    std::cout << j.dump(2) << std::endl;
+    ```
+    
+    Output:
+    
+    ```json
+    {
+      "binary": {
+        "bytes": [202, 254, 186, 190],
+        "subtype": 42
+      }
+    }
+    ```
+
+!!! warning "No roundtrip for binary values"
+
+    The JSON parser will not parse the objects generated by binary values back to binary values. This is by design to
+    remain standards compliant. Serializing binary values to JSON is only implemented for debugging purposes.
+
+### BJData
+
+[BJData](binary_formats/bjdata.md) neither supports binary values nor subtypes, and proposes to serialize binary values
+as array of uint8 values. This translation is implemented by the library.
+
+??? example
+
+    Code:
+    
+    ```cpp
+    // create a binary value of subtype 42 (will be ignored in BJData)
+    json j;
+    j["binary"] = json::binary({0xCA, 0xFE, 0xBA, 0xBE}, 42);
+
+    // convert to BJData
+    auto v = json::to_bjdata(j);      
+    ```
+            
+    `v` is a `std::vector<std::uint8t>` with the following 20 elements:
+
+    ```c
+    0x7B                                             // '{'
+        0x69 0x06                                    // i 6 (length of the key)
+        0x62 0x69 0x6E 0x61 0x72 0x79                // "binary"
+        0x5B                                         // '['
+            0x55 0xCA 0x55 0xFE 0x55 0xBA 0x55 0xBE  // content (each byte prefixed with 'U')
+        0x5D                                         // ']'
+    0x7D                                             // '}'
+    ```
+
+    The following code uses the type and size optimization for UBJSON:
+
+    ```cpp
+    // convert to UBJSON using the size and type optimization
+    auto v = json::to_bjdata(j, true, true);
+    ```
+
+    The resulting vector has 22 elements; the optimization is not effective for examples with few values:
+
+    ```c
+    0x7B                                // '{'
+        0x23 0x69 0x01                  // '#' 'i' type of the array elements: unsigned integers
+        0x69 0x06                       // i 6 (length of the key)
+        0x62 0x69 0x6E 0x61 0x72 0x79   // "binary"
+        0x5B                            // '[' array
+            0x24 0x55                   // '$' 'U' type of the array elements: unsigned integers
+            0x23 0x69 0x04              // '#' i 4 number of array elements
+            0xCA 0xFE 0xBA 0xBE         // content
+    ```
+
+    Note that subtype (42) is **not** serialized and that UBJSON has **no binary type**, and deserializing `v` would
+    yield the following value:
+
+    ```json
+    {
+      "binary": [202, 254, 186, 190]
+    }
+    ```
+
+### BSON
+
+[BSON](binary_formats/bson.md) supports binary values and subtypes. If a subtype is given, it is used and added as
+unsigned 8-bit integer. If no subtype is given, the generic binary subtype 0x00 is used.
+
+??? example
+
+    Code:
+    
+    ```cpp
+    // create a binary value of subtype 42
+    json j;
+    j["binary"] = json::binary({0xCA, 0xFE, 0xBA, 0xBE}, 42);
+
+    // convert to BSON
+    auto v = json::to_bson(j);      
+    ```
+            
+    `v` is a `std::vector<std::uint8t>` with the following 22 elements:
+    
+    ```c
+    0x16 0x00 0x00 0x00                         // number of bytes in the document
+        0x05                                    // binary value
+            0x62 0x69 0x6E 0x61 0x72 0x79 0x00  // key "binary" + null byte
+            0x04 0x00 0x00 0x00                 // number of bytes
+            0x2a                                // subtype
+            0xCA 0xFE 0xBA 0xBE                 // content
+    0x00                                        // end of the document
+    ```
+
+    Note that the serialization preserves the subtype, and deserializing `v` would yield the following value:
+
+    ```json
+    {
+      "binary": {
+        "bytes": [202, 254, 186, 190],
+        "subtype": 42
+      }
+    }
+    ```
+
+### CBOR
+
+[CBOR](binary_formats/cbor.md) supports binary values, but no subtypes. Subtypes will be serialized as tags. Any binary
+value will be serialized as byte strings. The library will choose the smallest representation using the length of the
+byte array.
+
+??? example
+
+    Code:
+    
+    ```cpp
+    // create a binary value of subtype 42
+    json j;
+    j["binary"] = json::binary({0xCA, 0xFE, 0xBA, 0xBE}, 42);
+
+    // convert to CBOR
+    auto v = json::to_cbor(j);      
+    ```
+            
+    `v` is a `std::vector<std::uint8t>` with the following 15 elements:
+    
+    ```c
+    0xA1                                   // map(1)
+        0x66                               // text(6)
+            0x62 0x69 0x6E 0x61 0x72 0x79  // "binary"
+        0xD8 0x2A                          // tag(42)
+        0x44                               // bytes(4)
+            0xCA 0xFE 0xBA 0xBE            // content
+    ```
+
+    Note that the subtype is serialized as tag. However, parsing tagged values yield a parse error unless
+    `json::cbor_tag_handler_t::ignore` or `json::cbor_tag_handler_t::store` is passed to `json::from_cbor`.
+
+    ```json
+    {
+      "binary": {
+        "bytes": [202, 254, 186, 190],
+        "subtype": null
+      }
+    }
+    ```
+
+### MessagePack
+
+[MessagePack](binary_formats/messagepack.md) supports binary values and subtypes. If a subtype is given, the ext family
+is used. The library will choose the smallest representation among fixext1, fixext2, fixext4, fixext8, ext8, ext16, and
+ext32. The subtype is then added as signed 8-bit integer.
+
+If no subtype is given, the bin family (bin8, bin16, bin32) is used.
+
+??? example
+
+    Code:
+    
+    ```cpp
+    // create a binary value of subtype 42
+    json j;
+    j["binary"] = json::binary({0xCA, 0xFE, 0xBA, 0xBE}, 42);
+
+    // convert to MessagePack
+    auto v = json::to_msgpack(j);      
+    ```
+            
+    `v` is a `std::vector<std::uint8t>` with the following 14 elements:
+    
+    ```c
+    0x81                                   // fixmap1
+        0xA6                               // fixstr6
+            0x62 0x69 0x6E 0x61 0x72 0x79  // "binary"
+        0xD6                               // fixext4
+            0x2A                           // subtype
+            0xCA 0xFE 0xBA 0xBE            // content
+    ```
+
+    Note that the serialization preserves the subtype, and deserializing `v` would yield the following value:
+
+    ```json
+    {
+      "binary": {
+        "bytes": [202, 254, 186, 190],
+        "subtype": 42
+      }
+    }
+    ```
+
+### UBJSON
+
+[UBJSON](binary_formats/ubjson.md) neither supports binary values nor subtypes, and proposes to serialize binary values
+as array of uint8 values. This translation is implemented by the library.
+
+??? example
+
+    Code:
+    
+    ```cpp
+    // create a binary value of subtype 42 (will be ignored in UBJSON)
+    json j;
+    j["binary"] = json::binary({0xCA, 0xFE, 0xBA, 0xBE}, 42);
+
+    // convert to UBJSON
+    auto v = json::to_ubjson(j);      
+    ```
+            
+    `v` is a `std::vector<std::uint8t>` with the following 20 elements:
+    
+    ```c
+    0x7B                                             // '{'
+        0x69 0x06                                    // i 6 (length of the key)
+        0x62 0x69 0x6E 0x61 0x72 0x79                // "binary"
+        0x5B                                         // '['
+            0x55 0xCA 0x55 0xFE 0x55 0xBA 0x55 0xBE  // content (each byte prefixed with 'U')
+        0x5D                                         // ']'
+    0x7D                                             // '}'
+    ```
+
+    The following code uses the type and size optimization for UBJSON:
+
+    ```cpp
+    // convert to UBJSON using the size and type optimization
+    auto v = json::to_ubjson(j, true, true);
+    ```
+
+    The resulting vector has 23 elements; the optimization is not effective for examples with few values:
+
+    ```c
+    0x7B                                // '{'
+        0x24                            // '$' type of the object elements
+        0x5B                            // '[' array
+        0x23 0x69 0x01                  // '#' i 1 number of object elements
+        0x69 0x06                       // i 6 (length of the key)
+        0x62 0x69 0x6E 0x61 0x72 0x79   // "binary"
+            0x24 0x55                   // '$' 'U' type of the array elements: unsigned integers
+            0x23 0x69 0x04              // '#' i 4 number of array elements
+            0xCA 0xFE 0xBA 0xBE         // content
+    ```
+
+    Note that subtype (42) is **not** serialized and that UBJSON has **no binary type**, and deserializing `v` would
+    yield the following value:
+
+    ```json
+    {
+      "binary": [202, 254, 186, 190]
+    }
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/comments.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/comments.md
new file mode 100644
index 00000000..e99cceb4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/comments.md
@@ -0,0 +1,83 @@
+# Comments
+
+This library does not support comments *by default*. It does so for three reasons:
+
+1. Comments are not part of the [JSON specification](https://tools.ietf.org/html/rfc8259). You may argue that `//` or `/* */` are allowed in JavaScript, but JSON is not JavaScript.
+2. This was not an oversight: Douglas Crockford [wrote on this](https://plus.google.com/118095276221607585885/posts/RK8qyGVaGSr) in May 2012:
+
+    > I removed comments from JSON because I saw people were using them to hold parsing directives, a practice which would have destroyed interoperability.  I know that the lack of comments makes some people sad, but it shouldn't. 
+
+    > Suppose you are using JSON to keep configuration files, which you would like to annotate. Go ahead and insert all the comments you like. Then pipe it through JSMin before handing it to your JSON parser.
+
+3. It is dangerous for interoperability if some libraries would add comment support while others don't. Please check [The Harmful Consequences of the Robustness Principle](https://tools.ietf.org/html/draft-iab-protocol-maintenance-01) on this.
+
+However, you can pass set parameter `ignore_comments` to `#!c true` in the parse function to ignore `//` or `/* */` comments. Comments will then be treated as whitespace.
+
+!!! example
+
+    Consider the following JSON with comments.
+
+    ```json
+    {
+        // update in 2006: removed Pluto
+        "planets": ["Mercury", "Venus", "Earth", "Mars",
+                    "Jupiter", "Uranus", "Neptune" /*, "Pluto" */]
+    }
+    ```
+    
+    When calling `parse` without additional argument, a parse error exception is thrown. If `ignore_comments` is set to `#! true`, the comments are ignored during parsing:
+
+    ```cpp
+    #include <iostream>
+    #include "json.hpp"
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+        std::string s = R"(
+        {
+            // update in 2006: removed Pluto
+            "planets": ["Mercury", "Venus", "Earth", "Mars",
+                        "Jupiter", "Uranus", "Neptune" /*, "Pluto" */]
+        }
+        )";
+        
+        try
+        {
+            json j = json::parse(s);
+        }
+        catch (json::exception &e)
+        {
+            std::cout << e.what() << std::endl;
+        }
+        
+        json j = json::parse(s,
+                             /* callback */ nullptr,
+                             /* allow exceptions */ true,
+                             /* ignore_comments */ true);
+        std::cout << j.dump(2) << '\n';
+    }
+    ```
+
+    Output:
+    
+    ```
+    [json.exception.parse_error.101] parse error at line 3, column 9:
+    syntax error while parsing object key - invalid literal;
+    last read: '<U+000A>    {<U+000A>        /'; expected string literal
+    ```
+    
+    ```json
+    {
+      "planets": [
+        "Mercury",
+        "Venus",
+        "Earth",
+        "Mars",
+        "Jupiter",
+        "Uranus",
+        "Neptune"
+      ]
+    }
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/checked_access.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/checked_access.md
new file mode 100644
index 00000000..c4023cce
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/checked_access.md
@@ -0,0 +1,91 @@
+# Checked access: at
+
+## Overview
+
+The [`at`](../../api/basic_json/at.md) member function performs checked access; that is, it returns a reference to the
+desired value if it exists and throws a [`basic_json::out_of_range` exception](../../home/exceptions.md#out-of-range)
+otherwise.
+
+??? example "Read access"
+
+    Consider the following JSON value:
+    
+    ```json
+    {
+        "name": "Mary Smith",
+        "age": 42,
+        "hobbies": ["hiking", "reading"]
+    }
+    ```
+    
+    Assume the value is parsed to a `json` variable `j`.
+
+    | expression                    | value                                                                        |
+    |-------------------------------|------------------------------------------------------------------------------|
+    | `#!cpp j`                     | `#!json {"name": "Mary Smith", "age": 42, "hobbies": ["hiking", "reading"]}` |
+    | `#!cpp j.at("name")`          | `#!json "Mary Smith"`                                                        |
+    | `#!cpp j.at("age")`           | `#!json 42`                                                                  |
+    | `#!cpp j.at("hobbies")`       | `#!json ["hiking", "reading"]`                                               |
+    | `#!cpp j.at("hobbies").at(0)` | `#!json "hiking"`                                                            |
+    | `#!cpp j.at("hobbies").at(1)` | `#!json "reading"`                                                           |
+
+The return value is a reference, so it can be modified by the original value.
+
+??? example "Write access"
+
+    ```cpp
+    j.at("name") = "John Smith";
+    ```
+    
+    This code produces the following JSON value:
+    
+    ```json
+    {
+        "name": "John Smith",
+        "age": 42,
+        "hobbies": ["hiking", "reading"]
+    }
+    ```
+
+When accessing an invalid index (i.e., an index greater than or equal to the array size) or the passed object key is
+non-existing, an exception is thrown.
+
+??? example "Accessing via invalid index or missing key"
+
+    ```cpp
+    j.at("hobbies").at(3) = "cooking";
+    ```
+    
+    This code produces the following exception:
+    
+    ```
+    [json.exception.out_of_range.401] array index 3 is out of range
+    ```
+
+    When you [extended diagnostic messages](../../home/exceptions.md#extended-diagnostic-messages) are enabled by
+    defining [`JSON_DIAGNOSTICS`](../../api/macros/json_diagnostics.md), the exception further gives information where
+    the key or index is missing or out of range.
+    
+    ```
+    [json.exception.out_of_range.401] (/hobbies) array index 3 is out of range
+    ```
+
+## Notes
+
+
+!!! failure "Exceptions"
+
+    - [`at`](../../api/basic_json/at.md) can only be used with objects (with a string argument) or with arrays (with a
+      numeric argument). For other types, a [`basic_json::type_error`](../../home/exceptions.md#jsonexceptiontype_error304)
+      is thrown.
+    - [`basic_json::out_of_range` exception](../../home/exceptions.md#out-of-range) exceptions are thrown if the
+      provided key is not found in an object or the provided index is invalid.
+
+## Summary
+
+| scenario                          | non-const value                                | const value                                    |
+|-----------------------------------|------------------------------------------------|------------------------------------------------|
+| access to existing object key     | reference to existing value is returned        | const reference to existing value is returned  |
+| access to valid array index       | reference to existing value is returned        | const reference to existing value is returned  |
+| access to non-existing object key | `basic_json::out_of_range` exception is thrown | `basic_json::out_of_range` exception is thrown |
+| access to invalid array index     | `basic_json::out_of_range` exception is thrown | `basic_json::out_of_range` exception is thrown |
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/default_value.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/default_value.md
new file mode 100644
index 00000000..02b4fea3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/default_value.md
@@ -0,0 +1,32 @@
+# Access with default value: value
+
+## Overview
+
+In many situations such as configuration files, missing values are not exceptional, but may be treated as if a default value was present.
+
+??? example
+
+    Consider the following JSON value:
+    
+    ```json
+    {
+        "logOutput": "result.log",
+        "append": true
+    }
+    ```
+    
+    Assume the value is parsed to a `json` variable `j`.
+
+    | expression | value |
+    | ---------- | ----- |
+    | `#!cpp j`  | `#!json {"logOutput": "result.log", "append": true}` |
+    | `#!cpp j.value("logOutput", "logfile.log")`  | `#!json "result.log"` |
+    | `#!cpp j.value("append", true)`  | `#!json true` |
+    | `#!cpp j.value("append", false)`  | `#!json true` |
+    | `#!cpp j.value("logLevel", "verbose")`  | `#!json "verbose"` |
+
+## Note
+
+!!! failure "Exceptions"
+
+    - `value` can only be used with objects. For other types, a [`basic_json::type_error`](../../home/exceptions.md#jsonexceptiontype_error306) is thrown.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/index.md
new file mode 100644
index 00000000..0b39547e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/index.md
@@ -0,0 +1,9 @@
+# Element Access
+
+There are many ways elements in a JSON value can be accessed:
+
+- unchecked access via [`operator[]`](unchecked_access.md)
+- checked access via [`at`](checked_access.md)
+- access with default value via [`value`](default_value.md)
+- iterators
+- JSON pointers
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/unchecked_access.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/unchecked_access.md
new file mode 100644
index 00000000..39f06dc9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/element_access/unchecked_access.md
@@ -0,0 +1,112 @@
+# Unchecked access: operator[]
+
+## Overview
+
+Elements in a JSON object and a JSON array can be accessed via [`operator[]`](../../api/basic_json/operator%5B%5D.md)
+similar to a `#!cpp std::map` and a `#!cpp std::vector`, respectively.
+
+??? example "Read access"
+
+    Consider the following JSON value:
+    
+    ```json
+    {
+        "name": "Mary Smith",
+        "age": 42,
+        "hobbies": ["hiking", "reading"]
+    }
+    ```
+    
+    Assume the value is parsed to a `json` variable `j`.
+
+    | expression              | value                                                                        |
+    |-------------------------|------------------------------------------------------------------------------|
+    | `#!cpp j`               | `#!json {"name": "Mary Smith", "age": 42, "hobbies": ["hiking", "reading"]}` |
+    | `#!cpp j["name"]`       | `#!json "Mary Smith"`                                                        |
+    | `#!cpp j["age"]`        | `#!json 42`                                                                  |
+    | `#!cpp j["hobbies"]`    | `#!json ["hiking", "reading"]`                                               |
+    | `#!cpp j["hobbies"][0]` | `#!json "hiking"`                                                            |
+    | `#!cpp j["hobbies"][1]` | `#!json "reading"`                                                           |
+
+The return value is a reference, so it can modify the original value. In case the passed object key is non-existing, a
+`#!json null` value is inserted which can be immediately be overwritten.
+
+??? example "Write access"
+
+    ```cpp
+    j["name"] = "John Smith";
+    j["maidenName"] = "Jones";
+    ```
+    
+    This code produces the following JSON value:
+    
+    ```json
+    {
+        "name": "John Smith",
+        "maidenName": "Jones",
+        "age": 42,
+        "hobbies": ["hiking", "reading"]
+    }
+    ```
+
+When accessing an invalid index (i.e., an index greater than or equal to the array size), the JSON array is resized such
+that the passed index is the new maximal index. Intermediate values are filled with `#!json null`.
+
+??? example "Filling up arrays with `#!json null` values"
+
+    ```cpp
+    j["hobbies"][0] = "running";
+    j["hobbies"][3] = "cooking";
+    ```
+    
+    This code produces the following JSON value:
+    
+    ```json
+    {
+        "name": "John Smith",
+        "maidenName": "Jones",
+        "age": 42,
+        "hobbies": ["running", "reading", null, "cooking"]
+    }
+    ```
+
+## Notes
+
+!!! info "Design rationale"
+
+    The library behaves differently to `#!cpp std::vector` and `#!cpp std::map`:
+    
+    - `#!cpp std::vector::operator[]` never inserts a new element.
+    - `#!cpp std::map::operator[]` is not available for const values.
+    
+    The type `#!cpp json` wraps all JSON value types. It would be impossible to remove
+    [`operator[]`](../../api/basic_json/operator%5B%5D.md) for const objects. At the same time, inserting elements for
+    non-const objects is really convenient as it avoids awkward `insert` calls. To this end, we decided to have an
+    inserting non-const behavior for both arrays and objects.
+
+!!! info
+
+    The access is unchecked. In case the passed object key does not exist or the passed array index is invalid, no
+    exception is thrown.
+
+!!! danger
+
+    - It is **undefined behavior** to access a const object with a non-existing key.
+    - It is **undefined behavior** to access a const array with an invalid index.
+    - In debug mode, an **assertion** will fire in both cases. You can disable assertions by defining the preprocessor
+      symbol `#!cpp NDEBUG` or redefine the macro [`JSON_ASSERT(x)`](../macros.md#json_assertx). See the documentation
+      on [runtime assertions](../assertions.md) for more information.
+
+!!! failure "Exceptions"
+
+    `operator[]` can only be used with objects (with a string argument) or with arrays (with a numeric argument). For
+    other types, a [`basic_json::type_error`](../../home/exceptions.md#jsonexceptiontype_error305) is thrown.
+
+## Summary
+
+| scenario                          | non-const value                                                                                                                                      | const value                                                                 |
+|-----------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------|
+| access to existing object key     | reference to existing value is returned                                                                                                              | const reference to existing value is returned                               |
+| access to valid array index       | reference to existing value is returned                                                                                                              | const reference to existing value is returned                               |
+| access to non-existing object key | reference to newly inserted `#!json null` value is returned                                                                                          | **undefined behavior**; [runtime assertion](../assertions.md) in debug mode |
+| access to invalid array index     | reference to newly inserted `#!json null` value is returned; any index between previous maximal index and passed index are filled with `#!json null` | **undefined behavior**; [runtime assertion](../assertions.md) in debug mode |
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/enum_conversion.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/enum_conversion.md
new file mode 100644
index 00000000..1755bca2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/enum_conversion.md
@@ -0,0 +1,61 @@
+# Specializing enum conversion
+
+By default, enum values are serialized to JSON as integers. In some cases this could result in undesired behavior. If an
+enum is modified or re-ordered after data has been serialized to JSON, the later de-serialized JSON data may be
+undefined or a different enum value than was originally intended.
+
+It is possible to more precisely specify how a given enum is mapped to and from JSON as shown below:
+
+```cpp
+// example enum type declaration
+enum TaskState {
+    TS_STOPPED,
+    TS_RUNNING,
+    TS_COMPLETED,
+    TS_INVALID=-1,
+};
+
+// map TaskState values to JSON as strings
+NLOHMANN_JSON_SERIALIZE_ENUM( TaskState, {
+    {TS_INVALID, nullptr},
+    {TS_STOPPED, "stopped"},
+    {TS_RUNNING, "running"},
+    {TS_COMPLETED, "completed"},
+})
+```
+
+The [`NLOHMANN_JSON_SERIALIZE_ENUM()` macro](../api/macros/nlohmann_json_serialize_enum.md) declares a set of
+`to_json()` / `from_json()` functions for type `TaskState` while avoiding repetition and boilerplate serialization code.
+
+## Usage
+
+```cpp
+// enum to JSON as string
+json j = TS_STOPPED;
+assert(j == "stopped");
+
+// json string to enum
+json j3 = "running";
+assert(j3.template get<TaskState>() == TS_RUNNING);
+
+// undefined json value to enum (where the first map entry above is the default)
+json jPi = 3.14;
+assert(jPi.template get<TaskState>() == TS_INVALID );
+```
+
+## Notes
+
+Just as in [Arbitrary Type Conversions](arbitrary_types.md) above,
+
+- [`NLOHMANN_JSON_SERIALIZE_ENUM()`](../api/macros/nlohmann_json_serialize_enum.md) MUST be declared in your enum type's
+  namespace (which can be the global namespace), or the library will not be able to locate it, and it will default to
+  integer serialization.
+- It MUST be available (e.g., proper headers must be included) everywhere you use the conversions.
+
+Other Important points:
+
+- When using `template get<ENUM_TYPE>()`, undefined JSON values will default to the first pair specified in your map. Select this
+  default pair carefully.
+- If an enum or JSON value is specified more than once in your map, the first matching occurrence from the top of the
+  map will be returned when converting to or from JSON.
+- To disable the default serialization of enumerators as integers and force a compiler error instead, see [`JSON_DISABLE_ENUM_SERIALIZATION`](../api/macros/json_disable_enum_serialization.md).
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/iterators.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/iterators.md
new file mode 100644
index 00000000..ca303cb4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/iterators.md
@@ -0,0 +1,155 @@
+# Iterators
+
+## Overview
+
+A `basic_json` value is a container and allows access via iterators. Depending on the value type, `basic_json` stores zero or more values.
+
+As for other containers, `begin()` returns an iterator to the first value and `end()` returns an iterator to the value following the last value. The latter iterator is a placeholder and cannot be dereferenced. In case of null values, empty arrays, or empty objects, `begin()` will return `end()`.
+
+![Illustration from cppreference.com](../images/range-begin-end.svg)
+
+### Iteration order for objects
+
+When iterating over objects, values are ordered with respect to the `object_comparator_t` type which defaults to `std::less`. See the [types documentation](types/index.md#key-order) for more information.
+
+??? example
+
+    ```cpp
+    // create JSON object {"one": 1, "two": 2, "three": 3}
+    json j;
+    j["one"] = 1;
+    j["two"] = 2;
+    j["three"] = 3;
+    
+    for (auto it = j.begin(); it != j.end(); ++it)
+    {
+        std::cout << *it << std::endl;
+    }
+    ```
+    
+    Output:
+    
+    ```json
+    1
+    3
+    2
+    ```
+    
+    The reason for the order is the lexicographic ordering of the object keys "one", "three", "two".
+
+### Access object key during iteration
+
+The JSON iterators have two member functions, `key()` and `value()` to access the object key and stored value, respectively. When calling `key()` on a non-object iterator, an [invalid_iterator.207](../home/exceptions.md#jsonexceptioninvalid_iterator207) exception is thrown.
+
+??? example
+
+    ```cpp
+    // create JSON object {"one": 1, "two": 2, "three": 3}
+    json j;
+    j["one"] = 1;
+    j["two"] = 2;
+    j["three"] = 3;
+    
+    for (auto it = j.begin(); it != j.end(); ++it)
+    {
+        std::cout << it.key() << " : " << it.value() << std::endl;
+    }
+    ```
+    
+    Output:
+    
+    ```json
+    one : 1
+    three : 3
+    two : 2
+    ```
+
+### Range-based for loops
+
+C++11 allows using range-based for loops to iterate over a container.
+
+```cpp
+for (auto it : j_object)
+{
+    // "it" is of type json::reference and has no key() member
+    std::cout << "value: " << it << '\n';
+}
+```
+
+For this reason, the `items()` function allows accessing `iterator::key()` and `iterator::value()` during range-based for loops. In these loops, a reference to the JSON values is returned, so there is no access to the underlying iterator.
+
+```cpp
+for (auto& el : j_object.items())
+{
+    std::cout << "key: " << el.key() << ", value:" << el.value() << '\n';
+}
+```
+
+The items() function also allows using structured bindings (C++17):
+
+```cpp
+for (auto& [key, val] : j_object.items())
+{
+    std::cout << "key: " << key << ", value:" << val << '\n';
+}
+```
+
+!!! note
+
+    When iterating over an array, `key()` will return the index of the element as string. For primitive types (e.g., numbers), `key()` returns an empty string.
+    
+!!! warning
+
+    Using `items()` on temporary objects is dangerous. Make sure the object's lifetime exceeds the iteration. See [#2040](https://github.com/nlohmann/json/issues/2040) for more information.
+
+### Reverse iteration order
+
+`rbegin()` and `rend()` return iterators in the reverse sequence.
+    
+![Illustration from cppreference.com](../images/range-rbegin-rend.svg)
+
+??? example
+
+    ```cpp
+    json j = {1, 2, 3, 4};
+
+    for (auto it = j.rbegin(); it != j.rend(); ++it)
+    {
+        std::cout << *it << std::endl;
+    }
+    ```
+    
+    Output:
+    
+    ```json
+    4
+    3
+    2
+    1
+    ```
+
+### Iterating strings and binary values
+
+Note that "value" means a JSON value in this setting, not values stored in the underlying containers. That is, `*begin()` returns the complete string or binary array and is also safe the underlying string or binary array is empty.
+
+??? example
+
+    ```cpp
+    json j = "Hello, world";
+    for (auto it = j.begin(); it != j.end(); ++it)
+    {
+        std::cout << *it << std::endl;
+    }
+    ```
+    
+    Output:
+    
+    ```json
+    "Hello, world"
+    ```
+
+## Iterator invalidation
+
+| Operations | invalidated iterators |
+|------------|-----------------------|
+| `clear`    | all                   |
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/json_patch.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/json_patch.md
new file mode 100644
index 00000000..88c731a2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/json_patch.md
@@ -0,0 +1,47 @@
+# JSON Patch and Diff
+
+## Patches
+
+JSON Patch ([RFC 6902](https://tools.ietf.org/html/rfc6902)) defines a JSON document structure for expressing a sequence
+of operations to apply to a JSON document. With the `patch` function, a JSON Patch is applied to the current JSON value
+by executing all operations from the patch.
+
+??? example
+
+    The following code shows how a JSON patch is applied to a value.
+
+    ```cpp
+    --8<-- "examples/patch.cpp"
+    ```
+    
+    Output:
+
+    ```json
+    --8<-- "examples/patch.output"
+    ```
+
+## Diff
+
+The library can also calculate a JSON patch (i.e., a **diff**) given two JSON values.
+
+!!! success "Invariant"
+
+    For two JSON values *source* and *target*, the following code yields always true:
+
+    ```cüü
+    source.patch(diff(source, target)) == target;
+    ```
+
+??? example
+
+    The following code shows how a JSON patch is created as a diff for two JSON values.
+
+    ```cpp
+    --8<-- "examples/diff.cpp"
+    ```
+    
+    Output:
+
+    ```json
+    --8<-- "examples/diff.output"
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/json_pointer.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/json_pointer.md
new file mode 100644
index 00000000..4fd58f20
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/json_pointer.md
@@ -0,0 +1,126 @@
+# JSON Pointer
+
+## Introduction
+
+The library supports **JSON Pointer** ([RFC 6901](https://tools.ietf.org/html/rfc6901)) as alternative means to address
+structured values. A JSON Pointer is a string that identifies a specific value within a JSON document.
+
+Consider the following JSON document
+
+```json
+{
+    "array": ["A", "B", "C"],
+    "nested": {
+        "one": 1,
+        "two": 2,
+        "three": [true, false]
+    }
+}
+```
+
+Then every value inside the JSON document can be identified as follows:
+
+| JSON Pointer      | JSON value                                                                       |
+|-------------------|----------------------------------------------------------------------------------|
+| ``                | `#!json {"array":["A","B","C"],"nested":{"one":1,"two":2,"three":[true,false]}}` |
+| `/array`          | `#!json ["A","B","C"]`                                                           |
+| `/array/0`        | `#!json A`                                                                       |
+| `/array/1`        | `#!json B`                                                                       |
+| `/array/2`        | `#!json C`                                                                       |
+| `/nested`         | `#!json {"one":1,"two":2,"three":[true,false]}`                                  |
+| `/nested/one`     | `#!json 1`                                                                       |
+| `/nested/two`     | `#!json 2`                                                                       |
+| `/nested/three`   | `#!json [true,false]`                                                            |
+| `/nested/three/0` | `#!json true`                                                                    |
+| `/nested/three/1` | `#!json false`                                                                   |
+
+Note `/` does not identify the root (i.e., the whole document), but an object entry with empty key `""`. See
+[RFC 6901](https://tools.ietf.org/html/rfc6901) for more information.
+
+## JSON Pointer creation
+
+JSON Pointers can be created from a string:
+
+```cpp
+json::json_pointer p = "/nested/one";
+```
+
+Furthermore, a user-defined string literal can be used to achieve the same result:
+
+```cpp
+auto p = "/nested/one"_json_pointer;
+```
+
+The escaping rules of [RFC 6901](https://tools.ietf.org/html/rfc6901) are implemented. See the
+[constructor documentation](../api/json_pointer/json_pointer.md) for more information.
+
+## Value access
+
+JSON Pointers can be used in the [`at`](../api/basic_json/at.md), [`operator[]`](../api/basic_json/operator%5B%5D.md),
+and [`value`](../api/basic_json/value.md) functions just like object keys or array indices.
+
+```cpp
+// the JSON value from above
+auto j = json::parse(R"({
+    "array": ["A", "B", "C"],
+    "nested": {
+        "one": 1,
+        "two": 2,
+        "three": [true, false]
+    }
+})");
+
+// access values
+auto val = j[""_json_pointer];                              // {"array":["A","B","C"],...}
+auto val1 = j["/nested/one"_json_pointer];                  // 1
+auto val2 = j.at(json::json_pointer("/nested/three/1"));    // false
+auto val3 = j.value(json::json_pointer("/nested/four"), 0); // 0
+```
+
+## Flatten / unflatten
+
+The library implements a function [`flatten`](../api/basic_json/flatten.md) to convert any JSON document into a JSON
+object where each key is a JSON Pointer and each value is a primitive JSON value (i.e., a string, boolean, number, or
+null).
+
+```cpp
+// the JSON value from above
+auto j = json::parse(R"({
+    "array": ["A", "B", "C"],
+    "nested": {
+        "one": 1,
+        "two": 2,
+        "three": [true, false]
+    }
+})");
+
+// create flattened value
+auto j_flat = j.flatten();
+```
+
+The resulting value `j_flat` is:
+
+```json
+{
+  "/array/0": "A",
+  "/array/1": "B",
+  "/array/2": "C",
+  "/nested/one": 1,
+  "/nested/two": 2,
+  "/nested/three/0": true,
+  "/nested/three/1": false
+}
+```
+
+The reverse function, [`unflatten`](../api/basic_json/unflatten.md) recreates the original value.
+
+```cpp
+auto j_original = j_flat.unflatten();
+```
+
+## See also
+
+- Class [`json_pointer`](../api/json_pointer/index.md)
+- Function [`flatten`](../api/basic_json/flatten.md)
+- Function [`unflatten`](../api/basic_json/unflatten.md)
+- [JSON Patch](json_patch.md)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/macros.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/macros.md
new file mode 100644
index 00000000..2fea87c1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/macros.md
@@ -0,0 +1,174 @@
+# Supported Macros
+
+Some aspects of the library can be configured by defining preprocessor macros before including the `json.hpp` header.
+See also the [API documentation for macros](../api/macros/index.md) for examples and more information.
+
+## `JSON_ASSERT(x)`
+
+This macro controls which code is executed for [runtime assertions](assertions.md) of the library.
+
+See [full documentation of `JSON_ASSERT(x)`](../api/macros/json_assert.md).
+
+## `JSON_CATCH_USER(exception)`
+
+This macro overrides [`#!cpp catch`](https://en.cppreference.com/w/cpp/language/try_catch) calls inside the library.
+
+See [full documentation of `JSON_CATCH_USER(exception)`](../api/macros/json_throw_user.md).
+
+## `JSON_DIAGNOSTICS`
+
+This macro enables extended diagnostics for exception messages. Possible values are `1` to enable or `0` to disable
+(default).
+
+When enabled, exception messages contain a [JSON Pointer](json_pointer.md) to the JSON value that triggered the
+exception, see [Extended diagnostic messages](../home/exceptions.md#extended-diagnostic-messages) for an example. Note
+that enabling this macro increases the size of every JSON value by one pointer and adds some runtime overhead.
+
+The diagnostics messages can also be controlled with the CMake option `JSON_Diagnostics` (`OFF` by default) which sets
+`JSON_DIAGNOSTICS` accordingly.
+
+See [full documentation of `JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md).
+
+## `JSON_HAS_CPP_11`, `JSON_HAS_CPP_14`, `JSON_HAS_CPP_17`, `JSON_HAS_CPP_20`
+
+The library targets C++11, but also supports some features introduced in later C++ versions (e.g., `std::string_view`
+support for C++17). For these new features, the library implements some preprocessor checks to determine the C++
+standard. By defining any of these symbols, the internal check is overridden and the provided C++ version is
+unconditionally assumed. This can be helpful for compilers that only implement parts of the standard and would be
+detected incorrectly.
+
+See [full documentation of `JSON_HAS_CPP_11`, `JSON_HAS_CPP_14`, `JSON_HAS_CPP_17`, and `JSON_HAS_CPP_20`](../api/macros/json_has_cpp_11.md).
+
+## `JSON_HAS_FILESYSTEM`, `JSON_HAS_EXPERIMENTAL_FILESYSTEM`
+
+When compiling with C++17, the library provides conversions from and to `std::filesystem::path`. As compiler support
+for filesystem is limited, the library tries to detect whether `<filesystem>`/`std::filesystem` (`JSON_HAS_FILESYSTEM`)
+or `<experimental/filesystem>`/`std::experimental::filesystem` (`JSON_HAS_EXPERIMENTAL_FILESYSTEM`) should be used.
+To override the built-in check, define `JSON_HAS_FILESYSTEM` or `JSON_HAS_EXPERIMENTAL_FILESYSTEM` to `1`.
+
+See [full documentation of `JSON_HAS_FILESYSTEM` and `JSON_HAS_EXPERIMENTAL_FILESYSTEM`](../api/macros/json_has_filesystem.md).
+
+## `JSON_NOEXCEPTION`
+
+Exceptions can be switched off by defining the symbol `JSON_NOEXCEPTION`.
+
+See [full documentation of `JSON_NOEXCEPTION`](../api/macros/json_noexception.md).
+
+## `JSON_DISABLE_ENUM_SERIALIZATION`
+
+When defined, default parse and serialize functions for enums are excluded and have to be provided by the user, for example, using [`NLOHMANN_JSON_SERIALIZE_ENUM`](../api/macros/nlohmann_json_serialize_enum.md).
+
+See [full documentation of `JSON_DISABLE_ENUM_SERIALIZATION`](../api/macros/json_disable_enum_serialization.md).
+
+## `JSON_NO_IO`
+
+When defined, headers `<cstdio>`, `<ios>`, `<iosfwd>`, `<istream>`, and `<ostream>` are not included and parse functions
+relying on these headers are excluded. This is relevant for environment where these I/O functions are disallowed for
+security reasons (e.g., Intel Software Guard Extensions (SGX)).
+
+See [full documentation of `JSON_NO_IO`](../api/macros/json_no_io.md).
+
+## `JSON_SKIP_LIBRARY_VERSION_CHECK`
+
+When defined, the library will not create a compiler warning when a different version of the library was already
+included.
+
+See [full documentation of `JSON_SKIP_LIBRARY_VERSION_CHECK`](../api/macros/json_skip_library_version_check.md).
+
+## `JSON_SKIP_UNSUPPORTED_COMPILER_CHECK`
+
+When defined, the library will not create a compile error when a known unsupported compiler is detected. This allows to
+use the library with compilers that do not fully support C++11 and may only work if unsupported features are not used.
+
+See [full documentation of `JSON_SKIP_UNSUPPORTED_COMPILER_CHECK`](../api/macros/json_skip_unsupported_compiler_check.md).
+
+## `JSON_THROW_USER(exception)`
+
+This macro overrides `#!cpp throw` calls inside the library. The argument is the exception to be thrown.
+
+See [full documentation of `JSON_THROW_USER(exception)`](../api/macros/json_throw_user.md).
+
+## `JSON_TRY_USER`
+
+This macro overrides `#!cpp try` calls inside the library.
+
+See [full documentation of `JSON_TRY_USER`](../api/macros/json_throw_user.md).
+
+## `JSON_USE_IMPLICIT_CONVERSIONS`
+
+When defined to `0`, implicit conversions are switched off. By default, implicit conversions are switched on.
+
+See [full documentation of `JSON_USE_IMPLICIT_CONVERSIONS`](../api/macros/json_use_implicit_conversions.md).
+
+## `NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE(type, base_type, member...)`
+## `NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT(type, base_type, member...)`
+## `NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE(type, base_type, member...)`
+## `NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE(type, base_type, member...)`
+## `NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT(type, base_type, member...)`
+## `NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(type, base_type, member...)`
+
+## `NLOHMANN_DEFINE_TYPE_INTRUSIVE(type, member...)`
+
+This macro can be used to simplify the serialization/deserialization of types if (1) want to use a JSON object as
+serialization and (2) want to use the member variable names as object keys in that object.
+
+The macro is to be defined inside the class/struct to create code for. Unlike
+[`NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`](#nlohmann_define_type_non_intrusivetype-member), it can access private members.
+The first parameter is the name of the class/struct, and all remaining parameters name the members.
+
+See [full documentation of `NLOHMANN_DEFINE_TYPE_INTRUSIVE`](../api/macros/nlohmann_define_type_intrusive.md).
+
+## `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(type, member...)`
+
+This macro is similar to `NLOHMANN_DEFINE_TYPE_INTRUSIVE`. It will not throw an exception in `from_json()` due to a
+missing value in the JSON object, but can throw due to a mismatched type. The `from_json()` function default constructs
+an object and uses its values as the defaults when calling the [`value`](../api/basic_json/value.md) function.
+
+See [full documentation of `NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT`](../api/macros/nlohmann_define_type_intrusive.md).
+
+## `NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE(type, member...)`
+
+This macro is similar to `NLOHMANN_DEFINE_TYPE_INTRUSIVE` except that it defines only the serialization code. This is
+useful when the user type does not have a default constructor and only the serialization is required.
+
+See [full documentation of `NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE`](../api/macros//nlohmann_define_type_intrusive.md).
+
+## `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(type, member...)`
+
+This macro can be used to simplify the serialization/deserialization of types if (1) want to use a JSON object as
+serialization and (2) want to use the member variable names as object keys in that object.
+
+The macro is to be defined inside the namespace of the class/struct to create code for. Private members cannot be
+accessed. Use [`NLOHMANN_DEFINE_TYPE_INTRUSIVE`](#nlohmann_define_type_intrusivetype-member) in these scenarios. The
+first parameter is the name of the class/struct, and all remaining parameters name the members.
+
+See [full documentation of `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`](../api/macros/nlohmann_define_type_non_intrusive.md).
+
+## `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(type, member...)`
+
+This macro is similar to `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE`. It will not throw an exception in `from_json()` due to a
+missing value in the JSON object, but can throw due to a mismatched type. The `from_json()` function default constructs
+an object and uses its values as the defaults when calling the [`value`](../api/basic_json/value.md) function.
+
+See [full documentation of `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT`](../api/macros/nlohmann_define_type_non_intrusive.md).
+
+## `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(type, member...)`
+
+This macro is similar to `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE` except that it defines only the serialization code. This is
+useful when the user type does not have a default constructor and only the serialization is required.
+
+See [full documentation of `NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE`](../api/macros//nlohmann_define_type_non_intrusive.md).
+
+## `NLOHMANN_JSON_SERIALIZE_ENUM(type, ...)`
+
+This macro simplifies the serialization/deserialization of enum types. See
+[Specializing enum conversion](enum_conversion.md) for more information.
+
+See [full documentation of `NLOHMANN_JSON_SERIALIZE_ENUM`](../api/macros/nlohmann_json_serialize_enum.md).
+
+## `NLOHMANN_JSON_VERSION_MAJOR`, `NLOHMANN_JSON_VERSION_MINOR`, `NLOHMANN_JSON_VERSION_PATCH`
+
+These macros are defined by the library and contain the version numbers according to
+[Semantic Versioning 2.0.0](https://semver.org/spec/v2.0.0.html).
+
+See [full documentation of `NLOHMANN_JSON_VERSION_MAJOR`, `NLOHMANN_JSON_VERSION_MINOR`, and `NLOHMANN_JSON_VERSION_PATCH`](../api/macros/nlohmann_json_version_major.md).
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/merge_patch.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/merge_patch.md
new file mode 100644
index 00000000..84e0ab02
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/merge_patch.md
@@ -0,0 +1,20 @@
+# JSON Merge Patch
+
+The library supports JSON Merge Patch ([RFC 7386](https://tools.ietf.org/html/rfc7386)) as a patch format.
+The merge patch format is primarily intended for use with the HTTP PATCH method as a means of describing a set of modifications to a target resource's content. This function applies a merge patch to the current JSON value.
+
+Instead of using [JSON Pointer](json_pointer.md) to specify values to be manipulated, it describes the changes using a syntax that closely mimics the document being modified.
+
+??? example
+
+    The following code shows how a JSON Merge Patch is applied to a JSON document.
+
+    ```cpp
+    --8<-- "examples/merge_patch.cpp"
+    ```
+    
+    Output:
+
+    ```json
+    --8<-- "examples/merge_patch.output"
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/namespace.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/namespace.md
new file mode 100644
index 00000000..460cb3be
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/namespace.md
@@ -0,0 +1,94 @@
+# `nlohmann` Namespace
+
+The 3.11.0 release introduced an
+[inline namespace](https://en.cppreference.com/w/cpp/language/namespace#Inline_namespaces) to allow different parts of
+a codebase to safely use different versions of the JSON library as long as they never exchange instances of library
+types.
+
+## Structure
+
+The complete default namespace name is derived as follows:
+
+- The root namespace is always `nlohmann`.
+- The inline namespace starts with `json_abi` and is followed by serveral optional ABI tags according to the value of
+  these ABI-affecting macros, in order:
+    - [`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md) defined non-zero appends `_diag`.
+    - [`JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON`](../api/macros/json_use_legacy_discarded_value_comparison.md)
+      defined non-zero appends `_ldvcmp`.
+- The inline namespace ends with the suffix `_v` followed by the 3 components of the version number separated by
+  underscores. To omit the version component, see [Disabling the version component](#disabling-the-version-component)
+  below.
+
+For example, the namespace name for version 3.11.2 with `JSON_DIAGNOSTICS` defined to `1` is:
+
+```cpp
+nlohmann::json_abi_diag_v3_11_2
+```
+
+## Purpose
+
+Several incompatibilities have been observed. Amongst the most common ones is linking code compiled with different
+definitions of [`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md). This is illustrated in the diagram below.
+
+```mermaid
+graph
+    json["<strong>nlohmann_json (v3.10.5)</strong><br>JSON_DIAGNOSTICS=0"]
+    json_diag["<strong>nlohmann_json (v3.10.5)</strong><br>JSON_DIAGNOSTICS=1"]
+    library["<strong>some library</strong>"]
+    app["<strong>application</strong>"]
+    
+    library --> json
+    app --> json_diag
+    app --> library
+```
+
+In releases prior to 3.11.0, mixing any version of the JSON library with different `JSON_DIAGNOSTICS` settings would
+result in a crashing application. If `some_library` never passes instances of JSON library types to the application,
+this scenario became safe in version 3.11.0 and above due to the inline namespace yielding distinct symbol names.
+
+## Limitations
+
+Neither the compiler nor the linker will issue as much as a warning when translation units – intended to be linked
+together and that include different versions and/or configurations of the JSON library – exchange and use library
+types.
+
+There is an exception when forward declarations are used (i.e., when including `json_fwd.hpp`) in which case the linker
+may complain about undefined references.
+
+## Disabling the version component
+
+Different versions are not necessarily ABI-incompatible, but the project does not actively track changes in the ABI and
+recommends that all parts of a codebase exchanging library types be built with the same version. Users can, **at their
+own risk**, disable the version component of the linline namespace, allowing different versions – but not
+configurations – to be used in cases where the linker would otherwise output undefined reference errors.
+
+To do so, define [`NLOHMANN_JSON_NAMESPACE_NO_VERSION`](../api/macros/nlohmann_json_namespace_no_version.md) to `1`.
+
+This applies to version 3.11.2 and above only, versions 3.11.0 and 3.11.1 can apply the technique described in the next
+section to emulate the effect of the `NLOHMANN_JSON_NAMESPACE_NO_VERSION` macro.
+
+!!! danger "Use at your own risk"
+
+    Disabling the namespace version component and mixing ABI-incompatible versions will result in crashes or incorrect
+    behavior. You have been warned!
+## Disabling the inline namespace completely
+
+When interoperability with code using a pre-3.11.0 version of the library is required, users can, **at their own risk**
+restore the old namespace layout by redefining
+[`NLOHMANN_JSON_NAMESPACE_BEGIN, NLOHMANN_JSON_NAMESPACE_END`](../api/macros/nlohmann_json_namespace_begin.md) as
+follows:
+
+```cpp
+#define NLOHMANN_JSON_NAMESPACE_BEGIN  namespace nlohmann {
+#define NLOHMANN_JSON_NAMESPACE_END    }
+```
+
+!!! danger "Use at your own risk"
+
+    Overriding the namespace and mixing ABI-incompatible versions will result in crashes or incorrect behavior. You
+    have been warned!
+
+## Version history
+
+- Introduced inline namespace (`json_v3_11_0[_abi-tag]*`) in version 3.11.0.
+- Changed structure of inline namespace in version 3.11.2.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/object_order.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/object_order.md
new file mode 100644
index 00000000..3ee16a90
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/object_order.md
@@ -0,0 +1,109 @@
+# Object Order
+
+The [JSON standard](https://tools.ietf.org/html/rfc8259.html) defines objects as "an unordered collection of zero or more name/value pairs". As such, an implementation does not need to preserve any specific order of object keys.
+
+## Default behavior: sort keys
+
+The default type `nlohmann::json` uses a `std::map` to store JSON objects, and thus stores object keys **sorted alphabetically**.
+
+??? example
+
+    ```cpp
+    #include <iostream>
+    #include "json.hpp"
+    
+    using json = nlohmann::json;
+    
+    int main()
+    {
+        json j;
+        j["one"] = 1;
+        j["two"] = 2;
+        j["three"] = 3;
+        
+        std::cout << j.dump(2) << '\n';
+    }
+    ```
+    
+    Output:
+
+    ```json
+    {
+      "one": 1,
+      "three": 3,
+      "two": 2
+    }
+    ```
+
+## Alternative behavior: preserve insertion order
+
+If you do want to preserve the **insertion order**, you can try the type [`nlohmann::ordered_json`](https://github.com/nlohmann/json/issues/2179).
+
+??? example
+
+    ```cpp
+    --8<-- "examples/ordered_json.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/ordered_json.output"
+    ```
+
+Alternatively, you can use a more sophisticated ordered map like [`tsl::ordered_map`](https://github.com/Tessil/ordered-map) ([integration](https://github.com/nlohmann/json/issues/546#issuecomment-304447518)) or [`nlohmann::fifo_map`](https://github.com/nlohmann/fifo_map) ([integration](https://github.com/nlohmann/json/issues/485#issuecomment-333652309)).
+
+### Notes on parsing
+
+Note that you also need to call the right [`parse`](../api/basic_json/parse.md) function when reading from a file.
+Assume file `input.json` contains the JSON object above:
+
+```json
+{
+  "one": 1,
+  "two": 2,
+  "three": 3
+}
+```
+
+!!! success "Right way"
+
+    The following code correctly calls the `parse` function from `nlohmann::ordered_json`:
+
+    ```cpp
+    std::ifstream i("input.json");
+    auto j = nlohmann::ordered_json::parse(i);
+    std::cout << j.dump(2) << std::endl;
+    ```
+
+    The output will be:
+
+    ```json
+    {
+      "one": 1,
+      "two": 2,
+      "three": 3
+    }
+    ```
+
+??? failure "Wrong way"
+
+    The following code incorrectly calls the `parse` function from `nlohmann::json` which does not preserve the
+    insertion order, but sorts object keys. Assigning the result to `nlohmann::ordered_json` compiles, but does not
+    restore the order from the input file.
+
+    ```cpp
+    std::ifstream i("input.json");
+    nlohmann::ordered_json j = nlohmann::json::parse(i);
+    std::cout << j.dump(2) << std::endl;
+    ```
+
+    The output will be:
+
+    ```json
+    {
+      "one": 1,
+      "three": 3
+      "two": 2,
+    }
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/index.md
new file mode 100644
index 00000000..29493520
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/index.md
@@ -0,0 +1,13 @@
+# Parsing
+
+!!! note
+
+    This page is under construction.
+
+## Input
+
+## SAX vs. DOM parsing
+
+## Exceptions
+
+See [parsing and exceptions](parse_exceptions.md).
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/json_lines.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/json_lines.md
new file mode 100644
index 00000000..659d3179
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/json_lines.md
@@ -0,0 +1,49 @@
+# JSON Lines
+
+The [JSON Lines](https://jsonlines.org) format is a text format of newline-delimited JSON. In particular:
+
+1. The input must be UTF-8 encoded.
+2. Every line must be a valid JSON value.
+3. The line separator must be `\n`. As `\r` is silently ignored, `\r\n` is also supported.
+4. The final character may be `\n`, but is not required to be one.
+
+!!! example "JSON Text example"
+
+    ```json
+    {"name": "Gilbert", "wins": [["straight", "7♣"], ["one pair", "10♥"]]}
+    {"name": "Alexa", "wins": [["two pair", "4♠"], ["two pair", "9♠"]]}
+    {"name": "May", "wins": []}
+    {"name": "Deloise", "wins": [["three of a kind", "5♣"]]}
+    ```
+
+JSON Lines input with more than one value is treated as invalid JSON by the [`parse`](../../api/basic_json/parse.md) or
+[`accept`](../../api/basic_json/accept.md) functions. To process it line by line, functions like
+[`std::getline`](https://en.cppreference.com/w/cpp/string/basic_string/getline) can be used:
+
+!!! example "Example: Parse JSON Text input line by line"
+
+    The example below demonstrates how JSON Lines can be processed.
+
+    ```cpp
+    --8<-- "examples/json_lines.cpp"
+    ```
+    
+    Output:
+
+    ```json
+    --8<-- "examples/json_lines.output"
+    ```
+
+!!! warning "Note"
+
+    Using [`operator>>`](../../api/operator_gtgt.md) like
+    
+    ```cpp
+    json j;
+    while (input >> j)
+    {
+        std::cout << j << std::endl;
+    }
+    ```
+    
+    with a JSON Lines input does not work, because the parser will try to parse one value after the last one.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/parse_exceptions.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/parse_exceptions.md
new file mode 100644
index 00000000..61c0ff29
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/parse_exceptions.md
@@ -0,0 +1,121 @@
+# Parsing and Exceptions
+
+When the input is not valid JSON, an exception of type [`parse_error`](../../home/exceptions.md#parse-errors) is thrown.
+This exception contains the position in the input where the error occurred, together with a diagnostic message and the
+last read input token. The exceptions page contains a
+[list of examples for parse error exceptions](../../home/exceptions.md#parse-errors). In case you process untrusted
+input, always enclose your code with a `#!cpp try`/`#!cpp catch` block, like
+
+```cpp
+json j;
+try
+{
+    j = json::parse(my_input);
+}
+catch (json::parse_error& ex)
+{
+    std::cerr << "parse error at byte " << ex.byte << std::endl;
+}
+```
+
+In case exceptions are undesired or not supported by the environment, there are different ways to proceed:
+
+
+## Switch off exceptions
+
+The `parse()` function accepts a `#!cpp bool` parameter `allow_exceptions` which controls whether an exception is
+thrown when a parse error occurs (`#!cpp true`, default) or whether a discarded value should be returned
+(`#!cpp false`).
+
+```cpp
+json j = json::parse(my_input, nullptr, false);
+if (j.is_discarded())
+{
+    std::cerr << "parse error" << std::endl;
+}
+```
+
+Note there is no diagnostic information available in this scenario.
+
+## Use accept() function
+
+Alternatively, function `accept()` can be used which does not return a `json` value, but a `#!cpp bool` indicating
+whether the input is valid JSON.
+
+```cpp
+if (!json::accept(my_input))
+{
+    std::cerr << "parse error" << std::endl;
+}
+```
+
+Again, there is no diagnostic information available.
+
+
+## User-defined SAX interface
+
+Finally, you can implement the [SAX interface](sax_interface.md) and decide what should happen in case of a parse error.
+
+This function has the following interface:
+
+```cpp
+bool parse_error(std::size_t position,
+                 const std::string& last_token,
+                 const json::exception& ex);
+```
+
+The return value indicates whether the parsing should continue, so the function should usually return `#!cpp false`.
+
+??? example
+
+    ```cpp
+    #include <iostream>
+    #include "json.hpp"
+    
+    using json = nlohmann::json;
+    
+    class sax_no_exception : public nlohmann::detail::json_sax_dom_parser<json>
+    {
+      public:
+        sax_no_exception(json& j)
+          : nlohmann::detail::json_sax_dom_parser<json>(j, false)
+        {}
+        
+        bool parse_error(std::size_t position,
+                         const std::string& last_token,
+                         const json::exception& ex)
+        {
+            std::cerr << "parse error at input byte " << position << "\n"
+                      << ex.what() << "\n"
+                      << "last read: \"" << last_token << "\""
+                      << std::endl;
+            return false;
+        }
+    };
+    
+    int main()
+    {
+        std::string myinput = "[1,2,3,]";
+    
+        json result;
+        sax_no_exception sax(result);
+        
+        bool parse_result = json::sax_parse(myinput, &sax);
+        if (!parse_result)
+        {
+            std::cerr << "parsing unsuccessful!" << std::endl;
+        }
+        
+        std::cout << "parsed value: " << result << std::endl;
+    }
+    ```
+
+    Output:
+    
+    ```
+    parse error at input byte 8
+    [json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal
+    last read: "3,]"
+    parsing unsuccessful!
+    parsed value: [1,2,3]
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/parser_callbacks.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/parser_callbacks.md
new file mode 100644
index 00000000..ef076d12
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/parser_callbacks.md
@@ -0,0 +1,83 @@
+# Parser Callbacks
+
+## Overview
+
+With a parser callback function, the result of parsing a JSON text can be influenced. When passed to `parse`, it is
+called on certain events (passed as `parse_event_t` via parameter `event`) with a set recursion depth `depth` and
+context JSON value `parsed`. The return value of the callback function is a boolean indicating whether the element that
+emitted the callback shall be kept or not.
+
+The type of the callback function is:
+
+```cpp
+template<typename BasicJsonType>
+using parser_callback_t =
+    std::function<bool(int depth, parse_event_t event, BasicJsonType& parsed)>;
+```
+
+
+## Callback event types
+
+We distinguish six scenarios (determined by the event type) in which the callback function can be called. The following
+table describes the values of the parameters `depth`, `event`, and `parsed`.
+
+| parameter `event`             | description                                               | parameter `depth`                         | parameter `parsed`               |
+|-------------------------------|-----------------------------------------------------------|-------------------------------------------|----------------------------------|
+| `parse_event_t::object_start` | the parser read `{` and started to process a JSON object  | depth of the parent of the JSON object    | a JSON value with type discarded |
+| `parse_event_t::key`          | the parser read a key of a value in an object             | depth of the currently parsed JSON object | a JSON string containing the key |
+| `parse_event_t::object_end`   | the parser read `}` and finished processing a JSON object | depth of the parent of the JSON object    | the parsed JSON object           |
+| `parse_event_t::array_start`  | the parser read `[` and started to process a JSON array   | depth of the parent of the JSON array     | a JSON value with type discarded |
+| `parse_event_t::array_end`    | the parser read `]` and finished processing a JSON array  | depth of the parent of the JSON array     | the parsed JSON array            |
+| `parse_event_t::value`        | the parser finished reading a JSON value                  | depth of the value                        | the parsed JSON value            |
+
+??? example
+
+    When parsing the following JSON text,
+    
+    ```json
+    {
+        "name": "Berlin",
+        "location": [
+            52.519444,
+            13.406667
+        ]
+    }
+    ```
+    
+    these calls are made to the callback function:
+    
+    | event          | depth | parsed |
+    | -------------- | ----- | ------ |
+    | `object_start` | 0     | *discarded* |
+    | `key`          | 1     | `#!json "name"` |
+    | `value`        | 1     | `#!json "Berlin"` |
+    | `key`          | 1     | `#!json "location"` |
+    | `array_start`  | 1     | *discarded* |
+    | `value`        | 2     | `#!json 52.519444` |
+    | `value`        | 2     | `#!json 13.406667` |
+    | `array_end`    | 1     | `#!json [52.519444,13.406667]` |
+    | `object_end`   | 0     | `#!json {"location":[52.519444,13.406667],"name":"Berlin"}` |
+
+## Return value
+
+Discarding a value (i.e., returning `#!c false`) has different effects depending on the context in which the function
+was called:
+
+- Discarded values in structured types are skipped. That is, the parser will behave as if the discarded value was never
+  read.
+- In case a value outside a structured type is skipped, it is replaced with `#!json null`. This case happens if the
+  top-level element is skipped.
+
+??? example
+
+    The example below demonstrates the `parse()` function with and without callback function.
+
+    ```cpp
+    --8<-- "examples/parse__string__parser_callback_t.cpp"
+    ```
+    
+    Output:
+
+    ```json
+    --8<-- "examples/parse__string__parser_callback_t.output"
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/sax_interface.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/sax_interface.md
new file mode 100644
index 00000000..5a9c83a7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/parsing/sax_interface.md
@@ -0,0 +1,76 @@
+# SAX Interface
+
+The library uses a SAX-like interface with the following functions:
+
+```mermaid
+classDiagram
+
+class sax_t ["json::sax_t"] {
+    <<interface>>
+    +bool null()*
+    
+    +bool boolean(bool val)*
+    
+    +bool number_integer(number_integer_t val)*
+    +bool number_unsigned(number_unsigned_t val)*
+    
+    +bool number_float(number_float_t val, const string_t& s)*
+    
+    +bool string(string_t& val)*
+    +bool binary(binary_t& val)*
+    
+    +bool start_object(std::size_t elements)*
+    +bool end_object()*
+    +bool start_array(std::size_t elements)*
+    +bool end_array()*
+    +bool key(string_t& val)*
+    
+    +bool parse_error(std::size_t position, const std::string& last_token, const json::exception& ex)*
+}
+```
+
+```cpp
+// called when null is parsed
+bool null();
+
+// called when a boolean is parsed; value is passed
+bool boolean(bool val);
+
+// called when a signed or unsigned integer number is parsed; value is passed
+bool number_integer(number_integer_t val);
+bool number_unsigned(number_unsigned_t val);
+
+// called when a floating-point number is parsed; value and original string is passed
+bool number_float(number_float_t val, const string_t& s);
+
+// called when a string is parsed; value is passed and can be safely moved away
+bool string(string_t& val);
+// called when a binary value is parsed; value is passed and can be safely moved away
+bool binary(binary& val);
+
+// called when an object or array begins or ends, resp. The number of elements is passed (or -1 if not known)
+bool start_object(std::size_t elements);
+bool end_object();
+bool start_array(std::size_t elements);
+bool end_array();
+// called when an object key is parsed; value is passed and can be safely moved away
+bool key(string_t& val);
+
+// called when a parse error occurs; byte position, the last token, and an exception is passed
+bool parse_error(std::size_t position, const std::string& last_token, const json::exception& ex);
+```
+
+The return value of each function determines whether parsing should proceed.
+
+To implement your own SAX handler, proceed as follows:
+
+1. Implement the SAX interface in a class. You can use class `nlohmann::json_sax<json>` as base class, but you can also use any class where the functions described above are implemented and public.
+2. Create an object of your SAX interface class, e.g. `my_sax`.
+3. Call `#!cpp bool json::sax_parse(input, &my_sax);` where the first parameter can be any input like a string or an input stream and the second parameter is a pointer to your SAX interface.
+
+Note the `sax_parse` function only returns a `#!cpp bool` indicating the result of the last executed SAX event. It does not return `json` value - it is up to you to decide what to do with the SAX events. Furthermore, no exceptions are thrown in case of a parse error - it is up to you what to do with the exception object passed to your `parse_error` implementation. Internally, the SAX interface is used for the DOM parser (class `json_sax_dom_parser`) as well as the acceptor (`json_sax_acceptor`), see file `json_sax.hpp`.
+
+## See also
+
+- [json_sax](../../api/json_sax/index.md) - documentation of the SAX interface
+- [sax_parse](../../api/basic_json/sax_parse.md) - SAX parser
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/types/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/types/index.md
new file mode 100644
index 00000000..1a2a8119
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/types/index.md
@@ -0,0 +1,271 @@
+# Types
+
+This page gives an overview how JSON values are stored and how this can be configured.
+
+## Overview
+
+By default, JSON values are stored as follows:
+
+| JSON type | C++ type                                      |
+|-----------|-----------------------------------------------|
+| object    | `std::map<std::string, basic_json>`           |
+| array     | `std::vector<basic_json>`                     |
+| null      | `std::nullptr_t`                              |
+| string    | `std::string`                                 |
+| boolean   | `bool`                                        |
+| number    | `std::int64_t`, `std::uint64_t`, and `double` |
+
+Note there are three different types for numbers - when parsing JSON text, the best fitting type is chosen.
+
+## Storage
+
+```mermaid
+classDiagram
+
+class value_t {
+    <<enumeration>>
+    null
+    object
+    array
+    string
+    boolean
+    number_integer
+    number_unsigned
+    number_float
+    binary
+    discarded
+}
+
+class json_value {
+    <<union>>
+    object_t* object
+    array_t* array
+    string_t* string
+    binary_t* binary
+    boolean_t boolean
+    number_integer_t number_integer
+    number_unsigned_t number_unsigned
+    number_float_t number_float
+}
+
+class basic_json {
+    -value_t m_type
+    -json_value m_value
+    +typedef object_t
+    +typedef array_t
+    +typedef binary_t
+    +typedef boolean_t
+    +typedef number_integer_t
+    +typedef number_unsigned_t
+    +typedef number_float_t
+}
+
+basic_json .. json_value
+basic_json .. value_t
+```
+
+## Template arguments
+
+The data types to store a JSON value are derived from the template arguments passed to class `basic_json`:
+
+```cpp
+template<
+    template<typename U, typename V, typename... Args> class ObjectType = std::map,
+    template<typename U, typename... Args> class ArrayType = std::vector,
+    class StringType = std::string,
+    class BooleanType = bool,
+    class NumberIntegerType = std::int64_t,
+    class NumberUnsignedType = std::uint64_t,
+    class NumberFloatType = double,
+    template<typename U> class AllocatorType = std::allocator,
+    template<typename T, typename SFINAE = void> class JSONSerializer = adl_serializer,
+    class BinaryType = std::vector<std::uint8_t>
+>
+class basic_json;
+```
+
+Type `json` is an alias for `basic_json<>` and uses the default types.
+
+From the template arguments, the following types are derived:
+
+```cpp
+using object_comparator_t = std::less<>;
+using object_t = ObjectType<StringType, basic_json, object_comparator_t,
+                   AllocatorType<std::pair<const StringType, basic_json>>>;
+
+using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
+
+using string_t = StringType;
+
+using boolean_t = BooleanType;
+
+using number_integer_t = NumberIntegerType;
+using number_unsigned_t = NumberUnsignedType;
+using number_float_t = NumberFloatType;
+
+using binary_t = nlohmann::byte_container_with_subtype<BinaryType>;
+```
+
+
+## Objects
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes JSON objects as follows:
+
+> An object is an unordered collection of zero or more name/value pairs, where a name is a string and a value is a string, number, boolean, null, object, or array.
+
+### Default type
+
+With the default values for *ObjectType* (`std::map`), *StringType* (`std::string`), and *AllocatorType* (`std::allocator`), the default value for `object_t` is:
+
+```cpp
+std::map<
+  std::string, // key_type
+  basic_json, // value_type
+  std::less<>, // key_compare
+  std::allocator<std::pair<const std::string, basic_json>> // allocator_type
+>
+```
+
+### Behavior
+
+The choice of `object_t` influences the behavior of the JSON class. With the default type, objects have the following behavior:
+
+- When all names are unique, objects will be interoperable in the sense that all software implementations receiving that object will agree on the name-value mappings.
+- When the names within an object are not unique, it is unspecified which one of the values for a given key will be chosen. For instance, `#!json {"key": 2, "key": 1}` could be equal to either `#!json {"key": 1}` or `#!json {"key": 2}`.
+- Internally, name/value pairs are stored in lexicographical order of the names. Objects will also be serialized (see `dump`) in this order. For instance, both `#!json {"b": 1, "a": 2}` and `#!json {"a": 2, "b": 1}` will be stored and serialized as `#!json {"a": 2, "b": 1}`.
+- When comparing objects, the order of the name/value pairs is irrelevant. This makes objects interoperable in the sense that they will not be affected by these differences. For instance, `#!json {"b": 1, "a": 2}` and `#!json {"a": 2, "b": 1}` will be treated as equal.
+
+### Key order
+
+The order name/value pairs are added to the object is *not* preserved by the library. Therefore, iterating an object may return name/value pairs in a different order than they were originally stored. In fact, keys will be traversed in alphabetical order as `std::map` with `std::less` is used by default. Please note this behavior conforms to [RFC 8259](https://tools.ietf.org/html/rfc8259), because any order implements the specified "unordered" nature of JSON objects.
+
+### Limits
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) specifies:
+
+> An implementation may set limits on the maximum depth of nesting.
+
+In this class, the object's limit of nesting is not explicitly constrained. However, a maximum depth of nesting may be introduced by the compiler or runtime environment. A theoretical limit can be queried by calling the `max_size` function of a JSON object.
+
+### Storage
+
+Objects are stored as pointers in a `basic_json` type. That is, for any access to object values, a pointer of type `object_t*` must be dereferenced.
+
+
+## Arrays
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes JSON arrays as follows:
+
+> An array is an ordered sequence of zero or more values.
+
+### Default type
+
+With the default values for *ArrayType* (`std::vector`) and *AllocatorType* (`std::allocator`), the default value for `array_t` is:
+
+```cpp
+std::vector<
+  basic_json, // value_type
+  std::allocator<basic_json> // allocator_type
+>
+```
+
+### Limits
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) specifies:
+
+> An implementation may set limits on the maximum depth of nesting.
+
+In this class, the array's limit of nesting is not explicitly constrained. However, a maximum depth of nesting may be introduced by the compiler or runtime environment. A theoretical limit can be queried by calling the `max_size` function of a JSON array.
+
+### Storage
+
+Arrays are stored as pointers in a `basic_json` type. That is, for any access to array values, a pointer of type `array_t*` must be dereferenced.
+
+
+## Strings
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes JSON strings as follows:
+
+> A string is a sequence of zero or more Unicode characters.
+
+Unicode values are split by the JSON class into byte-sized characters during deserialization.
+
+### Default type
+
+With the default values for *StringType* (`std::string`), the default value for `string_t` is `#!cpp std::string`.
+
+### Encoding
+
+Strings are stored in UTF-8 encoding. Therefore, functions like `std::string::size()` or `std::string::length()` return the number of **bytes** in the string rather than the number of characters or glyphs.
+
+### String comparison
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) states:
+
+> Software implementations are typically required to test names of object members for equality. Implementations that transform the textual representation into sequences of Unicode code units and then perform the comparison numerically, code unit by code unit, are interoperable in the sense that implementations will agree in all cases on equality or inequality of two strings. For example, implementations that compare strings with escaped characters unconverted may incorrectly find that `"a\\b"` and `"a\u005Cb"` are not equal.
+
+This implementation is interoperable as it does compare strings code unit by code unit.
+
+### Storage
+
+String values are stored as pointers in a `basic_json` type. That is, for any access to string values, a pointer of type `string_t*` must be dereferenced.
+
+
+## Booleans
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) implicitly describes a boolean as a type which differentiates the two literals `true` and `false`.
+
+### Default type
+
+With the default values for *BooleanType* (`#!cpp bool`), the default value for `boolean_t` is `#!cpp bool`.
+
+### Storage
+
+Boolean values are stored directly inside a `basic_json` type.
+
+## Numbers
+
+See the [number handling](number_handling.md) article for a detailed discussion on how numbers are handled by this library.
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) describes numbers as follows:
+
+> The representation of numbers is similar to that used in most programming languages. A number is represented in base 10 using decimal digits. It contains an integer component that may be prefixed with an optional minus sign, which may be followed by a fraction part and/or an exponent part. Leading zeros are not allowed. (...) Numeric values that cannot be represented in the grammar below (such as Infinity and NaN) are not permitted.
+
+This description includes both integer and floating-point numbers. However, C++ allows more precise storage if it is known whether the number is a signed integer, an unsigned integer or a floating-point number. Therefore, three different types, `number_integer_t`, `number_unsigned_t`, and `number_float_t` are used.
+
+### Default types
+
+With the default values for *NumberIntegerType* (`std::int64_t`), the default value for `number_integer_t` is `std::int64_t`.
+With the default values for *NumberUnsignedType* (`std::uint64_t`), the default value for `number_unsigned_t` is `std::uint64_t`.
+With the default values for *NumberFloatType* (`#!cpp double`), the default value for `number_float_t` is `#!cpp double`.
+
+### Default behavior
+
+- The restrictions about leading zeros is not enforced in C++. Instead, leading zeros in integer literals lead to an interpretation as octal number. Internally, the value will be stored as decimal number. For instance, the C++ integer literal `#!c 010` will be serialized to `#!c 8`. During deserialization, leading zeros yield an error.
+- Not-a-number (NaN) values will be serialized to `#!json null`.
+
+### Limits
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) specifies:
+
+> An implementation may set limits on the range and precision of numbers.
+
+When the default type is used, the maximal integer number that can be stored is `#!c 9223372036854775807` (`INT64_MAX`) and the minimal integer number that can be stored is `#!c -9223372036854775808` (`INT64_MIN`). Integer numbers that are out of range will yield over/underflow when used in a constructor. During deserialization, too large or small integer numbers will be automatically be stored as `number_unsigned_t` or `number_float_t`.
+
+When the default type is used, the maximal unsigned integer number that can be stored is `#!c 18446744073709551615` (`UINT64_MAX`) and the minimal integer number that can be stored is `#!c 0`. Integer numbers that are out of range will yield over/underflow when used in a constructor. During deserialization, too large or small integer numbers will be automatically be stored as `number_integer_t` or `number_float_t`.
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) further states:
+
+> Note that when such software is used, numbers that are integers and are in the range $[-2^{53}+1, 2^{53}-1]$ are interoperable in the sense that implementations will agree exactly on their numeric values.
+
+As this range is a subrange of the exactly supported range [`INT64_MIN`, `INT64_MAX`], this class's integer type is interoperable.
+
+[RFC 8259](https://tools.ietf.org/html/rfc8259) states:
+
+> This specification allows implementations to set limits on the range and precision of numbers accepted. Since software that implements IEEE 754-2008 binary64 (double precision) numbers is generally available and widely used, good interoperability can be achieved by implementations that expect no more precision or range than these provide, in the sense that implementations will approximate JSON numbers within the expected precision.
+
+This implementation does exactly follow this approach, as it uses double precision floating-point numbers. Note values smaller than `#!c -1.79769313486232e+308` and values greater than `#!c 1.79769313486232e+308` will be stored as NaN internally and be serialized to `#!json null`.
+
+### Storage
+
+Integer number values, unsigned integer number values, and floating-point number values are stored directly inside a `basic_json` type.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/types/number_handling.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/types/number_handling.md
new file mode 100644
index 00000000..3dcca76a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/features/types/number_handling.md
@@ -0,0 +1,328 @@
+# Number Handling
+
+This document describes how the library is handling numbers.
+
+## Background
+
+This section briefly summarizes how the JSON specification describes how numbers should be handled.
+
+### JSON number syntax
+
+JSON defines the syntax of numbers as follows:
+
+!!! quote "[RFC 8259](https://tools.ietf.org/html/rfc8259#section-6), Section 6"
+
+    The representation of numbers is similar to that used in most
+    programming languages.  A number is represented in base 10 using
+    decimal digits.  It contains an integer component that may be
+    prefixed with an optional minus sign, which may be followed by a
+    fraction part and/or an exponent part.  Leading zeros are not
+    allowed.
+
+    A fraction part is a decimal point followed by one or more digits.
+    
+    An exponent part begins with the letter E in uppercase or lowercase,
+    which may be followed by a plus or minus sign.  The E and optional
+    sign are followed by one or more digits.
+
+The following railroad diagram from [json.org](https://json.org) visualizes the number syntax:
+
+![Syntax for JSON numbers](../../images/json_syntax_number.png)
+
+### Number interoperability
+
+On number interoperability, the following remarks are made:
+
+!!! quote "[RFC 8259](https://tools.ietf.org/html/rfc8259#section-6), Section 6"
+
+    This specification allows implementations to set limits on the range
+    and precision of numbers accepted.  Since software that implements
+    IEEE 754 binary64 (double precision) numbers [IEEE754] is generally
+    available and widely used, good interoperability can be achieved by
+    implementations that expect no more precision or range than these
+    provide, in the sense that implementations will approximate JSON
+    numbers within the expected precision.  A JSON number such as 1E400
+    or 3.141592653589793238462643383279 may indicate potential
+    interoperability problems, since it suggests that the software that
+    created it expects receiving software to have greater capabilities
+    for numeric magnitude and precision than is widely available.
+    
+    Note that when such software is used, numbers that are integers and
+    are in the range $[-2^{53}+1, 2^{53}-1]$ are interoperable in the
+    sense that implementations will agree exactly on their numeric
+    values.
+
+## Library implementation
+
+This section describes how the above number specification is implemented by this library.
+
+### Number storage
+
+In the default [`json`](../../api/json.md) type, numbers are stored as `#!c std::uint64_t`, `#!c std::int64_t`, and
+`#!c double`,  respectively. Thereby, `#!c std::uint64_t` and `#!c std::int64_t` are used only if they can store the 
+number without loss of  precision. If this is impossible (e.g., if the number is too large), the number is stored as
+`#!c double`.
+
+!!! info "Notes"
+
+    - Numbers with a decimal digit or scientific notation are always stored as `#!c double`.
+    - The number types can be changed, see [Template number types](#template-number-types). 
+    - As of version 3.9.1, the conversion is realized by
+      [`std::strtoull`](https://en.cppreference.com/w/cpp/string/byte/strtoul),
+      [`std::strtoll`](https://en.cppreference.com/w/cpp/string/byte/strtol), and
+      [`std::strtod`](https://en.cppreference.com/w/cpp/string/byte/strtof), respectively.
+
+!!! example "Examples"
+
+    - Integer `#!c -12345678912345789123456789` is smaller than `#!c INT64_MIN` and will be stored as floating-point
+      number `#!c -1.2345678912345788e+25`.
+    - Integer `#!c 1E3` will be stored as floating-point number `#!c 1000.0`.
+
+### Number limits
+
+- Any 64-bit signed or unsigned integer can be stored without loss of precision.
+- Numbers exceeding the limits of `#!c double` (i.e., numbers that after conversion via
+[`std::strtod`](https://en.cppreference.com/w/cpp/string/byte/strtof) are not satisfying
+[`std::isfinite`](https://en.cppreference.com/w/cpp/numeric/math/isfinite) such as `#!c 1E400`) will throw exception
+[`json.exception.out_of_range.406`](../../home/exceptions.md#jsonexceptionout_of_range406) during parsing.
+- Floating-point numbers are rounded to the next number representable as `double`. For instance
+`#!c 3.141592653589793238462643383279` is stored as [`0x400921fb54442d18`](https://float.exposed/0x400921fb54442d18).
+This is the same behavior as the code `#!c double x = 3.141592653589793238462643383279;`.
+
+!!! success "Interoperability"
+
+    - The library interoperable with respect to the specification, because its supported range $[-2^{63}, 2^{64}-1]$ is
+      larger than the described range $[-2^{53}+1, 2^{53}-1]$.
+    - All integers outside the range $[-2^{63}, 2^{64}-1]$, as well as floating-point numbers are stored as `double`.
+      This also concurs with the specification above.
+
+### Zeros
+
+The JSON number grammar allows for different ways to express zero, and this library will store zeros differently:
+
+| Literal | Stored value and type  | Serialization |
+|---------|------------------------|---------------|
+| `0`     | `#!c std::uint64_t(0)` | `0`           |
+| `-0`    | `#!c std::int64_t(0)`  | `0`           |
+| `0.0`   | `#!c double(0.0)`      | `0.0`         |
+| `-0.0`  | `#!c double(-0.0)`     | `-0.0`        |
+| `0E0`   | `#!c double(0.0)`      | `0.0`         |
+| `-0E0`  | `#!c double(-0.0)`     | `-0.0`        |
+
+That is, `-0` is stored as a signed integer, but the serialization does not reproduce the `-`.
+
+### Number serialization
+
+- Integer numbers are serialized as is; that is, no scientific notation is used.
+- Floating-point numbers are serialized as specified by the `#!c %g` printf modifier with 
+  [`std::numeric_limits<double>::max_digits10`](https://en.cppreference.com/w/cpp/types/numeric_limits/max_digits10)
+  significant digits. The rationale is to use the shortest representation while still allow round-tripping.
+
+!!! hint "Notes regarding precision of floating-point numbers"
+
+    As described above, floating-point numbers are rounded to the nearest double and serialized with the shortest
+    representation to allow round-tripping. This can yield confusing examples:
+
+    - The serialization can have fewer decimal places than the input: `#!c 2555.5599999999999` will be serialized as
+      `#!c 2555.56`. The reverse can also be true.
+    - The serialization can be in scientific notation even if the input is not: `#!c 0.0000972439793401814` will be 
+      serialized as `#!c 9.72439793401814e-05`. The reverse can also be true: `#!c 12345E-5` will be serialized as
+      `#!c 0.12345`.
+    - Conversions from `#!c float` to `#!c double` can also introduce rounding errors:
+        ```cpp
+        float f = 0.3;
+        json j = f;
+        std::cout << j << '\n';
+        ```
+        yields `#!c 0.30000001192092896`.
+
+    All examples here can be reproduced by passing the original double value to
+
+    ```cpp
+    std::printf("%.*g\n", std::numeric_limits<double>::max_digits10, double_value);
+    ```
+
+#### NaN handling
+
+NaN (not-a-number) cannot be expressed with the number syntax described above and are in fact explicitly excluded:
+
+!!! quote "[RFC 8259](https://tools.ietf.org/html/rfc8259#section-6), Section 6"
+
+    Numeric values that cannot be represented in the grammar below (such
+    as Infinity and NaN) are not permitted.
+
+That is, there is no way to *parse* a NaN value. However, NaN values can be stored in a JSON value by assignment.
+
+This library serializes NaN values  as `#!js null`. This corresponds to the behavior of JavaScript's
+[`JSON.stringify`](https://www.w3schools.com/js/js_json_stringify.asp) function.
+
+!!! example
+
+    The following example shows how a NaN value is stored in a `json` value.
+
+    ```cpp
+    int main()
+    {
+        double val = std::numeric_limits<double>::quiet_NaN();
+        std::cout << "val=" << val << std::endl;
+        json j = val;
+        std::cout << "j=" << j.dump() << std::endl;
+        val = j;
+        std::cout << "val=" << val << std::endl;
+    }
+    ```
+    
+    output:
+    
+    ```
+    val=nan
+    j=null
+    val=nan
+    ```
+
+### Number comparison
+
+Floating-point inside JSON values numbers are compared with `#!c json::number_float_t::operator==` which is
+`#!c double::operator==` by default.
+
+!!! example "Alternative comparison functions"
+
+    To compare floating-point while respecting an epsilon, an alternative
+    [comparison function](https://github.com/mariokonrad/marnav/blob/master/include/marnav/math/floatingpoint.hpp#L34-#L39)
+    could be used, for instance
+    
+    ```cpp
+    template<typename T, typename = typename std::enable_if<std::is_floating_point<T>::value, T>::type>
+    inline bool is_same(T a, T b, T epsilon = std::numeric_limits<T>::epsilon()) noexcept
+    {
+        return std::abs(a - b) <= epsilon;
+    }
+    ```
+    Or you can self-define an operator equal function like this:
+    
+    ```cpp
+    bool my_equal(const_reference lhs, const_reference rhs)
+    {
+        const auto lhs_type lhs.type();
+        const auto rhs_type rhs.type();
+        if (lhs_type == rhs_type)
+        {
+            switch(lhs_type)
+            {
+                // self_defined case
+                case value_t::number_float:
+                    return std::abs(lhs - rhs) <= std::numeric_limits<float>::epsilon();
+        
+                // other cases remain the same with the original
+                ...
+            }
+        }
+        ...
+    }
+    ```
+    
+    (see [#703](https://github.com/nlohmann/json/issues/703) for more information.)
+    
+!!! note
+
+    NaN values never compare equal to themselves or to other NaN values. See [#514](https://github.com/nlohmann/json/issues/514).
+
+### Number conversion
+
+Just like the C++ language itself, the `get` family of functions allows conversions between unsigned and signed
+integers, and  between integers and floating-point values to integers. This behavior may be surprising.
+
+!!! warning "Unconditional number conversions"
+
+    ```cpp hl_lines="3"
+    double d = 42.3;                                   // non-integer double value 42.3
+    json jd = d;                                       // stores double value 42.3
+    std::int64_t i = jd.template get<std::int64_t>();  // now i==42; no warning or error is produced
+    ```
+
+    Note the last line with throw a [`json.exception.type_error.302`](../../home/exceptions.md#jsonexceptiontype_error302)
+    exception if `jd` is not a numerical type, for instance a string.
+
+The rationale is twofold:
+
+1. JSON does not define a number type or precision (see above).
+2. C++ also allows to silently convert between number types.
+
+!!! success "Conditional number conversion"
+
+    The code above can be solved by explicitly checking the nature of the value with members such as
+    [`is_number_integer()`](../../api/basic_json/is_number_integer.md) or
+    [`is_number_unsigned()`](../../api/basic_json/is_number_unsigned.md):
+
+    ```cpp hl_lines="2"
+    // check if jd is really integer-valued
+    if (jd.is_number_integer())
+    {
+        // if so, do the conversion and use i
+        std::int64_t i = jd.template get<std::int64_t>();
+        // ...
+    }
+    else
+    {
+        // otherwise, take appropriate action
+        // ...
+    }
+    ```
+
+    Note this approach also has the advantage that it can react on non-numerical JSON value types such as strings.
+
+    (Example taken from [#777](https://github.com/nlohmann/json/issues/777#issuecomment-459968458).)
+
+### Determine number types
+
+As the example in [Number conversion](#number-conversion) shows, there are different functions to determine the type of
+the stored number:
+
+- [`is_number()`](../../api/basic_json/is_number.md) returns `#!c true` for any number type
+- [`is_number_integer()`](../../api/basic_json/is_number_integer.md) returns `#!c true` for signed and unsigned integers
+- [`is_number_unsigned()`](../../api/basic_json/is_number_unsigned.md) returns `#!c true` for unsigned integers only
+- [`is_number_float()`](../../api/basic_json/is_number_float.md) returns `#!c true` for floating-point numbers
+- [`type_name()`](../../api/basic_json/type_name.md) returns `#!c "number"` for any number type
+- [`type()`](../../api/basic_json/type.md) returns a different enumerator of
+  [`value_t`](../../api/basic_json/value_t.md) for all number types
+
+| function                                                             | unsigned integer  | signed integer   | floating-point | string         |
+|----------------------------------------------------------------------|-------------------|------------------|----------------|----------------|
+| [`is_number()`](../../api/basic_json/is_number.md)                   | `#!c true`        | `#!c true`       | `#!c true`     | `#!c false`    |
+| [`is_number_integer()`](../../api/basic_json/is_number_integer.md)   | `#!c true`        | `#!c true`       | `#!c false`    | `#!c false`    |
+| [`is_number_unsigned()`](../../api/basic_json/is_number_unsigned.md) | `#!c true`        | `#!c false`      | `#!c false`    | `#!c false`    |
+| [`is_number_float()`](../../api/basic_json/is_number_float.md)       | `#!c false`       | `#!c false`      | `#!c true`     | `#!c false`    |
+| [`type_name()`](../../api/basic_json/type_name.md)                   | `#!c "number"`    | `#!c "number"`   | `#!c "number"` | `#!c "string"` |
+| [`type()`](../../api/basic_json/type.md)                             | `number_unsigned` | `number_integer` | `number_float` | `string`       |
+
+### Template number types
+
+The number types can be changed with template parameters.
+
+| position | number type       | default type        | possible values                                |
+|----------|-------------------|---------------------|------------------------------------------------|
+| 5        | signed integers   | `#!c std::int64_t`  | `#!c std::int32_t`, `#!c std::int16_t`, etc.   |
+| 6        | unsigned integers | `#!c std::uint64_t` | `#!c std::uint32_t`, `#!c std::uint16_t`, etc. |
+| 7        | floating-point    | `#!c double`        | `#!c float`, `#!c long double`                 |
+
+!!! info "Constraints on number types"
+
+    - The type for signed integers must be convertible from `#!c long long`. The type for floating-point numbers is used
+      in case of overflow.
+    - The type for unsigned integers must be convertible from `#!c unsigned long long`.  The type for floating-point
+      numbers is used in case of overflow.
+    - The types for signed and unsigned integers must be distinct, see
+      [#2573](https://github.com/nlohmann/json/issues/2573).
+    - Only `#!c double`, `#!c float`, and `#!c long double` are supported for floating-point numbers.
+
+!!! example
+
+    A `basic_json` type that uses `#!c long double` as floating-point type.
+
+    ```cpp hl_lines="2"
+    using json_ld = nlohmann::basic_json<std::map, std::vector, std::string, bool,
+                                         std::int64_t, std::uint64_t, long double>;
+    ```
+
+    Note values should then be parsed with `json_ld::parse` rather than `json::parse` as the latter would parse
+    floating-point values to `#!c double` before then converting them to `#!c long double`.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/code_of_conduct.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/code_of_conduct.md
new file mode 100644
index 00000000..770b8173
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/code_of_conduct.md
@@ -0,0 +1,46 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at mail@nlohmann.me. The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/customers.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/customers.md
new file mode 100644
index 00000000..67c5a62d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/customers.md
@@ -0,0 +1,159 @@
+# Customers
+
+The library is used in multiple projects, applications, operating systems, etc. The list below is not exhaustive, but
+the result of an internet search. If you know further customers of the library, [please let me know](mailto:mail@nlohmann.me).
+
+[![](../images/customers.png)](../images/customers.png)
+
+## Space Exploration
+
+- [**Peregrine Lunar Lander Flight 01**](https://en.wikipedia.org/wiki/Peregrine_Mission_One) - The library was utilized for payload management in the **Peregrine Moon Lander**, developed by **Astrobotic Technology** and launched as part of NASA's **Commercial Lunar Payload Services (CLPS)** program. After six days in orbit, the spacecraft was intentionally redirected into Earth's atmosphere, where it burned up over the Pacific Ocean on **January 18, 2024**.
+
+## Automotive
+
+- [**Alexa Auto SDK**](https://github.com/alexa/alexa-auto-sdk), a software development kit enabling the integration of Alexa into automotive systems
+- [**Apollo**](https://github.com/ApolloAuto/apollo), a framework for building autonomous driving systems
+- [**Automotive Grade Linux (AGL)**](https://download.automotivelinux.org/AGL/release/jellyfish/latest/qemux86-64/deploy/licenses/nlohmann-json/): a collaborative open-source platform for automotive software development
+- [**Genesis Motor** (infotainment)](http://webmanual.genesis.com/ccIC/AVNT/JW/KOR/English/reference010.html), a luxury automotive brand
+- [**Hyundai** (infotainment)](https://www.hyundai.com/wsvc/ww/download.file.do?id=/content/hyundai/ww/data/opensource/data/GN7-2022/licenseCode/info), a global automotive brand
+- [**Kia** (infotainment)](http://webmanual.kia.com/PREM_GEN6/AVNT/RJPE/KOR/Korean/reference010.html), a global automotive brand
+- [**Mercedes-Benz Operating System (MB.OS)**](https://group.mercedes-benz.com/careers/about-us/mercedes-benz-operating-system/), a core component of the vehicle software ecosystem from Mercedes-Benz
+- [**Rivian** (infotainment)](https://assets.ctfassets.net/2md5qhoeajym/3cwyo4eoufk4yingUwusFt/ded2c47da620fdfc99c88c7156d2c1d8/In-Vehicle_OSS_Attribution_2024__11-24_.pdf), an electric vehicle manufacturer
+- [**Suzuki** (infotainment)](https://www.globalsuzuki.com/motorcycle/ipc/oss/oss_48KA_00.pdf), a global automotive and motorcycle manufacturer
+
+## Gaming and Entertainment
+
+- [**Assassin's Creed: Mirage**](https://www.mobygames.com/person/1195889/niels-lohmann/credits/): a stealth-action game set in the Middle East, focusing on the journey of a young assassin with classic parkour and stealth mechanics
+- [**Chasm: The Rift**](https://www.mobygames.com/person/1195889/niels-lohmann/credits/): a first-person shooter blending horror and adventure, where players navigate dark realms and battle monsters
+- [**College Football 25**](https://www.mobygames.com/person/1195889/niels-lohmann/credits/): a college football simulation game featuring gameplay that mimics real-life college teams and competitions
+- [**Concepts**](https://concepts.app/en/licenses): a digital sketching app designed for creative professionals, offering flexible drawing tools for illustration, design, and brainstorming
+- [**Depthkit**](https://www.depthkit.tv/third-party-licenses): a tool for creating and capturing volumetric video, enabling immersive 3D experiences and interactive content
+- [**immersivetech**](https://immersitech.io/open-source-third-party-software/): a technology company focused on immersive experiences, providing tools and solutions for virtual and augmented reality applications
+- [**LOOT**](https://loot.readthedocs.io/_/downloads/en/0.13.0/pdf/), a tool for optimizing the load order of game plugins, commonly used in The Elder Scrolls and Fallout series
+- [**Madden NFL 25**](https://www.mobygames.com/person/1195889/niels-lohmann/credits/): a sports simulation game capturing the excitement of American football with realistic gameplay and team management features
+- [**Marne**](https://marne.io/licenses), an unofficial private server platform for hosting custom Battlefield 1 game experiences
+- [**Minecraft**](https://www.minecraft.net/zh-hant/attribution), a popular sandbox video game
+- [**NHL 22**](https://www.mobygames.com/person/1195889/niels-lohmann/credits/): a hockey simulation game offering realistic gameplay, team management, and various modes to enhance the hockey experience
+- [**Pixelpart**](https://pixelpart.net/documentation/book/third-party.html): a 2D animation and video compositing software that allows users to create animated graphics and visual effects with a focus on simplicity and ease of use
+- [**Red Dead Redemption II**](https://www.mobygames.com/person/1195889/niels-lohmann/credits/): an open-world action-adventure game following an outlaw's story in the late 1800s, emphasizing deep storytelling and immersive gameplay
+- [**Tactics Ogre: Reborn**](https://www.square-enix-games.com/en_US/documents/tactics-ogre-reborn-pc-installer-software-and-associated-plug-ins-disclosure), a tactical role-playing game featuring strategic battles and deep storytelling elements
+- [**Throne and Liberty**](https://www.amazon.com/gp/help/customer/display.html?nodeId=T7fLNw5oAevCMtJFPj&pop-up=1), an MMORPG that offers an expansive fantasy world with dynamic gameplay and immersive storytelling
+- [**Unity Vivox**](https://docs.unity3d.com/Packages/com.unity.services.vivox@15.1/license/Third%20Party%20Notices.html), a communication service that enables voice and text chat functionality in multiplayer games developed with Unity
+- [**Zool: Redimensioned**](https://www.mobygames.com/person/1195889/niels-lohmann/credits/): a modern reimagining of the classic platformer featuring fast-paced gameplay and vibrant environments
+
+## Consumer Electronics
+
+- [**Audinate**](https://www.audinate.com/legal/software-licensing/dante-av-h-open-source-licenses/): a provider of networked audio solutions specializing in Dante technology, which facilitates high-quality digital audio transport over IP networks
+- [**Cisco Webex Desk Camera**](https://www.cisco.com/c/dam/en_us/about/doing_business/open_source/docs/CiscoWebexDeskCamera-23-1622100417.pdf), a video camera designed for professional-quality video conferencing and remote collaboration
+- [**Philips Hue Personal Wireless Lighting**](http://2ak5ape.257.cz/): a smart lighting system for customizable and wireless home illumination
+- [**Ray-Ban Meta Smart glasses**](https://www.meta.com/de/en/legal/smart-glasses/third-party-notices-android/03/), a pair of smart glasses designed for capturing photos and videos with integrated connectivity and social features
+- [**Siemens SINEMA Remote Connect**](https://cache.industry.siemens.com/dl/files/790/109793790/att_1054961/v2/OSS_SINEMA-RC_86.pdf), a remote connectivity solution for monitoring and managing industrial networks and devices securely
+- [**Sony PlayStation 4**](https://doc.dl.playstation.net/doc/ps4-oss/index.html), a gaming console developed by Sony that offers a wide range of games and multimedia entertainment features
+- [**Sony Virtual Webcam Driver for Remote Camera**](https://helpguide.sony.net/rc/vwd/v1/zh-cn/print.pdf), a software driver that enables the use of Sony cameras as virtual webcams for video conferencing and streaming
+
+## Operating Systems
+
+- [**Apple iOS and macOS**](https://www.apple.com/macos), a family of operating systems developed by Apple, including iOS for mobile devices and macOS for desktop computers
+- [**Google Fuchsia**](https://fuchsia.googlesource.com/third_party/json/), an open-source operating system developed by Google, designed to be secure, updatable, and adaptable across various devices
+- [**SerenityOS**](https://github.com/SerenityOS/serenity), an open-source operating system that aims to provide a simple and beautiful user experience with a focus on simplicity and elegance
+- [**Yocto**](http://ftp.emacinc.com/openembedded-sw/kirkstone-icop-5.15-kirkstone-6.0/archive-2024-10/pn8m-090t-ppc/licenses/nlohmann-json/): a Linux-based build system for creating custom operating systems and software distributions, tailored for embedded devices and IoT applications
+
+## Development Tools and IDEs
+
+- [**Accentize SpectralBalance**](https://www.accentize.com/products/SpectralBalanceManual.pdf), an adaptive speech analysis tool designed to enhance audio quality by optimizing frequency balance in recordings
+- [**Arm Compiler for Linux**](https://documentation-service.arm.com/static/66558e9d876c8d213b7843e4), a software development toolchain for compiling and optimizing applications on Arm-based Linux systems
+- [**BBEdit**](https://s3.amazonaws.com/BBSW-download/BBEdit_15.1.2_User_Manual.pdf), a professional text and code editor for macOS
+- [**CoderPad**](https://coderpad.io), a collaborative coding platform that enables real-time code interviews and assessments for developers; the library is included in every CoderPad instance and can be accessed with a simple `#include "json.hpp"`
+- [**Compiler Explorer**](https://godbolt.org), a web-based tool that allows users to write, compile, and visualize the assembly output of code in various programming languages; the library is readily available and accessible with the directive `#include <nlohmann/json.hpp>`.
+- [**GitHub CodeQL**](https://github.com/github/codeql), a code analysis tool used for identifying security vulnerabilities and bugs in software through semantic queries
+- [**Hex-Rays**](https://docs.hex-rays.com/user-guide/user-interface/licenses): a reverse engineering toolset for analyzing and decompiling binaries, primarily used for security research and vulnerability analysis
+- [**ImHex**](https://github.com/WerWolv/ImHex), a hex editor designed for reverse engineering, providing advanced features for data analysis and manipulation
+- [**Intel GPA Framework**](https://intel.github.io/gpasdk-doc/src/licenses.html), a suite of cross-platform tools for capturing, analyzing, and optimizing graphics applications across different APIs
+- [**Meta Yoga**](https://github.com/facebook/yoga), a layout engine that facilitates flexible and efficient user interface design across multiple platforms
+- [**MKVToolNix**](https://mkvtoolnix.download/doc/README.md), a set of tools for creating, editing, and inspecting MKV (Matroska) multimedia container files
+- [**NVIDIA Nsight Compute**](https://docs.nvidia.com/nsight-compute/2022.2/pdf/CopyrightAndLicenses.pdf), a performance analysis tool for CUDA applications that provides detailed insights into GPU performance metrics
+- [**Notepad++**](https://github.com/notepad-plus-plus/notepad-plus-plus), a free source code editor that supports various programming languages
+- [**OpenRGB**](https://gitlab.com/CalcProgrammer1/OpenRGB), an open source RGB lighting control that doesn't depend on manufacturer software
+- [**OpenTelemetry C++**](https://github.com/open-telemetry/opentelemetry-cpp): a library for collecting and exporting observability data in C++, enabling developers to implement distributed tracing and metrics in their application
+- [**Qt Creator**](https://doc.qt.io/qtcreator/qtcreator-attribution-json-nlohmann.html), an IDE for developing applications using the Qt application framework
+- [**Scanbot SDK**](https://docs.scanbot.io/barcode-scanner-sdk/web/third-party-libraries/): a software development kit (SDK) that provides tools for integrating advanced document scanning and barcode scanning capabilities into applications
+
+## Machine Learning and AI
+
+- [**Apple Core ML Tools**](https://github.com/apple/coremltools), a set of tools for converting and configuring machine learning models for deployment in Apple's Core ML framework
+- [**Avular Mobile Robotics**](https://www.avular.com/licenses/nlohmann-json-3.9.1.txt): a platform for developing and deploying mobile robotics solutions
+- [**Google gemma.cpp**](https://github.com/google/gemma.cpp), a lightweight C++ inference engine designed for running AI models from the Gemma family
+- [**llama.cpp**](https://github.com/ggerganov/llama.cpp), a C++ library designed for efficient inference of large language models (LLMs), enabling streamlined integration into applications
+- [**Mozilla llamafile**](https://github.com/Mozilla-Ocho/llamafile), a tool designed for distributing and executing large language models (LLMs) efficiently using a single file format
+- [**NVIDIA ACE**](https://docs.nvidia.com/ace/latest/index.html), a suite of real-time AI solutions designed for the development of interactive avatars and digital human applications, enabling scalable and sophisticated user interactions
+- [**Peer**](https://support.peer.inc/hc/en-us/articles/17261335054235-Licenses): a platform offering personalized AI assistants for interactive learning and creative collaboration
+- [**stable-diffusion.cpp**](https://github.com/leejet/stable-diffusion.cpp): a C++ implementation of the Stable Diffusion image generation model
+- [**TanvasTouch**](https://tanvas.co/tanvastouch-sdk-third-party-acknowledgments): a software development kit (SDK) that enables developers to create tactile experiences on touchscreens, allowing users to feel textures and physical sensations in a digital environment
+- [**TensorFlow**](https://github.com/tensorflow/tensorflow), a machine learning framework that facilitates the development and training of models, supporting data serialization and efficient data exchange between components
+
+## Scientific Research and Analysis
+
+- [**BLACK**](https://www.black-sat.org/en/stable/installation/linux.html), a bounded linear temporal logic (LTL) satisfiability checker
+- [**CERN Atlas Athena**](https://gitlab.cern.ch/atlas/athena/-/blob/main/Control/PerformanceMonitoring/PerfMonComps/src/PerfMonMTSvc.h), a software framework used in the ATLAS experiment at the Large Hadron Collider (LHC) for performance monitoring
+- [**KAMERA**](https://github.com/Kitware/kamera): a platform for synchronized data collection and real-time deep learning to map marine species like polar bears and seals, aiding Arctic ecosystem research
+- [**KiCad**](https://gitlab.com/kicad/code/kicad/-/tree/master/thirdparty/nlohmann_json): a free and open-source software suite for electronic design automation
+- [**MeVisLab**](https://mevislabdownloads.mevis.de/docs/current/MeVis/ThirdParty/Documentation/Publish/ThirdPartyReference/index.html): a software framework for medical image processing and visualization.
+- [**OpenPMD API**](https://openpmd-api.readthedocs.io/en/0.8.0-alpha/backends/json.html): a versatile programming interface for accessing and managing scientific data, designed to facilitate the efficient storage, retrieval, and sharing of simulation data across various applications and platforms
+- [**ParaView**](https://github.com/Kitware/ParaView): an open-source tool for large-scale data visualization and analysis across various scientific domains
+- [**QGIS**](https://gitlab.b-data.ch/qgis/qgis/-/blob/backport-57658-to-release-3_34/external/nlohmann/json.hpp): a free and open-source geographic information system (GIS) application that allows users to create, edit, visualize, and analyze geospatial data across a variety of formats
+- [**VTK**](https://github.com/Kitware/VTK): a software library for 3D computer graphics, image processing, and visualization
+- [**VolView**](https://github.com/Kitware/VolView): a lightweight application for interactive visualization and analysis of 3D medical imaging data.
+
+## Business and Productivity Software
+
+- [**ArcGIS PRO**](https://www.esri.com/content/dam/esrisites/en-us/media/legal/open-source-acknowledgements/arcgis-pro-2-8-attribution-report.html), a desktop geographic information system (GIS) application developed by Esri for mapping and spatial analysis
+- [**Autodesk Desktop**](https://damassets.autodesk.net/content/dam/autodesk/www/Company/legal-notices-trademarks/autodesk-desktop-platform-components/internal-autodesk-components-web-page-2023.pdf), a software platform developed by Autodesk for creating and managing desktop applications and services
+- [**Check Point**](https://www.checkpoint.com/about-us/copyright-and-trademarks/): a cybersecurity company specializing in threat prevention and network security solutions, offering a range of products designed to protect enterprises from cyber threats and ensure data integrity
+- [**Microsoft Office for Mac**](https://officecdnmac.microsoft.com/pr/legal/mac/OfficeforMacAttributions.html), a suite of productivity applications developed by Microsoft for macOS, including tools for word processing, spreadsheets, and presentations
+- [**Nexthink Infinity**](https://docs.nexthink.com/legal/services-terms/experience-open-source-software-licenses/infinity-2022.8-software-licenses): a digital employee experience management platform for monitoring and improving IT performance
+- [**Sophos Connect Client**](https://docs.sophos.com/nsg/licenses/SophosConnect/SophosConnectAttribution.html): a secure VPN client from Sophos that allows remote users to connect to their corporate network, ensuring secure access to resources and data
+- [**Stonebranch**](https://stonebranchdocs.atlassian.net/wiki/spaces/UA77/pages/799545647/Licenses+for+Third-Party+Libraries): a cloud-based cybersecurity solution that integrates backup, disaster recovery, and cybersecurity features to protect data and ensure business continuity for organizations
+- [**Tablecruncher**](https://tablecruncher.com/): a data analysis tool that allows users to import, analyze, and visualize spreadsheet data, offering interactive features for better insights and decision-making
+- [**magicplan**](https://help.magicplan.app/acknowledgments), a mobile application for creating floor plans and interior designs using augmented reality
+
+## Databases and Big Data
+
+- [**ADIOS2**](https://code.ornl.gov/ecpcitest/adios2/-/tree/pr4285_FFSUpstream/thirdparty/nlohmann_json?ref_type=heads): a data management framework designed for high-performance input and output operations
+- [**Cribl Stream**](https://docs.cribl.io/stream/third-party-current-list/): a real-time data processing platform that enables organizations to collect, route, and transform observability data, enhancing visibility and insights into their systems
+- [**DB Browser for SQLite**](https://github.com/sqlitebrowser/sqlitebrowser), a visual open-source tool for creating, designing, and editing SQLite database files
+- [**MySQL Connector/C++**](https://docs.oracle.com/cd/E17952_01/connector-cpp-9.1-license-com-en/license-opentelemetry-cpp-com.html), a C++ library for connecting and interacting with MySQL databases
+- [**MySQL NDB Cluster**](https://downloads.mysql.com/docs/licenses/cluster-9.0-com-en.pdf), a distributed database system that provides high availability and scalability for MySQL databases
+- [**PrestoDB**](https://github.com/prestodb/presto), a distributed SQL query engine designed for large-scale data analytics, originally developed by Facebook
+- [**ROOT Data Analysis Framework**](https://root.cern/doc/v614/classnlohmann_1_1basic__json.html), an open-source data analysis framework widely used in high-energy physics and other fields for data processing and visualization
+
+## Simulation and Modeling
+
+- [**Arcturus HoloSuite**](https://www.datocms-assets.com/104353/1698904597-holosuite-third-party-software-credits-and-attributions-2.pdf), a software toolset for capturing, editing, and streaming volumetric video, featuring advanced compression technologies for high-quality 3D content creation
+- [**azul**](https://pure.tudelft.nl/ws/files/85338589/tgis.12673.pdf), a fast and efficient 3D city model viewer designed for visualizing urban environments and spatial data
+- [**Blender**](https://projects.blender.org/blender/blender/search?q=nlohmann), a free and open-source 3D creation suite for modeling, animation, rendering, and more
+- [**cpplot**](https://cpplot.readthedocs.io/en/latest/library_api/function_eigen_8h_1ac080eac0541014c5892a55e41bf785e6.html), a library for creating interactive graphs and charts in C++, which can be viewed in web browsers
+- [**NVIDIA Omniverse**](https://docs.omniverse.nvidia.com/composer/latest/common/product-licenses/usd-explorer/usd-explorer-2023.2.0-licenses-manifest.html), a platform for 3D content creation and collaboration that enables real-time simulations and interactive experiences across various industries
+- [**Pixar Renderman**](https://rmanwiki-26.pixar.com/space/REN26/19662083/Legal+Notice), a photorealistic 3D rendering software developed by Pixar, widely used in the film industry for creating high-quality visual effects and animations
+- [**ROS - Robot Operating System**](http://docs.ros.org/en/noetic/api/behaviortree_cpp/html/json_8hpp_source.html), a set of software libraries and tools that assist in developing robot applications
+- [**UBS**](https://www.ubs.com/), a multinational financial services and banking company
+- [**GAMS**](https://www.gams.com/47/docs/THIRDPARTY.html): a high-performance mathematical modeling system for optimization and decision support
+- [**M-Star**](https://docs.mstarcfd.com/3_Licensing/thirdparty-licenses.html): a computational fluid dynamics software for simulating and analyzing fluid flow
+- [**MapleSim CAD Toolbox**](https://www.maplesoft.com/support/help/MapleSim/view.aspx?path=CADToolbox/copyright): a software extension for MapleSim that integrates CAD models, allowing users to import, manipulate, and analyze 3D CAD data within the MapleSim environment for enhanced modeling and simulation
+- [**Kitware SMTK**](https://github.com/Kitware/SMTK): a software toolkit for managing simulation models and workflows in scientific and engineering applications
+
+## Enterprise and Cloud Applications
+
+- [**Acronis Cyber Protect Cloud**](https://care.acronis.com/s/article/59533-Third-party-software-used-in-Acronis-Cyber-Protect-Cloud?language=en_US): an all-in-one data protection solution that combines backup, disaster recovery, and cybersecurity to safeguard business data from threats like ransomware
+- [**Baereos**](https://gitlab.tiger-computing.co.uk/packages/bareos/-/blob/tiger/bullseye/third-party/CLI11/examples/json.cpp): a backup solution that provides data protection and recovery options for various environments, including physical and virtual systems
+- [**Bitdefender Home Scanner**](https://www.bitdefender.de/site/Main/view/home-scanner-open-source.html), a tool from Bitdefender that scans devices for malware and security threats, providing a safeguard against potential online dangers
+- [**Citrix Provisioning**](https://docs.citrix.com/en-us/provisioning/2203-ltsr/downloads/pvs-third-party-notices-2203.pdf): a solution that streamlines the delivery of virtual desktops and applications by allowing administrators to manage and provision resources efficiently across multiple environments
+- [**Citrix Virtual Apps and Desktops**](https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/2305/downloads/third-party-notices-apps-and-desktops.pdf), a solution from Citrix that delivers virtual apps and desktops
+- [**Cyberarc**](https://docs.cyberark.com/Downloads/Legal/Privileged%20Session%20Manager%20for%20SSH%20Third-Party%20Notices.pdf): a security solution that specializes in privileged access management, enabling organizations to control and monitor access to critical systems and data, thereby enhancing overall cybersecurity posture
+- [**Egnyte Desktop**](https://helpdesk.egnyte.com/hc/en-us/articles/360007071732-Third-Party-Software-Acknowledgements): a secure cloud storage solution designed for businesses, enabling file sharing, collaboration, and data management across teams while ensuring compliance and data protection
+- [**Ethereum Solidity**](https://github.com/ethereum/solidity), a high-level, object-oriented programming language designed for implementing smart contracts on the Ethereum platform
+- [**Inciga**](https://fossies.org/linux/icinga2/third-party/nlohmann_json/json.hpp): a monitoring tool for IT infrastructure, designed to provide insights into system performance and availability through customizable dashboards and alerts
+- [**Intel Accelerator Management Daemon for VMware ESXi**](https://downloadmirror.intel.com/772507/THIRD-PARTY.txt): a management tool designed for monitoring and controlling Intel hardware accelerators within VMware ESXi environments, optimizing performance and resource allocation
+- [**Juniper Identity Management Service**](https://www.juniper.net/documentation/us/en/software/jims/jims-guide/jims-guide.pdf)
+- [**Microsoft Azure IoT SDK**](https://library.e.abb.com/public/2779c5f85f30484192eb3cb3f666a201/IP%20Gateway%20Open%20License%20Declaration_9AKK108467A4095_Rev_C.pdf), a collection of tools and libraries to help developers connect, build, and deploy Internet of Things (IoT) solutions on the Azure cloud platform
+- [**Microsoft WinGet**](https://github.com/microsoft/winget-cli), a command-line utility included in the Windows Package Manager
+- [**Pointr**](https://docs-dev.pointr.tech/docs/8.x/Developer%20Portal/Open%20Source%20Licenses/): a platform for indoor positioning and navigation solutions, offering tools and SDKs for developers to create location-based applications
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/design_goals.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/design_goals.md
new file mode 100644
index 00000000..b3a0b2b9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/design_goals.md
@@ -0,0 +1,17 @@
+# Design goals
+
+There are myriads of [JSON](https://json.org) libraries out there, and each may even have its reason to exist. Our class had these design goals:
+
+- **Intuitive syntax**. In languages such as Python, JSON feels like a first class data type. We used all the operator magic of modern C++ to achieve the same feeling in your code.
+
+- **Trivial integration**. Our whole code consists of a single header file [`json.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json.hpp). That's it. No library, no subproject, no dependencies, no complex build system. The class is written in vanilla C++11. All in all, everything should require no adjustment of your compiler flags or project settings.
+
+- **Serious testing**. Our class is heavily [unit-tested](https://github.com/nlohmann/json/tree/develop/test/src) and covers [100%](https://coveralls.io/r/nlohmann/json) of the code, including all exceptional behavior. Furthermore, we checked with [Valgrind](http://valgrind.org) and the [Clang Sanitizers](https://clang.llvm.org/docs/index.html) that there are no memory leaks. [Google OSS-Fuzz](https://github.com/google/oss-fuzz/tree/master/projects/json) additionally runs fuzz tests against all parsers 24/7, effectively executing billions of tests so far. To maintain high quality, the project is following the [Core Infrastructure Initiative (CII) best practices](https://bestpractices.coreinfrastructure.org/projects/289).
+
+Other aspects were not so important to us:
+
+- **Memory efficiency**. Each JSON object has an overhead of one pointer (the maximal size of a union) and one enumeration element (1 byte). The default generalization uses the following C++ data types: `std::string` for strings, `int64_t`, `uint64_t` or `double` for numbers, `std::map` for objects, `std::vector` for arrays, and `bool` for Booleans. However, you can template the generalized class `basic_json` to your needs.
+
+- **Speed**. There are certainly [faster JSON libraries](https://github.com/miloyip/nativejson-benchmark#parsing-time) out there. However, if your goal is to speed up your development by adding JSON support with a single header, then this library is the way to go. If you know how to use a `std::vector` or `std::map`, you are already set.
+
+See the [contribution guidelines](https://github.com/nlohmann/json/blob/master/.github/CONTRIBUTING.md#please-dont) for more information.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/exceptions.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/exceptions.md
new file mode 100644
index 00000000..f6e586c6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/exceptions.md
@@ -0,0 +1,905 @@
+# Exceptions
+
+## Overview
+
+### Base type
+
+All exceptions inherit from class `json::exception` (which in turn inherits from `std::exception`). It is used as the base class for all exceptions thrown by the `basic_json` class. This class can hence be used as "wildcard" to catch exceptions.
+
+``` mermaid
+classDiagram
+  direction LR
+    class `std::exception` {
+        <<interface>>
+    }
+
+    class `json::exception` {
+        +const int id
+        +const char* what() const
+    }
+
+    class `json::parse_error` {
+        +const std::size_t byte
+    }
+
+    class `json::invalid_iterator`
+    class `json::type_error`
+    class `json::out_of_range`
+    class `json::other_error`
+
+    `std::exception` <|-- `json::exception`
+    `json::exception` <|-- `json::parse_error`
+    `json::exception` <|-- `json::invalid_iterator`
+    `json::exception` <|-- `json::type_error`
+    `json::exception` <|-- `json::out_of_range`
+    `json::exception` <|-- `json::other_error`
+```
+
+### Switch off exceptions
+
+Exceptions are used widely within the library. They can, however, be switched off with either using the compiler flag `-fno-exceptions` or by defining the symbol [`JSON_NOEXCEPTION`](../api/macros/json_noexception.md). In this case, exceptions are replaced by `abort()` calls. You can further control this behavior by defining `JSON_THROW_USER` (overriding `#!cpp throw`), `JSON_TRY_USER` (overriding `#!cpp try`), and `JSON_CATCH_USER` (overriding `#!cpp catch`).
+
+Note that [`JSON_THROW_USER`](../api/macros/json_throw_user.md) should leave the current scope (e.g., by throwing or aborting), as continuing after it may yield undefined behavior.
+
+??? example
+
+    The code below switches off exceptions and creates a log entry with a detailed error message in case of errors.
+
+    ```cpp
+    #include <iostream>
+    
+    #define JSON_TRY_USER if(true)
+    #define JSON_CATCH_USER(exception) if(false)
+    #define JSON_THROW_USER(exception)                           \
+        {std::clog << "Error in " << __FILE__ << ":" << __LINE__ \
+                   << " (function " << __FUNCTION__ << ") - "    \
+                   << (exception).what() << std::endl;           \
+         std::abort();}
+    
+    #include <nlohmann/json.hpp>
+    ```
+
+Note the explanatory [`what()`](https://en.cppreference.com/w/cpp/error/exception/what) string of exceptions is not available for MSVC if exceptions are disabled, see [#2824](https://github.com/nlohmann/json/discussions/2824).
+
+See [documentation of `JSON_TRY_USER`, `JSON_CATCH_USER` and `JSON_THROW_USER`](../api/macros/json_throw_user.md) for more information.
+
+### Extended diagnostic messages
+
+Exceptions in the library are thrown in the local context of the JSON value they are detected. This makes detailed diagnostics messages, and hence debugging, difficult.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/diagnostics_standard.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/diagnostics_standard.output"
+    ```
+
+    This exception can be hard to debug if storing the value `#!c "12"` and accessing it is further apart.
+
+To create better diagnostics messages, each JSON value needs a pointer to its parent value such that a global context (i.e., a path from the root value to the value that lead to the exception) can be created. That global context is provided as [JSON Pointer](../features/json_pointer.md).
+
+As this global context comes at the price of storing one additional pointer per JSON value and runtime overhead to maintain the parent relation, extended diagnostics are disabled by default. They can, however, be enabled by defining the preprocessor symbol [`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md) to `1` before including `json.hpp`.
+
+??? example
+
+    ```cpp
+    --8<-- "examples/diagnostics_extended.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/diagnostics_extended.output"
+    ```
+
+    Now the exception message contains a JSON Pointer `/address/housenumber` that indicates which value has the wrong type.
+
+See [documentation of `JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md) for more information.
+
+## Parse errors
+
+This exception is thrown by the library when a parse error occurs. Parse errors
+can occur during the deserialization of JSON text, CBOR, MessagePack, as well
+as when using JSON Patch.
+
+Exceptions have ids 1xx.
+
+!!! info "Byte index"
+
+    Member `byte` holds the byte index of the last read character in the input
+    file.
+
+    For an input with n bytes, 1 is the index of the first character and n+1
+    is the index of the terminating null byte or the end of file. This also
+    holds true when reading a byte vector (CBOR or MessagePack).
+
+??? example
+
+    The following code shows how a `parse_error` exception can be caught.
+
+    ```cpp
+    --8<-- "examples/parse_error.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/parse_error.output"
+    ```
+
+
+### json.exception.parse_error.101
+
+This error indicates a syntax error while deserializing a JSON text. The error message describes that an unexpected token (character) was encountered, and the member `byte` indicates the error position.
+
+!!! failure "Example message"
+
+    Input ended prematurely:
+
+    ```
+    [json.exception.parse_error.101] parse error at 2: unexpected end of input; expected string literal
+    ```
+
+    No input:
+
+    ```
+    [json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON
+    ```
+
+    Control character was not escaped:
+
+    ```
+    [json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0009 (HT) must be escaped to \u0009 or \\; last read: '"<U+0009>'"
+    ```
+
+    String was not closed:
+
+    ```
+    [json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: missing closing quote; last read: '"'
+    ```
+
+    Invalid number format:
+
+    ```
+    [json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E'
+    ```
+
+    `\u` was not be followed by four hex digits:
+
+    ```
+    [json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\u' must be followed by 4 hex digits; last read: '"\u01"'
+    ```
+
+    Invalid UTF-8 surrogate pair:
+
+    ```
+    [json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF; last read: '"\uD7FF\uDC00'"
+    ```
+
+    Invalid UTF-8 byte:
+
+    ```
+    [json.exception.parse_error.101] parse error at line 3, column 24: syntax error while parsing value - invalid string: ill-formed UTF-8 byte; last read: '"vous \352t'
+    ```
+
+!!! tip
+
+    - Make sure the input is correctly read. Try to write the input to standard output to check if, for instance, the input file was successfully opened.
+    - Paste the input to a JSON validator like <http://jsonlint.com> or a tool like [jq](https://stedolan.github.io/jq/).
+
+### json.exception.parse_error.102
+
+JSON uses the `\uxxxx` format to describe Unicode characters. Code points above 0xFFFF are split into two `\uxxxx` entries ("surrogate pairs"). This error indicates that the surrogate pair is incomplete or contains an invalid code point.
+
+!!! failure "Example message"
+
+    ```
+    parse error at 14: missing or wrong low surrogate
+    ```
+
+!!! note
+
+    This exception is not used any more. Instead [json.exception.parse_error.101](#jsonexceptionparse_error101) with a more detailed description is used.
+
+### json.exception.parse_error.103
+
+Unicode supports code points up to 0x10FFFF. Code points above 0x10FFFF are invalid.
+
+!!! failure "Example message"
+
+    ```
+    parse error: code points above 0x10FFFF are invalid
+    ```
+
+!!! note
+
+    This exception is not used any more. Instead [json.exception.parse_error.101](#jsonexceptionparse_error101) with a more detailed description is used.
+
+### json.exception.parse_error.104
+
+[RFC 6902](https://tools.ietf.org/html/rfc6902) requires a JSON Patch document to be a JSON document that represents an array of objects.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.parse_error.104] parse error: JSON patch must be an array of objects
+    ```
+
+### json.exception.parse_error.105
+
+An operation of a JSON Patch document must contain exactly one "op" member, whose value indicates the operation to perform. Its value must be one of "add", "remove", "replace", "move", "copy", or "test"; other values are errors.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.parse_error.105] parse error: operation 'add' must have member 'value'
+    ```
+    ```
+    [json.exception.parse_error.105] parse error: operation 'copy' must have string member 'from'
+    ```
+    ```
+    [json.exception.parse_error.105] parse error: operation value 'foo' is invalid
+    ```
+
+### json.exception.parse_error.106
+
+An array index in a JSON Pointer ([RFC 6901](https://tools.ietf.org/html/rfc6901)) may be `0` or any number without a leading `0`.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.parse_error.106] parse error: array index '01' must not begin with '0'
+    ```
+
+### json.exception.parse_error.107
+
+A JSON Pointer must be a Unicode string containing a sequence of zero or more reference tokens, each prefixed by a `/` character.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'
+    ```
+
+### json.exception.parse_error.108
+
+In a JSON Pointer, only `~0` and `~1` are valid escape sequences.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'
+    ```
+
+### json.exception.parse_error.109
+
+A JSON Pointer array index must be a number.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.parse_error.109] parse error: array index 'one' is not a number
+    ```
+    ```
+    [json.exception.parse_error.109] parse error: array index '+1' is not a number
+    ```
+
+### json.exception.parse_error.110
+
+When parsing CBOR or MessagePack, the byte vector ends before the complete value has been read.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.parse_error.110] parse error at byte 5: syntax error while parsing CBOR string: unexpected end of input
+    ```
+    ```
+    [json.exception.parse_error.110] parse error at byte 2: syntax error while parsing UBJSON value: expected end of input; last byte: 0x5A
+    ```
+
+### json.exception.parse_error.112
+
+An unexpected byte was read in a [binary format](../features/binary_formats/index.md) or length information is invalid ([BSON](../features/binary_formats/bson.md)).
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.parse_error.112] parse error at byte 1: syntax error while parsing CBOR value: invalid byte: 0x1C
+    ```
+    ```
+    [json.exception.parse_error.112] parse error at byte 1: syntax error while parsing MessagePack value: invalid byte: 0xC1
+    ```
+    ```
+    [json.exception.parse_error.112] parse error at byte 4: syntax error while parsing BJData size: expected '#' after type information; last byte: 0x02
+    ```
+    ```
+    [json.exception.parse_error.112] parse error at byte 4: syntax error while parsing UBJSON size: expected '#' after type information; last byte: 0x02
+    ```
+    ```
+    [json.exception.parse_error.112] parse error at byte 10: syntax error while parsing BSON string: string length must be at least 1, is -2147483648
+    ```
+    ```
+    [json.exception.parse_error.112] parse error at byte 15: syntax error while parsing BSON binary: byte array length cannot be negative, is -1
+    ```
+
+### json.exception.parse_error.113
+
+While parsing a map key, a value that is not a string has been read.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xFF
+    ```
+    ```
+    [json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack string: expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0xFF
+    ```
+    ```
+    [json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON char: byte after 'C' must be in range 0x00..0x7F; last byte: 0x82
+    ```
+
+### json.exception.parse_error.114
+
+The parsing of the corresponding BSON record type is not implemented (yet).
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.parse_error.114] parse error at byte 5: Unsupported BSON record type 0xFF
+    ```
+
+### json.exception.parse_error.115
+
+A UBJSON high-precision number could not be parsed.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.parse_error.115] parse error at byte 5: syntax error while parsing UBJSON high-precision number: invalid number text: 1A
+    ```
+
+## Iterator errors
+
+This exception is thrown if iterators passed to a library function do not match
+the expected semantics.
+
+Exceptions have ids 2xx.
+
+??? example
+
+    The following code shows how an `invalid_iterator` exception can be caught.
+
+    ```cpp
+    --8<-- "examples/invalid_iterator.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/invalid_iterator.output"
+    ```
+
+### json.exception.invalid_iterator.201
+
+The iterators passed to constructor `basic_json(InputIT first, InputIT last)` are not compatible, meaning they do not belong to the same container. Therefore, the range (`first`, `last`) is invalid.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.201] iterators are not compatible
+    ```
+
+### json.exception.invalid_iterator.202
+
+In the [erase](../api/basic_json/erase.md) or insert function, the passed iterator `pos` does not belong to the JSON value for which the function was called. It hence does not define a valid position for the deletion/insertion.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.invalid_iterator.202] iterator does not fit current value
+    ```
+    ```
+    [json.exception.invalid_iterator.202] iterators first and last must point to objects
+    ```
+
+### json.exception.invalid_iterator.203
+
+Either iterator passed to function [`erase(IteratorType first, IteratorType last`)](../api/basic_json/erase.md) does not belong to the JSON value from which values shall be erased. It hence does not define a valid range to delete values from.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.203] iterators do not fit current value
+    ```
+
+### json.exception.invalid_iterator.204
+
+When an iterator range for a primitive type (number, boolean, or string) is passed to a constructor or an [erase](../api/basic_json/erase.md) function, this range has to be exactly (`begin(),` `end()),` because this is the only way the single stored value is expressed. All other ranges are invalid.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.204] iterators out of range
+    ```
+
+### json.exception.invalid_iterator.205
+
+When an iterator for a primitive type (number, boolean, or string) is passed to an [erase](../api/basic_json/erase.md) function, the iterator has to be the `begin()` iterator, because it is the only way to address the stored value. All other iterators are invalid.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.205] iterator out of range
+    ```
+
+### json.exception.invalid_iterator.206
+
+The iterators passed to constructor `basic_json(InputIT first, InputIT last)` belong to a JSON null value and hence to not define a valid range.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.206] cannot construct with iterators from null
+    ```
+
+### json.exception.invalid_iterator.207
+
+The `key()` member function can only be used on iterators belonging to a JSON object, because other types do not have a concept of a key.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.207] cannot use key() for non-object iterators
+    ```
+
+
+### json.exception.invalid_iterator.208
+
+The `operator[]` to specify a concrete offset cannot be used on iterators belonging to a JSON object, because JSON objects are unordered.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.208] cannot use operator[] for object iterators
+    ```
+
+### json.exception.invalid_iterator.209
+
+The offset operators (`+`, `-`, `+=`, `-=`) cannot be used on iterators belonging to a JSON object, because JSON objects are unordered.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.209] cannot use offsets with object iterators
+    ```
+
+### json.exception.invalid_iterator.210
+
+The iterator range passed to the insert function are not compatible, meaning they do not belong to the same container. Therefore, the range (`first`, `last`) is invalid.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.210] iterators do not fit
+    ```
+
+### json.exception.invalid_iterator.211
+
+The iterator range passed to the insert function must not be a subrange of the container to insert to.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.211] passed iterators may not belong to container
+    ```
+
+### json.exception.invalid_iterator.212
+
+When two iterators are compared, they must belong to the same container.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.212] cannot compare iterators of different containers
+    ```
+
+### json.exception.invalid_iterator.213
+
+The order of object iterators cannot be compared, because JSON objects are unordered.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.213] cannot compare order of object iterators
+    ```
+
+### json.exception.invalid_iterator.214
+
+Cannot get value for iterator: Either the iterator belongs to a null value or it is an iterator to a primitive type (number, boolean, or string), but the iterator is different to `begin()`.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.invalid_iterator.214] cannot get value
+    ```
+
+## Type errors
+
+This exception is thrown in case of a type error; that is, a library function is executed on a JSON value whose type does not match the expected semantics.
+
+Exceptions have ids 3xx.
+
+??? example
+
+    The following code shows how a `type_error` exception can be caught.
+
+    ```cpp
+    --8<-- "examples/type_error.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/type_error.output"
+    ```
+
+### json.exception.type_error.301
+
+To create an object from an initializer list, the initializer list must consist only of a list of pairs whose first element is a string. When this constraint is violated, an array is created instead.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.type_error.301] cannot create object from initializer list
+    ```
+
+### json.exception.type_error.302
+
+During implicit or explicit value conversion, the JSON type must be compatible to the target type. For instance, a JSON string can only be converted into string types, but not into numbers or boolean types.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.type_error.302] type must be object, but is null
+    ```
+    ```
+    [json.exception.type_error.302] type must be string, but is object
+    ```
+
+### json.exception.type_error.303
+
+To retrieve a reference to a value stored in a `basic_json` object with `get_ref`, the type of the reference must match the value type. For instance, for a JSON array, the `ReferenceType` must be `array_t &`.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is object
+    ```
+    ```
+    [json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number"
+    ```
+
+### json.exception.type_error.304
+
+The `at()` member functions can only be executed for certain JSON types.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.type_error.304] cannot use at() with string
+    ```
+    ```
+    [json.exception.type_error.304] cannot use at() with number
+    ```
+
+### json.exception.type_error.305
+
+The `operator[]` member functions can only be executed for certain JSON types.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.type_error.305] cannot use operator[] with a string argument with array
+    ```
+    ```
+    [json.exception.type_error.305] cannot use operator[] with a numeric argument with object
+    ```
+
+### json.exception.type_error.306
+
+The `value()` member functions can only be executed for certain JSON types.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.type_error.306] cannot use value() with number
+    ```
+
+### json.exception.type_error.307
+
+The [`erase()`](../api/basic_json/erase.md) member functions can only be executed for certain JSON types.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.type_error.307] cannot use erase() with string
+    ```
+
+### json.exception.type_error.308
+
+The `push_back()` and `operator+=` member functions can only be executed for certain JSON types.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.type_error.308] cannot use push_back() with string
+    ```
+
+### json.exception.type_error.309
+
+The `insert()` member functions can only be executed for certain JSON types.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.type_error.309] cannot use insert() with array
+    ```
+    ```
+    [json.exception.type_error.309] cannot use insert() with number
+    ```
+
+### json.exception.type_error.310
+
+The `swap()` member functions can only be executed for certain JSON types.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.type_error.310] cannot use swap() with number
+    ```
+
+### json.exception.type_error.311
+
+The `emplace()` and `emplace_back()` member functions can only be executed for certain JSON types.
+
+!!! failure "Example messages"
+
+    ```
+    [json.exception.type_error.311] cannot use emplace() with number
+    ```
+    ```
+    [json.exception.type_error.311] cannot use emplace_back() with number
+    ```
+
+### json.exception.type_error.312
+
+The `update()` member functions can only be executed for certain JSON types.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.type_error.312] cannot use update() with array
+    ```
+
+### json.exception.type_error.313
+
+The `unflatten` function converts an object whose keys are JSON Pointers back into an arbitrary nested JSON value. The JSON Pointers must not overlap, because then the resulting value would not be well-defined.
+
+!!! failure "Example message"
+
+    ```
+    [json.exception.type_error.313] invalid value to unflatten
+    ```
+
+### json.exception.type_error.314
+
+The `unflatten` function only works for an object whose keys are JSON Pointers.
+
+!!! failure "Example message"
+
+    Calling `unflatten()` on an array `#!json [1,2,3]`:
+
+    ```
+    [json.exception.type_error.314] only objects can be unflattened
+    ```
+
+### json.exception.type_error.315
+
+The `unflatten()` function only works for an object whose keys are JSON Pointers and whose values are primitive.
+
+!!! failure "Example message"
+
+    Calling `unflatten()` on an object `#!json {"/1", [1,2,3]}`:
+
+    ```
+    [json.exception.type_error.315] values in object must be primitive
+    ```
+
+### json.exception.type_error.316
+
+The `dump()` function only works with UTF-8 encoded strings; that is, if you assign a `std::string` to a JSON value, make sure it is UTF-8 encoded.
+
+!!! failure "Example message"
+
+    Calling `dump()` on a JSON value containing an ISO 8859-1 encoded string:
+    ```
+    [json.exception.type_error.316] invalid UTF-8 byte at index 15: 0x6F
+    ```
+
+!!! tip
+
+    - Store the source file with UTF-8 encoding.
+    - Pass an error handler as last parameter to the `dump()` function to avoid this exception:
+        - `json::error_handler_t::replace` will replace invalid bytes sequences with `U+FFFD` 
+        - `json::error_handler_t::ignore` will silently ignore invalid byte sequences
+
+### json.exception.type_error.317
+
+The dynamic type of the object cannot be represented in the requested serialization format (e.g. a raw `true` or `null` JSON object cannot be serialized to BSON)
+
+!!! failure "Example messages"
+
+    Serializing `#!json null` to BSON:
+    ```
+    [json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is null
+    ```
+    Serializing `#!json [1,2,3]` to BSON:
+    ```
+    [json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is array
+    ```
+
+!!! tip
+
+    Encapsulate the JSON value in an object. That is, instead of serializing `#!json true`, serialize `#!json {"value": true}`
+
+## Out of range
+
+This exception is thrown in case a library function is called on an input parameter that exceeds the expected range, for instance in case of array indices or nonexisting object keys.
+
+Exceptions have ids 4xx.
+
+??? example
+
+    The following code shows how an `out_of_range` exception can be caught.
+
+    ```cpp
+    --8<-- "examples/out_of_range.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/out_of_range.output"
+    ```
+
+### json.exception.out_of_range.401
+
+The provided array index `i` is larger than `size-1`.
+
+!!! failure "Example message"
+
+    ```
+    array index 3 is out of range
+    ```
+
+### json.exception.out_of_range.402
+
+The special array index `-` in a JSON Pointer never describes a valid element of the array, but the index past the end. That is, it can only be used to add elements at this position, but not to read it.
+
+!!! failure "Example message"
+
+    ```
+    array index '-' (3) is out of range
+    ```
+
+### json.exception.out_of_range.403
+
+The provided key was not found in the JSON object.
+
+!!! failure "Example message"
+
+    ```
+    key 'foo' not found
+    ```
+
+### json.exception.out_of_range.404
+
+A reference token in a JSON Pointer could not be resolved.
+
+!!! failure "Example message"
+
+    ```
+    unresolved reference token 'foo'
+    ```
+
+### json.exception.out_of_range.405
+
+The JSON Patch operations 'remove' and 'add' can not be applied to the root element of the JSON value.
+
+!!! failure "Example message"
+
+    ```
+    JSON pointer has no parent
+    ```
+
+### json.exception.out_of_range.406
+
+A parsed number could not be stored as without changing it to NaN or INF.
+
+!!! failure "Example message"
+
+    ```
+    number overflow parsing '10E1000'
+    ```
+
+### json.exception.out_of_range.407
+
+UBJSON and BSON only support integer numbers up to 9223372036854775807.
+
+!!! failure "Example message"
+
+    ```
+    number overflow serializing '9223372036854775808'
+    ```
+
+!!! note
+
+    Since version 3.9.0, integer numbers beyond int64 are serialized as high-precision UBJSON numbers, and this exception does not further occur. 
+
+### json.exception.out_of_range.408
+
+The size (following `#`) of an UBJSON array or object exceeds the maximal capacity.
+
+!!! failure "Example message"
+
+    ```
+    excessive array size: 8658170730974374167
+    ```
+
+### json.exception.out_of_range.409
+
+Key identifiers to be serialized to BSON cannot contain code point U+0000, since the key is stored as zero-terminated c-string.
+
+!!! failure "Example message"
+
+    ```
+    BSON key cannot contain code point U+0000 (at byte 2)
+    ```
+
+## Further exceptions
+
+This exception is thrown in case of errors that cannot be classified with the
+other exception types.
+
+Exceptions have ids 5xx.
+
+??? example
+
+    The following code shows how an `other_error` exception can be caught.
+
+    ```cpp
+    --8<-- "examples/other_error.cpp"
+    ```
+    
+    Output:
+
+    ```
+    --8<-- "examples/other_error.output"
+    ```
+
+### json.exception.other_error.501
+
+A JSON Patch operation 'test' failed. The unsuccessful operation is also printed.
+
+!!! failure "Example message"
+
+    Executing `#!json {"op":"test", "path":"/baz", "value":"bar"}` on `#!json {"baz": "qux"}`:
+
+    ```
+    [json.exception.other_error.501] unsuccessful: {"op":"test","path":"/baz","value":"bar"}
+    ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/faq.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/faq.md
new file mode 100644
index 00000000..dd426e07
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/faq.md
@@ -0,0 +1,180 @@
+# Frequently Asked Questions (FAQ)
+
+## Known bugs
+
+### Brace initialization yields arrays
+
+!!! question
+
+    Why does
+
+    ```cpp
+    json j{true};
+    ```
+
+    and
+
+    ```cpp
+    json j(true);
+    ```
+
+    yield different results (`#!json [true]` vs. `#!json true`)?
+
+This is a known issue, and -- even worse -- the behavior differs between GCC and Clang. The "culprit" for this is the library's constructor overloads for initializer lists to allow syntax like
+
+```cpp
+json array = {1, 2, 3, 4};
+```
+
+for arrays and
+
+```cpp
+json object = {{"one", 1}, {"two", 2}}; 
+```
+
+for objects.
+
+!!! tip
+
+    To avoid any confusion and ensure portable code, **do not** use brace initialization with the types `basic_json`, `json`, or `ordered_json` unless you want to create an object or array as shown in the examples above.
+
+## Limitations
+
+### Relaxed parsing
+
+!!! question
+
+    Can you add an option to ignore trailing commas?
+
+This library does not support any feature which would jeopardize interoperability.
+
+
+### Parse errors reading non-ASCII characters
+
+!!! question "Questions"
+
+    - Why is the parser complaining about a Chinese character?
+    - Does the library support Unicode?
+    - I get an exception `[json.exception.parse_error.101] parse error at line 1, column 53: syntax error while parsing value - invalid string: ill-formed UTF-8 byte; last read: '"Testé$')"`
+
+The library supports **Unicode input** as follows:
+
+- Only **UTF-8** encoded input is supported which is the default encoding for JSON according to [RFC 8259](https://tools.ietf.org/html/rfc8259.html#section-8.1).
+- `std::u16string` and `std::u32string` can be parsed, assuming UTF-16 and UTF-32 encoding, respectively. These encodings are not supported when reading from files or other input containers.
+- Other encodings such as Latin-1 or ISO 8859-1 are **not** supported and will yield parse or serialization errors.
+- [Unicode noncharacters](http://www.unicode.org/faq/private_use.html#nonchar1) will not be replaced by the library.
+- Invalid surrogates (e.g., incomplete pairs such as `\uDEAD`) will yield parse errors.
+- The strings stored in the library are UTF-8 encoded. When using the default string type (`std::string`), note that its length/size functions return the number of stored bytes rather than the number of characters or glyphs.
+- When you store strings with different encodings in the library, calling [`dump()`](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a50ec80b02d0f3f51130d4abb5d1cfdc5.html#a50ec80b02d0f3f51130d4abb5d1cfdc5) may throw an exception unless `json::error_handler_t::replace` or `json::error_handler_t::ignore` are used as error handlers.
+
+In most cases, the parser is right to complain, because the input is not UTF-8 encoded. This is especially true for Microsoft Windows where Latin-1 or ISO 8859-1 is often the standard encoding.
+
+
+### Wide string handling
+
+!!! question
+
+    Why are wide strings (e.g., `std::wstring`) dumped as arrays of numbers?
+
+As described [above](#parse-errors-reading-non-ascii-characters), the library assumes UTF-8 as encoding.  To store a wide string, you need to change the encoding.
+
+!!! example
+
+    ```cpp
+    #include <codecvt> // codecvt_utf8
+    #include <locale>  // wstring_convert
+    
+    // encoding function
+    std::string to_utf8(std::wstring& wide_string)
+    {
+        static std::wstring_convert<std::codecvt_utf8<wchar_t>> utf8_conv;
+        return utf8_conv.to_bytes(wide_string);
+    }
+    
+    json j;
+    std::wstring ws = L"車B1234 こんにちは";
+    
+    j["original"] = ws;
+    j["encoded"] = to_utf8(ws);
+    
+    std::cout << j << std::endl;
+    ```
+    
+    The result is:
+    
+    ```json
+    {
+      "encoded": "車B1234 こんにちは",
+      "original": [36554, 66, 49, 50, 51, 52, 32, 12371, 12435, 12395, 12385, 12399]
+    }
+    ```
+
+## Exceptions
+
+### Parsing without exceptions
+
+!!! question
+
+    Is it possible to indicate a parse error without throwing an exception?
+
+Yes, see [Parsing and exceptions](../features/parsing/parse_exceptions.md).
+
+
+### Key name in exceptions
+
+!!! question
+
+    Can I get the key of the object item that caused an exception?
+
+Yes, you can. Please define the symbol [`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md) to get [extended diagnostics messages](exceptions.md#extended-diagnostic-messages).
+
+
+## Serialization issues
+
+
+### Number precision
+
+!!! question
+
+    - It seems that precision is lost when serializing a double.
+    - Can I change the precision for floating-point serialization?
+
+The library uses `std::numeric_limits<number_float_t>::digits10` (15 for IEEE `double`s) digits for serialization. This value is sufficient to guarantee roundtripping. If one uses more than this number of digits of precision, then string -> value -> string is not guaranteed to round-trip.
+
+!!! quote "[cppreference.com](https://en.cppreference.com/w/cpp/types/numeric_limits/digits10)"
+
+    The value of `std::numeric_limits<T>::digits10` is the number of base-10 digits that can be represented by the type T without change, that is, any number with this many significant decimal digits can be converted to a value of type T and back to decimal form, without change due to rounding or overflow. 
+
+!!! tip
+
+    The website https://float.exposed gives a good insight into the internal storage of floating-point numbers.
+
+See [this section](../features/types/number_handling.md#number-serialization) on the library's number handling for more information.
+
+## Compilation issues
+
+### Android SDK
+
+!!! question
+
+    Why does the code not compile with Android SDK?
+
+Android defaults to using very old compilers and C++ libraries. To fix this, add the following to your `Application.mk`. This will switch to the LLVM C++ library, the Clang compiler, and enable C++11 and other features disabled by default.
+
+```ini
+APP_STL := c++_shared
+NDK_TOOLCHAIN_VERSION := clang3.6
+APP_CPPFLAGS += -frtti -fexceptions
+```
+
+The code compiles successfully with [Android NDK](https://developer.android.com/ndk/index.html?hl=ml), Revision 9 - 11 (and possibly later) and [CrystaX's Android NDK](https://www.crystax.net/en/android/ndk) version 10.
+
+
+### Missing STL function
+
+!!! question "Questions"
+
+    - Why do I get a compilation error `'to_string' is not a member of 'std'` (or similarly, for `strtod` or `strtof`)?
+    - Why does the code not compile with MinGW or Android SDK?
+
+This is not an issue with the code,  but rather with the compiler itself. On Android, see above to build with a newer environment.  For MinGW, please refer to [this site](http://tehsausage.com/mingw-to-string) and [this discussion](https://github.com/nlohmann/json/issues/136) for information on how to fix this bug. For Android NDK using `APP_STL := gnustl_static`, please refer to [this discussion](https://github.com/nlohmann/json/issues/219).
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/license.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/license.md
new file mode 100644
index 00000000..391d77a4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/license.md
@@ -0,0 +1,21 @@
+# License
+
+<img align="right" src="https://149753425.v2.pressablecdn.com/wp-content/uploads/2009/06/OSIApproved_100X125.png">
+
+The class is licensed under the [MIT License](https://opensource.org/licenses/MIT):
+
+Copyright &copy; 2013-2024 [Niels Lohmann](https://nlohmann.me)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+* * *
+
+The class contains the UTF-8 Decoder from Bjoern Hoehrmann which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2008-2009 [Björn Hoehrmann](http://bjoern.hoehrmann.de/) <bjoern@hoehrmann.de>
+
+The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](https://florian.loitsch.com/)
+
+The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/releases.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/releases.md
new file mode 100644
index 00000000..5237c425
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/releases.md
@@ -0,0 +1,1225 @@
+# Releases
+
+## v3.7.3
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.7.3/include.zip) (274 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.7.3/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.7.3/json.hpp) (791 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.7.3/json.hpp.asc) (1 KB)
+
+Release date: 2019-11-17
+SHA-256: 3b5d2b8f8282b80557091514d8ab97e27f9574336c804ee666fda673a9b59926 (json.hpp), 87b5884741427220d3a33df1363ae0e8b898099fbc59f1c451113f6732891014 (include.zip)
+
+### Summary
+
+This release fixes a bug introduced in release 3.7.2 which could yield quadratic complexity in destructor calls. All changes are backward-compatible.
+
+### :bug: Bug Fixes
+
+- Removed `reserve()` calls from the destructor which could lead to quadratic complexity. #1837 #1838
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+
+## v3.7.2
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.7.2/include.zip) (274 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.7.2/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.7.2/json.hpp) (791 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.7.2/json.hpp.asc) (1 KB)
+
+Release date: 2019-11-10
+SHA-256: 0a65fcbbe1b334d3f45c9498e5ee28c3f3b2428aea98557da4a3ff12f0f14ad6 (json.hpp), 67f69c9a93b7fa0612dc1b6273119d2c560317333581845f358aaa68bff8f087 (include.zip)
+
+### Summary
+
+Project [bad_json_parsers](https://github.com/lovasoa/bad_json_parsers) tested how JSON parser libraries react on **deeply nested inputs**. It turns out that this library segfaulted at a certain nesting depth. This bug was fixed with this release. **Now the parsing is only bounded by the available memory.** All changes are backward-compatible.
+
+### :bug: Bug Fixes
+
+* Fixed a bug that lead to stack overflow for deeply nested JSON values (objects, array) by changing the implementation of the destructor from a recursive to an iterative approach. #832, #1419, #1835
+
+### :hammer: Further Changes
+
+* Added WhiteStone Bolt. #1830
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.7.1
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.7.1/include.zip) (273 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.7.1/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.7.1/json.hpp) (789 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.7.1/json.hpp.asc) (1 KB)
+
+Release date: 2019-11-06
+SHA-256: b5ba7228f3c22a882d379e93d08eab4349458ee16fbf45291347994eac7dc7ce (json.hpp), 77b9f54b34e7989e6f402afb516f7ff2830df551c3a36973085e2c7a6b1045fe (include.zip)
+
+### Summary
+
+This release fixes several small bugs in the library. All changes are backward-compatible.
+
+### :bug: Bug Fixes
+
+- Fixed a segmentation fault when serializing `std::int64_t` minimum value. #1708 #1722
+- Fixed the [`contains()`](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_ab23b04802eb9da97dc3f664e54e09cb3.html#ab23b04802eb9da97dc3f664e54e09cb3) function for JSON Pointers. #1727 #1741
+- Fixed too lax SFINAE guard for conversion from `std::pair` and `std::tuple` to `json`. #1805 #1806 #1825 #1826
+- Fixed some regressions detected by UBSAN. Updated CI to use Clang-Tidy 7.1.0. #1716 #1728
+- Fixed integer truncation in `iteration_proxy`. #1797
+- Updated [Hedley](https://github.com/nemequ/hedley) to v11 to [fix a E2512 error](https://github.com/nemequ/hedley/issues/28) in MSVC. #1799
+- Fixed a compile error in enum deserialization of non non-default-constructible types. #1647 #1821
+- Fixed the conversion from `json` to `std::valarray`.
+
+### :zap: Improvements
+
+- The [`items()`](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) function can now be used with a custom string type. #1765
+- Made [`json_pointer::back`](https://nlohmann.github.io/json/classnlohmann_1_1json__pointer_a213bc67c32a30c68ac6bf06f5195d482.html#a213bc67c32a30c68ac6bf06f5195d482) `const`. #1764 #1769
+- Meson is part of the release archive. #1672 #1694 
+- Improved documentation on the Meson and Spack package manager. #1694 #1720
+
+### :hammer: Further Changes
+
+- Added GitHub Workflow with `ubuntu-latest`/GCC 7.4.0 as CI step.
+- Added GCC 9 to Travis CI to compile with C++20 support. #1724
+- Added MSVC 2019 to the AppVeyor CI. #1780
+- Added badge to [fuzzing status](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:json).
+- Fixed some cppcheck warnings. #1760
+- Fixed several typos in the documentation. #1720 #1767 #1803
+- Added documentation on the `JSON_THROW_USER`, `JSON_TRY_USER`, and `JSON_CATCH_USER` macros to control user-defined exception handling.
+- Used GitHub's [CODEOWNERS](https://github.com/nlohmann/json/blob/develop/.github/CODEOWNERS) and [SECURITY](https://github.com/nlohmann/json/blob/develop/.github/SECURITY.md) feature.
+- Removed `GLOB` from CMake files. #1779
+- Updated to [Doctest](https://github.com/onqtam/doctest) 2.3.5.
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.7.0
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.7.0/include.zip) (143 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.7.0/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.7.0/json.hpp) (782 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.7.0/json.hpp.asc) (1 KB)
+
+Release date: 2019-07-28
+SHA-256: a503214947952b69f0062f572cb74c17582a495767446347ce2e452963fc2ca4 (json.hpp), 541c34438fd54182e9cdc68dd20c898d766713ad6d901fb2c6e28ff1f1e7c10d (include.zip)
+
+### Summary
+
+This release introduces a few convenience functions and performs a lot of house keeping (bug fixes and small improvements). All changes are backward-compatible.
+
+### :sparkles: New Features
+
+- Add overload of the **[`contains`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab23b04802eb9da97dc3f664e54e09cb3.html#ab23b04802eb9da97dc3f664e54e09cb3) function** to check if a JSON pointer is valid without throwing exceptions, just like its [counterpart for object keys](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9286acdc0578fc66e9346323e69fc0e3.html#a9286acdc0578fc66e9346323e69fc0e3). #1600
+- Add a function **[`to_string`](http://nlohmann.github.io/json/doxygen/namespacenlohmann_a6ce645a0b8717757e096a5b5773b7a16.html#a6ce645a0b8717757e096a5b5773b7a16)** to allow for generic conversion to strings. #916 #1585
+- Add **return value for the [`emplace_back`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_abf29131f898b05aad2c01a9c80e7a002.html#abf29131f898b05aad2c01a9c80e7a002) function**, returning a reference to the added element just like C++17 is [introducing this](https://en.cppreference.com/w/cpp/container/vector/emplace_back) for `std::vector`. #1609
+- Add info how to use the library with the **[pacman](https://wiki.archlinux.org/index.php/pacman) package manager** on MSYS2. #1670
+
+### :bug: Bug Fixes
+
+- Fix an issue where typedefs with certain names yielded a compilation error. #1642 #1643
+- Fix a conversion to `std::string_view` in the unit tests. #1634 #1639
+- Fix MSVC Debug build. #1536 #1570 #1608
+- Fix [`get_to`](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a65753c68f06639eda0d355f919564e01.html#a65753c68f06639eda0d355f919564e01) method to clear existing content before writing. #1511 #1555
+- Fix a `-Wc++17-extensions` warning. `nodiscard` attributes are now only used with Clang when `-std=c++17` is used. #1535 #1551
+
+### :zap: Improvements
+
+- Switch from [Catch](https://github.com/philsquared/Catch) to **[doctest](https://github.com/onqtam/doctest)** for the unit tests which speeds up compilation and runtime of the 112,112,308 tests.
+- Add an explicit section to the [README](https://github.com/nlohmann/json/blob/develop/README.md) about the **frequently addressed topics** [character encoding](https://github.com/nlohmann/json#character-encoding), [comments in JSON](https://github.com/nlohmann/json#comments-in-json), and the [order of object keys](https://github.com/nlohmann/json#order-of-object-keys).
+
+### :hammer: Further Changes
+
+- Use [`GNUInstallDirs`](https://cmake.org/cmake/help/v3.0/module/GNUInstallDirs.html) to set library install directories. #1673
+- Fix links in the [README](https://github.com/nlohmann/json/blob/develop/README.md). #1620 #1621 #1622 #1623 #1625
+- Mention [`json` type](http://nlohmann.github.io/json/doxygen/namespacenlohmann_a2bfd99e845a2e5cd90aeaf1b1431f474.html#a2bfd99e845a2e5cd90aeaf1b1431f474) on the [documentation start page](http://nlohmann.github.io/json/doxygen/index.html). #1616
+- Complete documentation of [`value()` function](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_adcf8ca5079f5db993820bf50036bf45d.html#adcf8ca5079f5db993820bf50036bf45d) with respect to `type_error.302` exception. #1601
+- Fix links in the documentation. #1598
+- Add regression tests for MSVC. #1543 #1570
+- Use **[CircleCI](http://circleci.com)** for [continuous integration](https://circleci.com/gh/nlohmann/json).
+- Use **[Doozer](https://doozer.io)** for [continuous integration](https://doozer.io/nlohmann/json) on Linux (CentOS, Raspbian, Fedora)
+- Add tests to check each CMake flag (`JSON_BuildTests`, `JSON_Install`, `JSON_MultipleHeaders`, `JSON_Sanitizer`, `JSON_Valgrind`, `JSON_NoExceptions`, `JSON_Coverage`).
+- Use [Hedley](https://nemequ.github.io/hedley/) to avoid re-inventing several compiler-agnostic feature macros like `JSON_DEPRECATED`, `JSON_NODISCARD`, `JSON_LIKELY`, `JSON_UNLIKELY`, `JSON_HAS_CPP_14`, or `JSON_HAS_CPP_17`. Functions taking or returning pointers are annotated accordingly when a pointer will not be null.
+- Build and run tests on [AppVeyor](https://ci.appveyor.com/project/nlohmann/json) in DEBUG and RELEASE mode.
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.6.1
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.6.1/include.zip) (136 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.6.1/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.6.1/json.hpp) (711 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.6.1/json.hpp.asc) (1 KB)
+
+Release date: 2019-03-20
+SHA-256: d2eeb25d2e95bffeb08ebb7704cdffd2e8fca7113eba9a0b38d60a5c391ea09a (json.hpp), 69cc88207ce91347ea530b227ff0776db82dcb8de6704e1a3d74f4841bc651cf (include.zip)
+
+### Summary
+
+This release **fixes a regression and a bug** introduced by the earlier 3.6.0 release. All changes are backward-compatible.
+
+### :bug: Bug Fixes
+
+- Fixed regression of #590 which could lead to compilation errors with GCC 7 and GCC 8. #1530
+- Fixed a compilation error when `<Windows.h>` was included. #1531
+
+### :hammer: Further Changes
+
+- Fixed a warning for missing field initializers. #1527
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.6.0
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.6.0/include.zip) (136 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.6.0/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.6.0/json.hpp) (711 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.6.0/json.hpp.asc) (1 KB)
+
+Release date: 2019-03-20
+SHA-256: ce9839370f28094c71107c405affb3b08c4a098154988014cbb0800b1c44a831 (json.hpp), 237c5e66e7f8186a02804ce9dbd5f69ce89fe7424ef84adf6142e973bd9532f4 (include.zip)
+
+ℹ️ **This release introduced a regression. Please update to [version 3.6.1](https://github.com/nlohmann/json/releases/tag/v3.6.1)!**
+
+### Summary
+
+This release adds some **convenience functions for JSON Pointers**, introduces a [`contains`](
+http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a0a45fc740637123fdf05fef970f8be47.html#a0a45fc740637123fdf05fef970f8be47) function to check if a key is present in an object, and improves the **performance of integer serialization**. Furthermore, a lot of small bug fixes and improvements have been made. All changes are backward-compatible.
+
+### :sparkles: New Features
+
+- Overworked the public interface for JSON Pointers. The creation of JSON Pointers is simplified with [`operator/`](
+http://nlohmann.github.io/json/doxygen/classnlohmann_1_1json__pointer_a90a11fe6c7f37b1746a3ff9cb24b0d53.html#a90a11fe6c7f37b1746a3ff9cb24b0d53) and [`operator/=`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1json__pointer_a7395bd0af29ac23fd3f21543c935cdfa.html#a7395bd0af29ac23fd3f21543c935cdfa). JSON Pointers can be inspected with [`empty`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1json__pointer_a649252bda4a2e75a0915b11a25d8bcc3.html#a649252bda4a2e75a0915b11a25d8bcc3), [`back`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1json__pointer_a6bd5b554c10f15672135c216893eef31.html#a6bd5b554c10f15672135c216893eef31),  and [`parent_pointer`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1json__pointer_afdaacce1edb7145e0434e014f0e8685a.html#afdaacce1edb7145e0434e014f0e8685a), and manipulated with [`push_back`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1json__pointer_a697d12b5bd6205f8866691b166b7c7dc.html#a697d12b5bd6205f8866691b166b7c7dc) and [`pop_back`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1json__pointer_a4b1ee4d511ca195bed896a3da47e264c.html#a4b1ee4d511ca195bed896a3da47e264c). #1434
+- Added a boolean method [`contains`](
+http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a0a45fc740637123fdf05fef970f8be47.html#a0a45fc740637123fdf05fef970f8be47) to check whether an element exists in a JSON object with a given key. Returns false when called on non-object types. #1471 #1474
+
+### :bug: Bug Fixes
+
+- Fixed a compilation issues with libc 2.12. #1483 #1514
+- Fixed endian conversion on PPC64. #1489
+- Fixed library to compile with GCC 9. #1472 #1492
+- Fixed a compilation issue with GCC 7 on CentOS. #1496
+- Fixed an integer overflow. #1447
+- Fixed buffer flushing in serializer. #1445 #1446
+
+### :zap: Improvements
+
+- The performance of dumping integers has been greatly improved. #1411
+- Added CMake parameter `JSON_Install` to control whether the library should be installed (default: on). #1330
+- Fixed a lot of compiler and linter warnings. #1400 #1435 #1502
+- Reduced required CMake version from 3.8 to 3.1. #1409 #1428 #1441 #1498
+- Added `nodiscard` attribute to `meta()`, `array()`, `object()`, `from_cbor`, `from_msgpack`, `from_ubjson`, `from_bson`, and `parse`. #1433
+
+### :hammer: Further Changes
+
+- Added missing headers. #1500
+- Fixed typos and broken links in README. #1417 #1423 #1425 #1451 #1455 #1491
+- Fixed documentation of parse function. #1473
+- Suppressed warning that cannot be fixed inside the library. #1401 #1468
+- Imroved package manager suppert:
+    - Updated Buckaroo instructions. #1495
+    - Improved Meson support. #1463
+    - Added Conda package manager documentation. #1430
+    - Added NuGet package manager documentation. #1132
+- Continuous Integration
+    - Removed unstable or deprecated Travis builders (Xcode 6.4 - 8.2) and added Xcode 10.1 builder.
+    - Added Clang 7 to Travis CI.
+    - Fixed AppVeyor x64 builds. #1374 #1414
+- Updated thirdparty libraries:
+    - Catch 1.12.0 -> 1.12.2
+    - Google Benchmark 1.3.0 -> 1.4.1
+    - Doxygen 1.8.15 -> 1.8.16
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.5.0
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.5.0/include.zip) (133 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.5.0/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.5.0/json.hpp) (693 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.5.0/json.hpp.asc) (1 KB)
+
+Release date: 2018-12-22
+SHA-256: 8a6dbf3bf01156f438d0ca7e78c2971bca50eec4ca6f0cf59adf3464c43bb9d5 (json.hpp), 3564da9c5b0cf2e032f97c69baedf10ddbc98030c337d0327a215ea72259ea21 (include.zip)
+
+### Summary
+
+This release introduces the support for **structured bindings** and reading from **`FILE*`**. Besides, a few bugs have been fixed. All changes are backward-compatible.
+
+### :sparkles: New Features
+
+- **Structured bindings** are now supported for JSON objects and arrays via the [`items()`](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) member function, so finally this code is possible:
+  ```cpp
+  for (auto& [key, val] : j.items()) {
+      std::cout << key << ':' << val << '\n';
+  }
+  ```  
+  #1388 #1391
+
+- Added support for **reading from `FILE*`** to support situations in which streams are nit available or would require too much RAM. #1370 #1392
+
+### :bug: Bug Fixes
+
+- The `eofbit` was not set for input streams when the end of a stream was reached while parsing. #1340 #1343
+- Fixed a bug in the SAX parser for BSON arrays.
+
+### :zap: Improvements
+
+- Added support for Clang 5.0.1 (PS4 version). #1341 #1342
+
+### :hammer: Further Changes
+
+- Added a warning for implicit conversions to the documentation: It is not recommended to use implicit conversions when reading **from** a JSON value. Details about this recommendation can be found [here](https://www.github.com/nlohmann/json/issues/958).  #1363
+- Fixed typos in the documentation. #1329 #1380 #1382
+- Fixed a C4800 warning. #1364
+- Fixed a `-Wshadow` warning #1346
+- Wrapped `std::snprintf` calls to avoid error in MSVC. #1337
+- Added code to allow installation via Meson. #1345
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.4.0
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.4.0/include.zip) (132 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.4.0/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.4.0/json.hpp) (689 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.4.0/json.hpp.asc) (1 KB)
+
+Release date: 2018-10-30
+SHA-256: 63da6d1f22b2a7bb9e4ff7d6b255cf691a161ff49532dcc45d398a53e295835f (json.hpp), bfec46fc0cee01c509cf064d2254517e7fa80d1e7647fea37cf81d97c5682bdc (include.zip)
+
+### Summary
+
+This release introduces three new features:
+
+- **BSON (Binary JSON)** is next to CBOR, MessagePack, and UBJSON the fourth binary (de)serialization format supported by the library.
+- **Adjustable error handlers for invalid Unicode** allows to specify the behavior when invalid byte sequences are serialized.
+- **Simplified enum/JSON mapping** with a macro in case the default mapping to integers is not desired.
+
+Furthermore, some effort has been invested in improving the **parse error messages**. Besides, a few bugs have been fixed. All changes are backward-compatible.
+
+### :sparkles: New Features
+
+- The library can read and write a subset of **[BSON](http://bsonspec.org/) (Binary JSON)**. All data types known from JSON are supported, whereas other types more tied to MongoDB such as timestamps, object ids, or binary data are currently not implemented. See [the README](https://github.com/nlohmann/json#binary-formats-bson-cbor-messagepack-and-ubjson) for examples. #1244 #1320
+- The behavior when the library encounters an invalid Unicode sequence during serialization can now be controlled by defining one of three **Unicode error handlers**: (1) throw an exception (default behavior), (2) replace invalid sequences by the Unicode replacement character (U+FFFD), or (3) ignore/filter invalid sequences. See the [documentation of the `dump` function](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a50ec80b02d0f3f51130d4abb5d1cfdc5.html#a50ec80b02d0f3f51130d4abb5d1cfdc5) for examples. #1198 #1314
+- To easily specify a user-defined **enum/JSON mapping**, a macro `NLOHMANN_JSON_SERIALIZE_ENUM` has been introduced. See the [README section](https://github.com/nlohmann/json#specializing-enum-conversion) for more information. #1208 #1323
+
+### :bug: Bug Fixes
+
+- fixed truncation #1286 #1315
+- fixed an issue with std::pair #1299 #1301
+- fixed an issue with std::variant #1292 #1294
+- fixed a bug in the JSON Pointer parser
+
+### :zap: Improvements
+
+- The **diagnosis messages for parse errors** have been improved: error messages now indicated line/column positions where possible (in addition to a byte count) and also the context in which the error occurred (e.g., "while parsing a JSON string"). Example: error `parse error at 2: syntax error - invalid string: control character must be escaped; last read: '<U+0009>'` is now reported as `parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0009 (HT) must be escaped to \u0009 or \t; last read: '<U+0009>'`. #1280 #1288 #1303
+
+### :hammer: Further Changes
+
+- improved Meson documentation #1305
+- fixed some more linter warnings #1280
+- fixed Clang detection for third-party Google Benchmark library #1277
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.3.0
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.3.0/include.zip) (123 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.3.0/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.3.0/json.hpp) (635 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.3.0/json.hpp.asc) (1 KB)
+
+Release date: 2018-10-05
+SHA-256: f1327bb60c58757a3dd2b0c9c45d49503d571337681d950ec621f8374bcc14d4 (json.hpp), 9588d63557333aaa485e92221ec38014a85a6134e7486fe3441e0541a5a89576 (include.zip)
+
+### Summary
+
+This release adds support for **GCC 4.8**. Furthermore, it adds a function [**`get_to`**](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a8a3db7d78f74232d3a6fb8f1abf69709.html#a8a3db7d78f74232d3a6fb8f1abf69709) to write a JSON value to a passed reference. Another topic of this release was the **CMake support** which has been overworked and documented.
+
+Besides, a lot of bugs have been fixed and slight improvements have been made. All changes are backward-compatible.
+
+### :sparkles: New Features
+
+- The library can now also built with **GCC 4.8**. Though this compiler does not fully support C++11, it can successfully compile and run the test suite. Note that bug [57824](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57824) in GCC 4.8 still forbids to use multiline raw strings in arguments to macros. #1257
+- Added new function [**`get_to`**](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a8a3db7d78f74232d3a6fb8f1abf69709.html#a8a3db7d78f74232d3a6fb8f1abf69709) to write a JSON value to a passed reference. The destination type is automatically derived which allows more succinct code compared to the `get` function. #1227 #1231
+
+### :bug: Bug Fixes
+
+- Fixed a bug in the CMake file that made `target_link_libraries` to not properly include `nlohmann_json`. #1243 #1245 #1260
+- Fixed a warning in MSVC 2017 complaining about a constexpr if. #1204 #1268 #1272
+- Fixed a bug that prevented compilation with ICPC. #755 #1222
+- Improved the SFINAE correctness to fix a bug in the conversion operator. #1237 #1238
+- Fixed a `-Wctor-dtor-privacy` warning. #1224
+- Fixed a warning on a lambda in unevaluated context. #1225 #1230
+- Fixed a bug introduced in version 3.2.0 where defining `JSON_CATCH_USER` led to duplicate macro definition of `JSON_INTERNAL_CATCH`. #1213 #1214
+- Fixed a bug that prevented compilation with Clang 3.4.2 in RHEL 7. #1179 #1249
+
+### :zap: Improvements
+
+- Added [documentation on CMake integration](https://github.com/nlohmann/json#cmake) of the library. #1270
+- Changed the CMake file to use `find_package(nlohmann_json)` without installing the library. #1202
+- Improved error messages in case `operator[]` is used with the wrong combination (json.exception.type_error.305) of JSON container type and argument type. Example: "cannot use operator[] with a string argument". #1220 #1221
+- Added a license and version information to the Meson build file. #1252
+- Removed static assertions to indicated missing `to_json` or `from_json` functions as such assertions do not play well with SFINAE. These assertions also led to problems with GMock. #960 #1212 #1228
+- The test suite now does not wait forever if run in a wrong directory and input files are not found. #1262
+- The test suite does not show deprecation warnings for deprecated functions which frequently led to confusion. #1271
+
+### :hammer: Further Changes
+
+- GCC 4.8 and Xcode 10 were added to the [continuous integration suite](https://travis-ci.org/nlohmann/json) at Travis.
+- Added [lgtm](https://lgtm.com/projects/g/nlohmann/json/context:cpp) checks to pull requests.
+- Added tests for CMake integration. #1260
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+
+## v3.2.0
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.2.0/include.zip) (124 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.2.0/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.2.0/json.hpp) (636 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.2.0/json.hpp.asc) (1 KB)
+
+Release date: 2018-08-20
+SHA-256: ce6b5610a051ec6795fa11c33854abebb086f0fd67c311f5921c3c07f9531b44 (json.hpp), 35ee642558b90e2f9bc758995c4788c4b4d4dec54eef95fb8f38cb4d49c8fc7c (include.zip)
+
+### Summary
+
+This release introduces a [**SAX interface**](https://nlohmann.github.io/json/structnlohmann_1_1json__sax.html) to the library. While this may be a very special feature used by only few people, it allowed to unify all functions that consumed input and created some kind of JSON value. Internally, now all existing functions like `parse`, `accept`, `from_cbor`, `from_msgpack`, and `from_ubjson` use the SAX interface with different event processors. This allowed to separate the input processing from the value generation. Furthermore, throwing an exception in case of a parse error is now optional and up to the event processor. Finally, the JSON parser is now non-recursive (meaning it does not use the call stack, but `std::vector<bool>` to track the hierarchy of structured values) which allows to process nested input more efficiently.
+
+Furthermore, the library finally is able to parse from **wide string types**. This is the first step toward opening the library from UTF-8 to UTF-16 and UTF-32.
+
+This release further fixes several bugs in the library. All changes are backward-compatible.
+
+### :sparkles: New Features
+
+- added a parser with a **SAX interface** (#971, #1153)
+- support to parse from **wide string types** `std::wstring`, `std::u16string`, and `std::u32string`; the input will be converted to UTF-8 (#1031)
+- added support for **`std::string_view`** when using C++17 (#1028)
+- allow to **roundtrip `std::map` and `std::unordered_map`** from JSON if key type is not convertible to string; in these cases, values are serialized to arrays of pairs (#1079, #1089, #1133, #1138)
+
+### :bug: Bug Fixes
+
+- allow to create `nullptr_t` from JSON allowing to properly roundtrip `null` values (#1169)
+- allow compare user-defined string types (#1130)
+- better support for algorithms using iterators from `items()` (#1045, #1134)
+- added parameter to avoid compilation error with MSVC 2015 debug builds (#1114)
+- re-added accidentally skipped unit tests (#1176)
+- fixed MSVC issue with `std::swap` (#1168)
+
+### :zap: Improvements
+
+- `key()` function for iterators returns a const reference rather than a string copy (#1098)
+- binary formats CBOR, MessagePack, and UBJSON now supports `float` as type for floating-point numbers (#1021)
+
+### :hammer: Further Changes
+
+- changed issue templates
+- improved continuous integration: added builders for Xcode 9.3 and 9.4, added builders for GCC 8 and Clang 6, added builder for MinGW, added builders for MSVC targeting x86
+- required CMake version is now at least 3.8 (#1040)
+- overworked CMake file wrt. packaging (#1048)
+- added package managers: Spack (#1041) and CocoaPods (#1148)
+- fixed Meson include directory (#1142)
+- preprocessor macro `JSON_SKIP_UNSUPPORTED_COMPILER_CHECK` can skip the rejection of unsupported compilers - use at your own risk! (#1128)
+- preprocessor macro `JSON_INTERNAL_CATCH`/`JSON_INTERNAL_CATCH_USER` allows to control the behavior of exception handling inside the library (#1187)
+- added note on `char` to JSON conversion
+- added note how to send security-related issue via encrypted email
+- removed dependency to `std::stringstream` (#1117)
+- added SPDX-License-Identifier
+- added updated JSON Parsing Test Suite, described in [Parsing JSON is a Minefield 💣](http://seriot.ch/parsing_json.php)
+- updated to Catch 1.12.0
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+
+
+## v3.1.2
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.1.2/include.zip) (115 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.1.2/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.1.2/json.hpp) (582 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.1.2/json.hpp.asc) (1 KB)
+
+Release date: 2018-03-14
+SHA-256: fbdfec4b4cf63b3b565d09f87e6c3c183bdd45c5be1864d3fcb338f6f02c1733 (json.hpp), 495362ee1b9d03d9526ba9ccf1b4a9c37691abe3a642ddbced13e5778c16660c (include.zip)
+
+### Summary
+
+This release fixes several bugs in the library. All changes are backward-compatible.
+
+### :bug: Bug Fixes
+
+- Fixed a **memory leak** occurring in the parser callback (#1001).
+- Different **specializations of `basic_json`** (e.g., using different template arguments for strings or objects) can now be used in assignments (#972, #977, #986).
+- Fixed a logical error in an iterator range check (#992).
+
+### :zap: Improvements
+
+- The parser and the serialization now support **user-defined string types** (#1006, #1009).
+
+### :hammer: Further Changes
+
+- **[Clang Analyzer](http://clang-analyzer.llvm.org)** is now used as additional static analyzer; see `make clang_analyze`.
+- Overworked [README](https://github.com/nlohmann/json/blob/develop/README.md) by adding links to the [documentation](https://nlohmann.github.io/json/) (#981).
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+
+## v3.1.1
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.1.1/include.zip) (114 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.1.1/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.1.1/json.hpp) (577 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.1.1/json.hpp.asc) (1 KB)
+
+Release date: 2018-02-13
+SHA-256: e14ce5e33d6a2daf748026bd4947f3d9686ca4cfd53d10c3da46a0a9aceb7f2e (json.hpp), fde771d4b9e4f222965c00758a2bdd627d04fb7b59e09b7f3d1965abdc848505 (include.zip)
+
+### Summary
+
+This release fixes several bugs in the library. All changes are backward-compatible.
+
+### :bug: Bug Fixes
+
+- Fixed parsing of **CBOR strings with indefinite length** (#961). Earlier versions of this library misinterpreted the CBOR standard and rejected input with the `0x7F` start byte.
+- Fixed user-defined **conversion to vector type** (#924, #969). A wrong SFINAE check rejected code though a user-defined conversion was provided.
+- Fixed documentation of the parser behavior for **objects with duplicate keys** (#963). The exact behavior is not specified by [RFC 8259](https://tools.ietf.org/html/rfc8259) and the library now also provides no guarantee which object key is stored.
+- Added check to detect memory **overflow when parsing UBJSON containers** (#962). The optimized UBJSON format allowed for specifying an array with billions of `null` elements with a few bytes and the library did not check whether this size exceeded `max_size()`.
+
+### :hammer: Further Changes
+
+- [Code coverage](https://coveralls.io/github/nlohmann/json) is now calculated for the individual header files, allowing to find uncovered lines more quickly than by browsing through the single header version (#953, #957).
+- A Makefile target `run_benchmarks` was added to quickly build and run the benchmark suite.
+- The documentation was harmonized with respect to the header inclusion (#955). Now all examples and the README use `#include <nlohmann/json.hpp>` to allow for selecting `single_include` or `include` or whatever installation folder as include directory.
+- Added note on how to use the library with the [cget](http://cget.readthedocs.io/en/latest/) package manager (#954).
+
+### :fire: Deprecated functions
+
+This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
+- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.1.0
+
+!!! summary "Files"
+
+    - [include.zip](https://github.com/nlohmann/json/releases/download/v3.1.0/include.zip) (114 KB)
+    - [include.zip.asc](https://github.com/nlohmann/json/releases/download/v3.1.0/include.zip.asc) (1 KB)
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.1.0/json.hpp) (577 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.1.0/json.hpp.asc) (1 KB)
+
+Release date: 2018-02-01
+SHA-256: d40f614d10a6e4e4e80dca9463da905285f20e93116c36d97d4dc1aa63d10ba4 (json.hpp), 2b7234fca394d1e27b7e017117ed80b7518fafbb4f4c13a7c069624f6f924673 (include.zip)
+
+### Summary
+
+This release adds support for the [**UBJSON**](http://ubjson.org) format and [**JSON Merge Patch**](https://tools.ietf.org/html/rfc7386). It also contains some minor changes and bug fixes. All changes are backward-compatible.
+
+### :sparkles: New features
+
+- The library now supports [**UBJSON**](http://ubjson.org) (Universal Binary JSON Specification) as binary format to read and write JSON values space-efficiently. See the [documentation overview](https://github.com/nlohmann/json/blob/develop/doc/binary_formats.md) for a comparison of the different formats CBOR, MessagePack, and UBJSON.
+- [**JSON Merge Patch**](https://tools.ietf.org/html/rfc7386) (RFC 7386) offers an intuitive means to describe patches between JSON values (#876, #877). See the documentation of [`merge_patch`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a0ec0cd19cce42ae6071f3cc6870ea295.html#a0ec0cd19cce42ae6071f3cc6870ea295) for more information.
+
+### :zap: Improvements
+
+- The library now uses the **Grisu2 algorithm** for printing floating-point numbers (based on the reference implementation by Florian Loitsch) which produces a short representation which is guaranteed to round-trip (#360, #935, #936).
+- The **UTF-8 handling** was further simplified by using the decoder of Björn Hoehrmann in more scenarios.
+
+### :truck: Reorganization
+
+- Though the library is released as a single header, its development got more and more complicated. With this release, the header is **split into several files** and the single-header file `json.hpp` can be generated from these development sources. In the repository, folder `include` contains the development sources and `single_include` contains the single `json.hpp` header (#700, #906, #907, #910, #911, #915, #920, #924, #925, #928, #944).
+- The split further allowed for a **forward declaration header** `include/nlohmann/json_fwd.hpp` to speed up compilation times (#314).
+
+### :hammer: Further changes
+
+- [Google Benchmark](https://github.com/google/benchmark) is now used for micro benchmarks (see `benchmarks` folder, #921).
+- The serialization (JSON and binary formats) now properly work with the libraries string template parameter, allowing for optimized string implementations to be used in constraint environments such as embedded software (#941, #950).
+- The exceptional behavior can now be overridden by defining macros `JSON_THROW_USER`, `JSON_TRY_USER`, and `JSON_CATCH_USER`, defining the behavior of `throw`, `try` and `catch`, respectively. This allows to switch off C++'s exception mechanism yet still execute user-defined code in case an error condition occurs (#938).
+- To facilitate the interplay with [flex](https://github.com/westes/flex) and [Bison](https://www.gnu.org/software/bison/), the library does not use the variable name `yytext` any more as it could clash with macro definitions (#933).
+- The library now defines `NLOHMANN_JSON_VERSION_MAJOR`, `NLOHMANN_JSON_VERSION_MINOR`, and `NLOHMANN_JSON_VERSION_PATCH` to allow for conditional compilation based on the included library version (#943, #948).
+- A compilation error with ICC has been fixed (#947).
+- Typos and links in the documentation have been fixed (#900, #930).
+- A compiler error related to incomplete types has been fixed (#919).
+- The tests form the [UTF-8 decoder stress test](http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt) have been added to the test suite.
+
+### :fire: Deprecated functions
+
+- Function [`iterator_wrapper`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) has been deprecated (#874). Since its introduction, the name was up for discussion, as it was too technical. We now introduced the member function [`items()`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) with the same semantics. `iterator_wrapper` will be removed in the next major version (i.e., 4.0.0).
+
+Furthermore, the following functions are deprecated since version 3.0.0 and will be removed in the next major version (i.e., 4.0.0):
+
+- [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3)
+- [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983)
+
+Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.0.1
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.0.1/json.hpp) (502 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.0.1/json.hpp.asc) (1 KB)
+
+Release date: 2017-12-29
+SHA-256: c9b3591f1bb94e723a0cd7be861733a3a555b234ef132be1e9027a0364118c4c
+
+### Summary
+
+This release fixes small issues in the implementation of **JSON Pointer** and **JSON Patch**. All changes are backward-compatible.
+
+### Changes
+
+- :bug: The **"copy" operation of JSON Patch** ([RFC 6902](https://tools.ietf.org/html/rfc6902)) requests that it is an error if the target path points into a non-existing array or object (see #894 for a detailed description). This release fixes the implementation to detect such invalid target paths and throw an exception.
+- :bug: An **array index in a JSON Pointer** ([RFC 6901](https://tools.ietf.org/html/rfc6901)) must be an integer. This release fixes the implementation to throw an exception in case invalid array indices such as `10e2` are used.
+- :white_check_mark: Added the [JSON Patch tests](https://github.com/json-patch/json-patch-tests) from Byron Ruth and Mike McCabe.
+- :memo: Fixed the documentation of the [`at(ptr)` function with JSON Pointers](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a8ab61397c10f18b305520da7073b2b45.html#a8ab61397c10f18b305520da7073b2b45) to list all possible exceptions (see #888).
+- :memo: Updated the [container overview documentation](https://nlohmann.github.io/json/) (see #883).
+- :wrench: The CMake files now respect the [`BUILD_TESTING`](https://cmake.org/cmake/help/latest/module/CTest.html?highlight=build_testing) option (see #846, #885)
+- :rotating_light: Fixed some compiler warnings (see #858, #882).
+
+### Deprecated functions
+
+:fire: To unify the interfaces and to improve similarity with the STL, the following functions are deprecated since version 3.0.0 and will be removed in the next major version (i.e., 4.0.0):
+
+- [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3)
+- [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983)
+
+Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+## v3.0.0
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v3.0.0/json.hpp) (501 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v3.0.0/json.hpp.asc) (1 KB)
+
+Release date: 2017-12-17
+SHA-256: 076d4a0cb890a3c3d389c68421a11c3d77c64bd788e85d50f1b77ed252f2a462
+
+### Summary
+
+<img src="https://user-images.githubusercontent.com/159488/34072418-8f5ba396-e287-11e7-9de7-8bc7482ac23c.png" align="right">
+
+After almost a year, here is finally a new release of JSON for Modern C++, and it is a major one! As we adhere to [semantic versioning](https://semver.org), this means the release includes some breaking changes, so please read the next section carefully before you update. But don't worry, we also added a few new features and put a lot of effort into fixing a lot of bugs and straighten out a few inconsistencies.
+
+### :boom: Breaking changes
+
+This section describes changes that change the public API of the library and may require changes in code using a previous version of the library. In section "Moving from 2.x.x to 3.0.0" at the end of the release notes, we describe in detail how existing code needs to be changed.
+
+- The library now uses [**user-defined exceptions**](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9a0aced019cb1d65bb49703406c84970.html#a9a0aced019cb1d65bb49703406c84970) instead of re-using those defined in `<stdexcept>` (#244). This not only allows to add more information to the exceptions (every exception now has an identifier, and parse errors contain the position of the error), but also to easily catch all library exceptions with a single `catch(json::exception)`.
+- When strings with a different encoding as UTF-8 were stored in JSON values, their serialization could not be parsed by the library itself, as only UTF-8 is supported. To enforce this library limitation and improve consistency, **non-UTF-8 encoded strings now yield a `json::type_error` exception during serialization** (#838). The check for valid UTF-8 is realized with code from [Björn Hoehrmann](http://bjoern.hoehrmann.de/).
+- **NaN and infinity values can now be stored inside the JSON value** without throwing an exception. They are, however, still serialized as `null` (#388).
+- The library's iterator tag was changed from RandomAccessIterator to **[BidirectionalIterator](http://en.cppreference.com/w/cpp/concept/BidirectionalIterator)** (#593). Supporting RandomAccessIterator was incorrect as it assumed an ordering of values in a JSON objects which are unordered by definition.
+- The library does not include the standard headers `<iostream>`, `<ctype>`, and `<stdexcept>` any more. You may need to add these headers to code relying on them.
+- Removed constructor `explicit basic_json(std::istream& i, const parser_callback_t cb = nullptr)` which was deprecated in version 2.0.0 (#480).
+
+### :fire: Deprecated functions
+
+To unify the interfaces and to improve similarity with the STL, the following functions are now deprecated and will be removed in the next major version (i.e., 4.0.0):
+
+- [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3)
+- [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983)
+
+Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.
+
+### :sparkles: New features
+
+With all this breaking and deprecation out of the way, let's talk about features!
+
+- We improved the **diagnostic information for syntax errors** (#301). Now, an exception [`json::parse_error`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1efc2468e6022be6e35fc2944cabe4d.html#af1efc2468e6022be6e35fc2944cabe4d) is thrown which contains a detailed message on the error, but also a member `byte` to indicate the byte offset in the input where the error occurred.
+- We added a **non-throwing syntax check** (#458): The new `accept` function returns a Boolean indicating whether the input is proper JSON. We also added a Boolean parameter `allow_exceptions` to the existing [`parse`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_aa9676414f2e36383c4b181fe856aa3c0.html#aa9676414f2e36383c4b181fe856aa3c0) functions to return a `discarded` value in case a syntax error occurs instead of throwing an exception.
+- An [`update`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a1cfa9ae5e7c2434cab4cfe69bffffe11.html#a1cfa9ae5e7c2434cab4cfe69bffffe11) function was added to **merge two JSON objects** (#428). In case you are wondering: the name was inspired by [Python](https://docs.python.org/2/library/stdtypes.html#dict.update).
+- The [`insert`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a1b0a4e60d56f1fe80501ed941e122892.html#a1b0a4e60d56f1fe80501ed941e122892) function now also supports an iterator range to add elements to an object.
+- The binary exchange formats **CBOR and MessagePack can now be parsed from input streams and written to output streams** (#477).
+- Input streams are now only read until the end of a JSON value instead of the end of the input (#367).
+- The serialization function [`dump`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a5adea76fedba9898d404fef8598aa663.html#a5adea76fedba9898d404fef8598aa663) now has two optional parameters `ensure_ascii` to **escape all non-ASCII characters** with `\uxxxx` and an `indent_char` parameter to choose whether to **indent with spaces or tabs** (#654). 
+- Added **built-in type support** for C arrays (#502), `std::pair` and `std::tuple` (#563, #614), `enum` and `enum class` (#545), `std::vector<bool>` (#494). Fixed support for `std::valarray` (#702), `std::array` (#553), and `std::map<std::string, std::string>` (#600, #607).
+
+### :hammer: Further changes
+
+Furthermore, there have been a lot of changes under the hood:
+
+- Replaced the [re2c](http://re2c.org) generated scanner by a self-coded version which allows for a better modularization of the parser and better diagnostics. To test the new scanner, we added millions (8,860,608 to be exact) of unit tests to check all valid and invalid byte sequences of the Unicode standard.
+- Google's OSS-Fuzz is still constantly fuzz-testing the library and found several issues that were fixed in this release (#497, #504, #514, #516, #518, #519, #575).
+- We now also ignore UTF-8 byte order marks when parsing from an iterator range (#602).
+- Values can be now moved from initializer lists (#663).
+- Updated to [Catch](https://github.com/catchorg/Catch2) 1.9.7. Unfortunately, Catch2 currently has some performance issues.
+- The non-exceptional paths of the library are now annotated with `__builtin_expect` to optimize branch prediction as long as no error occurs.
+- MSVC now produces a stack trace in MSVC if a `from_json` or `to_json` function was not found for a user-defined type. We also added a debug visualizer [`nlohmann_json.natvis`](https://github.com/nlohmann/json/blob/develop/nlohmann_json.natvis) for better debugging in MSVC (#844).
+- Overworked the documentation and added even more examples.
+- The build workflow now relies on CMake and CTest. Special flags can be chosen with CMake, including coverage (`JSON_Coverage`), compilation without exceptions (`JSON_NoExceptions`), LLVM sanitizers (`JSON_Sanitizer`), or execution with Valgrind (`JSON_Valgrind`).
+- Added support for package managers Meson (#576), Conan (#566), Hunter (#671, #829), and vcpkg (#753).
+- Added CI builders: Xcode 8.3, 9.0, 9.1, and 9.2; GCC 7.2; Clang 3.8, 3.9, 4.0, and 5.0; Visual Studio 2017. The library is further built with C++17 settings on the latest Clang, GCC, and MSVC version to quickly detect new issues.
+
+### Moving from 2.x.x to 3.0.0
+
+#### User-defined Exceptions
+
+There are five different exceptions inheriting from [`json::exception`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a9a0aced019cb1d65bb49703406c84970.html#a9a0aced019cb1d65bb49703406c84970):
+
+- [`json::parse_error`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af1efc2468e6022be6e35fc2944cabe4d.html#af1efc2468e6022be6e35fc2944cabe4d) for syntax errors (including the binary formats),
+- [`json::invalid_iterator`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_ac13d32f7cbd02d616e71d8dc30dadcbf.html#ac13d32f7cbd02d616e71d8dc30dadcbf) for errors related to iterators,
+- [`json::type_error`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a4010e8e268fefd86da773c10318f2902.html#a4010e8e268fefd86da773c10318f2902) for errors where functions were called with the wrong JSON type,
+- [`json::out_of_range`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a28f7c2f087274a0012eb7a2333ee1580.html#a28f7c2f087274a0012eb7a2333ee1580) for range errors, and
+- [`json::other_error`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a3333a5a8714912adda33a35b369f7b3d.html#a3333a5a8714912adda33a35b369f7b3d) for miscellaneous errors.
+
+To support these exception, the `try`/`catch` blocks of your code need to be adjusted:
+
+| new exception | previous exception |
+|:--|:--|
+| parse_error.101 | invalid_argument |
+| parse_error.102 | invalid_argument |
+| parse_error.103 | invalid_argument |
+| parse_error.104 | invalid_argument |
+| parse_error.105 | invalid_argument |
+| parse_error.106 | domain_error |
+| parse_error.107 | domain_error |
+| parse_error.108 | domain_error |
+| parse_error.109 | invalid_argument |
+| parse_error.110 | out_of_range |
+| parse_error.111 | invalid_argument |
+| parse_error.112 | invalid_argument |
+| invalid_iterator.201 | domain_error |
+| invalid_iterator.202 | domain_error |
+| invalid_iterator.203 | domain_error |
+| invalid_iterator.204 | out_of_range |
+| invalid_iterator.205 | out_of_range |
+| invalid_iterator.206 | domain_error |
+| invalid_iterator.207 | domain_error |
+| invalid_iterator.208 | domain_error |
+| invalid_iterator.209 | domain_error |
+| invalid_iterator.210 | domain_error |
+| invalid_iterator.211 | domain_error |
+| invalid_iterator.212 | domain_error |
+| invalid_iterator.213 | domain_error |
+| invalid_iterator.214 | out_of_range |
+| type_error.301 | domain_error |
+| type_error.302 | domain_error |
+| type_error.303 | domain_error |
+| type_error.304 | domain_error |
+| type_error.305 | domain_error |
+| type_error.306 | domain_error |
+| type_error.307 | domain_error |
+| type_error.308 | domain_error |
+| type_error.309 | domain_error |
+| type_error.310 | domain_error |
+| type_error.311 | domain_error |
+| type_error.313 | domain_error |
+| type_error.314 | domain_error |
+| type_error.315 | domain_error |
+| out_of_range.401 | out_of_range |
+| out_of_range.402 | out_of_range |
+| out_of_range.403 | out_of_range |
+| out_of_range.404 | out_of_range |
+| out_of_range.405 | domain_error |
+| other_error.501 | domain_error |
+
+#### Handling of NaN and INF
+
+- If an overflow occurs during parsing a number from a JSON text, an exception [`json::out_of_range`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a28f7c2f087274a0012eb7a2333ee1580.html#a28f7c2f087274a0012eb7a2333ee1580) is thrown so that the overflow is detected early and roundtripping is guaranteed.
+
+- NaN and INF floating-point values can be stored in a JSON value and are not replaced by null. That is, the basic_json class behaves like `double` in this regard (no exception occurs). However, NaN and INF are serialized to `null`.
+
+#### Removal of deprecated functions
+
+Function `explicit basic_json(std::istream& i, const parser_callback_t cb = nullptr)` should be replaced by the `parse` function: Let `ss` be a stream and `cb` be a parse callback function.
+
+Old code:
+
+```cpp
+json j(ss, cb);
+```
+
+New code:
+
+```cpp
+json j = json::parse(ss, cb);
+```
+
+If no callback function is used, also the following code works:
+
+```cpp
+json j;
+j << ss;
+```
+
+or
+
+```cpp
+json j;
+ss >> j;
+```
+
+## v2.1.1
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.1.1/json.hpp) (437 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.1.1/json.hpp.asc) (1 KB)
+
+Release date: 2017-02-25
+SHA-256: faa2321beb1aa7416d035e7417fcfa59692ac3d8c202728f9bcc302e2d558f57
+
+### Summary
+
+This release **fixes a locale-related bug in the parser**. To do so, the whole number handling (lexer, parser, and also the serialization) have been overworked. Furthermore, a lot of small changes added up that were added to this release. All changes are backward-compatible.
+
+### Changes
+- :bug: Locales that have a different character than `.` as decimal separator (e.g., the Norwegian locale `nb_NO.UTF-8`) led to truncated number parsing or parse errors. The library now has been fixed to work with **any locale**. Note that `.` is still the only valid decimal separator for JSON input.
+- :bug: Numbers like `1.0` were correctly parsed as floating-point number, but serialized as integer (`1`). Now, **floating-point numbers correctly round trip**.
+- :bug: Parsing incorrect JSON numbers with leading 0 (`0123`) could yield a [buffer overflow](https://github.com/nlohmann/json/issues/452). This is fixed now by detecting such errors directly by the lexer.
+- :bug: Constructing a JSON value from a pointer was incorrectly interpreted as a Boolean; such code will now yield a compiler error.
+- :bug: Comparing a JSON number with `0` led to a comparison with `null`. This is fixed now.
+- :bug: All throw calls are now wrapped in macros.
+- :lock: Starting during the preparation of this release (since 8 February 2017), commits and released files are **cryptographically signed** with [this GPG key](https://keybase.io/nlohmann/pgp_keys.asc?fingerprint=797167ae41c0a6d9232e48457f3cea63ae251b69). Previous releases have also been signed.
+- :sparkles: The parser for MessagePack and CBOR now supports an optional start index parameter to define a byte offset for the parser.
+- :rotating_light: Some more warnings have been fixed. With Clang, the code compiles **without warnings** with `-Weverything` (well, it needs `-Wno-documentation-unknown-command` and `-Wno-deprecated-declarations`, but you get the point).
+- :hammer: The code can be compiled easier with many Android NDKs by avoiding macros like `UINT8_MAX` which previously required defining a preprocessor macro for compilation.
+- :zap: The unit tests now compile two times faster.
+- :heavy_plus_sign: [Cotire](https://github.com/sakra/cotire) is used to speed up the build.
+- :pencil2: Fixed a lot of typos in the documentation.
+- :memo: Added a section to the README file that lists all used [third-party code/tools](https://github.com/nlohmann/json#used-third-party-tools).
+- :memo: Added a note on constructing a string value vs. parsing.
+- :white_check_mark: The test suite now contains 11202597 unit tests.
+- :memo: Improved the [Doxygen documentation](https://nlohmann.github.io/json/) by shortening the template parameters of class `basic_json`.
+- :construction_worker: Removed Doozer.
+- :construction_worker: Added Codacity.
+- :arrow_up: Upgraded Catch to version 1.7.2.
+
+
+## v2.1.0
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.1.0/json.hpp) (426 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.1.0/json.hpp.asc) (1 KB)
+
+- Release date: 2017-01-28
+- SHA-256: a571dee92515b685784fd527e38405cf3f5e13e96edbfe3f03d6df2e363a767b
+
+### Summary
+
+This release introduces a means to convert from/to user-defined types. The release is backwards compatible.
+
+![conversion](https://cloud.githubusercontent.com/assets/159488/22399173/aebe8f7a-e597-11e6-930f-7494ee615827.png)
+
+### Changes
+- :sparkles: The library now offers an elegant way to **convert from and to arbitrary value types**. All you need to do is to implement two functions: `to_json` and `from_json`. Then, a conversion is as simple as putting a `=` between variables. See the [README](https://github.com/nlohmann/json#arbitrary-types-conversions) for more information and examples.
+- :sparkles: **Exceptions can now be switched off.** This can be done by defining the preprocessor symbol `JSON_NOEXCEPTION` or by passing `-fno-exceptions` to your compiler. In case the code would usually thrown an exception, `abort()` is now called.
+- :sparkles: **Information on the library** can be queried with the new (static) function `meta()` which returns a JSON object with information on the version, compiler, and platform. See the [documentation]() for an example.
+- :bug: A bug in the CBOR parser was fixed which led to a buffer overflow.
+- :sparkles: The function [`type_name()`]() is now public. It allows to query the type of a JSON value as string.
+- :white_check_mark: Added the [Big List of Naughty Strings](https://github.com/minimaxir/big-list-of-naughty-strings) as test case.
+- :arrow_up: Updated to [Catch v1.6.0](https://github.com/philsquared/Catch/releases/tag/v1.6.0).
+- :memo: Some typos in the documentation have been fixed.
+
+
+## v2.0.10
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.10/json.hpp) (409 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.10/json.hpp.asc) (1 KB)
+
+- Release date: 2017-01-02
+- SHA-256: ec27d4e74e9ce0f78066389a70724afd07f10761009322dc020656704ad5296d
+
+### Summary
+
+This release fixes several security-relevant bugs in the MessagePack and CBOR parsers. The fixes are backwards compatible.
+
+### Changes
+- :bug: Fixed a lot of **bugs in the CBOR and MesssagePack parsers**. These bugs occurred if invalid input was parsed and then could lead in buffer overflows. These bugs were found with Google's [OSS-Fuzz](https://github.com/google/oss-fuzz), see #405, #407, #408, #409, #411, and #412 for more information.
+- :construction_worker: We now also use the **[Doozer](https://doozer.io) continuous integration platform**.
+- :construction_worker: The complete test suite is now also run with **Clang's address sanitizer and undefined-behavior sanitizer**.
+- :white_check_mark: Overworked **fuzz testing**; CBOR and MessagePack implementations are now fuzz-tested. Furthermore, all fuzz tests now include a round trip which ensures created output can again be properly parsed and yields the same JSON value.
+- :memo: Clarified documentation of `find()` function to always return `end()` when called on non-object value types.
+- :hammer: Moved thirdparty test code to `test/thirdparty` directory.
+
+## v2.0.9
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.9/json.hpp) (406 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.9/json.hpp.asc) (1 KB)
+
+- Release date: 2016-12-16
+- SHA-256: fbf3396f13e187d6c214c297bddc742d918ea9b55e10bfb3d9f458b9bfdc22e5
+
+### Summary
+
+This release implements with **[CBOR](http://cbor.io)** and **[MessagePack](http://msgpack.org)** two **binary serialization/deserialization formats**. It further contains some small fixes and improvements. The fixes are backwards compatible.
+
+![cbor](https://cloud.githubusercontent.com/assets/159488/22399181/d4d60d32-e597-11e6-8dcb-825abcf9ac2a.png)
+
+### Changes
+- :sparkles: The library can now read and write the binary formats **[CBOR](http://cbor.io)** (Concise Binary Object Representation) and **[MessagePack](http://msgpack.org)**. Both formats are aimed to produce a very compact representation of JSON which can be parsed very efficiently. See the  [README file](https://github.com/nlohmann/json#binary-formats-cbor-and-messagepack) for more information and examples.
+- :fire: simplified the iteration implementation allowing to remove dozens of lines of code
+- :bug: fixed an [integer overflow error](https://github.com/nlohmann/json/issues/389) detected by [Google's OSS-Fuzz](https://github.com/google/oss-fuzz)
+- :bug: suppressed documentation warnings inside the library to facilitate compilation with `-Wdocumentation`
+- :bug: fixed an overflow detection error in the number parser
+- :memo: updated [contribution guidelines](https://github.com/nlohmann/json/blob/develop/.github/CONTRIBUTING.md) to a list of frequentely asked features that will most likely be never added to the library
+- :memo:  added a **table of contents** to the [README file](https://github.com/nlohmann/json/blob/develop/README.md) to add some structure
+- :memo: mentioned the many [examples](https://github.com/nlohmann/json/tree/develop/doc/examples) and the [documentation](https://nlohmann.github.io/json/) in the [README file]()
+- :hammer: split [unit tests](https://github.com/nlohmann/json/tree/develop/test/src) into individual independent binaries to speed up compilation and testing
+- :white_check_mark: the test suite now contains **11201886** tests
+
+## v2.0.8
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.8/json.hpp) (360 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.8/json.hpp.asc) (1 KB)
+
+- Release date: 2016-12-02
+- SHA-256: b70db0ad34f8e0e61dc3f0cbab88099336c9674c193d8a3439d93d6aca2d7120
+
+### Summary
+
+This release combines a lot of small fixes and improvements. The fixes are backwards compatible.
+
+### Changes
+- :bug: fixed a bug that froze the parser if a passed file was not found (now, `std::invalid_argument` is thrown)
+- :bug: fixed a bug that lead to an error of a file at EOF was parsed again (now, `std::invalid_argument` is thrown)
+- :sparkles: the well known functions [`emplace`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_a602f275f0359ab181221384989810604.html#a602f275f0359ab181221384989810604) and [`emplace_back`](http://nlohmann.github.io/json/doxygen/classnlohmann_1_1basic__json_af8a435033327d9237da414afc1cce513.html#af8a435033327d9237da414afc1cce513) have been added to JSON values and work as expected
+- :zap: improved the performance of the serialization (`dump` function)
+- :zap: improved the performance of the deserialization (parser)
+- :construction_worker: some continuous integration images at [Travis](https://travis-ci.org/nlohmann/json) were added and retired; see [here](https://github.com/nlohmann/json#supported-compilers) for the current continuous integration setup
+- :construction_worker: the [Coverity scan](https://scan.coverity.com/projects/nlohmann-json) works again
+- :chart_with_upwards_trend: the benchmarking code has been improved to produce more stable results
+- :memo: the [README](https://github.com/nlohmann/json/blob/develop/README.md) file has been extended and includes more frequently asked examples
+- :white_check_mark: the test suite now contains 8905518 tests
+- :arrow_up: updated [Catch](https://github.com/philsquared/Catch) to version 1.5.8
+
+## v2.0.7
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.7/json.hpp) (355 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.7/json.hpp.asc) (1 KB)
+
+- Release date: 2016-11-02
+- SHA-256: 5545c323670f8165bae90b9dc6078825e86ec310d96cc4e5b47233ea43715bbf
+
+### Summary
+
+This release fixes a few bugs in the JSON parser found in the [Parsing JSON is a Minefield 💣](http://seriot.ch/parsing_json.html) article. The fixes are backwards compatible.
+
+### Changes
+- The article [Parsing JSON is a Minefield 💣](http://seriot.ch/parsing_json.html) discusses a lot of pitfalls of the JSON specification. When investigating the published test cases, a few bugs in the library were found and fixed:
+  - Files with less than 5 bytes can now be parsed without error.
+  - The library now properly rejects any file encoding other than UTF-8. Furthermore, incorrect surrogate pairs are properly detected and rejected.
+  - The library now accepts all but one "yes" test (y_string_utf16.json): UTF-16 is not supported.
+  - The library rejects all but one "no" test (n_number_then_00.json): Null bytes are treated as end of file instead of an error. This allows to parse input from null-terminated strings.
+- The string length passed to a user-defined string literal is now exploited to choose a more efficient constructor.
+- A few grammar mistakes in the README file have been fixed.
+
+## v2.0.6
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.6/json.hpp) (349 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.6/json.hpp.asc) (1 KB)
+
+- Release date: 2016-10-15
+- SHA256: 459cc93d5e2f503e50c6d5876eb86bfea7daf405f5a567c5a2c9abc2383756ae
+
+### Summary
+
+This release fixes the semantics of `operator[]` for JSON Pointers (see below). This fix is backwards compatible.
+
+### Changes
+- **`operator[]` for JSON Pointers** now behaves like the other versions of `operator[]` and transforms `null` values into objects or arrays if required. This allows to created nested structures like `j["/foo/bar/2"] = 17` (yielding `{"foo": "bar": [null, null, 17]}`) without problems.
+- overworked a helper SFINAE function
+- fixed some documentation issues
+- fixed the CMake files to allow to run the test suite outside the main project directory
+- restored test coverage to 100%.
+
+## v2.0.5
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.5/json.hpp) (347 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.5/json.hpp.asc) (1 KB)
+
+- Release date: 2016-09-14
+- SHA-256: 8b7565263a44e2b7d3b89808bc73d2d639037ff0c1f379e3d56dbd77e00b98d9
+
+### Summary
+
+This release fixes a regression bug in the stream parser (function `parse()` and the `<<`/`>>` operators). This fix is backwards compatible.
+
+### Changes
+- **Bug fix**: The end of a file stream was not detected properly which led to parse errors. This bug should have been fixed with 2.0.4, but there was still a flaw in the code.
+
+## v2.0.4
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.4/json.hpp) (347 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.4/json.hpp.asc) (1 KB)
+
+- Release date: 2016-09-11
+- SHA-256: 632ceec4c25c4e2153f71470d3a2b992c8355f6d8b4d627d05dd16095cd3aeda
+
+### Summary
+
+This release fixes a bug in the stream parser (function `parse()` and the `<<`/`>>` operators). This fix is backwards compatible.
+
+### Changes
+- **Bug fix**: The end of a file stream was not detected properly which led to parse errors.
+- Fixed a compiler warning about an unused variable.
+
+## v2.0.3
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.3/json.hpp) (347 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.3/json.hpp.asc) (1 KB)
+
+- Release date: 2016-08-31
+- SHA-256: 535b73efe5546fde9e763c14aeadfc7b58183c0b3cd43c29741025aba6cf6bd3
+
+### Summary
+
+This release combines a lot of small fixes and improvements. The release is backwards compatible.
+
+### Changes
+- The **parser/deserialization functions have been generalized** to process any contiguous sequence of 1-byte elements (e.g., `char`, `unsigned char`, `uint8_t`). This includes all kind of string representations (string literals, char arrays, `std::string`, `const char*`), contiguous containers (C-style arrays, `std::vector`, `std::array`, `std::valarray`, `std::initializer_list`). User-defined containers providing random-access iterator access via `std::begin` and `std::end` can be used as well. See the documentation ([1](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_ace63ac4eb1dd7251a259d32e397461a3.html#ace63ac4eb1dd7251a259d32e397461a3), [2](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a90f05d55d9d0702c075cd281fd0d85ae.html#a90f05d55d9d0702c075cd281fd0d85ae), [3](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_aeffd70f622f8f2a51fd3d95af64b63a7.html#aeffd70f622f8f2a51fd3d95af64b63a7), [4](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_aa8dca2e91a6301c36890f844e64f0023.html#aa8dca2e91a6301c36890f844e64f0023)) for more information. Note that contiguous storage cannot be checked at compile time; if any of the parse functions are called with a noncompliant container, the behavior is undefined and will most likely yield segmentation violation. The preconditions are enforced by an assertion unless the library is compiled with preprocessor symbol `NDEBUG`.
+- As a general remark on **assertions**: The library uses assertions to preclude undefined behavior. A [prominent example](https://github.com/nlohmann/json/issues/289) for this is the `operator[]` for const JSON objects. The behavior of this const version of the operator is undefined if the given key does not exist in the JSON object, because unlike the non-const version, it cannot add a `null` value at the given key. Assertions can be switched of by defining the preprocessor symbol `NDEBUG`. See the [documentation of `assert`](http://en.cppreference.com/w/cpp/error/assert) for more information.
+- In the course of cleaning up the parser/deserialization functions, the constructor [`basic_json(std::istream&, const parser_callback_t)`](https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a32350263eb105764844c5a85e156a255.html#a32350263eb105764844c5a85e156a255) has been **deprecated** and will be deleted with the next major release 3.0.0 to unify the interface of the library. Deserialization will be done by stream operators or by calling one of the `parse` functions. That is, calls like `json j(i);` for an input stream `i` need to be replaced by `json j = json::parse(i);`. Compilers will produce a deprecation warning if client code uses this function.
+- Minor improvements:
+  - Improved the performance of the serialization by avoiding the re-creation of a locale object.
+  - Fixed two MSVC warnings. Compiling the test suite with `/Wall` now only warns about non-inlined functions (C4710) and the deprecation of the constructor from input-stream (C4996).
+- Some project internals:
+  - <img align="right" src="https://bestpractices.coreinfrastructure.org/assets/questions_page_badge-17b338c0e8528d695d8676e23f39f17ca2b89bb88176370803ee69aeebcb5be4.png"> The project has qualified for the [Core Infrastructure Initiative Best Practices Badge](https://bestpractices.coreinfrastructure.org/projects/289). While most requirements where already satisfied, some led to a more explicit documentation of quality-ensuring procedures. For instance, static analysis is now executed with every commit on the build server. Furthermore, the [contribution guidelines document](https://github.com/nlohmann/json/blob/develop/.github/CONTRIBUTING.md) how to communicate security issues privately.
+  - The test suite has been overworked and split into several files to allow for faster compilation and analysis. The execute the test suite, simply execute `make check`.
+  - The continuous integration with [Travis](https://travis-ci.org/nlohmann/json) was extended with Clang versions 3.6.0 to 3.8.1 and now includes 18 different compiler/OS combinations.
+  - An 11-day run of [American fuzzy lop](http://lcamtuf.coredump.cx/afl/) checked 962 million inputs on the parser and found no issue.
+
+## v2.0.2
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.2/json.hpp) (338 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.2/json.hpp.asc) (1 KB)
+
+- Release date: 2016-07-31
+- SHA-256: 8e97b7965b4594b00998d6704465412360e1a0ed927badb51ded8b82291a8f3d
+
+### Summary
+
+This release combines a lot of small fixes and improvements. The release is backwards compatible.
+
+### Changes
+- The **parser** has been overworked, and a lot of small issues have been fixed:
+  - Improved parser performance by avoiding recursion and using move semantics for the return value.
+  - Unescaped control characters `\x10`-`\x1f` are not accepted any more.
+  - Fixed a bug in the parser when reading from an input stream.
+  - Improved test case coverage for UTF-8 parsing: now, all valid Unicode code points are tested both escaped and unescaped.
+  - The precision of output streams is now preserved by the parser.
+- Started to check the **code correctness** by proving termination of important loops. Furthermore, individual assertions have been replaced by a more systematic function which checks the class invariants. Note that assertions should be switched off in production by defining the preprocessor macro `NDEBUG`, see the [documentation of `assert`](http://en.cppreference.com/w/cpp/error/assert).
+- A lot of **code cleanup**: removed unused headers, fixed some compiler warnings, and fixed a build error for Windows-based Clang builds.
+- Added some compile-time checks:
+  - Unsupported compilers are rejected during compilation with an `#error` command.
+  - Static assertion prohibits code with incompatible pointer types used in `get_ptr()`.
+- Improved the [documentation](https://nlohmann.github.io/json/), and adjusted the documentation script to choose the correct version of `sed`.
+- Replaced a lot of "raw loops" by STL functions like `std::all_of`, `std::for_each`, or `std::accumulate`. This facilitates reasoning about termination of loops and sometimes allowed to simplify functions to a single return statement.
+- Implemented a `value()` function for JSON pointers (similar to `at` function).
+- The Homebrew formula (see [Integration](https://github.com/nlohmann/json#integration)) is now tested for all Xcode builds (6.1 - 8.x) with Travis.
+- Avoided output to `std::cout` in the test cases.
+
+## v2.0.1
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.1/json.hpp) (321 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.1/json.hpp.asc) (1 KB)
+
+- Release date: 2016-06-28
+- SHA-256: ef550fcd7df572555bf068e9ec4e9d3b9e4cdd441cecb0dcea9ea7fd313f72dd
+
+### Summary
+
+This release fixes a performance regression in the JSON serialization (function `dump()`). This fix is backwards compatible.
+
+### Changes
+- The locale of the output stream (or the internal string stream if a JSON value is serialized to a string) is now adjusted once for the whole serialization instead of for each floating-point number.
+- The locale of an output stream is now correctly reset to the previous value by the JSON library.
+
+
+## v2.0.0
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v2.0.0/json.hpp) (321 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v2.0.0/json.hpp.asc) (1 KB)
+
+- Release date: 2016-06-24
+- SHA-256: ac9e1fb25c2ac9ca5fc501fcd2fe3281fe04f07018a1b48820e7b1b11491bb6c
+
+### Summary
+
+This release adds several features such as JSON Pointers, JSON Patch, or support for 64 bit unsigned integers. Furthermore, several (subtle) bugs have been fixed.
+
+As `noexcept` and `constexpr` specifier have been added to several functions, the public API has effectively been changed in a (potential) non-backwards compatible manner. As we adhere to [Semantic Versioning](http://semver.org), this calls for a new major version, so say hello to 2️⃣.0️⃣.0️⃣.
+
+### Changes
+- 🔟 A JSON value now uses `uint64_t` (default value for template parameter `NumberUnsignedType`) as data type for **unsigned integer** values. This type is used automatically when an unsigned number is parsed. Furthermore, constructors, conversion operators and an `is_number_unsigned()` test have been added.
+-  👉 **JSON Pointer** ([RFC 6901](https://tools.ietf.org/html/rfc6901)) support: A JSON Pointer is a string (similar to an XPath expression) to address a value inside a structured JSON value. JSON Pointers can be used in `at()` and `operator[]` functions. Furthermore, JSON values can be “flattened” to key/value pairs using `flatten()` where each key is a JSON Pointer. The original value can be restored by “unflattening” the flattened value using `unflatten()`.
+- 🏥 **JSON Patch** ([RFC 6902](https://tools.ietf.org/html/rfc6902)) support. A JSON Patch is a JSON value that describes the required edit operations (add, change, remove, …) to transform a JSON value into another one. A JSON Patch can be created with function `diff(const basic_json&)` and applied with `patch(const basic_json&)`. Note the created patches use a rather primitive algorithm so far and leave room for improvement.
+- 🇪🇺 The code is now **locale-independent**: Floating-point numbers are always serialized with a period (`.`) as decimal separator and ignores different settings from the locale.
+- 🍺 **Homebrew** support: Install the library with `brew tap nlohmann/json && brew install nlohmann_json`.
+- Added constructor to create a JSON value by parsing a `std::istream` (e.g., `std::stringstream` or `std::ifstream`).
+- Added **`noexcept`** specifier to `basic_json(boolean_t)`, `basic_json(const number_integer_t)`, `basic_json(const int)`, `basic_json(const number_float_t)`, iterator functions (`begin()`, `end()`, etc.)
+- When parsing numbers, the sign of `0.0` (vs. `-0.0`) is preserved.
+- Improved MSVC 2015, Android, and MinGW support. See [README](https://github.com/nlohmann/json#supported-compilers) for more information.
+- Improved test coverage (added 2,225,386 tests).
+- Removed some misuses of `std::move`.
+- Fixed several compiler warnings.
+- Improved error messages from JSON parser.
+- Updated to [`re2c`](http://re2c.org) to version 0.16 to use a minimal DFAs for the lexer.
+- Updated test suite to use [Catch](https://github.com/philsquared/Catch) version 1.5.6.
+- Made type getters (`is_number`, etc.) and const value access `constexpr`.
+- Functions `push_back` and `operator+=` now work with key/value pairs passed as initializer list, e.g. `j_object += {"key", 1}`.
+- Overworked `CMakeLists.txt` to make it easier to integrate the library into other projects.
+
+### Notes
+- Parser error messages are still very vague and contain no information on the error location.
+- The implemented `diff` function is rather primitive and does not create minimal diffs.
+- The name of function `iteration_wrapper` may change in the future and the function will be deprecated in the next release.
+- Roundtripping (i.e., parsing a JSON value from a string, serializing it, and comparing the strings) of floating-point numbers is not 100% accurate. Note that [RFC 8259](https://tools.ietf.org/html/rfc8259) defines no format to internally represent numbers and states not requirement for roundtripping. Nevertheless, benchmarks like [Native JSON Benchmark](https://github.com/miloyip/nativejson-benchmark) treat roundtripping deviations as conformance errors.
+
+
+## v1.1.0
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v1.1.0/json.hpp) (257 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v1.1.0/json.hpp.asc) (1 KB)
+
+- Release date: 2016-01-24
+- SHA-256: c0cf0e3017798ca6bb18e757ebc570d21a3bdac877845e2b9e9573d183ed2f05
+
+### Summary
+
+This release fixes several small bugs and adds functionality in a backwards-compatible manner. Compared to the [last version (1.0.0)](https://github.com/nlohmann/json/releases/tag/v1.0.0), the following changes have been made:
+
+### Changes
+- _Fixed_: **Floating-point numbers** are now serialized and deserialized properly such that rountripping works in more cases. [#185, #186, #190, #191, #194]
+- _Added_: The code now contains **assertions** to detect undefined behavior during development. As the standard function `assert` is used, the assertions can be switched off by defining the preprocessor symbol `NDEBUG` during compilation. [#168]
+- _Added_: It is now possible to get a **reference** to the stored values via the newly added function `get_ref()`. [#128, #184]
+- _Fixed_: Access to object values via keys (**`operator[]`**) now works with all kind of string representations. [#171, #189]
+- _Fixed_: The code now compiles again with **Microsoft Visual Studio 2015**. [#144, #167, #188]
+- _Fixed_: All required headers are now included.
+- _Fixed_: Typos and other small issues. [#162, #166,  #175, #177, #179, #180]
+
+### Notes
+
+There are still known open issues (#178, #187) which will be fixed in version 2.0.0. However, these fixes will require a small API change and will not be entirely backwards-compatible.
+
+
+## v1.0.0
+
+!!! summary "Files"
+
+    - [json.hpp](https://github.com/nlohmann/json/releases/download/v1.0.0/json.hpp) (243 KB)
+    - [json.hpp.asc](https://github.com/nlohmann/json/releases/download/v1.0.0/json.hpp.asc) (1 KB)
+
+- Release date: 2015-12-28
+- SHA-256: 767dc2fab1819d7b9e19b6e456d61e38d21ef7182606ecf01516e3f5230446de
+
+### Summary
+
+This is the first official release. Compared to the [prerelease version 1.0.0-rc1](https://github.com/nlohmann/json/releases/tag/v1.0.0-rc1), only a few minor improvements have been made:
+
+### Changes
+- _Changed_: A **UTF-8 byte order mark** is silently ignored.
+- _Changed_: `sprintf` is no longer used.
+- _Changed_: `iterator_wrapper` also works for const objects; note: the name may change!
+- _Changed_: **Error messages** during deserialization have been improved.
+- _Added_: The `parse` function now also works with type `std::istream&&`.
+- _Added_: Function `value(key, default_value)` returns either a copy of an object's element at the specified key or a given default value if no element with the key exists.
+- _Added_: Public functions are tagged with the version they were introduced. This shall allow for better **versioning** in the future.
+- _Added_: All public functions and types are **documented** (see http://nlohmann.github.io/json/doxygen/) including executable examples.
+- _Added_: Allocation of all types (in particular arrays, strings, and objects) is now exception-safe.
+- _Added_: They descriptions of thrown exceptions have been overworked and are part of the tests suite and documentation.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/sponsors.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/sponsors.md
new file mode 100644
index 00000000..7e3ef028
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/home/sponsors.md
@@ -0,0 +1,19 @@
+# Sponsors
+
+You can sponsor this library at [GitHub Sponsors](https://github.com/sponsors/nlohmann).
+
+## Priority Sponsor
+
+- [Martti Laine](https://github.com/codeclown)
+- [Paul Harrington](https://github.com/phrrngtn)
+
+## Named Sponsors
+
+- [Michael Hartmann](https://github.com/reFX-Mike)
+- [Stefan Hagen](https://github.com/sthagen)
+- [Steve Sperandeo](https://github.com/homer6)
+- [Robert Jefe Lindstädt](https://github.com/eljefedelrodeodeljefe)
+- [Steve Wagner](https://github.com/ciroque)
+- [Lion Yang](https://github.com/LionNatsu)
+
+Thanks everyone!
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/images/callback_events.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/images/callback_events.png
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diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/index.md
new file mode 100644
index 00000000..0e49c836
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/index.md
@@ -0,0 +1,3 @@
+# JSON for Modern C++
+
+![](images/json.gif)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/bazel/WORKSPACE b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/bazel/WORKSPACE
new file mode 100644
index 00000000..57ef2e10
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/bazel/WORKSPACE
@@ -0,0 +1,7 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "nlohmann_json",
+    urls = ["https://github.com/nlohmann/json/archive/refs/tags/v3.11.3.tar.gz"],
+    strip_prefix = "json-3.11.3",
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/bazel/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/bazel/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/bazel/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cget/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cget/CMakeLists.txt
new file mode 100644
index 00000000..e3fda5b9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cget/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(json_example)
+
+find_package(nlohmann_json REQUIRED)
+
+add_executable(json_example example.cpp)
+target_link_libraries(json_example PRIVATE nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cget/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cget/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cget/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cmake.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cmake.md
new file mode 100644
index 00000000..df020319
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cmake.md
@@ -0,0 +1,173 @@
+# CMake
+
+## Integration
+
+You can use the `nlohmann_json::nlohmann_json` interface target in CMake. This target populates the appropriate usage
+requirements for [`INTERFACE_INCLUDE_DIRECTORIES`](https://cmake.org/cmake/help/latest/prop_tgt/INTERFACE_INCLUDE_DIRECTORIES.html)
+to point to the appropriate include directories and [`INTERFACE_COMPILE_FEATURES`](https://cmake.org/cmake/help/latest/prop_tgt/INTERFACE_COMPILE_FEATURES.html)
+for the necessary C++11 flags.
+
+### External
+
+To use this library from a CMake project, you can locate it directly with [`find_package()`](https://cmake.org/cmake/help/latest/command/find_package.html)
+and use the namespaced imported target from the generated package configuration:
+
+!!! example
+
+    ```cmake title="CMakeLists.txt"
+    cmake_minimum_required(VERSION 3.1)
+    project(ExampleProject LANGUAGES CXX)
+    
+    find_package(nlohmann_json 3.11.3 REQUIRED)
+    
+    add_executable(example example.cpp)
+    target_link_libraries(example PRIVATE nlohmann_json::nlohmann_json)
+    ```
+
+The package configuration file, `nlohmann_jsonConfig.cmake`, can be used either from an install tree or directly out of
+the build tree.
+
+### Embedded
+
+To embed the library directly into an existing CMake project, place the entire source tree in a subdirectory and call
+`add_subdirectory()` in your `CMakeLists.txt` file.
+
+!!! example
+
+    ```cmake title="CMakeLists.txt"
+    cmake_minimum_required(VERSION 3.1)
+    project(ExampleProject LANGUAGES CXX)
+
+    # If you only include this third party in PRIVATE source files, you do not need to install it
+    # when your main project gets installed.
+    set(JSON_Install OFF CACHE INTERNAL "")
+    
+    add_subdirectory(nlohmann_json)
+
+    add_executable(example example.cpp)
+    target_link_libraries(example PRIVATE nlohmann_json::nlohmann_json)
+    ```
+
+!!! note
+
+    Do not use `#!cmake include(nlohmann_json/CMakeLists.txt)`, since that carries with it unintended consequences that
+    will break the build. It is generally discouraged (although not necessarily well documented as such) to use
+    `#!cmake include(...)` for pulling in other CMake projects anyways.
+
+
+### Supporting Both
+
+To allow your project to support either an externally supplied or an embedded JSON library, you can use a pattern akin
+to the following.
+
+!!! example
+
+    ```cmake title="CMakeLists.txt"
+    project(ExampleProject LANGUAGES CXX)
+
+    option(EXAMPLE_USE_EXTERNAL_JSON "Use an external JSON library" OFF)
+
+    add_subdirectory(thirdparty)
+
+    add_executable(example example.cpp)
+
+    # Note that the namespaced target will always be available regardless of the import method
+    target_link_libraries(example PRIVATE nlohmann_json::nlohmann_json)
+    ```
+    
+    ```cmake title="thirdparty/CMakeLists.txt"
+    if(EXAMPLE_USE_EXTERNAL_JSON)
+        find_package(nlohmann_json 3.11.3 REQUIRED)
+    else()
+        set(JSON_BuildTests OFF CACHE INTERNAL "")
+        add_subdirectory(nlohmann_json)
+    endif()
+    ```
+    
+    `thirdparty/nlohmann_json` is then a complete copy of this source tree.
+
+
+### FetchContent
+
+Since CMake v3.11, [FetchContent](https://cmake.org/cmake/help/v3.11/module/FetchContent.html) can be used to
+automatically download a release as a dependency at configure type.
+
+!!! example
+
+    ```cmake title="CMakeLists.txt"
+    cmake_minimum_required(VERSION 3.11)
+    project(ExampleProject LANGUAGES CXX)
+
+    include(FetchContent)
+    
+    FetchContent_Declare(json URL https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz)
+    FetchContent_MakeAvailable(json)
+    
+    add_executable(example example.cpp)
+    target_link_libraries(example PRIVATE nlohmann_json::nlohmann_json)
+    ```
+
+!!! Note
+
+    It is recommended to use the URL approach described above which is supported as of version 3.10.0. It is also
+    possible to pass the Git repository like
+
+    ```cmake
+    FetchContent_Declare(json
+        GIT_REPOSITORY https://github.com/nlohmann/json
+        GIT_TAG v3.11.3
+    )
+    ```
+
+    However, the repository <https://github.com/nlohmann/json> download size is quite large.
+
+## CMake Options
+
+### `JSON_BuildTests`
+
+Build the unit tests when [`BUILD_TESTING`](https://cmake.org/cmake/help/latest/command/enable_testing.html) is enabled. This option is `ON` by default if the library's CMake project is the top project. That is, when integrating the library as described above, the test suite is not built unless explicitly switched on with this option.
+
+### `JSON_CI`
+
+Enable CI build targets. The exact targets are used during the several CI steps and are subject to change without notice. This option is `OFF` by default.
+
+### `JSON_Diagnostics`
+
+Enable [extended diagnostic messages](../home/exceptions.md#extended-diagnostic-messages) by defining macro [`JSON_DIAGNOSTICS`](../api/macros/json_diagnostics.md). This option is `OFF` by default.
+
+### `JSON_Diagnostic_Positions`
+Enable position diagnostics by defining macro [`JSON_DIAGNOSTIC_POSITIONS`](../api/macros/json_diagnostic_positions.md). This option is off by default.
+
+### `JSON_DisableEnumSerialization`
+
+Disable default `enum` serialization by defining the macro
+[`JSON_DISABLE_ENUM_SERIALIZATION`](../api/macros/json_disable_enum_serialization.md). This option is `OFF` by default.
+
+### `JSON_FastTests`
+
+Skip expensive/slow test suites. This option is `OFF` by default. Depends on `JSON_BuildTests`.
+
+### `JSON_GlobalUDLs`
+
+Place user-defined string literals in the global namespace by defining the macro
+[`JSON_USE_GLOBAL_UDLS`](../api/macros/json_use_global_udls.md). This option is `OFF` by default.
+
+### `JSON_ImplicitConversions`
+
+Enable implicit conversions by defining macro [`JSON_USE_IMPLICIT_CONVERSIONS`](../api/macros/json_use_implicit_conversions.md). This option is `ON` by default.
+
+### `JSON_Install`
+
+Install CMake targets during install step. This option is `ON` by default if the library's CMake project is the top project.
+
+### `JSON_MultipleHeaders`
+
+Use non-amalgamated version of the library. This option is `OFF` by default.
+
+### `JSON_SystemInclude`
+
+Treat the library headers like system headers (i.e., adding `SYSTEM` to the [`target_include_directories`](https://cmake.org/cmake/help/latest/command/target_include_directories.html) call) to checks for this library by tools like Clang-Tidy. This option is `OFF` by default.
+
+### `JSON_Valgrind`
+
+Execute test suite with [Valgrind](https://valgrind.org). This option is `OFF` by default. Depends on `JSON_BuildTests`.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/CMakeLists.txt
new file mode 100644
index 00000000..e3fda5b9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(json_example)
+
+find_package(nlohmann_json REQUIRED)
+
+add_executable(json_example example.cpp)
+target_link_libraries(json_example PRIVATE nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/Conanfile.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/Conanfile.txt
new file mode 100644
index 00000000..6dcd6141
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/Conanfile.txt
@@ -0,0 +1,6 @@
+[requires]
+nlohmann_json/3.11.3
+
+[generators]
+CMakeToolchain
+CMakeDeps
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/conan/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cpm/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cpm/CMakeLists.txt
new file mode 100644
index 00000000..c4f63401
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cpm/CMakeLists.txt
@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 3.15)
+project(json_example)
+
+include(${CMAKE_SOURCE_DIR}/cmake/CPM.cmake)
+
+CPMAddPackage("gh:nlohmann/json@3.11.3")
+
+add_executable(json_example example.cpp)
+target_link_libraries(json_example PRIVATE nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cpm/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cpm/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/cpm/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/homebrew/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/homebrew/CMakeLists.txt
new file mode 100644
index 00000000..12f4ae1f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/homebrew/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(json_example)
+
+find_package(nlohmann_json CONFIG REQUIRED)
+
+add_executable(json_example example.cpp)
+target_link_libraries(json_example PRIVATE nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/homebrew/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/homebrew/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/homebrew/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/hunter/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/hunter/CMakeLists.txt
new file mode 100644
index 00000000..4acc3258
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/hunter/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.15)
+
+include("cmake/HunterGate.cmake")
+HunterGate(
+    URL "https://github.com/cpp-pm/hunter/archive/v0.23.297.tar.gz"
+    SHA1 "3319fe6a3b08090df7df98dee75134d68e2ef5a3"
+)
+
+project(json_example)
+
+hunter_add_package(nlohmann_json)
+find_package(nlohmann_json CONFIG REQUIRED)
+
+add_executable(json_example example.cpp)
+target_link_libraries(json_example PRIVATE nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/hunter/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/hunter/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/hunter/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/index.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/index.md
new file mode 100644
index 00000000..2bbaa860
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/index.md
@@ -0,0 +1,18 @@
+# Header only
+
+[`json.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json.hpp) is the single required
+file in `single_include/nlohmann` or [released here](https://github.com/nlohmann/json/releases). You need to add
+
+```cpp
+#include <nlohmann/json.hpp>
+
+// for convenience
+using json = nlohmann::json;
+```
+
+to the files you want to process JSON and set the necessary switches to enable C++11 (e.g., `-std=c++11` for GCC and
+Clang).
+
+You can further use file
+[`single_include/nlohmann/json_fwd.hpp`](https://github.com/nlohmann/json/blob/develop/single_include/nlohmann/json_fwd.hpp)
+for forward declarations.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/macports/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/macports/CMakeLists.txt
new file mode 100644
index 00000000..12f4ae1f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/macports/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(json_example)
+
+find_package(nlohmann_json CONFIG REQUIRED)
+
+add_executable(json_example example.cpp)
+target_link_libraries(json_example PRIVATE nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/macports/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/macports/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/macports/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/meson/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/meson/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/meson/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/meson/meson.build b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/meson/meson.build
new file mode 100644
index 00000000..ec6d2343
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/meson/meson.build
@@ -0,0 +1,12 @@
+project('json_example', 'cpp',
+  version: '1.0',
+  default_options: ['cpp_std=c++11']
+)
+
+dependency_json = dependency('nlohmann_json', required: true)
+
+executable('json_example',
+  sources: ['example.cpp'],
+  dependencies: [dependency_json],
+  install: true
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/migration_guide.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/migration_guide.md
new file mode 100644
index 00000000..d250f5b2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/migration_guide.md
@@ -0,0 +1,264 @@
+# Migration Guide
+
+This page collects some guidelines on how to future-proof your code for future versions of this library.
+
+## Replace deprecated functions
+
+The following functions have been deprecated and will be removed in the next major version (i.e., 4.0.0). All
+deprecations are annotated with
+[`HEDLEY_DEPRECATED_FOR`](https://nemequ.github.io/hedley/api-reference.html#HEDLEY_DEPRECATED_FOR) to report which
+function to use instead.
+
+#### Parsing
+
+- Function `friend std::istream& operator<<(basic_json&, std::istream&)` is deprecated since 3.0.0. Please use
+  [`friend std::istream&  operator>>(std::istream&, basic_json&)`](../api/operator_gtgt.md) instead.
+  
+    === "Deprecated"
+    
+        ```cpp
+        nlohmann::json j;
+        std::stringstream ss("[1,2,3]");
+        j << ss;
+        ```
+    
+    === "Future-proof"
+
+        ```cpp
+        nlohmann::json j;
+        std::stringstream ss("[1,2,3]");
+        ss >> j;
+        ```
+
+- Passing iterator pairs or pointer/length pairs to parsing functions ([`parse`](../api/basic_json/parse.md),
+  [`accept`](../api/basic_json/accept.md), [`sax_parse`](../api/basic_json/sax_parse.md),
+  [`from_cbor`](../api/basic_json/from_cbor.md), [`from_msgpack`](../api/basic_json/from_msgpack.md),
+  [`from_ubjson`](../api/basic_json/from_ubjson.md), and [`from_bson`](../api/basic_json/from_bson.md) via initializer
+  lists is deprecated since 3.8.0. Instead, pass two iterators; for instance, call `from_cbor(ptr, ptr+len)` instead of
+  `from_cbor({ptr, len})`.
+
+    === "Deprecated"
+  
+          ```cpp
+          const char* s = "[1,2,3]";
+          bool ok = nlohmann::json::accept({s, s + std::strlen(s)});
+          ```
+  
+    === "Future-proof"
+  
+          ```cpp
+          const char* s = "[1,2,3]";
+          bool ok = nlohmann::json::accept(s, s + std::strlen(s));
+          ```
+
+#### JSON Pointers
+
+- Comparing JSON Pointers with strings via [`operator==`](../api/json_pointer/operator_eq.md) and
+  [`operator!=`](../api/json_pointer/operator_ne.md) is deprecated since 3.11.2. To compare a
+  [`json_pointer`](../api/json_pointer/index.md) `p` with a string `s`, convert `s` to a `json_pointer` first and use
+  [`json_pointer::operator==`](../api/json_pointer/operator_eq.md) or
+  [`json_pointer::operator!=`](../api/json_pointer/operator_ne.md).
+    
+    === "Deprecated"
+  
+        ```cpp
+        nlohmann::json::json_pointer lhs("/foo/bar/1");
+        assert(lhs == "/foo/bar/1");
+        ```
+  
+    === "Future-proof"
+
+        ```cpp
+        nlohmann::json::json_pointer lhs("/foo/bar/1");
+        assert(lhs == nlohmann::json::json_pointer("/foo/bar/1"));
+        ```
+
+- The implicit conversion from JSON Pointers to string
+  ([`json_pointer::operator string_t`](../api/json_pointer/operator_string_t.md)) is deprecated since 3.11.0. Use
+  [`json_pointer::to_string`](../api/json_pointer/to_string.md) instead.
+  
+    === "Deprecated"
+  
+          ```cpp
+          nlohmann::json::json_pointer ptr("/foo/bar/1");
+          std::string s = ptr;
+          ```
+  
+    === "Future-proof"
+  
+          ```cpp
+          nlohmann::json::json_pointer ptr("/foo/bar/1");
+          std::string s = ptr.to_string();
+          ```
+
+- Passing a `basic_json` specialization as template parameter `RefStringType` to
+  [`json_pointer`](../api/json_pointer/index.md) is deprecated since 3.11.0. The string type can now be directly
+  provided.
+  
+    === "Deprecated"
+  
+          ```cpp
+          using my_json = nlohmann::basic_json<std::map, std::vector, my_string_type>;
+          nlohmann::json_pointer<my_json> ptr("/foo/bar/1");
+          ```
+  
+    === "Future-proof"
+  
+          ```cpp
+          nlohmann::json_pointer<my_string_type> ptr("/foo/bar/1");
+          ```
+  
+    Thereby, `nlohmann::my_json::json_pointer` is an alias for `nlohmann::json_pointer<my_string_type>` and is always an 
+    alias to the `json_pointer` with the appropriate string type for all specializations of `basic_json`.
+
+#### Miscellaneous functions
+
+- The function `iterator_wrapper` is deprecated since 3.1.0. Please use the member function
+  [`items`](../api/basic_json/items.md) instead.
+  
+    === "Deprecated"
+
+          ```cpp
+          for (auto &x : nlohmann::json::iterator_wrapper(j))
+          {
+              std::cout << x.key() << ":" << x.value() << std::endl;
+          }
+          ```
+
+    === "Future-proof"
+
+          ```cpp
+          for (auto &x : j.items())
+          {
+              std::cout << x.key() << ":" << x.value() << std::endl;
+          }
+          ```
+
+- Function `friend std::ostream& operator>>(const basic_json&, std::ostream&)` is deprecated since 3.0.0. Please use
+  [`friend operator<<(std::ostream&, const basic_json&)`](../api/operator_ltlt.md) instead.
+  
+    === "Deprecated"
+
+          ```cpp
+          j >> std::cout;
+          ```
+
+    === "Future-proof"
+
+          ```cpp
+          std::cout << j;
+          ```
+
+- The legacy comparison behavior for discarded values is deprecated since 3.11.0. It is already disabled by default and
+  can still be enabled by defining
+  [`JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON`](../api/macros/json_use_legacy_discarded_value_comparison.md) to `1`.
+  
+    === "Deprecated"
+
+          ```cpp
+          #define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON 1
+          #include <nlohmann/json.hpp>
+          ```
+
+    === "Future-proof"
+
+          ```cpp
+          #include <nlohmann/json.hpp>
+          ```
+
+## Replace implicit conversions
+
+Implicit conversions via [`operator ValueType`](../api/basic_json/operator_ValueType.md) will be switched off by default
+in the next major release of the library.
+
+You can prepare existing code by already defining
+[`JSON_USE_IMPLICIT_CONVERSIONS`](../api/macros/json_use_implicit_conversions.md) to `0` and replace any implicit
+conversions with calls to [`get`](../api/basic_json/get.md), [`get_to`](../api/basic_json/get_to.md),
+[`get_ref`](../api/basic_json/get_ref.md), or [`get_ptr`](../api/basic_json/get_ptr.md).
+
+=== "Deprecated"
+
+      ```cpp
+      nlohmann::json j = "Hello, world!";
+      std::string s = j;
+      ```
+
+=== "Future-proof"
+
+      ```cpp
+      nlohmann::json j = "Hello, world!";
+      auto s = j.template get<std::string>();
+      ```
+
+=== "Future-proof (alternative)"
+
+      ```cpp
+      nlohmann::json j = "Hello, world!";
+      std::string s;
+      j.get_to(s);
+      ```
+
+You can prepare existing code by already defining
+[`JSON_USE_IMPLICIT_CONVERSIONS`](../api/macros/json_use_implicit_conversions.md) to `0` and replace any implicit
+conversions with calls to [`get`](../api/basic_json/get.md).
+
+## Import namespace `literals` for UDLs
+
+The user-defined string literals [`operator""_json`](../api/operator_literal_json.md) and
+[`operator""_json_pointer`](../api/operator_literal_json_pointer.md) will be removed from the global namespace in the
+next major release of the library.
+
+=== "Deprecated"
+
+      ```cpp
+      nlohmann::json j = "[1,2,3]"_json;
+      ```
+
+=== "Future-proof"
+
+      ```cpp
+      using namespace nlohmann::literals;
+      nlohmann::json j = "[1,2,3]"_json;
+      ```
+
+To prepare existing code, define [`JSON_USE_GLOBAL_UDLS`](../api/macros/json_use_global_udls.md) to `0` and bring the
+string literals into scope where needed.
+
+## Do not hard-code the complete library namespace
+
+The [`nlohmann` namespace](../features/namespace.md) contains a sub-namespace to avoid problems when different
+versions or configurations of the library are used in the same project. Always use `nlohmann` as namespace or, when the
+exact version and configuration is relevant, use macro
+[`NLOHMANN_JSON_NAMESPACE`](../api/macros/nlohmann_json_namespace.md) to denote the namespace.
+
+=== "Dangerous"
+
+      ```cpp
+      void to_json(nlohmann::json_abi_v3_11_2::json& j, const person& p)
+      {
+          j["age"] = p.age;
+      }
+      ```
+
+=== "Future-proof"
+
+      ```cpp
+      void to_json(nlohmann::json& j, const person& p)
+      {
+          j["age"] = p.age;
+      }
+      ```
+
+=== "Future-proof (alternative)"
+
+      ```cpp
+      void to_json(NLOHMANN_JSON_NAMESPACE::json& j, const person& p)
+      {
+          j["age"] = p.age;
+      }
+      ```
+
+## Do not use the `details` namespace
+
+The `details` namespace is not part of the public API of the library and can change in any version without announcement.
+Do not rely on any function or type in the `details` namespace.
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diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/package_managers.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/package_managers.md
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+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/package_managers.md
@@ -0,0 +1,690 @@
+# Package Managers
+
+Throughout this page, we will describe how to compile the example file `example.cpp` below.
+
+```cpp
+--8<-- "integration/example.cpp"
+```
+
+When executed, this program should create output similar to
+
+```json
+--8<-- "examples/meta.output"
+```
+
+## Homebrew
+
+!!! abstract "Summary"
+
+    formula: [**`nlohmann-json`**](https://formulae.brew.sh/formula/nlohmann-json)
+
+    - :octicons-tag-24: Availalbe versions: current version and development version (with `--HEAD` parameter)
+    - :octicons-rocket-24: The formula is updated with every release.
+    - :octicons-person-24: Maintainer: Niels Lohmann
+    - :octicons-file-24: File issues at the [Homebrew issue tracker](https://github.com/Homebrew/homebrew-core/issues)
+    - :octicons-question-24: [Homebrew website](https://brew.sh)
+
+If you are using [Homebrew](http://brew.sh), you can install the library with
+
+```sh
+brew install nlohmann-json
+```
+
+The header can be used directly in your code or via CMake.
+
+??? example "Example: Raw compilation"
+
+    1. Create the following file:
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/homebrew/example.cpp"
+        ```
+
+    2. Install the package:
+
+        ```sh
+        brew install nlohmann-json
+        ```
+
+    3. Compile the code and pass the Homebrew prefix to the include path such that the library can be found:
+
+        ```sh
+        c++ example.cpp -I$(brew --prefix nlohmann-json)/include -std=c++11 -o example
+        ```
+
+??? example "Example: CMake"
+
+    1. Create the following files:
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/homebrew/example.cpp"
+        ```
+
+        ```cmake title="CMakeLists.txt"
+        --8<-- "integration/homebrew/CMakeLists.txt"
+        ```
+
+    2. Install the package:
+
+        ```sh
+        brew install nlohmann-json
+        ```
+
+    3. Compile the code and pass the Homebrew prefix to CMake to find installed packages via `#!cmake find_package`:
+
+        ```sh
+        CMAKE_PREFIX_PATH=$(brew --prefix) cmake -S . -B build
+        cmake --build build
+        ```
+
+## Meson
+
+!!! abstract "Summary"
+
+    wrap: **`nlohmann_json`**
+
+    - :octicons-tag-24: Availalbe versions: current version and select older versions (see
+      [WrapDB](https://mesonbuild.com/Wrapdb-projects.html))
+    - :octicons-rocket-24: The package is update automatically from file
+      [`meson.build`](https://github.com/nlohmann/json/blob/develop/meson.build).
+    - :octicons-file-24: File issues at the [library issue tracker](https://github.com/nlohmann/json/issues)
+    - :octicons-question-24: [Meson website](https://mesonbuild.com/index.html)
+
+If you are using the [Meson Build System](http://mesonbuild.com), add this source tree as a [meson subproject](https://mesonbuild.com/Subprojects.html#using-a-subproject). You may also use the
+`include.zip` published in this project's [Releases](https://github.com/nlohmann/json/releases) to reduce the size of the vendored source tree. Alternatively,
+you can get a wrap file by downloading it from [Meson WrapDB](https://mesonbuild.com/Wrapdb-projects.html), or simply
+use
+
+```shell
+meson wrap install nlohmann_json
+```
+
+Please see the Meson project for any issues regarding the packaging.
+
+The provided `meson.build` can also be used as an alternative to CMake for installing `nlohmann_json` system-wide in
+which case a pkg-config file is installed. To use it, simply have your build system require the `nlohmann_json`
+pkg-config dependency. In Meson, it is preferred to use the
+[`dependency()`](https://mesonbuild.com/Reference-manual.html#dependency) object with a subproject fallback, rather than
+using the subproject directly.
+
+??? example "Example: Wrap"
+
+    1. Create the following files:
+
+        ```ini title="meson.build"
+        --8<-- "integration/meson/meson.build"
+        ```
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/meson/example.cpp"
+        ```
+
+    2. Use the Meson WrapDB to fetch the nlohmann/json wrap:
+
+        ```shell
+        mkdir subprojects
+        meson wrap install nlohmann_json
+        ```
+
+    3. Build:
+
+        ```shell
+        meson setup build
+        meson compile -C build
+        ```
+
+## Bazel
+
+!!! abstract "Summary"
+
+    use `http_archive`, `git_repository`, or `local_repository`
+
+    - :octicons-tag-24: Any version, as version is specified in `WORKSPACE` file
+    - :octicons-file-24: File issues at the [library issue tracker](https://github.com/nlohmann/json/issues)
+    - :octicons-question-24: [Bazel website](https://bazel.build)
+
+This repository provides a [Bazel](https://bazel.build/) `WORKSPACE.bazel` and a corresponding `BUILD.bazel` file. Therefore, this
+repository can be referenced by workspace rules such as `http_archive`, `git_repository`, or `local_repository` from
+other Bazel workspaces. To use the library you only need to depend on the target `@nlohmann_json//:json` (e.g., via
+`deps` attribute).
+
+??? example
+
+    1. Create the following files:
+
+        ```ini title="BUILD"
+        --8<-- "integration/bazel/BUILD"
+        ```
+
+        ```ini title="WORKSPACE"
+        --8<-- "integration/bazel/WORKSPACE"
+        ```
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/bazel/example.cpp"
+        ```
+
+    2. Build and run:
+
+        ```shell
+        bazel build //:main
+        bazel run //:main
+        ```
+
+## Conan
+
+!!! abstract "Summary"
+
+    recipe: [**`nlohmann_json`**](https://conan.io/center/recipes/nlohmann_json)
+
+    - :octicons-tag-24: Availalbe versions: current version and older versions (see
+      [Conan Center](https://conan.io/center/recipes/nlohmann_json))
+    - :octicons-rocket-24: The package is update automatically via
+      [this recipe](https://github.com/conan-io/conan-center-index/tree/master/recipes/nlohmann_json).
+    - :octicons-file-24: File issues at the [Conan Center issue tracker](https://github.com/conan-io/conan-center-index/issues)
+    - :octicons-question-24: [Conan website](https://conan.io)
+
+If you are using [Conan](https://www.conan.io/) to manage your dependencies, merely add `nlohmann_json/x.y.z` to your `conanfile`'s
+requires, where `x.y.z` is the release version you want to use.
+
+??? example
+
+    1. Create the following files:
+
+        ```ini title="Conanfile.txt"
+        --8<-- "integration/conan/Conanfile.txt"
+        ```
+
+        ```cmake title="CMakeLists.txt"
+        --8<-- "integration/conan/CMakeLists.txt"
+        ```
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/conan/example.cpp"
+        ```
+
+    2. Call Conan:
+
+        ```sh
+        conan install . --output-folder=build --build=missing
+        ```
+
+    3. Build:
+
+        ```sh
+        cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE="conan_toolchain.cmake" -DCMAKE_BUILD_TYPE=Release
+        cmake --build build
+        ```
+
+## Spack
+
+!!! abstract "Summary"
+
+    package: [**`nlohmann-json`**](https://packages.spack.io/package.html?name=nlohmann-json)
+
+    - :octicons-tag-24: Availalbe versions: current version and older versions (see
+      [Spack package](https://packages.spack.io/package.html?name=nlohmann-json))
+    - :octicons-rocket-24: The package is updated with every release.
+    - :octicons-person-24: Maintainer: [Axel Huebl](https://github.com/ax3l)
+    - :octicons-file-24: File issues at the [Spack issue tracker](https://github.com/spack/spack/issues)
+    - :octicons-question-24: [Spack website](https://spack.io)
+
+If you are using [Spack](https://www.spack.io/) to manage your dependencies, you can use the
+[`nlohmann-json` package](https://packages.spack.io/package.html?name=nlohmann-json) via
+
+```shell
+spack install nlohmann-json
+```
+
+Please see the [Spack project](https://github.com/spack/spack) for any issues regarding the packaging.
+
+??? example
+
+    1. Create the following files:
+
+        ```cmake title="CMakeLists.txt"
+        --8<-- "integration/spack/CMakeLists.txt"
+        ```
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/spack/example.cpp"
+        ```
+
+    2. Install the library:
+
+        ```sh
+        spack install nlohmann-json
+        ```
+
+    3. Load the environment for your Spack-installed packages:
+
+        ```sh
+        spack load nlohmann-json
+        ```
+
+    4. Build the project with CMake:
+
+        ```sh
+        cmake -S . -B build -DCMAKE_PREFIX_PATH=$(spack location -i nlohmann-json)
+        cmake --build build
+        ```
+
+## Hunter
+
+!!! abstract "Summary"
+
+    package: [**`nlohmann_json`**](https://hunter.readthedocs.io/en/latest/packages/pkg/nlohmann_json.html)
+
+    - :octicons-tag-24: Availalbe versions: current version and older versions (see
+      [Hunter package](https://hunter.readthedocs.io/en/latest/packages/pkg/nlohmann_json.html))
+    - :octicons-rocket-24: The package is updated with every release.
+    - :octicons-file-24: File issues at the [Hunter issue tracker](https://github.com/cpp-pm/hunter/issues)
+    - :octicons-question-24: [Hunter website](https://hunter.readthedocs.io/en/latest/)
+
+If you are using [Hunter](https://github.com/cpp-pm/hunter) on your project for external dependencies, then you can use
+the [nlohmann_json package](https://hunter.readthedocs.io/en/latest/packages/pkg/nlohmann_json.html) via
+
+```cmake
+hunter_add_package(nlohmann_json)
+```
+
+Please see the  Hunter project for any issues regarding the packaging.
+
+??? example
+
+    1. Create the following files:
+
+        ```cmake title="CMakeLists.txt"
+        --8<-- "integration/hunter/CMakeLists.txt"
+        ```
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/hunter/example.cpp"
+        ```
+
+    2. Download required files
+
+        ```shell
+        mkdir cmake
+        wget https://raw.githubusercontent.com/cpp-pm/gate/master/cmake/HunterGate.cmake -O cmake/HunterGate.cmake
+        ```
+
+    3. Build the project with CMake:
+
+        ```shell
+        cmake -S . -B build
+        cmake --build build
+        ```
+
+## Buckaroo
+
+If you are using [Buckaroo](https://buckaroo.pm), you can install this library's module with `buckaroo add github.com/buckaroo-pm/nlohmann-json`. There is a demo repo [here](https://github.com/njlr/buckaroo-nholmann-json-example).
+
+!!! warning
+
+    The module is outdated as the respective [repository](https://github.com/buckaroo-pm/nlohmann-json) has not been
+    updated in years.
+
+## vcpkg
+
+!!! abstract "Summary"
+
+    package: [**`nlohmann-json`**](https://github.com/Microsoft/vcpkg/tree/master/ports/nlohmann-json)
+
+    - :octicons-tag-24: Availalbe versions: current version
+    - :octicons-rocket-24: The package is updated with every release.
+    - :octicons-file-24: File issues at the [vcpkg issue tracker](https://github.com/microsoft/vcpkg/issues)
+    - :octicons-question-24: [vcpkg website](https://vcpkg.io/)
+
+If you are using [vcpkg](https://github.com/Microsoft/vcpkg/) on your project for external dependencies, then you can
+install the [nlohmann-json package](https://github.com/Microsoft/vcpkg/tree/master/ports/nlohmann-json) with
+
+```shell
+vcpkg install nlohmann-json
+```
+
+and follow the then displayed descriptions. Please see the vcpkg project for any issues regarding the packaging.
+
+??? example
+
+    1. Create the following files:
+
+        ```cmake title="CMakeLists.txt"
+        --8<-- "integration/vcpkg/CMakeLists.txt"
+        ```
+    
+        ```cpp title="example.cpp"
+        --8<-- "integration/vcpkg/example.cpp"
+        ```
+
+    2. Install package:
+
+        ```sh
+        vcpkg install nlohmann-json
+        ```
+
+    3. Build:
+
+        ```sh
+        cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=$VCPKG_ROOT/scripts/buildsystems/vcpkg.cmake
+        cmake --build build
+        ```
+
+## cget
+
+!!! abstract "Summary"
+
+    package: [**`nlohmann/json`**](https://github.com/pfultz2/cget-recipes/blob/master/recipes/nlohmann/json/package.txt)
+
+    - :octicons-tag-24: Availalbe versions: current version and older versions
+    - :octicons-rocket-24: The package is updated with every release.
+    - :octicons-file-24: File issues at the [cget issue tracker](https://github.com/pfultz2/cget-recipes/issues)
+    - :octicons-question-24: [cget website](https://cget.readthedocs.io/)
+
+If you are using [cget](http://cget.readthedocs.io/en/latest/), you can install the latest `master` version with
+
+```shell
+cget install nlohmann/json
+```
+
+A specific version can be installed with `cget install nlohmann/json@v3.11.3`. Also, the multiple header version can be
+installed by adding the `-DJSON_MultipleHeaders=ON` flag (i.e., `cget install nlohmann/json -DJSON_MultipleHeaders=ON`).
+
+??? example
+
+    1. Create the following files:
+
+        ```cmake title="CMakeLists.txt"
+        --8<-- "integration/vcpkg/CMakeLists.txt"
+        ```
+    
+        ```cpp title="example.cpp"
+        --8<-- "integration/vcpkg/example.cpp"
+        ```
+
+    2. Initialize cget
+
+        ```shell
+        cget init
+        ```
+ 
+    3. Install the library
+
+        ```shell
+        cget install nlohmann/json
+        ```
+
+    4. Build
+
+        ```shell
+        cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=cget/cget/cget.cmake
+        cmake --build build
+        ```
+
+## CocoaPods
+
+If you are using [CocoaPods](https://cocoapods.org), you can use the library by adding pod `"nlohmann_json", '~>3.1.2'` to your podfile (see [an example](https://bitbucket.org/benman/nlohmann_json-cocoapod/src/master/)). Please file issues [here](https://bitbucket.org/benman/nlohmann_json-cocoapod/issues?status=new&status=open).
+
+## NuGet
+
+!!! abstract "Summary"
+
+    package: [**`nlohmann.json`**](https://www.nuget.org/packages/nlohmann.json/)
+
+    - :octicons-tag-24: Availalbe versions: current and previous versions
+    - :octicons-rocket-24: The package is updated with every release.
+    - :octicons-person-24: Maintainer: [Hani Kaabi](https://github.com/hnkb)
+    - :octicons-file-24: File issues at the [maintainer's issue tracker](https://github.com/hnkb/nlohmann-json-nuget/issues)
+    - :octicons-question-24: [NuGet website](https://www.nuget.org)
+
+If you are using [NuGet](https://www.nuget.org), you can use the package [nlohmann.json](https://www.nuget.org/packages/nlohmann.json/)
+with
+
+```shell
+dotnet add package nlohmann.json
+```
+
+??? example
+
+    Probably the easiest way to use NuGet packages is through Visual Studio graphical interface. Just right-click on a
+    project (any C++ project would do) in “Solution Explorer” and select “Manage NuGet Packages…”
+
+    ![](nuget/nuget-search-package.png)
+
+    Now you can click on “Browse” tab and find the package you like to install.
+
+    ![](nuget/nuget-select-package.png)
+
+    Most of the packages in NuGet gallery are .NET packages and would not be useful in a C++ project. Microsoft
+    recommends adding “native” and “nativepackage” tags to C++ NuGet packages to distinguish them, but even adding
+    “native” to search query would still show many .NET-only packages in the list.
+    
+    Nevertheless, after finding the package you want, just click on “Install” button and accept confirmation dialogs.
+    After the package is successfully added to the projects, you should be able to just build and execute the project
+    without the need for making any more changes to build settings.
+
+    !!! note
+
+        A few notes:
+    
+        - NuGet packages are installed per project and not system-wide. The header and binaries for the package are only
+          available to the project it is added to, and not other projects (obviously unless we add the package to those
+          projects as well)
+        - One of the many great things about your elegant work is that it is a header-only library, which makes
+          deployment very straightforward. In case of libraries which need binary deployment (`.lib`, `.dll` and `.pdb`
+          for debug info) the different binaries for each supported compiler version must be added to the NuGet package.
+          Some library creators cram binary versions for all supported Visual C++ compiler versions in the same package,
+          so a single package will support all compilers. Some others create a different package for each compiler
+          version (and you usually see things like “v140” or “vc141” in package name to clarify which VC++ compiler this
+          package supports).
+        - Packages can have dependency to other packages, and in this case, NuGet will install all dependencies as well
+          as the requested package recursively.
+
+    **What happens behind the scenes**
+
+    After you add a NuGet package, three changes occur in the project source directory. Of course, we could make these
+    changes manually instead of using GUI:
+    
+    ![](nuget/nuget-project-changes.png)
+    
+    1. A `packages.config` file will be created (or updated to include the package name if one such file already
+       exists). This file contains a list of the packages required by this project (name and minimum version) and must
+       be added to the project source code repository, so if you move the source code to a new machine, MSBuild/NuGet
+       knows which packages it has to restore (which it does automatically before each build).
+
+        ```xml
+        <?xml version="1.0" encoding="utf-8"?>
+        <packages>
+          <package id="nlohmann.json" version="3.5.0" targetFramework="native" />
+        </packages>
+        ```
+
+    2. A `packages` folder which contains actual files in the packages (these are header and binary files required for
+       a successful build, plus a few metadata files). In case of this library for example, it contains `json.hpp`:
+    
+        ![](nuget/nuget-package-content.png)
+    
+        !!! note
+
+            This directory should not be added to the project source code repository, as it will be restored before each
+            build by MSBuild/NuGet. If you go ahead and delete this folder, then build the project again, it will
+            magically re-appear!
+    
+    3. Project MSBuild makefile (which for Visual C++ projects has a .vcxproj extension) will be updated to include
+       settings from the package.
+    
+        ![](nuget/nuget-project-makefile.png)
+    
+        The important bit for us here is line 170, which tells MSBuild to import settings from
+        `packages\nlohmann.json.3.5.0\build\native\nlohmann.json.targets` file. This is a file the package creator
+        created and added to the package (you can see it is one of the two files I created in this repository, the other
+        just contains package attributes like name and version number). What does it contain?
+    
+        For our header-only repository, the only setting we need is to add our include directory to the list of
+        `AdditionalIncludeDirectories`:
+
+        ```xml    
+        <?xml version="1.0" encoding="utf-8"?>
+        <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+            <ItemDefinitionGroup>
+                <ClCompile>
+                    <AdditionalIncludeDirectories>$(MSBuildThisFileDirectory)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+                </ClCompile>
+            </ItemDefinitionGroup>
+        </Project>
+        ```
+
+        For libraries with binary files, we will need to add `.lib` files to linker inputs and add settings to copy
+        `.dll` and other redistributable files to output directory, if needed.
+    
+        There are other changes to the makefile as well:
+    
+        - Lines 165-167 add the `packages.config` as one of project files (so it is shown in Solution Explorer tree
+          view). It is added as None (no build action) and removing it wouldn’t affect build.
+    
+        - Lines 172-177 check to ensure the required packages are present. This will display a build error if package
+          directory is empty (for example when NuGet cannot restore packages because Internet connection is down).
+          Again, if you omit this section, the only change in build would be a more cryptic error message if build
+          fails.
+    
+        !!! note
+
+            Changes to .vcxproj makefile should also be added to project source code repository.
+    
+    As you can see, the mechanism NuGet uses to modify project settings is through MSBuild makefiles, so using NuGet
+    with other build systems and compilers (like CMake) as a dependency manager is either impossible or more problematic
+    than useful.
+
+Please refer to [this extensive description](https://github.com/nlohmann/json/issues/1132#issuecomment-452250255) for
+more information.
+
+## Conda
+
+If you are using [conda](https://conda.io/), you can use the package [nlohmann_json](https://github.com/conda-forge/nlohmann_json-feedstock) from [conda-forge](https://conda-forge.org) executing `conda install -c conda-forge nlohmann_json`. Please file issues [here](https://github.com/conda-forge/nlohmann_json-feedstock/issues).
+
+## MSYS2
+
+If you are using [MSYS2](http://www.msys2.org/), you can use the [mingw-w64-nlohmann-json](https://packages.msys2.org/base/mingw-w64-nlohmann-json) package, just type `pacman -S mingw-w64-i686-nlohmann-json` or `pacman -S mingw-w64-x86_64-nlohmann-json` for installation. Please file issues [here](https://github.com/msys2/MINGW-packages/issues/new?title=%5Bnlohmann-json%5D) if you experience problems with the packages.
+
+:material-update: The [package](https://packages.msys2.org/base/mingw-w64-nlohmann-json) is updated automatically.
+
+## MacPorts
+
+!!! abstract "Summary"
+
+    port: [**`nlohmann-json`**](https://ports.macports.org/port/nlohmann-json/)
+
+    - :octicons-tag-24: Availalbe versions: current version
+    - :octicons-rocket-24: The port is updated with every release.
+    - :octicons-file-24: File issues at the [MacPorts issue tracker](https://trac.macports.org/newticket?port=nlohmann-json)
+    - :octicons-question-24: [MacPorts website](https://www.macports.org)
+
+If you are using [MacPorts](https://ports.macports.org), execute 
+
+```shell
+sudo port install nlohmann-json
+```
+
+to install the [nlohmann-json](https://ports.macports.org/port/nlohmann-json/) package.
+
+??? example "Example: Raw compilation"
+
+    1. Create the following file:
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/macports/example.cpp"
+        ```
+
+    2. Install the package:
+
+        ```sh
+        sudo port install nlohmann-json
+        ```
+
+    3. Compile the code and pass the Homebrew prefix to the include path such that the library can be found:
+
+        ```sh
+        c++ example.cpp -I/opt/local/include -std=c++11 -o example
+        ```
+
+??? example "Example: CMake"
+
+    1. Create the following files:
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/homebrew/example.cpp"
+        ```
+
+        ```cmake title="CMakeLists.txt"
+        --8<-- "integration/homebrew/CMakeLists.txt"
+        ```
+
+    2. Install the package:
+
+        ```sh
+        sudo port install nlohmann-json
+        ```
+
+    3. Compile the code:
+
+        ```sh
+        cmake -S . -B build
+        cmake --build build
+        ```
+
+## build2
+
+If you are using [`build2`](https://build2.org), you can use the [`nlohmann-json`](https://cppget.org/nlohmann-json) package from the public repository <http://cppget.org> or directly from the [package's sources repository](https://github.com/build2-packaging/nlohmann-json). In your project's `manifest` file, just add `depends: nlohmann-json` (probably with some [version constraints](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml#guide-add-remove-deps)). If you are not familiar with using dependencies in `build2`, [please read this introduction](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml).
+Please file issues [here](https://github.com/build2-packaging/nlohmann-json) if you experience problems with the packages.
+
+:material-update: The [package](https://cppget.org/nlohmann-json) is updated automatically.
+
+## wsjcpp
+
+If you are using [`wsjcpp`](http://wsjcpp.org), you can use the command `wsjcpp install "https://github.com/nlohmann/json:develop"` to get the latest version. Note you can change the branch ":develop" to an existing tag or another branch.
+
+:material-update: wsjcpp reads directly from the [GitHub repository](https://github.com/nlohmann/json) and is always up-to-date.
+
+## CPM.cmake
+
+!!! abstract "Summary"
+
+    package: **`gh:nlohmann/json`**
+
+    - :octicons-tag-24: Availalbe versions: current and previous versions
+    - :octicons-rocket-24: The package is updated with every release.
+    - :octicons-file-24: File issues at the [CPM.cmake issue tracker](https://github.com/cpm-cmake/CPM.cmake/issues)
+    - :octicons-question-24: [CPM.cmake website](https://github.com/cpm-cmake/CPM.cmake)
+
+If you are using [`CPM.cmake`](https://github.com/TheLartians/CPM.cmake), add the
+[CPM.cmake script](https://github.com/TheLartians/CPM.cmake#adding-cpm) and the following snippet to your CMake project:
+
+```cmake
+CPMAddPackage("gh:nlohmann/json@3.11.3")
+```
+
+??? example
+
+    1. Create the following files:
+
+        ```cpp title="example.cpp"
+        --8<-- "integration/cpm/example.cpp"
+        ```
+
+        ```cmake title="CMakeLists.txt"
+        --8<-- "integration/cpm/CMakeLists.txt"
+        ```
+
+    2. Download CPM.cmake
+
+        ```shell
+        mkdir -p cmake
+        wget -O cmake/CPM.cmake https://github.com/cpm-cmake/CPM.cmake/releases/latest/download/get_cpm.cmake
+        ```
+
+    3. Build
+
+        ```shell
+        cmake -S . -B build
+        cmake --build build
+        ```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/pkg-config.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/pkg-config.md
new file mode 100644
index 00000000..429d0dea
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/pkg-config.md
@@ -0,0 +1,13 @@
+# Pkg-config
+
+If you are using bare Makefiles, you can use `pkg-config` to generate the include flags that point to where the library is installed:
+
+```sh
+pkg-config nlohmann_json --cflags
+```
+
+Users of the [Meson build system](package_managers.md#meson) will also be able to use a system-wide library, which will be found by `pkg-config`:
+
+```meson
+json = dependency('nlohmann_json', required: true)
+```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/spack/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/spack/CMakeLists.txt
new file mode 100644
index 00000000..e3fda5b9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/spack/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(json_example)
+
+find_package(nlohmann_json REQUIRED)
+
+add_executable(json_example example.cpp)
+target_link_libraries(json_example PRIVATE nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/spack/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/spack/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/spack/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/vcpkg/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/vcpkg/CMakeLists.txt
new file mode 100644
index 00000000..12f4ae1f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/vcpkg/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(json_example)
+
+find_package(nlohmann_json CONFIG REQUIRED)
+
+add_executable(json_example example.cpp)
+target_link_libraries(json_example PRIVATE nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/vcpkg/example.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/vcpkg/example.cpp
new file mode 100644
index 00000000..1a7ac4de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/docs/integration/vcpkg/example.cpp
@@ -0,0 +1,10 @@
+#include <nlohmann/json.hpp>
+#include <iostream>
+#include <iomanip>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::cout << std::setw(4) << json::meta() << std::endl;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/mkdocs.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/mkdocs.yml
new file mode 100644
index 00000000..ccf75a6f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/mkdocs.yml
@@ -0,0 +1,376 @@
+# Project information
+site_name: JSON for Modern C++
+site_author: Niels Lohmann
+site_url: https://json.nlohmann.me/
+
+# Repository
+repo_name: nlohmann/json
+repo_url: https://github.com/nlohmann/json
+edit_uri: edit/develop/docs/mkdocs/docs
+
+# Copyright
+copyright: Copyright &copy; 2013 - 2024 Niels Lohmann
+
+# Configuration
+theme:
+  name: material
+  language: en
+  palette:
+    - media: '(prefers-color-scheme: light)'
+      scheme: default
+      primary: indigo
+      accent: indigo
+      toggle:
+        icon: material/brightness-7 
+        name: Switch to dark mode
+    - media: '(prefers-color-scheme: dark)'
+      scheme: slate
+      primary: indigo
+      accent: indigo
+      toggle:
+        icon: material/brightness-4
+        name: Switch to light mode
+  icon:
+    repo: fontawesome/brands/github
+  font:
+    text: Roboto
+    code: JetBrains Mono
+  features:
+    - navigation.instant
+    - navigation.tracking
+    - navigation.tabs
+    - navigation.indexes
+    - navigation.top
+    - content.tabs.link
+    - content.action.edit
+    - content.action.view
+
+nav:
+  - Home:
+    - index.md
+    - home/license.md
+    - "Code of Conduct": home/code_of_conduct.md
+    - "FAQ": home/faq.md
+    - home/exceptions.md
+    - home/releases.md
+    - home/design_goals.md
+    - home/customers.md
+    - home/sponsors.md
+  - Features:
+    - features/arbitrary_types.md
+    - Binary Formats:
+      - features/binary_formats/index.md
+      - features/binary_formats/bjdata.md
+      - features/binary_formats/bson.md
+      - features/binary_formats/cbor.md
+      - features/binary_formats/messagepack.md
+      - features/binary_formats/ubjson.md
+    - features/binary_values.md
+    - features/comments.md
+    - Element Access:
+      - features/element_access/index.md
+      - features/element_access/unchecked_access.md
+      - features/element_access/checked_access.md
+      - features/element_access/default_value.md
+    - features/iterators.md
+    - features/json_pointer.md
+    - features/json_patch.md
+    - features/merge_patch.md
+    - 'nlohmann Namespace': features/namespace.md
+    - features/object_order.md
+    - Parsing:
+        - features/parsing/index.md
+        - features/parsing/json_lines.md
+        - features/parsing/parse_exceptions.md
+        - features/parsing/parser_callbacks.md
+        - features/parsing/sax_interface.md
+    - features/assertions.md
+    - features/enum_conversion.md
+    - features/macros.md
+    - Types:
+        - features/types/index.md
+        - features/types/number_handling.md
+  - Integration:
+    - integration/index.md
+    - integration/migration_guide.md
+    - integration/cmake.md
+    - integration/package_managers.md
+    - integration/pkg-config.md
+  - API Documentation:
+      - basic_json:
+        - 'Overview': api/basic_json/index.md
+        - '(Constructor)': api/basic_json/basic_json.md
+        - '(Destructor)': api/basic_json/~basic_json.md
+        - 'accept': api/basic_json/accept.md
+        - 'array': api/basic_json/array.md
+        - 'array_t': api/basic_json/array_t.md
+        - 'at': api/basic_json/at.md
+        - 'back': api/basic_json/back.md
+        - 'begin': api/basic_json/begin.md
+        - 'binary': api/basic_json/binary.md
+        - 'binary_t': api/basic_json/binary_t.md
+        - 'boolean_t': api/basic_json/boolean_t.md
+        - 'cbegin': api/basic_json/cbegin.md
+        - 'cbor_tag_handler_t': api/basic_json/cbor_tag_handler_t.md
+        - 'cend': api/basic_json/cend.md
+        - 'clear': api/basic_json/clear.md
+        - 'contains': api/basic_json/contains.md
+        - 'count': api/basic_json/count.md
+        - 'crbegin': api/basic_json/crbegin.md
+        - 'crend': api/basic_json/crend.md
+        - 'default_object_comparator_t': api/basic_json/default_object_comparator_t.md
+        - 'diff': api/basic_json/diff.md
+        - 'dump': api/basic_json/dump.md
+        - 'emplace': api/basic_json/emplace.md
+        - 'emplace_back': api/basic_json/emplace_back.md
+        - 'empty': api/basic_json/empty.md
+        - 'end': api/basic_json/end.md
+        - 'erase': api/basic_json/erase.md
+        - 'error_handler_t': api/basic_json/error_handler_t.md
+        - 'exception': api/basic_json/exception.md
+        - 'find': api/basic_json/find.md
+        - 'flatten': api/basic_json/flatten.md
+        - 'from_bjdata': api/basic_json/from_bjdata.md
+        - 'from_bson': api/basic_json/from_bson.md
+        - 'from_cbor': api/basic_json/from_cbor.md
+        - 'from_msgpack': api/basic_json/from_msgpack.md
+        - 'from_ubjson': api/basic_json/from_ubjson.md
+        - 'front': api/basic_json/front.md
+        - 'get': api/basic_json/get.md
+        - 'get_allocator': api/basic_json/get_allocator.md
+        - 'get_binary': api/basic_json/get_binary.md
+        - 'get_ptr': api/basic_json/get_ptr.md
+        - 'get_ref': api/basic_json/get_ref.md
+        - 'get_to': api/basic_json/get_to.md
+        - 'std::hash&lt;basic_json&gt;': api/basic_json/std_hash.md
+        - 'input_format_t': api/basic_json/input_format_t.md
+        - 'insert': api/basic_json/insert.md
+        - 'invalid_iterator': api/basic_json/invalid_iterator.md
+        - 'is_array': api/basic_json/is_array.md
+        - 'is_binary': api/basic_json/is_binary.md
+        - 'is_boolean': api/basic_json/is_boolean.md
+        - 'is_discarded': api/basic_json/is_discarded.md
+        - 'is_null': api/basic_json/is_null.md
+        - 'is_number': api/basic_json/is_number.md
+        - 'is_number_float': api/basic_json/is_number_float.md
+        - 'is_number_integer': api/basic_json/is_number_integer.md
+        - 'is_number_unsigned': api/basic_json/is_number_unsigned.md
+        - 'is_object': api/basic_json/is_object.md
+        - 'is_primitive': api/basic_json/is_primitive.md
+        - 'is_string': api/basic_json/is_string.md
+        - 'is_structured': api/basic_json/is_structured.md
+        - 'items': api/basic_json/items.md
+        - 'json_base_class_t': api/basic_json/json_base_class_t.md
+        - 'json_serializer': api/basic_json/json_serializer.md
+        - 'max_size': api/basic_json/max_size.md
+        - 'meta': api/basic_json/meta.md
+        - 'merge_patch': api/basic_json/merge_patch.md
+        - 'number_float_t': api/basic_json/number_float_t.md
+        - 'number_integer_t': api/basic_json/number_integer_t.md
+        - 'number_unsigned_t': api/basic_json/number_unsigned_t.md
+        - 'object': api/basic_json/object.md
+        - 'object_comparator_t': api/basic_json/object_comparator_t.md
+        - 'object_t': api/basic_json/object_t.md
+        - 'operator ValueType': api/basic_json/operator_ValueType.md
+        - 'operator value_t': api/basic_json/operator_value_t.md
+        - 'operator[]': api/basic_json/operator[].md
+        - 'operator=': api/basic_json/operator=.md
+        - 'operator+=': api/basic_json/operator+=.md
+        - 'operator==': api/basic_json/operator_eq.md
+        - 'operator!=': api/basic_json/operator_ne.md
+        - 'operator<': api/basic_json/operator_lt.md
+        - 'operator>': api/basic_json/operator_gt.md
+        - 'operator<=': api/basic_json/operator_le.md
+        - 'operator>=': api/basic_json/operator_ge.md
+        - 'operator<=>': api/basic_json/operator_spaceship.md
+        - 'out_of_range': api/basic_json/out_of_range.md
+        - 'other_error': api/basic_json/other_error.md
+        - 'parse': api/basic_json/parse.md
+        - 'parse_error': api/basic_json/parse_error.md
+        - 'parse_event_t': api/basic_json/parse_event_t.md
+        - 'parser_callback_t': api/basic_json/parser_callback_t.md
+        - 'patch': api/basic_json/patch.md
+        - 'patch_inplace': api/basic_json/patch_inplace.md
+        - 'push_back': api/basic_json/push_back.md
+        - 'rbegin': api/basic_json/rbegin.md
+        - 'rend': api/basic_json/rend.md
+        - 'sax_parse': api/basic_json/sax_parse.md
+        - 'size': api/basic_json/size.md
+        - 'string_t': api/basic_json/string_t.md
+        - 'swap': api/basic_json/swap.md
+        - 'std::swap&lt;basic_json&gt;': api/basic_json/std_swap.md
+        - 'to_bjdata': api/basic_json/to_bjdata.md
+        - 'to_bson': api/basic_json/to_bson.md
+        - 'to_cbor': api/basic_json/to_cbor.md
+        - 'to_msgpack': api/basic_json/to_msgpack.md
+        - 'to_string': api/basic_json/to_string.md
+        - 'to_ubjson': api/basic_json/to_ubjson.md
+        - 'type': api/basic_json/type.md
+        - 'type_error': api/basic_json/type_error.md
+        - 'type_name': api/basic_json/type_name.md
+        - 'unflatten': api/basic_json/unflatten.md
+        - 'update': api/basic_json/update.md
+        - 'value': api/basic_json/value.md
+        - 'value_t': api/basic_json/value_t.md
+      - byte_container_with_subtype:
+        - 'Overview': api/byte_container_with_subtype/index.md
+        - '(constructor)': api/byte_container_with_subtype/byte_container_with_subtype.md
+        - 'clear_subtype': api/byte_container_with_subtype/clear_subtype.md
+        - 'has_subtype': api/byte_container_with_subtype/has_subtype.md
+        - 'set_subtype': api/byte_container_with_subtype/set_subtype.md
+        - 'subtype': api/byte_container_with_subtype/subtype.md
+      - adl_serializer:
+        - 'Overview': api/adl_serializer/index.md
+        - 'from_json': api/adl_serializer/from_json.md
+        - 'to_json': api/adl_serializer/to_json.md
+      - 'json': api/json.md
+      - json_pointer:
+        - 'Overview': api/json_pointer/index.md
+        - '(Constructor)': api/json_pointer/json_pointer.md
+        - 'back': api/json_pointer/back.md
+        - 'empty': api/json_pointer/empty.md
+        - 'operator string_t': api/json_pointer/operator_string_t.md
+        - 'operator==': api/json_pointer/operator_eq.md
+        - 'operator!=': api/json_pointer/operator_ne.md
+        - 'operator/': api/json_pointer/operator_slash.md
+        - 'operator/=': api/json_pointer/operator_slasheq.md
+        - 'parent_pointer': api/json_pointer/parent_pointer.md
+        - 'pop_back': api/json_pointer/pop_back.md
+        - 'push_back': api/json_pointer/push_back.md
+        - 'string_t': api/json_pointer/string_t.md
+        - 'to_string': api/json_pointer/to_string.md
+      - json_sax:
+        - 'Overview': api/json_sax/index.md
+        - 'binary': api/json_sax/binary.md
+        - 'boolean': api/json_sax/boolean.md
+        - 'end_array': api/json_sax/end_array.md
+        - 'end_object': api/json_sax/end_object.md
+        - 'key': api/json_sax/key.md
+        - 'null': api/json_sax/null.md
+        - 'number_float': api/json_sax/number_float.md
+        - 'number_integer': api/json_sax/number_integer.md
+        - 'number_unsigned': api/json_sax/number_unsigned.md
+        - 'parse_error': api/json_sax/parse_error.md
+        - 'start_array': api/json_sax/start_array.md
+        - 'start_object': api/json_sax/start_object.md
+        - 'string': api/json_sax/string.md
+      - 'operator<<(basic_json)': api/operator_ltlt.md
+      - 'operator<<(json_pointer)': api/operator_ltlt.md
+      - 'operator>>(basic_json)': api/operator_gtgt.md
+      - 'operator""_json': api/operator_literal_json.md
+      - 'operator""_json_pointer': api/operator_literal_json_pointer.md
+      - 'ordered_json': api/ordered_json.md
+      - 'ordered_map': api/ordered_map.md
+      - macros:
+        - 'Overview': api/macros/index.md
+        - 'JSON_ASSERT': api/macros/json_assert.md
+        - 'JSON_CATCH_USER': api/macros/json_throw_user.md
+        - 'JSON_DIAGNOSTICS': api/macros/json_diagnostics.md
+        - 'JSON_DISABLE_ENUM_SERIALIZATION': api/macros/json_disable_enum_serialization.md
+        - 'JSON_HAS_CPP_11': api/macros/json_has_cpp_11.md
+        - 'JSON_HAS_CPP_14': api/macros/json_has_cpp_11.md
+        - 'JSON_HAS_CPP_17': api/macros/json_has_cpp_11.md
+        - 'JSON_HAS_CPP_20': api/macros/json_has_cpp_11.md
+        - 'JSON_HAS_EXPERIMENTAL_FILESYSTEM': api/macros/json_has_filesystem.md
+        - 'JSON_HAS_FILESYSTEM': api/macros/json_has_filesystem.md
+        - 'JSON_HAS_RANGES': api/macros/json_has_ranges.md
+        - 'JSON_HAS_STATIC_RTTI': api/macros/json_has_static_rtti.md
+        - 'JSON_HAS_THREE_WAY_COMPARISON': api/macros/json_has_three_way_comparison.md
+        - 'JSON_NOEXCEPTION': api/macros/json_noexception.md
+        - 'JSON_NO_IO': api/macros/json_no_io.md
+        - 'JSON_SKIP_LIBRARY_VERSION_CHECK': api/macros/json_skip_library_version_check.md
+        - 'JSON_SKIP_UNSUPPORTED_COMPILER_CHECK': api/macros/json_skip_unsupported_compiler_check.md
+        - 'JSON_THROW_USER': api/macros/json_throw_user.md
+        - 'JSON_TRY_USER': api/macros/json_throw_user.md
+        - 'JSON_USE_GLOBAL_UDLS': api/macros/json_use_global_udls.md
+        - 'JSON_USE_IMPLICIT_CONVERSIONS': api/macros/json_use_implicit_conversions.md
+        - 'JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON': api/macros/json_use_legacy_discarded_value_comparison.md
+        - 'NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE': api/macros/nlohmann_define_derived_type.md
+        - 'NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT': api/macros/nlohmann_define_derived_type.md
+        - 'NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE': api/macros/nlohmann_define_derived_type.md
+        - 'NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE': api/macros/nlohmann_define_derived_type.md
+        - 'NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT': api/macros/nlohmann_define_derived_type.md
+        - 'NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE': api/macros/nlohmann_define_derived_type.md
+        - 'NLOHMANN_DEFINE_TYPE_INTRUSIVE': api/macros/nlohmann_define_type_intrusive.md
+        - 'NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT': api/macros/nlohmann_define_type_intrusive.md
+        - 'NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE': api/macros/nlohmann_define_type_non_intrusive.md
+        - 'NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT': api/macros/nlohmann_define_type_non_intrusive.md
+        - 'NLOHMANN_JSON_NAMESPACE': api/macros/nlohmann_json_namespace.md
+        - 'NLOHMANN_JSON_NAMESPACE_BEGIN': api/macros/nlohmann_json_namespace_begin.md
+        - 'NLOHMANN_JSON_NAMESPACE_END': api/macros/nlohmann_json_namespace_begin.md
+        - 'NLOHMANN_JSON_NAMESPACE_NO_VERSION': api/macros/nlohmann_json_namespace_no_version.md
+        - 'NLOHMANN_JSON_SERIALIZE_ENUM': api/macros/nlohmann_json_serialize_enum.md
+        - 'NLOHMANN_JSON_VERSION_MAJOR': api/macros/nlohmann_json_version_major.md
+        - 'NLOHMANN_JSON_VERSION_MINOR': api/macros/nlohmann_json_version_major.md
+        - 'NLOHMANN_JSON_VERSION_PATCH': api/macros/nlohmann_json_version_major.md
+
+# Extras
+extra:
+  social:
+    - icon: fontawesome/brands/github
+      link: https://github.com/nlohmann
+    - icon: fontawesome/brands/linkedin
+      link: https://www.linkedin.com/in/nielslohmann/
+    - icon: fontawesome/brands/xing
+      link: https://www.xing.com/profile/Niels_Lohmann
+    - icon: fontawesome/brands/paypal
+      link: https://www.paypal.me/nlohmann
+  generator: false
+
+# Extensions
+markdown_extensions:
+  - abbr
+  - admonition
+  - attr_list
+  - def_list
+  - codehilite:
+      guess_lang: false
+  - toc:
+      permalink: true
+  - pymdownx.arithmatex
+  - pymdownx.betterem:
+      smart_enable: all
+  - pymdownx.caret
+  - pymdownx.critic
+  - pymdownx.details
+  - pymdownx.emoji:
+      emoji_index: !!python/name:material.extensions.emoji.twemoji
+      emoji_generator: !!python/name:material.extensions.emoji.to_svg
+  - pymdownx.inlinehilite
+  - pymdownx.magiclink
+  - pymdownx.mark
+  #- pymdownx.smartsymbols
+  - pymdownx.superfences:
+      custom_fences:
+        - name: mermaid
+          class: mermaid
+          format: !!python/name:pymdownx.superfences.fence_code_format
+  - pymdownx.tasklist:
+      custom_checkbox: true
+  - pymdownx.tabbed:
+      alternate_style: true
+  - pymdownx.tilde
+  - pymdownx.snippets:
+      base_path: docs
+      check_paths: true
+
+plugins:
+  - search:
+      separator: '[\s\-\.]'
+      lang: en
+  - minify:
+      minify_html: true
+  - git-revision-date-localized
+  - redirects:
+      redirect_maps:
+          'api/basic_json/operator_gtgt.md': api/operator_gtgt.md
+          'api/basic_json/operator_ltlt.md': api/operator_ltlt.md
+          'api/basic_json/operator_literal_json.md': api/operator_literal_json.md
+          'api/basic_json/operator_literal_json_pointer.md': api/operator_literal_json_pointer.md
+          'api/json_pointer/operator_string.md': api/json_pointer/operator_string_t.md
+
+extra_css:
+    - css/custom.css
+
+extra_javascript:
+  - https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-MML-AM_CHTML
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/requirements.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/requirements.txt
new file mode 100644
index 00000000..45aa14ab
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/requirements.txt
@@ -0,0 +1,6 @@
+mkdocs==1.6.1                                       # documentation framework
+mkdocs-git-revision-date-localized-plugin==1.3.0    # plugin "git-revision-date-localized"
+mkdocs-material==9.5.49                             # theme for mkdocs
+mkdocs-material-extensions==1.3.1                   # extensions
+mkdocs-minify-plugin==0.8.0                         # plugin "minify"
+mkdocs-redirects==1.2.2                             # plugin "redirects"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/scripts/check_structure.py b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/scripts/check_structure.py
new file mode 100644
index 00000000..643482af
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/mkdocs/scripts/check_structure.py
@@ -0,0 +1,179 @@
+#!/usr/bin/env python
+
+import glob
+import os.path
+import re
+import sys
+
+warnings = 0
+
+
+def report(rule, location, description):
+    global warnings
+    warnings += 1
+    print(f'{warnings:3}. {location}:  {description} [{rule}]')
+
+
+def check_structure():
+    expected_sections = [
+        'Template parameters',
+        'Specializations',
+        'Iterator invalidation',
+        'Requirements',
+        'Member types',
+        'Member functions',
+        'Member variables',
+        'Static functions',
+        'Non-member functions',
+        'Literals',
+        'Helper classes',
+        'Parameters',
+        'Return value',
+        'Exception safety',
+        'Exceptions',
+        'Complexity',
+        'Possible implementation',
+        'Default definition',
+        'Notes',
+        'Examples',
+        'See also',
+        'Version history'
+    ]
+
+    required_sections = [
+        'Examples',
+        'Version history'
+    ]
+
+    files = sorted(glob.glob('api/**/*.md', recursive=True))
+    for file in files:
+        with open(file) as file_content:
+            section_idx = -1                 # the index of the current h2 section
+            existing_sections = []           # the list of h2 sections in the file
+            in_initial_code_example = False  # whether we are inside the first code example block
+            previous_line = None             # the previous read line
+            h1sections = 0                   # the number of h1 sections in the file
+            last_overload = 0                # the last seen overload number in the code example
+            documented_overloads = {}        # the overloads that have been documented in the current block
+            current_section = None           # the name of the current section
+
+            for lineno, original_line in enumerate(file_content.readlines()):
+                line = original_line.strip()
+
+                if line.startswith('# '):
+                    h1sections += 1
+
+                # there should only be one top-level title
+                if h1sections > 1:
+                    report('structure/unexpected_section', f'{file}:{lineno+1}', f'unexpected top-level title "{line}"')
+                    h1sections = 1
+
+                # Overview pages should have a better title
+                if line == '# Overview':
+                    report('style/title', f'{file}:{lineno+1}', 'overview pages should have a better title than "Overview"')
+
+                # lines longer than 160 characters are bad (unless they are tables)
+                if len(line) > 160 and '|' not in line:
+                    report('whitespace/line_length', f'{file}:{lineno+1} ({current_section})', f'line is too long ({len(line)} vs. 160 chars)')
+
+                # sections in `<!-- NOLINT -->` comments are treated as present
+                if line.startswith('<!-- NOLINT'):
+                    current_section = line.strip('<!-- NOLINT')
+                    current_section = current_section.strip(' -->')
+                    existing_sections.append(current_section)
+
+                # check if sections are correct
+                if line.startswith('## '):
+                    # before starting a new section, check if the previous one documented all overloads
+                    if current_section in documented_overloads and last_overload != 0:
+                        if len(documented_overloads[current_section]) > 0 and len(documented_overloads[current_section]) != last_overload:
+                            expected = list(range(1, last_overload+1))
+                            undocumented = [x for x in expected if x not in documented_overloads[current_section]]
+                            unexpected = [x for x in documented_overloads[current_section] if x not in expected]
+                            if len(undocumented):
+                                report('style/numbering', f'{file}:{lineno} ({current_section})', f'undocumented overloads: {", ".join([f"({x})" for x in undocumented])}')
+                            if len(unexpected):
+                                report('style/numbering', f'{file}:{lineno} ({current_section})', f'unexpected overloads: {", ".join([f"({x})" for x in unexpected])}')
+
+                    current_section = line.strip('## ')
+                    existing_sections.append(current_section)
+
+                    if current_section in expected_sections:
+                        idx = expected_sections.index(current_section)
+                        if idx <= section_idx:
+                            report('structure/section_order', f'{file}:{lineno+1}', f'section "{current_section}" is in an unexpected order (should be before "{expected_sections[section_idx]}")')
+                        section_idx = idx
+                    else:
+                        if 'index.md' not in file:  # index.md files may have a different structure
+                            report('structure/unknown_section', f'{file}:{lineno+1}', f'section "{current_section}" is not part of the expected sections')
+
+                # collect the numbered items of the current section to later check if they match the number of overloads
+                if last_overload != 0 and not in_initial_code_example:
+                    if len(original_line) and original_line[0].isdigit():
+                        number = int(re.findall(r"^(\d+).", original_line)[0])
+                        if current_section not in documented_overloads:
+                            documented_overloads[current_section] = []
+                        documented_overloads[current_section].append(number)
+
+                # code example
+                if line == '```cpp' and section_idx == -1:
+                    in_initial_code_example = True
+
+                if in_initial_code_example and line.startswith('//') and line not in ['// since C++20', '// until C++20']:
+                    # check numbering of overloads
+                    if any(map(str.isdigit, line)):
+                        number = int(re.findall(r'\d+', line)[0])
+                        if number != last_overload + 1:
+                            report('style/numbering', f'{file}:{lineno+1}', f'expected number ({number}) to be ({last_overload +1 })')
+                        last_overload = number
+
+                    if any(map(str.isdigit, line)) and '(' not in line:
+                        report('style/numbering', f'{file}:{lineno+1}', f'number should be in parentheses: {line}')
+
+                if line == '```' and in_initial_code_example:
+                    in_initial_code_example = False
+
+                # consecutive blank lines are bad
+                if line == '' and previous_line == '':
+                    report('whitespace/blank_lines', f'{file}:{lineno}-{lineno+1} ({current_section})', 'consecutive blank lines')
+
+                # check that non-example admonitions have titles
+                untitled_admonition = re.match(r'^(\?\?\?|!!!) ([^ ]+)$', line)
+                if untitled_admonition and untitled_admonition.group(2) != 'example':
+                    report('style/admonition_title', f'{file}:{lineno} ({current_section})', f'"{untitled_admonition.group(2)}" admonitions should have a title')
+
+                previous_line = line
+
+            if 'index.md' not in file:  # index.md files may have a different structure
+                for required_section in required_sections:
+                    if required_section not in existing_sections:
+                        report('structure/missing_section', f'{file}:{lineno+1}', f'required section "{required_section}" was not found')
+
+
+def check_examples():
+    example_files = sorted(glob.glob('../../examples/*.cpp'))
+    markdown_files = sorted(glob.glob('**/*.md', recursive=True))
+
+    # check if every example file is used in at least one markdown file
+    for example_file in example_files:
+        example_file = os.path.join('examples', os.path.basename(example_file))
+
+        found = False
+        for markdown_file in markdown_files:
+            content = ' '.join(open(markdown_file).readlines())
+            if example_file in content:
+                found = True
+                break
+
+        if not found:
+            report('examples/missing', f'{example_file}', 'example file is not used in any documentation file')
+
+
+if __name__ == '__main__':
+    print(120 * '-')
+    check_structure()
+    check_examples()
+    print(120 * '-')
+
+    if warnings > 0:
+        sys.exit(1)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/usages/ios.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/usages/ios.png
new file mode 100644
index 00000000..1d2c1b80
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/usages/ios.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/usages/macos.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/usages/macos.png
new file mode 100644
index 00000000..107b5f07
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/docs/usages/macos.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/adl_serializer.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/adl_serializer.hpp
new file mode 100644
index 00000000..a441ad4d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/adl_serializer.hpp
@@ -0,0 +1,55 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <utility>
+
+#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/conversions/from_json.hpp>
+#include <nlohmann/detail/conversions/to_json.hpp>
+#include <nlohmann/detail/meta/identity_tag.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @sa https://json.nlohmann.me/api/adl_serializer/
+template<typename ValueType, typename>
+struct adl_serializer
+{
+    /// @brief convert a JSON value to any value type
+    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto from_json(BasicJsonType && j, TargetType& val) noexcept(
+        noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
+    {
+        ::nlohmann::from_json(std::forward<BasicJsonType>(j), val);
+    }
+
+    /// @brief convert a JSON value to any value type
+    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto from_json(BasicJsonType && j) noexcept(
+    noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {})))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {}))
+    {
+        return ::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {});
+    }
+
+    /// @brief convert any value type to a JSON value
+    /// @sa https://json.nlohmann.me/api/adl_serializer/to_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto to_json(BasicJsonType& j, TargetType && val) noexcept(
+        noexcept(::nlohmann::to_json(j, std::forward<TargetType>(val))))
+    -> decltype(::nlohmann::to_json(j, std::forward<TargetType>(val)), void())
+    {
+        ::nlohmann::to_json(j, std::forward<TargetType>(val));
+    }
+};
+
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/byte_container_with_subtype.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/byte_container_with_subtype.hpp
new file mode 100644
index 00000000..08ac658c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/byte_container_with_subtype.hpp
@@ -0,0 +1,103 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstdint> // uint8_t, uint64_t
+#include <tuple> // tie
+#include <utility> // move
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @brief an internal type for a backed binary type
+/// @sa https://json.nlohmann.me/api/byte_container_with_subtype/
+template<typename BinaryType>
+class byte_container_with_subtype : public BinaryType
+{
+  public:
+    using container_type = BinaryType;
+    using subtype_type = std::uint64_t;
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype() noexcept(noexcept(container_type()))
+        : container_type()
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(const container_type& b) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(container_type&& b) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(const container_type& b, subtype_type subtype_) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+        , m_subtype(subtype_)
+        , m_has_subtype(true)
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(container_type&& b, subtype_type subtype_) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+        , m_subtype(subtype_)
+        , m_has_subtype(true)
+    {}
+
+    bool operator==(const byte_container_with_subtype& rhs) const
+    {
+        return std::tie(static_cast<const BinaryType&>(*this), m_subtype, m_has_subtype) ==
+               std::tie(static_cast<const BinaryType&>(rhs), rhs.m_subtype, rhs.m_has_subtype);
+    }
+
+    bool operator!=(const byte_container_with_subtype& rhs) const
+    {
+        return !(rhs == *this);
+    }
+
+    /// @brief sets the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/set_subtype/
+    void set_subtype(subtype_type subtype_) noexcept
+    {
+        m_subtype = subtype_;
+        m_has_subtype = true;
+    }
+
+    /// @brief return the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/subtype/
+    constexpr subtype_type subtype() const noexcept
+    {
+        return m_has_subtype ? m_subtype : static_cast<subtype_type>(-1);
+    }
+
+    /// @brief return whether the value has a subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/has_subtype/
+    constexpr bool has_subtype() const noexcept
+    {
+        return m_has_subtype;
+    }
+
+    /// @brief clears the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/clear_subtype/
+    void clear_subtype() noexcept
+    {
+        m_subtype = 0;
+        m_has_subtype = false;
+    }
+
+  private:
+    subtype_type m_subtype = 0;
+    bool m_has_subtype = false;
+};
+
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/abi_macros.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/abi_macros.hpp
new file mode 100644
index 00000000..baa2762d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/abi_macros.hpp
@@ -0,0 +1,111 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+// This file contains all macro definitions affecting or depending on the ABI
+
+#ifndef JSON_SKIP_LIBRARY_VERSION_CHECK
+    #if defined(NLOHMANN_JSON_VERSION_MAJOR) && defined(NLOHMANN_JSON_VERSION_MINOR) && defined(NLOHMANN_JSON_VERSION_PATCH)
+        #if NLOHMANN_JSON_VERSION_MAJOR != 3 || NLOHMANN_JSON_VERSION_MINOR != 11 || NLOHMANN_JSON_VERSION_PATCH != 3
+            #warning "Already included a different version of the library!"
+        #endif
+    #endif
+#endif
+
+#define NLOHMANN_JSON_VERSION_MAJOR 3   // NOLINT(modernize-macro-to-enum)
+#define NLOHMANN_JSON_VERSION_MINOR 11  // NOLINT(modernize-macro-to-enum)
+#define NLOHMANN_JSON_VERSION_PATCH 3   // NOLINT(modernize-macro-to-enum)
+
+#ifndef JSON_DIAGNOSTICS
+    #define JSON_DIAGNOSTICS 0
+#endif
+
+#ifndef JSON_DIAGNOSTIC_POSITIONS
+    #define JSON_DIAGNOSTIC_POSITIONS 0
+#endif
+
+#ifndef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON 0
+#endif
+
+#if JSON_DIAGNOSTICS
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS _diag
+#else
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS
+#endif
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS _dp
+#else
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS
+#endif
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON _ldvcmp
+#else
+    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_NO_VERSION
+    #define NLOHMANN_JSON_NAMESPACE_NO_VERSION 0
+#endif
+
+// Construct the namespace ABI tags component
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b, c) json_abi ## a ## b ## c
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b, c) \
+    NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b, c)
+
+#define NLOHMANN_JSON_ABI_TAGS                                       \
+    NLOHMANN_JSON_ABI_TAGS_CONCAT(                                   \
+            NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS,                       \
+            NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON, \
+            NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS)
+
+// Construct the namespace version component
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) \
+    _v ## major ## _ ## minor ## _ ## patch
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) \
+    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
+
+#if NLOHMANN_JSON_NAMESPACE_NO_VERSION
+#define NLOHMANN_JSON_NAMESPACE_VERSION
+#else
+#define NLOHMANN_JSON_NAMESPACE_VERSION                                 \
+    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, \
+                                           NLOHMANN_JSON_VERSION_MINOR, \
+                                           NLOHMANN_JSON_VERSION_PATCH)
+#endif
+
+// Combine namespace components
+#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a ## b
+#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) \
+    NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
+
+#ifndef NLOHMANN_JSON_NAMESPACE
+#define NLOHMANN_JSON_NAMESPACE               \
+    nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT( \
+            NLOHMANN_JSON_ABI_TAGS,           \
+            NLOHMANN_JSON_NAMESPACE_VERSION)
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_BEGIN
+#define NLOHMANN_JSON_NAMESPACE_BEGIN                \
+    namespace nlohmann                               \
+    {                                                \
+    inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT( \
+                NLOHMANN_JSON_ABI_TAGS,              \
+                NLOHMANN_JSON_NAMESPACE_VERSION)     \
+    {
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_END
+#define NLOHMANN_JSON_NAMESPACE_END                                     \
+    }  /* namespace (inline namespace) NOLINT(readability/namespace) */ \
+    }  // namespace nlohmann
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/from_json.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/from_json.hpp
new file mode 100644
index 00000000..06dd73a0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/from_json.hpp
@@ -0,0 +1,567 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <algorithm> // transform
+#include <array> // array
+#include <forward_list> // forward_list
+#include <iterator> // inserter, front_inserter, end
+#include <map> // map
+#ifdef JSON_HAS_CPP_17
+    #include <optional> // optional
+#endif
+#include <string> // string
+#include <tuple> // tuple, make_tuple
+#include <type_traits> // is_arithmetic, is_same, is_enum, underlying_type, is_convertible
+#include <unordered_map> // unordered_map
+#include <utility> // pair, declval
+#include <valarray> // valarray
+
+
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/meta/identity_tag.hpp>
+#include <nlohmann/detail/meta/std_fs.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_null()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be null, but is ", j.type_name()), &j));
+    }
+    n = nullptr;
+}
+
+#ifdef JSON_HAS_CPP_17
+#ifndef JSON_USE_IMPLICIT_CONVERSIONS
+template<typename BasicJsonType, typename T>
+void from_json(const BasicJsonType& j, std::optional<T>& opt)
+{
+    if (j.is_null())
+    {
+        opt = std::nullopt;
+    }
+    else
+    {
+        opt.emplace(j.template get<T>());
+    }
+}
+
+#endif // JSON_USE_IMPLICIT_CONVERSIONS
+#endif // JSON_HAS_CPP_17
+
+// overloads for basic_json template parameters
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t < std::is_arithmetic<ArithmeticType>::value&&
+                         !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+                         int > = 0 >
+void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+
+        case value_t::null:
+        case value_t::object:
+        case value_t::array:
+        case value_t::string:
+        case value_t::boolean:
+        case value_t::binary:
+        case value_t::discarded:
+        default:
+            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
+    }
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::boolean_t& b)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_boolean()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be boolean, but is ", j.type_name()), &j));
+    }
+    b = *j.template get_ptr<const typename BasicJsonType::boolean_t*>();
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::string_t& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template <
+    typename BasicJsonType, typename StringType,
+    enable_if_t <
+        std::is_assignable<StringType&, const typename BasicJsonType::string_t>::value
+        && is_detected_exact<typename BasicJsonType::string_t::value_type, value_type_t, StringType>::value
+        && !std::is_same<typename BasicJsonType::string_t, StringType>::value
+        && !is_json_ref<StringType>::value, int > = 0 >
+inline void from_json(const BasicJsonType& j, StringType& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_float_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_unsigned_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_integer_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+#if !JSON_DISABLE_ENUM_SERIALIZATION
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, EnumType& e)
+{
+    typename std::underlying_type<EnumType>::type val;
+    get_arithmetic_value(j, val);
+    e = static_cast<EnumType>(val);
+}
+#endif  // JSON_DISABLE_ENUM_SERIALIZATION
+
+// forward_list doesn't have an insert method
+template<typename BasicJsonType, typename T, typename Allocator,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    l.clear();
+    std::transform(j.rbegin(), j.rend(),
+                   std::front_inserter(l), [](const BasicJsonType & i)
+    {
+        return i.template get<T>();
+    });
+}
+
+// valarray doesn't have an insert method
+template<typename BasicJsonType, typename T,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, std::valarray<T>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    l.resize(j.size());
+    std::transform(j.begin(), j.end(), std::begin(l),
+                   [](const BasicJsonType & elem)
+    {
+        return elem.template get<T>();
+    });
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json(const BasicJsonType& j, T (&arr)[N])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType, typename T, std::size_t N1, std::size_t N2>
+auto from_json(const BasicJsonType& j, T (&arr)[N1][N2])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i1 = 0; i1 < N1; ++i1)
+    {
+        for (std::size_t i2 = 0; i2 < N2; ++i2)
+        {
+            arr[i1][i2] = j.at(i1).at(i2).template get<T>();
+        }
+    }
+}
+
+template<typename BasicJsonType, typename T, std::size_t N1, std::size_t N2, std::size_t N3>
+auto from_json(const BasicJsonType& j, T (&arr)[N1][N2][N3])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i1 = 0; i1 < N1; ++i1)
+    {
+        for (std::size_t i2 = 0; i2 < N2; ++i2)
+        {
+            for (std::size_t i3 = 0; i3 < N3; ++i3)
+            {
+                arr[i1][i2][i3] = j.at(i1).at(i2).at(i3).template get<T>();
+            }
+        }
+    }
+}
+
+template<typename BasicJsonType, typename T, std::size_t N1, std::size_t N2, std::size_t N3, std::size_t N4>
+auto from_json(const BasicJsonType& j, T (&arr)[N1][N2][N3][N4])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i1 = 0; i1 < N1; ++i1)
+    {
+        for (std::size_t i2 = 0; i2 < N2; ++i2)
+        {
+            for (std::size_t i3 = 0; i3 < N3; ++i3)
+            {
+                for (std::size_t i4 = 0; i4 < N4; ++i4)
+                {
+                    arr[i1][i2][i3][i4] = j.at(i1).at(i2).at(i3).at(i4).template get<T>();
+                }
+            }
+        }
+    }
+}
+
+template<typename BasicJsonType>
+inline void from_json_array_impl(const BasicJsonType& j, typename BasicJsonType::array_t& arr, priority_tag<3> /*unused*/)
+{
+    arr = *j.template get_ptr<const typename BasicJsonType::array_t*>();
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr,
+                          priority_tag<2> /*unused*/)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType,
+         enable_if_t<
+             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+             int> = 0>
+auto from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, priority_tag<1> /*unused*/)
+-> decltype(
+    arr.reserve(std::declval<typename ConstructibleArrayType::size_type>()),
+    j.template get<typename ConstructibleArrayType::value_type>(),
+    void())
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    ret.reserve(j.size());
+    std::transform(j.begin(), j.end(),
+                   std::inserter(ret, end(ret)), [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType,
+         enable_if_t<
+             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+             int> = 0>
+inline void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr,
+                                 priority_tag<0> /*unused*/)
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    std::transform(
+        j.begin(), j.end(), std::inserter(ret, end(ret)),
+        [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template < typename BasicJsonType, typename ConstructibleArrayType,
+           enable_if_t <
+               is_constructible_array_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_object_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !std::is_same<ConstructibleArrayType, typename BasicJsonType::binary_t>::value&&
+               !is_basic_json<ConstructibleArrayType>::value,
+               int > = 0 >
+auto from_json(const BasicJsonType& j, ConstructibleArrayType& arr)
+-> decltype(from_json_array_impl(j, arr, priority_tag<3> {}),
+j.template get<typename ConstructibleArrayType::value_type>(),
+void())
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    from_json_array_impl(j, arr, priority_tag<3> {});
+}
+
+template < typename BasicJsonType, typename T, std::size_t... Idx >
+std::array<T, sizeof...(Idx)> from_json_inplace_array_impl(BasicJsonType&& j,
+        identity_tag<std::array<T, sizeof...(Idx)>> /*unused*/, index_sequence<Idx...> /*unused*/)
+{
+    return { { std::forward<BasicJsonType>(j).at(Idx).template get<T>()... } };
+}
+
+template < typename BasicJsonType, typename T, std::size_t N >
+auto from_json(BasicJsonType&& j, identity_tag<std::array<T, N>> tag)
+-> decltype(from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {}))
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    return from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {});
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::binary_t& bin)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_binary()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be binary, but is ", j.type_name()), &j));
+    }
+
+    bin = *j.template get_ptr<const typename BasicJsonType::binary_t*>();
+}
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         enable_if_t<is_constructible_object_type<BasicJsonType, ConstructibleObjectType>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be object, but is ", j.type_name()), &j));
+    }
+
+    ConstructibleObjectType ret;
+    const auto* inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
+    using value_type = typename ConstructibleObjectType::value_type;
+    std::transform(
+        inner_object->begin(), inner_object->end(),
+        std::inserter(ret, ret.begin()),
+        [](typename BasicJsonType::object_t::value_type const & p)
+    {
+        return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
+    });
+    obj = std::move(ret);
+}
+
+// overload for arithmetic types, not chosen for basic_json template arguments
+// (BooleanType, etc..); note: Is it really necessary to provide explicit
+// overloads for boolean_t etc. in case of a custom BooleanType which is not
+// an arithmetic type?
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t <
+               std::is_arithmetic<ArithmeticType>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_unsigned_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_integer_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_float_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+               int > = 0 >
+inline void from_json(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+        case value_t::boolean:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::boolean_t*>());
+            break;
+        }
+
+        case value_t::null:
+        case value_t::object:
+        case value_t::array:
+        case value_t::string:
+        case value_t::binary:
+        case value_t::discarded:
+        default:
+            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
+    }
+}
+
+template<typename BasicJsonType, typename... Args, std::size_t... Idx>
+std::tuple<Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+{
+    return std::make_tuple(std::forward<BasicJsonType>(j).at(Idx).template get<Args>()...);
+}
+
+template < typename BasicJsonType, class A1, class A2 >
+std::pair<A1, A2> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::pair<A1, A2>> /*unused*/, priority_tag<0> /*unused*/)
+{
+    return {std::forward<BasicJsonType>(j).at(0).template get<A1>(),
+            std::forward<BasicJsonType>(j).at(1).template get<A2>()};
+}
+
+template<typename BasicJsonType, typename A1, typename A2>
+inline void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priority_tag<1> /*unused*/)
+{
+    p = from_json_tuple_impl(std::forward<BasicJsonType>(j), identity_tag<std::pair<A1, A2>> {}, priority_tag<0> {});
+}
+
+template<typename BasicJsonType, typename... Args>
+std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
+{
+    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+}
+
+template<typename BasicJsonType, typename... Args>
+inline void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
+{
+    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+}
+
+template<typename BasicJsonType, typename TupleRelated>
+auto from_json(BasicJsonType&& j, TupleRelated&& t)
+-> decltype(from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {}))
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    return from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {});
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Compare, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+inline void from_json(const BasicJsonType& j, std::map<Key, Value, Compare, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &j));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Hash, typename KeyEqual, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+inline void from_json(const BasicJsonType& j, std::unordered_map<Key, Value, Hash, KeyEqual, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &j));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, std_fs::path& p)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+    p = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+#endif
+
+struct from_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(const BasicJsonType& j, T&& val) const
+    noexcept(noexcept(from_json(j, std::forward<T>(val))))
+    -> decltype(from_json(j, std::forward<T>(val)))
+    {
+        return from_json(j, std::forward<T>(val));
+    }
+};
+
+}  // namespace detail
+
+#ifndef JSON_HAS_CPP_17
+/// namespace to hold default `from_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+{
+#endif
+JSON_INLINE_VARIABLE constexpr const auto& from_json = // NOLINT(misc-definitions-in-headers)
+    detail::static_const<detail::from_json_fn>::value;
+#ifndef JSON_HAS_CPP_17
+}  // namespace
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/to_chars.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/to_chars.hpp
new file mode 100644
index 00000000..b6514d12
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/to_chars.hpp
@@ -0,0 +1,1118 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2009 Florian Loitsch <https://florian.loitsch.com/>
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <array> // array
+#include <cmath>   // signbit, isfinite
+#include <cstdint> // intN_t, uintN_t
+#include <cstring> // memcpy, memmove
+#include <limits> // numeric_limits
+#include <type_traits> // conditional
+
+#include <nlohmann/detail/macro_scope.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief implements the Grisu2 algorithm for binary to decimal floating-point
+conversion.
+
+This implementation is a slightly modified version of the reference
+implementation which may be obtained from
+http://florian.loitsch.com/publications (bench.tar.gz).
+
+The code is distributed under the MIT license, Copyright (c) 2009 Florian Loitsch.
+
+For a detailed description of the algorithm see:
+
+[1] Loitsch, "Printing Floating-Point Numbers Quickly and Accurately with
+    Integers", Proceedings of the ACM SIGPLAN 2010 Conference on Programming
+    Language Design and Implementation, PLDI 2010
+[2] Burger, Dybvig, "Printing Floating-Point Numbers Quickly and Accurately",
+    Proceedings of the ACM SIGPLAN 1996 Conference on Programming Language
+    Design and Implementation, PLDI 1996
+*/
+namespace dtoa_impl
+{
+
+template<typename Target, typename Source>
+Target reinterpret_bits(const Source source)
+{
+    static_assert(sizeof(Target) == sizeof(Source), "size mismatch");
+
+    Target target;
+    std::memcpy(&target, &source, sizeof(Source));
+    return target;
+}
+
+struct diyfp // f * 2^e
+{
+    static constexpr int kPrecision = 64; // = q
+
+    std::uint64_t f = 0;
+    int e = 0;
+
+    constexpr diyfp(std::uint64_t f_, int e_) noexcept : f(f_), e(e_) {}
+
+    /*!
+    @brief returns x - y
+    @pre x.e == y.e and x.f >= y.f
+    */
+    static diyfp sub(const diyfp& x, const diyfp& y) noexcept
+    {
+        JSON_ASSERT(x.e == y.e);
+        JSON_ASSERT(x.f >= y.f);
+
+        return {x.f - y.f, x.e};
+    }
+
+    /*!
+    @brief returns x * y
+    @note The result is rounded. (Only the upper q bits are returned.)
+    */
+    static diyfp mul(const diyfp& x, const diyfp& y) noexcept
+    {
+        static_assert(kPrecision == 64, "internal error");
+
+        // Computes:
+        //  f = round((x.f * y.f) / 2^q)
+        //  e = x.e + y.e + q
+
+        // Emulate the 64-bit * 64-bit multiplication:
+        //
+        // p = u * v
+        //   = (u_lo + 2^32 u_hi) (v_lo + 2^32 v_hi)
+        //   = (u_lo v_lo         ) + 2^32 ((u_lo v_hi         ) + (u_hi v_lo         )) + 2^64 (u_hi v_hi         )
+        //   = (p0                ) + 2^32 ((p1                ) + (p2                )) + 2^64 (p3                )
+        //   = (p0_lo + 2^32 p0_hi) + 2^32 ((p1_lo + 2^32 p1_hi) + (p2_lo + 2^32 p2_hi)) + 2^64 (p3                )
+        //   = (p0_lo             ) + 2^32 (p0_hi + p1_lo + p2_lo                      ) + 2^64 (p1_hi + p2_hi + p3)
+        //   = (p0_lo             ) + 2^32 (Q                                          ) + 2^64 (H                 )
+        //   = (p0_lo             ) + 2^32 (Q_lo + 2^32 Q_hi                           ) + 2^64 (H                 )
+        //
+        // (Since Q might be larger than 2^32 - 1)
+        //
+        //   = (p0_lo + 2^32 Q_lo) + 2^64 (Q_hi + H)
+        //
+        // (Q_hi + H does not overflow a 64-bit int)
+        //
+        //   = p_lo + 2^64 p_hi
+
+        const std::uint64_t u_lo = x.f & 0xFFFFFFFFu;
+        const std::uint64_t u_hi = x.f >> 32u;
+        const std::uint64_t v_lo = y.f & 0xFFFFFFFFu;
+        const std::uint64_t v_hi = y.f >> 32u;
+
+        const std::uint64_t p0 = u_lo * v_lo;
+        const std::uint64_t p1 = u_lo * v_hi;
+        const std::uint64_t p2 = u_hi * v_lo;
+        const std::uint64_t p3 = u_hi * v_hi;
+
+        const std::uint64_t p0_hi = p0 >> 32u;
+        const std::uint64_t p1_lo = p1 & 0xFFFFFFFFu;
+        const std::uint64_t p1_hi = p1 >> 32u;
+        const std::uint64_t p2_lo = p2 & 0xFFFFFFFFu;
+        const std::uint64_t p2_hi = p2 >> 32u;
+
+        std::uint64_t Q = p0_hi + p1_lo + p2_lo;
+
+        // The full product might now be computed as
+        //
+        // p_hi = p3 + p2_hi + p1_hi + (Q >> 32)
+        // p_lo = p0_lo + (Q << 32)
+        //
+        // But in this particular case here, the full p_lo is not required.
+        // Effectively we only need to add the highest bit in p_lo to p_hi (and
+        // Q_hi + 1 does not overflow).
+
+        Q += std::uint64_t{1} << (64u - 32u - 1u); // round, ties up
+
+        const std::uint64_t h = p3 + p2_hi + p1_hi + (Q >> 32u);
+
+        return {h, x.e + y.e + 64};
+    }
+
+    /*!
+    @brief normalize x such that the significand is >= 2^(q-1)
+    @pre x.f != 0
+    */
+    static diyfp normalize(diyfp x) noexcept
+    {
+        JSON_ASSERT(x.f != 0);
+
+        while ((x.f >> 63u) == 0)
+        {
+            x.f <<= 1u;
+            x.e--;
+        }
+
+        return x;
+    }
+
+    /*!
+    @brief normalize x such that the result has the exponent E
+    @pre e >= x.e and the upper e - x.e bits of x.f must be zero.
+    */
+    static diyfp normalize_to(const diyfp& x, const int target_exponent) noexcept
+    {
+        const int delta = x.e - target_exponent;
+
+        JSON_ASSERT(delta >= 0);
+        JSON_ASSERT(((x.f << delta) >> delta) == x.f);
+
+        return {x.f << delta, target_exponent};
+    }
+};
+
+struct boundaries
+{
+    diyfp w;
+    diyfp minus;
+    diyfp plus;
+};
+
+/*!
+Compute the (normalized) diyfp representing the input number 'value' and its
+boundaries.
+
+@pre value must be finite and positive
+*/
+template<typename FloatType>
+boundaries compute_boundaries(FloatType value)
+{
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // Convert the IEEE representation into a diyfp.
+    //
+    // If v is denormal:
+    //      value = 0.F * 2^(1 - bias) = (          F) * 2^(1 - bias - (p-1))
+    // If v is normalized:
+    //      value = 1.F * 2^(E - bias) = (2^(p-1) + F) * 2^(E - bias - (p-1))
+
+    static_assert(std::numeric_limits<FloatType>::is_iec559,
+                  "internal error: dtoa_short requires an IEEE-754 floating-point implementation");
+
+    constexpr int      kPrecision = std::numeric_limits<FloatType>::digits; // = p (includes the hidden bit)
+    constexpr int      kBias      = std::numeric_limits<FloatType>::max_exponent - 1 + (kPrecision - 1);
+    constexpr int      kMinExp    = 1 - kBias;
+    constexpr std::uint64_t kHiddenBit = std::uint64_t{1} << (kPrecision - 1); // = 2^(p-1)
+
+    using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t >::type;
+
+    const auto bits = static_cast<std::uint64_t>(reinterpret_bits<bits_type>(value));
+    const std::uint64_t E = bits >> (kPrecision - 1);
+    const std::uint64_t F = bits & (kHiddenBit - 1);
+
+    const bool is_denormal = E == 0;
+    const diyfp v = is_denormal
+                    ? diyfp(F, kMinExp)
+                    : diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
+
+    // Compute the boundaries m- and m+ of the floating-point value
+    // v = f * 2^e.
+    //
+    // Determine v- and v+, the floating-point predecessor and successor if v,
+    // respectively.
+    //
+    //      v- = v - 2^e        if f != 2^(p-1) or e == e_min                (A)
+    //         = v - 2^(e-1)    if f == 2^(p-1) and e > e_min                (B)
+    //
+    //      v+ = v + 2^e
+    //
+    // Let m- = (v- + v) / 2 and m+ = (v + v+) / 2. All real numbers _strictly_
+    // between m- and m+ round to v, regardless of how the input rounding
+    // algorithm breaks ties.
+    //
+    //      ---+-------------+-------------+-------------+-------------+---  (A)
+    //         v-            m-            v             m+            v+
+    //
+    //      -----------------+------+------+-------------+-------------+---  (B)
+    //                       v-     m-     v             m+            v+
+
+    const bool lower_boundary_is_closer = F == 0 && E > 1;
+    const diyfp m_plus = diyfp((2 * v.f) + 1, v.e - 1);
+    const diyfp m_minus = lower_boundary_is_closer
+                          ? diyfp((4 * v.f) - 1, v.e - 2)  // (B)
+                          : diyfp((2 * v.f) - 1, v.e - 1); // (A)
+
+    // Determine the normalized w+ = m+.
+    const diyfp w_plus = diyfp::normalize(m_plus);
+
+    // Determine w- = m- such that e_(w-) = e_(w+).
+    const diyfp w_minus = diyfp::normalize_to(m_minus, w_plus.e);
+
+    return {diyfp::normalize(v), w_minus, w_plus};
+}
+
+// Given normalized diyfp w, Grisu needs to find a (normalized) cached
+// power-of-ten c, such that the exponent of the product c * w = f * 2^e lies
+// within a certain range [alpha, gamma] (Definition 3.2 from [1])
+//
+//      alpha <= e = e_c + e_w + q <= gamma
+//
+// or
+//
+//      f_c * f_w * 2^alpha <= f_c 2^(e_c) * f_w 2^(e_w) * 2^q
+//                          <= f_c * f_w * 2^gamma
+//
+// Since c and w are normalized, i.e. 2^(q-1) <= f < 2^q, this implies
+//
+//      2^(q-1) * 2^(q-1) * 2^alpha <= c * w * 2^q < 2^q * 2^q * 2^gamma
+//
+// or
+//
+//      2^(q - 2 + alpha) <= c * w < 2^(q + gamma)
+//
+// The choice of (alpha,gamma) determines the size of the table and the form of
+// the digit generation procedure. Using (alpha,gamma)=(-60,-32) works out well
+// in practice:
+//
+// The idea is to cut the number c * w = f * 2^e into two parts, which can be
+// processed independently: An integral part p1, and a fractional part p2:
+//
+//      f * 2^e = ( (f div 2^-e) * 2^-e + (f mod 2^-e) ) * 2^e
+//              = (f div 2^-e) + (f mod 2^-e) * 2^e
+//              = p1 + p2 * 2^e
+//
+// The conversion of p1 into decimal form requires a series of divisions and
+// modulos by (a power of) 10. These operations are faster for 32-bit than for
+// 64-bit integers, so p1 should ideally fit into a 32-bit integer. This can be
+// achieved by choosing
+//
+//      -e >= 32   or   e <= -32 := gamma
+//
+// In order to convert the fractional part
+//
+//      p2 * 2^e = p2 / 2^-e = d[-1] / 10^1 + d[-2] / 10^2 + ...
+//
+// into decimal form, the fraction is repeatedly multiplied by 10 and the digits
+// d[-i] are extracted in order:
+//
+//      (10 * p2) div 2^-e = d[-1]
+//      (10 * p2) mod 2^-e = d[-2] / 10^1 + ...
+//
+// The multiplication by 10 must not overflow. It is sufficient to choose
+//
+//      10 * p2 < 16 * p2 = 2^4 * p2 <= 2^64.
+//
+// Since p2 = f mod 2^-e < 2^-e,
+//
+//      -e <= 60   or   e >= -60 := alpha
+
+constexpr int kAlpha = -60;
+constexpr int kGamma = -32;
+
+struct cached_power // c = f * 2^e ~= 10^k
+{
+    std::uint64_t f;
+    int e;
+    int k;
+};
+
+/*!
+For a normalized diyfp w = f * 2^e, this function returns a (normalized) cached
+power-of-ten c = f_c * 2^e_c, such that the exponent of the product w * c
+satisfies (Definition 3.2 from [1])
+
+     alpha <= e_c + e + q <= gamma.
+*/
+inline cached_power get_cached_power_for_binary_exponent(int e)
+{
+    // Now
+    //
+    //      alpha <= e_c + e + q <= gamma                                    (1)
+    //      ==> f_c * 2^alpha <= c * 2^e * 2^q
+    //
+    // and since the c's are normalized, 2^(q-1) <= f_c,
+    //
+    //      ==> 2^(q - 1 + alpha) <= c * 2^(e + q)
+    //      ==> 2^(alpha - e - 1) <= c
+    //
+    // If c were an exact power of ten, i.e. c = 10^k, one may determine k as
+    //
+    //      k = ceil( log_10( 2^(alpha - e - 1) ) )
+    //        = ceil( (alpha - e - 1) * log_10(2) )
+    //
+    // From the paper:
+    // "In theory the result of the procedure could be wrong since c is rounded,
+    //  and the computation itself is approximated [...]. In practice, however,
+    //  this simple function is sufficient."
+    //
+    // For IEEE double precision floating-point numbers converted into
+    // normalized diyfp's w = f * 2^e, with q = 64,
+    //
+    //      e >= -1022      (min IEEE exponent)
+    //           -52        (p - 1)
+    //           -52        (p - 1, possibly normalize denormal IEEE numbers)
+    //           -11        (normalize the diyfp)
+    //         = -1137
+    //
+    // and
+    //
+    //      e <= +1023      (max IEEE exponent)
+    //           -52        (p - 1)
+    //           -11        (normalize the diyfp)
+    //         = 960
+    //
+    // This binary exponent range [-1137,960] results in a decimal exponent
+    // range [-307,324]. One does not need to store a cached power for each
+    // k in this range. For each such k it suffices to find a cached power
+    // such that the exponent of the product lies in [alpha,gamma].
+    // This implies that the difference of the decimal exponents of adjacent
+    // table entries must be less than or equal to
+    //
+    //      floor( (gamma - alpha) * log_10(2) ) = 8.
+    //
+    // (A smaller distance gamma-alpha would require a larger table.)
+
+    // NB:
+    // Actually this function returns c, such that -60 <= e_c + e + 64 <= -34.
+
+    constexpr int kCachedPowersMinDecExp = -300;
+    constexpr int kCachedPowersDecStep = 8;
+
+    static constexpr std::array<cached_power, 79> kCachedPowers =
+    {
+        {
+            { 0xAB70FE17C79AC6CA, -1060, -300 },
+            { 0xFF77B1FCBEBCDC4F, -1034, -292 },
+            { 0xBE5691EF416BD60C, -1007, -284 },
+            { 0x8DD01FAD907FFC3C,  -980, -276 },
+            { 0xD3515C2831559A83,  -954, -268 },
+            { 0x9D71AC8FADA6C9B5,  -927, -260 },
+            { 0xEA9C227723EE8BCB,  -901, -252 },
+            { 0xAECC49914078536D,  -874, -244 },
+            { 0x823C12795DB6CE57,  -847, -236 },
+            { 0xC21094364DFB5637,  -821, -228 },
+            { 0x9096EA6F3848984F,  -794, -220 },
+            { 0xD77485CB25823AC7,  -768, -212 },
+            { 0xA086CFCD97BF97F4,  -741, -204 },
+            { 0xEF340A98172AACE5,  -715, -196 },
+            { 0xB23867FB2A35B28E,  -688, -188 },
+            { 0x84C8D4DFD2C63F3B,  -661, -180 },
+            { 0xC5DD44271AD3CDBA,  -635, -172 },
+            { 0x936B9FCEBB25C996,  -608, -164 },
+            { 0xDBAC6C247D62A584,  -582, -156 },
+            { 0xA3AB66580D5FDAF6,  -555, -148 },
+            { 0xF3E2F893DEC3F126,  -529, -140 },
+            { 0xB5B5ADA8AAFF80B8,  -502, -132 },
+            { 0x87625F056C7C4A8B,  -475, -124 },
+            { 0xC9BCFF6034C13053,  -449, -116 },
+            { 0x964E858C91BA2655,  -422, -108 },
+            { 0xDFF9772470297EBD,  -396, -100 },
+            { 0xA6DFBD9FB8E5B88F,  -369,  -92 },
+            { 0xF8A95FCF88747D94,  -343,  -84 },
+            { 0xB94470938FA89BCF,  -316,  -76 },
+            { 0x8A08F0F8BF0F156B,  -289,  -68 },
+            { 0xCDB02555653131B6,  -263,  -60 },
+            { 0x993FE2C6D07B7FAC,  -236,  -52 },
+            { 0xE45C10C42A2B3B06,  -210,  -44 },
+            { 0xAA242499697392D3,  -183,  -36 },
+            { 0xFD87B5F28300CA0E,  -157,  -28 },
+            { 0xBCE5086492111AEB,  -130,  -20 },
+            { 0x8CBCCC096F5088CC,  -103,  -12 },
+            { 0xD1B71758E219652C,   -77,   -4 },
+            { 0x9C40000000000000,   -50,    4 },
+            { 0xE8D4A51000000000,   -24,   12 },
+            { 0xAD78EBC5AC620000,     3,   20 },
+            { 0x813F3978F8940984,    30,   28 },
+            { 0xC097CE7BC90715B3,    56,   36 },
+            { 0x8F7E32CE7BEA5C70,    83,   44 },
+            { 0xD5D238A4ABE98068,   109,   52 },
+            { 0x9F4F2726179A2245,   136,   60 },
+            { 0xED63A231D4C4FB27,   162,   68 },
+            { 0xB0DE65388CC8ADA8,   189,   76 },
+            { 0x83C7088E1AAB65DB,   216,   84 },
+            { 0xC45D1DF942711D9A,   242,   92 },
+            { 0x924D692CA61BE758,   269,  100 },
+            { 0xDA01EE641A708DEA,   295,  108 },
+            { 0xA26DA3999AEF774A,   322,  116 },
+            { 0xF209787BB47D6B85,   348,  124 },
+            { 0xB454E4A179DD1877,   375,  132 },
+            { 0x865B86925B9BC5C2,   402,  140 },
+            { 0xC83553C5C8965D3D,   428,  148 },
+            { 0x952AB45CFA97A0B3,   455,  156 },
+            { 0xDE469FBD99A05FE3,   481,  164 },
+            { 0xA59BC234DB398C25,   508,  172 },
+            { 0xF6C69A72A3989F5C,   534,  180 },
+            { 0xB7DCBF5354E9BECE,   561,  188 },
+            { 0x88FCF317F22241E2,   588,  196 },
+            { 0xCC20CE9BD35C78A5,   614,  204 },
+            { 0x98165AF37B2153DF,   641,  212 },
+            { 0xE2A0B5DC971F303A,   667,  220 },
+            { 0xA8D9D1535CE3B396,   694,  228 },
+            { 0xFB9B7CD9A4A7443C,   720,  236 },
+            { 0xBB764C4CA7A44410,   747,  244 },
+            { 0x8BAB8EEFB6409C1A,   774,  252 },
+            { 0xD01FEF10A657842C,   800,  260 },
+            { 0x9B10A4E5E9913129,   827,  268 },
+            { 0xE7109BFBA19C0C9D,   853,  276 },
+            { 0xAC2820D9623BF429,   880,  284 },
+            { 0x80444B5E7AA7CF85,   907,  292 },
+            { 0xBF21E44003ACDD2D,   933,  300 },
+            { 0x8E679C2F5E44FF8F,   960,  308 },
+            { 0xD433179D9C8CB841,   986,  316 },
+            { 0x9E19DB92B4E31BA9,  1013,  324 },
+        }
+    };
+
+    // This computation gives exactly the same results for k as
+    //      k = ceil((kAlpha - e - 1) * 0.30102999566398114)
+    // for |e| <= 1500, but doesn't require floating-point operations.
+    // NB: log_10(2) ~= 78913 / 2^18
+    JSON_ASSERT(e >= -1500);
+    JSON_ASSERT(e <=  1500);
+    const int f = kAlpha - e - 1;
+    const int k = ((f * 78913) / (1 << 18)) + static_cast<int>(f > 0);
+
+    const int index = (-kCachedPowersMinDecExp + k + (kCachedPowersDecStep - 1)) / kCachedPowersDecStep;
+    JSON_ASSERT(index >= 0);
+    JSON_ASSERT(static_cast<std::size_t>(index) < kCachedPowers.size());
+
+    const cached_power cached = kCachedPowers[static_cast<std::size_t>(index)];
+    JSON_ASSERT(kAlpha <= cached.e + e + 64);
+    JSON_ASSERT(kGamma >= cached.e + e + 64);
+
+    return cached;
+}
+
+/*!
+For n != 0, returns k, such that pow10 := 10^(k-1) <= n < 10^k.
+For n == 0, returns 1 and sets pow10 := 1.
+*/
+inline int find_largest_pow10(const std::uint32_t n, std::uint32_t& pow10)
+{
+    // LCOV_EXCL_START
+    if (n >= 1000000000)
+    {
+        pow10 = 1000000000;
+        return 10;
+    }
+    // LCOV_EXCL_STOP
+    if (n >= 100000000)
+    {
+        pow10 = 100000000;
+        return  9;
+    }
+    if (n >= 10000000)
+    {
+        pow10 = 10000000;
+        return  8;
+    }
+    if (n >= 1000000)
+    {
+        pow10 = 1000000;
+        return  7;
+    }
+    if (n >= 100000)
+    {
+        pow10 = 100000;
+        return  6;
+    }
+    if (n >= 10000)
+    {
+        pow10 = 10000;
+        return  5;
+    }
+    if (n >= 1000)
+    {
+        pow10 = 1000;
+        return  4;
+    }
+    if (n >= 100)
+    {
+        pow10 = 100;
+        return  3;
+    }
+    if (n >= 10)
+    {
+        pow10 = 10;
+        return  2;
+    }
+
+    pow10 = 1;
+    return 1;
+}
+
+inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t delta,
+                         std::uint64_t rest, std::uint64_t ten_k)
+{
+    JSON_ASSERT(len >= 1);
+    JSON_ASSERT(dist <= delta);
+    JSON_ASSERT(rest <= delta);
+    JSON_ASSERT(ten_k > 0);
+
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    //                                  ten_k
+    //                                <------>
+    //                                       <---- rest ---->
+    // --------------[------------------+----+--------------]--------------
+    //                                  w    V
+    //                                       = buf * 10^k
+    //
+    // ten_k represents a unit-in-the-last-place in the decimal representation
+    // stored in buf.
+    // Decrement buf by ten_k while this takes buf closer to w.
+
+    // The tests are written in this order to avoid overflow in unsigned
+    // integer arithmetic.
+
+    while (rest < dist
+            && delta - rest >= ten_k
+            && (rest + ten_k < dist || dist - rest > rest + ten_k - dist))
+    {
+        JSON_ASSERT(buf[len - 1] != '0');
+        buf[len - 1]--;
+        rest += ten_k;
+    }
+}
+
+/*!
+Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+.
+M- and M+ must be normalized and share the same exponent -60 <= e <= -32.
+*/
+inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
+                             diyfp M_minus, diyfp w, diyfp M_plus)
+{
+    static_assert(kAlpha >= -60, "internal error");
+    static_assert(kGamma <= -32, "internal error");
+
+    // Generates the digits (and the exponent) of a decimal floating-point
+    // number V = buffer * 10^decimal_exponent in the range [M-, M+]. The diyfp's
+    // w, M- and M+ share the same exponent e, which satisfies alpha <= e <= gamma.
+    //
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    // Grisu2 generates the digits of M+ from left to right and stops as soon as
+    // V is in [M-,M+].
+
+    JSON_ASSERT(M_plus.e >= kAlpha);
+    JSON_ASSERT(M_plus.e <= kGamma);
+
+    std::uint64_t delta = diyfp::sub(M_plus, M_minus).f; // (significand of (M+ - M-), implicit exponent is e)
+    std::uint64_t dist  = diyfp::sub(M_plus, w      ).f; // (significand of (M+ - w ), implicit exponent is e)
+
+    // Split M+ = f * 2^e into two parts p1 and p2 (note: e < 0):
+    //
+    //      M+ = f * 2^e
+    //         = ((f div 2^-e) * 2^-e + (f mod 2^-e)) * 2^e
+    //         = ((p1        ) * 2^-e + (p2        )) * 2^e
+    //         = p1 + p2 * 2^e
+
+    const diyfp one(std::uint64_t{1} << -M_plus.e, M_plus.e);
+
+    auto p1 = static_cast<std::uint32_t>(M_plus.f >> -one.e); // p1 = f div 2^-e (Since -e >= 32, p1 fits into a 32-bit int.)
+    std::uint64_t p2 = M_plus.f & (one.f - 1);                    // p2 = f mod 2^-e
+
+    // 1)
+    //
+    // Generate the digits of the integral part p1 = d[n-1]...d[1]d[0]
+
+    JSON_ASSERT(p1 > 0);
+
+    std::uint32_t pow10{};
+    const int k = find_largest_pow10(p1, pow10);
+
+    //      10^(k-1) <= p1 < 10^k, pow10 = 10^(k-1)
+    //
+    //      p1 = (p1 div 10^(k-1)) * 10^(k-1) + (p1 mod 10^(k-1))
+    //         = (d[k-1]         ) * 10^(k-1) + (p1 mod 10^(k-1))
+    //
+    //      M+ = p1                                             + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + (p1 mod 10^(k-1))          + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + ((p1 mod 10^(k-1)) * 2^-e + p2) * 2^e
+    //         = d[k-1] * 10^(k-1) + (                         rest) * 2^e
+    //
+    // Now generate the digits d[n] of p1 from left to right (n = k-1,...,0)
+    //
+    //      p1 = d[k-1]...d[n] * 10^n + d[n-1]...d[0]
+    //
+    // but stop as soon as
+    //
+    //      rest * 2^e = (d[n-1]...d[0] * 2^-e + p2) * 2^e <= delta * 2^e
+
+    int n = k;
+    while (n > 0)
+    {
+        // Invariants:
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)    (buffer = 0 for n = k)
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        //
+        const std::uint32_t d = p1 / pow10;  // d = p1 div 10^(n-1)
+        const std::uint32_t r = p1 % pow10;  // r = p1 mod 10^(n-1)
+        //
+        //      M+ = buffer * 10^n + (d * 10^(n-1) + r) + p2 * 2^e
+        //         = (buffer * 10 + d) * 10^(n-1) + (r + p2 * 2^e)
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(n-1) + (r + p2 * 2^e)
+        //
+        p1 = r;
+        n--;
+        //
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)
+        //      pow10 = 10^n
+        //
+
+        // Now check if enough digits have been generated.
+        // Compute
+        //
+        //      p1 + p2 * 2^e = (p1 * 2^-e + p2) * 2^e = rest * 2^e
+        //
+        // Note:
+        // Since rest and delta share the same exponent e, it suffices to
+        // compare the significands.
+        const std::uint64_t rest = (std::uint64_t{p1} << -one.e) + p2;
+        if (rest <= delta)
+        {
+            // V = buffer * 10^n, with M- <= V <= M+.
+
+            decimal_exponent += n;
+
+            // We may now just stop. But instead look if the buffer could be
+            // decremented to bring V closer to w.
+            //
+            // pow10 = 10^n is now 1 ulp in the decimal representation V.
+            // The rounding procedure works with diyfp's with an implicit
+            // exponent of e.
+            //
+            //      10^n = (10^n * 2^-e) * 2^e = ulp * 2^e
+            //
+            const std::uint64_t ten_n = std::uint64_t{pow10} << -one.e;
+            grisu2_round(buffer, length, dist, delta, rest, ten_n);
+
+            return;
+        }
+
+        pow10 /= 10;
+        //
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        // Invariants restored.
+    }
+
+    // 2)
+    //
+    // The digits of the integral part have been generated:
+    //
+    //      M+ = d[k-1]...d[1]d[0] + p2 * 2^e
+    //         = buffer            + p2 * 2^e
+    //
+    // Now generate the digits of the fractional part p2 * 2^e.
+    //
+    // Note:
+    // No decimal point is generated: the exponent is adjusted instead.
+    //
+    // p2 actually represents the fraction
+    //
+    //      p2 * 2^e
+    //          = p2 / 2^-e
+    //          = d[-1] / 10^1 + d[-2] / 10^2 + ...
+    //
+    // Now generate the digits d[-m] of p1 from left to right (m = 1,2,...)
+    //
+    //      p2 * 2^e = d[-1]d[-2]...d[-m] * 10^-m
+    //                      + 10^-m * (d[-m-1] / 10^1 + d[-m-2] / 10^2 + ...)
+    //
+    // using
+    //
+    //      10^m * p2 = ((10^m * p2) div 2^-e) * 2^-e + ((10^m * p2) mod 2^-e)
+    //                = (                   d) * 2^-e + (                   r)
+    //
+    // or
+    //      10^m * p2 * 2^e = d + r * 2^e
+    //
+    // i.e.
+    //
+    //      M+ = buffer + p2 * 2^e
+    //         = buffer + 10^-m * (d + r * 2^e)
+    //         = (buffer * 10^m + d) * 10^-m + 10^-m * r * 2^e
+    //
+    // and stop as soon as 10^-m * r * 2^e <= delta * 2^e
+
+    JSON_ASSERT(p2 > delta);
+
+    int m = 0;
+    for (;;)
+    {
+        // Invariant:
+        //      M+ = buffer * 10^-m + 10^-m * (d[-m-1] / 10 + d[-m-2] / 10^2 + ...) * 2^e
+        //         = buffer * 10^-m + 10^-m * (p2                                 ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (10 * p2)                   ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * ((10*p2 div 2^-e) * 2^-e + (10*p2 mod 2^-e)) * 2^e
+        //
+        JSON_ASSERT(p2 <= (std::numeric_limits<std::uint64_t>::max)() / 10);
+        p2 *= 10;
+        const std::uint64_t d = p2 >> -one.e;     // d = (10 * p2) div 2^-e
+        const std::uint64_t r = p2 & (one.f - 1); // r = (10 * p2) mod 2^-e
+        //
+        //      M+ = buffer * 10^-m + 10^-m * (1/10 * (d * 2^-e + r) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (d + r * 2^e))
+        //         = (buffer * 10 + d) * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        p2 = r;
+        m++;
+        //
+        //      M+ = buffer * 10^-m + 10^-m * p2 * 2^e
+        // Invariant restored.
+
+        // Check if enough digits have been generated.
+        //
+        //      10^-m * p2 * 2^e <= delta * 2^e
+        //              p2 * 2^e <= 10^m * delta * 2^e
+        //                    p2 <= 10^m * delta
+        delta *= 10;
+        dist  *= 10;
+        if (p2 <= delta)
+        {
+            break;
+        }
+    }
+
+    // V = buffer * 10^-m, with M- <= V <= M+.
+
+    decimal_exponent -= m;
+
+    // 1 ulp in the decimal representation is now 10^-m.
+    // Since delta and dist are now scaled by 10^m, we need to do the
+    // same with ulp in order to keep the units in sync.
+    //
+    //      10^m * 10^-m = 1 = 2^-e * 2^e = ten_m * 2^e
+    //
+    const std::uint64_t ten_m = one.f;
+    grisu2_round(buffer, length, dist, delta, p2, ten_m);
+
+    // By construction this algorithm generates the shortest possible decimal
+    // number (Loitsch, Theorem 6.2) which rounds back to w.
+    // For an input number of precision p, at least
+    //
+    //      N = 1 + ceil(p * log_10(2))
+    //
+    // decimal digits are sufficient to identify all binary floating-point
+    // numbers (Matula, "In-and-Out conversions").
+    // This implies that the algorithm does not produce more than N decimal
+    // digits.
+    //
+    //      N = 17 for p = 53 (IEEE double precision)
+    //      N = 9  for p = 24 (IEEE single precision)
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+JSON_HEDLEY_NON_NULL(1)
+inline void grisu2(char* buf, int& len, int& decimal_exponent,
+                   diyfp m_minus, diyfp v, diyfp m_plus)
+{
+    JSON_ASSERT(m_plus.e == m_minus.e);
+    JSON_ASSERT(m_plus.e == v.e);
+
+    //  --------(-----------------------+-----------------------)--------    (A)
+    //          m-                      v                       m+
+    //
+    //  --------------------(-----------+-----------------------)--------    (B)
+    //                      m-          v                       m+
+    //
+    // First scale v (and m- and m+) such that the exponent is in the range
+    // [alpha, gamma].
+
+    const cached_power cached = get_cached_power_for_binary_exponent(m_plus.e);
+
+    const diyfp c_minus_k(cached.f, cached.e); // = c ~= 10^-k
+
+    // The exponent of the products is = v.e + c_minus_k.e + q and is in the range [alpha,gamma]
+    const diyfp w       = diyfp::mul(v,       c_minus_k);
+    const diyfp w_minus = diyfp::mul(m_minus, c_minus_k);
+    const diyfp w_plus  = diyfp::mul(m_plus,  c_minus_k);
+
+    //  ----(---+---)---------------(---+---)---------------(---+---)----
+    //          w-                      w                       w+
+    //          = c*m-                  = c*v                   = c*m+
+    //
+    // diyfp::mul rounds its result and c_minus_k is approximated too. w, w- and
+    // w+ are now off by a small amount.
+    // In fact:
+    //
+    //      w - v * 10^k < 1 ulp
+    //
+    // To account for this inaccuracy, add resp. subtract 1 ulp.
+    //
+    //  --------+---[---------------(---+---)---------------]---+--------
+    //          w-  M-                  w                   M+  w+
+    //
+    // Now any number in [M-, M+] (bounds included) will round to w when input,
+    // regardless of how the input rounding algorithm breaks ties.
+    //
+    // And digit_gen generates the shortest possible such number in [M-, M+].
+    // Note that this does not mean that Grisu2 always generates the shortest
+    // possible number in the interval (m-, m+).
+    const diyfp M_minus(w_minus.f + 1, w_minus.e);
+    const diyfp M_plus (w_plus.f  - 1, w_plus.e );
+
+    decimal_exponent = -cached.k; // = -(-k) = k
+
+    grisu2_digit_gen(buf, len, decimal_exponent, M_minus, w, M_plus);
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1)
+void grisu2(char* buf, int& len, int& decimal_exponent, FloatType value)
+{
+    static_assert(diyfp::kPrecision >= std::numeric_limits<FloatType>::digits + 3,
+                  "internal error: not enough precision");
+
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // If the neighbors (and boundaries) of 'value' are always computed for double-precision
+    // numbers, all float's can be recovered using strtod (and strtof). However, the resulting
+    // decimal representations are not exactly "short".
+    //
+    // The documentation for 'std::to_chars' (https://en.cppreference.com/w/cpp/utility/to_chars)
+    // says "value is converted to a string as if by std::sprintf in the default ("C") locale"
+    // and since sprintf promotes floats to doubles, I think this is exactly what 'std::to_chars'
+    // does.
+    // On the other hand, the documentation for 'std::to_chars' requires that "parsing the
+    // representation using the corresponding std::from_chars function recovers value exactly". That
+    // indicates that single precision floating-point numbers should be recovered using
+    // 'std::strtof'.
+    //
+    // NB: If the neighbors are computed for single-precision numbers, there is a single float
+    //     (7.0385307e-26f) which can't be recovered using strtod. The resulting double precision
+    //     value is off by 1 ulp.
+#if 0 // NOLINT(readability-avoid-unconditional-preprocessor-if)
+    const boundaries w = compute_boundaries(static_cast<double>(value));
+#else
+    const boundaries w = compute_boundaries(value);
+#endif
+
+    grisu2(buf, len, decimal_exponent, w.minus, w.w, w.plus);
+}
+
+/*!
+@brief appends a decimal representation of e to buf
+@return a pointer to the element following the exponent.
+@pre -1000 < e < 1000
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* append_exponent(char* buf, int e)
+{
+    JSON_ASSERT(e > -1000);
+    JSON_ASSERT(e <  1000);
+
+    if (e < 0)
+    {
+        e = -e;
+        *buf++ = '-';
+    }
+    else
+    {
+        *buf++ = '+';
+    }
+
+    auto k = static_cast<std::uint32_t>(e);
+    if (k < 10)
+    {
+        // Always print at least two digits in the exponent.
+        // This is for compatibility with printf("%g").
+        *buf++ = '0';
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else if (k < 100)
+    {
+        *buf++ = static_cast<char>('0' + (k / 10));
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else
+    {
+        *buf++ = static_cast<char>('0' + (k / 100));
+        k %= 100;
+        *buf++ = static_cast<char>('0' + (k / 10));
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+
+    return buf;
+}
+
+/*!
+@brief prettify v = buf * 10^decimal_exponent
+
+If v is in the range [10^min_exp, 10^max_exp) it will be printed in fixed-point
+notation. Otherwise it will be printed in exponential notation.
+
+@pre min_exp < 0
+@pre max_exp > 0
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* format_buffer(char* buf, int len, int decimal_exponent,
+                           int min_exp, int max_exp)
+{
+    JSON_ASSERT(min_exp < 0);
+    JSON_ASSERT(max_exp > 0);
+
+    const int k = len;
+    const int n = len + decimal_exponent;
+
+    // v = buf * 10^(n-k)
+    // k is the length of the buffer (number of decimal digits)
+    // n is the position of the decimal point relative to the start of the buffer.
+
+    if (k <= n && n <= max_exp)
+    {
+        // digits[000]
+        // len <= max_exp + 2
+
+        std::memset(buf + k, '0', static_cast<size_t>(n) - static_cast<size_t>(k));
+        // Make it look like a floating-point number (#362, #378)
+        buf[n + 0] = '.';
+        buf[n + 1] = '0';
+        return buf + (static_cast<size_t>(n) + 2);
+    }
+
+    if (0 < n && n <= max_exp)
+    {
+        // dig.its
+        // len <= max_digits10 + 1
+
+        JSON_ASSERT(k > n);
+
+        std::memmove(buf + (static_cast<size_t>(n) + 1), buf + n, static_cast<size_t>(k) - static_cast<size_t>(n));
+        buf[n] = '.';
+        return buf + (static_cast<size_t>(k) + 1U);
+    }
+
+    if (min_exp < n && n <= 0)
+    {
+        // 0.[000]digits
+        // len <= 2 + (-min_exp - 1) + max_digits10
+
+        std::memmove(buf + (2 + static_cast<size_t>(-n)), buf, static_cast<size_t>(k));
+        buf[0] = '0';
+        buf[1] = '.';
+        std::memset(buf + 2, '0', static_cast<size_t>(-n));
+        return buf + (2U + static_cast<size_t>(-n) + static_cast<size_t>(k));
+    }
+
+    if (k == 1)
+    {
+        // dE+123
+        // len <= 1 + 5
+
+        buf += 1;
+    }
+    else
+    {
+        // d.igitsE+123
+        // len <= max_digits10 + 1 + 5
+
+        std::memmove(buf + 2, buf + 1, static_cast<size_t>(k) - 1);
+        buf[1] = '.';
+        buf += 1 + static_cast<size_t>(k);
+    }
+
+    *buf++ = 'e';
+    return append_exponent(buf, n - 1);
+}
+
+}  // namespace dtoa_impl
+
+/*!
+@brief generates a decimal representation of the floating-point number value in [first, last).
+
+The format of the resulting decimal representation is similar to printf's %g
+format. Returns an iterator pointing past-the-end of the decimal representation.
+
+@note The input number must be finite, i.e. NaN's and Inf's are not supported.
+@note The buffer must be large enough.
+@note The result is NOT null-terminated.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* to_chars(char* first, const char* last, FloatType value)
+{
+    static_cast<void>(last); // maybe unused - fix warning
+    JSON_ASSERT(std::isfinite(value));
+
+    // Use signbit(value) instead of (value < 0) since signbit works for -0.
+    if (std::signbit(value))
+    {
+        value = -value;
+        *first++ = '-';
+    }
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+    if (value == 0) // +-0
+    {
+        *first++ = '0';
+        // Make it look like a floating-point number (#362, #378)
+        *first++ = '.';
+        *first++ = '0';
+        return first;
+    }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);
+
+    // Compute v = buffer * 10^decimal_exponent.
+    // The decimal digits are stored in the buffer, which needs to be interpreted
+    // as an unsigned decimal integer.
+    // len is the length of the buffer, i.e. the number of decimal digits.
+    int len = 0;
+    int decimal_exponent = 0;
+    dtoa_impl::grisu2(first, len, decimal_exponent, value);
+
+    JSON_ASSERT(len <= std::numeric_limits<FloatType>::max_digits10);
+
+    // Format the buffer like printf("%.*g", prec, value)
+    constexpr int kMinExp = -4;
+    // Use digits10 here to increase compatibility with version 2.
+    constexpr int kMaxExp = std::numeric_limits<FloatType>::digits10;
+
+    JSON_ASSERT(last - first >= kMaxExp + 2);
+    JSON_ASSERT(last - first >= 2 + (-kMinExp - 1) + std::numeric_limits<FloatType>::max_digits10);
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10 + 6);
+
+    return dtoa_impl::format_buffer(first, len, decimal_exponent, kMinExp, kMaxExp);
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/to_json.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/to_json.hpp
new file mode 100644
index 00000000..8b8c6863
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/conversions/to_json.hpp
@@ -0,0 +1,466 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <algorithm> // copy
+#include <iterator> // begin, end
+#ifdef JSON_HAS_CPP_17
+    #include <optional> // optional
+#endif
+#include <string> // string
+#include <tuple> // tuple, get
+#include <type_traits> // is_same, is_constructible, is_floating_point, is_enum, underlying_type
+#include <utility> // move, forward, declval, pair
+#include <valarray> // valarray
+#include <vector> // vector
+
+#include <nlohmann/detail/iterators/iteration_proxy.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/meta/std_fs.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+//////////////////
+// constructors //
+//////////////////
+
+/*
+ * Note all external_constructor<>::construct functions need to call
+ * j.m_data.m_value.destroy(j.m_data.m_type) to avoid a memory leak in case j contains an
+ * allocated value (e.g., a string). See bug issue
+ * https://github.com/nlohmann/json/issues/2865 for more information.
+ */
+
+template<value_t> struct external_constructor;
+
+template<>
+struct external_constructor<value_t::boolean>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::boolean_t b) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::boolean;
+        j.m_data.m_value = b;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::string>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::string_t& s)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value = s;
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value = std::move(s);
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleStringType,
+               enable_if_t < !std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleStringType& str)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value.string = j.template create<typename BasicJsonType::string_t>(str);
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::binary>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::binary_t& b)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::binary;
+        j.m_data.m_value = typename BasicJsonType::binary_t(b);
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::binary_t&& b)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::binary;
+        j.m_data.m_value = typename BasicJsonType::binary_t(std::move(b));
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_float>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_float_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_float;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_unsigned>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_unsigned_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_unsigned;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_integer>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_integer_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_integer;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::array>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::array_t& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = arr;
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = std::move(arr);
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleArrayType,
+               enable_if_t < !std::is_same<CompatibleArrayType, typename BasicJsonType::array_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleArrayType& arr)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value.array = j.template create<typename BasicJsonType::array_t>(begin(arr), end(arr));
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const std::vector<bool>& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = value_t::array;
+        j.m_data.m_value.array->reserve(arr.size());
+        for (const bool x : arr)
+        {
+            j.m_data.m_value.array->push_back(x);
+            j.set_parent(j.m_data.m_value.array->back());
+        }
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType, typename T,
+             enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+    static void construct(BasicJsonType& j, const std::valarray<T>& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = value_t::array;
+        j.m_data.m_value.array->resize(arr.size());
+        if (arr.size() > 0)
+        {
+            std::copy(std::begin(arr), std::end(arr), j.m_data.m_value.array->begin());
+        }
+        j.set_parents();
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::object>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::object_t& obj)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value = obj;
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value = std::move(obj);
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleObjectType,
+               enable_if_t < !std::is_same<CompatibleObjectType, typename BasicJsonType::object_t>::value, int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleObjectType& obj)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value.object = j.template create<typename BasicJsonType::object_t>(begin(obj), end(obj));
+        j.set_parents();
+        j.assert_invariant();
+    }
+};
+
+/////////////
+// to_json //
+/////////////
+
+#ifdef JSON_HAS_CPP_17
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_constructible<BasicJsonType, T>::value, int> = 0>
+void to_json(BasicJsonType& j, const std::optional<T>& opt)
+{
+    if (opt.has_value())
+    {
+        j = *opt;
+    }
+    else
+    {
+        j = nullptr;
+    }
+}
+#endif
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, typename BasicJsonType::boolean_t>::value, int> = 0>
+inline void to_json(BasicJsonType& j, T b) noexcept
+{
+    external_constructor<value_t::boolean>::construct(j, b);
+}
+
+template < typename BasicJsonType, typename BoolRef,
+           enable_if_t <
+               ((std::is_same<std::vector<bool>::reference, BoolRef>::value
+                 && !std::is_same <std::vector<bool>::reference, typename BasicJsonType::boolean_t&>::value)
+                || (std::is_same<std::vector<bool>::const_reference, BoolRef>::value
+                    && !std::is_same <detail::uncvref_t<std::vector<bool>::const_reference>,
+                                      typename BasicJsonType::boolean_t >::value))
+               && std::is_convertible<const BoolRef&, typename BasicJsonType::boolean_t>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const BoolRef& b) noexcept
+{
+    external_constructor<value_t::boolean>::construct(j, static_cast<typename BasicJsonType::boolean_t>(b));
+}
+
+template<typename BasicJsonType, typename CompatibleString,
+         enable_if_t<std::is_constructible<typename BasicJsonType::string_t, CompatibleString>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const CompatibleString& s)
+{
+    external_constructor<value_t::string>::construct(j, s);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+{
+    external_constructor<value_t::string>::construct(j, std::move(s));
+}
+
+template<typename BasicJsonType, typename FloatType,
+         enable_if_t<std::is_floating_point<FloatType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, FloatType val) noexcept
+{
+    external_constructor<value_t::number_float>::construct(j, static_cast<typename BasicJsonType::number_float_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberUnsignedType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_unsigned_t, CompatibleNumberUnsignedType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, CompatibleNumberUnsignedType val) noexcept
+{
+    external_constructor<value_t::number_unsigned>::construct(j, static_cast<typename BasicJsonType::number_unsigned_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberIntegerType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_integer_t, CompatibleNumberIntegerType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, CompatibleNumberIntegerType val) noexcept
+{
+    external_constructor<value_t::number_integer>::construct(j, static_cast<typename BasicJsonType::number_integer_t>(val));
+}
+
+#if !JSON_DISABLE_ENUM_SERIALIZATION
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, EnumType e) noexcept
+{
+    using underlying_type = typename std::underlying_type<EnumType>::type;
+    static constexpr value_t integral_value_t = std::is_unsigned<underlying_type>::value ? value_t::number_unsigned : value_t::number_integer;
+    external_constructor<integral_value_t>::construct(j, static_cast<underlying_type>(e));
+}
+#endif  // JSON_DISABLE_ENUM_SERIALIZATION
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const std::vector<bool>& e)
+{
+    external_constructor<value_t::array>::construct(j, e);
+}
+
+template < typename BasicJsonType, typename CompatibleArrayType,
+           enable_if_t < is_compatible_array_type<BasicJsonType,
+                         CompatibleArrayType>::value&&
+                         !is_compatible_object_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !is_compatible_string_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !std::is_same<typename BasicJsonType::binary_t, CompatibleArrayType>::value&&
+                         !is_basic_json<CompatibleArrayType>::value,
+                         int > = 0 >
+inline void to_json(BasicJsonType& j, const CompatibleArrayType& arr)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const typename BasicJsonType::binary_t& bin)
+{
+    external_constructor<value_t::binary>::construct(j, bin);
+}
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const std::valarray<T>& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template < typename BasicJsonType, typename CompatibleObjectType,
+           enable_if_t < is_compatible_object_type<BasicJsonType, CompatibleObjectType>::value&& !is_basic_json<CompatibleObjectType>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const CompatibleObjectType& obj)
+{
+    external_constructor<value_t::object>::construct(j, obj);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+{
+    external_constructor<value_t::object>::construct(j, std::move(obj));
+}
+
+template <
+    typename BasicJsonType, typename T, std::size_t N,
+    enable_if_t < !std::is_constructible<typename BasicJsonType::string_t,
+                  const T(&)[N]>::value, // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                  int > = 0 >
+inline void to_json(BasicJsonType& j, const T(&arr)[N]) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template < typename BasicJsonType, typename T1, typename T2, enable_if_t < std::is_constructible<BasicJsonType, T1>::value&& std::is_constructible<BasicJsonType, T2>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const std::pair<T1, T2>& p)
+{
+    j = { p.first, p.second };
+}
+
+// for https://github.com/nlohmann/json/pull/1134
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const T& b)
+{
+    j = { {b.key(), b.value()} };
+}
+
+template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
+inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<Idx...> /*unused*/)
+{
+    j = { std::get<Idx>(t)... };
+}
+
+template<typename BasicJsonType, typename T, enable_if_t<is_constructible_tuple<BasicJsonType, T>::value, int > = 0>
+inline void to_json(BasicJsonType& j, const T& t)
+{
+    to_json_tuple_impl(j, t, make_index_sequence<std::tuple_size<T>::value> {});
+}
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const std_fs::path& p)
+{
+    j = p.string();
+}
+#endif
+
+struct to_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(BasicJsonType& j, T&& val) const noexcept(noexcept(to_json(j, std::forward<T>(val))))
+    -> decltype(to_json(j, std::forward<T>(val)), void())
+    {
+        return to_json(j, std::forward<T>(val));
+    }
+};
+}  // namespace detail
+
+#ifndef JSON_HAS_CPP_17
+/// namespace to hold default `to_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+{
+#endif
+JSON_INLINE_VARIABLE constexpr const auto& to_json = // NOLINT(misc-definitions-in-headers)
+    detail::static_const<detail::to_json_fn>::value;
+#ifndef JSON_HAS_CPP_17
+}  // namespace
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/exceptions.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/exceptions.hpp
new file mode 100644
index 00000000..1fabeb16
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/exceptions.hpp
@@ -0,0 +1,273 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstddef> // nullptr_t
+#include <exception> // exception
+#if JSON_DIAGNOSTICS
+    #include <numeric> // accumulate
+#endif
+#include <stdexcept> // runtime_error
+#include <string> // to_string
+#include <vector> // vector
+
+#include <nlohmann/detail/value_t.hpp>
+#include <nlohmann/detail/string_escape.hpp>
+#include <nlohmann/detail/input/position_t.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+
+// With -Wweak-vtables, Clang will complain about the exception classes as they
+// have no out-of-line virtual method definitions and their vtable will be
+// emitted in every translation unit. This issue cannot be fixed with a
+// header-only library as there is no implementation file to move these
+// functions to. As a result, we suppress this warning here to avoid client
+// code to stumble over this. See https://github.com/nlohmann/json/issues/4087
+// for a discussion.
+#if defined(__clang__)
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wweak-vtables"
+#endif
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+////////////////
+// exceptions //
+////////////////
+
+/// @brief general exception of the @ref basic_json class
+/// @sa https://json.nlohmann.me/api/basic_json/exception/
+class exception : public std::exception
+{
+  public:
+    /// returns the explanatory string
+    const char* what() const noexcept override
+    {
+        return m.what();
+    }
+
+    /// the id of the exception
+    const int id; // NOLINT(cppcoreguidelines-non-private-member-variables-in-classes)
+
+  protected:
+    JSON_HEDLEY_NON_NULL(3)
+    exception(int id_, const char* what_arg) : id(id_), m(what_arg) {} // NOLINT(bugprone-throw-keyword-missing)
+
+    static std::string name(const std::string& ename, int id_)
+    {
+        return concat("[json.exception.", ename, '.', std::to_string(id_), "] ");
+    }
+
+    static std::string diagnostics(std::nullptr_t /*leaf_element*/)
+    {
+        return "";
+    }
+
+    template<typename BasicJsonType>
+    static std::string diagnostics(const BasicJsonType* leaf_element)
+    {
+#if JSON_DIAGNOSTICS
+        std::vector<std::string> tokens;
+        for (const auto* current = leaf_element; current != nullptr && current->m_parent != nullptr; current = current->m_parent)
+        {
+            switch (current->m_parent->type())
+            {
+                case value_t::array:
+                {
+                    for (std::size_t i = 0; i < current->m_parent->m_data.m_value.array->size(); ++i)
+                    {
+                        if (&current->m_parent->m_data.m_value.array->operator[](i) == current)
+                        {
+                            tokens.emplace_back(std::to_string(i));
+                            break;
+                        }
+                    }
+                    break;
+                }
+
+                case value_t::object:
+                {
+                    for (const auto& element : *current->m_parent->m_data.m_value.object)
+                    {
+                        if (&element.second == current)
+                        {
+                            tokens.emplace_back(element.first.c_str());
+                            break;
+                        }
+                    }
+                    break;
+                }
+
+                case value_t::null: // LCOV_EXCL_LINE
+                case value_t::string: // LCOV_EXCL_LINE
+                case value_t::boolean: // LCOV_EXCL_LINE
+                case value_t::number_integer: // LCOV_EXCL_LINE
+                case value_t::number_unsigned: // LCOV_EXCL_LINE
+                case value_t::number_float: // LCOV_EXCL_LINE
+                case value_t::binary: // LCOV_EXCL_LINE
+                case value_t::discarded: // LCOV_EXCL_LINE
+                default:   // LCOV_EXCL_LINE
+                    break; // LCOV_EXCL_LINE
+            }
+        }
+
+        if (tokens.empty())
+        {
+            return "";
+        }
+
+        auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
+                                   [](const std::string & a, const std::string & b)
+        {
+            return concat(a, '/', detail::escape(b));
+        });
+        return concat('(', str, ") ");
+#else
+        static_cast<void>(leaf_element);
+        return "";
+#endif
+    }
+
+  private:
+    /// an exception object as storage for error messages
+    std::runtime_error m;
+};
+
+/// @brief exception indicating a parse error
+/// @sa https://json.nlohmann.me/api/basic_json/parse_error/
+class parse_error : public exception
+{
+  public:
+    /*!
+    @brief create a parse error exception
+    @param[in] id_       the id of the exception
+    @param[in] pos       the position where the error occurred (or with
+                         chars_read_total=0 if the position cannot be
+                         determined)
+    @param[in] what_arg  the explanatory string
+    @return parse_error object
+    */
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static parse_error create(int id_, const position_t& pos, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("parse_error", id_), "parse error",
+                                     position_string(pos), ": ", exception::diagnostics(context), what_arg);
+        return {id_, pos.chars_read_total, w.c_str()};
+    }
+
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static parse_error create(int id_, std::size_t byte_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("parse_error", id_), "parse error",
+                                     (byte_ != 0 ? (concat(" at byte ", std::to_string(byte_))) : ""),
+                                     ": ", exception::diagnostics(context), what_arg);
+        return {id_, byte_, w.c_str()};
+    }
+
+    /*!
+    @brief byte index of the parse error
+
+    The byte index of the last read character in the input file.
+
+    @note For an input with n bytes, 1 is the index of the first character and
+          n+1 is the index of the terminating null byte or the end of file.
+          This also holds true when reading a byte vector (CBOR or MessagePack).
+    */
+    const std::size_t byte;
+
+  private:
+    parse_error(int id_, std::size_t byte_, const char* what_arg)
+        : exception(id_, what_arg), byte(byte_) {}
+
+    static std::string position_string(const position_t& pos)
+    {
+        return concat(" at line ", std::to_string(pos.lines_read + 1),
+                      ", column ", std::to_string(pos.chars_read_current_line));
+    }
+};
+
+/// @brief exception indicating errors with iterators
+/// @sa https://json.nlohmann.me/api/basic_json/invalid_iterator/
+class invalid_iterator : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static invalid_iterator create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("invalid_iterator", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    invalid_iterator(int id_, const char* what_arg)
+        : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating executing a member function with a wrong type
+/// @sa https://json.nlohmann.me/api/basic_json/type_error/
+class type_error : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static type_error create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("type_error", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating access out of the defined range
+/// @sa https://json.nlohmann.me/api/basic_json/out_of_range/
+class out_of_range : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static out_of_range create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("out_of_range", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating other library errors
+/// @sa https://json.nlohmann.me/api/basic_json/other_error/
+class other_error : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static other_error create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("other_error", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/hash.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/hash.hpp
new file mode 100644
index 00000000..cfe4ccba
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/hash.hpp
@@ -0,0 +1,129 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstdint> // uint8_t
+#include <cstddef> // size_t
+#include <functional> // hash
+
+#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// boost::hash_combine
+inline std::size_t combine(std::size_t seed, std::size_t h) noexcept
+{
+    seed ^= h + 0x9e3779b9 + (seed << 6U) + (seed >> 2U);
+    return seed;
+}
+
+/*!
+@brief hash a JSON value
+
+The hash function tries to rely on std::hash where possible. Furthermore, the
+type of the JSON value is taken into account to have different hash values for
+null, 0, 0U, and false, etc.
+
+@tparam BasicJsonType basic_json specialization
+@param j JSON value to hash
+@return hash value of j
+*/
+template<typename BasicJsonType>
+std::size_t hash(const BasicJsonType& j)
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+    const auto type = static_cast<std::size_t>(j.type());
+    switch (j.type())
+    {
+        case BasicJsonType::value_t::null:
+        case BasicJsonType::value_t::discarded:
+        {
+            return combine(type, 0);
+        }
+
+        case BasicJsonType::value_t::object:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j.items())
+            {
+                const auto h = std::hash<string_t> {}(element.key());
+                seed = combine(seed, h);
+                seed = combine(seed, hash(element.value()));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::array:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j)
+            {
+                seed = combine(seed, hash(element));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::string:
+        {
+            const auto h = std::hash<string_t> {}(j.template get_ref<const string_t&>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::boolean:
+        {
+            const auto h = std::hash<bool> {}(j.template get<bool>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_integer:
+        {
+            const auto h = std::hash<number_integer_t> {}(j.template get<number_integer_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_unsigned:
+        {
+            const auto h = std::hash<number_unsigned_t> {}(j.template get<number_unsigned_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_float:
+        {
+            const auto h = std::hash<number_float_t> {}(j.template get<number_float_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::binary:
+        {
+            auto seed = combine(type, j.get_binary().size());
+            const auto h = std::hash<bool> {}(j.get_binary().has_subtype());
+            seed = combine(seed, h);
+            seed = combine(seed, static_cast<std::size_t>(j.get_binary().subtype()));
+            for (const auto byte : j.get_binary())
+            {
+                seed = combine(seed, std::hash<std::uint8_t> {}(byte));
+            }
+            return seed;
+        }
+
+        default:                   // LCOV_EXCL_LINE
+            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            return 0;              // LCOV_EXCL_LINE
+    }
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/binary_reader.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/binary_reader.hpp
new file mode 100644
index 00000000..f498b0de
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/binary_reader.hpp
@@ -0,0 +1,3044 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <algorithm> // generate_n
+#include <array> // array
+#include <cmath> // ldexp
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstdio> // snprintf
+#include <cstring> // memcpy
+#include <iterator> // back_inserter
+#include <limits> // numeric_limits
+#include <string> // char_traits, string
+#include <utility> // make_pair, move
+#include <vector> // vector
+#ifdef __cpp_lib_byteswap
+    #include <bit>  //byteswap
+#endif
+
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/input/input_adapters.hpp>
+#include <nlohmann/detail/input/json_sax.hpp>
+#include <nlohmann/detail/input/lexer.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/is_sax.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// how to treat CBOR tags
+enum class cbor_tag_handler_t
+{
+    error,   ///< throw a parse_error exception in case of a tag
+    ignore,  ///< ignore tags
+    store    ///< store tags as binary type
+};
+
+/*!
+@brief determine system byte order
+
+@return true if and only if system's byte order is little endian
+
+@note from https://stackoverflow.com/a/1001328/266378
+*/
+static inline bool little_endianness(int num = 1) noexcept
+{
+    return *reinterpret_cast<char*>(&num) == 1;
+}
+
+///////////////////
+// binary reader //
+///////////////////
+
+/*!
+@brief deserialization of CBOR, MessagePack, and UBJSON values
+*/
+template<typename BasicJsonType, typename InputAdapterType, typename SAX = json_sax_dom_parser<BasicJsonType, InputAdapterType>>
+class binary_reader
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using json_sax_t = SAX;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename char_traits<char_type>::int_type;
+
+  public:
+    /*!
+    @brief create a binary reader
+
+    @param[in] adapter  input adapter to read from
+    */
+    explicit binary_reader(InputAdapterType&& adapter, const input_format_t format = input_format_t::json) noexcept : ia(std::move(adapter)), input_format(format)
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+    }
+
+    // make class move-only
+    binary_reader(const binary_reader&) = delete;
+    binary_reader(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    binary_reader& operator=(const binary_reader&) = delete;
+    binary_reader& operator=(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~binary_reader() = default;
+
+    /*!
+    @param[in] format  the binary format to parse
+    @param[in] sax_    a SAX event processor
+    @param[in] strict  whether to expect the input to be consumed completed
+    @param[in] tag_handler  how to treat CBOR tags
+
+    @return whether parsing was successful
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool sax_parse(const input_format_t format,
+                   json_sax_t* sax_,
+                   const bool strict = true,
+                   const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        sax = sax_;
+        bool result = false;
+
+        switch (format)
+        {
+            case input_format_t::bson:
+                result = parse_bson_internal();
+                break;
+
+            case input_format_t::cbor:
+                result = parse_cbor_internal(true, tag_handler);
+                break;
+
+            case input_format_t::msgpack:
+                result = parse_msgpack_internal();
+                break;
+
+            case input_format_t::ubjson:
+            case input_format_t::bjdata:
+                result = parse_ubjson_internal();
+                break;
+
+            case input_format_t::json: // LCOV_EXCL_LINE
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+        // strict mode: next byte must be EOF
+        if (result && strict)
+        {
+            if (input_format == input_format_t::ubjson || input_format == input_format_t::bjdata)
+            {
+                get_ignore_noop();
+            }
+            else
+            {
+                get();
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(current != char_traits<char_type>::eof()))
+            {
+                return sax->parse_error(chars_read, get_token_string(), parse_error::create(110, chars_read,
+                                        exception_message(input_format, concat("expected end of input; last byte: 0x", get_token_string()), "value"), nullptr));
+            }
+        }
+
+        return result;
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @brief Reads in a BSON-object and passes it to the SAX-parser.
+    @return whether a valid BSON-value was passed to the SAX parser
+    */
+    bool parse_bson_internal()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/false)))
+        {
+            return false;
+        }
+
+        return sax->end_object();
+    }
+
+    /*!
+    @brief Parses a C-style string from the BSON input.
+    @param[in,out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @return `true` if the \x00-byte indicating the end of the string was
+             encountered before the EOF; false` indicates an unexpected EOF.
+    */
+    bool get_bson_cstr(string_t& result)
+    {
+        auto out = std::back_inserter(result);
+        while (true)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "cstring")))
+            {
+                return false;
+            }
+            if (current == 0x00)
+            {
+                return true;
+            }
+            *out++ = static_cast<typename string_t::value_type>(current);
+        }
+    }
+
+    /*!
+    @brief Parses a zero-terminated string of length @a len from the BSON
+           input.
+    @param[in] len  The length (including the zero-byte at the end) of the
+                    string to be read.
+    @param[in,out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 1
+    @return `true` if the string was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_string(const NumberType len, string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 1))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format_t::bson, concat("string length must be at least 1, is ", std::to_string(len)), "string"), nullptr));
+        }
+
+        return get_string(input_format_t::bson, len - static_cast<NumberType>(1), result) && get() != char_traits<char_type>::eof();
+    }
+
+    /*!
+    @brief Parses a byte array input of length @a len from the BSON input.
+    @param[in] len  The length of the byte array to be read.
+    @param[in,out] result  A reference to the binary variable where the read
+                            array is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 0
+    @return `true` if the byte array was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_binary(const NumberType len, binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 0))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format_t::bson, concat("byte array length cannot be negative, is ", std::to_string(len)), "binary"), nullptr));
+        }
+
+        // All BSON binary values have a subtype
+        std::uint8_t subtype{};
+        get_number<std::uint8_t>(input_format_t::bson, subtype);
+        result.set_subtype(subtype);
+
+        return get_binary(input_format_t::bson, len, result);
+    }
+
+    /*!
+    @brief Read a BSON document element of the given @a element_type.
+    @param[in] element_type The BSON element type, c.f. http://bsonspec.org/spec.html
+    @param[in] element_type_parse_position The position in the input stream,
+               where the `element_type` was read.
+    @warning Not all BSON element types are supported yet. An unsupported
+             @a element_type will give rise to a parse_error.114:
+             Unsupported BSON record type 0x...
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_internal(const char_int_type element_type,
+                                     const std::size_t element_type_parse_position)
+    {
+        switch (element_type)
+        {
+            case 0x01: // double
+            {
+                double number{};
+                return get_number<double, true>(input_format_t::bson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0x02: // string
+            {
+                std::int32_t len{};
+                string_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_string(len, value) && sax->string(value);
+            }
+
+            case 0x03: // object
+            {
+                return parse_bson_internal();
+            }
+
+            case 0x04: // array
+            {
+                return parse_bson_array();
+            }
+
+            case 0x05: // binary
+            {
+                std::int32_t len{};
+                binary_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_binary(len, value) && sax->binary(value);
+            }
+
+            case 0x08: // boolean
+            {
+                return sax->boolean(get() != 0);
+            }
+
+            case 0x0A: // null
+            {
+                return sax->null();
+            }
+
+            case 0x10: // int32
+            {
+                std::int32_t value{};
+                return get_number<std::int32_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            case 0x12: // int64
+            {
+                std::int64_t value{};
+                return get_number<std::int64_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            default: // anything else not supported (yet)
+            {
+                std::array<char, 3> cr{{}};
+                static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                const std::string cr_str{cr.data()};
+                return sax->parse_error(element_type_parse_position, cr_str,
+                                        parse_error::create(114, element_type_parse_position, concat("Unsupported BSON record type 0x", cr_str), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief Read a BSON element list (as specified in the BSON-spec)
+
+    The same binary layout is used for objects and arrays, hence it must be
+    indicated with the argument @a is_array which one is expected
+    (true --> array, false --> object).
+
+    @param[in] is_array Determines if the element list being read is to be
+                        treated as an object (@a is_array == false), or as an
+                        array (@a is_array == true).
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_list(const bool is_array)
+    {
+        string_t key;
+
+        while (auto element_type = get())
+        {
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "element list")))
+            {
+                return false;
+            }
+
+            const std::size_t element_type_parse_position = chars_read;
+            if (JSON_HEDLEY_UNLIKELY(!get_bson_cstr(key)))
+            {
+                return false;
+            }
+
+            if (!is_array && !sax->key(key))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_internal(element_type, element_type_parse_position)))
+            {
+                return false;
+            }
+
+            // get_bson_cstr only appends
+            key.clear();
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief Reads an array from the BSON input and passes it to the SAX-parser.
+    @return whether a valid BSON-array was passed to the SAX parser
+    */
+    bool parse_bson_array()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/true)))
+        {
+            return false;
+        }
+
+        return sax->end_array();
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true) or whether the last read character should
+                         be considered instead (false)
+    @param[in] tag_handler how CBOR tags should be treated
+
+    @return whether a valid CBOR value was passed to the SAX parser
+    */
+    bool parse_cbor_internal(const bool get_char,
+                             const cbor_tag_handler_t tag_handler)
+    {
+        switch (get_char ? get() : current)
+        {
+            // EOF
+            case char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::cbor, "value");
+
+            // Integer 0x00..0x17 (0..23)
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            case 0x18: // Unsigned integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x19: // Unsigned integer (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1A: // Unsigned integer (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1B: // Unsigned integer (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            // Negative integer -1-0x00..-1-0x17 (-1..-24)
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+                return sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - current));
+
+            case 0x38: // Negative integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3A: // Negative integer -1-n (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3B: // Negative integer -1-n (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
+                        - static_cast<number_integer_t>(number));
+            }
+
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            case 0x5F: // Binary data (indefinite length)
+            {
+                binary_t b;
+                return get_cbor_binary(b) && sax->binary(b);
+            }
+
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                string_t s;
+                return get_cbor_string(s) && sax->string(s);
+            }
+
+            // array (0x00..0x17 data items follow)
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+                return get_cbor_array(
+                           conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0x98: // array (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x99: // array (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9A: // array (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9B: // array (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9F: // array (indefinite length)
+                return get_cbor_array(static_cast<std::size_t>(-1), tag_handler);
+
+            // map (0x00..0x17 pairs of data items follow)
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+                return get_cbor_object(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0xB8: // map (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xB9: // map (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBA: // map (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBB: // map (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBF: // map (indefinite length)
+                return get_cbor_object(static_cast<std::size_t>(-1), tag_handler);
+
+            case 0xC6: // tagged item
+            case 0xC7:
+            case 0xC8:
+            case 0xC9:
+            case 0xCA:
+            case 0xCB:
+            case 0xCC:
+            case 0xCD:
+            case 0xCE:
+            case 0xCF:
+            case 0xD0:
+            case 0xD1:
+            case 0xD2:
+            case 0xD3:
+            case 0xD4:
+            case 0xD8: // tagged item (1 bytes follow)
+            case 0xD9: // tagged item (2 bytes follow)
+            case 0xDA: // tagged item (4 bytes follow)
+            case 0xDB: // tagged item (8 bytes follow)
+            {
+                switch (tag_handler)
+                {
+                    case cbor_tag_handler_t::error:
+                    {
+                        auto last_token = get_token_string();
+                        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                                exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
+                    }
+
+                    case cbor_tag_handler_t::ignore:
+                    {
+                        // ignore binary subtype
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            default:
+                                break;
+                        }
+                        return parse_cbor_internal(true, tag_handler);
+                    }
+
+                    case cbor_tag_handler_t::store:
+                    {
+                        binary_t b;
+                        // use binary subtype and store in binary container
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            default:
+                                return parse_cbor_internal(true, tag_handler);
+                        }
+                        get();
+                        return get_cbor_binary(b) && sax->binary(b);
+                    }
+
+                    default:                 // LCOV_EXCL_LINE
+                        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+                        return false;        // LCOV_EXCL_LINE
+                }
+            }
+
+            case 0xF4: // false
+                return sax->boolean(false);
+
+            case 0xF5: // true
+                return sax->boolean(true);
+
+            case 0xF6: // null
+                return sax->null();
+
+            case 0xF9: // Half-Precision Float (two-byte IEEE 754)
+            {
+                const auto byte1_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+                const auto byte2_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+
+                const auto byte1 = static_cast<unsigned char>(byte1_raw);
+                const auto byte2 = static_cast<unsigned char>(byte2_raw);
+
+                // code from RFC 7049, Appendix D, Figure 3:
+                // As half-precision floating-point numbers were only added
+                // to IEEE 754 in 2008, today's programming platforms often
+                // still only have limited support for them. It is very
+                // easy to include at least decoding support for them even
+                // without such support. An example of a small decoder for
+                // half-precision floating-point numbers in the C language
+                // is shown in Fig. 3.
+                const auto half = static_cast<unsigned int>((byte1 << 8u) + byte2);
+                const double val = [&half]
+                {
+                    const int exp = (half >> 10u) & 0x1Fu;
+                    const unsigned int mant = half & 0x3FFu;
+                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(mant <= 1024);
+                    switch (exp)
+                    {
+                        case 0:
+                            return std::ldexp(mant, -24);
+                        case 31:
+                            return (mant == 0)
+                            ? std::numeric_limits<double>::infinity()
+                            : std::numeric_limits<double>::quiet_NaN();
+                        default:
+                            return std::ldexp(mant + 1024, exp - 25);
+                    }
+                }();
+                return sax->number_float((half & 0x8000u) != 0
+                                         ? static_cast<number_float_t>(-val)
+                                         : static_cast<number_float_t>(val), "");
+            }
+
+            case 0xFA: // Single-Precision Float (four-byte IEEE 754)
+            {
+                float number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xFB: // Double-Precision Float (eight-byte IEEE 754)
+            {
+                double number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            default: // anything else (0xFF is handled inside the other types)
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+    Additionally, CBOR's strings with indefinite lengths are supported.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_cbor_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            {
+                return get_string(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    string_t chunk;
+                    if (!get_cbor_string(chunk))
+                    {
+                        return false;
+                    }
+                    result.append(chunk);
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::cbor, concat("expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x", last_token), "string"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into the byte array.
+    Additionally, CBOR's byte arrays with indefinite lengths are supported.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_cbor_binary(binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "binary")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            {
+                return get_binary(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5F: // Binary data (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    binary_t chunk;
+                    if (!get_cbor_binary(chunk))
+                    {
+                        return false;
+                    }
+                    result.insert(result.end(), chunk.begin(), chunk.end());
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::cbor, concat("expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x", last_token), "binary"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array or static_cast<std::size_t>(-1) for an
+                    array of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether array creation completed
+    */
+    bool get_cbor_array(const std::size_t len,
+                        const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        if (len != static_cast<std::size_t>(-1))
+        {
+            for (std::size_t i = 0; i < len; ++i)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+        else
+        {
+            while (get() != 0xFF)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(false, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object or static_cast<std::size_t>(-1) for an
+                    object of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether object creation completed
+    */
+    bool get_cbor_object(const std::size_t len,
+                         const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        if (len != 0)
+        {
+            string_t key;
+            if (len != static_cast<std::size_t>(-1))
+            {
+                for (std::size_t i = 0; i < len; ++i)
+                {
+                    get();
+                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                while (get() != 0xFF)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    /*!
+    @return whether a valid MessagePack value was passed to the SAX parser
+    */
+    bool parse_msgpack_internal()
+    {
+        switch (get())
+        {
+            // EOF
+            case char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::msgpack, "value");
+
+            // positive fixint
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+            case 0x18:
+            case 0x19:
+            case 0x1A:
+            case 0x1B:
+            case 0x1C:
+            case 0x1D:
+            case 0x1E:
+            case 0x1F:
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+            case 0x38:
+            case 0x39:
+            case 0x3A:
+            case 0x3B:
+            case 0x3C:
+            case 0x3D:
+            case 0x3E:
+            case 0x3F:
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58:
+            case 0x59:
+            case 0x5A:
+            case 0x5B:
+            case 0x5C:
+            case 0x5D:
+            case 0x5E:
+            case 0x5F:
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78:
+            case 0x79:
+            case 0x7A:
+            case 0x7B:
+            case 0x7C:
+            case 0x7D:
+            case 0x7E:
+            case 0x7F:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            // fixmap
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+                return get_msgpack_object(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixarray
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+            case 0x98:
+            case 0x99:
+            case 0x9A:
+            case 0x9B:
+            case 0x9C:
+            case 0x9D:
+            case 0x9E:
+            case 0x9F:
+                return get_msgpack_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            case 0xD9: // str 8
+            case 0xDA: // str 16
+            case 0xDB: // str 32
+            {
+                string_t s;
+                return get_msgpack_string(s) && sax->string(s);
+            }
+
+            case 0xC0: // nil
+                return sax->null();
+
+            case 0xC2: // false
+                return sax->boolean(false);
+
+            case 0xC3: // true
+                return sax->boolean(true);
+
+            case 0xC4: // bin 8
+            case 0xC5: // bin 16
+            case 0xC6: // bin 32
+            case 0xC7: // ext 8
+            case 0xC8: // ext 16
+            case 0xC9: // ext 32
+            case 0xD4: // fixext 1
+            case 0xD5: // fixext 2
+            case 0xD6: // fixext 4
+            case 0xD7: // fixext 8
+            case 0xD8: // fixext 16
+            {
+                binary_t b;
+                return get_msgpack_binary(b) && sax->binary(b);
+            }
+
+            case 0xCA: // float 32
+            {
+                float number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCB: // float 64
+            {
+                double number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCC: // uint 8
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCD: // uint 16
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCE: // uint 32
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCF: // uint 64
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xD0: // int 8
+            {
+                std::int8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD1: // int 16
+            {
+                std::int16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD2: // int 32
+            {
+                std::int32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD3: // int 64
+            {
+                std::int64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xDC: // array 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(static_cast<std::size_t>(len));
+            }
+
+            case 0xDD: // array 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(conditional_static_cast<std::size_t>(len));
+            }
+
+            case 0xDE: // map 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(static_cast<std::size_t>(len));
+            }
+
+            case 0xDF: // map 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(conditional_static_cast<std::size_t>(len));
+            }
+
+            // negative fixint
+            case 0xE0:
+            case 0xE1:
+            case 0xE2:
+            case 0xE3:
+            case 0xE4:
+            case 0xE5:
+            case 0xE6:
+            case 0xE7:
+            case 0xE8:
+            case 0xE9:
+            case 0xEA:
+            case 0xEB:
+            case 0xEC:
+            case 0xED:
+            case 0xEE:
+            case 0xEF:
+            case 0xF0:
+            case 0xF1:
+            case 0xF2:
+            case 0xF3:
+            case 0xF4:
+            case 0xF5:
+            case 0xF6:
+            case 0xF7:
+            case 0xF8:
+            case 0xF9:
+            case 0xFA:
+            case 0xFB:
+            case 0xFC:
+            case 0xFD:
+            case 0xFE:
+            case 0xFF:
+                return sax->number_integer(static_cast<std::int8_t>(current));
+
+            default: // anything else
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format_t::msgpack, concat("invalid byte: 0x", last_token), "value"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_msgpack_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::msgpack, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            {
+                return get_string(input_format_t::msgpack, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0xD9: // str 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDA: // str 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDB: // str 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::msgpack, concat("expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x", last_token), "string"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into a byte array.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_msgpack_binary(binary_t& result)
+    {
+        // helper function to set the subtype
+        auto assign_and_return_true = [&result](std::int8_t subtype)
+        {
+            result.set_subtype(static_cast<std::uint8_t>(subtype));
+            return true;
+        };
+
+        switch (current)
+        {
+            case 0xC4: // bin 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC5: // bin 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC6: // bin 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC7: // ext 8
+            {
+                std::uint8_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC8: // ext 16
+            {
+                std::uint16_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC9: // ext 32
+            {
+                std::uint32_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD4: // fixext 1
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 1, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD5: // fixext 2
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 2, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD6: // fixext 4
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 4, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD7: // fixext 8
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 8, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD8: // fixext 16
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 16, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            default:           // LCOV_EXCL_LINE
+                return false;  // LCOV_EXCL_LINE
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array
+    @return whether array creation completed
+    */
+    bool get_msgpack_array(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object
+    @return whether object creation completed
+    */
+    bool get_msgpack_object(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        string_t key;
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!get_msgpack_string(key) || !sax->key(key)))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+            key.clear();
+        }
+
+        return sax->end_object();
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether a valid UBJSON value was passed to the SAX parser
+    */
+    bool parse_ubjson_internal(const bool get_char = true)
+    {
+        return get_ubjson_value(get_char ? get_ignore_noop() : current);
+    }
+
+    /*!
+    @brief reads a UBJSON string
+
+    This function is either called after reading the 'S' byte explicitly
+    indicating a string, or in case of an object key where the 'S' byte can be
+    left out.
+
+    @param[out] result   created string
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether string creation completed
+    */
+    bool get_ubjson_string(string_t& result, const bool get_char = true)
+    {
+        if (get_char)
+        {
+            get();  // TODO(niels): may we ignore N here?
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "value")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            case 'U':
+            {
+                std::uint8_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'i':
+            {
+                std::int8_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'I':
+            {
+                std::int16_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'l':
+            {
+                std::int32_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'L':
+            {
+                std::int64_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            default:
+                break;
+        }
+        auto last_token = get_token_string();
+        std::string message;
+
+        if (input_format != input_format_t::bjdata)
+        {
+            message = "expected length type specification (U, i, I, l, L); last byte: 0x" + last_token;
+        }
+        else
+        {
+            message = "expected length type specification (U, i, u, I, m, l, M, L); last byte: 0x" + last_token;
+        }
+        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format, message, "string"), nullptr));
+    }
+
+    /*!
+    @param[out] dim  an integer vector storing the ND array dimensions
+    @return whether reading ND array size vector is successful
+    */
+    bool get_ubjson_ndarray_size(std::vector<size_t>& dim)
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        size_t dimlen = 0;
+        bool no_ndarray = true;
+
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type, no_ndarray)))
+        {
+            return false;
+        }
+
+        if (size_and_type.first != npos)
+        {
+            if (size_and_type.second != 0)
+            {
+                if (size_and_type.second != 'N')
+                {
+                    for (std::size_t i = 0; i < size_and_type.first; ++i)
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray, size_and_type.second)))
+                        {
+                            return false;
+                        }
+                        dim.push_back(dimlen);
+                    }
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray)))
+                    {
+                        return false;
+                    }
+                    dim.push_back(dimlen);
+                }
+            }
+        }
+        else
+        {
+            while (current != ']')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray, current)))
+                {
+                    return false;
+                }
+                dim.push_back(dimlen);
+                get_ignore_noop();
+            }
+        }
+        return true;
+    }
+
+    /*!
+    @param[out] result  determined size
+    @param[in,out] is_ndarray  for input, `true` means already inside an ndarray vector
+                               or ndarray dimension is not allowed; `false` means ndarray
+                               is allowed; for output, `true` means an ndarray is found;
+                               is_ndarray can only return `true` when its initial value
+                               is `false`
+    @param[in] prefix  type marker if already read, otherwise set to 0
+
+    @return whether size determination completed
+    */
+    bool get_ubjson_size_value(std::size_t& result, bool& is_ndarray, char_int_type prefix = 0)
+    {
+        if (prefix == 0)
+        {
+            prefix = get_ignore_noop();
+        }
+
+        switch (prefix)
+        {
+            case 'U':
+            {
+                std::uint8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number); // NOLINT(bugprone-signed-char-misuse,cert-str34-c): number is not a char
+                return true;
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                if (!value_in_range_of<std::size_t>(number))
+                {
+                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = conditional_static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (!value_in_range_of<std::size_t>(number))
+                {
+                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
+                }
+                result = detail::conditional_static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case '[':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                if (is_ndarray) // ndarray dimensional vector can only contain integers, and can not embed another array
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read, exception_message(input_format, "ndarray dimensional vector is not allowed", "size"), nullptr));
+                }
+                std::vector<size_t> dim;
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_ndarray_size(dim)))
+                {
+                    return false;
+                }
+                if (dim.size() == 1 || (dim.size() == 2 && dim.at(0) == 1)) // return normal array size if 1D row vector
+                {
+                    result = dim.at(dim.size() - 1);
+                    return true;
+                }
+                if (!dim.empty())  // if ndarray, convert to an object in JData annotated array format
+                {
+                    for (auto i : dim) // test if any dimension in an ndarray is 0, if so, return a 1D empty container
+                    {
+                        if ( i == 0 )
+                        {
+                            result = 0;
+                            return true;
+                        }
+                    }
+
+                    string_t key = "_ArraySize_";
+                    if (JSON_HEDLEY_UNLIKELY(!sax->start_object(3) || !sax->key(key) || !sax->start_array(dim.size())))
+                    {
+                        return false;
+                    }
+                    result = 1;
+                    for (auto i : dim)
+                    {
+                        result *= i;
+                        if (result == 0 || result == npos) // because dim elements shall not have zeros, result = 0 means overflow happened; it also can't be npos as it is used to initialize size in get_ubjson_size_type()
+                        {
+                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408, exception_message(input_format, "excessive ndarray size caused overflow", "size"), nullptr));
+                        }
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(static_cast<number_unsigned_t>(i))))
+                        {
+                            return false;
+                        }
+                    }
+                    is_ndarray = true;
+                    return sax->end_array();
+                }
+                result = 0;
+                return true;
+            }
+
+            default:
+                break;
+        }
+        auto last_token = get_token_string();
+        std::string message;
+
+        if (input_format != input_format_t::bjdata)
+        {
+            message = "expected length type specification (U, i, I, l, L) after '#'; last byte: 0x" + last_token;
+        }
+        else
+        {
+            message = "expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x" + last_token;
+        }
+        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format, message, "size"), nullptr));
+    }
+
+    /*!
+    @brief determine the type and size for a container
+
+    In the optimized UBJSON format, a type and a size can be provided to allow
+    for a more compact representation.
+
+    @param[out] result  pair of the size and the type
+    @param[in] inside_ndarray  whether the parser is parsing an ND array dimensional vector
+
+    @return whether pair creation completed
+    */
+    bool get_ubjson_size_type(std::pair<std::size_t, char_int_type>& result, bool inside_ndarray = false)
+    {
+        result.first = npos; // size
+        result.second = 0; // type
+        bool is_ndarray = false;
+
+        get_ignore_noop();
+
+        if (current == '$')
+        {
+            result.second = get();  // must not ignore 'N', because 'N' maybe the type
+            if (input_format == input_format_t::bjdata
+                    && JSON_HEDLEY_UNLIKELY(std::binary_search(bjd_optimized_type_markers.begin(), bjd_optimized_type_markers.end(), result.second)))
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, concat("marker 0x", last_token, " is not a permitted optimized array type"), "type"), nullptr));
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "type")))
+            {
+                return false;
+            }
+
+            get_ignore_noop();
+            if (JSON_HEDLEY_UNLIKELY(current != '#'))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "value")))
+                {
+                    return false;
+                }
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, concat("expected '#' after type information; last byte: 0x", last_token), "size"), nullptr));
+            }
+
+            const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
+            if (input_format == input_format_t::bjdata && is_ndarray)
+            {
+                if (inside_ndarray)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
+                                            exception_message(input_format, "ndarray can not be recursive", "size"), nullptr));
+                }
+                result.second |= (1 << 8); // use bit 8 to indicate ndarray, all UBJSON and BJData markers should be ASCII letters
+            }
+            return is_error;
+        }
+
+        if (current == '#')
+        {
+            const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
+            if (input_format == input_format_t::bjdata && is_ndarray)
+            {
+                return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
+                                        exception_message(input_format, "ndarray requires both type and size", "size"), nullptr));
+            }
+            return is_error;
+        }
+
+        return true;
+    }
+
+    /*!
+    @param prefix  the previously read or set type prefix
+    @return whether value creation completed
+    */
+    bool get_ubjson_value(const char_int_type prefix)
+    {
+        switch (prefix)
+        {
+            case char_traits<char_type>::eof():  // EOF
+                return unexpect_eof(input_format, "value");
+
+            case 'T':  // true
+                return sax->boolean(true);
+            case 'F':  // false
+                return sax->boolean(false);
+
+            case 'Z':  // null
+                return sax->null();
+
+            case 'U':
+            {
+                std::uint8_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'h':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                const auto byte1_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+                {
+                    return false;
+                }
+                const auto byte2_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+                {
+                    return false;
+                }
+
+                const auto byte1 = static_cast<unsigned char>(byte1_raw);
+                const auto byte2 = static_cast<unsigned char>(byte2_raw);
+
+                // code from RFC 7049, Appendix D, Figure 3:
+                // As half-precision floating-point numbers were only added
+                // to IEEE 754 in 2008, today's programming platforms often
+                // still only have limited support for them. It is very
+                // easy to include at least decoding support for them even
+                // without such support. An example of a small decoder for
+                // half-precision floating-point numbers in the C language
+                // is shown in Fig. 3.
+                const auto half = static_cast<unsigned int>((byte2 << 8u) + byte1);
+                const double val = [&half]
+                {
+                    const int exp = (half >> 10u) & 0x1Fu;
+                    const unsigned int mant = half & 0x3FFu;
+                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(mant <= 1024);
+                    switch (exp)
+                    {
+                        case 0:
+                            return std::ldexp(mant, -24);
+                        case 31:
+                            return (mant == 0)
+                            ? std::numeric_limits<double>::infinity()
+                            : std::numeric_limits<double>::quiet_NaN();
+                        default:
+                            return std::ldexp(mant + 1024, exp - 25);
+                    }
+                }();
+                return sax->number_float((half & 0x8000u) != 0
+                                         ? static_cast<number_float_t>(-val)
+                                         : static_cast<number_float_t>(val), "");
+            }
+
+            case 'd':
+            {
+                float number{};
+                return get_number(input_format, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'D':
+            {
+                double number{};
+                return get_number(input_format, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'H':
+            {
+                return get_ubjson_high_precision_number();
+            }
+
+            case 'C':  // char
+            {
+                get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "char")))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(current > 127))
+                {
+                    auto last_token = get_token_string();
+                    return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                            exception_message(input_format, concat("byte after 'C' must be in range 0x00..0x7F; last byte: 0x", last_token), "char"), nullptr));
+                }
+                string_t s(1, static_cast<typename string_t::value_type>(current));
+                return sax->string(s);
+            }
+
+            case 'S':  // string
+            {
+                string_t s;
+                return get_ubjson_string(s) && sax->string(s);
+            }
+
+            case '[':  // array
+                return get_ubjson_array();
+
+            case '{':  // object
+                return get_ubjson_object();
+
+            default: // anything else
+                break;
+        }
+        auto last_token = get_token_string();
+        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format, "invalid byte: 0x" + last_token, "value"), nullptr));
+    }
+
+    /*!
+    @return whether array creation completed
+    */
+    bool get_ubjson_array()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        // if bit-8 of size_and_type.second is set to 1, encode bjdata ndarray as an object in JData annotated array format (https://github.com/NeuroJSON/jdata):
+        // {"_ArrayType_" : "typeid", "_ArraySize_" : [n1, n2, ...], "_ArrayData_" : [v1, v2, ...]}
+
+        if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
+        {
+            size_and_type.second &= ~(static_cast<char_int_type>(1) << 8);  // use bit 8 to indicate ndarray, here we remove the bit to restore the type marker
+            auto it = std::lower_bound(bjd_types_map.begin(), bjd_types_map.end(), size_and_type.second, [](const bjd_type & p, char_int_type t)
+            {
+                return p.first < t;
+            });
+            string_t key = "_ArrayType_";
+            if (JSON_HEDLEY_UNLIKELY(it == bjd_types_map.end() || it->first != size_and_type.second))
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, "invalid byte: 0x" + last_token, "type"), nullptr));
+            }
+
+            string_t type = it->second; // sax->string() takes a reference
+            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->string(type)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second == 'C')
+            {
+                size_and_type.second = 'U';
+            }
+
+            key = "_ArrayData_";
+            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->start_array(size_and_type.first) ))
+            {
+                return false;
+            }
+
+            for (std::size_t i = 0; i < size_and_type.first; ++i)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                {
+                    return false;
+                }
+            }
+
+            return (sax->end_array() && sax->end_object());
+        }
+
+        if (size_and_type.first != npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                if (size_and_type.second != 'N')
+                {
+                    for (std::size_t i = 0; i < size_and_type.first; ++i)
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                        {
+                            return false;
+                        }
+                    }
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+            {
+                return false;
+            }
+
+            while (current != ']')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal(false)))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @return whether object creation completed
+    */
+    bool get_ubjson_object()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        // do not accept ND-array size in objects in BJData
+        if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format, "BJData object does not support ND-array size in optimized format", "object"), nullptr));
+        }
+
+        string_t key;
+        if (size_and_type.first != npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+            {
+                return false;
+            }
+
+            while (current != '}')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key, false) || !sax->key(key)))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+                key.clear();
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    // Note, no reader for UBJSON binary types is implemented because they do
+    // not exist
+
+    bool get_ubjson_high_precision_number()
+    {
+        // get size of following number string
+        std::size_t size{};
+        bool no_ndarray = true;
+        auto res = get_ubjson_size_value(size, no_ndarray);
+        if (JSON_HEDLEY_UNLIKELY(!res))
+        {
+            return res;
+        }
+
+        // get number string
+        std::vector<char> number_vector;
+        for (std::size_t i = 0; i < size; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+            {
+                return false;
+            }
+            number_vector.push_back(static_cast<char>(current));
+        }
+
+        // parse number string
+        using ia_type = decltype(detail::input_adapter(number_vector));
+        auto number_lexer = detail::lexer<BasicJsonType, ia_type>(detail::input_adapter(number_vector), false);
+        const auto result_number = number_lexer.scan();
+        const auto number_string = number_lexer.get_token_string();
+        const auto result_remainder = number_lexer.scan();
+
+        using token_type = typename detail::lexer_base<BasicJsonType>::token_type;
+
+        if (JSON_HEDLEY_UNLIKELY(result_remainder != token_type::end_of_input))
+        {
+            return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+                                    exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
+        }
+
+        switch (result_number)
+        {
+            case token_type::value_integer:
+                return sax->number_integer(number_lexer.get_number_integer());
+            case token_type::value_unsigned:
+                return sax->number_unsigned(number_lexer.get_number_unsigned());
+            case token_type::value_float:
+                return sax->number_float(number_lexer.get_number_float(), std::move(number_string));
+            case token_type::uninitialized:
+            case token_type::literal_true:
+            case token_type::literal_false:
+            case token_type::literal_null:
+            case token_type::value_string:
+            case token_type::begin_array:
+            case token_type::begin_object:
+            case token_type::end_array:
+            case token_type::end_object:
+            case token_type::name_separator:
+            case token_type::value_separator:
+            case token_type::parse_error:
+            case token_type::end_of_input:
+            case token_type::literal_or_value:
+            default:
+                return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+                                        exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
+        }
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*!
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a -'ve valued
+    `char_traits<char_type>::eof()` in that case.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++chars_read;
+        return current = ia.get_character();
+    }
+
+    /*!
+    @brief get_to read into a primitive type
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns false instead
+
+    @return bool, whether the read was successful
+    */
+    template<class T>
+    bool get_to(T& dest, const input_format_t format, const char* context)
+    {
+        auto new_chars_read = ia.get_elements(&dest);
+        chars_read += new_chars_read;
+        if (JSON_HEDLEY_UNLIKELY(new_chars_read < sizeof(T)))
+        {
+            // in case of failure, advance position by 1 to report failing location
+            ++chars_read;
+            sax->parse_error(chars_read, "<end of file>", parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context), nullptr));
+            return false;
+        }
+        return true;
+    }
+
+    /*!
+    @return character read from the input after ignoring all 'N' entries
+    */
+    char_int_type get_ignore_noop()
+    {
+        do
+        {
+            get();
+        }
+        while (current == 'N');
+
+        return current;
+    }
+
+    template<class NumberType>
+    static void byte_swap(NumberType& number)
+    {
+        constexpr std::size_t sz = sizeof(number);
+#ifdef __cpp_lib_byteswap
+        if constexpr (sz == 1)
+        {
+            return;
+        }
+        if constexpr(std::is_integral_v<NumberType>)
+        {
+            number = std::byteswap(number);
+            return;
+        }
+#endif
+        auto* ptr = reinterpret_cast<std::uint8_t*>(&number);
+        for (std::size_t i = 0; i < sz / 2; ++i)
+        {
+            std::swap(ptr[i], ptr[sz - i - 1]);
+        }
+    }
+
+    /*
+    @brief read a number from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format   the current format (for diagnostics)
+    @param[out] result  number of type @a NumberType
+
+    @return whether conversion completed
+
+    @note This function needs to respect the system's endianness, because
+          bytes in CBOR, MessagePack, and UBJSON are stored in network order
+          (big endian) and therefore need reordering on little endian systems.
+          On the other hand, BSON and BJData use little endian and should reorder
+          on big endian systems.
+    */
+    template<typename NumberType, bool InputIsLittleEndian = false>
+    bool get_number(const input_format_t format, NumberType& result)
+    {
+        // read in the original format
+
+        if (JSON_HEDLEY_UNLIKELY(!get_to(result, format, "number")))
+        {
+            return false;
+        }
+        if (is_little_endian != (InputIsLittleEndian || format == input_format_t::bjdata))
+        {
+            byte_swap(result);
+        }
+        return true;
+    }
+
+    /*!
+    @brief create a string by reading characters from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of characters to read
+    @param[out] result string created by reading @a len bytes
+
+    @return whether string creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of string memory.
+    */
+    template<typename NumberType>
+    bool get_string(const input_format_t format,
+                    const NumberType len,
+                    string_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "string")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<typename string_t::value_type>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @brief create a byte array by reading bytes from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of bytes to read
+    @param[out] result byte array created by reading @a len bytes
+
+    @return whether byte array creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of memory.
+    */
+    template<typename NumberType>
+    bool get_binary(const input_format_t format,
+                    const NumberType len,
+                    binary_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "binary")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<std::uint8_t>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @param[in] format   the current format (for diagnostics)
+    @param[in] context  further context information (for diagnostics)
+    @return whether the last read character is not EOF
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool unexpect_eof(const input_format_t format, const char* context) const
+    {
+        if (JSON_HEDLEY_UNLIKELY(current == char_traits<char_type>::eof()))
+        {
+            return sax->parse_error(chars_read, "<end of file>",
+                                    parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context), nullptr));
+        }
+        return true;
+    }
+
+    /*!
+    @return a string representation of the last read byte
+    */
+    std::string get_token_string() const
+    {
+        std::array<char, 3> cr{{}};
+        static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        return std::string{cr.data()};
+    }
+
+    /*!
+    @param[in] format   the current format
+    @param[in] detail   a detailed error message
+    @param[in] context  further context information
+    @return a message string to use in the parse_error exceptions
+    */
+    std::string exception_message(const input_format_t format,
+                                  const std::string& detail,
+                                  const std::string& context) const
+    {
+        std::string error_msg = "syntax error while parsing ";
+
+        switch (format)
+        {
+            case input_format_t::cbor:
+                error_msg += "CBOR";
+                break;
+
+            case input_format_t::msgpack:
+                error_msg += "MessagePack";
+                break;
+
+            case input_format_t::ubjson:
+                error_msg += "UBJSON";
+                break;
+
+            case input_format_t::bson:
+                error_msg += "BSON";
+                break;
+
+            case input_format_t::bjdata:
+                error_msg += "BJData";
+                break;
+
+            case input_format_t::json: // LCOV_EXCL_LINE
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+        return concat(error_msg, ' ', context, ": ", detail);
+    }
+
+  private:
+    static JSON_INLINE_VARIABLE constexpr std::size_t npos = static_cast<std::size_t>(-1);
+
+    /// input adapter
+    InputAdapterType ia;
+
+    /// the current character
+    char_int_type current = char_traits<char_type>::eof();
+
+    /// the number of characters read
+    std::size_t chars_read = 0;
+
+    /// whether we can assume little endianness
+    const bool is_little_endian = little_endianness();
+
+    /// input format
+    const input_format_t input_format = input_format_t::json;
+
+    /// the SAX parser
+    json_sax_t* sax = nullptr;
+
+    // excluded markers in bjdata optimized type
+#define JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_ \
+    make_array<char_int_type>('F', 'H', 'N', 'S', 'T', 'Z', '[', '{')
+
+#define JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_ \
+    make_array<bjd_type>(                      \
+    bjd_type{'C', "char"},                     \
+    bjd_type{'D', "double"},                   \
+    bjd_type{'I', "int16"},                    \
+    bjd_type{'L', "int64"},                    \
+    bjd_type{'M', "uint64"},                   \
+    bjd_type{'U', "uint8"},                    \
+    bjd_type{'d', "single"},                   \
+    bjd_type{'i', "int8"},                     \
+    bjd_type{'l', "int32"},                    \
+    bjd_type{'m', "uint32"},                   \
+    bjd_type{'u', "uint16"})
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // lookup tables
+    // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
+    const decltype(JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_) bjd_optimized_type_markers =
+        JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_;
+
+    using bjd_type = std::pair<char_int_type, string_t>;
+    // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
+    const decltype(JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_) bjd_types_map =
+        JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_;
+
+#undef JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_
+#undef JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_
+};
+
+#ifndef JSON_HAS_CPP_17
+    template<typename BasicJsonType, typename InputAdapterType, typename SAX>
+    constexpr std::size_t binary_reader<BasicJsonType, InputAdapterType, SAX>::npos;
+#endif
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/input_adapters.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/input_adapters.hpp
new file mode 100644
index 00000000..1fb132d3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/input_adapters.hpp
@@ -0,0 +1,549 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstring> // strlen
+#include <iterator> // begin, end, iterator_traits, random_access_iterator_tag, distance, next
+#include <memory> // shared_ptr, make_shared, addressof
+#include <numeric> // accumulate
+#include <string> // string, char_traits
+#include <type_traits> // enable_if, is_base_of, is_pointer, is_integral, remove_pointer
+#include <utility> // pair, declval
+
+#ifndef JSON_NO_IO
+    #include <cstdio>   // FILE *
+    #include <istream>  // istream
+#endif                  // JSON_NO_IO
+
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/iterators/iterator_traits.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// the supported input formats
+enum class input_format_t { json, cbor, msgpack, ubjson, bson, bjdata };
+
+////////////////////
+// input adapters //
+////////////////////
+
+#ifndef JSON_NO_IO
+/*!
+Input adapter for stdio file access. This adapter read only 1 byte and do not use any
+ buffer. This adapter is a very low level adapter.
+*/
+class file_input_adapter
+{
+  public:
+    using char_type = char;
+
+    JSON_HEDLEY_NON_NULL(2)
+    explicit file_input_adapter(std::FILE* f) noexcept
+        : m_file(f)
+    {
+        JSON_ASSERT(m_file != nullptr);
+    }
+
+    // make class move-only
+    file_input_adapter(const file_input_adapter&) = delete;
+    file_input_adapter(file_input_adapter&&) noexcept = default;
+    file_input_adapter& operator=(const file_input_adapter&) = delete;
+    file_input_adapter& operator=(file_input_adapter&&) = delete;
+    ~file_input_adapter() = default;
+
+    std::char_traits<char>::int_type get_character() noexcept
+    {
+        return std::fgetc(m_file);
+    }
+
+    // returns the number of characters successfully read
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        return fread(dest, 1, sizeof(T) * count, m_file);
+    }
+
+  private:
+    /// the file pointer to read from
+    std::FILE* m_file;
+};
+
+/*!
+Input adapter for a (caching) istream. Ignores a UFT Byte Order Mark at
+beginning of input. Does not support changing the underlying std::streambuf
+in mid-input. Maintains underlying std::istream and std::streambuf to support
+subsequent use of standard std::istream operations to process any input
+characters following those used in parsing the JSON input.  Clears the
+std::istream flags; any input errors (e.g., EOF) will be detected by the first
+subsequent call for input from the std::istream.
+*/
+class input_stream_adapter
+{
+  public:
+    using char_type = char;
+
+    ~input_stream_adapter()
+    {
+        // clear stream flags; we use underlying streambuf I/O, do not
+        // maintain ifstream flags, except eof
+        if (is != nullptr)
+        {
+            is->clear(is->rdstate() & std::ios::eofbit);
+        }
+    }
+
+    explicit input_stream_adapter(std::istream& i)
+        : is(&i), sb(i.rdbuf())
+    {}
+
+    // delete because of pointer members
+    input_stream_adapter(const input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&&) = delete;
+
+    input_stream_adapter(input_stream_adapter&& rhs) noexcept
+        : is(rhs.is), sb(rhs.sb)
+    {
+        rhs.is = nullptr;
+        rhs.sb = nullptr;
+    }
+
+    // std::istream/std::streambuf use std::char_traits<char>::to_int_type, to
+    // ensure that std::char_traits<char>::eof() and the character 0xFF do not
+    // end up as the same value, e.g. 0xFFFFFFFF.
+    std::char_traits<char>::int_type get_character()
+    {
+        auto res = sb->sbumpc();
+        // set eof manually, as we don't use the istream interface.
+        if (JSON_HEDLEY_UNLIKELY(res == std::char_traits<char>::eof()))
+        {
+            is->clear(is->rdstate() | std::ios::eofbit);
+        }
+        return res;
+    }
+
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        auto res = static_cast<std::size_t>(sb->sgetn(reinterpret_cast<char*>(dest), static_cast<std::streamsize>(count * sizeof(T))));
+        if (JSON_HEDLEY_UNLIKELY(res < count * sizeof(T)))
+        {
+            is->clear(is->rdstate() | std::ios::eofbit);
+        }
+        return res;
+    }
+
+  private:
+    /// the associated input stream
+    std::istream* is = nullptr;
+    std::streambuf* sb = nullptr;
+};
+#endif  // JSON_NO_IO
+
+// General-purpose iterator-based adapter. It might not be as fast as
+// theoretically possible for some containers, but it is extremely versatile.
+template<typename IteratorType>
+class iterator_input_adapter
+{
+  public:
+    using char_type = typename std::iterator_traits<IteratorType>::value_type;
+
+    iterator_input_adapter(IteratorType first, IteratorType last)
+        : current(std::move(first)), end(std::move(last))
+    {}
+
+    typename char_traits<char_type>::int_type get_character()
+    {
+        if (JSON_HEDLEY_LIKELY(current != end))
+        {
+            auto result = char_traits<char_type>::to_int_type(*current);
+            std::advance(current, 1);
+            return result;
+        }
+
+        return char_traits<char_type>::eof();
+    }
+
+    // for general iterators, we cannot really do something better than falling back to processing the range one-by-one
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        auto* ptr = reinterpret_cast<char*>(dest);
+        for (std::size_t read_index = 0; read_index < count * sizeof(T); ++read_index)
+        {
+            if (JSON_HEDLEY_LIKELY(current != end))
+            {
+                ptr[read_index] = static_cast<char>(*current);
+                std::advance(current, 1);
+            }
+            else
+            {
+                return read_index;
+            }
+        }
+        return count * sizeof(T);
+    }
+
+  private:
+    IteratorType current;
+    IteratorType end;
+
+    template<typename BaseInputAdapter, size_t T>
+    friend struct wide_string_input_helper;
+
+    bool empty() const
+    {
+        return current == end;
+    }
+};
+
+template<typename BaseInputAdapter, size_t T>
+struct wide_string_input_helper;
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 4>
+{
+    // UTF-32
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-32 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u) & 0x1Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (wc <= 0xFFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u) & 0x0Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else if (wc <= 0x10FFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | ((static_cast<unsigned int>(wc) >> 18u) & 0x07u));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 12u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 4;
+            }
+            else
+            {
+                // unknown character
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+        }
+    }
+};
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 2>
+{
+    // UTF-16
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-16 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (0xD800 > wc || wc >= 0xE000)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else
+            {
+                if (JSON_HEDLEY_UNLIKELY(!input.empty()))
+                {
+                    const auto wc2 = static_cast<unsigned int>(input.get_character());
+                    const auto charcode = 0x10000u + (((static_cast<unsigned int>(wc) & 0x3FFu) << 10u) | (wc2 & 0x3FFu));
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | (charcode >> 18u));
+                    utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 12u) & 0x3Fu));
+                    utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 6u) & 0x3Fu));
+                    utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (charcode & 0x3Fu));
+                    utf8_bytes_filled = 4;
+                }
+                else
+                {
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                    utf8_bytes_filled = 1;
+                }
+            }
+        }
+    }
+};
+
+// Wraps another input adapter to convert wide character types into individual bytes.
+template<typename BaseInputAdapter, typename WideCharType>
+class wide_string_input_adapter
+{
+  public:
+    using char_type = char;
+
+    wide_string_input_adapter(BaseInputAdapter base)
+        : base_adapter(base) {}
+
+    typename std::char_traits<char>::int_type get_character() noexcept
+    {
+        // check if buffer needs to be filled
+        if (utf8_bytes_index == utf8_bytes_filled)
+        {
+            fill_buffer<sizeof(WideCharType)>();
+
+            JSON_ASSERT(utf8_bytes_filled > 0);
+            JSON_ASSERT(utf8_bytes_index == 0);
+        }
+
+        // use buffer
+        JSON_ASSERT(utf8_bytes_filled > 0);
+        JSON_ASSERT(utf8_bytes_index < utf8_bytes_filled);
+        return utf8_bytes[utf8_bytes_index++];
+    }
+
+    // parsing binary with wchar doesn't make sense, but since the parsing mode can be runtime, we need something here
+    template<class T>
+    std::size_t get_elements(T* /*dest*/, std::size_t /*count*/ = 1)
+    {
+        JSON_THROW(parse_error::create(112, 1, "wide string type cannot be interpreted as binary data", nullptr));
+    }
+
+  private:
+    BaseInputAdapter base_adapter;
+
+    template<size_t T>
+    void fill_buffer()
+    {
+        wide_string_input_helper<BaseInputAdapter, T>::fill_buffer(base_adapter, utf8_bytes, utf8_bytes_index, utf8_bytes_filled);
+    }
+
+    /// a buffer for UTF-8 bytes
+    std::array<std::char_traits<char>::int_type, 4> utf8_bytes = {{0, 0, 0, 0}};
+
+    /// index to the utf8_codes array for the next valid byte
+    std::size_t utf8_bytes_index = 0;
+    /// number of valid bytes in the utf8_codes array
+    std::size_t utf8_bytes_filled = 0;
+};
+
+template<typename IteratorType, typename Enable = void>
+struct iterator_input_adapter_factory
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using adapter_type = iterator_input_adapter<iterator_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(std::move(first), std::move(last));
+    }
+};
+
+template<typename T>
+struct is_iterator_of_multibyte
+{
+    using value_type = typename std::iterator_traits<T>::value_type;
+    enum
+    {
+        value = sizeof(value_type) > 1
+    };
+};
+
+template<typename IteratorType>
+struct iterator_input_adapter_factory<IteratorType, enable_if_t<is_iterator_of_multibyte<IteratorType>::value>>
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using base_adapter_type = iterator_input_adapter<iterator_type>;
+    using adapter_type = wide_string_input_adapter<base_adapter_type, char_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(base_adapter_type(std::move(first), std::move(last)));
+    }
+};
+
+// General purpose iterator-based input
+template<typename IteratorType>
+typename iterator_input_adapter_factory<IteratorType>::adapter_type input_adapter(IteratorType first, IteratorType last)
+{
+    using factory_type = iterator_input_adapter_factory<IteratorType>;
+    return factory_type::create(first, last);
+}
+
+// Convenience shorthand from container to iterator
+// Enables ADL on begin(container) and end(container)
+// Encloses the using declarations in namespace for not to leak them to outside scope
+
+namespace container_input_adapter_factory_impl
+{
+
+using std::begin;
+using std::end;
+
+template<typename ContainerType, typename Enable = void>
+struct container_input_adapter_factory {};
+
+template<typename ContainerType>
+struct container_input_adapter_factory< ContainerType,
+       void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))>>
+       {
+           using adapter_type = decltype(input_adapter(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>())));
+
+           static adapter_type create(const ContainerType& container)
+{
+    return input_adapter(begin(container), end(container));
+}
+       };
+
+}  // namespace container_input_adapter_factory_impl
+
+template<typename ContainerType>
+typename container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::adapter_type input_adapter(const ContainerType& container)
+{
+    return container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::create(container);
+}
+
+// specialization for std::string
+using string_input_adapter_type = decltype(input_adapter(std::declval<std::string>()));
+
+#ifndef JSON_NO_IO
+// Special cases with fast paths
+inline file_input_adapter input_adapter(std::FILE* file)
+{
+    if (file == nullptr)
+    {
+        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+    }
+    return file_input_adapter(file);
+}
+
+inline input_stream_adapter input_adapter(std::istream& stream)
+{
+    return input_stream_adapter(stream);
+}
+
+inline input_stream_adapter input_adapter(std::istream&& stream)
+{
+    return input_stream_adapter(stream);
+}
+#endif  // JSON_NO_IO
+
+using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));
+
+// Null-delimited strings, and the like.
+template < typename CharT,
+           typename std::enable_if <
+               std::is_pointer<CharT>::value&&
+               !std::is_array<CharT>::value&&
+               std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+               sizeof(typename std::remove_pointer<CharT>::type) == 1,
+               int >::type = 0 >
+contiguous_bytes_input_adapter input_adapter(CharT b)
+{
+    if (b == nullptr)
+    {
+        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+    }
+    auto length = std::strlen(reinterpret_cast<const char*>(b));
+    const auto* ptr = reinterpret_cast<const char*>(b);
+    return input_adapter(ptr, ptr + length); // cppcheck-suppress[nullPointerArithmeticRedundantCheck]
+}
+
+template<typename T, std::size_t N>
+auto input_adapter(T (&array)[N]) -> decltype(input_adapter(array, array + N)) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+{
+    return input_adapter(array, array + N);
+}
+
+// This class only handles inputs of input_buffer_adapter type.
+// It's required so that expressions like {ptr, len} can be implicitly cast
+// to the correct adapter.
+class span_input_adapter
+{
+  public:
+    template < typename CharT,
+               typename std::enable_if <
+                   std::is_pointer<CharT>::value&&
+                   std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+                   sizeof(typename std::remove_pointer<CharT>::type) == 1,
+                   int >::type = 0 >
+    span_input_adapter(CharT b, std::size_t l)
+        : ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l) {}
+
+    template<class IteratorType,
+             typename std::enable_if<
+                 std::is_same<typename iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value,
+                 int>::type = 0>
+    span_input_adapter(IteratorType first, IteratorType last)
+        : ia(input_adapter(first, last)) {}
+
+    contiguous_bytes_input_adapter&& get()
+    {
+        return std::move(ia); // NOLINT(hicpp-move-const-arg,performance-move-const-arg)
+    }
+
+  private:
+    contiguous_bytes_input_adapter ia;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/json_sax.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/json_sax.hpp
new file mode 100644
index 00000000..f081e4aa
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/json_sax.hpp
@@ -0,0 +1,981 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstddef>
+#include <string> // string
+#include <type_traits> // enable_if_t
+#include <utility> // move
+#include <vector> // vector
+
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/input/lexer.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/*!
+@brief SAX interface
+
+This class describes the SAX interface used by @ref nlohmann::json::sax_parse.
+Each function is called in different situations while the input is parsed. The
+boolean return value informs the parser whether to continue processing the
+input.
+*/
+template<typename BasicJsonType>
+struct json_sax
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    /*!
+    @brief a null value was read
+    @return whether parsing should proceed
+    */
+    virtual bool null() = 0;
+
+    /*!
+    @brief a boolean value was read
+    @param[in] val  boolean value
+    @return whether parsing should proceed
+    */
+    virtual bool boolean(bool val) = 0;
+
+    /*!
+    @brief an integer number was read
+    @param[in] val  integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_integer(number_integer_t val) = 0;
+
+    /*!
+    @brief an unsigned integer number was read
+    @param[in] val  unsigned integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_unsigned(number_unsigned_t val) = 0;
+
+    /*!
+    @brief a floating-point number was read
+    @param[in] val  floating-point value
+    @param[in] s    raw token value
+    @return whether parsing should proceed
+    */
+    virtual bool number_float(number_float_t val, const string_t& s) = 0;
+
+    /*!
+    @brief a string value was read
+    @param[in] val  string value
+    @return whether parsing should proceed
+    @note It is safe to move the passed string value.
+    */
+    virtual bool string(string_t& val) = 0;
+
+    /*!
+    @brief a binary value was read
+    @param[in] val  binary value
+    @return whether parsing should proceed
+    @note It is safe to move the passed binary value.
+    */
+    virtual bool binary(binary_t& val) = 0;
+
+    /*!
+    @brief the beginning of an object was read
+    @param[in] elements  number of object elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_object(std::size_t elements) = 0;
+
+    /*!
+    @brief an object key was read
+    @param[in] val  object key
+    @return whether parsing should proceed
+    @note It is safe to move the passed string.
+    */
+    virtual bool key(string_t& val) = 0;
+
+    /*!
+    @brief the end of an object was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_object() = 0;
+
+    /*!
+    @brief the beginning of an array was read
+    @param[in] elements  number of array elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_array(std::size_t elements) = 0;
+
+    /*!
+    @brief the end of an array was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_array() = 0;
+
+    /*!
+    @brief a parse error occurred
+    @param[in] position    the position in the input where the error occurs
+    @param[in] last_token  the last read token
+    @param[in] ex          an exception object describing the error
+    @return whether parsing should proceed (must return false)
+    */
+    virtual bool parse_error(std::size_t position,
+                             const std::string& last_token,
+                             const detail::exception& ex) = 0;
+
+    json_sax() = default;
+    json_sax(const json_sax&) = default;
+    json_sax(json_sax&&) noexcept = default;
+    json_sax& operator=(const json_sax&) = default;
+    json_sax& operator=(json_sax&&) noexcept = default;
+    virtual ~json_sax() = default;
+};
+
+namespace detail
+{
+/*!
+@brief SAX implementation to create a JSON value from SAX events
+
+This class implements the @ref json_sax interface and processes the SAX events
+to create a JSON value which makes it basically a DOM parser. The structure or
+hierarchy of the JSON value is managed by the stack `ref_stack` which contains
+a pointer to the respective array or object for each recursion depth.
+
+After successful parsing, the value that is passed by reference to the
+constructor contains the parsed value.
+
+@tparam BasicJsonType  the JSON type
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class json_sax_dom_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+
+    /*!
+    @param[in,out] r  reference to a JSON value that is manipulated while
+                       parsing
+    @param[in] allow_exceptions_  whether parse errors yield exceptions
+    */
+    explicit json_sax_dom_parser(BasicJsonType& r, const bool allow_exceptions_ = true, lexer_t* lexer_ = nullptr)
+        : root(r), allow_exceptions(allow_exceptions_), m_lexer_ref(lexer_)
+    {}
+
+    // make class move-only
+    json_sax_dom_parser(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser& operator=(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~json_sax_dom_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::object));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        // Manually set the start position of the object here.
+        // Ensure this is after the call to handle_value to ensure correct start position.
+        if (m_lexer_ref)
+        {
+            // Lexer has read the first character of the object, so
+            // subtract 1 from the position to get the correct start position.
+            ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
+        }
+#endif
+
+        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_object());
+
+        // add null at given key and store the reference for later
+        object_element = &(ref_stack.back()->m_data.m_value.object->operator[](val));
+        return true;
+    }
+
+    bool end_object()
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_object());
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        if (m_lexer_ref)
+        {
+            // Lexer's position is past the closing brace, so set that as the end position.
+            ref_stack.back()->end_position = m_lexer_ref->get_position();
+        }
+#endif
+
+        ref_stack.back()->set_parents();
+        ref_stack.pop_back();
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::array));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        // Manually set the start position of the array here.
+        // Ensure this is after the call to handle_value to ensure correct start position.
+        if (m_lexer_ref)
+        {
+            ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
+        }
+#endif
+
+        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_array());
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        if (m_lexer_ref)
+        {
+            // Lexer's position is past the closing bracket, so set that as the end position.
+            ref_stack.back()->end_position = m_lexer_ref->get_position();
+        }
+#endif
+
+        ref_stack.back()->set_parents();
+        ref_stack.pop_back();
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    void handle_diagnostic_positions_for_json_value(BasicJsonType& v)
+    {
+        if (m_lexer_ref)
+        {
+            // Lexer has read past the current field value, so set the end position to the current position.
+            // The start position will be set below based on the length of the string representation
+            // of the value.
+            v.end_position = m_lexer_ref->get_position();
+
+            switch (v.type())
+            {
+                case value_t::boolean:
+                {
+                    // 4 and 5 are the string length of "true" and "false"
+                    v.start_position = v.end_position - (v.m_data.m_value.boolean ? 4 : 5);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    // 4 is the string length of "null"
+                    v.start_position = v.end_position - 4;
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    // include the length of the quotes, which is 2
+                    v.start_position = v.end_position - v.m_data.m_value.string->size() - 2;
+                    break;
+                }
+
+                // As we handle the start and end positions for values created during parsing,
+                // we do not expect the following value type to be called. Regardless, set the positions
+                // in case this is created manually or through a different constructor. Exclude from lcov
+                // since the exact condition of this switch is esoteric.
+                // LCOV_EXCL_START
+                case value_t::discarded:
+                {
+                    v.end_position = std::string::npos;
+                    v.start_position = v.end_position;
+                    break;
+                }
+                // LCOV_EXCL_STOP
+                case value_t::binary:
+                case value_t::number_integer:
+                case value_t::number_unsigned:
+                case value_t::number_float:
+                {
+                    v.start_position = v.end_position - m_lexer_ref->get_string().size();
+                    break;
+                }
+                case value_t::object:
+                case value_t::array:
+                {
+                    // object and array are handled in start_object() and start_array() handlers
+                    // skip setting the values here.
+                    break;
+                }
+                default: // LCOV_EXCL_LINE
+                    // Handle all possible types discretely, default handler should never be reached.
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert,-warnings-as-errors) LCOV_EXCL_LINE
+            }
+        }
+    }
+#endif
+
+    /*!
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+    */
+    template<typename Value>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    BasicJsonType* handle_value(Value&& v)
+    {
+        if (ref_stack.empty())
+        {
+            root = BasicJsonType(std::forward<Value>(v));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+            handle_diagnostic_positions_for_json_value(root);
+#endif
+
+            return &root;
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->emplace_back(std::forward<Value>(v));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+            handle_diagnostic_positions_for_json_value(ref_stack.back()->m_data.m_value.array->back());
+#endif
+
+            return &(ref_stack.back()->m_data.m_value.array->back());
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_object());
+        JSON_ASSERT(object_element);
+        *object_element = BasicJsonType(std::forward<Value>(v));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        handle_diagnostic_positions_for_json_value(*object_element);
+#endif
+
+        return object_element;
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+    /// the lexer reference to obtain the current position
+    lexer_t* m_lexer_ref = nullptr;
+};
+
+template<typename BasicJsonType, typename InputAdapterType>
+class json_sax_dom_callback_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using parser_callback_t = typename BasicJsonType::parser_callback_t;
+    using parse_event_t = typename BasicJsonType::parse_event_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+
+    json_sax_dom_callback_parser(BasicJsonType& r,
+                                 parser_callback_t cb,
+                                 const bool allow_exceptions_ = true,
+                                 lexer_t* lexer_ = nullptr)
+        : root(r), callback(std::move(cb)), allow_exceptions(allow_exceptions_), m_lexer_ref(lexer_)
+    {
+        keep_stack.push_back(true);
+    }
+
+    // make class move-only
+    json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~json_sax_dom_callback_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        // check callback for object start
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::object_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::object, true);
+        ref_stack.push_back(val.second);
+
+        if (ref_stack.back())
+        {
+
+#if JSON_DIAGNOSTIC_POSITIONS
+            // Manually set the start position of the object here.
+            // Ensure this is after the call to handle_value to ensure correct start position.
+            if (m_lexer_ref)
+            {
+                // Lexer has read the first character of the object, so
+                // subtract 1 from the position to get the correct start position.
+                ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
+            }
+#endif
+
+            // check object limit
+            if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+            {
+                JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
+            }
+        }
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        BasicJsonType k = BasicJsonType(val);
+
+        // check callback for key
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::key, k);
+        key_keep_stack.push_back(keep);
+
+        // add discarded value at given key and store the reference for later
+        if (keep && ref_stack.back())
+        {
+            object_element = &(ref_stack.back()->m_data.m_value.object->operator[](val) = discarded);
+        }
+
+        return true;
+    }
+
+    bool end_object()
+    {
+        if (ref_stack.back())
+        {
+            if (!callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::object_end, *ref_stack.back()))
+            {
+                // discard object
+                *ref_stack.back() = discarded;
+
+#if JSON_DIAGNOSTIC_POSITIONS
+                // Set start/end positions for discarded object.
+                handle_diagnostic_positions_for_json_value(*ref_stack.back());
+#endif
+            }
+            else
+            {
+
+#if JSON_DIAGNOSTIC_POSITIONS
+                if (m_lexer_ref)
+                {
+                    // Lexer's position is past the closing brace, so set that as the end position.
+                    ref_stack.back()->end_position = m_lexer_ref->get_position();
+                }
+#endif
+
+                ref_stack.back()->set_parents();
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_structured())
+        {
+            // remove discarded value
+            for (auto it = ref_stack.back()->begin(); it != ref_stack.back()->end(); ++it)
+            {
+                if (it->is_discarded())
+                {
+                    ref_stack.back()->erase(it);
+                    break;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::array_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::array, true);
+        ref_stack.push_back(val.second);
+
+        if (ref_stack.back())
+        {
+
+#if JSON_DIAGNOSTIC_POSITIONS
+            // Manually set the start position of the array here.
+            // Ensure this is after the call to handle_value to ensure correct start position.
+            if (m_lexer_ref)
+            {
+                // Lexer has read the first character of the array, so
+                // subtract 1 from the position to get the correct start position.
+                ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
+            }
+#endif
+
+            // check array limit
+            if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+            {
+                JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
+            }
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        bool keep = true;
+
+        if (ref_stack.back())
+        {
+            keep = callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::array_end, *ref_stack.back());
+            if (keep)
+            {
+
+#if JSON_DIAGNOSTIC_POSITIONS
+                if (m_lexer_ref)
+                {
+                    // Lexer's position is past the closing bracket, so set that as the end position.
+                    ref_stack.back()->end_position = m_lexer_ref->get_position();
+                }
+#endif
+
+                ref_stack.back()->set_parents();
+            }
+            else
+            {
+                // discard array
+                *ref_stack.back() = discarded;
+
+#if JSON_DIAGNOSTIC_POSITIONS
+                // Set start/end positions for discarded array.
+                handle_diagnostic_positions_for_json_value(*ref_stack.back());
+#endif
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        // remove discarded value
+        if (!keep && !ref_stack.empty() && ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->pop_back();
+        }
+
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    void handle_diagnostic_positions_for_json_value(BasicJsonType& v)
+    {
+        if (m_lexer_ref)
+        {
+            // Lexer has read past the current field value, so set the end position to the current position.
+            // The start position will be set below based on the length of the string representation
+            // of the value.
+            v.end_position = m_lexer_ref->get_position();
+
+            switch (v.type())
+            {
+                case value_t::boolean:
+                {
+                    // 4 and 5 are the string length of "true" and "false"
+                    v.start_position = v.end_position - (v.m_data.m_value.boolean ? 4 : 5);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    // 4 is the string length of "null"
+                    v.start_position = v.end_position - 4;
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    // include the length of the quotes, which is 2
+                    v.start_position = v.end_position - v.m_data.m_value.string->size() - 2;
+                    break;
+                }
+
+                case value_t::discarded:
+                {
+                    v.end_position = std::string::npos;
+                    v.start_position = v.end_position;
+                    break;
+                }
+
+                case value_t::binary:
+                case value_t::number_integer:
+                case value_t::number_unsigned:
+                case value_t::number_float:
+                {
+                    v.start_position = v.end_position - m_lexer_ref->get_string().size();
+                    break;
+                }
+
+                case value_t::object:
+                case value_t::array:
+                {
+                    // object and array are handled in start_object() and start_array() handlers
+                    // skip setting the values here.
+                    break;
+                }
+                default: // LCOV_EXCL_LINE
+                    // Handle all possible types discretely, default handler should never be reached.
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert,-warnings-as-errors) LCOV_EXCL_LINE
+            }
+        }
+    }
+#endif
+
+    /*!
+    @param[in] v  value to add to the JSON value we build during parsing
+    @param[in] skip_callback  whether we should skip calling the callback
+               function; this is required after start_array() and
+               start_object() SAX events, because otherwise we would call the
+               callback function with an empty array or object, respectively.
+
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+
+    @return pair of boolean (whether value should be kept) and pointer (to the
+            passed value in the ref_stack hierarchy; nullptr if not kept)
+    */
+    template<typename Value>
+    std::pair<bool, BasicJsonType*> handle_value(Value&& v, const bool skip_callback = false)
+    {
+        JSON_ASSERT(!keep_stack.empty());
+
+        // do not handle this value if we know it would be added to a discarded
+        // container
+        if (!keep_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // create value
+        auto value = BasicJsonType(std::forward<Value>(v));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        handle_diagnostic_positions_for_json_value(value);
+#endif
+
+        // check callback
+        const bool keep = skip_callback || callback(static_cast<int>(ref_stack.size()), parse_event_t::value, value);
+
+        // do not handle this value if we just learnt it shall be discarded
+        if (!keep)
+        {
+            return {false, nullptr};
+        }
+
+        if (ref_stack.empty())
+        {
+            root = std::move(value);
+            return {true, & root};
+        }
+
+        // skip this value if we already decided to skip the parent
+        // (https://github.com/nlohmann/json/issues/971#issuecomment-413678360)
+        if (!ref_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // we now only expect arrays and objects
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        // array
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->emplace_back(std::move(value));
+            return {true, & (ref_stack.back()->m_data.m_value.array->back())};
+        }
+
+        // object
+        JSON_ASSERT(ref_stack.back()->is_object());
+        // check if we should store an element for the current key
+        JSON_ASSERT(!key_keep_stack.empty());
+        const bool store_element = key_keep_stack.back();
+        key_keep_stack.pop_back();
+
+        if (!store_element)
+        {
+            return {false, nullptr};
+        }
+
+        JSON_ASSERT(object_element);
+        *object_element = std::move(value);
+        return {true, object_element};
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// stack to manage which values to keep
+    std::vector<bool> keep_stack {}; // NOLINT(readability-redundant-member-init)
+    /// stack to manage which object keys to keep
+    std::vector<bool> key_keep_stack {}; // NOLINT(readability-redundant-member-init)
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// callback function
+    const parser_callback_t callback = nullptr;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+    /// a discarded value for the callback
+    BasicJsonType discarded = BasicJsonType::value_t::discarded;
+    /// the lexer reference to obtain the current position
+    lexer_t* m_lexer_ref = nullptr;
+};
+
+template<typename BasicJsonType>
+class json_sax_acceptor
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    bool null()
+    {
+        return true;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_integer(number_integer_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_float(number_float_t /*unused*/, const string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool string(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool binary(binary_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool start_object(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
+    {
+        return true;
+    }
+
+    bool key(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool end_object()
+    {
+        return true;
+    }
+
+    bool start_array(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
+    {
+        return true;
+    }
+
+    bool end_array()
+    {
+        return true;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const detail::exception& /*unused*/)
+    {
+        return false;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/lexer.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/lexer.hpp
new file mode 100644
index 00000000..6696b5a8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/lexer.hpp
@@ -0,0 +1,1643 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <array> // array
+#include <clocale> // localeconv
+#include <cstddef> // size_t
+#include <cstdio> // snprintf
+#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
+#include <initializer_list> // initializer_list
+#include <string> // char_traits, string
+#include <utility> // move
+#include <vector> // vector
+
+#include <nlohmann/detail/input/input_adapters.hpp>
+#include <nlohmann/detail/input/position_t.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////
+// lexer //
+///////////
+
+template<typename BasicJsonType>
+class lexer_base
+{
+  public:
+    /// token types for the parser
+    enum class token_type
+    {
+        uninitialized,    ///< indicating the scanner is uninitialized
+        literal_true,     ///< the `true` literal
+        literal_false,    ///< the `false` literal
+        literal_null,     ///< the `null` literal
+        value_string,     ///< a string -- use get_string() for actual value
+        value_unsigned,   ///< an unsigned integer -- use get_number_unsigned() for actual value
+        value_integer,    ///< a signed integer -- use get_number_integer() for actual value
+        value_float,      ///< an floating point number -- use get_number_float() for actual value
+        begin_array,      ///< the character for array begin `[`
+        begin_object,     ///< the character for object begin `{`
+        end_array,        ///< the character for array end `]`
+        end_object,       ///< the character for object end `}`
+        name_separator,   ///< the name separator `:`
+        value_separator,  ///< the value separator `,`
+        parse_error,      ///< indicating a parse error
+        end_of_input,     ///< indicating the end of the input buffer
+        literal_or_value  ///< a literal or the begin of a value (only for diagnostics)
+    };
+
+    /// return name of values of type token_type (only used for errors)
+    JSON_HEDLEY_RETURNS_NON_NULL
+    JSON_HEDLEY_CONST
+    static const char* token_type_name(const token_type t) noexcept
+    {
+        switch (t)
+        {
+            case token_type::uninitialized:
+                return "<uninitialized>";
+            case token_type::literal_true:
+                return "true literal";
+            case token_type::literal_false:
+                return "false literal";
+            case token_type::literal_null:
+                return "null literal";
+            case token_type::value_string:
+                return "string literal";
+            case token_type::value_unsigned:
+            case token_type::value_integer:
+            case token_type::value_float:
+                return "number literal";
+            case token_type::begin_array:
+                return "'['";
+            case token_type::begin_object:
+                return "'{'";
+            case token_type::end_array:
+                return "']'";
+            case token_type::end_object:
+                return "'}'";
+            case token_type::name_separator:
+                return "':'";
+            case token_type::value_separator:
+                return "','";
+            case token_type::parse_error:
+                return "<parse error>";
+            case token_type::end_of_input:
+                return "end of input";
+            case token_type::literal_or_value:
+                return "'[', '{', or a literal";
+            // LCOV_EXCL_START
+            default: // catch non-enum values
+                return "unknown token";
+                // LCOV_EXCL_STOP
+        }
+    }
+};
+/*!
+@brief lexical analysis
+
+This class organizes the lexical analysis during JSON deserialization.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class lexer : public lexer_base<BasicJsonType>
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename char_traits<char_type>::int_type;
+
+  public:
+    using token_type = typename lexer_base<BasicJsonType>::token_type;
+
+    explicit lexer(InputAdapterType&& adapter, bool ignore_comments_ = false) noexcept
+        : ia(std::move(adapter))
+        , ignore_comments(ignore_comments_)
+        , decimal_point_char(static_cast<char_int_type>(get_decimal_point()))
+    {}
+
+    // delete because of pointer members
+    lexer(const lexer&) = delete;
+    lexer(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    lexer& operator=(lexer&) = delete;
+    lexer& operator=(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~lexer() = default;
+
+  private:
+    /////////////////////
+    // locales
+    /////////////////////
+
+    /// return the locale-dependent decimal point
+    JSON_HEDLEY_PURE
+    static char get_decimal_point() noexcept
+    {
+        const auto* loc = localeconv();
+        JSON_ASSERT(loc != nullptr);
+        return (loc->decimal_point == nullptr) ? '.' : *(loc->decimal_point);
+    }
+
+    /////////////////////
+    // scan functions
+    /////////////////////
+
+    /*!
+    @brief get codepoint from 4 hex characters following `\u`
+
+    For input "\u c1 c2 c3 c4" the codepoint is:
+      (c1 * 0x1000) + (c2 * 0x0100) + (c3 * 0x0010) + c4
+    = (c1 << 12) + (c2 << 8) + (c3 << 4) + (c4 << 0)
+
+    Furthermore, the possible characters '0'..'9', 'A'..'F', and 'a'..'f'
+    must be converted to the integers 0x0..0x9, 0xA..0xF, 0xA..0xF, resp. The
+    conversion is done by subtracting the offset (0x30, 0x37, and 0x57)
+    between the ASCII value of the character and the desired integer value.
+
+    @return codepoint (0x0000..0xFFFF) or -1 in case of an error (e.g. EOF or
+            non-hex character)
+    */
+    int get_codepoint()
+    {
+        // this function only makes sense after reading `\u`
+        JSON_ASSERT(current == 'u');
+        int codepoint = 0;
+
+        const auto factors = { 12u, 8u, 4u, 0u };
+        for (const auto factor : factors)
+        {
+            get();
+
+            if (current >= '0' && current <= '9')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x30u) << factor);
+            }
+            else if (current >= 'A' && current <= 'F')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x37u) << factor);
+            }
+            else if (current >= 'a' && current <= 'f')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x57u) << factor);
+            }
+            else
+            {
+                return -1;
+            }
+        }
+
+        JSON_ASSERT(0x0000 <= codepoint && codepoint <= 0xFFFF);
+        return codepoint;
+    }
+
+    /*!
+    @brief check if the next byte(s) are inside a given range
+
+    Adds the current byte and, for each passed range, reads a new byte and
+    checks if it is inside the range. If a violation was detected, set up an
+    error message and return false. Otherwise, return true.
+
+    @param[in] ranges  list of integers; interpreted as list of pairs of
+                       inclusive lower and upper bound, respectively
+
+    @pre The passed list @a ranges must have 2, 4, or 6 elements; that is,
+         1, 2, or 3 pairs. This precondition is enforced by an assertion.
+
+    @return true if and only if no range violation was detected
+    */
+    bool next_byte_in_range(std::initializer_list<char_int_type> ranges)
+    {
+        JSON_ASSERT(ranges.size() == 2 || ranges.size() == 4 || ranges.size() == 6);
+        add(current);
+
+        for (auto range = ranges.begin(); range != ranges.end(); ++range)
+        {
+            get();
+            if (JSON_HEDLEY_LIKELY(*range <= current && current <= *(++range))) // NOLINT(bugprone-inc-dec-in-conditions)
+            {
+                add(current);
+            }
+            else
+            {
+                error_message = "invalid string: ill-formed UTF-8 byte";
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief scan a string literal
+
+    This function scans a string according to Sect. 7 of RFC 8259. While
+    scanning, bytes are escaped and copied into buffer token_buffer. Then the
+    function returns successfully, token_buffer is *not* null-terminated (as it
+    may contain \0 bytes), and token_buffer.size() is the number of bytes in the
+    string.
+
+    @return token_type::value_string if string could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note In case of errors, variable error_message contains a textual
+          description.
+    */
+    token_type scan_string()
+    {
+        // reset token_buffer (ignore opening quote)
+        reset();
+
+        // we entered the function by reading an open quote
+        JSON_ASSERT(current == '\"');
+
+        while (true)
+        {
+            // get next character
+            switch (get())
+            {
+                // end of file while parsing string
+                case char_traits<char_type>::eof():
+                {
+                    error_message = "invalid string: missing closing quote";
+                    return token_type::parse_error;
+                }
+
+                // closing quote
+                case '\"':
+                {
+                    return token_type::value_string;
+                }
+
+                // escapes
+                case '\\':
+                {
+                    switch (get())
+                    {
+                        // quotation mark
+                        case '\"':
+                            add('\"');
+                            break;
+                        // reverse solidus
+                        case '\\':
+                            add('\\');
+                            break;
+                        // solidus
+                        case '/':
+                            add('/');
+                            break;
+                        // backspace
+                        case 'b':
+                            add('\b');
+                            break;
+                        // form feed
+                        case 'f':
+                            add('\f');
+                            break;
+                        // line feed
+                        case 'n':
+                            add('\n');
+                            break;
+                        // carriage return
+                        case 'r':
+                            add('\r');
+                            break;
+                        // tab
+                        case 't':
+                            add('\t');
+                            break;
+
+                        // unicode escapes
+                        case 'u':
+                        {
+                            const int codepoint1 = get_codepoint();
+                            int codepoint = codepoint1; // start with codepoint1
+
+                            if (JSON_HEDLEY_UNLIKELY(codepoint1 == -1))
+                            {
+                                error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                return token_type::parse_error;
+                            }
+
+                            // check if code point is a high surrogate
+                            if (0xD800 <= codepoint1 && codepoint1 <= 0xDBFF)
+                            {
+                                // expect next \uxxxx entry
+                                if (JSON_HEDLEY_LIKELY(get() == '\\' && get() == 'u'))
+                                {
+                                    const int codepoint2 = get_codepoint();
+
+                                    if (JSON_HEDLEY_UNLIKELY(codepoint2 == -1))
+                                    {
+                                        error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                        return token_type::parse_error;
+                                    }
+
+                                    // check if codepoint2 is a low surrogate
+                                    if (JSON_HEDLEY_LIKELY(0xDC00 <= codepoint2 && codepoint2 <= 0xDFFF))
+                                    {
+                                        // overwrite codepoint
+                                        codepoint = static_cast<int>(
+                                                        // high surrogate occupies the most significant 22 bits
+                                                        (static_cast<unsigned int>(codepoint1) << 10u)
+                                                        // low surrogate occupies the least significant 15 bits
+                                                        + static_cast<unsigned int>(codepoint2)
+                                                        // there is still the 0xD800, 0xDC00 and 0x10000 noise
+                                                        // in the result, so we have to subtract with:
+                                                        // (0xD800 << 10) + DC00 - 0x10000 = 0x35FDC00
+                                                        - 0x35FDC00u);
+                                    }
+                                    else
+                                    {
+                                        error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                        return token_type::parse_error;
+                                    }
+                                }
+                                else
+                                {
+                                    error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+                            else
+                            {
+                                if (JSON_HEDLEY_UNLIKELY(0xDC00 <= codepoint1 && codepoint1 <= 0xDFFF))
+                                {
+                                    error_message = "invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+
+                            // result of the above calculation yields a proper codepoint
+                            JSON_ASSERT(0x00 <= codepoint && codepoint <= 0x10FFFF);
+
+                            // translate codepoint into bytes
+                            if (codepoint < 0x80)
+                            {
+                                // 1-byte characters: 0xxxxxxx (ASCII)
+                                add(static_cast<char_int_type>(codepoint));
+                            }
+                            else if (codepoint <= 0x7FF)
+                            {
+                                // 2-byte characters: 110xxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xC0u | (static_cast<unsigned int>(codepoint) >> 6u)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else if (codepoint <= 0xFFFF)
+                            {
+                                // 3-byte characters: 1110xxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xE0u | (static_cast<unsigned int>(codepoint) >> 12u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else
+                            {
+                                // 4-byte characters: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xF0u | (static_cast<unsigned int>(codepoint) >> 18u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 12u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+
+                            break;
+                        }
+
+                        // other characters after escape
+                        default:
+                            error_message = "invalid string: forbidden character after backslash";
+                            return token_type::parse_error;
+                    }
+
+                    break;
+                }
+
+                // invalid control characters
+                case 0x00:
+                {
+                    error_message = "invalid string: control character U+0000 (NUL) must be escaped to \\u0000";
+                    return token_type::parse_error;
+                }
+
+                case 0x01:
+                {
+                    error_message = "invalid string: control character U+0001 (SOH) must be escaped to \\u0001";
+                    return token_type::parse_error;
+                }
+
+                case 0x02:
+                {
+                    error_message = "invalid string: control character U+0002 (STX) must be escaped to \\u0002";
+                    return token_type::parse_error;
+                }
+
+                case 0x03:
+                {
+                    error_message = "invalid string: control character U+0003 (ETX) must be escaped to \\u0003";
+                    return token_type::parse_error;
+                }
+
+                case 0x04:
+                {
+                    error_message = "invalid string: control character U+0004 (EOT) must be escaped to \\u0004";
+                    return token_type::parse_error;
+                }
+
+                case 0x05:
+                {
+                    error_message = "invalid string: control character U+0005 (ENQ) must be escaped to \\u0005";
+                    return token_type::parse_error;
+                }
+
+                case 0x06:
+                {
+                    error_message = "invalid string: control character U+0006 (ACK) must be escaped to \\u0006";
+                    return token_type::parse_error;
+                }
+
+                case 0x07:
+                {
+                    error_message = "invalid string: control character U+0007 (BEL) must be escaped to \\u0007";
+                    return token_type::parse_error;
+                }
+
+                case 0x08:
+                {
+                    error_message = "invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b";
+                    return token_type::parse_error;
+                }
+
+                case 0x09:
+                {
+                    error_message = "invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t";
+                    return token_type::parse_error;
+                }
+
+                case 0x0A:
+                {
+                    error_message = "invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n";
+                    return token_type::parse_error;
+                }
+
+                case 0x0B:
+                {
+                    error_message = "invalid string: control character U+000B (VT) must be escaped to \\u000B";
+                    return token_type::parse_error;
+                }
+
+                case 0x0C:
+                {
+                    error_message = "invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f";
+                    return token_type::parse_error;
+                }
+
+                case 0x0D:
+                {
+                    error_message = "invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r";
+                    return token_type::parse_error;
+                }
+
+                case 0x0E:
+                {
+                    error_message = "invalid string: control character U+000E (SO) must be escaped to \\u000E";
+                    return token_type::parse_error;
+                }
+
+                case 0x0F:
+                {
+                    error_message = "invalid string: control character U+000F (SI) must be escaped to \\u000F";
+                    return token_type::parse_error;
+                }
+
+                case 0x10:
+                {
+                    error_message = "invalid string: control character U+0010 (DLE) must be escaped to \\u0010";
+                    return token_type::parse_error;
+                }
+
+                case 0x11:
+                {
+                    error_message = "invalid string: control character U+0011 (DC1) must be escaped to \\u0011";
+                    return token_type::parse_error;
+                }
+
+                case 0x12:
+                {
+                    error_message = "invalid string: control character U+0012 (DC2) must be escaped to \\u0012";
+                    return token_type::parse_error;
+                }
+
+                case 0x13:
+                {
+                    error_message = "invalid string: control character U+0013 (DC3) must be escaped to \\u0013";
+                    return token_type::parse_error;
+                }
+
+                case 0x14:
+                {
+                    error_message = "invalid string: control character U+0014 (DC4) must be escaped to \\u0014";
+                    return token_type::parse_error;
+                }
+
+                case 0x15:
+                {
+                    error_message = "invalid string: control character U+0015 (NAK) must be escaped to \\u0015";
+                    return token_type::parse_error;
+                }
+
+                case 0x16:
+                {
+                    error_message = "invalid string: control character U+0016 (SYN) must be escaped to \\u0016";
+                    return token_type::parse_error;
+                }
+
+                case 0x17:
+                {
+                    error_message = "invalid string: control character U+0017 (ETB) must be escaped to \\u0017";
+                    return token_type::parse_error;
+                }
+
+                case 0x18:
+                {
+                    error_message = "invalid string: control character U+0018 (CAN) must be escaped to \\u0018";
+                    return token_type::parse_error;
+                }
+
+                case 0x19:
+                {
+                    error_message = "invalid string: control character U+0019 (EM) must be escaped to \\u0019";
+                    return token_type::parse_error;
+                }
+
+                case 0x1A:
+                {
+                    error_message = "invalid string: control character U+001A (SUB) must be escaped to \\u001A";
+                    return token_type::parse_error;
+                }
+
+                case 0x1B:
+                {
+                    error_message = "invalid string: control character U+001B (ESC) must be escaped to \\u001B";
+                    return token_type::parse_error;
+                }
+
+                case 0x1C:
+                {
+                    error_message = "invalid string: control character U+001C (FS) must be escaped to \\u001C";
+                    return token_type::parse_error;
+                }
+
+                case 0x1D:
+                {
+                    error_message = "invalid string: control character U+001D (GS) must be escaped to \\u001D";
+                    return token_type::parse_error;
+                }
+
+                case 0x1E:
+                {
+                    error_message = "invalid string: control character U+001E (RS) must be escaped to \\u001E";
+                    return token_type::parse_error;
+                }
+
+                case 0x1F:
+                {
+                    error_message = "invalid string: control character U+001F (US) must be escaped to \\u001F";
+                    return token_type::parse_error;
+                }
+
+                // U+0020..U+007F (except U+0022 (quote) and U+005C (backspace))
+                case 0x20:
+                case 0x21:
+                case 0x23:
+                case 0x24:
+                case 0x25:
+                case 0x26:
+                case 0x27:
+                case 0x28:
+                case 0x29:
+                case 0x2A:
+                case 0x2B:
+                case 0x2C:
+                case 0x2D:
+                case 0x2E:
+                case 0x2F:
+                case 0x30:
+                case 0x31:
+                case 0x32:
+                case 0x33:
+                case 0x34:
+                case 0x35:
+                case 0x36:
+                case 0x37:
+                case 0x38:
+                case 0x39:
+                case 0x3A:
+                case 0x3B:
+                case 0x3C:
+                case 0x3D:
+                case 0x3E:
+                case 0x3F:
+                case 0x40:
+                case 0x41:
+                case 0x42:
+                case 0x43:
+                case 0x44:
+                case 0x45:
+                case 0x46:
+                case 0x47:
+                case 0x48:
+                case 0x49:
+                case 0x4A:
+                case 0x4B:
+                case 0x4C:
+                case 0x4D:
+                case 0x4E:
+                case 0x4F:
+                case 0x50:
+                case 0x51:
+                case 0x52:
+                case 0x53:
+                case 0x54:
+                case 0x55:
+                case 0x56:
+                case 0x57:
+                case 0x58:
+                case 0x59:
+                case 0x5A:
+                case 0x5B:
+                case 0x5D:
+                case 0x5E:
+                case 0x5F:
+                case 0x60:
+                case 0x61:
+                case 0x62:
+                case 0x63:
+                case 0x64:
+                case 0x65:
+                case 0x66:
+                case 0x67:
+                case 0x68:
+                case 0x69:
+                case 0x6A:
+                case 0x6B:
+                case 0x6C:
+                case 0x6D:
+                case 0x6E:
+                case 0x6F:
+                case 0x70:
+                case 0x71:
+                case 0x72:
+                case 0x73:
+                case 0x74:
+                case 0x75:
+                case 0x76:
+                case 0x77:
+                case 0x78:
+                case 0x79:
+                case 0x7A:
+                case 0x7B:
+                case 0x7C:
+                case 0x7D:
+                case 0x7E:
+                case 0x7F:
+                {
+                    add(current);
+                    break;
+                }
+
+                // U+0080..U+07FF: bytes C2..DF 80..BF
+                case 0xC2:
+                case 0xC3:
+                case 0xC4:
+                case 0xC5:
+                case 0xC6:
+                case 0xC7:
+                case 0xC8:
+                case 0xC9:
+                case 0xCA:
+                case 0xCB:
+                case 0xCC:
+                case 0xCD:
+                case 0xCE:
+                case 0xCF:
+                case 0xD0:
+                case 0xD1:
+                case 0xD2:
+                case 0xD3:
+                case 0xD4:
+                case 0xD5:
+                case 0xD6:
+                case 0xD7:
+                case 0xD8:
+                case 0xD9:
+                case 0xDA:
+                case 0xDB:
+                case 0xDC:
+                case 0xDD:
+                case 0xDE:
+                case 0xDF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({0x80, 0xBF})))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+0800..U+0FFF: bytes E0 A0..BF 80..BF
+                case 0xE0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0xA0, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+1000..U+CFFF: bytes E1..EC 80..BF 80..BF
+                // U+E000..U+FFFF: bytes EE..EF 80..BF 80..BF
+                case 0xE1:
+                case 0xE2:
+                case 0xE3:
+                case 0xE4:
+                case 0xE5:
+                case 0xE6:
+                case 0xE7:
+                case 0xE8:
+                case 0xE9:
+                case 0xEA:
+                case 0xEB:
+                case 0xEC:
+                case 0xEE:
+                case 0xEF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+D000..U+D7FF: bytes ED 80..9F 80..BF
+                case 0xED:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x9F, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
+                case 0xF0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
+                case 0xF1:
+                case 0xF2:
+                case 0xF3:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
+                case 0xF4:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // remaining bytes (80..C1 and F5..FF) are ill-formed
+                default:
+                {
+                    error_message = "invalid string: ill-formed UTF-8 byte";
+                    return token_type::parse_error;
+                }
+            }
+        }
+    }
+
+    /*!
+     * @brief scan a comment
+     * @return whether comment could be scanned successfully
+     */
+    bool scan_comment()
+    {
+        switch (get())
+        {
+            // single-line comments skip input until a newline or EOF is read
+            case '/':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case '\n':
+                        case '\r':
+                        case char_traits<char_type>::eof():
+                        case '\0':
+                            return true;
+
+                        default:
+                            break;
+                    }
+                }
+            }
+
+            // multi-line comments skip input until */ is read
+            case '*':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case char_traits<char_type>::eof():
+                        case '\0':
+                        {
+                            error_message = "invalid comment; missing closing '*/'";
+                            return false;
+                        }
+
+                        case '*':
+                        {
+                            switch (get())
+                            {
+                                case '/':
+                                    return true;
+
+                                default:
+                                {
+                                    unget();
+                                    continue;
+                                }
+                            }
+                        }
+
+                        default:
+                            continue;
+                    }
+                }
+            }
+
+            // unexpected character after reading '/'
+            default:
+            {
+                error_message = "invalid comment; expecting '/' or '*' after '/'";
+                return false;
+            }
+        }
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(float& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtof(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtod(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(long double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtold(str, endptr);
+    }
+
+    /*!
+    @brief scan a number literal
+
+    This function scans a string according to Sect. 6 of RFC 8259.
+
+    The function is realized with a deterministic finite state machine derived
+    from the grammar described in RFC 8259. Starting in state "init", the
+    input is read and used to determined the next state. Only state "done"
+    accepts the number. State "error" is a trap state to model errors. In the
+    table below, "anything" means any character but the ones listed before.
+
+    state    | 0        | 1-9      | e E      | +       | -       | .        | anything
+    ---------|----------|----------|----------|---------|---------|----------|-----------
+    init     | zero     | any1     | [error]  | [error] | minus   | [error]  | [error]
+    minus    | zero     | any1     | [error]  | [error] | [error] | [error]  | [error]
+    zero     | done     | done     | exponent | done    | done    | decimal1 | done
+    any1     | any1     | any1     | exponent | done    | done    | decimal1 | done
+    decimal1 | decimal2 | decimal2 | [error]  | [error] | [error] | [error]  | [error]
+    decimal2 | decimal2 | decimal2 | exponent | done    | done    | done     | done
+    exponent | any2     | any2     | [error]  | sign    | sign    | [error]  | [error]
+    sign     | any2     | any2     | [error]  | [error] | [error] | [error]  | [error]
+    any2     | any2     | any2     | done     | done    | done    | done     | done
+
+    The state machine is realized with one label per state (prefixed with
+    "scan_number_") and `goto` statements between them. The state machine
+    contains cycles, but any cycle can be left when EOF is read. Therefore,
+    the function is guaranteed to terminate.
+
+    During scanning, the read bytes are stored in token_buffer. This string is
+    then converted to a signed integer, an unsigned integer, or a
+    floating-point number.
+
+    @return token_type::value_unsigned, token_type::value_integer, or
+            token_type::value_float if number could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note The scanner is independent of the current locale. Internally, the
+          locale's decimal point is used instead of `.` to work with the
+          locale-dependent converters.
+    */
+    token_type scan_number()  // lgtm [cpp/use-of-goto] `goto` is used in this function to implement the number-parsing state machine described above. By design, any finite input will eventually reach the "done" state or return token_type::parse_error. In each intermediate state, 1 byte of the input is appended to the token_buffer vector, and only the already initialized variables token_buffer, number_type, and error_message are manipulated.
+    {
+        // reset token_buffer to store the number's bytes
+        reset();
+
+        // the type of the parsed number; initially set to unsigned; will be
+        // changed if minus sign, decimal point or exponent is read
+        token_type number_type = token_type::value_unsigned;
+
+        // state (init): we just found out we need to scan a number
+        switch (current)
+        {
+            case '-':
+            {
+                add(current);
+                goto scan_number_minus;
+            }
+
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            // all other characters are rejected outside scan_number()
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+scan_number_minus:
+        // state: we just parsed a leading minus sign
+        number_type = token_type::value_integer;
+        switch (get())
+        {
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '-'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_zero:
+        // state: we just parse a zero (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '.':
+            {
+                add(decimal_point_char);
+                decimal_point_position = token_buffer.size() - 1;
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_any1:
+        // state: we just parsed a number 0-9 (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            case '.':
+            {
+                add(decimal_point_char);
+                decimal_point_position = token_buffer.size() - 1;
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_decimal1:
+        // state: we just parsed a decimal point
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '.'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_decimal2:
+        // we just parsed at least one number after a decimal point
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_exponent:
+        // we just parsed an exponent
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '+':
+            case '-':
+            {
+                add(current);
+                goto scan_number_sign;
+            }
+
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message =
+                    "invalid number; expected '+', '-', or digit after exponent";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_sign:
+        // we just parsed an exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after exponent sign";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_any2:
+        // we just parsed a number after the exponent or exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_done:
+        // unget the character after the number (we only read it to know that
+        // we are done scanning a number)
+        unget();
+
+        char* endptr = nullptr; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        errno = 0;
+
+        // try to parse integers first and fall back to floats
+        if (number_type == token_type::value_unsigned)
+        {
+            const auto x = std::strtoull(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno != ERANGE)
+            {
+                value_unsigned = static_cast<number_unsigned_t>(x);
+                if (value_unsigned == x)
+                {
+                    return token_type::value_unsigned;
+                }
+            }
+        }
+        else if (number_type == token_type::value_integer)
+        {
+            const auto x = std::strtoll(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno != ERANGE)
+            {
+                value_integer = static_cast<number_integer_t>(x);
+                if (value_integer == x)
+                {
+                    return token_type::value_integer;
+                }
+            }
+        }
+
+        // this code is reached if we parse a floating-point number or if an
+        // integer conversion above failed
+        strtof(value_float, token_buffer.data(), &endptr);
+
+        // we checked the number format before
+        JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+        return token_type::value_float;
+    }
+
+    /*!
+    @param[in] literal_text  the literal text to expect
+    @param[in] length        the length of the passed literal text
+    @param[in] return_type   the token type to return on success
+    */
+    JSON_HEDLEY_NON_NULL(2)
+    token_type scan_literal(const char_type* literal_text, const std::size_t length,
+                            token_type return_type)
+    {
+        JSON_ASSERT(char_traits<char_type>::to_char_type(current) == literal_text[0]);
+        for (std::size_t i = 1; i < length; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(char_traits<char_type>::to_char_type(get()) != literal_text[i]))
+            {
+                error_message = "invalid literal";
+                return token_type::parse_error;
+            }
+        }
+        return return_type;
+    }
+
+    /////////////////////
+    // input management
+    /////////////////////
+
+    /// reset token_buffer; current character is beginning of token
+    void reset() noexcept
+    {
+        token_buffer.clear();
+        token_string.clear();
+        decimal_point_position = std::string::npos;
+        token_string.push_back(char_traits<char_type>::to_char_type(current));
+    }
+
+    /*
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a
+    `char_traits<char>::eof()` in that case.  Stores the scanned characters
+    for use in error messages.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++position.chars_read_total;
+        ++position.chars_read_current_line;
+
+        if (next_unget)
+        {
+            // just reset the next_unget variable and work with current
+            next_unget = false;
+        }
+        else
+        {
+            current = ia.get_character();
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != char_traits<char_type>::eof()))
+        {
+            token_string.push_back(char_traits<char_type>::to_char_type(current));
+        }
+
+        if (current == '\n')
+        {
+            ++position.lines_read;
+            position.chars_read_current_line = 0;
+        }
+
+        return current;
+    }
+
+    /*!
+    @brief unget current character (read it again on next get)
+
+    We implement unget by setting variable next_unget to true. The input is not
+    changed - we just simulate ungetting by modifying chars_read_total,
+    chars_read_current_line, and token_string. The next call to get() will
+    behave as if the unget character is read again.
+    */
+    void unget()
+    {
+        next_unget = true;
+
+        --position.chars_read_total;
+
+        // in case we "unget" a newline, we have to also decrement the lines_read
+        if (position.chars_read_current_line == 0)
+        {
+            if (position.lines_read > 0)
+            {
+                --position.lines_read;
+            }
+        }
+        else
+        {
+            --position.chars_read_current_line;
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != char_traits<char_type>::eof()))
+        {
+            JSON_ASSERT(!token_string.empty());
+            token_string.pop_back();
+        }
+    }
+
+    /// add a character to token_buffer
+    void add(char_int_type c)
+    {
+        token_buffer.push_back(static_cast<typename string_t::value_type>(c));
+    }
+
+  public:
+    /////////////////////
+    // value getters
+    /////////////////////
+
+    /// return integer value
+    constexpr number_integer_t get_number_integer() const noexcept
+    {
+        return value_integer;
+    }
+
+    /// return unsigned integer value
+    constexpr number_unsigned_t get_number_unsigned() const noexcept
+    {
+        return value_unsigned;
+    }
+
+    /// return floating-point value
+    constexpr number_float_t get_number_float() const noexcept
+    {
+        return value_float;
+    }
+
+    /// return current string value (implicitly resets the token; useful only once)
+    string_t& get_string()
+    {
+        // translate decimal points from locale back to '.' (#4084)
+        if (decimal_point_char != '.' && decimal_point_position != std::string::npos)
+        {
+            token_buffer[decimal_point_position] = '.';
+        }
+        return token_buffer;
+    }
+
+    /////////////////////
+    // diagnostics
+    /////////////////////
+
+    /// return position of last read token
+    constexpr position_t get_position() const noexcept
+    {
+        return position;
+    }
+
+    /// return the last read token (for errors only).  Will never contain EOF
+    /// (an arbitrary value that is not a valid char value, often -1), because
+    /// 255 may legitimately occur.  May contain NUL, which should be escaped.
+    std::string get_token_string() const
+    {
+        // escape control characters
+        std::string result;
+        for (const auto c : token_string)
+        {
+            if (static_cast<unsigned char>(c) <= '\x1F')
+            {
+                // escape control characters
+                std::array<char, 9> cs{{}};
+                static_cast<void>((std::snprintf)(cs.data(), cs.size(), "<U+%.4X>", static_cast<unsigned char>(c))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                result += cs.data();
+            }
+            else
+            {
+                // add character as is
+                result.push_back(static_cast<std::string::value_type>(c));
+            }
+        }
+
+        return result;
+    }
+
+    /// return syntax error message
+    JSON_HEDLEY_RETURNS_NON_NULL
+    constexpr const char* get_error_message() const noexcept
+    {
+        return error_message;
+    }
+
+    /////////////////////
+    // actual scanner
+    /////////////////////
+
+    /*!
+    @brief skip the UTF-8 byte order mark
+    @return true iff there is no BOM or the correct BOM has been skipped
+    */
+    bool skip_bom()
+    {
+        if (get() == 0xEF)
+        {
+            // check if we completely parse the BOM
+            return get() == 0xBB && get() == 0xBF;
+        }
+
+        // the first character is not the beginning of the BOM; unget it to
+        // process is later
+        unget();
+        return true;
+    }
+
+    void skip_whitespace()
+    {
+        do
+        {
+            get();
+        }
+        while (current == ' ' || current == '\t' || current == '\n' || current == '\r');
+    }
+
+    token_type scan()
+    {
+        // initially, skip the BOM
+        if (position.chars_read_total == 0 && !skip_bom())
+        {
+            error_message = "invalid BOM; must be 0xEF 0xBB 0xBF if given";
+            return token_type::parse_error;
+        }
+
+        // read next character and ignore whitespace
+        skip_whitespace();
+
+        // ignore comments
+        while (ignore_comments && current == '/')
+        {
+            if (!scan_comment())
+            {
+                return token_type::parse_error;
+            }
+
+            // skip following whitespace
+            skip_whitespace();
+        }
+
+        switch (current)
+        {
+            // structural characters
+            case '[':
+                return token_type::begin_array;
+            case ']':
+                return token_type::end_array;
+            case '{':
+                return token_type::begin_object;
+            case '}':
+                return token_type::end_object;
+            case ':':
+                return token_type::name_separator;
+            case ',':
+                return token_type::value_separator;
+
+            // literals
+            case 't':
+            {
+                std::array<char_type, 4> true_literal = {{static_cast<char_type>('t'), static_cast<char_type>('r'), static_cast<char_type>('u'), static_cast<char_type>('e')}};
+                return scan_literal(true_literal.data(), true_literal.size(), token_type::literal_true);
+            }
+            case 'f':
+            {
+                std::array<char_type, 5> false_literal = {{static_cast<char_type>('f'), static_cast<char_type>('a'), static_cast<char_type>('l'), static_cast<char_type>('s'), static_cast<char_type>('e')}};
+                return scan_literal(false_literal.data(), false_literal.size(), token_type::literal_false);
+            }
+            case 'n':
+            {
+                std::array<char_type, 4> null_literal = {{static_cast<char_type>('n'), static_cast<char_type>('u'), static_cast<char_type>('l'), static_cast<char_type>('l')}};
+                return scan_literal(null_literal.data(), null_literal.size(), token_type::literal_null);
+            }
+
+            // string
+            case '\"':
+                return scan_string();
+
+            // number
+            case '-':
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+                return scan_number();
+
+            // end of input (the null byte is needed when parsing from
+            // string literals)
+            case '\0':
+            case char_traits<char_type>::eof():
+                return token_type::end_of_input;
+
+            // error
+            default:
+                error_message = "invalid literal";
+                return token_type::parse_error;
+        }
+    }
+
+  private:
+    /// input adapter
+    InputAdapterType ia;
+
+    /// whether comments should be ignored (true) or signaled as errors (false)
+    const bool ignore_comments = false;
+
+    /// the current character
+    char_int_type current = char_traits<char_type>::eof();
+
+    /// whether the next get() call should just return current
+    bool next_unget = false;
+
+    /// the start position of the current token
+    position_t position {};
+
+    /// raw input token string (for error messages)
+    std::vector<char_type> token_string {};
+
+    /// buffer for variable-length tokens (numbers, strings)
+    string_t token_buffer {};
+
+    /// a description of occurred lexer errors
+    const char* error_message = "";
+
+    // number values
+    number_integer_t value_integer = 0;
+    number_unsigned_t value_unsigned = 0;
+    number_float_t value_float = 0;
+
+    /// the decimal point
+    const char_int_type decimal_point_char = '.';
+    /// the position of the decimal point in the input
+    std::size_t decimal_point_position = std::string::npos;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/parser.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/parser.hpp
new file mode 100644
index 00000000..997a26ff
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/parser.hpp
@@ -0,0 +1,519 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cmath> // isfinite
+#include <cstdint> // uint8_t
+#include <functional> // function
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/input/input_adapters.hpp>
+#include <nlohmann/detail/input/json_sax.hpp>
+#include <nlohmann/detail/input/lexer.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/is_sax.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+////////////
+// parser //
+////////////
+
+enum class parse_event_t : std::uint8_t
+{
+    /// the parser read `{` and started to process a JSON object
+    object_start,
+    /// the parser read `}` and finished processing a JSON object
+    object_end,
+    /// the parser read `[` and started to process a JSON array
+    array_start,
+    /// the parser read `]` and finished processing a JSON array
+    array_end,
+    /// the parser read a key of a value in an object
+    key,
+    /// the parser finished reading a JSON value
+    value
+};
+
+template<typename BasicJsonType>
+using parser_callback_t =
+    std::function<bool(int /*depth*/, parse_event_t /*event*/, BasicJsonType& /*parsed*/)>;
+
+/*!
+@brief syntax analysis
+
+This class implements a recursive descent parser.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class parser
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+    using token_type = typename lexer_t::token_type;
+
+  public:
+    /// a parser reading from an input adapter
+    explicit parser(InputAdapterType&& adapter,
+                    parser_callback_t<BasicJsonType> cb = nullptr,
+                    const bool allow_exceptions_ = true,
+                    const bool skip_comments = false)
+        : callback(std::move(cb))
+        , m_lexer(std::move(adapter), skip_comments)
+        , allow_exceptions(allow_exceptions_)
+    {
+        // read first token
+        get_token();
+    }
+
+    /*!
+    @brief public parser interface
+
+    @param[in] strict      whether to expect the last token to be EOF
+    @param[in,out] result  parsed JSON value
+
+    @throw parse_error.101 in case of an unexpected token
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+    */
+    void parse(const bool strict, BasicJsonType& result)
+    {
+        if (callback)
+        {
+            json_sax_dom_callback_parser<BasicJsonType, InputAdapterType> sdp(result, callback, allow_exceptions, &m_lexer);
+            sax_parse_internal(&sdp);
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(),
+                                                    exception_message(token_type::end_of_input, "value"), nullptr));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+
+            // set top-level value to null if it was discarded by the callback
+            // function
+            if (result.is_discarded())
+            {
+                result = nullptr;
+            }
+        }
+        else
+        {
+            json_sax_dom_parser<BasicJsonType, InputAdapterType> sdp(result, allow_exceptions, &m_lexer);
+            sax_parse_internal(&sdp);
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+        }
+
+        result.assert_invariant();
+    }
+
+    /*!
+    @brief public accept interface
+
+    @param[in] strict  whether to expect the last token to be EOF
+    @return whether the input is a proper JSON text
+    */
+    bool accept(const bool strict = true)
+    {
+        json_sax_acceptor<BasicJsonType> sax_acceptor;
+        return sax_parse(&sax_acceptor, strict);
+    }
+
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse(SAX* sax, const bool strict = true)
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+        const bool result = sax_parse_internal(sax);
+
+        // strict mode: next byte must be EOF
+        if (result && strict && (get_token() != token_type::end_of_input))
+        {
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
+        }
+
+        return result;
+    }
+
+  private:
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse_internal(SAX* sax)
+    {
+        // stack to remember the hierarchy of structured values we are parsing
+        // true = array; false = object
+        std::vector<bool> states;
+        // value to avoid a goto (see comment where set to true)
+        bool skip_to_state_evaluation = false;
+
+        while (true)
+        {
+            if (!skip_to_state_evaluation)
+            {
+                // invariant: get_token() was called before each iteration
+                switch (last_token)
+                {
+                    case token_type::begin_object:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing } -> we are done
+                        if (get_token() == token_type::end_object)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // parse key
+                        if (JSON_HEDLEY_UNLIKELY(last_token != token_type::value_string))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
+                        }
+                        if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        // parse separator (:)
+                        if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
+                        }
+
+                        // remember we are now inside an object
+                        states.push_back(false);
+
+                        // parse values
+                        get_token();
+                        continue;
+                    }
+
+                    case token_type::begin_array:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing ] -> we are done
+                        if (get_token() == token_type::end_array)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // remember we are now inside an array
+                        states.push_back(true);
+
+                        // parse values (no need to call get_token)
+                        continue;
+                    }
+
+                    case token_type::value_float:
+                    {
+                        const auto res = m_lexer.get_number_float();
+
+                        if (JSON_HEDLEY_UNLIKELY(!std::isfinite(res)))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    out_of_range::create(406, concat("number overflow parsing '", m_lexer.get_token_string(), '\''), nullptr));
+                        }
+
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_float(res, m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        break;
+                    }
+
+                    case token_type::literal_false:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(false)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_null:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->null()))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_true:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(true)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_integer:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_integer(m_lexer.get_number_integer())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_string:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->string(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_unsigned:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(m_lexer.get_number_unsigned())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::parse_error:
+                    {
+                        // using "uninitialized" to avoid "expected" message
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::uninitialized, "value"), nullptr));
+                    }
+                    case token_type::end_of_input:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(m_lexer.get_position().chars_read_total == 1))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(),
+                                                            "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+                        }
+
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), nullptr));
+                    }
+                    case token_type::uninitialized:
+                    case token_type::end_array:
+                    case token_type::end_object:
+                    case token_type::name_separator:
+                    case token_type::value_separator:
+                    case token_type::literal_or_value:
+                    default: // the last token was unexpected
+                    {
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), nullptr));
+                    }
+                }
+            }
+            else
+            {
+                skip_to_state_evaluation = false;
+            }
+
+            // we reached this line after we successfully parsed a value
+            if (states.empty())
+            {
+                // empty stack: we reached the end of the hierarchy: done
+                return true;
+            }
+
+            if (states.back())  // array
+            {
+                // comma -> next value
+                if (get_token() == token_type::value_separator)
+                {
+                    // parse a new value
+                    get_token();
+                    continue;
+                }
+
+                // closing ]
+                if (JSON_HEDLEY_LIKELY(last_token == token_type::end_array))
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                    {
+                        return false;
+                    }
+
+                    // We are done with this array. Before we can parse a
+                    // new value, we need to evaluate the new state first.
+                    // By setting skip_to_state_evaluation to false, we
+                    // are effectively jumping to the beginning of this if.
+                    JSON_ASSERT(!states.empty());
+                    states.pop_back();
+                    skip_to_state_evaluation = true;
+                    continue;
+                }
+
+                return sax->parse_error(m_lexer.get_position(),
+                                        m_lexer.get_token_string(),
+                                        parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_array, "array"), nullptr));
+            }
+
+            // states.back() is false -> object
+
+            // comma -> next value
+            if (get_token() == token_type::value_separator)
+            {
+                // parse key
+                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::value_string))
+                {
+                    return sax->parse_error(m_lexer.get_position(),
+                                            m_lexer.get_token_string(),
+                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
+                }
+
+                if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                {
+                    return false;
+                }
+
+                // parse separator (:)
+                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                {
+                    return sax->parse_error(m_lexer.get_position(),
+                                            m_lexer.get_token_string(),
+                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
+                }
+
+                // parse values
+                get_token();
+                continue;
+            }
+
+            // closing }
+            if (JSON_HEDLEY_LIKELY(last_token == token_type::end_object))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                {
+                    return false;
+                }
+
+                // We are done with this object. Before we can parse a
+                // new value, we need to evaluate the new state first.
+                // By setting skip_to_state_evaluation to false, we
+                // are effectively jumping to the beginning of this if.
+                JSON_ASSERT(!states.empty());
+                states.pop_back();
+                skip_to_state_evaluation = true;
+                continue;
+            }
+
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_object, "object"), nullptr));
+        }
+    }
+
+    /// get next token from lexer
+    token_type get_token()
+    {
+        return last_token = m_lexer.scan();
+    }
+
+    std::string exception_message(const token_type expected, const std::string& context)
+    {
+        std::string error_msg = "syntax error ";
+
+        if (!context.empty())
+        {
+            error_msg += concat("while parsing ", context, ' ');
+        }
+
+        error_msg += "- ";
+
+        if (last_token == token_type::parse_error)
+        {
+            error_msg += concat(m_lexer.get_error_message(), "; last read: '",
+                                m_lexer.get_token_string(), '\'');
+        }
+        else
+        {
+            error_msg += concat("unexpected ", lexer_t::token_type_name(last_token));
+        }
+
+        if (expected != token_type::uninitialized)
+        {
+            error_msg += concat("; expected ", lexer_t::token_type_name(expected));
+        }
+
+        return error_msg;
+    }
+
+  private:
+    /// callback function
+    const parser_callback_t<BasicJsonType> callback = nullptr;
+    /// the type of the last read token
+    token_type last_token = token_type::uninitialized;
+    /// the lexer
+    lexer_t m_lexer;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/position_t.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/position_t.hpp
new file mode 100644
index 00000000..42a57df2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/input/position_t.hpp
@@ -0,0 +1,37 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstddef> // size_t
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// struct to capture the start position of the current token
+struct position_t
+{
+    /// the total number of characters read
+    std::size_t chars_read_total = 0;
+    /// the number of characters read in the current line
+    std::size_t chars_read_current_line = 0;
+    /// the number of lines read
+    std::size_t lines_read = 0;
+
+    /// conversion to size_t to preserve SAX interface
+    constexpr operator size_t() const
+    {
+        return chars_read_total;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/internal_iterator.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/internal_iterator.hpp
new file mode 100644
index 00000000..00f67fe9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/internal_iterator.hpp
@@ -0,0 +1,35 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief an iterator value
+
+@note This structure could easily be a union, but MSVC currently does not allow
+unions members with complex constructors, see https://github.com/nlohmann/json/pull/105.
+*/
+template<typename BasicJsonType> struct internal_iterator
+{
+    /// iterator for JSON objects
+    typename BasicJsonType::object_t::iterator object_iterator {};
+    /// iterator for JSON arrays
+    typename BasicJsonType::array_t::iterator array_iterator {};
+    /// generic iterator for all other types
+    primitive_iterator_t primitive_iterator {};
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iter_impl.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iter_impl.hpp
new file mode 100644
index 00000000..b7c72119
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iter_impl.hpp
@@ -0,0 +1,760 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <iterator> // iterator, random_access_iterator_tag, bidirectional_iterator_tag, advance, next
+#include <type_traits> // conditional, is_const, remove_const
+
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/iterators/internal_iterator.hpp>
+#include <nlohmann/detail/iterators/primitive_iterator.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// forward declare, to be able to friend it later on
+template<typename IteratorType> class iteration_proxy;
+template<typename IteratorType> class iteration_proxy_value;
+
+/*!
+@brief a template for a bidirectional iterator for the @ref basic_json class
+This class implements a both iterators (iterator and const_iterator) for the
+@ref basic_json class.
+@note An iterator is called *initialized* when a pointer to a JSON value has
+      been set (e.g., by a constructor or a copy assignment). If the iterator is
+      default-constructed, it is *uninitialized* and most methods are undefined.
+      **The library uses assertions to detect calls on uninitialized iterators.**
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+@since version 1.0.0, simplified in version 2.0.9, change to bidirectional
+       iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)
+*/
+template<typename BasicJsonType>
+class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+{
+    /// the iterator with BasicJsonType of different const-ness
+    using other_iter_impl = iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
+    /// allow basic_json to access private members
+    friend other_iter_impl;
+    friend BasicJsonType;
+    friend iteration_proxy<iter_impl>;
+    friend iteration_proxy_value<iter_impl>;
+
+    using object_t = typename BasicJsonType::object_t;
+    using array_t = typename BasicJsonType::array_t;
+    // make sure BasicJsonType is basic_json or const basic_json
+    static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value,
+                  "iter_impl only accepts (const) basic_json");
+    // superficial check for the LegacyBidirectionalIterator named requirement
+    static_assert(std::is_base_of<std::bidirectional_iterator_tag, std::bidirectional_iterator_tag>::value
+                  &&  std::is_base_of<std::bidirectional_iterator_tag, typename std::iterator_traits<typename array_t::iterator>::iterator_category>::value,
+                  "basic_json iterator assumes array and object type iterators satisfy the LegacyBidirectionalIterator named requirement.");
+
+  public:
+    /// The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17.
+    /// The C++ Standard has never required user-defined iterators to derive from std::iterator.
+    /// A user-defined iterator should provide publicly accessible typedefs named
+    /// iterator_category, value_type, difference_type, pointer, and reference.
+    /// Note that value_type is required to be non-const, even for constant iterators.
+    using iterator_category = std::bidirectional_iterator_tag;
+
+    /// the type of the values when the iterator is dereferenced
+    using value_type = typename BasicJsonType::value_type;
+    /// a type to represent differences between iterators
+    using difference_type = typename BasicJsonType::difference_type;
+    /// defines a pointer to the type iterated over (value_type)
+    using pointer = typename std::conditional<std::is_const<BasicJsonType>::value,
+          typename BasicJsonType::const_pointer,
+          typename BasicJsonType::pointer>::type;
+    /// defines a reference to the type iterated over (value_type)
+    using reference =
+        typename std::conditional<std::is_const<BasicJsonType>::value,
+        typename BasicJsonType::const_reference,
+        typename BasicJsonType::reference>::type;
+
+    iter_impl() = default;
+    ~iter_impl() = default;
+    iter_impl(iter_impl&&) noexcept = default;
+    iter_impl& operator=(iter_impl&&) noexcept = default;
+
+    /*!
+    @brief constructor for a given JSON instance
+    @param[in] object  pointer to a JSON object for this iterator
+    @pre object != nullptr
+    @post The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    explicit iter_impl(pointer object) noexcept : m_object(object)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = typename object_t::iterator();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = typename array_t::iterator();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator = primitive_iterator_t();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @note The conventional copy constructor and copy assignment are implicitly
+          defined. Combined with the following converting constructor and
+          assignment, they support: (1) copy from iterator to iterator, (2)
+          copy from const iterator to const iterator, and (3) conversion from
+          iterator to const iterator. However conversion from const iterator
+          to iterator is not defined.
+    */
+
+    /*!
+    @brief const copy constructor
+    @param[in] other const iterator to copy from
+    @note This copy constructor had to be defined explicitly to circumvent a bug
+          occurring on msvc v19.0 compiler (VS 2015) debug build. For more
+          information refer to: https://github.com/nlohmann/json/issues/1608
+    */
+    iter_impl(const iter_impl<const BasicJsonType>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<const BasicJsonType>& other) noexcept
+    {
+        if (&other != this)
+        {
+            m_object = other.m_object;
+            m_it = other.m_it;
+        }
+        return *this;
+    }
+
+    /*!
+    @brief converting constructor
+    @param[in] other  non-const iterator to copy from
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other  non-const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept // NOLINT(cert-oop54-cpp)
+    {
+        m_object = other.m_object;
+        m_it = other.m_it;
+        return *this;
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief set the iterator to the first value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_begin() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_data.m_value.object->begin();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_data.m_value.array->begin();
+                break;
+            }
+
+            case value_t::null:
+            {
+                // set to end so begin()==end() is true: null is empty
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator.set_begin();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @brief set the iterator past the last value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_end() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_data.m_value.object->end();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_data.m_value.array->end();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+        }
+    }
+
+  public:
+    /*!
+    @brief return a reference to the value pointed to by the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator*() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_data.m_value.object->end());
+                return m_it.object_iterator->second;
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_data.m_value.array->end());
+                return *m_it.array_iterator;
+            }
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief dereference the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    pointer operator->() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_data.m_value.object->end());
+                return &(m_it.object_iterator->second);
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_data.m_value.array->end());
+                return &*m_it.array_iterator;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief post-increment (it++)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        ++(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-increment (++it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator++()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, 1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, 1);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                ++m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief post-decrement (it--)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator--(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        --(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-decrement (--it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator--()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, -1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, -1);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                --m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief comparison: equal
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    bool operator==(const IterImpl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", m_object));
+        }
+
+        // value-initialized forward iterators can be compared, and must compare equal to other value-initialized iterators of the same type #4493
+        if (m_object == nullptr)
+        {
+            return true;
+        }
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                return (m_it.object_iterator == other.m_it.object_iterator);
+
+            case value_t::array:
+                return (m_it.array_iterator == other.m_it.array_iterator);
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return (m_it.primitive_iterator == other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief comparison: not equal
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    bool operator!=(const IterImpl& other) const
+    {
+        return !operator==(other);
+    }
+
+    /*!
+    @brief comparison: smaller
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    bool operator<(const iter_impl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", m_object));
+        }
+
+        // value-initialized forward iterators can be compared, and must compare equal to other value-initialized iterators of the same type #4493
+        if (m_object == nullptr)
+        {
+            // the iterators are both value-initialized and are to be considered equal, but this function checks for smaller, so we return false
+            return false;
+        }
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(213, "cannot compare order of object iterators", m_object));
+
+            case value_t::array:
+                return (m_it.array_iterator < other.m_it.array_iterator);
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return (m_it.primitive_iterator < other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief comparison: less than or equal
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    bool operator<=(const iter_impl& other) const
+    {
+        return !other.operator < (*this);
+    }
+
+    /*!
+    @brief comparison: greater than
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    bool operator>(const iter_impl& other) const
+    {
+        return !operator<=(other);
+    }
+
+    /*!
+    @brief comparison: greater than or equal
+    @pre (1) The iterator is initialized; i.e. `m_object != nullptr`, or (2) both iterators are value-initialized.
+    */
+    bool operator>=(const iter_impl& other) const
+    {
+        return !operator<(other);
+    }
+
+    /*!
+    @brief add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator+=(difference_type i)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", m_object));
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, i);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator += i;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator-=(difference_type i)
+    {
+        return operator+=(-i);
+    }
+
+    /*!
+    @brief add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator+(difference_type i) const
+    {
+        auto result = *this;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief addition of distance and iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    friend iter_impl operator+(difference_type i, const iter_impl& it)
+    {
+        auto result = it;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator-(difference_type i) const
+    {
+        auto result = *this;
+        result -= i;
+        return result;
+    }
+
+    /*!
+    @brief return difference
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    difference_type operator-(const iter_impl& other) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", m_object));
+
+            case value_t::array:
+                return m_it.array_iterator - other.m_it.array_iterator;
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return m_it.primitive_iterator - other.m_it.primitive_iterator;
+        }
+    }
+
+    /*!
+    @brief access to successor
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator[](difference_type n) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(208, "cannot use operator[] for object iterators", m_object));
+
+            case value_t::array:
+                return *std::next(m_it.array_iterator, n);
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.get_value() == -n))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief return the key of an object iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    const typename object_t::key_type& key() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        if (JSON_HEDLEY_LIKELY(m_object->is_object()))
+        {
+            return m_it.object_iterator->first;
+        }
+
+        JSON_THROW(invalid_iterator::create(207, "cannot use key() for non-object iterators", m_object));
+    }
+
+    /*!
+    @brief return the value of an iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference value() const
+    {
+        return operator*();
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /// associated JSON instance
+    pointer m_object = nullptr;
+    /// the actual iterator of the associated instance
+    internal_iterator<typename std::remove_const<BasicJsonType>::type> m_it {};
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iteration_proxy.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iteration_proxy.hpp
new file mode 100644
index 00000000..d3b6b760
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iteration_proxy.hpp
@@ -0,0 +1,235 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstddef> // size_t
+#include <iterator> // forward_iterator_tag
+#include <tuple> // tuple_size, get, tuple_element
+#include <utility> // move
+
+#if JSON_HAS_RANGES
+    #include <ranges> // enable_borrowed_range
+#endif
+
+#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/detail/string_utils.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename IteratorType> class iteration_proxy_value
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    using value_type = iteration_proxy_value;
+    using pointer = value_type *;
+    using reference = value_type &;
+    using iterator_category = std::forward_iterator_tag;
+    using string_type = typename std::remove_cv< typename std::remove_reference<decltype( std::declval<IteratorType>().key() ) >::type >::type;
+
+  private:
+    /// the iterator
+    IteratorType anchor{};
+    /// an index for arrays (used to create key names)
+    std::size_t array_index = 0;
+    /// last stringified array index
+    mutable std::size_t array_index_last = 0;
+    /// a string representation of the array index
+    mutable string_type array_index_str = "0";
+    /// an empty string (to return a reference for primitive values)
+    string_type empty_str{};
+
+  public:
+    explicit iteration_proxy_value() = default;
+    explicit iteration_proxy_value(IteratorType it, std::size_t array_index_ = 0)
+    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
+             && std::is_nothrow_default_constructible<string_type>::value)
+        : anchor(std::move(it))
+        , array_index(array_index_)
+    {}
+
+    iteration_proxy_value(iteration_proxy_value const&) = default;
+    iteration_proxy_value& operator=(iteration_proxy_value const&) = default;
+    // older GCCs are a bit fussy and require explicit noexcept specifiers on defaulted functions
+    iteration_proxy_value(iteration_proxy_value&&)
+    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
+             && std::is_nothrow_move_constructible<string_type>::value) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor,cppcoreguidelines-noexcept-move-operations)
+    iteration_proxy_value& operator=(iteration_proxy_value&&)
+    noexcept(std::is_nothrow_move_assignable<IteratorType>::value
+             && std::is_nothrow_move_assignable<string_type>::value) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor,cppcoreguidelines-noexcept-move-operations)
+    ~iteration_proxy_value() = default;
+
+    /// dereference operator (needed for range-based for)
+    const iteration_proxy_value& operator*() const
+    {
+        return *this;
+    }
+
+    /// increment operator (needed for range-based for)
+    iteration_proxy_value& operator++()
+    {
+        ++anchor;
+        ++array_index;
+
+        return *this;
+    }
+
+    iteration_proxy_value operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto tmp = iteration_proxy_value(anchor, array_index);
+        ++anchor;
+        ++array_index;
+        return tmp;
+    }
+
+    /// equality operator (needed for InputIterator)
+    bool operator==(const iteration_proxy_value& o) const
+    {
+        return anchor == o.anchor;
+    }
+
+    /// inequality operator (needed for range-based for)
+    bool operator!=(const iteration_proxy_value& o) const
+    {
+        return anchor != o.anchor;
+    }
+
+    /// return key of the iterator
+    const string_type& key() const
+    {
+        JSON_ASSERT(anchor.m_object != nullptr);
+
+        switch (anchor.m_object->type())
+        {
+            // use integer array index as key
+            case value_t::array:
+            {
+                if (array_index != array_index_last)
+                {
+                    int_to_string( array_index_str, array_index );
+                    array_index_last = array_index;
+                }
+                return array_index_str;
+            }
+
+            // use key from the object
+            case value_t::object:
+                return anchor.key();
+
+            // use an empty key for all primitive types
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return empty_str;
+        }
+    }
+
+    /// return value of the iterator
+    typename IteratorType::reference value() const
+    {
+        return anchor.value();
+    }
+};
+
+/// proxy class for the items() function
+template<typename IteratorType> class iteration_proxy
+{
+  private:
+    /// the container to iterate
+    typename IteratorType::pointer container = nullptr;
+
+  public:
+    explicit iteration_proxy() = default;
+
+    /// construct iteration proxy from a container
+    explicit iteration_proxy(typename IteratorType::reference cont) noexcept
+        : container(&cont) {}
+
+    iteration_proxy(iteration_proxy const&) = default;
+    iteration_proxy& operator=(iteration_proxy const&) = default;
+    iteration_proxy(iteration_proxy&&) noexcept = default;
+    iteration_proxy& operator=(iteration_proxy&&) noexcept = default;
+    ~iteration_proxy() = default;
+
+    /// return iterator begin (needed for range-based for)
+    iteration_proxy_value<IteratorType> begin() const noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container->begin());
+    }
+
+    /// return iterator end (needed for range-based for)
+    iteration_proxy_value<IteratorType> end() const noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container->end());
+    }
+};
+
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 0, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
+{
+    return i.key();
+}
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 1, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.value())
+{
+    return i.value();
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// The Addition to the STD Namespace is required to add
+// Structured Bindings Support to the iteration_proxy_value class
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+namespace std
+{
+
+#if defined(__clang__)
+    // Fix: https://github.com/nlohmann/json/issues/1401
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wmismatched-tags"
+#endif
+template<typename IteratorType>
+class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>> // NOLINT(cert-dcl58-cpp)
+            : public std::integral_constant<std::size_t, 2> {};
+
+template<std::size_t N, typename IteratorType>
+class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >> // NOLINT(cert-dcl58-cpp)
+{
+  public:
+    using type = decltype(
+                     get<N>(std::declval <
+                            ::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
+};
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+
+}  // namespace std
+
+#if JSON_HAS_RANGES
+    template <typename IteratorType>
+    inline constexpr bool ::std::ranges::enable_borrowed_range<::nlohmann::detail::iteration_proxy<IteratorType>> = true;
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iterator_traits.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iterator_traits.hpp
new file mode 100644
index 00000000..135d804b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/iterator_traits.hpp
@@ -0,0 +1,61 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <iterator> // random_access_iterator_tag
+
+#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/meta/void_t.hpp>
+#include <nlohmann/detail/meta/cpp_future.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename It, typename = void>
+struct iterator_types {};
+
+template<typename It>
+struct iterator_types <
+    It,
+    void_t<typename It::difference_type, typename It::value_type, typename It::pointer,
+    typename It::reference, typename It::iterator_category >>
+{
+    using difference_type = typename It::difference_type;
+    using value_type = typename It::value_type;
+    using pointer = typename It::pointer;
+    using reference = typename It::reference;
+    using iterator_category = typename It::iterator_category;
+};
+
+// This is required as some compilers implement std::iterator_traits in a way that
+// doesn't work with SFINAE. See https://github.com/nlohmann/json/issues/1341.
+template<typename T, typename = void>
+struct iterator_traits
+{
+};
+
+template<typename T>
+struct iterator_traits < T, enable_if_t < !std::is_pointer<T>::value >>
+            : iterator_types<T>
+{
+};
+
+template<typename T>
+struct iterator_traits<T*, enable_if_t<std::is_object<T>::value>>
+{
+    using iterator_category = std::random_access_iterator_tag;
+    using value_type = T;
+    using difference_type = ptrdiff_t;
+    using pointer = T*;
+    using reference = T&;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/json_reverse_iterator.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/json_reverse_iterator.hpp
new file mode 100644
index 00000000..c3ac11da
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/json_reverse_iterator.hpp
@@ -0,0 +1,130 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstddef> // ptrdiff_t
+#include <iterator> // reverse_iterator
+#include <utility> // declval
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+//////////////////////
+// reverse_iterator //
+//////////////////////
+
+/*!
+@brief a template for a reverse iterator class
+
+@tparam Base the base iterator type to reverse. Valid types are @ref
+iterator (to create @ref reverse_iterator) and @ref const_iterator (to
+create @ref const_reverse_iterator).
+
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+- [OutputIterator](https://en.cppreference.com/w/cpp/named_req/OutputIterator):
+  It is possible to write to the pointed-to element (only if @a Base is
+  @ref iterator).
+
+@since version 1.0.0
+*/
+template<typename Base>
+class json_reverse_iterator : public std::reverse_iterator<Base>
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    /// shortcut to the reverse iterator adapter
+    using base_iterator = std::reverse_iterator<Base>;
+    /// the reference type for the pointed-to element
+    using reference = typename Base::reference;
+
+    /// create reverse iterator from iterator
+    explicit json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
+        : base_iterator(it) {}
+
+    /// create reverse iterator from base class
+    explicit json_reverse_iterator(const base_iterator& it) noexcept : base_iterator(it) {}
+
+    /// post-increment (it++)
+    json_reverse_iterator operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator++(1));
+    }
+
+    /// pre-increment (++it)
+    json_reverse_iterator& operator++()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator++());
+    }
+
+    /// post-decrement (it--)
+    json_reverse_iterator operator--(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator--(1));
+    }
+
+    /// pre-decrement (--it)
+    json_reverse_iterator& operator--()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator--());
+    }
+
+    /// add to iterator
+    json_reverse_iterator& operator+=(difference_type i)
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator+=(i));
+    }
+
+    /// add to iterator
+    json_reverse_iterator operator+(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator+(i));
+    }
+
+    /// subtract from iterator
+    json_reverse_iterator operator-(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator-(i));
+    }
+
+    /// return difference
+    difference_type operator-(const json_reverse_iterator& other) const
+    {
+        return base_iterator(*this) - base_iterator(other);
+    }
+
+    /// access to successor
+    reference operator[](difference_type n) const
+    {
+        return *(this->operator+(n));
+    }
+
+    /// return the key of an object iterator
+    auto key() const -> decltype(std::declval<Base>().key())
+    {
+        auto it = --this->base();
+        return it.key();
+    }
+
+    /// return the value of an iterator
+    reference value() const
+    {
+        auto it = --this->base();
+        return it.operator * ();
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/primitive_iterator.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/primitive_iterator.hpp
new file mode 100644
index 00000000..bb4a4cb0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/iterators/primitive_iterator.hpp
@@ -0,0 +1,132 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstddef> // ptrdiff_t
+#include <limits>  // numeric_limits
+
+#include <nlohmann/detail/macro_scope.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*
+@brief an iterator for primitive JSON types
+
+This class models an iterator for primitive JSON types (boolean, number,
+string). It's only purpose is to allow the iterator/const_iterator classes
+to "iterate" over primitive values. Internally, the iterator is modeled by
+a `difference_type` variable. Value begin_value (`0`) models the begin,
+end_value (`1`) models past the end.
+*/
+class primitive_iterator_t
+{
+  private:
+    using difference_type = std::ptrdiff_t;
+    static constexpr difference_type begin_value = 0;
+    static constexpr difference_type end_value = begin_value + 1;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /// iterator as signed integer type
+    difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
+
+  public:
+    constexpr difference_type get_value() const noexcept
+    {
+        return m_it;
+    }
+
+    /// set iterator to a defined beginning
+    void set_begin() noexcept
+    {
+        m_it = begin_value;
+    }
+
+    /// set iterator to a defined past the end
+    void set_end() noexcept
+    {
+        m_it = end_value;
+    }
+
+    /// return whether the iterator can be dereferenced
+    constexpr bool is_begin() const noexcept
+    {
+        return m_it == begin_value;
+    }
+
+    /// return whether the iterator is at end
+    constexpr bool is_end() const noexcept
+    {
+        return m_it == end_value;
+    }
+
+    friend constexpr bool operator==(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it == rhs.m_it;
+    }
+
+    friend constexpr bool operator<(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it < rhs.m_it;
+    }
+
+    primitive_iterator_t operator+(difference_type n) noexcept
+    {
+        auto result = *this;
+        result += n;
+        return result;
+    }
+
+    friend constexpr difference_type operator-(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it - rhs.m_it;
+    }
+
+    primitive_iterator_t& operator++() noexcept
+    {
+        ++m_it;
+        return *this;
+    }
+
+    primitive_iterator_t operator++(int)& noexcept // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        ++m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator--() noexcept
+    {
+        --m_it;
+        return *this;
+    }
+
+    primitive_iterator_t operator--(int)& noexcept // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        --m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator+=(difference_type n) noexcept
+    {
+        m_it += n;
+        return *this;
+    }
+
+    primitive_iterator_t& operator-=(difference_type n) noexcept
+    {
+        m_it -= n;
+        return *this;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_custom_base_class.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_custom_base_class.hpp
new file mode 100644
index 00000000..d526e629
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_custom_base_class.hpp
@@ -0,0 +1,39 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <type_traits> // conditional, is_same
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief Default base class of the @ref basic_json class.
+
+So that the correct implementations of the copy / move ctors / assign operators
+of @ref basic_json do not require complex case distinctions
+(no base class / custom base class used as customization point),
+@ref basic_json always has a base class.
+By default, this class is used because it is empty and thus has no effect
+on the behavior of @ref basic_json.
+*/
+struct json_default_base {};
+
+template<class T>
+using json_base_class = typename std::conditional <
+                        std::is_same<T, void>::value,
+                        json_default_base,
+                        T
+                        >::type;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_pointer.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_pointer.hpp
new file mode 100644
index 00000000..28588127
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_pointer.hpp
@@ -0,0 +1,988 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <algorithm> // all_of
+#include <cctype> // isdigit
+#include <cerrno> // errno, ERANGE
+#include <cstdlib> // strtoull
+#ifndef JSON_NO_IO
+    #include <iosfwd> // ostream
+#endif  // JSON_NO_IO
+#include <limits> // max
+#include <numeric> // accumulate
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+#include <nlohmann/detail/string_escape.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+/// @sa https://json.nlohmann.me/api/json_pointer/
+template<typename RefStringType>
+class json_pointer
+{
+    // allow basic_json to access private members
+    NLOHMANN_BASIC_JSON_TPL_DECLARATION
+    friend class basic_json;
+
+    template<typename>
+    friend class json_pointer;
+
+    template<typename T>
+    struct string_t_helper
+    {
+        using type = T;
+    };
+
+    NLOHMANN_BASIC_JSON_TPL_DECLARATION
+    struct string_t_helper<NLOHMANN_BASIC_JSON_TPL>
+    {
+        using type = StringType;
+    };
+
+  public:
+    // for backwards compatibility accept BasicJsonType
+    using string_t = typename string_t_helper<RefStringType>::type;
+
+    /// @brief create JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/json_pointer/
+    explicit json_pointer(const string_t& s = "")
+        : reference_tokens(split(s))
+    {}
+
+    /// @brief return a string representation of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/to_string/
+    string_t to_string() const
+    {
+        return std::accumulate(reference_tokens.begin(), reference_tokens.end(),
+                               string_t{},
+                               [](const string_t& a, const string_t& b)
+        {
+            return detail::concat(a, '/', detail::escape(b));
+        });
+    }
+
+    /// @brief return a string representation of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_string/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, to_string())
+    operator string_t() const
+    {
+        return to_string();
+    }
+
+#ifndef JSON_NO_IO
+    /// @brief write string representation of the JSON pointer to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const json_pointer& ptr)
+    {
+        o << ptr.to_string();
+        return o;
+    }
+#endif
+
+    /// @brief append another JSON pointer at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(const json_pointer& ptr)
+    {
+        reference_tokens.insert(reference_tokens.end(),
+                                ptr.reference_tokens.begin(),
+                                ptr.reference_tokens.end());
+        return *this;
+    }
+
+    /// @brief append an unescaped reference token at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(string_t token)
+    {
+        push_back(std::move(token));
+        return *this;
+    }
+
+    /// @brief append an array index at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(std::size_t array_idx)
+    {
+        return *this /= std::to_string(array_idx);
+    }
+
+    /// @brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs,
+                                  const json_pointer& rhs)
+    {
+        return json_pointer(lhs) /= rhs;
+    }
+
+    /// @brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs, string_t token) // NOLINT(performance-unnecessary-value-param)
+    {
+        return json_pointer(lhs) /= std::move(token);
+    }
+
+    /// @brief create a new JSON pointer by appending the array-index-token at the end of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs, std::size_t array_idx)
+    {
+        return json_pointer(lhs) /= array_idx;
+    }
+
+    /// @brief returns the parent of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/parent_pointer/
+    json_pointer parent_pointer() const
+    {
+        if (empty())
+        {
+            return *this;
+        }
+
+        json_pointer res = *this;
+        res.pop_back();
+        return res;
+    }
+
+    /// @brief remove last reference token
+    /// @sa https://json.nlohmann.me/api/json_pointer/pop_back/
+    void pop_back()
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        reference_tokens.pop_back();
+    }
+
+    /// @brief return last reference token
+    /// @sa https://json.nlohmann.me/api/json_pointer/back/
+    const string_t& back() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        return reference_tokens.back();
+    }
+
+    /// @brief append an unescaped token at the end of the reference pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
+    void push_back(const string_t& token)
+    {
+        reference_tokens.push_back(token);
+    }
+
+    /// @brief append an unescaped token at the end of the reference pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
+    void push_back(string_t&& token)
+    {
+        reference_tokens.push_back(std::move(token));
+    }
+
+    /// @brief return whether pointer points to the root document
+    /// @sa https://json.nlohmann.me/api/json_pointer/empty/
+    bool empty() const noexcept
+    {
+        return reference_tokens.empty();
+    }
+
+  private:
+    /*!
+    @param[in] s  reference token to be converted into an array index
+
+    @return integer representation of @a s
+
+    @throw parse_error.106  if an array index begins with '0'
+    @throw parse_error.109  if an array index begins not with a digit
+    @throw out_of_range.404 if string @a s could not be converted to an integer
+    @throw out_of_range.410 if an array index exceeds size_type
+    */
+    template<typename BasicJsonType>
+    static typename BasicJsonType::size_type array_index(const string_t& s)
+    {
+        using size_type = typename BasicJsonType::size_type;
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && s[0] == '0'))
+        {
+            JSON_THROW(detail::parse_error::create(106, 0, detail::concat("array index '", s, "' must not begin with '0'"), nullptr));
+        }
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && !(s[0] >= '1' && s[0] <= '9')))
+        {
+            JSON_THROW(detail::parse_error::create(109, 0, detail::concat("array index '", s, "' is not a number"), nullptr));
+        }
+
+        const char* p = s.c_str();
+        char* p_end = nullptr;
+        errno = 0; // strtoull doesn't reset errno
+        const unsigned long long res = std::strtoull(p, &p_end, 10); // NOLINT(runtime/int)
+        if (p == p_end // invalid input or empty string
+                || errno == ERANGE // out of range
+                || JSON_HEDLEY_UNLIKELY(static_cast<std::size_t>(p_end - p) != s.size())) // incomplete read
+        {
+            JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", s, "'"), nullptr));
+        }
+
+        // only triggered on special platforms (like 32bit), see also
+        // https://github.com/nlohmann/json/pull/2203
+        if (res >= static_cast<unsigned long long>((std::numeric_limits<size_type>::max)()))  // NOLINT(runtime/int)
+        {
+            JSON_THROW(detail::out_of_range::create(410, detail::concat("array index ", s, " exceeds size_type"), nullptr));   // LCOV_EXCL_LINE
+        }
+
+        return static_cast<size_type>(res);
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    json_pointer top() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        json_pointer result = *this;
+        result.reference_tokens = {reference_tokens[0]};
+        return result;
+    }
+
+  private:
+    /*!
+    @brief create and return a reference to the pointed to value
+
+    @complexity Linear in the number of reference tokens.
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.313 if value cannot be unflattened
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_and_create(BasicJsonType& j) const
+    {
+        auto* result = &j;
+
+        // in case no reference tokens exist, return a reference to the JSON value
+        // j which will be overwritten by a primitive value
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (result->type())
+            {
+                case detail::value_t::null:
+                {
+                    if (reference_token == "0")
+                    {
+                        // start a new array if reference token is 0
+                        result = &result->operator[](0);
+                    }
+                    else
+                    {
+                        // start a new object otherwise
+                        result = &result->operator[](reference_token);
+                    }
+                    break;
+                }
+
+                case detail::value_t::object:
+                {
+                    // create an entry in the object
+                    result = &result->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    // create an entry in the array
+                    result = &result->operator[](array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                /*
+                The following code is only reached if there exists a reference
+                token _and_ the current value is primitive. In this case, we have
+                an error situation, because primitive values may only occur as
+                single value; that is, with an empty list of reference tokens.
+                */
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::type_error::create(313, "invalid value to unflatten", &j));
+            }
+        }
+
+        return *result;
+    }
+
+    /*!
+    @brief return a reference to the pointed to value
+
+    @note This version does not throw if a value is not present, but tries to
+          create nested values instead. For instance, calling this function
+          with pointer `"/this/that"` on a null value is equivalent to calling
+          `operator[]("this").operator[]("that")` on that value, effectively
+          changing the null value to an object.
+
+    @param[in] ptr  a JSON value
+
+    @return reference to the JSON value pointed to by the JSON pointer
+
+    @complexity Linear in the length of the JSON pointer.
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_unchecked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            // convert null values to arrays or objects before continuing
+            if (ptr->is_null())
+            {
+                // check if reference token is a number
+                const bool nums =
+                    std::all_of(reference_token.begin(), reference_token.end(),
+                                [](const unsigned char x)
+                {
+                    return std::isdigit(x);
+                });
+
+                // change value to array for numbers or "-" or to object otherwise
+                *ptr = (nums || reference_token == "-")
+                       ? detail::value_t::array
+                       : detail::value_t::object;
+            }
+
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (reference_token == "-")
+                    {
+                        // explicitly treat "-" as index beyond the end
+                        ptr = &ptr->operator[](ptr->m_data.m_value.array->size());
+                    }
+                    else
+                    {
+                        // convert array index to number; unchecked access
+                        ptr = &ptr->operator[](array_index<BasicJsonType>(reference_token));
+                    }
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_checked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
+                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
+                                ") is out of range"), ptr));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @brief return a const reference to the pointed to value
+
+    @param[in] ptr  a JSON value
+
+    @return const reference to the JSON value pointed to by the JSON
+    pointer
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    const BasicJsonType& get_unchecked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" cannot be used for const access
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat("array index '-' (", std::to_string(ptr->m_data.m_value.array->size()), ") is out of range"), ptr));
+                    }
+
+                    // use unchecked array access
+                    ptr = &ptr->operator[](array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    const BasicJsonType& get_checked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
+                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
+                                ") is out of range"), ptr));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    */
+    template<typename BasicJsonType>
+    bool contains(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    if (!ptr->contains(reference_token))
+                    {
+                        // we did not find the key in the object
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() == 1 && !("0" <= reference_token && reference_token <= "9")))
+                    {
+                        // invalid char
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() > 1))
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!('1' <= reference_token[0] && reference_token[0] <= '9')))
+                        {
+                            // first char should be between '1' and '9'
+                            return false;
+                        }
+                        for (std::size_t i = 1; i < reference_token.size(); i++)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!('0' <= reference_token[i] && reference_token[i] <= '9')))
+                            {
+                                // other char should be between '0' and '9'
+                                return false;
+                            }
+                        }
+                    }
+
+                    const auto idx = array_index<BasicJsonType>(reference_token);
+                    if (idx >= ptr->size())
+                    {
+                        // index out of range
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](idx);
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                {
+                    // we do not expect primitive values if there is still a
+                    // reference token to process
+                    return false;
+                }
+            }
+        }
+
+        // no reference token left means we found a primitive value
+        return true;
+    }
+
+    /*!
+    @brief split the string input to reference tokens
+
+    @note This function is only called by the json_pointer constructor.
+          All exceptions below are documented there.
+
+    @throw parse_error.107  if the pointer is not empty or begins with '/'
+    @throw parse_error.108  if character '~' is not followed by '0' or '1'
+    */
+    static std::vector<string_t> split(const string_t& reference_string)
+    {
+        std::vector<string_t> result;
+
+        // special case: empty reference string -> no reference tokens
+        if (reference_string.empty())
+        {
+            return result;
+        }
+
+        // check if nonempty reference string begins with slash
+        if (JSON_HEDLEY_UNLIKELY(reference_string[0] != '/'))
+        {
+            JSON_THROW(detail::parse_error::create(107, 1, detail::concat("JSON pointer must be empty or begin with '/' - was: '", reference_string, "'"), nullptr));
+        }
+
+        // extract the reference tokens:
+        // - slash: position of the last read slash (or end of string)
+        // - start: position after the previous slash
+        for (
+            // search for the first slash after the first character
+            std::size_t slash = reference_string.find_first_of('/', 1),
+            // set the beginning of the first reference token
+            start = 1;
+            // we can stop if start == 0 (if slash == string_t::npos)
+            start != 0;
+            // set the beginning of the next reference token
+            // (will eventually be 0 if slash == string_t::npos)
+            start = (slash == string_t::npos) ? 0 : slash + 1,
+            // find next slash
+            slash = reference_string.find_first_of('/', start))
+        {
+            // use the text between the beginning of the reference token
+            // (start) and the last slash (slash).
+            auto reference_token = reference_string.substr(start, slash - start);
+
+            // check reference tokens are properly escaped
+            for (std::size_t pos = reference_token.find_first_of('~');
+                    pos != string_t::npos;
+                    pos = reference_token.find_first_of('~', pos + 1))
+            {
+                JSON_ASSERT(reference_token[pos] == '~');
+
+                // ~ must be followed by 0 or 1
+                if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 ||
+                                         (reference_token[pos + 1] != '0' &&
+                                          reference_token[pos + 1] != '1')))
+                {
+                    JSON_THROW(detail::parse_error::create(108, 0, "escape character '~' must be followed with '0' or '1'", nullptr));
+                }
+            }
+
+            // finally, store the reference token
+            detail::unescape(reference_token);
+            result.push_back(reference_token);
+        }
+
+        return result;
+    }
+
+  private:
+    /*!
+    @param[in] reference_string  the reference string to the current value
+    @param[in] value             the value to consider
+    @param[in,out] result        the result object to insert values to
+
+    @note Empty objects or arrays are flattened to `null`.
+    */
+    template<typename BasicJsonType>
+    static void flatten(const string_t& reference_string,
+                        const BasicJsonType& value,
+                        BasicJsonType& result)
+    {
+        switch (value.type())
+        {
+            case detail::value_t::array:
+            {
+                if (value.m_data.m_value.array->empty())
+                {
+                    // flatten empty array as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate array and use index as reference string
+                    for (std::size_t i = 0; i < value.m_data.m_value.array->size(); ++i)
+                    {
+                        flatten(detail::concat(reference_string, '/', std::to_string(i)),
+                                value.m_data.m_value.array->operator[](i), result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::object:
+            {
+                if (value.m_data.m_value.object->empty())
+                {
+                    // flatten empty object as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate object and use keys as reference string
+                    for (const auto& element : *value.m_data.m_value.object)
+                    {
+                        flatten(detail::concat(reference_string, '/', detail::escape(element.first)), element.second, result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::null:
+            case detail::value_t::string:
+            case detail::value_t::boolean:
+            case detail::value_t::number_integer:
+            case detail::value_t::number_unsigned:
+            case detail::value_t::number_float:
+            case detail::value_t::binary:
+            case detail::value_t::discarded:
+            default:
+            {
+                // add primitive value with its reference string
+                result[reference_string] = value;
+                break;
+            }
+        }
+    }
+
+    /*!
+    @param[in] value  flattened JSON
+
+    @return unflattened JSON
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.314  if value is not an object
+    @throw type_error.315  if object values are not primitive
+    @throw type_error.313  if value cannot be unflattened
+    */
+    template<typename BasicJsonType>
+    static BasicJsonType
+    unflatten(const BasicJsonType& value)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!value.is_object()))
+        {
+            JSON_THROW(detail::type_error::create(314, "only objects can be unflattened", &value));
+        }
+
+        BasicJsonType result;
+
+        // iterate the JSON object values
+        for (const auto& element : *value.m_data.m_value.object)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!element.second.is_primitive()))
+            {
+                JSON_THROW(detail::type_error::create(315, "values in object must be primitive", &element.second));
+            }
+
+            // assign value to reference pointed to by JSON pointer; Note that if
+            // the JSON pointer is "" (i.e., points to the whole value), function
+            // get_and_create returns a reference to result itself. An assignment
+            // will then create a primitive value.
+            json_pointer(element.first).get_and_create(result) = element.second;
+        }
+
+        return result;
+    }
+
+    // can't use conversion operator because of ambiguity
+    json_pointer<string_t> convert() const&
+    {
+        json_pointer<string_t> result;
+        result.reference_tokens = reference_tokens;
+        return result;
+    }
+
+    json_pointer<string_t> convert()&&
+    {
+        json_pointer<string_t> result;
+        result.reference_tokens = std::move(reference_tokens);
+        return result;
+    }
+
+  public:
+#if JSON_HAS_THREE_WAY_COMPARISON
+    /// @brief compares two JSON pointers for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeRhs>
+    bool operator==(const json_pointer<RefStringTypeRhs>& rhs) const noexcept
+    {
+        return reference_tokens == rhs.reference_tokens;
+    }
+
+    /// @brief compares JSON pointer and string for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer))
+    bool operator==(const string_t& rhs) const
+    {
+        return *this == json_pointer(rhs);
+    }
+
+    /// @brief 3-way compares two JSON pointers
+    template<typename RefStringTypeRhs>
+    std::strong_ordering operator<=>(const json_pointer<RefStringTypeRhs>& rhs) const noexcept // *NOPAD*
+    {
+        return  reference_tokens <=> rhs.reference_tokens; // *NOPAD*
+    }
+#else
+    /// @brief compares two JSON pointers for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+
+    /// @brief compares JSON pointer and string for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeLhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                           const StringType& rhs);
+
+    /// @brief compares string and JSON pointer for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeRhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const StringType& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs);
+
+    /// @brief compares two JSON pointers for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+
+    /// @brief compares JSON pointer and string for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeLhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                           const StringType& rhs);
+
+    /// @brief compares string and JSON pointer for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeRhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const StringType& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs);
+
+    /// @brief compares two JSON pointer for less-than
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
+                          const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+#endif
+
+  private:
+    /// the reference tokens
+    std::vector<string_t> reference_tokens;
+};
+
+#if !JSON_HAS_THREE_WAY_COMPARISON
+// functions cannot be defined inside class due to ODR violations
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return lhs.reference_tokens == rhs.reference_tokens;
+}
+
+template<typename RefStringTypeLhs,
+         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
+inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                       const StringType& rhs)
+{
+    return lhs == json_pointer<RefStringTypeLhs>(rhs);
+}
+
+template<typename RefStringTypeRhs,
+         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
+inline bool operator==(const StringType& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs)
+{
+    return json_pointer<RefStringTypeRhs>(lhs) == rhs;
+}
+
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeLhs,
+         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
+inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                       const StringType& rhs)
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeRhs,
+         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
+inline bool operator!=(const StringType& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs)
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
+                      const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return lhs.reference_tokens < rhs.reference_tokens;
+}
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_ref.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_ref.hpp
new file mode 100644
index 00000000..2cd58e71
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/json_ref.hpp
@@ -0,0 +1,78 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <initializer_list>
+#include <utility>
+
+#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename BasicJsonType>
+class json_ref
+{
+  public:
+    using value_type = BasicJsonType;
+
+    json_ref(value_type&& value)
+        : owned_value(std::move(value))
+    {}
+
+    json_ref(const value_type& value)
+        : value_ref(&value)
+    {}
+
+    json_ref(std::initializer_list<json_ref> init)
+        : owned_value(init)
+    {}
+
+    template <
+        class... Args,
+        enable_if_t<std::is_constructible<value_type, Args...>::value, int> = 0 >
+    json_ref(Args && ... args)
+        : owned_value(std::forward<Args>(args)...)
+    {}
+
+    // class should be movable only
+    json_ref(json_ref&&) noexcept = default;
+    json_ref(const json_ref&) = delete;
+    json_ref& operator=(const json_ref&) = delete;
+    json_ref& operator=(json_ref&&) = delete;
+    ~json_ref() = default;
+
+    value_type moved_or_copied() const
+    {
+        if (value_ref == nullptr)
+        {
+            return std::move(owned_value);
+        }
+        return *value_ref;
+    }
+
+    value_type const& operator*() const
+    {
+        return value_ref ? *value_ref : owned_value;
+    }
+
+    value_type const* operator->() const
+    {
+        return &** this;
+    }
+
+  private:
+    mutable value_type owned_value = nullptr;
+    value_type const* value_ref = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/macro_scope.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/macro_scope.hpp
new file mode 100644
index 00000000..1ec5e40d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/macro_scope.hpp
@@ -0,0 +1,518 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <utility> // declval, pair
+#include <nlohmann/detail/meta/detected.hpp>
+#include <nlohmann/thirdparty/hedley/hedley.hpp>
+
+// This file contains all internal macro definitions (except those affecting ABI)
+// You MUST include macro_unscope.hpp at the end of json.hpp to undef all of them
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+// exclude unsupported compilers
+#if !defined(JSON_SKIP_UNSUPPORTED_COMPILER_CHECK)
+    #if defined(__clang__)
+        #if (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__) < 30400
+            #error "unsupported Clang version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #elif defined(__GNUC__) && !(defined(__ICC) || defined(__INTEL_COMPILER))
+        #if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40800
+            #error "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #endif
+#endif
+
+// C++ language standard detection
+// if the user manually specified the used c++ version this is skipped
+#if !defined(JSON_HAS_CPP_20) && !defined(JSON_HAS_CPP_17) && !defined(JSON_HAS_CPP_14) && !defined(JSON_HAS_CPP_11)
+    #if (defined(__cplusplus) && __cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
+        #define JSON_HAS_CPP_20
+        #define JSON_HAS_CPP_17
+        #define JSON_HAS_CPP_14
+    #elif (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_HAS_CXX17) && _HAS_CXX17 == 1) // fix for issue #464
+        #define JSON_HAS_CPP_17
+        #define JSON_HAS_CPP_14
+    #elif (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
+        #define JSON_HAS_CPP_14
+    #endif
+    // the cpp 11 flag is always specified because it is the minimal required version
+    #define JSON_HAS_CPP_11
+#endif
+
+#ifdef __has_include
+    #if __has_include(<version>)
+        #include <version>
+    #endif
+#endif
+
+#if !defined(JSON_HAS_FILESYSTEM) && !defined(JSON_HAS_EXPERIMENTAL_FILESYSTEM)
+    #ifdef JSON_HAS_CPP_17
+        #if defined(__cpp_lib_filesystem)
+            #define JSON_HAS_FILESYSTEM 1
+        #elif defined(__cpp_lib_experimental_filesystem)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #elif !defined(__has_include)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #elif __has_include(<filesystem>)
+            #define JSON_HAS_FILESYSTEM 1
+        #elif __has_include(<experimental/filesystem>)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #endif
+
+        // std::filesystem does not work on MinGW GCC 8: https://sourceforge.net/p/mingw-w64/bugs/737/
+        #if defined(__MINGW32__) && defined(__GNUC__) && __GNUC__ == 8
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before GCC 8: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 8
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before Clang 7: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(__clang_major__) && __clang_major__ < 7
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before MSVC 19.14: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(_MSC_VER) && _MSC_VER < 1914
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before iOS 13
+        #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 130000
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before macOS Catalina
+        #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101500
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+    #endif
+#endif
+
+#ifndef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+    #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 0
+#endif
+
+#ifndef JSON_HAS_FILESYSTEM
+    #define JSON_HAS_FILESYSTEM 0
+#endif
+
+#ifndef JSON_HAS_THREE_WAY_COMPARISON
+    #if defined(__cpp_impl_three_way_comparison) && __cpp_impl_three_way_comparison >= 201907L \
+        && defined(__cpp_lib_three_way_comparison) && __cpp_lib_three_way_comparison >= 201907L
+        #define JSON_HAS_THREE_WAY_COMPARISON 1
+    #else
+        #define JSON_HAS_THREE_WAY_COMPARISON 0
+    #endif
+#endif
+
+#ifndef JSON_HAS_RANGES
+    // ranges header shipping in GCC 11.1.0 (released 2021-04-27) has syntax error
+    #if defined(__GLIBCXX__) && __GLIBCXX__ == 20210427
+        #define JSON_HAS_RANGES 0
+    #elif defined(__cpp_lib_ranges)
+        #define JSON_HAS_RANGES 1
+    #else
+        #define JSON_HAS_RANGES 0
+    #endif
+#endif
+
+#ifndef JSON_HAS_STATIC_RTTI
+    #if !defined(_HAS_STATIC_RTTI) || _HAS_STATIC_RTTI != 0
+        #define JSON_HAS_STATIC_RTTI 1
+    #else
+        #define JSON_HAS_STATIC_RTTI 0
+    #endif
+#endif
+
+#ifdef JSON_HAS_CPP_17
+    #define JSON_INLINE_VARIABLE inline
+#else
+    #define JSON_INLINE_VARIABLE
+#endif
+
+#if JSON_HEDLEY_HAS_ATTRIBUTE(no_unique_address)
+    #define JSON_NO_UNIQUE_ADDRESS [[no_unique_address]]
+#else
+    #define JSON_NO_UNIQUE_ADDRESS
+#endif
+
+// disable documentation warnings on clang
+#if defined(__clang__)
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wdocumentation"
+    #pragma clang diagnostic ignored "-Wdocumentation-unknown-command"
+#endif
+
+// allow disabling exceptions
+#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
+    #define JSON_THROW(exception) throw exception
+    #define JSON_TRY try
+    #define JSON_CATCH(exception) catch(exception)
+    #define JSON_INTERNAL_CATCH(exception) catch(exception)
+#else
+    #include <cstdlib>
+    #define JSON_THROW(exception) std::abort()
+    #define JSON_TRY if(true)
+    #define JSON_CATCH(exception) if(false)
+    #define JSON_INTERNAL_CATCH(exception) if(false)
+#endif
+
+// override exception macros
+#if defined(JSON_THROW_USER)
+    #undef JSON_THROW
+    #define JSON_THROW JSON_THROW_USER
+#endif
+#if defined(JSON_TRY_USER)
+    #undef JSON_TRY
+    #define JSON_TRY JSON_TRY_USER
+#endif
+#if defined(JSON_CATCH_USER)
+    #undef JSON_CATCH
+    #define JSON_CATCH JSON_CATCH_USER
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_CATCH_USER
+#endif
+#if defined(JSON_INTERNAL_CATCH_USER)
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_INTERNAL_CATCH_USER
+#endif
+
+// allow overriding assert
+#if !defined(JSON_ASSERT)
+    #include <cassert> // assert
+    #define JSON_ASSERT(x) assert(x)
+#endif
+
+// allow to access some private functions (needed by the test suite)
+#if defined(JSON_TESTS_PRIVATE)
+    #define JSON_PRIVATE_UNLESS_TESTED public
+#else
+    #define JSON_PRIVATE_UNLESS_TESTED private
+#endif
+
+/*!
+@brief macro to briefly define a mapping between an enum and JSON
+@def NLOHMANN_JSON_SERIALIZE_ENUM
+@since version 3.4.0
+*/
+#define NLOHMANN_JSON_SERIALIZE_ENUM(ENUM_TYPE, ...)                                            \
+    template<typename BasicJsonType>                                                            \
+    inline void to_json(BasicJsonType& j, const ENUM_TYPE& e)                                   \
+    {                                                                                           \
+        /* NOLINTNEXTLINE(modernize-type-traits) we use C++11 */                                \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        /* NOLINTNEXTLINE(modernize-avoid-c-arrays) we don't want to depend on <array> */       \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [e](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool  \
+        {                                                                                       \
+            return ej_pair.first == e;                                                          \
+        });                                                                                     \
+        j = ((it != std::end(m)) ? it : std::begin(m))->second;                                 \
+    }                                                                                           \
+    template<typename BasicJsonType>                                                            \
+    inline void from_json(const BasicJsonType& j, ENUM_TYPE& e)                                 \
+    {                                                                                           \
+        /* NOLINTNEXTLINE(modernize-type-traits) we use C++11 */                                \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        /* NOLINTNEXTLINE(modernize-avoid-c-arrays) we don't want to depend on <array> */       \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [&j](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool \
+        {                                                                                       \
+            return ej_pair.second == j;                                                         \
+        });                                                                                     \
+        e = ((it != std::end(m)) ? it : std::begin(m))->first;                                  \
+    }
+
+// Ugly macros to avoid uglier copy-paste when specializing basic_json. They
+// may be removed in the future once the class is split.
+
+#define NLOHMANN_BASIC_JSON_TPL_DECLARATION                                \
+    template<template<typename, typename, typename...> class ObjectType,   \
+             template<typename, typename...> class ArrayType,              \
+             class StringType, class BooleanType, class NumberIntegerType, \
+             class NumberUnsignedType, class NumberFloatType,              \
+             template<typename> class AllocatorType,                       \
+             template<typename, typename = void> class JSONSerializer,     \
+             class BinaryType,                                             \
+             class CustomBaseClass>
+
+#define NLOHMANN_BASIC_JSON_TPL                                            \
+    basic_json<ObjectType, ArrayType, StringType, BooleanType,             \
+    NumberIntegerType, NumberUnsignedType, NumberFloatType,                \
+    AllocatorType, JSONSerializer, BinaryType, CustomBaseClass>
+
+// Macros to simplify conversion from/to types
+
+#define NLOHMANN_JSON_EXPAND( x ) x
+#define NLOHMANN_JSON_GET_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, _64, NAME,...) NAME
+#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \
+        NLOHMANN_JSON_PASTE64, \
+        NLOHMANN_JSON_PASTE63, \
+        NLOHMANN_JSON_PASTE62, \
+        NLOHMANN_JSON_PASTE61, \
+        NLOHMANN_JSON_PASTE60, \
+        NLOHMANN_JSON_PASTE59, \
+        NLOHMANN_JSON_PASTE58, \
+        NLOHMANN_JSON_PASTE57, \
+        NLOHMANN_JSON_PASTE56, \
+        NLOHMANN_JSON_PASTE55, \
+        NLOHMANN_JSON_PASTE54, \
+        NLOHMANN_JSON_PASTE53, \
+        NLOHMANN_JSON_PASTE52, \
+        NLOHMANN_JSON_PASTE51, \
+        NLOHMANN_JSON_PASTE50, \
+        NLOHMANN_JSON_PASTE49, \
+        NLOHMANN_JSON_PASTE48, \
+        NLOHMANN_JSON_PASTE47, \
+        NLOHMANN_JSON_PASTE46, \
+        NLOHMANN_JSON_PASTE45, \
+        NLOHMANN_JSON_PASTE44, \
+        NLOHMANN_JSON_PASTE43, \
+        NLOHMANN_JSON_PASTE42, \
+        NLOHMANN_JSON_PASTE41, \
+        NLOHMANN_JSON_PASTE40, \
+        NLOHMANN_JSON_PASTE39, \
+        NLOHMANN_JSON_PASTE38, \
+        NLOHMANN_JSON_PASTE37, \
+        NLOHMANN_JSON_PASTE36, \
+        NLOHMANN_JSON_PASTE35, \
+        NLOHMANN_JSON_PASTE34, \
+        NLOHMANN_JSON_PASTE33, \
+        NLOHMANN_JSON_PASTE32, \
+        NLOHMANN_JSON_PASTE31, \
+        NLOHMANN_JSON_PASTE30, \
+        NLOHMANN_JSON_PASTE29, \
+        NLOHMANN_JSON_PASTE28, \
+        NLOHMANN_JSON_PASTE27, \
+        NLOHMANN_JSON_PASTE26, \
+        NLOHMANN_JSON_PASTE25, \
+        NLOHMANN_JSON_PASTE24, \
+        NLOHMANN_JSON_PASTE23, \
+        NLOHMANN_JSON_PASTE22, \
+        NLOHMANN_JSON_PASTE21, \
+        NLOHMANN_JSON_PASTE20, \
+        NLOHMANN_JSON_PASTE19, \
+        NLOHMANN_JSON_PASTE18, \
+        NLOHMANN_JSON_PASTE17, \
+        NLOHMANN_JSON_PASTE16, \
+        NLOHMANN_JSON_PASTE15, \
+        NLOHMANN_JSON_PASTE14, \
+        NLOHMANN_JSON_PASTE13, \
+        NLOHMANN_JSON_PASTE12, \
+        NLOHMANN_JSON_PASTE11, \
+        NLOHMANN_JSON_PASTE10, \
+        NLOHMANN_JSON_PASTE9, \
+        NLOHMANN_JSON_PASTE8, \
+        NLOHMANN_JSON_PASTE7, \
+        NLOHMANN_JSON_PASTE6, \
+        NLOHMANN_JSON_PASTE5, \
+        NLOHMANN_JSON_PASTE4, \
+        NLOHMANN_JSON_PASTE3, \
+        NLOHMANN_JSON_PASTE2, \
+        NLOHMANN_JSON_PASTE1)(__VA_ARGS__))
+#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)
+#define NLOHMANN_JSON_PASTE3(func, v1, v2) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE2(func, v2)
+#define NLOHMANN_JSON_PASTE4(func, v1, v2, v3) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE3(func, v2, v3)
+#define NLOHMANN_JSON_PASTE5(func, v1, v2, v3, v4) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE4(func, v2, v3, v4)
+#define NLOHMANN_JSON_PASTE6(func, v1, v2, v3, v4, v5) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE5(func, v2, v3, v4, v5)
+#define NLOHMANN_JSON_PASTE7(func, v1, v2, v3, v4, v5, v6) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE6(func, v2, v3, v4, v5, v6)
+#define NLOHMANN_JSON_PASTE8(func, v1, v2, v3, v4, v5, v6, v7) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE7(func, v2, v3, v4, v5, v6, v7)
+#define NLOHMANN_JSON_PASTE9(func, v1, v2, v3, v4, v5, v6, v7, v8) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE8(func, v2, v3, v4, v5, v6, v7, v8)
+#define NLOHMANN_JSON_PASTE10(func, v1, v2, v3, v4, v5, v6, v7, v8, v9) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE9(func, v2, v3, v4, v5, v6, v7, v8, v9)
+#define NLOHMANN_JSON_PASTE11(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE10(func, v2, v3, v4, v5, v6, v7, v8, v9, v10)
+#define NLOHMANN_JSON_PASTE12(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE11(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11)
+#define NLOHMANN_JSON_PASTE13(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE12(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12)
+#define NLOHMANN_JSON_PASTE14(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE13(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13)
+#define NLOHMANN_JSON_PASTE15(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE14(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14)
+#define NLOHMANN_JSON_PASTE16(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE15(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15)
+#define NLOHMANN_JSON_PASTE17(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE16(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16)
+#define NLOHMANN_JSON_PASTE18(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE17(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17)
+#define NLOHMANN_JSON_PASTE19(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE18(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18)
+#define NLOHMANN_JSON_PASTE20(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE19(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19)
+#define NLOHMANN_JSON_PASTE21(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE20(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20)
+#define NLOHMANN_JSON_PASTE22(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE21(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21)
+#define NLOHMANN_JSON_PASTE23(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE22(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22)
+#define NLOHMANN_JSON_PASTE24(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE23(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23)
+#define NLOHMANN_JSON_PASTE25(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE24(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24)
+#define NLOHMANN_JSON_PASTE26(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE25(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25)
+#define NLOHMANN_JSON_PASTE27(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE26(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26)
+#define NLOHMANN_JSON_PASTE28(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE27(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27)
+#define NLOHMANN_JSON_PASTE29(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE28(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28)
+#define NLOHMANN_JSON_PASTE30(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE29(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29)
+#define NLOHMANN_JSON_PASTE31(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE30(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30)
+#define NLOHMANN_JSON_PASTE32(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE31(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31)
+#define NLOHMANN_JSON_PASTE33(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE32(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32)
+#define NLOHMANN_JSON_PASTE34(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE33(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33)
+#define NLOHMANN_JSON_PASTE35(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE34(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34)
+#define NLOHMANN_JSON_PASTE36(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE35(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35)
+#define NLOHMANN_JSON_PASTE37(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE36(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36)
+#define NLOHMANN_JSON_PASTE38(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE37(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37)
+#define NLOHMANN_JSON_PASTE39(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE38(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38)
+#define NLOHMANN_JSON_PASTE40(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE39(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39)
+#define NLOHMANN_JSON_PASTE41(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE40(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40)
+#define NLOHMANN_JSON_PASTE42(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE41(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41)
+#define NLOHMANN_JSON_PASTE43(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE42(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42)
+#define NLOHMANN_JSON_PASTE44(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE43(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43)
+#define NLOHMANN_JSON_PASTE45(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE44(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44)
+#define NLOHMANN_JSON_PASTE46(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE45(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45)
+#define NLOHMANN_JSON_PASTE47(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE46(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46)
+#define NLOHMANN_JSON_PASTE48(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE47(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47)
+#define NLOHMANN_JSON_PASTE49(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE48(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48)
+#define NLOHMANN_JSON_PASTE50(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE49(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49)
+#define NLOHMANN_JSON_PASTE51(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE50(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50)
+#define NLOHMANN_JSON_PASTE52(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE51(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51)
+#define NLOHMANN_JSON_PASTE53(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE52(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52)
+#define NLOHMANN_JSON_PASTE54(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE53(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53)
+#define NLOHMANN_JSON_PASTE55(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE54(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54)
+#define NLOHMANN_JSON_PASTE56(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE55(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55)
+#define NLOHMANN_JSON_PASTE57(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE56(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56)
+#define NLOHMANN_JSON_PASTE58(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE57(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57)
+#define NLOHMANN_JSON_PASTE59(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE58(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58)
+#define NLOHMANN_JSON_PASTE60(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE59(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59)
+#define NLOHMANN_JSON_PASTE61(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE60(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60)
+#define NLOHMANN_JSON_PASTE62(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE61(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61)
+#define NLOHMANN_JSON_PASTE63(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE62(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62)
+#define NLOHMANN_JSON_PASTE64(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE63(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63)
+
+#define NLOHMANN_JSON_TO(v1) nlohmann_json_j[#v1] = nlohmann_json_t.v1;
+#define NLOHMANN_JSON_FROM(v1) nlohmann_json_j.at(#v1).get_to(nlohmann_json_t.v1);
+#define NLOHMANN_JSON_FROM_WITH_DEFAULT(v1) nlohmann_json_t.v1 = nlohmann_json_j.value(#v1, nlohmann_json_default_obj.v1);
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) }
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE
+@since version 3.11.x
+*/
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE(Type, BaseType, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { nlohmann::from_json(nlohmann_json_j, static_cast<BaseType&>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT(Type, BaseType, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType&>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { nlohmann::from_json(nlohmann_json_j, static_cast<BaseType&>(nlohmann_json_t)); const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE(Type, BaseType, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE
+@since version 3.11.x
+*/
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE(Type, BaseType, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { nlohmann::from_json(nlohmann_json_j, static_cast<BaseType&>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT(Type, BaseType, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { nlohmann::from_json(nlohmann_json_j, static_cast<BaseType&>(nlohmann_json_t)); const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(Type, BaseType, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+
+// inspired from https://stackoverflow.com/a/26745591
+// allows to call any std function as if (e.g. with begin):
+// using std::begin; begin(x);
+//
+// it allows using the detected idiom to retrieve the return type
+// of such an expression
+#define NLOHMANN_CAN_CALL_STD_FUNC_IMPL(std_name)                                 \
+    namespace detail {                                                            \
+    using std::std_name;                                                          \
+    \
+    template<typename... T>                                                       \
+    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
+    }                                                                             \
+    \
+    namespace detail2 {                                                           \
+    struct std_name##_tag                                                         \
+    {                                                                             \
+    };                                                                            \
+    \
+    template<typename... T>                                                       \
+    std_name##_tag std_name(T&&...);                                              \
+    \
+    template<typename... T>                                                       \
+    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
+    \
+    template<typename... T>                                                       \
+    struct would_call_std_##std_name                                              \
+    {                                                                             \
+        static constexpr auto const value = ::nlohmann::detail::                  \
+                                            is_detected_exact<std_name##_tag, result_of_##std_name, T...>::value; \
+    };                                                                            \
+    } /* namespace detail2 */ \
+    \
+    template<typename... T>                                                       \
+    struct would_call_std_##std_name : detail2::would_call_std_##std_name<T...>   \
+    {                                                                             \
+    }
+
+#ifndef JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_USE_IMPLICIT_CONVERSIONS 1
+#endif
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_EXPLICIT
+#else
+    #define JSON_EXPLICIT explicit
+#endif
+
+#ifndef JSON_DISABLE_ENUM_SERIALIZATION
+    #define JSON_DISABLE_ENUM_SERIALIZATION 0
+#endif
+
+#ifndef JSON_USE_GLOBAL_UDLS
+    #define JSON_USE_GLOBAL_UDLS 1
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/macro_unscope.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/macro_unscope.hpp
new file mode 100644
index 00000000..256df809
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/macro_unscope.hpp
@@ -0,0 +1,45 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+// restore clang diagnostic settings
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+
+// clean up
+#undef JSON_ASSERT
+#undef JSON_INTERNAL_CATCH
+#undef JSON_THROW
+#undef JSON_PRIVATE_UNLESS_TESTED
+#undef NLOHMANN_BASIC_JSON_TPL_DECLARATION
+#undef NLOHMANN_BASIC_JSON_TPL
+#undef JSON_EXPLICIT
+#undef NLOHMANN_CAN_CALL_STD_FUNC_IMPL
+#undef JSON_INLINE_VARIABLE
+#undef JSON_NO_UNIQUE_ADDRESS
+#undef JSON_DISABLE_ENUM_SERIALIZATION
+#undef JSON_USE_GLOBAL_UDLS
+
+#ifndef JSON_TEST_KEEP_MACROS
+    #undef JSON_CATCH
+    #undef JSON_TRY
+    #undef JSON_HAS_CPP_11
+    #undef JSON_HAS_CPP_14
+    #undef JSON_HAS_CPP_17
+    #undef JSON_HAS_CPP_20
+    #undef JSON_HAS_FILESYSTEM
+    #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+    #undef JSON_HAS_THREE_WAY_COMPARISON
+    #undef JSON_HAS_RANGES
+    #undef JSON_HAS_STATIC_RTTI
+    #undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+#endif
+
+#include <nlohmann/thirdparty/hedley/hedley_undef.hpp>
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/call_std/begin.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/call_std/begin.hpp
new file mode 100644
index 00000000..ee5b1abd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/call_std/begin.hpp
@@ -0,0 +1,17 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <nlohmann/detail/macro_scope.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+NLOHMANN_CAN_CALL_STD_FUNC_IMPL(begin);
+
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/call_std/end.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/call_std/end.hpp
new file mode 100644
index 00000000..45edb2f3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/call_std/end.hpp
@@ -0,0 +1,17 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <nlohmann/detail/macro_scope.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+NLOHMANN_CAN_CALL_STD_FUNC_IMPL(end);
+
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/cpp_future.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/cpp_future.hpp
new file mode 100644
index 00000000..78644aa5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/cpp_future.hpp
@@ -0,0 +1,171 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2018 The Abseil Authors
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <type_traits> // conditional, enable_if, false_type, integral_constant, is_constructible, is_integral, is_same, remove_cv, remove_reference, true_type
+#include <utility> // index_sequence, make_index_sequence, index_sequence_for
+
+#include <nlohmann/detail/macro_scope.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename T>
+using uncvref_t = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
+
+#ifdef JSON_HAS_CPP_14
+
+// the following utilities are natively available in C++14
+using std::enable_if_t;
+using std::index_sequence;
+using std::make_index_sequence;
+using std::index_sequence_for;
+
+#else
+
+// alias templates to reduce boilerplate
+template<bool B, typename T = void>
+using enable_if_t = typename std::enable_if<B, T>::type;
+
+// The following code is taken from https://github.com/abseil/abseil-cpp/blob/10cb35e459f5ecca5b2ff107635da0bfa41011b4/absl/utility/utility.h
+// which is part of Google Abseil (https://github.com/abseil/abseil-cpp), licensed under the Apache License 2.0.
+
+//// START OF CODE FROM GOOGLE ABSEIL
+
+// integer_sequence
+//
+// Class template representing a compile-time integer sequence. An instantiation
+// of `integer_sequence<T, Ints...>` has a sequence of integers encoded in its
+// type through its template arguments (which is a common need when
+// working with C++11 variadic templates). `absl::integer_sequence` is designed
+// to be a drop-in replacement for C++14's `std::integer_sequence`.
+//
+// Example:
+//
+//   template< class T, T... Ints >
+//   void user_function(integer_sequence<T, Ints...>);
+//
+//   int main()
+//   {
+//     // user_function's `T` will be deduced to `int` and `Ints...`
+//     // will be deduced to `0, 1, 2, 3, 4`.
+//     user_function(make_integer_sequence<int, 5>());
+//   }
+template <typename T, T... Ints>
+struct integer_sequence
+{
+    using value_type = T;
+    static constexpr std::size_t size() noexcept
+    {
+        return sizeof...(Ints);
+    }
+};
+
+// index_sequence
+//
+// A helper template for an `integer_sequence` of `size_t`,
+// `absl::index_sequence` is designed to be a drop-in replacement for C++14's
+// `std::index_sequence`.
+template <size_t... Ints>
+using index_sequence = integer_sequence<size_t, Ints...>;
+
+namespace utility_internal
+{
+
+template <typename Seq, size_t SeqSize, size_t Rem>
+struct Extend;
+
+// Note that SeqSize == sizeof...(Ints). It's passed explicitly for efficiency.
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 0>
+{
+    using type = integer_sequence < T, Ints..., (Ints + SeqSize)... >;
+};
+
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 1>
+{
+    using type = integer_sequence < T, Ints..., (Ints + SeqSize)..., 2 * SeqSize >;
+};
+
+// Recursion helper for 'make_integer_sequence<T, N>'.
+// 'Gen<T, N>::type' is an alias for 'integer_sequence<T, 0, 1, ... N-1>'.
+template <typename T, size_t N>
+struct Gen
+{
+    using type =
+        typename Extend < typename Gen < T, N / 2 >::type, N / 2, N % 2 >::type;
+};
+
+template <typename T>
+struct Gen<T, 0>
+{
+    using type = integer_sequence<T>;
+};
+
+}  // namespace utility_internal
+
+// Compile-time sequences of integers
+
+// make_integer_sequence
+//
+// This template alias is equivalent to
+// `integer_sequence<int, 0, 1, ..., N-1>`, and is designed to be a drop-in
+// replacement for C++14's `std::make_integer_sequence`.
+template <typename T, T N>
+using make_integer_sequence = typename utility_internal::Gen<T, N>::type;
+
+// make_index_sequence
+//
+// This template alias is equivalent to `index_sequence<0, 1, ..., N-1>`,
+// and is designed to be a drop-in replacement for C++14's
+// `std::make_index_sequence`.
+template <size_t N>
+using make_index_sequence = make_integer_sequence<size_t, N>;
+
+// index_sequence_for
+//
+// Converts a typename pack into an index sequence of the same length, and
+// is designed to be a drop-in replacement for C++14's
+// `std::index_sequence_for()`
+template <typename... Ts>
+using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
+
+//// END OF CODE FROM GOOGLE ABSEIL
+
+#endif
+
+// dispatch utility (taken from ranges-v3)
+template<unsigned N> struct priority_tag : priority_tag < N - 1 > {};
+template<> struct priority_tag<0> {};
+
+// taken from ranges-v3
+template<typename T>
+struct static_const
+{
+    static JSON_INLINE_VARIABLE constexpr T value{};
+};
+
+#ifndef JSON_HAS_CPP_17
+    template<typename T>
+    constexpr T static_const<T>::value;
+#endif
+
+template<typename T, typename... Args>
+constexpr std::array<T, sizeof...(Args)> make_array(Args&& ... args)
+{
+    return std::array<T, sizeof...(Args)> {{static_cast<T>(std::forward<Args>(args))...}};
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/detected.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/detected.hpp
new file mode 100644
index 00000000..13422fd3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/detected.hpp
@@ -0,0 +1,70 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <type_traits>
+
+#include <nlohmann/detail/meta/void_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// https://en.cppreference.com/w/cpp/experimental/is_detected
+struct nonesuch
+{
+    nonesuch() = delete;
+    ~nonesuch() = delete;
+    nonesuch(nonesuch const&) = delete;
+    nonesuch(nonesuch const&&) = delete;
+    void operator=(nonesuch const&) = delete;
+    void operator=(nonesuch&&) = delete;
+};
+
+template<class Default,
+         class AlwaysVoid,
+         template<class...> class Op,
+         class... Args>
+struct detector
+{
+    using value_t = std::false_type;
+    using type = Default;
+};
+
+template<class Default, template<class...> class Op, class... Args>
+struct detector<Default, void_t<Op<Args...>>, Op, Args...>
+{
+    using value_t = std::true_type;
+    using type = Op<Args...>;
+};
+
+template<template<class...> class Op, class... Args>
+using is_detected = typename detector<nonesuch, void, Op, Args...>::value_t;
+
+template<template<class...> class Op, class... Args>
+struct is_detected_lazy : is_detected<Op, Args...> { };
+
+template<template<class...> class Op, class... Args>
+using detected_t = typename detector<nonesuch, void, Op, Args...>::type;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or = detector<Default, void, Op, Args...>;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or_t = typename detected_or<Default, Op, Args...>::type;
+
+template<class Expected, template<class...> class Op, class... Args>
+using is_detected_exact = std::is_same<Expected, detected_t<Op, Args...>>;
+
+template<class To, template<class...> class Op, class... Args>
+using is_detected_convertible =
+    std::is_convertible<detected_t<Op, Args...>, To>;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/identity_tag.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/identity_tag.hpp
new file mode 100644
index 00000000..d6b6059d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/identity_tag.hpp
@@ -0,0 +1,21 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// dispatching helper struct
+template <class T> struct identity_tag {};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/is_sax.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/is_sax.hpp
new file mode 100644
index 00000000..e36257a3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/is_sax.hpp
@@ -0,0 +1,159 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstdint> // size_t
+#include <utility> // declval
+#include <string> // string
+
+#include <nlohmann/detail/abi_macros.hpp>
+#include <nlohmann/detail/meta/detected.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename T>
+using null_function_t = decltype(std::declval<T&>().null());
+
+template<typename T>
+using boolean_function_t =
+    decltype(std::declval<T&>().boolean(std::declval<bool>()));
+
+template<typename T, typename Integer>
+using number_integer_function_t =
+    decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
+
+template<typename T, typename Unsigned>
+using number_unsigned_function_t =
+    decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
+
+template<typename T, typename Float, typename String>
+using number_float_function_t = decltype(std::declval<T&>().number_float(
+                                    std::declval<Float>(), std::declval<const String&>()));
+
+template<typename T, typename String>
+using string_function_t =
+    decltype(std::declval<T&>().string(std::declval<String&>()));
+
+template<typename T, typename Binary>
+using binary_function_t =
+    decltype(std::declval<T&>().binary(std::declval<Binary&>()));
+
+template<typename T>
+using start_object_function_t =
+    decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
+
+template<typename T, typename String>
+using key_function_t =
+    decltype(std::declval<T&>().key(std::declval<String&>()));
+
+template<typename T>
+using end_object_function_t = decltype(std::declval<T&>().end_object());
+
+template<typename T>
+using start_array_function_t =
+    decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
+
+template<typename T>
+using end_array_function_t = decltype(std::declval<T&>().end_array());
+
+template<typename T, typename Exception>
+using parse_error_function_t = decltype(std::declval<T&>().parse_error(
+        std::declval<std::size_t>(), std::declval<const std::string&>(),
+        std::declval<const Exception&>()));
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static constexpr bool value =
+        is_detected_exact<bool, null_function_t, SAX>::value &&
+        is_detected_exact<bool, boolean_function_t, SAX>::value &&
+        is_detected_exact<bool, number_integer_function_t, SAX, number_integer_t>::value &&
+        is_detected_exact<bool, number_unsigned_function_t, SAX, number_unsigned_t>::value &&
+        is_detected_exact<bool, number_float_function_t, SAX, number_float_t, string_t>::value &&
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value &&
+        is_detected_exact<bool, start_object_function_t, SAX>::value &&
+        is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, end_object_function_t, SAX>::value &&
+        is_detected_exact<bool, start_array_function_t, SAX>::value &&
+        is_detected_exact<bool, end_array_function_t, SAX>::value &&
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
+};
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax_static_asserts
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static_assert(is_detected_exact<bool, null_function_t, SAX>::value,
+                  "Missing/invalid function: bool null()");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(
+        is_detected_exact<bool, number_integer_function_t, SAX,
+        number_integer_t>::value,
+        "Missing/invalid function: bool number_integer(number_integer_t)");
+    static_assert(
+        is_detected_exact<bool, number_unsigned_function_t, SAX,
+        number_unsigned_t>::value,
+        "Missing/invalid function: bool number_unsigned(number_unsigned_t)");
+    static_assert(is_detected_exact<bool, number_float_function_t, SAX,
+                  number_float_t, string_t>::value,
+                  "Missing/invalid function: bool number_float(number_float_t, const string_t&)");
+    static_assert(
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value,
+        "Missing/invalid function: bool string(string_t&)");
+    static_assert(
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value,
+        "Missing/invalid function: bool binary(binary_t&)");
+    static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_object(std::size_t)");
+    static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value,
+                  "Missing/invalid function: bool key(string_t&)");
+    static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_object()");
+    static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_array(std::size_t)");
+    static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_array()");
+    static_assert(
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
+        "Missing/invalid function: bool parse_error(std::size_t, const "
+        "std::string&, const exception&)");
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/std_fs.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/std_fs.hpp
new file mode 100644
index 00000000..70c0ac98
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/std_fs.hpp
@@ -0,0 +1,29 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <nlohmann/detail/macro_scope.hpp>
+
+#if JSON_HAS_EXPERIMENTAL_FILESYSTEM
+#include <experimental/filesystem>
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+namespace std_fs = std::experimental::filesystem;
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+#elif JSON_HAS_FILESYSTEM
+#include <filesystem> // NOLINT(build/c++17)
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+namespace std_fs = std::filesystem;
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/type_traits.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/type_traits.hpp
new file mode 100644
index 00000000..9c2d2366
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/type_traits.hpp
@@ -0,0 +1,795 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <limits> // numeric_limits
+#include <string> // char_traits
+#include <tuple> // tuple
+#include <type_traits> // false_type, is_constructible, is_integral, is_same, true_type
+#include <utility> // declval
+
+#include <nlohmann/detail/iterators/iterator_traits.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/call_std/begin.hpp>
+#include <nlohmann/detail/meta/call_std/end.hpp>
+#include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/meta/detected.hpp>
+#include <nlohmann/json_fwd.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+/*!
+@brief detail namespace with internal helper functions
+
+This namespace collects functions that should not be exposed,
+implementations of some @ref basic_json methods, and meta-programming helpers.
+
+@since version 2.1.0
+*/
+namespace detail
+{
+
+/////////////
+// helpers //
+/////////////
+
+// Note to maintainers:
+//
+// Every trait in this file expects a non CV-qualified type.
+// The only exceptions are in the 'aliases for detected' section
+// (i.e. those of the form: decltype(T::member_function(std::declval<T>())))
+//
+// In this case, T has to be properly CV-qualified to constraint the function arguments
+// (e.g. to_json(BasicJsonType&, const T&))
+
+template<typename> struct is_basic_json : std::false_type {};
+
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
+
+// used by exceptions create() member functions
+// true_type for pointer to possibly cv-qualified basic_json or std::nullptr_t
+// false_type otherwise
+template<typename BasicJsonContext>
+struct is_basic_json_context :
+    std::integral_constant < bool,
+    is_basic_json<typename std::remove_cv<typename std::remove_pointer<BasicJsonContext>::type>::type>::value
+    || std::is_same<BasicJsonContext, std::nullptr_t>::value >
+{};
+
+//////////////////////
+// json_ref helpers //
+//////////////////////
+
+template<typename>
+class json_ref;
+
+template<typename>
+struct is_json_ref : std::false_type {};
+
+template<typename T>
+struct is_json_ref<json_ref<T>> : std::true_type {};
+
+//////////////////////////
+// aliases for detected //
+//////////////////////////
+
+template<typename T>
+using mapped_type_t = typename T::mapped_type;
+
+template<typename T>
+using key_type_t = typename T::key_type;
+
+template<typename T>
+using value_type_t = typename T::value_type;
+
+template<typename T>
+using difference_type_t = typename T::difference_type;
+
+template<typename T>
+using pointer_t = typename T::pointer;
+
+template<typename T>
+using reference_t = typename T::reference;
+
+template<typename T>
+using iterator_category_t = typename T::iterator_category;
+
+template<typename T, typename... Args>
+using to_json_function = decltype(T::to_json(std::declval<Args>()...));
+
+template<typename T, typename... Args>
+using from_json_function = decltype(T::from_json(std::declval<Args>()...));
+
+template<typename T, typename U>
+using get_template_function = decltype(std::declval<T>().template get<U>());
+
+// trait checking if JSONSerializer<T>::from_json(json const&, udt&) exists
+template<typename BasicJsonType, typename T, typename = void>
+struct has_from_json : std::false_type {};
+
+// trait checking if j.get<T> is valid
+// use this trait instead of std::is_constructible or std::is_convertible,
+// both rely on, or make use of implicit conversions, and thus fail when T
+// has several constructors/operator= (see https://github.com/nlohmann/json/issues/958)
+template <typename BasicJsonType, typename T>
+struct is_getable
+{
+    static constexpr bool value = is_detected<get_template_function, const BasicJsonType&, T>::value;
+};
+
+template<typename BasicJsonType, typename T>
+struct has_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, from_json_function, serializer,
+        const BasicJsonType&, T&>::value;
+};
+
+// This trait checks if JSONSerializer<T>::from_json(json const&) exists
+// this overload is used for non-default-constructible user-defined-types
+template<typename BasicJsonType, typename T, typename = void>
+struct has_non_default_from_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_non_default_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<T, from_json_function, serializer,
+        const BasicJsonType&>::value;
+};
+
+// This trait checks if BasicJsonType::json_serializer<T>::to_json exists
+// Do not evaluate the trait when T is a basic_json type, to avoid template instantiation infinite recursion.
+template<typename BasicJsonType, typename T, typename = void>
+struct has_to_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_to_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, to_json_function, serializer, BasicJsonType&,
+        T>::value;
+};
+
+template<typename T>
+using detect_key_compare = typename T::key_compare;
+
+template<typename T>
+struct has_key_compare : std::integral_constant<bool, is_detected<detect_key_compare, T>::value> {};
+
+// obtains the actual object key comparator
+template<typename BasicJsonType>
+struct actual_object_comparator
+{
+    using object_t = typename BasicJsonType::object_t;
+    using object_comparator_t = typename BasicJsonType::default_object_comparator_t;
+    using type = typename std::conditional < has_key_compare<object_t>::value,
+          typename object_t::key_compare, object_comparator_t>::type;
+};
+
+template<typename BasicJsonType>
+using actual_object_comparator_t = typename actual_object_comparator<BasicJsonType>::type;
+
+/////////////////
+// char_traits //
+/////////////////
+
+// Primary template of char_traits calls std char_traits
+template<typename T>
+struct char_traits : std::char_traits<T>
+{};
+
+// Explicitly define char traits for unsigned char since it is not standard
+template<>
+struct char_traits<unsigned char> : std::char_traits<char>
+{
+    using char_type = unsigned char;
+    using int_type = uint64_t;
+
+    // Redefine to_int_type function
+    static int_type to_int_type(char_type c) noexcept
+    {
+        return static_cast<int_type>(c);
+    }
+
+    static char_type to_char_type(int_type i) noexcept
+    {
+        return static_cast<char_type>(i);
+    }
+
+    static constexpr int_type eof() noexcept
+    {
+        return static_cast<int_type>(std::char_traits<char>::eof());
+    }
+};
+
+// Explicitly define char traits for signed char since it is not standard
+template<>
+struct char_traits<signed char> : std::char_traits<char>
+{
+    using char_type = signed char;
+    using int_type = uint64_t;
+
+    // Redefine to_int_type function
+    static int_type to_int_type(char_type c) noexcept
+    {
+        return static_cast<int_type>(c);
+    }
+
+    static char_type to_char_type(int_type i) noexcept
+    {
+        return static_cast<char_type>(i);
+    }
+
+    static constexpr int_type eof() noexcept
+    {
+        return static_cast<int_type>(std::char_traits<char>::eof());
+    }
+};
+
+///////////////////
+// is_ functions //
+///////////////////
+
+// https://en.cppreference.com/w/cpp/types/conjunction
+template<class...> struct conjunction : std::true_type { };
+template<class B> struct conjunction<B> : B { };
+template<class B, class... Bn>
+struct conjunction<B, Bn...>
+: std::conditional<static_cast<bool>(B::value), conjunction<Bn...>, B>::type {};
+
+// https://en.cppreference.com/w/cpp/types/negation
+template<class B> struct negation : std::integral_constant < bool, !B::value > { };
+
+// Reimplementation of is_constructible and is_default_constructible, due to them being broken for
+// std::pair and std::tuple until LWG 2367 fix (see https://cplusplus.github.io/LWG/lwg-defects.html#2367).
+// This causes compile errors in e.g. clang 3.5 or gcc 4.9.
+template <typename T>
+struct is_default_constructible : std::is_default_constructible<T> {};
+
+template <typename T1, typename T2>
+struct is_default_constructible<std::pair<T1, T2>>
+            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+
+template <typename T1, typename T2>
+struct is_default_constructible<const std::pair<T1, T2>>
+            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+
+template <typename... Ts>
+struct is_default_constructible<std::tuple<Ts...>>
+            : conjunction<is_default_constructible<Ts>...> {};
+
+template <typename... Ts>
+struct is_default_constructible<const std::tuple<Ts...>>
+            : conjunction<is_default_constructible<Ts>...> {};
+
+template <typename T, typename... Args>
+struct is_constructible : std::is_constructible<T, Args...> {};
+
+template <typename T1, typename T2>
+struct is_constructible<std::pair<T1, T2>> : is_default_constructible<std::pair<T1, T2>> {};
+
+template <typename T1, typename T2>
+struct is_constructible<const std::pair<T1, T2>> : is_default_constructible<const std::pair<T1, T2>> {};
+
+template <typename... Ts>
+struct is_constructible<std::tuple<Ts...>> : is_default_constructible<std::tuple<Ts...>> {};
+
+template <typename... Ts>
+struct is_constructible<const std::tuple<Ts...>> : is_default_constructible<const std::tuple<Ts...>> {};
+
+template<typename T, typename = void>
+struct is_iterator_traits : std::false_type {};
+
+template<typename T>
+struct is_iterator_traits<iterator_traits<T>>
+{
+  private:
+    using traits = iterator_traits<T>;
+
+  public:
+    static constexpr auto value =
+        is_detected<value_type_t, traits>::value &&
+        is_detected<difference_type_t, traits>::value &&
+        is_detected<pointer_t, traits>::value &&
+        is_detected<iterator_category_t, traits>::value &&
+        is_detected<reference_t, traits>::value;
+};
+
+template<typename T>
+struct is_range
+{
+  private:
+    using t_ref = typename std::add_lvalue_reference<T>::type;
+
+    using iterator = detected_t<result_of_begin, t_ref>;
+    using sentinel = detected_t<result_of_end, t_ref>;
+
+    // to be 100% correct, it should use https://en.cppreference.com/w/cpp/iterator/input_or_output_iterator
+    // and https://en.cppreference.com/w/cpp/iterator/sentinel_for
+    // but reimplementing these would be too much work, as a lot of other concepts are used underneath
+    static constexpr auto is_iterator_begin =
+        is_iterator_traits<iterator_traits<iterator>>::value;
+
+  public:
+    static constexpr bool value = !std::is_same<iterator, nonesuch>::value && !std::is_same<sentinel, nonesuch>::value && is_iterator_begin;
+};
+
+template<typename R>
+using iterator_t = enable_if_t<is_range<R>::value, result_of_begin<decltype(std::declval<R&>())>>;
+
+template<typename T>
+using range_value_t = value_type_t<iterator_traits<iterator_t<T>>>;
+
+// The following implementation of is_complete_type is taken from
+// https://blogs.msdn.microsoft.com/vcblog/2015/12/02/partial-support-for-expression-sfinae-in-vs-2015-update-1/
+// and is written by Xiang Fan who agreed to using it in this library.
+
+template<typename T, typename = void>
+struct is_complete_type : std::false_type {};
+
+template<typename T>
+struct is_complete_type<T, decltype(void(sizeof(T)))> : std::true_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType,
+         typename = void>
+struct is_compatible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type_impl <
+    BasicJsonType, CompatibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, CompatibleObjectType>::value&&
+    is_detected<key_type_t, CompatibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    // macOS's is_constructible does not play well with nonesuch...
+    static constexpr bool value =
+        is_constructible<typename object_t::key_type,
+        typename CompatibleObjectType::key_type>::value &&
+        is_constructible<typename object_t::mapped_type,
+        typename CompatibleObjectType::mapped_type>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type
+    : is_compatible_object_type_impl<BasicJsonType, CompatibleObjectType> {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         typename = void>
+struct is_constructible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type_impl <
+    BasicJsonType, ConstructibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, ConstructibleObjectType>::value&&
+    is_detected<key_type_t, ConstructibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    static constexpr bool value =
+        (is_default_constructible<ConstructibleObjectType>::value &&
+         (std::is_move_assignable<ConstructibleObjectType>::value ||
+          std::is_copy_assignable<ConstructibleObjectType>::value) &&
+         (is_constructible<typename ConstructibleObjectType::key_type,
+          typename object_t::key_type>::value &&
+          std::is_same <
+          typename object_t::mapped_type,
+          typename ConstructibleObjectType::mapped_type >::value)) ||
+        (has_from_json<BasicJsonType,
+         typename ConstructibleObjectType::mapped_type>::value ||
+         has_non_default_from_json <
+         BasicJsonType,
+         typename ConstructibleObjectType::mapped_type >::value);
+};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type
+    : is_constructible_object_type_impl<BasicJsonType,
+      ConstructibleObjectType> {};
+
+template<typename BasicJsonType, typename CompatibleStringType>
+struct is_compatible_string_type
+{
+    static constexpr auto value =
+        is_constructible<typename BasicJsonType::string_t, CompatibleStringType>::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleStringType>
+struct is_constructible_string_type
+{
+    // launder type through decltype() to fix compilation failure on ICPC
+#ifdef __INTEL_COMPILER
+    using laundered_type = decltype(std::declval<ConstructibleStringType>());
+#else
+    using laundered_type = ConstructibleStringType;
+#endif
+
+    static constexpr auto value =
+        conjunction <
+        is_constructible<laundered_type, typename BasicJsonType::string_t>,
+        is_detected_exact<typename BasicJsonType::string_t::value_type,
+        value_type_t, laundered_type >>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType, typename = void>
+struct is_compatible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type_impl <
+    BasicJsonType, CompatibleArrayType,
+    enable_if_t <
+    is_detected<iterator_t, CompatibleArrayType>::value&&
+    is_iterator_traits<iterator_traits<detected_t<iterator_t, CompatibleArrayType>>>::value&&
+// special case for types like std::filesystem::path whose iterator's value_type are themselves
+// c.f. https://github.com/nlohmann/json/pull/3073
+    !std::is_same<CompatibleArrayType, detected_t<range_value_t, CompatibleArrayType>>::value >>
+{
+    static constexpr bool value =
+        is_constructible<BasicJsonType,
+        range_value_t<CompatibleArrayType>>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type
+    : is_compatible_array_type_impl<BasicJsonType, CompatibleArrayType> {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType, typename = void>
+struct is_constructible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t<std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value >>
+            : std::true_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t < !std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value&&
+    !is_compatible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+    is_default_constructible<ConstructibleArrayType>::value&&
+(std::is_move_assignable<ConstructibleArrayType>::value ||
+ std::is_copy_assignable<ConstructibleArrayType>::value)&&
+is_detected<iterator_t, ConstructibleArrayType>::value&&
+is_iterator_traits<iterator_traits<detected_t<iterator_t, ConstructibleArrayType>>>::value&&
+is_detected<range_value_t, ConstructibleArrayType>::value&&
+// special case for types like std::filesystem::path whose iterator's value_type are themselves
+// c.f. https://github.com/nlohmann/json/pull/3073
+!std::is_same<ConstructibleArrayType, detected_t<range_value_t, ConstructibleArrayType>>::value&&
+        is_complete_type <
+        detected_t<range_value_t, ConstructibleArrayType >>::value >>
+{
+    using value_type = range_value_t<ConstructibleArrayType>;
+
+    static constexpr bool value =
+        std::is_same<value_type,
+        typename BasicJsonType::array_t::value_type>::value ||
+        has_from_json<BasicJsonType,
+        value_type>::value ||
+        has_non_default_from_json <
+        BasicJsonType,
+        value_type >::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type
+    : is_constructible_array_type_impl<BasicJsonType, ConstructibleArrayType> {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType,
+         typename = void>
+struct is_compatible_integer_type_impl : std::false_type {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type_impl <
+    RealIntegerType, CompatibleNumberIntegerType,
+    enable_if_t < std::is_integral<RealIntegerType>::value&&
+    std::is_integral<CompatibleNumberIntegerType>::value&&
+    !std::is_same<bool, CompatibleNumberIntegerType>::value >>
+{
+    // is there an assert somewhere on overflows?
+    using RealLimits = std::numeric_limits<RealIntegerType>;
+    using CompatibleLimits = std::numeric_limits<CompatibleNumberIntegerType>;
+
+    static constexpr auto value =
+        is_constructible<RealIntegerType,
+        CompatibleNumberIntegerType>::value &&
+        CompatibleLimits::is_integer &&
+        RealLimits::is_signed == CompatibleLimits::is_signed;
+};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type
+    : is_compatible_integer_type_impl<RealIntegerType,
+      CompatibleNumberIntegerType> {};
+
+template<typename BasicJsonType, typename CompatibleType, typename = void>
+struct is_compatible_type_impl: std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type_impl <
+    BasicJsonType, CompatibleType,
+    enable_if_t<is_complete_type<CompatibleType>::value >>
+{
+    static constexpr bool value =
+        has_to_json<BasicJsonType, CompatibleType>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type
+    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};
+
+template<typename T1, typename T2>
+struct is_constructible_tuple : std::false_type {};
+
+template<typename T1, typename... Args>
+struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
+
+template<typename BasicJsonType, typename T>
+struct is_json_iterator_of : std::false_type {};
+
+template<typename BasicJsonType>
+struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::iterator> : std::true_type {};
+
+template<typename BasicJsonType>
+struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::const_iterator> : std::true_type
+{};
+
+// checks if a given type T is a template specialization of Primary
+template<template <typename...> class Primary, typename T>
+struct is_specialization_of : std::false_type {};
+
+template<template <typename...> class Primary, typename... Args>
+struct is_specialization_of<Primary, Primary<Args...>> : std::true_type {};
+
+template<typename T>
+using is_json_pointer = is_specialization_of<::nlohmann::json_pointer, uncvref_t<T>>;
+
+// checks if A and B are comparable using Compare functor
+template<typename Compare, typename A, typename B, typename = void>
+struct is_comparable : std::false_type {};
+
+template<typename Compare, typename A, typename B>
+struct is_comparable<Compare, A, B, void_t<
+decltype(std::declval<Compare>()(std::declval<A>(), std::declval<B>())),
+decltype(std::declval<Compare>()(std::declval<B>(), std::declval<A>()))
+>> : std::true_type {};
+
+template<typename T>
+using detect_is_transparent = typename T::is_transparent;
+
+// type trait to check if KeyType can be used as object key (without a BasicJsonType)
+// see is_usable_as_basic_json_key_type below
+template<typename Comparator, typename ObjectKeyType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
+         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
+using is_usable_as_key_type = typename std::conditional <
+                              is_comparable<Comparator, ObjectKeyType, KeyTypeCVRef>::value
+                              && !(ExcludeObjectKeyType && std::is_same<KeyType,
+                                   ObjectKeyType>::value)
+                              && (!RequireTransparentComparator
+                                  || is_detected <detect_is_transparent, Comparator>::value)
+                              && !is_json_pointer<KeyType>::value,
+                              std::true_type,
+                              std::false_type >::type;
+
+// type trait to check if KeyType can be used as object key
+// true if:
+//   - KeyType is comparable with BasicJsonType::object_t::key_type
+//   - if ExcludeObjectKeyType is true, KeyType is not BasicJsonType::object_t::key_type
+//   - the comparator is transparent or RequireTransparentComparator is false
+//   - KeyType is not a JSON iterator or json_pointer
+template<typename BasicJsonType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
+         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
+using is_usable_as_basic_json_key_type = typename std::conditional <
+        is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
+        typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
+        RequireTransparentComparator, ExcludeObjectKeyType>::value
+        && !is_json_iterator_of<BasicJsonType, KeyType>::value,
+        std::true_type,
+        std::false_type >::type;
+
+template<typename ObjectType, typename KeyType>
+using detect_erase_with_key_type = decltype(std::declval<ObjectType&>().erase(std::declval<KeyType>()));
+
+// type trait to check if object_t has an erase() member functions accepting KeyType
+template<typename BasicJsonType, typename KeyType>
+using has_erase_with_key_type = typename std::conditional <
+                                is_detected <
+                                detect_erase_with_key_type,
+                                typename BasicJsonType::object_t, KeyType >::value,
+                                std::true_type,
+                                std::false_type >::type;
+
+// a naive helper to check if a type is an ordered_map (exploits the fact that
+// ordered_map inherits capacity() from std::vector)
+template <typename T>
+struct is_ordered_map
+{
+    using one = char;
+
+    struct two
+    {
+        char x[2]; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    };
+
+    template <typename C> static one test( decltype(&C::capacity) ) ;
+    template <typename C> static two test(...);
+
+    enum { value = sizeof(test<T>(nullptr)) == sizeof(char) }; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+};
+
+// to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
+template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
+T conditional_static_cast(U value)
+{
+    return static_cast<T>(value);
+}
+
+template<typename T, typename U, enable_if_t<std::is_same<T, U>::value, int> = 0>
+T conditional_static_cast(U value)
+{
+    return value;
+}
+
+template<typename... Types>
+using all_integral = conjunction<std::is_integral<Types>...>;
+
+template<typename... Types>
+using all_signed = conjunction<std::is_signed<Types>...>;
+
+template<typename... Types>
+using all_unsigned = conjunction<std::is_unsigned<Types>...>;
+
+// there's a disjunction trait in another PR; replace when merged
+template<typename... Types>
+using same_sign = std::integral_constant < bool,
+      all_signed<Types...>::value || all_unsigned<Types...>::value >;
+
+template<typename OfType, typename T>
+using never_out_of_range = std::integral_constant < bool,
+      (std::is_signed<OfType>::value && (sizeof(T) < sizeof(OfType)))
+      || (same_sign<OfType, T>::value && sizeof(OfType) == sizeof(T)) >;
+
+template<typename OfType, typename T,
+         bool OfTypeSigned = std::is_signed<OfType>::value,
+         bool TSigned = std::is_signed<T>::value>
+struct value_in_range_of_impl2;
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, false, false>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, true, false>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, false, true>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return val >= 0 && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, true, true>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) >= static_cast<CommonType>((std::numeric_limits<OfType>::min)())
+               && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T,
+         bool NeverOutOfRange = never_out_of_range<OfType, T>::value,
+         typename = detail::enable_if_t<all_integral<OfType, T>::value>>
+struct value_in_range_of_impl1;
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl1<OfType, T, false>
+{
+    static constexpr bool test(T val)
+    {
+        return value_in_range_of_impl2<OfType, T>::test(val);
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl1<OfType, T, true>
+{
+    static constexpr bool test(T /*val*/)
+    {
+        return true;
+    }
+};
+
+template<typename OfType, typename T>
+constexpr bool value_in_range_of(T val)
+{
+    return value_in_range_of_impl1<OfType, T>::test(val);
+}
+
+template<bool Value>
+using bool_constant = std::integral_constant<bool, Value>;
+
+///////////////////////////////////////////////////////////////////////////////
+// is_c_string
+///////////////////////////////////////////////////////////////////////////////
+
+namespace impl
+{
+
+template<typename T>
+constexpr bool is_c_string()
+{
+    using TUnExt = typename std::remove_extent<T>::type;
+    using TUnCVExt = typename std::remove_cv<TUnExt>::type;
+    using TUnPtr = typename std::remove_pointer<T>::type;
+    using TUnCVPtr = typename std::remove_cv<TUnPtr>::type;
+    return
+        (std::is_array<T>::value && std::is_same<TUnCVExt, char>::value)
+        || (std::is_pointer<T>::value && std::is_same<TUnCVPtr, char>::value);
+}
+
+}  // namespace impl
+
+// checks whether T is a [cv] char */[cv] char[] C string
+template<typename T>
+struct is_c_string : bool_constant<impl::is_c_string<T>()> {};
+
+template<typename T>
+using is_c_string_uncvref = is_c_string<uncvref_t<T>>;
+
+///////////////////////////////////////////////////////////////////////////////
+// is_transparent
+///////////////////////////////////////////////////////////////////////////////
+
+namespace impl
+{
+
+template<typename T>
+constexpr bool is_transparent()
+{
+    return is_detected<detect_is_transparent, T>::value;
+}
+
+}  // namespace impl
+
+// checks whether T has a member named is_transparent
+template<typename T>
+struct is_transparent : bool_constant<impl::is_transparent<T>()> {};
+
+///////////////////////////////////////////////////////////////////////////////
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/void_t.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/void_t.hpp
new file mode 100644
index 00000000..59b97a29
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/meta/void_t.hpp
@@ -0,0 +1,24 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename ...Ts> struct make_void
+{
+    using type = void;
+};
+template<typename ...Ts> using void_t = typename make_void<Ts...>::type;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/binary_writer.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/binary_writer.hpp
new file mode 100644
index 00000000..70dd752e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/binary_writer.hpp
@@ -0,0 +1,1838 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <algorithm> // reverse
+#include <array> // array
+#include <map> // map
+#include <cmath> // isnan, isinf
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstring> // memcpy
+#include <limits> // numeric_limits
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+#include <nlohmann/detail/input/binary_reader.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/output/output_adapters.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////
+// binary writer //
+///////////////////
+
+/*!
+@brief serialization to CBOR and MessagePack values
+*/
+template<typename BasicJsonType, typename CharType>
+class binary_writer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+  public:
+    /*!
+    @brief create a binary writer
+
+    @param[in] adapter  output adapter to write to
+    */
+    explicit binary_writer(output_adapter_t<CharType> adapter) : oa(std::move(adapter))
+    {
+        JSON_ASSERT(oa);
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @pre       j.type() == value_t::object
+    */
+    void write_bson(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+            {
+                write_bson_object(*j.m_data.m_value.object);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::array:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                JSON_THROW(type_error::create(317, concat("to serialize to BSON, top-level type must be object, but is ", j.type_name()), &j));
+            }
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_cbor(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                oa->write_character(to_char_type(0xF6));
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                oa->write_character(j.m_data.m_value.boolean
+                                    ? to_char_type(0xF5)
+                                    : to_char_type(0xF4));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_data.m_value.number_integer >= 0)
+                {
+                    // CBOR does not differentiate between positive signed
+                    // integers and unsigned integers. Therefore, we used the
+                    // code from the value_t::number_unsigned case here.
+                    if (j.m_data.m_value.number_integer <= 0x17)
+                    {
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x18));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x19));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x1A));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x1B));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    // The conversions below encode the sign in the first
+                    // byte, and the value is converted to a positive number.
+                    const auto positive_number = -1 - j.m_data.m_value.number_integer;
+                    if (j.m_data.m_value.number_integer >= -24)
+                    {
+                        write_number(static_cast<std::uint8_t>(0x20 + positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x38));
+                        write_number(static_cast<std::uint8_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x39));
+                        write_number(static_cast<std::uint16_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x3A));
+                        write_number(static_cast<std::uint32_t>(positive_number));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x3B));
+                        write_number(static_cast<std::uint64_t>(positive_number));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x18));
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x19));
+                    write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x1A));
+                    write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_unsigned));
+                }
+                else
+                {
+                    oa->write_character(to_char_type(0x1B));
+                    write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_unsigned));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                if (std::isnan(j.m_data.m_value.number_float))
+                {
+                    // NaN is 0xf97e00 in CBOR
+                    oa->write_character(to_char_type(0xF9));
+                    oa->write_character(to_char_type(0x7E));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else if (std::isinf(j.m_data.m_value.number_float))
+                {
+                    // Infinity is 0xf97c00, -Infinity is 0xf9fc00
+                    oa->write_character(to_char_type(0xf9));
+                    oa->write_character(j.m_data.m_value.number_float > 0 ? to_char_type(0x7C) : to_char_type(0xFC));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else
+                {
+                    write_compact_float(j.m_data.m_value.number_float, detail::input_format_t::cbor);
+                }
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_data.m_value.string->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x60 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x78));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x79));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_data.m_value.array->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x80 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x98));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x99));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_cbor(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (j.m_data.m_value.binary->has_subtype())
+                {
+                    if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xd8));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xd9));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xda));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xdb));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                }
+
+                // step 1: write control byte and the binary array size
+                const auto N = j.m_data.m_value.binary->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x40 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x58));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x59));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_data.m_value.object->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0xA0 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB8));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB9));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBA));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBB));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_cbor(el.first);
+                    write_cbor(el.second);
+                }
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_msgpack(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null: // nil
+            {
+                oa->write_character(to_char_type(0xC0));
+                break;
+            }
+
+            case value_t::boolean: // true and false
+            {
+                oa->write_character(j.m_data.m_value.boolean
+                                    ? to_char_type(0xC3)
+                                    : to_char_type(0xC2));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_data.m_value.number_integer >= 0)
+                {
+                    // MessagePack does not differentiate between positive
+                    // signed integers and unsigned integers. Therefore, we used
+                    // the code from the value_t::number_unsigned case here.
+                    if (j.m_data.m_value.number_unsigned < 128)
+                    {
+                        // positive fixnum
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        // uint 8
+                        oa->write_character(to_char_type(0xCC));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        // uint 16
+                        oa->write_character(to_char_type(0xCD));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        // uint 32
+                        oa->write_character(to_char_type(0xCE));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        // uint 64
+                        oa->write_character(to_char_type(0xCF));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    if (j.m_data.m_value.number_integer >= -32)
+                    {
+                        // negative fixnum
+                        write_number(static_cast<std::int8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int8_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                    {
+                        // int 8
+                        oa->write_character(to_char_type(0xD0));
+                        write_number(static_cast<std::int8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int16_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                    {
+                        // int 16
+                        oa->write_character(to_char_type(0xD1));
+                        write_number(static_cast<std::int16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int32_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                    {
+                        // int 32
+                        oa->write_character(to_char_type(0xD2));
+                        write_number(static_cast<std::int32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int64_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                    {
+                        // int 64
+                        oa->write_character(to_char_type(0xD3));
+                        write_number(static_cast<std::int64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned < 128)
+                {
+                    // positive fixnum
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // uint 8
+                    oa->write_character(to_char_type(0xCC));
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // uint 16
+                    oa->write_character(to_char_type(0xCD));
+                    write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // uint 32
+                    oa->write_character(to_char_type(0xCE));
+                    write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    // uint 64
+                    oa->write_character(to_char_type(0xCF));
+                    write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_compact_float(j.m_data.m_value.number_float, detail::input_format_t::msgpack);
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_data.m_value.string->size();
+                if (N <= 31)
+                {
+                    // fixstr
+                    write_number(static_cast<std::uint8_t>(0xA0 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // str 8
+                    oa->write_character(to_char_type(0xD9));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // str 16
+                    oa->write_character(to_char_type(0xDA));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // str 32
+                    oa->write_character(to_char_type(0xDB));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_data.m_value.array->size();
+                if (N <= 15)
+                {
+                    // fixarray
+                    write_number(static_cast<std::uint8_t>(0x90 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // array 16
+                    oa->write_character(to_char_type(0xDC));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // array 32
+                    oa->write_character(to_char_type(0xDD));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_msgpack(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                // step 0: determine if the binary type has a set subtype to
+                // determine whether to use the ext or fixext types
+                const bool use_ext = j.m_data.m_value.binary->has_subtype();
+
+                // step 1: write control byte and the byte string length
+                const auto N = j.m_data.m_value.binary->size();
+                if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    std::uint8_t output_type{};
+                    bool fixed = true;
+                    if (use_ext)
+                    {
+                        switch (N)
+                        {
+                            case 1:
+                                output_type = 0xD4; // fixext 1
+                                break;
+                            case 2:
+                                output_type = 0xD5; // fixext 2
+                                break;
+                            case 4:
+                                output_type = 0xD6; // fixext 4
+                                break;
+                            case 8:
+                                output_type = 0xD7; // fixext 8
+                                break;
+                            case 16:
+                                output_type = 0xD8; // fixext 16
+                                break;
+                            default:
+                                output_type = 0xC7; // ext 8
+                                fixed = false;
+                                break;
+                        }
+
+                    }
+                    else
+                    {
+                        output_type = 0xC4; // bin 8
+                        fixed = false;
+                    }
+
+                    oa->write_character(to_char_type(output_type));
+                    if (!fixed)
+                    {
+                        write_number(static_cast<std::uint8_t>(N));
+                    }
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    const std::uint8_t output_type = use_ext
+                                                     ? 0xC8 // ext 16
+                                                     : 0xC5; // bin 16
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    const std::uint8_t output_type = use_ext
+                                                     ? 0xC9 // ext 32
+                                                     : 0xC6; // bin 32
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 1.5: if this is an ext type, write the subtype
+                if (use_ext)
+                {
+                    write_number(static_cast<std::int8_t>(j.m_data.m_value.binary->subtype()));
+                }
+
+                // step 2: write the byte string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_data.m_value.object->size();
+                if (N <= 15)
+                {
+                    // fixmap
+                    write_number(static_cast<std::uint8_t>(0x80 | (N & 0xF)));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // map 16
+                    oa->write_character(to_char_type(0xDE));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // map 32
+                    oa->write_character(to_char_type(0xDF));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_msgpack(el.first);
+                    write_msgpack(el.second);
+                }
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @param[in] use_count   whether to use '#' prefixes (optimized format)
+    @param[in] use_type    whether to use '$' prefixes (optimized format)
+    @param[in] add_prefix  whether prefixes need to be used for this value
+    @param[in] use_bjdata  whether write in BJData format, default is false
+    */
+    void write_ubjson(const BasicJsonType& j, const bool use_count,
+                      const bool use_type, const bool add_prefix = true,
+                      const bool use_bjdata = false)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('Z'));
+                }
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(j.m_data.m_value.boolean
+                                        ? to_char_type('T')
+                                        : to_char_type('F'));
+                }
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_integer, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_unsigned, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_float, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::string:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('S'));
+                }
+                write_number_with_ubjson_prefix(j.m_data.m_value.string->size(), true, use_bjdata);
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_data.m_value.array->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
+                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(),
+                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v, use_bjdata) == first_prefix;
+                    });
+
+                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
+
+                    if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.array->size(), true, use_bjdata);
+                }
+
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_ubjson(el, use_count, use_type, prefix_required, use_bjdata);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                if (use_type && !j.m_data.m_value.binary->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    oa->write_character(to_char_type('$'));
+                    oa->write_character('U');
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.binary->size(), true, use_bjdata);
+                }
+
+                if (use_type)
+                {
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                        j.m_data.m_value.binary->size());
+                }
+                else
+                {
+                    for (size_t i = 0; i < j.m_data.m_value.binary->size(); ++i)
+                    {
+                        oa->write_character(to_char_type('U'));
+                        oa->write_character(j.m_data.m_value.binary->data()[i]);
+                    }
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                if (use_bjdata && j.m_data.m_value.object->size() == 3 && j.m_data.m_value.object->find("_ArrayType_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArraySize_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArrayData_") != j.m_data.m_value.object->end())
+                {
+                    if (!write_bjdata_ndarray(*j.m_data.m_value.object, use_count, use_type))  // decode bjdata ndarray in the JData format (https://github.com/NeuroJSON/jdata)
+                    {
+                        break;
+                    }
+                }
+
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('{'));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_data.m_value.object->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
+                    const bool same_prefix = std::all_of(j.begin(), j.end(),
+                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v, use_bjdata) == first_prefix;
+                    });
+
+                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
+
+                    if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.object->size(), true, use_bjdata);
+                }
+
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_number_with_ubjson_prefix(el.first.size(), true, use_bjdata);
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(el.first.c_str()),
+                        el.first.size());
+                    write_ubjson(el.second, use_count, use_type, prefix_required, use_bjdata);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type('}'));
+                }
+
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @return The size of a BSON document entry header, including the id marker
+            and the entry name size (and its null-terminator).
+    */
+    static std::size_t calc_bson_entry_header_size(const string_t& name, const BasicJsonType& j)
+    {
+        const auto it = name.find(static_cast<typename string_t::value_type>(0));
+        if (JSON_HEDLEY_UNLIKELY(it != BasicJsonType::string_t::npos))
+        {
+            JSON_THROW(out_of_range::create(409, concat("BSON key cannot contain code point U+0000 (at byte ", std::to_string(it), ")"), &j));
+            static_cast<void>(j);
+        }
+
+        return /*id*/ 1ul + name.size() + /*zero-terminator*/1u;
+    }
+
+    /*!
+    @brief Writes the given @a element_type and @a name to the output adapter
+    */
+    void write_bson_entry_header(const string_t& name,
+                                 const std::uint8_t element_type)
+    {
+        oa->write_character(to_char_type(element_type)); // boolean
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(name.c_str()),
+            name.size() + 1u);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and boolean value @a value
+    */
+    void write_bson_boolean(const string_t& name,
+                            const bool value)
+    {
+        write_bson_entry_header(name, 0x08);
+        oa->write_character(value ? to_char_type(0x01) : to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and double value @a value
+    */
+    void write_bson_double(const string_t& name,
+                           const double value)
+    {
+        write_bson_entry_header(name, 0x01);
+        write_number<double>(value, true);
+    }
+
+    /*!
+    @return The size of the BSON-encoded string in @a value
+    */
+    static std::size_t calc_bson_string_size(const string_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and string value @a value
+    */
+    void write_bson_string(const string_t& name,
+                           const string_t& value)
+    {
+        write_bson_entry_header(name, 0x02);
+
+        write_number<std::int32_t>(static_cast<std::int32_t>(value.size() + 1ul), true);
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(value.c_str()),
+            value.size() + 1);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and null value
+    */
+    void write_bson_null(const string_t& name)
+    {
+        write_bson_entry_header(name, 0x0A);
+    }
+
+    /*!
+    @return The size of the BSON-encoded integer @a value
+    */
+    static std::size_t calc_bson_integer_size(const std::int64_t value)
+    {
+        return (std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)()
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and integer @a value
+    */
+    void write_bson_integer(const string_t& name,
+                            const std::int64_t value)
+    {
+        if ((std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            write_bson_entry_header(name, 0x10); // int32
+            write_number<std::int32_t>(static_cast<std::int32_t>(value), true);
+        }
+        else
+        {
+            write_bson_entry_header(name, 0x12); // int64
+            write_number<std::int64_t>(static_cast<std::int64_t>(value), true);
+        }
+    }
+
+    /*!
+    @return The size of the BSON-encoded unsigned integer in @a j
+    */
+    static constexpr std::size_t calc_bson_unsigned_size(const std::uint64_t value) noexcept
+    {
+        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and unsigned @a value
+    */
+    void write_bson_unsigned(const string_t& name,
+                             const BasicJsonType& j)
+    {
+        if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x10 /* int32 */);
+            write_number<std::int32_t>(static_cast<std::int32_t>(j.m_data.m_value.number_unsigned), true);
+        }
+        else if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x12 /* int64 */);
+            write_number<std::int64_t>(static_cast<std::int64_t>(j.m_data.m_value.number_unsigned), true);
+        }
+        else
+        {
+            JSON_THROW(out_of_range::create(407, concat("integer number ", std::to_string(j.m_data.m_value.number_unsigned), " cannot be represented by BSON as it does not fit int64"), &j));
+        }
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and object @a value
+    */
+    void write_bson_object_entry(const string_t& name,
+                                 const typename BasicJsonType::object_t& value)
+    {
+        write_bson_entry_header(name, 0x03); // object
+        write_bson_object(value);
+    }
+
+    /*!
+    @return The size of the BSON-encoded array @a value
+    */
+    static std::size_t calc_bson_array_size(const typename BasicJsonType::array_t& value)
+    {
+        std::size_t array_index = 0ul;
+
+        const std::size_t embedded_document_size = std::accumulate(std::begin(value), std::end(value), static_cast<std::size_t>(0), [&array_index](std::size_t result, const typename BasicJsonType::array_t::value_type & el)
+        {
+            return result + calc_bson_element_size(std::to_string(array_index++), el);
+        });
+
+        return sizeof(std::int32_t) + embedded_document_size + 1ul;
+    }
+
+    /*!
+    @return The size of the BSON-encoded binary array @a value
+    */
+    static std::size_t calc_bson_binary_size(const typename BasicJsonType::binary_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and array @a value
+    */
+    void write_bson_array(const string_t& name,
+                          const typename BasicJsonType::array_t& value)
+    {
+        write_bson_entry_header(name, 0x04); // array
+        write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_array_size(value)), true);
+
+        std::size_t array_index = 0ul;
+
+        for (const auto& el : value)
+        {
+            write_bson_element(std::to_string(array_index++), el);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and binary value @a value
+    */
+    void write_bson_binary(const string_t& name,
+                           const binary_t& value)
+    {
+        write_bson_entry_header(name, 0x05);
+
+        write_number<std::int32_t>(static_cast<std::int32_t>(value.size()), true);
+        write_number(value.has_subtype() ? static_cast<std::uint8_t>(value.subtype()) : static_cast<std::uint8_t>(0x00));
+
+        oa->write_characters(reinterpret_cast<const CharType*>(value.data()), value.size());
+    }
+
+    /*!
+    @brief Calculates the size necessary to serialize the JSON value @a j with its @a name
+    @return The calculated size for the BSON document entry for @a j with the given @a name.
+    */
+    static std::size_t calc_bson_element_size(const string_t& name,
+            const BasicJsonType& j)
+    {
+        const auto header_size = calc_bson_entry_header_size(name, j);
+        switch (j.type())
+        {
+            case value_t::object:
+                return header_size + calc_bson_object_size(*j.m_data.m_value.object);
+
+            case value_t::array:
+                return header_size + calc_bson_array_size(*j.m_data.m_value.array);
+
+            case value_t::binary:
+                return header_size + calc_bson_binary_size(*j.m_data.m_value.binary);
+
+            case value_t::boolean:
+                return header_size + 1ul;
+
+            case value_t::number_float:
+                return header_size + 8ul;
+
+            case value_t::number_integer:
+                return header_size + calc_bson_integer_size(j.m_data.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return header_size + calc_bson_unsigned_size(j.m_data.m_value.number_unsigned);
+
+            case value_t::string:
+                return header_size + calc_bson_string_size(*j.m_data.m_value.string);
+
+            case value_t::null:
+                return header_size + 0ul;
+
+            // LCOV_EXCL_START
+            case value_t::discarded:
+            default:
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
+                return 0ul;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Serializes the JSON value @a j to BSON and associates it with the
+           key @a name.
+    @param name The name to associate with the JSON entity @a j within the
+                current BSON document
+    */
+    void write_bson_element(const string_t& name,
+                            const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+                return write_bson_object_entry(name, *j.m_data.m_value.object);
+
+            case value_t::array:
+                return write_bson_array(name, *j.m_data.m_value.array);
+
+            case value_t::binary:
+                return write_bson_binary(name, *j.m_data.m_value.binary);
+
+            case value_t::boolean:
+                return write_bson_boolean(name, j.m_data.m_value.boolean);
+
+            case value_t::number_float:
+                return write_bson_double(name, j.m_data.m_value.number_float);
+
+            case value_t::number_integer:
+                return write_bson_integer(name, j.m_data.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return write_bson_unsigned(name, j);
+
+            case value_t::string:
+                return write_bson_string(name, *j.m_data.m_value.string);
+
+            case value_t::null:
+                return write_bson_null(name);
+
+            // LCOV_EXCL_START
+            case value_t::discarded:
+            default:
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
+                return;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Calculates the size of the BSON serialization of the given
+           JSON-object @a j.
+    @param[in] value  JSON value to serialize
+    @pre       value.type() == value_t::object
+    */
+    static std::size_t calc_bson_object_size(const typename BasicJsonType::object_t& value)
+    {
+        const std::size_t document_size = std::accumulate(value.begin(), value.end(), static_cast<std::size_t>(0),
+                                          [](size_t result, const typename BasicJsonType::object_t::value_type & el)
+        {
+            return result += calc_bson_element_size(el.first, el.second);
+        });
+
+        return sizeof(std::int32_t) + document_size + 1ul;
+    }
+
+    /*!
+    @param[in] value  JSON value to serialize
+    @pre       value.type() == value_t::object
+    */
+    void write_bson_object(const typename BasicJsonType::object_t& value)
+    {
+        write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_object_size(value)), true);
+
+        for (const auto& el : value)
+        {
+            write_bson_element(el.first, el.second);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    static constexpr CharType get_cbor_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xFA);  // Single-Precision Float
+    }
+
+    static constexpr CharType get_cbor_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xFB);  // Double-Precision Float
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    static constexpr CharType get_msgpack_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xCA);  // float 32
+    }
+
+    static constexpr CharType get_msgpack_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xCB);  // float 64
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    // UBJSON: write number (floating point)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_floating_point<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if (add_prefix)
+        {
+            oa->write_character(get_ubjson_float_prefix(n));
+        }
+        write_number(n, use_bjdata);
+    }
+
+    // UBJSON: write number (unsigned integer)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_unsigned<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if (n <= (std::numeric_limits<std::uint8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= static_cast<uint64_t>((std::numeric_limits<uint16_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('u'));  // uint16 - bjdata only
+            }
+            write_number(static_cast<std::uint16_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= static_cast<uint64_t>((std::numeric_limits<uint32_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('m'));  // uint32 - bjdata only
+            }
+            write_number(static_cast<std::uint32_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= (std::numeric_limits<uint64_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('M'));  // uint64 - bjdata only
+            }
+            write_number(static_cast<std::uint64_t>(n), use_bjdata);
+        }
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true, use_bjdata);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+    }
+
+    // UBJSON: write number (signed integer)
+    template < typename NumberType, typename std::enable_if <
+                   std::is_signed<NumberType>::value&&
+                   !std::is_floating_point<NumberType>::value, int >::type = 0 >
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if ((std::numeric_limits<std::int8_t>::min)() <= n && n <= (std::numeric_limits<std::int8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::int8_t>(n), use_bjdata);
+        }
+        else if (static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int16_t>::min)() <= n && n <= (std::numeric_limits<std::int16_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::max)())))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('u'));  // uint16 - bjdata only
+            }
+            write_number(static_cast<uint16_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int32_t>::min)() <= n && n <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::max)())))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('m'));  // uint32 - bjdata only
+            }
+            write_number(static_cast<uint32_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int64_t>::min)() <= n && n <= (std::numeric_limits<std::int64_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n), use_bjdata);
+        }
+        // LCOV_EXCL_START
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true, use_bjdata);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+        // LCOV_EXCL_STOP
+    }
+
+    /*!
+    @brief determine the type prefix of container values
+    */
+    CharType ubjson_prefix(const BasicJsonType& j, const bool use_bjdata) const noexcept
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+                return 'Z';
+
+            case value_t::boolean:
+                return j.m_data.m_value.boolean ? 'T' : 'F';
+
+            case value_t::number_integer:
+            {
+                if ((std::numeric_limits<std::int8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                {
+                    return 'i';
+                }
+                if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    return 'U';
+                }
+                if ((std::numeric_limits<std::int16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                {
+                    return 'I';
+                }
+                if (use_bjdata && ((std::numeric_limits<std::uint16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)()))
+                {
+                    return 'u';
+                }
+                if ((std::numeric_limits<std::int32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                {
+                    return 'l';
+                }
+                if (use_bjdata && ((std::numeric_limits<std::uint32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)()))
+                {
+                    return 'm';
+                }
+                if ((std::numeric_limits<std::int64_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                {
+                    return 'L';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+                {
+                    return 'i';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint8_t>::max)()))
+                {
+                    return 'U';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+                {
+                    return 'I';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint16_t>::max)()))
+                {
+                    return 'u';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+                {
+                    return 'l';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint32_t>::max)()))
+                {
+                    return 'm';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+                {
+                    return 'L';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    return 'M';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_float:
+                return get_ubjson_float_prefix(j.m_data.m_value.number_float);
+
+            case value_t::string:
+                return 'S';
+
+            case value_t::array: // fallthrough
+            case value_t::binary:
+                return '[';
+
+            case value_t::object:
+                return '{';
+
+            case value_t::discarded:
+            default:  // discarded values
+                return 'N';
+        }
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(float /*unused*/)
+    {
+        return 'd';  // float 32
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(double /*unused*/)
+    {
+        return 'D';  // float 64
+    }
+
+    /*!
+    @return false if the object is successfully converted to a bjdata ndarray, true if the type or size is invalid
+    */
+    bool write_bjdata_ndarray(const typename BasicJsonType::object_t& value, const bool use_count, const bool use_type)
+    {
+        std::map<string_t, CharType> bjdtype = {{"uint8", 'U'},  {"int8", 'i'},  {"uint16", 'u'}, {"int16", 'I'},
+            {"uint32", 'm'}, {"int32", 'l'}, {"uint64", 'M'}, {"int64", 'L'}, {"single", 'd'}, {"double", 'D'}, {"char", 'C'}
+        };
+
+        string_t key = "_ArrayType_";
+        auto it = bjdtype.find(static_cast<string_t>(value.at(key)));
+        if (it == bjdtype.end())
+        {
+            return true;
+        }
+        CharType dtype = it->second;
+
+        key = "_ArraySize_";
+        std::size_t len = (value.at(key).empty() ? 0 : 1);
+        for (const auto& el : value.at(key))
+        {
+            len *= static_cast<std::size_t>(el.m_data.m_value.number_unsigned);
+        }
+
+        key = "_ArrayData_";
+        if (value.at(key).size() != len)
+        {
+            return true;
+        }
+
+        oa->write_character('[');
+        oa->write_character('$');
+        oa->write_character(dtype);
+        oa->write_character('#');
+
+        key = "_ArraySize_";
+        write_ubjson(value.at(key), use_count, use_type, true,  true);
+
+        key = "_ArrayData_";
+        if (dtype == 'U' || dtype == 'C')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint8_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'i')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int8_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'u')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint16_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'I')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int16_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'm')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint32_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'l')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int32_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'M')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint64_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'L')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int64_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'd')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<float>(el.m_data.m_value.number_float), true);
+            }
+        }
+        else if (dtype == 'D')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<double>(el.m_data.m_value.number_float), true);
+            }
+        }
+        return false;
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*
+    @brief write a number to output input
+    @param[in] n number of type @a NumberType
+    @param[in] OutputIsLittleEndian Set to true if output data is
+                                 required to be little endian
+    @tparam NumberType the type of the number
+
+    @note This function needs to respect the system's endianness, because bytes
+          in CBOR, MessagePack, and UBJSON are stored in network order (big
+          endian) and therefore need reordering on little endian systems.
+          On the other hand, BSON and BJData use little endian and should reorder
+          on big endian systems.
+    */
+    template<typename NumberType>
+    void write_number(const NumberType n, const bool OutputIsLittleEndian = false)
+    {
+        // step 1: write number to array of length NumberType
+        std::array<CharType, sizeof(NumberType)> vec{};
+        std::memcpy(vec.data(), &n, sizeof(NumberType));
+
+        // step 2: write array to output (with possible reordering)
+        if (is_little_endian != OutputIsLittleEndian)
+        {
+            // reverse byte order prior to conversion if necessary
+            std::reverse(vec.begin(), vec.end());
+        }
+
+        oa->write_characters(vec.data(), sizeof(NumberType));
+    }
+
+    void write_compact_float(const number_float_t n, detail::input_format_t format)
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        if (static_cast<double>(n) >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
+                static_cast<double>(n) <= static_cast<double>((std::numeric_limits<float>::max)()) &&
+                static_cast<double>(static_cast<float>(n)) == static_cast<double>(n))
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(static_cast<float>(n))
+                                : get_msgpack_float_prefix(static_cast<float>(n)));
+            write_number(static_cast<float>(n));
+        }
+        else
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(n)
+                                : get_msgpack_float_prefix(n));
+            write_number(n);
+        }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+  public:
+    // The following to_char_type functions are implement the conversion
+    // between uint8_t and CharType. In case CharType is not unsigned,
+    // such a conversion is required to allow values greater than 128.
+    // See <https://github.com/nlohmann/json/issues/1286> for a discussion.
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_signed<char>::value > * = nullptr >
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return *reinterpret_cast<char*>(&x);
+    }
+
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_unsigned<char>::value > * = nullptr >
+    static CharType to_char_type(std::uint8_t x) noexcept
+    {
+        static_assert(sizeof(std::uint8_t) == sizeof(CharType), "size of CharType must be equal to std::uint8_t");
+        static_assert(std::is_trivial<CharType>::value, "CharType must be trivial");
+        CharType result;
+        std::memcpy(&result, &x, sizeof(x));
+        return result;
+    }
+
+    template<typename C = CharType,
+             enable_if_t<std::is_unsigned<C>::value>* = nullptr>
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return x;
+    }
+
+    template < typename InputCharType, typename C = CharType,
+               enable_if_t <
+                   std::is_signed<C>::value &&
+                   std::is_signed<char>::value &&
+                   std::is_same<char, typename std::remove_cv<InputCharType>::type>::value
+                   > * = nullptr >
+    static constexpr CharType to_char_type(InputCharType x) noexcept
+    {
+        return x;
+    }
+
+  private:
+    /// whether we can assume little endianness
+    const bool is_little_endian = little_endianness();
+
+    /// the output
+    output_adapter_t<CharType> oa = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/output_adapters.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/output_adapters.hpp
new file mode 100644
index 00000000..72cd7d36
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/output_adapters.hpp
@@ -0,0 +1,147 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <algorithm> // copy
+#include <cstddef> // size_t
+#include <iterator> // back_inserter
+#include <memory> // shared_ptr, make_shared
+#include <string> // basic_string
+#include <vector> // vector
+
+#ifndef JSON_NO_IO
+    #include <ios>      // streamsize
+    #include <ostream>  // basic_ostream
+#endif  // JSON_NO_IO
+
+#include <nlohmann/detail/macro_scope.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// abstract output adapter interface
+template<typename CharType> struct output_adapter_protocol
+{
+    virtual void write_character(CharType c) = 0;
+    virtual void write_characters(const CharType* s, std::size_t length) = 0;
+    virtual ~output_adapter_protocol() = default;
+
+    output_adapter_protocol() = default;
+    output_adapter_protocol(const output_adapter_protocol&) = default;
+    output_adapter_protocol(output_adapter_protocol&&) noexcept = default;
+    output_adapter_protocol& operator=(const output_adapter_protocol&) = default;
+    output_adapter_protocol& operator=(output_adapter_protocol&&) noexcept = default;
+};
+
+/// a type to simplify interfaces
+template<typename CharType>
+using output_adapter_t = std::shared_ptr<output_adapter_protocol<CharType>>;
+
+/// output adapter for byte vectors
+template<typename CharType, typename AllocatorType = std::allocator<CharType>>
+class output_vector_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_vector_adapter(std::vector<CharType, AllocatorType>& vec) noexcept
+        : v(vec)
+    {}
+
+    void write_character(CharType c) override
+    {
+        v.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        v.insert(v.end(), s, s + length);
+    }
+
+  private:
+    std::vector<CharType, AllocatorType>& v;
+};
+
+#ifndef JSON_NO_IO
+/// output adapter for output streams
+template<typename CharType>
+class output_stream_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_stream_adapter(std::basic_ostream<CharType>& s) noexcept
+        : stream(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        stream.put(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        stream.write(s, static_cast<std::streamsize>(length));
+    }
+
+  private:
+    std::basic_ostream<CharType>& stream;
+};
+#endif  // JSON_NO_IO
+
+/// output adapter for basic_string
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_string_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_string_adapter(StringType& s) noexcept
+        : str(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        str.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        str.append(s, length);
+    }
+
+  private:
+    StringType& str;
+};
+
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_adapter
+{
+  public:
+    template<typename AllocatorType = std::allocator<CharType>>
+    output_adapter(std::vector<CharType, AllocatorType>& vec)
+        : oa(std::make_shared<output_vector_adapter<CharType, AllocatorType>>(vec)) {}
+
+#ifndef JSON_NO_IO
+    output_adapter(std::basic_ostream<CharType>& s)
+        : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
+#endif  // JSON_NO_IO
+
+    output_adapter(StringType& s)
+        : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {}
+
+    operator output_adapter_t<CharType>()
+    {
+        return oa;
+    }
+
+  private:
+    output_adapter_t<CharType> oa = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/serializer.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/serializer.hpp
new file mode 100644
index 00000000..b42a3104
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/output/serializer.hpp
@@ -0,0 +1,988 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2008 - 2009 Björn Hoehrmann <bjoern@hoehrmann.de>
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <algorithm> // reverse, remove, fill, find, none_of
+#include <array> // array
+#include <clocale> // localeconv, lconv
+#include <cmath> // labs, isfinite, isnan, signbit
+#include <cstddef> // size_t, ptrdiff_t
+#include <cstdint> // uint8_t
+#include <cstdio> // snprintf
+#include <limits> // numeric_limits
+#include <string> // string, char_traits
+#include <iomanip> // setfill, setw
+#include <type_traits> // is_same
+#include <utility> // move
+
+#include <nlohmann/detail/conversions/to_chars.hpp>
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/output/binary_writer.hpp>
+#include <nlohmann/detail/output/output_adapters.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+#include <nlohmann/detail/value_t.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////
+// serialization //
+///////////////////
+
+/// how to treat decoding errors
+enum class error_handler_t
+{
+    strict,  ///< throw a type_error exception in case of invalid UTF-8
+    replace, ///< replace invalid UTF-8 sequences with U+FFFD
+    ignore   ///< ignore invalid UTF-8 sequences
+};
+
+template<typename BasicJsonType>
+class serializer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using binary_char_t = typename BasicJsonType::binary_t::value_type;
+    static constexpr std::uint8_t UTF8_ACCEPT = 0;
+    static constexpr std::uint8_t UTF8_REJECT = 1;
+
+  public:
+    /*!
+    @param[in] s  output stream to serialize to
+    @param[in] ichar  indentation character to use
+    @param[in] error_handler_  how to react on decoding errors
+    */
+    serializer(output_adapter_t<char> s, const char ichar,
+               error_handler_t error_handler_ = error_handler_t::strict)
+        : o(std::move(s))
+        , loc(std::localeconv())
+        , thousands_sep(loc->thousands_sep == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->thousands_sep)))
+        , decimal_point(loc->decimal_point == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->decimal_point)))
+        , indent_char(ichar)
+        , indent_string(512, indent_char)
+        , error_handler(error_handler_)
+    {}
+
+    // delete because of pointer members
+    serializer(const serializer&) = delete;
+    serializer& operator=(const serializer&) = delete;
+    serializer(serializer&&) = delete;
+    serializer& operator=(serializer&&) = delete;
+    ~serializer() = default;
+
+    /*!
+    @brief internal implementation of the serialization function
+
+    This function is called by the public member function dump and organizes
+    the serialization internally. The indentation level is propagated as
+    additional parameter. In case of arrays and objects, the function is
+    called recursively.
+
+    - strings and object keys are escaped using `escape_string()`
+    - integer numbers are converted implicitly via `operator<<`
+    - floating-point numbers are converted to a string using `"%g"` format
+    - binary values are serialized as objects containing the subtype and the
+      byte array
+
+    @param[in] val               value to serialize
+    @param[in] pretty_print      whether the output shall be pretty-printed
+    @param[in] ensure_ascii If @a ensure_ascii is true, all non-ASCII characters
+    in the output are escaped with `\uXXXX` sequences, and the result consists
+    of ASCII characters only.
+    @param[in] indent_step       the indent level
+    @param[in] current_indent    the current indent level (only used internally)
+    */
+    void dump(const BasicJsonType& val,
+              const bool pretty_print,
+              const bool ensure_ascii,
+              const unsigned int indent_step,
+              const unsigned int current_indent = 0)
+    {
+        switch (val.m_data.m_type)
+        {
+            case value_t::object:
+            {
+                if (val.m_data.m_value.object->empty())
+                {
+                    o->write_characters("{}", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    auto i = val.m_data.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_data.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\": ", 3);
+                        dump(i->second, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_data.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_data.m_value.object->cend());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\": ", 3);
+                    dump(i->second, true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_character('{');
+
+                    // first n-1 elements
+                    auto i = val.m_data.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_data.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\":", 2);
+                        dump(i->second, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_data.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_data.m_value.object->cend());
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\":", 2);
+                    dump(i->second, false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character('}');
+                }
+
+                return;
+            }
+
+            case value_t::array:
+            {
+                if (val.m_data.m_value.array->empty())
+                {
+                    o->write_characters("[]", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("[\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    for (auto i = val.m_data.m_value.array->cbegin();
+                            i != val.m_data.m_value.array->cend() - 1; ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        dump(*i, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_data.m_value.array->empty());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    dump(val.m_data.m_value.array->back(), true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character(']');
+                }
+                else
+                {
+                    o->write_character('[');
+
+                    // first n-1 elements
+                    for (auto i = val.m_data.m_value.array->cbegin();
+                            i != val.m_data.m_value.array->cend() - 1; ++i)
+                    {
+                        dump(*i, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_data.m_value.array->empty());
+                    dump(val.m_data.m_value.array->back(), false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character(']');
+                }
+
+                return;
+            }
+
+            case value_t::string:
+            {
+                o->write_character('\"');
+                dump_escaped(*val.m_data.m_value.string, ensure_ascii);
+                o->write_character('\"');
+                return;
+            }
+
+            case value_t::binary:
+            {
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"bytes\": [", 10);
+
+                    if (!val.m_data.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_data.m_value.binary->cbegin();
+                                i != val.m_data.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_characters(", ", 2);
+                        }
+                        dump_integer(val.m_data.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\n", 3);
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"subtype\": ", 11);
+                    if (val.m_data.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_data.m_value.binary->subtype());
+                    }
+                    else
+                    {
+                        o->write_characters("null", 4);
+                    }
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_characters("{\"bytes\":[", 10);
+
+                    if (!val.m_data.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_data.m_value.binary->cbegin();
+                                i != val.m_data.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_character(',');
+                        }
+                        dump_integer(val.m_data.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\"subtype\":", 12);
+                    if (val.m_data.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_data.m_value.binary->subtype());
+                        o->write_character('}');
+                    }
+                    else
+                    {
+                        o->write_characters("null}", 5);
+                    }
+                }
+                return;
+            }
+
+            case value_t::boolean:
+            {
+                if (val.m_data.m_value.boolean)
+                {
+                    o->write_characters("true", 4);
+                }
+                else
+                {
+                    o->write_characters("false", 5);
+                }
+                return;
+            }
+
+            case value_t::number_integer:
+            {
+                dump_integer(val.m_data.m_value.number_integer);
+                return;
+            }
+
+            case value_t::number_unsigned:
+            {
+                dump_integer(val.m_data.m_value.number_unsigned);
+                return;
+            }
+
+            case value_t::number_float:
+            {
+                dump_float(val.m_data.m_value.number_float);
+                return;
+            }
+
+            case value_t::discarded:
+            {
+                o->write_characters("<discarded>", 11);
+                return;
+            }
+
+            case value_t::null:
+            {
+                o->write_characters("null", 4);
+                return;
+            }
+
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief dump escaped string
+
+    Escape a string by replacing certain special characters by a sequence of an
+    escape character (backslash) and another character and other control
+    characters by a sequence of "\u" followed by a four-digit hex
+    representation. The escaped string is written to output stream @a o.
+
+    @param[in] s  the string to escape
+    @param[in] ensure_ascii  whether to escape non-ASCII characters with
+                             \uXXXX sequences
+
+    @complexity Linear in the length of string @a s.
+    */
+    void dump_escaped(const string_t& s, const bool ensure_ascii)
+    {
+        std::uint32_t codepoint{};
+        std::uint8_t state = UTF8_ACCEPT;
+        std::size_t bytes = 0;  // number of bytes written to string_buffer
+
+        // number of bytes written at the point of the last valid byte
+        std::size_t bytes_after_last_accept = 0;
+        std::size_t undumped_chars = 0;
+
+        for (std::size_t i = 0; i < s.size(); ++i)
+        {
+            const auto byte = static_cast<std::uint8_t>(s[i]);
+
+            switch (decode(state, codepoint, byte))
+            {
+                case UTF8_ACCEPT:  // decode found a new code point
+                {
+                    switch (codepoint)
+                    {
+                        case 0x08: // backspace
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'b';
+                            break;
+                        }
+
+                        case 0x09: // horizontal tab
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 't';
+                            break;
+                        }
+
+                        case 0x0A: // newline
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'n';
+                            break;
+                        }
+
+                        case 0x0C: // formfeed
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'f';
+                            break;
+                        }
+
+                        case 0x0D: // carriage return
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'r';
+                            break;
+                        }
+
+                        case 0x22: // quotation mark
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\"';
+                            break;
+                        }
+
+                        case 0x5C: // reverse solidus
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\\';
+                            break;
+                        }
+
+                        default:
+                        {
+                            // escape control characters (0x00..0x1F) or, if
+                            // ensure_ascii parameter is used, non-ASCII characters
+                            if ((codepoint <= 0x1F) || (ensure_ascii && (codepoint >= 0x7F)))
+                            {
+                                if (codepoint <= 0xFFFF)
+                                {
+                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 7, "\\u%04x",
+                                                                      static_cast<std::uint16_t>(codepoint)));
+                                    bytes += 6;
+                                }
+                                else
+                                {
+                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 13, "\\u%04x\\u%04x",
+                                                                      static_cast<std::uint16_t>(0xD7C0u + (codepoint >> 10u)),
+                                                                      static_cast<std::uint16_t>(0xDC00u + (codepoint & 0x3FFu))));
+                                    bytes += 12;
+                                }
+                            }
+                            else
+                            {
+                                // copy byte to buffer (all previous bytes
+                                // been copied have in default case above)
+                                string_buffer[bytes++] = s[i];
+                            }
+                            break;
+                        }
+                    }
+
+                    // write buffer and reset index; there must be 13 bytes
+                    // left, as this is the maximal number of bytes to be
+                    // written ("\uxxxx\uxxxx\0") for one code point
+                    if (string_buffer.size() - bytes < 13)
+                    {
+                        o->write_characters(string_buffer.data(), bytes);
+                        bytes = 0;
+                    }
+
+                    // remember the byte position of this accept
+                    bytes_after_last_accept = bytes;
+                    undumped_chars = 0;
+                    break;
+                }
+
+                case UTF8_REJECT:  // decode found invalid UTF-8 byte
+                {
+                    switch (error_handler)
+                    {
+                        case error_handler_t::strict:
+                        {
+                            JSON_THROW(type_error::create(316, concat("invalid UTF-8 byte at index ", std::to_string(i), ": 0x", hex_bytes(byte | 0)), nullptr));
+                        }
+
+                        case error_handler_t::ignore:
+                        case error_handler_t::replace:
+                        {
+                            // in case we saw this character the first time, we
+                            // would like to read it again, because the byte
+                            // may be OK for itself, but just not OK for the
+                            // previous sequence
+                            if (undumped_chars > 0)
+                            {
+                                --i;
+                            }
+
+                            // reset length buffer to the last accepted index;
+                            // thus removing/ignoring the invalid characters
+                            bytes = bytes_after_last_accept;
+
+                            if (error_handler == error_handler_t::replace)
+                            {
+                                // add a replacement character
+                                if (ensure_ascii)
+                                {
+                                    string_buffer[bytes++] = '\\';
+                                    string_buffer[bytes++] = 'u';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'd';
+                                }
+                                else
+                                {
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xEF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBD');
+                                }
+
+                                // write buffer and reset index; there must be 13 bytes
+                                // left, as this is the maximal number of bytes to be
+                                // written ("\uxxxx\uxxxx\0") for one code point
+                                if (string_buffer.size() - bytes < 13)
+                                {
+                                    o->write_characters(string_buffer.data(), bytes);
+                                    bytes = 0;
+                                }
+
+                                bytes_after_last_accept = bytes;
+                            }
+
+                            undumped_chars = 0;
+
+                            // continue processing the string
+                            state = UTF8_ACCEPT;
+                            break;
+                        }
+
+                        default:            // LCOV_EXCL_LINE
+                            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+
+                default:  // decode found yet incomplete multi-byte code point
+                {
+                    if (!ensure_ascii)
+                    {
+                        // code point will not be escaped - copy byte to buffer
+                        string_buffer[bytes++] = s[i];
+                    }
+                    ++undumped_chars;
+                    break;
+                }
+            }
+        }
+
+        // we finished processing the string
+        if (JSON_HEDLEY_LIKELY(state == UTF8_ACCEPT))
+        {
+            // write buffer
+            if (bytes > 0)
+            {
+                o->write_characters(string_buffer.data(), bytes);
+            }
+        }
+        else
+        {
+            // we finish reading, but do not accept: string was incomplete
+            switch (error_handler)
+            {
+                case error_handler_t::strict:
+                {
+                    JSON_THROW(type_error::create(316, concat("incomplete UTF-8 string; last byte: 0x", hex_bytes(static_cast<std::uint8_t>(s.back() | 0))), nullptr));
+                }
+
+                case error_handler_t::ignore:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    break;
+                }
+
+                case error_handler_t::replace:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    // add a replacement character
+                    if (ensure_ascii)
+                    {
+                        o->write_characters("\\ufffd", 6);
+                    }
+                    else
+                    {
+                        o->write_characters("\xEF\xBF\xBD", 3);
+                    }
+                    break;
+                }
+
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            }
+        }
+    }
+
+  private:
+    /*!
+    @brief count digits
+
+    Count the number of decimal (base 10) digits for an input unsigned integer.
+
+    @param[in] x  unsigned integer number to count its digits
+    @return    number of decimal digits
+    */
+    unsigned int count_digits(number_unsigned_t x) noexcept
+    {
+        unsigned int n_digits = 1;
+        for (;;)
+        {
+            if (x < 10)
+            {
+                return n_digits;
+            }
+            if (x < 100)
+            {
+                return n_digits + 1;
+            }
+            if (x < 1000)
+            {
+                return n_digits + 2;
+            }
+            if (x < 10000)
+            {
+                return n_digits + 3;
+            }
+            x = x / 10000u;
+            n_digits += 4;
+        }
+    }
+
+    /*!
+     * @brief convert a byte to a uppercase hex representation
+     * @param[in] byte byte to represent
+     * @return representation ("00".."FF")
+     */
+    static std::string hex_bytes(std::uint8_t byte)
+    {
+        std::string result = "FF";
+        constexpr const char* nibble_to_hex = "0123456789ABCDEF";
+        result[0] = nibble_to_hex[byte / 16];
+        result[1] = nibble_to_hex[byte % 16];
+        return result;
+    }
+
+    // templates to avoid warnings about useless casts
+    template <typename NumberType, enable_if_t<std::is_signed<NumberType>::value, int> = 0>
+    bool is_negative_number(NumberType x)
+    {
+        return x < 0;
+    }
+
+    template < typename NumberType, enable_if_t <std::is_unsigned<NumberType>::value, int > = 0 >
+    bool is_negative_number(NumberType /*unused*/)
+    {
+        return false;
+    }
+
+    /*!
+    @brief dump an integer
+
+    Dump a given integer to output stream @a o. Works internally with
+    @a number_buffer.
+
+    @param[in] x  integer number (signed or unsigned) to dump
+    @tparam NumberType either @a number_integer_t or @a number_unsigned_t
+    */
+    template < typename NumberType, detail::enable_if_t <
+                   std::is_integral<NumberType>::value ||
+                   std::is_same<NumberType, number_unsigned_t>::value ||
+                   std::is_same<NumberType, number_integer_t>::value ||
+                   std::is_same<NumberType, binary_char_t>::value,
+                   int > = 0 >
+    void dump_integer(NumberType x)
+    {
+        static constexpr std::array<std::array<char, 2>, 100> digits_to_99
+        {
+            {
+                {{'0', '0'}}, {{'0', '1'}}, {{'0', '2'}}, {{'0', '3'}}, {{'0', '4'}}, {{'0', '5'}}, {{'0', '6'}}, {{'0', '7'}}, {{'0', '8'}}, {{'0', '9'}},
+                {{'1', '0'}}, {{'1', '1'}}, {{'1', '2'}}, {{'1', '3'}}, {{'1', '4'}}, {{'1', '5'}}, {{'1', '6'}}, {{'1', '7'}}, {{'1', '8'}}, {{'1', '9'}},
+                {{'2', '0'}}, {{'2', '1'}}, {{'2', '2'}}, {{'2', '3'}}, {{'2', '4'}}, {{'2', '5'}}, {{'2', '6'}}, {{'2', '7'}}, {{'2', '8'}}, {{'2', '9'}},
+                {{'3', '0'}}, {{'3', '1'}}, {{'3', '2'}}, {{'3', '3'}}, {{'3', '4'}}, {{'3', '5'}}, {{'3', '6'}}, {{'3', '7'}}, {{'3', '8'}}, {{'3', '9'}},
+                {{'4', '0'}}, {{'4', '1'}}, {{'4', '2'}}, {{'4', '3'}}, {{'4', '4'}}, {{'4', '5'}}, {{'4', '6'}}, {{'4', '7'}}, {{'4', '8'}}, {{'4', '9'}},
+                {{'5', '0'}}, {{'5', '1'}}, {{'5', '2'}}, {{'5', '3'}}, {{'5', '4'}}, {{'5', '5'}}, {{'5', '6'}}, {{'5', '7'}}, {{'5', '8'}}, {{'5', '9'}},
+                {{'6', '0'}}, {{'6', '1'}}, {{'6', '2'}}, {{'6', '3'}}, {{'6', '4'}}, {{'6', '5'}}, {{'6', '6'}}, {{'6', '7'}}, {{'6', '8'}}, {{'6', '9'}},
+                {{'7', '0'}}, {{'7', '1'}}, {{'7', '2'}}, {{'7', '3'}}, {{'7', '4'}}, {{'7', '5'}}, {{'7', '6'}}, {{'7', '7'}}, {{'7', '8'}}, {{'7', '9'}},
+                {{'8', '0'}}, {{'8', '1'}}, {{'8', '2'}}, {{'8', '3'}}, {{'8', '4'}}, {{'8', '5'}}, {{'8', '6'}}, {{'8', '7'}}, {{'8', '8'}}, {{'8', '9'}},
+                {{'9', '0'}}, {{'9', '1'}}, {{'9', '2'}}, {{'9', '3'}}, {{'9', '4'}}, {{'9', '5'}}, {{'9', '6'}}, {{'9', '7'}}, {{'9', '8'}}, {{'9', '9'}},
+            }
+        };
+
+        // special case for "0"
+        if (x == 0)
+        {
+            o->write_character('0');
+            return;
+        }
+
+        // use a pointer to fill the buffer
+        auto buffer_ptr = number_buffer.begin(); // NOLINT(llvm-qualified-auto,readability-qualified-auto,cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+
+        number_unsigned_t abs_value;
+
+        unsigned int n_chars{};
+
+        if (is_negative_number(x))
+        {
+            *buffer_ptr = '-';
+            abs_value = remove_sign(static_cast<number_integer_t>(x));
+
+            // account one more byte for the minus sign
+            n_chars = 1 + count_digits(abs_value);
+        }
+        else
+        {
+            abs_value = static_cast<number_unsigned_t>(x);
+            n_chars = count_digits(abs_value);
+        }
+
+        // spare 1 byte for '\0'
+        JSON_ASSERT(n_chars < number_buffer.size() - 1);
+
+        // jump to the end to generate the string from backward,
+        // so we later avoid reversing the result
+        buffer_ptr += n_chars;
+
+        // Fast int2ascii implementation inspired by "Fastware" talk by Andrei Alexandrescu
+        // See: https://www.youtube.com/watch?v=o4-CwDo2zpg
+        while (abs_value >= 100)
+        {
+            const auto digits_index = static_cast<unsigned>((abs_value % 100));
+            abs_value /= 100;
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+
+        if (abs_value >= 10)
+        {
+            const auto digits_index = static_cast<unsigned>(abs_value);
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+        else
+        {
+            *(--buffer_ptr) = static_cast<char>('0' + abs_value);
+        }
+
+        o->write_characters(number_buffer.data(), n_chars);
+    }
+
+    /*!
+    @brief dump a floating-point number
+
+    Dump a given floating-point number to output stream @a o. Works internally
+    with @a number_buffer.
+
+    @param[in] x  floating-point number to dump
+    */
+    void dump_float(number_float_t x)
+    {
+        // NaN / inf
+        if (!std::isfinite(x))
+        {
+            o->write_characters("null", 4);
+            return;
+        }
+
+        // If number_float_t is an IEEE-754 single or double precision number,
+        // use the Grisu2 algorithm to produce short numbers which are
+        // guaranteed to round-trip, using strtof and strtod, resp.
+        //
+        // NB: The test below works if <long double> == <double>.
+        static constexpr bool is_ieee_single_or_double
+            = (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 24 && std::numeric_limits<number_float_t>::max_exponent == 128) ||
+              (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 53 && std::numeric_limits<number_float_t>::max_exponent == 1024);
+
+        dump_float(x, std::integral_constant<bool, is_ieee_single_or_double>());
+    }
+
+    void dump_float(number_float_t x, std::true_type /*is_ieee_single_or_double*/)
+    {
+        auto* begin = number_buffer.data();
+        auto* end = ::nlohmann::detail::to_chars(begin, begin + number_buffer.size(), x);
+
+        o->write_characters(begin, static_cast<size_t>(end - begin));
+    }
+
+    void dump_float(number_float_t x, std::false_type /*is_ieee_single_or_double*/)
+    {
+        // get number of digits for a float -> text -> float round-trip
+        static constexpr auto d = std::numeric_limits<number_float_t>::max_digits10;
+
+        // the actual conversion
+        // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        std::ptrdiff_t len = (std::snprintf)(number_buffer.data(), number_buffer.size(), "%.*g", d, x);
+
+        // negative value indicates an error
+        JSON_ASSERT(len > 0);
+        // check if buffer was large enough
+        JSON_ASSERT(static_cast<std::size_t>(len) < number_buffer.size());
+
+        // erase thousands separator
+        if (thousands_sep != '\0')
+        {
+            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::remove returns an iterator, see https://github.com/nlohmann/json/issues/3081
+            const auto end = std::remove(number_buffer.begin(), number_buffer.begin() + len, thousands_sep);
+            std::fill(end, number_buffer.end(), '\0');
+            JSON_ASSERT((end - number_buffer.begin()) <= len);
+            len = (end - number_buffer.begin());
+        }
+
+        // convert decimal point to '.'
+        if (decimal_point != '\0' && decimal_point != '.')
+        {
+            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::find returns an iterator, see https://github.com/nlohmann/json/issues/3081
+            const auto dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
+            if (dec_pos != number_buffer.end())
+            {
+                *dec_pos = '.';
+            }
+        }
+
+        o->write_characters(number_buffer.data(), static_cast<std::size_t>(len));
+
+        // determine if we need to append ".0"
+        const bool value_is_int_like =
+            std::none_of(number_buffer.begin(), number_buffer.begin() + len + 1,
+                         [](char c)
+        {
+            return c == '.' || c == 'e';
+        });
+
+        if (value_is_int_like)
+        {
+            o->write_characters(".0", 2);
+        }
+    }
+
+    /*!
+    @brief check whether a string is UTF-8 encoded
+
+    The function checks each byte of a string whether it is UTF-8 encoded. The
+    result of the check is stored in the @a state parameter. The function must
+    be called initially with state 0 (accept). State 1 means the string must
+    be rejected, because the current byte is not allowed. If the string is
+    completely processed, but the state is non-zero, the string ended
+    prematurely; that is, the last byte indicated more bytes should have
+    followed.
+
+    @param[in,out] state  the state of the decoding
+    @param[in,out] codep  codepoint (valid only if resulting state is UTF8_ACCEPT)
+    @param[in] byte       next byte to decode
+    @return               new state
+
+    @note The function has been edited: a std::array is used.
+
+    @copyright Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+    @sa http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
+    */
+    static std::uint8_t decode(std::uint8_t& state, std::uint32_t& codep, const std::uint8_t byte) noexcept
+    {
+        static const std::array<std::uint8_t, 400> utf8d =
+        {
+            {
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7F
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9F
+                7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // A0..BF
+                8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C0..DF
+                0xA, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // E0..EF
+                0xB, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // F0..FF
+                0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
+                1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
+                1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
+                1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 // s7..s8
+            }
+        };
+
+        JSON_ASSERT(byte < utf8d.size());
+        const std::uint8_t type = utf8d[byte];
+
+        codep = (state != UTF8_ACCEPT)
+                ? (byte & 0x3fu) | (codep << 6u)
+                : (0xFFu >> type) & (byte);
+
+        const std::size_t index = 256u + (static_cast<size_t>(state) * 16u) + static_cast<size_t>(type);
+        JSON_ASSERT(index < utf8d.size());
+        state = utf8d[index];
+        return state;
+    }
+
+    /*
+     * Overload to make the compiler happy while it is instantiating
+     * dump_integer for number_unsigned_t.
+     * Must never be called.
+     */
+    number_unsigned_t remove_sign(number_unsigned_t x)
+    {
+        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        return x; // LCOV_EXCL_LINE
+    }
+
+    /*
+     * Helper function for dump_integer
+     *
+     * This function takes a negative signed integer and returns its absolute
+     * value as unsigned integer. The plus/minus shuffling is necessary as we can
+     * not directly remove the sign of an arbitrary signed integer as the
+     * absolute values of INT_MIN and INT_MAX are usually not the same. See
+     * #1708 for details.
+     */
+    number_unsigned_t remove_sign(number_integer_t x) noexcept
+    {
+        JSON_ASSERT(x < 0 && x < (std::numeric_limits<number_integer_t>::max)()); // NOLINT(misc-redundant-expression)
+        return static_cast<number_unsigned_t>(-(x + 1)) + 1;
+    }
+
+  private:
+    /// the output of the serializer
+    output_adapter_t<char> o = nullptr;
+
+    /// a (hopefully) large enough character buffer
+    std::array<char, 64> number_buffer{{}};
+
+    /// the locale
+    const std::lconv* loc = nullptr;
+    /// the locale's thousand separator character
+    const char thousands_sep = '\0';
+    /// the locale's decimal point character
+    const char decimal_point = '\0';
+
+    /// string buffer
+    std::array<char, 512> string_buffer{{}};
+
+    /// the indentation character
+    const char indent_char;
+    /// the indentation string
+    string_t indent_string;
+
+    /// error_handler how to react on decoding errors
+    const error_handler_t error_handler;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_concat.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_concat.hpp
new file mode 100644
index 00000000..b086ebc7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_concat.hpp
@@ -0,0 +1,146 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstring> // strlen
+#include <string> // string
+#include <utility> // forward
+
+#include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/meta/detected.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+inline std::size_t concat_length()
+{
+    return 0;
+}
+
+template<typename... Args>
+inline std::size_t concat_length(const char* cstr, const Args& ... rest);
+
+template<typename StringType, typename... Args>
+inline std::size_t concat_length(const StringType& str, const Args& ... rest);
+
+template<typename... Args>
+inline std::size_t concat_length(const char /*c*/, const Args& ... rest)
+{
+    return 1 + concat_length(rest...);
+}
+
+template<typename... Args>
+inline std::size_t concat_length(const char* cstr, const Args& ... rest)
+{
+    // cppcheck-suppress ignoredReturnValue
+    return ::strlen(cstr) + concat_length(rest...);
+}
+
+template<typename StringType, typename... Args>
+inline std::size_t concat_length(const StringType& str, const Args& ... rest)
+{
+    return str.size() + concat_length(rest...);
+}
+
+template<typename OutStringType>
+inline void concat_into(OutStringType& /*out*/)
+{}
+
+template<typename StringType, typename Arg>
+using string_can_append = decltype(std::declval<StringType&>().append(std::declval < Arg && > ()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append = is_detected<string_can_append, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_op = decltype(std::declval<StringType&>() += std::declval < Arg && > ());
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_op = is_detected<string_can_append_op, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_iter = decltype(std::declval<StringType&>().append(std::declval<const Arg&>().begin(), std::declval<const Arg&>().end()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_iter = is_detected<string_can_append_iter, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_data = decltype(std::declval<StringType&>().append(std::declval<const Arg&>().data(), std::declval<const Arg&>().size()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_data = is_detected<string_can_append_data, StringType, Arg>;
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && detect_string_can_append_op<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest);
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && !detect_string_can_append_iter<OutStringType, Arg>::value
+                         && detect_string_can_append_data<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
+
+template<typename OutStringType, typename Arg, typename... Args,
+         enable_if_t<detect_string_can_append<OutStringType, Arg>::value, int> = 0>
+inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest)
+{
+    out.append(std::forward<Arg>(arg));
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && detect_string_can_append_op<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, Arg&& arg, Args&& ... rest)
+{
+    out += std::forward<Arg>(arg);
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
+{
+    out.append(arg.begin(), arg.end());
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && !detect_string_can_append_iter<OutStringType, Arg>::value
+                         && detect_string_can_append_data<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
+{
+    out.append(arg.data(), arg.size());
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template<typename OutStringType = std::string, typename... Args>
+inline OutStringType concat(Args && ... args)
+{
+    OutStringType str;
+    str.reserve(concat_length(args...));
+    concat_into(str, std::forward<Args>(args)...);
+    return str;
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_escape.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_escape.hpp
new file mode 100644
index 00000000..dadab25b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_escape.hpp
@@ -0,0 +1,72 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief replace all occurrences of a substring by another string
+
+@param[in,out] s  the string to manipulate; changed so that all
+               occurrences of @a f are replaced with @a t
+@param[in]     f  the substring to replace with @a t
+@param[in]     t  the string to replace @a f
+
+@pre The search string @a f must not be empty. **This precondition is
+enforced with an assertion.**
+
+@since version 2.0.0
+*/
+template<typename StringType>
+inline void replace_substring(StringType& s, const StringType& f,
+                              const StringType& t)
+{
+    JSON_ASSERT(!f.empty());
+    for (auto pos = s.find(f);                // find first occurrence of f
+            pos != StringType::npos;          // make sure f was found
+            s.replace(pos, f.size(), t),      // replace with t, and
+            pos = s.find(f, pos + t.size()))  // find next occurrence of f
+    {}
+}
+
+/*!
+ * @brief string escaping as described in RFC 6901 (Sect. 4)
+ * @param[in] s string to escape
+ * @return    escaped string
+ *
+ * Note the order of escaping "~" to "~0" and "/" to "~1" is important.
+ */
+template<typename StringType>
+inline StringType escape(StringType s)
+{
+    replace_substring(s, StringType{"~"}, StringType{"~0"});
+    replace_substring(s, StringType{"/"}, StringType{"~1"});
+    return s;
+}
+
+/*!
+ * @brief string unescaping as described in RFC 6901 (Sect. 4)
+ * @param[in] s string to unescape
+ * @return    unescaped string
+ *
+ * Note the order of escaping "~1" to "/" and "~0" to "~" is important.
+ */
+template<typename StringType>
+static void unescape(StringType& s)
+{
+    replace_substring(s, StringType{"~1"}, StringType{"/"});
+    replace_substring(s, StringType{"~0"}, StringType{"~"});
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_utils.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_utils.hpp
new file mode 100644
index 00000000..0ac28c65
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/string_utils.hpp
@@ -0,0 +1,37 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstddef> // size_t
+#include <string> // string, to_string
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename StringType>
+void int_to_string(StringType& target, std::size_t value)
+{
+    // For ADL
+    using std::to_string;
+    target = to_string(value);
+}
+
+template<typename StringType>
+StringType to_string(std::size_t value)
+{
+    StringType result;
+    int_to_string(result, value);
+    return result;
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/value_t.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/value_t.hpp
new file mode 100644
index 00000000..9fdbfe8e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/detail/value_t.hpp
@@ -0,0 +1,118 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t
+#include <string> // string
+
+#include <nlohmann/detail/macro_scope.hpp>
+#if JSON_HAS_THREE_WAY_COMPARISON
+    #include <compare> // partial_ordering
+#endif
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////////////
+// JSON type enumeration //
+///////////////////////////
+
+/*!
+@brief the JSON type enumeration
+
+This enumeration collects the different JSON types. It is internally used to
+distinguish the stored values, and the functions @ref basic_json::is_null(),
+@ref basic_json::is_object(), @ref basic_json::is_array(),
+@ref basic_json::is_string(), @ref basic_json::is_boolean(),
+@ref basic_json::is_number() (with @ref basic_json::is_number_integer(),
+@ref basic_json::is_number_unsigned(), and @ref basic_json::is_number_float()),
+@ref basic_json::is_discarded(), @ref basic_json::is_primitive(), and
+@ref basic_json::is_structured() rely on it.
+
+@note There are three enumeration entries (number_integer, number_unsigned, and
+number_float), because the library distinguishes these three types for numbers:
+@ref basic_json::number_unsigned_t is used for unsigned integers,
+@ref basic_json::number_integer_t is used for signed integers, and
+@ref basic_json::number_float_t is used for floating-point numbers or to
+approximate integers which do not fit in the limits of their respective type.
+
+@sa see @ref basic_json::basic_json(const value_t value_type) -- create a JSON
+value with the default value for a given type
+
+@since version 1.0.0
+*/
+enum class value_t : std::uint8_t
+{
+    null,             ///< null value
+    object,           ///< object (unordered set of name/value pairs)
+    array,            ///< array (ordered collection of values)
+    string,           ///< string value
+    boolean,          ///< boolean value
+    number_integer,   ///< number value (signed integer)
+    number_unsigned,  ///< number value (unsigned integer)
+    number_float,     ///< number value (floating-point)
+    binary,           ///< binary array (ordered collection of bytes)
+    discarded         ///< discarded by the parser callback function
+};
+
+/*!
+@brief comparison operator for JSON types
+
+Returns an ordering that is similar to Python:
+- order: null < boolean < number < object < array < string < binary
+- furthermore, each type is not smaller than itself
+- discarded values are not comparable
+- binary is represented as a b"" string in python and directly comparable to a
+  string; however, making a binary array directly comparable with a string would
+  be surprising behavior in a JSON file.
+
+@since version 1.0.0
+*/
+#if JSON_HAS_THREE_WAY_COMPARISON
+    inline std::partial_ordering operator<=>(const value_t lhs, const value_t rhs) noexcept // *NOPAD*
+#else
+    inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+#endif
+{
+    static constexpr std::array<std::uint8_t, 9> order = {{
+            0 /* null */, 3 /* object */, 4 /* array */, 5 /* string */,
+            1 /* boolean */, 2 /* integer */, 2 /* unsigned */, 2 /* float */,
+            6 /* binary */
+        }
+    };
+
+    const auto l_index = static_cast<std::size_t>(lhs);
+    const auto r_index = static_cast<std::size_t>(rhs);
+#if JSON_HAS_THREE_WAY_COMPARISON
+    if (l_index < order.size() && r_index < order.size())
+    {
+        return order[l_index] <=> order[r_index]; // *NOPAD*
+    }
+    return std::partial_ordering::unordered;
+#else
+    return l_index < order.size() && r_index < order.size() && order[l_index] < order[r_index];
+#endif
+}
+
+// GCC selects the built-in operator< over an operator rewritten from
+// a user-defined spaceship operator
+// Clang, MSVC, and ICC select the rewritten candidate
+// (see GCC bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105200)
+#if JSON_HAS_THREE_WAY_COMPARISON && defined(__GNUC__)
+inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+{
+    return std::is_lt(lhs <=> rhs); // *NOPAD*
+}
+#endif
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/json.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/json.hpp
new file mode 100644
index 00000000..7234177a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/json.hpp
@@ -0,0 +1,5301 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/****************************************************************************\
+ * Note on documentation: The source files contain links to the online      *
+ * documentation of the public API at https://json.nlohmann.me. This URL    *
+ * contains the most recent documentation and should also be applicable to  *
+ * previous versions; documentation for deprecated functions is not         *
+ * removed, but marked deprecated. See "Generate documentation" section in  *
+ * file docs/README.md.                                                     *
+\****************************************************************************/
+
+#ifndef INCLUDE_NLOHMANN_JSON_HPP_
+#define INCLUDE_NLOHMANN_JSON_HPP_
+
+#include <algorithm> // all_of, find, for_each
+#include <cstddef> // nullptr_t, ptrdiff_t, size_t
+#include <functional> // hash, less
+#include <initializer_list> // initializer_list
+#ifndef JSON_NO_IO
+    #include <iosfwd> // istream, ostream
+#endif  // JSON_NO_IO
+#include <iterator> // random_access_iterator_tag
+#include <memory> // unique_ptr
+#include <string> // string, stoi, to_string
+#include <utility> // declval, forward, move, pair, swap
+#include <vector> // vector
+
+#include <nlohmann/adl_serializer.hpp>
+#include <nlohmann/byte_container_with_subtype.hpp>
+#include <nlohmann/detail/conversions/from_json.hpp>
+#include <nlohmann/detail/conversions/to_json.hpp>
+#include <nlohmann/detail/exceptions.hpp>
+#include <nlohmann/detail/hash.hpp>
+#include <nlohmann/detail/input/binary_reader.hpp>
+#include <nlohmann/detail/input/input_adapters.hpp>
+#include <nlohmann/detail/input/lexer.hpp>
+#include <nlohmann/detail/input/parser.hpp>
+#include <nlohmann/detail/iterators/internal_iterator.hpp>
+#include <nlohmann/detail/iterators/iter_impl.hpp>
+#include <nlohmann/detail/iterators/iteration_proxy.hpp>
+#include <nlohmann/detail/iterators/json_reverse_iterator.hpp>
+#include <nlohmann/detail/iterators/primitive_iterator.hpp>
+#include <nlohmann/detail/json_custom_base_class.hpp>
+#include <nlohmann/detail/json_pointer.hpp>
+#include <nlohmann/detail/json_ref.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/string_concat.hpp>
+#include <nlohmann/detail/string_escape.hpp>
+#include <nlohmann/detail/string_utils.hpp>
+#include <nlohmann/detail/meta/cpp_future.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/detail/output/binary_writer.hpp>
+#include <nlohmann/detail/output/output_adapters.hpp>
+#include <nlohmann/detail/output/serializer.hpp>
+#include <nlohmann/detail/value_t.hpp>
+#include <nlohmann/json_fwd.hpp>
+#include <nlohmann/ordered_map.hpp>
+
+#if defined(JSON_HAS_CPP_17)
+    #if JSON_HAS_STATIC_RTTI
+        #include <any>
+    #endif
+    #include <string_view>
+#endif
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/*!
+@brief a class to store JSON values
+
+@internal
+@invariant The member variables @a m_value and @a m_type have the following
+relationship:
+- If `m_type == value_t::object`, then `m_value.object != nullptr`.
+- If `m_type == value_t::array`, then `m_value.array != nullptr`.
+- If `m_type == value_t::string`, then `m_value.string != nullptr`.
+The invariants are checked by member function assert_invariant().
+
+@note ObjectType trick from https://stackoverflow.com/a/9860911
+@endinternal
+
+@since version 1.0.0
+
+@nosubgrouping
+*/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+    : public ::nlohmann::detail::json_base_class<CustomBaseClass>
+{
+  private:
+    template<detail::value_t> friend struct detail::external_constructor;
+
+    template<typename>
+    friend class ::nlohmann::json_pointer;
+    // can be restored when json_pointer backwards compatibility is removed
+    // friend ::nlohmann::json_pointer<StringType>;
+
+    template<typename BasicJsonType, typename InputType>
+    friend class ::nlohmann::detail::parser;
+    friend ::nlohmann::detail::serializer<basic_json>;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::iter_impl;
+    template<typename BasicJsonType, typename CharType>
+    friend class ::nlohmann::detail::binary_writer;
+    template<typename BasicJsonType, typename InputType, typename SAX>
+    friend class ::nlohmann::detail::binary_reader;
+    template<typename BasicJsonType, typename InputAdapterType>
+    friend class ::nlohmann::detail::json_sax_dom_parser;
+    template<typename BasicJsonType, typename InputAdapterType>
+    friend class ::nlohmann::detail::json_sax_dom_callback_parser;
+    friend class ::nlohmann::detail::exception;
+
+    /// workaround type for MSVC
+    using basic_json_t = NLOHMANN_BASIC_JSON_TPL;
+    using json_base_class_t = ::nlohmann::detail::json_base_class<CustomBaseClass>;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // convenience aliases for types residing in namespace detail;
+    using lexer = ::nlohmann::detail::lexer_base<basic_json>;
+
+    template<typename InputAdapterType>
+    static ::nlohmann::detail::parser<basic_json, InputAdapterType> parser(
+        InputAdapterType adapter,
+        detail::parser_callback_t<basic_json>cb = nullptr,
+        const bool allow_exceptions = true,
+        const bool ignore_comments = false
+    )
+    {
+        return ::nlohmann::detail::parser<basic_json, InputAdapterType>(std::move(adapter),
+                std::move(cb), allow_exceptions, ignore_comments);
+    }
+
+  private:
+    using primitive_iterator_t = ::nlohmann::detail::primitive_iterator_t;
+    template<typename BasicJsonType>
+    using internal_iterator = ::nlohmann::detail::internal_iterator<BasicJsonType>;
+    template<typename BasicJsonType>
+    using iter_impl = ::nlohmann::detail::iter_impl<BasicJsonType>;
+    template<typename Iterator>
+    using iteration_proxy = ::nlohmann::detail::iteration_proxy<Iterator>;
+    template<typename Base> using json_reverse_iterator = ::nlohmann::detail::json_reverse_iterator<Base>;
+
+    template<typename CharType>
+    using output_adapter_t = ::nlohmann::detail::output_adapter_t<CharType>;
+
+    template<typename InputType>
+    using binary_reader = ::nlohmann::detail::binary_reader<basic_json, InputType>;
+    template<typename CharType> using binary_writer = ::nlohmann::detail::binary_writer<basic_json, CharType>;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    using serializer = ::nlohmann::detail::serializer<basic_json>;
+
+  public:
+    using value_t = detail::value_t;
+    /// JSON Pointer, see @ref nlohmann::json_pointer
+    using json_pointer = ::nlohmann::json_pointer<StringType>;
+    template<typename T, typename SFINAE>
+    using json_serializer = JSONSerializer<T, SFINAE>;
+    /// how to treat decoding errors
+    using error_handler_t = detail::error_handler_t;
+    /// how to treat CBOR tags
+    using cbor_tag_handler_t = detail::cbor_tag_handler_t;
+    /// helper type for initializer lists of basic_json values
+    using initializer_list_t = std::initializer_list<detail::json_ref<basic_json>>;
+
+    using input_format_t = detail::input_format_t;
+    /// SAX interface type, see @ref nlohmann::json_sax
+    using json_sax_t = json_sax<basic_json>;
+
+    ////////////////
+    // exceptions //
+    ////////////////
+
+    /// @name exceptions
+    /// Classes to implement user-defined exceptions.
+    /// @{
+
+    using exception = detail::exception;
+    using parse_error = detail::parse_error;
+    using invalid_iterator = detail::invalid_iterator;
+    using type_error = detail::type_error;
+    using out_of_range = detail::out_of_range;
+    using other_error = detail::other_error;
+
+    /// @}
+
+    /////////////////////
+    // container types //
+    /////////////////////
+
+    /// @name container types
+    /// The canonic container types to use @ref basic_json like any other STL
+    /// container.
+    /// @{
+
+    /// the type of elements in a basic_json container
+    using value_type = basic_json;
+
+    /// the type of an element reference
+    using reference = value_type&;
+    /// the type of an element const reference
+    using const_reference = const value_type&;
+
+    /// a type to represent differences between iterators
+    using difference_type = std::ptrdiff_t;
+    /// a type to represent container sizes
+    using size_type = std::size_t;
+
+    /// the allocator type
+    using allocator_type = AllocatorType<basic_json>;
+
+    /// the type of an element pointer
+    using pointer = typename std::allocator_traits<allocator_type>::pointer;
+    /// the type of an element const pointer
+    using const_pointer = typename std::allocator_traits<allocator_type>::const_pointer;
+
+    /// an iterator for a basic_json container
+    using iterator = iter_impl<basic_json>;
+    /// a const iterator for a basic_json container
+    using const_iterator = iter_impl<const basic_json>;
+    /// a reverse iterator for a basic_json container
+    using reverse_iterator = json_reverse_iterator<typename basic_json::iterator>;
+    /// a const reverse iterator for a basic_json container
+    using const_reverse_iterator = json_reverse_iterator<typename basic_json::const_iterator>;
+
+    /// @}
+
+    /// @brief returns the allocator associated with the container
+    /// @sa https://json.nlohmann.me/api/basic_json/get_allocator/
+    static allocator_type get_allocator()
+    {
+        return allocator_type();
+    }
+
+    /// @brief returns version information on the library
+    /// @sa https://json.nlohmann.me/api/basic_json/meta/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json meta()
+    {
+        basic_json result;
+
+        result["copyright"] = "(C) 2013-2023 Niels Lohmann";
+        result["name"] = "JSON for Modern C++";
+        result["url"] = "https://github.com/nlohmann/json";
+        result["version"]["string"] =
+            detail::concat(std::to_string(NLOHMANN_JSON_VERSION_MAJOR), '.',
+                           std::to_string(NLOHMANN_JSON_VERSION_MINOR), '.',
+                           std::to_string(NLOHMANN_JSON_VERSION_PATCH));
+        result["version"]["major"] = NLOHMANN_JSON_VERSION_MAJOR;
+        result["version"]["minor"] = NLOHMANN_JSON_VERSION_MINOR;
+        result["version"]["patch"] = NLOHMANN_JSON_VERSION_PATCH;
+
+#ifdef _WIN32
+        result["platform"] = "win32";
+#elif defined __linux__
+        result["platform"] = "linux";
+#elif defined __APPLE__
+        result["platform"] = "apple";
+#elif defined __unix__
+        result["platform"] = "unix";
+#else
+        result["platform"] = "unknown";
+#endif
+
+#if defined(__ICC) || defined(__INTEL_COMPILER)
+        result["compiler"] = {{"family", "icc"}, {"version", __INTEL_COMPILER}};
+#elif defined(__clang__)
+        result["compiler"] = {{"family", "clang"}, {"version", __clang_version__}};
+#elif defined(__GNUC__) || defined(__GNUG__)
+        result["compiler"] = {{"family", "gcc"}, {"version", detail::concat(
+                    std::to_string(__GNUC__), '.',
+                    std::to_string(__GNUC_MINOR__), '.',
+                    std::to_string(__GNUC_PATCHLEVEL__))
+            }
+        };
+#elif defined(__HP_cc) || defined(__HP_aCC)
+        result["compiler"] = "hp"
+#elif defined(__IBMCPP__)
+        result["compiler"] = {{"family", "ilecpp"}, {"version", __IBMCPP__}};
+#elif defined(_MSC_VER)
+        result["compiler"] = {{"family", "msvc"}, {"version", _MSC_VER}};
+#elif defined(__PGI)
+        result["compiler"] = {{"family", "pgcpp"}, {"version", __PGI}};
+#elif defined(__SUNPRO_CC)
+        result["compiler"] = {{"family", "sunpro"}, {"version", __SUNPRO_CC}};
+#else
+        result["compiler"] = {{"family", "unknown"}, {"version", "unknown"}};
+#endif
+
+#if defined(_MSVC_LANG)
+        result["compiler"]["c++"] = std::to_string(_MSVC_LANG);
+#elif defined(__cplusplus)
+        result["compiler"]["c++"] = std::to_string(__cplusplus);
+#else
+        result["compiler"]["c++"] = "unknown";
+#endif
+        return result;
+    }
+
+    ///////////////////////////
+    // JSON value data types //
+    ///////////////////////////
+
+    /// @name JSON value data types
+    /// The data types to store a JSON value. These types are derived from
+    /// the template arguments passed to class @ref basic_json.
+    /// @{
+
+    /// @brief default object key comparator type
+    /// The actual object key comparator type (@ref object_comparator_t) may be
+    /// different.
+    /// @sa https://json.nlohmann.me/api/basic_json/default_object_comparator_t/
+#if defined(JSON_HAS_CPP_14)
+    // use of transparent comparator avoids unnecessary repeated construction of temporaries
+    // in functions involving lookup by key with types other than object_t::key_type (aka. StringType)
+    using default_object_comparator_t = std::less<>;
+#else
+    using default_object_comparator_t = std::less<StringType>;
+#endif
+
+    /// @brief a type for an object
+    /// @sa https://json.nlohmann.me/api/basic_json/object_t/
+    using object_t = ObjectType<StringType,
+          basic_json,
+          default_object_comparator_t,
+          AllocatorType<std::pair<const StringType,
+          basic_json>>>;
+
+    /// @brief a type for an array
+    /// @sa https://json.nlohmann.me/api/basic_json/array_t/
+    using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
+
+    /// @brief a type for a string
+    /// @sa https://json.nlohmann.me/api/basic_json/string_t/
+    using string_t = StringType;
+
+    /// @brief a type for a boolean
+    /// @sa https://json.nlohmann.me/api/basic_json/boolean_t/
+    using boolean_t = BooleanType;
+
+    /// @brief a type for a number (integer)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_integer_t/
+    using number_integer_t = NumberIntegerType;
+
+    /// @brief a type for a number (unsigned)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_unsigned_t/
+    using number_unsigned_t = NumberUnsignedType;
+
+    /// @brief a type for a number (floating-point)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_float_t/
+    using number_float_t = NumberFloatType;
+
+    /// @brief a type for a packed binary type
+    /// @sa https://json.nlohmann.me/api/basic_json/binary_t/
+    using binary_t = nlohmann::byte_container_with_subtype<BinaryType>;
+
+    /// @brief object key comparator type
+    /// @sa https://json.nlohmann.me/api/basic_json/object_comparator_t/
+    using object_comparator_t = detail::actual_object_comparator_t<basic_json>;
+
+    /// @}
+
+  private:
+
+    /// helper for exception-safe object creation
+    template<typename T, typename... Args>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    static T* create(Args&& ... args)
+    {
+        AllocatorType<T> alloc;
+        using AllocatorTraits = std::allocator_traits<AllocatorType<T>>;
+
+        auto deleter = [&](T * obj)
+        {
+            AllocatorTraits::deallocate(alloc, obj, 1);
+        };
+        std::unique_ptr<T, decltype(deleter)> obj(AllocatorTraits::allocate(alloc, 1), deleter);
+        AllocatorTraits::construct(alloc, obj.get(), std::forward<Args>(args)...);
+        JSON_ASSERT(obj != nullptr);
+        return obj.release();
+    }
+
+    ////////////////////////
+    // JSON value storage //
+    ////////////////////////
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief a JSON value
+
+    The actual storage for a JSON value of the @ref basic_json class. This
+    union combines the different storage types for the JSON value types
+    defined in @ref value_t.
+
+    JSON type | value_t type    | used type
+    --------- | --------------- | ------------------------
+    object    | object          | pointer to @ref object_t
+    array     | array           | pointer to @ref array_t
+    string    | string          | pointer to @ref string_t
+    boolean   | boolean         | @ref boolean_t
+    number    | number_integer  | @ref number_integer_t
+    number    | number_unsigned | @ref number_unsigned_t
+    number    | number_float    | @ref number_float_t
+    binary    | binary          | pointer to @ref binary_t
+    null      | null            | *no value is stored*
+
+    @note Variable-length types (objects, arrays, and strings) are stored as
+    pointers. The size of the union should not exceed 64 bits if the default
+    value types are used.
+
+    @since version 1.0.0
+    */
+    union json_value
+    {
+        /// object (stored with pointer to save storage)
+        object_t* object;
+        /// array (stored with pointer to save storage)
+        array_t* array;
+        /// string (stored with pointer to save storage)
+        string_t* string;
+        /// binary (stored with pointer to save storage)
+        binary_t* binary;
+        /// boolean
+        boolean_t boolean;
+        /// number (integer)
+        number_integer_t number_integer;
+        /// number (unsigned integer)
+        number_unsigned_t number_unsigned;
+        /// number (floating-point)
+        number_float_t number_float;
+
+        /// default constructor (for null values)
+        json_value() = default;
+        /// constructor for booleans
+        json_value(boolean_t v) noexcept : boolean(v) {}
+        /// constructor for numbers (integer)
+        json_value(number_integer_t v) noexcept : number_integer(v) {}
+        /// constructor for numbers (unsigned)
+        json_value(number_unsigned_t v) noexcept : number_unsigned(v) {}
+        /// constructor for numbers (floating-point)
+        json_value(number_float_t v) noexcept : number_float(v) {}
+        /// constructor for empty values of a given type
+        json_value(value_t t)
+        {
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    object = create<object_t>();
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    array = create<array_t>();
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    string = create<string_t>("");
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    binary = create<binary_t>();
+                    break;
+                }
+
+                case value_t::boolean:
+                {
+                    boolean = static_cast<boolean_t>(false);
+                    break;
+                }
+
+                case value_t::number_integer:
+                {
+                    number_integer = static_cast<number_integer_t>(0);
+                    break;
+                }
+
+                case value_t::number_unsigned:
+                {
+                    number_unsigned = static_cast<number_unsigned_t>(0);
+                    break;
+                }
+
+                case value_t::number_float:
+                {
+                    number_float = static_cast<number_float_t>(0.0);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    break;
+                }
+
+                case value_t::discarded:
+                default:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    if (JSON_HEDLEY_UNLIKELY(t == value_t::null))
+                    {
+                        JSON_THROW(other_error::create(500, "961c151d2e87f2686a955a9be24d316f1362bf21 3.11.3", nullptr)); // LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+            }
+        }
+
+        /// constructor for strings
+        json_value(const string_t& value) : string(create<string_t>(value)) {}
+
+        /// constructor for rvalue strings
+        json_value(string_t&& value) : string(create<string_t>(std::move(value))) {}
+
+        /// constructor for objects
+        json_value(const object_t& value) : object(create<object_t>(value)) {}
+
+        /// constructor for rvalue objects
+        json_value(object_t&& value) : object(create<object_t>(std::move(value))) {}
+
+        /// constructor for arrays
+        json_value(const array_t& value) : array(create<array_t>(value)) {}
+
+        /// constructor for rvalue arrays
+        json_value(array_t&& value) : array(create<array_t>(std::move(value))) {}
+
+        /// constructor for binary arrays
+        json_value(const typename binary_t::container_type& value) : binary(create<binary_t>(value)) {}
+
+        /// constructor for rvalue binary arrays
+        json_value(typename binary_t::container_type&& value) : binary(create<binary_t>(std::move(value))) {}
+
+        /// constructor for binary arrays (internal type)
+        json_value(const binary_t& value) : binary(create<binary_t>(value)) {}
+
+        /// constructor for rvalue binary arrays (internal type)
+        json_value(binary_t&& value) : binary(create<binary_t>(std::move(value))) {}
+
+        void destroy(value_t t)
+        {
+            if (
+                (t == value_t::object && object == nullptr) ||
+                (t == value_t::array && array == nullptr) ||
+                (t == value_t::string && string == nullptr) ||
+                (t == value_t::binary && binary == nullptr)
+            )
+            {
+                //not initialized (e.g. due to exception in the ctor)
+                return;
+            }
+            if (t == value_t::array || t == value_t::object)
+            {
+                // flatten the current json_value to a heap-allocated stack
+                std::vector<basic_json> stack;
+
+                // move the top-level items to stack
+                if (t == value_t::array)
+                {
+                    stack.reserve(array->size());
+                    std::move(array->begin(), array->end(), std::back_inserter(stack));
+                }
+                else
+                {
+                    stack.reserve(object->size());
+                    for (auto&& it : *object)
+                    {
+                        stack.push_back(std::move(it.second));
+                    }
+                }
+
+                while (!stack.empty())
+                {
+                    // move the last item to local variable to be processed
+                    basic_json current_item(std::move(stack.back()));
+                    stack.pop_back();
+
+                    // if current_item is array/object, move
+                    // its children to the stack to be processed later
+                    if (current_item.is_array())
+                    {
+                        std::move(current_item.m_data.m_value.array->begin(), current_item.m_data.m_value.array->end(), std::back_inserter(stack));
+
+                        current_item.m_data.m_value.array->clear();
+                    }
+                    else if (current_item.is_object())
+                    {
+                        for (auto&& it : *current_item.m_data.m_value.object)
+                        {
+                            stack.push_back(std::move(it.second));
+                        }
+
+                        current_item.m_data.m_value.object->clear();
+                    }
+
+                    // it's now safe that current_item get destructed
+                    // since it doesn't have any children
+                }
+            }
+
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    AllocatorType<object_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, object);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, object, 1);
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    AllocatorType<array_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, array);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, array, 1);
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, string, 1);
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, binary, 1);
+                    break;
+                }
+
+                case value_t::null:
+                case value_t::boolean:
+                case value_t::number_integer:
+                case value_t::number_unsigned:
+                case value_t::number_float:
+                case value_t::discarded:
+                default:
+                {
+                    break;
+                }
+            }
+        }
+    };
+
+  private:
+    /*!
+    @brief checks the class invariants
+
+    This function asserts the class invariants. It needs to be called at the
+    end of every constructor to make sure that created objects respect the
+    invariant. Furthermore, it has to be called each time the type of a JSON
+    value is changed, because the invariant expresses a relationship between
+    @a m_type and @a m_value.
+
+    Furthermore, the parent relation is checked for arrays and objects: If
+    @a check_parents true and the value is an array or object, then the
+    container's elements must have the current value as parent.
+
+    @param[in] check_parents  whether the parent relation should be checked.
+               The value is true by default and should only be set to false
+               during destruction of objects when the invariant does not
+               need to hold.
+    */
+    void assert_invariant(bool check_parents = true) const noexcept
+    {
+        JSON_ASSERT(m_data.m_type != value_t::object || m_data.m_value.object != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::array || m_data.m_value.array != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::string || m_data.m_value.string != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::binary || m_data.m_value.binary != nullptr);
+
+#if JSON_DIAGNOSTICS
+        JSON_TRY
+        {
+            // cppcheck-suppress assertWithSideEffect
+            JSON_ASSERT(!check_parents || !is_structured() || std::all_of(begin(), end(), [this](const basic_json & j)
+            {
+                return j.m_parent == this;
+            }));
+        }
+        JSON_CATCH(...) {} // LCOV_EXCL_LINE
+#endif
+        static_cast<void>(check_parents);
+    }
+
+    void set_parents()
+    {
+#if JSON_DIAGNOSTICS
+        switch (m_data.m_type)
+        {
+            case value_t::array:
+            {
+                for (auto& element : *m_data.m_value.array)
+                {
+                    element.m_parent = this;
+                }
+                break;
+            }
+
+            case value_t::object:
+            {
+                for (auto& element : *m_data.m_value.object)
+                {
+                    element.second.m_parent = this;
+                }
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                break;
+        }
+#endif
+    }
+
+    iterator set_parents(iterator it, typename iterator::difference_type count_set_parents)
+    {
+#if JSON_DIAGNOSTICS
+        for (typename iterator::difference_type i = 0; i < count_set_parents; ++i)
+        {
+            (it + i)->m_parent = this;
+        }
+#else
+        static_cast<void>(count_set_parents);
+#endif
+        return it;
+    }
+
+    reference set_parent(reference j, std::size_t old_capacity = static_cast<std::size_t>(-1))
+    {
+#if JSON_DIAGNOSTICS
+        if (old_capacity != static_cast<std::size_t>(-1))
+        {
+            // see https://github.com/nlohmann/json/issues/2838
+            JSON_ASSERT(type() == value_t::array);
+            if (JSON_HEDLEY_UNLIKELY(m_data.m_value.array->capacity() != old_capacity))
+            {
+                // capacity has changed: update all parents
+                set_parents();
+                return j;
+            }
+        }
+
+        // ordered_json uses a vector internally, so pointers could have
+        // been invalidated; see https://github.com/nlohmann/json/issues/2962
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning(push )
+#pragma warning(disable : 4127) // ignore warning to replace if with if constexpr
+#endif
+        if (detail::is_ordered_map<object_t>::value)
+        {
+            set_parents();
+            return j;
+        }
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning( pop )
+#endif
+
+        j.m_parent = this;
+#else
+        static_cast<void>(j);
+        static_cast<void>(old_capacity);
+#endif
+        return j;
+    }
+
+  public:
+    //////////////////////////
+    // JSON parser callback //
+    //////////////////////////
+
+    /// @brief parser event types
+    /// @sa https://json.nlohmann.me/api/basic_json/parse_event_t/
+    using parse_event_t = detail::parse_event_t;
+
+    /// @brief per-element parser callback type
+    /// @sa https://json.nlohmann.me/api/basic_json/parser_callback_t/
+    using parser_callback_t = detail::parser_callback_t<basic_json>;
+
+    //////////////////
+    // constructors //
+    //////////////////
+
+    /// @name constructors and destructors
+    /// Constructors of class @ref basic_json, copy/move constructor, copy
+    /// assignment, static functions creating objects, and the destructor.
+    /// @{
+
+    /// @brief create an empty value with a given type
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(const value_t v)
+        : m_data(v)
+    {
+        assert_invariant();
+    }
+
+    /// @brief create a null object
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(std::nullptr_t = nullptr) noexcept // NOLINT(bugprone-exception-escape)
+        : basic_json(value_t::null)
+    {
+        assert_invariant();
+    }
+
+    /// @brief create a JSON value from compatible types
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < typename CompatibleType,
+               typename U = detail::uncvref_t<CompatibleType>,
+               detail::enable_if_t <
+                   !detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
+    basic_json(CompatibleType && val) noexcept(noexcept( // NOLINT(bugprone-forwarding-reference-overload,bugprone-exception-escape)
+                JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
+                                           std::forward<CompatibleType>(val))))
+    {
+        JSONSerializer<U>::to_json(*this, std::forward<CompatibleType>(val));
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief create a JSON value from an existing one
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value&& !std::is_same<basic_json, BasicJsonType>::value, int > = 0 >
+    basic_json(const BasicJsonType& val)
+#if JSON_DIAGNOSTIC_POSITIONS
+        : start_position(val.start_position),
+          end_position(val.end_position)
+#endif
+    {
+        using other_boolean_t = typename BasicJsonType::boolean_t;
+        using other_number_float_t = typename BasicJsonType::number_float_t;
+        using other_number_integer_t = typename BasicJsonType::number_integer_t;
+        using other_number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+        using other_string_t = typename BasicJsonType::string_t;
+        using other_object_t = typename BasicJsonType::object_t;
+        using other_array_t = typename BasicJsonType::array_t;
+        using other_binary_t = typename BasicJsonType::binary_t;
+
+        switch (val.type())
+        {
+            case value_t::boolean:
+                JSONSerializer<other_boolean_t>::to_json(*this, val.template get<other_boolean_t>());
+                break;
+            case value_t::number_float:
+                JSONSerializer<other_number_float_t>::to_json(*this, val.template get<other_number_float_t>());
+                break;
+            case value_t::number_integer:
+                JSONSerializer<other_number_integer_t>::to_json(*this, val.template get<other_number_integer_t>());
+                break;
+            case value_t::number_unsigned:
+                JSONSerializer<other_number_unsigned_t>::to_json(*this, val.template get<other_number_unsigned_t>());
+                break;
+            case value_t::string:
+                JSONSerializer<other_string_t>::to_json(*this, val.template get_ref<const other_string_t&>());
+                break;
+            case value_t::object:
+                JSONSerializer<other_object_t>::to_json(*this, val.template get_ref<const other_object_t&>());
+                break;
+            case value_t::array:
+                JSONSerializer<other_array_t>::to_json(*this, val.template get_ref<const other_array_t&>());
+                break;
+            case value_t::binary:
+                JSONSerializer<other_binary_t>::to_json(*this, val.template get_ref<const other_binary_t&>());
+                break;
+            case value_t::null:
+                *this = nullptr;
+                break;
+            case value_t::discarded:
+                m_data.m_type = value_t::discarded;
+                break;
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+        JSON_ASSERT(m_data.m_type == val.type());
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief create a container (array or object) from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(initializer_list_t init,
+               bool type_deduction = true,
+               value_t manual_type = value_t::array)
+    {
+        // check if each element is an array with two elements whose first
+        // element is a string
+        bool is_an_object = std::all_of(init.begin(), init.end(),
+                                        [](const detail::json_ref<basic_json>& element_ref)
+        {
+            // The cast is to ensure op[size_type] is called, bearing in mind size_type may not be int;
+            // (many string types can be constructed from 0 via its null-pointer guise, so we get a
+            // broken call to op[key_type], the wrong semantics and a 4804 warning on Windows)
+            return element_ref->is_array() && element_ref->size() == 2 && (*element_ref)[static_cast<size_type>(0)].is_string();
+        });
+
+        // adjust type if type deduction is not wanted
+        if (!type_deduction)
+        {
+            // if array is wanted, do not create an object though possible
+            if (manual_type == value_t::array)
+            {
+                is_an_object = false;
+            }
+
+            // if object is wanted but impossible, throw an exception
+            if (JSON_HEDLEY_UNLIKELY(manual_type == value_t::object && !is_an_object))
+            {
+                JSON_THROW(type_error::create(301, "cannot create object from initializer list", nullptr));
+            }
+        }
+
+        if (is_an_object)
+        {
+            // the initializer list is a list of pairs -> create object
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+
+            for (auto& element_ref : init)
+            {
+                auto element = element_ref.moved_or_copied();
+                m_data.m_value.object->emplace(
+                    std::move(*((*element.m_data.m_value.array)[0].m_data.m_value.string)),
+                    std::move((*element.m_data.m_value.array)[1]));
+            }
+        }
+        else
+        {
+            // the initializer list describes an array -> create array
+            m_data.m_type = value_t::array;
+            m_data.m_value.array = create<array_t>(init.begin(), init.end());
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief explicitly create a binary array (without subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = init;
+        return res;
+    }
+
+    /// @brief explicitly create a binary array (with subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init, typename binary_t::subtype_type subtype)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = binary_t(init, subtype);
+        return res;
+    }
+
+    /// @brief explicitly create a binary array
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = std::move(init);
+        return res;
+    }
+
+    /// @brief explicitly create a binary array (with subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init, typename binary_t::subtype_type subtype)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = binary_t(std::move(init), subtype);
+        return res;
+    }
+
+    /// @brief explicitly create an array from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/array/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json array(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::array);
+    }
+
+    /// @brief explicitly create an object from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/object/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json object(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::object);
+    }
+
+    /// @brief construct an array with count copies of given value
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(size_type cnt, const basic_json& val):
+        m_data{cnt, val}
+    {
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief construct a JSON container given an iterator range
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < class InputIT, typename std::enable_if <
+                   std::is_same<InputIT, typename basic_json_t::iterator>::value ||
+                   std::is_same<InputIT, typename basic_json_t::const_iterator>::value, int >::type = 0 >
+    basic_json(InputIT first, InputIT last) // NOLINT(performance-unnecessary-value-param)
+    {
+        JSON_ASSERT(first.m_object != nullptr);
+        JSON_ASSERT(last.m_object != nullptr);
+
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(201, "iterators are not compatible", nullptr));
+        }
+
+        // copy type from first iterator
+        m_data.m_type = first.m_object->m_data.m_type;
+
+        // check if iterator range is complete for primitive values
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!first.m_it.primitive_iterator.is_begin()
+                                         || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", first.m_object));
+                }
+                break;
+            }
+
+            case value_t::null:
+            case value_t::object:
+            case value_t::array:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                break;
+        }
+
+        switch (m_data.m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_data.m_value.number_integer = first.m_object->m_data.m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value.number_unsigned = first.m_object->m_data.m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value.number_float = first.m_object->m_data.m_value.number_float;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value.boolean = first.m_object->m_data.m_value.boolean;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value = *first.m_object->m_data.m_value.string;
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_data.m_value.object = create<object_t>(first.m_it.object_iterator,
+                                        last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value.array = create<array_t>(first.m_it.array_iterator,
+                                                       last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value = *first.m_object->m_data.m_value.binary;
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(invalid_iterator::create(206, detail::concat("cannot construct with iterators from ", first.m_object->type_name()), first.m_object));
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    ///////////////////////////////////////
+    // other constructors and destructor //
+    ///////////////////////////////////////
+
+    template<typename JsonRef,
+             detail::enable_if_t<detail::conjunction<detail::is_json_ref<JsonRef>,
+                                 std::is_same<typename JsonRef::value_type, basic_json>>::value, int> = 0 >
+    basic_json(const JsonRef& ref) : basic_json(ref.moved_or_copied()) {}
+
+    /// @brief copy constructor
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(const basic_json& other)
+        : json_base_class_t(other)
+#if JSON_DIAGNOSTIC_POSITIONS
+        , start_position(other.start_position)
+        , end_position(other.end_position)
+#endif
+    {
+        m_data.m_type = other.m_data.m_type;
+        // check of passed value is valid
+        other.assert_invariant();
+
+        switch (m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_data.m_value = *other.m_data.m_value.object;
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value = *other.m_data.m_value.array;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value = *other.m_data.m_value.string;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value = other.m_data.m_value.boolean;
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                m_data.m_value = other.m_data.m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value = other.m_data.m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value = other.m_data.m_value.number_float;
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value = *other.m_data.m_value.binary;
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                break;
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief move constructor
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(basic_json&& other) noexcept
+        : json_base_class_t(std::forward<json_base_class_t>(other)),
+          m_data(std::move(other.m_data)) // cppcheck-suppress[accessForwarded] TODO check
+#if JSON_DIAGNOSTIC_POSITIONS
+        , start_position(other.start_position) // cppcheck-suppress[accessForwarded] TODO check
+        , end_position(other.end_position) // cppcheck-suppress[accessForwarded] TODO check
+#endif
+    {
+        // check that passed value is valid
+        other.assert_invariant(false); // cppcheck-suppress[accessForwarded]
+
+        // invalidate payload
+        other.m_data.m_type = value_t::null;
+        other.m_data.m_value = {};
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        other.start_position = std::string::npos;
+        other.end_position = std::string::npos;
+#endif
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief copy assignment
+    /// @sa https://json.nlohmann.me/api/basic_json/operator=/
+    basic_json& operator=(basic_json other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value&&
+        std::is_nothrow_move_assignable<json_base_class_t>::value
+    )
+    {
+        // check that passed value is valid
+        other.assert_invariant();
+
+        using std::swap;
+        swap(m_data.m_type, other.m_data.m_type);
+        swap(m_data.m_value, other.m_data.m_value);
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        swap(start_position, other.start_position);
+        swap(end_position, other.end_position);
+#endif
+
+        json_base_class_t::operator=(std::move(other));
+
+        set_parents();
+        assert_invariant();
+        return *this;
+    }
+
+    /// @brief destructor
+    /// @sa https://json.nlohmann.me/api/basic_json/~basic_json/
+    ~basic_json() noexcept
+    {
+        assert_invariant(false);
+    }
+
+    /// @}
+
+  public:
+    ///////////////////////
+    // object inspection //
+    ///////////////////////
+
+    /// @name object inspection
+    /// Functions to inspect the type of a JSON value.
+    /// @{
+
+    /// @brief serialization
+    /// @sa https://json.nlohmann.me/api/basic_json/dump/
+    string_t dump(const int indent = -1,
+                  const char indent_char = ' ',
+                  const bool ensure_ascii = false,
+                  const error_handler_t error_handler = error_handler_t::strict) const
+    {
+        string_t result;
+        serializer s(detail::output_adapter<char, string_t>(result), indent_char, error_handler);
+
+        if (indent >= 0)
+        {
+            s.dump(*this, true, ensure_ascii, static_cast<unsigned int>(indent));
+        }
+        else
+        {
+            s.dump(*this, false, ensure_ascii, 0);
+        }
+
+        return result;
+    }
+
+    /// @brief return the type of the JSON value (explicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/type/
+    constexpr value_t type() const noexcept
+    {
+        return m_data.m_type;
+    }
+
+    /// @brief return whether type is primitive
+    /// @sa https://json.nlohmann.me/api/basic_json/is_primitive/
+    constexpr bool is_primitive() const noexcept
+    {
+        return is_null() || is_string() || is_boolean() || is_number() || is_binary();
+    }
+
+    /// @brief return whether type is structured
+    /// @sa https://json.nlohmann.me/api/basic_json/is_structured/
+    constexpr bool is_structured() const noexcept
+    {
+        return is_array() || is_object();
+    }
+
+    /// @brief return whether value is null
+    /// @sa https://json.nlohmann.me/api/basic_json/is_null/
+    constexpr bool is_null() const noexcept
+    {
+        return m_data.m_type == value_t::null;
+    }
+
+    /// @brief return whether value is a boolean
+    /// @sa https://json.nlohmann.me/api/basic_json/is_boolean/
+    constexpr bool is_boolean() const noexcept
+    {
+        return m_data.m_type == value_t::boolean;
+    }
+
+    /// @brief return whether value is a number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number/
+    constexpr bool is_number() const noexcept
+    {
+        return is_number_integer() || is_number_float();
+    }
+
+    /// @brief return whether value is an integer number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_integer/
+    constexpr bool is_number_integer() const noexcept
+    {
+        return m_data.m_type == value_t::number_integer || m_data.m_type == value_t::number_unsigned;
+    }
+
+    /// @brief return whether value is an unsigned integer number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_unsigned/
+    constexpr bool is_number_unsigned() const noexcept
+    {
+        return m_data.m_type == value_t::number_unsigned;
+    }
+
+    /// @brief return whether value is a floating-point number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_float/
+    constexpr bool is_number_float() const noexcept
+    {
+        return m_data.m_type == value_t::number_float;
+    }
+
+    /// @brief return whether value is an object
+    /// @sa https://json.nlohmann.me/api/basic_json/is_object/
+    constexpr bool is_object() const noexcept
+    {
+        return m_data.m_type == value_t::object;
+    }
+
+    /// @brief return whether value is an array
+    /// @sa https://json.nlohmann.me/api/basic_json/is_array/
+    constexpr bool is_array() const noexcept
+    {
+        return m_data.m_type == value_t::array;
+    }
+
+    /// @brief return whether value is a string
+    /// @sa https://json.nlohmann.me/api/basic_json/is_string/
+    constexpr bool is_string() const noexcept
+    {
+        return m_data.m_type == value_t::string;
+    }
+
+    /// @brief return whether value is a binary array
+    /// @sa https://json.nlohmann.me/api/basic_json/is_binary/
+    constexpr bool is_binary() const noexcept
+    {
+        return m_data.m_type == value_t::binary;
+    }
+
+    /// @brief return whether value is discarded
+    /// @sa https://json.nlohmann.me/api/basic_json/is_discarded/
+    constexpr bool is_discarded() const noexcept
+    {
+        return m_data.m_type == value_t::discarded;
+    }
+
+    /// @brief return the type of the JSON value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_value_t/
+    constexpr operator value_t() const noexcept
+    {
+        return m_data.m_type;
+    }
+
+    /// @}
+
+  private:
+    //////////////////
+    // value access //
+    //////////////////
+
+    /// get a boolean (explicit)
+    boolean_t get_impl(boolean_t* /*unused*/) const
+    {
+        if (JSON_HEDLEY_LIKELY(is_boolean()))
+        {
+            return m_data.m_value.boolean;
+        }
+
+        JSON_THROW(type_error::create(302, detail::concat("type must be boolean, but is ", type_name()), this));
+    }
+
+    /// get a pointer to the value (object)
+    object_t* get_impl_ptr(object_t* /*unused*/) noexcept
+    {
+        return is_object() ? m_data.m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (object)
+    constexpr const object_t* get_impl_ptr(const object_t* /*unused*/) const noexcept
+    {
+        return is_object() ? m_data.m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    array_t* get_impl_ptr(array_t* /*unused*/) noexcept
+    {
+        return is_array() ? m_data.m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    constexpr const array_t* get_impl_ptr(const array_t* /*unused*/) const noexcept
+    {
+        return is_array() ? m_data.m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    string_t* get_impl_ptr(string_t* /*unused*/) noexcept
+    {
+        return is_string() ? m_data.m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    constexpr const string_t* get_impl_ptr(const string_t* /*unused*/) const noexcept
+    {
+        return is_string() ? m_data.m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    boolean_t* get_impl_ptr(boolean_t* /*unused*/) noexcept
+    {
+        return is_boolean() ? &m_data.m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    constexpr const boolean_t* get_impl_ptr(const boolean_t* /*unused*/) const noexcept
+    {
+        return is_boolean() ? &m_data.m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    number_integer_t* get_impl_ptr(number_integer_t* /*unused*/) noexcept
+    {
+        return m_data.m_type == value_t::number_integer ? &m_data.m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    constexpr const number_integer_t* get_impl_ptr(const number_integer_t* /*unused*/) const noexcept
+    {
+        return m_data.m_type == value_t::number_integer ? &m_data.m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    number_unsigned_t* get_impl_ptr(number_unsigned_t* /*unused*/) noexcept
+    {
+        return is_number_unsigned() ? &m_data.m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    constexpr const number_unsigned_t* get_impl_ptr(const number_unsigned_t* /*unused*/) const noexcept
+    {
+        return is_number_unsigned() ? &m_data.m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    number_float_t* get_impl_ptr(number_float_t* /*unused*/) noexcept
+    {
+        return is_number_float() ? &m_data.m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    constexpr const number_float_t* get_impl_ptr(const number_float_t* /*unused*/) const noexcept
+    {
+        return is_number_float() ? &m_data.m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    binary_t* get_impl_ptr(binary_t* /*unused*/) noexcept
+    {
+        return is_binary() ? m_data.m_value.binary : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    constexpr const binary_t* get_impl_ptr(const binary_t* /*unused*/) const noexcept
+    {
+        return is_binary() ? m_data.m_value.binary : nullptr;
+    }
+
+    /*!
+    @brief helper function to implement get_ref()
+
+    This function helps to implement get_ref() without code duplication for
+    const and non-const overloads
+
+    @tparam ThisType will be deduced as `basic_json` or `const basic_json`
+
+    @throw type_error.303 if ReferenceType does not match underlying value
+    type of the current JSON
+    */
+    template<typename ReferenceType, typename ThisType>
+    static ReferenceType get_ref_impl(ThisType& obj)
+    {
+        // delegate the call to get_ptr<>()
+        auto* ptr = obj.template get_ptr<typename std::add_pointer<ReferenceType>::type>();
+
+        if (JSON_HEDLEY_LIKELY(ptr != nullptr))
+        {
+            return *ptr;
+        }
+
+        JSON_THROW(type_error::create(303, detail::concat("incompatible ReferenceType for get_ref, actual type is ", obj.type_name()), &obj));
+    }
+
+  public:
+    /// @name value access
+    /// Direct access to the stored value of a JSON value.
+    /// @{
+
+    /// @brief get a pointer value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get_ptr() noexcept -> decltype(std::declval<basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>()
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+    /// @brief get a pointer value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
+    template < typename PointerType, typename std::enable_if <
+                   std::is_pointer<PointerType>::value&&
+                   std::is_const<typename std::remove_pointer<PointerType>::type>::value, int >::type = 0 >
+    constexpr auto get_ptr() const noexcept -> decltype(std::declval<const basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>() const
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+  private:
+    /*!
+    @brief get a value (explicit)
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    ValueType ret;
+    JSONSerializer<ValueType>::from_json(*this, ret);
+    return ret;
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json,
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `void from_json(const basic_json&, ValueType&)`, and
+    - @ref json_serializer<ValueType> does not have a `from_json()` method of
+      the form `ValueType from_json(const basic_json&)`
+
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,get__ValueType_const}
+
+    @since version 2.1.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   detail::is_default_constructible<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get_impl(detail::priority_tag<0> /*unused*/) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), std::declval<ValueType&>())))
+    {
+        auto ret = ValueType();
+        JSONSerializer<ValueType>::from_json(*this, ret);
+        return ret;
+    }
+
+    /*!
+    @brief get a value (explicit); special case
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is **not** [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and **not** [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    return JSONSerializer<ValueType>::from_json(*this);
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json and
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `ValueType from_json(const basic_json&)`
+
+    @note If @ref json_serializer<ValueType> has both overloads of
+    `from_json()`, this one is chosen.
+
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @since version 2.1.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   detail::has_non_default_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get_impl(detail::priority_tag<1> /*unused*/) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>())))
+    {
+        return JSONSerializer<ValueType>::from_json(*this);
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads converts the current @ref basic_json in a different
+    @ref basic_json type
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this, converted into @a BasicJsonType
+
+    @complexity Depending on the implementation of the called `from_json()`
+                method.
+
+    @since version 3.2.0
+    */
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value,
+                   int > = 0 >
+    BasicJsonType get_impl(detail::priority_tag<2> /*unused*/) const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads avoids a lot of template boilerplate, it can be seen as the
+    identity method
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this
+
+    @complexity Constant.
+
+    @since version 2.1.0
+    */
+    template<typename BasicJsonType,
+             detail::enable_if_t<
+                 std::is_same<BasicJsonType, basic_json_t>::value,
+                 int> = 0>
+    basic_json get_impl(detail::priority_tag<3> /*unused*/) const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+    @copydoc get()
+    */
+    template<typename PointerType,
+             detail::enable_if_t<
+                 std::is_pointer<PointerType>::value,
+                 int> = 0>
+    constexpr auto get_impl(detail::priority_tag<4> /*unused*/) const noexcept
+    -> decltype(std::declval<const basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+  public:
+    /*!
+    @brief get a (pointer) value (explicit)
+
+    Performs explicit type conversion between the JSON value and a compatible value if required.
+
+    - If the requested type is a pointer to the internally stored JSON value that pointer is returned.
+    No copies are made.
+
+    - If the requested type is the current @ref basic_json, or a different @ref basic_json convertible
+    from the current @ref basic_json.
+
+    - Otherwise the value is converted by calling the @ref json_serializer<ValueType> `from_json()`
+    method.
+
+    @tparam ValueTypeCV the provided value type
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @tparam ValueType if necessary
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws if conversion is required
+
+    @since version 2.1.0
+    */
+    template < typename ValueTypeCV, typename ValueType = detail::uncvref_t<ValueTypeCV>>
+#if defined(JSON_HAS_CPP_14)
+    constexpr
+#endif
+    auto get() const noexcept(
+    noexcept(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {})))
+    -> decltype(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {}))
+    {
+        // we cannot static_assert on ValueTypeCV being non-const, because
+        // there is support for get<const basic_json_t>(), which is why we
+        // still need the uncvref
+        static_assert(!std::is_reference<ValueTypeCV>::value,
+                      "get() cannot be used with reference types, you might want to use get_ref()");
+        return get_impl<ValueType>(detail::priority_tag<4> {});
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+
+    Explicit pointer access to the internally stored JSON value. No copies are
+    made.
+
+    @warning The pointer becomes invalid if the underlying JSON object
+    changes.
+
+    @tparam PointerType pointer type; must be a pointer to @ref array_t, @ref
+    object_t, @ref string_t, @ref boolean_t, @ref number_integer_t,
+    @ref number_unsigned_t, or @ref number_float_t.
+
+    @return pointer to the internally stored JSON value if the requested
+    pointer type @a PointerType fits to the JSON value; `nullptr` otherwise
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how pointers to internal values of a
+    JSON value can be requested. Note that no type conversions are made and a
+    `nullptr` is returned if the value and the requested pointer type does not
+    match.,get__PointerType}
+
+    @sa see @ref get_ptr() for explicit pointer-member access
+
+    @since version 1.0.0
+    */
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get() noexcept -> decltype(std::declval<basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+    /// @brief get a value (explicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_to/
+    template < typename ValueType,
+               detail::enable_if_t <
+                   !detail::is_basic_json<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType & get_to(ValueType& v) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<ValueType>::from_json(*this, v);
+        return v;
+    }
+
+    // specialization to allow calling get_to with a basic_json value
+    // see https://github.com/nlohmann/json/issues/2175
+    template<typename ValueType,
+             detail::enable_if_t <
+                 detail::is_basic_json<ValueType>::value,
+                 int> = 0>
+    ValueType & get_to(ValueType& v) const
+    {
+        v = *this;
+        return v;
+    }
+
+    template <
+        typename T, std::size_t N,
+        typename Array = T (&)[N], // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+        detail::enable_if_t <
+            detail::has_from_json<basic_json_t, Array>::value, int > = 0 >
+    Array get_to(T (&v)[N]) const // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    noexcept(noexcept(JSONSerializer<Array>::from_json(
+                          std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<Array>::from_json(*this, v);
+        return v;
+    }
+
+    /// @brief get a reference value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
+    template<typename ReferenceType, typename std::enable_if<
+                 std::is_reference<ReferenceType>::value, int>::type = 0>
+    ReferenceType get_ref()
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /// @brief get a reference value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
+    template < typename ReferenceType, typename std::enable_if <
+                   std::is_reference<ReferenceType>::value&&
+                   std::is_const<typename std::remove_reference<ReferenceType>::type>::value, int >::type = 0 >
+    ReferenceType get_ref() const
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /*!
+    @brief get a value (implicit)
+
+    Implicit type conversion between the JSON value and a compatible value.
+    The call is realized by calling @ref get() const.
+
+    @tparam ValueType non-pointer type compatible to the JSON value, for
+    instance `int` for JSON integer numbers, `bool` for JSON booleans, or
+    `std::vector` types for JSON arrays. The character type of @ref string_t
+    as well as an initializer list of this type is excluded to avoid
+    ambiguities as these types implicitly convert to `std::string`.
+
+    @return copy of the JSON value, converted to type @a ValueType
+
+    @throw type_error.302 in case passed type @a ValueType is incompatible
+    to the JSON value type (e.g., the JSON value is of type boolean, but a
+    string is requested); see example below
+
+    @complexity Linear in the size of the JSON value.
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,operator__ValueType}
+
+    @since version 1.0.0
+    */
+    template < typename ValueType, typename std::enable_if <
+                   detail::conjunction <
+                       detail::negation<std::is_pointer<ValueType>>,
+                       detail::negation<std::is_same<ValueType, std::nullptr_t>>,
+                       detail::negation<std::is_same<ValueType, detail::json_ref<basic_json>>>,
+                                        detail::negation<std::is_same<ValueType, typename string_t::value_type>>,
+                                        detail::negation<detail::is_basic_json<ValueType>>,
+                                        detail::negation<std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>>,
+#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) && _MSC_VER >= 1910 && _MSC_VER <= 1914))
+                                                detail::negation<std::is_same<ValueType, std::string_view>>,
+#endif
+#if defined(JSON_HAS_CPP_17) && JSON_HAS_STATIC_RTTI
+                                                detail::negation<std::is_same<ValueType, std::any>>,
+#endif
+                                                detail::is_detected_lazy<detail::get_template_function, const basic_json_t&, ValueType>
+                                                >::value, int >::type = 0 >
+                                        JSON_EXPLICIT operator ValueType() const
+    {
+        // delegate the call to get<>() const
+        return get<ValueType>();
+    }
+
+    /// @brief get a binary value
+    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
+    binary_t& get_binary()
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, detail::concat("type must be binary, but is ", type_name()), this));
+        }
+
+        return *get_ptr<binary_t*>();
+    }
+
+    /// @brief get a binary value
+    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
+    const binary_t& get_binary() const
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, detail::concat("type must be binary, but is ", type_name()), this));
+        }
+
+        return *get_ptr<const binary_t*>();
+    }
+
+    /// @}
+
+    ////////////////////
+    // element access //
+    ////////////////////
+
+    /// @name element access
+    /// Access to the JSON value.
+    /// @{
+
+    /// @brief access specified array element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(size_type idx)
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return set_parent(m_data.m_value.array->at(idx));
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            } // cppcheck-suppress[missingReturn]
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+    }
+
+    /// @brief access specified array element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(size_type idx) const
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return m_data.m_value.array->at(idx);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            } // cppcheck-suppress[missingReturn]
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(const typename object_t::key_type& key)
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(key);
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", key, "' not found"), this));
+        }
+        return set_parent(it->second);
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    reference at(KeyType && key)
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", string_t(std::forward<KeyType>(key)), "' not found"), this));
+        }
+        return set_parent(it->second);
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(const typename object_t::key_type& key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(key);
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", key, "' not found"), this));
+        }
+        return it->second;
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    const_reference at(KeyType && key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", string_t(std::forward<KeyType>(key)), "' not found"), this));
+        }
+        return it->second;
+    }
+
+    /// @brief access specified array element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](size_type idx)
+    {
+        // implicitly convert null value to an empty array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value.array = create<array_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // fill up array with null values if given idx is outside range
+            if (idx >= m_data.m_value.array->size())
+            {
+#if JSON_DIAGNOSTICS
+                // remember array size & capacity before resizing
+                const auto old_size = m_data.m_value.array->size();
+                const auto old_capacity = m_data.m_value.array->capacity();
+#endif
+                m_data.m_value.array->resize(idx + 1);
+
+#if JSON_DIAGNOSTICS
+                if (JSON_HEDLEY_UNLIKELY(m_data.m_value.array->capacity() != old_capacity))
+                {
+                    // capacity has changed: update all parents
+                    set_parents();
+                }
+                else
+                {
+                    // set parent for values added above
+                    set_parents(begin() + static_cast<typename iterator::difference_type>(old_size), static_cast<typename iterator::difference_type>(idx + 1 - old_size));
+                }
+#endif
+                assert_invariant();
+            }
+
+            return m_data.m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a numeric argument with ", type_name()), this));
+    }
+
+    /// @brief access specified array element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](size_type idx) const
+    {
+        // const operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            return m_data.m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a numeric argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](typename object_t::key_type key) // NOLINT(performance-unnecessary-value-param)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto result = m_data.m_value.object->emplace(std::move(key), nullptr);
+            return set_parent(result.first->second);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](const typename object_t::key_type& key) const
+    {
+        // const operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto it = m_data.m_value.object->find(key);
+            JSON_ASSERT(it != m_data.m_value.object->end());
+            return it->second;
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    // these two functions resolve a (const) char * ambiguity affecting Clang and MSVC
+    // (they seemingly cannot be constrained to resolve the ambiguity)
+    template<typename T>
+    reference operator[](T* key)
+    {
+        return operator[](typename object_t::key_type(key));
+    }
+
+    template<typename T>
+    const_reference operator[](T* key) const
+    {
+        return operator[](typename object_t::key_type(key));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    reference operator[](KeyType && key)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto result = m_data.m_value.object->emplace(std::forward<KeyType>(key), nullptr);
+            return set_parent(result.first->second);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    const_reference operator[](KeyType && key) const
+    {
+        // const operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+            JSON_ASSERT(it != m_data.m_value.object->end());
+            return it->second;
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+  private:
+    template<typename KeyType>
+    using is_comparable_with_object_key = detail::is_comparable <
+        object_comparator_t, const typename object_t::key_type&, KeyType >;
+
+    template<typename ValueType>
+    using value_return_type = std::conditional <
+        detail::is_c_string_uncvref<ValueType>::value,
+        string_t, typename std::decay<ValueType>::type >;
+
+  public:
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, detail::enable_if_t <
+                   !detail::is_transparent<object_comparator_t>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(const typename object_t::key_type& key, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(key);
+            if (it != end())
+            {
+                return it->template get<ValueType>();
+            }
+
+            return default_value;
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   !detail::is_transparent<object_comparator_t>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(const typename object_t::key_type& key, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(key);
+            if (it != end())
+            {
+                return it->template get<ReturnType>();
+            }
+
+            return std::forward<ValueType>(default_value);
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class KeyType, detail::enable_if_t <
+                   detail::is_transparent<object_comparator_t>::value
+                   && !detail::is_json_pointer<KeyType>::value
+                   && is_comparable_with_object_key<KeyType>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(KeyType && key, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(std::forward<KeyType>(key));
+            if (it != end())
+            {
+                return it->template get<ValueType>();
+            }
+
+            return default_value;
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class KeyType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_transparent<object_comparator_t>::value
+                   && !detail::is_json_pointer<KeyType>::value
+                   && is_comparable_with_object_key<KeyType>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(KeyType && key, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(std::forward<KeyType>(key));
+            if (it != end())
+            {
+                return it->template get<ReturnType>();
+            }
+
+            return std::forward<ValueType>(default_value);
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, detail::enable_if_t <
+                   detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(const json_pointer& ptr, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if pointer resolves a value, return it or use default value
+            JSON_TRY
+            {
+                return ptr.get_checked(this).template get<ValueType>();
+            }
+            JSON_INTERNAL_CATCH (out_of_range&)
+            {
+                return default_value;
+            }
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(const json_pointer& ptr, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if pointer resolves a value, return it or use default value
+            JSON_TRY
+            {
+                return ptr.get_checked(this).template get<ReturnType>();
+            }
+            JSON_INTERNAL_CATCH (out_of_range&)
+            {
+                return std::forward<ValueType>(default_value);
+            }
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    template < class ValueType, class BasicJsonType, detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    ValueType value(const ::nlohmann::json_pointer<BasicJsonType>& ptr, const ValueType& default_value) const
+    {
+        return value(ptr.convert(), default_value);
+    }
+
+    template < class ValueType, class BasicJsonType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    ReturnType value(const ::nlohmann::json_pointer<BasicJsonType>& ptr, ValueType && default_value) const
+    {
+        return value(ptr.convert(), std::forward<ValueType>(default_value));
+    }
+
+    /// @brief access the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/front/
+    reference front()
+    {
+        return *begin();
+    }
+
+    /// @brief access the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/front/
+    const_reference front() const
+    {
+        return *cbegin();
+    }
+
+    /// @brief access the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/back/
+    reference back()
+    {
+        auto tmp = end();
+        --tmp;
+        return *tmp;
+    }
+
+    /// @brief access the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/back/
+    const_reference back() const
+    {
+        auto tmp = cend();
+        --tmp;
+        return *tmp;
+    }
+
+    /// @brief remove element given an iterator
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template < class IteratorType, detail::enable_if_t <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int > = 0 >
+    IteratorType erase(IteratorType pos) // NOLINT(performance-unnecessary-value-param)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != pos.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        IteratorType result = end();
+
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!pos.m_it.primitive_iterator.is_begin()))
+                {
+                    JSON_THROW(invalid_iterator::create(205, "iterator out of range", this));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.string, 1);
+                    m_data.m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.binary, 1);
+                    m_data.m_value.binary = nullptr;
+                }
+
+                m_data.m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_data.m_value.object->erase(pos.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_data.m_value.array->erase(pos.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return result;
+    }
+
+    /// @brief remove elements given an iterator range
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template < class IteratorType, detail::enable_if_t <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int > = 0 >
+    IteratorType erase(IteratorType first, IteratorType last) // NOLINT(performance-unnecessary-value-param)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != first.m_object || this != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(203, "iterators do not fit current value", this));
+        }
+
+        IteratorType result = end();
+
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_LIKELY(!first.m_it.primitive_iterator.is_begin()
+                                       || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", this));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.string, 1);
+                    m_data.m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.binary, 1);
+                    m_data.m_value.binary = nullptr;
+                }
+
+                m_data.m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_data.m_value.object->erase(first.m_it.object_iterator,
+                                              last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_data.m_value.array->erase(first.m_it.array_iterator,
+                                             last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return result;
+    }
+
+  private:
+    template < typename KeyType, detail::enable_if_t <
+                   detail::has_erase_with_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    size_type erase_internal(KeyType && key)
+    {
+        // this erase only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return m_data.m_value.object->erase(std::forward<KeyType>(key));
+    }
+
+    template < typename KeyType, detail::enable_if_t <
+                   !detail::has_erase_with_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    size_type erase_internal(KeyType && key)
+    {
+        // this erase only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        const auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it != m_data.m_value.object->end())
+        {
+            m_data.m_value.object->erase(it);
+            return 1;
+        }
+        return 0;
+    }
+
+  public:
+
+    /// @brief remove element from a JSON object given a key
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    size_type erase(const typename object_t::key_type& key)
+    {
+        // the indirection via erase_internal() is added to avoid making this
+        // function a template and thus de-rank it during overload resolution
+        return erase_internal(key);
+    }
+
+    /// @brief remove element from a JSON object given a key
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    size_type erase(KeyType && key)
+    {
+        return erase_internal(std::forward<KeyType>(key));
+    }
+
+    /// @brief remove element from a JSON array given an index
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    void erase(const size_type idx)
+    {
+        // this erase only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            if (JSON_HEDLEY_UNLIKELY(idx >= size()))
+            {
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            }
+
+            m_data.m_value.array->erase(m_data.m_value.array->begin() + static_cast<difference_type>(idx));
+        }
+        else
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+    }
+
+    /// @}
+
+    ////////////
+    // lookup //
+    ////////////
+
+    /// @name lookup
+    /// @{
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    iterator find(const typename object_t::key_type& key)
+    {
+        auto result = end();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(key);
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    const_iterator find(const typename object_t::key_type& key) const
+    {
+        auto result = cend();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(key);
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    iterator find(KeyType && key)
+    {
+        auto result = end();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(std::forward<KeyType>(key));
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    const_iterator find(KeyType && key) const
+    {
+        auto result = cend();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(std::forward<KeyType>(key));
+        }
+
+        return result;
+    }
+
+    /// @brief returns the number of occurrences of a key in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/count/
+    size_type count(const typename object_t::key_type& key) const
+    {
+        // return 0 for all nonobject types
+        return is_object() ? m_data.m_value.object->count(key) : 0;
+    }
+
+    /// @brief returns the number of occurrences of a key in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/count/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    size_type count(KeyType && key) const
+    {
+        // return 0 for all nonobject types
+        return is_object() ? m_data.m_value.object->count(std::forward<KeyType>(key)) : 0;
+    }
+
+    /// @brief check the existence of an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    bool contains(const typename object_t::key_type& key) const
+    {
+        return is_object() && m_data.m_value.object->find(key) != m_data.m_value.object->end();
+    }
+
+    /// @brief check the existence of an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    bool contains(KeyType && key) const
+    {
+        return is_object() && m_data.m_value.object->find(std::forward<KeyType>(key)) != m_data.m_value.object->end();
+    }
+
+    /// @brief check the existence of an element in a JSON object given a JSON pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    bool contains(const json_pointer& ptr) const
+    {
+        return ptr.contains(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    bool contains(const typename ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.contains(this);
+    }
+
+    /// @}
+
+    ///////////////
+    // iterators //
+    ///////////////
+
+    /// @name iterators
+    /// @{
+
+    /// @brief returns an iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/begin/
+    iterator begin() noexcept
+    {
+        iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /// @brief returns an iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/begin/
+    const_iterator begin() const noexcept
+    {
+        return cbegin();
+    }
+
+    /// @brief returns a const iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/cbegin/
+    const_iterator cbegin() const noexcept
+    {
+        const_iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/end/
+    iterator end() noexcept
+    {
+        iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/end/
+    const_iterator end() const noexcept
+    {
+        return cend();
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/cend/
+    const_iterator cend() const noexcept
+    {
+        const_iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /// @brief returns an iterator to the reverse-beginning
+    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
+    reverse_iterator rbegin() noexcept
+    {
+        return reverse_iterator(end());
+    }
+
+    /// @brief returns an iterator to the reverse-beginning
+    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
+    const_reverse_iterator rbegin() const noexcept
+    {
+        return crbegin();
+    }
+
+    /// @brief returns an iterator to the reverse-end
+    /// @sa https://json.nlohmann.me/api/basic_json/rend/
+    reverse_iterator rend() noexcept
+    {
+        return reverse_iterator(begin());
+    }
+
+    /// @brief returns an iterator to the reverse-end
+    /// @sa https://json.nlohmann.me/api/basic_json/rend/
+    const_reverse_iterator rend() const noexcept
+    {
+        return crend();
+    }
+
+    /// @brief returns a const reverse iterator to the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/crbegin/
+    const_reverse_iterator crbegin() const noexcept
+    {
+        return const_reverse_iterator(cend());
+    }
+
+    /// @brief returns a const reverse iterator to one before the first
+    /// @sa https://json.nlohmann.me/api/basic_json/crend/
+    const_reverse_iterator crend() const noexcept
+    {
+        return const_reverse_iterator(cbegin());
+    }
+
+  public:
+    /// @brief wrapper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use @ref items() instead;
+    ///             that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<iterator> iterator_wrapper(reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /// @brief wrapper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
+    ///         version 4.0.0 of the library. Please use @ref items() instead;
+    ///         that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<const_iterator> iterator_wrapper(const_reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /// @brief helper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    iteration_proxy<iterator> items() noexcept
+    {
+        return iteration_proxy<iterator>(*this);
+    }
+
+    /// @brief helper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    iteration_proxy<const_iterator> items() const noexcept
+    {
+        return iteration_proxy<const_iterator>(*this);
+    }
+
+    /// @}
+
+    //////////////
+    // capacity //
+    //////////////
+
+    /// @name capacity
+    /// @{
+
+    /// @brief checks whether the container is empty.
+    /// @sa https://json.nlohmann.me/api/basic_json/empty/
+    bool empty() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return true;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::empty()
+                return m_data.m_value.array->empty();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::empty()
+                return m_data.m_value.object->empty();
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types are nonempty
+                return false;
+            }
+        }
+    }
+
+    /// @brief returns the number of elements
+    /// @sa https://json.nlohmann.me/api/basic_json/size/
+    size_type size() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return 0;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::size()
+                return m_data.m_value.array->size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::size()
+                return m_data.m_value.object->size();
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types have size 1
+                return 1;
+            }
+        }
+    }
+
+    /// @brief returns the maximum possible number of elements
+    /// @sa https://json.nlohmann.me/api/basic_json/max_size/
+    size_type max_size() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::array:
+            {
+                // delegate call to array_t::max_size()
+                return m_data.m_value.array->max_size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::max_size()
+                return m_data.m_value.object->max_size();
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types have max_size() == size()
+                return size();
+            }
+        }
+    }
+
+    /// @}
+
+    ///////////////
+    // modifiers //
+    ///////////////
+
+    /// @name modifiers
+    /// @{
+
+    /// @brief clears the contents
+    /// @sa https://json.nlohmann.me/api/basic_json/clear/
+    void clear() noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_data.m_value.number_integer = 0;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value.number_unsigned = 0;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value.number_float = 0.0;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value.boolean = false;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value.string->clear();
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value.binary->clear();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value.array->clear();
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_data.m_value.object->clear();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(basic_json&& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (move semantics)
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->push_back(std::move(val));
+        set_parent(m_data.m_value.array->back(), old_capacity);
+        // if val is moved from, basic_json move constructor marks it null, so we do not call the destructor
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(basic_json&& val)
+    {
+        push_back(std::move(val));
+        return *this;
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(const basic_json& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->push_back(val);
+        set_parent(m_data.m_value.array->back(), old_capacity);
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(const basic_json& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(const typename object_t::value_type& val)
+    {
+        // push_back only works for null objects or objects
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to object
+        auto res = m_data.m_value.object->insert(val);
+        set_parent(res.first->second);
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(const typename object_t::value_type& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(initializer_list_t init)
+    {
+        if (is_object() && init.size() == 2 && (*init.begin())->is_string())
+        {
+            basic_json&& key = init.begin()->moved_or_copied();
+            push_back(typename object_t::value_type(
+                          std::move(key.get_ref<string_t&>()), (init.begin() + 1)->moved_or_copied()));
+        }
+        else
+        {
+            push_back(basic_json(init));
+        }
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(initializer_list_t init)
+    {
+        push_back(init);
+        return *this;
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/emplace_back/
+    template<class... Args>
+    reference emplace_back(Args&& ... args)
+    {
+        // emplace_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(311, detail::concat("cannot use emplace_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->emplace_back(std::forward<Args>(args)...);
+        return set_parent(m_data.m_value.array->back(), old_capacity);
+    }
+
+    /// @brief add an object to an object if key does not exist
+    /// @sa https://json.nlohmann.me/api/basic_json/emplace/
+    template<class... Args>
+    std::pair<iterator, bool> emplace(Args&& ... args)
+    {
+        // emplace only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(311, detail::concat("cannot use emplace() with ", type_name()), this));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        auto res = m_data.m_value.object->emplace(std::forward<Args>(args)...);
+        set_parent(res.first->second);
+
+        // create result iterator and set iterator to the result of emplace
+        auto it = begin();
+        it.m_it.object_iterator = res.first;
+
+        // return pair of iterator and boolean
+        return {it, res.second};
+    }
+
+    /// Helper for insertion of an iterator
+    /// @note: This uses std::distance to support GCC 4.8,
+    ///        see https://github.com/nlohmann/json/pull/1257
+    template<typename... Args>
+    iterator insert_iterator(const_iterator pos, Args&& ... args) // NOLINT(performance-unnecessary-value-param)
+    {
+        iterator result(this);
+        JSON_ASSERT(m_data.m_value.array != nullptr);
+
+        auto insert_pos = std::distance(m_data.m_value.array->begin(), pos.m_it.array_iterator);
+        m_data.m_value.array->insert(pos.m_it.array_iterator, std::forward<Args>(args)...);
+        result.m_it.array_iterator = m_data.m_value.array->begin() + insert_pos;
+
+        // This could have been written as:
+        // result.m_it.array_iterator = m_data.m_value.array->insert(pos.m_it.array_iterator, cnt, val);
+        // but the return value of insert is missing in GCC 4.8, so it is written this way instead.
+
+        set_parents();
+        return result;
+    }
+
+    /// @brief inserts element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, const basic_json& val) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, val);
+        }
+
+        JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+    }
+
+    /// @brief inserts element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, basic_json&& val) // NOLINT(performance-unnecessary-value-param)
+    {
+        return insert(pos, val);
+    }
+
+    /// @brief inserts copies of element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, size_type cnt, const basic_json& val) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, cnt, val);
+        }
+
+        JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+    }
+
+    /// @brief inserts range of elements into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, const_iterator first, const_iterator last) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(first.m_object == this))
+        {
+            JSON_THROW(invalid_iterator::create(211, "passed iterators may not belong to container", this));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, first.m_it.array_iterator, last.m_it.array_iterator);
+    }
+
+    /// @brief inserts elements from initializer list into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, initializer_list_t ilist) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, ilist.begin(), ilist.end());
+    }
+
+    /// @brief inserts range of elements into object
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    void insert(const_iterator first, const_iterator last) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterators first and last must point to objects", this));
+        }
+
+        m_data.m_value.object->insert(first.m_it.object_iterator, last.m_it.object_iterator);
+        set_parents();
+    }
+
+    /// @brief updates a JSON object from another object, overwriting existing keys
+    /// @sa https://json.nlohmann.me/api/basic_json/update/
+    void update(const_reference j, bool merge_objects = false)
+    {
+        update(j.begin(), j.end(), merge_objects);
+    }
+
+    /// @brief updates a JSON object from another object, overwriting existing keys
+    /// @sa https://json.nlohmann.me/api/basic_json/update/
+    void update(const_iterator first, const_iterator last, bool merge_objects = false) // NOLINT(performance-unnecessary-value-param)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(312, detail::concat("cannot use update() with ", type_name()), this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(type_error::create(312, detail::concat("cannot use update() with ", first.m_object->type_name()), first.m_object));
+        }
+
+        for (auto it = first; it != last; ++it)
+        {
+            if (merge_objects && it.value().is_object())
+            {
+                auto it2 = m_data.m_value.object->find(it.key());
+                if (it2 != m_data.m_value.object->end())
+                {
+                    it2->second.update(it.value(), true);
+                    continue;
+                }
+            }
+            m_data.m_value.object->operator[](it.key()) = it.value();
+#if JSON_DIAGNOSTICS
+            m_data.m_value.object->operator[](it.key()).m_parent = this;
+#endif
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(reference other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&& // NOLINT(cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        std::swap(m_data.m_type, other.m_data.m_type);
+        std::swap(m_data.m_value, other.m_data.m_value);
+
+        set_parents();
+        other.set_parents();
+        assert_invariant();
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    friend void swap(reference left, reference right) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&& // NOLINT(cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        left.swap(right);
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(array_t& other) // NOLINT(bugprone-exception-escape,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        // swap only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.array), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(array_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(object_t& other) // NOLINT(bugprone-exception-escape,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        // swap only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.object), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(object_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(string_t& other) // NOLINT(bugprone-exception-escape,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_string()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.string), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(string_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(binary_t& other) // NOLINT(bugprone-exception-escape,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(binary_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(typename binary_t::container_type& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(binary_t::container_type&) with ", type_name()), this));
+        }
+    }
+
+    /// @}
+
+    //////////////////////////////////////////
+    // lexicographical comparison operators //
+    //////////////////////////////////////////
+
+    /// @name lexicographical comparison operators
+    /// @{
+
+    // note parentheses around operands are necessary; see
+    // https://github.com/nlohmann/json/issues/1530
+#define JSON_IMPLEMENT_OPERATOR(op, null_result, unordered_result, default_result)                       \
+    const auto lhs_type = lhs.type();                                                                    \
+    const auto rhs_type = rhs.type();                                                                    \
+    \
+    if (lhs_type == rhs_type) /* NOLINT(readability/braces) */                                           \
+    {                                                                                                    \
+        switch (lhs_type)                                                                                \
+        {                                                                                                \
+            case value_t::array:                                                                         \
+                return (*lhs.m_data.m_value.array) op (*rhs.m_data.m_value.array);                                     \
+                \
+            case value_t::object:                                                                        \
+                return (*lhs.m_data.m_value.object) op (*rhs.m_data.m_value.object);                                   \
+                \
+            case value_t::null:                                                                          \
+                return (null_result);                                                                    \
+                \
+            case value_t::string:                                                                        \
+                return (*lhs.m_data.m_value.string) op (*rhs.m_data.m_value.string);                                   \
+                \
+            case value_t::boolean:                                                                       \
+                return (lhs.m_data.m_value.boolean) op (rhs.m_data.m_value.boolean);                                   \
+                \
+            case value_t::number_integer:                                                                \
+                return (lhs.m_data.m_value.number_integer) op (rhs.m_data.m_value.number_integer);                     \
+                \
+            case value_t::number_unsigned:                                                               \
+                return (lhs.m_data.m_value.number_unsigned) op (rhs.m_data.m_value.number_unsigned);                   \
+                \
+            case value_t::number_float:                                                                  \
+                return (lhs.m_data.m_value.number_float) op (rhs.m_data.m_value.number_float);                         \
+                \
+            case value_t::binary:                                                                        \
+                return (*lhs.m_data.m_value.binary) op (*rhs.m_data.m_value.binary);                                   \
+                \
+            case value_t::discarded:                                                                     \
+            default:                                                                                     \
+                return (unordered_result);                                                               \
+        }                                                                                                \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_float)                   \
+    {                                                                                                    \
+        return static_cast<number_float_t>(lhs.m_data.m_value.number_integer) op rhs.m_data.m_value.number_float;      \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_float && rhs_type == value_t::number_integer)                   \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_float op static_cast<number_float_t>(rhs.m_data.m_value.number_integer);      \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_float)                  \
+    {                                                                                                    \
+        return static_cast<number_float_t>(lhs.m_data.m_value.number_unsigned) op rhs.m_data.m_value.number_float;     \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_float && rhs_type == value_t::number_unsigned)                  \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_float op static_cast<number_float_t>(rhs.m_data.m_value.number_unsigned);     \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_integer)                \
+    {                                                                                                    \
+        return static_cast<number_integer_t>(lhs.m_data.m_value.number_unsigned) op rhs.m_data.m_value.number_integer; \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_unsigned)                \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_integer op static_cast<number_integer_t>(rhs.m_data.m_value.number_unsigned); \
+    }                                                                                                    \
+    else if(compares_unordered(lhs, rhs))\
+    {\
+        return (unordered_result);\
+    }\
+    \
+    return (default_result);
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // returns true if:
+    // - any operand is NaN and the other operand is of number type
+    // - any operand is discarded
+    // in legacy mode, discarded values are considered ordered if
+    // an operation is computed as an odd number of inverses of others
+    static bool compares_unordered(const_reference lhs, const_reference rhs, bool inverse = false) noexcept
+    {
+        if ((lhs.is_number_float() && std::isnan(lhs.m_data.m_value.number_float) && rhs.is_number())
+                || (rhs.is_number_float() && std::isnan(rhs.m_data.m_value.number_float) && lhs.is_number()))
+        {
+            return true;
+        }
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+        return (lhs.is_discarded() || rhs.is_discarded()) && !inverse;
+#else
+        static_cast<void>(inverse);
+        return lhs.is_discarded() || rhs.is_discarded();
+#endif
+    }
+
+  private:
+    bool compares_unordered(const_reference rhs, bool inverse = false) const noexcept
+    {
+        return compares_unordered(*this, rhs, inverse);
+    }
+
+  public:
+#if JSON_HAS_THREE_WAY_COMPARISON
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    bool operator==(const_reference rhs) const noexcept
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        const_reference lhs = *this;
+        JSON_IMPLEMENT_OPERATOR( ==, true, false, false)
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator==(ScalarType rhs) const noexcept
+    {
+        return *this == basic_json(rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    bool operator!=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !operator==(rhs);
+    }
+
+    /// @brief comparison: 3-way
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_spaceship/
+    std::partial_ordering operator<=>(const_reference rhs) const noexcept // *NOPAD*
+    {
+        const_reference lhs = *this;
+        // default_result is used if we cannot compare values. In that case,
+        // we compare types.
+        JSON_IMPLEMENT_OPERATOR(<=>, // *NOPAD*
+                                std::partial_ordering::equivalent,
+                                std::partial_ordering::unordered,
+                                lhs_type <=> rhs_type) // *NOPAD*
+    }
+
+    /// @brief comparison: 3-way
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_spaceship/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    std::partial_ordering operator<=>(ScalarType rhs) const noexcept // *NOPAD*
+    {
+        return *this <=> basic_json(rhs); // *NOPAD*
+    }
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    // all operators that are computed as an odd number of inverses of others
+    // need to be overloaded to emulate the legacy comparison behavior
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON)
+    bool operator<=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !(rhs < *this);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator<=(ScalarType rhs) const noexcept
+    {
+        return *this <= basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON)
+    bool operator>=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !(*this < rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator>=(ScalarType rhs) const noexcept
+    {
+        return *this >= basic_json(rhs);
+    }
+#endif
+#else
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    friend bool operator==(const_reference lhs, const_reference rhs) noexcept
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        JSON_IMPLEMENT_OPERATOR( ==, true, false, false)
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs == basic_json(rhs);
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) == rhs;
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    friend bool operator!=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(lhs == rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs != basic_json(rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) != rhs;
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    friend bool operator<(const_reference lhs, const_reference rhs) noexcept
+    {
+        // default_result is used if we cannot compare values. In that case,
+        // we compare types. Note we have to call the operator explicitly,
+        // because MSVC has problems otherwise.
+        JSON_IMPLEMENT_OPERATOR( <, false, false, operator<(lhs_type, rhs_type))
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs < basic_json(rhs);
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) < rhs;
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    friend bool operator<=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(rhs < lhs);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs <= basic_json(rhs);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) <= rhs;
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    friend bool operator>(const_reference lhs, const_reference rhs) noexcept
+    {
+        // double inverse
+        if (compares_unordered(lhs, rhs))
+        {
+            return false;
+        }
+        return !(lhs <= rhs);
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs > basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) > rhs;
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    friend bool operator>=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(lhs < rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs >= basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) >= rhs;
+    }
+#endif
+
+#undef JSON_IMPLEMENT_OPERATOR
+
+    /// @}
+
+    ///////////////////
+    // serialization //
+    ///////////////////
+
+    /// @name serialization
+    /// @{
+#ifndef JSON_NO_IO
+    /// @brief serialize to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const basic_json& j)
+    {
+        // read width member and use it as indentation parameter if nonzero
+        const bool pretty_print = o.width() > 0;
+        const auto indentation = pretty_print ? o.width() : 0;
+
+        // reset width to 0 for subsequent calls to this stream
+        o.width(0);
+
+        // do the actual serialization
+        serializer s(detail::output_adapter<char>(o), o.fill());
+        s.dump(j, pretty_print, false, static_cast<unsigned int>(indentation));
+        return o;
+    }
+
+    /// @brief serialize to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    /// @deprecated This function is deprecated since 3.0.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             operator<<(std::ostream&, const basic_json&) instead; that is,
+    ///             replace calls like `j >> o;` with `o << j;`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator<<(std::ostream&, const basic_json&))
+    friend std::ostream& operator>>(const basic_json& j, std::ostream& o)
+    {
+        return o << j;
+    }
+#endif  // JSON_NO_IO
+    /// @}
+
+    /////////////////////
+    // deserialization //
+    /////////////////////
+
+    /// @name deserialization
+    /// @{
+
+    /// @brief deserialize from a compatible input
+    /// @sa https://json.nlohmann.me/api/basic_json/parse/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(InputType&& i,
+                            parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::forward<InputType>(i)), std::move(cb), allow_exceptions, ignore_comments).parse(true, result); // cppcheck-suppress[accessMoved,accessForwarded]
+        return result;
+    }
+
+    /// @brief deserialize from a pair of character iterators
+    /// @sa https://json.nlohmann.me/api/basic_json/parse/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(IteratorType first,
+                            IteratorType last,
+                            parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::move(first), std::move(last)), std::move(cb), allow_exceptions, ignore_comments).parse(true, result); // cppcheck-suppress[accessMoved]
+        return result;
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, parse(ptr, ptr + len))
+    static basic_json parse(detail::span_input_adapter&& i,
+                            parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(i.get(), std::move(cb), allow_exceptions, ignore_comments).parse(true, result); // cppcheck-suppress[accessMoved]
+        return result;
+    }
+
+    /// @brief check if the input is valid JSON
+    /// @sa https://json.nlohmann.me/api/basic_json/accept/
+    template<typename InputType>
+    static bool accept(InputType&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::forward<InputType>(i)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /// @brief check if the input is valid JSON
+    /// @sa https://json.nlohmann.me/api/basic_json/accept/
+    template<typename IteratorType>
+    static bool accept(IteratorType first, IteratorType last,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::move(first), std::move(last)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, accept(ptr, ptr + len))
+    static bool accept(detail::span_input_adapter&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(i.get(), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    template <typename InputType, typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(InputType&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    template<class IteratorType, class SAX>
+    JSON_HEDLEY_NON_NULL(3)
+    static bool sax_parse(IteratorType first, IteratorType last, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    /// @deprecated This function is deprecated since 3.8.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             sax_parse(ptr, ptr + len) instead.
+    template <typename SAX>
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, sax_parse(ptr, ptr + len, ...))
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(detail::span_input_adapter&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = i.get();
+        return format == input_format_t::json
+               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+#ifndef JSON_NO_IO
+    /// @brief deserialize from stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
+    /// @deprecated This stream operator is deprecated since 3.0.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             operator>>(std::istream&, basic_json&) instead; that is,
+    ///             replace calls like `j << i;` with `i >> j;`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator>>(std::istream&, basic_json&))
+    friend std::istream& operator<<(basic_json& j, std::istream& i)
+    {
+        return operator>>(i, j);
+    }
+
+    /// @brief deserialize from stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
+    friend std::istream& operator>>(std::istream& i, basic_json& j)
+    {
+        parser(detail::input_adapter(i)).parse(false, j);
+        return i;
+    }
+#endif  // JSON_NO_IO
+    /// @}
+
+    ///////////////////////////
+    // convenience functions //
+    ///////////////////////////
+
+    /// @brief return the type as string
+    /// @sa https://json.nlohmann.me/api/basic_json/type_name/
+    JSON_HEDLEY_RETURNS_NON_NULL
+    const char* type_name() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+                return "null";
+            case value_t::object:
+                return "object";
+            case value_t::array:
+                return "array";
+            case value_t::string:
+                return "string";
+            case value_t::boolean:
+                return "boolean";
+            case value_t::binary:
+                return "binary";
+            case value_t::discarded:
+                return "discarded";
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            default:
+                return "number";
+        }
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    //////////////////////
+    // member variables //
+    //////////////////////
+
+    struct data
+    {
+        /// the type of the current element
+        value_t m_type = value_t::null;
+
+        /// the value of the current element
+        json_value m_value = {};
+
+        data(const value_t v)
+            : m_type(v), m_value(v)
+        {
+        }
+
+        data(size_type cnt, const basic_json& val)
+            : m_type(value_t::array)
+        {
+            m_value.array = create<array_t>(cnt, val);
+        }
+
+        data() noexcept = default;
+        data(data&&) noexcept = default;
+        data(const data&) noexcept = delete;
+        data& operator=(data&&) noexcept = delete;
+        data& operator=(const data&) noexcept = delete;
+
+        ~data() noexcept
+        {
+            m_value.destroy(m_type);
+        }
+    };
+
+    data m_data = {};
+
+#if JSON_DIAGNOSTICS
+    /// a pointer to a parent value (for debugging purposes)
+    basic_json* m_parent = nullptr;
+#endif
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    /// the start position of the value
+    std::size_t start_position = std::string::npos;
+    /// the end position of the value
+    std::size_t end_position = std::string::npos;
+  public:
+    constexpr std::size_t start_pos() const noexcept
+    {
+        return start_position;
+    }
+
+    constexpr std::size_t end_pos() const noexcept
+    {
+        return end_position;
+    }
+#endif
+
+    //////////////////////////////////////////
+    // binary serialization/deserialization //
+    //////////////////////////////////////////
+
+    /// @name binary serialization/deserialization support
+    /// @{
+
+  public:
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static std::vector<std::uint8_t> to_cbor(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_cbor(j, result);
+        return result;
+    }
+
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static void to_cbor(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_cbor(j);
+    }
+
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static void to_cbor(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_cbor(j);
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static std::vector<std::uint8_t> to_msgpack(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_msgpack(j, result);
+        return result;
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static void to_msgpack(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_msgpack(j);
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static void to_msgpack(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_msgpack(j);
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static std::vector<std::uint8_t> to_ubjson(const basic_json& j,
+            const bool use_size = false,
+            const bool use_type = false)
+    {
+        std::vector<std::uint8_t> result;
+        to_ubjson(j, result, use_size, use_type);
+        return result;
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static void to_ubjson(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static void to_ubjson(const basic_json& j, detail::output_adapter<char> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<char>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static std::vector<std::uint8_t> to_bjdata(const basic_json& j,
+            const bool use_size = false,
+            const bool use_type = false)
+    {
+        std::vector<std::uint8_t> result;
+        to_bjdata(j, result, use_size, use_type);
+        return result;
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static void to_bjdata(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type, true, true);
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static void to_bjdata(const basic_json& j, detail::output_adapter<char> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<char>(o).write_ubjson(j, use_size, use_type, true, true);
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static std::vector<std::uint8_t> to_bson(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_bson(j, result);
+        return result;
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static void to_bson(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_bson(j);
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static void to_bson(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_bson(j);
+    }
+
+    /// @brief create a JSON value from an input in CBOR format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in CBOR format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        return from_cbor(ptr, ptr + len, strict, allow_exceptions, tag_handler);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        auto ia = i.get();
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in MessagePack format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(InputType&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in MessagePack format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(IteratorType first, IteratorType last,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(const T* ptr, std::size_t len,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        return from_msgpack(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(detail::span_input_adapter&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = i.get();
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in UBJSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(InputType&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in UBJSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(IteratorType first, IteratorType last,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(const T* ptr, std::size_t len,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        return from_ubjson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(detail::span_input_adapter&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = i.get();
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BJData format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bjdata/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bjdata(InputType&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bjdata).sax_parse(input_format_t::bjdata, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BJData format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bjdata/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bjdata(IteratorType first, IteratorType last,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bjdata).sax_parse(input_format_t::bjdata, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        return from_bson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = i.get();
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+    /// @}
+
+    //////////////////////////
+    // JSON Pointer support //
+    //////////////////////////
+
+    /// @name JSON Pointer functions
+    /// @{
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](const json_pointer& ptr)
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    reference operator[](const ::nlohmann::json_pointer<BasicJsonType>& ptr)
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](const json_pointer& ptr) const
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    const_reference operator[](const ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(const json_pointer& ptr)
+    {
+        return ptr.get_checked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    reference at(const ::nlohmann::json_pointer<BasicJsonType>& ptr)
+    {
+        return ptr.get_checked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(const json_pointer& ptr) const
+    {
+        return ptr.get_checked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    const_reference at(const ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.get_checked(this);
+    }
+
+    /// @brief return flattened JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/flatten/
+    basic_json flatten() const
+    {
+        basic_json result(value_t::object);
+        json_pointer::flatten("", *this, result);
+        return result;
+    }
+
+    /// @brief unflatten a previously flattened JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/unflatten/
+    basic_json unflatten() const
+    {
+        return json_pointer::unflatten(*this);
+    }
+
+    /// @}
+
+    //////////////////////////
+    // JSON Patch functions //
+    //////////////////////////
+
+    /// @name JSON Patch functions
+    /// @{
+
+    /// @brief applies a JSON patch in-place without copying the object
+    /// @sa https://json.nlohmann.me/api/basic_json/patch/
+    void patch_inplace(const basic_json& json_patch)
+    {
+        basic_json& result = *this;
+        // the valid JSON Patch operations
+        enum class patch_operations {add, remove, replace, move, copy, test, invalid};
+
+        const auto get_op = [](const string_t& op)
+        {
+            if (op == "add")
+            {
+                return patch_operations::add;
+            }
+            if (op == "remove")
+            {
+                return patch_operations::remove;
+            }
+            if (op == "replace")
+            {
+                return patch_operations::replace;
+            }
+            if (op == "move")
+            {
+                return patch_operations::move;
+            }
+            if (op == "copy")
+            {
+                return patch_operations::copy;
+            }
+            if (op == "test")
+            {
+                return patch_operations::test;
+            }
+
+            return patch_operations::invalid;
+        };
+
+        // wrapper for "add" operation; add value at ptr
+        const auto operation_add = [&result](json_pointer & ptr, const basic_json & val)
+        {
+            // adding to the root of the target document means replacing it
+            if (ptr.empty())
+            {
+                result = val;
+                return;
+            }
+
+            // make sure the top element of the pointer exists
+            json_pointer const top_pointer = ptr.top();
+            if (top_pointer != ptr)
+            {
+                result.at(top_pointer);
+            }
+
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            // parent must exist when performing patch add per RFC6902 specs
+            basic_json& parent = result.at(ptr);
+
+            switch (parent.m_data.m_type)
+            {
+                case value_t::null:
+                case value_t::object:
+                {
+                    // use operator[] to add value
+                    parent[last_path] = val;
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    if (last_path == "-")
+                    {
+                        // special case: append to back
+                        parent.push_back(val);
+                    }
+                    else
+                    {
+                        const auto idx = json_pointer::template array_index<basic_json_t>(last_path);
+                        if (JSON_HEDLEY_UNLIKELY(idx > parent.size()))
+                        {
+                            // avoid undefined behavior
+                            JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), &parent));
+                        }
+
+                        // default case: insert add offset
+                        parent.insert(parent.begin() + static_cast<difference_type>(idx), val);
+                    }
+                    break;
+                }
+
+                // if there exists a parent it cannot be primitive
+                case value_t::string: // LCOV_EXCL_LINE
+                case value_t::boolean: // LCOV_EXCL_LINE
+                case value_t::number_integer: // LCOV_EXCL_LINE
+                case value_t::number_unsigned: // LCOV_EXCL_LINE
+                case value_t::number_float: // LCOV_EXCL_LINE
+                case value_t::binary: // LCOV_EXCL_LINE
+                case value_t::discarded: // LCOV_EXCL_LINE
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            }
+        };
+
+        // wrapper for "remove" operation; remove value at ptr
+        const auto operation_remove = [this, & result](json_pointer & ptr)
+        {
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            basic_json& parent = result.at(ptr);
+
+            // remove child
+            if (parent.is_object())
+            {
+                // perform range check
+                auto it = parent.find(last_path);
+                if (JSON_HEDLEY_LIKELY(it != parent.end()))
+                {
+                    parent.erase(it);
+                }
+                else
+                {
+                    JSON_THROW(out_of_range::create(403, detail::concat("key '", last_path, "' not found"), this));
+                }
+            }
+            else if (parent.is_array())
+            {
+                // note erase performs range check
+                parent.erase(json_pointer::template array_index<basic_json_t>(last_path));
+            }
+        };
+
+        // type check: top level value must be an array
+        if (JSON_HEDLEY_UNLIKELY(!json_patch.is_array()))
+        {
+            JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", &json_patch));
+        }
+
+        // iterate and apply the operations
+        for (const auto& val : json_patch)
+        {
+            // wrapper to get a value for an operation
+            const auto get_value = [&val](const string_t& op,
+                                          const string_t& member,
+                                          bool string_type) -> basic_json &
+            {
+                // find value
+                auto it = val.m_data.m_value.object->find(member);
+
+                // context-sensitive error message
+                const auto error_msg = (op == "op") ? "operation" : detail::concat("operation '", op, '\''); // NOLINT(bugprone-unused-local-non-trivial-variable)
+
+                // check if desired value is present
+                if (JSON_HEDLEY_UNLIKELY(it == val.m_data.m_value.object->end()))
+                {
+                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
+                    JSON_THROW(parse_error::create(105, 0, detail::concat(error_msg, " must have member '", member, "'"), &val));
+                }
+
+                // check if result is of type string
+                if (JSON_HEDLEY_UNLIKELY(string_type && !it->second.is_string()))
+                {
+                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
+                    JSON_THROW(parse_error::create(105, 0, detail::concat(error_msg, " must have string member '", member, "'"), &val));
+                }
+
+                // no error: return value
+                return it->second;
+            };
+
+            // type check: every element of the array must be an object
+            if (JSON_HEDLEY_UNLIKELY(!val.is_object()))
+            {
+                JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", &val));
+            }
+
+            // collect mandatory members
+            const auto op = get_value("op", "op", true).template get<string_t>();
+            const auto path = get_value(op, "path", true).template get<string_t>();
+            json_pointer ptr(path);
+
+            switch (get_op(op))
+            {
+                case patch_operations::add:
+                {
+                    operation_add(ptr, get_value("add", "value", false));
+                    break;
+                }
+
+                case patch_operations::remove:
+                {
+                    operation_remove(ptr);
+                    break;
+                }
+
+                case patch_operations::replace:
+                {
+                    // the "path" location must exist - use at()
+                    result.at(ptr) = get_value("replace", "value", false);
+                    break;
+                }
+
+                case patch_operations::move:
+                {
+                    const auto from_path = get_value("move", "from", true).template get<string_t>();
+                    json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json const v = result.at(from_ptr);
+
+                    // The move operation is functionally identical to a
+                    // "remove" operation on the "from" location, followed
+                    // immediately by an "add" operation at the target
+                    // location with the value that was just removed.
+                    operation_remove(from_ptr);
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::copy:
+                {
+                    const auto from_path = get_value("copy", "from", true).template get<string_t>();
+                    const json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json const v = result.at(from_ptr);
+
+                    // The copy is functionally identical to an "add"
+                    // operation at the target location using the value
+                    // specified in the "from" member.
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::test:
+                {
+                    bool success = false;
+                    JSON_TRY
+                    {
+                        // check if "value" matches the one at "path"
+                        // the "path" location must exist - use at()
+                        success = (result.at(ptr) == get_value("test", "value", false));
+                    }
+                    JSON_INTERNAL_CATCH (out_of_range&)
+                    {
+                        // ignore out of range errors: success remains false
+                    }
+
+                    // throw an exception if test fails
+                    if (JSON_HEDLEY_UNLIKELY(!success))
+                    {
+                        JSON_THROW(other_error::create(501, detail::concat("unsuccessful: ", val.dump()), &val));
+                    }
+
+                    break;
+                }
+
+                case patch_operations::invalid:
+                default:
+                {
+                    // op must be "add", "remove", "replace", "move", "copy", or
+                    // "test"
+                    JSON_THROW(parse_error::create(105, 0, detail::concat("operation value '", op, "' is invalid"), &val));
+                }
+            }
+        }
+    }
+
+    /// @brief applies a JSON patch to a copy of the current object
+    /// @sa https://json.nlohmann.me/api/basic_json/patch/
+    basic_json patch(const basic_json& json_patch) const
+    {
+        basic_json result = *this;
+        result.patch_inplace(json_patch);
+        return result;
+    }
+
+    /// @brief creates a diff as a JSON patch
+    /// @sa https://json.nlohmann.me/api/basic_json/diff/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json diff(const basic_json& source, const basic_json& target,
+                           const string_t& path = "")
+    {
+        // the patch
+        basic_json result(value_t::array);
+
+        // if the values are the same, return empty patch
+        if (source == target)
+        {
+            return result;
+        }
+
+        if (source.type() != target.type())
+        {
+            // different types: replace value
+            result.push_back(
+            {
+                {"op", "replace"}, {"path", path}, {"value", target}
+            });
+            return result;
+        }
+
+        switch (source.type())
+        {
+            case value_t::array:
+            {
+                // first pass: traverse common elements
+                std::size_t i = 0;
+                while (i < source.size() && i < target.size())
+                {
+                    // recursive call to compare array values at index i
+                    auto temp_diff = diff(source[i], target[i], detail::concat<string_t>(path, '/', detail::to_string<string_t>(i)));
+                    result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    ++i;
+                }
+
+                // We now reached the end of at least one array
+                // in a second pass, traverse the remaining elements
+
+                // remove my remaining elements
+                const auto end_index = static_cast<difference_type>(result.size());
+                while (i < source.size())
+                {
+                    // add operations in reverse order to avoid invalid
+                    // indices
+                    result.insert(result.begin() + end_index, object(
+                    {
+                        {"op", "remove"},
+                        {"path", detail::concat<string_t>(path, '/', detail::to_string<string_t>(i))}
+                    }));
+                    ++i;
+                }
+
+                // add other remaining elements
+                while (i < target.size())
+                {
+                    result.push_back(
+                    {
+                        {"op", "add"},
+                        {"path", detail::concat<string_t>(path, "/-")},
+                        {"value", target[i]}
+                    });
+                    ++i;
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // first pass: traverse this object's elements
+                for (auto it = source.cbegin(); it != source.cend(); ++it)
+                {
+                    // escape the key name to be used in a JSON patch
+                    const auto path_key = detail::concat<string_t>(path, '/', detail::escape(it.key()));
+
+                    if (target.find(it.key()) != target.end())
+                    {
+                        // recursive call to compare object values at key it
+                        auto temp_diff = diff(it.value(), target[it.key()], path_key);
+                        result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    }
+                    else
+                    {
+                        // found a key that is not in o -> remove it
+                        result.push_back(object(
+                        {
+                            {"op", "remove"}, {"path", path_key}
+                        }));
+                    }
+                }
+
+                // second pass: traverse other object's elements
+                for (auto it = target.cbegin(); it != target.cend(); ++it)
+                {
+                    if (source.find(it.key()) == source.end())
+                    {
+                        // found a key that is not in this -> add it
+                        const auto path_key = detail::concat<string_t>(path, '/', detail::escape(it.key()));
+                        result.push_back(
+                        {
+                            {"op", "add"}, {"path", path_key},
+                            {"value", it.value()}
+                        });
+                    }
+                }
+
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // both primitive type: replace value
+                result.push_back(
+                {
+                    {"op", "replace"}, {"path", path}, {"value", target}
+                });
+                break;
+            }
+        }
+
+        return result;
+    }
+    /// @}
+
+    ////////////////////////////////
+    // JSON Merge Patch functions //
+    ////////////////////////////////
+
+    /// @name JSON Merge Patch functions
+    /// @{
+
+    /// @brief applies a JSON Merge Patch
+    /// @sa https://json.nlohmann.me/api/basic_json/merge_patch/
+    void merge_patch(const basic_json& apply_patch)
+    {
+        if (apply_patch.is_object())
+        {
+            if (!is_object())
+            {
+                *this = object();
+            }
+            for (auto it = apply_patch.begin(); it != apply_patch.end(); ++it)
+            {
+                if (it.value().is_null())
+                {
+                    erase(it.key());
+                }
+                else
+                {
+                    operator[](it.key()).merge_patch(it.value());
+                }
+            }
+        }
+        else
+        {
+            *this = apply_patch;
+        }
+    }
+
+    /// @}
+};
+
+/// @brief user-defined to_string function for JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/to_string/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+std::string to_string(const NLOHMANN_BASIC_JSON_TPL& j)
+{
+    return j.dump();
+}
+
+inline namespace literals
+{
+inline namespace json_literals
+{
+
+/// @brief user-defined string literal for JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json/
+JSON_HEDLEY_NON_NULL(1)
+#if !defined(JSON_HEDLEY_GCC_VERSION) || JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0)
+    inline nlohmann::json operator ""_json(const char* s, std::size_t n)
+#else
+    inline nlohmann::json operator "" _json(const char* s, std::size_t n)
+#endif
+{
+    return nlohmann::json::parse(s, s + n);
+}
+
+/// @brief user-defined string literal for JSON pointer
+/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json_pointer/
+JSON_HEDLEY_NON_NULL(1)
+#if !defined(JSON_HEDLEY_GCC_VERSION) || JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0)
+    inline nlohmann::json::json_pointer operator ""_json_pointer(const char* s, std::size_t n)
+#else
+    inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
+#endif
+{
+    return nlohmann::json::json_pointer(std::string(s, n));
+}
+
+}  // namespace json_literals
+}  // namespace literals
+NLOHMANN_JSON_NAMESPACE_END
+
+///////////////////////
+// nonmember support //
+///////////////////////
+
+namespace std // NOLINT(cert-dcl58-cpp)
+{
+
+/// @brief hash value for JSON objects
+/// @sa https://json.nlohmann.me/api/basic_json/std_hash/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct hash<nlohmann::NLOHMANN_BASIC_JSON_TPL> // NOLINT(cert-dcl58-cpp)
+{
+    std::size_t operator()(const nlohmann::NLOHMANN_BASIC_JSON_TPL& j) const
+    {
+        return nlohmann::detail::hash(j);
+    }
+};
+
+// specialization for std::less<value_t>
+template<>
+struct less< ::nlohmann::detail::value_t> // do not remove the space after '<', see https://github.com/nlohmann/json/pull/679
+{
+    /*!
+    @brief compare two value_t enum values
+    @since version 3.0.0
+    */
+    bool operator()(::nlohmann::detail::value_t lhs,
+                    ::nlohmann::detail::value_t rhs) const noexcept
+    {
+#if JSON_HAS_THREE_WAY_COMPARISON
+        return std::is_lt(lhs <=> rhs); // *NOPAD*
+#else
+        return ::nlohmann::detail::operator<(lhs, rhs);
+#endif
+    }
+};
+
+// C++20 prohibit function specialization in the std namespace.
+#ifndef JSON_HAS_CPP_20
+
+/// @brief exchanges the values of two JSON objects
+/// @sa https://json.nlohmann.me/api/basic_json/std_swap/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC_JSON_TPL& j2) noexcept(  // NOLINT(readability-inconsistent-declaration-parameter-name, cert-dcl58-cpp)
+    is_nothrow_move_constructible<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value&&                          // NOLINT(misc-redundant-expression,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    is_nothrow_move_assignable<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value)
+{
+    j1.swap(j2);
+}
+
+#endif
+
+}  // namespace std
+
+#if JSON_USE_GLOBAL_UDLS
+    #if !defined(JSON_HEDLEY_GCC_VERSION) || JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0)
+        using nlohmann::literals::json_literals::operator ""_json; // NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+        using nlohmann::literals::json_literals::operator ""_json_pointer; //NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+    #else
+        using nlohmann::literals::json_literals::operator "" _json; // NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+        using nlohmann::literals::json_literals::operator "" _json_pointer; //NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+    #endif
+#endif
+
+#include <nlohmann/detail/macro_unscope.hpp>
+
+#endif  // INCLUDE_NLOHMANN_JSON_HPP_
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/json_fwd.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/json_fwd.hpp
new file mode 100644
index 00000000..d796cfd7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/json_fwd.hpp
@@ -0,0 +1,75 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
+#define INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+#include <cstdint> // int64_t, uint64_t
+#include <map> // map
+#include <memory> // allocator
+#include <string> // string
+#include <vector> // vector
+
+#include <nlohmann/detail/abi_macros.hpp>
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/*!
+@brief default JSONSerializer template argument
+
+This serializer ignores the template arguments and uses ADL
+([argument-dependent lookup](https://en.cppreference.com/w/cpp/language/adl))
+for serialization.
+*/
+template<typename T = void, typename SFINAE = void>
+struct adl_serializer;
+
+/// a class to store JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/
+template<template<typename U, typename V, typename... Args> class ObjectType =
+         std::map,
+         template<typename U, typename... Args> class ArrayType = std::vector,
+         class StringType = std::string, class BooleanType = bool,
+         class NumberIntegerType = std::int64_t,
+         class NumberUnsignedType = std::uint64_t,
+         class NumberFloatType = double,
+         template<typename U> class AllocatorType = std::allocator,
+         template<typename T, typename SFINAE = void> class JSONSerializer =
+         adl_serializer,
+         class BinaryType = std::vector<std::uint8_t>, // cppcheck-suppress syntaxError
+         class CustomBaseClass = void>
+class basic_json;
+
+/// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+/// @sa https://json.nlohmann.me/api/json_pointer/
+template<typename RefStringType>
+class json_pointer;
+
+/*!
+@brief default specialization
+@sa https://json.nlohmann.me/api/json/
+*/
+using json = basic_json<>;
+
+/// @brief a minimal map-like container that preserves insertion order
+/// @sa https://json.nlohmann.me/api/ordered_map/
+template<class Key, class T, class IgnoredLess, class Allocator>
+struct ordered_map;
+
+/// @brief specialization that maintains the insertion order of object keys
+/// @sa https://json.nlohmann.me/api/ordered_json/
+using ordered_json = basic_json<nlohmann::ordered_map>;
+
+NLOHMANN_JSON_NAMESPACE_END
+
+#endif  // INCLUDE_NLOHMANN_JSON_FWD_HPP_
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/ordered_map.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/ordered_map.hpp
new file mode 100644
index 00000000..3b116b16
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/ordered_map.hpp
@@ -0,0 +1,359 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <functional> // equal_to, less
+#include <initializer_list> // initializer_list
+#include <iterator> // input_iterator_tag, iterator_traits
+#include <memory> // allocator
+#include <stdexcept> // for out_of_range
+#include <type_traits> // enable_if, is_convertible
+#include <utility> // pair
+#include <vector> // vector
+
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/type_traits.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// ordered_map: a minimal map-like container that preserves insertion order
+/// for use within nlohmann::basic_json<ordered_map>
+template <class Key, class T, class IgnoredLess = std::less<Key>,
+          class Allocator = std::allocator<std::pair<const Key, T>>>
+                  struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>
+{
+    using key_type = Key;
+    using mapped_type = T;
+    using Container = std::vector<std::pair<const Key, T>, Allocator>;
+    using iterator = typename Container::iterator;
+    using const_iterator = typename Container::const_iterator;
+    using size_type = typename Container::size_type;
+    using value_type = typename Container::value_type;
+#ifdef JSON_HAS_CPP_14
+    using key_compare = std::equal_to<>;
+#else
+    using key_compare = std::equal_to<Key>;
+#endif
+
+    // Explicit constructors instead of `using Container::Container`
+    // otherwise older compilers choke on it (GCC <= 5.5, xcode <= 9.4)
+    ordered_map() noexcept(noexcept(Container())) : Container{} {}
+    explicit ordered_map(const Allocator& alloc) noexcept(noexcept(Container(alloc))) : Container{alloc} {}
+    template <class It>
+    ordered_map(It first, It last, const Allocator& alloc = Allocator())
+        : Container{first, last, alloc} {}
+    ordered_map(std::initializer_list<value_type> init, const Allocator& alloc = Allocator() )
+        : Container{init, alloc} {}
+
+    std::pair<iterator, bool> emplace(const key_type& key, T&& t)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return {it, false};
+            }
+        }
+        Container::emplace_back(key, std::forward<T>(t));
+        return {std::prev(this->end()), true};
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    std::pair<iterator, bool> emplace(KeyType && key, T && t)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return {it, false};
+            }
+        }
+        Container::emplace_back(std::forward<KeyType>(key), std::forward<T>(t));
+        return {std::prev(this->end()), true};
+    }
+
+    T& operator[](const key_type& key)
+    {
+        return emplace(key, T{}).first->second;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    T & operator[](KeyType && key)
+    {
+        return emplace(std::forward<KeyType>(key), T{}).first->second;
+    }
+
+    const T& operator[](const key_type& key) const
+    {
+        return at(key);
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    const T & operator[](KeyType && key) const
+    {
+        return at(std::forward<KeyType>(key));
+    }
+
+    T& at(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    T & at(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    const T& at(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    const T & at(KeyType && key) const // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    size_type erase(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                // Since we cannot move const Keys, re-construct them in place
+                for (auto next = it; ++next != this->end(); ++it)
+                {
+                    it->~value_type(); // Destroy but keep allocation
+                    new (&*it) value_type{std::move(*next)};
+                }
+                Container::pop_back();
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    size_type erase(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                // Since we cannot move const Keys, re-construct them in place
+                for (auto next = it; ++next != this->end(); ++it)
+                {
+                    it->~value_type(); // Destroy but keep allocation
+                    new (&*it) value_type{std::move(*next)};
+                }
+                Container::pop_back();
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator erase(iterator pos)
+    {
+        return erase(pos, std::next(pos));
+    }
+
+    iterator erase(iterator first, iterator last)
+    {
+        if (first == last)
+        {
+            return first;
+        }
+
+        const auto elements_affected = std::distance(first, last);
+        const auto offset = std::distance(Container::begin(), first);
+
+        // This is the start situation. We need to delete elements_affected
+        // elements (3 in this example: e, f, g), and need to return an
+        // iterator past the last deleted element (h in this example).
+        // Note that offset is the distance from the start of the vector
+        // to first. We will need this later.
+
+        // [ a, b, c, d, e, f, g, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // Since we cannot move const Keys, we re-construct them in place.
+        // We start at first and re-construct (viz. copy) the elements from
+        // the back of the vector. Example for first iteration:
+
+        //               ,--------.
+        //               v        |   destroy e and re-construct with h
+        // [ a, b, c, d, e, f, g, h, i, j ]
+        //               ^        ^
+        //               it       it + elements_affected
+
+        for (auto it = first; std::next(it, elements_affected) != Container::end(); ++it)
+        {
+            it->~value_type(); // destroy but keep allocation
+            new (&*it) value_type{std::move(*std::next(it, elements_affected))}; // "move" next element to it
+        }
+
+        // [ a, b, c, d, h, i, j, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // remove the unneeded elements at the end of the vector
+        Container::resize(this->size() - static_cast<size_type>(elements_affected));
+
+        // [ a, b, c, d, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // first is now pointing past the last deleted element, but we cannot
+        // use this iterator, because it may have been invalidated by the
+        // resize call. Instead, we can return begin() + offset.
+        return Container::begin() + offset;
+    }
+
+    size_type count(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    size_type count(KeyType && key) const // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator find(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    iterator find(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    const_iterator find(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    std::pair<iterator, bool> insert( value_type&& value )
+    {
+        return emplace(value.first, std::move(value.second));
+    }
+
+    std::pair<iterator, bool> insert( const value_type& value )
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, value.first))
+            {
+                return {it, false};
+            }
+        }
+        Container::push_back(value);
+        return {--this->end(), true};
+    }
+
+    template<typename InputIt>
+    using require_input_iter = typename std::enable_if<std::is_convertible<typename std::iterator_traits<InputIt>::iterator_category,
+            std::input_iterator_tag>::value>::type;
+
+    template<typename InputIt, typename = require_input_iter<InputIt>>
+    void insert(InputIt first, InputIt last)
+    {
+        for (auto it = first; it != last; ++it)
+        {
+            insert(*it);
+        }
+    }
+
+private:
+    JSON_NO_UNIQUE_ADDRESS key_compare m_compare = key_compare();
+};
+
+NLOHMANN_JSON_NAMESPACE_END
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/thirdparty/hedley/hedley.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/thirdparty/hedley/hedley.hpp
new file mode 100644
index 00000000..4e4ef888
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/thirdparty/hedley/hedley.hpp
@@ -0,0 +1,2045 @@
+#pragma once
+
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2016 - 2021 Evan Nemerson <evan@nemerson.com>
+// SPDX-License-Identifier: MIT
+
+/* Hedley - https://nemequ.github.io/hedley
+ * Created by Evan Nemerson <evan@nemerson.com>
+ */
+
+#if !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < 15)
+#if defined(JSON_HEDLEY_VERSION)
+    #undef JSON_HEDLEY_VERSION
+#endif
+#define JSON_HEDLEY_VERSION 15
+
+#if defined(JSON_HEDLEY_STRINGIFY_EX)
+    #undef JSON_HEDLEY_STRINGIFY_EX
+#endif
+#define JSON_HEDLEY_STRINGIFY_EX(x) #x
+
+#if defined(JSON_HEDLEY_STRINGIFY)
+    #undef JSON_HEDLEY_STRINGIFY
+#endif
+#define JSON_HEDLEY_STRINGIFY(x) JSON_HEDLEY_STRINGIFY_EX(x)
+
+#if defined(JSON_HEDLEY_CONCAT_EX)
+    #undef JSON_HEDLEY_CONCAT_EX
+#endif
+#define JSON_HEDLEY_CONCAT_EX(a,b) a##b
+
+#if defined(JSON_HEDLEY_CONCAT)
+    #undef JSON_HEDLEY_CONCAT
+#endif
+#define JSON_HEDLEY_CONCAT(a,b) JSON_HEDLEY_CONCAT_EX(a,b)
+
+#if defined(JSON_HEDLEY_CONCAT3_EX)
+    #undef JSON_HEDLEY_CONCAT3_EX
+#endif
+#define JSON_HEDLEY_CONCAT3_EX(a,b,c) a##b##c
+
+#if defined(JSON_HEDLEY_CONCAT3)
+    #undef JSON_HEDLEY_CONCAT3
+#endif
+#define JSON_HEDLEY_CONCAT3(a,b,c) JSON_HEDLEY_CONCAT3_EX(a,b,c)
+
+#if defined(JSON_HEDLEY_VERSION_ENCODE)
+    #undef JSON_HEDLEY_VERSION_ENCODE
+#endif
+#define JSON_HEDLEY_VERSION_ENCODE(major,minor,revision) (((major) * 1000000) + ((minor) * 1000) + (revision))
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MAJOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MAJOR(version) ((version) / 1000000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MINOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MINOR(version) (((version) % 1000000) / 1000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_REVISION)
+    #undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_REVISION(version) ((version) % 1000)
+
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #undef JSON_HEDLEY_GNUC_VERSION
+#endif
+#if defined(__GNUC__) && defined(__GNUC_PATCHLEVEL__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
+#elif defined(__GNUC__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, 0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GNUC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION)
+    #undef JSON_HEDLEY_MSVC_VERSION
+#endif
+#if defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 140000000) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 10000000, (_MSC_FULL_VER % 10000000) / 100000, (_MSC_FULL_VER % 100000) / 100)
+#elif defined(_MSC_FULL_VER) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 1000000, (_MSC_FULL_VER % 1000000) / 10000, (_MSC_FULL_VER % 10000) / 10)
+#elif defined(_MSC_VER) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_VER / 100, _MSC_VER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#endif
+#if !defined(JSON_HEDLEY_MSVC_VERSION)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (0)
+#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 10000000) + (minor * 100000) + (patch)))
+#elif defined(_MSC_VER) && (_MSC_VER >= 1200)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 1000000) + (minor * 10000) + (patch)))
+#else
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_VER >= ((major * 100) + (minor)))
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #undef JSON_HEDLEY_INTEL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && !defined(__ICL)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, __INTEL_COMPILER_UPDATE)
+#elif defined(__INTEL_COMPILER) && !defined(__ICL)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
+    #undef JSON_HEDLEY_INTEL_CL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && defined(__ICL)
+    #define JSON_HEDLEY_INTEL_CL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER, __INTEL_COMPILER_UPDATE, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
+    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_CL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #undef JSON_HEDLEY_PGI_VERSION
+#endif
+#if defined(__PGI) && defined(__PGIC__) && defined(__PGIC_MINOR__) && defined(__PGIC_PATCHLEVEL__)
+    #define JSON_HEDLEY_PGI_VERSION JSON_HEDLEY_VERSION_ENCODE(__PGIC__, __PGIC_MINOR__, __PGIC_PATCHLEVEL__)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION_CHECK)
+    #undef JSON_HEDLEY_PGI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PGI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #undef JSON_HEDLEY_SUNPRO_VERSION
+#endif
+#if defined(__SUNPRO_C) && (__SUNPRO_C > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_C >> 16) & 0xf) * 10) + ((__SUNPRO_C >> 12) & 0xf), (((__SUNPRO_C >> 8) & 0xf) * 10) + ((__SUNPRO_C >> 4) & 0xf), (__SUNPRO_C & 0xf) * 10)
+#elif defined(__SUNPRO_C)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_C >> 8) & 0xf, (__SUNPRO_C >> 4) & 0xf, (__SUNPRO_C) & 0xf)
+#elif defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_CC >> 16) & 0xf) * 10) + ((__SUNPRO_CC >> 12) & 0xf), (((__SUNPRO_CC >> 8) & 0xf) * 10) + ((__SUNPRO_CC >> 4) & 0xf), (__SUNPRO_CC & 0xf) * 10)
+#elif defined(__SUNPRO_CC)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_CC >> 8) & 0xf, (__SUNPRO_CC >> 4) & 0xf, (__SUNPRO_CC) & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION_CHECK)
+    #undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_SUNPRO_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#endif
+#if defined(__EMSCRIPTEN__)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION JSON_HEDLEY_VERSION_ENCODE(__EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_EMSCRIPTEN_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #undef JSON_HEDLEY_ARM_VERSION
+#endif
+#if defined(__CC_ARM) && defined(__ARMCOMPILER_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCOMPILER_VERSION / 1000000, (__ARMCOMPILER_VERSION % 1000000) / 10000, (__ARMCOMPILER_VERSION % 10000) / 100)
+#elif defined(__CC_ARM) && defined(__ARMCC_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCC_VERSION / 1000000, (__ARMCC_VERSION % 1000000) / 10000, (__ARMCC_VERSION % 10000) / 100)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION_CHECK)
+    #undef JSON_HEDLEY_ARM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_ARM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #undef JSON_HEDLEY_IBM_VERSION
+#endif
+#if defined(__ibmxl__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ibmxl_version__, __ibmxl_release__, __ibmxl_modification__)
+#elif defined(__xlC__) && defined(__xlC_ver__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, (__xlC_ver__ >> 8) & 0xff)
+#elif defined(__xlC__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, 0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION_CHECK)
+    #undef JSON_HEDLEY_IBM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IBM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #undef JSON_HEDLEY_TI_VERSION
+#endif
+#if \
+    defined(__TI_COMPILER_VERSION__) && \
+    ( \
+      defined(__TMS470__) || defined(__TI_ARM__) || \
+      defined(__MSP430__) || \
+      defined(__TMS320C2000__) \
+    )
+#if (__TI_COMPILER_VERSION__ >= 16000000)
+    #define JSON_HEDLEY_TI_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C2000__)
+    #define JSON_HEDLEY_TI_CL2000_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL2000_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #undef JSON_HEDLEY_TI_CL430_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__MSP430__)
+    #define JSON_HEDLEY_TI_CL430_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL430_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && (defined(__TMS470__) || defined(__TI_ARM__))
+    #define JSON_HEDLEY_TI_ARMCL_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_ARMCL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C6X__)
+    #define JSON_HEDLEY_TI_CL6X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL6X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__C7000__)
+    #define JSON_HEDLEY_TI_CL7X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL7X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__PRU__)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CLPRU_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #undef JSON_HEDLEY_CRAY_VERSION
+#endif
+#if defined(_CRAYC)
+    #if defined(_RELEASE_PATCHLEVEL)
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, _RELEASE_PATCHLEVEL)
+    #else
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION_CHECK)
+    #undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_CRAY_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #undef JSON_HEDLEY_IAR_VERSION
+#endif
+#if defined(__IAR_SYSTEMS_ICC__)
+    #if __VER__ > 1000
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE((__VER__ / 1000000), ((__VER__ / 1000) % 1000), (__VER__ % 1000))
+    #else
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE(__VER__ / 100, __VER__ % 100, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION_CHECK)
+    #undef JSON_HEDLEY_IAR_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IAR_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #undef JSON_HEDLEY_TINYC_VERSION
+#endif
+#if defined(__TINYC__)
+    #define JSON_HEDLEY_TINYC_VERSION JSON_HEDLEY_VERSION_ENCODE(__TINYC__ / 1000, (__TINYC__ / 100) % 10, __TINYC__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION_CHECK)
+    #undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TINYC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #undef JSON_HEDLEY_DMC_VERSION
+#endif
+#if defined(__DMC__)
+    #define JSON_HEDLEY_DMC_VERSION JSON_HEDLEY_VERSION_ENCODE(__DMC__ >> 8, (__DMC__ >> 4) & 0xf, __DMC__ & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION_CHECK)
+    #undef JSON_HEDLEY_DMC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_DMC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #undef JSON_HEDLEY_COMPCERT_VERSION
+#endif
+#if defined(__COMPCERT_VERSION__)
+    #define JSON_HEDLEY_COMPCERT_VERSION JSON_HEDLEY_VERSION_ENCODE(__COMPCERT_VERSION__ / 10000, (__COMPCERT_VERSION__ / 100) % 100, __COMPCERT_VERSION__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION_CHECK)
+    #undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_COMPCERT_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #undef JSON_HEDLEY_PELLES_VERSION
+#endif
+#if defined(__POCC__)
+    #define JSON_HEDLEY_PELLES_VERSION JSON_HEDLEY_VERSION_ENCODE(__POCC__ / 100, __POCC__ % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION_CHECK)
+    #undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PELLES_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #undef JSON_HEDLEY_MCST_LCC_VERSION
+#endif
+#if defined(__LCC__) && defined(__LCC_MINOR__)
+    #define JSON_HEDLEY_MCST_LCC_VERSION JSON_HEDLEY_VERSION_ENCODE(__LCC__ / 100, __LCC__ % 100, __LCC_MINOR__)
+#endif
+
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_MCST_LCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #undef JSON_HEDLEY_GCC_VERSION
+#endif
+#if \
+    defined(JSON_HEDLEY_GNUC_VERSION) && \
+    !defined(__clang__) && \
+    !defined(JSON_HEDLEY_INTEL_VERSION) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_ARM_VERSION) && \
+    !defined(JSON_HEDLEY_CRAY_VERSION) && \
+    !defined(JSON_HEDLEY_TI_VERSION) && \
+    !defined(JSON_HEDLEY_TI_ARMCL_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL430_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL2000_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL6X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL7X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CLPRU_VERSION) && \
+    !defined(__COMPCERT__) && \
+    !defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION JSON_HEDLEY_GNUC_VERSION
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_ATTRIBUTE
+#endif
+#if \
+  defined(__has_attribute) && \
+  ( \
+    (!defined(JSON_HEDLEY_IAR_VERSION) || JSON_HEDLEY_IAR_VERSION_CHECK(8,5,9)) \
+  )
+#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) __has_attribute(attribute)
+#else
+#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#endif
+#if \
+    defined(__has_cpp_attribute) && \
+    defined(__cplusplus) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#endif
+#if !defined(__cplusplus) || !defined(__has_cpp_attribute)
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#elif \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_IAR_VERSION) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0)) && \
+    (!defined(JSON_HEDLEY_MSVC_VERSION) || JSON_HEDLEY_MSVC_VERSION_CHECK(19,20,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(ns::attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_BUILTIN)
+    #undef JSON_HEDLEY_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_FEATURE)
+    #undef JSON_HEDLEY_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_HAS_FEATURE(feature) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_HAS_FEATURE(feature) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GCC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_EXTENSION)
+    #undef JSON_HEDLEY_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_WARNING)
+    #undef JSON_HEDLEY_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_HAS_WARNING(warning) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_HAS_WARNING(warning) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_WARNING)
+    #undef JSON_HEDLEY_GNUC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_WARNING)
+    #undef JSON_HEDLEY_GCC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,17) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(8,0,0) || \
+    (JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) && defined(__C99_PRAGMA_OPERATOR))
+    #define JSON_HEDLEY_PRAGMA(value) _Pragma(#value)
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_PRAGMA(value) __pragma(value)
+#else
+    #define JSON_HEDLEY_PRAGMA(value)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_PUSH)
+    #undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#endif
+#if defined(JSON_HEDLEY_DIAGNOSTIC_POP)
+    #undef JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("clang diagnostic pop")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH __pragma(warning(push))
+    #define JSON_HEDLEY_DIAGNOSTIC_POP __pragma(warning(pop))
+#elif JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("pop")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,4,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("diag_push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("diag_pop")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH
+    #define JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+
+/* JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat")
+#    if JSON_HEDLEY_HAS_WARNING("-Wc++17-extensions")
+#      if JSON_HEDLEY_HAS_WARNING("-Wc++1z-extensions")
+#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++1z-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#      else
+#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#      endif
+#    else
+#      define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    endif
+#  endif
+#endif
+#if !defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(x) x
+#endif
+
+#if defined(JSON_HEDLEY_CONST_CAST)
+    #undef JSON_HEDLEY_CONST_CAST
+#endif
+#if defined(__cplusplus)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (const_cast<T>(expr))
+#elif \
+  JSON_HEDLEY_HAS_WARNING("-Wcast-qual") || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_CONST_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_REINTERPRET_CAST)
+    #undef JSON_HEDLEY_REINTERPRET_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) (reinterpret_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_CAST)
+    #undef JSON_HEDLEY_STATIC_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) (static_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_CPP_CAST)
+    #undef JSON_HEDLEY_CPP_CAST
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wold-style-cast")
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wold-style-cast\"") \
+    ((T) (expr)) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  elif JSON_HEDLEY_IAR_VERSION_CHECK(8,3,0)
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("diag_suppress=Pe137") \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_CPP_CAST(T, expr) ((T) (expr))
+#  endif
+#else
+#  define JSON_HEDLEY_CPP_CAST(T, expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wdeprecated-declarations")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warning(disable:1478 1786)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:1478 1786))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1216,1444,1445")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:4996))
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1291,1718")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,E_DEPRECATED_ATT,E_DEPRECATED_ATT_MESS)")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,symdeprecated,symdeprecated2)")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress=Pe1444,Pe1215")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warn(disable:2241)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("warning(disable:161)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:161))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 1675")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("GCC diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:4068))
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(16,9,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress=Pe161")
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 161")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-attributes")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("clang diagnostic ignored \"-Wunknown-attributes\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("warning(disable:1292)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:1292))
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:5030))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097,1098")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("error_messages(off,attrskipunsup)")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1173")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress=Pe1097")
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wcast-qual")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("warning(disable:2203 2331)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunused-function")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("clang diagnostic ignored \"-Wunused-function\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("GCC diagnostic ignored \"-Wunused-function\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(1,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION __pragma(warning(disable:4505))
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("diag_suppress 3142")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#endif
+
+#if defined(JSON_HEDLEY_DEPRECATED)
+    #undef JSON_HEDLEY_DEPRECATED
+#endif
+#if defined(JSON_HEDLEY_DEPRECATED_FOR)
+    #undef JSON_HEDLEY_DEPRECATED_FOR
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated("Since " # since))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated("Since " #since "; use " #replacement))
+#elif \
+    (JSON_HEDLEY_HAS_EXTENSION(attribute_deprecated_with_message) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__("Since " #since)))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__("Since " #since "; use " #replacement)))
+#elif defined(__cplusplus) && (__cplusplus >= 201402L)
+    #define JSON_HEDLEY_DEPRECATED(since) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since)]])
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since "; use " #replacement)]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(deprecated) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_PELLES_VERSION_CHECK(6,50,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DEPRECATED(since) _Pragma("deprecated")
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) _Pragma("deprecated")
+#else
+    #define JSON_HEDLEY_DEPRECATED(since)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement)
+#endif
+
+#if defined(JSON_HEDLEY_UNAVAILABLE)
+    #undef JSON_HEDLEY_UNAVAILABLE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warning) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_UNAVAILABLE(available_since) __attribute__((__warning__("Not available until " #available_since)))
+#else
+    #define JSON_HEDLEY_UNAVAILABLE(available_since)
+#endif
+
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#endif
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT_MSG)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warn_unused_result) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) __attribute__((__warn_unused_result__))
+#elif (JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard) >= 201907L)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard(msg)]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+#elif defined(_Check_return_) /* SAL */
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT _Check_return_
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) _Check_return_
+#else
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg)
+#endif
+
+#if defined(JSON_HEDLEY_SENTINEL)
+    #undef JSON_HEDLEY_SENTINEL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(sentinel) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_SENTINEL(position) __attribute__((__sentinel__(position)))
+#else
+    #define JSON_HEDLEY_SENTINEL(position)
+#endif
+
+#if defined(JSON_HEDLEY_NO_RETURN)
+    #undef JSON_HEDLEY_NO_RETURN
+#endif
+#if JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NO_RETURN __noreturn
+#elif \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+    #define JSON_HEDLEY_NO_RETURN _Noreturn
+#elif defined(__cplusplus) && (__cplusplus >= 201103L)
+    #define JSON_HEDLEY_NO_RETURN JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[noreturn]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noreturn) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,2,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("does_not_return")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("FUNC_NEVER_RETURNS;")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute((noreturn))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#else
+    #define JSON_HEDLEY_NO_RETURN
+#endif
+
+#if defined(JSON_HEDLEY_NO_ESCAPE)
+    #undef JSON_HEDLEY_NO_ESCAPE
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(noescape)
+    #define JSON_HEDLEY_NO_ESCAPE __attribute__((__noescape__))
+#else
+    #define JSON_HEDLEY_NO_ESCAPE
+#endif
+
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #undef JSON_HEDLEY_UNREACHABLE
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE_RETURN)
+    #undef JSON_HEDLEY_UNREACHABLE_RETURN
+#endif
+#if defined(JSON_HEDLEY_ASSUME)
+    #undef JSON_HEDLEY_ASSUME
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_ASSUME(expr) __assume(expr)
+#elif JSON_HEDLEY_HAS_BUILTIN(__builtin_assume)
+    #define JSON_HEDLEY_ASSUME(expr) __builtin_assume(expr)
+#elif \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+    #if defined(__cplusplus)
+        #define JSON_HEDLEY_ASSUME(expr) std::_nassert(expr)
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) _nassert(expr)
+    #endif
+#endif
+#if \
+    (JSON_HEDLEY_HAS_BUILTIN(__builtin_unreachable) && (!defined(JSON_HEDLEY_ARM_VERSION))) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,5) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(10,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_UNREACHABLE() __builtin_unreachable()
+#elif defined(JSON_HEDLEY_ASSUME)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+#if !defined(JSON_HEDLEY_ASSUME)
+    #if defined(JSON_HEDLEY_UNREACHABLE)
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, ((expr) ? 1 : (JSON_HEDLEY_UNREACHABLE(), 1)))
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, expr)
+    #endif
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #if  \
+        JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (JSON_HEDLEY_STATIC_CAST(void, JSON_HEDLEY_ASSUME(0)), (value))
+    #else
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) JSON_HEDLEY_UNREACHABLE()
+    #endif
+#else
+    #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (value)
+#endif
+#if !defined(JSON_HEDLEY_UNREACHABLE)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+
+JSON_HEDLEY_DIAGNOSTIC_PUSH
+#if JSON_HEDLEY_HAS_WARNING("-Wpedantic")
+    #pragma clang diagnostic ignored "-Wpedantic"
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat-pedantic") && defined(__cplusplus)
+    #pragma clang diagnostic ignored "-Wc++98-compat-pedantic"
+#endif
+#if JSON_HEDLEY_GCC_HAS_WARNING("-Wvariadic-macros",4,0,0)
+    #if defined(__clang__)
+        #pragma clang diagnostic ignored "-Wvariadic-macros"
+    #elif defined(JSON_HEDLEY_GCC_VERSION)
+        #pragma GCC diagnostic ignored "-Wvariadic-macros"
+    #endif
+#endif
+#if defined(JSON_HEDLEY_NON_NULL)
+    #undef JSON_HEDLEY_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NON_NULL(...) __attribute__((__nonnull__(__VA_ARGS__)))
+#else
+    #define JSON_HEDLEY_NON_NULL(...)
+#endif
+JSON_HEDLEY_DIAGNOSTIC_POP
+
+#if defined(JSON_HEDLEY_PRINTF_FORMAT)
+    #undef JSON_HEDLEY_PRINTF_FORMAT
+#endif
+#if defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && !defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(ms_printf, string_idx, first_to_check)))
+#elif defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(gnu_printf, string_idx, first_to_check)))
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(format) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(__printf__, string_idx, first_to_check)))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(6,0,0)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __declspec(vaformat(printf,string_idx,first_to_check))
+#else
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check)
+#endif
+
+#if defined(JSON_HEDLEY_CONSTEXPR)
+    #undef JSON_HEDLEY_CONSTEXPR
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_CONSTEXPR JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(constexpr)
+    #endif
+#endif
+#if !defined(JSON_HEDLEY_CONSTEXPR)
+    #define JSON_HEDLEY_CONSTEXPR
+#endif
+
+#if defined(JSON_HEDLEY_PREDICT)
+    #undef JSON_HEDLEY_PREDICT
+#endif
+#if defined(JSON_HEDLEY_LIKELY)
+    #undef JSON_HEDLEY_LIKELY
+#endif
+#if defined(JSON_HEDLEY_UNLIKELY)
+    #undef JSON_HEDLEY_UNLIKELY
+#endif
+#if defined(JSON_HEDLEY_UNPREDICTABLE)
+    #undef JSON_HEDLEY_UNPREDICTABLE
+#endif
+#if JSON_HEDLEY_HAS_BUILTIN(__builtin_unpredictable)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) __builtin_unpredictable((expr))
+#endif
+#if \
+  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect_with_probability) && !defined(JSON_HEDLEY_PGI_VERSION)) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(9,0,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PREDICT(expr, value, probability) __builtin_expect_with_probability(  (expr), (value), (probability))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability)   __builtin_expect_with_probability(!!(expr),    1   , (probability))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability)  __builtin_expect_with_probability(!!(expr),    0   , (probability))
+#  define JSON_HEDLEY_LIKELY(expr)                      __builtin_expect                 (!!(expr),    1                  )
+#  define JSON_HEDLEY_UNLIKELY(expr)                    __builtin_expect                 (!!(expr),    0                  )
+#elif \
+  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,27) || \
+  JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) \
+    (((probability) >= 0.9) ? __builtin_expect((expr), (expected)) : (JSON_HEDLEY_STATIC_CAST(void, expected), (expr)))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 1) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 0) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 0) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 1) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_LIKELY(expr)   __builtin_expect(!!(expr), 1)
+#  define JSON_HEDLEY_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
+#else
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) (JSON_HEDLEY_STATIC_CAST(void, expected), (expr))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_LIKELY(expr) (!!(expr))
+#  define JSON_HEDLEY_UNLIKELY(expr) (!!(expr))
+#endif
+#if !defined(JSON_HEDLEY_UNPREDICTABLE)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) JSON_HEDLEY_PREDICT(expr, 1, 0.5)
+#endif
+
+#if defined(JSON_HEDLEY_MALLOC)
+    #undef JSON_HEDLEY_MALLOC
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(malloc) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_MALLOC __attribute__((__malloc__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_MALLOC _Pragma("returns_new_memory")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_MALLOC __declspec(restrict)
+#else
+    #define JSON_HEDLEY_MALLOC
+#endif
+
+#if defined(JSON_HEDLEY_PURE)
+    #undef JSON_HEDLEY_PURE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(pure) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(2,96,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PURE __attribute__((__pure__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+#  define JSON_HEDLEY_PURE _Pragma("does_not_write_global_data")
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) \
+    )
+#  define JSON_HEDLEY_PURE _Pragma("FUNC_IS_PURE;")
+#else
+#  define JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_CONST)
+    #undef JSON_HEDLEY_CONST
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(const) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(2,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_CONST __attribute__((__const__))
+#elif \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_CONST _Pragma("no_side_effect")
+#else
+    #define JSON_HEDLEY_CONST JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_RESTRICT)
+    #undef JSON_HEDLEY_RESTRICT
+#endif
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT restrict
+#elif \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,4) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_RESTRICT __restrict
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,3,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT _Restrict
+#else
+    #define JSON_HEDLEY_RESTRICT
+#endif
+
+#if defined(JSON_HEDLEY_INLINE)
+    #undef JSON_HEDLEY_INLINE
+#endif
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    (defined(__cplusplus) && (__cplusplus >= 199711L))
+    #define JSON_HEDLEY_INLINE inline
+#elif \
+    defined(JSON_HEDLEY_GCC_VERSION) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(6,2,0)
+    #define JSON_HEDLEY_INLINE __inline__
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,1,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_INLINE __inline
+#else
+    #define JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_ALWAYS_INLINE)
+    #undef JSON_HEDLEY_ALWAYS_INLINE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(always_inline) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+  JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __attribute__((__always_inline__)) JSON_HEDLEY_INLINE
+#elif \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __forceinline
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+      JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+      JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) \
+    )
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("FUNC_ALWAYS_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("inline=forced")
+#else
+#  define JSON_HEDLEY_ALWAYS_INLINE JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_NEVER_INLINE)
+    #undef JSON_HEDLEY_NEVER_INLINE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noinline) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute__((__noinline__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(10,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("noinline")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("FUNC_CANNOT_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("inline=never")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute((noinline))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#else
+    #define JSON_HEDLEY_NEVER_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_PRIVATE)
+    #undef JSON_HEDLEY_PRIVATE
+#endif
+#if defined(JSON_HEDLEY_PUBLIC)
+    #undef JSON_HEDLEY_PUBLIC
+#endif
+#if defined(JSON_HEDLEY_IMPORT)
+    #undef JSON_HEDLEY_IMPORT
+#endif
+#if defined(_WIN32) || defined(__CYGWIN__)
+#  define JSON_HEDLEY_PRIVATE
+#  define JSON_HEDLEY_PUBLIC   __declspec(dllexport)
+#  define JSON_HEDLEY_IMPORT   __declspec(dllimport)
+#else
+#  if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(visibility) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    ( \
+      defined(__TI_EABI__) && \
+      ( \
+        (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) \
+      ) \
+    ) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#    define JSON_HEDLEY_PRIVATE __attribute__((__visibility__("hidden")))
+#    define JSON_HEDLEY_PUBLIC  __attribute__((__visibility__("default")))
+#  else
+#    define JSON_HEDLEY_PRIVATE
+#    define JSON_HEDLEY_PUBLIC
+#  endif
+#  define JSON_HEDLEY_IMPORT    extern
+#endif
+
+#if defined(JSON_HEDLEY_NO_THROW)
+    #undef JSON_HEDLEY_NO_THROW
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nothrow) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_NO_THROW __attribute__((__nothrow__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NO_THROW __declspec(nothrow)
+#else
+    #define JSON_HEDLEY_NO_THROW
+#endif
+
+#if defined(JSON_HEDLEY_FALL_THROUGH)
+    #undef JSON_HEDLEY_FALL_THROUGH
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(fallthrough) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_FALL_THROUGH __attribute__((__fallthrough__))
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(clang,fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[clang::fallthrough]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[fallthrough]])
+#elif defined(__fallthrough) /* SAL */
+    #define JSON_HEDLEY_FALL_THROUGH __fallthrough
+#else
+    #define JSON_HEDLEY_FALL_THROUGH
+#endif
+
+#if defined(JSON_HEDLEY_RETURNS_NON_NULL)
+    #undef JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(returns_nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_RETURNS_NON_NULL __attribute__((__returns_nonnull__))
+#elif defined(_Ret_notnull_) /* SAL */
+    #define JSON_HEDLEY_RETURNS_NON_NULL _Ret_notnull_
+#else
+    #define JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+
+#if defined(JSON_HEDLEY_ARRAY_PARAM)
+    #undef JSON_HEDLEY_ARRAY_PARAM
+#endif
+#if \
+    defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
+    !defined(__STDC_NO_VLA__) && \
+    !defined(__cplusplus) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_ARRAY_PARAM(name) (name)
+#else
+    #define JSON_HEDLEY_ARRAY_PARAM(name)
+#endif
+
+#if defined(JSON_HEDLEY_IS_CONSTANT)
+    #undef JSON_HEDLEY_IS_CONSTANT
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_CONSTEXPR)
+    #undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#endif
+/* JSON_HEDLEY_IS_CONSTEXPR_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #undef JSON_HEDLEY_IS_CONSTEXPR_
+#endif
+#if \
+    JSON_HEDLEY_HAS_BUILTIN(__builtin_constant_p) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,19) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0) && !defined(__cplusplus)) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_IS_CONSTANT(expr) __builtin_constant_p(expr)
+#endif
+#if !defined(__cplusplus)
+#  if \
+       JSON_HEDLEY_HAS_BUILTIN(__builtin_types_compatible_p) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+       JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+       JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,24)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0)), int*)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((intptr_t) ((expr) * 0)) : (int*) 0)), int*)
+#endif
+#  elif \
+       ( \
+          defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) && \
+          !defined(JSON_HEDLEY_SUNPRO_VERSION) && \
+          !defined(JSON_HEDLEY_PGI_VERSION) && \
+          !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       (JSON_HEDLEY_HAS_EXTENSION(c_generic_selections) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,3,0)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0), int*: 1, void*: 0)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((intptr_t) * 0) : (int*) 0), int*: 1, void*: 0)
+#endif
+#  elif \
+       defined(JSON_HEDLEY_GCC_VERSION) || \
+       defined(JSON_HEDLEY_INTEL_VERSION) || \
+       defined(JSON_HEDLEY_TINYC_VERSION) || \
+       defined(JSON_HEDLEY_TI_ARMCL_VERSION) || \
+       JSON_HEDLEY_TI_CL430_VERSION_CHECK(18,12,0) || \
+       defined(JSON_HEDLEY_TI_CL2000_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL6X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL7X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CLPRU_VERSION) || \
+       defined(__clang__)
+#    define JSON_HEDLEY_IS_CONSTEXPR_(expr) ( \
+        sizeof(void) != \
+        sizeof(*( \
+                  1 ? \
+                  ((void*) ((expr) * 0L) ) : \
+((struct { char v[sizeof(void) * 2]; } *) 1) \
+                ) \
+              ) \
+                                            )
+#  endif
+#endif
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) JSON_HEDLEY_IS_CONSTEXPR_(expr)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (JSON_HEDLEY_IS_CONSTEXPR_(expr) ? (expr) : (-1))
+#else
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) (0)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_BEGIN_C_DECLS)
+    #undef JSON_HEDLEY_BEGIN_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_END_C_DECLS)
+    #undef JSON_HEDLEY_END_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_C_DECL)
+    #undef JSON_HEDLEY_C_DECL
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_BEGIN_C_DECLS extern "C" {
+    #define JSON_HEDLEY_END_C_DECLS }
+    #define JSON_HEDLEY_C_DECL extern "C"
+#else
+    #define JSON_HEDLEY_BEGIN_C_DECLS
+    #define JSON_HEDLEY_END_C_DECLS
+    #define JSON_HEDLEY_C_DECL
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_ASSERT)
+    #undef JSON_HEDLEY_STATIC_ASSERT
+#endif
+#if \
+  !defined(__cplusplus) && ( \
+      (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)) || \
+      (JSON_HEDLEY_HAS_FEATURE(c_static_assert) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
+      JSON_HEDLEY_GCC_VERSION_CHECK(6,0,0) || \
+      JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+      defined(_Static_assert) \
+    )
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) _Static_assert(expr, message)
+#elif \
+  (defined(__cplusplus) && (__cplusplus >= 201103L)) || \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(16,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(static_assert(expr, message))
+#else
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message)
+#endif
+
+#if defined(JSON_HEDLEY_NULL)
+    #undef JSON_HEDLEY_NULL
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(nullptr)
+    #elif defined(NULL)
+        #define JSON_HEDLEY_NULL NULL
+    #else
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_STATIC_CAST(void*, 0)
+    #endif
+#elif defined(NULL)
+    #define JSON_HEDLEY_NULL NULL
+#else
+    #define JSON_HEDLEY_NULL ((void*) 0)
+#endif
+
+#if defined(JSON_HEDLEY_MESSAGE)
+    #undef JSON_HEDLEY_MESSAGE
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_MESSAGE(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(message msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message msg)
+#elif JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(_CRI message msg)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_WARNING)
+    #undef JSON_HEDLEY_WARNING
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_WARNING(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(clang warning msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,8,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(GCC warning msg)
+#elif \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_REQUIRE)
+    #undef JSON_HEDLEY_REQUIRE
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_MSG)
+    #undef JSON_HEDLEY_REQUIRE_MSG
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(diagnose_if)
+#  if JSON_HEDLEY_HAS_WARNING("-Wgcc-compat")
+#    define JSON_HEDLEY_REQUIRE(expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), #expr, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), msg, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_REQUIRE(expr) __attribute__((diagnose_if(!(expr), #expr, "error")))
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) __attribute__((diagnose_if(!(expr), msg, "error")))
+#  endif
+#else
+#  define JSON_HEDLEY_REQUIRE(expr)
+#  define JSON_HEDLEY_REQUIRE_MSG(expr,msg)
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS)
+    #undef JSON_HEDLEY_FLAGS
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(flag_enum) && (!defined(__cplusplus) || JSON_HEDLEY_HAS_WARNING("-Wbitfield-enum-conversion"))
+    #define JSON_HEDLEY_FLAGS __attribute__((__flag_enum__))
+#else
+    #define JSON_HEDLEY_FLAGS
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS_CAST)
+    #undef JSON_HEDLEY_FLAGS_CAST
+#endif
+#if JSON_HEDLEY_INTEL_VERSION_CHECK(19,0,0)
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        _Pragma("warning(disable:188)") \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) JSON_HEDLEY_STATIC_CAST(T, expr)
+#endif
+
+#if defined(JSON_HEDLEY_EMPTY_BASES)
+    #undef JSON_HEDLEY_EMPTY_BASES
+#endif
+#if \
+    (JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,23918) && !JSON_HEDLEY_MSVC_VERSION_CHECK(20,0,0)) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_EMPTY_BASES __declspec(empty_bases)
+#else
+    #define JSON_HEDLEY_EMPTY_BASES
+#endif
+
+/* Remaining macros are deprecated. */
+
+#if defined(JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) (0)
+#else
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_CLANG_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_BUILTIN)
+    #undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#endif
+#define JSON_HEDLEY_CLANG_HAS_BUILTIN(builtin) JSON_HEDLEY_HAS_BUILTIN(builtin)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_FEATURE)
+    #undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_FEATURE(feature) JSON_HEDLEY_HAS_FEATURE(feature)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_EXTENSION)
+    #undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#endif
+#define JSON_HEDLEY_CLANG_HAS_EXTENSION(extension) JSON_HEDLEY_HAS_EXTENSION(extension)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_DECLSPEC_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_WARNING)
+    #undef JSON_HEDLEY_CLANG_HAS_WARNING
+#endif
+#define JSON_HEDLEY_CLANG_HAS_WARNING(warning) JSON_HEDLEY_HAS_WARNING(warning)
+
+#endif /* !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < X) */
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/thirdparty/hedley/hedley_undef.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/thirdparty/hedley/hedley_undef.hpp
new file mode 100644
index 00000000..c07df895
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/include/nlohmann/thirdparty/hedley/hedley_undef.hpp
@@ -0,0 +1,158 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#undef JSON_HEDLEY_ALWAYS_INLINE
+#undef JSON_HEDLEY_ARM_VERSION
+#undef JSON_HEDLEY_ARM_VERSION_CHECK
+#undef JSON_HEDLEY_ARRAY_PARAM
+#undef JSON_HEDLEY_ASSUME
+#undef JSON_HEDLEY_BEGIN_C_DECLS
+#undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#undef JSON_HEDLEY_CLANG_HAS_WARNING
+#undef JSON_HEDLEY_COMPCERT_VERSION
+#undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#undef JSON_HEDLEY_CONCAT
+#undef JSON_HEDLEY_CONCAT3
+#undef JSON_HEDLEY_CONCAT3_EX
+#undef JSON_HEDLEY_CONCAT_EX
+#undef JSON_HEDLEY_CONST
+#undef JSON_HEDLEY_CONSTEXPR
+#undef JSON_HEDLEY_CONST_CAST
+#undef JSON_HEDLEY_CPP_CAST
+#undef JSON_HEDLEY_CRAY_VERSION
+#undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#undef JSON_HEDLEY_C_DECL
+#undef JSON_HEDLEY_DEPRECATED
+#undef JSON_HEDLEY_DEPRECATED_FOR
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#undef JSON_HEDLEY_DIAGNOSTIC_POP
+#undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#undef JSON_HEDLEY_DMC_VERSION
+#undef JSON_HEDLEY_DMC_VERSION_CHECK
+#undef JSON_HEDLEY_EMPTY_BASES
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#undef JSON_HEDLEY_END_C_DECLS
+#undef JSON_HEDLEY_FLAGS
+#undef JSON_HEDLEY_FLAGS_CAST
+#undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#undef JSON_HEDLEY_GCC_HAS_FEATURE
+#undef JSON_HEDLEY_GCC_HAS_WARNING
+#undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#undef JSON_HEDLEY_GCC_VERSION
+#undef JSON_HEDLEY_GCC_VERSION_CHECK
+#undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#undef JSON_HEDLEY_GNUC_HAS_WARNING
+#undef JSON_HEDLEY_GNUC_VERSION
+#undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#undef JSON_HEDLEY_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_BUILTIN
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_EXTENSION
+#undef JSON_HEDLEY_HAS_FEATURE
+#undef JSON_HEDLEY_HAS_WARNING
+#undef JSON_HEDLEY_IAR_VERSION
+#undef JSON_HEDLEY_IAR_VERSION_CHECK
+#undef JSON_HEDLEY_IBM_VERSION
+#undef JSON_HEDLEY_IBM_VERSION_CHECK
+#undef JSON_HEDLEY_IMPORT
+#undef JSON_HEDLEY_INLINE
+#undef JSON_HEDLEY_INTEL_CL_VERSION
+#undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
+#undef JSON_HEDLEY_INTEL_VERSION
+#undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#undef JSON_HEDLEY_IS_CONSTANT
+#undef JSON_HEDLEY_IS_CONSTEXPR_
+#undef JSON_HEDLEY_LIKELY
+#undef JSON_HEDLEY_MALLOC
+#undef JSON_HEDLEY_MCST_LCC_VERSION
+#undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
+#undef JSON_HEDLEY_MESSAGE
+#undef JSON_HEDLEY_MSVC_VERSION
+#undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#undef JSON_HEDLEY_NEVER_INLINE
+#undef JSON_HEDLEY_NON_NULL
+#undef JSON_HEDLEY_NO_ESCAPE
+#undef JSON_HEDLEY_NO_RETURN
+#undef JSON_HEDLEY_NO_THROW
+#undef JSON_HEDLEY_NULL
+#undef JSON_HEDLEY_PELLES_VERSION
+#undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#undef JSON_HEDLEY_PGI_VERSION
+#undef JSON_HEDLEY_PGI_VERSION_CHECK
+#undef JSON_HEDLEY_PREDICT
+#undef JSON_HEDLEY_PRINTF_FORMAT
+#undef JSON_HEDLEY_PRIVATE
+#undef JSON_HEDLEY_PUBLIC
+#undef JSON_HEDLEY_PURE
+#undef JSON_HEDLEY_REINTERPRET_CAST
+#undef JSON_HEDLEY_REQUIRE
+#undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#undef JSON_HEDLEY_REQUIRE_MSG
+#undef JSON_HEDLEY_RESTRICT
+#undef JSON_HEDLEY_RETURNS_NON_NULL
+#undef JSON_HEDLEY_SENTINEL
+#undef JSON_HEDLEY_STATIC_ASSERT
+#undef JSON_HEDLEY_STATIC_CAST
+#undef JSON_HEDLEY_STRINGIFY
+#undef JSON_HEDLEY_STRINGIFY_EX
+#undef JSON_HEDLEY_SUNPRO_VERSION
+#undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#undef JSON_HEDLEY_TINYC_VERSION
+#undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#undef JSON_HEDLEY_TI_ARMCL_VERSION
+#undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL2000_VERSION
+#undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL430_VERSION
+#undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL6X_VERSION
+#undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL7X_VERSION
+#undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CLPRU_VERSION
+#undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#undef JSON_HEDLEY_TI_VERSION
+#undef JSON_HEDLEY_TI_VERSION_CHECK
+#undef JSON_HEDLEY_UNAVAILABLE
+#undef JSON_HEDLEY_UNLIKELY
+#undef JSON_HEDLEY_UNPREDICTABLE
+#undef JSON_HEDLEY_UNREACHABLE
+#undef JSON_HEDLEY_UNREACHABLE_RETURN
+#undef JSON_HEDLEY_VERSION
+#undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#undef JSON_HEDLEY_VERSION_ENCODE
+#undef JSON_HEDLEY_WARNING
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#undef JSON_HEDLEY_FALL_THROUGH
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/meson.build b/ohos/vap/vap_module/src/main/cpp/include/util/json/meson.build
new file mode 100644
index 00000000..7a9c5ec8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/meson.build
@@ -0,0 +1,24 @@
+project('nlohmann_json',
+    'cpp',
+    version : '3.11.3',
+    license : 'MIT',
+)
+
+nlohmann_json_dep = declare_dependency(
+    include_directories: include_directories('single_include')
+)
+
+nlohmann_json_multiple_headers = declare_dependency(
+    include_directories: include_directories('include')
+)
+
+if not meson.is_subproject()
+install_headers('single_include/nlohmann/json.hpp', subdir: 'nlohmann')
+install_headers('single_include/nlohmann/json_fwd.hpp', subdir: 'nlohmann')
+
+pkgc = import('pkgconfig')
+pkgc.generate(name: 'nlohmann_json',
+    version: meson.project_version(),
+    description: 'JSON for Modern C++'
+)
+endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/nlohmann_json.natvis b/ohos/vap/vap_module/src/main/cpp/include/util/json/nlohmann_json.natvis
new file mode 100644
index 00000000..fbe4221f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/nlohmann_json.natvis
@@ -0,0 +1,278 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- * * * * * * * * AUTO-GENERATED FILE  * * * * * * * * -->
+<!-- Edit ./tools/generate_natvis/nlohmann_json.natvis.j2 -->
+<!-- * * * * * * * * AUTO-GENERATED FILE  * * * * * * * * -->
+
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- Namespace nlohmann -->
+    <Type Name="nlohmann::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Namespace nlohmann::json_abi -->
+    <Type Name="nlohmann::json_abi::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::json_abi::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Namespace nlohmann::json_abi_v3_11_3 -->
+    <Type Name="nlohmann::json_abi_v3_11_3::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_v3_11_3::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::json_abi_v3_11_3::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Namespace nlohmann::json_abi_diag -->
+    <Type Name="nlohmann::json_abi_diag::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_diag::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::json_abi_diag::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Namespace nlohmann::json_abi_diag_v3_11_3 -->
+    <Type Name="nlohmann::json_abi_diag_v3_11_3::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_diag_v3_11_3::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::json_abi_diag_v3_11_3::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Namespace nlohmann::json_abi_ldvcmp -->
+    <Type Name="nlohmann::json_abi_ldvcmp::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_ldvcmp::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::json_abi_ldvcmp::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Namespace nlohmann::json_abi_ldvcmp_v3_11_3 -->
+    <Type Name="nlohmann::json_abi_ldvcmp_v3_11_3::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_ldvcmp_v3_11_3::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::json_abi_ldvcmp_v3_11_3::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Namespace nlohmann::json_abi_diag_ldvcmp -->
+    <Type Name="nlohmann::json_abi_diag_ldvcmp::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::json_abi_diag_ldvcmp::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Namespace nlohmann::json_abi_diag_ldvcmp_v3_11_3 -->
+    <Type Name="nlohmann::json_abi_diag_ldvcmp_v3_11_3::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == nlohmann::json_abi_diag_ldvcmp_v3_11_3::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, nlohmann::json_abi_diag_ldvcmp_v3_11_3::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+</AutoVisualizer>
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/single_include/nlohmann/json.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/single_include/nlohmann/json.hpp
new file mode 100644
index 00000000..a13dd22f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/single_include/nlohmann/json.hpp
@@ -0,0 +1,25361 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/****************************************************************************\
+ * Note on documentation: The source files contain links to the online      *
+ * documentation of the public API at https://json.nlohmann.me. This URL    *
+ * contains the most recent documentation and should also be applicable to  *
+ * previous versions; documentation for deprecated functions is not         *
+ * removed, but marked deprecated. See "Generate documentation" section in  *
+ * file docs/README.md.                                                     *
+\****************************************************************************/
+
+#ifndef INCLUDE_NLOHMANN_JSON_HPP_
+#define INCLUDE_NLOHMANN_JSON_HPP_
+
+#include <algorithm> // all_of, find, for_each
+#include <cstddef> // nullptr_t, ptrdiff_t, size_t
+#include <functional> // hash, less
+#include <initializer_list> // initializer_list
+#ifndef JSON_NO_IO
+    #include <iosfwd> // istream, ostream
+#endif  // JSON_NO_IO
+#include <iterator> // random_access_iterator_tag
+#include <memory> // unique_ptr
+#include <string> // string, stoi, to_string
+#include <utility> // declval, forward, move, pair, swap
+#include <vector> // vector
+
+// #include <nlohmann/adl_serializer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <utility>
+
+// #include <nlohmann/detail/abi_macros.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// This file contains all macro definitions affecting or depending on the ABI
+
+#ifndef JSON_SKIP_LIBRARY_VERSION_CHECK
+    #if defined(NLOHMANN_JSON_VERSION_MAJOR) && defined(NLOHMANN_JSON_VERSION_MINOR) && defined(NLOHMANN_JSON_VERSION_PATCH)
+        #if NLOHMANN_JSON_VERSION_MAJOR != 3 || NLOHMANN_JSON_VERSION_MINOR != 11 || NLOHMANN_JSON_VERSION_PATCH != 3
+            #warning "Already included a different version of the library!"
+        #endif
+    #endif
+#endif
+
+#define NLOHMANN_JSON_VERSION_MAJOR 3   // NOLINT(modernize-macro-to-enum)
+#define NLOHMANN_JSON_VERSION_MINOR 11  // NOLINT(modernize-macro-to-enum)
+#define NLOHMANN_JSON_VERSION_PATCH 3   // NOLINT(modernize-macro-to-enum)
+
+#ifndef JSON_DIAGNOSTICS
+    #define JSON_DIAGNOSTICS 0
+#endif
+
+#ifndef JSON_DIAGNOSTIC_POSITIONS
+    #define JSON_DIAGNOSTIC_POSITIONS 0
+#endif
+
+#ifndef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON 0
+#endif
+
+#if JSON_DIAGNOSTICS
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS _diag
+#else
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS
+#endif
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS _dp
+#else
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS
+#endif
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON _ldvcmp
+#else
+    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_NO_VERSION
+    #define NLOHMANN_JSON_NAMESPACE_NO_VERSION 0
+#endif
+
+// Construct the namespace ABI tags component
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b, c) json_abi ## a ## b ## c
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b, c) \
+    NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b, c)
+
+#define NLOHMANN_JSON_ABI_TAGS                                       \
+    NLOHMANN_JSON_ABI_TAGS_CONCAT(                                   \
+            NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS,                       \
+            NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON, \
+            NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS)
+
+// Construct the namespace version component
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) \
+    _v ## major ## _ ## minor ## _ ## patch
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) \
+    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
+
+#if NLOHMANN_JSON_NAMESPACE_NO_VERSION
+#define NLOHMANN_JSON_NAMESPACE_VERSION
+#else
+#define NLOHMANN_JSON_NAMESPACE_VERSION                                 \
+    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, \
+                                           NLOHMANN_JSON_VERSION_MINOR, \
+                                           NLOHMANN_JSON_VERSION_PATCH)
+#endif
+
+// Combine namespace components
+#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a ## b
+#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) \
+    NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
+
+#ifndef NLOHMANN_JSON_NAMESPACE
+#define NLOHMANN_JSON_NAMESPACE               \
+    nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT( \
+            NLOHMANN_JSON_ABI_TAGS,           \
+            NLOHMANN_JSON_NAMESPACE_VERSION)
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_BEGIN
+#define NLOHMANN_JSON_NAMESPACE_BEGIN                \
+    namespace nlohmann                               \
+    {                                                \
+    inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT( \
+                NLOHMANN_JSON_ABI_TAGS,              \
+                NLOHMANN_JSON_NAMESPACE_VERSION)     \
+    {
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_END
+#define NLOHMANN_JSON_NAMESPACE_END                                     \
+    }  /* namespace (inline namespace) NOLINT(readability/namespace) */ \
+    }  // namespace nlohmann
+#endif
+
+// #include <nlohmann/detail/conversions/from_json.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // transform
+#include <array> // array
+#include <forward_list> // forward_list
+#include <iterator> // inserter, front_inserter, end
+#include <map> // map
+#ifdef JSON_HAS_CPP_17
+    #include <optional> // optional
+#endif
+#include <string> // string
+#include <tuple> // tuple, make_tuple
+#include <type_traits> // is_arithmetic, is_same, is_enum, underlying_type, is_convertible
+#include <unordered_map> // unordered_map
+#include <utility> // pair, declval
+#include <valarray> // valarray
+
+
+// #include <nlohmann/detail/exceptions.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // nullptr_t
+#include <exception> // exception
+#if JSON_DIAGNOSTICS
+    #include <numeric> // accumulate
+#endif
+#include <stdexcept> // runtime_error
+#include <string> // to_string
+#include <vector> // vector
+
+// #include <nlohmann/detail/value_t.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t
+#include <string> // string
+
+// #include <nlohmann/detail/macro_scope.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <utility> // declval, pair
+// #include <nlohmann/detail/meta/detected.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <type_traits>
+
+// #include <nlohmann/detail/meta/void_t.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename ...Ts> struct make_void
+{
+    using type = void;
+};
+template<typename ...Ts> using void_t = typename make_void<Ts...>::type;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// https://en.cppreference.com/w/cpp/experimental/is_detected
+struct nonesuch
+{
+    nonesuch() = delete;
+    ~nonesuch() = delete;
+    nonesuch(nonesuch const&) = delete;
+    nonesuch(nonesuch const&&) = delete;
+    void operator=(nonesuch const&) = delete;
+    void operator=(nonesuch&&) = delete;
+};
+
+template<class Default,
+         class AlwaysVoid,
+         template<class...> class Op,
+         class... Args>
+struct detector
+{
+    using value_t = std::false_type;
+    using type = Default;
+};
+
+template<class Default, template<class...> class Op, class... Args>
+struct detector<Default, void_t<Op<Args...>>, Op, Args...>
+{
+    using value_t = std::true_type;
+    using type = Op<Args...>;
+};
+
+template<template<class...> class Op, class... Args>
+using is_detected = typename detector<nonesuch, void, Op, Args...>::value_t;
+
+template<template<class...> class Op, class... Args>
+struct is_detected_lazy : is_detected<Op, Args...> { };
+
+template<template<class...> class Op, class... Args>
+using detected_t = typename detector<nonesuch, void, Op, Args...>::type;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or = detector<Default, void, Op, Args...>;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or_t = typename detected_or<Default, Op, Args...>::type;
+
+template<class Expected, template<class...> class Op, class... Args>
+using is_detected_exact = std::is_same<Expected, detected_t<Op, Args...>>;
+
+template<class To, template<class...> class Op, class... Args>
+using is_detected_convertible =
+    std::is_convertible<detected_t<Op, Args...>, To>;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/thirdparty/hedley/hedley.hpp>
+
+
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2016 - 2021 Evan Nemerson <evan@nemerson.com>
+// SPDX-License-Identifier: MIT
+
+/* Hedley - https://nemequ.github.io/hedley
+ * Created by Evan Nemerson <evan@nemerson.com>
+ */
+
+#if !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < 15)
+#if defined(JSON_HEDLEY_VERSION)
+    #undef JSON_HEDLEY_VERSION
+#endif
+#define JSON_HEDLEY_VERSION 15
+
+#if defined(JSON_HEDLEY_STRINGIFY_EX)
+    #undef JSON_HEDLEY_STRINGIFY_EX
+#endif
+#define JSON_HEDLEY_STRINGIFY_EX(x) #x
+
+#if defined(JSON_HEDLEY_STRINGIFY)
+    #undef JSON_HEDLEY_STRINGIFY
+#endif
+#define JSON_HEDLEY_STRINGIFY(x) JSON_HEDLEY_STRINGIFY_EX(x)
+
+#if defined(JSON_HEDLEY_CONCAT_EX)
+    #undef JSON_HEDLEY_CONCAT_EX
+#endif
+#define JSON_HEDLEY_CONCAT_EX(a,b) a##b
+
+#if defined(JSON_HEDLEY_CONCAT)
+    #undef JSON_HEDLEY_CONCAT
+#endif
+#define JSON_HEDLEY_CONCAT(a,b) JSON_HEDLEY_CONCAT_EX(a,b)
+
+#if defined(JSON_HEDLEY_CONCAT3_EX)
+    #undef JSON_HEDLEY_CONCAT3_EX
+#endif
+#define JSON_HEDLEY_CONCAT3_EX(a,b,c) a##b##c
+
+#if defined(JSON_HEDLEY_CONCAT3)
+    #undef JSON_HEDLEY_CONCAT3
+#endif
+#define JSON_HEDLEY_CONCAT3(a,b,c) JSON_HEDLEY_CONCAT3_EX(a,b,c)
+
+#if defined(JSON_HEDLEY_VERSION_ENCODE)
+    #undef JSON_HEDLEY_VERSION_ENCODE
+#endif
+#define JSON_HEDLEY_VERSION_ENCODE(major,minor,revision) (((major) * 1000000) + ((minor) * 1000) + (revision))
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MAJOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MAJOR(version) ((version) / 1000000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MINOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MINOR(version) (((version) % 1000000) / 1000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_REVISION)
+    #undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_REVISION(version) ((version) % 1000)
+
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #undef JSON_HEDLEY_GNUC_VERSION
+#endif
+#if defined(__GNUC__) && defined(__GNUC_PATCHLEVEL__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
+#elif defined(__GNUC__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, 0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GNUC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION)
+    #undef JSON_HEDLEY_MSVC_VERSION
+#endif
+#if defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 140000000) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 10000000, (_MSC_FULL_VER % 10000000) / 100000, (_MSC_FULL_VER % 100000) / 100)
+#elif defined(_MSC_FULL_VER) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 1000000, (_MSC_FULL_VER % 1000000) / 10000, (_MSC_FULL_VER % 10000) / 10)
+#elif defined(_MSC_VER) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_VER / 100, _MSC_VER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#endif
+#if !defined(JSON_HEDLEY_MSVC_VERSION)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (0)
+#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 10000000) + (minor * 100000) + (patch)))
+#elif defined(_MSC_VER) && (_MSC_VER >= 1200)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 1000000) + (minor * 10000) + (patch)))
+#else
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_VER >= ((major * 100) + (minor)))
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #undef JSON_HEDLEY_INTEL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && !defined(__ICL)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, __INTEL_COMPILER_UPDATE)
+#elif defined(__INTEL_COMPILER) && !defined(__ICL)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
+    #undef JSON_HEDLEY_INTEL_CL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && defined(__ICL)
+    #define JSON_HEDLEY_INTEL_CL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER, __INTEL_COMPILER_UPDATE, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
+    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_CL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #undef JSON_HEDLEY_PGI_VERSION
+#endif
+#if defined(__PGI) && defined(__PGIC__) && defined(__PGIC_MINOR__) && defined(__PGIC_PATCHLEVEL__)
+    #define JSON_HEDLEY_PGI_VERSION JSON_HEDLEY_VERSION_ENCODE(__PGIC__, __PGIC_MINOR__, __PGIC_PATCHLEVEL__)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION_CHECK)
+    #undef JSON_HEDLEY_PGI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PGI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #undef JSON_HEDLEY_SUNPRO_VERSION
+#endif
+#if defined(__SUNPRO_C) && (__SUNPRO_C > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_C >> 16) & 0xf) * 10) + ((__SUNPRO_C >> 12) & 0xf), (((__SUNPRO_C >> 8) & 0xf) * 10) + ((__SUNPRO_C >> 4) & 0xf), (__SUNPRO_C & 0xf) * 10)
+#elif defined(__SUNPRO_C)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_C >> 8) & 0xf, (__SUNPRO_C >> 4) & 0xf, (__SUNPRO_C) & 0xf)
+#elif defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_CC >> 16) & 0xf) * 10) + ((__SUNPRO_CC >> 12) & 0xf), (((__SUNPRO_CC >> 8) & 0xf) * 10) + ((__SUNPRO_CC >> 4) & 0xf), (__SUNPRO_CC & 0xf) * 10)
+#elif defined(__SUNPRO_CC)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_CC >> 8) & 0xf, (__SUNPRO_CC >> 4) & 0xf, (__SUNPRO_CC) & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION_CHECK)
+    #undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_SUNPRO_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#endif
+#if defined(__EMSCRIPTEN__)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION JSON_HEDLEY_VERSION_ENCODE(__EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_EMSCRIPTEN_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #undef JSON_HEDLEY_ARM_VERSION
+#endif
+#if defined(__CC_ARM) && defined(__ARMCOMPILER_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCOMPILER_VERSION / 1000000, (__ARMCOMPILER_VERSION % 1000000) / 10000, (__ARMCOMPILER_VERSION % 10000) / 100)
+#elif defined(__CC_ARM) && defined(__ARMCC_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCC_VERSION / 1000000, (__ARMCC_VERSION % 1000000) / 10000, (__ARMCC_VERSION % 10000) / 100)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION_CHECK)
+    #undef JSON_HEDLEY_ARM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_ARM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #undef JSON_HEDLEY_IBM_VERSION
+#endif
+#if defined(__ibmxl__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ibmxl_version__, __ibmxl_release__, __ibmxl_modification__)
+#elif defined(__xlC__) && defined(__xlC_ver__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, (__xlC_ver__ >> 8) & 0xff)
+#elif defined(__xlC__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, 0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION_CHECK)
+    #undef JSON_HEDLEY_IBM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IBM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #undef JSON_HEDLEY_TI_VERSION
+#endif
+#if \
+    defined(__TI_COMPILER_VERSION__) && \
+    ( \
+      defined(__TMS470__) || defined(__TI_ARM__) || \
+      defined(__MSP430__) || \
+      defined(__TMS320C2000__) \
+    )
+#if (__TI_COMPILER_VERSION__ >= 16000000)
+    #define JSON_HEDLEY_TI_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C2000__)
+    #define JSON_HEDLEY_TI_CL2000_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL2000_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #undef JSON_HEDLEY_TI_CL430_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__MSP430__)
+    #define JSON_HEDLEY_TI_CL430_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL430_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && (defined(__TMS470__) || defined(__TI_ARM__))
+    #define JSON_HEDLEY_TI_ARMCL_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_ARMCL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C6X__)
+    #define JSON_HEDLEY_TI_CL6X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL6X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__C7000__)
+    #define JSON_HEDLEY_TI_CL7X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL7X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__PRU__)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CLPRU_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #undef JSON_HEDLEY_CRAY_VERSION
+#endif
+#if defined(_CRAYC)
+    #if defined(_RELEASE_PATCHLEVEL)
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, _RELEASE_PATCHLEVEL)
+    #else
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION_CHECK)
+    #undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_CRAY_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #undef JSON_HEDLEY_IAR_VERSION
+#endif
+#if defined(__IAR_SYSTEMS_ICC__)
+    #if __VER__ > 1000
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE((__VER__ / 1000000), ((__VER__ / 1000) % 1000), (__VER__ % 1000))
+    #else
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE(__VER__ / 100, __VER__ % 100, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION_CHECK)
+    #undef JSON_HEDLEY_IAR_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IAR_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #undef JSON_HEDLEY_TINYC_VERSION
+#endif
+#if defined(__TINYC__)
+    #define JSON_HEDLEY_TINYC_VERSION JSON_HEDLEY_VERSION_ENCODE(__TINYC__ / 1000, (__TINYC__ / 100) % 10, __TINYC__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION_CHECK)
+    #undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TINYC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #undef JSON_HEDLEY_DMC_VERSION
+#endif
+#if defined(__DMC__)
+    #define JSON_HEDLEY_DMC_VERSION JSON_HEDLEY_VERSION_ENCODE(__DMC__ >> 8, (__DMC__ >> 4) & 0xf, __DMC__ & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION_CHECK)
+    #undef JSON_HEDLEY_DMC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_DMC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #undef JSON_HEDLEY_COMPCERT_VERSION
+#endif
+#if defined(__COMPCERT_VERSION__)
+    #define JSON_HEDLEY_COMPCERT_VERSION JSON_HEDLEY_VERSION_ENCODE(__COMPCERT_VERSION__ / 10000, (__COMPCERT_VERSION__ / 100) % 100, __COMPCERT_VERSION__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION_CHECK)
+    #undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_COMPCERT_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #undef JSON_HEDLEY_PELLES_VERSION
+#endif
+#if defined(__POCC__)
+    #define JSON_HEDLEY_PELLES_VERSION JSON_HEDLEY_VERSION_ENCODE(__POCC__ / 100, __POCC__ % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION_CHECK)
+    #undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PELLES_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #undef JSON_HEDLEY_MCST_LCC_VERSION
+#endif
+#if defined(__LCC__) && defined(__LCC_MINOR__)
+    #define JSON_HEDLEY_MCST_LCC_VERSION JSON_HEDLEY_VERSION_ENCODE(__LCC__ / 100, __LCC__ % 100, __LCC_MINOR__)
+#endif
+
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_MCST_LCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #undef JSON_HEDLEY_GCC_VERSION
+#endif
+#if \
+    defined(JSON_HEDLEY_GNUC_VERSION) && \
+    !defined(__clang__) && \
+    !defined(JSON_HEDLEY_INTEL_VERSION) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_ARM_VERSION) && \
+    !defined(JSON_HEDLEY_CRAY_VERSION) && \
+    !defined(JSON_HEDLEY_TI_VERSION) && \
+    !defined(JSON_HEDLEY_TI_ARMCL_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL430_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL2000_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL6X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL7X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CLPRU_VERSION) && \
+    !defined(__COMPCERT__) && \
+    !defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION JSON_HEDLEY_GNUC_VERSION
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_ATTRIBUTE
+#endif
+#if \
+  defined(__has_attribute) && \
+  ( \
+    (!defined(JSON_HEDLEY_IAR_VERSION) || JSON_HEDLEY_IAR_VERSION_CHECK(8,5,9)) \
+  )
+#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) __has_attribute(attribute)
+#else
+#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#endif
+#if \
+    defined(__has_cpp_attribute) && \
+    defined(__cplusplus) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#endif
+#if !defined(__cplusplus) || !defined(__has_cpp_attribute)
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#elif \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_IAR_VERSION) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0)) && \
+    (!defined(JSON_HEDLEY_MSVC_VERSION) || JSON_HEDLEY_MSVC_VERSION_CHECK(19,20,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(ns::attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_BUILTIN)
+    #undef JSON_HEDLEY_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_FEATURE)
+    #undef JSON_HEDLEY_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_HAS_FEATURE(feature) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_HAS_FEATURE(feature) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GCC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_EXTENSION)
+    #undef JSON_HEDLEY_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_WARNING)
+    #undef JSON_HEDLEY_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_HAS_WARNING(warning) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_HAS_WARNING(warning) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_WARNING)
+    #undef JSON_HEDLEY_GNUC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_WARNING)
+    #undef JSON_HEDLEY_GCC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,17) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(8,0,0) || \
+    (JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) && defined(__C99_PRAGMA_OPERATOR))
+    #define JSON_HEDLEY_PRAGMA(value) _Pragma(#value)
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_PRAGMA(value) __pragma(value)
+#else
+    #define JSON_HEDLEY_PRAGMA(value)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_PUSH)
+    #undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#endif
+#if defined(JSON_HEDLEY_DIAGNOSTIC_POP)
+    #undef JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("clang diagnostic pop")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH __pragma(warning(push))
+    #define JSON_HEDLEY_DIAGNOSTIC_POP __pragma(warning(pop))
+#elif JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("pop")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,4,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("diag_push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("diag_pop")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH
+    #define JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+
+/* JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat")
+#    if JSON_HEDLEY_HAS_WARNING("-Wc++17-extensions")
+#      if JSON_HEDLEY_HAS_WARNING("-Wc++1z-extensions")
+#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++1z-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#      else
+#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#      endif
+#    else
+#      define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    endif
+#  endif
+#endif
+#if !defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(x) x
+#endif
+
+#if defined(JSON_HEDLEY_CONST_CAST)
+    #undef JSON_HEDLEY_CONST_CAST
+#endif
+#if defined(__cplusplus)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (const_cast<T>(expr))
+#elif \
+  JSON_HEDLEY_HAS_WARNING("-Wcast-qual") || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_CONST_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_REINTERPRET_CAST)
+    #undef JSON_HEDLEY_REINTERPRET_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) (reinterpret_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_CAST)
+    #undef JSON_HEDLEY_STATIC_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) (static_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_CPP_CAST)
+    #undef JSON_HEDLEY_CPP_CAST
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wold-style-cast")
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wold-style-cast\"") \
+    ((T) (expr)) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  elif JSON_HEDLEY_IAR_VERSION_CHECK(8,3,0)
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("diag_suppress=Pe137") \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_CPP_CAST(T, expr) ((T) (expr))
+#  endif
+#else
+#  define JSON_HEDLEY_CPP_CAST(T, expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wdeprecated-declarations")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warning(disable:1478 1786)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:1478 1786))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1216,1444,1445")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:4996))
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1291,1718")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,E_DEPRECATED_ATT,E_DEPRECATED_ATT_MESS)")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,symdeprecated,symdeprecated2)")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress=Pe1444,Pe1215")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warn(disable:2241)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("warning(disable:161)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:161))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 1675")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("GCC diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:4068))
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(16,9,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress=Pe161")
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 161")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-attributes")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("clang diagnostic ignored \"-Wunknown-attributes\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("warning(disable:1292)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:1292))
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:5030))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097,1098")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("error_messages(off,attrskipunsup)")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1173")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress=Pe1097")
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wcast-qual")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("warning(disable:2203 2331)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunused-function")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("clang diagnostic ignored \"-Wunused-function\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("GCC diagnostic ignored \"-Wunused-function\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(1,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION __pragma(warning(disable:4505))
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("diag_suppress 3142")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#endif
+
+#if defined(JSON_HEDLEY_DEPRECATED)
+    #undef JSON_HEDLEY_DEPRECATED
+#endif
+#if defined(JSON_HEDLEY_DEPRECATED_FOR)
+    #undef JSON_HEDLEY_DEPRECATED_FOR
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated("Since " # since))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated("Since " #since "; use " #replacement))
+#elif \
+    (JSON_HEDLEY_HAS_EXTENSION(attribute_deprecated_with_message) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__("Since " #since)))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__("Since " #since "; use " #replacement)))
+#elif defined(__cplusplus) && (__cplusplus >= 201402L)
+    #define JSON_HEDLEY_DEPRECATED(since) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since)]])
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since "; use " #replacement)]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(deprecated) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_PELLES_VERSION_CHECK(6,50,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DEPRECATED(since) _Pragma("deprecated")
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) _Pragma("deprecated")
+#else
+    #define JSON_HEDLEY_DEPRECATED(since)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement)
+#endif
+
+#if defined(JSON_HEDLEY_UNAVAILABLE)
+    #undef JSON_HEDLEY_UNAVAILABLE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warning) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_UNAVAILABLE(available_since) __attribute__((__warning__("Not available until " #available_since)))
+#else
+    #define JSON_HEDLEY_UNAVAILABLE(available_since)
+#endif
+
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#endif
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT_MSG)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warn_unused_result) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) __attribute__((__warn_unused_result__))
+#elif (JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard) >= 201907L)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard(msg)]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+#elif defined(_Check_return_) /* SAL */
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT _Check_return_
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) _Check_return_
+#else
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg)
+#endif
+
+#if defined(JSON_HEDLEY_SENTINEL)
+    #undef JSON_HEDLEY_SENTINEL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(sentinel) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_SENTINEL(position) __attribute__((__sentinel__(position)))
+#else
+    #define JSON_HEDLEY_SENTINEL(position)
+#endif
+
+#if defined(JSON_HEDLEY_NO_RETURN)
+    #undef JSON_HEDLEY_NO_RETURN
+#endif
+#if JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NO_RETURN __noreturn
+#elif \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+    #define JSON_HEDLEY_NO_RETURN _Noreturn
+#elif defined(__cplusplus) && (__cplusplus >= 201103L)
+    #define JSON_HEDLEY_NO_RETURN JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[noreturn]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noreturn) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,2,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("does_not_return")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("FUNC_NEVER_RETURNS;")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute((noreturn))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#else
+    #define JSON_HEDLEY_NO_RETURN
+#endif
+
+#if defined(JSON_HEDLEY_NO_ESCAPE)
+    #undef JSON_HEDLEY_NO_ESCAPE
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(noescape)
+    #define JSON_HEDLEY_NO_ESCAPE __attribute__((__noescape__))
+#else
+    #define JSON_HEDLEY_NO_ESCAPE
+#endif
+
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #undef JSON_HEDLEY_UNREACHABLE
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE_RETURN)
+    #undef JSON_HEDLEY_UNREACHABLE_RETURN
+#endif
+#if defined(JSON_HEDLEY_ASSUME)
+    #undef JSON_HEDLEY_ASSUME
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_ASSUME(expr) __assume(expr)
+#elif JSON_HEDLEY_HAS_BUILTIN(__builtin_assume)
+    #define JSON_HEDLEY_ASSUME(expr) __builtin_assume(expr)
+#elif \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+    #if defined(__cplusplus)
+        #define JSON_HEDLEY_ASSUME(expr) std::_nassert(expr)
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) _nassert(expr)
+    #endif
+#endif
+#if \
+    (JSON_HEDLEY_HAS_BUILTIN(__builtin_unreachable) && (!defined(JSON_HEDLEY_ARM_VERSION))) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,5) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(10,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_UNREACHABLE() __builtin_unreachable()
+#elif defined(JSON_HEDLEY_ASSUME)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+#if !defined(JSON_HEDLEY_ASSUME)
+    #if defined(JSON_HEDLEY_UNREACHABLE)
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, ((expr) ? 1 : (JSON_HEDLEY_UNREACHABLE(), 1)))
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, expr)
+    #endif
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #if  \
+        JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (JSON_HEDLEY_STATIC_CAST(void, JSON_HEDLEY_ASSUME(0)), (value))
+    #else
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) JSON_HEDLEY_UNREACHABLE()
+    #endif
+#else
+    #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (value)
+#endif
+#if !defined(JSON_HEDLEY_UNREACHABLE)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+
+JSON_HEDLEY_DIAGNOSTIC_PUSH
+#if JSON_HEDLEY_HAS_WARNING("-Wpedantic")
+    #pragma clang diagnostic ignored "-Wpedantic"
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat-pedantic") && defined(__cplusplus)
+    #pragma clang diagnostic ignored "-Wc++98-compat-pedantic"
+#endif
+#if JSON_HEDLEY_GCC_HAS_WARNING("-Wvariadic-macros",4,0,0)
+    #if defined(__clang__)
+        #pragma clang diagnostic ignored "-Wvariadic-macros"
+    #elif defined(JSON_HEDLEY_GCC_VERSION)
+        #pragma GCC diagnostic ignored "-Wvariadic-macros"
+    #endif
+#endif
+#if defined(JSON_HEDLEY_NON_NULL)
+    #undef JSON_HEDLEY_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NON_NULL(...) __attribute__((__nonnull__(__VA_ARGS__)))
+#else
+    #define JSON_HEDLEY_NON_NULL(...)
+#endif
+JSON_HEDLEY_DIAGNOSTIC_POP
+
+#if defined(JSON_HEDLEY_PRINTF_FORMAT)
+    #undef JSON_HEDLEY_PRINTF_FORMAT
+#endif
+#if defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && !defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(ms_printf, string_idx, first_to_check)))
+#elif defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(gnu_printf, string_idx, first_to_check)))
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(format) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(__printf__, string_idx, first_to_check)))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(6,0,0)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __declspec(vaformat(printf,string_idx,first_to_check))
+#else
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check)
+#endif
+
+#if defined(JSON_HEDLEY_CONSTEXPR)
+    #undef JSON_HEDLEY_CONSTEXPR
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_CONSTEXPR JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(constexpr)
+    #endif
+#endif
+#if !defined(JSON_HEDLEY_CONSTEXPR)
+    #define JSON_HEDLEY_CONSTEXPR
+#endif
+
+#if defined(JSON_HEDLEY_PREDICT)
+    #undef JSON_HEDLEY_PREDICT
+#endif
+#if defined(JSON_HEDLEY_LIKELY)
+    #undef JSON_HEDLEY_LIKELY
+#endif
+#if defined(JSON_HEDLEY_UNLIKELY)
+    #undef JSON_HEDLEY_UNLIKELY
+#endif
+#if defined(JSON_HEDLEY_UNPREDICTABLE)
+    #undef JSON_HEDLEY_UNPREDICTABLE
+#endif
+#if JSON_HEDLEY_HAS_BUILTIN(__builtin_unpredictable)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) __builtin_unpredictable((expr))
+#endif
+#if \
+  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect_with_probability) && !defined(JSON_HEDLEY_PGI_VERSION)) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(9,0,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PREDICT(expr, value, probability) __builtin_expect_with_probability(  (expr), (value), (probability))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability)   __builtin_expect_with_probability(!!(expr),    1   , (probability))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability)  __builtin_expect_with_probability(!!(expr),    0   , (probability))
+#  define JSON_HEDLEY_LIKELY(expr)                      __builtin_expect                 (!!(expr),    1                  )
+#  define JSON_HEDLEY_UNLIKELY(expr)                    __builtin_expect                 (!!(expr),    0                  )
+#elif \
+  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,27) || \
+  JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) \
+    (((probability) >= 0.9) ? __builtin_expect((expr), (expected)) : (JSON_HEDLEY_STATIC_CAST(void, expected), (expr)))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 1) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 0) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 0) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 1) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_LIKELY(expr)   __builtin_expect(!!(expr), 1)
+#  define JSON_HEDLEY_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
+#else
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) (JSON_HEDLEY_STATIC_CAST(void, expected), (expr))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_LIKELY(expr) (!!(expr))
+#  define JSON_HEDLEY_UNLIKELY(expr) (!!(expr))
+#endif
+#if !defined(JSON_HEDLEY_UNPREDICTABLE)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) JSON_HEDLEY_PREDICT(expr, 1, 0.5)
+#endif
+
+#if defined(JSON_HEDLEY_MALLOC)
+    #undef JSON_HEDLEY_MALLOC
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(malloc) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_MALLOC __attribute__((__malloc__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_MALLOC _Pragma("returns_new_memory")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_MALLOC __declspec(restrict)
+#else
+    #define JSON_HEDLEY_MALLOC
+#endif
+
+#if defined(JSON_HEDLEY_PURE)
+    #undef JSON_HEDLEY_PURE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(pure) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(2,96,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PURE __attribute__((__pure__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+#  define JSON_HEDLEY_PURE _Pragma("does_not_write_global_data")
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) \
+    )
+#  define JSON_HEDLEY_PURE _Pragma("FUNC_IS_PURE;")
+#else
+#  define JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_CONST)
+    #undef JSON_HEDLEY_CONST
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(const) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(2,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_CONST __attribute__((__const__))
+#elif \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_CONST _Pragma("no_side_effect")
+#else
+    #define JSON_HEDLEY_CONST JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_RESTRICT)
+    #undef JSON_HEDLEY_RESTRICT
+#endif
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT restrict
+#elif \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,4) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_RESTRICT __restrict
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,3,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT _Restrict
+#else
+    #define JSON_HEDLEY_RESTRICT
+#endif
+
+#if defined(JSON_HEDLEY_INLINE)
+    #undef JSON_HEDLEY_INLINE
+#endif
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    (defined(__cplusplus) && (__cplusplus >= 199711L))
+    #define JSON_HEDLEY_INLINE inline
+#elif \
+    defined(JSON_HEDLEY_GCC_VERSION) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(6,2,0)
+    #define JSON_HEDLEY_INLINE __inline__
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,1,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_INLINE __inline
+#else
+    #define JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_ALWAYS_INLINE)
+    #undef JSON_HEDLEY_ALWAYS_INLINE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(always_inline) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+  JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __attribute__((__always_inline__)) JSON_HEDLEY_INLINE
+#elif \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __forceinline
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+      JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+      JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) \
+    )
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("FUNC_ALWAYS_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("inline=forced")
+#else
+#  define JSON_HEDLEY_ALWAYS_INLINE JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_NEVER_INLINE)
+    #undef JSON_HEDLEY_NEVER_INLINE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noinline) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute__((__noinline__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(10,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("noinline")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("FUNC_CANNOT_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("inline=never")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute((noinline))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#else
+    #define JSON_HEDLEY_NEVER_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_PRIVATE)
+    #undef JSON_HEDLEY_PRIVATE
+#endif
+#if defined(JSON_HEDLEY_PUBLIC)
+    #undef JSON_HEDLEY_PUBLIC
+#endif
+#if defined(JSON_HEDLEY_IMPORT)
+    #undef JSON_HEDLEY_IMPORT
+#endif
+#if defined(_WIN32) || defined(__CYGWIN__)
+#  define JSON_HEDLEY_PRIVATE
+#  define JSON_HEDLEY_PUBLIC   __declspec(dllexport)
+#  define JSON_HEDLEY_IMPORT   __declspec(dllimport)
+#else
+#  if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(visibility) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    ( \
+      defined(__TI_EABI__) && \
+      ( \
+        (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) \
+      ) \
+    ) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#    define JSON_HEDLEY_PRIVATE __attribute__((__visibility__("hidden")))
+#    define JSON_HEDLEY_PUBLIC  __attribute__((__visibility__("default")))
+#  else
+#    define JSON_HEDLEY_PRIVATE
+#    define JSON_HEDLEY_PUBLIC
+#  endif
+#  define JSON_HEDLEY_IMPORT    extern
+#endif
+
+#if defined(JSON_HEDLEY_NO_THROW)
+    #undef JSON_HEDLEY_NO_THROW
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nothrow) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_NO_THROW __attribute__((__nothrow__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NO_THROW __declspec(nothrow)
+#else
+    #define JSON_HEDLEY_NO_THROW
+#endif
+
+#if defined(JSON_HEDLEY_FALL_THROUGH)
+    #undef JSON_HEDLEY_FALL_THROUGH
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(fallthrough) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_FALL_THROUGH __attribute__((__fallthrough__))
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(clang,fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[clang::fallthrough]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[fallthrough]])
+#elif defined(__fallthrough) /* SAL */
+    #define JSON_HEDLEY_FALL_THROUGH __fallthrough
+#else
+    #define JSON_HEDLEY_FALL_THROUGH
+#endif
+
+#if defined(JSON_HEDLEY_RETURNS_NON_NULL)
+    #undef JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(returns_nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_RETURNS_NON_NULL __attribute__((__returns_nonnull__))
+#elif defined(_Ret_notnull_) /* SAL */
+    #define JSON_HEDLEY_RETURNS_NON_NULL _Ret_notnull_
+#else
+    #define JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+
+#if defined(JSON_HEDLEY_ARRAY_PARAM)
+    #undef JSON_HEDLEY_ARRAY_PARAM
+#endif
+#if \
+    defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
+    !defined(__STDC_NO_VLA__) && \
+    !defined(__cplusplus) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_ARRAY_PARAM(name) (name)
+#else
+    #define JSON_HEDLEY_ARRAY_PARAM(name)
+#endif
+
+#if defined(JSON_HEDLEY_IS_CONSTANT)
+    #undef JSON_HEDLEY_IS_CONSTANT
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_CONSTEXPR)
+    #undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#endif
+/* JSON_HEDLEY_IS_CONSTEXPR_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #undef JSON_HEDLEY_IS_CONSTEXPR_
+#endif
+#if \
+    JSON_HEDLEY_HAS_BUILTIN(__builtin_constant_p) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,19) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0) && !defined(__cplusplus)) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_IS_CONSTANT(expr) __builtin_constant_p(expr)
+#endif
+#if !defined(__cplusplus)
+#  if \
+       JSON_HEDLEY_HAS_BUILTIN(__builtin_types_compatible_p) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+       JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+       JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,24)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0)), int*)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((intptr_t) ((expr) * 0)) : (int*) 0)), int*)
+#endif
+#  elif \
+       ( \
+          defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) && \
+          !defined(JSON_HEDLEY_SUNPRO_VERSION) && \
+          !defined(JSON_HEDLEY_PGI_VERSION) && \
+          !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       (JSON_HEDLEY_HAS_EXTENSION(c_generic_selections) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,3,0)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0), int*: 1, void*: 0)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((intptr_t) * 0) : (int*) 0), int*: 1, void*: 0)
+#endif
+#  elif \
+       defined(JSON_HEDLEY_GCC_VERSION) || \
+       defined(JSON_HEDLEY_INTEL_VERSION) || \
+       defined(JSON_HEDLEY_TINYC_VERSION) || \
+       defined(JSON_HEDLEY_TI_ARMCL_VERSION) || \
+       JSON_HEDLEY_TI_CL430_VERSION_CHECK(18,12,0) || \
+       defined(JSON_HEDLEY_TI_CL2000_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL6X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL7X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CLPRU_VERSION) || \
+       defined(__clang__)
+#    define JSON_HEDLEY_IS_CONSTEXPR_(expr) ( \
+        sizeof(void) != \
+        sizeof(*( \
+                  1 ? \
+                  ((void*) ((expr) * 0L) ) : \
+((struct { char v[sizeof(void) * 2]; } *) 1) \
+                ) \
+              ) \
+                                            )
+#  endif
+#endif
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) JSON_HEDLEY_IS_CONSTEXPR_(expr)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (JSON_HEDLEY_IS_CONSTEXPR_(expr) ? (expr) : (-1))
+#else
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) (0)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_BEGIN_C_DECLS)
+    #undef JSON_HEDLEY_BEGIN_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_END_C_DECLS)
+    #undef JSON_HEDLEY_END_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_C_DECL)
+    #undef JSON_HEDLEY_C_DECL
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_BEGIN_C_DECLS extern "C" {
+    #define JSON_HEDLEY_END_C_DECLS }
+    #define JSON_HEDLEY_C_DECL extern "C"
+#else
+    #define JSON_HEDLEY_BEGIN_C_DECLS
+    #define JSON_HEDLEY_END_C_DECLS
+    #define JSON_HEDLEY_C_DECL
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_ASSERT)
+    #undef JSON_HEDLEY_STATIC_ASSERT
+#endif
+#if \
+  !defined(__cplusplus) && ( \
+      (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)) || \
+      (JSON_HEDLEY_HAS_FEATURE(c_static_assert) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
+      JSON_HEDLEY_GCC_VERSION_CHECK(6,0,0) || \
+      JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+      defined(_Static_assert) \
+    )
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) _Static_assert(expr, message)
+#elif \
+  (defined(__cplusplus) && (__cplusplus >= 201103L)) || \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(16,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(static_assert(expr, message))
+#else
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message)
+#endif
+
+#if defined(JSON_HEDLEY_NULL)
+    #undef JSON_HEDLEY_NULL
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(nullptr)
+    #elif defined(NULL)
+        #define JSON_HEDLEY_NULL NULL
+    #else
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_STATIC_CAST(void*, 0)
+    #endif
+#elif defined(NULL)
+    #define JSON_HEDLEY_NULL NULL
+#else
+    #define JSON_HEDLEY_NULL ((void*) 0)
+#endif
+
+#if defined(JSON_HEDLEY_MESSAGE)
+    #undef JSON_HEDLEY_MESSAGE
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_MESSAGE(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(message msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message msg)
+#elif JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(_CRI message msg)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_WARNING)
+    #undef JSON_HEDLEY_WARNING
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_WARNING(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(clang warning msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,8,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(GCC warning msg)
+#elif \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_REQUIRE)
+    #undef JSON_HEDLEY_REQUIRE
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_MSG)
+    #undef JSON_HEDLEY_REQUIRE_MSG
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(diagnose_if)
+#  if JSON_HEDLEY_HAS_WARNING("-Wgcc-compat")
+#    define JSON_HEDLEY_REQUIRE(expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), #expr, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), msg, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_REQUIRE(expr) __attribute__((diagnose_if(!(expr), #expr, "error")))
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) __attribute__((diagnose_if(!(expr), msg, "error")))
+#  endif
+#else
+#  define JSON_HEDLEY_REQUIRE(expr)
+#  define JSON_HEDLEY_REQUIRE_MSG(expr,msg)
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS)
+    #undef JSON_HEDLEY_FLAGS
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(flag_enum) && (!defined(__cplusplus) || JSON_HEDLEY_HAS_WARNING("-Wbitfield-enum-conversion"))
+    #define JSON_HEDLEY_FLAGS __attribute__((__flag_enum__))
+#else
+    #define JSON_HEDLEY_FLAGS
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS_CAST)
+    #undef JSON_HEDLEY_FLAGS_CAST
+#endif
+#if JSON_HEDLEY_INTEL_VERSION_CHECK(19,0,0)
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        _Pragma("warning(disable:188)") \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) JSON_HEDLEY_STATIC_CAST(T, expr)
+#endif
+
+#if defined(JSON_HEDLEY_EMPTY_BASES)
+    #undef JSON_HEDLEY_EMPTY_BASES
+#endif
+#if \
+    (JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,23918) && !JSON_HEDLEY_MSVC_VERSION_CHECK(20,0,0)) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_EMPTY_BASES __declspec(empty_bases)
+#else
+    #define JSON_HEDLEY_EMPTY_BASES
+#endif
+
+/* Remaining macros are deprecated. */
+
+#if defined(JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) (0)
+#else
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_CLANG_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_BUILTIN)
+    #undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#endif
+#define JSON_HEDLEY_CLANG_HAS_BUILTIN(builtin) JSON_HEDLEY_HAS_BUILTIN(builtin)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_FEATURE)
+    #undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_FEATURE(feature) JSON_HEDLEY_HAS_FEATURE(feature)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_EXTENSION)
+    #undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#endif
+#define JSON_HEDLEY_CLANG_HAS_EXTENSION(extension) JSON_HEDLEY_HAS_EXTENSION(extension)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_DECLSPEC_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_WARNING)
+    #undef JSON_HEDLEY_CLANG_HAS_WARNING
+#endif
+#define JSON_HEDLEY_CLANG_HAS_WARNING(warning) JSON_HEDLEY_HAS_WARNING(warning)
+
+#endif /* !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < X) */
+
+
+// This file contains all internal macro definitions (except those affecting ABI)
+// You MUST include macro_unscope.hpp at the end of json.hpp to undef all of them
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+// exclude unsupported compilers
+#if !defined(JSON_SKIP_UNSUPPORTED_COMPILER_CHECK)
+    #if defined(__clang__)
+        #if (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__) < 30400
+            #error "unsupported Clang version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #elif defined(__GNUC__) && !(defined(__ICC) || defined(__INTEL_COMPILER))
+        #if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40800
+            #error "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #endif
+#endif
+
+// C++ language standard detection
+// if the user manually specified the used c++ version this is skipped
+#if !defined(JSON_HAS_CPP_20) && !defined(JSON_HAS_CPP_17) && !defined(JSON_HAS_CPP_14) && !defined(JSON_HAS_CPP_11)
+    #if (defined(__cplusplus) && __cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
+        #define JSON_HAS_CPP_20
+        #define JSON_HAS_CPP_17
+        #define JSON_HAS_CPP_14
+    #elif (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_HAS_CXX17) && _HAS_CXX17 == 1) // fix for issue #464
+        #define JSON_HAS_CPP_17
+        #define JSON_HAS_CPP_14
+    #elif (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
+        #define JSON_HAS_CPP_14
+    #endif
+    // the cpp 11 flag is always specified because it is the minimal required version
+    #define JSON_HAS_CPP_11
+#endif
+
+#ifdef __has_include
+    #if __has_include(<version>)
+        #include <version>
+    #endif
+#endif
+
+#if !defined(JSON_HAS_FILESYSTEM) && !defined(JSON_HAS_EXPERIMENTAL_FILESYSTEM)
+    #ifdef JSON_HAS_CPP_17
+        #if defined(__cpp_lib_filesystem)
+            #define JSON_HAS_FILESYSTEM 1
+        #elif defined(__cpp_lib_experimental_filesystem)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #elif !defined(__has_include)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #elif __has_include(<filesystem>)
+            #define JSON_HAS_FILESYSTEM 1
+        #elif __has_include(<experimental/filesystem>)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #endif
+
+        // std::filesystem does not work on MinGW GCC 8: https://sourceforge.net/p/mingw-w64/bugs/737/
+        #if defined(__MINGW32__) && defined(__GNUC__) && __GNUC__ == 8
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before GCC 8: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 8
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before Clang 7: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(__clang_major__) && __clang_major__ < 7
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before MSVC 19.14: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(_MSC_VER) && _MSC_VER < 1914
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before iOS 13
+        #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 130000
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before macOS Catalina
+        #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101500
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+    #endif
+#endif
+
+#ifndef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+    #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 0
+#endif
+
+#ifndef JSON_HAS_FILESYSTEM
+    #define JSON_HAS_FILESYSTEM 0
+#endif
+
+#ifndef JSON_HAS_THREE_WAY_COMPARISON
+    #if defined(__cpp_impl_three_way_comparison) && __cpp_impl_three_way_comparison >= 201907L \
+        && defined(__cpp_lib_three_way_comparison) && __cpp_lib_three_way_comparison >= 201907L
+        #define JSON_HAS_THREE_WAY_COMPARISON 1
+    #else
+        #define JSON_HAS_THREE_WAY_COMPARISON 0
+    #endif
+#endif
+
+#ifndef JSON_HAS_RANGES
+    // ranges header shipping in GCC 11.1.0 (released 2021-04-27) has syntax error
+    #if defined(__GLIBCXX__) && __GLIBCXX__ == 20210427
+        #define JSON_HAS_RANGES 0
+    #elif defined(__cpp_lib_ranges)
+        #define JSON_HAS_RANGES 1
+    #else
+        #define JSON_HAS_RANGES 0
+    #endif
+#endif
+
+#ifndef JSON_HAS_STATIC_RTTI
+    #if !defined(_HAS_STATIC_RTTI) || _HAS_STATIC_RTTI != 0
+        #define JSON_HAS_STATIC_RTTI 1
+    #else
+        #define JSON_HAS_STATIC_RTTI 0
+    #endif
+#endif
+
+#ifdef JSON_HAS_CPP_17
+    #define JSON_INLINE_VARIABLE inline
+#else
+    #define JSON_INLINE_VARIABLE
+#endif
+
+#if JSON_HEDLEY_HAS_ATTRIBUTE(no_unique_address)
+    #define JSON_NO_UNIQUE_ADDRESS [[no_unique_address]]
+#else
+    #define JSON_NO_UNIQUE_ADDRESS
+#endif
+
+// disable documentation warnings on clang
+#if defined(__clang__)
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wdocumentation"
+    #pragma clang diagnostic ignored "-Wdocumentation-unknown-command"
+#endif
+
+// allow disabling exceptions
+#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
+    #define JSON_THROW(exception) throw exception
+    #define JSON_TRY try
+    #define JSON_CATCH(exception) catch(exception)
+    #define JSON_INTERNAL_CATCH(exception) catch(exception)
+#else
+    #include <cstdlib>
+    #define JSON_THROW(exception) std::abort()
+    #define JSON_TRY if(true)
+    #define JSON_CATCH(exception) if(false)
+    #define JSON_INTERNAL_CATCH(exception) if(false)
+#endif
+
+// override exception macros
+#if defined(JSON_THROW_USER)
+    #undef JSON_THROW
+    #define JSON_THROW JSON_THROW_USER
+#endif
+#if defined(JSON_TRY_USER)
+    #undef JSON_TRY
+    #define JSON_TRY JSON_TRY_USER
+#endif
+#if defined(JSON_CATCH_USER)
+    #undef JSON_CATCH
+    #define JSON_CATCH JSON_CATCH_USER
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_CATCH_USER
+#endif
+#if defined(JSON_INTERNAL_CATCH_USER)
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_INTERNAL_CATCH_USER
+#endif
+
+// allow overriding assert
+#if !defined(JSON_ASSERT)
+    #include <cassert> // assert
+    #define JSON_ASSERT(x) assert(x)
+#endif
+
+// allow to access some private functions (needed by the test suite)
+#if defined(JSON_TESTS_PRIVATE)
+    #define JSON_PRIVATE_UNLESS_TESTED public
+#else
+    #define JSON_PRIVATE_UNLESS_TESTED private
+#endif
+
+/*!
+@brief macro to briefly define a mapping between an enum and JSON
+@def NLOHMANN_JSON_SERIALIZE_ENUM
+@since version 3.4.0
+*/
+#define NLOHMANN_JSON_SERIALIZE_ENUM(ENUM_TYPE, ...)                                            \
+    template<typename BasicJsonType>                                                            \
+    inline void to_json(BasicJsonType& j, const ENUM_TYPE& e)                                   \
+    {                                                                                           \
+        /* NOLINTNEXTLINE(modernize-type-traits) we use C++11 */                                \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        /* NOLINTNEXTLINE(modernize-avoid-c-arrays) we don't want to depend on <array> */       \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [e](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool  \
+        {                                                                                       \
+            return ej_pair.first == e;                                                          \
+        });                                                                                     \
+        j = ((it != std::end(m)) ? it : std::begin(m))->second;                                 \
+    }                                                                                           \
+    template<typename BasicJsonType>                                                            \
+    inline void from_json(const BasicJsonType& j, ENUM_TYPE& e)                                 \
+    {                                                                                           \
+        /* NOLINTNEXTLINE(modernize-type-traits) we use C++11 */                                \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        /* NOLINTNEXTLINE(modernize-avoid-c-arrays) we don't want to depend on <array> */       \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [&j](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool \
+        {                                                                                       \
+            return ej_pair.second == j;                                                         \
+        });                                                                                     \
+        e = ((it != std::end(m)) ? it : std::begin(m))->first;                                  \
+    }
+
+// Ugly macros to avoid uglier copy-paste when specializing basic_json. They
+// may be removed in the future once the class is split.
+
+#define NLOHMANN_BASIC_JSON_TPL_DECLARATION                                \
+    template<template<typename, typename, typename...> class ObjectType,   \
+             template<typename, typename...> class ArrayType,              \
+             class StringType, class BooleanType, class NumberIntegerType, \
+             class NumberUnsignedType, class NumberFloatType,              \
+             template<typename> class AllocatorType,                       \
+             template<typename, typename = void> class JSONSerializer,     \
+             class BinaryType,                                             \
+             class CustomBaseClass>
+
+#define NLOHMANN_BASIC_JSON_TPL                                            \
+    basic_json<ObjectType, ArrayType, StringType, BooleanType,             \
+    NumberIntegerType, NumberUnsignedType, NumberFloatType,                \
+    AllocatorType, JSONSerializer, BinaryType, CustomBaseClass>
+
+// Macros to simplify conversion from/to types
+
+#define NLOHMANN_JSON_EXPAND( x ) x
+#define NLOHMANN_JSON_GET_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, _64, NAME,...) NAME
+#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \
+        NLOHMANN_JSON_PASTE64, \
+        NLOHMANN_JSON_PASTE63, \
+        NLOHMANN_JSON_PASTE62, \
+        NLOHMANN_JSON_PASTE61, \
+        NLOHMANN_JSON_PASTE60, \
+        NLOHMANN_JSON_PASTE59, \
+        NLOHMANN_JSON_PASTE58, \
+        NLOHMANN_JSON_PASTE57, \
+        NLOHMANN_JSON_PASTE56, \
+        NLOHMANN_JSON_PASTE55, \
+        NLOHMANN_JSON_PASTE54, \
+        NLOHMANN_JSON_PASTE53, \
+        NLOHMANN_JSON_PASTE52, \
+        NLOHMANN_JSON_PASTE51, \
+        NLOHMANN_JSON_PASTE50, \
+        NLOHMANN_JSON_PASTE49, \
+        NLOHMANN_JSON_PASTE48, \
+        NLOHMANN_JSON_PASTE47, \
+        NLOHMANN_JSON_PASTE46, \
+        NLOHMANN_JSON_PASTE45, \
+        NLOHMANN_JSON_PASTE44, \
+        NLOHMANN_JSON_PASTE43, \
+        NLOHMANN_JSON_PASTE42, \
+        NLOHMANN_JSON_PASTE41, \
+        NLOHMANN_JSON_PASTE40, \
+        NLOHMANN_JSON_PASTE39, \
+        NLOHMANN_JSON_PASTE38, \
+        NLOHMANN_JSON_PASTE37, \
+        NLOHMANN_JSON_PASTE36, \
+        NLOHMANN_JSON_PASTE35, \
+        NLOHMANN_JSON_PASTE34, \
+        NLOHMANN_JSON_PASTE33, \
+        NLOHMANN_JSON_PASTE32, \
+        NLOHMANN_JSON_PASTE31, \
+        NLOHMANN_JSON_PASTE30, \
+        NLOHMANN_JSON_PASTE29, \
+        NLOHMANN_JSON_PASTE28, \
+        NLOHMANN_JSON_PASTE27, \
+        NLOHMANN_JSON_PASTE26, \
+        NLOHMANN_JSON_PASTE25, \
+        NLOHMANN_JSON_PASTE24, \
+        NLOHMANN_JSON_PASTE23, \
+        NLOHMANN_JSON_PASTE22, \
+        NLOHMANN_JSON_PASTE21, \
+        NLOHMANN_JSON_PASTE20, \
+        NLOHMANN_JSON_PASTE19, \
+        NLOHMANN_JSON_PASTE18, \
+        NLOHMANN_JSON_PASTE17, \
+        NLOHMANN_JSON_PASTE16, \
+        NLOHMANN_JSON_PASTE15, \
+        NLOHMANN_JSON_PASTE14, \
+        NLOHMANN_JSON_PASTE13, \
+        NLOHMANN_JSON_PASTE12, \
+        NLOHMANN_JSON_PASTE11, \
+        NLOHMANN_JSON_PASTE10, \
+        NLOHMANN_JSON_PASTE9, \
+        NLOHMANN_JSON_PASTE8, \
+        NLOHMANN_JSON_PASTE7, \
+        NLOHMANN_JSON_PASTE6, \
+        NLOHMANN_JSON_PASTE5, \
+        NLOHMANN_JSON_PASTE4, \
+        NLOHMANN_JSON_PASTE3, \
+        NLOHMANN_JSON_PASTE2, \
+        NLOHMANN_JSON_PASTE1)(__VA_ARGS__))
+#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)
+#define NLOHMANN_JSON_PASTE3(func, v1, v2) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE2(func, v2)
+#define NLOHMANN_JSON_PASTE4(func, v1, v2, v3) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE3(func, v2, v3)
+#define NLOHMANN_JSON_PASTE5(func, v1, v2, v3, v4) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE4(func, v2, v3, v4)
+#define NLOHMANN_JSON_PASTE6(func, v1, v2, v3, v4, v5) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE5(func, v2, v3, v4, v5)
+#define NLOHMANN_JSON_PASTE7(func, v1, v2, v3, v4, v5, v6) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE6(func, v2, v3, v4, v5, v6)
+#define NLOHMANN_JSON_PASTE8(func, v1, v2, v3, v4, v5, v6, v7) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE7(func, v2, v3, v4, v5, v6, v7)
+#define NLOHMANN_JSON_PASTE9(func, v1, v2, v3, v4, v5, v6, v7, v8) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE8(func, v2, v3, v4, v5, v6, v7, v8)
+#define NLOHMANN_JSON_PASTE10(func, v1, v2, v3, v4, v5, v6, v7, v8, v9) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE9(func, v2, v3, v4, v5, v6, v7, v8, v9)
+#define NLOHMANN_JSON_PASTE11(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE10(func, v2, v3, v4, v5, v6, v7, v8, v9, v10)
+#define NLOHMANN_JSON_PASTE12(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE11(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11)
+#define NLOHMANN_JSON_PASTE13(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE12(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12)
+#define NLOHMANN_JSON_PASTE14(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE13(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13)
+#define NLOHMANN_JSON_PASTE15(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE14(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14)
+#define NLOHMANN_JSON_PASTE16(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE15(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15)
+#define NLOHMANN_JSON_PASTE17(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE16(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16)
+#define NLOHMANN_JSON_PASTE18(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE17(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17)
+#define NLOHMANN_JSON_PASTE19(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE18(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18)
+#define NLOHMANN_JSON_PASTE20(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE19(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19)
+#define NLOHMANN_JSON_PASTE21(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE20(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20)
+#define NLOHMANN_JSON_PASTE22(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE21(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21)
+#define NLOHMANN_JSON_PASTE23(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE22(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22)
+#define NLOHMANN_JSON_PASTE24(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE23(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23)
+#define NLOHMANN_JSON_PASTE25(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE24(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24)
+#define NLOHMANN_JSON_PASTE26(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE25(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25)
+#define NLOHMANN_JSON_PASTE27(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE26(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26)
+#define NLOHMANN_JSON_PASTE28(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE27(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27)
+#define NLOHMANN_JSON_PASTE29(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE28(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28)
+#define NLOHMANN_JSON_PASTE30(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE29(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29)
+#define NLOHMANN_JSON_PASTE31(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE30(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30)
+#define NLOHMANN_JSON_PASTE32(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE31(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31)
+#define NLOHMANN_JSON_PASTE33(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE32(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32)
+#define NLOHMANN_JSON_PASTE34(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE33(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33)
+#define NLOHMANN_JSON_PASTE35(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE34(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34)
+#define NLOHMANN_JSON_PASTE36(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE35(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35)
+#define NLOHMANN_JSON_PASTE37(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE36(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36)
+#define NLOHMANN_JSON_PASTE38(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE37(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37)
+#define NLOHMANN_JSON_PASTE39(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE38(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38)
+#define NLOHMANN_JSON_PASTE40(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE39(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39)
+#define NLOHMANN_JSON_PASTE41(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE40(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40)
+#define NLOHMANN_JSON_PASTE42(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE41(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41)
+#define NLOHMANN_JSON_PASTE43(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE42(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42)
+#define NLOHMANN_JSON_PASTE44(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE43(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43)
+#define NLOHMANN_JSON_PASTE45(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE44(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44)
+#define NLOHMANN_JSON_PASTE46(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE45(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45)
+#define NLOHMANN_JSON_PASTE47(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE46(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46)
+#define NLOHMANN_JSON_PASTE48(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE47(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47)
+#define NLOHMANN_JSON_PASTE49(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE48(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48)
+#define NLOHMANN_JSON_PASTE50(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE49(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49)
+#define NLOHMANN_JSON_PASTE51(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE50(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50)
+#define NLOHMANN_JSON_PASTE52(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE51(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51)
+#define NLOHMANN_JSON_PASTE53(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE52(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52)
+#define NLOHMANN_JSON_PASTE54(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE53(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53)
+#define NLOHMANN_JSON_PASTE55(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE54(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54)
+#define NLOHMANN_JSON_PASTE56(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE55(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55)
+#define NLOHMANN_JSON_PASTE57(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE56(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56)
+#define NLOHMANN_JSON_PASTE58(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE57(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57)
+#define NLOHMANN_JSON_PASTE59(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE58(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58)
+#define NLOHMANN_JSON_PASTE60(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE59(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59)
+#define NLOHMANN_JSON_PASTE61(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE60(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60)
+#define NLOHMANN_JSON_PASTE62(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE61(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61)
+#define NLOHMANN_JSON_PASTE63(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE62(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62)
+#define NLOHMANN_JSON_PASTE64(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE63(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63)
+
+#define NLOHMANN_JSON_TO(v1) nlohmann_json_j[#v1] = nlohmann_json_t.v1;
+#define NLOHMANN_JSON_FROM(v1) nlohmann_json_j.at(#v1).get_to(nlohmann_json_t.v1);
+#define NLOHMANN_JSON_FROM_WITH_DEFAULT(v1) nlohmann_json_t.v1 = nlohmann_json_j.value(#v1, nlohmann_json_default_obj.v1);
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) }
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE
+@since version 3.11.x
+*/
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE(Type, BaseType, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { nlohmann::from_json(nlohmann_json_j, static_cast<BaseType&>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT(Type, BaseType, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType&>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { nlohmann::from_json(nlohmann_json_j, static_cast<BaseType&>(nlohmann_json_t)); const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE(Type, BaseType, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE
+@since version 3.11.x
+*/
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE(Type, BaseType, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { nlohmann::from_json(nlohmann_json_j, static_cast<BaseType&>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT(Type, BaseType, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { nlohmann::from_json(nlohmann_json_j, static_cast<BaseType&>(nlohmann_json_t)); const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(Type, BaseType, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { nlohmann::to_json(nlohmann_json_j, static_cast<const BaseType &>(nlohmann_json_t)); NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+
+// inspired from https://stackoverflow.com/a/26745591
+// allows to call any std function as if (e.g. with begin):
+// using std::begin; begin(x);
+//
+// it allows using the detected idiom to retrieve the return type
+// of such an expression
+#define NLOHMANN_CAN_CALL_STD_FUNC_IMPL(std_name)                                 \
+    namespace detail {                                                            \
+    using std::std_name;                                                          \
+    \
+    template<typename... T>                                                       \
+    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
+    }                                                                             \
+    \
+    namespace detail2 {                                                           \
+    struct std_name##_tag                                                         \
+    {                                                                             \
+    };                                                                            \
+    \
+    template<typename... T>                                                       \
+    std_name##_tag std_name(T&&...);                                              \
+    \
+    template<typename... T>                                                       \
+    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
+    \
+    template<typename... T>                                                       \
+    struct would_call_std_##std_name                                              \
+    {                                                                             \
+        static constexpr auto const value = ::nlohmann::detail::                  \
+                                            is_detected_exact<std_name##_tag, result_of_##std_name, T...>::value; \
+    };                                                                            \
+    } /* namespace detail2 */ \
+    \
+    template<typename... T>                                                       \
+    struct would_call_std_##std_name : detail2::would_call_std_##std_name<T...>   \
+    {                                                                             \
+    }
+
+#ifndef JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_USE_IMPLICIT_CONVERSIONS 1
+#endif
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_EXPLICIT
+#else
+    #define JSON_EXPLICIT explicit
+#endif
+
+#ifndef JSON_DISABLE_ENUM_SERIALIZATION
+    #define JSON_DISABLE_ENUM_SERIALIZATION 0
+#endif
+
+#ifndef JSON_USE_GLOBAL_UDLS
+    #define JSON_USE_GLOBAL_UDLS 1
+#endif
+
+#if JSON_HAS_THREE_WAY_COMPARISON
+    #include <compare> // partial_ordering
+#endif
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////////////
+// JSON type enumeration //
+///////////////////////////
+
+/*!
+@brief the JSON type enumeration
+
+This enumeration collects the different JSON types. It is internally used to
+distinguish the stored values, and the functions @ref basic_json::is_null(),
+@ref basic_json::is_object(), @ref basic_json::is_array(),
+@ref basic_json::is_string(), @ref basic_json::is_boolean(),
+@ref basic_json::is_number() (with @ref basic_json::is_number_integer(),
+@ref basic_json::is_number_unsigned(), and @ref basic_json::is_number_float()),
+@ref basic_json::is_discarded(), @ref basic_json::is_primitive(), and
+@ref basic_json::is_structured() rely on it.
+
+@note There are three enumeration entries (number_integer, number_unsigned, and
+number_float), because the library distinguishes these three types for numbers:
+@ref basic_json::number_unsigned_t is used for unsigned integers,
+@ref basic_json::number_integer_t is used for signed integers, and
+@ref basic_json::number_float_t is used for floating-point numbers or to
+approximate integers which do not fit in the limits of their respective type.
+
+@sa see @ref basic_json::basic_json(const value_t value_type) -- create a JSON
+value with the default value for a given type
+
+@since version 1.0.0
+*/
+enum class value_t : std::uint8_t
+{
+    null,             ///< null value
+    object,           ///< object (unordered set of name/value pairs)
+    array,            ///< array (ordered collection of values)
+    string,           ///< string value
+    boolean,          ///< boolean value
+    number_integer,   ///< number value (signed integer)
+    number_unsigned,  ///< number value (unsigned integer)
+    number_float,     ///< number value (floating-point)
+    binary,           ///< binary array (ordered collection of bytes)
+    discarded         ///< discarded by the parser callback function
+};
+
+/*!
+@brief comparison operator for JSON types
+
+Returns an ordering that is similar to Python:
+- order: null < boolean < number < object < array < string < binary
+- furthermore, each type is not smaller than itself
+- discarded values are not comparable
+- binary is represented as a b"" string in python and directly comparable to a
+  string; however, making a binary array directly comparable with a string would
+  be surprising behavior in a JSON file.
+
+@since version 1.0.0
+*/
+#if JSON_HAS_THREE_WAY_COMPARISON
+    inline std::partial_ordering operator<=>(const value_t lhs, const value_t rhs) noexcept // *NOPAD*
+#else
+    inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+#endif
+{
+    static constexpr std::array<std::uint8_t, 9> order = {{
+            0 /* null */, 3 /* object */, 4 /* array */, 5 /* string */,
+            1 /* boolean */, 2 /* integer */, 2 /* unsigned */, 2 /* float */,
+            6 /* binary */
+        }
+    };
+
+    const auto l_index = static_cast<std::size_t>(lhs);
+    const auto r_index = static_cast<std::size_t>(rhs);
+#if JSON_HAS_THREE_WAY_COMPARISON
+    if (l_index < order.size() && r_index < order.size())
+    {
+        return order[l_index] <=> order[r_index]; // *NOPAD*
+    }
+    return std::partial_ordering::unordered;
+#else
+    return l_index < order.size() && r_index < order.size() && order[l_index] < order[r_index];
+#endif
+}
+
+// GCC selects the built-in operator< over an operator rewritten from
+// a user-defined spaceship operator
+// Clang, MSVC, and ICC select the rewritten candidate
+// (see GCC bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105200)
+#if JSON_HAS_THREE_WAY_COMPARISON && defined(__GNUC__)
+inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+{
+    return std::is_lt(lhs <=> rhs); // *NOPAD*
+}
+#endif
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/string_escape.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief replace all occurrences of a substring by another string
+
+@param[in,out] s  the string to manipulate; changed so that all
+               occurrences of @a f are replaced with @a t
+@param[in]     f  the substring to replace with @a t
+@param[in]     t  the string to replace @a f
+
+@pre The search string @a f must not be empty. **This precondition is
+enforced with an assertion.**
+
+@since version 2.0.0
+*/
+template<typename StringType>
+inline void replace_substring(StringType& s, const StringType& f,
+                              const StringType& t)
+{
+    JSON_ASSERT(!f.empty());
+    for (auto pos = s.find(f);                // find first occurrence of f
+            pos != StringType::npos;          // make sure f was found
+            s.replace(pos, f.size(), t),      // replace with t, and
+            pos = s.find(f, pos + t.size()))  // find next occurrence of f
+    {}
+}
+
+/*!
+ * @brief string escaping as described in RFC 6901 (Sect. 4)
+ * @param[in] s string to escape
+ * @return    escaped string
+ *
+ * Note the order of escaping "~" to "~0" and "/" to "~1" is important.
+ */
+template<typename StringType>
+inline StringType escape(StringType s)
+{
+    replace_substring(s, StringType{"~"}, StringType{"~0"});
+    replace_substring(s, StringType{"/"}, StringType{"~1"});
+    return s;
+}
+
+/*!
+ * @brief string unescaping as described in RFC 6901 (Sect. 4)
+ * @param[in] s string to unescape
+ * @return    unescaped string
+ *
+ * Note the order of escaping "~1" to "/" and "~0" to "~" is important.
+ */
+template<typename StringType>
+static void unescape(StringType& s)
+{
+    replace_substring(s, StringType{"~1"}, StringType{"/"});
+    replace_substring(s, StringType{"~0"}, StringType{"~"});
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/position_t.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // size_t
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// struct to capture the start position of the current token
+struct position_t
+{
+    /// the total number of characters read
+    std::size_t chars_read_total = 0;
+    /// the number of characters read in the current line
+    std::size_t chars_read_current_line = 0;
+    /// the number of lines read
+    std::size_t lines_read = 0;
+
+    /// conversion to size_t to preserve SAX interface
+    constexpr operator size_t() const
+    {
+        return chars_read_total;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2018 The Abseil Authors
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <type_traits> // conditional, enable_if, false_type, integral_constant, is_constructible, is_integral, is_same, remove_cv, remove_reference, true_type
+#include <utility> // index_sequence, make_index_sequence, index_sequence_for
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename T>
+using uncvref_t = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
+
+#ifdef JSON_HAS_CPP_14
+
+// the following utilities are natively available in C++14
+using std::enable_if_t;
+using std::index_sequence;
+using std::make_index_sequence;
+using std::index_sequence_for;
+
+#else
+
+// alias templates to reduce boilerplate
+template<bool B, typename T = void>
+using enable_if_t = typename std::enable_if<B, T>::type;
+
+// The following code is taken from https://github.com/abseil/abseil-cpp/blob/10cb35e459f5ecca5b2ff107635da0bfa41011b4/absl/utility/utility.h
+// which is part of Google Abseil (https://github.com/abseil/abseil-cpp), licensed under the Apache License 2.0.
+
+//// START OF CODE FROM GOOGLE ABSEIL
+
+// integer_sequence
+//
+// Class template representing a compile-time integer sequence. An instantiation
+// of `integer_sequence<T, Ints...>` has a sequence of integers encoded in its
+// type through its template arguments (which is a common need when
+// working with C++11 variadic templates). `absl::integer_sequence` is designed
+// to be a drop-in replacement for C++14's `std::integer_sequence`.
+//
+// Example:
+//
+//   template< class T, T... Ints >
+//   void user_function(integer_sequence<T, Ints...>);
+//
+//   int main()
+//   {
+//     // user_function's `T` will be deduced to `int` and `Ints...`
+//     // will be deduced to `0, 1, 2, 3, 4`.
+//     user_function(make_integer_sequence<int, 5>());
+//   }
+template <typename T, T... Ints>
+struct integer_sequence
+{
+    using value_type = T;
+    static constexpr std::size_t size() noexcept
+    {
+        return sizeof...(Ints);
+    }
+};
+
+// index_sequence
+//
+// A helper template for an `integer_sequence` of `size_t`,
+// `absl::index_sequence` is designed to be a drop-in replacement for C++14's
+// `std::index_sequence`.
+template <size_t... Ints>
+using index_sequence = integer_sequence<size_t, Ints...>;
+
+namespace utility_internal
+{
+
+template <typename Seq, size_t SeqSize, size_t Rem>
+struct Extend;
+
+// Note that SeqSize == sizeof...(Ints). It's passed explicitly for efficiency.
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 0>
+{
+    using type = integer_sequence < T, Ints..., (Ints + SeqSize)... >;
+};
+
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 1>
+{
+    using type = integer_sequence < T, Ints..., (Ints + SeqSize)..., 2 * SeqSize >;
+};
+
+// Recursion helper for 'make_integer_sequence<T, N>'.
+// 'Gen<T, N>::type' is an alias for 'integer_sequence<T, 0, 1, ... N-1>'.
+template <typename T, size_t N>
+struct Gen
+{
+    using type =
+        typename Extend < typename Gen < T, N / 2 >::type, N / 2, N % 2 >::type;
+};
+
+template <typename T>
+struct Gen<T, 0>
+{
+    using type = integer_sequence<T>;
+};
+
+}  // namespace utility_internal
+
+// Compile-time sequences of integers
+
+// make_integer_sequence
+//
+// This template alias is equivalent to
+// `integer_sequence<int, 0, 1, ..., N-1>`, and is designed to be a drop-in
+// replacement for C++14's `std::make_integer_sequence`.
+template <typename T, T N>
+using make_integer_sequence = typename utility_internal::Gen<T, N>::type;
+
+// make_index_sequence
+//
+// This template alias is equivalent to `index_sequence<0, 1, ..., N-1>`,
+// and is designed to be a drop-in replacement for C++14's
+// `std::make_index_sequence`.
+template <size_t N>
+using make_index_sequence = make_integer_sequence<size_t, N>;
+
+// index_sequence_for
+//
+// Converts a typename pack into an index sequence of the same length, and
+// is designed to be a drop-in replacement for C++14's
+// `std::index_sequence_for()`
+template <typename... Ts>
+using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
+
+//// END OF CODE FROM GOOGLE ABSEIL
+
+#endif
+
+// dispatch utility (taken from ranges-v3)
+template<unsigned N> struct priority_tag : priority_tag < N - 1 > {};
+template<> struct priority_tag<0> {};
+
+// taken from ranges-v3
+template<typename T>
+struct static_const
+{
+    static JSON_INLINE_VARIABLE constexpr T value{};
+};
+
+#ifndef JSON_HAS_CPP_17
+    template<typename T>
+    constexpr T static_const<T>::value;
+#endif
+
+template<typename T, typename... Args>
+constexpr std::array<T, sizeof...(Args)> make_array(Args&& ... args)
+{
+    return std::array<T, sizeof...(Args)> {{static_cast<T>(std::forward<Args>(args))...}};
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <limits> // numeric_limits
+#include <string> // char_traits
+#include <tuple> // tuple
+#include <type_traits> // false_type, is_constructible, is_integral, is_same, true_type
+#include <utility> // declval
+
+// #include <nlohmann/detail/iterators/iterator_traits.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <iterator> // random_access_iterator_tag
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/meta/void_t.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename It, typename = void>
+struct iterator_types {};
+
+template<typename It>
+struct iterator_types <
+    It,
+    void_t<typename It::difference_type, typename It::value_type, typename It::pointer,
+    typename It::reference, typename It::iterator_category >>
+{
+    using difference_type = typename It::difference_type;
+    using value_type = typename It::value_type;
+    using pointer = typename It::pointer;
+    using reference = typename It::reference;
+    using iterator_category = typename It::iterator_category;
+};
+
+// This is required as some compilers implement std::iterator_traits in a way that
+// doesn't work with SFINAE. See https://github.com/nlohmann/json/issues/1341.
+template<typename T, typename = void>
+struct iterator_traits
+{
+};
+
+template<typename T>
+struct iterator_traits < T, enable_if_t < !std::is_pointer<T>::value >>
+            : iterator_types<T>
+{
+};
+
+template<typename T>
+struct iterator_traits<T*, enable_if_t<std::is_object<T>::value>>
+{
+    using iterator_category = std::random_access_iterator_tag;
+    using value_type = T;
+    using difference_type = ptrdiff_t;
+    using pointer = T*;
+    using reference = T&;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/call_std/begin.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+NLOHMANN_CAN_CALL_STD_FUNC_IMPL(begin);
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/call_std/end.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+NLOHMANN_CAN_CALL_STD_FUNC_IMPL(end);
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+// #include <nlohmann/json_fwd.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
+    #define INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+    #include <cstdint> // int64_t, uint64_t
+    #include <map> // map
+    #include <memory> // allocator
+    #include <string> // string
+    #include <vector> // vector
+
+    // #include <nlohmann/detail/abi_macros.hpp>
+
+
+    /*!
+    @brief namespace for Niels Lohmann
+    @see https://github.com/nlohmann
+    @since version 1.0.0
+    */
+    NLOHMANN_JSON_NAMESPACE_BEGIN
+
+    /*!
+    @brief default JSONSerializer template argument
+
+    This serializer ignores the template arguments and uses ADL
+    ([argument-dependent lookup](https://en.cppreference.com/w/cpp/language/adl))
+    for serialization.
+    */
+    template<typename T = void, typename SFINAE = void>
+    struct adl_serializer;
+
+    /// a class to store JSON values
+    /// @sa https://json.nlohmann.me/api/basic_json/
+    template<template<typename U, typename V, typename... Args> class ObjectType =
+    std::map,
+    template<typename U, typename... Args> class ArrayType = std::vector,
+    class StringType = std::string, class BooleanType = bool,
+    class NumberIntegerType = std::int64_t,
+    class NumberUnsignedType = std::uint64_t,
+    class NumberFloatType = double,
+    template<typename U> class AllocatorType = std::allocator,
+    template<typename T, typename SFINAE = void> class JSONSerializer =
+    adl_serializer,
+    class BinaryType = std::vector<std::uint8_t>, // cppcheck-suppress syntaxError
+    class CustomBaseClass = void>
+    class basic_json;
+
+    /// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+    /// @sa https://json.nlohmann.me/api/json_pointer/
+    template<typename RefStringType>
+    class json_pointer;
+
+    /*!
+    @brief default specialization
+    @sa https://json.nlohmann.me/api/json/
+    */
+    using json = basic_json<>;
+
+    /// @brief a minimal map-like container that preserves insertion order
+    /// @sa https://json.nlohmann.me/api/ordered_map/
+    template<class Key, class T, class IgnoredLess, class Allocator>
+    struct ordered_map;
+
+    /// @brief specialization that maintains the insertion order of object keys
+    /// @sa https://json.nlohmann.me/api/ordered_json/
+    using ordered_json = basic_json<nlohmann::ordered_map>;
+
+    NLOHMANN_JSON_NAMESPACE_END
+
+#endif  // INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+/*!
+@brief detail namespace with internal helper functions
+
+This namespace collects functions that should not be exposed,
+implementations of some @ref basic_json methods, and meta-programming helpers.
+
+@since version 2.1.0
+*/
+namespace detail
+{
+
+/////////////
+// helpers //
+/////////////
+
+// Note to maintainers:
+//
+// Every trait in this file expects a non CV-qualified type.
+// The only exceptions are in the 'aliases for detected' section
+// (i.e. those of the form: decltype(T::member_function(std::declval<T>())))
+//
+// In this case, T has to be properly CV-qualified to constraint the function arguments
+// (e.g. to_json(BasicJsonType&, const T&))
+
+template<typename> struct is_basic_json : std::false_type {};
+
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
+
+// used by exceptions create() member functions
+// true_type for pointer to possibly cv-qualified basic_json or std::nullptr_t
+// false_type otherwise
+template<typename BasicJsonContext>
+struct is_basic_json_context :
+    std::integral_constant < bool,
+    is_basic_json<typename std::remove_cv<typename std::remove_pointer<BasicJsonContext>::type>::type>::value
+    || std::is_same<BasicJsonContext, std::nullptr_t>::value >
+{};
+
+//////////////////////
+// json_ref helpers //
+//////////////////////
+
+template<typename>
+class json_ref;
+
+template<typename>
+struct is_json_ref : std::false_type {};
+
+template<typename T>
+struct is_json_ref<json_ref<T>> : std::true_type {};
+
+//////////////////////////
+// aliases for detected //
+//////////////////////////
+
+template<typename T>
+using mapped_type_t = typename T::mapped_type;
+
+template<typename T>
+using key_type_t = typename T::key_type;
+
+template<typename T>
+using value_type_t = typename T::value_type;
+
+template<typename T>
+using difference_type_t = typename T::difference_type;
+
+template<typename T>
+using pointer_t = typename T::pointer;
+
+template<typename T>
+using reference_t = typename T::reference;
+
+template<typename T>
+using iterator_category_t = typename T::iterator_category;
+
+template<typename T, typename... Args>
+using to_json_function = decltype(T::to_json(std::declval<Args>()...));
+
+template<typename T, typename... Args>
+using from_json_function = decltype(T::from_json(std::declval<Args>()...));
+
+template<typename T, typename U>
+using get_template_function = decltype(std::declval<T>().template get<U>());
+
+// trait checking if JSONSerializer<T>::from_json(json const&, udt&) exists
+template<typename BasicJsonType, typename T, typename = void>
+struct has_from_json : std::false_type {};
+
+// trait checking if j.get<T> is valid
+// use this trait instead of std::is_constructible or std::is_convertible,
+// both rely on, or make use of implicit conversions, and thus fail when T
+// has several constructors/operator= (see https://github.com/nlohmann/json/issues/958)
+template <typename BasicJsonType, typename T>
+struct is_getable
+{
+    static constexpr bool value = is_detected<get_template_function, const BasicJsonType&, T>::value;
+};
+
+template<typename BasicJsonType, typename T>
+struct has_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, from_json_function, serializer,
+        const BasicJsonType&, T&>::value;
+};
+
+// This trait checks if JSONSerializer<T>::from_json(json const&) exists
+// this overload is used for non-default-constructible user-defined-types
+template<typename BasicJsonType, typename T, typename = void>
+struct has_non_default_from_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_non_default_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<T, from_json_function, serializer,
+        const BasicJsonType&>::value;
+};
+
+// This trait checks if BasicJsonType::json_serializer<T>::to_json exists
+// Do not evaluate the trait when T is a basic_json type, to avoid template instantiation infinite recursion.
+template<typename BasicJsonType, typename T, typename = void>
+struct has_to_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_to_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, to_json_function, serializer, BasicJsonType&,
+        T>::value;
+};
+
+template<typename T>
+using detect_key_compare = typename T::key_compare;
+
+template<typename T>
+struct has_key_compare : std::integral_constant<bool, is_detected<detect_key_compare, T>::value> {};
+
+// obtains the actual object key comparator
+template<typename BasicJsonType>
+struct actual_object_comparator
+{
+    using object_t = typename BasicJsonType::object_t;
+    using object_comparator_t = typename BasicJsonType::default_object_comparator_t;
+    using type = typename std::conditional < has_key_compare<object_t>::value,
+          typename object_t::key_compare, object_comparator_t>::type;
+};
+
+template<typename BasicJsonType>
+using actual_object_comparator_t = typename actual_object_comparator<BasicJsonType>::type;
+
+/////////////////
+// char_traits //
+/////////////////
+
+// Primary template of char_traits calls std char_traits
+template<typename T>
+struct char_traits : std::char_traits<T>
+{};
+
+// Explicitly define char traits for unsigned char since it is not standard
+template<>
+struct char_traits<unsigned char> : std::char_traits<char>
+{
+    using char_type = unsigned char;
+    using int_type = uint64_t;
+
+    // Redefine to_int_type function
+    static int_type to_int_type(char_type c) noexcept
+    {
+        return static_cast<int_type>(c);
+    }
+
+    static char_type to_char_type(int_type i) noexcept
+    {
+        return static_cast<char_type>(i);
+    }
+
+    static constexpr int_type eof() noexcept
+    {
+        return static_cast<int_type>(std::char_traits<char>::eof());
+    }
+};
+
+// Explicitly define char traits for signed char since it is not standard
+template<>
+struct char_traits<signed char> : std::char_traits<char>
+{
+    using char_type = signed char;
+    using int_type = uint64_t;
+
+    // Redefine to_int_type function
+    static int_type to_int_type(char_type c) noexcept
+    {
+        return static_cast<int_type>(c);
+    }
+
+    static char_type to_char_type(int_type i) noexcept
+    {
+        return static_cast<char_type>(i);
+    }
+
+    static constexpr int_type eof() noexcept
+    {
+        return static_cast<int_type>(std::char_traits<char>::eof());
+    }
+};
+
+///////////////////
+// is_ functions //
+///////////////////
+
+// https://en.cppreference.com/w/cpp/types/conjunction
+template<class...> struct conjunction : std::true_type { };
+template<class B> struct conjunction<B> : B { };
+template<class B, class... Bn>
+struct conjunction<B, Bn...>
+: std::conditional<static_cast<bool>(B::value), conjunction<Bn...>, B>::type {};
+
+// https://en.cppreference.com/w/cpp/types/negation
+template<class B> struct negation : std::integral_constant < bool, !B::value > { };
+
+// Reimplementation of is_constructible and is_default_constructible, due to them being broken for
+// std::pair and std::tuple until LWG 2367 fix (see https://cplusplus.github.io/LWG/lwg-defects.html#2367).
+// This causes compile errors in e.g. clang 3.5 or gcc 4.9.
+template <typename T>
+struct is_default_constructible : std::is_default_constructible<T> {};
+
+template <typename T1, typename T2>
+struct is_default_constructible<std::pair<T1, T2>>
+            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+
+template <typename T1, typename T2>
+struct is_default_constructible<const std::pair<T1, T2>>
+            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+
+template <typename... Ts>
+struct is_default_constructible<std::tuple<Ts...>>
+            : conjunction<is_default_constructible<Ts>...> {};
+
+template <typename... Ts>
+struct is_default_constructible<const std::tuple<Ts...>>
+            : conjunction<is_default_constructible<Ts>...> {};
+
+template <typename T, typename... Args>
+struct is_constructible : std::is_constructible<T, Args...> {};
+
+template <typename T1, typename T2>
+struct is_constructible<std::pair<T1, T2>> : is_default_constructible<std::pair<T1, T2>> {};
+
+template <typename T1, typename T2>
+struct is_constructible<const std::pair<T1, T2>> : is_default_constructible<const std::pair<T1, T2>> {};
+
+template <typename... Ts>
+struct is_constructible<std::tuple<Ts...>> : is_default_constructible<std::tuple<Ts...>> {};
+
+template <typename... Ts>
+struct is_constructible<const std::tuple<Ts...>> : is_default_constructible<const std::tuple<Ts...>> {};
+
+template<typename T, typename = void>
+struct is_iterator_traits : std::false_type {};
+
+template<typename T>
+struct is_iterator_traits<iterator_traits<T>>
+{
+  private:
+    using traits = iterator_traits<T>;
+
+  public:
+    static constexpr auto value =
+        is_detected<value_type_t, traits>::value &&
+        is_detected<difference_type_t, traits>::value &&
+        is_detected<pointer_t, traits>::value &&
+        is_detected<iterator_category_t, traits>::value &&
+        is_detected<reference_t, traits>::value;
+};
+
+template<typename T>
+struct is_range
+{
+  private:
+    using t_ref = typename std::add_lvalue_reference<T>::type;
+
+    using iterator = detected_t<result_of_begin, t_ref>;
+    using sentinel = detected_t<result_of_end, t_ref>;
+
+    // to be 100% correct, it should use https://en.cppreference.com/w/cpp/iterator/input_or_output_iterator
+    // and https://en.cppreference.com/w/cpp/iterator/sentinel_for
+    // but reimplementing these would be too much work, as a lot of other concepts are used underneath
+    static constexpr auto is_iterator_begin =
+        is_iterator_traits<iterator_traits<iterator>>::value;
+
+  public:
+    static constexpr bool value = !std::is_same<iterator, nonesuch>::value && !std::is_same<sentinel, nonesuch>::value && is_iterator_begin;
+};
+
+template<typename R>
+using iterator_t = enable_if_t<is_range<R>::value, result_of_begin<decltype(std::declval<R&>())>>;
+
+template<typename T>
+using range_value_t = value_type_t<iterator_traits<iterator_t<T>>>;
+
+// The following implementation of is_complete_type is taken from
+// https://blogs.msdn.microsoft.com/vcblog/2015/12/02/partial-support-for-expression-sfinae-in-vs-2015-update-1/
+// and is written by Xiang Fan who agreed to using it in this library.
+
+template<typename T, typename = void>
+struct is_complete_type : std::false_type {};
+
+template<typename T>
+struct is_complete_type<T, decltype(void(sizeof(T)))> : std::true_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType,
+         typename = void>
+struct is_compatible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type_impl <
+    BasicJsonType, CompatibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, CompatibleObjectType>::value&&
+    is_detected<key_type_t, CompatibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    // macOS's is_constructible does not play well with nonesuch...
+    static constexpr bool value =
+        is_constructible<typename object_t::key_type,
+        typename CompatibleObjectType::key_type>::value &&
+        is_constructible<typename object_t::mapped_type,
+        typename CompatibleObjectType::mapped_type>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type
+    : is_compatible_object_type_impl<BasicJsonType, CompatibleObjectType> {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         typename = void>
+struct is_constructible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type_impl <
+    BasicJsonType, ConstructibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, ConstructibleObjectType>::value&&
+    is_detected<key_type_t, ConstructibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    static constexpr bool value =
+        (is_default_constructible<ConstructibleObjectType>::value &&
+         (std::is_move_assignable<ConstructibleObjectType>::value ||
+          std::is_copy_assignable<ConstructibleObjectType>::value) &&
+         (is_constructible<typename ConstructibleObjectType::key_type,
+          typename object_t::key_type>::value &&
+          std::is_same <
+          typename object_t::mapped_type,
+          typename ConstructibleObjectType::mapped_type >::value)) ||
+        (has_from_json<BasicJsonType,
+         typename ConstructibleObjectType::mapped_type>::value ||
+         has_non_default_from_json <
+         BasicJsonType,
+         typename ConstructibleObjectType::mapped_type >::value);
+};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type
+    : is_constructible_object_type_impl<BasicJsonType,
+      ConstructibleObjectType> {};
+
+template<typename BasicJsonType, typename CompatibleStringType>
+struct is_compatible_string_type
+{
+    static constexpr auto value =
+        is_constructible<typename BasicJsonType::string_t, CompatibleStringType>::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleStringType>
+struct is_constructible_string_type
+{
+    // launder type through decltype() to fix compilation failure on ICPC
+#ifdef __INTEL_COMPILER
+    using laundered_type = decltype(std::declval<ConstructibleStringType>());
+#else
+    using laundered_type = ConstructibleStringType;
+#endif
+
+    static constexpr auto value =
+        conjunction <
+        is_constructible<laundered_type, typename BasicJsonType::string_t>,
+        is_detected_exact<typename BasicJsonType::string_t::value_type,
+        value_type_t, laundered_type >>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType, typename = void>
+struct is_compatible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type_impl <
+    BasicJsonType, CompatibleArrayType,
+    enable_if_t <
+    is_detected<iterator_t, CompatibleArrayType>::value&&
+    is_iterator_traits<iterator_traits<detected_t<iterator_t, CompatibleArrayType>>>::value&&
+// special case for types like std::filesystem::path whose iterator's value_type are themselves
+// c.f. https://github.com/nlohmann/json/pull/3073
+    !std::is_same<CompatibleArrayType, detected_t<range_value_t, CompatibleArrayType>>::value >>
+{
+    static constexpr bool value =
+        is_constructible<BasicJsonType,
+        range_value_t<CompatibleArrayType>>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type
+    : is_compatible_array_type_impl<BasicJsonType, CompatibleArrayType> {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType, typename = void>
+struct is_constructible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t<std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value >>
+            : std::true_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t < !std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value&&
+    !is_compatible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+    is_default_constructible<ConstructibleArrayType>::value&&
+(std::is_move_assignable<ConstructibleArrayType>::value ||
+ std::is_copy_assignable<ConstructibleArrayType>::value)&&
+is_detected<iterator_t, ConstructibleArrayType>::value&&
+is_iterator_traits<iterator_traits<detected_t<iterator_t, ConstructibleArrayType>>>::value&&
+is_detected<range_value_t, ConstructibleArrayType>::value&&
+// special case for types like std::filesystem::path whose iterator's value_type are themselves
+// c.f. https://github.com/nlohmann/json/pull/3073
+!std::is_same<ConstructibleArrayType, detected_t<range_value_t, ConstructibleArrayType>>::value&&
+        is_complete_type <
+        detected_t<range_value_t, ConstructibleArrayType >>::value >>
+{
+    using value_type = range_value_t<ConstructibleArrayType>;
+
+    static constexpr bool value =
+        std::is_same<value_type,
+        typename BasicJsonType::array_t::value_type>::value ||
+        has_from_json<BasicJsonType,
+        value_type>::value ||
+        has_non_default_from_json <
+        BasicJsonType,
+        value_type >::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type
+    : is_constructible_array_type_impl<BasicJsonType, ConstructibleArrayType> {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType,
+         typename = void>
+struct is_compatible_integer_type_impl : std::false_type {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type_impl <
+    RealIntegerType, CompatibleNumberIntegerType,
+    enable_if_t < std::is_integral<RealIntegerType>::value&&
+    std::is_integral<CompatibleNumberIntegerType>::value&&
+    !std::is_same<bool, CompatibleNumberIntegerType>::value >>
+{
+    // is there an assert somewhere on overflows?
+    using RealLimits = std::numeric_limits<RealIntegerType>;
+    using CompatibleLimits = std::numeric_limits<CompatibleNumberIntegerType>;
+
+    static constexpr auto value =
+        is_constructible<RealIntegerType,
+        CompatibleNumberIntegerType>::value &&
+        CompatibleLimits::is_integer &&
+        RealLimits::is_signed == CompatibleLimits::is_signed;
+};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type
+    : is_compatible_integer_type_impl<RealIntegerType,
+      CompatibleNumberIntegerType> {};
+
+template<typename BasicJsonType, typename CompatibleType, typename = void>
+struct is_compatible_type_impl: std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type_impl <
+    BasicJsonType, CompatibleType,
+    enable_if_t<is_complete_type<CompatibleType>::value >>
+{
+    static constexpr bool value =
+        has_to_json<BasicJsonType, CompatibleType>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type
+    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};
+
+template<typename T1, typename T2>
+struct is_constructible_tuple : std::false_type {};
+
+template<typename T1, typename... Args>
+struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
+
+template<typename BasicJsonType, typename T>
+struct is_json_iterator_of : std::false_type {};
+
+template<typename BasicJsonType>
+struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::iterator> : std::true_type {};
+
+template<typename BasicJsonType>
+struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::const_iterator> : std::true_type
+{};
+
+// checks if a given type T is a template specialization of Primary
+template<template <typename...> class Primary, typename T>
+struct is_specialization_of : std::false_type {};
+
+template<template <typename...> class Primary, typename... Args>
+struct is_specialization_of<Primary, Primary<Args...>> : std::true_type {};
+
+template<typename T>
+using is_json_pointer = is_specialization_of<::nlohmann::json_pointer, uncvref_t<T>>;
+
+// checks if A and B are comparable using Compare functor
+template<typename Compare, typename A, typename B, typename = void>
+struct is_comparable : std::false_type {};
+
+template<typename Compare, typename A, typename B>
+struct is_comparable<Compare, A, B, void_t<
+decltype(std::declval<Compare>()(std::declval<A>(), std::declval<B>())),
+decltype(std::declval<Compare>()(std::declval<B>(), std::declval<A>()))
+>> : std::true_type {};
+
+template<typename T>
+using detect_is_transparent = typename T::is_transparent;
+
+// type trait to check if KeyType can be used as object key (without a BasicJsonType)
+// see is_usable_as_basic_json_key_type below
+template<typename Comparator, typename ObjectKeyType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
+         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
+using is_usable_as_key_type = typename std::conditional <
+                              is_comparable<Comparator, ObjectKeyType, KeyTypeCVRef>::value
+                              && !(ExcludeObjectKeyType && std::is_same<KeyType,
+                                   ObjectKeyType>::value)
+                              && (!RequireTransparentComparator
+                                  || is_detected <detect_is_transparent, Comparator>::value)
+                              && !is_json_pointer<KeyType>::value,
+                              std::true_type,
+                              std::false_type >::type;
+
+// type trait to check if KeyType can be used as object key
+// true if:
+//   - KeyType is comparable with BasicJsonType::object_t::key_type
+//   - if ExcludeObjectKeyType is true, KeyType is not BasicJsonType::object_t::key_type
+//   - the comparator is transparent or RequireTransparentComparator is false
+//   - KeyType is not a JSON iterator or json_pointer
+template<typename BasicJsonType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
+         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
+using is_usable_as_basic_json_key_type = typename std::conditional <
+        is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
+        typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
+        RequireTransparentComparator, ExcludeObjectKeyType>::value
+        && !is_json_iterator_of<BasicJsonType, KeyType>::value,
+        std::true_type,
+        std::false_type >::type;
+
+template<typename ObjectType, typename KeyType>
+using detect_erase_with_key_type = decltype(std::declval<ObjectType&>().erase(std::declval<KeyType>()));
+
+// type trait to check if object_t has an erase() member functions accepting KeyType
+template<typename BasicJsonType, typename KeyType>
+using has_erase_with_key_type = typename std::conditional <
+                                is_detected <
+                                detect_erase_with_key_type,
+                                typename BasicJsonType::object_t, KeyType >::value,
+                                std::true_type,
+                                std::false_type >::type;
+
+// a naive helper to check if a type is an ordered_map (exploits the fact that
+// ordered_map inherits capacity() from std::vector)
+template <typename T>
+struct is_ordered_map
+{
+    using one = char;
+
+    struct two
+    {
+        char x[2]; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    };
+
+    template <typename C> static one test( decltype(&C::capacity) ) ;
+    template <typename C> static two test(...);
+
+    enum { value = sizeof(test<T>(nullptr)) == sizeof(char) }; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+};
+
+// to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
+template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
+T conditional_static_cast(U value)
+{
+    return static_cast<T>(value);
+}
+
+template<typename T, typename U, enable_if_t<std::is_same<T, U>::value, int> = 0>
+T conditional_static_cast(U value)
+{
+    return value;
+}
+
+template<typename... Types>
+using all_integral = conjunction<std::is_integral<Types>...>;
+
+template<typename... Types>
+using all_signed = conjunction<std::is_signed<Types>...>;
+
+template<typename... Types>
+using all_unsigned = conjunction<std::is_unsigned<Types>...>;
+
+// there's a disjunction trait in another PR; replace when merged
+template<typename... Types>
+using same_sign = std::integral_constant < bool,
+      all_signed<Types...>::value || all_unsigned<Types...>::value >;
+
+template<typename OfType, typename T>
+using never_out_of_range = std::integral_constant < bool,
+      (std::is_signed<OfType>::value && (sizeof(T) < sizeof(OfType)))
+      || (same_sign<OfType, T>::value && sizeof(OfType) == sizeof(T)) >;
+
+template<typename OfType, typename T,
+         bool OfTypeSigned = std::is_signed<OfType>::value,
+         bool TSigned = std::is_signed<T>::value>
+struct value_in_range_of_impl2;
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, false, false>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, true, false>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, false, true>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return val >= 0 && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, true, true>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) >= static_cast<CommonType>((std::numeric_limits<OfType>::min)())
+               && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T,
+         bool NeverOutOfRange = never_out_of_range<OfType, T>::value,
+         typename = detail::enable_if_t<all_integral<OfType, T>::value>>
+struct value_in_range_of_impl1;
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl1<OfType, T, false>
+{
+    static constexpr bool test(T val)
+    {
+        return value_in_range_of_impl2<OfType, T>::test(val);
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl1<OfType, T, true>
+{
+    static constexpr bool test(T /*val*/)
+    {
+        return true;
+    }
+};
+
+template<typename OfType, typename T>
+constexpr bool value_in_range_of(T val)
+{
+    return value_in_range_of_impl1<OfType, T>::test(val);
+}
+
+template<bool Value>
+using bool_constant = std::integral_constant<bool, Value>;
+
+///////////////////////////////////////////////////////////////////////////////
+// is_c_string
+///////////////////////////////////////////////////////////////////////////////
+
+namespace impl
+{
+
+template<typename T>
+constexpr bool is_c_string()
+{
+    using TUnExt = typename std::remove_extent<T>::type;
+    using TUnCVExt = typename std::remove_cv<TUnExt>::type;
+    using TUnPtr = typename std::remove_pointer<T>::type;
+    using TUnCVPtr = typename std::remove_cv<TUnPtr>::type;
+    return
+        (std::is_array<T>::value && std::is_same<TUnCVExt, char>::value)
+        || (std::is_pointer<T>::value && std::is_same<TUnCVPtr, char>::value);
+}
+
+}  // namespace impl
+
+// checks whether T is a [cv] char */[cv] char[] C string
+template<typename T>
+struct is_c_string : bool_constant<impl::is_c_string<T>()> {};
+
+template<typename T>
+using is_c_string_uncvref = is_c_string<uncvref_t<T>>;
+
+///////////////////////////////////////////////////////////////////////////////
+// is_transparent
+///////////////////////////////////////////////////////////////////////////////
+
+namespace impl
+{
+
+template<typename T>
+constexpr bool is_transparent()
+{
+    return is_detected<detect_is_transparent, T>::value;
+}
+
+}  // namespace impl
+
+// checks whether T has a member named is_transparent
+template<typename T>
+struct is_transparent : bool_constant<impl::is_transparent<T>()> {};
+
+///////////////////////////////////////////////////////////////////////////////
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/string_concat.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstring> // strlen
+#include <string> // string
+#include <utility> // forward
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+inline std::size_t concat_length()
+{
+    return 0;
+}
+
+template<typename... Args>
+inline std::size_t concat_length(const char* cstr, const Args& ... rest);
+
+template<typename StringType, typename... Args>
+inline std::size_t concat_length(const StringType& str, const Args& ... rest);
+
+template<typename... Args>
+inline std::size_t concat_length(const char /*c*/, const Args& ... rest)
+{
+    return 1 + concat_length(rest...);
+}
+
+template<typename... Args>
+inline std::size_t concat_length(const char* cstr, const Args& ... rest)
+{
+    // cppcheck-suppress ignoredReturnValue
+    return ::strlen(cstr) + concat_length(rest...);
+}
+
+template<typename StringType, typename... Args>
+inline std::size_t concat_length(const StringType& str, const Args& ... rest)
+{
+    return str.size() + concat_length(rest...);
+}
+
+template<typename OutStringType>
+inline void concat_into(OutStringType& /*out*/)
+{}
+
+template<typename StringType, typename Arg>
+using string_can_append = decltype(std::declval<StringType&>().append(std::declval < Arg && > ()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append = is_detected<string_can_append, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_op = decltype(std::declval<StringType&>() += std::declval < Arg && > ());
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_op = is_detected<string_can_append_op, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_iter = decltype(std::declval<StringType&>().append(std::declval<const Arg&>().begin(), std::declval<const Arg&>().end()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_iter = is_detected<string_can_append_iter, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_data = decltype(std::declval<StringType&>().append(std::declval<const Arg&>().data(), std::declval<const Arg&>().size()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_data = is_detected<string_can_append_data, StringType, Arg>;
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && detect_string_can_append_op<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest);
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && !detect_string_can_append_iter<OutStringType, Arg>::value
+                         && detect_string_can_append_data<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
+
+template<typename OutStringType, typename Arg, typename... Args,
+         enable_if_t<detect_string_can_append<OutStringType, Arg>::value, int> = 0>
+inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest)
+{
+    out.append(std::forward<Arg>(arg));
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && detect_string_can_append_op<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, Arg&& arg, Args&& ... rest)
+{
+    out += std::forward<Arg>(arg);
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
+{
+    out.append(arg.begin(), arg.end());
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && !detect_string_can_append_iter<OutStringType, Arg>::value
+                         && detect_string_can_append_data<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
+{
+    out.append(arg.data(), arg.size());
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template<typename OutStringType = std::string, typename... Args>
+inline OutStringType concat(Args && ... args)
+{
+    OutStringType str;
+    str.reserve(concat_length(args...));
+    concat_into(str, std::forward<Args>(args)...);
+    return str;
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+
+// With -Wweak-vtables, Clang will complain about the exception classes as they
+// have no out-of-line virtual method definitions and their vtable will be
+// emitted in every translation unit. This issue cannot be fixed with a
+// header-only library as there is no implementation file to move these
+// functions to. As a result, we suppress this warning here to avoid client
+// code to stumble over this. See https://github.com/nlohmann/json/issues/4087
+// for a discussion.
+#if defined(__clang__)
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wweak-vtables"
+#endif
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+////////////////
+// exceptions //
+////////////////
+
+/// @brief general exception of the @ref basic_json class
+/// @sa https://json.nlohmann.me/api/basic_json/exception/
+class exception : public std::exception
+{
+  public:
+    /// returns the explanatory string
+    const char* what() const noexcept override
+    {
+        return m.what();
+    }
+
+    /// the id of the exception
+    const int id; // NOLINT(cppcoreguidelines-non-private-member-variables-in-classes)
+
+  protected:
+    JSON_HEDLEY_NON_NULL(3)
+    exception(int id_, const char* what_arg) : id(id_), m(what_arg) {} // NOLINT(bugprone-throw-keyword-missing)
+
+    static std::string name(const std::string& ename, int id_)
+    {
+        return concat("[json.exception.", ename, '.', std::to_string(id_), "] ");
+    }
+
+    static std::string diagnostics(std::nullptr_t /*leaf_element*/)
+    {
+        return "";
+    }
+
+    template<typename BasicJsonType>
+    static std::string diagnostics(const BasicJsonType* leaf_element)
+    {
+#if JSON_DIAGNOSTICS
+        std::vector<std::string> tokens;
+        for (const auto* current = leaf_element; current != nullptr && current->m_parent != nullptr; current = current->m_parent)
+        {
+            switch (current->m_parent->type())
+            {
+                case value_t::array:
+                {
+                    for (std::size_t i = 0; i < current->m_parent->m_data.m_value.array->size(); ++i)
+                    {
+                        if (&current->m_parent->m_data.m_value.array->operator[](i) == current)
+                        {
+                            tokens.emplace_back(std::to_string(i));
+                            break;
+                        }
+                    }
+                    break;
+                }
+
+                case value_t::object:
+                {
+                    for (const auto& element : *current->m_parent->m_data.m_value.object)
+                    {
+                        if (&element.second == current)
+                        {
+                            tokens.emplace_back(element.first.c_str());
+                            break;
+                        }
+                    }
+                    break;
+                }
+
+                case value_t::null: // LCOV_EXCL_LINE
+                case value_t::string: // LCOV_EXCL_LINE
+                case value_t::boolean: // LCOV_EXCL_LINE
+                case value_t::number_integer: // LCOV_EXCL_LINE
+                case value_t::number_unsigned: // LCOV_EXCL_LINE
+                case value_t::number_float: // LCOV_EXCL_LINE
+                case value_t::binary: // LCOV_EXCL_LINE
+                case value_t::discarded: // LCOV_EXCL_LINE
+                default:   // LCOV_EXCL_LINE
+                    break; // LCOV_EXCL_LINE
+            }
+        }
+
+        if (tokens.empty())
+        {
+            return "";
+        }
+
+        auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
+                                   [](const std::string & a, const std::string & b)
+        {
+            return concat(a, '/', detail::escape(b));
+        });
+        return concat('(', str, ") ");
+#else
+        static_cast<void>(leaf_element);
+        return "";
+#endif
+    }
+
+  private:
+    /// an exception object as storage for error messages
+    std::runtime_error m;
+};
+
+/// @brief exception indicating a parse error
+/// @sa https://json.nlohmann.me/api/basic_json/parse_error/
+class parse_error : public exception
+{
+  public:
+    /*!
+    @brief create a parse error exception
+    @param[in] id_       the id of the exception
+    @param[in] pos       the position where the error occurred (or with
+                         chars_read_total=0 if the position cannot be
+                         determined)
+    @param[in] what_arg  the explanatory string
+    @return parse_error object
+    */
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static parse_error create(int id_, const position_t& pos, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("parse_error", id_), "parse error",
+                                     position_string(pos), ": ", exception::diagnostics(context), what_arg);
+        return {id_, pos.chars_read_total, w.c_str()};
+    }
+
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static parse_error create(int id_, std::size_t byte_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("parse_error", id_), "parse error",
+                                     (byte_ != 0 ? (concat(" at byte ", std::to_string(byte_))) : ""),
+                                     ": ", exception::diagnostics(context), what_arg);
+        return {id_, byte_, w.c_str()};
+    }
+
+    /*!
+    @brief byte index of the parse error
+
+    The byte index of the last read character in the input file.
+
+    @note For an input with n bytes, 1 is the index of the first character and
+          n+1 is the index of the terminating null byte or the end of file.
+          This also holds true when reading a byte vector (CBOR or MessagePack).
+    */
+    const std::size_t byte;
+
+  private:
+    parse_error(int id_, std::size_t byte_, const char* what_arg)
+        : exception(id_, what_arg), byte(byte_) {}
+
+    static std::string position_string(const position_t& pos)
+    {
+        return concat(" at line ", std::to_string(pos.lines_read + 1),
+                      ", column ", std::to_string(pos.chars_read_current_line));
+    }
+};
+
+/// @brief exception indicating errors with iterators
+/// @sa https://json.nlohmann.me/api/basic_json/invalid_iterator/
+class invalid_iterator : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static invalid_iterator create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("invalid_iterator", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    invalid_iterator(int id_, const char* what_arg)
+        : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating executing a member function with a wrong type
+/// @sa https://json.nlohmann.me/api/basic_json/type_error/
+class type_error : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static type_error create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("type_error", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating access out of the defined range
+/// @sa https://json.nlohmann.me/api/basic_json/out_of_range/
+class out_of_range : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static out_of_range create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("out_of_range", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating other library errors
+/// @sa https://json.nlohmann.me/api/basic_json/other_error/
+class other_error : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static other_error create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("other_error", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/identity_tag.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// dispatching helper struct
+template <class T> struct identity_tag {};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/std_fs.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+#if JSON_HAS_EXPERIMENTAL_FILESYSTEM
+#include <experimental/filesystem>
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+namespace std_fs = std::experimental::filesystem;
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+#elif JSON_HAS_FILESYSTEM
+#include <filesystem> // NOLINT(build/c++17)
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+namespace std_fs = std::filesystem;
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+#endif
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_null()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be null, but is ", j.type_name()), &j));
+    }
+    n = nullptr;
+}
+
+#ifdef JSON_HAS_CPP_17
+#ifndef JSON_USE_IMPLICIT_CONVERSIONS
+template<typename BasicJsonType, typename T>
+void from_json(const BasicJsonType& j, std::optional<T>& opt)
+{
+    if (j.is_null())
+    {
+        opt = std::nullopt;
+    }
+    else
+    {
+        opt.emplace(j.template get<T>());
+    }
+}
+
+#endif // JSON_USE_IMPLICIT_CONVERSIONS
+#endif // JSON_HAS_CPP_17
+
+// overloads for basic_json template parameters
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t < std::is_arithmetic<ArithmeticType>::value&&
+                         !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+                         int > = 0 >
+void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+
+        case value_t::null:
+        case value_t::object:
+        case value_t::array:
+        case value_t::string:
+        case value_t::boolean:
+        case value_t::binary:
+        case value_t::discarded:
+        default:
+            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
+    }
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::boolean_t& b)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_boolean()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be boolean, but is ", j.type_name()), &j));
+    }
+    b = *j.template get_ptr<const typename BasicJsonType::boolean_t*>();
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::string_t& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template <
+    typename BasicJsonType, typename StringType,
+    enable_if_t <
+        std::is_assignable<StringType&, const typename BasicJsonType::string_t>::value
+        && is_detected_exact<typename BasicJsonType::string_t::value_type, value_type_t, StringType>::value
+        && !std::is_same<typename BasicJsonType::string_t, StringType>::value
+        && !is_json_ref<StringType>::value, int > = 0 >
+inline void from_json(const BasicJsonType& j, StringType& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_float_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_unsigned_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_integer_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+#if !JSON_DISABLE_ENUM_SERIALIZATION
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, EnumType& e)
+{
+    typename std::underlying_type<EnumType>::type val;
+    get_arithmetic_value(j, val);
+    e = static_cast<EnumType>(val);
+}
+#endif  // JSON_DISABLE_ENUM_SERIALIZATION
+
+// forward_list doesn't have an insert method
+template<typename BasicJsonType, typename T, typename Allocator,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    l.clear();
+    std::transform(j.rbegin(), j.rend(),
+                   std::front_inserter(l), [](const BasicJsonType & i)
+    {
+        return i.template get<T>();
+    });
+}
+
+// valarray doesn't have an insert method
+template<typename BasicJsonType, typename T,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, std::valarray<T>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    l.resize(j.size());
+    std::transform(j.begin(), j.end(), std::begin(l),
+                   [](const BasicJsonType & elem)
+    {
+        return elem.template get<T>();
+    });
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json(const BasicJsonType& j, T (&arr)[N])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType, typename T, std::size_t N1, std::size_t N2>
+auto from_json(const BasicJsonType& j, T (&arr)[N1][N2])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i1 = 0; i1 < N1; ++i1)
+    {
+        for (std::size_t i2 = 0; i2 < N2; ++i2)
+        {
+            arr[i1][i2] = j.at(i1).at(i2).template get<T>();
+        }
+    }
+}
+
+template<typename BasicJsonType, typename T, std::size_t N1, std::size_t N2, std::size_t N3>
+auto from_json(const BasicJsonType& j, T (&arr)[N1][N2][N3])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i1 = 0; i1 < N1; ++i1)
+    {
+        for (std::size_t i2 = 0; i2 < N2; ++i2)
+        {
+            for (std::size_t i3 = 0; i3 < N3; ++i3)
+            {
+                arr[i1][i2][i3] = j.at(i1).at(i2).at(i3).template get<T>();
+            }
+        }
+    }
+}
+
+template<typename BasicJsonType, typename T, std::size_t N1, std::size_t N2, std::size_t N3, std::size_t N4>
+auto from_json(const BasicJsonType& j, T (&arr)[N1][N2][N3][N4])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i1 = 0; i1 < N1; ++i1)
+    {
+        for (std::size_t i2 = 0; i2 < N2; ++i2)
+        {
+            for (std::size_t i3 = 0; i3 < N3; ++i3)
+            {
+                for (std::size_t i4 = 0; i4 < N4; ++i4)
+                {
+                    arr[i1][i2][i3][i4] = j.at(i1).at(i2).at(i3).at(i4).template get<T>();
+                }
+            }
+        }
+    }
+}
+
+template<typename BasicJsonType>
+inline void from_json_array_impl(const BasicJsonType& j, typename BasicJsonType::array_t& arr, priority_tag<3> /*unused*/)
+{
+    arr = *j.template get_ptr<const typename BasicJsonType::array_t*>();
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr,
+                          priority_tag<2> /*unused*/)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType,
+         enable_if_t<
+             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+             int> = 0>
+auto from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, priority_tag<1> /*unused*/)
+-> decltype(
+    arr.reserve(std::declval<typename ConstructibleArrayType::size_type>()),
+    j.template get<typename ConstructibleArrayType::value_type>(),
+    void())
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    ret.reserve(j.size());
+    std::transform(j.begin(), j.end(),
+                   std::inserter(ret, end(ret)), [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType,
+         enable_if_t<
+             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+             int> = 0>
+inline void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr,
+                                 priority_tag<0> /*unused*/)
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    std::transform(
+        j.begin(), j.end(), std::inserter(ret, end(ret)),
+        [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template < typename BasicJsonType, typename ConstructibleArrayType,
+           enable_if_t <
+               is_constructible_array_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_object_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !std::is_same<ConstructibleArrayType, typename BasicJsonType::binary_t>::value&&
+               !is_basic_json<ConstructibleArrayType>::value,
+               int > = 0 >
+auto from_json(const BasicJsonType& j, ConstructibleArrayType& arr)
+-> decltype(from_json_array_impl(j, arr, priority_tag<3> {}),
+j.template get<typename ConstructibleArrayType::value_type>(),
+void())
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    from_json_array_impl(j, arr, priority_tag<3> {});
+}
+
+template < typename BasicJsonType, typename T, std::size_t... Idx >
+std::array<T, sizeof...(Idx)> from_json_inplace_array_impl(BasicJsonType&& j,
+        identity_tag<std::array<T, sizeof...(Idx)>> /*unused*/, index_sequence<Idx...> /*unused*/)
+{
+    return { { std::forward<BasicJsonType>(j).at(Idx).template get<T>()... } };
+}
+
+template < typename BasicJsonType, typename T, std::size_t N >
+auto from_json(BasicJsonType&& j, identity_tag<std::array<T, N>> tag)
+-> decltype(from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {}))
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    return from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {});
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::binary_t& bin)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_binary()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be binary, but is ", j.type_name()), &j));
+    }
+
+    bin = *j.template get_ptr<const typename BasicJsonType::binary_t*>();
+}
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         enable_if_t<is_constructible_object_type<BasicJsonType, ConstructibleObjectType>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be object, but is ", j.type_name()), &j));
+    }
+
+    ConstructibleObjectType ret;
+    const auto* inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
+    using value_type = typename ConstructibleObjectType::value_type;
+    std::transform(
+        inner_object->begin(), inner_object->end(),
+        std::inserter(ret, ret.begin()),
+        [](typename BasicJsonType::object_t::value_type const & p)
+    {
+        return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
+    });
+    obj = std::move(ret);
+}
+
+// overload for arithmetic types, not chosen for basic_json template arguments
+// (BooleanType, etc..); note: Is it really necessary to provide explicit
+// overloads for boolean_t etc. in case of a custom BooleanType which is not
+// an arithmetic type?
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t <
+               std::is_arithmetic<ArithmeticType>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_unsigned_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_integer_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_float_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+               int > = 0 >
+inline void from_json(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+        case value_t::boolean:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::boolean_t*>());
+            break;
+        }
+
+        case value_t::null:
+        case value_t::object:
+        case value_t::array:
+        case value_t::string:
+        case value_t::binary:
+        case value_t::discarded:
+        default:
+            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
+    }
+}
+
+template<typename BasicJsonType, typename... Args, std::size_t... Idx>
+std::tuple<Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+{
+    return std::make_tuple(std::forward<BasicJsonType>(j).at(Idx).template get<Args>()...);
+}
+
+template < typename BasicJsonType, class A1, class A2 >
+std::pair<A1, A2> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::pair<A1, A2>> /*unused*/, priority_tag<0> /*unused*/)
+{
+    return {std::forward<BasicJsonType>(j).at(0).template get<A1>(),
+            std::forward<BasicJsonType>(j).at(1).template get<A2>()};
+}
+
+template<typename BasicJsonType, typename A1, typename A2>
+inline void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priority_tag<1> /*unused*/)
+{
+    p = from_json_tuple_impl(std::forward<BasicJsonType>(j), identity_tag<std::pair<A1, A2>> {}, priority_tag<0> {});
+}
+
+template<typename BasicJsonType, typename... Args>
+std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
+{
+    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+}
+
+template<typename BasicJsonType, typename... Args>
+inline void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
+{
+    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+}
+
+template<typename BasicJsonType, typename TupleRelated>
+auto from_json(BasicJsonType&& j, TupleRelated&& t)
+-> decltype(from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {}))
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    return from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {});
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Compare, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+inline void from_json(const BasicJsonType& j, std::map<Key, Value, Compare, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &j));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Hash, typename KeyEqual, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+inline void from_json(const BasicJsonType& j, std::unordered_map<Key, Value, Hash, KeyEqual, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &j));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, std_fs::path& p)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+    p = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+#endif
+
+struct from_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(const BasicJsonType& j, T&& val) const
+    noexcept(noexcept(from_json(j, std::forward<T>(val))))
+    -> decltype(from_json(j, std::forward<T>(val)))
+    {
+        return from_json(j, std::forward<T>(val));
+    }
+};
+
+}  // namespace detail
+
+#ifndef JSON_HAS_CPP_17
+/// namespace to hold default `from_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+{
+#endif
+JSON_INLINE_VARIABLE constexpr const auto& from_json = // NOLINT(misc-definitions-in-headers)
+    detail::static_const<detail::from_json_fn>::value;
+#ifndef JSON_HAS_CPP_17
+}  // namespace
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/conversions/to_json.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // copy
+#include <iterator> // begin, end
+#ifdef JSON_HAS_CPP_17
+    #include <optional> // optional
+#endif
+#include <string> // string
+#include <tuple> // tuple, get
+#include <type_traits> // is_same, is_constructible, is_floating_point, is_enum, underlying_type
+#include <utility> // move, forward, declval, pair
+#include <valarray> // valarray
+#include <vector> // vector
+
+// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // size_t
+#include <iterator> // forward_iterator_tag
+#include <tuple> // tuple_size, get, tuple_element
+#include <utility> // move
+
+#if JSON_HAS_RANGES
+    #include <ranges> // enable_borrowed_range
+#endif
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/string_utils.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // size_t
+#include <string> // string, to_string
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename StringType>
+void int_to_string(StringType& target, std::size_t value)
+{
+    // For ADL
+    using std::to_string;
+    target = to_string(value);
+}
+
+template<typename StringType>
+StringType to_string(std::size_t value)
+{
+    StringType result;
+    int_to_string(result, value);
+    return result;
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename IteratorType> class iteration_proxy_value
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    using value_type = iteration_proxy_value;
+    using pointer = value_type *;
+    using reference = value_type &;
+    using iterator_category = std::forward_iterator_tag;
+    using string_type = typename std::remove_cv< typename std::remove_reference<decltype( std::declval<IteratorType>().key() ) >::type >::type;
+
+  private:
+    /// the iterator
+    IteratorType anchor{};
+    /// an index for arrays (used to create key names)
+    std::size_t array_index = 0;
+    /// last stringified array index
+    mutable std::size_t array_index_last = 0;
+    /// a string representation of the array index
+    mutable string_type array_index_str = "0";
+    /// an empty string (to return a reference for primitive values)
+    string_type empty_str{};
+
+  public:
+    explicit iteration_proxy_value() = default;
+    explicit iteration_proxy_value(IteratorType it, std::size_t array_index_ = 0)
+    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
+             && std::is_nothrow_default_constructible<string_type>::value)
+        : anchor(std::move(it))
+        , array_index(array_index_)
+    {}
+
+    iteration_proxy_value(iteration_proxy_value const&) = default;
+    iteration_proxy_value& operator=(iteration_proxy_value const&) = default;
+    // older GCCs are a bit fussy and require explicit noexcept specifiers on defaulted functions
+    iteration_proxy_value(iteration_proxy_value&&)
+    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
+             && std::is_nothrow_move_constructible<string_type>::value) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor,cppcoreguidelines-noexcept-move-operations)
+    iteration_proxy_value& operator=(iteration_proxy_value&&)
+    noexcept(std::is_nothrow_move_assignable<IteratorType>::value
+             && std::is_nothrow_move_assignable<string_type>::value) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor,cppcoreguidelines-noexcept-move-operations)
+    ~iteration_proxy_value() = default;
+
+    /// dereference operator (needed for range-based for)
+    const iteration_proxy_value& operator*() const
+    {
+        return *this;
+    }
+
+    /// increment operator (needed for range-based for)
+    iteration_proxy_value& operator++()
+    {
+        ++anchor;
+        ++array_index;
+
+        return *this;
+    }
+
+    iteration_proxy_value operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto tmp = iteration_proxy_value(anchor, array_index);
+        ++anchor;
+        ++array_index;
+        return tmp;
+    }
+
+    /// equality operator (needed for InputIterator)
+    bool operator==(const iteration_proxy_value& o) const
+    {
+        return anchor == o.anchor;
+    }
+
+    /// inequality operator (needed for range-based for)
+    bool operator!=(const iteration_proxy_value& o) const
+    {
+        return anchor != o.anchor;
+    }
+
+    /// return key of the iterator
+    const string_type& key() const
+    {
+        JSON_ASSERT(anchor.m_object != nullptr);
+
+        switch (anchor.m_object->type())
+        {
+            // use integer array index as key
+            case value_t::array:
+            {
+                if (array_index != array_index_last)
+                {
+                    int_to_string( array_index_str, array_index );
+                    array_index_last = array_index;
+                }
+                return array_index_str;
+            }
+
+            // use key from the object
+            case value_t::object:
+                return anchor.key();
+
+            // use an empty key for all primitive types
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return empty_str;
+        }
+    }
+
+    /// return value of the iterator
+    typename IteratorType::reference value() const
+    {
+        return anchor.value();
+    }
+};
+
+/// proxy class for the items() function
+template<typename IteratorType> class iteration_proxy
+{
+  private:
+    /// the container to iterate
+    typename IteratorType::pointer container = nullptr;
+
+  public:
+    explicit iteration_proxy() = default;
+
+    /// construct iteration proxy from a container
+    explicit iteration_proxy(typename IteratorType::reference cont) noexcept
+        : container(&cont) {}
+
+    iteration_proxy(iteration_proxy const&) = default;
+    iteration_proxy& operator=(iteration_proxy const&) = default;
+    iteration_proxy(iteration_proxy&&) noexcept = default;
+    iteration_proxy& operator=(iteration_proxy&&) noexcept = default;
+    ~iteration_proxy() = default;
+
+    /// return iterator begin (needed for range-based for)
+    iteration_proxy_value<IteratorType> begin() const noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container->begin());
+    }
+
+    /// return iterator end (needed for range-based for)
+    iteration_proxy_value<IteratorType> end() const noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container->end());
+    }
+};
+
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 0, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
+{
+    return i.key();
+}
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 1, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.value())
+{
+    return i.value();
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// The Addition to the STD Namespace is required to add
+// Structured Bindings Support to the iteration_proxy_value class
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+namespace std
+{
+
+#if defined(__clang__)
+    // Fix: https://github.com/nlohmann/json/issues/1401
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wmismatched-tags"
+#endif
+template<typename IteratorType>
+class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>> // NOLINT(cert-dcl58-cpp)
+            : public std::integral_constant<std::size_t, 2> {};
+
+template<std::size_t N, typename IteratorType>
+class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >> // NOLINT(cert-dcl58-cpp)
+{
+  public:
+    using type = decltype(
+                     get<N>(std::declval <
+                            ::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
+};
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+
+}  // namespace std
+
+#if JSON_HAS_RANGES
+    template <typename IteratorType>
+    inline constexpr bool ::std::ranges::enable_borrowed_range<::nlohmann::detail::iteration_proxy<IteratorType>> = true;
+#endif
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/std_fs.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+//////////////////
+// constructors //
+//////////////////
+
+/*
+ * Note all external_constructor<>::construct functions need to call
+ * j.m_data.m_value.destroy(j.m_data.m_type) to avoid a memory leak in case j contains an
+ * allocated value (e.g., a string). See bug issue
+ * https://github.com/nlohmann/json/issues/2865 for more information.
+ */
+
+template<value_t> struct external_constructor;
+
+template<>
+struct external_constructor<value_t::boolean>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::boolean_t b) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::boolean;
+        j.m_data.m_value = b;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::string>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::string_t& s)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value = s;
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value = std::move(s);
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleStringType,
+               enable_if_t < !std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleStringType& str)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value.string = j.template create<typename BasicJsonType::string_t>(str);
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::binary>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::binary_t& b)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::binary;
+        j.m_data.m_value = typename BasicJsonType::binary_t(b);
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::binary_t&& b)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::binary;
+        j.m_data.m_value = typename BasicJsonType::binary_t(std::move(b));
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_float>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_float_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_float;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_unsigned>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_unsigned_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_unsigned;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_integer>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_integer_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_integer;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::array>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::array_t& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = arr;
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = std::move(arr);
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleArrayType,
+               enable_if_t < !std::is_same<CompatibleArrayType, typename BasicJsonType::array_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleArrayType& arr)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value.array = j.template create<typename BasicJsonType::array_t>(begin(arr), end(arr));
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const std::vector<bool>& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = value_t::array;
+        j.m_data.m_value.array->reserve(arr.size());
+        for (const bool x : arr)
+        {
+            j.m_data.m_value.array->push_back(x);
+            j.set_parent(j.m_data.m_value.array->back());
+        }
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType, typename T,
+             enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+    static void construct(BasicJsonType& j, const std::valarray<T>& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = value_t::array;
+        j.m_data.m_value.array->resize(arr.size());
+        if (arr.size() > 0)
+        {
+            std::copy(std::begin(arr), std::end(arr), j.m_data.m_value.array->begin());
+        }
+        j.set_parents();
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::object>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::object_t& obj)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value = obj;
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value = std::move(obj);
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleObjectType,
+               enable_if_t < !std::is_same<CompatibleObjectType, typename BasicJsonType::object_t>::value, int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleObjectType& obj)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value.object = j.template create<typename BasicJsonType::object_t>(begin(obj), end(obj));
+        j.set_parents();
+        j.assert_invariant();
+    }
+};
+
+/////////////
+// to_json //
+/////////////
+
+#ifdef JSON_HAS_CPP_17
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_constructible<BasicJsonType, T>::value, int> = 0>
+void to_json(BasicJsonType& j, const std::optional<T>& opt)
+{
+    if (opt.has_value())
+    {
+        j = *opt;
+    }
+    else
+    {
+        j = nullptr;
+    }
+}
+#endif
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, typename BasicJsonType::boolean_t>::value, int> = 0>
+inline void to_json(BasicJsonType& j, T b) noexcept
+{
+    external_constructor<value_t::boolean>::construct(j, b);
+}
+
+template < typename BasicJsonType, typename BoolRef,
+           enable_if_t <
+               ((std::is_same<std::vector<bool>::reference, BoolRef>::value
+                 && !std::is_same <std::vector<bool>::reference, typename BasicJsonType::boolean_t&>::value)
+                || (std::is_same<std::vector<bool>::const_reference, BoolRef>::value
+                    && !std::is_same <detail::uncvref_t<std::vector<bool>::const_reference>,
+                                      typename BasicJsonType::boolean_t >::value))
+               && std::is_convertible<const BoolRef&, typename BasicJsonType::boolean_t>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const BoolRef& b) noexcept
+{
+    external_constructor<value_t::boolean>::construct(j, static_cast<typename BasicJsonType::boolean_t>(b));
+}
+
+template<typename BasicJsonType, typename CompatibleString,
+         enable_if_t<std::is_constructible<typename BasicJsonType::string_t, CompatibleString>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const CompatibleString& s)
+{
+    external_constructor<value_t::string>::construct(j, s);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+{
+    external_constructor<value_t::string>::construct(j, std::move(s));
+}
+
+template<typename BasicJsonType, typename FloatType,
+         enable_if_t<std::is_floating_point<FloatType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, FloatType val) noexcept
+{
+    external_constructor<value_t::number_float>::construct(j, static_cast<typename BasicJsonType::number_float_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberUnsignedType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_unsigned_t, CompatibleNumberUnsignedType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, CompatibleNumberUnsignedType val) noexcept
+{
+    external_constructor<value_t::number_unsigned>::construct(j, static_cast<typename BasicJsonType::number_unsigned_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberIntegerType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_integer_t, CompatibleNumberIntegerType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, CompatibleNumberIntegerType val) noexcept
+{
+    external_constructor<value_t::number_integer>::construct(j, static_cast<typename BasicJsonType::number_integer_t>(val));
+}
+
+#if !JSON_DISABLE_ENUM_SERIALIZATION
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, EnumType e) noexcept
+{
+    using underlying_type = typename std::underlying_type<EnumType>::type;
+    static constexpr value_t integral_value_t = std::is_unsigned<underlying_type>::value ? value_t::number_unsigned : value_t::number_integer;
+    external_constructor<integral_value_t>::construct(j, static_cast<underlying_type>(e));
+}
+#endif  // JSON_DISABLE_ENUM_SERIALIZATION
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const std::vector<bool>& e)
+{
+    external_constructor<value_t::array>::construct(j, e);
+}
+
+template < typename BasicJsonType, typename CompatibleArrayType,
+           enable_if_t < is_compatible_array_type<BasicJsonType,
+                         CompatibleArrayType>::value&&
+                         !is_compatible_object_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !is_compatible_string_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !std::is_same<typename BasicJsonType::binary_t, CompatibleArrayType>::value&&
+                         !is_basic_json<CompatibleArrayType>::value,
+                         int > = 0 >
+inline void to_json(BasicJsonType& j, const CompatibleArrayType& arr)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const typename BasicJsonType::binary_t& bin)
+{
+    external_constructor<value_t::binary>::construct(j, bin);
+}
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const std::valarray<T>& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template < typename BasicJsonType, typename CompatibleObjectType,
+           enable_if_t < is_compatible_object_type<BasicJsonType, CompatibleObjectType>::value&& !is_basic_json<CompatibleObjectType>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const CompatibleObjectType& obj)
+{
+    external_constructor<value_t::object>::construct(j, obj);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+{
+    external_constructor<value_t::object>::construct(j, std::move(obj));
+}
+
+template <
+    typename BasicJsonType, typename T, std::size_t N,
+    enable_if_t < !std::is_constructible<typename BasicJsonType::string_t,
+                  const T(&)[N]>::value, // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                  int > = 0 >
+inline void to_json(BasicJsonType& j, const T(&arr)[N]) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template < typename BasicJsonType, typename T1, typename T2, enable_if_t < std::is_constructible<BasicJsonType, T1>::value&& std::is_constructible<BasicJsonType, T2>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const std::pair<T1, T2>& p)
+{
+    j = { p.first, p.second };
+}
+
+// for https://github.com/nlohmann/json/pull/1134
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const T& b)
+{
+    j = { {b.key(), b.value()} };
+}
+
+template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
+inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<Idx...> /*unused*/)
+{
+    j = { std::get<Idx>(t)... };
+}
+
+template<typename BasicJsonType, typename T, enable_if_t<is_constructible_tuple<BasicJsonType, T>::value, int > = 0>
+inline void to_json(BasicJsonType& j, const T& t)
+{
+    to_json_tuple_impl(j, t, make_index_sequence<std::tuple_size<T>::value> {});
+}
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const std_fs::path& p)
+{
+    j = p.string();
+}
+#endif
+
+struct to_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(BasicJsonType& j, T&& val) const noexcept(noexcept(to_json(j, std::forward<T>(val))))
+    -> decltype(to_json(j, std::forward<T>(val)), void())
+    {
+        return to_json(j, std::forward<T>(val));
+    }
+};
+}  // namespace detail
+
+#ifndef JSON_HAS_CPP_17
+/// namespace to hold default `to_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+{
+#endif
+JSON_INLINE_VARIABLE constexpr const auto& to_json = // NOLINT(misc-definitions-in-headers)
+    detail::static_const<detail::to_json_fn>::value;
+#ifndef JSON_HAS_CPP_17
+}  // namespace
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/identity_tag.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @sa https://json.nlohmann.me/api/adl_serializer/
+template<typename ValueType, typename>
+struct adl_serializer
+{
+    /// @brief convert a JSON value to any value type
+    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto from_json(BasicJsonType && j, TargetType& val) noexcept(
+        noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
+    {
+        ::nlohmann::from_json(std::forward<BasicJsonType>(j), val);
+    }
+
+    /// @brief convert a JSON value to any value type
+    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto from_json(BasicJsonType && j) noexcept(
+    noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {})))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {}))
+    {
+        return ::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {});
+    }
+
+    /// @brief convert any value type to a JSON value
+    /// @sa https://json.nlohmann.me/api/adl_serializer/to_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto to_json(BasicJsonType& j, TargetType && val) noexcept(
+        noexcept(::nlohmann::to_json(j, std::forward<TargetType>(val))))
+    -> decltype(::nlohmann::to_json(j, std::forward<TargetType>(val)), void())
+    {
+        ::nlohmann::to_json(j, std::forward<TargetType>(val));
+    }
+};
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/byte_container_with_subtype.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstdint> // uint8_t, uint64_t
+#include <tuple> // tie
+#include <utility> // move
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @brief an internal type for a backed binary type
+/// @sa https://json.nlohmann.me/api/byte_container_with_subtype/
+template<typename BinaryType>
+class byte_container_with_subtype : public BinaryType
+{
+  public:
+    using container_type = BinaryType;
+    using subtype_type = std::uint64_t;
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype() noexcept(noexcept(container_type()))
+        : container_type()
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(const container_type& b) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(container_type&& b) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(const container_type& b, subtype_type subtype_) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+        , m_subtype(subtype_)
+        , m_has_subtype(true)
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(container_type&& b, subtype_type subtype_) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+        , m_subtype(subtype_)
+        , m_has_subtype(true)
+    {}
+
+    bool operator==(const byte_container_with_subtype& rhs) const
+    {
+        return std::tie(static_cast<const BinaryType&>(*this), m_subtype, m_has_subtype) ==
+               std::tie(static_cast<const BinaryType&>(rhs), rhs.m_subtype, rhs.m_has_subtype);
+    }
+
+    bool operator!=(const byte_container_with_subtype& rhs) const
+    {
+        return !(rhs == *this);
+    }
+
+    /// @brief sets the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/set_subtype/
+    void set_subtype(subtype_type subtype_) noexcept
+    {
+        m_subtype = subtype_;
+        m_has_subtype = true;
+    }
+
+    /// @brief return the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/subtype/
+    constexpr subtype_type subtype() const noexcept
+    {
+        return m_has_subtype ? m_subtype : static_cast<subtype_type>(-1);
+    }
+
+    /// @brief return whether the value has a subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/has_subtype/
+    constexpr bool has_subtype() const noexcept
+    {
+        return m_has_subtype;
+    }
+
+    /// @brief clears the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/clear_subtype/
+    void clear_subtype() noexcept
+    {
+        m_subtype = 0;
+        m_has_subtype = false;
+    }
+
+  private:
+    subtype_type m_subtype = 0;
+    bool m_has_subtype = false;
+};
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/conversions/from_json.hpp>
+
+// #include <nlohmann/detail/conversions/to_json.hpp>
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/hash.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstdint> // uint8_t
+#include <cstddef> // size_t
+#include <functional> // hash
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// boost::hash_combine
+inline std::size_t combine(std::size_t seed, std::size_t h) noexcept
+{
+    seed ^= h + 0x9e3779b9 + (seed << 6U) + (seed >> 2U);
+    return seed;
+}
+
+/*!
+@brief hash a JSON value
+
+The hash function tries to rely on std::hash where possible. Furthermore, the
+type of the JSON value is taken into account to have different hash values for
+null, 0, 0U, and false, etc.
+
+@tparam BasicJsonType basic_json specialization
+@param j JSON value to hash
+@return hash value of j
+*/
+template<typename BasicJsonType>
+std::size_t hash(const BasicJsonType& j)
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+    const auto type = static_cast<std::size_t>(j.type());
+    switch (j.type())
+    {
+        case BasicJsonType::value_t::null:
+        case BasicJsonType::value_t::discarded:
+        {
+            return combine(type, 0);
+        }
+
+        case BasicJsonType::value_t::object:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j.items())
+            {
+                const auto h = std::hash<string_t> {}(element.key());
+                seed = combine(seed, h);
+                seed = combine(seed, hash(element.value()));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::array:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j)
+            {
+                seed = combine(seed, hash(element));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::string:
+        {
+            const auto h = std::hash<string_t> {}(j.template get_ref<const string_t&>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::boolean:
+        {
+            const auto h = std::hash<bool> {}(j.template get<bool>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_integer:
+        {
+            const auto h = std::hash<number_integer_t> {}(j.template get<number_integer_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_unsigned:
+        {
+            const auto h = std::hash<number_unsigned_t> {}(j.template get<number_unsigned_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_float:
+        {
+            const auto h = std::hash<number_float_t> {}(j.template get<number_float_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::binary:
+        {
+            auto seed = combine(type, j.get_binary().size());
+            const auto h = std::hash<bool> {}(j.get_binary().has_subtype());
+            seed = combine(seed, h);
+            seed = combine(seed, static_cast<std::size_t>(j.get_binary().subtype()));
+            for (const auto byte : j.get_binary())
+            {
+                seed = combine(seed, std::hash<std::uint8_t> {}(byte));
+            }
+            return seed;
+        }
+
+        default:                   // LCOV_EXCL_LINE
+            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            return 0;              // LCOV_EXCL_LINE
+    }
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/binary_reader.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // generate_n
+#include <array> // array
+#include <cmath> // ldexp
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstdio> // snprintf
+#include <cstring> // memcpy
+#include <iterator> // back_inserter
+#include <limits> // numeric_limits
+#include <string> // char_traits, string
+#include <utility> // make_pair, move
+#include <vector> // vector
+#ifdef __cpp_lib_byteswap
+    #include <bit>  //byteswap
+#endif
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstring> // strlen
+#include <iterator> // begin, end, iterator_traits, random_access_iterator_tag, distance, next
+#include <memory> // shared_ptr, make_shared, addressof
+#include <numeric> // accumulate
+#include <string> // string, char_traits
+#include <type_traits> // enable_if, is_base_of, is_pointer, is_integral, remove_pointer
+#include <utility> // pair, declval
+
+#ifndef JSON_NO_IO
+    #include <cstdio>   // FILE *
+    #include <istream>  // istream
+#endif                  // JSON_NO_IO
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/iterators/iterator_traits.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// the supported input formats
+enum class input_format_t { json, cbor, msgpack, ubjson, bson, bjdata };
+
+////////////////////
+// input adapters //
+////////////////////
+
+#ifndef JSON_NO_IO
+/*!
+Input adapter for stdio file access. This adapter read only 1 byte and do not use any
+ buffer. This adapter is a very low level adapter.
+*/
+class file_input_adapter
+{
+  public:
+    using char_type = char;
+
+    JSON_HEDLEY_NON_NULL(2)
+    explicit file_input_adapter(std::FILE* f) noexcept
+        : m_file(f)
+    {
+        JSON_ASSERT(m_file != nullptr);
+    }
+
+    // make class move-only
+    file_input_adapter(const file_input_adapter&) = delete;
+    file_input_adapter(file_input_adapter&&) noexcept = default;
+    file_input_adapter& operator=(const file_input_adapter&) = delete;
+    file_input_adapter& operator=(file_input_adapter&&) = delete;
+    ~file_input_adapter() = default;
+
+    std::char_traits<char>::int_type get_character() noexcept
+    {
+        return std::fgetc(m_file);
+    }
+
+    // returns the number of characters successfully read
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        return fread(dest, 1, sizeof(T) * count, m_file);
+    }
+
+  private:
+    /// the file pointer to read from
+    std::FILE* m_file;
+};
+
+/*!
+Input adapter for a (caching) istream. Ignores a UFT Byte Order Mark at
+beginning of input. Does not support changing the underlying std::streambuf
+in mid-input. Maintains underlying std::istream and std::streambuf to support
+subsequent use of standard std::istream operations to process any input
+characters following those used in parsing the JSON input.  Clears the
+std::istream flags; any input errors (e.g., EOF) will be detected by the first
+subsequent call for input from the std::istream.
+*/
+class input_stream_adapter
+{
+  public:
+    using char_type = char;
+
+    ~input_stream_adapter()
+    {
+        // clear stream flags; we use underlying streambuf I/O, do not
+        // maintain ifstream flags, except eof
+        if (is != nullptr)
+        {
+            is->clear(is->rdstate() & std::ios::eofbit);
+        }
+    }
+
+    explicit input_stream_adapter(std::istream& i)
+        : is(&i), sb(i.rdbuf())
+    {}
+
+    // delete because of pointer members
+    input_stream_adapter(const input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&&) = delete;
+
+    input_stream_adapter(input_stream_adapter&& rhs) noexcept
+        : is(rhs.is), sb(rhs.sb)
+    {
+        rhs.is = nullptr;
+        rhs.sb = nullptr;
+    }
+
+    // std::istream/std::streambuf use std::char_traits<char>::to_int_type, to
+    // ensure that std::char_traits<char>::eof() and the character 0xFF do not
+    // end up as the same value, e.g. 0xFFFFFFFF.
+    std::char_traits<char>::int_type get_character()
+    {
+        auto res = sb->sbumpc();
+        // set eof manually, as we don't use the istream interface.
+        if (JSON_HEDLEY_UNLIKELY(res == std::char_traits<char>::eof()))
+        {
+            is->clear(is->rdstate() | std::ios::eofbit);
+        }
+        return res;
+    }
+
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        auto res = static_cast<std::size_t>(sb->sgetn(reinterpret_cast<char*>(dest), static_cast<std::streamsize>(count * sizeof(T))));
+        if (JSON_HEDLEY_UNLIKELY(res < count * sizeof(T)))
+        {
+            is->clear(is->rdstate() | std::ios::eofbit);
+        }
+        return res;
+    }
+
+  private:
+    /// the associated input stream
+    std::istream* is = nullptr;
+    std::streambuf* sb = nullptr;
+};
+#endif  // JSON_NO_IO
+
+// General-purpose iterator-based adapter. It might not be as fast as
+// theoretically possible for some containers, but it is extremely versatile.
+template<typename IteratorType>
+class iterator_input_adapter
+{
+  public:
+    using char_type = typename std::iterator_traits<IteratorType>::value_type;
+
+    iterator_input_adapter(IteratorType first, IteratorType last)
+        : current(std::move(first)), end(std::move(last))
+    {}
+
+    typename char_traits<char_type>::int_type get_character()
+    {
+        if (JSON_HEDLEY_LIKELY(current != end))
+        {
+            auto result = char_traits<char_type>::to_int_type(*current);
+            std::advance(current, 1);
+            return result;
+        }
+
+        return char_traits<char_type>::eof();
+    }
+
+    // for general iterators, we cannot really do something better than falling back to processing the range one-by-one
+    template<class T>
+    std::size_t get_elements(T* dest, std::size_t count = 1)
+    {
+        auto* ptr = reinterpret_cast<char*>(dest);
+        for (std::size_t read_index = 0; read_index < count * sizeof(T); ++read_index)
+        {
+            if (JSON_HEDLEY_LIKELY(current != end))
+            {
+                ptr[read_index] = static_cast<char>(*current);
+                std::advance(current, 1);
+            }
+            else
+            {
+                return read_index;
+            }
+        }
+        return count * sizeof(T);
+    }
+
+  private:
+    IteratorType current;
+    IteratorType end;
+
+    template<typename BaseInputAdapter, size_t T>
+    friend struct wide_string_input_helper;
+
+    bool empty() const
+    {
+        return current == end;
+    }
+};
+
+template<typename BaseInputAdapter, size_t T>
+struct wide_string_input_helper;
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 4>
+{
+    // UTF-32
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-32 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u) & 0x1Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (wc <= 0xFFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u) & 0x0Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else if (wc <= 0x10FFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | ((static_cast<unsigned int>(wc) >> 18u) & 0x07u));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 12u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 4;
+            }
+            else
+            {
+                // unknown character
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+        }
+    }
+};
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 2>
+{
+    // UTF-16
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-16 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (0xD800 > wc || wc >= 0xE000)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else
+            {
+                if (JSON_HEDLEY_UNLIKELY(!input.empty()))
+                {
+                    const auto wc2 = static_cast<unsigned int>(input.get_character());
+                    const auto charcode = 0x10000u + (((static_cast<unsigned int>(wc) & 0x3FFu) << 10u) | (wc2 & 0x3FFu));
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | (charcode >> 18u));
+                    utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 12u) & 0x3Fu));
+                    utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 6u) & 0x3Fu));
+                    utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (charcode & 0x3Fu));
+                    utf8_bytes_filled = 4;
+                }
+                else
+                {
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                    utf8_bytes_filled = 1;
+                }
+            }
+        }
+    }
+};
+
+// Wraps another input adapter to convert wide character types into individual bytes.
+template<typename BaseInputAdapter, typename WideCharType>
+class wide_string_input_adapter
+{
+  public:
+    using char_type = char;
+
+    wide_string_input_adapter(BaseInputAdapter base)
+        : base_adapter(base) {}
+
+    typename std::char_traits<char>::int_type get_character() noexcept
+    {
+        // check if buffer needs to be filled
+        if (utf8_bytes_index == utf8_bytes_filled)
+        {
+            fill_buffer<sizeof(WideCharType)>();
+
+            JSON_ASSERT(utf8_bytes_filled > 0);
+            JSON_ASSERT(utf8_bytes_index == 0);
+        }
+
+        // use buffer
+        JSON_ASSERT(utf8_bytes_filled > 0);
+        JSON_ASSERT(utf8_bytes_index < utf8_bytes_filled);
+        return utf8_bytes[utf8_bytes_index++];
+    }
+
+    // parsing binary with wchar doesn't make sense, but since the parsing mode can be runtime, we need something here
+    template<class T>
+    std::size_t get_elements(T* /*dest*/, std::size_t /*count*/ = 1)
+    {
+        JSON_THROW(parse_error::create(112, 1, "wide string type cannot be interpreted as binary data", nullptr));
+    }
+
+  private:
+    BaseInputAdapter base_adapter;
+
+    template<size_t T>
+    void fill_buffer()
+    {
+        wide_string_input_helper<BaseInputAdapter, T>::fill_buffer(base_adapter, utf8_bytes, utf8_bytes_index, utf8_bytes_filled);
+    }
+
+    /// a buffer for UTF-8 bytes
+    std::array<std::char_traits<char>::int_type, 4> utf8_bytes = {{0, 0, 0, 0}};
+
+    /// index to the utf8_codes array for the next valid byte
+    std::size_t utf8_bytes_index = 0;
+    /// number of valid bytes in the utf8_codes array
+    std::size_t utf8_bytes_filled = 0;
+};
+
+template<typename IteratorType, typename Enable = void>
+struct iterator_input_adapter_factory
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using adapter_type = iterator_input_adapter<iterator_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(std::move(first), std::move(last));
+    }
+};
+
+template<typename T>
+struct is_iterator_of_multibyte
+{
+    using value_type = typename std::iterator_traits<T>::value_type;
+    enum
+    {
+        value = sizeof(value_type) > 1
+    };
+};
+
+template<typename IteratorType>
+struct iterator_input_adapter_factory<IteratorType, enable_if_t<is_iterator_of_multibyte<IteratorType>::value>>
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using base_adapter_type = iterator_input_adapter<iterator_type>;
+    using adapter_type = wide_string_input_adapter<base_adapter_type, char_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(base_adapter_type(std::move(first), std::move(last)));
+    }
+};
+
+// General purpose iterator-based input
+template<typename IteratorType>
+typename iterator_input_adapter_factory<IteratorType>::adapter_type input_adapter(IteratorType first, IteratorType last)
+{
+    using factory_type = iterator_input_adapter_factory<IteratorType>;
+    return factory_type::create(first, last);
+}
+
+// Convenience shorthand from container to iterator
+// Enables ADL on begin(container) and end(container)
+// Encloses the using declarations in namespace for not to leak them to outside scope
+
+namespace container_input_adapter_factory_impl
+{
+
+using std::begin;
+using std::end;
+
+template<typename ContainerType, typename Enable = void>
+struct container_input_adapter_factory {};
+
+template<typename ContainerType>
+struct container_input_adapter_factory< ContainerType,
+       void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))>>
+       {
+           using adapter_type = decltype(input_adapter(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>())));
+
+           static adapter_type create(const ContainerType& container)
+{
+    return input_adapter(begin(container), end(container));
+}
+       };
+
+}  // namespace container_input_adapter_factory_impl
+
+template<typename ContainerType>
+typename container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::adapter_type input_adapter(const ContainerType& container)
+{
+    return container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::create(container);
+}
+
+// specialization for std::string
+using string_input_adapter_type = decltype(input_adapter(std::declval<std::string>()));
+
+#ifndef JSON_NO_IO
+// Special cases with fast paths
+inline file_input_adapter input_adapter(std::FILE* file)
+{
+    if (file == nullptr)
+    {
+        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+    }
+    return file_input_adapter(file);
+}
+
+inline input_stream_adapter input_adapter(std::istream& stream)
+{
+    return input_stream_adapter(stream);
+}
+
+inline input_stream_adapter input_adapter(std::istream&& stream)
+{
+    return input_stream_adapter(stream);
+}
+#endif  // JSON_NO_IO
+
+using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));
+
+// Null-delimited strings, and the like.
+template < typename CharT,
+           typename std::enable_if <
+               std::is_pointer<CharT>::value&&
+               !std::is_array<CharT>::value&&
+               std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+               sizeof(typename std::remove_pointer<CharT>::type) == 1,
+               int >::type = 0 >
+contiguous_bytes_input_adapter input_adapter(CharT b)
+{
+    if (b == nullptr)
+    {
+        JSON_THROW(parse_error::create(101, 0, "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+    }
+    auto length = std::strlen(reinterpret_cast<const char*>(b));
+    const auto* ptr = reinterpret_cast<const char*>(b);
+    return input_adapter(ptr, ptr + length); // cppcheck-suppress[nullPointerArithmeticRedundantCheck]
+}
+
+template<typename T, std::size_t N>
+auto input_adapter(T (&array)[N]) -> decltype(input_adapter(array, array + N)) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+{
+    return input_adapter(array, array + N);
+}
+
+// This class only handles inputs of input_buffer_adapter type.
+// It's required so that expressions like {ptr, len} can be implicitly cast
+// to the correct adapter.
+class span_input_adapter
+{
+  public:
+    template < typename CharT,
+               typename std::enable_if <
+                   std::is_pointer<CharT>::value&&
+                   std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+                   sizeof(typename std::remove_pointer<CharT>::type) == 1,
+                   int >::type = 0 >
+    span_input_adapter(CharT b, std::size_t l)
+        : ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l) {}
+
+    template<class IteratorType,
+             typename std::enable_if<
+                 std::is_same<typename iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value,
+                 int>::type = 0>
+    span_input_adapter(IteratorType first, IteratorType last)
+        : ia(input_adapter(first, last)) {}
+
+    contiguous_bytes_input_adapter&& get()
+    {
+        return std::move(ia); // NOLINT(hicpp-move-const-arg,performance-move-const-arg)
+    }
+
+  private:
+    contiguous_bytes_input_adapter ia;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/json_sax.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef>
+#include <string> // string
+#include <type_traits> // enable_if_t
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <clocale> // localeconv
+#include <cstddef> // size_t
+#include <cstdio> // snprintf
+#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
+#include <initializer_list> // initializer_list
+#include <string> // char_traits, string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/position_t.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////
+// lexer //
+///////////
+
+template<typename BasicJsonType>
+class lexer_base
+{
+  public:
+    /// token types for the parser
+    enum class token_type
+    {
+        uninitialized,    ///< indicating the scanner is uninitialized
+        literal_true,     ///< the `true` literal
+        literal_false,    ///< the `false` literal
+        literal_null,     ///< the `null` literal
+        value_string,     ///< a string -- use get_string() for actual value
+        value_unsigned,   ///< an unsigned integer -- use get_number_unsigned() for actual value
+        value_integer,    ///< a signed integer -- use get_number_integer() for actual value
+        value_float,      ///< an floating point number -- use get_number_float() for actual value
+        begin_array,      ///< the character for array begin `[`
+        begin_object,     ///< the character for object begin `{`
+        end_array,        ///< the character for array end `]`
+        end_object,       ///< the character for object end `}`
+        name_separator,   ///< the name separator `:`
+        value_separator,  ///< the value separator `,`
+        parse_error,      ///< indicating a parse error
+        end_of_input,     ///< indicating the end of the input buffer
+        literal_or_value  ///< a literal or the begin of a value (only for diagnostics)
+    };
+
+    /// return name of values of type token_type (only used for errors)
+    JSON_HEDLEY_RETURNS_NON_NULL
+    JSON_HEDLEY_CONST
+    static const char* token_type_name(const token_type t) noexcept
+    {
+        switch (t)
+        {
+            case token_type::uninitialized:
+                return "<uninitialized>";
+            case token_type::literal_true:
+                return "true literal";
+            case token_type::literal_false:
+                return "false literal";
+            case token_type::literal_null:
+                return "null literal";
+            case token_type::value_string:
+                return "string literal";
+            case token_type::value_unsigned:
+            case token_type::value_integer:
+            case token_type::value_float:
+                return "number literal";
+            case token_type::begin_array:
+                return "'['";
+            case token_type::begin_object:
+                return "'{'";
+            case token_type::end_array:
+                return "']'";
+            case token_type::end_object:
+                return "'}'";
+            case token_type::name_separator:
+                return "':'";
+            case token_type::value_separator:
+                return "','";
+            case token_type::parse_error:
+                return "<parse error>";
+            case token_type::end_of_input:
+                return "end of input";
+            case token_type::literal_or_value:
+                return "'[', '{', or a literal";
+            // LCOV_EXCL_START
+            default: // catch non-enum values
+                return "unknown token";
+                // LCOV_EXCL_STOP
+        }
+    }
+};
+/*!
+@brief lexical analysis
+
+This class organizes the lexical analysis during JSON deserialization.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class lexer : public lexer_base<BasicJsonType>
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename char_traits<char_type>::int_type;
+
+  public:
+    using token_type = typename lexer_base<BasicJsonType>::token_type;
+
+    explicit lexer(InputAdapterType&& adapter, bool ignore_comments_ = false) noexcept
+        : ia(std::move(adapter))
+        , ignore_comments(ignore_comments_)
+        , decimal_point_char(static_cast<char_int_type>(get_decimal_point()))
+    {}
+
+    // delete because of pointer members
+    lexer(const lexer&) = delete;
+    lexer(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    lexer& operator=(lexer&) = delete;
+    lexer& operator=(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~lexer() = default;
+
+  private:
+    /////////////////////
+    // locales
+    /////////////////////
+
+    /// return the locale-dependent decimal point
+    JSON_HEDLEY_PURE
+    static char get_decimal_point() noexcept
+    {
+        const auto* loc = localeconv();
+        JSON_ASSERT(loc != nullptr);
+        return (loc->decimal_point == nullptr) ? '.' : *(loc->decimal_point);
+    }
+
+    /////////////////////
+    // scan functions
+    /////////////////////
+
+    /*!
+    @brief get codepoint from 4 hex characters following `\u`
+
+    For input "\u c1 c2 c3 c4" the codepoint is:
+      (c1 * 0x1000) + (c2 * 0x0100) + (c3 * 0x0010) + c4
+    = (c1 << 12) + (c2 << 8) + (c3 << 4) + (c4 << 0)
+
+    Furthermore, the possible characters '0'..'9', 'A'..'F', and 'a'..'f'
+    must be converted to the integers 0x0..0x9, 0xA..0xF, 0xA..0xF, resp. The
+    conversion is done by subtracting the offset (0x30, 0x37, and 0x57)
+    between the ASCII value of the character and the desired integer value.
+
+    @return codepoint (0x0000..0xFFFF) or -1 in case of an error (e.g. EOF or
+            non-hex character)
+    */
+    int get_codepoint()
+    {
+        // this function only makes sense after reading `\u`
+        JSON_ASSERT(current == 'u');
+        int codepoint = 0;
+
+        const auto factors = { 12u, 8u, 4u, 0u };
+        for (const auto factor : factors)
+        {
+            get();
+
+            if (current >= '0' && current <= '9')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x30u) << factor);
+            }
+            else if (current >= 'A' && current <= 'F')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x37u) << factor);
+            }
+            else if (current >= 'a' && current <= 'f')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x57u) << factor);
+            }
+            else
+            {
+                return -1;
+            }
+        }
+
+        JSON_ASSERT(0x0000 <= codepoint && codepoint <= 0xFFFF);
+        return codepoint;
+    }
+
+    /*!
+    @brief check if the next byte(s) are inside a given range
+
+    Adds the current byte and, for each passed range, reads a new byte and
+    checks if it is inside the range. If a violation was detected, set up an
+    error message and return false. Otherwise, return true.
+
+    @param[in] ranges  list of integers; interpreted as list of pairs of
+                       inclusive lower and upper bound, respectively
+
+    @pre The passed list @a ranges must have 2, 4, or 6 elements; that is,
+         1, 2, or 3 pairs. This precondition is enforced by an assertion.
+
+    @return true if and only if no range violation was detected
+    */
+    bool next_byte_in_range(std::initializer_list<char_int_type> ranges)
+    {
+        JSON_ASSERT(ranges.size() == 2 || ranges.size() == 4 || ranges.size() == 6);
+        add(current);
+
+        for (auto range = ranges.begin(); range != ranges.end(); ++range)
+        {
+            get();
+            if (JSON_HEDLEY_LIKELY(*range <= current && current <= *(++range))) // NOLINT(bugprone-inc-dec-in-conditions)
+            {
+                add(current);
+            }
+            else
+            {
+                error_message = "invalid string: ill-formed UTF-8 byte";
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief scan a string literal
+
+    This function scans a string according to Sect. 7 of RFC 8259. While
+    scanning, bytes are escaped and copied into buffer token_buffer. Then the
+    function returns successfully, token_buffer is *not* null-terminated (as it
+    may contain \0 bytes), and token_buffer.size() is the number of bytes in the
+    string.
+
+    @return token_type::value_string if string could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note In case of errors, variable error_message contains a textual
+          description.
+    */
+    token_type scan_string()
+    {
+        // reset token_buffer (ignore opening quote)
+        reset();
+
+        // we entered the function by reading an open quote
+        JSON_ASSERT(current == '\"');
+
+        while (true)
+        {
+            // get next character
+            switch (get())
+            {
+                // end of file while parsing string
+                case char_traits<char_type>::eof():
+                {
+                    error_message = "invalid string: missing closing quote";
+                    return token_type::parse_error;
+                }
+
+                // closing quote
+                case '\"':
+                {
+                    return token_type::value_string;
+                }
+
+                // escapes
+                case '\\':
+                {
+                    switch (get())
+                    {
+                        // quotation mark
+                        case '\"':
+                            add('\"');
+                            break;
+                        // reverse solidus
+                        case '\\':
+                            add('\\');
+                            break;
+                        // solidus
+                        case '/':
+                            add('/');
+                            break;
+                        // backspace
+                        case 'b':
+                            add('\b');
+                            break;
+                        // form feed
+                        case 'f':
+                            add('\f');
+                            break;
+                        // line feed
+                        case 'n':
+                            add('\n');
+                            break;
+                        // carriage return
+                        case 'r':
+                            add('\r');
+                            break;
+                        // tab
+                        case 't':
+                            add('\t');
+                            break;
+
+                        // unicode escapes
+                        case 'u':
+                        {
+                            const int codepoint1 = get_codepoint();
+                            int codepoint = codepoint1; // start with codepoint1
+
+                            if (JSON_HEDLEY_UNLIKELY(codepoint1 == -1))
+                            {
+                                error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                return token_type::parse_error;
+                            }
+
+                            // check if code point is a high surrogate
+                            if (0xD800 <= codepoint1 && codepoint1 <= 0xDBFF)
+                            {
+                                // expect next \uxxxx entry
+                                if (JSON_HEDLEY_LIKELY(get() == '\\' && get() == 'u'))
+                                {
+                                    const int codepoint2 = get_codepoint();
+
+                                    if (JSON_HEDLEY_UNLIKELY(codepoint2 == -1))
+                                    {
+                                        error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                        return token_type::parse_error;
+                                    }
+
+                                    // check if codepoint2 is a low surrogate
+                                    if (JSON_HEDLEY_LIKELY(0xDC00 <= codepoint2 && codepoint2 <= 0xDFFF))
+                                    {
+                                        // overwrite codepoint
+                                        codepoint = static_cast<int>(
+                                                        // high surrogate occupies the most significant 22 bits
+                                                        (static_cast<unsigned int>(codepoint1) << 10u)
+                                                        // low surrogate occupies the least significant 15 bits
+                                                        + static_cast<unsigned int>(codepoint2)
+                                                        // there is still the 0xD800, 0xDC00 and 0x10000 noise
+                                                        // in the result, so we have to subtract with:
+                                                        // (0xD800 << 10) + DC00 - 0x10000 = 0x35FDC00
+                                                        - 0x35FDC00u);
+                                    }
+                                    else
+                                    {
+                                        error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                        return token_type::parse_error;
+                                    }
+                                }
+                                else
+                                {
+                                    error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+                            else
+                            {
+                                if (JSON_HEDLEY_UNLIKELY(0xDC00 <= codepoint1 && codepoint1 <= 0xDFFF))
+                                {
+                                    error_message = "invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+
+                            // result of the above calculation yields a proper codepoint
+                            JSON_ASSERT(0x00 <= codepoint && codepoint <= 0x10FFFF);
+
+                            // translate codepoint into bytes
+                            if (codepoint < 0x80)
+                            {
+                                // 1-byte characters: 0xxxxxxx (ASCII)
+                                add(static_cast<char_int_type>(codepoint));
+                            }
+                            else if (codepoint <= 0x7FF)
+                            {
+                                // 2-byte characters: 110xxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xC0u | (static_cast<unsigned int>(codepoint) >> 6u)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else if (codepoint <= 0xFFFF)
+                            {
+                                // 3-byte characters: 1110xxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xE0u | (static_cast<unsigned int>(codepoint) >> 12u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else
+                            {
+                                // 4-byte characters: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xF0u | (static_cast<unsigned int>(codepoint) >> 18u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 12u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+
+                            break;
+                        }
+
+                        // other characters after escape
+                        default:
+                            error_message = "invalid string: forbidden character after backslash";
+                            return token_type::parse_error;
+                    }
+
+                    break;
+                }
+
+                // invalid control characters
+                case 0x00:
+                {
+                    error_message = "invalid string: control character U+0000 (NUL) must be escaped to \\u0000";
+                    return token_type::parse_error;
+                }
+
+                case 0x01:
+                {
+                    error_message = "invalid string: control character U+0001 (SOH) must be escaped to \\u0001";
+                    return token_type::parse_error;
+                }
+
+                case 0x02:
+                {
+                    error_message = "invalid string: control character U+0002 (STX) must be escaped to \\u0002";
+                    return token_type::parse_error;
+                }
+
+                case 0x03:
+                {
+                    error_message = "invalid string: control character U+0003 (ETX) must be escaped to \\u0003";
+                    return token_type::parse_error;
+                }
+
+                case 0x04:
+                {
+                    error_message = "invalid string: control character U+0004 (EOT) must be escaped to \\u0004";
+                    return token_type::parse_error;
+                }
+
+                case 0x05:
+                {
+                    error_message = "invalid string: control character U+0005 (ENQ) must be escaped to \\u0005";
+                    return token_type::parse_error;
+                }
+
+                case 0x06:
+                {
+                    error_message = "invalid string: control character U+0006 (ACK) must be escaped to \\u0006";
+                    return token_type::parse_error;
+                }
+
+                case 0x07:
+                {
+                    error_message = "invalid string: control character U+0007 (BEL) must be escaped to \\u0007";
+                    return token_type::parse_error;
+                }
+
+                case 0x08:
+                {
+                    error_message = "invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b";
+                    return token_type::parse_error;
+                }
+
+                case 0x09:
+                {
+                    error_message = "invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t";
+                    return token_type::parse_error;
+                }
+
+                case 0x0A:
+                {
+                    error_message = "invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n";
+                    return token_type::parse_error;
+                }
+
+                case 0x0B:
+                {
+                    error_message = "invalid string: control character U+000B (VT) must be escaped to \\u000B";
+                    return token_type::parse_error;
+                }
+
+                case 0x0C:
+                {
+                    error_message = "invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f";
+                    return token_type::parse_error;
+                }
+
+                case 0x0D:
+                {
+                    error_message = "invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r";
+                    return token_type::parse_error;
+                }
+
+                case 0x0E:
+                {
+                    error_message = "invalid string: control character U+000E (SO) must be escaped to \\u000E";
+                    return token_type::parse_error;
+                }
+
+                case 0x0F:
+                {
+                    error_message = "invalid string: control character U+000F (SI) must be escaped to \\u000F";
+                    return token_type::parse_error;
+                }
+
+                case 0x10:
+                {
+                    error_message = "invalid string: control character U+0010 (DLE) must be escaped to \\u0010";
+                    return token_type::parse_error;
+                }
+
+                case 0x11:
+                {
+                    error_message = "invalid string: control character U+0011 (DC1) must be escaped to \\u0011";
+                    return token_type::parse_error;
+                }
+
+                case 0x12:
+                {
+                    error_message = "invalid string: control character U+0012 (DC2) must be escaped to \\u0012";
+                    return token_type::parse_error;
+                }
+
+                case 0x13:
+                {
+                    error_message = "invalid string: control character U+0013 (DC3) must be escaped to \\u0013";
+                    return token_type::parse_error;
+                }
+
+                case 0x14:
+                {
+                    error_message = "invalid string: control character U+0014 (DC4) must be escaped to \\u0014";
+                    return token_type::parse_error;
+                }
+
+                case 0x15:
+                {
+                    error_message = "invalid string: control character U+0015 (NAK) must be escaped to \\u0015";
+                    return token_type::parse_error;
+                }
+
+                case 0x16:
+                {
+                    error_message = "invalid string: control character U+0016 (SYN) must be escaped to \\u0016";
+                    return token_type::parse_error;
+                }
+
+                case 0x17:
+                {
+                    error_message = "invalid string: control character U+0017 (ETB) must be escaped to \\u0017";
+                    return token_type::parse_error;
+                }
+
+                case 0x18:
+                {
+                    error_message = "invalid string: control character U+0018 (CAN) must be escaped to \\u0018";
+                    return token_type::parse_error;
+                }
+
+                case 0x19:
+                {
+                    error_message = "invalid string: control character U+0019 (EM) must be escaped to \\u0019";
+                    return token_type::parse_error;
+                }
+
+                case 0x1A:
+                {
+                    error_message = "invalid string: control character U+001A (SUB) must be escaped to \\u001A";
+                    return token_type::parse_error;
+                }
+
+                case 0x1B:
+                {
+                    error_message = "invalid string: control character U+001B (ESC) must be escaped to \\u001B";
+                    return token_type::parse_error;
+                }
+
+                case 0x1C:
+                {
+                    error_message = "invalid string: control character U+001C (FS) must be escaped to \\u001C";
+                    return token_type::parse_error;
+                }
+
+                case 0x1D:
+                {
+                    error_message = "invalid string: control character U+001D (GS) must be escaped to \\u001D";
+                    return token_type::parse_error;
+                }
+
+                case 0x1E:
+                {
+                    error_message = "invalid string: control character U+001E (RS) must be escaped to \\u001E";
+                    return token_type::parse_error;
+                }
+
+                case 0x1F:
+                {
+                    error_message = "invalid string: control character U+001F (US) must be escaped to \\u001F";
+                    return token_type::parse_error;
+                }
+
+                // U+0020..U+007F (except U+0022 (quote) and U+005C (backspace))
+                case 0x20:
+                case 0x21:
+                case 0x23:
+                case 0x24:
+                case 0x25:
+                case 0x26:
+                case 0x27:
+                case 0x28:
+                case 0x29:
+                case 0x2A:
+                case 0x2B:
+                case 0x2C:
+                case 0x2D:
+                case 0x2E:
+                case 0x2F:
+                case 0x30:
+                case 0x31:
+                case 0x32:
+                case 0x33:
+                case 0x34:
+                case 0x35:
+                case 0x36:
+                case 0x37:
+                case 0x38:
+                case 0x39:
+                case 0x3A:
+                case 0x3B:
+                case 0x3C:
+                case 0x3D:
+                case 0x3E:
+                case 0x3F:
+                case 0x40:
+                case 0x41:
+                case 0x42:
+                case 0x43:
+                case 0x44:
+                case 0x45:
+                case 0x46:
+                case 0x47:
+                case 0x48:
+                case 0x49:
+                case 0x4A:
+                case 0x4B:
+                case 0x4C:
+                case 0x4D:
+                case 0x4E:
+                case 0x4F:
+                case 0x50:
+                case 0x51:
+                case 0x52:
+                case 0x53:
+                case 0x54:
+                case 0x55:
+                case 0x56:
+                case 0x57:
+                case 0x58:
+                case 0x59:
+                case 0x5A:
+                case 0x5B:
+                case 0x5D:
+                case 0x5E:
+                case 0x5F:
+                case 0x60:
+                case 0x61:
+                case 0x62:
+                case 0x63:
+                case 0x64:
+                case 0x65:
+                case 0x66:
+                case 0x67:
+                case 0x68:
+                case 0x69:
+                case 0x6A:
+                case 0x6B:
+                case 0x6C:
+                case 0x6D:
+                case 0x6E:
+                case 0x6F:
+                case 0x70:
+                case 0x71:
+                case 0x72:
+                case 0x73:
+                case 0x74:
+                case 0x75:
+                case 0x76:
+                case 0x77:
+                case 0x78:
+                case 0x79:
+                case 0x7A:
+                case 0x7B:
+                case 0x7C:
+                case 0x7D:
+                case 0x7E:
+                case 0x7F:
+                {
+                    add(current);
+                    break;
+                }
+
+                // U+0080..U+07FF: bytes C2..DF 80..BF
+                case 0xC2:
+                case 0xC3:
+                case 0xC4:
+                case 0xC5:
+                case 0xC6:
+                case 0xC7:
+                case 0xC8:
+                case 0xC9:
+                case 0xCA:
+                case 0xCB:
+                case 0xCC:
+                case 0xCD:
+                case 0xCE:
+                case 0xCF:
+                case 0xD0:
+                case 0xD1:
+                case 0xD2:
+                case 0xD3:
+                case 0xD4:
+                case 0xD5:
+                case 0xD6:
+                case 0xD7:
+                case 0xD8:
+                case 0xD9:
+                case 0xDA:
+                case 0xDB:
+                case 0xDC:
+                case 0xDD:
+                case 0xDE:
+                case 0xDF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({0x80, 0xBF})))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+0800..U+0FFF: bytes E0 A0..BF 80..BF
+                case 0xE0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0xA0, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+1000..U+CFFF: bytes E1..EC 80..BF 80..BF
+                // U+E000..U+FFFF: bytes EE..EF 80..BF 80..BF
+                case 0xE1:
+                case 0xE2:
+                case 0xE3:
+                case 0xE4:
+                case 0xE5:
+                case 0xE6:
+                case 0xE7:
+                case 0xE8:
+                case 0xE9:
+                case 0xEA:
+                case 0xEB:
+                case 0xEC:
+                case 0xEE:
+                case 0xEF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+D000..U+D7FF: bytes ED 80..9F 80..BF
+                case 0xED:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x9F, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
+                case 0xF0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
+                case 0xF1:
+                case 0xF2:
+                case 0xF3:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
+                case 0xF4:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // remaining bytes (80..C1 and F5..FF) are ill-formed
+                default:
+                {
+                    error_message = "invalid string: ill-formed UTF-8 byte";
+                    return token_type::parse_error;
+                }
+            }
+        }
+    }
+
+    /*!
+     * @brief scan a comment
+     * @return whether comment could be scanned successfully
+     */
+    bool scan_comment()
+    {
+        switch (get())
+        {
+            // single-line comments skip input until a newline or EOF is read
+            case '/':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case '\n':
+                        case '\r':
+                        case char_traits<char_type>::eof():
+                        case '\0':
+                            return true;
+
+                        default:
+                            break;
+                    }
+                }
+            }
+
+            // multi-line comments skip input until */ is read
+            case '*':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case char_traits<char_type>::eof():
+                        case '\0':
+                        {
+                            error_message = "invalid comment; missing closing '*/'";
+                            return false;
+                        }
+
+                        case '*':
+                        {
+                            switch (get())
+                            {
+                                case '/':
+                                    return true;
+
+                                default:
+                                {
+                                    unget();
+                                    continue;
+                                }
+                            }
+                        }
+
+                        default:
+                            continue;
+                    }
+                }
+            }
+
+            // unexpected character after reading '/'
+            default:
+            {
+                error_message = "invalid comment; expecting '/' or '*' after '/'";
+                return false;
+            }
+        }
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(float& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtof(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtod(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(long double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtold(str, endptr);
+    }
+
+    /*!
+    @brief scan a number literal
+
+    This function scans a string according to Sect. 6 of RFC 8259.
+
+    The function is realized with a deterministic finite state machine derived
+    from the grammar described in RFC 8259. Starting in state "init", the
+    input is read and used to determined the next state. Only state "done"
+    accepts the number. State "error" is a trap state to model errors. In the
+    table below, "anything" means any character but the ones listed before.
+
+    state    | 0        | 1-9      | e E      | +       | -       | .        | anything
+    ---------|----------|----------|----------|---------|---------|----------|-----------
+    init     | zero     | any1     | [error]  | [error] | minus   | [error]  | [error]
+    minus    | zero     | any1     | [error]  | [error] | [error] | [error]  | [error]
+    zero     | done     | done     | exponent | done    | done    | decimal1 | done
+    any1     | any1     | any1     | exponent | done    | done    | decimal1 | done
+    decimal1 | decimal2 | decimal2 | [error]  | [error] | [error] | [error]  | [error]
+    decimal2 | decimal2 | decimal2 | exponent | done    | done    | done     | done
+    exponent | any2     | any2     | [error]  | sign    | sign    | [error]  | [error]
+    sign     | any2     | any2     | [error]  | [error] | [error] | [error]  | [error]
+    any2     | any2     | any2     | done     | done    | done    | done     | done
+
+    The state machine is realized with one label per state (prefixed with
+    "scan_number_") and `goto` statements between them. The state machine
+    contains cycles, but any cycle can be left when EOF is read. Therefore,
+    the function is guaranteed to terminate.
+
+    During scanning, the read bytes are stored in token_buffer. This string is
+    then converted to a signed integer, an unsigned integer, or a
+    floating-point number.
+
+    @return token_type::value_unsigned, token_type::value_integer, or
+            token_type::value_float if number could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note The scanner is independent of the current locale. Internally, the
+          locale's decimal point is used instead of `.` to work with the
+          locale-dependent converters.
+    */
+    token_type scan_number()  // lgtm [cpp/use-of-goto] `goto` is used in this function to implement the number-parsing state machine described above. By design, any finite input will eventually reach the "done" state or return token_type::parse_error. In each intermediate state, 1 byte of the input is appended to the token_buffer vector, and only the already initialized variables token_buffer, number_type, and error_message are manipulated.
+    {
+        // reset token_buffer to store the number's bytes
+        reset();
+
+        // the type of the parsed number; initially set to unsigned; will be
+        // changed if minus sign, decimal point or exponent is read
+        token_type number_type = token_type::value_unsigned;
+
+        // state (init): we just found out we need to scan a number
+        switch (current)
+        {
+            case '-':
+            {
+                add(current);
+                goto scan_number_minus;
+            }
+
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            // all other characters are rejected outside scan_number()
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+scan_number_minus:
+        // state: we just parsed a leading minus sign
+        number_type = token_type::value_integer;
+        switch (get())
+        {
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '-'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_zero:
+        // state: we just parse a zero (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '.':
+            {
+                add(decimal_point_char);
+                decimal_point_position = token_buffer.size() - 1;
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_any1:
+        // state: we just parsed a number 0-9 (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            case '.':
+            {
+                add(decimal_point_char);
+                decimal_point_position = token_buffer.size() - 1;
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_decimal1:
+        // state: we just parsed a decimal point
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '.'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_decimal2:
+        // we just parsed at least one number after a decimal point
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_exponent:
+        // we just parsed an exponent
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '+':
+            case '-':
+            {
+                add(current);
+                goto scan_number_sign;
+            }
+
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message =
+                    "invalid number; expected '+', '-', or digit after exponent";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_sign:
+        // we just parsed an exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after exponent sign";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_any2:
+        // we just parsed a number after the exponent or exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_done:
+        // unget the character after the number (we only read it to know that
+        // we are done scanning a number)
+        unget();
+
+        char* endptr = nullptr; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        errno = 0;
+
+        // try to parse integers first and fall back to floats
+        if (number_type == token_type::value_unsigned)
+        {
+            const auto x = std::strtoull(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno != ERANGE)
+            {
+                value_unsigned = static_cast<number_unsigned_t>(x);
+                if (value_unsigned == x)
+                {
+                    return token_type::value_unsigned;
+                }
+            }
+        }
+        else if (number_type == token_type::value_integer)
+        {
+            const auto x = std::strtoll(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno != ERANGE)
+            {
+                value_integer = static_cast<number_integer_t>(x);
+                if (value_integer == x)
+                {
+                    return token_type::value_integer;
+                }
+            }
+        }
+
+        // this code is reached if we parse a floating-point number or if an
+        // integer conversion above failed
+        strtof(value_float, token_buffer.data(), &endptr);
+
+        // we checked the number format before
+        JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+        return token_type::value_float;
+    }
+
+    /*!
+    @param[in] literal_text  the literal text to expect
+    @param[in] length        the length of the passed literal text
+    @param[in] return_type   the token type to return on success
+    */
+    JSON_HEDLEY_NON_NULL(2)
+    token_type scan_literal(const char_type* literal_text, const std::size_t length,
+                            token_type return_type)
+    {
+        JSON_ASSERT(char_traits<char_type>::to_char_type(current) == literal_text[0]);
+        for (std::size_t i = 1; i < length; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(char_traits<char_type>::to_char_type(get()) != literal_text[i]))
+            {
+                error_message = "invalid literal";
+                return token_type::parse_error;
+            }
+        }
+        return return_type;
+    }
+
+    /////////////////////
+    // input management
+    /////////////////////
+
+    /// reset token_buffer; current character is beginning of token
+    void reset() noexcept
+    {
+        token_buffer.clear();
+        token_string.clear();
+        decimal_point_position = std::string::npos;
+        token_string.push_back(char_traits<char_type>::to_char_type(current));
+    }
+
+    /*
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a
+    `char_traits<char>::eof()` in that case.  Stores the scanned characters
+    for use in error messages.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++position.chars_read_total;
+        ++position.chars_read_current_line;
+
+        if (next_unget)
+        {
+            // just reset the next_unget variable and work with current
+            next_unget = false;
+        }
+        else
+        {
+            current = ia.get_character();
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != char_traits<char_type>::eof()))
+        {
+            token_string.push_back(char_traits<char_type>::to_char_type(current));
+        }
+
+        if (current == '\n')
+        {
+            ++position.lines_read;
+            position.chars_read_current_line = 0;
+        }
+
+        return current;
+    }
+
+    /*!
+    @brief unget current character (read it again on next get)
+
+    We implement unget by setting variable next_unget to true. The input is not
+    changed - we just simulate ungetting by modifying chars_read_total,
+    chars_read_current_line, and token_string. The next call to get() will
+    behave as if the unget character is read again.
+    */
+    void unget()
+    {
+        next_unget = true;
+
+        --position.chars_read_total;
+
+        // in case we "unget" a newline, we have to also decrement the lines_read
+        if (position.chars_read_current_line == 0)
+        {
+            if (position.lines_read > 0)
+            {
+                --position.lines_read;
+            }
+        }
+        else
+        {
+            --position.chars_read_current_line;
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != char_traits<char_type>::eof()))
+        {
+            JSON_ASSERT(!token_string.empty());
+            token_string.pop_back();
+        }
+    }
+
+    /// add a character to token_buffer
+    void add(char_int_type c)
+    {
+        token_buffer.push_back(static_cast<typename string_t::value_type>(c));
+    }
+
+  public:
+    /////////////////////
+    // value getters
+    /////////////////////
+
+    /// return integer value
+    constexpr number_integer_t get_number_integer() const noexcept
+    {
+        return value_integer;
+    }
+
+    /// return unsigned integer value
+    constexpr number_unsigned_t get_number_unsigned() const noexcept
+    {
+        return value_unsigned;
+    }
+
+    /// return floating-point value
+    constexpr number_float_t get_number_float() const noexcept
+    {
+        return value_float;
+    }
+
+    /// return current string value (implicitly resets the token; useful only once)
+    string_t& get_string()
+    {
+        // translate decimal points from locale back to '.' (#4084)
+        if (decimal_point_char != '.' && decimal_point_position != std::string::npos)
+        {
+            token_buffer[decimal_point_position] = '.';
+        }
+        return token_buffer;
+    }
+
+    /////////////////////
+    // diagnostics
+    /////////////////////
+
+    /// return position of last read token
+    constexpr position_t get_position() const noexcept
+    {
+        return position;
+    }
+
+    /// return the last read token (for errors only).  Will never contain EOF
+    /// (an arbitrary value that is not a valid char value, often -1), because
+    /// 255 may legitimately occur.  May contain NUL, which should be escaped.
+    std::string get_token_string() const
+    {
+        // escape control characters
+        std::string result;
+        for (const auto c : token_string)
+        {
+            if (static_cast<unsigned char>(c) <= '\x1F')
+            {
+                // escape control characters
+                std::array<char, 9> cs{{}};
+                static_cast<void>((std::snprintf)(cs.data(), cs.size(), "<U+%.4X>", static_cast<unsigned char>(c))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                result += cs.data();
+            }
+            else
+            {
+                // add character as is
+                result.push_back(static_cast<std::string::value_type>(c));
+            }
+        }
+
+        return result;
+    }
+
+    /// return syntax error message
+    JSON_HEDLEY_RETURNS_NON_NULL
+    constexpr const char* get_error_message() const noexcept
+    {
+        return error_message;
+    }
+
+    /////////////////////
+    // actual scanner
+    /////////////////////
+
+    /*!
+    @brief skip the UTF-8 byte order mark
+    @return true iff there is no BOM or the correct BOM has been skipped
+    */
+    bool skip_bom()
+    {
+        if (get() == 0xEF)
+        {
+            // check if we completely parse the BOM
+            return get() == 0xBB && get() == 0xBF;
+        }
+
+        // the first character is not the beginning of the BOM; unget it to
+        // process is later
+        unget();
+        return true;
+    }
+
+    void skip_whitespace()
+    {
+        do
+        {
+            get();
+        }
+        while (current == ' ' || current == '\t' || current == '\n' || current == '\r');
+    }
+
+    token_type scan()
+    {
+        // initially, skip the BOM
+        if (position.chars_read_total == 0 && !skip_bom())
+        {
+            error_message = "invalid BOM; must be 0xEF 0xBB 0xBF if given";
+            return token_type::parse_error;
+        }
+
+        // read next character and ignore whitespace
+        skip_whitespace();
+
+        // ignore comments
+        while (ignore_comments && current == '/')
+        {
+            if (!scan_comment())
+            {
+                return token_type::parse_error;
+            }
+
+            // skip following whitespace
+            skip_whitespace();
+        }
+
+        switch (current)
+        {
+            // structural characters
+            case '[':
+                return token_type::begin_array;
+            case ']':
+                return token_type::end_array;
+            case '{':
+                return token_type::begin_object;
+            case '}':
+                return token_type::end_object;
+            case ':':
+                return token_type::name_separator;
+            case ',':
+                return token_type::value_separator;
+
+            // literals
+            case 't':
+            {
+                std::array<char_type, 4> true_literal = {{static_cast<char_type>('t'), static_cast<char_type>('r'), static_cast<char_type>('u'), static_cast<char_type>('e')}};
+                return scan_literal(true_literal.data(), true_literal.size(), token_type::literal_true);
+            }
+            case 'f':
+            {
+                std::array<char_type, 5> false_literal = {{static_cast<char_type>('f'), static_cast<char_type>('a'), static_cast<char_type>('l'), static_cast<char_type>('s'), static_cast<char_type>('e')}};
+                return scan_literal(false_literal.data(), false_literal.size(), token_type::literal_false);
+            }
+            case 'n':
+            {
+                std::array<char_type, 4> null_literal = {{static_cast<char_type>('n'), static_cast<char_type>('u'), static_cast<char_type>('l'), static_cast<char_type>('l')}};
+                return scan_literal(null_literal.data(), null_literal.size(), token_type::literal_null);
+            }
+
+            // string
+            case '\"':
+                return scan_string();
+
+            // number
+            case '-':
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+                return scan_number();
+
+            // end of input (the null byte is needed when parsing from
+            // string literals)
+            case '\0':
+            case char_traits<char_type>::eof():
+                return token_type::end_of_input;
+
+            // error
+            default:
+                error_message = "invalid literal";
+                return token_type::parse_error;
+        }
+    }
+
+  private:
+    /// input adapter
+    InputAdapterType ia;
+
+    /// whether comments should be ignored (true) or signaled as errors (false)
+    const bool ignore_comments = false;
+
+    /// the current character
+    char_int_type current = char_traits<char_type>::eof();
+
+    /// whether the next get() call should just return current
+    bool next_unget = false;
+
+    /// the start position of the current token
+    position_t position {};
+
+    /// raw input token string (for error messages)
+    std::vector<char_type> token_string {};
+
+    /// buffer for variable-length tokens (numbers, strings)
+    string_t token_buffer {};
+
+    /// a description of occurred lexer errors
+    const char* error_message = "";
+
+    // number values
+    number_integer_t value_integer = 0;
+    number_unsigned_t value_unsigned = 0;
+    number_float_t value_float = 0;
+
+    /// the decimal point
+    const char_int_type decimal_point_char = '.';
+    /// the position of the decimal point in the input
+    std::size_t decimal_point_position = std::string::npos;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/*!
+@brief SAX interface
+
+This class describes the SAX interface used by @ref nlohmann::json::sax_parse.
+Each function is called in different situations while the input is parsed. The
+boolean return value informs the parser whether to continue processing the
+input.
+*/
+template<typename BasicJsonType>
+struct json_sax
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    /*!
+    @brief a null value was read
+    @return whether parsing should proceed
+    */
+    virtual bool null() = 0;
+
+    /*!
+    @brief a boolean value was read
+    @param[in] val  boolean value
+    @return whether parsing should proceed
+    */
+    virtual bool boolean(bool val) = 0;
+
+    /*!
+    @brief an integer number was read
+    @param[in] val  integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_integer(number_integer_t val) = 0;
+
+    /*!
+    @brief an unsigned integer number was read
+    @param[in] val  unsigned integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_unsigned(number_unsigned_t val) = 0;
+
+    /*!
+    @brief a floating-point number was read
+    @param[in] val  floating-point value
+    @param[in] s    raw token value
+    @return whether parsing should proceed
+    */
+    virtual bool number_float(number_float_t val, const string_t& s) = 0;
+
+    /*!
+    @brief a string value was read
+    @param[in] val  string value
+    @return whether parsing should proceed
+    @note It is safe to move the passed string value.
+    */
+    virtual bool string(string_t& val) = 0;
+
+    /*!
+    @brief a binary value was read
+    @param[in] val  binary value
+    @return whether parsing should proceed
+    @note It is safe to move the passed binary value.
+    */
+    virtual bool binary(binary_t& val) = 0;
+
+    /*!
+    @brief the beginning of an object was read
+    @param[in] elements  number of object elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_object(std::size_t elements) = 0;
+
+    /*!
+    @brief an object key was read
+    @param[in] val  object key
+    @return whether parsing should proceed
+    @note It is safe to move the passed string.
+    */
+    virtual bool key(string_t& val) = 0;
+
+    /*!
+    @brief the end of an object was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_object() = 0;
+
+    /*!
+    @brief the beginning of an array was read
+    @param[in] elements  number of array elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_array(std::size_t elements) = 0;
+
+    /*!
+    @brief the end of an array was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_array() = 0;
+
+    /*!
+    @brief a parse error occurred
+    @param[in] position    the position in the input where the error occurs
+    @param[in] last_token  the last read token
+    @param[in] ex          an exception object describing the error
+    @return whether parsing should proceed (must return false)
+    */
+    virtual bool parse_error(std::size_t position,
+                             const std::string& last_token,
+                             const detail::exception& ex) = 0;
+
+    json_sax() = default;
+    json_sax(const json_sax&) = default;
+    json_sax(json_sax&&) noexcept = default;
+    json_sax& operator=(const json_sax&) = default;
+    json_sax& operator=(json_sax&&) noexcept = default;
+    virtual ~json_sax() = default;
+};
+
+namespace detail
+{
+/*!
+@brief SAX implementation to create a JSON value from SAX events
+
+This class implements the @ref json_sax interface and processes the SAX events
+to create a JSON value which makes it basically a DOM parser. The structure or
+hierarchy of the JSON value is managed by the stack `ref_stack` which contains
+a pointer to the respective array or object for each recursion depth.
+
+After successful parsing, the value that is passed by reference to the
+constructor contains the parsed value.
+
+@tparam BasicJsonType  the JSON type
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class json_sax_dom_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+
+    /*!
+    @param[in,out] r  reference to a JSON value that is manipulated while
+                       parsing
+    @param[in] allow_exceptions_  whether parse errors yield exceptions
+    */
+    explicit json_sax_dom_parser(BasicJsonType& r, const bool allow_exceptions_ = true, lexer_t* lexer_ = nullptr)
+        : root(r), allow_exceptions(allow_exceptions_), m_lexer_ref(lexer_)
+    {}
+
+    // make class move-only
+    json_sax_dom_parser(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser& operator=(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~json_sax_dom_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::object));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        // Manually set the start position of the object here.
+        // Ensure this is after the call to handle_value to ensure correct start position.
+        if (m_lexer_ref)
+        {
+            // Lexer has read the first character of the object, so
+            // subtract 1 from the position to get the correct start position.
+            ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
+        }
+#endif
+
+        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_object());
+
+        // add null at given key and store the reference for later
+        object_element = &(ref_stack.back()->m_data.m_value.object->operator[](val));
+        return true;
+    }
+
+    bool end_object()
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_object());
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        if (m_lexer_ref)
+        {
+            // Lexer's position is past the closing brace, so set that as the end position.
+            ref_stack.back()->end_position = m_lexer_ref->get_position();
+        }
+#endif
+
+        ref_stack.back()->set_parents();
+        ref_stack.pop_back();
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::array));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        // Manually set the start position of the array here.
+        // Ensure this is after the call to handle_value to ensure correct start position.
+        if (m_lexer_ref)
+        {
+            ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
+        }
+#endif
+
+        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_array());
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        if (m_lexer_ref)
+        {
+            // Lexer's position is past the closing bracket, so set that as the end position.
+            ref_stack.back()->end_position = m_lexer_ref->get_position();
+        }
+#endif
+
+        ref_stack.back()->set_parents();
+        ref_stack.pop_back();
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    void handle_diagnostic_positions_for_json_value(BasicJsonType& v)
+    {
+        if (m_lexer_ref)
+        {
+            // Lexer has read past the current field value, so set the end position to the current position.
+            // The start position will be set below based on the length of the string representation
+            // of the value.
+            v.end_position = m_lexer_ref->get_position();
+
+            switch (v.type())
+            {
+                case value_t::boolean:
+                {
+                    // 4 and 5 are the string length of "true" and "false"
+                    v.start_position = v.end_position - (v.m_data.m_value.boolean ? 4 : 5);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    // 4 is the string length of "null"
+                    v.start_position = v.end_position - 4;
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    // include the length of the quotes, which is 2
+                    v.start_position = v.end_position - v.m_data.m_value.string->size() - 2;
+                    break;
+                }
+
+                // As we handle the start and end positions for values created during parsing,
+                // we do not expect the following value type to be called. Regardless, set the positions
+                // in case this is created manually or through a different constructor. Exclude from lcov
+                // since the exact condition of this switch is esoteric.
+                // LCOV_EXCL_START
+                case value_t::discarded:
+                {
+                    v.end_position = std::string::npos;
+                    v.start_position = v.end_position;
+                    break;
+                }
+                // LCOV_EXCL_STOP
+                case value_t::binary:
+                case value_t::number_integer:
+                case value_t::number_unsigned:
+                case value_t::number_float:
+                {
+                    v.start_position = v.end_position - m_lexer_ref->get_string().size();
+                    break;
+                }
+                case value_t::object:
+                case value_t::array:
+                {
+                    // object and array are handled in start_object() and start_array() handlers
+                    // skip setting the values here.
+                    break;
+                }
+                default: // LCOV_EXCL_LINE
+                    // Handle all possible types discretely, default handler should never be reached.
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert,-warnings-as-errors) LCOV_EXCL_LINE
+            }
+        }
+    }
+#endif
+
+    /*!
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+    */
+    template<typename Value>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    BasicJsonType* handle_value(Value&& v)
+    {
+        if (ref_stack.empty())
+        {
+            root = BasicJsonType(std::forward<Value>(v));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+            handle_diagnostic_positions_for_json_value(root);
+#endif
+
+            return &root;
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->emplace_back(std::forward<Value>(v));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+            handle_diagnostic_positions_for_json_value(ref_stack.back()->m_data.m_value.array->back());
+#endif
+
+            return &(ref_stack.back()->m_data.m_value.array->back());
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_object());
+        JSON_ASSERT(object_element);
+        *object_element = BasicJsonType(std::forward<Value>(v));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        handle_diagnostic_positions_for_json_value(*object_element);
+#endif
+
+        return object_element;
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+    /// the lexer reference to obtain the current position
+    lexer_t* m_lexer_ref = nullptr;
+};
+
+template<typename BasicJsonType, typename InputAdapterType>
+class json_sax_dom_callback_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using parser_callback_t = typename BasicJsonType::parser_callback_t;
+    using parse_event_t = typename BasicJsonType::parse_event_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+
+    json_sax_dom_callback_parser(BasicJsonType& r,
+                                 parser_callback_t cb,
+                                 const bool allow_exceptions_ = true,
+                                 lexer_t* lexer_ = nullptr)
+        : root(r), callback(std::move(cb)), allow_exceptions(allow_exceptions_), m_lexer_ref(lexer_)
+    {
+        keep_stack.push_back(true);
+    }
+
+    // make class move-only
+    json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~json_sax_dom_callback_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        // check callback for object start
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::object_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::object, true);
+        ref_stack.push_back(val.second);
+
+        if (ref_stack.back())
+        {
+
+#if JSON_DIAGNOSTIC_POSITIONS
+            // Manually set the start position of the object here.
+            // Ensure this is after the call to handle_value to ensure correct start position.
+            if (m_lexer_ref)
+            {
+                // Lexer has read the first character of the object, so
+                // subtract 1 from the position to get the correct start position.
+                ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
+            }
+#endif
+
+            // check object limit
+            if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+            {
+                JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
+            }
+        }
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        BasicJsonType k = BasicJsonType(val);
+
+        // check callback for key
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::key, k);
+        key_keep_stack.push_back(keep);
+
+        // add discarded value at given key and store the reference for later
+        if (keep && ref_stack.back())
+        {
+            object_element = &(ref_stack.back()->m_data.m_value.object->operator[](val) = discarded);
+        }
+
+        return true;
+    }
+
+    bool end_object()
+    {
+        if (ref_stack.back())
+        {
+            if (!callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::object_end, *ref_stack.back()))
+            {
+                // discard object
+                *ref_stack.back() = discarded;
+
+#if JSON_DIAGNOSTIC_POSITIONS
+                // Set start/end positions for discarded object.
+                handle_diagnostic_positions_for_json_value(*ref_stack.back());
+#endif
+            }
+            else
+            {
+
+#if JSON_DIAGNOSTIC_POSITIONS
+                if (m_lexer_ref)
+                {
+                    // Lexer's position is past the closing brace, so set that as the end position.
+                    ref_stack.back()->end_position = m_lexer_ref->get_position();
+                }
+#endif
+
+                ref_stack.back()->set_parents();
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_structured())
+        {
+            // remove discarded value
+            for (auto it = ref_stack.back()->begin(); it != ref_stack.back()->end(); ++it)
+            {
+                if (it->is_discarded())
+                {
+                    ref_stack.back()->erase(it);
+                    break;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::array_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::array, true);
+        ref_stack.push_back(val.second);
+
+        if (ref_stack.back())
+        {
+
+#if JSON_DIAGNOSTIC_POSITIONS
+            // Manually set the start position of the array here.
+            // Ensure this is after the call to handle_value to ensure correct start position.
+            if (m_lexer_ref)
+            {
+                // Lexer has read the first character of the array, so
+                // subtract 1 from the position to get the correct start position.
+                ref_stack.back()->start_position = m_lexer_ref->get_position() - 1;
+            }
+#endif
+
+            // check array limit
+            if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+            {
+                JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
+            }
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        bool keep = true;
+
+        if (ref_stack.back())
+        {
+            keep = callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::array_end, *ref_stack.back());
+            if (keep)
+            {
+
+#if JSON_DIAGNOSTIC_POSITIONS
+                if (m_lexer_ref)
+                {
+                    // Lexer's position is past the closing bracket, so set that as the end position.
+                    ref_stack.back()->end_position = m_lexer_ref->get_position();
+                }
+#endif
+
+                ref_stack.back()->set_parents();
+            }
+            else
+            {
+                // discard array
+                *ref_stack.back() = discarded;
+
+#if JSON_DIAGNOSTIC_POSITIONS
+                // Set start/end positions for discarded array.
+                handle_diagnostic_positions_for_json_value(*ref_stack.back());
+#endif
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        // remove discarded value
+        if (!keep && !ref_stack.empty() && ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->pop_back();
+        }
+
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    void handle_diagnostic_positions_for_json_value(BasicJsonType& v)
+    {
+        if (m_lexer_ref)
+        {
+            // Lexer has read past the current field value, so set the end position to the current position.
+            // The start position will be set below based on the length of the string representation
+            // of the value.
+            v.end_position = m_lexer_ref->get_position();
+
+            switch (v.type())
+            {
+                case value_t::boolean:
+                {
+                    // 4 and 5 are the string length of "true" and "false"
+                    v.start_position = v.end_position - (v.m_data.m_value.boolean ? 4 : 5);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    // 4 is the string length of "null"
+                    v.start_position = v.end_position - 4;
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    // include the length of the quotes, which is 2
+                    v.start_position = v.end_position - v.m_data.m_value.string->size() - 2;
+                    break;
+                }
+
+                case value_t::discarded:
+                {
+                    v.end_position = std::string::npos;
+                    v.start_position = v.end_position;
+                    break;
+                }
+
+                case value_t::binary:
+                case value_t::number_integer:
+                case value_t::number_unsigned:
+                case value_t::number_float:
+                {
+                    v.start_position = v.end_position - m_lexer_ref->get_string().size();
+                    break;
+                }
+
+                case value_t::object:
+                case value_t::array:
+                {
+                    // object and array are handled in start_object() and start_array() handlers
+                    // skip setting the values here.
+                    break;
+                }
+                default: // LCOV_EXCL_LINE
+                    // Handle all possible types discretely, default handler should never be reached.
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert,-warnings-as-errors) LCOV_EXCL_LINE
+            }
+        }
+    }
+#endif
+
+    /*!
+    @param[in] v  value to add to the JSON value we build during parsing
+    @param[in] skip_callback  whether we should skip calling the callback
+               function; this is required after start_array() and
+               start_object() SAX events, because otherwise we would call the
+               callback function with an empty array or object, respectively.
+
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+
+    @return pair of boolean (whether value should be kept) and pointer (to the
+            passed value in the ref_stack hierarchy; nullptr if not kept)
+    */
+    template<typename Value>
+    std::pair<bool, BasicJsonType*> handle_value(Value&& v, const bool skip_callback = false)
+    {
+        JSON_ASSERT(!keep_stack.empty());
+
+        // do not handle this value if we know it would be added to a discarded
+        // container
+        if (!keep_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // create value
+        auto value = BasicJsonType(std::forward<Value>(v));
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        handle_diagnostic_positions_for_json_value(value);
+#endif
+
+        // check callback
+        const bool keep = skip_callback || callback(static_cast<int>(ref_stack.size()), parse_event_t::value, value);
+
+        // do not handle this value if we just learnt it shall be discarded
+        if (!keep)
+        {
+            return {false, nullptr};
+        }
+
+        if (ref_stack.empty())
+        {
+            root = std::move(value);
+            return {true, & root};
+        }
+
+        // skip this value if we already decided to skip the parent
+        // (https://github.com/nlohmann/json/issues/971#issuecomment-413678360)
+        if (!ref_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // we now only expect arrays and objects
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        // array
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->emplace_back(std::move(value));
+            return {true, & (ref_stack.back()->m_data.m_value.array->back())};
+        }
+
+        // object
+        JSON_ASSERT(ref_stack.back()->is_object());
+        // check if we should store an element for the current key
+        JSON_ASSERT(!key_keep_stack.empty());
+        const bool store_element = key_keep_stack.back();
+        key_keep_stack.pop_back();
+
+        if (!store_element)
+        {
+            return {false, nullptr};
+        }
+
+        JSON_ASSERT(object_element);
+        *object_element = std::move(value);
+        return {true, object_element};
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// stack to manage which values to keep
+    std::vector<bool> keep_stack {}; // NOLINT(readability-redundant-member-init)
+    /// stack to manage which object keys to keep
+    std::vector<bool> key_keep_stack {}; // NOLINT(readability-redundant-member-init)
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// callback function
+    const parser_callback_t callback = nullptr;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+    /// a discarded value for the callback
+    BasicJsonType discarded = BasicJsonType::value_t::discarded;
+    /// the lexer reference to obtain the current position
+    lexer_t* m_lexer_ref = nullptr;
+};
+
+template<typename BasicJsonType>
+class json_sax_acceptor
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    bool null()
+    {
+        return true;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_integer(number_integer_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_float(number_float_t /*unused*/, const string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool string(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool binary(binary_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool start_object(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
+    {
+        return true;
+    }
+
+    bool key(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool end_object()
+    {
+        return true;
+    }
+
+    bool start_array(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
+    {
+        return true;
+    }
+
+    bool end_array()
+    {
+        return true;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const detail::exception& /*unused*/)
+    {
+        return false;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/is_sax.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstdint> // size_t
+#include <utility> // declval
+#include <string> // string
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename T>
+using null_function_t = decltype(std::declval<T&>().null());
+
+template<typename T>
+using boolean_function_t =
+    decltype(std::declval<T&>().boolean(std::declval<bool>()));
+
+template<typename T, typename Integer>
+using number_integer_function_t =
+    decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
+
+template<typename T, typename Unsigned>
+using number_unsigned_function_t =
+    decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
+
+template<typename T, typename Float, typename String>
+using number_float_function_t = decltype(std::declval<T&>().number_float(
+                                    std::declval<Float>(), std::declval<const String&>()));
+
+template<typename T, typename String>
+using string_function_t =
+    decltype(std::declval<T&>().string(std::declval<String&>()));
+
+template<typename T, typename Binary>
+using binary_function_t =
+    decltype(std::declval<T&>().binary(std::declval<Binary&>()));
+
+template<typename T>
+using start_object_function_t =
+    decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
+
+template<typename T, typename String>
+using key_function_t =
+    decltype(std::declval<T&>().key(std::declval<String&>()));
+
+template<typename T>
+using end_object_function_t = decltype(std::declval<T&>().end_object());
+
+template<typename T>
+using start_array_function_t =
+    decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
+
+template<typename T>
+using end_array_function_t = decltype(std::declval<T&>().end_array());
+
+template<typename T, typename Exception>
+using parse_error_function_t = decltype(std::declval<T&>().parse_error(
+        std::declval<std::size_t>(), std::declval<const std::string&>(),
+        std::declval<const Exception&>()));
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static constexpr bool value =
+        is_detected_exact<bool, null_function_t, SAX>::value &&
+        is_detected_exact<bool, boolean_function_t, SAX>::value &&
+        is_detected_exact<bool, number_integer_function_t, SAX, number_integer_t>::value &&
+        is_detected_exact<bool, number_unsigned_function_t, SAX, number_unsigned_t>::value &&
+        is_detected_exact<bool, number_float_function_t, SAX, number_float_t, string_t>::value &&
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value &&
+        is_detected_exact<bool, start_object_function_t, SAX>::value &&
+        is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, end_object_function_t, SAX>::value &&
+        is_detected_exact<bool, start_array_function_t, SAX>::value &&
+        is_detected_exact<bool, end_array_function_t, SAX>::value &&
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
+};
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax_static_asserts
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static_assert(is_detected_exact<bool, null_function_t, SAX>::value,
+                  "Missing/invalid function: bool null()");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(
+        is_detected_exact<bool, number_integer_function_t, SAX,
+        number_integer_t>::value,
+        "Missing/invalid function: bool number_integer(number_integer_t)");
+    static_assert(
+        is_detected_exact<bool, number_unsigned_function_t, SAX,
+        number_unsigned_t>::value,
+        "Missing/invalid function: bool number_unsigned(number_unsigned_t)");
+    static_assert(is_detected_exact<bool, number_float_function_t, SAX,
+                  number_float_t, string_t>::value,
+                  "Missing/invalid function: bool number_float(number_float_t, const string_t&)");
+    static_assert(
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value,
+        "Missing/invalid function: bool string(string_t&)");
+    static_assert(
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value,
+        "Missing/invalid function: bool binary(binary_t&)");
+    static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_object(std::size_t)");
+    static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value,
+                  "Missing/invalid function: bool key(string_t&)");
+    static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_object()");
+    static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_array(std::size_t)");
+    static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_array()");
+    static_assert(
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
+        "Missing/invalid function: bool parse_error(std::size_t, const "
+        "std::string&, const exception&)");
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// how to treat CBOR tags
+enum class cbor_tag_handler_t
+{
+    error,   ///< throw a parse_error exception in case of a tag
+    ignore,  ///< ignore tags
+    store    ///< store tags as binary type
+};
+
+/*!
+@brief determine system byte order
+
+@return true if and only if system's byte order is little endian
+
+@note from https://stackoverflow.com/a/1001328/266378
+*/
+static inline bool little_endianness(int num = 1) noexcept
+{
+    return *reinterpret_cast<char*>(&num) == 1;
+}
+
+///////////////////
+// binary reader //
+///////////////////
+
+/*!
+@brief deserialization of CBOR, MessagePack, and UBJSON values
+*/
+template<typename BasicJsonType, typename InputAdapterType, typename SAX = json_sax_dom_parser<BasicJsonType, InputAdapterType>>
+class binary_reader
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using json_sax_t = SAX;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename char_traits<char_type>::int_type;
+
+  public:
+    /*!
+    @brief create a binary reader
+
+    @param[in] adapter  input adapter to read from
+    */
+    explicit binary_reader(InputAdapterType&& adapter, const input_format_t format = input_format_t::json) noexcept : ia(std::move(adapter)), input_format(format)
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+    }
+
+    // make class move-only
+    binary_reader(const binary_reader&) = delete;
+    binary_reader(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    binary_reader& operator=(const binary_reader&) = delete;
+    binary_reader& operator=(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~binary_reader() = default;
+
+    /*!
+    @param[in] format  the binary format to parse
+    @param[in] sax_    a SAX event processor
+    @param[in] strict  whether to expect the input to be consumed completed
+    @param[in] tag_handler  how to treat CBOR tags
+
+    @return whether parsing was successful
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool sax_parse(const input_format_t format,
+                   json_sax_t* sax_,
+                   const bool strict = true,
+                   const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        sax = sax_;
+        bool result = false;
+
+        switch (format)
+        {
+            case input_format_t::bson:
+                result = parse_bson_internal();
+                break;
+
+            case input_format_t::cbor:
+                result = parse_cbor_internal(true, tag_handler);
+                break;
+
+            case input_format_t::msgpack:
+                result = parse_msgpack_internal();
+                break;
+
+            case input_format_t::ubjson:
+            case input_format_t::bjdata:
+                result = parse_ubjson_internal();
+                break;
+
+            case input_format_t::json: // LCOV_EXCL_LINE
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+        // strict mode: next byte must be EOF
+        if (result && strict)
+        {
+            if (input_format == input_format_t::ubjson || input_format == input_format_t::bjdata)
+            {
+                get_ignore_noop();
+            }
+            else
+            {
+                get();
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(current != char_traits<char_type>::eof()))
+            {
+                return sax->parse_error(chars_read, get_token_string(), parse_error::create(110, chars_read,
+                                        exception_message(input_format, concat("expected end of input; last byte: 0x", get_token_string()), "value"), nullptr));
+            }
+        }
+
+        return result;
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @brief Reads in a BSON-object and passes it to the SAX-parser.
+    @return whether a valid BSON-value was passed to the SAX parser
+    */
+    bool parse_bson_internal()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/false)))
+        {
+            return false;
+        }
+
+        return sax->end_object();
+    }
+
+    /*!
+    @brief Parses a C-style string from the BSON input.
+    @param[in,out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @return `true` if the \x00-byte indicating the end of the string was
+             encountered before the EOF; false` indicates an unexpected EOF.
+    */
+    bool get_bson_cstr(string_t& result)
+    {
+        auto out = std::back_inserter(result);
+        while (true)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "cstring")))
+            {
+                return false;
+            }
+            if (current == 0x00)
+            {
+                return true;
+            }
+            *out++ = static_cast<typename string_t::value_type>(current);
+        }
+    }
+
+    /*!
+    @brief Parses a zero-terminated string of length @a len from the BSON
+           input.
+    @param[in] len  The length (including the zero-byte at the end) of the
+                    string to be read.
+    @param[in,out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 1
+    @return `true` if the string was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_string(const NumberType len, string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 1))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format_t::bson, concat("string length must be at least 1, is ", std::to_string(len)), "string"), nullptr));
+        }
+
+        return get_string(input_format_t::bson, len - static_cast<NumberType>(1), result) && get() != char_traits<char_type>::eof();
+    }
+
+    /*!
+    @brief Parses a byte array input of length @a len from the BSON input.
+    @param[in] len  The length of the byte array to be read.
+    @param[in,out] result  A reference to the binary variable where the read
+                            array is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 0
+    @return `true` if the byte array was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_binary(const NumberType len, binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 0))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format_t::bson, concat("byte array length cannot be negative, is ", std::to_string(len)), "binary"), nullptr));
+        }
+
+        // All BSON binary values have a subtype
+        std::uint8_t subtype{};
+        get_number<std::uint8_t>(input_format_t::bson, subtype);
+        result.set_subtype(subtype);
+
+        return get_binary(input_format_t::bson, len, result);
+    }
+
+    /*!
+    @brief Read a BSON document element of the given @a element_type.
+    @param[in] element_type The BSON element type, c.f. http://bsonspec.org/spec.html
+    @param[in] element_type_parse_position The position in the input stream,
+               where the `element_type` was read.
+    @warning Not all BSON element types are supported yet. An unsupported
+             @a element_type will give rise to a parse_error.114:
+             Unsupported BSON record type 0x...
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_internal(const char_int_type element_type,
+                                     const std::size_t element_type_parse_position)
+    {
+        switch (element_type)
+        {
+            case 0x01: // double
+            {
+                double number{};
+                return get_number<double, true>(input_format_t::bson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0x02: // string
+            {
+                std::int32_t len{};
+                string_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_string(len, value) && sax->string(value);
+            }
+
+            case 0x03: // object
+            {
+                return parse_bson_internal();
+            }
+
+            case 0x04: // array
+            {
+                return parse_bson_array();
+            }
+
+            case 0x05: // binary
+            {
+                std::int32_t len{};
+                binary_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_binary(len, value) && sax->binary(value);
+            }
+
+            case 0x08: // boolean
+            {
+                return sax->boolean(get() != 0);
+            }
+
+            case 0x0A: // null
+            {
+                return sax->null();
+            }
+
+            case 0x10: // int32
+            {
+                std::int32_t value{};
+                return get_number<std::int32_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            case 0x12: // int64
+            {
+                std::int64_t value{};
+                return get_number<std::int64_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            default: // anything else not supported (yet)
+            {
+                std::array<char, 3> cr{{}};
+                static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                const std::string cr_str{cr.data()};
+                return sax->parse_error(element_type_parse_position, cr_str,
+                                        parse_error::create(114, element_type_parse_position, concat("Unsupported BSON record type 0x", cr_str), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief Read a BSON element list (as specified in the BSON-spec)
+
+    The same binary layout is used for objects and arrays, hence it must be
+    indicated with the argument @a is_array which one is expected
+    (true --> array, false --> object).
+
+    @param[in] is_array Determines if the element list being read is to be
+                        treated as an object (@a is_array == false), or as an
+                        array (@a is_array == true).
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_list(const bool is_array)
+    {
+        string_t key;
+
+        while (auto element_type = get())
+        {
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "element list")))
+            {
+                return false;
+            }
+
+            const std::size_t element_type_parse_position = chars_read;
+            if (JSON_HEDLEY_UNLIKELY(!get_bson_cstr(key)))
+            {
+                return false;
+            }
+
+            if (!is_array && !sax->key(key))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_internal(element_type, element_type_parse_position)))
+            {
+                return false;
+            }
+
+            // get_bson_cstr only appends
+            key.clear();
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief Reads an array from the BSON input and passes it to the SAX-parser.
+    @return whether a valid BSON-array was passed to the SAX parser
+    */
+    bool parse_bson_array()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/true)))
+        {
+            return false;
+        }
+
+        return sax->end_array();
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true) or whether the last read character should
+                         be considered instead (false)
+    @param[in] tag_handler how CBOR tags should be treated
+
+    @return whether a valid CBOR value was passed to the SAX parser
+    */
+    bool parse_cbor_internal(const bool get_char,
+                             const cbor_tag_handler_t tag_handler)
+    {
+        switch (get_char ? get() : current)
+        {
+            // EOF
+            case char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::cbor, "value");
+
+            // Integer 0x00..0x17 (0..23)
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            case 0x18: // Unsigned integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x19: // Unsigned integer (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1A: // Unsigned integer (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1B: // Unsigned integer (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            // Negative integer -1-0x00..-1-0x17 (-1..-24)
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+                return sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - current));
+
+            case 0x38: // Negative integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3A: // Negative integer -1-n (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3B: // Negative integer -1-n (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
+                        - static_cast<number_integer_t>(number));
+            }
+
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            case 0x5F: // Binary data (indefinite length)
+            {
+                binary_t b;
+                return get_cbor_binary(b) && sax->binary(b);
+            }
+
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                string_t s;
+                return get_cbor_string(s) && sax->string(s);
+            }
+
+            // array (0x00..0x17 data items follow)
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+                return get_cbor_array(
+                           conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0x98: // array (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x99: // array (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9A: // array (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9B: // array (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9F: // array (indefinite length)
+                return get_cbor_array(static_cast<std::size_t>(-1), tag_handler);
+
+            // map (0x00..0x17 pairs of data items follow)
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+                return get_cbor_object(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0xB8: // map (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xB9: // map (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBA: // map (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBB: // map (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBF: // map (indefinite length)
+                return get_cbor_object(static_cast<std::size_t>(-1), tag_handler);
+
+            case 0xC6: // tagged item
+            case 0xC7:
+            case 0xC8:
+            case 0xC9:
+            case 0xCA:
+            case 0xCB:
+            case 0xCC:
+            case 0xCD:
+            case 0xCE:
+            case 0xCF:
+            case 0xD0:
+            case 0xD1:
+            case 0xD2:
+            case 0xD3:
+            case 0xD4:
+            case 0xD8: // tagged item (1 bytes follow)
+            case 0xD9: // tagged item (2 bytes follow)
+            case 0xDA: // tagged item (4 bytes follow)
+            case 0xDB: // tagged item (8 bytes follow)
+            {
+                switch (tag_handler)
+                {
+                    case cbor_tag_handler_t::error:
+                    {
+                        auto last_token = get_token_string();
+                        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                                exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
+                    }
+
+                    case cbor_tag_handler_t::ignore:
+                    {
+                        // ignore binary subtype
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            default:
+                                break;
+                        }
+                        return parse_cbor_internal(true, tag_handler);
+                    }
+
+                    case cbor_tag_handler_t::store:
+                    {
+                        binary_t b;
+                        // use binary subtype and store in binary container
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            default:
+                                return parse_cbor_internal(true, tag_handler);
+                        }
+                        get();
+                        return get_cbor_binary(b) && sax->binary(b);
+                    }
+
+                    default:                 // LCOV_EXCL_LINE
+                        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+                        return false;        // LCOV_EXCL_LINE
+                }
+            }
+
+            case 0xF4: // false
+                return sax->boolean(false);
+
+            case 0xF5: // true
+                return sax->boolean(true);
+
+            case 0xF6: // null
+                return sax->null();
+
+            case 0xF9: // Half-Precision Float (two-byte IEEE 754)
+            {
+                const auto byte1_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+                const auto byte2_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+
+                const auto byte1 = static_cast<unsigned char>(byte1_raw);
+                const auto byte2 = static_cast<unsigned char>(byte2_raw);
+
+                // code from RFC 7049, Appendix D, Figure 3:
+                // As half-precision floating-point numbers were only added
+                // to IEEE 754 in 2008, today's programming platforms often
+                // still only have limited support for them. It is very
+                // easy to include at least decoding support for them even
+                // without such support. An example of a small decoder for
+                // half-precision floating-point numbers in the C language
+                // is shown in Fig. 3.
+                const auto half = static_cast<unsigned int>((byte1 << 8u) + byte2);
+                const double val = [&half]
+                {
+                    const int exp = (half >> 10u) & 0x1Fu;
+                    const unsigned int mant = half & 0x3FFu;
+                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(mant <= 1024);
+                    switch (exp)
+                    {
+                        case 0:
+                            return std::ldexp(mant, -24);
+                        case 31:
+                            return (mant == 0)
+                            ? std::numeric_limits<double>::infinity()
+                            : std::numeric_limits<double>::quiet_NaN();
+                        default:
+                            return std::ldexp(mant + 1024, exp - 25);
+                    }
+                }();
+                return sax->number_float((half & 0x8000u) != 0
+                                         ? static_cast<number_float_t>(-val)
+                                         : static_cast<number_float_t>(val), "");
+            }
+
+            case 0xFA: // Single-Precision Float (four-byte IEEE 754)
+            {
+                float number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xFB: // Double-Precision Float (eight-byte IEEE 754)
+            {
+                double number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            default: // anything else (0xFF is handled inside the other types)
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+    Additionally, CBOR's strings with indefinite lengths are supported.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_cbor_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            {
+                return get_string(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    string_t chunk;
+                    if (!get_cbor_string(chunk))
+                    {
+                        return false;
+                    }
+                    result.append(chunk);
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::cbor, concat("expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x", last_token), "string"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into the byte array.
+    Additionally, CBOR's byte arrays with indefinite lengths are supported.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_cbor_binary(binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "binary")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            {
+                return get_binary(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5F: // Binary data (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    binary_t chunk;
+                    if (!get_cbor_binary(chunk))
+                    {
+                        return false;
+                    }
+                    result.insert(result.end(), chunk.begin(), chunk.end());
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::cbor, concat("expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x", last_token), "binary"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array or static_cast<std::size_t>(-1) for an
+                    array of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether array creation completed
+    */
+    bool get_cbor_array(const std::size_t len,
+                        const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        if (len != static_cast<std::size_t>(-1))
+        {
+            for (std::size_t i = 0; i < len; ++i)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+        else
+        {
+            while (get() != 0xFF)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(false, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object or static_cast<std::size_t>(-1) for an
+                    object of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether object creation completed
+    */
+    bool get_cbor_object(const std::size_t len,
+                         const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        if (len != 0)
+        {
+            string_t key;
+            if (len != static_cast<std::size_t>(-1))
+            {
+                for (std::size_t i = 0; i < len; ++i)
+                {
+                    get();
+                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                while (get() != 0xFF)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    /*!
+    @return whether a valid MessagePack value was passed to the SAX parser
+    */
+    bool parse_msgpack_internal()
+    {
+        switch (get())
+        {
+            // EOF
+            case char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::msgpack, "value");
+
+            // positive fixint
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+            case 0x18:
+            case 0x19:
+            case 0x1A:
+            case 0x1B:
+            case 0x1C:
+            case 0x1D:
+            case 0x1E:
+            case 0x1F:
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+            case 0x38:
+            case 0x39:
+            case 0x3A:
+            case 0x3B:
+            case 0x3C:
+            case 0x3D:
+            case 0x3E:
+            case 0x3F:
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58:
+            case 0x59:
+            case 0x5A:
+            case 0x5B:
+            case 0x5C:
+            case 0x5D:
+            case 0x5E:
+            case 0x5F:
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78:
+            case 0x79:
+            case 0x7A:
+            case 0x7B:
+            case 0x7C:
+            case 0x7D:
+            case 0x7E:
+            case 0x7F:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            // fixmap
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+                return get_msgpack_object(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixarray
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+            case 0x98:
+            case 0x99:
+            case 0x9A:
+            case 0x9B:
+            case 0x9C:
+            case 0x9D:
+            case 0x9E:
+            case 0x9F:
+                return get_msgpack_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            case 0xD9: // str 8
+            case 0xDA: // str 16
+            case 0xDB: // str 32
+            {
+                string_t s;
+                return get_msgpack_string(s) && sax->string(s);
+            }
+
+            case 0xC0: // nil
+                return sax->null();
+
+            case 0xC2: // false
+                return sax->boolean(false);
+
+            case 0xC3: // true
+                return sax->boolean(true);
+
+            case 0xC4: // bin 8
+            case 0xC5: // bin 16
+            case 0xC6: // bin 32
+            case 0xC7: // ext 8
+            case 0xC8: // ext 16
+            case 0xC9: // ext 32
+            case 0xD4: // fixext 1
+            case 0xD5: // fixext 2
+            case 0xD6: // fixext 4
+            case 0xD7: // fixext 8
+            case 0xD8: // fixext 16
+            {
+                binary_t b;
+                return get_msgpack_binary(b) && sax->binary(b);
+            }
+
+            case 0xCA: // float 32
+            {
+                float number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCB: // float 64
+            {
+                double number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCC: // uint 8
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCD: // uint 16
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCE: // uint 32
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCF: // uint 64
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xD0: // int 8
+            {
+                std::int8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD1: // int 16
+            {
+                std::int16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD2: // int 32
+            {
+                std::int32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD3: // int 64
+            {
+                std::int64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xDC: // array 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(static_cast<std::size_t>(len));
+            }
+
+            case 0xDD: // array 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(conditional_static_cast<std::size_t>(len));
+            }
+
+            case 0xDE: // map 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(static_cast<std::size_t>(len));
+            }
+
+            case 0xDF: // map 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(conditional_static_cast<std::size_t>(len));
+            }
+
+            // negative fixint
+            case 0xE0:
+            case 0xE1:
+            case 0xE2:
+            case 0xE3:
+            case 0xE4:
+            case 0xE5:
+            case 0xE6:
+            case 0xE7:
+            case 0xE8:
+            case 0xE9:
+            case 0xEA:
+            case 0xEB:
+            case 0xEC:
+            case 0xED:
+            case 0xEE:
+            case 0xEF:
+            case 0xF0:
+            case 0xF1:
+            case 0xF2:
+            case 0xF3:
+            case 0xF4:
+            case 0xF5:
+            case 0xF6:
+            case 0xF7:
+            case 0xF8:
+            case 0xF9:
+            case 0xFA:
+            case 0xFB:
+            case 0xFC:
+            case 0xFD:
+            case 0xFE:
+            case 0xFF:
+                return sax->number_integer(static_cast<std::int8_t>(current));
+
+            default: // anything else
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format_t::msgpack, concat("invalid byte: 0x", last_token), "value"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_msgpack_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::msgpack, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            {
+                return get_string(input_format_t::msgpack, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0xD9: // str 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDA: // str 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDB: // str 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::msgpack, concat("expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x", last_token), "string"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into a byte array.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_msgpack_binary(binary_t& result)
+    {
+        // helper function to set the subtype
+        auto assign_and_return_true = [&result](std::int8_t subtype)
+        {
+            result.set_subtype(static_cast<std::uint8_t>(subtype));
+            return true;
+        };
+
+        switch (current)
+        {
+            case 0xC4: // bin 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC5: // bin 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC6: // bin 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC7: // ext 8
+            {
+                std::uint8_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC8: // ext 16
+            {
+                std::uint16_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC9: // ext 32
+            {
+                std::uint32_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD4: // fixext 1
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 1, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD5: // fixext 2
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 2, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD6: // fixext 4
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 4, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD7: // fixext 8
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 8, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD8: // fixext 16
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 16, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            default:           // LCOV_EXCL_LINE
+                return false;  // LCOV_EXCL_LINE
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array
+    @return whether array creation completed
+    */
+    bool get_msgpack_array(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object
+    @return whether object creation completed
+    */
+    bool get_msgpack_object(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        string_t key;
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!get_msgpack_string(key) || !sax->key(key)))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+            key.clear();
+        }
+
+        return sax->end_object();
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether a valid UBJSON value was passed to the SAX parser
+    */
+    bool parse_ubjson_internal(const bool get_char = true)
+    {
+        return get_ubjson_value(get_char ? get_ignore_noop() : current);
+    }
+
+    /*!
+    @brief reads a UBJSON string
+
+    This function is either called after reading the 'S' byte explicitly
+    indicating a string, or in case of an object key where the 'S' byte can be
+    left out.
+
+    @param[out] result   created string
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether string creation completed
+    */
+    bool get_ubjson_string(string_t& result, const bool get_char = true)
+    {
+        if (get_char)
+        {
+            get();  // TODO(niels): may we ignore N here?
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "value")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            case 'U':
+            {
+                std::uint8_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'i':
+            {
+                std::int8_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'I':
+            {
+                std::int16_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'l':
+            {
+                std::int32_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'L':
+            {
+                std::int64_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            default:
+                break;
+        }
+        auto last_token = get_token_string();
+        std::string message;
+
+        if (input_format != input_format_t::bjdata)
+        {
+            message = "expected length type specification (U, i, I, l, L); last byte: 0x" + last_token;
+        }
+        else
+        {
+            message = "expected length type specification (U, i, u, I, m, l, M, L); last byte: 0x" + last_token;
+        }
+        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format, message, "string"), nullptr));
+    }
+
+    /*!
+    @param[out] dim  an integer vector storing the ND array dimensions
+    @return whether reading ND array size vector is successful
+    */
+    bool get_ubjson_ndarray_size(std::vector<size_t>& dim)
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        size_t dimlen = 0;
+        bool no_ndarray = true;
+
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type, no_ndarray)))
+        {
+            return false;
+        }
+
+        if (size_and_type.first != npos)
+        {
+            if (size_and_type.second != 0)
+            {
+                if (size_and_type.second != 'N')
+                {
+                    for (std::size_t i = 0; i < size_and_type.first; ++i)
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray, size_and_type.second)))
+                        {
+                            return false;
+                        }
+                        dim.push_back(dimlen);
+                    }
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray)))
+                    {
+                        return false;
+                    }
+                    dim.push_back(dimlen);
+                }
+            }
+        }
+        else
+        {
+            while (current != ']')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray, current)))
+                {
+                    return false;
+                }
+                dim.push_back(dimlen);
+                get_ignore_noop();
+            }
+        }
+        return true;
+    }
+
+    /*!
+    @param[out] result  determined size
+    @param[in,out] is_ndarray  for input, `true` means already inside an ndarray vector
+                               or ndarray dimension is not allowed; `false` means ndarray
+                               is allowed; for output, `true` means an ndarray is found;
+                               is_ndarray can only return `true` when its initial value
+                               is `false`
+    @param[in] prefix  type marker if already read, otherwise set to 0
+
+    @return whether size determination completed
+    */
+    bool get_ubjson_size_value(std::size_t& result, bool& is_ndarray, char_int_type prefix = 0)
+    {
+        if (prefix == 0)
+        {
+            prefix = get_ignore_noop();
+        }
+
+        switch (prefix)
+        {
+            case 'U':
+            {
+                std::uint8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number); // NOLINT(bugprone-signed-char-misuse,cert-str34-c): number is not a char
+                return true;
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                if (!value_in_range_of<std::size_t>(number))
+                {
+                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = conditional_static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (!value_in_range_of<std::size_t>(number))
+                {
+                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
+                }
+                result = detail::conditional_static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case '[':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                if (is_ndarray) // ndarray dimensional vector can only contain integers, and can not embed another array
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read, exception_message(input_format, "ndarray dimensional vector is not allowed", "size"), nullptr));
+                }
+                std::vector<size_t> dim;
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_ndarray_size(dim)))
+                {
+                    return false;
+                }
+                if (dim.size() == 1 || (dim.size() == 2 && dim.at(0) == 1)) // return normal array size if 1D row vector
+                {
+                    result = dim.at(dim.size() - 1);
+                    return true;
+                }
+                if (!dim.empty())  // if ndarray, convert to an object in JData annotated array format
+                {
+                    for (auto i : dim) // test if any dimension in an ndarray is 0, if so, return a 1D empty container
+                    {
+                        if ( i == 0 )
+                        {
+                            result = 0;
+                            return true;
+                        }
+                    }
+
+                    string_t key = "_ArraySize_";
+                    if (JSON_HEDLEY_UNLIKELY(!sax->start_object(3) || !sax->key(key) || !sax->start_array(dim.size())))
+                    {
+                        return false;
+                    }
+                    result = 1;
+                    for (auto i : dim)
+                    {
+                        result *= i;
+                        if (result == 0 || result == npos) // because dim elements shall not have zeros, result = 0 means overflow happened; it also can't be npos as it is used to initialize size in get_ubjson_size_type()
+                        {
+                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408, exception_message(input_format, "excessive ndarray size caused overflow", "size"), nullptr));
+                        }
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(static_cast<number_unsigned_t>(i))))
+                        {
+                            return false;
+                        }
+                    }
+                    is_ndarray = true;
+                    return sax->end_array();
+                }
+                result = 0;
+                return true;
+            }
+
+            default:
+                break;
+        }
+        auto last_token = get_token_string();
+        std::string message;
+
+        if (input_format != input_format_t::bjdata)
+        {
+            message = "expected length type specification (U, i, I, l, L) after '#'; last byte: 0x" + last_token;
+        }
+        else
+        {
+            message = "expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x" + last_token;
+        }
+        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format, message, "size"), nullptr));
+    }
+
+    /*!
+    @brief determine the type and size for a container
+
+    In the optimized UBJSON format, a type and a size can be provided to allow
+    for a more compact representation.
+
+    @param[out] result  pair of the size and the type
+    @param[in] inside_ndarray  whether the parser is parsing an ND array dimensional vector
+
+    @return whether pair creation completed
+    */
+    bool get_ubjson_size_type(std::pair<std::size_t, char_int_type>& result, bool inside_ndarray = false)
+    {
+        result.first = npos; // size
+        result.second = 0; // type
+        bool is_ndarray = false;
+
+        get_ignore_noop();
+
+        if (current == '$')
+        {
+            result.second = get();  // must not ignore 'N', because 'N' maybe the type
+            if (input_format == input_format_t::bjdata
+                    && JSON_HEDLEY_UNLIKELY(std::binary_search(bjd_optimized_type_markers.begin(), bjd_optimized_type_markers.end(), result.second)))
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, concat("marker 0x", last_token, " is not a permitted optimized array type"), "type"), nullptr));
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "type")))
+            {
+                return false;
+            }
+
+            get_ignore_noop();
+            if (JSON_HEDLEY_UNLIKELY(current != '#'))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "value")))
+                {
+                    return false;
+                }
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, concat("expected '#' after type information; last byte: 0x", last_token), "size"), nullptr));
+            }
+
+            const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
+            if (input_format == input_format_t::bjdata && is_ndarray)
+            {
+                if (inside_ndarray)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
+                                            exception_message(input_format, "ndarray can not be recursive", "size"), nullptr));
+                }
+                result.second |= (1 << 8); // use bit 8 to indicate ndarray, all UBJSON and BJData markers should be ASCII letters
+            }
+            return is_error;
+        }
+
+        if (current == '#')
+        {
+            const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
+            if (input_format == input_format_t::bjdata && is_ndarray)
+            {
+                return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
+                                        exception_message(input_format, "ndarray requires both type and size", "size"), nullptr));
+            }
+            return is_error;
+        }
+
+        return true;
+    }
+
+    /*!
+    @param prefix  the previously read or set type prefix
+    @return whether value creation completed
+    */
+    bool get_ubjson_value(const char_int_type prefix)
+    {
+        switch (prefix)
+        {
+            case char_traits<char_type>::eof():  // EOF
+                return unexpect_eof(input_format, "value");
+
+            case 'T':  // true
+                return sax->boolean(true);
+            case 'F':  // false
+                return sax->boolean(false);
+
+            case 'Z':  // null
+                return sax->null();
+
+            case 'U':
+            {
+                std::uint8_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'h':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                const auto byte1_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+                {
+                    return false;
+                }
+                const auto byte2_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+                {
+                    return false;
+                }
+
+                const auto byte1 = static_cast<unsigned char>(byte1_raw);
+                const auto byte2 = static_cast<unsigned char>(byte2_raw);
+
+                // code from RFC 7049, Appendix D, Figure 3:
+                // As half-precision floating-point numbers were only added
+                // to IEEE 754 in 2008, today's programming platforms often
+                // still only have limited support for them. It is very
+                // easy to include at least decoding support for them even
+                // without such support. An example of a small decoder for
+                // half-precision floating-point numbers in the C language
+                // is shown in Fig. 3.
+                const auto half = static_cast<unsigned int>((byte2 << 8u) + byte1);
+                const double val = [&half]
+                {
+                    const int exp = (half >> 10u) & 0x1Fu;
+                    const unsigned int mant = half & 0x3FFu;
+                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(mant <= 1024);
+                    switch (exp)
+                    {
+                        case 0:
+                            return std::ldexp(mant, -24);
+                        case 31:
+                            return (mant == 0)
+                            ? std::numeric_limits<double>::infinity()
+                            : std::numeric_limits<double>::quiet_NaN();
+                        default:
+                            return std::ldexp(mant + 1024, exp - 25);
+                    }
+                }();
+                return sax->number_float((half & 0x8000u) != 0
+                                         ? static_cast<number_float_t>(-val)
+                                         : static_cast<number_float_t>(val), "");
+            }
+
+            case 'd':
+            {
+                float number{};
+                return get_number(input_format, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'D':
+            {
+                double number{};
+                return get_number(input_format, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'H':
+            {
+                return get_ubjson_high_precision_number();
+            }
+
+            case 'C':  // char
+            {
+                get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "char")))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(current > 127))
+                {
+                    auto last_token = get_token_string();
+                    return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                            exception_message(input_format, concat("byte after 'C' must be in range 0x00..0x7F; last byte: 0x", last_token), "char"), nullptr));
+                }
+                string_t s(1, static_cast<typename string_t::value_type>(current));
+                return sax->string(s);
+            }
+
+            case 'S':  // string
+            {
+                string_t s;
+                return get_ubjson_string(s) && sax->string(s);
+            }
+
+            case '[':  // array
+                return get_ubjson_array();
+
+            case '{':  // object
+                return get_ubjson_object();
+
+            default: // anything else
+                break;
+        }
+        auto last_token = get_token_string();
+        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format, "invalid byte: 0x" + last_token, "value"), nullptr));
+    }
+
+    /*!
+    @return whether array creation completed
+    */
+    bool get_ubjson_array()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        // if bit-8 of size_and_type.second is set to 1, encode bjdata ndarray as an object in JData annotated array format (https://github.com/NeuroJSON/jdata):
+        // {"_ArrayType_" : "typeid", "_ArraySize_" : [n1, n2, ...], "_ArrayData_" : [v1, v2, ...]}
+
+        if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
+        {
+            size_and_type.second &= ~(static_cast<char_int_type>(1) << 8);  // use bit 8 to indicate ndarray, here we remove the bit to restore the type marker
+            auto it = std::lower_bound(bjd_types_map.begin(), bjd_types_map.end(), size_and_type.second, [](const bjd_type & p, char_int_type t)
+            {
+                return p.first < t;
+            });
+            string_t key = "_ArrayType_";
+            if (JSON_HEDLEY_UNLIKELY(it == bjd_types_map.end() || it->first != size_and_type.second))
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, "invalid byte: 0x" + last_token, "type"), nullptr));
+            }
+
+            string_t type = it->second; // sax->string() takes a reference
+            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->string(type)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second == 'C')
+            {
+                size_and_type.second = 'U';
+            }
+
+            key = "_ArrayData_";
+            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->start_array(size_and_type.first) ))
+            {
+                return false;
+            }
+
+            for (std::size_t i = 0; i < size_and_type.first; ++i)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                {
+                    return false;
+                }
+            }
+
+            return (sax->end_array() && sax->end_object());
+        }
+
+        if (size_and_type.first != npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                if (size_and_type.second != 'N')
+                {
+                    for (std::size_t i = 0; i < size_and_type.first; ++i)
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                        {
+                            return false;
+                        }
+                    }
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+            {
+                return false;
+            }
+
+            while (current != ']')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal(false)))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @return whether object creation completed
+    */
+    bool get_ubjson_object()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        // do not accept ND-array size in objects in BJData
+        if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format, "BJData object does not support ND-array size in optimized format", "object"), nullptr));
+        }
+
+        string_t key;
+        if (size_and_type.first != npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+            {
+                return false;
+            }
+
+            while (current != '}')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key, false) || !sax->key(key)))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+                key.clear();
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    // Note, no reader for UBJSON binary types is implemented because they do
+    // not exist
+
+    bool get_ubjson_high_precision_number()
+    {
+        // get size of following number string
+        std::size_t size{};
+        bool no_ndarray = true;
+        auto res = get_ubjson_size_value(size, no_ndarray);
+        if (JSON_HEDLEY_UNLIKELY(!res))
+        {
+            return res;
+        }
+
+        // get number string
+        std::vector<char> number_vector;
+        for (std::size_t i = 0; i < size; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+            {
+                return false;
+            }
+            number_vector.push_back(static_cast<char>(current));
+        }
+
+        // parse number string
+        using ia_type = decltype(detail::input_adapter(number_vector));
+        auto number_lexer = detail::lexer<BasicJsonType, ia_type>(detail::input_adapter(number_vector), false);
+        const auto result_number = number_lexer.scan();
+        const auto number_string = number_lexer.get_token_string();
+        const auto result_remainder = number_lexer.scan();
+
+        using token_type = typename detail::lexer_base<BasicJsonType>::token_type;
+
+        if (JSON_HEDLEY_UNLIKELY(result_remainder != token_type::end_of_input))
+        {
+            return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+                                    exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
+        }
+
+        switch (result_number)
+        {
+            case token_type::value_integer:
+                return sax->number_integer(number_lexer.get_number_integer());
+            case token_type::value_unsigned:
+                return sax->number_unsigned(number_lexer.get_number_unsigned());
+            case token_type::value_float:
+                return sax->number_float(number_lexer.get_number_float(), std::move(number_string));
+            case token_type::uninitialized:
+            case token_type::literal_true:
+            case token_type::literal_false:
+            case token_type::literal_null:
+            case token_type::value_string:
+            case token_type::begin_array:
+            case token_type::begin_object:
+            case token_type::end_array:
+            case token_type::end_object:
+            case token_type::name_separator:
+            case token_type::value_separator:
+            case token_type::parse_error:
+            case token_type::end_of_input:
+            case token_type::literal_or_value:
+            default:
+                return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+                                        exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
+        }
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*!
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a -'ve valued
+    `char_traits<char_type>::eof()` in that case.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++chars_read;
+        return current = ia.get_character();
+    }
+
+    /*!
+    @brief get_to read into a primitive type
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns false instead
+
+    @return bool, whether the read was successful
+    */
+    template<class T>
+    bool get_to(T& dest, const input_format_t format, const char* context)
+    {
+        auto new_chars_read = ia.get_elements(&dest);
+        chars_read += new_chars_read;
+        if (JSON_HEDLEY_UNLIKELY(new_chars_read < sizeof(T)))
+        {
+            // in case of failure, advance position by 1 to report failing location
+            ++chars_read;
+            sax->parse_error(chars_read, "<end of file>", parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context), nullptr));
+            return false;
+        }
+        return true;
+    }
+
+    /*!
+    @return character read from the input after ignoring all 'N' entries
+    */
+    char_int_type get_ignore_noop()
+    {
+        do
+        {
+            get();
+        }
+        while (current == 'N');
+
+        return current;
+    }
+
+    template<class NumberType>
+    static void byte_swap(NumberType& number)
+    {
+        constexpr std::size_t sz = sizeof(number);
+#ifdef __cpp_lib_byteswap
+        if constexpr (sz == 1)
+        {
+            return;
+        }
+        if constexpr(std::is_integral_v<NumberType>)
+        {
+            number = std::byteswap(number);
+            return;
+        }
+#endif
+        auto* ptr = reinterpret_cast<std::uint8_t*>(&number);
+        for (std::size_t i = 0; i < sz / 2; ++i)
+        {
+            std::swap(ptr[i], ptr[sz - i - 1]);
+        }
+    }
+
+    /*
+    @brief read a number from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format   the current format (for diagnostics)
+    @param[out] result  number of type @a NumberType
+
+    @return whether conversion completed
+
+    @note This function needs to respect the system's endianness, because
+          bytes in CBOR, MessagePack, and UBJSON are stored in network order
+          (big endian) and therefore need reordering on little endian systems.
+          On the other hand, BSON and BJData use little endian and should reorder
+          on big endian systems.
+    */
+    template<typename NumberType, bool InputIsLittleEndian = false>
+    bool get_number(const input_format_t format, NumberType& result)
+    {
+        // read in the original format
+
+        if (JSON_HEDLEY_UNLIKELY(!get_to(result, format, "number")))
+        {
+            return false;
+        }
+        if (is_little_endian != (InputIsLittleEndian || format == input_format_t::bjdata))
+        {
+            byte_swap(result);
+        }
+        return true;
+    }
+
+    /*!
+    @brief create a string by reading characters from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of characters to read
+    @param[out] result string created by reading @a len bytes
+
+    @return whether string creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of string memory.
+    */
+    template<typename NumberType>
+    bool get_string(const input_format_t format,
+                    const NumberType len,
+                    string_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "string")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<typename string_t::value_type>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @brief create a byte array by reading bytes from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of bytes to read
+    @param[out] result byte array created by reading @a len bytes
+
+    @return whether byte array creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of memory.
+    */
+    template<typename NumberType>
+    bool get_binary(const input_format_t format,
+                    const NumberType len,
+                    binary_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "binary")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<std::uint8_t>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @param[in] format   the current format (for diagnostics)
+    @param[in] context  further context information (for diagnostics)
+    @return whether the last read character is not EOF
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool unexpect_eof(const input_format_t format, const char* context) const
+    {
+        if (JSON_HEDLEY_UNLIKELY(current == char_traits<char_type>::eof()))
+        {
+            return sax->parse_error(chars_read, "<end of file>",
+                                    parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context), nullptr));
+        }
+        return true;
+    }
+
+    /*!
+    @return a string representation of the last read byte
+    */
+    std::string get_token_string() const
+    {
+        std::array<char, 3> cr{{}};
+        static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        return std::string{cr.data()};
+    }
+
+    /*!
+    @param[in] format   the current format
+    @param[in] detail   a detailed error message
+    @param[in] context  further context information
+    @return a message string to use in the parse_error exceptions
+    */
+    std::string exception_message(const input_format_t format,
+                                  const std::string& detail,
+                                  const std::string& context) const
+    {
+        std::string error_msg = "syntax error while parsing ";
+
+        switch (format)
+        {
+            case input_format_t::cbor:
+                error_msg += "CBOR";
+                break;
+
+            case input_format_t::msgpack:
+                error_msg += "MessagePack";
+                break;
+
+            case input_format_t::ubjson:
+                error_msg += "UBJSON";
+                break;
+
+            case input_format_t::bson:
+                error_msg += "BSON";
+                break;
+
+            case input_format_t::bjdata:
+                error_msg += "BJData";
+                break;
+
+            case input_format_t::json: // LCOV_EXCL_LINE
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+        return concat(error_msg, ' ', context, ": ", detail);
+    }
+
+  private:
+    static JSON_INLINE_VARIABLE constexpr std::size_t npos = static_cast<std::size_t>(-1);
+
+    /// input adapter
+    InputAdapterType ia;
+
+    /// the current character
+    char_int_type current = char_traits<char_type>::eof();
+
+    /// the number of characters read
+    std::size_t chars_read = 0;
+
+    /// whether we can assume little endianness
+    const bool is_little_endian = little_endianness();
+
+    /// input format
+    const input_format_t input_format = input_format_t::json;
+
+    /// the SAX parser
+    json_sax_t* sax = nullptr;
+
+    // excluded markers in bjdata optimized type
+#define JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_ \
+    make_array<char_int_type>('F', 'H', 'N', 'S', 'T', 'Z', '[', '{')
+
+#define JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_ \
+    make_array<bjd_type>(                      \
+    bjd_type{'C', "char"},                     \
+    bjd_type{'D', "double"},                   \
+    bjd_type{'I', "int16"},                    \
+    bjd_type{'L', "int64"},                    \
+    bjd_type{'M', "uint64"},                   \
+    bjd_type{'U', "uint8"},                    \
+    bjd_type{'d', "single"},                   \
+    bjd_type{'i', "int8"},                     \
+    bjd_type{'l', "int32"},                    \
+    bjd_type{'m', "uint32"},                   \
+    bjd_type{'u', "uint16"})
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // lookup tables
+    // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
+    const decltype(JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_) bjd_optimized_type_markers =
+        JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_;
+
+    using bjd_type = std::pair<char_int_type, string_t>;
+    // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
+    const decltype(JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_) bjd_types_map =
+        JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_;
+
+#undef JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_
+#undef JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_
+};
+
+#ifndef JSON_HAS_CPP_17
+    template<typename BasicJsonType, typename InputAdapterType, typename SAX>
+    constexpr std::size_t binary_reader<BasicJsonType, InputAdapterType, SAX>::npos;
+#endif
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/input/parser.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cmath> // isfinite
+#include <cstdint> // uint8_t
+#include <functional> // function
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/json_sax.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/is_sax.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+////////////
+// parser //
+////////////
+
+enum class parse_event_t : std::uint8_t
+{
+    /// the parser read `{` and started to process a JSON object
+    object_start,
+    /// the parser read `}` and finished processing a JSON object
+    object_end,
+    /// the parser read `[` and started to process a JSON array
+    array_start,
+    /// the parser read `]` and finished processing a JSON array
+    array_end,
+    /// the parser read a key of a value in an object
+    key,
+    /// the parser finished reading a JSON value
+    value
+};
+
+template<typename BasicJsonType>
+using parser_callback_t =
+    std::function<bool(int /*depth*/, parse_event_t /*event*/, BasicJsonType& /*parsed*/)>;
+
+/*!
+@brief syntax analysis
+
+This class implements a recursive descent parser.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class parser
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+    using token_type = typename lexer_t::token_type;
+
+  public:
+    /// a parser reading from an input adapter
+    explicit parser(InputAdapterType&& adapter,
+                    parser_callback_t<BasicJsonType> cb = nullptr,
+                    const bool allow_exceptions_ = true,
+                    const bool skip_comments = false)
+        : callback(std::move(cb))
+        , m_lexer(std::move(adapter), skip_comments)
+        , allow_exceptions(allow_exceptions_)
+    {
+        // read first token
+        get_token();
+    }
+
+    /*!
+    @brief public parser interface
+
+    @param[in] strict      whether to expect the last token to be EOF
+    @param[in,out] result  parsed JSON value
+
+    @throw parse_error.101 in case of an unexpected token
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+    */
+    void parse(const bool strict, BasicJsonType& result)
+    {
+        if (callback)
+        {
+            json_sax_dom_callback_parser<BasicJsonType, InputAdapterType> sdp(result, callback, allow_exceptions, &m_lexer);
+            sax_parse_internal(&sdp);
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(),
+                                                    exception_message(token_type::end_of_input, "value"), nullptr));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+
+            // set top-level value to null if it was discarded by the callback
+            // function
+            if (result.is_discarded())
+            {
+                result = nullptr;
+            }
+        }
+        else
+        {
+            json_sax_dom_parser<BasicJsonType, InputAdapterType> sdp(result, allow_exceptions, &m_lexer);
+            sax_parse_internal(&sdp);
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+        }
+
+        result.assert_invariant();
+    }
+
+    /*!
+    @brief public accept interface
+
+    @param[in] strict  whether to expect the last token to be EOF
+    @return whether the input is a proper JSON text
+    */
+    bool accept(const bool strict = true)
+    {
+        json_sax_acceptor<BasicJsonType> sax_acceptor;
+        return sax_parse(&sax_acceptor, strict);
+    }
+
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse(SAX* sax, const bool strict = true)
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+        const bool result = sax_parse_internal(sax);
+
+        // strict mode: next byte must be EOF
+        if (result && strict && (get_token() != token_type::end_of_input))
+        {
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
+        }
+
+        return result;
+    }
+
+  private:
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse_internal(SAX* sax)
+    {
+        // stack to remember the hierarchy of structured values we are parsing
+        // true = array; false = object
+        std::vector<bool> states;
+        // value to avoid a goto (see comment where set to true)
+        bool skip_to_state_evaluation = false;
+
+        while (true)
+        {
+            if (!skip_to_state_evaluation)
+            {
+                // invariant: get_token() was called before each iteration
+                switch (last_token)
+                {
+                    case token_type::begin_object:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing } -> we are done
+                        if (get_token() == token_type::end_object)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // parse key
+                        if (JSON_HEDLEY_UNLIKELY(last_token != token_type::value_string))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
+                        }
+                        if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        // parse separator (:)
+                        if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
+                        }
+
+                        // remember we are now inside an object
+                        states.push_back(false);
+
+                        // parse values
+                        get_token();
+                        continue;
+                    }
+
+                    case token_type::begin_array:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing ] -> we are done
+                        if (get_token() == token_type::end_array)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // remember we are now inside an array
+                        states.push_back(true);
+
+                        // parse values (no need to call get_token)
+                        continue;
+                    }
+
+                    case token_type::value_float:
+                    {
+                        const auto res = m_lexer.get_number_float();
+
+                        if (JSON_HEDLEY_UNLIKELY(!std::isfinite(res)))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    out_of_range::create(406, concat("number overflow parsing '", m_lexer.get_token_string(), '\''), nullptr));
+                        }
+
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_float(res, m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        break;
+                    }
+
+                    case token_type::literal_false:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(false)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_null:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->null()))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_true:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(true)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_integer:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_integer(m_lexer.get_number_integer())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_string:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->string(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_unsigned:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(m_lexer.get_number_unsigned())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::parse_error:
+                    {
+                        // using "uninitialized" to avoid "expected" message
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::uninitialized, "value"), nullptr));
+                    }
+                    case token_type::end_of_input:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(m_lexer.get_position().chars_read_total == 1))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(),
+                                                            "attempting to parse an empty input; check that your input string or stream contains the expected JSON", nullptr));
+                        }
+
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), nullptr));
+                    }
+                    case token_type::uninitialized:
+                    case token_type::end_array:
+                    case token_type::end_object:
+                    case token_type::name_separator:
+                    case token_type::value_separator:
+                    case token_type::literal_or_value:
+                    default: // the last token was unexpected
+                    {
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), nullptr));
+                    }
+                }
+            }
+            else
+            {
+                skip_to_state_evaluation = false;
+            }
+
+            // we reached this line after we successfully parsed a value
+            if (states.empty())
+            {
+                // empty stack: we reached the end of the hierarchy: done
+                return true;
+            }
+
+            if (states.back())  // array
+            {
+                // comma -> next value
+                if (get_token() == token_type::value_separator)
+                {
+                    // parse a new value
+                    get_token();
+                    continue;
+                }
+
+                // closing ]
+                if (JSON_HEDLEY_LIKELY(last_token == token_type::end_array))
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                    {
+                        return false;
+                    }
+
+                    // We are done with this array. Before we can parse a
+                    // new value, we need to evaluate the new state first.
+                    // By setting skip_to_state_evaluation to false, we
+                    // are effectively jumping to the beginning of this if.
+                    JSON_ASSERT(!states.empty());
+                    states.pop_back();
+                    skip_to_state_evaluation = true;
+                    continue;
+                }
+
+                return sax->parse_error(m_lexer.get_position(),
+                                        m_lexer.get_token_string(),
+                                        parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_array, "array"), nullptr));
+            }
+
+            // states.back() is false -> object
+
+            // comma -> next value
+            if (get_token() == token_type::value_separator)
+            {
+                // parse key
+                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::value_string))
+                {
+                    return sax->parse_error(m_lexer.get_position(),
+                                            m_lexer.get_token_string(),
+                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
+                }
+
+                if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                {
+                    return false;
+                }
+
+                // parse separator (:)
+                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                {
+                    return sax->parse_error(m_lexer.get_position(),
+                                            m_lexer.get_token_string(),
+                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
+                }
+
+                // parse values
+                get_token();
+                continue;
+            }
+
+            // closing }
+            if (JSON_HEDLEY_LIKELY(last_token == token_type::end_object))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                {
+                    return false;
+                }
+
+                // We are done with this object. Before we can parse a
+                // new value, we need to evaluate the new state first.
+                // By setting skip_to_state_evaluation to false, we
+                // are effectively jumping to the beginning of this if.
+                JSON_ASSERT(!states.empty());
+                states.pop_back();
+                skip_to_state_evaluation = true;
+                continue;
+            }
+
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_object, "object"), nullptr));
+        }
+    }
+
+    /// get next token from lexer
+    token_type get_token()
+    {
+        return last_token = m_lexer.scan();
+    }
+
+    std::string exception_message(const token_type expected, const std::string& context)
+    {
+        std::string error_msg = "syntax error ";
+
+        if (!context.empty())
+        {
+            error_msg += concat("while parsing ", context, ' ');
+        }
+
+        error_msg += "- ";
+
+        if (last_token == token_type::parse_error)
+        {
+            error_msg += concat(m_lexer.get_error_message(), "; last read: '",
+                                m_lexer.get_token_string(), '\'');
+        }
+        else
+        {
+            error_msg += concat("unexpected ", lexer_t::token_type_name(last_token));
+        }
+
+        if (expected != token_type::uninitialized)
+        {
+            error_msg += concat("; expected ", lexer_t::token_type_name(expected));
+        }
+
+        return error_msg;
+    }
+
+  private:
+    /// callback function
+    const parser_callback_t<BasicJsonType> callback = nullptr;
+    /// the type of the last read token
+    token_type last_token = token_type::uninitialized;
+    /// the lexer
+    lexer_t m_lexer;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/iterators/internal_iterator.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // ptrdiff_t
+#include <limits>  // numeric_limits
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*
+@brief an iterator for primitive JSON types
+
+This class models an iterator for primitive JSON types (boolean, number,
+string). It's only purpose is to allow the iterator/const_iterator classes
+to "iterate" over primitive values. Internally, the iterator is modeled by
+a `difference_type` variable. Value begin_value (`0`) models the begin,
+end_value (`1`) models past the end.
+*/
+class primitive_iterator_t
+{
+  private:
+    using difference_type = std::ptrdiff_t;
+    static constexpr difference_type begin_value = 0;
+    static constexpr difference_type end_value = begin_value + 1;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /// iterator as signed integer type
+    difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
+
+  public:
+    constexpr difference_type get_value() const noexcept
+    {
+        return m_it;
+    }
+
+    /// set iterator to a defined beginning
+    void set_begin() noexcept
+    {
+        m_it = begin_value;
+    }
+
+    /// set iterator to a defined past the end
+    void set_end() noexcept
+    {
+        m_it = end_value;
+    }
+
+    /// return whether the iterator can be dereferenced
+    constexpr bool is_begin() const noexcept
+    {
+        return m_it == begin_value;
+    }
+
+    /// return whether the iterator is at end
+    constexpr bool is_end() const noexcept
+    {
+        return m_it == end_value;
+    }
+
+    friend constexpr bool operator==(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it == rhs.m_it;
+    }
+
+    friend constexpr bool operator<(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it < rhs.m_it;
+    }
+
+    primitive_iterator_t operator+(difference_type n) noexcept
+    {
+        auto result = *this;
+        result += n;
+        return result;
+    }
+
+    friend constexpr difference_type operator-(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it - rhs.m_it;
+    }
+
+    primitive_iterator_t& operator++() noexcept
+    {
+        ++m_it;
+        return *this;
+    }
+
+    primitive_iterator_t operator++(int)& noexcept // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        ++m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator--() noexcept
+    {
+        --m_it;
+        return *this;
+    }
+
+    primitive_iterator_t operator--(int)& noexcept // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        --m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator+=(difference_type n) noexcept
+    {
+        m_it += n;
+        return *this;
+    }
+
+    primitive_iterator_t& operator-=(difference_type n) noexcept
+    {
+        m_it -= n;
+        return *this;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief an iterator value
+
+@note This structure could easily be a union, but MSVC currently does not allow
+unions members with complex constructors, see https://github.com/nlohmann/json/pull/105.
+*/
+template<typename BasicJsonType> struct internal_iterator
+{
+    /// iterator for JSON objects
+    typename BasicJsonType::object_t::iterator object_iterator {};
+    /// iterator for JSON arrays
+    typename BasicJsonType::array_t::iterator array_iterator {};
+    /// generic iterator for all other types
+    primitive_iterator_t primitive_iterator {};
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/iterators/iter_impl.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <iterator> // iterator, random_access_iterator_tag, bidirectional_iterator_tag, advance, next
+#include <type_traits> // conditional, is_const, remove_const
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/iterators/internal_iterator.hpp>
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// forward declare, to be able to friend it later on
+template<typename IteratorType> class iteration_proxy;
+template<typename IteratorType> class iteration_proxy_value;
+
+/*!
+@brief a template for a bidirectional iterator for the @ref basic_json class
+This class implements a both iterators (iterator and const_iterator) for the
+@ref basic_json class.
+@note An iterator is called *initialized* when a pointer to a JSON value has
+      been set (e.g., by a constructor or a copy assignment). If the iterator is
+      default-constructed, it is *uninitialized* and most methods are undefined.
+      **The library uses assertions to detect calls on uninitialized iterators.**
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+@since version 1.0.0, simplified in version 2.0.9, change to bidirectional
+       iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)
+*/
+template<typename BasicJsonType>
+class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+{
+    /// the iterator with BasicJsonType of different const-ness
+    using other_iter_impl = iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
+    /// allow basic_json to access private members
+    friend other_iter_impl;
+    friend BasicJsonType;
+    friend iteration_proxy<iter_impl>;
+    friend iteration_proxy_value<iter_impl>;
+
+    using object_t = typename BasicJsonType::object_t;
+    using array_t = typename BasicJsonType::array_t;
+    // make sure BasicJsonType is basic_json or const basic_json
+    static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value,
+                  "iter_impl only accepts (const) basic_json");
+    // superficial check for the LegacyBidirectionalIterator named requirement
+    static_assert(std::is_base_of<std::bidirectional_iterator_tag, std::bidirectional_iterator_tag>::value
+                  &&  std::is_base_of<std::bidirectional_iterator_tag, typename std::iterator_traits<typename array_t::iterator>::iterator_category>::value,
+                  "basic_json iterator assumes array and object type iterators satisfy the LegacyBidirectionalIterator named requirement.");
+
+  public:
+    /// The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17.
+    /// The C++ Standard has never required user-defined iterators to derive from std::iterator.
+    /// A user-defined iterator should provide publicly accessible typedefs named
+    /// iterator_category, value_type, difference_type, pointer, and reference.
+    /// Note that value_type is required to be non-const, even for constant iterators.
+    using iterator_category = std::bidirectional_iterator_tag;
+
+    /// the type of the values when the iterator is dereferenced
+    using value_type = typename BasicJsonType::value_type;
+    /// a type to represent differences between iterators
+    using difference_type = typename BasicJsonType::difference_type;
+    /// defines a pointer to the type iterated over (value_type)
+    using pointer = typename std::conditional<std::is_const<BasicJsonType>::value,
+          typename BasicJsonType::const_pointer,
+          typename BasicJsonType::pointer>::type;
+    /// defines a reference to the type iterated over (value_type)
+    using reference =
+        typename std::conditional<std::is_const<BasicJsonType>::value,
+        typename BasicJsonType::const_reference,
+        typename BasicJsonType::reference>::type;
+
+    iter_impl() = default;
+    ~iter_impl() = default;
+    iter_impl(iter_impl&&) noexcept = default;
+    iter_impl& operator=(iter_impl&&) noexcept = default;
+
+    /*!
+    @brief constructor for a given JSON instance
+    @param[in] object  pointer to a JSON object for this iterator
+    @pre object != nullptr
+    @post The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    explicit iter_impl(pointer object) noexcept : m_object(object)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = typename object_t::iterator();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = typename array_t::iterator();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator = primitive_iterator_t();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @note The conventional copy constructor and copy assignment are implicitly
+          defined. Combined with the following converting constructor and
+          assignment, they support: (1) copy from iterator to iterator, (2)
+          copy from const iterator to const iterator, and (3) conversion from
+          iterator to const iterator. However conversion from const iterator
+          to iterator is not defined.
+    */
+
+    /*!
+    @brief const copy constructor
+    @param[in] other const iterator to copy from
+    @note This copy constructor had to be defined explicitly to circumvent a bug
+          occurring on msvc v19.0 compiler (VS 2015) debug build. For more
+          information refer to: https://github.com/nlohmann/json/issues/1608
+    */
+    iter_impl(const iter_impl<const BasicJsonType>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<const BasicJsonType>& other) noexcept
+    {
+        if (&other != this)
+        {
+            m_object = other.m_object;
+            m_it = other.m_it;
+        }
+        return *this;
+    }
+
+    /*!
+    @brief converting constructor
+    @param[in] other  non-const iterator to copy from
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other  non-const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept // NOLINT(cert-oop54-cpp)
+    {
+        m_object = other.m_object;
+        m_it = other.m_it;
+        return *this;
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief set the iterator to the first value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_begin() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_data.m_value.object->begin();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_data.m_value.array->begin();
+                break;
+            }
+
+            case value_t::null:
+            {
+                // set to end so begin()==end() is true: null is empty
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator.set_begin();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @brief set the iterator past the last value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_end() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_data.m_value.object->end();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_data.m_value.array->end();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+        }
+    }
+
+  public:
+    /*!
+    @brief return a reference to the value pointed to by the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator*() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_data.m_value.object->end());
+                return m_it.object_iterator->second;
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_data.m_value.array->end());
+                return *m_it.array_iterator;
+            }
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief dereference the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    pointer operator->() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_data.m_value.object->end());
+                return &(m_it.object_iterator->second);
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_data.m_value.array->end());
+                return &*m_it.array_iterator;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief post-increment (it++)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        ++(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-increment (++it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator++()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, 1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, 1);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                ++m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief post-decrement (it--)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator--(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        --(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-decrement (--it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator--()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, -1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, -1);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                --m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief comparison: equal
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    bool operator==(const IterImpl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", m_object));
+        }
+
+        // value-initialized forward iterators can be compared, and must compare equal to other value-initialized iterators of the same type #4493
+        if (m_object == nullptr)
+        {
+            return true;
+        }
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                return (m_it.object_iterator == other.m_it.object_iterator);
+
+            case value_t::array:
+                return (m_it.array_iterator == other.m_it.array_iterator);
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return (m_it.primitive_iterator == other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief comparison: not equal
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    bool operator!=(const IterImpl& other) const
+    {
+        return !operator==(other);
+    }
+
+    /*!
+    @brief comparison: smaller
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    bool operator<(const iter_impl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", m_object));
+        }
+
+        // value-initialized forward iterators can be compared, and must compare equal to other value-initialized iterators of the same type #4493
+        if (m_object == nullptr)
+        {
+            // the iterators are both value-initialized and are to be considered equal, but this function checks for smaller, so we return false
+            return false;
+        }
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(213, "cannot compare order of object iterators", m_object));
+
+            case value_t::array:
+                return (m_it.array_iterator < other.m_it.array_iterator);
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return (m_it.primitive_iterator < other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief comparison: less than or equal
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    bool operator<=(const iter_impl& other) const
+    {
+        return !other.operator < (*this);
+    }
+
+    /*!
+    @brief comparison: greater than
+    @pre (1) Both iterators are initialized to point to the same object, or (2) both iterators are value-initialized.
+    */
+    bool operator>(const iter_impl& other) const
+    {
+        return !operator<=(other);
+    }
+
+    /*!
+    @brief comparison: greater than or equal
+    @pre (1) The iterator is initialized; i.e. `m_object != nullptr`, or (2) both iterators are value-initialized.
+    */
+    bool operator>=(const iter_impl& other) const
+    {
+        return !operator<(other);
+    }
+
+    /*!
+    @brief add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator+=(difference_type i)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", m_object));
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, i);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator += i;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator-=(difference_type i)
+    {
+        return operator+=(-i);
+    }
+
+    /*!
+    @brief add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator+(difference_type i) const
+    {
+        auto result = *this;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief addition of distance and iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    friend iter_impl operator+(difference_type i, const iter_impl& it)
+    {
+        auto result = it;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator-(difference_type i) const
+    {
+        auto result = *this;
+        result -= i;
+        return result;
+    }
+
+    /*!
+    @brief return difference
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    difference_type operator-(const iter_impl& other) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", m_object));
+
+            case value_t::array:
+                return m_it.array_iterator - other.m_it.array_iterator;
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return m_it.primitive_iterator - other.m_it.primitive_iterator;
+        }
+    }
+
+    /*!
+    @brief access to successor
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator[](difference_type n) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(208, "cannot use operator[] for object iterators", m_object));
+
+            case value_t::array:
+                return *std::next(m_it.array_iterator, n);
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.get_value() == -n))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief return the key of an object iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    const typename object_t::key_type& key() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        if (JSON_HEDLEY_LIKELY(m_object->is_object()))
+        {
+            return m_it.object_iterator->first;
+        }
+
+        JSON_THROW(invalid_iterator::create(207, "cannot use key() for non-object iterators", m_object));
+    }
+
+    /*!
+    @brief return the value of an iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference value() const
+    {
+        return operator*();
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /// associated JSON instance
+    pointer m_object = nullptr;
+    /// the actual iterator of the associated instance
+    internal_iterator<typename std::remove_const<BasicJsonType>::type> m_it {};
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
+
+// #include <nlohmann/detail/iterators/json_reverse_iterator.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // ptrdiff_t
+#include <iterator> // reverse_iterator
+#include <utility> // declval
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+//////////////////////
+// reverse_iterator //
+//////////////////////
+
+/*!
+@brief a template for a reverse iterator class
+
+@tparam Base the base iterator type to reverse. Valid types are @ref
+iterator (to create @ref reverse_iterator) and @ref const_iterator (to
+create @ref const_reverse_iterator).
+
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+- [OutputIterator](https://en.cppreference.com/w/cpp/named_req/OutputIterator):
+  It is possible to write to the pointed-to element (only if @a Base is
+  @ref iterator).
+
+@since version 1.0.0
+*/
+template<typename Base>
+class json_reverse_iterator : public std::reverse_iterator<Base>
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    /// shortcut to the reverse iterator adapter
+    using base_iterator = std::reverse_iterator<Base>;
+    /// the reference type for the pointed-to element
+    using reference = typename Base::reference;
+
+    /// create reverse iterator from iterator
+    explicit json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
+        : base_iterator(it) {}
+
+    /// create reverse iterator from base class
+    explicit json_reverse_iterator(const base_iterator& it) noexcept : base_iterator(it) {}
+
+    /// post-increment (it++)
+    json_reverse_iterator operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator++(1));
+    }
+
+    /// pre-increment (++it)
+    json_reverse_iterator& operator++()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator++());
+    }
+
+    /// post-decrement (it--)
+    json_reverse_iterator operator--(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator--(1));
+    }
+
+    /// pre-decrement (--it)
+    json_reverse_iterator& operator--()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator--());
+    }
+
+    /// add to iterator
+    json_reverse_iterator& operator+=(difference_type i)
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator+=(i));
+    }
+
+    /// add to iterator
+    json_reverse_iterator operator+(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator+(i));
+    }
+
+    /// subtract from iterator
+    json_reverse_iterator operator-(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator-(i));
+    }
+
+    /// return difference
+    difference_type operator-(const json_reverse_iterator& other) const
+    {
+        return base_iterator(*this) - base_iterator(other);
+    }
+
+    /// access to successor
+    reference operator[](difference_type n) const
+    {
+        return *(this->operator+(n));
+    }
+
+    /// return the key of an object iterator
+    auto key() const -> decltype(std::declval<Base>().key())
+    {
+        auto it = --this->base();
+        return it.key();
+    }
+
+    /// return the value of an iterator
+    reference value() const
+    {
+        auto it = --this->base();
+        return it.operator * ();
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+// #include <nlohmann/detail/json_custom_base_class.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <type_traits> // conditional, is_same
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief Default base class of the @ref basic_json class.
+
+So that the correct implementations of the copy / move ctors / assign operators
+of @ref basic_json do not require complex case distinctions
+(no base class / custom base class used as customization point),
+@ref basic_json always has a base class.
+By default, this class is used because it is empty and thus has no effect
+on the behavior of @ref basic_json.
+*/
+struct json_default_base {};
+
+template<class T>
+using json_base_class = typename std::conditional <
+                        std::is_same<T, void>::value,
+                        json_default_base,
+                        T
+                        >::type;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/json_pointer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // all_of
+#include <cctype> // isdigit
+#include <cerrno> // errno, ERANGE
+#include <cstdlib> // strtoull
+#ifndef JSON_NO_IO
+    #include <iosfwd> // ostream
+#endif  // JSON_NO_IO
+#include <limits> // max
+#include <numeric> // accumulate
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/string_escape.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+/// @sa https://json.nlohmann.me/api/json_pointer/
+template<typename RefStringType>
+class json_pointer
+{
+    // allow basic_json to access private members
+    NLOHMANN_BASIC_JSON_TPL_DECLARATION
+    friend class basic_json;
+
+    template<typename>
+    friend class json_pointer;
+
+    template<typename T>
+    struct string_t_helper
+    {
+        using type = T;
+    };
+
+    NLOHMANN_BASIC_JSON_TPL_DECLARATION
+    struct string_t_helper<NLOHMANN_BASIC_JSON_TPL>
+    {
+        using type = StringType;
+    };
+
+  public:
+    // for backwards compatibility accept BasicJsonType
+    using string_t = typename string_t_helper<RefStringType>::type;
+
+    /// @brief create JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/json_pointer/
+    explicit json_pointer(const string_t& s = "")
+        : reference_tokens(split(s))
+    {}
+
+    /// @brief return a string representation of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/to_string/
+    string_t to_string() const
+    {
+        return std::accumulate(reference_tokens.begin(), reference_tokens.end(),
+                               string_t{},
+                               [](const string_t& a, const string_t& b)
+        {
+            return detail::concat(a, '/', detail::escape(b));
+        });
+    }
+
+    /// @brief return a string representation of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_string/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, to_string())
+    operator string_t() const
+    {
+        return to_string();
+    }
+
+#ifndef JSON_NO_IO
+    /// @brief write string representation of the JSON pointer to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const json_pointer& ptr)
+    {
+        o << ptr.to_string();
+        return o;
+    }
+#endif
+
+    /// @brief append another JSON pointer at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(const json_pointer& ptr)
+    {
+        reference_tokens.insert(reference_tokens.end(),
+                                ptr.reference_tokens.begin(),
+                                ptr.reference_tokens.end());
+        return *this;
+    }
+
+    /// @brief append an unescaped reference token at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(string_t token)
+    {
+        push_back(std::move(token));
+        return *this;
+    }
+
+    /// @brief append an array index at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(std::size_t array_idx)
+    {
+        return *this /= std::to_string(array_idx);
+    }
+
+    /// @brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs,
+                                  const json_pointer& rhs)
+    {
+        return json_pointer(lhs) /= rhs;
+    }
+
+    /// @brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs, string_t token) // NOLINT(performance-unnecessary-value-param)
+    {
+        return json_pointer(lhs) /= std::move(token);
+    }
+
+    /// @brief create a new JSON pointer by appending the array-index-token at the end of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs, std::size_t array_idx)
+    {
+        return json_pointer(lhs) /= array_idx;
+    }
+
+    /// @brief returns the parent of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/parent_pointer/
+    json_pointer parent_pointer() const
+    {
+        if (empty())
+        {
+            return *this;
+        }
+
+        json_pointer res = *this;
+        res.pop_back();
+        return res;
+    }
+
+    /// @brief remove last reference token
+    /// @sa https://json.nlohmann.me/api/json_pointer/pop_back/
+    void pop_back()
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        reference_tokens.pop_back();
+    }
+
+    /// @brief return last reference token
+    /// @sa https://json.nlohmann.me/api/json_pointer/back/
+    const string_t& back() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        return reference_tokens.back();
+    }
+
+    /// @brief append an unescaped token at the end of the reference pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
+    void push_back(const string_t& token)
+    {
+        reference_tokens.push_back(token);
+    }
+
+    /// @brief append an unescaped token at the end of the reference pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
+    void push_back(string_t&& token)
+    {
+        reference_tokens.push_back(std::move(token));
+    }
+
+    /// @brief return whether pointer points to the root document
+    /// @sa https://json.nlohmann.me/api/json_pointer/empty/
+    bool empty() const noexcept
+    {
+        return reference_tokens.empty();
+    }
+
+  private:
+    /*!
+    @param[in] s  reference token to be converted into an array index
+
+    @return integer representation of @a s
+
+    @throw parse_error.106  if an array index begins with '0'
+    @throw parse_error.109  if an array index begins not with a digit
+    @throw out_of_range.404 if string @a s could not be converted to an integer
+    @throw out_of_range.410 if an array index exceeds size_type
+    */
+    template<typename BasicJsonType>
+    static typename BasicJsonType::size_type array_index(const string_t& s)
+    {
+        using size_type = typename BasicJsonType::size_type;
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && s[0] == '0'))
+        {
+            JSON_THROW(detail::parse_error::create(106, 0, detail::concat("array index '", s, "' must not begin with '0'"), nullptr));
+        }
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && !(s[0] >= '1' && s[0] <= '9')))
+        {
+            JSON_THROW(detail::parse_error::create(109, 0, detail::concat("array index '", s, "' is not a number"), nullptr));
+        }
+
+        const char* p = s.c_str();
+        char* p_end = nullptr;
+        errno = 0; // strtoull doesn't reset errno
+        const unsigned long long res = std::strtoull(p, &p_end, 10); // NOLINT(runtime/int)
+        if (p == p_end // invalid input or empty string
+                || errno == ERANGE // out of range
+                || JSON_HEDLEY_UNLIKELY(static_cast<std::size_t>(p_end - p) != s.size())) // incomplete read
+        {
+            JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", s, "'"), nullptr));
+        }
+
+        // only triggered on special platforms (like 32bit), see also
+        // https://github.com/nlohmann/json/pull/2203
+        if (res >= static_cast<unsigned long long>((std::numeric_limits<size_type>::max)()))  // NOLINT(runtime/int)
+        {
+            JSON_THROW(detail::out_of_range::create(410, detail::concat("array index ", s, " exceeds size_type"), nullptr));   // LCOV_EXCL_LINE
+        }
+
+        return static_cast<size_type>(res);
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    json_pointer top() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        json_pointer result = *this;
+        result.reference_tokens = {reference_tokens[0]};
+        return result;
+    }
+
+  private:
+    /*!
+    @brief create and return a reference to the pointed to value
+
+    @complexity Linear in the number of reference tokens.
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.313 if value cannot be unflattened
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_and_create(BasicJsonType& j) const
+    {
+        auto* result = &j;
+
+        // in case no reference tokens exist, return a reference to the JSON value
+        // j which will be overwritten by a primitive value
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (result->type())
+            {
+                case detail::value_t::null:
+                {
+                    if (reference_token == "0")
+                    {
+                        // start a new array if reference token is 0
+                        result = &result->operator[](0);
+                    }
+                    else
+                    {
+                        // start a new object otherwise
+                        result = &result->operator[](reference_token);
+                    }
+                    break;
+                }
+
+                case detail::value_t::object:
+                {
+                    // create an entry in the object
+                    result = &result->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    // create an entry in the array
+                    result = &result->operator[](array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                /*
+                The following code is only reached if there exists a reference
+                token _and_ the current value is primitive. In this case, we have
+                an error situation, because primitive values may only occur as
+                single value; that is, with an empty list of reference tokens.
+                */
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::type_error::create(313, "invalid value to unflatten", &j));
+            }
+        }
+
+        return *result;
+    }
+
+    /*!
+    @brief return a reference to the pointed to value
+
+    @note This version does not throw if a value is not present, but tries to
+          create nested values instead. For instance, calling this function
+          with pointer `"/this/that"` on a null value is equivalent to calling
+          `operator[]("this").operator[]("that")` on that value, effectively
+          changing the null value to an object.
+
+    @param[in] ptr  a JSON value
+
+    @return reference to the JSON value pointed to by the JSON pointer
+
+    @complexity Linear in the length of the JSON pointer.
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_unchecked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            // convert null values to arrays or objects before continuing
+            if (ptr->is_null())
+            {
+                // check if reference token is a number
+                const bool nums =
+                    std::all_of(reference_token.begin(), reference_token.end(),
+                                [](const unsigned char x)
+                {
+                    return std::isdigit(x);
+                });
+
+                // change value to array for numbers or "-" or to object otherwise
+                *ptr = (nums || reference_token == "-")
+                       ? detail::value_t::array
+                       : detail::value_t::object;
+            }
+
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (reference_token == "-")
+                    {
+                        // explicitly treat "-" as index beyond the end
+                        ptr = &ptr->operator[](ptr->m_data.m_value.array->size());
+                    }
+                    else
+                    {
+                        // convert array index to number; unchecked access
+                        ptr = &ptr->operator[](array_index<BasicJsonType>(reference_token));
+                    }
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_checked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
+                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
+                                ") is out of range"), ptr));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @brief return a const reference to the pointed to value
+
+    @param[in] ptr  a JSON value
+
+    @return const reference to the JSON value pointed to by the JSON
+    pointer
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    const BasicJsonType& get_unchecked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" cannot be used for const access
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat("array index '-' (", std::to_string(ptr->m_data.m_value.array->size()), ") is out of range"), ptr));
+                    }
+
+                    // use unchecked array access
+                    ptr = &ptr->operator[](array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    const BasicJsonType& get_checked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
+                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
+                                ") is out of range"), ptr));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    */
+    template<typename BasicJsonType>
+    bool contains(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    if (!ptr->contains(reference_token))
+                    {
+                        // we did not find the key in the object
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() == 1 && !("0" <= reference_token && reference_token <= "9")))
+                    {
+                        // invalid char
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() > 1))
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!('1' <= reference_token[0] && reference_token[0] <= '9')))
+                        {
+                            // first char should be between '1' and '9'
+                            return false;
+                        }
+                        for (std::size_t i = 1; i < reference_token.size(); i++)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!('0' <= reference_token[i] && reference_token[i] <= '9')))
+                            {
+                                // other char should be between '0' and '9'
+                                return false;
+                            }
+                        }
+                    }
+
+                    const auto idx = array_index<BasicJsonType>(reference_token);
+                    if (idx >= ptr->size())
+                    {
+                        // index out of range
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](idx);
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                {
+                    // we do not expect primitive values if there is still a
+                    // reference token to process
+                    return false;
+                }
+            }
+        }
+
+        // no reference token left means we found a primitive value
+        return true;
+    }
+
+    /*!
+    @brief split the string input to reference tokens
+
+    @note This function is only called by the json_pointer constructor.
+          All exceptions below are documented there.
+
+    @throw parse_error.107  if the pointer is not empty or begins with '/'
+    @throw parse_error.108  if character '~' is not followed by '0' or '1'
+    */
+    static std::vector<string_t> split(const string_t& reference_string)
+    {
+        std::vector<string_t> result;
+
+        // special case: empty reference string -> no reference tokens
+        if (reference_string.empty())
+        {
+            return result;
+        }
+
+        // check if nonempty reference string begins with slash
+        if (JSON_HEDLEY_UNLIKELY(reference_string[0] != '/'))
+        {
+            JSON_THROW(detail::parse_error::create(107, 1, detail::concat("JSON pointer must be empty or begin with '/' - was: '", reference_string, "'"), nullptr));
+        }
+
+        // extract the reference tokens:
+        // - slash: position of the last read slash (or end of string)
+        // - start: position after the previous slash
+        for (
+            // search for the first slash after the first character
+            std::size_t slash = reference_string.find_first_of('/', 1),
+            // set the beginning of the first reference token
+            start = 1;
+            // we can stop if start == 0 (if slash == string_t::npos)
+            start != 0;
+            // set the beginning of the next reference token
+            // (will eventually be 0 if slash == string_t::npos)
+            start = (slash == string_t::npos) ? 0 : slash + 1,
+            // find next slash
+            slash = reference_string.find_first_of('/', start))
+        {
+            // use the text between the beginning of the reference token
+            // (start) and the last slash (slash).
+            auto reference_token = reference_string.substr(start, slash - start);
+
+            // check reference tokens are properly escaped
+            for (std::size_t pos = reference_token.find_first_of('~');
+                    pos != string_t::npos;
+                    pos = reference_token.find_first_of('~', pos + 1))
+            {
+                JSON_ASSERT(reference_token[pos] == '~');
+
+                // ~ must be followed by 0 or 1
+                if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 ||
+                                         (reference_token[pos + 1] != '0' &&
+                                          reference_token[pos + 1] != '1')))
+                {
+                    JSON_THROW(detail::parse_error::create(108, 0, "escape character '~' must be followed with '0' or '1'", nullptr));
+                }
+            }
+
+            // finally, store the reference token
+            detail::unescape(reference_token);
+            result.push_back(reference_token);
+        }
+
+        return result;
+    }
+
+  private:
+    /*!
+    @param[in] reference_string  the reference string to the current value
+    @param[in] value             the value to consider
+    @param[in,out] result        the result object to insert values to
+
+    @note Empty objects or arrays are flattened to `null`.
+    */
+    template<typename BasicJsonType>
+    static void flatten(const string_t& reference_string,
+                        const BasicJsonType& value,
+                        BasicJsonType& result)
+    {
+        switch (value.type())
+        {
+            case detail::value_t::array:
+            {
+                if (value.m_data.m_value.array->empty())
+                {
+                    // flatten empty array as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate array and use index as reference string
+                    for (std::size_t i = 0; i < value.m_data.m_value.array->size(); ++i)
+                    {
+                        flatten(detail::concat(reference_string, '/', std::to_string(i)),
+                                value.m_data.m_value.array->operator[](i), result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::object:
+            {
+                if (value.m_data.m_value.object->empty())
+                {
+                    // flatten empty object as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate object and use keys as reference string
+                    for (const auto& element : *value.m_data.m_value.object)
+                    {
+                        flatten(detail::concat(reference_string, '/', detail::escape(element.first)), element.second, result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::null:
+            case detail::value_t::string:
+            case detail::value_t::boolean:
+            case detail::value_t::number_integer:
+            case detail::value_t::number_unsigned:
+            case detail::value_t::number_float:
+            case detail::value_t::binary:
+            case detail::value_t::discarded:
+            default:
+            {
+                // add primitive value with its reference string
+                result[reference_string] = value;
+                break;
+            }
+        }
+    }
+
+    /*!
+    @param[in] value  flattened JSON
+
+    @return unflattened JSON
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.314  if value is not an object
+    @throw type_error.315  if object values are not primitive
+    @throw type_error.313  if value cannot be unflattened
+    */
+    template<typename BasicJsonType>
+    static BasicJsonType
+    unflatten(const BasicJsonType& value)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!value.is_object()))
+        {
+            JSON_THROW(detail::type_error::create(314, "only objects can be unflattened", &value));
+        }
+
+        BasicJsonType result;
+
+        // iterate the JSON object values
+        for (const auto& element : *value.m_data.m_value.object)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!element.second.is_primitive()))
+            {
+                JSON_THROW(detail::type_error::create(315, "values in object must be primitive", &element.second));
+            }
+
+            // assign value to reference pointed to by JSON pointer; Note that if
+            // the JSON pointer is "" (i.e., points to the whole value), function
+            // get_and_create returns a reference to result itself. An assignment
+            // will then create a primitive value.
+            json_pointer(element.first).get_and_create(result) = element.second;
+        }
+
+        return result;
+    }
+
+    // can't use conversion operator because of ambiguity
+    json_pointer<string_t> convert() const&
+    {
+        json_pointer<string_t> result;
+        result.reference_tokens = reference_tokens;
+        return result;
+    }
+
+    json_pointer<string_t> convert()&&
+    {
+        json_pointer<string_t> result;
+        result.reference_tokens = std::move(reference_tokens);
+        return result;
+    }
+
+  public:
+#if JSON_HAS_THREE_WAY_COMPARISON
+    /// @brief compares two JSON pointers for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeRhs>
+    bool operator==(const json_pointer<RefStringTypeRhs>& rhs) const noexcept
+    {
+        return reference_tokens == rhs.reference_tokens;
+    }
+
+    /// @brief compares JSON pointer and string for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer))
+    bool operator==(const string_t& rhs) const
+    {
+        return *this == json_pointer(rhs);
+    }
+
+    /// @brief 3-way compares two JSON pointers
+    template<typename RefStringTypeRhs>
+    std::strong_ordering operator<=>(const json_pointer<RefStringTypeRhs>& rhs) const noexcept // *NOPAD*
+    {
+        return  reference_tokens <=> rhs.reference_tokens; // *NOPAD*
+    }
+#else
+    /// @brief compares two JSON pointers for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+
+    /// @brief compares JSON pointer and string for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeLhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                           const StringType& rhs);
+
+    /// @brief compares string and JSON pointer for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeRhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const StringType& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs);
+
+    /// @brief compares two JSON pointers for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+
+    /// @brief compares JSON pointer and string for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeLhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                           const StringType& rhs);
+
+    /// @brief compares string and JSON pointer for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeRhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const StringType& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs);
+
+    /// @brief compares two JSON pointer for less-than
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
+                          const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+#endif
+
+  private:
+    /// the reference tokens
+    std::vector<string_t> reference_tokens;
+};
+
+#if !JSON_HAS_THREE_WAY_COMPARISON
+// functions cannot be defined inside class due to ODR violations
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return lhs.reference_tokens == rhs.reference_tokens;
+}
+
+template<typename RefStringTypeLhs,
+         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
+inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                       const StringType& rhs)
+{
+    return lhs == json_pointer<RefStringTypeLhs>(rhs);
+}
+
+template<typename RefStringTypeRhs,
+         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
+inline bool operator==(const StringType& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs)
+{
+    return json_pointer<RefStringTypeRhs>(lhs) == rhs;
+}
+
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeLhs,
+         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
+inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                       const StringType& rhs)
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeRhs,
+         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
+inline bool operator!=(const StringType& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs)
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
+                      const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return lhs.reference_tokens < rhs.reference_tokens;
+}
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/json_ref.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <initializer_list>
+#include <utility>
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename BasicJsonType>
+class json_ref
+{
+  public:
+    using value_type = BasicJsonType;
+
+    json_ref(value_type&& value)
+        : owned_value(std::move(value))
+    {}
+
+    json_ref(const value_type& value)
+        : value_ref(&value)
+    {}
+
+    json_ref(std::initializer_list<json_ref> init)
+        : owned_value(init)
+    {}
+
+    template <
+        class... Args,
+        enable_if_t<std::is_constructible<value_type, Args...>::value, int> = 0 >
+    json_ref(Args && ... args)
+        : owned_value(std::forward<Args>(args)...)
+    {}
+
+    // class should be movable only
+    json_ref(json_ref&&) noexcept = default;
+    json_ref(const json_ref&) = delete;
+    json_ref& operator=(const json_ref&) = delete;
+    json_ref& operator=(json_ref&&) = delete;
+    ~json_ref() = default;
+
+    value_type moved_or_copied() const
+    {
+        if (value_ref == nullptr)
+        {
+            return std::move(owned_value);
+        }
+        return *value_ref;
+    }
+
+    value_type const& operator*() const
+    {
+        return value_ref ? *value_ref : owned_value;
+    }
+
+    value_type const* operator->() const
+    {
+        return &** this;
+    }
+
+  private:
+    mutable value_type owned_value = nullptr;
+    value_type const* value_ref = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/string_escape.hpp>
+
+// #include <nlohmann/detail/string_utils.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/output/binary_writer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // reverse
+#include <array> // array
+#include <map> // map
+#include <cmath> // isnan, isinf
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstring> // memcpy
+#include <limits> // numeric_limits
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/input/binary_reader.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // copy
+#include <cstddef> // size_t
+#include <iterator> // back_inserter
+#include <memory> // shared_ptr, make_shared
+#include <string> // basic_string
+#include <vector> // vector
+
+#ifndef JSON_NO_IO
+    #include <ios>      // streamsize
+    #include <ostream>  // basic_ostream
+#endif  // JSON_NO_IO
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// abstract output adapter interface
+template<typename CharType> struct output_adapter_protocol
+{
+    virtual void write_character(CharType c) = 0;
+    virtual void write_characters(const CharType* s, std::size_t length) = 0;
+    virtual ~output_adapter_protocol() = default;
+
+    output_adapter_protocol() = default;
+    output_adapter_protocol(const output_adapter_protocol&) = default;
+    output_adapter_protocol(output_adapter_protocol&&) noexcept = default;
+    output_adapter_protocol& operator=(const output_adapter_protocol&) = default;
+    output_adapter_protocol& operator=(output_adapter_protocol&&) noexcept = default;
+};
+
+/// a type to simplify interfaces
+template<typename CharType>
+using output_adapter_t = std::shared_ptr<output_adapter_protocol<CharType>>;
+
+/// output adapter for byte vectors
+template<typename CharType, typename AllocatorType = std::allocator<CharType>>
+class output_vector_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_vector_adapter(std::vector<CharType, AllocatorType>& vec) noexcept
+        : v(vec)
+    {}
+
+    void write_character(CharType c) override
+    {
+        v.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        v.insert(v.end(), s, s + length);
+    }
+
+  private:
+    std::vector<CharType, AllocatorType>& v;
+};
+
+#ifndef JSON_NO_IO
+/// output adapter for output streams
+template<typename CharType>
+class output_stream_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_stream_adapter(std::basic_ostream<CharType>& s) noexcept
+        : stream(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        stream.put(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        stream.write(s, static_cast<std::streamsize>(length));
+    }
+
+  private:
+    std::basic_ostream<CharType>& stream;
+};
+#endif  // JSON_NO_IO
+
+/// output adapter for basic_string
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_string_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_string_adapter(StringType& s) noexcept
+        : str(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        str.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        str.append(s, length);
+    }
+
+  private:
+    StringType& str;
+};
+
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_adapter
+{
+  public:
+    template<typename AllocatorType = std::allocator<CharType>>
+    output_adapter(std::vector<CharType, AllocatorType>& vec)
+        : oa(std::make_shared<output_vector_adapter<CharType, AllocatorType>>(vec)) {}
+
+#ifndef JSON_NO_IO
+    output_adapter(std::basic_ostream<CharType>& s)
+        : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
+#endif  // JSON_NO_IO
+
+    output_adapter(StringType& s)
+        : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {}
+
+    operator output_adapter_t<CharType>()
+    {
+        return oa;
+    }
+
+  private:
+    output_adapter_t<CharType> oa = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////
+// binary writer //
+///////////////////
+
+/*!
+@brief serialization to CBOR and MessagePack values
+*/
+template<typename BasicJsonType, typename CharType>
+class binary_writer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+  public:
+    /*!
+    @brief create a binary writer
+
+    @param[in] adapter  output adapter to write to
+    */
+    explicit binary_writer(output_adapter_t<CharType> adapter) : oa(std::move(adapter))
+    {
+        JSON_ASSERT(oa);
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @pre       j.type() == value_t::object
+    */
+    void write_bson(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+            {
+                write_bson_object(*j.m_data.m_value.object);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::array:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                JSON_THROW(type_error::create(317, concat("to serialize to BSON, top-level type must be object, but is ", j.type_name()), &j));
+            }
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_cbor(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                oa->write_character(to_char_type(0xF6));
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                oa->write_character(j.m_data.m_value.boolean
+                                    ? to_char_type(0xF5)
+                                    : to_char_type(0xF4));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_data.m_value.number_integer >= 0)
+                {
+                    // CBOR does not differentiate between positive signed
+                    // integers and unsigned integers. Therefore, we used the
+                    // code from the value_t::number_unsigned case here.
+                    if (j.m_data.m_value.number_integer <= 0x17)
+                    {
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x18));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x19));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x1A));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x1B));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    // The conversions below encode the sign in the first
+                    // byte, and the value is converted to a positive number.
+                    const auto positive_number = -1 - j.m_data.m_value.number_integer;
+                    if (j.m_data.m_value.number_integer >= -24)
+                    {
+                        write_number(static_cast<std::uint8_t>(0x20 + positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x38));
+                        write_number(static_cast<std::uint8_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x39));
+                        write_number(static_cast<std::uint16_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x3A));
+                        write_number(static_cast<std::uint32_t>(positive_number));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x3B));
+                        write_number(static_cast<std::uint64_t>(positive_number));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x18));
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x19));
+                    write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x1A));
+                    write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_unsigned));
+                }
+                else
+                {
+                    oa->write_character(to_char_type(0x1B));
+                    write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_unsigned));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                if (std::isnan(j.m_data.m_value.number_float))
+                {
+                    // NaN is 0xf97e00 in CBOR
+                    oa->write_character(to_char_type(0xF9));
+                    oa->write_character(to_char_type(0x7E));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else if (std::isinf(j.m_data.m_value.number_float))
+                {
+                    // Infinity is 0xf97c00, -Infinity is 0xf9fc00
+                    oa->write_character(to_char_type(0xf9));
+                    oa->write_character(j.m_data.m_value.number_float > 0 ? to_char_type(0x7C) : to_char_type(0xFC));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else
+                {
+                    write_compact_float(j.m_data.m_value.number_float, detail::input_format_t::cbor);
+                }
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_data.m_value.string->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x60 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x78));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x79));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_data.m_value.array->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x80 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x98));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x99));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_cbor(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (j.m_data.m_value.binary->has_subtype())
+                {
+                    if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xd8));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xd9));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xda));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xdb));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                }
+
+                // step 1: write control byte and the binary array size
+                const auto N = j.m_data.m_value.binary->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x40 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x58));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x59));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_data.m_value.object->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0xA0 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB8));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB9));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBA));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBB));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_cbor(el.first);
+                    write_cbor(el.second);
+                }
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_msgpack(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null: // nil
+            {
+                oa->write_character(to_char_type(0xC0));
+                break;
+            }
+
+            case value_t::boolean: // true and false
+            {
+                oa->write_character(j.m_data.m_value.boolean
+                                    ? to_char_type(0xC3)
+                                    : to_char_type(0xC2));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_data.m_value.number_integer >= 0)
+                {
+                    // MessagePack does not differentiate between positive
+                    // signed integers and unsigned integers. Therefore, we used
+                    // the code from the value_t::number_unsigned case here.
+                    if (j.m_data.m_value.number_unsigned < 128)
+                    {
+                        // positive fixnum
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        // uint 8
+                        oa->write_character(to_char_type(0xCC));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        // uint 16
+                        oa->write_character(to_char_type(0xCD));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        // uint 32
+                        oa->write_character(to_char_type(0xCE));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        // uint 64
+                        oa->write_character(to_char_type(0xCF));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    if (j.m_data.m_value.number_integer >= -32)
+                    {
+                        // negative fixnum
+                        write_number(static_cast<std::int8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int8_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                    {
+                        // int 8
+                        oa->write_character(to_char_type(0xD0));
+                        write_number(static_cast<std::int8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int16_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                    {
+                        // int 16
+                        oa->write_character(to_char_type(0xD1));
+                        write_number(static_cast<std::int16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int32_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                    {
+                        // int 32
+                        oa->write_character(to_char_type(0xD2));
+                        write_number(static_cast<std::int32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int64_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                    {
+                        // int 64
+                        oa->write_character(to_char_type(0xD3));
+                        write_number(static_cast<std::int64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned < 128)
+                {
+                    // positive fixnum
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // uint 8
+                    oa->write_character(to_char_type(0xCC));
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // uint 16
+                    oa->write_character(to_char_type(0xCD));
+                    write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // uint 32
+                    oa->write_character(to_char_type(0xCE));
+                    write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    // uint 64
+                    oa->write_character(to_char_type(0xCF));
+                    write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_compact_float(j.m_data.m_value.number_float, detail::input_format_t::msgpack);
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_data.m_value.string->size();
+                if (N <= 31)
+                {
+                    // fixstr
+                    write_number(static_cast<std::uint8_t>(0xA0 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // str 8
+                    oa->write_character(to_char_type(0xD9));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // str 16
+                    oa->write_character(to_char_type(0xDA));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // str 32
+                    oa->write_character(to_char_type(0xDB));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_data.m_value.array->size();
+                if (N <= 15)
+                {
+                    // fixarray
+                    write_number(static_cast<std::uint8_t>(0x90 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // array 16
+                    oa->write_character(to_char_type(0xDC));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // array 32
+                    oa->write_character(to_char_type(0xDD));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_msgpack(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                // step 0: determine if the binary type has a set subtype to
+                // determine whether to use the ext or fixext types
+                const bool use_ext = j.m_data.m_value.binary->has_subtype();
+
+                // step 1: write control byte and the byte string length
+                const auto N = j.m_data.m_value.binary->size();
+                if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    std::uint8_t output_type{};
+                    bool fixed = true;
+                    if (use_ext)
+                    {
+                        switch (N)
+                        {
+                            case 1:
+                                output_type = 0xD4; // fixext 1
+                                break;
+                            case 2:
+                                output_type = 0xD5; // fixext 2
+                                break;
+                            case 4:
+                                output_type = 0xD6; // fixext 4
+                                break;
+                            case 8:
+                                output_type = 0xD7; // fixext 8
+                                break;
+                            case 16:
+                                output_type = 0xD8; // fixext 16
+                                break;
+                            default:
+                                output_type = 0xC7; // ext 8
+                                fixed = false;
+                                break;
+                        }
+
+                    }
+                    else
+                    {
+                        output_type = 0xC4; // bin 8
+                        fixed = false;
+                    }
+
+                    oa->write_character(to_char_type(output_type));
+                    if (!fixed)
+                    {
+                        write_number(static_cast<std::uint8_t>(N));
+                    }
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    const std::uint8_t output_type = use_ext
+                                                     ? 0xC8 // ext 16
+                                                     : 0xC5; // bin 16
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    const std::uint8_t output_type = use_ext
+                                                     ? 0xC9 // ext 32
+                                                     : 0xC6; // bin 32
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 1.5: if this is an ext type, write the subtype
+                if (use_ext)
+                {
+                    write_number(static_cast<std::int8_t>(j.m_data.m_value.binary->subtype()));
+                }
+
+                // step 2: write the byte string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_data.m_value.object->size();
+                if (N <= 15)
+                {
+                    // fixmap
+                    write_number(static_cast<std::uint8_t>(0x80 | (N & 0xF)));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // map 16
+                    oa->write_character(to_char_type(0xDE));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // map 32
+                    oa->write_character(to_char_type(0xDF));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_msgpack(el.first);
+                    write_msgpack(el.second);
+                }
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @param[in] use_count   whether to use '#' prefixes (optimized format)
+    @param[in] use_type    whether to use '$' prefixes (optimized format)
+    @param[in] add_prefix  whether prefixes need to be used for this value
+    @param[in] use_bjdata  whether write in BJData format, default is false
+    */
+    void write_ubjson(const BasicJsonType& j, const bool use_count,
+                      const bool use_type, const bool add_prefix = true,
+                      const bool use_bjdata = false)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('Z'));
+                }
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(j.m_data.m_value.boolean
+                                        ? to_char_type('T')
+                                        : to_char_type('F'));
+                }
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_integer, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_unsigned, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_float, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::string:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('S'));
+                }
+                write_number_with_ubjson_prefix(j.m_data.m_value.string->size(), true, use_bjdata);
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_data.m_value.array->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
+                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(),
+                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v, use_bjdata) == first_prefix;
+                    });
+
+                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
+
+                    if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.array->size(), true, use_bjdata);
+                }
+
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_ubjson(el, use_count, use_type, prefix_required, use_bjdata);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                if (use_type && !j.m_data.m_value.binary->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    oa->write_character(to_char_type('$'));
+                    oa->write_character('U');
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.binary->size(), true, use_bjdata);
+                }
+
+                if (use_type)
+                {
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                        j.m_data.m_value.binary->size());
+                }
+                else
+                {
+                    for (size_t i = 0; i < j.m_data.m_value.binary->size(); ++i)
+                    {
+                        oa->write_character(to_char_type('U'));
+                        oa->write_character(j.m_data.m_value.binary->data()[i]);
+                    }
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                if (use_bjdata && j.m_data.m_value.object->size() == 3 && j.m_data.m_value.object->find("_ArrayType_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArraySize_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArrayData_") != j.m_data.m_value.object->end())
+                {
+                    if (!write_bjdata_ndarray(*j.m_data.m_value.object, use_count, use_type))  // decode bjdata ndarray in the JData format (https://github.com/NeuroJSON/jdata)
+                    {
+                        break;
+                    }
+                }
+
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('{'));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_data.m_value.object->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
+                    const bool same_prefix = std::all_of(j.begin(), j.end(),
+                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v, use_bjdata) == first_prefix;
+                    });
+
+                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
+
+                    if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.object->size(), true, use_bjdata);
+                }
+
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_number_with_ubjson_prefix(el.first.size(), true, use_bjdata);
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(el.first.c_str()),
+                        el.first.size());
+                    write_ubjson(el.second, use_count, use_type, prefix_required, use_bjdata);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type('}'));
+                }
+
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @return The size of a BSON document entry header, including the id marker
+            and the entry name size (and its null-terminator).
+    */
+    static std::size_t calc_bson_entry_header_size(const string_t& name, const BasicJsonType& j)
+    {
+        const auto it = name.find(static_cast<typename string_t::value_type>(0));
+        if (JSON_HEDLEY_UNLIKELY(it != BasicJsonType::string_t::npos))
+        {
+            JSON_THROW(out_of_range::create(409, concat("BSON key cannot contain code point U+0000 (at byte ", std::to_string(it), ")"), &j));
+            static_cast<void>(j);
+        }
+
+        return /*id*/ 1ul + name.size() + /*zero-terminator*/1u;
+    }
+
+    /*!
+    @brief Writes the given @a element_type and @a name to the output adapter
+    */
+    void write_bson_entry_header(const string_t& name,
+                                 const std::uint8_t element_type)
+    {
+        oa->write_character(to_char_type(element_type)); // boolean
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(name.c_str()),
+            name.size() + 1u);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and boolean value @a value
+    */
+    void write_bson_boolean(const string_t& name,
+                            const bool value)
+    {
+        write_bson_entry_header(name, 0x08);
+        oa->write_character(value ? to_char_type(0x01) : to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and double value @a value
+    */
+    void write_bson_double(const string_t& name,
+                           const double value)
+    {
+        write_bson_entry_header(name, 0x01);
+        write_number<double>(value, true);
+    }
+
+    /*!
+    @return The size of the BSON-encoded string in @a value
+    */
+    static std::size_t calc_bson_string_size(const string_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and string value @a value
+    */
+    void write_bson_string(const string_t& name,
+                           const string_t& value)
+    {
+        write_bson_entry_header(name, 0x02);
+
+        write_number<std::int32_t>(static_cast<std::int32_t>(value.size() + 1ul), true);
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(value.c_str()),
+            value.size() + 1);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and null value
+    */
+    void write_bson_null(const string_t& name)
+    {
+        write_bson_entry_header(name, 0x0A);
+    }
+
+    /*!
+    @return The size of the BSON-encoded integer @a value
+    */
+    static std::size_t calc_bson_integer_size(const std::int64_t value)
+    {
+        return (std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)()
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and integer @a value
+    */
+    void write_bson_integer(const string_t& name,
+                            const std::int64_t value)
+    {
+        if ((std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            write_bson_entry_header(name, 0x10); // int32
+            write_number<std::int32_t>(static_cast<std::int32_t>(value), true);
+        }
+        else
+        {
+            write_bson_entry_header(name, 0x12); // int64
+            write_number<std::int64_t>(static_cast<std::int64_t>(value), true);
+        }
+    }
+
+    /*!
+    @return The size of the BSON-encoded unsigned integer in @a j
+    */
+    static constexpr std::size_t calc_bson_unsigned_size(const std::uint64_t value) noexcept
+    {
+        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and unsigned @a value
+    */
+    void write_bson_unsigned(const string_t& name,
+                             const BasicJsonType& j)
+    {
+        if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x10 /* int32 */);
+            write_number<std::int32_t>(static_cast<std::int32_t>(j.m_data.m_value.number_unsigned), true);
+        }
+        else if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x12 /* int64 */);
+            write_number<std::int64_t>(static_cast<std::int64_t>(j.m_data.m_value.number_unsigned), true);
+        }
+        else
+        {
+            JSON_THROW(out_of_range::create(407, concat("integer number ", std::to_string(j.m_data.m_value.number_unsigned), " cannot be represented by BSON as it does not fit int64"), &j));
+        }
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and object @a value
+    */
+    void write_bson_object_entry(const string_t& name,
+                                 const typename BasicJsonType::object_t& value)
+    {
+        write_bson_entry_header(name, 0x03); // object
+        write_bson_object(value);
+    }
+
+    /*!
+    @return The size of the BSON-encoded array @a value
+    */
+    static std::size_t calc_bson_array_size(const typename BasicJsonType::array_t& value)
+    {
+        std::size_t array_index = 0ul;
+
+        const std::size_t embedded_document_size = std::accumulate(std::begin(value), std::end(value), static_cast<std::size_t>(0), [&array_index](std::size_t result, const typename BasicJsonType::array_t::value_type & el)
+        {
+            return result + calc_bson_element_size(std::to_string(array_index++), el);
+        });
+
+        return sizeof(std::int32_t) + embedded_document_size + 1ul;
+    }
+
+    /*!
+    @return The size of the BSON-encoded binary array @a value
+    */
+    static std::size_t calc_bson_binary_size(const typename BasicJsonType::binary_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and array @a value
+    */
+    void write_bson_array(const string_t& name,
+                          const typename BasicJsonType::array_t& value)
+    {
+        write_bson_entry_header(name, 0x04); // array
+        write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_array_size(value)), true);
+
+        std::size_t array_index = 0ul;
+
+        for (const auto& el : value)
+        {
+            write_bson_element(std::to_string(array_index++), el);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and binary value @a value
+    */
+    void write_bson_binary(const string_t& name,
+                           const binary_t& value)
+    {
+        write_bson_entry_header(name, 0x05);
+
+        write_number<std::int32_t>(static_cast<std::int32_t>(value.size()), true);
+        write_number(value.has_subtype() ? static_cast<std::uint8_t>(value.subtype()) : static_cast<std::uint8_t>(0x00));
+
+        oa->write_characters(reinterpret_cast<const CharType*>(value.data()), value.size());
+    }
+
+    /*!
+    @brief Calculates the size necessary to serialize the JSON value @a j with its @a name
+    @return The calculated size for the BSON document entry for @a j with the given @a name.
+    */
+    static std::size_t calc_bson_element_size(const string_t& name,
+            const BasicJsonType& j)
+    {
+        const auto header_size = calc_bson_entry_header_size(name, j);
+        switch (j.type())
+        {
+            case value_t::object:
+                return header_size + calc_bson_object_size(*j.m_data.m_value.object);
+
+            case value_t::array:
+                return header_size + calc_bson_array_size(*j.m_data.m_value.array);
+
+            case value_t::binary:
+                return header_size + calc_bson_binary_size(*j.m_data.m_value.binary);
+
+            case value_t::boolean:
+                return header_size + 1ul;
+
+            case value_t::number_float:
+                return header_size + 8ul;
+
+            case value_t::number_integer:
+                return header_size + calc_bson_integer_size(j.m_data.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return header_size + calc_bson_unsigned_size(j.m_data.m_value.number_unsigned);
+
+            case value_t::string:
+                return header_size + calc_bson_string_size(*j.m_data.m_value.string);
+
+            case value_t::null:
+                return header_size + 0ul;
+
+            // LCOV_EXCL_START
+            case value_t::discarded:
+            default:
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
+                return 0ul;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Serializes the JSON value @a j to BSON and associates it with the
+           key @a name.
+    @param name The name to associate with the JSON entity @a j within the
+                current BSON document
+    */
+    void write_bson_element(const string_t& name,
+                            const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+                return write_bson_object_entry(name, *j.m_data.m_value.object);
+
+            case value_t::array:
+                return write_bson_array(name, *j.m_data.m_value.array);
+
+            case value_t::binary:
+                return write_bson_binary(name, *j.m_data.m_value.binary);
+
+            case value_t::boolean:
+                return write_bson_boolean(name, j.m_data.m_value.boolean);
+
+            case value_t::number_float:
+                return write_bson_double(name, j.m_data.m_value.number_float);
+
+            case value_t::number_integer:
+                return write_bson_integer(name, j.m_data.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return write_bson_unsigned(name, j);
+
+            case value_t::string:
+                return write_bson_string(name, *j.m_data.m_value.string);
+
+            case value_t::null:
+                return write_bson_null(name);
+
+            // LCOV_EXCL_START
+            case value_t::discarded:
+            default:
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
+                return;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Calculates the size of the BSON serialization of the given
+           JSON-object @a j.
+    @param[in] value  JSON value to serialize
+    @pre       value.type() == value_t::object
+    */
+    static std::size_t calc_bson_object_size(const typename BasicJsonType::object_t& value)
+    {
+        const std::size_t document_size = std::accumulate(value.begin(), value.end(), static_cast<std::size_t>(0),
+                                          [](size_t result, const typename BasicJsonType::object_t::value_type & el)
+        {
+            return result += calc_bson_element_size(el.first, el.second);
+        });
+
+        return sizeof(std::int32_t) + document_size + 1ul;
+    }
+
+    /*!
+    @param[in] value  JSON value to serialize
+    @pre       value.type() == value_t::object
+    */
+    void write_bson_object(const typename BasicJsonType::object_t& value)
+    {
+        write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_object_size(value)), true);
+
+        for (const auto& el : value)
+        {
+            write_bson_element(el.first, el.second);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    static constexpr CharType get_cbor_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xFA);  // Single-Precision Float
+    }
+
+    static constexpr CharType get_cbor_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xFB);  // Double-Precision Float
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    static constexpr CharType get_msgpack_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xCA);  // float 32
+    }
+
+    static constexpr CharType get_msgpack_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xCB);  // float 64
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    // UBJSON: write number (floating point)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_floating_point<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if (add_prefix)
+        {
+            oa->write_character(get_ubjson_float_prefix(n));
+        }
+        write_number(n, use_bjdata);
+    }
+
+    // UBJSON: write number (unsigned integer)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_unsigned<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if (n <= (std::numeric_limits<std::uint8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= static_cast<uint64_t>((std::numeric_limits<uint16_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('u'));  // uint16 - bjdata only
+            }
+            write_number(static_cast<std::uint16_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= static_cast<uint64_t>((std::numeric_limits<uint32_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('m'));  // uint32 - bjdata only
+            }
+            write_number(static_cast<std::uint32_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= (std::numeric_limits<uint64_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('M'));  // uint64 - bjdata only
+            }
+            write_number(static_cast<std::uint64_t>(n), use_bjdata);
+        }
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true, use_bjdata);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+    }
+
+    // UBJSON: write number (signed integer)
+    template < typename NumberType, typename std::enable_if <
+                   std::is_signed<NumberType>::value&&
+                   !std::is_floating_point<NumberType>::value, int >::type = 0 >
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if ((std::numeric_limits<std::int8_t>::min)() <= n && n <= (std::numeric_limits<std::int8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::int8_t>(n), use_bjdata);
+        }
+        else if (static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int16_t>::min)() <= n && n <= (std::numeric_limits<std::int16_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::max)())))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('u'));  // uint16 - bjdata only
+            }
+            write_number(static_cast<uint16_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int32_t>::min)() <= n && n <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::max)())))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('m'));  // uint32 - bjdata only
+            }
+            write_number(static_cast<uint32_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int64_t>::min)() <= n && n <= (std::numeric_limits<std::int64_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n), use_bjdata);
+        }
+        // LCOV_EXCL_START
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true, use_bjdata);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+        // LCOV_EXCL_STOP
+    }
+
+    /*!
+    @brief determine the type prefix of container values
+    */
+    CharType ubjson_prefix(const BasicJsonType& j, const bool use_bjdata) const noexcept
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+                return 'Z';
+
+            case value_t::boolean:
+                return j.m_data.m_value.boolean ? 'T' : 'F';
+
+            case value_t::number_integer:
+            {
+                if ((std::numeric_limits<std::int8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                {
+                    return 'i';
+                }
+                if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    return 'U';
+                }
+                if ((std::numeric_limits<std::int16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                {
+                    return 'I';
+                }
+                if (use_bjdata && ((std::numeric_limits<std::uint16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)()))
+                {
+                    return 'u';
+                }
+                if ((std::numeric_limits<std::int32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                {
+                    return 'l';
+                }
+                if (use_bjdata && ((std::numeric_limits<std::uint32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)()))
+                {
+                    return 'm';
+                }
+                if ((std::numeric_limits<std::int64_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                {
+                    return 'L';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+                {
+                    return 'i';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint8_t>::max)()))
+                {
+                    return 'U';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+                {
+                    return 'I';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint16_t>::max)()))
+                {
+                    return 'u';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+                {
+                    return 'l';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint32_t>::max)()))
+                {
+                    return 'm';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+                {
+                    return 'L';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    return 'M';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_float:
+                return get_ubjson_float_prefix(j.m_data.m_value.number_float);
+
+            case value_t::string:
+                return 'S';
+
+            case value_t::array: // fallthrough
+            case value_t::binary:
+                return '[';
+
+            case value_t::object:
+                return '{';
+
+            case value_t::discarded:
+            default:  // discarded values
+                return 'N';
+        }
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(float /*unused*/)
+    {
+        return 'd';  // float 32
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(double /*unused*/)
+    {
+        return 'D';  // float 64
+    }
+
+    /*!
+    @return false if the object is successfully converted to a bjdata ndarray, true if the type or size is invalid
+    */
+    bool write_bjdata_ndarray(const typename BasicJsonType::object_t& value, const bool use_count, const bool use_type)
+    {
+        std::map<string_t, CharType> bjdtype = {{"uint8", 'U'},  {"int8", 'i'},  {"uint16", 'u'}, {"int16", 'I'},
+            {"uint32", 'm'}, {"int32", 'l'}, {"uint64", 'M'}, {"int64", 'L'}, {"single", 'd'}, {"double", 'D'}, {"char", 'C'}
+        };
+
+        string_t key = "_ArrayType_";
+        auto it = bjdtype.find(static_cast<string_t>(value.at(key)));
+        if (it == bjdtype.end())
+        {
+            return true;
+        }
+        CharType dtype = it->second;
+
+        key = "_ArraySize_";
+        std::size_t len = (value.at(key).empty() ? 0 : 1);
+        for (const auto& el : value.at(key))
+        {
+            len *= static_cast<std::size_t>(el.m_data.m_value.number_unsigned);
+        }
+
+        key = "_ArrayData_";
+        if (value.at(key).size() != len)
+        {
+            return true;
+        }
+
+        oa->write_character('[');
+        oa->write_character('$');
+        oa->write_character(dtype);
+        oa->write_character('#');
+
+        key = "_ArraySize_";
+        write_ubjson(value.at(key), use_count, use_type, true,  true);
+
+        key = "_ArrayData_";
+        if (dtype == 'U' || dtype == 'C')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint8_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'i')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int8_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'u')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint16_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'I')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int16_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'm')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint32_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'l')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int32_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'M')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint64_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'L')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int64_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'd')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<float>(el.m_data.m_value.number_float), true);
+            }
+        }
+        else if (dtype == 'D')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<double>(el.m_data.m_value.number_float), true);
+            }
+        }
+        return false;
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*
+    @brief write a number to output input
+    @param[in] n number of type @a NumberType
+    @param[in] OutputIsLittleEndian Set to true if output data is
+                                 required to be little endian
+    @tparam NumberType the type of the number
+
+    @note This function needs to respect the system's endianness, because bytes
+          in CBOR, MessagePack, and UBJSON are stored in network order (big
+          endian) and therefore need reordering on little endian systems.
+          On the other hand, BSON and BJData use little endian and should reorder
+          on big endian systems.
+    */
+    template<typename NumberType>
+    void write_number(const NumberType n, const bool OutputIsLittleEndian = false)
+    {
+        // step 1: write number to array of length NumberType
+        std::array<CharType, sizeof(NumberType)> vec{};
+        std::memcpy(vec.data(), &n, sizeof(NumberType));
+
+        // step 2: write array to output (with possible reordering)
+        if (is_little_endian != OutputIsLittleEndian)
+        {
+            // reverse byte order prior to conversion if necessary
+            std::reverse(vec.begin(), vec.end());
+        }
+
+        oa->write_characters(vec.data(), sizeof(NumberType));
+    }
+
+    void write_compact_float(const number_float_t n, detail::input_format_t format)
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        if (static_cast<double>(n) >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
+                static_cast<double>(n) <= static_cast<double>((std::numeric_limits<float>::max)()) &&
+                static_cast<double>(static_cast<float>(n)) == static_cast<double>(n))
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(static_cast<float>(n))
+                                : get_msgpack_float_prefix(static_cast<float>(n)));
+            write_number(static_cast<float>(n));
+        }
+        else
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(n)
+                                : get_msgpack_float_prefix(n));
+            write_number(n);
+        }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+  public:
+    // The following to_char_type functions are implement the conversion
+    // between uint8_t and CharType. In case CharType is not unsigned,
+    // such a conversion is required to allow values greater than 128.
+    // See <https://github.com/nlohmann/json/issues/1286> for a discussion.
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_signed<char>::value > * = nullptr >
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return *reinterpret_cast<char*>(&x);
+    }
+
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_unsigned<char>::value > * = nullptr >
+    static CharType to_char_type(std::uint8_t x) noexcept
+    {
+        static_assert(sizeof(std::uint8_t) == sizeof(CharType), "size of CharType must be equal to std::uint8_t");
+        static_assert(std::is_trivial<CharType>::value, "CharType must be trivial");
+        CharType result;
+        std::memcpy(&result, &x, sizeof(x));
+        return result;
+    }
+
+    template<typename C = CharType,
+             enable_if_t<std::is_unsigned<C>::value>* = nullptr>
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return x;
+    }
+
+    template < typename InputCharType, typename C = CharType,
+               enable_if_t <
+                   std::is_signed<C>::value &&
+                   std::is_signed<char>::value &&
+                   std::is_same<char, typename std::remove_cv<InputCharType>::type>::value
+                   > * = nullptr >
+    static constexpr CharType to_char_type(InputCharType x) noexcept
+    {
+        return x;
+    }
+
+  private:
+    /// whether we can assume little endianness
+    const bool is_little_endian = little_endianness();
+
+    /// the output
+    output_adapter_t<CharType> oa = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+// #include <nlohmann/detail/output/serializer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2008 - 2009 Björn Hoehrmann <bjoern@hoehrmann.de>
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // reverse, remove, fill, find, none_of
+#include <array> // array
+#include <clocale> // localeconv, lconv
+#include <cmath> // labs, isfinite, isnan, signbit
+#include <cstddef> // size_t, ptrdiff_t
+#include <cstdint> // uint8_t
+#include <cstdio> // snprintf
+#include <limits> // numeric_limits
+#include <string> // string, char_traits
+#include <iomanip> // setfill, setw
+#include <type_traits> // is_same
+#include <utility> // move
+
+// #include <nlohmann/detail/conversions/to_chars.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2009 Florian Loitsch <https://florian.loitsch.com/>
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <cmath>   // signbit, isfinite
+#include <cstdint> // intN_t, uintN_t
+#include <cstring> // memcpy, memmove
+#include <limits> // numeric_limits
+#include <type_traits> // conditional
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief implements the Grisu2 algorithm for binary to decimal floating-point
+conversion.
+
+This implementation is a slightly modified version of the reference
+implementation which may be obtained from
+http://florian.loitsch.com/publications (bench.tar.gz).
+
+The code is distributed under the MIT license, Copyright (c) 2009 Florian Loitsch.
+
+For a detailed description of the algorithm see:
+
+[1] Loitsch, "Printing Floating-Point Numbers Quickly and Accurately with
+    Integers", Proceedings of the ACM SIGPLAN 2010 Conference on Programming
+    Language Design and Implementation, PLDI 2010
+[2] Burger, Dybvig, "Printing Floating-Point Numbers Quickly and Accurately",
+    Proceedings of the ACM SIGPLAN 1996 Conference on Programming Language
+    Design and Implementation, PLDI 1996
+*/
+namespace dtoa_impl
+{
+
+template<typename Target, typename Source>
+Target reinterpret_bits(const Source source)
+{
+    static_assert(sizeof(Target) == sizeof(Source), "size mismatch");
+
+    Target target;
+    std::memcpy(&target, &source, sizeof(Source));
+    return target;
+}
+
+struct diyfp // f * 2^e
+{
+    static constexpr int kPrecision = 64; // = q
+
+    std::uint64_t f = 0;
+    int e = 0;
+
+    constexpr diyfp(std::uint64_t f_, int e_) noexcept : f(f_), e(e_) {}
+
+    /*!
+    @brief returns x - y
+    @pre x.e == y.e and x.f >= y.f
+    */
+    static diyfp sub(const diyfp& x, const diyfp& y) noexcept
+    {
+        JSON_ASSERT(x.e == y.e);
+        JSON_ASSERT(x.f >= y.f);
+
+        return {x.f - y.f, x.e};
+    }
+
+    /*!
+    @brief returns x * y
+    @note The result is rounded. (Only the upper q bits are returned.)
+    */
+    static diyfp mul(const diyfp& x, const diyfp& y) noexcept
+    {
+        static_assert(kPrecision == 64, "internal error");
+
+        // Computes:
+        //  f = round((x.f * y.f) / 2^q)
+        //  e = x.e + y.e + q
+
+        // Emulate the 64-bit * 64-bit multiplication:
+        //
+        // p = u * v
+        //   = (u_lo + 2^32 u_hi) (v_lo + 2^32 v_hi)
+        //   = (u_lo v_lo         ) + 2^32 ((u_lo v_hi         ) + (u_hi v_lo         )) + 2^64 (u_hi v_hi         )
+        //   = (p0                ) + 2^32 ((p1                ) + (p2                )) + 2^64 (p3                )
+        //   = (p0_lo + 2^32 p0_hi) + 2^32 ((p1_lo + 2^32 p1_hi) + (p2_lo + 2^32 p2_hi)) + 2^64 (p3                )
+        //   = (p0_lo             ) + 2^32 (p0_hi + p1_lo + p2_lo                      ) + 2^64 (p1_hi + p2_hi + p3)
+        //   = (p0_lo             ) + 2^32 (Q                                          ) + 2^64 (H                 )
+        //   = (p0_lo             ) + 2^32 (Q_lo + 2^32 Q_hi                           ) + 2^64 (H                 )
+        //
+        // (Since Q might be larger than 2^32 - 1)
+        //
+        //   = (p0_lo + 2^32 Q_lo) + 2^64 (Q_hi + H)
+        //
+        // (Q_hi + H does not overflow a 64-bit int)
+        //
+        //   = p_lo + 2^64 p_hi
+
+        const std::uint64_t u_lo = x.f & 0xFFFFFFFFu;
+        const std::uint64_t u_hi = x.f >> 32u;
+        const std::uint64_t v_lo = y.f & 0xFFFFFFFFu;
+        const std::uint64_t v_hi = y.f >> 32u;
+
+        const std::uint64_t p0 = u_lo * v_lo;
+        const std::uint64_t p1 = u_lo * v_hi;
+        const std::uint64_t p2 = u_hi * v_lo;
+        const std::uint64_t p3 = u_hi * v_hi;
+
+        const std::uint64_t p0_hi = p0 >> 32u;
+        const std::uint64_t p1_lo = p1 & 0xFFFFFFFFu;
+        const std::uint64_t p1_hi = p1 >> 32u;
+        const std::uint64_t p2_lo = p2 & 0xFFFFFFFFu;
+        const std::uint64_t p2_hi = p2 >> 32u;
+
+        std::uint64_t Q = p0_hi + p1_lo + p2_lo;
+
+        // The full product might now be computed as
+        //
+        // p_hi = p3 + p2_hi + p1_hi + (Q >> 32)
+        // p_lo = p0_lo + (Q << 32)
+        //
+        // But in this particular case here, the full p_lo is not required.
+        // Effectively we only need to add the highest bit in p_lo to p_hi (and
+        // Q_hi + 1 does not overflow).
+
+        Q += std::uint64_t{1} << (64u - 32u - 1u); // round, ties up
+
+        const std::uint64_t h = p3 + p2_hi + p1_hi + (Q >> 32u);
+
+        return {h, x.e + y.e + 64};
+    }
+
+    /*!
+    @brief normalize x such that the significand is >= 2^(q-1)
+    @pre x.f != 0
+    */
+    static diyfp normalize(diyfp x) noexcept
+    {
+        JSON_ASSERT(x.f != 0);
+
+        while ((x.f >> 63u) == 0)
+        {
+            x.f <<= 1u;
+            x.e--;
+        }
+
+        return x;
+    }
+
+    /*!
+    @brief normalize x such that the result has the exponent E
+    @pre e >= x.e and the upper e - x.e bits of x.f must be zero.
+    */
+    static diyfp normalize_to(const diyfp& x, const int target_exponent) noexcept
+    {
+        const int delta = x.e - target_exponent;
+
+        JSON_ASSERT(delta >= 0);
+        JSON_ASSERT(((x.f << delta) >> delta) == x.f);
+
+        return {x.f << delta, target_exponent};
+    }
+};
+
+struct boundaries
+{
+    diyfp w;
+    diyfp minus;
+    diyfp plus;
+};
+
+/*!
+Compute the (normalized) diyfp representing the input number 'value' and its
+boundaries.
+
+@pre value must be finite and positive
+*/
+template<typename FloatType>
+boundaries compute_boundaries(FloatType value)
+{
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // Convert the IEEE representation into a diyfp.
+    //
+    // If v is denormal:
+    //      value = 0.F * 2^(1 - bias) = (          F) * 2^(1 - bias - (p-1))
+    // If v is normalized:
+    //      value = 1.F * 2^(E - bias) = (2^(p-1) + F) * 2^(E - bias - (p-1))
+
+    static_assert(std::numeric_limits<FloatType>::is_iec559,
+                  "internal error: dtoa_short requires an IEEE-754 floating-point implementation");
+
+    constexpr int      kPrecision = std::numeric_limits<FloatType>::digits; // = p (includes the hidden bit)
+    constexpr int      kBias      = std::numeric_limits<FloatType>::max_exponent - 1 + (kPrecision - 1);
+    constexpr int      kMinExp    = 1 - kBias;
+    constexpr std::uint64_t kHiddenBit = std::uint64_t{1} << (kPrecision - 1); // = 2^(p-1)
+
+    using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t >::type;
+
+    const auto bits = static_cast<std::uint64_t>(reinterpret_bits<bits_type>(value));
+    const std::uint64_t E = bits >> (kPrecision - 1);
+    const std::uint64_t F = bits & (kHiddenBit - 1);
+
+    const bool is_denormal = E == 0;
+    const diyfp v = is_denormal
+                    ? diyfp(F, kMinExp)
+                    : diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
+
+    // Compute the boundaries m- and m+ of the floating-point value
+    // v = f * 2^e.
+    //
+    // Determine v- and v+, the floating-point predecessor and successor if v,
+    // respectively.
+    //
+    //      v- = v - 2^e        if f != 2^(p-1) or e == e_min                (A)
+    //         = v - 2^(e-1)    if f == 2^(p-1) and e > e_min                (B)
+    //
+    //      v+ = v + 2^e
+    //
+    // Let m- = (v- + v) / 2 and m+ = (v + v+) / 2. All real numbers _strictly_
+    // between m- and m+ round to v, regardless of how the input rounding
+    // algorithm breaks ties.
+    //
+    //      ---+-------------+-------------+-------------+-------------+---  (A)
+    //         v-            m-            v             m+            v+
+    //
+    //      -----------------+------+------+-------------+-------------+---  (B)
+    //                       v-     m-     v             m+            v+
+
+    const bool lower_boundary_is_closer = F == 0 && E > 1;
+    const diyfp m_plus = diyfp((2 * v.f) + 1, v.e - 1);
+    const diyfp m_minus = lower_boundary_is_closer
+                          ? diyfp((4 * v.f) - 1, v.e - 2)  // (B)
+                          : diyfp((2 * v.f) - 1, v.e - 1); // (A)
+
+    // Determine the normalized w+ = m+.
+    const diyfp w_plus = diyfp::normalize(m_plus);
+
+    // Determine w- = m- such that e_(w-) = e_(w+).
+    const diyfp w_minus = diyfp::normalize_to(m_minus, w_plus.e);
+
+    return {diyfp::normalize(v), w_minus, w_plus};
+}
+
+// Given normalized diyfp w, Grisu needs to find a (normalized) cached
+// power-of-ten c, such that the exponent of the product c * w = f * 2^e lies
+// within a certain range [alpha, gamma] (Definition 3.2 from [1])
+//
+//      alpha <= e = e_c + e_w + q <= gamma
+//
+// or
+//
+//      f_c * f_w * 2^alpha <= f_c 2^(e_c) * f_w 2^(e_w) * 2^q
+//                          <= f_c * f_w * 2^gamma
+//
+// Since c and w are normalized, i.e. 2^(q-1) <= f < 2^q, this implies
+//
+//      2^(q-1) * 2^(q-1) * 2^alpha <= c * w * 2^q < 2^q * 2^q * 2^gamma
+//
+// or
+//
+//      2^(q - 2 + alpha) <= c * w < 2^(q + gamma)
+//
+// The choice of (alpha,gamma) determines the size of the table and the form of
+// the digit generation procedure. Using (alpha,gamma)=(-60,-32) works out well
+// in practice:
+//
+// The idea is to cut the number c * w = f * 2^e into two parts, which can be
+// processed independently: An integral part p1, and a fractional part p2:
+//
+//      f * 2^e = ( (f div 2^-e) * 2^-e + (f mod 2^-e) ) * 2^e
+//              = (f div 2^-e) + (f mod 2^-e) * 2^e
+//              = p1 + p2 * 2^e
+//
+// The conversion of p1 into decimal form requires a series of divisions and
+// modulos by (a power of) 10. These operations are faster for 32-bit than for
+// 64-bit integers, so p1 should ideally fit into a 32-bit integer. This can be
+// achieved by choosing
+//
+//      -e >= 32   or   e <= -32 := gamma
+//
+// In order to convert the fractional part
+//
+//      p2 * 2^e = p2 / 2^-e = d[-1] / 10^1 + d[-2] / 10^2 + ...
+//
+// into decimal form, the fraction is repeatedly multiplied by 10 and the digits
+// d[-i] are extracted in order:
+//
+//      (10 * p2) div 2^-e = d[-1]
+//      (10 * p2) mod 2^-e = d[-2] / 10^1 + ...
+//
+// The multiplication by 10 must not overflow. It is sufficient to choose
+//
+//      10 * p2 < 16 * p2 = 2^4 * p2 <= 2^64.
+//
+// Since p2 = f mod 2^-e < 2^-e,
+//
+//      -e <= 60   or   e >= -60 := alpha
+
+constexpr int kAlpha = -60;
+constexpr int kGamma = -32;
+
+struct cached_power // c = f * 2^e ~= 10^k
+{
+    std::uint64_t f;
+    int e;
+    int k;
+};
+
+/*!
+For a normalized diyfp w = f * 2^e, this function returns a (normalized) cached
+power-of-ten c = f_c * 2^e_c, such that the exponent of the product w * c
+satisfies (Definition 3.2 from [1])
+
+     alpha <= e_c + e + q <= gamma.
+*/
+inline cached_power get_cached_power_for_binary_exponent(int e)
+{
+    // Now
+    //
+    //      alpha <= e_c + e + q <= gamma                                    (1)
+    //      ==> f_c * 2^alpha <= c * 2^e * 2^q
+    //
+    // and since the c's are normalized, 2^(q-1) <= f_c,
+    //
+    //      ==> 2^(q - 1 + alpha) <= c * 2^(e + q)
+    //      ==> 2^(alpha - e - 1) <= c
+    //
+    // If c were an exact power of ten, i.e. c = 10^k, one may determine k as
+    //
+    //      k = ceil( log_10( 2^(alpha - e - 1) ) )
+    //        = ceil( (alpha - e - 1) * log_10(2) )
+    //
+    // From the paper:
+    // "In theory the result of the procedure could be wrong since c is rounded,
+    //  and the computation itself is approximated [...]. In practice, however,
+    //  this simple function is sufficient."
+    //
+    // For IEEE double precision floating-point numbers converted into
+    // normalized diyfp's w = f * 2^e, with q = 64,
+    //
+    //      e >= -1022      (min IEEE exponent)
+    //           -52        (p - 1)
+    //           -52        (p - 1, possibly normalize denormal IEEE numbers)
+    //           -11        (normalize the diyfp)
+    //         = -1137
+    //
+    // and
+    //
+    //      e <= +1023      (max IEEE exponent)
+    //           -52        (p - 1)
+    //           -11        (normalize the diyfp)
+    //         = 960
+    //
+    // This binary exponent range [-1137,960] results in a decimal exponent
+    // range [-307,324]. One does not need to store a cached power for each
+    // k in this range. For each such k it suffices to find a cached power
+    // such that the exponent of the product lies in [alpha,gamma].
+    // This implies that the difference of the decimal exponents of adjacent
+    // table entries must be less than or equal to
+    //
+    //      floor( (gamma - alpha) * log_10(2) ) = 8.
+    //
+    // (A smaller distance gamma-alpha would require a larger table.)
+
+    // NB:
+    // Actually this function returns c, such that -60 <= e_c + e + 64 <= -34.
+
+    constexpr int kCachedPowersMinDecExp = -300;
+    constexpr int kCachedPowersDecStep = 8;
+
+    static constexpr std::array<cached_power, 79> kCachedPowers =
+    {
+        {
+            { 0xAB70FE17C79AC6CA, -1060, -300 },
+            { 0xFF77B1FCBEBCDC4F, -1034, -292 },
+            { 0xBE5691EF416BD60C, -1007, -284 },
+            { 0x8DD01FAD907FFC3C,  -980, -276 },
+            { 0xD3515C2831559A83,  -954, -268 },
+            { 0x9D71AC8FADA6C9B5,  -927, -260 },
+            { 0xEA9C227723EE8BCB,  -901, -252 },
+            { 0xAECC49914078536D,  -874, -244 },
+            { 0x823C12795DB6CE57,  -847, -236 },
+            { 0xC21094364DFB5637,  -821, -228 },
+            { 0x9096EA6F3848984F,  -794, -220 },
+            { 0xD77485CB25823AC7,  -768, -212 },
+            { 0xA086CFCD97BF97F4,  -741, -204 },
+            { 0xEF340A98172AACE5,  -715, -196 },
+            { 0xB23867FB2A35B28E,  -688, -188 },
+            { 0x84C8D4DFD2C63F3B,  -661, -180 },
+            { 0xC5DD44271AD3CDBA,  -635, -172 },
+            { 0x936B9FCEBB25C996,  -608, -164 },
+            { 0xDBAC6C247D62A584,  -582, -156 },
+            { 0xA3AB66580D5FDAF6,  -555, -148 },
+            { 0xF3E2F893DEC3F126,  -529, -140 },
+            { 0xB5B5ADA8AAFF80B8,  -502, -132 },
+            { 0x87625F056C7C4A8B,  -475, -124 },
+            { 0xC9BCFF6034C13053,  -449, -116 },
+            { 0x964E858C91BA2655,  -422, -108 },
+            { 0xDFF9772470297EBD,  -396, -100 },
+            { 0xA6DFBD9FB8E5B88F,  -369,  -92 },
+            { 0xF8A95FCF88747D94,  -343,  -84 },
+            { 0xB94470938FA89BCF,  -316,  -76 },
+            { 0x8A08F0F8BF0F156B,  -289,  -68 },
+            { 0xCDB02555653131B6,  -263,  -60 },
+            { 0x993FE2C6D07B7FAC,  -236,  -52 },
+            { 0xE45C10C42A2B3B06,  -210,  -44 },
+            { 0xAA242499697392D3,  -183,  -36 },
+            { 0xFD87B5F28300CA0E,  -157,  -28 },
+            { 0xBCE5086492111AEB,  -130,  -20 },
+            { 0x8CBCCC096F5088CC,  -103,  -12 },
+            { 0xD1B71758E219652C,   -77,   -4 },
+            { 0x9C40000000000000,   -50,    4 },
+            { 0xE8D4A51000000000,   -24,   12 },
+            { 0xAD78EBC5AC620000,     3,   20 },
+            { 0x813F3978F8940984,    30,   28 },
+            { 0xC097CE7BC90715B3,    56,   36 },
+            { 0x8F7E32CE7BEA5C70,    83,   44 },
+            { 0xD5D238A4ABE98068,   109,   52 },
+            { 0x9F4F2726179A2245,   136,   60 },
+            { 0xED63A231D4C4FB27,   162,   68 },
+            { 0xB0DE65388CC8ADA8,   189,   76 },
+            { 0x83C7088E1AAB65DB,   216,   84 },
+            { 0xC45D1DF942711D9A,   242,   92 },
+            { 0x924D692CA61BE758,   269,  100 },
+            { 0xDA01EE641A708DEA,   295,  108 },
+            { 0xA26DA3999AEF774A,   322,  116 },
+            { 0xF209787BB47D6B85,   348,  124 },
+            { 0xB454E4A179DD1877,   375,  132 },
+            { 0x865B86925B9BC5C2,   402,  140 },
+            { 0xC83553C5C8965D3D,   428,  148 },
+            { 0x952AB45CFA97A0B3,   455,  156 },
+            { 0xDE469FBD99A05FE3,   481,  164 },
+            { 0xA59BC234DB398C25,   508,  172 },
+            { 0xF6C69A72A3989F5C,   534,  180 },
+            { 0xB7DCBF5354E9BECE,   561,  188 },
+            { 0x88FCF317F22241E2,   588,  196 },
+            { 0xCC20CE9BD35C78A5,   614,  204 },
+            { 0x98165AF37B2153DF,   641,  212 },
+            { 0xE2A0B5DC971F303A,   667,  220 },
+            { 0xA8D9D1535CE3B396,   694,  228 },
+            { 0xFB9B7CD9A4A7443C,   720,  236 },
+            { 0xBB764C4CA7A44410,   747,  244 },
+            { 0x8BAB8EEFB6409C1A,   774,  252 },
+            { 0xD01FEF10A657842C,   800,  260 },
+            { 0x9B10A4E5E9913129,   827,  268 },
+            { 0xE7109BFBA19C0C9D,   853,  276 },
+            { 0xAC2820D9623BF429,   880,  284 },
+            { 0x80444B5E7AA7CF85,   907,  292 },
+            { 0xBF21E44003ACDD2D,   933,  300 },
+            { 0x8E679C2F5E44FF8F,   960,  308 },
+            { 0xD433179D9C8CB841,   986,  316 },
+            { 0x9E19DB92B4E31BA9,  1013,  324 },
+        }
+    };
+
+    // This computation gives exactly the same results for k as
+    //      k = ceil((kAlpha - e - 1) * 0.30102999566398114)
+    // for |e| <= 1500, but doesn't require floating-point operations.
+    // NB: log_10(2) ~= 78913 / 2^18
+    JSON_ASSERT(e >= -1500);
+    JSON_ASSERT(e <=  1500);
+    const int f = kAlpha - e - 1;
+    const int k = ((f * 78913) / (1 << 18)) + static_cast<int>(f > 0);
+
+    const int index = (-kCachedPowersMinDecExp + k + (kCachedPowersDecStep - 1)) / kCachedPowersDecStep;
+    JSON_ASSERT(index >= 0);
+    JSON_ASSERT(static_cast<std::size_t>(index) < kCachedPowers.size());
+
+    const cached_power cached = kCachedPowers[static_cast<std::size_t>(index)];
+    JSON_ASSERT(kAlpha <= cached.e + e + 64);
+    JSON_ASSERT(kGamma >= cached.e + e + 64);
+
+    return cached;
+}
+
+/*!
+For n != 0, returns k, such that pow10 := 10^(k-1) <= n < 10^k.
+For n == 0, returns 1 and sets pow10 := 1.
+*/
+inline int find_largest_pow10(const std::uint32_t n, std::uint32_t& pow10)
+{
+    // LCOV_EXCL_START
+    if (n >= 1000000000)
+    {
+        pow10 = 1000000000;
+        return 10;
+    }
+    // LCOV_EXCL_STOP
+    if (n >= 100000000)
+    {
+        pow10 = 100000000;
+        return  9;
+    }
+    if (n >= 10000000)
+    {
+        pow10 = 10000000;
+        return  8;
+    }
+    if (n >= 1000000)
+    {
+        pow10 = 1000000;
+        return  7;
+    }
+    if (n >= 100000)
+    {
+        pow10 = 100000;
+        return  6;
+    }
+    if (n >= 10000)
+    {
+        pow10 = 10000;
+        return  5;
+    }
+    if (n >= 1000)
+    {
+        pow10 = 1000;
+        return  4;
+    }
+    if (n >= 100)
+    {
+        pow10 = 100;
+        return  3;
+    }
+    if (n >= 10)
+    {
+        pow10 = 10;
+        return  2;
+    }
+
+    pow10 = 1;
+    return 1;
+}
+
+inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t delta,
+                         std::uint64_t rest, std::uint64_t ten_k)
+{
+    JSON_ASSERT(len >= 1);
+    JSON_ASSERT(dist <= delta);
+    JSON_ASSERT(rest <= delta);
+    JSON_ASSERT(ten_k > 0);
+
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    //                                  ten_k
+    //                                <------>
+    //                                       <---- rest ---->
+    // --------------[------------------+----+--------------]--------------
+    //                                  w    V
+    //                                       = buf * 10^k
+    //
+    // ten_k represents a unit-in-the-last-place in the decimal representation
+    // stored in buf.
+    // Decrement buf by ten_k while this takes buf closer to w.
+
+    // The tests are written in this order to avoid overflow in unsigned
+    // integer arithmetic.
+
+    while (rest < dist
+            && delta - rest >= ten_k
+            && (rest + ten_k < dist || dist - rest > rest + ten_k - dist))
+    {
+        JSON_ASSERT(buf[len - 1] != '0');
+        buf[len - 1]--;
+        rest += ten_k;
+    }
+}
+
+/*!
+Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+.
+M- and M+ must be normalized and share the same exponent -60 <= e <= -32.
+*/
+inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
+                             diyfp M_minus, diyfp w, diyfp M_plus)
+{
+    static_assert(kAlpha >= -60, "internal error");
+    static_assert(kGamma <= -32, "internal error");
+
+    // Generates the digits (and the exponent) of a decimal floating-point
+    // number V = buffer * 10^decimal_exponent in the range [M-, M+]. The diyfp's
+    // w, M- and M+ share the same exponent e, which satisfies alpha <= e <= gamma.
+    //
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    // Grisu2 generates the digits of M+ from left to right and stops as soon as
+    // V is in [M-,M+].
+
+    JSON_ASSERT(M_plus.e >= kAlpha);
+    JSON_ASSERT(M_plus.e <= kGamma);
+
+    std::uint64_t delta = diyfp::sub(M_plus, M_minus).f; // (significand of (M+ - M-), implicit exponent is e)
+    std::uint64_t dist  = diyfp::sub(M_plus, w      ).f; // (significand of (M+ - w ), implicit exponent is e)
+
+    // Split M+ = f * 2^e into two parts p1 and p2 (note: e < 0):
+    //
+    //      M+ = f * 2^e
+    //         = ((f div 2^-e) * 2^-e + (f mod 2^-e)) * 2^e
+    //         = ((p1        ) * 2^-e + (p2        )) * 2^e
+    //         = p1 + p2 * 2^e
+
+    const diyfp one(std::uint64_t{1} << -M_plus.e, M_plus.e);
+
+    auto p1 = static_cast<std::uint32_t>(M_plus.f >> -one.e); // p1 = f div 2^-e (Since -e >= 32, p1 fits into a 32-bit int.)
+    std::uint64_t p2 = M_plus.f & (one.f - 1);                    // p2 = f mod 2^-e
+
+    // 1)
+    //
+    // Generate the digits of the integral part p1 = d[n-1]...d[1]d[0]
+
+    JSON_ASSERT(p1 > 0);
+
+    std::uint32_t pow10{};
+    const int k = find_largest_pow10(p1, pow10);
+
+    //      10^(k-1) <= p1 < 10^k, pow10 = 10^(k-1)
+    //
+    //      p1 = (p1 div 10^(k-1)) * 10^(k-1) + (p1 mod 10^(k-1))
+    //         = (d[k-1]         ) * 10^(k-1) + (p1 mod 10^(k-1))
+    //
+    //      M+ = p1                                             + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + (p1 mod 10^(k-1))          + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + ((p1 mod 10^(k-1)) * 2^-e + p2) * 2^e
+    //         = d[k-1] * 10^(k-1) + (                         rest) * 2^e
+    //
+    // Now generate the digits d[n] of p1 from left to right (n = k-1,...,0)
+    //
+    //      p1 = d[k-1]...d[n] * 10^n + d[n-1]...d[0]
+    //
+    // but stop as soon as
+    //
+    //      rest * 2^e = (d[n-1]...d[0] * 2^-e + p2) * 2^e <= delta * 2^e
+
+    int n = k;
+    while (n > 0)
+    {
+        // Invariants:
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)    (buffer = 0 for n = k)
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        //
+        const std::uint32_t d = p1 / pow10;  // d = p1 div 10^(n-1)
+        const std::uint32_t r = p1 % pow10;  // r = p1 mod 10^(n-1)
+        //
+        //      M+ = buffer * 10^n + (d * 10^(n-1) + r) + p2 * 2^e
+        //         = (buffer * 10 + d) * 10^(n-1) + (r + p2 * 2^e)
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(n-1) + (r + p2 * 2^e)
+        //
+        p1 = r;
+        n--;
+        //
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)
+        //      pow10 = 10^n
+        //
+
+        // Now check if enough digits have been generated.
+        // Compute
+        //
+        //      p1 + p2 * 2^e = (p1 * 2^-e + p2) * 2^e = rest * 2^e
+        //
+        // Note:
+        // Since rest and delta share the same exponent e, it suffices to
+        // compare the significands.
+        const std::uint64_t rest = (std::uint64_t{p1} << -one.e) + p2;
+        if (rest <= delta)
+        {
+            // V = buffer * 10^n, with M- <= V <= M+.
+
+            decimal_exponent += n;
+
+            // We may now just stop. But instead look if the buffer could be
+            // decremented to bring V closer to w.
+            //
+            // pow10 = 10^n is now 1 ulp in the decimal representation V.
+            // The rounding procedure works with diyfp's with an implicit
+            // exponent of e.
+            //
+            //      10^n = (10^n * 2^-e) * 2^e = ulp * 2^e
+            //
+            const std::uint64_t ten_n = std::uint64_t{pow10} << -one.e;
+            grisu2_round(buffer, length, dist, delta, rest, ten_n);
+
+            return;
+        }
+
+        pow10 /= 10;
+        //
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        // Invariants restored.
+    }
+
+    // 2)
+    //
+    // The digits of the integral part have been generated:
+    //
+    //      M+ = d[k-1]...d[1]d[0] + p2 * 2^e
+    //         = buffer            + p2 * 2^e
+    //
+    // Now generate the digits of the fractional part p2 * 2^e.
+    //
+    // Note:
+    // No decimal point is generated: the exponent is adjusted instead.
+    //
+    // p2 actually represents the fraction
+    //
+    //      p2 * 2^e
+    //          = p2 / 2^-e
+    //          = d[-1] / 10^1 + d[-2] / 10^2 + ...
+    //
+    // Now generate the digits d[-m] of p1 from left to right (m = 1,2,...)
+    //
+    //      p2 * 2^e = d[-1]d[-2]...d[-m] * 10^-m
+    //                      + 10^-m * (d[-m-1] / 10^1 + d[-m-2] / 10^2 + ...)
+    //
+    // using
+    //
+    //      10^m * p2 = ((10^m * p2) div 2^-e) * 2^-e + ((10^m * p2) mod 2^-e)
+    //                = (                   d) * 2^-e + (                   r)
+    //
+    // or
+    //      10^m * p2 * 2^e = d + r * 2^e
+    //
+    // i.e.
+    //
+    //      M+ = buffer + p2 * 2^e
+    //         = buffer + 10^-m * (d + r * 2^e)
+    //         = (buffer * 10^m + d) * 10^-m + 10^-m * r * 2^e
+    //
+    // and stop as soon as 10^-m * r * 2^e <= delta * 2^e
+
+    JSON_ASSERT(p2 > delta);
+
+    int m = 0;
+    for (;;)
+    {
+        // Invariant:
+        //      M+ = buffer * 10^-m + 10^-m * (d[-m-1] / 10 + d[-m-2] / 10^2 + ...) * 2^e
+        //         = buffer * 10^-m + 10^-m * (p2                                 ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (10 * p2)                   ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * ((10*p2 div 2^-e) * 2^-e + (10*p2 mod 2^-e)) * 2^e
+        //
+        JSON_ASSERT(p2 <= (std::numeric_limits<std::uint64_t>::max)() / 10);
+        p2 *= 10;
+        const std::uint64_t d = p2 >> -one.e;     // d = (10 * p2) div 2^-e
+        const std::uint64_t r = p2 & (one.f - 1); // r = (10 * p2) mod 2^-e
+        //
+        //      M+ = buffer * 10^-m + 10^-m * (1/10 * (d * 2^-e + r) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (d + r * 2^e))
+        //         = (buffer * 10 + d) * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        p2 = r;
+        m++;
+        //
+        //      M+ = buffer * 10^-m + 10^-m * p2 * 2^e
+        // Invariant restored.
+
+        // Check if enough digits have been generated.
+        //
+        //      10^-m * p2 * 2^e <= delta * 2^e
+        //              p2 * 2^e <= 10^m * delta * 2^e
+        //                    p2 <= 10^m * delta
+        delta *= 10;
+        dist  *= 10;
+        if (p2 <= delta)
+        {
+            break;
+        }
+    }
+
+    // V = buffer * 10^-m, with M- <= V <= M+.
+
+    decimal_exponent -= m;
+
+    // 1 ulp in the decimal representation is now 10^-m.
+    // Since delta and dist are now scaled by 10^m, we need to do the
+    // same with ulp in order to keep the units in sync.
+    //
+    //      10^m * 10^-m = 1 = 2^-e * 2^e = ten_m * 2^e
+    //
+    const std::uint64_t ten_m = one.f;
+    grisu2_round(buffer, length, dist, delta, p2, ten_m);
+
+    // By construction this algorithm generates the shortest possible decimal
+    // number (Loitsch, Theorem 6.2) which rounds back to w.
+    // For an input number of precision p, at least
+    //
+    //      N = 1 + ceil(p * log_10(2))
+    //
+    // decimal digits are sufficient to identify all binary floating-point
+    // numbers (Matula, "In-and-Out conversions").
+    // This implies that the algorithm does not produce more than N decimal
+    // digits.
+    //
+    //      N = 17 for p = 53 (IEEE double precision)
+    //      N = 9  for p = 24 (IEEE single precision)
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+JSON_HEDLEY_NON_NULL(1)
+inline void grisu2(char* buf, int& len, int& decimal_exponent,
+                   diyfp m_minus, diyfp v, diyfp m_plus)
+{
+    JSON_ASSERT(m_plus.e == m_minus.e);
+    JSON_ASSERT(m_plus.e == v.e);
+
+    //  --------(-----------------------+-----------------------)--------    (A)
+    //          m-                      v                       m+
+    //
+    //  --------------------(-----------+-----------------------)--------    (B)
+    //                      m-          v                       m+
+    //
+    // First scale v (and m- and m+) such that the exponent is in the range
+    // [alpha, gamma].
+
+    const cached_power cached = get_cached_power_for_binary_exponent(m_plus.e);
+
+    const diyfp c_minus_k(cached.f, cached.e); // = c ~= 10^-k
+
+    // The exponent of the products is = v.e + c_minus_k.e + q and is in the range [alpha,gamma]
+    const diyfp w       = diyfp::mul(v,       c_minus_k);
+    const diyfp w_minus = diyfp::mul(m_minus, c_minus_k);
+    const diyfp w_plus  = diyfp::mul(m_plus,  c_minus_k);
+
+    //  ----(---+---)---------------(---+---)---------------(---+---)----
+    //          w-                      w                       w+
+    //          = c*m-                  = c*v                   = c*m+
+    //
+    // diyfp::mul rounds its result and c_minus_k is approximated too. w, w- and
+    // w+ are now off by a small amount.
+    // In fact:
+    //
+    //      w - v * 10^k < 1 ulp
+    //
+    // To account for this inaccuracy, add resp. subtract 1 ulp.
+    //
+    //  --------+---[---------------(---+---)---------------]---+--------
+    //          w-  M-                  w                   M+  w+
+    //
+    // Now any number in [M-, M+] (bounds included) will round to w when input,
+    // regardless of how the input rounding algorithm breaks ties.
+    //
+    // And digit_gen generates the shortest possible such number in [M-, M+].
+    // Note that this does not mean that Grisu2 always generates the shortest
+    // possible number in the interval (m-, m+).
+    const diyfp M_minus(w_minus.f + 1, w_minus.e);
+    const diyfp M_plus (w_plus.f  - 1, w_plus.e );
+
+    decimal_exponent = -cached.k; // = -(-k) = k
+
+    grisu2_digit_gen(buf, len, decimal_exponent, M_minus, w, M_plus);
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1)
+void grisu2(char* buf, int& len, int& decimal_exponent, FloatType value)
+{
+    static_assert(diyfp::kPrecision >= std::numeric_limits<FloatType>::digits + 3,
+                  "internal error: not enough precision");
+
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // If the neighbors (and boundaries) of 'value' are always computed for double-precision
+    // numbers, all float's can be recovered using strtod (and strtof). However, the resulting
+    // decimal representations are not exactly "short".
+    //
+    // The documentation for 'std::to_chars' (https://en.cppreference.com/w/cpp/utility/to_chars)
+    // says "value is converted to a string as if by std::sprintf in the default ("C") locale"
+    // and since sprintf promotes floats to doubles, I think this is exactly what 'std::to_chars'
+    // does.
+    // On the other hand, the documentation for 'std::to_chars' requires that "parsing the
+    // representation using the corresponding std::from_chars function recovers value exactly". That
+    // indicates that single precision floating-point numbers should be recovered using
+    // 'std::strtof'.
+    //
+    // NB: If the neighbors are computed for single-precision numbers, there is a single float
+    //     (7.0385307e-26f) which can't be recovered using strtod. The resulting double precision
+    //     value is off by 1 ulp.
+#if 0 // NOLINT(readability-avoid-unconditional-preprocessor-if)
+    const boundaries w = compute_boundaries(static_cast<double>(value));
+#else
+    const boundaries w = compute_boundaries(value);
+#endif
+
+    grisu2(buf, len, decimal_exponent, w.minus, w.w, w.plus);
+}
+
+/*!
+@brief appends a decimal representation of e to buf
+@return a pointer to the element following the exponent.
+@pre -1000 < e < 1000
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* append_exponent(char* buf, int e)
+{
+    JSON_ASSERT(e > -1000);
+    JSON_ASSERT(e <  1000);
+
+    if (e < 0)
+    {
+        e = -e;
+        *buf++ = '-';
+    }
+    else
+    {
+        *buf++ = '+';
+    }
+
+    auto k = static_cast<std::uint32_t>(e);
+    if (k < 10)
+    {
+        // Always print at least two digits in the exponent.
+        // This is for compatibility with printf("%g").
+        *buf++ = '0';
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else if (k < 100)
+    {
+        *buf++ = static_cast<char>('0' + (k / 10));
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else
+    {
+        *buf++ = static_cast<char>('0' + (k / 100));
+        k %= 100;
+        *buf++ = static_cast<char>('0' + (k / 10));
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+
+    return buf;
+}
+
+/*!
+@brief prettify v = buf * 10^decimal_exponent
+
+If v is in the range [10^min_exp, 10^max_exp) it will be printed in fixed-point
+notation. Otherwise it will be printed in exponential notation.
+
+@pre min_exp < 0
+@pre max_exp > 0
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* format_buffer(char* buf, int len, int decimal_exponent,
+                           int min_exp, int max_exp)
+{
+    JSON_ASSERT(min_exp < 0);
+    JSON_ASSERT(max_exp > 0);
+
+    const int k = len;
+    const int n = len + decimal_exponent;
+
+    // v = buf * 10^(n-k)
+    // k is the length of the buffer (number of decimal digits)
+    // n is the position of the decimal point relative to the start of the buffer.
+
+    if (k <= n && n <= max_exp)
+    {
+        // digits[000]
+        // len <= max_exp + 2
+
+        std::memset(buf + k, '0', static_cast<size_t>(n) - static_cast<size_t>(k));
+        // Make it look like a floating-point number (#362, #378)
+        buf[n + 0] = '.';
+        buf[n + 1] = '0';
+        return buf + (static_cast<size_t>(n) + 2);
+    }
+
+    if (0 < n && n <= max_exp)
+    {
+        // dig.its
+        // len <= max_digits10 + 1
+
+        JSON_ASSERT(k > n);
+
+        std::memmove(buf + (static_cast<size_t>(n) + 1), buf + n, static_cast<size_t>(k) - static_cast<size_t>(n));
+        buf[n] = '.';
+        return buf + (static_cast<size_t>(k) + 1U);
+    }
+
+    if (min_exp < n && n <= 0)
+    {
+        // 0.[000]digits
+        // len <= 2 + (-min_exp - 1) + max_digits10
+
+        std::memmove(buf + (2 + static_cast<size_t>(-n)), buf, static_cast<size_t>(k));
+        buf[0] = '0';
+        buf[1] = '.';
+        std::memset(buf + 2, '0', static_cast<size_t>(-n));
+        return buf + (2U + static_cast<size_t>(-n) + static_cast<size_t>(k));
+    }
+
+    if (k == 1)
+    {
+        // dE+123
+        // len <= 1 + 5
+
+        buf += 1;
+    }
+    else
+    {
+        // d.igitsE+123
+        // len <= max_digits10 + 1 + 5
+
+        std::memmove(buf + 2, buf + 1, static_cast<size_t>(k) - 1);
+        buf[1] = '.';
+        buf += 1 + static_cast<size_t>(k);
+    }
+
+    *buf++ = 'e';
+    return append_exponent(buf, n - 1);
+}
+
+}  // namespace dtoa_impl
+
+/*!
+@brief generates a decimal representation of the floating-point number value in [first, last).
+
+The format of the resulting decimal representation is similar to printf's %g
+format. Returns an iterator pointing past-the-end of the decimal representation.
+
+@note The input number must be finite, i.e. NaN's and Inf's are not supported.
+@note The buffer must be large enough.
+@note The result is NOT null-terminated.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* to_chars(char* first, const char* last, FloatType value)
+{
+    static_cast<void>(last); // maybe unused - fix warning
+    JSON_ASSERT(std::isfinite(value));
+
+    // Use signbit(value) instead of (value < 0) since signbit works for -0.
+    if (std::signbit(value))
+    {
+        value = -value;
+        *first++ = '-';
+    }
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+    if (value == 0) // +-0
+    {
+        *first++ = '0';
+        // Make it look like a floating-point number (#362, #378)
+        *first++ = '.';
+        *first++ = '0';
+        return first;
+    }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);
+
+    // Compute v = buffer * 10^decimal_exponent.
+    // The decimal digits are stored in the buffer, which needs to be interpreted
+    // as an unsigned decimal integer.
+    // len is the length of the buffer, i.e. the number of decimal digits.
+    int len = 0;
+    int decimal_exponent = 0;
+    dtoa_impl::grisu2(first, len, decimal_exponent, value);
+
+    JSON_ASSERT(len <= std::numeric_limits<FloatType>::max_digits10);
+
+    // Format the buffer like printf("%.*g", prec, value)
+    constexpr int kMinExp = -4;
+    // Use digits10 here to increase compatibility with version 2.
+    constexpr int kMaxExp = std::numeric_limits<FloatType>::digits10;
+
+    JSON_ASSERT(last - first >= kMaxExp + 2);
+    JSON_ASSERT(last - first >= 2 + (-kMinExp - 1) + std::numeric_limits<FloatType>::max_digits10);
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10 + 6);
+
+    return dtoa_impl::format_buffer(first, len, decimal_exponent, kMinExp, kMaxExp);
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/output/binary_writer.hpp>
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////
+// serialization //
+///////////////////
+
+/// how to treat decoding errors
+enum class error_handler_t
+{
+    strict,  ///< throw a type_error exception in case of invalid UTF-8
+    replace, ///< replace invalid UTF-8 sequences with U+FFFD
+    ignore   ///< ignore invalid UTF-8 sequences
+};
+
+template<typename BasicJsonType>
+class serializer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using binary_char_t = typename BasicJsonType::binary_t::value_type;
+    static constexpr std::uint8_t UTF8_ACCEPT = 0;
+    static constexpr std::uint8_t UTF8_REJECT = 1;
+
+  public:
+    /*!
+    @param[in] s  output stream to serialize to
+    @param[in] ichar  indentation character to use
+    @param[in] error_handler_  how to react on decoding errors
+    */
+    serializer(output_adapter_t<char> s, const char ichar,
+               error_handler_t error_handler_ = error_handler_t::strict)
+        : o(std::move(s))
+        , loc(std::localeconv())
+        , thousands_sep(loc->thousands_sep == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->thousands_sep)))
+        , decimal_point(loc->decimal_point == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->decimal_point)))
+        , indent_char(ichar)
+        , indent_string(512, indent_char)
+        , error_handler(error_handler_)
+    {}
+
+    // delete because of pointer members
+    serializer(const serializer&) = delete;
+    serializer& operator=(const serializer&) = delete;
+    serializer(serializer&&) = delete;
+    serializer& operator=(serializer&&) = delete;
+    ~serializer() = default;
+
+    /*!
+    @brief internal implementation of the serialization function
+
+    This function is called by the public member function dump and organizes
+    the serialization internally. The indentation level is propagated as
+    additional parameter. In case of arrays and objects, the function is
+    called recursively.
+
+    - strings and object keys are escaped using `escape_string()`
+    - integer numbers are converted implicitly via `operator<<`
+    - floating-point numbers are converted to a string using `"%g"` format
+    - binary values are serialized as objects containing the subtype and the
+      byte array
+
+    @param[in] val               value to serialize
+    @param[in] pretty_print      whether the output shall be pretty-printed
+    @param[in] ensure_ascii If @a ensure_ascii is true, all non-ASCII characters
+    in the output are escaped with `\uXXXX` sequences, and the result consists
+    of ASCII characters only.
+    @param[in] indent_step       the indent level
+    @param[in] current_indent    the current indent level (only used internally)
+    */
+    void dump(const BasicJsonType& val,
+              const bool pretty_print,
+              const bool ensure_ascii,
+              const unsigned int indent_step,
+              const unsigned int current_indent = 0)
+    {
+        switch (val.m_data.m_type)
+        {
+            case value_t::object:
+            {
+                if (val.m_data.m_value.object->empty())
+                {
+                    o->write_characters("{}", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    auto i = val.m_data.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_data.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\": ", 3);
+                        dump(i->second, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_data.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_data.m_value.object->cend());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\": ", 3);
+                    dump(i->second, true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_character('{');
+
+                    // first n-1 elements
+                    auto i = val.m_data.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_data.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\":", 2);
+                        dump(i->second, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_data.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_data.m_value.object->cend());
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\":", 2);
+                    dump(i->second, false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character('}');
+                }
+
+                return;
+            }
+
+            case value_t::array:
+            {
+                if (val.m_data.m_value.array->empty())
+                {
+                    o->write_characters("[]", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("[\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    for (auto i = val.m_data.m_value.array->cbegin();
+                            i != val.m_data.m_value.array->cend() - 1; ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        dump(*i, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_data.m_value.array->empty());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    dump(val.m_data.m_value.array->back(), true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character(']');
+                }
+                else
+                {
+                    o->write_character('[');
+
+                    // first n-1 elements
+                    for (auto i = val.m_data.m_value.array->cbegin();
+                            i != val.m_data.m_value.array->cend() - 1; ++i)
+                    {
+                        dump(*i, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_data.m_value.array->empty());
+                    dump(val.m_data.m_value.array->back(), false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character(']');
+                }
+
+                return;
+            }
+
+            case value_t::string:
+            {
+                o->write_character('\"');
+                dump_escaped(*val.m_data.m_value.string, ensure_ascii);
+                o->write_character('\"');
+                return;
+            }
+
+            case value_t::binary:
+            {
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"bytes\": [", 10);
+
+                    if (!val.m_data.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_data.m_value.binary->cbegin();
+                                i != val.m_data.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_characters(", ", 2);
+                        }
+                        dump_integer(val.m_data.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\n", 3);
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"subtype\": ", 11);
+                    if (val.m_data.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_data.m_value.binary->subtype());
+                    }
+                    else
+                    {
+                        o->write_characters("null", 4);
+                    }
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_characters("{\"bytes\":[", 10);
+
+                    if (!val.m_data.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_data.m_value.binary->cbegin();
+                                i != val.m_data.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_character(',');
+                        }
+                        dump_integer(val.m_data.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\"subtype\":", 12);
+                    if (val.m_data.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_data.m_value.binary->subtype());
+                        o->write_character('}');
+                    }
+                    else
+                    {
+                        o->write_characters("null}", 5);
+                    }
+                }
+                return;
+            }
+
+            case value_t::boolean:
+            {
+                if (val.m_data.m_value.boolean)
+                {
+                    o->write_characters("true", 4);
+                }
+                else
+                {
+                    o->write_characters("false", 5);
+                }
+                return;
+            }
+
+            case value_t::number_integer:
+            {
+                dump_integer(val.m_data.m_value.number_integer);
+                return;
+            }
+
+            case value_t::number_unsigned:
+            {
+                dump_integer(val.m_data.m_value.number_unsigned);
+                return;
+            }
+
+            case value_t::number_float:
+            {
+                dump_float(val.m_data.m_value.number_float);
+                return;
+            }
+
+            case value_t::discarded:
+            {
+                o->write_characters("<discarded>", 11);
+                return;
+            }
+
+            case value_t::null:
+            {
+                o->write_characters("null", 4);
+                return;
+            }
+
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief dump escaped string
+
+    Escape a string by replacing certain special characters by a sequence of an
+    escape character (backslash) and another character and other control
+    characters by a sequence of "\u" followed by a four-digit hex
+    representation. The escaped string is written to output stream @a o.
+
+    @param[in] s  the string to escape
+    @param[in] ensure_ascii  whether to escape non-ASCII characters with
+                             \uXXXX sequences
+
+    @complexity Linear in the length of string @a s.
+    */
+    void dump_escaped(const string_t& s, const bool ensure_ascii)
+    {
+        std::uint32_t codepoint{};
+        std::uint8_t state = UTF8_ACCEPT;
+        std::size_t bytes = 0;  // number of bytes written to string_buffer
+
+        // number of bytes written at the point of the last valid byte
+        std::size_t bytes_after_last_accept = 0;
+        std::size_t undumped_chars = 0;
+
+        for (std::size_t i = 0; i < s.size(); ++i)
+        {
+            const auto byte = static_cast<std::uint8_t>(s[i]);
+
+            switch (decode(state, codepoint, byte))
+            {
+                case UTF8_ACCEPT:  // decode found a new code point
+                {
+                    switch (codepoint)
+                    {
+                        case 0x08: // backspace
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'b';
+                            break;
+                        }
+
+                        case 0x09: // horizontal tab
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 't';
+                            break;
+                        }
+
+                        case 0x0A: // newline
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'n';
+                            break;
+                        }
+
+                        case 0x0C: // formfeed
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'f';
+                            break;
+                        }
+
+                        case 0x0D: // carriage return
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'r';
+                            break;
+                        }
+
+                        case 0x22: // quotation mark
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\"';
+                            break;
+                        }
+
+                        case 0x5C: // reverse solidus
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\\';
+                            break;
+                        }
+
+                        default:
+                        {
+                            // escape control characters (0x00..0x1F) or, if
+                            // ensure_ascii parameter is used, non-ASCII characters
+                            if ((codepoint <= 0x1F) || (ensure_ascii && (codepoint >= 0x7F)))
+                            {
+                                if (codepoint <= 0xFFFF)
+                                {
+                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 7, "\\u%04x",
+                                                                      static_cast<std::uint16_t>(codepoint)));
+                                    bytes += 6;
+                                }
+                                else
+                                {
+                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 13, "\\u%04x\\u%04x",
+                                                                      static_cast<std::uint16_t>(0xD7C0u + (codepoint >> 10u)),
+                                                                      static_cast<std::uint16_t>(0xDC00u + (codepoint & 0x3FFu))));
+                                    bytes += 12;
+                                }
+                            }
+                            else
+                            {
+                                // copy byte to buffer (all previous bytes
+                                // been copied have in default case above)
+                                string_buffer[bytes++] = s[i];
+                            }
+                            break;
+                        }
+                    }
+
+                    // write buffer and reset index; there must be 13 bytes
+                    // left, as this is the maximal number of bytes to be
+                    // written ("\uxxxx\uxxxx\0") for one code point
+                    if (string_buffer.size() - bytes < 13)
+                    {
+                        o->write_characters(string_buffer.data(), bytes);
+                        bytes = 0;
+                    }
+
+                    // remember the byte position of this accept
+                    bytes_after_last_accept = bytes;
+                    undumped_chars = 0;
+                    break;
+                }
+
+                case UTF8_REJECT:  // decode found invalid UTF-8 byte
+                {
+                    switch (error_handler)
+                    {
+                        case error_handler_t::strict:
+                        {
+                            JSON_THROW(type_error::create(316, concat("invalid UTF-8 byte at index ", std::to_string(i), ": 0x", hex_bytes(byte | 0)), nullptr));
+                        }
+
+                        case error_handler_t::ignore:
+                        case error_handler_t::replace:
+                        {
+                            // in case we saw this character the first time, we
+                            // would like to read it again, because the byte
+                            // may be OK for itself, but just not OK for the
+                            // previous sequence
+                            if (undumped_chars > 0)
+                            {
+                                --i;
+                            }
+
+                            // reset length buffer to the last accepted index;
+                            // thus removing/ignoring the invalid characters
+                            bytes = bytes_after_last_accept;
+
+                            if (error_handler == error_handler_t::replace)
+                            {
+                                // add a replacement character
+                                if (ensure_ascii)
+                                {
+                                    string_buffer[bytes++] = '\\';
+                                    string_buffer[bytes++] = 'u';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'd';
+                                }
+                                else
+                                {
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xEF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBD');
+                                }
+
+                                // write buffer and reset index; there must be 13 bytes
+                                // left, as this is the maximal number of bytes to be
+                                // written ("\uxxxx\uxxxx\0") for one code point
+                                if (string_buffer.size() - bytes < 13)
+                                {
+                                    o->write_characters(string_buffer.data(), bytes);
+                                    bytes = 0;
+                                }
+
+                                bytes_after_last_accept = bytes;
+                            }
+
+                            undumped_chars = 0;
+
+                            // continue processing the string
+                            state = UTF8_ACCEPT;
+                            break;
+                        }
+
+                        default:            // LCOV_EXCL_LINE
+                            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+
+                default:  // decode found yet incomplete multi-byte code point
+                {
+                    if (!ensure_ascii)
+                    {
+                        // code point will not be escaped - copy byte to buffer
+                        string_buffer[bytes++] = s[i];
+                    }
+                    ++undumped_chars;
+                    break;
+                }
+            }
+        }
+
+        // we finished processing the string
+        if (JSON_HEDLEY_LIKELY(state == UTF8_ACCEPT))
+        {
+            // write buffer
+            if (bytes > 0)
+            {
+                o->write_characters(string_buffer.data(), bytes);
+            }
+        }
+        else
+        {
+            // we finish reading, but do not accept: string was incomplete
+            switch (error_handler)
+            {
+                case error_handler_t::strict:
+                {
+                    JSON_THROW(type_error::create(316, concat("incomplete UTF-8 string; last byte: 0x", hex_bytes(static_cast<std::uint8_t>(s.back() | 0))), nullptr));
+                }
+
+                case error_handler_t::ignore:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    break;
+                }
+
+                case error_handler_t::replace:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    // add a replacement character
+                    if (ensure_ascii)
+                    {
+                        o->write_characters("\\ufffd", 6);
+                    }
+                    else
+                    {
+                        o->write_characters("\xEF\xBF\xBD", 3);
+                    }
+                    break;
+                }
+
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            }
+        }
+    }
+
+  private:
+    /*!
+    @brief count digits
+
+    Count the number of decimal (base 10) digits for an input unsigned integer.
+
+    @param[in] x  unsigned integer number to count its digits
+    @return    number of decimal digits
+    */
+    unsigned int count_digits(number_unsigned_t x) noexcept
+    {
+        unsigned int n_digits = 1;
+        for (;;)
+        {
+            if (x < 10)
+            {
+                return n_digits;
+            }
+            if (x < 100)
+            {
+                return n_digits + 1;
+            }
+            if (x < 1000)
+            {
+                return n_digits + 2;
+            }
+            if (x < 10000)
+            {
+                return n_digits + 3;
+            }
+            x = x / 10000u;
+            n_digits += 4;
+        }
+    }
+
+    /*!
+     * @brief convert a byte to a uppercase hex representation
+     * @param[in] byte byte to represent
+     * @return representation ("00".."FF")
+     */
+    static std::string hex_bytes(std::uint8_t byte)
+    {
+        std::string result = "FF";
+        constexpr const char* nibble_to_hex = "0123456789ABCDEF";
+        result[0] = nibble_to_hex[byte / 16];
+        result[1] = nibble_to_hex[byte % 16];
+        return result;
+    }
+
+    // templates to avoid warnings about useless casts
+    template <typename NumberType, enable_if_t<std::is_signed<NumberType>::value, int> = 0>
+    bool is_negative_number(NumberType x)
+    {
+        return x < 0;
+    }
+
+    template < typename NumberType, enable_if_t <std::is_unsigned<NumberType>::value, int > = 0 >
+    bool is_negative_number(NumberType /*unused*/)
+    {
+        return false;
+    }
+
+    /*!
+    @brief dump an integer
+
+    Dump a given integer to output stream @a o. Works internally with
+    @a number_buffer.
+
+    @param[in] x  integer number (signed or unsigned) to dump
+    @tparam NumberType either @a number_integer_t or @a number_unsigned_t
+    */
+    template < typename NumberType, detail::enable_if_t <
+                   std::is_integral<NumberType>::value ||
+                   std::is_same<NumberType, number_unsigned_t>::value ||
+                   std::is_same<NumberType, number_integer_t>::value ||
+                   std::is_same<NumberType, binary_char_t>::value,
+                   int > = 0 >
+    void dump_integer(NumberType x)
+    {
+        static constexpr std::array<std::array<char, 2>, 100> digits_to_99
+        {
+            {
+                {{'0', '0'}}, {{'0', '1'}}, {{'0', '2'}}, {{'0', '3'}}, {{'0', '4'}}, {{'0', '5'}}, {{'0', '6'}}, {{'0', '7'}}, {{'0', '8'}}, {{'0', '9'}},
+                {{'1', '0'}}, {{'1', '1'}}, {{'1', '2'}}, {{'1', '3'}}, {{'1', '4'}}, {{'1', '5'}}, {{'1', '6'}}, {{'1', '7'}}, {{'1', '8'}}, {{'1', '9'}},
+                {{'2', '0'}}, {{'2', '1'}}, {{'2', '2'}}, {{'2', '3'}}, {{'2', '4'}}, {{'2', '5'}}, {{'2', '6'}}, {{'2', '7'}}, {{'2', '8'}}, {{'2', '9'}},
+                {{'3', '0'}}, {{'3', '1'}}, {{'3', '2'}}, {{'3', '3'}}, {{'3', '4'}}, {{'3', '5'}}, {{'3', '6'}}, {{'3', '7'}}, {{'3', '8'}}, {{'3', '9'}},
+                {{'4', '0'}}, {{'4', '1'}}, {{'4', '2'}}, {{'4', '3'}}, {{'4', '4'}}, {{'4', '5'}}, {{'4', '6'}}, {{'4', '7'}}, {{'4', '8'}}, {{'4', '9'}},
+                {{'5', '0'}}, {{'5', '1'}}, {{'5', '2'}}, {{'5', '3'}}, {{'5', '4'}}, {{'5', '5'}}, {{'5', '6'}}, {{'5', '7'}}, {{'5', '8'}}, {{'5', '9'}},
+                {{'6', '0'}}, {{'6', '1'}}, {{'6', '2'}}, {{'6', '3'}}, {{'6', '4'}}, {{'6', '5'}}, {{'6', '6'}}, {{'6', '7'}}, {{'6', '8'}}, {{'6', '9'}},
+                {{'7', '0'}}, {{'7', '1'}}, {{'7', '2'}}, {{'7', '3'}}, {{'7', '4'}}, {{'7', '5'}}, {{'7', '6'}}, {{'7', '7'}}, {{'7', '8'}}, {{'7', '9'}},
+                {{'8', '0'}}, {{'8', '1'}}, {{'8', '2'}}, {{'8', '3'}}, {{'8', '4'}}, {{'8', '5'}}, {{'8', '6'}}, {{'8', '7'}}, {{'8', '8'}}, {{'8', '9'}},
+                {{'9', '0'}}, {{'9', '1'}}, {{'9', '2'}}, {{'9', '3'}}, {{'9', '4'}}, {{'9', '5'}}, {{'9', '6'}}, {{'9', '7'}}, {{'9', '8'}}, {{'9', '9'}},
+            }
+        };
+
+        // special case for "0"
+        if (x == 0)
+        {
+            o->write_character('0');
+            return;
+        }
+
+        // use a pointer to fill the buffer
+        auto buffer_ptr = number_buffer.begin(); // NOLINT(llvm-qualified-auto,readability-qualified-auto,cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+
+        number_unsigned_t abs_value;
+
+        unsigned int n_chars{};
+
+        if (is_negative_number(x))
+        {
+            *buffer_ptr = '-';
+            abs_value = remove_sign(static_cast<number_integer_t>(x));
+
+            // account one more byte for the minus sign
+            n_chars = 1 + count_digits(abs_value);
+        }
+        else
+        {
+            abs_value = static_cast<number_unsigned_t>(x);
+            n_chars = count_digits(abs_value);
+        }
+
+        // spare 1 byte for '\0'
+        JSON_ASSERT(n_chars < number_buffer.size() - 1);
+
+        // jump to the end to generate the string from backward,
+        // so we later avoid reversing the result
+        buffer_ptr += n_chars;
+
+        // Fast int2ascii implementation inspired by "Fastware" talk by Andrei Alexandrescu
+        // See: https://www.youtube.com/watch?v=o4-CwDo2zpg
+        while (abs_value >= 100)
+        {
+            const auto digits_index = static_cast<unsigned>((abs_value % 100));
+            abs_value /= 100;
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+
+        if (abs_value >= 10)
+        {
+            const auto digits_index = static_cast<unsigned>(abs_value);
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+        else
+        {
+            *(--buffer_ptr) = static_cast<char>('0' + abs_value);
+        }
+
+        o->write_characters(number_buffer.data(), n_chars);
+    }
+
+    /*!
+    @brief dump a floating-point number
+
+    Dump a given floating-point number to output stream @a o. Works internally
+    with @a number_buffer.
+
+    @param[in] x  floating-point number to dump
+    */
+    void dump_float(number_float_t x)
+    {
+        // NaN / inf
+        if (!std::isfinite(x))
+        {
+            o->write_characters("null", 4);
+            return;
+        }
+
+        // If number_float_t is an IEEE-754 single or double precision number,
+        // use the Grisu2 algorithm to produce short numbers which are
+        // guaranteed to round-trip, using strtof and strtod, resp.
+        //
+        // NB: The test below works if <long double> == <double>.
+        static constexpr bool is_ieee_single_or_double
+            = (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 24 && std::numeric_limits<number_float_t>::max_exponent == 128) ||
+              (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 53 && std::numeric_limits<number_float_t>::max_exponent == 1024);
+
+        dump_float(x, std::integral_constant<bool, is_ieee_single_or_double>());
+    }
+
+    void dump_float(number_float_t x, std::true_type /*is_ieee_single_or_double*/)
+    {
+        auto* begin = number_buffer.data();
+        auto* end = ::nlohmann::detail::to_chars(begin, begin + number_buffer.size(), x);
+
+        o->write_characters(begin, static_cast<size_t>(end - begin));
+    }
+
+    void dump_float(number_float_t x, std::false_type /*is_ieee_single_or_double*/)
+    {
+        // get number of digits for a float -> text -> float round-trip
+        static constexpr auto d = std::numeric_limits<number_float_t>::max_digits10;
+
+        // the actual conversion
+        // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        std::ptrdiff_t len = (std::snprintf)(number_buffer.data(), number_buffer.size(), "%.*g", d, x);
+
+        // negative value indicates an error
+        JSON_ASSERT(len > 0);
+        // check if buffer was large enough
+        JSON_ASSERT(static_cast<std::size_t>(len) < number_buffer.size());
+
+        // erase thousands separator
+        if (thousands_sep != '\0')
+        {
+            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::remove returns an iterator, see https://github.com/nlohmann/json/issues/3081
+            const auto end = std::remove(number_buffer.begin(), number_buffer.begin() + len, thousands_sep);
+            std::fill(end, number_buffer.end(), '\0');
+            JSON_ASSERT((end - number_buffer.begin()) <= len);
+            len = (end - number_buffer.begin());
+        }
+
+        // convert decimal point to '.'
+        if (decimal_point != '\0' && decimal_point != '.')
+        {
+            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::find returns an iterator, see https://github.com/nlohmann/json/issues/3081
+            const auto dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
+            if (dec_pos != number_buffer.end())
+            {
+                *dec_pos = '.';
+            }
+        }
+
+        o->write_characters(number_buffer.data(), static_cast<std::size_t>(len));
+
+        // determine if we need to append ".0"
+        const bool value_is_int_like =
+            std::none_of(number_buffer.begin(), number_buffer.begin() + len + 1,
+                         [](char c)
+        {
+            return c == '.' || c == 'e';
+        });
+
+        if (value_is_int_like)
+        {
+            o->write_characters(".0", 2);
+        }
+    }
+
+    /*!
+    @brief check whether a string is UTF-8 encoded
+
+    The function checks each byte of a string whether it is UTF-8 encoded. The
+    result of the check is stored in the @a state parameter. The function must
+    be called initially with state 0 (accept). State 1 means the string must
+    be rejected, because the current byte is not allowed. If the string is
+    completely processed, but the state is non-zero, the string ended
+    prematurely; that is, the last byte indicated more bytes should have
+    followed.
+
+    @param[in,out] state  the state of the decoding
+    @param[in,out] codep  codepoint (valid only if resulting state is UTF8_ACCEPT)
+    @param[in] byte       next byte to decode
+    @return               new state
+
+    @note The function has been edited: a std::array is used.
+
+    @copyright Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+    @sa http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
+    */
+    static std::uint8_t decode(std::uint8_t& state, std::uint32_t& codep, const std::uint8_t byte) noexcept
+    {
+        static const std::array<std::uint8_t, 400> utf8d =
+        {
+            {
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7F
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9F
+                7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // A0..BF
+                8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C0..DF
+                0xA, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // E0..EF
+                0xB, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // F0..FF
+                0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
+                1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
+                1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
+                1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 // s7..s8
+            }
+        };
+
+        JSON_ASSERT(byte < utf8d.size());
+        const std::uint8_t type = utf8d[byte];
+
+        codep = (state != UTF8_ACCEPT)
+                ? (byte & 0x3fu) | (codep << 6u)
+                : (0xFFu >> type) & (byte);
+
+        const std::size_t index = 256u + (static_cast<size_t>(state) * 16u) + static_cast<size_t>(type);
+        JSON_ASSERT(index < utf8d.size());
+        state = utf8d[index];
+        return state;
+    }
+
+    /*
+     * Overload to make the compiler happy while it is instantiating
+     * dump_integer for number_unsigned_t.
+     * Must never be called.
+     */
+    number_unsigned_t remove_sign(number_unsigned_t x)
+    {
+        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        return x; // LCOV_EXCL_LINE
+    }
+
+    /*
+     * Helper function for dump_integer
+     *
+     * This function takes a negative signed integer and returns its absolute
+     * value as unsigned integer. The plus/minus shuffling is necessary as we can
+     * not directly remove the sign of an arbitrary signed integer as the
+     * absolute values of INT_MIN and INT_MAX are usually not the same. See
+     * #1708 for details.
+     */
+    number_unsigned_t remove_sign(number_integer_t x) noexcept
+    {
+        JSON_ASSERT(x < 0 && x < (std::numeric_limits<number_integer_t>::max)()); // NOLINT(misc-redundant-expression)
+        return static_cast<number_unsigned_t>(-(x + 1)) + 1;
+    }
+
+  private:
+    /// the output of the serializer
+    output_adapter_t<char> o = nullptr;
+
+    /// a (hopefully) large enough character buffer
+    std::array<char, 64> number_buffer{{}};
+
+    /// the locale
+    const std::lconv* loc = nullptr;
+    /// the locale's thousand separator character
+    const char thousands_sep = '\0';
+    /// the locale's decimal point character
+    const char decimal_point = '\0';
+
+    /// string buffer
+    std::array<char, 512> string_buffer{{}};
+
+    /// the indentation character
+    const char indent_char;
+    /// the indentation string
+    string_t indent_string;
+
+    /// error_handler how to react on decoding errors
+    const error_handler_t error_handler;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/value_t.hpp>
+
+// #include <nlohmann/json_fwd.hpp>
+
+// #include <nlohmann/ordered_map.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <functional> // equal_to, less
+#include <initializer_list> // initializer_list
+#include <iterator> // input_iterator_tag, iterator_traits
+#include <memory> // allocator
+#include <stdexcept> // for out_of_range
+#include <type_traits> // enable_if, is_convertible
+#include <utility> // pair
+#include <vector> // vector
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// ordered_map: a minimal map-like container that preserves insertion order
+/// for use within nlohmann::basic_json<ordered_map>
+template <class Key, class T, class IgnoredLess = std::less<Key>,
+          class Allocator = std::allocator<std::pair<const Key, T>>>
+                  struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>
+{
+    using key_type = Key;
+    using mapped_type = T;
+    using Container = std::vector<std::pair<const Key, T>, Allocator>;
+    using iterator = typename Container::iterator;
+    using const_iterator = typename Container::const_iterator;
+    using size_type = typename Container::size_type;
+    using value_type = typename Container::value_type;
+#ifdef JSON_HAS_CPP_14
+    using key_compare = std::equal_to<>;
+#else
+    using key_compare = std::equal_to<Key>;
+#endif
+
+    // Explicit constructors instead of `using Container::Container`
+    // otherwise older compilers choke on it (GCC <= 5.5, xcode <= 9.4)
+    ordered_map() noexcept(noexcept(Container())) : Container{} {}
+    explicit ordered_map(const Allocator& alloc) noexcept(noexcept(Container(alloc))) : Container{alloc} {}
+    template <class It>
+    ordered_map(It first, It last, const Allocator& alloc = Allocator())
+        : Container{first, last, alloc} {}
+    ordered_map(std::initializer_list<value_type> init, const Allocator& alloc = Allocator() )
+        : Container{init, alloc} {}
+
+    std::pair<iterator, bool> emplace(const key_type& key, T&& t)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return {it, false};
+            }
+        }
+        Container::emplace_back(key, std::forward<T>(t));
+        return {std::prev(this->end()), true};
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    std::pair<iterator, bool> emplace(KeyType && key, T && t)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return {it, false};
+            }
+        }
+        Container::emplace_back(std::forward<KeyType>(key), std::forward<T>(t));
+        return {std::prev(this->end()), true};
+    }
+
+    T& operator[](const key_type& key)
+    {
+        return emplace(key, T{}).first->second;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    T & operator[](KeyType && key)
+    {
+        return emplace(std::forward<KeyType>(key), T{}).first->second;
+    }
+
+    const T& operator[](const key_type& key) const
+    {
+        return at(key);
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    const T & operator[](KeyType && key) const
+    {
+        return at(std::forward<KeyType>(key));
+    }
+
+    T& at(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    T & at(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    const T& at(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    const T & at(KeyType && key) const // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    size_type erase(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                // Since we cannot move const Keys, re-construct them in place
+                for (auto next = it; ++next != this->end(); ++it)
+                {
+                    it->~value_type(); // Destroy but keep allocation
+                    new (&*it) value_type{std::move(*next)};
+                }
+                Container::pop_back();
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    size_type erase(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                // Since we cannot move const Keys, re-construct them in place
+                for (auto next = it; ++next != this->end(); ++it)
+                {
+                    it->~value_type(); // Destroy but keep allocation
+                    new (&*it) value_type{std::move(*next)};
+                }
+                Container::pop_back();
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator erase(iterator pos)
+    {
+        return erase(pos, std::next(pos));
+    }
+
+    iterator erase(iterator first, iterator last)
+    {
+        if (first == last)
+        {
+            return first;
+        }
+
+        const auto elements_affected = std::distance(first, last);
+        const auto offset = std::distance(Container::begin(), first);
+
+        // This is the start situation. We need to delete elements_affected
+        // elements (3 in this example: e, f, g), and need to return an
+        // iterator past the last deleted element (h in this example).
+        // Note that offset is the distance from the start of the vector
+        // to first. We will need this later.
+
+        // [ a, b, c, d, e, f, g, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // Since we cannot move const Keys, we re-construct them in place.
+        // We start at first and re-construct (viz. copy) the elements from
+        // the back of the vector. Example for first iteration:
+
+        //               ,--------.
+        //               v        |   destroy e and re-construct with h
+        // [ a, b, c, d, e, f, g, h, i, j ]
+        //               ^        ^
+        //               it       it + elements_affected
+
+        for (auto it = first; std::next(it, elements_affected) != Container::end(); ++it)
+        {
+            it->~value_type(); // destroy but keep allocation
+            new (&*it) value_type{std::move(*std::next(it, elements_affected))}; // "move" next element to it
+        }
+
+        // [ a, b, c, d, h, i, j, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // remove the unneeded elements at the end of the vector
+        Container::resize(this->size() - static_cast<size_type>(elements_affected));
+
+        // [ a, b, c, d, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // first is now pointing past the last deleted element, but we cannot
+        // use this iterator, because it may have been invalidated by the
+        // resize call. Instead, we can return begin() + offset.
+        return Container::begin() + offset;
+    }
+
+    size_type count(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    size_type count(KeyType && key) const // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator find(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    iterator find(KeyType && key) // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    const_iterator find(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    std::pair<iterator, bool> insert( value_type&& value )
+    {
+        return emplace(value.first, std::move(value.second));
+    }
+
+    std::pair<iterator, bool> insert( const value_type& value )
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, value.first))
+            {
+                return {it, false};
+            }
+        }
+        Container::push_back(value);
+        return {--this->end(), true};
+    }
+
+    template<typename InputIt>
+    using require_input_iter = typename std::enable_if<std::is_convertible<typename std::iterator_traits<InputIt>::iterator_category,
+            std::input_iterator_tag>::value>::type;
+
+    template<typename InputIt, typename = require_input_iter<InputIt>>
+    void insert(InputIt first, InputIt last)
+    {
+        for (auto it = first; it != last; ++it)
+        {
+            insert(*it);
+        }
+    }
+
+private:
+    JSON_NO_UNIQUE_ADDRESS key_compare m_compare = key_compare();
+};
+
+NLOHMANN_JSON_NAMESPACE_END
+
+
+#if defined(JSON_HAS_CPP_17)
+    #if JSON_HAS_STATIC_RTTI
+        #include <any>
+    #endif
+    #include <string_view>
+#endif
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/*!
+@brief a class to store JSON values
+
+@internal
+@invariant The member variables @a m_value and @a m_type have the following
+relationship:
+- If `m_type == value_t::object`, then `m_value.object != nullptr`.
+- If `m_type == value_t::array`, then `m_value.array != nullptr`.
+- If `m_type == value_t::string`, then `m_value.string != nullptr`.
+The invariants are checked by member function assert_invariant().
+
+@note ObjectType trick from https://stackoverflow.com/a/9860911
+@endinternal
+
+@since version 1.0.0
+
+@nosubgrouping
+*/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+    : public ::nlohmann::detail::json_base_class<CustomBaseClass>
+{
+  private:
+    template<detail::value_t> friend struct detail::external_constructor;
+
+    template<typename>
+    friend class ::nlohmann::json_pointer;
+    // can be restored when json_pointer backwards compatibility is removed
+    // friend ::nlohmann::json_pointer<StringType>;
+
+    template<typename BasicJsonType, typename InputType>
+    friend class ::nlohmann::detail::parser;
+    friend ::nlohmann::detail::serializer<basic_json>;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::iter_impl;
+    template<typename BasicJsonType, typename CharType>
+    friend class ::nlohmann::detail::binary_writer;
+    template<typename BasicJsonType, typename InputType, typename SAX>
+    friend class ::nlohmann::detail::binary_reader;
+    template<typename BasicJsonType, typename InputAdapterType>
+    friend class ::nlohmann::detail::json_sax_dom_parser;
+    template<typename BasicJsonType, typename InputAdapterType>
+    friend class ::nlohmann::detail::json_sax_dom_callback_parser;
+    friend class ::nlohmann::detail::exception;
+
+    /// workaround type for MSVC
+    using basic_json_t = NLOHMANN_BASIC_JSON_TPL;
+    using json_base_class_t = ::nlohmann::detail::json_base_class<CustomBaseClass>;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // convenience aliases for types residing in namespace detail;
+    using lexer = ::nlohmann::detail::lexer_base<basic_json>;
+
+    template<typename InputAdapterType>
+    static ::nlohmann::detail::parser<basic_json, InputAdapterType> parser(
+        InputAdapterType adapter,
+        detail::parser_callback_t<basic_json>cb = nullptr,
+        const bool allow_exceptions = true,
+        const bool ignore_comments = false
+                                 )
+    {
+        return ::nlohmann::detail::parser<basic_json, InputAdapterType>(std::move(adapter),
+                std::move(cb), allow_exceptions, ignore_comments);
+    }
+
+  private:
+    using primitive_iterator_t = ::nlohmann::detail::primitive_iterator_t;
+    template<typename BasicJsonType>
+    using internal_iterator = ::nlohmann::detail::internal_iterator<BasicJsonType>;
+    template<typename BasicJsonType>
+    using iter_impl = ::nlohmann::detail::iter_impl<BasicJsonType>;
+    template<typename Iterator>
+    using iteration_proxy = ::nlohmann::detail::iteration_proxy<Iterator>;
+    template<typename Base> using json_reverse_iterator = ::nlohmann::detail::json_reverse_iterator<Base>;
+
+    template<typename CharType>
+    using output_adapter_t = ::nlohmann::detail::output_adapter_t<CharType>;
+
+    template<typename InputType>
+    using binary_reader = ::nlohmann::detail::binary_reader<basic_json, InputType>;
+    template<typename CharType> using binary_writer = ::nlohmann::detail::binary_writer<basic_json, CharType>;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    using serializer = ::nlohmann::detail::serializer<basic_json>;
+
+  public:
+    using value_t = detail::value_t;
+    /// JSON Pointer, see @ref nlohmann::json_pointer
+    using json_pointer = ::nlohmann::json_pointer<StringType>;
+    template<typename T, typename SFINAE>
+    using json_serializer = JSONSerializer<T, SFINAE>;
+    /// how to treat decoding errors
+    using error_handler_t = detail::error_handler_t;
+    /// how to treat CBOR tags
+    using cbor_tag_handler_t = detail::cbor_tag_handler_t;
+    /// helper type for initializer lists of basic_json values
+    using initializer_list_t = std::initializer_list<detail::json_ref<basic_json>>;
+
+    using input_format_t = detail::input_format_t;
+    /// SAX interface type, see @ref nlohmann::json_sax
+    using json_sax_t = json_sax<basic_json>;
+
+    ////////////////
+    // exceptions //
+    ////////////////
+
+    /// @name exceptions
+    /// Classes to implement user-defined exceptions.
+    /// @{
+
+    using exception = detail::exception;
+    using parse_error = detail::parse_error;
+    using invalid_iterator = detail::invalid_iterator;
+    using type_error = detail::type_error;
+    using out_of_range = detail::out_of_range;
+    using other_error = detail::other_error;
+
+    /// @}
+
+    /////////////////////
+    // container types //
+    /////////////////////
+
+    /// @name container types
+    /// The canonic container types to use @ref basic_json like any other STL
+    /// container.
+    /// @{
+
+    /// the type of elements in a basic_json container
+    using value_type = basic_json;
+
+    /// the type of an element reference
+    using reference = value_type&;
+    /// the type of an element const reference
+    using const_reference = const value_type&;
+
+    /// a type to represent differences between iterators
+    using difference_type = std::ptrdiff_t;
+    /// a type to represent container sizes
+    using size_type = std::size_t;
+
+    /// the allocator type
+    using allocator_type = AllocatorType<basic_json>;
+
+    /// the type of an element pointer
+    using pointer = typename std::allocator_traits<allocator_type>::pointer;
+    /// the type of an element const pointer
+    using const_pointer = typename std::allocator_traits<allocator_type>::const_pointer;
+
+    /// an iterator for a basic_json container
+    using iterator = iter_impl<basic_json>;
+    /// a const iterator for a basic_json container
+    using const_iterator = iter_impl<const basic_json>;
+    /// a reverse iterator for a basic_json container
+    using reverse_iterator = json_reverse_iterator<typename basic_json::iterator>;
+    /// a const reverse iterator for a basic_json container
+    using const_reverse_iterator = json_reverse_iterator<typename basic_json::const_iterator>;
+
+    /// @}
+
+    /// @brief returns the allocator associated with the container
+    /// @sa https://json.nlohmann.me/api/basic_json/get_allocator/
+    static allocator_type get_allocator()
+    {
+        return allocator_type();
+    }
+
+    /// @brief returns version information on the library
+    /// @sa https://json.nlohmann.me/api/basic_json/meta/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json meta()
+    {
+        basic_json result;
+
+        result["copyright"] = "(C) 2013-2023 Niels Lohmann";
+        result["name"] = "JSON for Modern C++";
+        result["url"] = "https://github.com/nlohmann/json";
+        result["version"]["string"] =
+            detail::concat(std::to_string(NLOHMANN_JSON_VERSION_MAJOR), '.',
+                           std::to_string(NLOHMANN_JSON_VERSION_MINOR), '.',
+                           std::to_string(NLOHMANN_JSON_VERSION_PATCH));
+        result["version"]["major"] = NLOHMANN_JSON_VERSION_MAJOR;
+        result["version"]["minor"] = NLOHMANN_JSON_VERSION_MINOR;
+        result["version"]["patch"] = NLOHMANN_JSON_VERSION_PATCH;
+
+#ifdef _WIN32
+        result["platform"] = "win32";
+#elif defined __linux__
+        result["platform"] = "linux";
+#elif defined __APPLE__
+        result["platform"] = "apple";
+#elif defined __unix__
+        result["platform"] = "unix";
+#else
+        result["platform"] = "unknown";
+#endif
+
+#if defined(__ICC) || defined(__INTEL_COMPILER)
+        result["compiler"] = {{"family", "icc"}, {"version", __INTEL_COMPILER}};
+#elif defined(__clang__)
+        result["compiler"] = {{"family", "clang"}, {"version", __clang_version__}};
+#elif defined(__GNUC__) || defined(__GNUG__)
+        result["compiler"] = {{"family", "gcc"}, {"version", detail::concat(
+                    std::to_string(__GNUC__), '.',
+                    std::to_string(__GNUC_MINOR__), '.',
+                    std::to_string(__GNUC_PATCHLEVEL__))
+            }
+        };
+#elif defined(__HP_cc) || defined(__HP_aCC)
+        result["compiler"] = "hp"
+#elif defined(__IBMCPP__)
+        result["compiler"] = {{"family", "ilecpp"}, {"version", __IBMCPP__}};
+#elif defined(_MSC_VER)
+        result["compiler"] = {{"family", "msvc"}, {"version", _MSC_VER}};
+#elif defined(__PGI)
+        result["compiler"] = {{"family", "pgcpp"}, {"version", __PGI}};
+#elif defined(__SUNPRO_CC)
+        result["compiler"] = {{"family", "sunpro"}, {"version", __SUNPRO_CC}};
+#else
+        result["compiler"] = {{"family", "unknown"}, {"version", "unknown"}};
+#endif
+
+#if defined(_MSVC_LANG)
+        result["compiler"]["c++"] = std::to_string(_MSVC_LANG);
+#elif defined(__cplusplus)
+        result["compiler"]["c++"] = std::to_string(__cplusplus);
+#else
+        result["compiler"]["c++"] = "unknown";
+#endif
+        return result;
+    }
+
+    ///////////////////////////
+    // JSON value data types //
+    ///////////////////////////
+
+    /// @name JSON value data types
+    /// The data types to store a JSON value. These types are derived from
+    /// the template arguments passed to class @ref basic_json.
+    /// @{
+
+    /// @brief default object key comparator type
+    /// The actual object key comparator type (@ref object_comparator_t) may be
+    /// different.
+    /// @sa https://json.nlohmann.me/api/basic_json/default_object_comparator_t/
+#if defined(JSON_HAS_CPP_14)
+    // use of transparent comparator avoids unnecessary repeated construction of temporaries
+    // in functions involving lookup by key with types other than object_t::key_type (aka. StringType)
+    using default_object_comparator_t = std::less<>;
+#else
+    using default_object_comparator_t = std::less<StringType>;
+#endif
+
+    /// @brief a type for an object
+    /// @sa https://json.nlohmann.me/api/basic_json/object_t/
+    using object_t = ObjectType<StringType,
+          basic_json,
+          default_object_comparator_t,
+          AllocatorType<std::pair<const StringType,
+          basic_json>>>;
+
+    /// @brief a type for an array
+    /// @sa https://json.nlohmann.me/api/basic_json/array_t/
+    using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
+
+    /// @brief a type for a string
+    /// @sa https://json.nlohmann.me/api/basic_json/string_t/
+    using string_t = StringType;
+
+    /// @brief a type for a boolean
+    /// @sa https://json.nlohmann.me/api/basic_json/boolean_t/
+    using boolean_t = BooleanType;
+
+    /// @brief a type for a number (integer)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_integer_t/
+    using number_integer_t = NumberIntegerType;
+
+    /// @brief a type for a number (unsigned)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_unsigned_t/
+    using number_unsigned_t = NumberUnsignedType;
+
+    /// @brief a type for a number (floating-point)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_float_t/
+    using number_float_t = NumberFloatType;
+
+    /// @brief a type for a packed binary type
+    /// @sa https://json.nlohmann.me/api/basic_json/binary_t/
+    using binary_t = nlohmann::byte_container_with_subtype<BinaryType>;
+
+    /// @brief object key comparator type
+    /// @sa https://json.nlohmann.me/api/basic_json/object_comparator_t/
+    using object_comparator_t = detail::actual_object_comparator_t<basic_json>;
+
+    /// @}
+
+  private:
+
+    /// helper for exception-safe object creation
+    template<typename T, typename... Args>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    static T* create(Args&& ... args)
+    {
+        AllocatorType<T> alloc;
+        using AllocatorTraits = std::allocator_traits<AllocatorType<T>>;
+
+        auto deleter = [&](T * obj)
+        {
+            AllocatorTraits::deallocate(alloc, obj, 1);
+        };
+        std::unique_ptr<T, decltype(deleter)> obj(AllocatorTraits::allocate(alloc, 1), deleter);
+        AllocatorTraits::construct(alloc, obj.get(), std::forward<Args>(args)...);
+        JSON_ASSERT(obj != nullptr);
+        return obj.release();
+    }
+
+    ////////////////////////
+    // JSON value storage //
+    ////////////////////////
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief a JSON value
+
+    The actual storage for a JSON value of the @ref basic_json class. This
+    union combines the different storage types for the JSON value types
+    defined in @ref value_t.
+
+    JSON type | value_t type    | used type
+    --------- | --------------- | ------------------------
+    object    | object          | pointer to @ref object_t
+    array     | array           | pointer to @ref array_t
+    string    | string          | pointer to @ref string_t
+    boolean   | boolean         | @ref boolean_t
+    number    | number_integer  | @ref number_integer_t
+    number    | number_unsigned | @ref number_unsigned_t
+    number    | number_float    | @ref number_float_t
+    binary    | binary          | pointer to @ref binary_t
+    null      | null            | *no value is stored*
+
+    @note Variable-length types (objects, arrays, and strings) are stored as
+    pointers. The size of the union should not exceed 64 bits if the default
+    value types are used.
+
+    @since version 1.0.0
+    */
+    union json_value
+    {
+        /// object (stored with pointer to save storage)
+        object_t* object;
+        /// array (stored with pointer to save storage)
+        array_t* array;
+        /// string (stored with pointer to save storage)
+        string_t* string;
+        /// binary (stored with pointer to save storage)
+        binary_t* binary;
+        /// boolean
+        boolean_t boolean;
+        /// number (integer)
+        number_integer_t number_integer;
+        /// number (unsigned integer)
+        number_unsigned_t number_unsigned;
+        /// number (floating-point)
+        number_float_t number_float;
+
+        /// default constructor (for null values)
+        json_value() = default;
+        /// constructor for booleans
+        json_value(boolean_t v) noexcept : boolean(v) {}
+        /// constructor for numbers (integer)
+        json_value(number_integer_t v) noexcept : number_integer(v) {}
+        /// constructor for numbers (unsigned)
+        json_value(number_unsigned_t v) noexcept : number_unsigned(v) {}
+        /// constructor for numbers (floating-point)
+        json_value(number_float_t v) noexcept : number_float(v) {}
+        /// constructor for empty values of a given type
+        json_value(value_t t)
+        {
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    object = create<object_t>();
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    array = create<array_t>();
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    string = create<string_t>("");
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    binary = create<binary_t>();
+                    break;
+                }
+
+                case value_t::boolean:
+                {
+                    boolean = static_cast<boolean_t>(false);
+                    break;
+                }
+
+                case value_t::number_integer:
+                {
+                    number_integer = static_cast<number_integer_t>(0);
+                    break;
+                }
+
+                case value_t::number_unsigned:
+                {
+                    number_unsigned = static_cast<number_unsigned_t>(0);
+                    break;
+                }
+
+                case value_t::number_float:
+                {
+                    number_float = static_cast<number_float_t>(0.0);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    break;
+                }
+
+                case value_t::discarded:
+                default:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    if (JSON_HEDLEY_UNLIKELY(t == value_t::null))
+                    {
+                        JSON_THROW(other_error::create(500, "961c151d2e87f2686a955a9be24d316f1362bf21 3.11.3", nullptr)); // LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+            }
+        }
+
+        /// constructor for strings
+        json_value(const string_t& value) : string(create<string_t>(value)) {}
+
+        /// constructor for rvalue strings
+        json_value(string_t&& value) : string(create<string_t>(std::move(value))) {}
+
+        /// constructor for objects
+        json_value(const object_t& value) : object(create<object_t>(value)) {}
+
+        /// constructor for rvalue objects
+        json_value(object_t&& value) : object(create<object_t>(std::move(value))) {}
+
+        /// constructor for arrays
+        json_value(const array_t& value) : array(create<array_t>(value)) {}
+
+        /// constructor for rvalue arrays
+        json_value(array_t&& value) : array(create<array_t>(std::move(value))) {}
+
+        /// constructor for binary arrays
+        json_value(const typename binary_t::container_type& value) : binary(create<binary_t>(value)) {}
+
+        /// constructor for rvalue binary arrays
+        json_value(typename binary_t::container_type&& value) : binary(create<binary_t>(std::move(value))) {}
+
+        /// constructor for binary arrays (internal type)
+        json_value(const binary_t& value) : binary(create<binary_t>(value)) {}
+
+        /// constructor for rvalue binary arrays (internal type)
+        json_value(binary_t&& value) : binary(create<binary_t>(std::move(value))) {}
+
+        void destroy(value_t t)
+        {
+            if (
+                (t == value_t::object && object == nullptr) ||
+                (t == value_t::array && array == nullptr) ||
+                (t == value_t::string && string == nullptr) ||
+                (t == value_t::binary && binary == nullptr)
+            )
+            {
+                //not initialized (e.g. due to exception in the ctor)
+                return;
+            }
+            if (t == value_t::array || t == value_t::object)
+            {
+                // flatten the current json_value to a heap-allocated stack
+                std::vector<basic_json> stack;
+
+                // move the top-level items to stack
+                if (t == value_t::array)
+                {
+                    stack.reserve(array->size());
+                    std::move(array->begin(), array->end(), std::back_inserter(stack));
+                }
+                else
+                {
+                    stack.reserve(object->size());
+                    for (auto&& it : *object)
+                    {
+                        stack.push_back(std::move(it.second));
+                    }
+                }
+
+                while (!stack.empty())
+                {
+                    // move the last item to local variable to be processed
+                    basic_json current_item(std::move(stack.back()));
+                    stack.pop_back();
+
+                    // if current_item is array/object, move
+                    // its children to the stack to be processed later
+                    if (current_item.is_array())
+                    {
+                        std::move(current_item.m_data.m_value.array->begin(), current_item.m_data.m_value.array->end(), std::back_inserter(stack));
+
+                        current_item.m_data.m_value.array->clear();
+                    }
+                    else if (current_item.is_object())
+                    {
+                        for (auto&& it : *current_item.m_data.m_value.object)
+                        {
+                            stack.push_back(std::move(it.second));
+                        }
+
+                        current_item.m_data.m_value.object->clear();
+                    }
+
+                    // it's now safe that current_item get destructed
+                    // since it doesn't have any children
+                }
+            }
+
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    AllocatorType<object_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, object);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, object, 1);
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    AllocatorType<array_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, array);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, array, 1);
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, string, 1);
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, binary, 1);
+                    break;
+                }
+
+                case value_t::null:
+                case value_t::boolean:
+                case value_t::number_integer:
+                case value_t::number_unsigned:
+                case value_t::number_float:
+                case value_t::discarded:
+                default:
+                {
+                    break;
+                }
+            }
+        }
+    };
+
+  private:
+    /*!
+    @brief checks the class invariants
+
+    This function asserts the class invariants. It needs to be called at the
+    end of every constructor to make sure that created objects respect the
+    invariant. Furthermore, it has to be called each time the type of a JSON
+    value is changed, because the invariant expresses a relationship between
+    @a m_type and @a m_value.
+
+    Furthermore, the parent relation is checked for arrays and objects: If
+    @a check_parents true and the value is an array or object, then the
+    container's elements must have the current value as parent.
+
+    @param[in] check_parents  whether the parent relation should be checked.
+               The value is true by default and should only be set to false
+               during destruction of objects when the invariant does not
+               need to hold.
+    */
+    void assert_invariant(bool check_parents = true) const noexcept
+    {
+        JSON_ASSERT(m_data.m_type != value_t::object || m_data.m_value.object != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::array || m_data.m_value.array != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::string || m_data.m_value.string != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::binary || m_data.m_value.binary != nullptr);
+
+#if JSON_DIAGNOSTICS
+        JSON_TRY
+        {
+            // cppcheck-suppress assertWithSideEffect
+            JSON_ASSERT(!check_parents || !is_structured() || std::all_of(begin(), end(), [this](const basic_json & j)
+            {
+                return j.m_parent == this;
+            }));
+        }
+        JSON_CATCH(...) {} // LCOV_EXCL_LINE
+#endif
+        static_cast<void>(check_parents);
+    }
+
+    void set_parents()
+    {
+#if JSON_DIAGNOSTICS
+        switch (m_data.m_type)
+        {
+            case value_t::array:
+            {
+                for (auto& element : *m_data.m_value.array)
+                {
+                    element.m_parent = this;
+                }
+                break;
+            }
+
+            case value_t::object:
+            {
+                for (auto& element : *m_data.m_value.object)
+                {
+                    element.second.m_parent = this;
+                }
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                break;
+        }
+#endif
+    }
+
+    iterator set_parents(iterator it, typename iterator::difference_type count_set_parents)
+    {
+#if JSON_DIAGNOSTICS
+        for (typename iterator::difference_type i = 0; i < count_set_parents; ++i)
+        {
+            (it + i)->m_parent = this;
+        }
+#else
+        static_cast<void>(count_set_parents);
+#endif
+        return it;
+    }
+
+    reference set_parent(reference j, std::size_t old_capacity = static_cast<std::size_t>(-1))
+    {
+#if JSON_DIAGNOSTICS
+        if (old_capacity != static_cast<std::size_t>(-1))
+        {
+            // see https://github.com/nlohmann/json/issues/2838
+            JSON_ASSERT(type() == value_t::array);
+            if (JSON_HEDLEY_UNLIKELY(m_data.m_value.array->capacity() != old_capacity))
+            {
+                // capacity has changed: update all parents
+                set_parents();
+                return j;
+            }
+        }
+
+        // ordered_json uses a vector internally, so pointers could have
+        // been invalidated; see https://github.com/nlohmann/json/issues/2962
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning(push )
+#pragma warning(disable : 4127) // ignore warning to replace if with if constexpr
+#endif
+        if (detail::is_ordered_map<object_t>::value)
+        {
+            set_parents();
+            return j;
+        }
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning( pop )
+#endif
+
+        j.m_parent = this;
+#else
+        static_cast<void>(j);
+        static_cast<void>(old_capacity);
+#endif
+        return j;
+    }
+
+  public:
+    //////////////////////////
+    // JSON parser callback //
+    //////////////////////////
+
+    /// @brief parser event types
+    /// @sa https://json.nlohmann.me/api/basic_json/parse_event_t/
+    using parse_event_t = detail::parse_event_t;
+
+    /// @brief per-element parser callback type
+    /// @sa https://json.nlohmann.me/api/basic_json/parser_callback_t/
+    using parser_callback_t = detail::parser_callback_t<basic_json>;
+
+    //////////////////
+    // constructors //
+    //////////////////
+
+    /// @name constructors and destructors
+    /// Constructors of class @ref basic_json, copy/move constructor, copy
+    /// assignment, static functions creating objects, and the destructor.
+    /// @{
+
+    /// @brief create an empty value with a given type
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(const value_t v)
+        : m_data(v)
+    {
+        assert_invariant();
+    }
+
+    /// @brief create a null object
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(std::nullptr_t = nullptr) noexcept // NOLINT(bugprone-exception-escape)
+        : basic_json(value_t::null)
+    {
+        assert_invariant();
+    }
+
+    /// @brief create a JSON value from compatible types
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < typename CompatibleType,
+               typename U = detail::uncvref_t<CompatibleType>,
+               detail::enable_if_t <
+                   !detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
+    basic_json(CompatibleType && val) noexcept(noexcept( // NOLINT(bugprone-forwarding-reference-overload,bugprone-exception-escape)
+                JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
+                                           std::forward<CompatibleType>(val))))
+    {
+        JSONSerializer<U>::to_json(*this, std::forward<CompatibleType>(val));
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief create a JSON value from an existing one
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value&& !std::is_same<basic_json, BasicJsonType>::value, int > = 0 >
+    basic_json(const BasicJsonType& val)
+#if JSON_DIAGNOSTIC_POSITIONS
+        : start_position(val.start_position),
+          end_position(val.end_position)
+#endif
+    {
+        using other_boolean_t = typename BasicJsonType::boolean_t;
+        using other_number_float_t = typename BasicJsonType::number_float_t;
+        using other_number_integer_t = typename BasicJsonType::number_integer_t;
+        using other_number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+        using other_string_t = typename BasicJsonType::string_t;
+        using other_object_t = typename BasicJsonType::object_t;
+        using other_array_t = typename BasicJsonType::array_t;
+        using other_binary_t = typename BasicJsonType::binary_t;
+
+        switch (val.type())
+        {
+            case value_t::boolean:
+                JSONSerializer<other_boolean_t>::to_json(*this, val.template get<other_boolean_t>());
+                break;
+            case value_t::number_float:
+                JSONSerializer<other_number_float_t>::to_json(*this, val.template get<other_number_float_t>());
+                break;
+            case value_t::number_integer:
+                JSONSerializer<other_number_integer_t>::to_json(*this, val.template get<other_number_integer_t>());
+                break;
+            case value_t::number_unsigned:
+                JSONSerializer<other_number_unsigned_t>::to_json(*this, val.template get<other_number_unsigned_t>());
+                break;
+            case value_t::string:
+                JSONSerializer<other_string_t>::to_json(*this, val.template get_ref<const other_string_t&>());
+                break;
+            case value_t::object:
+                JSONSerializer<other_object_t>::to_json(*this, val.template get_ref<const other_object_t&>());
+                break;
+            case value_t::array:
+                JSONSerializer<other_array_t>::to_json(*this, val.template get_ref<const other_array_t&>());
+                break;
+            case value_t::binary:
+                JSONSerializer<other_binary_t>::to_json(*this, val.template get_ref<const other_binary_t&>());
+                break;
+            case value_t::null:
+                *this = nullptr;
+                break;
+            case value_t::discarded:
+                m_data.m_type = value_t::discarded;
+                break;
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+        JSON_ASSERT(m_data.m_type == val.type());
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief create a container (array or object) from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(initializer_list_t init,
+               bool type_deduction = true,
+               value_t manual_type = value_t::array)
+    {
+        // check if each element is an array with two elements whose first
+        // element is a string
+        bool is_an_object = std::all_of(init.begin(), init.end(),
+                                        [](const detail::json_ref<basic_json>& element_ref)
+        {
+            // The cast is to ensure op[size_type] is called, bearing in mind size_type may not be int;
+            // (many string types can be constructed from 0 via its null-pointer guise, so we get a
+            // broken call to op[key_type], the wrong semantics and a 4804 warning on Windows)
+            return element_ref->is_array() && element_ref->size() == 2 && (*element_ref)[static_cast<size_type>(0)].is_string();
+        });
+
+        // adjust type if type deduction is not wanted
+        if (!type_deduction)
+        {
+            // if array is wanted, do not create an object though possible
+            if (manual_type == value_t::array)
+            {
+                is_an_object = false;
+            }
+
+            // if object is wanted but impossible, throw an exception
+            if (JSON_HEDLEY_UNLIKELY(manual_type == value_t::object && !is_an_object))
+            {
+                JSON_THROW(type_error::create(301, "cannot create object from initializer list", nullptr));
+            }
+        }
+
+        if (is_an_object)
+        {
+            // the initializer list is a list of pairs -> create object
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+
+            for (auto& element_ref : init)
+            {
+                auto element = element_ref.moved_or_copied();
+                m_data.m_value.object->emplace(
+                    std::move(*((*element.m_data.m_value.array)[0].m_data.m_value.string)),
+                    std::move((*element.m_data.m_value.array)[1]));
+            }
+        }
+        else
+        {
+            // the initializer list describes an array -> create array
+            m_data.m_type = value_t::array;
+            m_data.m_value.array = create<array_t>(init.begin(), init.end());
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief explicitly create a binary array (without subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = init;
+        return res;
+    }
+
+    /// @brief explicitly create a binary array (with subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init, typename binary_t::subtype_type subtype)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = binary_t(init, subtype);
+        return res;
+    }
+
+    /// @brief explicitly create a binary array
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = std::move(init);
+        return res;
+    }
+
+    /// @brief explicitly create a binary array (with subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init, typename binary_t::subtype_type subtype)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = binary_t(std::move(init), subtype);
+        return res;
+    }
+
+    /// @brief explicitly create an array from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/array/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json array(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::array);
+    }
+
+    /// @brief explicitly create an object from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/object/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json object(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::object);
+    }
+
+    /// @brief construct an array with count copies of given value
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(size_type cnt, const basic_json& val):
+        m_data{cnt, val}
+    {
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief construct a JSON container given an iterator range
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < class InputIT, typename std::enable_if <
+                   std::is_same<InputIT, typename basic_json_t::iterator>::value ||
+                   std::is_same<InputIT, typename basic_json_t::const_iterator>::value, int >::type = 0 >
+    basic_json(InputIT first, InputIT last) // NOLINT(performance-unnecessary-value-param)
+    {
+        JSON_ASSERT(first.m_object != nullptr);
+        JSON_ASSERT(last.m_object != nullptr);
+
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(201, "iterators are not compatible", nullptr));
+        }
+
+        // copy type from first iterator
+        m_data.m_type = first.m_object->m_data.m_type;
+
+        // check if iterator range is complete for primitive values
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!first.m_it.primitive_iterator.is_begin()
+                                         || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", first.m_object));
+                }
+                break;
+            }
+
+            case value_t::null:
+            case value_t::object:
+            case value_t::array:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                break;
+        }
+
+        switch (m_data.m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_data.m_value.number_integer = first.m_object->m_data.m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value.number_unsigned = first.m_object->m_data.m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value.number_float = first.m_object->m_data.m_value.number_float;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value.boolean = first.m_object->m_data.m_value.boolean;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value = *first.m_object->m_data.m_value.string;
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_data.m_value.object = create<object_t>(first.m_it.object_iterator,
+                                        last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value.array = create<array_t>(first.m_it.array_iterator,
+                                                       last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value = *first.m_object->m_data.m_value.binary;
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(invalid_iterator::create(206, detail::concat("cannot construct with iterators from ", first.m_object->type_name()), first.m_object));
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    ///////////////////////////////////////
+    // other constructors and destructor //
+    ///////////////////////////////////////
+
+    template<typename JsonRef,
+             detail::enable_if_t<detail::conjunction<detail::is_json_ref<JsonRef>,
+                                 std::is_same<typename JsonRef::value_type, basic_json>>::value, int> = 0 >
+    basic_json(const JsonRef& ref) : basic_json(ref.moved_or_copied()) {}
+
+    /// @brief copy constructor
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(const basic_json& other)
+        : json_base_class_t(other)
+#if JSON_DIAGNOSTIC_POSITIONS
+        , start_position(other.start_position)
+        , end_position(other.end_position)
+#endif
+    {
+        m_data.m_type = other.m_data.m_type;
+        // check of passed value is valid
+        other.assert_invariant();
+
+        switch (m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_data.m_value = *other.m_data.m_value.object;
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value = *other.m_data.m_value.array;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value = *other.m_data.m_value.string;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value = other.m_data.m_value.boolean;
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                m_data.m_value = other.m_data.m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value = other.m_data.m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value = other.m_data.m_value.number_float;
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value = *other.m_data.m_value.binary;
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                break;
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief move constructor
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(basic_json&& other) noexcept
+        : json_base_class_t(std::forward<json_base_class_t>(other)),
+          m_data(std::move(other.m_data)) // cppcheck-suppress[accessForwarded] TODO check
+#if JSON_DIAGNOSTIC_POSITIONS
+        , start_position(other.start_position) // cppcheck-suppress[accessForwarded] TODO check
+        , end_position(other.end_position) // cppcheck-suppress[accessForwarded] TODO check
+#endif
+    {
+        // check that passed value is valid
+        other.assert_invariant(false); // cppcheck-suppress[accessForwarded]
+
+        // invalidate payload
+        other.m_data.m_type = value_t::null;
+        other.m_data.m_value = {};
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        other.start_position = std::string::npos;
+        other.end_position = std::string::npos;
+#endif
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief copy assignment
+    /// @sa https://json.nlohmann.me/api/basic_json/operator=/
+    basic_json& operator=(basic_json other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value&&
+        std::is_nothrow_move_assignable<json_base_class_t>::value
+    )
+    {
+        // check that passed value is valid
+        other.assert_invariant();
+
+        using std::swap;
+        swap(m_data.m_type, other.m_data.m_type);
+        swap(m_data.m_value, other.m_data.m_value);
+
+#if JSON_DIAGNOSTIC_POSITIONS
+        swap(start_position, other.start_position);
+        swap(end_position, other.end_position);
+#endif
+
+        json_base_class_t::operator=(std::move(other));
+
+        set_parents();
+        assert_invariant();
+        return *this;
+    }
+
+    /// @brief destructor
+    /// @sa https://json.nlohmann.me/api/basic_json/~basic_json/
+    ~basic_json() noexcept
+    {
+        assert_invariant(false);
+    }
+
+    /// @}
+
+  public:
+    ///////////////////////
+    // object inspection //
+    ///////////////////////
+
+    /// @name object inspection
+    /// Functions to inspect the type of a JSON value.
+    /// @{
+
+    /// @brief serialization
+    /// @sa https://json.nlohmann.me/api/basic_json/dump/
+    string_t dump(const int indent = -1,
+                  const char indent_char = ' ',
+                  const bool ensure_ascii = false,
+                  const error_handler_t error_handler = error_handler_t::strict) const
+    {
+        string_t result;
+        serializer s(detail::output_adapter<char, string_t>(result), indent_char, error_handler);
+
+        if (indent >= 0)
+        {
+            s.dump(*this, true, ensure_ascii, static_cast<unsigned int>(indent));
+        }
+        else
+        {
+            s.dump(*this, false, ensure_ascii, 0);
+        }
+
+        return result;
+    }
+
+    /// @brief return the type of the JSON value (explicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/type/
+    constexpr value_t type() const noexcept
+    {
+        return m_data.m_type;
+    }
+
+    /// @brief return whether type is primitive
+    /// @sa https://json.nlohmann.me/api/basic_json/is_primitive/
+    constexpr bool is_primitive() const noexcept
+    {
+        return is_null() || is_string() || is_boolean() || is_number() || is_binary();
+    }
+
+    /// @brief return whether type is structured
+    /// @sa https://json.nlohmann.me/api/basic_json/is_structured/
+    constexpr bool is_structured() const noexcept
+    {
+        return is_array() || is_object();
+    }
+
+    /// @brief return whether value is null
+    /// @sa https://json.nlohmann.me/api/basic_json/is_null/
+    constexpr bool is_null() const noexcept
+    {
+        return m_data.m_type == value_t::null;
+    }
+
+    /// @brief return whether value is a boolean
+    /// @sa https://json.nlohmann.me/api/basic_json/is_boolean/
+    constexpr bool is_boolean() const noexcept
+    {
+        return m_data.m_type == value_t::boolean;
+    }
+
+    /// @brief return whether value is a number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number/
+    constexpr bool is_number() const noexcept
+    {
+        return is_number_integer() || is_number_float();
+    }
+
+    /// @brief return whether value is an integer number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_integer/
+    constexpr bool is_number_integer() const noexcept
+    {
+        return m_data.m_type == value_t::number_integer || m_data.m_type == value_t::number_unsigned;
+    }
+
+    /// @brief return whether value is an unsigned integer number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_unsigned/
+    constexpr bool is_number_unsigned() const noexcept
+    {
+        return m_data.m_type == value_t::number_unsigned;
+    }
+
+    /// @brief return whether value is a floating-point number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_float/
+    constexpr bool is_number_float() const noexcept
+    {
+        return m_data.m_type == value_t::number_float;
+    }
+
+    /// @brief return whether value is an object
+    /// @sa https://json.nlohmann.me/api/basic_json/is_object/
+    constexpr bool is_object() const noexcept
+    {
+        return m_data.m_type == value_t::object;
+    }
+
+    /// @brief return whether value is an array
+    /// @sa https://json.nlohmann.me/api/basic_json/is_array/
+    constexpr bool is_array() const noexcept
+    {
+        return m_data.m_type == value_t::array;
+    }
+
+    /// @brief return whether value is a string
+    /// @sa https://json.nlohmann.me/api/basic_json/is_string/
+    constexpr bool is_string() const noexcept
+    {
+        return m_data.m_type == value_t::string;
+    }
+
+    /// @brief return whether value is a binary array
+    /// @sa https://json.nlohmann.me/api/basic_json/is_binary/
+    constexpr bool is_binary() const noexcept
+    {
+        return m_data.m_type == value_t::binary;
+    }
+
+    /// @brief return whether value is discarded
+    /// @sa https://json.nlohmann.me/api/basic_json/is_discarded/
+    constexpr bool is_discarded() const noexcept
+    {
+        return m_data.m_type == value_t::discarded;
+    }
+
+    /// @brief return the type of the JSON value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_value_t/
+    constexpr operator value_t() const noexcept
+    {
+        return m_data.m_type;
+    }
+
+    /// @}
+
+  private:
+    //////////////////
+    // value access //
+    //////////////////
+
+    /// get a boolean (explicit)
+    boolean_t get_impl(boolean_t* /*unused*/) const
+    {
+        if (JSON_HEDLEY_LIKELY(is_boolean()))
+        {
+            return m_data.m_value.boolean;
+        }
+
+        JSON_THROW(type_error::create(302, detail::concat("type must be boolean, but is ", type_name()), this));
+    }
+
+    /// get a pointer to the value (object)
+    object_t* get_impl_ptr(object_t* /*unused*/) noexcept
+    {
+        return is_object() ? m_data.m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (object)
+    constexpr const object_t* get_impl_ptr(const object_t* /*unused*/) const noexcept
+    {
+        return is_object() ? m_data.m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    array_t* get_impl_ptr(array_t* /*unused*/) noexcept
+    {
+        return is_array() ? m_data.m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    constexpr const array_t* get_impl_ptr(const array_t* /*unused*/) const noexcept
+    {
+        return is_array() ? m_data.m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    string_t* get_impl_ptr(string_t* /*unused*/) noexcept
+    {
+        return is_string() ? m_data.m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    constexpr const string_t* get_impl_ptr(const string_t* /*unused*/) const noexcept
+    {
+        return is_string() ? m_data.m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    boolean_t* get_impl_ptr(boolean_t* /*unused*/) noexcept
+    {
+        return is_boolean() ? &m_data.m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    constexpr const boolean_t* get_impl_ptr(const boolean_t* /*unused*/) const noexcept
+    {
+        return is_boolean() ? &m_data.m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    number_integer_t* get_impl_ptr(number_integer_t* /*unused*/) noexcept
+    {
+        return m_data.m_type == value_t::number_integer ? &m_data.m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    constexpr const number_integer_t* get_impl_ptr(const number_integer_t* /*unused*/) const noexcept
+    {
+        return m_data.m_type == value_t::number_integer ? &m_data.m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    number_unsigned_t* get_impl_ptr(number_unsigned_t* /*unused*/) noexcept
+    {
+        return is_number_unsigned() ? &m_data.m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    constexpr const number_unsigned_t* get_impl_ptr(const number_unsigned_t* /*unused*/) const noexcept
+    {
+        return is_number_unsigned() ? &m_data.m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    number_float_t* get_impl_ptr(number_float_t* /*unused*/) noexcept
+    {
+        return is_number_float() ? &m_data.m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    constexpr const number_float_t* get_impl_ptr(const number_float_t* /*unused*/) const noexcept
+    {
+        return is_number_float() ? &m_data.m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    binary_t* get_impl_ptr(binary_t* /*unused*/) noexcept
+    {
+        return is_binary() ? m_data.m_value.binary : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    constexpr const binary_t* get_impl_ptr(const binary_t* /*unused*/) const noexcept
+    {
+        return is_binary() ? m_data.m_value.binary : nullptr;
+    }
+
+    /*!
+    @brief helper function to implement get_ref()
+
+    This function helps to implement get_ref() without code duplication for
+    const and non-const overloads
+
+    @tparam ThisType will be deduced as `basic_json` or `const basic_json`
+
+    @throw type_error.303 if ReferenceType does not match underlying value
+    type of the current JSON
+    */
+    template<typename ReferenceType, typename ThisType>
+    static ReferenceType get_ref_impl(ThisType& obj)
+    {
+        // delegate the call to get_ptr<>()
+        auto* ptr = obj.template get_ptr<typename std::add_pointer<ReferenceType>::type>();
+
+        if (JSON_HEDLEY_LIKELY(ptr != nullptr))
+        {
+            return *ptr;
+        }
+
+        JSON_THROW(type_error::create(303, detail::concat("incompatible ReferenceType for get_ref, actual type is ", obj.type_name()), &obj));
+    }
+
+  public:
+    /// @name value access
+    /// Direct access to the stored value of a JSON value.
+    /// @{
+
+    /// @brief get a pointer value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get_ptr() noexcept -> decltype(std::declval<basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>()
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+    /// @brief get a pointer value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
+    template < typename PointerType, typename std::enable_if <
+                   std::is_pointer<PointerType>::value&&
+                   std::is_const<typename std::remove_pointer<PointerType>::type>::value, int >::type = 0 >
+    constexpr auto get_ptr() const noexcept -> decltype(std::declval<const basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>() const
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+  private:
+    /*!
+    @brief get a value (explicit)
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    ValueType ret;
+    JSONSerializer<ValueType>::from_json(*this, ret);
+    return ret;
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json,
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `void from_json(const basic_json&, ValueType&)`, and
+    - @ref json_serializer<ValueType> does not have a `from_json()` method of
+      the form `ValueType from_json(const basic_json&)`
+
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,get__ValueType_const}
+
+    @since version 2.1.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   detail::is_default_constructible<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get_impl(detail::priority_tag<0> /*unused*/) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), std::declval<ValueType&>())))
+    {
+        auto ret = ValueType();
+        JSONSerializer<ValueType>::from_json(*this, ret);
+        return ret;
+    }
+
+    /*!
+    @brief get a value (explicit); special case
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is **not** [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and **not** [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    return JSONSerializer<ValueType>::from_json(*this);
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json and
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `ValueType from_json(const basic_json&)`
+
+    @note If @ref json_serializer<ValueType> has both overloads of
+    `from_json()`, this one is chosen.
+
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @since version 2.1.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   detail::has_non_default_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get_impl(detail::priority_tag<1> /*unused*/) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>())))
+    {
+        return JSONSerializer<ValueType>::from_json(*this);
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads converts the current @ref basic_json in a different
+    @ref basic_json type
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this, converted into @a BasicJsonType
+
+    @complexity Depending on the implementation of the called `from_json()`
+                method.
+
+    @since version 3.2.0
+    */
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value,
+                   int > = 0 >
+    BasicJsonType get_impl(detail::priority_tag<2> /*unused*/) const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads avoids a lot of template boilerplate, it can be seen as the
+    identity method
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this
+
+    @complexity Constant.
+
+    @since version 2.1.0
+    */
+    template<typename BasicJsonType,
+             detail::enable_if_t<
+                 std::is_same<BasicJsonType, basic_json_t>::value,
+                 int> = 0>
+    basic_json get_impl(detail::priority_tag<3> /*unused*/) const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+    @copydoc get()
+    */
+    template<typename PointerType,
+             detail::enable_if_t<
+                 std::is_pointer<PointerType>::value,
+                 int> = 0>
+    constexpr auto get_impl(detail::priority_tag<4> /*unused*/) const noexcept
+    -> decltype(std::declval<const basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+  public:
+    /*!
+    @brief get a (pointer) value (explicit)
+
+    Performs explicit type conversion between the JSON value and a compatible value if required.
+
+    - If the requested type is a pointer to the internally stored JSON value that pointer is returned.
+    No copies are made.
+
+    - If the requested type is the current @ref basic_json, or a different @ref basic_json convertible
+    from the current @ref basic_json.
+
+    - Otherwise the value is converted by calling the @ref json_serializer<ValueType> `from_json()`
+    method.
+
+    @tparam ValueTypeCV the provided value type
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @tparam ValueType if necessary
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws if conversion is required
+
+    @since version 2.1.0
+    */
+    template < typename ValueTypeCV, typename ValueType = detail::uncvref_t<ValueTypeCV>>
+#if defined(JSON_HAS_CPP_14)
+    constexpr
+#endif
+    auto get() const noexcept(
+    noexcept(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {})))
+    -> decltype(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {}))
+    {
+        // we cannot static_assert on ValueTypeCV being non-const, because
+        // there is support for get<const basic_json_t>(), which is why we
+        // still need the uncvref
+        static_assert(!std::is_reference<ValueTypeCV>::value,
+                      "get() cannot be used with reference types, you might want to use get_ref()");
+        return get_impl<ValueType>(detail::priority_tag<4> {});
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+
+    Explicit pointer access to the internally stored JSON value. No copies are
+    made.
+
+    @warning The pointer becomes invalid if the underlying JSON object
+    changes.
+
+    @tparam PointerType pointer type; must be a pointer to @ref array_t, @ref
+    object_t, @ref string_t, @ref boolean_t, @ref number_integer_t,
+    @ref number_unsigned_t, or @ref number_float_t.
+
+    @return pointer to the internally stored JSON value if the requested
+    pointer type @a PointerType fits to the JSON value; `nullptr` otherwise
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how pointers to internal values of a
+    JSON value can be requested. Note that no type conversions are made and a
+    `nullptr` is returned if the value and the requested pointer type does not
+    match.,get__PointerType}
+
+    @sa see @ref get_ptr() for explicit pointer-member access
+
+    @since version 1.0.0
+    */
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get() noexcept -> decltype(std::declval<basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+    /// @brief get a value (explicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_to/
+    template < typename ValueType,
+               detail::enable_if_t <
+                   !detail::is_basic_json<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType & get_to(ValueType& v) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<ValueType>::from_json(*this, v);
+        return v;
+    }
+
+    // specialization to allow calling get_to with a basic_json value
+    // see https://github.com/nlohmann/json/issues/2175
+    template<typename ValueType,
+             detail::enable_if_t <
+                 detail::is_basic_json<ValueType>::value,
+                 int> = 0>
+    ValueType & get_to(ValueType& v) const
+    {
+        v = *this;
+        return v;
+    }
+
+    template <
+        typename T, std::size_t N,
+        typename Array = T (&)[N], // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+        detail::enable_if_t <
+            detail::has_from_json<basic_json_t, Array>::value, int > = 0 >
+    Array get_to(T (&v)[N]) const // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    noexcept(noexcept(JSONSerializer<Array>::from_json(
+                          std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<Array>::from_json(*this, v);
+        return v;
+    }
+
+    /// @brief get a reference value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
+    template<typename ReferenceType, typename std::enable_if<
+                 std::is_reference<ReferenceType>::value, int>::type = 0>
+    ReferenceType get_ref()
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /// @brief get a reference value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
+    template < typename ReferenceType, typename std::enable_if <
+                   std::is_reference<ReferenceType>::value&&
+                   std::is_const<typename std::remove_reference<ReferenceType>::type>::value, int >::type = 0 >
+    ReferenceType get_ref() const
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /*!
+    @brief get a value (implicit)
+
+    Implicit type conversion between the JSON value and a compatible value.
+    The call is realized by calling @ref get() const.
+
+    @tparam ValueType non-pointer type compatible to the JSON value, for
+    instance `int` for JSON integer numbers, `bool` for JSON booleans, or
+    `std::vector` types for JSON arrays. The character type of @ref string_t
+    as well as an initializer list of this type is excluded to avoid
+    ambiguities as these types implicitly convert to `std::string`.
+
+    @return copy of the JSON value, converted to type @a ValueType
+
+    @throw type_error.302 in case passed type @a ValueType is incompatible
+    to the JSON value type (e.g., the JSON value is of type boolean, but a
+    string is requested); see example below
+
+    @complexity Linear in the size of the JSON value.
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,operator__ValueType}
+
+    @since version 1.0.0
+    */
+    template < typename ValueType, typename std::enable_if <
+                   detail::conjunction <
+                       detail::negation<std::is_pointer<ValueType>>,
+                       detail::negation<std::is_same<ValueType, std::nullptr_t>>,
+                       detail::negation<std::is_same<ValueType, detail::json_ref<basic_json>>>,
+                                        detail::negation<std::is_same<ValueType, typename string_t::value_type>>,
+                                        detail::negation<detail::is_basic_json<ValueType>>,
+                                        detail::negation<std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>>,
+#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) && _MSC_VER >= 1910 && _MSC_VER <= 1914))
+                                                detail::negation<std::is_same<ValueType, std::string_view>>,
+#endif
+#if defined(JSON_HAS_CPP_17) && JSON_HAS_STATIC_RTTI
+                                                detail::negation<std::is_same<ValueType, std::any>>,
+#endif
+                                                detail::is_detected_lazy<detail::get_template_function, const basic_json_t&, ValueType>
+                                                >::value, int >::type = 0 >
+                                        JSON_EXPLICIT operator ValueType() const
+    {
+        // delegate the call to get<>() const
+        return get<ValueType>();
+    }
+
+    /// @brief get a binary value
+    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
+    binary_t& get_binary()
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, detail::concat("type must be binary, but is ", type_name()), this));
+        }
+
+        return *get_ptr<binary_t*>();
+    }
+
+    /// @brief get a binary value
+    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
+    const binary_t& get_binary() const
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, detail::concat("type must be binary, but is ", type_name()), this));
+        }
+
+        return *get_ptr<const binary_t*>();
+    }
+
+    /// @}
+
+    ////////////////////
+    // element access //
+    ////////////////////
+
+    /// @name element access
+    /// Access to the JSON value.
+    /// @{
+
+    /// @brief access specified array element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(size_type idx)
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return set_parent(m_data.m_value.array->at(idx));
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            } // cppcheck-suppress[missingReturn]
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+    }
+
+    /// @brief access specified array element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(size_type idx) const
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return m_data.m_value.array->at(idx);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            } // cppcheck-suppress[missingReturn]
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(const typename object_t::key_type& key)
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(key);
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", key, "' not found"), this));
+        }
+        return set_parent(it->second);
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    reference at(KeyType && key)
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", string_t(std::forward<KeyType>(key)), "' not found"), this));
+        }
+        return set_parent(it->second);
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(const typename object_t::key_type& key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(key);
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", key, "' not found"), this));
+        }
+        return it->second;
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    const_reference at(KeyType && key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", string_t(std::forward<KeyType>(key)), "' not found"), this));
+        }
+        return it->second;
+    }
+
+    /// @brief access specified array element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](size_type idx)
+    {
+        // implicitly convert null value to an empty array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value.array = create<array_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // fill up array with null values if given idx is outside range
+            if (idx >= m_data.m_value.array->size())
+            {
+#if JSON_DIAGNOSTICS
+                // remember array size & capacity before resizing
+                const auto old_size = m_data.m_value.array->size();
+                const auto old_capacity = m_data.m_value.array->capacity();
+#endif
+                m_data.m_value.array->resize(idx + 1);
+
+#if JSON_DIAGNOSTICS
+                if (JSON_HEDLEY_UNLIKELY(m_data.m_value.array->capacity() != old_capacity))
+                {
+                    // capacity has changed: update all parents
+                    set_parents();
+                }
+                else
+                {
+                    // set parent for values added above
+                    set_parents(begin() + static_cast<typename iterator::difference_type>(old_size), static_cast<typename iterator::difference_type>(idx + 1 - old_size));
+                }
+#endif
+                assert_invariant();
+            }
+
+            return m_data.m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a numeric argument with ", type_name()), this));
+    }
+
+    /// @brief access specified array element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](size_type idx) const
+    {
+        // const operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            return m_data.m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a numeric argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](typename object_t::key_type key) // NOLINT(performance-unnecessary-value-param)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto result = m_data.m_value.object->emplace(std::move(key), nullptr);
+            return set_parent(result.first->second);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](const typename object_t::key_type& key) const
+    {
+        // const operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto it = m_data.m_value.object->find(key);
+            JSON_ASSERT(it != m_data.m_value.object->end());
+            return it->second;
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    // these two functions resolve a (const) char * ambiguity affecting Clang and MSVC
+    // (they seemingly cannot be constrained to resolve the ambiguity)
+    template<typename T>
+    reference operator[](T* key)
+    {
+        return operator[](typename object_t::key_type(key));
+    }
+
+    template<typename T>
+    const_reference operator[](T* key) const
+    {
+        return operator[](typename object_t::key_type(key));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    reference operator[](KeyType && key)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto result = m_data.m_value.object->emplace(std::forward<KeyType>(key), nullptr);
+            return set_parent(result.first->second);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    const_reference operator[](KeyType && key) const
+    {
+        // const operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+            JSON_ASSERT(it != m_data.m_value.object->end());
+            return it->second;
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+  private:
+    template<typename KeyType>
+    using is_comparable_with_object_key = detail::is_comparable <
+        object_comparator_t, const typename object_t::key_type&, KeyType >;
+
+    template<typename ValueType>
+    using value_return_type = std::conditional <
+        detail::is_c_string_uncvref<ValueType>::value,
+        string_t, typename std::decay<ValueType>::type >;
+
+  public:
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, detail::enable_if_t <
+                   !detail::is_transparent<object_comparator_t>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(const typename object_t::key_type& key, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(key);
+            if (it != end())
+            {
+                return it->template get<ValueType>();
+            }
+
+            return default_value;
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   !detail::is_transparent<object_comparator_t>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(const typename object_t::key_type& key, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(key);
+            if (it != end())
+            {
+                return it->template get<ReturnType>();
+            }
+
+            return std::forward<ValueType>(default_value);
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class KeyType, detail::enable_if_t <
+                   detail::is_transparent<object_comparator_t>::value
+                   && !detail::is_json_pointer<KeyType>::value
+                   && is_comparable_with_object_key<KeyType>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(KeyType && key, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(std::forward<KeyType>(key));
+            if (it != end())
+            {
+                return it->template get<ValueType>();
+            }
+
+            return default_value;
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class KeyType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_transparent<object_comparator_t>::value
+                   && !detail::is_json_pointer<KeyType>::value
+                   && is_comparable_with_object_key<KeyType>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(KeyType && key, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(std::forward<KeyType>(key));
+            if (it != end())
+            {
+                return it->template get<ReturnType>();
+            }
+
+            return std::forward<ValueType>(default_value);
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, detail::enable_if_t <
+                   detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(const json_pointer& ptr, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if pointer resolves a value, return it or use default value
+            JSON_TRY
+            {
+                return ptr.get_checked(this).template get<ValueType>();
+            }
+            JSON_INTERNAL_CATCH (out_of_range&)
+            {
+                return default_value;
+            }
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(const json_pointer& ptr, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if pointer resolves a value, return it or use default value
+            JSON_TRY
+            {
+                return ptr.get_checked(this).template get<ReturnType>();
+            }
+            JSON_INTERNAL_CATCH (out_of_range&)
+            {
+                return std::forward<ValueType>(default_value);
+            }
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    template < class ValueType, class BasicJsonType, detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    ValueType value(const ::nlohmann::json_pointer<BasicJsonType>& ptr, const ValueType& default_value) const
+    {
+        return value(ptr.convert(), default_value);
+    }
+
+    template < class ValueType, class BasicJsonType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    ReturnType value(const ::nlohmann::json_pointer<BasicJsonType>& ptr, ValueType && default_value) const
+    {
+        return value(ptr.convert(), std::forward<ValueType>(default_value));
+    }
+
+    /// @brief access the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/front/
+    reference front()
+    {
+        return *begin();
+    }
+
+    /// @brief access the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/front/
+    const_reference front() const
+    {
+        return *cbegin();
+    }
+
+    /// @brief access the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/back/
+    reference back()
+    {
+        auto tmp = end();
+        --tmp;
+        return *tmp;
+    }
+
+    /// @brief access the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/back/
+    const_reference back() const
+    {
+        auto tmp = cend();
+        --tmp;
+        return *tmp;
+    }
+
+    /// @brief remove element given an iterator
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template < class IteratorType, detail::enable_if_t <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int > = 0 >
+    IteratorType erase(IteratorType pos) // NOLINT(performance-unnecessary-value-param)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != pos.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        IteratorType result = end();
+
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!pos.m_it.primitive_iterator.is_begin()))
+                {
+                    JSON_THROW(invalid_iterator::create(205, "iterator out of range", this));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.string, 1);
+                    m_data.m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.binary, 1);
+                    m_data.m_value.binary = nullptr;
+                }
+
+                m_data.m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_data.m_value.object->erase(pos.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_data.m_value.array->erase(pos.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return result;
+    }
+
+    /// @brief remove elements given an iterator range
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template < class IteratorType, detail::enable_if_t <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int > = 0 >
+    IteratorType erase(IteratorType first, IteratorType last) // NOLINT(performance-unnecessary-value-param)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != first.m_object || this != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(203, "iterators do not fit current value", this));
+        }
+
+        IteratorType result = end();
+
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_LIKELY(!first.m_it.primitive_iterator.is_begin()
+                                       || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", this));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.string, 1);
+                    m_data.m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.binary, 1);
+                    m_data.m_value.binary = nullptr;
+                }
+
+                m_data.m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_data.m_value.object->erase(first.m_it.object_iterator,
+                                              last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_data.m_value.array->erase(first.m_it.array_iterator,
+                                             last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return result;
+    }
+
+  private:
+    template < typename KeyType, detail::enable_if_t <
+                   detail::has_erase_with_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    size_type erase_internal(KeyType && key)
+    {
+        // this erase only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return m_data.m_value.object->erase(std::forward<KeyType>(key));
+    }
+
+    template < typename KeyType, detail::enable_if_t <
+                   !detail::has_erase_with_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    size_type erase_internal(KeyType && key)
+    {
+        // this erase only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        const auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it != m_data.m_value.object->end())
+        {
+            m_data.m_value.object->erase(it);
+            return 1;
+        }
+        return 0;
+    }
+
+  public:
+
+    /// @brief remove element from a JSON object given a key
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    size_type erase(const typename object_t::key_type& key)
+    {
+        // the indirection via erase_internal() is added to avoid making this
+        // function a template and thus de-rank it during overload resolution
+        return erase_internal(key);
+    }
+
+    /// @brief remove element from a JSON object given a key
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    size_type erase(KeyType && key)
+    {
+        return erase_internal(std::forward<KeyType>(key));
+    }
+
+    /// @brief remove element from a JSON array given an index
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    void erase(const size_type idx)
+    {
+        // this erase only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            if (JSON_HEDLEY_UNLIKELY(idx >= size()))
+            {
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            }
+
+            m_data.m_value.array->erase(m_data.m_value.array->begin() + static_cast<difference_type>(idx));
+        }
+        else
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+    }
+
+    /// @}
+
+    ////////////
+    // lookup //
+    ////////////
+
+    /// @name lookup
+    /// @{
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    iterator find(const typename object_t::key_type& key)
+    {
+        auto result = end();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(key);
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    const_iterator find(const typename object_t::key_type& key) const
+    {
+        auto result = cend();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(key);
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    iterator find(KeyType && key)
+    {
+        auto result = end();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(std::forward<KeyType>(key));
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    const_iterator find(KeyType && key) const
+    {
+        auto result = cend();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(std::forward<KeyType>(key));
+        }
+
+        return result;
+    }
+
+    /// @brief returns the number of occurrences of a key in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/count/
+    size_type count(const typename object_t::key_type& key) const
+    {
+        // return 0 for all nonobject types
+        return is_object() ? m_data.m_value.object->count(key) : 0;
+    }
+
+    /// @brief returns the number of occurrences of a key in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/count/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    size_type count(KeyType && key) const
+    {
+        // return 0 for all nonobject types
+        return is_object() ? m_data.m_value.object->count(std::forward<KeyType>(key)) : 0;
+    }
+
+    /// @brief check the existence of an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    bool contains(const typename object_t::key_type& key) const
+    {
+        return is_object() && m_data.m_value.object->find(key) != m_data.m_value.object->end();
+    }
+
+    /// @brief check the existence of an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    bool contains(KeyType && key) const
+    {
+        return is_object() && m_data.m_value.object->find(std::forward<KeyType>(key)) != m_data.m_value.object->end();
+    }
+
+    /// @brief check the existence of an element in a JSON object given a JSON pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    bool contains(const json_pointer& ptr) const
+    {
+        return ptr.contains(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    bool contains(const typename ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.contains(this);
+    }
+
+    /// @}
+
+    ///////////////
+    // iterators //
+    ///////////////
+
+    /// @name iterators
+    /// @{
+
+    /// @brief returns an iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/begin/
+    iterator begin() noexcept
+    {
+        iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /// @brief returns an iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/begin/
+    const_iterator begin() const noexcept
+    {
+        return cbegin();
+    }
+
+    /// @brief returns a const iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/cbegin/
+    const_iterator cbegin() const noexcept
+    {
+        const_iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/end/
+    iterator end() noexcept
+    {
+        iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/end/
+    const_iterator end() const noexcept
+    {
+        return cend();
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/cend/
+    const_iterator cend() const noexcept
+    {
+        const_iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /// @brief returns an iterator to the reverse-beginning
+    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
+    reverse_iterator rbegin() noexcept
+    {
+        return reverse_iterator(end());
+    }
+
+    /// @brief returns an iterator to the reverse-beginning
+    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
+    const_reverse_iterator rbegin() const noexcept
+    {
+        return crbegin();
+    }
+
+    /// @brief returns an iterator to the reverse-end
+    /// @sa https://json.nlohmann.me/api/basic_json/rend/
+    reverse_iterator rend() noexcept
+    {
+        return reverse_iterator(begin());
+    }
+
+    /// @brief returns an iterator to the reverse-end
+    /// @sa https://json.nlohmann.me/api/basic_json/rend/
+    const_reverse_iterator rend() const noexcept
+    {
+        return crend();
+    }
+
+    /// @brief returns a const reverse iterator to the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/crbegin/
+    const_reverse_iterator crbegin() const noexcept
+    {
+        return const_reverse_iterator(cend());
+    }
+
+    /// @brief returns a const reverse iterator to one before the first
+    /// @sa https://json.nlohmann.me/api/basic_json/crend/
+    const_reverse_iterator crend() const noexcept
+    {
+        return const_reverse_iterator(cbegin());
+    }
+
+  public:
+    /// @brief wrapper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use @ref items() instead;
+    ///             that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<iterator> iterator_wrapper(reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /// @brief wrapper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
+    ///         version 4.0.0 of the library. Please use @ref items() instead;
+    ///         that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<const_iterator> iterator_wrapper(const_reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /// @brief helper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    iteration_proxy<iterator> items() noexcept
+    {
+        return iteration_proxy<iterator>(*this);
+    }
+
+    /// @brief helper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    iteration_proxy<const_iterator> items() const noexcept
+    {
+        return iteration_proxy<const_iterator>(*this);
+    }
+
+    /// @}
+
+    //////////////
+    // capacity //
+    //////////////
+
+    /// @name capacity
+    /// @{
+
+    /// @brief checks whether the container is empty.
+    /// @sa https://json.nlohmann.me/api/basic_json/empty/
+    bool empty() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return true;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::empty()
+                return m_data.m_value.array->empty();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::empty()
+                return m_data.m_value.object->empty();
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types are nonempty
+                return false;
+            }
+        }
+    }
+
+    /// @brief returns the number of elements
+    /// @sa https://json.nlohmann.me/api/basic_json/size/
+    size_type size() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return 0;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::size()
+                return m_data.m_value.array->size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::size()
+                return m_data.m_value.object->size();
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types have size 1
+                return 1;
+            }
+        }
+    }
+
+    /// @brief returns the maximum possible number of elements
+    /// @sa https://json.nlohmann.me/api/basic_json/max_size/
+    size_type max_size() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::array:
+            {
+                // delegate call to array_t::max_size()
+                return m_data.m_value.array->max_size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::max_size()
+                return m_data.m_value.object->max_size();
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types have max_size() == size()
+                return size();
+            }
+        }
+    }
+
+    /// @}
+
+    ///////////////
+    // modifiers //
+    ///////////////
+
+    /// @name modifiers
+    /// @{
+
+    /// @brief clears the contents
+    /// @sa https://json.nlohmann.me/api/basic_json/clear/
+    void clear() noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_data.m_value.number_integer = 0;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value.number_unsigned = 0;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value.number_float = 0.0;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value.boolean = false;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value.string->clear();
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value.binary->clear();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value.array->clear();
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_data.m_value.object->clear();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(basic_json&& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (move semantics)
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->push_back(std::move(val));
+        set_parent(m_data.m_value.array->back(), old_capacity);
+        // if val is moved from, basic_json move constructor marks it null, so we do not call the destructor
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(basic_json&& val)
+    {
+        push_back(std::move(val));
+        return *this;
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(const basic_json& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->push_back(val);
+        set_parent(m_data.m_value.array->back(), old_capacity);
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(const basic_json& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(const typename object_t::value_type& val)
+    {
+        // push_back only works for null objects or objects
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to object
+        auto res = m_data.m_value.object->insert(val);
+        set_parent(res.first->second);
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(const typename object_t::value_type& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(initializer_list_t init)
+    {
+        if (is_object() && init.size() == 2 && (*init.begin())->is_string())
+        {
+            basic_json&& key = init.begin()->moved_or_copied();
+            push_back(typename object_t::value_type(
+                          std::move(key.get_ref<string_t&>()), (init.begin() + 1)->moved_or_copied()));
+        }
+        else
+        {
+            push_back(basic_json(init));
+        }
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(initializer_list_t init)
+    {
+        push_back(init);
+        return *this;
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/emplace_back/
+    template<class... Args>
+    reference emplace_back(Args&& ... args)
+    {
+        // emplace_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(311, detail::concat("cannot use emplace_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->emplace_back(std::forward<Args>(args)...);
+        return set_parent(m_data.m_value.array->back(), old_capacity);
+    }
+
+    /// @brief add an object to an object if key does not exist
+    /// @sa https://json.nlohmann.me/api/basic_json/emplace/
+    template<class... Args>
+    std::pair<iterator, bool> emplace(Args&& ... args)
+    {
+        // emplace only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(311, detail::concat("cannot use emplace() with ", type_name()), this));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        auto res = m_data.m_value.object->emplace(std::forward<Args>(args)...);
+        set_parent(res.first->second);
+
+        // create result iterator and set iterator to the result of emplace
+        auto it = begin();
+        it.m_it.object_iterator = res.first;
+
+        // return pair of iterator and boolean
+        return {it, res.second};
+    }
+
+    /// Helper for insertion of an iterator
+    /// @note: This uses std::distance to support GCC 4.8,
+    ///        see https://github.com/nlohmann/json/pull/1257
+    template<typename... Args>
+    iterator insert_iterator(const_iterator pos, Args&& ... args) // NOLINT(performance-unnecessary-value-param)
+    {
+        iterator result(this);
+        JSON_ASSERT(m_data.m_value.array != nullptr);
+
+        auto insert_pos = std::distance(m_data.m_value.array->begin(), pos.m_it.array_iterator);
+        m_data.m_value.array->insert(pos.m_it.array_iterator, std::forward<Args>(args)...);
+        result.m_it.array_iterator = m_data.m_value.array->begin() + insert_pos;
+
+        // This could have been written as:
+        // result.m_it.array_iterator = m_data.m_value.array->insert(pos.m_it.array_iterator, cnt, val);
+        // but the return value of insert is missing in GCC 4.8, so it is written this way instead.
+
+        set_parents();
+        return result;
+    }
+
+    /// @brief inserts element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, const basic_json& val) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, val);
+        }
+
+        JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+    }
+
+    /// @brief inserts element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, basic_json&& val) // NOLINT(performance-unnecessary-value-param)
+    {
+        return insert(pos, val);
+    }
+
+    /// @brief inserts copies of element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, size_type cnt, const basic_json& val) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, cnt, val);
+        }
+
+        JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+    }
+
+    /// @brief inserts range of elements into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, const_iterator first, const_iterator last) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(first.m_object == this))
+        {
+            JSON_THROW(invalid_iterator::create(211, "passed iterators may not belong to container", this));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, first.m_it.array_iterator, last.m_it.array_iterator);
+    }
+
+    /// @brief inserts elements from initializer list into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, initializer_list_t ilist) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, ilist.begin(), ilist.end());
+    }
+
+    /// @brief inserts range of elements into object
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    void insert(const_iterator first, const_iterator last) // NOLINT(performance-unnecessary-value-param)
+    {
+        // insert only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterators first and last must point to objects", this));
+        }
+
+        m_data.m_value.object->insert(first.m_it.object_iterator, last.m_it.object_iterator);
+        set_parents();
+    }
+
+    /// @brief updates a JSON object from another object, overwriting existing keys
+    /// @sa https://json.nlohmann.me/api/basic_json/update/
+    void update(const_reference j, bool merge_objects = false)
+    {
+        update(j.begin(), j.end(), merge_objects);
+    }
+
+    /// @brief updates a JSON object from another object, overwriting existing keys
+    /// @sa https://json.nlohmann.me/api/basic_json/update/
+    void update(const_iterator first, const_iterator last, bool merge_objects = false) // NOLINT(performance-unnecessary-value-param)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(312, detail::concat("cannot use update() with ", type_name()), this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(type_error::create(312, detail::concat("cannot use update() with ", first.m_object->type_name()), first.m_object));
+        }
+
+        for (auto it = first; it != last; ++it)
+        {
+            if (merge_objects && it.value().is_object())
+            {
+                auto it2 = m_data.m_value.object->find(it.key());
+                if (it2 != m_data.m_value.object->end())
+                {
+                    it2->second.update(it.value(), true);
+                    continue;
+                }
+            }
+            m_data.m_value.object->operator[](it.key()) = it.value();
+#if JSON_DIAGNOSTICS
+            m_data.m_value.object->operator[](it.key()).m_parent = this;
+#endif
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(reference other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&& // NOLINT(cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        std::swap(m_data.m_type, other.m_data.m_type);
+        std::swap(m_data.m_value, other.m_data.m_value);
+
+        set_parents();
+        other.set_parents();
+        assert_invariant();
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    friend void swap(reference left, reference right) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&& // NOLINT(cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        left.swap(right);
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(array_t& other) // NOLINT(bugprone-exception-escape,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        // swap only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.array), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(array_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(object_t& other) // NOLINT(bugprone-exception-escape,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        // swap only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.object), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(object_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(string_t& other) // NOLINT(bugprone-exception-escape,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_string()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.string), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(string_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(binary_t& other) // NOLINT(bugprone-exception-escape,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(binary_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(typename binary_t::container_type& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(binary_t::container_type&) with ", type_name()), this));
+        }
+    }
+
+    /// @}
+
+    //////////////////////////////////////////
+    // lexicographical comparison operators //
+    //////////////////////////////////////////
+
+    /// @name lexicographical comparison operators
+    /// @{
+
+    // note parentheses around operands are necessary; see
+    // https://github.com/nlohmann/json/issues/1530
+#define JSON_IMPLEMENT_OPERATOR(op, null_result, unordered_result, default_result)                       \
+    const auto lhs_type = lhs.type();                                                                    \
+    const auto rhs_type = rhs.type();                                                                    \
+    \
+    if (lhs_type == rhs_type) /* NOLINT(readability/braces) */                                           \
+    {                                                                                                    \
+        switch (lhs_type)                                                                                \
+        {                                                                                                \
+            case value_t::array:                                                                         \
+                return (*lhs.m_data.m_value.array) op (*rhs.m_data.m_value.array);                                     \
+                \
+            case value_t::object:                                                                        \
+                return (*lhs.m_data.m_value.object) op (*rhs.m_data.m_value.object);                                   \
+                \
+            case value_t::null:                                                                          \
+                return (null_result);                                                                    \
+                \
+            case value_t::string:                                                                        \
+                return (*lhs.m_data.m_value.string) op (*rhs.m_data.m_value.string);                                   \
+                \
+            case value_t::boolean:                                                                       \
+                return (lhs.m_data.m_value.boolean) op (rhs.m_data.m_value.boolean);                                   \
+                \
+            case value_t::number_integer:                                                                \
+                return (lhs.m_data.m_value.number_integer) op (rhs.m_data.m_value.number_integer);                     \
+                \
+            case value_t::number_unsigned:                                                               \
+                return (lhs.m_data.m_value.number_unsigned) op (rhs.m_data.m_value.number_unsigned);                   \
+                \
+            case value_t::number_float:                                                                  \
+                return (lhs.m_data.m_value.number_float) op (rhs.m_data.m_value.number_float);                         \
+                \
+            case value_t::binary:                                                                        \
+                return (*lhs.m_data.m_value.binary) op (*rhs.m_data.m_value.binary);                                   \
+                \
+            case value_t::discarded:                                                                     \
+            default:                                                                                     \
+                return (unordered_result);                                                               \
+        }                                                                                                \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_float)                   \
+    {                                                                                                    \
+        return static_cast<number_float_t>(lhs.m_data.m_value.number_integer) op rhs.m_data.m_value.number_float;      \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_float && rhs_type == value_t::number_integer)                   \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_float op static_cast<number_float_t>(rhs.m_data.m_value.number_integer);      \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_float)                  \
+    {                                                                                                    \
+        return static_cast<number_float_t>(lhs.m_data.m_value.number_unsigned) op rhs.m_data.m_value.number_float;     \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_float && rhs_type == value_t::number_unsigned)                  \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_float op static_cast<number_float_t>(rhs.m_data.m_value.number_unsigned);     \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_integer)                \
+    {                                                                                                    \
+        return static_cast<number_integer_t>(lhs.m_data.m_value.number_unsigned) op rhs.m_data.m_value.number_integer; \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_unsigned)                \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_integer op static_cast<number_integer_t>(rhs.m_data.m_value.number_unsigned); \
+    }                                                                                                    \
+    else if(compares_unordered(lhs, rhs))\
+    {\
+        return (unordered_result);\
+    }\
+    \
+    return (default_result);
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // returns true if:
+    // - any operand is NaN and the other operand is of number type
+    // - any operand is discarded
+    // in legacy mode, discarded values are considered ordered if
+    // an operation is computed as an odd number of inverses of others
+    static bool compares_unordered(const_reference lhs, const_reference rhs, bool inverse = false) noexcept
+    {
+        if ((lhs.is_number_float() && std::isnan(lhs.m_data.m_value.number_float) && rhs.is_number())
+                || (rhs.is_number_float() && std::isnan(rhs.m_data.m_value.number_float) && lhs.is_number()))
+        {
+            return true;
+        }
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+        return (lhs.is_discarded() || rhs.is_discarded()) && !inverse;
+#else
+        static_cast<void>(inverse);
+        return lhs.is_discarded() || rhs.is_discarded();
+#endif
+    }
+
+  private:
+    bool compares_unordered(const_reference rhs, bool inverse = false) const noexcept
+    {
+        return compares_unordered(*this, rhs, inverse);
+    }
+
+  public:
+#if JSON_HAS_THREE_WAY_COMPARISON
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    bool operator==(const_reference rhs) const noexcept
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        const_reference lhs = *this;
+        JSON_IMPLEMENT_OPERATOR( ==, true, false, false)
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator==(ScalarType rhs) const noexcept
+    {
+        return *this == basic_json(rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    bool operator!=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !operator==(rhs);
+    }
+
+    /// @brief comparison: 3-way
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_spaceship/
+    std::partial_ordering operator<=>(const_reference rhs) const noexcept // *NOPAD*
+    {
+        const_reference lhs = *this;
+        // default_result is used if we cannot compare values. In that case,
+        // we compare types.
+        JSON_IMPLEMENT_OPERATOR(<=>, // *NOPAD*
+                                std::partial_ordering::equivalent,
+                                std::partial_ordering::unordered,
+                                lhs_type <=> rhs_type) // *NOPAD*
+    }
+
+    /// @brief comparison: 3-way
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_spaceship/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    std::partial_ordering operator<=>(ScalarType rhs) const noexcept // *NOPAD*
+    {
+        return *this <=> basic_json(rhs); // *NOPAD*
+    }
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    // all operators that are computed as an odd number of inverses of others
+    // need to be overloaded to emulate the legacy comparison behavior
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON)
+    bool operator<=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !(rhs < *this);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator<=(ScalarType rhs) const noexcept
+    {
+        return *this <= basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON)
+    bool operator>=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !(*this < rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator>=(ScalarType rhs) const noexcept
+    {
+        return *this >= basic_json(rhs);
+    }
+#endif
+#else
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    friend bool operator==(const_reference lhs, const_reference rhs) noexcept
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        JSON_IMPLEMENT_OPERATOR( ==, true, false, false)
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs == basic_json(rhs);
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) == rhs;
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    friend bool operator!=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(lhs == rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs != basic_json(rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) != rhs;
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    friend bool operator<(const_reference lhs, const_reference rhs) noexcept
+    {
+        // default_result is used if we cannot compare values. In that case,
+        // we compare types. Note we have to call the operator explicitly,
+        // because MSVC has problems otherwise.
+        JSON_IMPLEMENT_OPERATOR( <, false, false, operator<(lhs_type, rhs_type))
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs < basic_json(rhs);
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) < rhs;
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    friend bool operator<=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(rhs < lhs);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs <= basic_json(rhs);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) <= rhs;
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    friend bool operator>(const_reference lhs, const_reference rhs) noexcept
+    {
+        // double inverse
+        if (compares_unordered(lhs, rhs))
+        {
+            return false;
+        }
+        return !(lhs <= rhs);
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs > basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) > rhs;
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    friend bool operator>=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(lhs < rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs >= basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) >= rhs;
+    }
+#endif
+
+#undef JSON_IMPLEMENT_OPERATOR
+
+    /// @}
+
+    ///////////////////
+    // serialization //
+    ///////////////////
+
+    /// @name serialization
+    /// @{
+#ifndef JSON_NO_IO
+    /// @brief serialize to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const basic_json& j)
+    {
+        // read width member and use it as indentation parameter if nonzero
+        const bool pretty_print = o.width() > 0;
+        const auto indentation = pretty_print ? o.width() : 0;
+
+        // reset width to 0 for subsequent calls to this stream
+        o.width(0);
+
+        // do the actual serialization
+        serializer s(detail::output_adapter<char>(o), o.fill());
+        s.dump(j, pretty_print, false, static_cast<unsigned int>(indentation));
+        return o;
+    }
+
+    /// @brief serialize to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    /// @deprecated This function is deprecated since 3.0.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             operator<<(std::ostream&, const basic_json&) instead; that is,
+    ///             replace calls like `j >> o;` with `o << j;`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator<<(std::ostream&, const basic_json&))
+    friend std::ostream& operator>>(const basic_json& j, std::ostream& o)
+    {
+        return o << j;
+    }
+#endif  // JSON_NO_IO
+    /// @}
+
+    /////////////////////
+    // deserialization //
+    /////////////////////
+
+    /// @name deserialization
+    /// @{
+
+    /// @brief deserialize from a compatible input
+    /// @sa https://json.nlohmann.me/api/basic_json/parse/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(InputType&& i,
+                            parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::forward<InputType>(i)), std::move(cb), allow_exceptions, ignore_comments).parse(true, result); // cppcheck-suppress[accessMoved,accessForwarded]
+        return result;
+    }
+
+    /// @brief deserialize from a pair of character iterators
+    /// @sa https://json.nlohmann.me/api/basic_json/parse/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(IteratorType first,
+                            IteratorType last,
+                            parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::move(first), std::move(last)), std::move(cb), allow_exceptions, ignore_comments).parse(true, result); // cppcheck-suppress[accessMoved]
+        return result;
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, parse(ptr, ptr + len))
+    static basic_json parse(detail::span_input_adapter&& i,
+                            parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(i.get(), std::move(cb), allow_exceptions, ignore_comments).parse(true, result); // cppcheck-suppress[accessMoved]
+        return result;
+    }
+
+    /// @brief check if the input is valid JSON
+    /// @sa https://json.nlohmann.me/api/basic_json/accept/
+    template<typename InputType>
+    static bool accept(InputType&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::forward<InputType>(i)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /// @brief check if the input is valid JSON
+    /// @sa https://json.nlohmann.me/api/basic_json/accept/
+    template<typename IteratorType>
+    static bool accept(IteratorType first, IteratorType last,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::move(first), std::move(last)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, accept(ptr, ptr + len))
+    static bool accept(detail::span_input_adapter&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(i.get(), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    template <typename InputType, typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(InputType&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    template<class IteratorType, class SAX>
+    JSON_HEDLEY_NON_NULL(3)
+    static bool sax_parse(IteratorType first, IteratorType last, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    /// @deprecated This function is deprecated since 3.8.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             sax_parse(ptr, ptr + len) instead.
+    template <typename SAX>
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, sax_parse(ptr, ptr + len, ...))
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(detail::span_input_adapter&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = i.get();
+        return format == input_format_t::json
+               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+#ifndef JSON_NO_IO
+    /// @brief deserialize from stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
+    /// @deprecated This stream operator is deprecated since 3.0.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             operator>>(std::istream&, basic_json&) instead; that is,
+    ///             replace calls like `j << i;` with `i >> j;`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator>>(std::istream&, basic_json&))
+    friend std::istream& operator<<(basic_json& j, std::istream& i)
+    {
+        return operator>>(i, j);
+    }
+
+    /// @brief deserialize from stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
+    friend std::istream& operator>>(std::istream& i, basic_json& j)
+    {
+        parser(detail::input_adapter(i)).parse(false, j);
+        return i;
+    }
+#endif  // JSON_NO_IO
+    /// @}
+
+    ///////////////////////////
+    // convenience functions //
+    ///////////////////////////
+
+    /// @brief return the type as string
+    /// @sa https://json.nlohmann.me/api/basic_json/type_name/
+    JSON_HEDLEY_RETURNS_NON_NULL
+    const char* type_name() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+                return "null";
+            case value_t::object:
+                return "object";
+            case value_t::array:
+                return "array";
+            case value_t::string:
+                return "string";
+            case value_t::boolean:
+                return "boolean";
+            case value_t::binary:
+                return "binary";
+            case value_t::discarded:
+                return "discarded";
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            default:
+                return "number";
+        }
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    //////////////////////
+    // member variables //
+    //////////////////////
+
+    struct data
+    {
+        /// the type of the current element
+        value_t m_type = value_t::null;
+
+        /// the value of the current element
+        json_value m_value = {};
+
+        data(const value_t v)
+            : m_type(v), m_value(v)
+        {
+        }
+
+        data(size_type cnt, const basic_json& val)
+            : m_type(value_t::array)
+        {
+            m_value.array = create<array_t>(cnt, val);
+        }
+
+        data() noexcept = default;
+        data(data&&) noexcept = default;
+        data(const data&) noexcept = delete;
+        data& operator=(data&&) noexcept = delete;
+        data& operator=(const data&) noexcept = delete;
+
+        ~data() noexcept
+        {
+            m_value.destroy(m_type);
+        }
+    };
+
+    data m_data = {};
+
+#if JSON_DIAGNOSTICS
+    /// a pointer to a parent value (for debugging purposes)
+    basic_json* m_parent = nullptr;
+#endif
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    /// the start position of the value
+    std::size_t start_position = std::string::npos;
+    /// the end position of the value
+    std::size_t end_position = std::string::npos;
+  public:
+    constexpr std::size_t start_pos() const noexcept
+    {
+        return start_position;
+    }
+
+    constexpr std::size_t end_pos() const noexcept
+    {
+        return end_position;
+    }
+#endif
+
+    //////////////////////////////////////////
+    // binary serialization/deserialization //
+    //////////////////////////////////////////
+
+    /// @name binary serialization/deserialization support
+    /// @{
+
+  public:
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static std::vector<std::uint8_t> to_cbor(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_cbor(j, result);
+        return result;
+    }
+
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static void to_cbor(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_cbor(j);
+    }
+
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static void to_cbor(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_cbor(j);
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static std::vector<std::uint8_t> to_msgpack(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_msgpack(j, result);
+        return result;
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static void to_msgpack(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_msgpack(j);
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static void to_msgpack(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_msgpack(j);
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static std::vector<std::uint8_t> to_ubjson(const basic_json& j,
+            const bool use_size = false,
+            const bool use_type = false)
+    {
+        std::vector<std::uint8_t> result;
+        to_ubjson(j, result, use_size, use_type);
+        return result;
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static void to_ubjson(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static void to_ubjson(const basic_json& j, detail::output_adapter<char> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<char>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static std::vector<std::uint8_t> to_bjdata(const basic_json& j,
+            const bool use_size = false,
+            const bool use_type = false)
+    {
+        std::vector<std::uint8_t> result;
+        to_bjdata(j, result, use_size, use_type);
+        return result;
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static void to_bjdata(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type, true, true);
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static void to_bjdata(const basic_json& j, detail::output_adapter<char> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<char>(o).write_ubjson(j, use_size, use_type, true, true);
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static std::vector<std::uint8_t> to_bson(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_bson(j, result);
+        return result;
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static void to_bson(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_bson(j);
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static void to_bson(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_bson(j);
+    }
+
+    /// @brief create a JSON value from an input in CBOR format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in CBOR format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        return from_cbor(ptr, ptr + len, strict, allow_exceptions, tag_handler);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        auto ia = i.get();
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in MessagePack format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(InputType&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in MessagePack format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(IteratorType first, IteratorType last,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(const T* ptr, std::size_t len,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        return from_msgpack(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(detail::span_input_adapter&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = i.get();
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in UBJSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(InputType&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in UBJSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(IteratorType first, IteratorType last,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(const T* ptr, std::size_t len,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        return from_ubjson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(detail::span_input_adapter&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = i.get();
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BJData format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bjdata/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bjdata(InputType&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bjdata).sax_parse(input_format_t::bjdata, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BJData format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bjdata/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bjdata(IteratorType first, IteratorType last,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bjdata).sax_parse(input_format_t::bjdata, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        return from_bson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        auto ia = i.get();
+        detail::json_sax_dom_parser<basic_json, decltype(ia)> sdp(result, allow_exceptions);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict); // cppcheck-suppress[accessMoved]
+        return res ? result : basic_json(value_t::discarded);
+    }
+    /// @}
+
+    //////////////////////////
+    // JSON Pointer support //
+    //////////////////////////
+
+    /// @name JSON Pointer functions
+    /// @{
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](const json_pointer& ptr)
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    reference operator[](const ::nlohmann::json_pointer<BasicJsonType>& ptr)
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](const json_pointer& ptr) const
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    const_reference operator[](const ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(const json_pointer& ptr)
+    {
+        return ptr.get_checked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    reference at(const ::nlohmann::json_pointer<BasicJsonType>& ptr)
+    {
+        return ptr.get_checked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(const json_pointer& ptr) const
+    {
+        return ptr.get_checked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    const_reference at(const ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.get_checked(this);
+    }
+
+    /// @brief return flattened JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/flatten/
+    basic_json flatten() const
+    {
+        basic_json result(value_t::object);
+        json_pointer::flatten("", *this, result);
+        return result;
+    }
+
+    /// @brief unflatten a previously flattened JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/unflatten/
+    basic_json unflatten() const
+    {
+        return json_pointer::unflatten(*this);
+    }
+
+    /// @}
+
+    //////////////////////////
+    // JSON Patch functions //
+    //////////////////////////
+
+    /// @name JSON Patch functions
+    /// @{
+
+    /// @brief applies a JSON patch in-place without copying the object
+    /// @sa https://json.nlohmann.me/api/basic_json/patch/
+    void patch_inplace(const basic_json& json_patch)
+    {
+        basic_json& result = *this;
+        // the valid JSON Patch operations
+        enum class patch_operations {add, remove, replace, move, copy, test, invalid};
+
+        const auto get_op = [](const string_t& op)
+        {
+            if (op == "add")
+            {
+                return patch_operations::add;
+            }
+            if (op == "remove")
+            {
+                return patch_operations::remove;
+            }
+            if (op == "replace")
+            {
+                return patch_operations::replace;
+            }
+            if (op == "move")
+            {
+                return patch_operations::move;
+            }
+            if (op == "copy")
+            {
+                return patch_operations::copy;
+            }
+            if (op == "test")
+            {
+                return patch_operations::test;
+            }
+
+            return patch_operations::invalid;
+        };
+
+        // wrapper for "add" operation; add value at ptr
+        const auto operation_add = [&result](json_pointer & ptr, const basic_json & val)
+        {
+            // adding to the root of the target document means replacing it
+            if (ptr.empty())
+            {
+                result = val;
+                return;
+            }
+
+            // make sure the top element of the pointer exists
+            json_pointer const top_pointer = ptr.top();
+            if (top_pointer != ptr)
+            {
+                result.at(top_pointer);
+            }
+
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            // parent must exist when performing patch add per RFC6902 specs
+            basic_json& parent = result.at(ptr);
+
+            switch (parent.m_data.m_type)
+            {
+                case value_t::null:
+                case value_t::object:
+                {
+                    // use operator[] to add value
+                    parent[last_path] = val;
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    if (last_path == "-")
+                    {
+                        // special case: append to back
+                        parent.push_back(val);
+                    }
+                    else
+                    {
+                        const auto idx = json_pointer::template array_index<basic_json_t>(last_path);
+                        if (JSON_HEDLEY_UNLIKELY(idx > parent.size()))
+                        {
+                            // avoid undefined behavior
+                            JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), &parent));
+                        }
+
+                        // default case: insert add offset
+                        parent.insert(parent.begin() + static_cast<difference_type>(idx), val);
+                    }
+                    break;
+                }
+
+                // if there exists a parent it cannot be primitive
+                case value_t::string: // LCOV_EXCL_LINE
+                case value_t::boolean: // LCOV_EXCL_LINE
+                case value_t::number_integer: // LCOV_EXCL_LINE
+                case value_t::number_unsigned: // LCOV_EXCL_LINE
+                case value_t::number_float: // LCOV_EXCL_LINE
+                case value_t::binary: // LCOV_EXCL_LINE
+                case value_t::discarded: // LCOV_EXCL_LINE
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            }
+        };
+
+        // wrapper for "remove" operation; remove value at ptr
+        const auto operation_remove = [this, & result](json_pointer & ptr)
+        {
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            basic_json& parent = result.at(ptr);
+
+            // remove child
+            if (parent.is_object())
+            {
+                // perform range check
+                auto it = parent.find(last_path);
+                if (JSON_HEDLEY_LIKELY(it != parent.end()))
+                {
+                    parent.erase(it);
+                }
+                else
+                {
+                    JSON_THROW(out_of_range::create(403, detail::concat("key '", last_path, "' not found"), this));
+                }
+            }
+            else if (parent.is_array())
+            {
+                // note erase performs range check
+                parent.erase(json_pointer::template array_index<basic_json_t>(last_path));
+            }
+        };
+
+        // type check: top level value must be an array
+        if (JSON_HEDLEY_UNLIKELY(!json_patch.is_array()))
+        {
+            JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", &json_patch));
+        }
+
+        // iterate and apply the operations
+        for (const auto& val : json_patch)
+        {
+            // wrapper to get a value for an operation
+            const auto get_value = [&val](const string_t& op,
+                                          const string_t& member,
+                                          bool string_type) -> basic_json &
+            {
+                // find value
+                auto it = val.m_data.m_value.object->find(member);
+
+                // context-sensitive error message
+                const auto error_msg = (op == "op") ? "operation" : detail::concat("operation '", op, '\''); // NOLINT(bugprone-unused-local-non-trivial-variable)
+
+                // check if desired value is present
+                if (JSON_HEDLEY_UNLIKELY(it == val.m_data.m_value.object->end()))
+                {
+                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
+                    JSON_THROW(parse_error::create(105, 0, detail::concat(error_msg, " must have member '", member, "'"), &val));
+                }
+
+                // check if result is of type string
+                if (JSON_HEDLEY_UNLIKELY(string_type && !it->second.is_string()))
+                {
+                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
+                    JSON_THROW(parse_error::create(105, 0, detail::concat(error_msg, " must have string member '", member, "'"), &val));
+                }
+
+                // no error: return value
+                return it->second;
+            };
+
+            // type check: every element of the array must be an object
+            if (JSON_HEDLEY_UNLIKELY(!val.is_object()))
+            {
+                JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", &val));
+            }
+
+            // collect mandatory members
+            const auto op = get_value("op", "op", true).template get<string_t>();
+            const auto path = get_value(op, "path", true).template get<string_t>();
+            json_pointer ptr(path);
+
+            switch (get_op(op))
+            {
+                case patch_operations::add:
+                {
+                    operation_add(ptr, get_value("add", "value", false));
+                    break;
+                }
+
+                case patch_operations::remove:
+                {
+                    operation_remove(ptr);
+                    break;
+                }
+
+                case patch_operations::replace:
+                {
+                    // the "path" location must exist - use at()
+                    result.at(ptr) = get_value("replace", "value", false);
+                    break;
+                }
+
+                case patch_operations::move:
+                {
+                    const auto from_path = get_value("move", "from", true).template get<string_t>();
+                    json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json const v = result.at(from_ptr);
+
+                    // The move operation is functionally identical to a
+                    // "remove" operation on the "from" location, followed
+                    // immediately by an "add" operation at the target
+                    // location with the value that was just removed.
+                    operation_remove(from_ptr);
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::copy:
+                {
+                    const auto from_path = get_value("copy", "from", true).template get<string_t>();
+                    const json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json const v = result.at(from_ptr);
+
+                    // The copy is functionally identical to an "add"
+                    // operation at the target location using the value
+                    // specified in the "from" member.
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::test:
+                {
+                    bool success = false;
+                    JSON_TRY
+                    {
+                        // check if "value" matches the one at "path"
+                        // the "path" location must exist - use at()
+                        success = (result.at(ptr) == get_value("test", "value", false));
+                    }
+                    JSON_INTERNAL_CATCH (out_of_range&)
+                    {
+                        // ignore out of range errors: success remains false
+                    }
+
+                    // throw an exception if test fails
+                    if (JSON_HEDLEY_UNLIKELY(!success))
+                    {
+                        JSON_THROW(other_error::create(501, detail::concat("unsuccessful: ", val.dump()), &val));
+                    }
+
+                    break;
+                }
+
+                case patch_operations::invalid:
+                default:
+                {
+                    // op must be "add", "remove", "replace", "move", "copy", or
+                    // "test"
+                    JSON_THROW(parse_error::create(105, 0, detail::concat("operation value '", op, "' is invalid"), &val));
+                }
+            }
+        }
+    }
+
+    /// @brief applies a JSON patch to a copy of the current object
+    /// @sa https://json.nlohmann.me/api/basic_json/patch/
+    basic_json patch(const basic_json& json_patch) const
+    {
+        basic_json result = *this;
+        result.patch_inplace(json_patch);
+        return result;
+    }
+
+    /// @brief creates a diff as a JSON patch
+    /// @sa https://json.nlohmann.me/api/basic_json/diff/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json diff(const basic_json& source, const basic_json& target,
+                           const string_t& path = "")
+    {
+        // the patch
+        basic_json result(value_t::array);
+
+        // if the values are the same, return empty patch
+        if (source == target)
+        {
+            return result;
+        }
+
+        if (source.type() != target.type())
+        {
+            // different types: replace value
+            result.push_back(
+            {
+                {"op", "replace"}, {"path", path}, {"value", target}
+            });
+            return result;
+        }
+
+        switch (source.type())
+        {
+            case value_t::array:
+            {
+                // first pass: traverse common elements
+                std::size_t i = 0;
+                while (i < source.size() && i < target.size())
+                {
+                    // recursive call to compare array values at index i
+                    auto temp_diff = diff(source[i], target[i], detail::concat<string_t>(path, '/', detail::to_string<string_t>(i)));
+                    result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    ++i;
+                }
+
+                // We now reached the end of at least one array
+                // in a second pass, traverse the remaining elements
+
+                // remove my remaining elements
+                const auto end_index = static_cast<difference_type>(result.size());
+                while (i < source.size())
+                {
+                    // add operations in reverse order to avoid invalid
+                    // indices
+                    result.insert(result.begin() + end_index, object(
+                    {
+                        {"op", "remove"},
+                        {"path", detail::concat<string_t>(path, '/', detail::to_string<string_t>(i))}
+                    }));
+                    ++i;
+                }
+
+                // add other remaining elements
+                while (i < target.size())
+                {
+                    result.push_back(
+                    {
+                        {"op", "add"},
+                        {"path", detail::concat<string_t>(path, "/-")},
+                        {"value", target[i]}
+                    });
+                    ++i;
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // first pass: traverse this object's elements
+                for (auto it = source.cbegin(); it != source.cend(); ++it)
+                {
+                    // escape the key name to be used in a JSON patch
+                    const auto path_key = detail::concat<string_t>(path, '/', detail::escape(it.key()));
+
+                    if (target.find(it.key()) != target.end())
+                    {
+                        // recursive call to compare object values at key it
+                        auto temp_diff = diff(it.value(), target[it.key()], path_key);
+                        result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    }
+                    else
+                    {
+                        // found a key that is not in o -> remove it
+                        result.push_back(object(
+                        {
+                            {"op", "remove"}, {"path", path_key}
+                        }));
+                    }
+                }
+
+                // second pass: traverse other object's elements
+                for (auto it = target.cbegin(); it != target.cend(); ++it)
+                {
+                    if (source.find(it.key()) == source.end())
+                    {
+                        // found a key that is not in this -> add it
+                        const auto path_key = detail::concat<string_t>(path, '/', detail::escape(it.key()));
+                        result.push_back(
+                        {
+                            {"op", "add"}, {"path", path_key},
+                            {"value", it.value()}
+                        });
+                    }
+                }
+
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // both primitive type: replace value
+                result.push_back(
+                {
+                    {"op", "replace"}, {"path", path}, {"value", target}
+                });
+                break;
+            }
+        }
+
+        return result;
+    }
+    /// @}
+
+    ////////////////////////////////
+    // JSON Merge Patch functions //
+    ////////////////////////////////
+
+    /// @name JSON Merge Patch functions
+    /// @{
+
+    /// @brief applies a JSON Merge Patch
+    /// @sa https://json.nlohmann.me/api/basic_json/merge_patch/
+    void merge_patch(const basic_json& apply_patch)
+    {
+        if (apply_patch.is_object())
+        {
+            if (!is_object())
+            {
+                *this = object();
+            }
+            for (auto it = apply_patch.begin(); it != apply_patch.end(); ++it)
+            {
+                if (it.value().is_null())
+                {
+                    erase(it.key());
+                }
+                else
+                {
+                    operator[](it.key()).merge_patch(it.value());
+                }
+            }
+        }
+        else
+        {
+            *this = apply_patch;
+        }
+    }
+
+    /// @}
+};
+
+/// @brief user-defined to_string function for JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/to_string/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+std::string to_string(const NLOHMANN_BASIC_JSON_TPL& j)
+{
+    return j.dump();
+}
+
+inline namespace literals
+{
+inline namespace json_literals
+{
+
+/// @brief user-defined string literal for JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json/
+JSON_HEDLEY_NON_NULL(1)
+#if !defined(JSON_HEDLEY_GCC_VERSION) || JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0)
+    inline nlohmann::json operator ""_json(const char* s, std::size_t n)
+#else
+    inline nlohmann::json operator "" _json(const char* s, std::size_t n)
+#endif
+{
+    return nlohmann::json::parse(s, s + n);
+}
+
+/// @brief user-defined string literal for JSON pointer
+/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json_pointer/
+JSON_HEDLEY_NON_NULL(1)
+#if !defined(JSON_HEDLEY_GCC_VERSION) || JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0)
+    inline nlohmann::json::json_pointer operator ""_json_pointer(const char* s, std::size_t n)
+#else
+    inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
+#endif
+{
+    return nlohmann::json::json_pointer(std::string(s, n));
+}
+
+}  // namespace json_literals
+}  // namespace literals
+NLOHMANN_JSON_NAMESPACE_END
+
+///////////////////////
+// nonmember support //
+///////////////////////
+
+namespace std // NOLINT(cert-dcl58-cpp)
+{
+
+/// @brief hash value for JSON objects
+/// @sa https://json.nlohmann.me/api/basic_json/std_hash/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct hash<nlohmann::NLOHMANN_BASIC_JSON_TPL> // NOLINT(cert-dcl58-cpp)
+{
+    std::size_t operator()(const nlohmann::NLOHMANN_BASIC_JSON_TPL& j) const
+    {
+        return nlohmann::detail::hash(j);
+    }
+};
+
+// specialization for std::less<value_t>
+template<>
+struct less< ::nlohmann::detail::value_t> // do not remove the space after '<', see https://github.com/nlohmann/json/pull/679
+{
+    /*!
+    @brief compare two value_t enum values
+    @since version 3.0.0
+    */
+    bool operator()(::nlohmann::detail::value_t lhs,
+                    ::nlohmann::detail::value_t rhs) const noexcept
+    {
+#if JSON_HAS_THREE_WAY_COMPARISON
+        return std::is_lt(lhs <=> rhs); // *NOPAD*
+#else
+        return ::nlohmann::detail::operator<(lhs, rhs);
+#endif
+    }
+};
+
+// C++20 prohibit function specialization in the std namespace.
+#ifndef JSON_HAS_CPP_20
+
+/// @brief exchanges the values of two JSON objects
+/// @sa https://json.nlohmann.me/api/basic_json/std_swap/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC_JSON_TPL& j2) noexcept(  // NOLINT(readability-inconsistent-declaration-parameter-name, cert-dcl58-cpp)
+    is_nothrow_move_constructible<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value&&                          // NOLINT(misc-redundant-expression,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    is_nothrow_move_assignable<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value)
+{
+    j1.swap(j2);
+}
+
+#endif
+
+}  // namespace std
+
+#if JSON_USE_GLOBAL_UDLS
+    #if !defined(JSON_HEDLEY_GCC_VERSION) || JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0)
+        using nlohmann::literals::json_literals::operator ""_json; // NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+        using nlohmann::literals::json_literals::operator ""_json_pointer; //NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+    #else
+        using nlohmann::literals::json_literals::operator "" _json; // NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+        using nlohmann::literals::json_literals::operator "" _json_pointer; //NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+    #endif
+#endif
+
+// #include <nlohmann/detail/macro_unscope.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// restore clang diagnostic settings
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+
+// clean up
+#undef JSON_ASSERT
+#undef JSON_INTERNAL_CATCH
+#undef JSON_THROW
+#undef JSON_PRIVATE_UNLESS_TESTED
+#undef NLOHMANN_BASIC_JSON_TPL_DECLARATION
+#undef NLOHMANN_BASIC_JSON_TPL
+#undef JSON_EXPLICIT
+#undef NLOHMANN_CAN_CALL_STD_FUNC_IMPL
+#undef JSON_INLINE_VARIABLE
+#undef JSON_NO_UNIQUE_ADDRESS
+#undef JSON_DISABLE_ENUM_SERIALIZATION
+#undef JSON_USE_GLOBAL_UDLS
+
+#ifndef JSON_TEST_KEEP_MACROS
+    #undef JSON_CATCH
+    #undef JSON_TRY
+    #undef JSON_HAS_CPP_11
+    #undef JSON_HAS_CPP_14
+    #undef JSON_HAS_CPP_17
+    #undef JSON_HAS_CPP_20
+    #undef JSON_HAS_FILESYSTEM
+    #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+    #undef JSON_HAS_THREE_WAY_COMPARISON
+    #undef JSON_HAS_RANGES
+    #undef JSON_HAS_STATIC_RTTI
+    #undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+#endif
+
+// #include <nlohmann/thirdparty/hedley/hedley_undef.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#undef JSON_HEDLEY_ALWAYS_INLINE
+#undef JSON_HEDLEY_ARM_VERSION
+#undef JSON_HEDLEY_ARM_VERSION_CHECK
+#undef JSON_HEDLEY_ARRAY_PARAM
+#undef JSON_HEDLEY_ASSUME
+#undef JSON_HEDLEY_BEGIN_C_DECLS
+#undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#undef JSON_HEDLEY_CLANG_HAS_WARNING
+#undef JSON_HEDLEY_COMPCERT_VERSION
+#undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#undef JSON_HEDLEY_CONCAT
+#undef JSON_HEDLEY_CONCAT3
+#undef JSON_HEDLEY_CONCAT3_EX
+#undef JSON_HEDLEY_CONCAT_EX
+#undef JSON_HEDLEY_CONST
+#undef JSON_HEDLEY_CONSTEXPR
+#undef JSON_HEDLEY_CONST_CAST
+#undef JSON_HEDLEY_CPP_CAST
+#undef JSON_HEDLEY_CRAY_VERSION
+#undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#undef JSON_HEDLEY_C_DECL
+#undef JSON_HEDLEY_DEPRECATED
+#undef JSON_HEDLEY_DEPRECATED_FOR
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#undef JSON_HEDLEY_DIAGNOSTIC_POP
+#undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#undef JSON_HEDLEY_DMC_VERSION
+#undef JSON_HEDLEY_DMC_VERSION_CHECK
+#undef JSON_HEDLEY_EMPTY_BASES
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#undef JSON_HEDLEY_END_C_DECLS
+#undef JSON_HEDLEY_FLAGS
+#undef JSON_HEDLEY_FLAGS_CAST
+#undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#undef JSON_HEDLEY_GCC_HAS_FEATURE
+#undef JSON_HEDLEY_GCC_HAS_WARNING
+#undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#undef JSON_HEDLEY_GCC_VERSION
+#undef JSON_HEDLEY_GCC_VERSION_CHECK
+#undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#undef JSON_HEDLEY_GNUC_HAS_WARNING
+#undef JSON_HEDLEY_GNUC_VERSION
+#undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#undef JSON_HEDLEY_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_BUILTIN
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_EXTENSION
+#undef JSON_HEDLEY_HAS_FEATURE
+#undef JSON_HEDLEY_HAS_WARNING
+#undef JSON_HEDLEY_IAR_VERSION
+#undef JSON_HEDLEY_IAR_VERSION_CHECK
+#undef JSON_HEDLEY_IBM_VERSION
+#undef JSON_HEDLEY_IBM_VERSION_CHECK
+#undef JSON_HEDLEY_IMPORT
+#undef JSON_HEDLEY_INLINE
+#undef JSON_HEDLEY_INTEL_CL_VERSION
+#undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
+#undef JSON_HEDLEY_INTEL_VERSION
+#undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#undef JSON_HEDLEY_IS_CONSTANT
+#undef JSON_HEDLEY_IS_CONSTEXPR_
+#undef JSON_HEDLEY_LIKELY
+#undef JSON_HEDLEY_MALLOC
+#undef JSON_HEDLEY_MCST_LCC_VERSION
+#undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
+#undef JSON_HEDLEY_MESSAGE
+#undef JSON_HEDLEY_MSVC_VERSION
+#undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#undef JSON_HEDLEY_NEVER_INLINE
+#undef JSON_HEDLEY_NON_NULL
+#undef JSON_HEDLEY_NO_ESCAPE
+#undef JSON_HEDLEY_NO_RETURN
+#undef JSON_HEDLEY_NO_THROW
+#undef JSON_HEDLEY_NULL
+#undef JSON_HEDLEY_PELLES_VERSION
+#undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#undef JSON_HEDLEY_PGI_VERSION
+#undef JSON_HEDLEY_PGI_VERSION_CHECK
+#undef JSON_HEDLEY_PREDICT
+#undef JSON_HEDLEY_PRINTF_FORMAT
+#undef JSON_HEDLEY_PRIVATE
+#undef JSON_HEDLEY_PUBLIC
+#undef JSON_HEDLEY_PURE
+#undef JSON_HEDLEY_REINTERPRET_CAST
+#undef JSON_HEDLEY_REQUIRE
+#undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#undef JSON_HEDLEY_REQUIRE_MSG
+#undef JSON_HEDLEY_RESTRICT
+#undef JSON_HEDLEY_RETURNS_NON_NULL
+#undef JSON_HEDLEY_SENTINEL
+#undef JSON_HEDLEY_STATIC_ASSERT
+#undef JSON_HEDLEY_STATIC_CAST
+#undef JSON_HEDLEY_STRINGIFY
+#undef JSON_HEDLEY_STRINGIFY_EX
+#undef JSON_HEDLEY_SUNPRO_VERSION
+#undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#undef JSON_HEDLEY_TINYC_VERSION
+#undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#undef JSON_HEDLEY_TI_ARMCL_VERSION
+#undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL2000_VERSION
+#undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL430_VERSION
+#undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL6X_VERSION
+#undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL7X_VERSION
+#undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CLPRU_VERSION
+#undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#undef JSON_HEDLEY_TI_VERSION
+#undef JSON_HEDLEY_TI_VERSION_CHECK
+#undef JSON_HEDLEY_UNAVAILABLE
+#undef JSON_HEDLEY_UNLIKELY
+#undef JSON_HEDLEY_UNPREDICTABLE
+#undef JSON_HEDLEY_UNREACHABLE
+#undef JSON_HEDLEY_UNREACHABLE_RETURN
+#undef JSON_HEDLEY_VERSION
+#undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#undef JSON_HEDLEY_VERSION_ENCODE
+#undef JSON_HEDLEY_WARNING
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#undef JSON_HEDLEY_FALL_THROUGH
+
+
+
+#endif  // INCLUDE_NLOHMANN_JSON_HPP_
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/single_include/nlohmann/json_fwd.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/single_include/nlohmann/json_fwd.hpp
new file mode 100644
index 00000000..1df3928d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/single_include/nlohmann/json_fwd.hpp
@@ -0,0 +1,187 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
+#define INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+#include <cstdint> // int64_t, uint64_t
+#include <map> // map
+#include <memory> // allocator
+#include <string> // string
+#include <vector> // vector
+
+// #include <nlohmann/detail/abi_macros.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// This file contains all macro definitions affecting or depending on the ABI
+
+#ifndef JSON_SKIP_LIBRARY_VERSION_CHECK
+    #if defined(NLOHMANN_JSON_VERSION_MAJOR) && defined(NLOHMANN_JSON_VERSION_MINOR) && defined(NLOHMANN_JSON_VERSION_PATCH)
+        #if NLOHMANN_JSON_VERSION_MAJOR != 3 || NLOHMANN_JSON_VERSION_MINOR != 11 || NLOHMANN_JSON_VERSION_PATCH != 3
+            #warning "Already included a different version of the library!"
+        #endif
+    #endif
+#endif
+
+#define NLOHMANN_JSON_VERSION_MAJOR 3   // NOLINT(modernize-macro-to-enum)
+#define NLOHMANN_JSON_VERSION_MINOR 11  // NOLINT(modernize-macro-to-enum)
+#define NLOHMANN_JSON_VERSION_PATCH 3   // NOLINT(modernize-macro-to-enum)
+
+#ifndef JSON_DIAGNOSTICS
+    #define JSON_DIAGNOSTICS 0
+#endif
+
+#ifndef JSON_DIAGNOSTIC_POSITIONS
+    #define JSON_DIAGNOSTIC_POSITIONS 0
+#endif
+
+#ifndef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON 0
+#endif
+
+#if JSON_DIAGNOSTICS
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS _diag
+#else
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS
+#endif
+
+#if JSON_DIAGNOSTIC_POSITIONS
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS _dp
+#else
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS
+#endif
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON _ldvcmp
+#else
+    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_NO_VERSION
+    #define NLOHMANN_JSON_NAMESPACE_NO_VERSION 0
+#endif
+
+// Construct the namespace ABI tags component
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b, c) json_abi ## a ## b ## c
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b, c) \
+    NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b, c)
+
+#define NLOHMANN_JSON_ABI_TAGS                                       \
+    NLOHMANN_JSON_ABI_TAGS_CONCAT(                                   \
+            NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS,                       \
+            NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON, \
+            NLOHMANN_JSON_ABI_TAG_DIAGNOSTIC_POSITIONS)
+
+// Construct the namespace version component
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) \
+    _v ## major ## _ ## minor ## _ ## patch
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) \
+    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
+
+#if NLOHMANN_JSON_NAMESPACE_NO_VERSION
+#define NLOHMANN_JSON_NAMESPACE_VERSION
+#else
+#define NLOHMANN_JSON_NAMESPACE_VERSION                                 \
+    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, \
+                                           NLOHMANN_JSON_VERSION_MINOR, \
+                                           NLOHMANN_JSON_VERSION_PATCH)
+#endif
+
+// Combine namespace components
+#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a ## b
+#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) \
+    NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
+
+#ifndef NLOHMANN_JSON_NAMESPACE
+#define NLOHMANN_JSON_NAMESPACE               \
+    nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT( \
+            NLOHMANN_JSON_ABI_TAGS,           \
+            NLOHMANN_JSON_NAMESPACE_VERSION)
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_BEGIN
+#define NLOHMANN_JSON_NAMESPACE_BEGIN                \
+    namespace nlohmann                               \
+    {                                                \
+    inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT( \
+                NLOHMANN_JSON_ABI_TAGS,              \
+                NLOHMANN_JSON_NAMESPACE_VERSION)     \
+    {
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_END
+#define NLOHMANN_JSON_NAMESPACE_END                                     \
+    }  /* namespace (inline namespace) NOLINT(readability/namespace) */ \
+    }  // namespace nlohmann
+#endif
+
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/*!
+@brief default JSONSerializer template argument
+
+This serializer ignores the template arguments and uses ADL
+([argument-dependent lookup](https://en.cppreference.com/w/cpp/language/adl))
+for serialization.
+*/
+template<typename T = void, typename SFINAE = void>
+struct adl_serializer;
+
+/// a class to store JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/
+template<template<typename U, typename V, typename... Args> class ObjectType =
+         std::map,
+         template<typename U, typename... Args> class ArrayType = std::vector,
+         class StringType = std::string, class BooleanType = bool,
+         class NumberIntegerType = std::int64_t,
+         class NumberUnsignedType = std::uint64_t,
+         class NumberFloatType = double,
+         template<typename U> class AllocatorType = std::allocator,
+         template<typename T, typename SFINAE = void> class JSONSerializer =
+         adl_serializer,
+         class BinaryType = std::vector<std::uint8_t>, // cppcheck-suppress syntaxError
+         class CustomBaseClass = void>
+class basic_json;
+
+/// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+/// @sa https://json.nlohmann.me/api/json_pointer/
+template<typename RefStringType>
+class json_pointer;
+
+/*!
+@brief default specialization
+@sa https://json.nlohmann.me/api/json/
+*/
+using json = basic_json<>;
+
+/// @brief a minimal map-like container that preserves insertion order
+/// @sa https://json.nlohmann.me/api/ordered_map/
+template<class Key, class T, class IgnoredLess, class Allocator>
+struct ordered_map;
+
+/// @brief specialization that maintains the insertion order of object keys
+/// @sa https://json.nlohmann.me/api/ordered_json/
+using ordered_json = basic_json<nlohmann::ordered_map>;
+
+NLOHMANN_JSON_NAMESPACE_END
+
+#endif  // INCLUDE_NLOHMANN_JSON_FWD_HPP_
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/CMakeLists.txt
new file mode 100644
index 00000000..a153a692
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/CMakeLists.txt
@@ -0,0 +1,184 @@
+cmake_minimum_required(VERSION 3.13...3.14)
+
+option(JSON_Valgrind    "Execute test suite with Valgrind." OFF)
+option(JSON_FastTests   "Skip expensive/slow tests." OFF)
+
+set(JSON_32bitTest     AUTO CACHE STRING "Enable the 32bit unit test (ON/OFF/AUTO/ONLY).")
+set(JSON_TestStandards "" CACHE STRING "The list of standards to test explicitly.")
+
+# using an env var, since this will also affect targets executing cmake (such as "ci_test_compiler_default")
+set(JSON_FORCED_GLOBAL_COMPILE_OPTIONS $ENV{JSON_FORCED_GLOBAL_COMPILE_OPTIONS})
+if (NOT "" STREQUAL "$ENV{JSON_FORCED_GLOBAL_COMPILE_OPTIONS}")
+    add_compile_options($ENV{JSON_FORCED_GLOBAL_COMPILE_OPTIONS})
+endif()
+if (NOT "" STREQUAL "$ENV{JSON_FORCED_GLOBAL_LINK_OPTIONS}")
+    add_link_options($ENV{JSON_FORCED_GLOBAL_LINK_OPTIONS})
+endif()
+
+include(test)
+
+#############################################################################
+# override standard support
+#############################################################################
+
+# Clang only supports C++17 starting from Clang 5.0
+if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
+    unset(compiler_supports_cpp_17)
+endif()
+# MSVC 2015 (14.0) does not support C++17
+if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.1)
+    unset(compiler_supports_cpp_17)
+endif()
+
+# Clang C++20 support appears insufficient prior to Clang 9.0 (based on CI build failure)
+if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
+    unset(compiler_supports_cpp_20)
+endif()
+# GCC started supporting C++20 features in 8.0 but a test for #3070 segfaults prior to 9.0
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
+    unset(compiler_supports_cpp_20)
+endif()
+
+#############################################################################
+# test_main library with shared code to speed up build and common settings
+#############################################################################
+
+add_library(test_main OBJECT src/unit.cpp)
+target_compile_definitions(test_main PUBLIC
+    DOCTEST_CONFIG_SUPER_FAST_ASSERTS
+    JSON_TEST_KEEP_MACROS
+    JSON_TEST_USING_MULTIPLE_HEADERS=$<BOOL:${JSON_MultipleHeaders}>)
+target_compile_features(test_main PRIVATE cxx_std_11)
+target_compile_options(test_main PUBLIC
+    $<$<CXX_COMPILER_ID:MSVC>:/EHsc;$<$<CONFIG:Release>:/Od>>
+    # MSVC: Force to always compile with W4
+    #       Disable warning C4566: character represented by universal-character-name '\uFF01'
+    #                              cannot be represented in the current code page (1252)
+    #       Disable warning C4996: 'nlohmann::basic_json<...>::operator <<': was declared deprecated
+    $<$<CXX_COMPILER_ID:MSVC>:/W4 /wd4566 /wd4996>
+    # https://github.com/nlohmann/json/issues/1114
+    $<$<CXX_COMPILER_ID:MSVC>:/bigobj> $<$<BOOL:${MINGW}>:-Wa,-mbig-obj>
+
+    # https://github.com/nlohmann/json/pull/3229
+    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=2196>
+
+    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated;-Wno-float-equal>
+    $<$<CXX_COMPILER_ID:GNU>:-Wno-deprecated-declarations>
+    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=1786>)
+target_include_directories(test_main PUBLIC
+    thirdparty/doctest
+    thirdparty/fifo_map
+    ${PROJECT_BINARY_DIR}/include)
+target_link_libraries(test_main PUBLIC ${NLOHMANN_JSON_TARGET_NAME})
+
+#############################################################################
+# define test- and standard-specific build settings
+#############################################################################
+
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU"
+    AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 8.0
+    AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0 AND NOT MINGW)
+    # fix for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90050
+    json_test_set_test_options(all CXX_STANDARDS 17 LINK_LIBRARIES stdc++fs)
+endif()
+
+if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+    # avoid stack overflow, see https://github.com/nlohmann/json/issues/2955
+    json_test_set_test_options("test-cbor;test-msgpack;test-ubjson;test-bjdata;test-binary_formats" LINK_OPTIONS /STACK:4000000)
+endif()
+
+# disable exceptions for test-disabled_exceptions
+json_test_set_test_options(test-disabled_exceptions
+    COMPILE_DEFINITIONS
+        JSON_NOEXCEPTION
+        # disabled due to https://github.com/nlohmann/json/discussions/2824
+        #$<$<CXX_COMPILER_ID:MSVC>:_HAS_EXCEPTIONS=0>
+    COMPILE_OPTIONS
+        $<$<CXX_COMPILER_ID:AppleClang>:-fno-exceptions> $<$<CXX_COMPILER_ID:Clang>:-fno-exceptions>
+        $<$<CXX_COMPILER_ID:GNU>:-fno-exceptions>
+        $<$<CXX_COMPILER_ID:Intel>:-fno-exceptions> $<$<CXX_COMPILER_ID:IntelLLVM>:-fno-exceptions>
+        # disabled due to https://github.com/nlohmann/json/discussions/2824
+        #$<$<CXX_COMPILER_ID:MSVC>:/EH>
+)
+
+# raise timeout of expensive Unicode test
+json_test_set_test_options(test-unicode4 TEST_PROPERTIES TIMEOUT 3000)
+
+#############################################################################
+# add unit tests
+#############################################################################
+
+if("${JSON_TestStandards}" STREQUAL "")
+    set(test_cxx_standards 11 14 17 20 23)
+    unset(test_force)
+else()
+    set(test_cxx_standards ${JSON_TestStandards})
+    set(test_force FORCE)
+endif()
+
+# Print selected standards marking unavailable ones with brackets
+set(msg_standards "")
+foreach(cxx_standard ${test_cxx_standards})
+    if(compiler_supports_cpp_${cxx_standard})
+        list(APPEND msg_standards ${cxx_standard})
+    else()
+        list(APPEND msg_standards [${cxx_standard}])
+    endif()
+endforeach()
+string(JOIN " " msg_standards ${msg_standards})
+set(msg "Testing standards: ${msg_standards}")
+if(test_force)
+    string(APPEND msg " (forced)")
+endif()
+message(STATUS "${msg}")
+
+# *DO* use json_test_set_test_options() above this line
+
+json_test_should_build_32bit_test(json_32bit_test json_32bit_test_only "${JSON_32bitTest}")
+file(GLOB files src/unit-*.cpp)
+if(json_32bit_test_only)
+    set(files src/unit-32bit.cpp)    
+elseif(NOT json_32bit_test)
+    list(FILTER files EXCLUDE REGEX src/unit-32bit.cpp)
+endif()
+
+foreach(file ${files})
+    json_test_add_test_for(${file} MAIN test_main CXX_STANDARDS ${test_cxx_standards} ${test_force})
+endforeach()
+
+if(json_32bit_test_only)
+    # Skip all other tests in this file
+    return()
+endif()
+
+# test legacy comparison of discarded values
+json_test_set_test_options(test-comparison_legacy
+    COMPILE_DEFINITIONS JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON=1
+)
+json_test_add_test_for(src/unit-comparison.cpp
+    NAME test-comparison_legacy
+    MAIN test_main CXX_STANDARDS ${test_cxx_standards} ${test_force}
+)
+
+# *DO NOT* use json_test_set_test_options() below this line
+
+#############################################################################
+# test ABI compatibility
+#############################################################################
+
+add_subdirectory(abi)
+
+#############################################################################
+# Test the generated build configs
+#############################################################################
+
+# these tests depend on the generated file nlohmann_jsonConfig.cmake
+if (JSON_Install)
+    add_subdirectory(cmake_import)
+    add_subdirectory(cmake_import_minver)
+endif()
+
+add_subdirectory(cmake_add_subdirectory)
+add_subdirectory(cmake_fetch_content)
+add_subdirectory(cmake_fetch_content2)
+add_subdirectory(cmake_target_include_directories)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/Makefile b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/Makefile
new file mode 100644
index 00000000..3a11ce7d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/Makefile
@@ -0,0 +1,32 @@
+##############################################################################
+# OSS-Fuzz
+##############################################################################
+
+# The following targets realize the integration to OSS-Fuzz.
+# See <https://github.com/google/oss-fuzz/blob/master/projects/json/build.sh> for more information.
+
+# additional flags
+CXXFLAGS += -std=c++11
+CPPFLAGS += -I ../single_include
+
+FUZZER_ENGINE = src/fuzzer-driver_afl.cpp
+FUZZERS = parse_afl_fuzzer parse_bson_fuzzer parse_cbor_fuzzer parse_msgpack_fuzzer parse_ubjson_fuzzer parse_bjdata_fuzzer
+fuzzers: $(FUZZERS)
+
+parse_afl_fuzzer:
+	$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(FUZZER_ENGINE) src/fuzzer-parse_json.cpp -o $@
+
+parse_bson_fuzzer:
+	$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(FUZZER_ENGINE) src/fuzzer-parse_bson.cpp -o $@
+
+parse_cbor_fuzzer:
+	$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(FUZZER_ENGINE) src/fuzzer-parse_cbor.cpp -o $@
+
+parse_msgpack_fuzzer:
+	$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(FUZZER_ENGINE) src/fuzzer-parse_msgpack.cpp -o $@
+
+parse_ubjson_fuzzer:
+	$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(FUZZER_ENGINE) src/fuzzer-parse_ubjson.cpp -o $@
+
+parse_bjdata_fuzzer:
+	$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(FUZZER_ENGINE) src/fuzzer-parse_bjdata.cpp -o $@
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/CMakeLists.txt
new file mode 100644
index 00000000..ba90837c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/CMakeLists.txt
@@ -0,0 +1,30 @@
+# common build settings
+add_library(abi_compat_common INTERFACE)
+target_compile_definitions(abi_compat_common INTERFACE
+    DOCTEST_CONFIG_SUPER_FAST_ASSERTS
+    JSON_TEST_KEEP_MACROS)
+target_compile_features(abi_compat_common INTERFACE cxx_std_11)
+target_compile_options(abi_compat_common INTERFACE
+    $<$<CXX_COMPILER_ID:MSVC>:/EHsc;$<$<CONFIG:Release>:/Od>>
+    # MSVC: Force to always compile with W4
+    $<$<CXX_COMPILER_ID:MSVC>:/W4>
+
+    # https://github.com/nlohmann/json/pull/3229
+    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=2196>
+
+    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated;-Wno-float-equal>
+    $<$<CXX_COMPILER_ID:GNU>:-Wno-deprecated-declarations>
+    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=1786>)
+target_include_directories(abi_compat_common SYSTEM INTERFACE
+    ../thirdparty/doctest
+    include)
+target_link_libraries(abi_compat_common INTERFACE ${NLOHMANN_JSON_TARGET_NAME})
+
+# shared main()
+add_library(abi_compat_main STATIC main.cpp)
+target_link_libraries(abi_compat_main PUBLIC abi_compat_common)
+
+# add individual tests
+add_subdirectory(config)
+add_subdirectory(diag)
+add_subdirectory(inline_ns)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/CMakeLists.txt
new file mode 100644
index 00000000..3a836769
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/CMakeLists.txt
@@ -0,0 +1,22 @@
+# test the different options to change the namespace
+
+# test default namespace
+add_executable(abi_config_default default.cpp)
+target_link_libraries(abi_config_default PRIVATE abi_compat_main)
+add_test(
+    NAME test-abi_config_default
+    COMMAND abi_config_default ${DOCTEST_TEST_FILTER})
+
+# test no version namespace
+add_executable(abi_config_noversion noversion.cpp)
+target_link_libraries(abi_config_noversion PRIVATE abi_compat_main)
+add_test(
+    NAME test-abi_config_noversion
+    COMMAND abi_config_noversion ${DOCTEST_TEST_FILTER})
+
+# test custom namespace
+add_executable(abi_config_custom custom.cpp)
+target_link_libraries(abi_config_custom PRIVATE abi_compat_main)
+add_test(
+    NAME test-abi_config_custom
+    COMMAND abi_config_custom ${DOCTEST_TEST_FILTER})
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/config.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/config.hpp
new file mode 100644
index 00000000..1e0f41e8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/config.hpp
@@ -0,0 +1,35 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include "doctest.h"
+
+#include <iostream>
+#include <regex>
+#include <string>
+
+#define STRINGIZE_EX(x) #x
+#define STRINGIZE(x) STRINGIZE_EX(x)
+
+template<typename T>
+std::string namespace_name(std::string ns, T* /*unused*/ = nullptr) // NOLINT(performance-unnecessary-value-param)
+{
+#if DOCTEST_MSVC && !DOCTEST_CLANG
+    ns = __FUNCSIG__;
+#elif !DOCTEST_CLANG
+    ns = __PRETTY_FUNCTION__;
+#endif
+    std::smatch m;
+
+    // extract the true namespace name from the function signature
+    CAPTURE(ns);
+    CHECK(std::regex_search(ns, m, std::regex("nlohmann(::[a-zA-Z0-9_]+)*::basic_json")));
+
+    return m.str();
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/custom.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/custom.cpp
new file mode 100644
index 00000000..64644c56
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/custom.cpp
@@ -0,0 +1,33 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include "config.hpp"
+
+// define custom namespace
+#define NLOHMANN_JSON_NAMESPACE nlohmann // this line may be omitted
+#define NLOHMANN_JSON_NAMESPACE_BEGIN namespace nlohmann {
+#define NLOHMANN_JSON_NAMESPACE_END }
+#include <nlohmann/json_fwd.hpp>
+
+TEST_CASE("custom namespace")
+{
+    // GCC 4.8 fails with regex_error
+#if !DOCTEST_GCC || DOCTEST_GCC >= DOCTEST_COMPILER(4, 9, 0)
+    SECTION("namespace matches expectation")
+    {
+        std::string expected = "nlohmann::basic_json";
+
+        // fallback for Clang
+        const std::string ns{STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json"};
+
+        CHECK(namespace_name<nlohmann::json>(ns) == expected);
+    }
+#endif
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/default.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/default.cpp
new file mode 100644
index 00000000..a87244e2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/default.cpp
@@ -0,0 +1,41 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include "config.hpp"
+
+#include <nlohmann/json_fwd.hpp>
+
+TEST_CASE("default namespace")
+{
+    // GCC 4.8 fails with regex_error
+#if !DOCTEST_GCC || DOCTEST_GCC >= DOCTEST_COMPILER(4, 9, 0)
+    SECTION("namespace matches expectation")
+    {
+        std::string expected = "nlohmann::json_abi";
+
+#if JSON_DIAGNOSTICS
+        expected += "_diag";
+#endif
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+        expected += "_ldvcmp";
+#endif
+
+        expected += "_v" STRINGIZE(NLOHMANN_JSON_VERSION_MAJOR);
+        expected += "_" STRINGIZE(NLOHMANN_JSON_VERSION_MINOR);
+        expected += "_" STRINGIZE(NLOHMANN_JSON_VERSION_PATCH) "::basic_json";
+
+        // fallback for Clang
+        const std::string ns{STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json"};
+
+        CHECK(namespace_name<nlohmann::json>(ns) == expected);
+    }
+#endif
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/noversion.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/noversion.cpp
new file mode 100644
index 00000000..0bfe71ba
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/config/noversion.cpp
@@ -0,0 +1,40 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include "config.hpp"
+
+#define NLOHMANN_JSON_NAMESPACE_NO_VERSION 1
+#include <nlohmann/json_fwd.hpp>
+
+TEST_CASE("default namespace without version component")
+{
+    // GCC 4.8 fails with regex_error
+#if !DOCTEST_GCC || DOCTEST_GCC >= DOCTEST_COMPILER(4, 9, 0)
+    SECTION("namespace matches expectation")
+    {
+        std::string expected = "nlohmann::json_abi";
+
+#if JSON_DIAGNOSTICS
+        expected += "_diag";
+#endif
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+        expected += "_ldvcmp";
+#endif
+
+        expected += "::basic_json";
+
+        // fallback for Clang
+        const std::string ns{STRINGIZE(NLOHMANN_JSON_NAMESPACE) "::basic_json"};
+
+        CHECK(namespace_name<nlohmann::json>(ns) == expected);
+    }
+#endif
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/CMakeLists.txt
new file mode 100644
index 00000000..3935ff1d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/CMakeLists.txt
@@ -0,0 +1,19 @@
+# test linking library built with different JSON_DIAGNOSTICS setting
+# into the same executable
+
+# compile code using JSON_DIAGNOSTICS=1
+add_library(abi_compat_diag_on STATIC diag_on.cpp)
+target_link_libraries(abi_compat_diag_on PUBLIC abi_compat_common)
+
+# compile code using JSON_DIAGNOSTICS=0
+add_library(abi_compat_diag_off STATIC diag_off.cpp)
+target_link_libraries(abi_compat_diag_off PUBLIC abi_compat_common)
+
+# build test executable and add test
+add_executable(abi_compat_diag diag.cpp)
+target_link_libraries(abi_compat_diag PRIVATE
+    abi_compat_main abi_compat_diag_on abi_compat_diag_off)
+
+add_test(
+    NAME test-abi_compat_diag
+    COMMAND abi_compat_diag ${DOCTEST_TEST_FILTER})
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag.cpp
new file mode 100644
index 00000000..7cc95bfd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag.cpp
@@ -0,0 +1,29 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include "diag.hpp"
+
+TEST_CASE("ABI compatible diagnostics")
+{
+    SECTION("basic_json size")
+    {
+        // basic_json with diagnostics is larger because of added data members
+        CHECK(json_sizeof_diag_on() == json_sizeof_diag_on_explicit());
+        CHECK(json_sizeof_diag_off() == json_sizeof_diag_off_explicit());
+        CHECK(json_sizeof_diag_on() > json_sizeof_diag_off());
+    }
+
+    SECTION("basic_json at")
+    {
+        // accessing a nonexistent key throws different exception with diagnostics
+        CHECK_THROWS_WITH(json_at_diag_on(), "[json.exception.out_of_range.403] (/foo) key 'bar' not found");
+        CHECK_THROWS_WITH(json_at_diag_off(), "[json.exception.out_of_range.403] key 'bar' not found");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag.hpp
new file mode 100644
index 00000000..030df752
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag.hpp
@@ -0,0 +1,20 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstddef>
+
+std::size_t json_sizeof_diag_on();
+std::size_t json_sizeof_diag_on_explicit();
+
+std::size_t json_sizeof_diag_off();
+std::size_t json_sizeof_diag_off_explicit();
+
+void json_at_diag_on();
+void json_at_diag_off();
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag_off.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag_off.cpp
new file mode 100644
index 00000000..63d8ab96
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag_off.cpp
@@ -0,0 +1,30 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#undef JSON_DIAGNOSTICS
+#define JSON_DIAGNOSTICS 0
+#include <nlohmann/json.hpp>
+
+#include "diag.hpp"
+
+std::size_t json_sizeof_diag_off()
+{
+    return sizeof(nlohmann::json);
+}
+
+std::size_t json_sizeof_diag_off_explicit()
+{
+    return sizeof(::NLOHMANN_JSON_NAMESPACE::json);
+}
+
+void json_at_diag_off()
+{
+    using nlohmann::json;
+    json j = json{{"foo", json::object()}};
+    j.at(json::json_pointer("/foo/bar"));
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag_on.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag_on.cpp
new file mode 100644
index 00000000..7bdca137
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/diag/diag_on.cpp
@@ -0,0 +1,30 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#undef JSON_DIAGNOSTICS
+#define JSON_DIAGNOSTICS 1
+#include <nlohmann/json.hpp>
+
+#include "diag.hpp"
+
+std::size_t json_sizeof_diag_on()
+{
+    return sizeof(nlohmann::json);
+}
+
+std::size_t json_sizeof_diag_on_explicit()
+{
+    return sizeof(::NLOHMANN_JSON_NAMESPACE::json);
+}
+
+void json_at_diag_on()
+{
+    using nlohmann::json;
+    json j = json{{"foo", json::object()}};
+    j.at(json::json_pointer("/foo/bar"));
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/include/nlohmann/json_v3_10_5.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/include/nlohmann/json_v3_10_5.hpp
new file mode 100644
index 00000000..1f8cdcb5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/include/nlohmann/json_v3_10_5.hpp
@@ -0,0 +1,22091 @@
+/*
+    __ _____ _____ _____
+ __|  |   __|     |   | |  JSON for Modern C++
+|  |  |__   |  |  | | | |  version 3.10.5
+|_____|_____|_____|_|___|  https://github.com/nlohmann/json
+
+Licensed under the MIT License <http://opensource.org/licenses/MIT>.
+SPDX-License-Identifier: MIT
+Copyright (c) 2013-2022 Niels Lohmann <http://nlohmann.me>.
+
+Permission is hereby  granted, free of charge, to any  person obtaining a copy
+of this software and associated  documentation files (the "Software"), to deal
+in the Software  without restriction, including without  limitation the rights
+to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
+copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
+IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
+FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
+AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
+LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+/****************************************************************************\
+ * Note on documentation: The source files contain links to the online      *
+ * documentation of the public API at https://json.nlohmann.me. This URL    *
+ * contains the most recent documentation and should also be applicable to  *
+ * previous versions; documentation for deprecated functions is not         *
+ * removed, but marked deprecated. See "Generate documentation" section in  *
+ * file doc/README.md.                                                      *
+\****************************************************************************/
+
+#ifndef INCLUDE_NLOHMANN_JSON_V3_10_5_HPP_
+#define INCLUDE_NLOHMANN_JSON_V3_10_5_HPP_
+
+#define NLOHMANN_JSON_VERSION_MAJOR 3
+#define NLOHMANN_JSON_VERSION_MINOR 10
+#define NLOHMANN_JSON_VERSION_PATCH 5
+
+#include <algorithm> // all_of, find, for_each
+#include <cstddef> // nullptr_t, ptrdiff_t, size_t
+#include <functional> // hash, less
+#include <initializer_list> // initializer_list
+#ifndef JSON_NO_IO
+    #include <iosfwd> // istream, ostream
+#endif  // JSON_NO_IO
+#include <iterator> // random_access_iterator_tag
+#include <memory> // unique_ptr
+#include <numeric> // accumulate
+#include <string> // string, stoi, to_string
+#include <utility> // declval, forward, move, pair, swap
+#include <vector> // vector
+
+// #include <nlohmann/adl_serializer.hpp>
+
+
+#include <type_traits>
+#include <utility>
+
+// #include <nlohmann/detail/conversions/from_json.hpp>
+
+
+#include <algorithm> // transform
+#include <array> // array
+#include <forward_list> // forward_list
+#include <iterator> // inserter, front_inserter, end
+#include <map> // map
+#include <string> // string
+#include <tuple> // tuple, make_tuple
+#include <type_traits> // is_arithmetic, is_same, is_enum, underlying_type, is_convertible
+#include <unordered_map> // unordered_map
+#include <utility> // pair, declval
+#include <valarray> // valarray
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+
+#include <exception> // exception
+#include <stdexcept> // runtime_error
+#include <string> // to_string
+#include <vector> // vector
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t
+#include <string> // string
+
+namespace nlohmann
+{
+namespace detail
+{
+///////////////////////////
+// JSON type enumeration //
+///////////////////////////
+
+/*!
+@brief the JSON type enumeration
+
+This enumeration collects the different JSON types. It is internally used to
+distinguish the stored values, and the functions @ref basic_json::is_null(),
+@ref basic_json::is_object(), @ref basic_json::is_array(),
+@ref basic_json::is_string(), @ref basic_json::is_boolean(),
+@ref basic_json::is_number() (with @ref basic_json::is_number_integer(),
+@ref basic_json::is_number_unsigned(), and @ref basic_json::is_number_float()),
+@ref basic_json::is_discarded(), @ref basic_json::is_primitive(), and
+@ref basic_json::is_structured() rely on it.
+
+@note There are three enumeration entries (number_integer, number_unsigned, and
+number_float), because the library distinguishes these three types for numbers:
+@ref basic_json::number_unsigned_t is used for unsigned integers,
+@ref basic_json::number_integer_t is used for signed integers, and
+@ref basic_json::number_float_t is used for floating-point numbers or to
+approximate integers which do not fit in the limits of their respective type.
+
+@sa see @ref basic_json::basic_json(const value_t value_type) -- create a JSON
+value with the default value for a given type
+
+@since version 1.0.0
+*/
+enum class value_t : std::uint8_t
+{
+    null,             ///< null value
+    object,           ///< object (unordered set of name/value pairs)
+    array,            ///< array (ordered collection of values)
+    string,           ///< string value
+    boolean,          ///< boolean value
+    number_integer,   ///< number value (signed integer)
+    number_unsigned,  ///< number value (unsigned integer)
+    number_float,     ///< number value (floating-point)
+    binary,           ///< binary array (ordered collection of bytes)
+    discarded         ///< discarded by the parser callback function
+};
+
+/*!
+@brief comparison operator for JSON types
+
+Returns an ordering that is similar to Python:
+- order: null < boolean < number < object < array < string < binary
+- furthermore, each type is not smaller than itself
+- discarded values are not comparable
+- binary is represented as a b"" string in python and directly comparable to a
+  string; however, making a binary array directly comparable with a string would
+  be surprising behavior in a JSON file.
+
+@since version 1.0.0
+*/
+inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+{
+    static constexpr std::array<std::uint8_t, 9> order = {{
+            0 /* null */, 3 /* object */, 4 /* array */, 5 /* string */,
+            1 /* boolean */, 2 /* integer */, 2 /* unsigned */, 2 /* float */,
+            6 /* binary */
+        }
+    };
+
+    const auto l_index = static_cast<std::size_t>(lhs);
+    const auto r_index = static_cast<std::size_t>(rhs);
+    return l_index < order.size() && r_index < order.size() && order[l_index] < order[r_index];
+}
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/string_escape.hpp>
+
+
+#include <string>
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+#include <utility> // declval, pair
+// #include <nlohmann/thirdparty/hedley/hedley.hpp>
+
+
+/* Hedley - https://nemequ.github.io/hedley
+ * Created by Evan Nemerson <evan@nemerson.com>
+ *
+ * To the extent possible under law, the author(s) have dedicated all
+ * copyright and related and neighboring rights to this software to
+ * the public domain worldwide. This software is distributed without
+ * any warranty.
+ *
+ * For details, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+ * SPDX-License-Identifier: CC0-1.0
+ */
+
+#if !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < 15)
+#if defined(JSON_HEDLEY_VERSION)
+    #undef JSON_HEDLEY_VERSION
+#endif
+#define JSON_HEDLEY_VERSION 15
+
+#if defined(JSON_HEDLEY_STRINGIFY_EX)
+    #undef JSON_HEDLEY_STRINGIFY_EX
+#endif
+#define JSON_HEDLEY_STRINGIFY_EX(x) #x
+
+#if defined(JSON_HEDLEY_STRINGIFY)
+    #undef JSON_HEDLEY_STRINGIFY
+#endif
+#define JSON_HEDLEY_STRINGIFY(x) JSON_HEDLEY_STRINGIFY_EX(x)
+
+#if defined(JSON_HEDLEY_CONCAT_EX)
+    #undef JSON_HEDLEY_CONCAT_EX
+#endif
+#define JSON_HEDLEY_CONCAT_EX(a,b) a##b
+
+#if defined(JSON_HEDLEY_CONCAT)
+    #undef JSON_HEDLEY_CONCAT
+#endif
+#define JSON_HEDLEY_CONCAT(a,b) JSON_HEDLEY_CONCAT_EX(a,b)
+
+#if defined(JSON_HEDLEY_CONCAT3_EX)
+    #undef JSON_HEDLEY_CONCAT3_EX
+#endif
+#define JSON_HEDLEY_CONCAT3_EX(a,b,c) a##b##c
+
+#if defined(JSON_HEDLEY_CONCAT3)
+    #undef JSON_HEDLEY_CONCAT3
+#endif
+#define JSON_HEDLEY_CONCAT3(a,b,c) JSON_HEDLEY_CONCAT3_EX(a,b,c)
+
+#if defined(JSON_HEDLEY_VERSION_ENCODE)
+    #undef JSON_HEDLEY_VERSION_ENCODE
+#endif
+#define JSON_HEDLEY_VERSION_ENCODE(major,minor,revision) (((major) * 1000000) + ((minor) * 1000) + (revision))
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MAJOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MAJOR(version) ((version) / 1000000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MINOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MINOR(version) (((version) % 1000000) / 1000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_REVISION)
+    #undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_REVISION(version) ((version) % 1000)
+
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #undef JSON_HEDLEY_GNUC_VERSION
+#endif
+#if defined(__GNUC__) && defined(__GNUC_PATCHLEVEL__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
+#elif defined(__GNUC__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, 0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GNUC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION)
+    #undef JSON_HEDLEY_MSVC_VERSION
+#endif
+#if defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 140000000) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 10000000, (_MSC_FULL_VER % 10000000) / 100000, (_MSC_FULL_VER % 100000) / 100)
+#elif defined(_MSC_FULL_VER) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 1000000, (_MSC_FULL_VER % 1000000) / 10000, (_MSC_FULL_VER % 10000) / 10)
+#elif defined(_MSC_VER) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_VER / 100, _MSC_VER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#endif
+#if !defined(JSON_HEDLEY_MSVC_VERSION)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (0)
+#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 10000000) + (minor * 100000) + (patch)))
+#elif defined(_MSC_VER) && (_MSC_VER >= 1200)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 1000000) + (minor * 10000) + (patch)))
+#else
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_VER >= ((major * 100) + (minor)))
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #undef JSON_HEDLEY_INTEL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && !defined(__ICL)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, __INTEL_COMPILER_UPDATE)
+#elif defined(__INTEL_COMPILER) && !defined(__ICL)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
+    #undef JSON_HEDLEY_INTEL_CL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && defined(__ICL)
+    #define JSON_HEDLEY_INTEL_CL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER, __INTEL_COMPILER_UPDATE, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
+    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_CL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #undef JSON_HEDLEY_PGI_VERSION
+#endif
+#if defined(__PGI) && defined(__PGIC__) && defined(__PGIC_MINOR__) && defined(__PGIC_PATCHLEVEL__)
+    #define JSON_HEDLEY_PGI_VERSION JSON_HEDLEY_VERSION_ENCODE(__PGIC__, __PGIC_MINOR__, __PGIC_PATCHLEVEL__)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION_CHECK)
+    #undef JSON_HEDLEY_PGI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PGI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #undef JSON_HEDLEY_SUNPRO_VERSION
+#endif
+#if defined(__SUNPRO_C) && (__SUNPRO_C > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_C >> 16) & 0xf) * 10) + ((__SUNPRO_C >> 12) & 0xf), (((__SUNPRO_C >> 8) & 0xf) * 10) + ((__SUNPRO_C >> 4) & 0xf), (__SUNPRO_C & 0xf) * 10)
+#elif defined(__SUNPRO_C)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_C >> 8) & 0xf, (__SUNPRO_C >> 4) & 0xf, (__SUNPRO_C) & 0xf)
+#elif defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_CC >> 16) & 0xf) * 10) + ((__SUNPRO_CC >> 12) & 0xf), (((__SUNPRO_CC >> 8) & 0xf) * 10) + ((__SUNPRO_CC >> 4) & 0xf), (__SUNPRO_CC & 0xf) * 10)
+#elif defined(__SUNPRO_CC)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_CC >> 8) & 0xf, (__SUNPRO_CC >> 4) & 0xf, (__SUNPRO_CC) & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION_CHECK)
+    #undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_SUNPRO_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#endif
+#if defined(__EMSCRIPTEN__)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION JSON_HEDLEY_VERSION_ENCODE(__EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_EMSCRIPTEN_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #undef JSON_HEDLEY_ARM_VERSION
+#endif
+#if defined(__CC_ARM) && defined(__ARMCOMPILER_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCOMPILER_VERSION / 1000000, (__ARMCOMPILER_VERSION % 1000000) / 10000, (__ARMCOMPILER_VERSION % 10000) / 100)
+#elif defined(__CC_ARM) && defined(__ARMCC_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCC_VERSION / 1000000, (__ARMCC_VERSION % 1000000) / 10000, (__ARMCC_VERSION % 10000) / 100)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION_CHECK)
+    #undef JSON_HEDLEY_ARM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_ARM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #undef JSON_HEDLEY_IBM_VERSION
+#endif
+#if defined(__ibmxl__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ibmxl_version__, __ibmxl_release__, __ibmxl_modification__)
+#elif defined(__xlC__) && defined(__xlC_ver__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, (__xlC_ver__ >> 8) & 0xff)
+#elif defined(__xlC__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, 0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION_CHECK)
+    #undef JSON_HEDLEY_IBM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IBM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #undef JSON_HEDLEY_TI_VERSION
+#endif
+#if \
+    defined(__TI_COMPILER_VERSION__) && \
+    ( \
+      defined(__TMS470__) || defined(__TI_ARM__) || \
+      defined(__MSP430__) || \
+      defined(__TMS320C2000__) \
+    )
+#if (__TI_COMPILER_VERSION__ >= 16000000)
+    #define JSON_HEDLEY_TI_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C2000__)
+    #define JSON_HEDLEY_TI_CL2000_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL2000_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #undef JSON_HEDLEY_TI_CL430_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__MSP430__)
+    #define JSON_HEDLEY_TI_CL430_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL430_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && (defined(__TMS470__) || defined(__TI_ARM__))
+    #define JSON_HEDLEY_TI_ARMCL_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_ARMCL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C6X__)
+    #define JSON_HEDLEY_TI_CL6X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL6X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__C7000__)
+    #define JSON_HEDLEY_TI_CL7X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL7X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__PRU__)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CLPRU_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #undef JSON_HEDLEY_CRAY_VERSION
+#endif
+#if defined(_CRAYC)
+    #if defined(_RELEASE_PATCHLEVEL)
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, _RELEASE_PATCHLEVEL)
+    #else
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION_CHECK)
+    #undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_CRAY_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #undef JSON_HEDLEY_IAR_VERSION
+#endif
+#if defined(__IAR_SYSTEMS_ICC__)
+    #if __VER__ > 1000
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE((__VER__ / 1000000), ((__VER__ / 1000) % 1000), (__VER__ % 1000))
+    #else
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE(__VER__ / 100, __VER__ % 100, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION_CHECK)
+    #undef JSON_HEDLEY_IAR_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IAR_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #undef JSON_HEDLEY_TINYC_VERSION
+#endif
+#if defined(__TINYC__)
+    #define JSON_HEDLEY_TINYC_VERSION JSON_HEDLEY_VERSION_ENCODE(__TINYC__ / 1000, (__TINYC__ / 100) % 10, __TINYC__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION_CHECK)
+    #undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TINYC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #undef JSON_HEDLEY_DMC_VERSION
+#endif
+#if defined(__DMC__)
+    #define JSON_HEDLEY_DMC_VERSION JSON_HEDLEY_VERSION_ENCODE(__DMC__ >> 8, (__DMC__ >> 4) & 0xf, __DMC__ & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION_CHECK)
+    #undef JSON_HEDLEY_DMC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_DMC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #undef JSON_HEDLEY_COMPCERT_VERSION
+#endif
+#if defined(__COMPCERT_VERSION__)
+    #define JSON_HEDLEY_COMPCERT_VERSION JSON_HEDLEY_VERSION_ENCODE(__COMPCERT_VERSION__ / 10000, (__COMPCERT_VERSION__ / 100) % 100, __COMPCERT_VERSION__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION_CHECK)
+    #undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_COMPCERT_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #undef JSON_HEDLEY_PELLES_VERSION
+#endif
+#if defined(__POCC__)
+    #define JSON_HEDLEY_PELLES_VERSION JSON_HEDLEY_VERSION_ENCODE(__POCC__ / 100, __POCC__ % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION_CHECK)
+    #undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PELLES_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #undef JSON_HEDLEY_MCST_LCC_VERSION
+#endif
+#if defined(__LCC__) && defined(__LCC_MINOR__)
+    #define JSON_HEDLEY_MCST_LCC_VERSION JSON_HEDLEY_VERSION_ENCODE(__LCC__ / 100, __LCC__ % 100, __LCC_MINOR__)
+#endif
+
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_MCST_LCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #undef JSON_HEDLEY_GCC_VERSION
+#endif
+#if \
+    defined(JSON_HEDLEY_GNUC_VERSION) && \
+    !defined(__clang__) && \
+    !defined(JSON_HEDLEY_INTEL_VERSION) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_ARM_VERSION) && \
+    !defined(JSON_HEDLEY_CRAY_VERSION) && \
+    !defined(JSON_HEDLEY_TI_VERSION) && \
+    !defined(JSON_HEDLEY_TI_ARMCL_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL430_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL2000_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL6X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL7X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CLPRU_VERSION) && \
+    !defined(__COMPCERT__) && \
+    !defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION JSON_HEDLEY_GNUC_VERSION
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_ATTRIBUTE
+#endif
+#if \
+  defined(__has_attribute) && \
+  ( \
+    (!defined(JSON_HEDLEY_IAR_VERSION) || JSON_HEDLEY_IAR_VERSION_CHECK(8,5,9)) \
+  )
+#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) __has_attribute(attribute)
+#else
+#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#endif
+#if \
+    defined(__has_cpp_attribute) && \
+    defined(__cplusplus) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#endif
+#if !defined(__cplusplus) || !defined(__has_cpp_attribute)
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#elif \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_IAR_VERSION) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0)) && \
+    (!defined(JSON_HEDLEY_MSVC_VERSION) || JSON_HEDLEY_MSVC_VERSION_CHECK(19,20,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(ns::attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_BUILTIN)
+    #undef JSON_HEDLEY_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_FEATURE)
+    #undef JSON_HEDLEY_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_HAS_FEATURE(feature) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_HAS_FEATURE(feature) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GCC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_EXTENSION)
+    #undef JSON_HEDLEY_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_WARNING)
+    #undef JSON_HEDLEY_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_HAS_WARNING(warning) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_HAS_WARNING(warning) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_WARNING)
+    #undef JSON_HEDLEY_GNUC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_WARNING)
+    #undef JSON_HEDLEY_GCC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,17) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(8,0,0) || \
+    (JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) && defined(__C99_PRAGMA_OPERATOR))
+    #define JSON_HEDLEY_PRAGMA(value) _Pragma(#value)
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_PRAGMA(value) __pragma(value)
+#else
+    #define JSON_HEDLEY_PRAGMA(value)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_PUSH)
+    #undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#endif
+#if defined(JSON_HEDLEY_DIAGNOSTIC_POP)
+    #undef JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("clang diagnostic pop")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH __pragma(warning(push))
+    #define JSON_HEDLEY_DIAGNOSTIC_POP __pragma(warning(pop))
+#elif JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("pop")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,4,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("diag_push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("diag_pop")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH
+    #define JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+
+/* JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat")
+#    if JSON_HEDLEY_HAS_WARNING("-Wc++17-extensions")
+#      if JSON_HEDLEY_HAS_WARNING("-Wc++1z-extensions")
+#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++1z-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#      else
+#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#      endif
+#    else
+#      define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    endif
+#  endif
+#endif
+#if !defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(x) x
+#endif
+
+#if defined(JSON_HEDLEY_CONST_CAST)
+    #undef JSON_HEDLEY_CONST_CAST
+#endif
+#if defined(__cplusplus)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (const_cast<T>(expr))
+#elif \
+  JSON_HEDLEY_HAS_WARNING("-Wcast-qual") || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_CONST_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_REINTERPRET_CAST)
+    #undef JSON_HEDLEY_REINTERPRET_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) (reinterpret_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_CAST)
+    #undef JSON_HEDLEY_STATIC_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) (static_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_CPP_CAST)
+    #undef JSON_HEDLEY_CPP_CAST
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wold-style-cast")
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wold-style-cast\"") \
+    ((T) (expr)) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  elif JSON_HEDLEY_IAR_VERSION_CHECK(8,3,0)
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("diag_suppress=Pe137") \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_CPP_CAST(T, expr) ((T) (expr))
+#  endif
+#else
+#  define JSON_HEDLEY_CPP_CAST(T, expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wdeprecated-declarations")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warning(disable:1478 1786)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:1478 1786))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1216,1444,1445")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:4996))
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1291,1718")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,E_DEPRECATED_ATT,E_DEPRECATED_ATT_MESS)")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,symdeprecated,symdeprecated2)")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress=Pe1444,Pe1215")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warn(disable:2241)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("warning(disable:161)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:161))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 1675")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("GCC diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:4068))
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(16,9,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress=Pe161")
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 161")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-attributes")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("clang diagnostic ignored \"-Wunknown-attributes\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("warning(disable:1292)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:1292))
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:5030))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097,1098")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("error_messages(off,attrskipunsup)")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1173")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress=Pe1097")
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wcast-qual")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("warning(disable:2203 2331)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunused-function")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("clang diagnostic ignored \"-Wunused-function\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("GCC diagnostic ignored \"-Wunused-function\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(1,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION __pragma(warning(disable:4505))
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("diag_suppress 3142")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#endif
+
+#if defined(JSON_HEDLEY_DEPRECATED)
+    #undef JSON_HEDLEY_DEPRECATED
+#endif
+#if defined(JSON_HEDLEY_DEPRECATED_FOR)
+    #undef JSON_HEDLEY_DEPRECATED_FOR
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated("Since " # since))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated("Since " #since "; use " #replacement))
+#elif \
+    (JSON_HEDLEY_HAS_EXTENSION(attribute_deprecated_with_message) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__("Since " #since)))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__("Since " #since "; use " #replacement)))
+#elif defined(__cplusplus) && (__cplusplus >= 201402L)
+    #define JSON_HEDLEY_DEPRECATED(since) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since)]])
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since "; use " #replacement)]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(deprecated) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_PELLES_VERSION_CHECK(6,50,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DEPRECATED(since) _Pragma("deprecated")
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) _Pragma("deprecated")
+#else
+    #define JSON_HEDLEY_DEPRECATED(since)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement)
+#endif
+
+#if defined(JSON_HEDLEY_UNAVAILABLE)
+    #undef JSON_HEDLEY_UNAVAILABLE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warning) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_UNAVAILABLE(available_since) __attribute__((__warning__("Not available until " #available_since)))
+#else
+    #define JSON_HEDLEY_UNAVAILABLE(available_since)
+#endif
+
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#endif
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT_MSG)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warn_unused_result) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) __attribute__((__warn_unused_result__))
+#elif (JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard) >= 201907L)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard(msg)]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+#elif defined(_Check_return_) /* SAL */
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT _Check_return_
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) _Check_return_
+#else
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg)
+#endif
+
+#if defined(JSON_HEDLEY_SENTINEL)
+    #undef JSON_HEDLEY_SENTINEL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(sentinel) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_SENTINEL(position) __attribute__((__sentinel__(position)))
+#else
+    #define JSON_HEDLEY_SENTINEL(position)
+#endif
+
+#if defined(JSON_HEDLEY_NO_RETURN)
+    #undef JSON_HEDLEY_NO_RETURN
+#endif
+#if JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NO_RETURN __noreturn
+#elif \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+    #define JSON_HEDLEY_NO_RETURN _Noreturn
+#elif defined(__cplusplus) && (__cplusplus >= 201103L)
+    #define JSON_HEDLEY_NO_RETURN JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[noreturn]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noreturn) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,2,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("does_not_return")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("FUNC_NEVER_RETURNS;")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute((noreturn))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#else
+    #define JSON_HEDLEY_NO_RETURN
+#endif
+
+#if defined(JSON_HEDLEY_NO_ESCAPE)
+    #undef JSON_HEDLEY_NO_ESCAPE
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(noescape)
+    #define JSON_HEDLEY_NO_ESCAPE __attribute__((__noescape__))
+#else
+    #define JSON_HEDLEY_NO_ESCAPE
+#endif
+
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #undef JSON_HEDLEY_UNREACHABLE
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE_RETURN)
+    #undef JSON_HEDLEY_UNREACHABLE_RETURN
+#endif
+#if defined(JSON_HEDLEY_ASSUME)
+    #undef JSON_HEDLEY_ASSUME
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_ASSUME(expr) __assume(expr)
+#elif JSON_HEDLEY_HAS_BUILTIN(__builtin_assume)
+    #define JSON_HEDLEY_ASSUME(expr) __builtin_assume(expr)
+#elif \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+    #if defined(__cplusplus)
+        #define JSON_HEDLEY_ASSUME(expr) std::_nassert(expr)
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) _nassert(expr)
+    #endif
+#endif
+#if \
+    (JSON_HEDLEY_HAS_BUILTIN(__builtin_unreachable) && (!defined(JSON_HEDLEY_ARM_VERSION))) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,5) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(10,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_UNREACHABLE() __builtin_unreachable()
+#elif defined(JSON_HEDLEY_ASSUME)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+#if !defined(JSON_HEDLEY_ASSUME)
+    #if defined(JSON_HEDLEY_UNREACHABLE)
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, ((expr) ? 1 : (JSON_HEDLEY_UNREACHABLE(), 1)))
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, expr)
+    #endif
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #if  \
+        JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (JSON_HEDLEY_STATIC_CAST(void, JSON_HEDLEY_ASSUME(0)), (value))
+    #else
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) JSON_HEDLEY_UNREACHABLE()
+    #endif
+#else
+    #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (value)
+#endif
+#if !defined(JSON_HEDLEY_UNREACHABLE)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+
+JSON_HEDLEY_DIAGNOSTIC_PUSH
+#if JSON_HEDLEY_HAS_WARNING("-Wpedantic")
+    #pragma clang diagnostic ignored "-Wpedantic"
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat-pedantic") && defined(__cplusplus)
+    #pragma clang diagnostic ignored "-Wc++98-compat-pedantic"
+#endif
+#if JSON_HEDLEY_GCC_HAS_WARNING("-Wvariadic-macros",4,0,0)
+    #if defined(__clang__)
+        #pragma clang diagnostic ignored "-Wvariadic-macros"
+    #elif defined(JSON_HEDLEY_GCC_VERSION)
+        #pragma GCC diagnostic ignored "-Wvariadic-macros"
+    #endif
+#endif
+#if defined(JSON_HEDLEY_NON_NULL)
+    #undef JSON_HEDLEY_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NON_NULL(...) __attribute__((__nonnull__(__VA_ARGS__)))
+#else
+    #define JSON_HEDLEY_NON_NULL(...)
+#endif
+JSON_HEDLEY_DIAGNOSTIC_POP
+
+#if defined(JSON_HEDLEY_PRINTF_FORMAT)
+    #undef JSON_HEDLEY_PRINTF_FORMAT
+#endif
+#if defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && !defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(ms_printf, string_idx, first_to_check)))
+#elif defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(gnu_printf, string_idx, first_to_check)))
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(format) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(__printf__, string_idx, first_to_check)))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(6,0,0)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __declspec(vaformat(printf,string_idx,first_to_check))
+#else
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check)
+#endif
+
+#if defined(JSON_HEDLEY_CONSTEXPR)
+    #undef JSON_HEDLEY_CONSTEXPR
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_CONSTEXPR JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(constexpr)
+    #endif
+#endif
+#if !defined(JSON_HEDLEY_CONSTEXPR)
+    #define JSON_HEDLEY_CONSTEXPR
+#endif
+
+#if defined(JSON_HEDLEY_PREDICT)
+    #undef JSON_HEDLEY_PREDICT
+#endif
+#if defined(JSON_HEDLEY_LIKELY)
+    #undef JSON_HEDLEY_LIKELY
+#endif
+#if defined(JSON_HEDLEY_UNLIKELY)
+    #undef JSON_HEDLEY_UNLIKELY
+#endif
+#if defined(JSON_HEDLEY_UNPREDICTABLE)
+    #undef JSON_HEDLEY_UNPREDICTABLE
+#endif
+#if JSON_HEDLEY_HAS_BUILTIN(__builtin_unpredictable)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) __builtin_unpredictable((expr))
+#endif
+#if \
+  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect_with_probability) && !defined(JSON_HEDLEY_PGI_VERSION)) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(9,0,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PREDICT(expr, value, probability) __builtin_expect_with_probability(  (expr), (value), (probability))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability)   __builtin_expect_with_probability(!!(expr),    1   , (probability))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability)  __builtin_expect_with_probability(!!(expr),    0   , (probability))
+#  define JSON_HEDLEY_LIKELY(expr)                      __builtin_expect                 (!!(expr),    1                  )
+#  define JSON_HEDLEY_UNLIKELY(expr)                    __builtin_expect                 (!!(expr),    0                  )
+#elif \
+  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,27) || \
+  JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) \
+    (((probability) >= 0.9) ? __builtin_expect((expr), (expected)) : (JSON_HEDLEY_STATIC_CAST(void, expected), (expr)))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 1) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 0) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 0) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 1) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_LIKELY(expr)   __builtin_expect(!!(expr), 1)
+#  define JSON_HEDLEY_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
+#else
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) (JSON_HEDLEY_STATIC_CAST(void, expected), (expr))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_LIKELY(expr) (!!(expr))
+#  define JSON_HEDLEY_UNLIKELY(expr) (!!(expr))
+#endif
+#if !defined(JSON_HEDLEY_UNPREDICTABLE)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) JSON_HEDLEY_PREDICT(expr, 1, 0.5)
+#endif
+
+#if defined(JSON_HEDLEY_MALLOC)
+    #undef JSON_HEDLEY_MALLOC
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(malloc) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_MALLOC __attribute__((__malloc__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_MALLOC _Pragma("returns_new_memory")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_MALLOC __declspec(restrict)
+#else
+    #define JSON_HEDLEY_MALLOC
+#endif
+
+#if defined(JSON_HEDLEY_PURE)
+    #undef JSON_HEDLEY_PURE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(pure) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(2,96,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PURE __attribute__((__pure__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+#  define JSON_HEDLEY_PURE _Pragma("does_not_write_global_data")
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) \
+    )
+#  define JSON_HEDLEY_PURE _Pragma("FUNC_IS_PURE;")
+#else
+#  define JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_CONST)
+    #undef JSON_HEDLEY_CONST
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(const) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(2,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_CONST __attribute__((__const__))
+#elif \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_CONST _Pragma("no_side_effect")
+#else
+    #define JSON_HEDLEY_CONST JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_RESTRICT)
+    #undef JSON_HEDLEY_RESTRICT
+#endif
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT restrict
+#elif \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,4) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_RESTRICT __restrict
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,3,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT _Restrict
+#else
+    #define JSON_HEDLEY_RESTRICT
+#endif
+
+#if defined(JSON_HEDLEY_INLINE)
+    #undef JSON_HEDLEY_INLINE
+#endif
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    (defined(__cplusplus) && (__cplusplus >= 199711L))
+    #define JSON_HEDLEY_INLINE inline
+#elif \
+    defined(JSON_HEDLEY_GCC_VERSION) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(6,2,0)
+    #define JSON_HEDLEY_INLINE __inline__
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,1,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_INLINE __inline
+#else
+    #define JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_ALWAYS_INLINE)
+    #undef JSON_HEDLEY_ALWAYS_INLINE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(always_inline) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+  JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __attribute__((__always_inline__)) JSON_HEDLEY_INLINE
+#elif \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __forceinline
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+      JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+      JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) \
+    )
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("FUNC_ALWAYS_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("inline=forced")
+#else
+#  define JSON_HEDLEY_ALWAYS_INLINE JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_NEVER_INLINE)
+    #undef JSON_HEDLEY_NEVER_INLINE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noinline) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute__((__noinline__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(10,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("noinline")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("FUNC_CANNOT_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("inline=never")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute((noinline))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#else
+    #define JSON_HEDLEY_NEVER_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_PRIVATE)
+    #undef JSON_HEDLEY_PRIVATE
+#endif
+#if defined(JSON_HEDLEY_PUBLIC)
+    #undef JSON_HEDLEY_PUBLIC
+#endif
+#if defined(JSON_HEDLEY_IMPORT)
+    #undef JSON_HEDLEY_IMPORT
+#endif
+#if defined(_WIN32) || defined(__CYGWIN__)
+#  define JSON_HEDLEY_PRIVATE
+#  define JSON_HEDLEY_PUBLIC   __declspec(dllexport)
+#  define JSON_HEDLEY_IMPORT   __declspec(dllimport)
+#else
+#  if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(visibility) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    ( \
+      defined(__TI_EABI__) && \
+      ( \
+        (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) \
+      ) \
+    ) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#    define JSON_HEDLEY_PRIVATE __attribute__((__visibility__("hidden")))
+#    define JSON_HEDLEY_PUBLIC  __attribute__((__visibility__("default")))
+#  else
+#    define JSON_HEDLEY_PRIVATE
+#    define JSON_HEDLEY_PUBLIC
+#  endif
+#  define JSON_HEDLEY_IMPORT    extern
+#endif
+
+#if defined(JSON_HEDLEY_NO_THROW)
+    #undef JSON_HEDLEY_NO_THROW
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nothrow) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_NO_THROW __attribute__((__nothrow__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NO_THROW __declspec(nothrow)
+#else
+    #define JSON_HEDLEY_NO_THROW
+#endif
+
+#if defined(JSON_HEDLEY_FALL_THROUGH)
+    #undef JSON_HEDLEY_FALL_THROUGH
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(fallthrough) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_FALL_THROUGH __attribute__((__fallthrough__))
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(clang,fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[clang::fallthrough]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[fallthrough]])
+#elif defined(__fallthrough) /* SAL */
+    #define JSON_HEDLEY_FALL_THROUGH __fallthrough
+#else
+    #define JSON_HEDLEY_FALL_THROUGH
+#endif
+
+#if defined(JSON_HEDLEY_RETURNS_NON_NULL)
+    #undef JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(returns_nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_RETURNS_NON_NULL __attribute__((__returns_nonnull__))
+#elif defined(_Ret_notnull_) /* SAL */
+    #define JSON_HEDLEY_RETURNS_NON_NULL _Ret_notnull_
+#else
+    #define JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+
+#if defined(JSON_HEDLEY_ARRAY_PARAM)
+    #undef JSON_HEDLEY_ARRAY_PARAM
+#endif
+#if \
+    defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
+    !defined(__STDC_NO_VLA__) && \
+    !defined(__cplusplus) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_ARRAY_PARAM(name) (name)
+#else
+    #define JSON_HEDLEY_ARRAY_PARAM(name)
+#endif
+
+#if defined(JSON_HEDLEY_IS_CONSTANT)
+    #undef JSON_HEDLEY_IS_CONSTANT
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_CONSTEXPR)
+    #undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#endif
+/* JSON_HEDLEY_IS_CONSTEXPR_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #undef JSON_HEDLEY_IS_CONSTEXPR_
+#endif
+#if \
+    JSON_HEDLEY_HAS_BUILTIN(__builtin_constant_p) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,19) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0) && !defined(__cplusplus)) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_IS_CONSTANT(expr) __builtin_constant_p(expr)
+#endif
+#if !defined(__cplusplus)
+#  if \
+       JSON_HEDLEY_HAS_BUILTIN(__builtin_types_compatible_p) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+       JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+       JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,24)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0)), int*)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((intptr_t) ((expr) * 0)) : (int*) 0)), int*)
+#endif
+#  elif \
+       ( \
+          defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) && \
+          !defined(JSON_HEDLEY_SUNPRO_VERSION) && \
+          !defined(JSON_HEDLEY_PGI_VERSION) && \
+          !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       (JSON_HEDLEY_HAS_EXTENSION(c_generic_selections) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,3,0)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0), int*: 1, void*: 0)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((intptr_t) * 0) : (int*) 0), int*: 1, void*: 0)
+#endif
+#  elif \
+       defined(JSON_HEDLEY_GCC_VERSION) || \
+       defined(JSON_HEDLEY_INTEL_VERSION) || \
+       defined(JSON_HEDLEY_TINYC_VERSION) || \
+       defined(JSON_HEDLEY_TI_ARMCL_VERSION) || \
+       JSON_HEDLEY_TI_CL430_VERSION_CHECK(18,12,0) || \
+       defined(JSON_HEDLEY_TI_CL2000_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL6X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL7X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CLPRU_VERSION) || \
+       defined(__clang__)
+#    define JSON_HEDLEY_IS_CONSTEXPR_(expr) ( \
+        sizeof(void) != \
+        sizeof(*( \
+                  1 ? \
+                  ((void*) ((expr) * 0L) ) : \
+((struct { char v[sizeof(void) * 2]; } *) 1) \
+                ) \
+              ) \
+                                            )
+#  endif
+#endif
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) JSON_HEDLEY_IS_CONSTEXPR_(expr)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (JSON_HEDLEY_IS_CONSTEXPR_(expr) ? (expr) : (-1))
+#else
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) (0)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_BEGIN_C_DECLS)
+    #undef JSON_HEDLEY_BEGIN_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_END_C_DECLS)
+    #undef JSON_HEDLEY_END_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_C_DECL)
+    #undef JSON_HEDLEY_C_DECL
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_BEGIN_C_DECLS extern "C" {
+    #define JSON_HEDLEY_END_C_DECLS }
+    #define JSON_HEDLEY_C_DECL extern "C"
+#else
+    #define JSON_HEDLEY_BEGIN_C_DECLS
+    #define JSON_HEDLEY_END_C_DECLS
+    #define JSON_HEDLEY_C_DECL
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_ASSERT)
+    #undef JSON_HEDLEY_STATIC_ASSERT
+#endif
+#if \
+  !defined(__cplusplus) && ( \
+      (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)) || \
+      (JSON_HEDLEY_HAS_FEATURE(c_static_assert) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
+      JSON_HEDLEY_GCC_VERSION_CHECK(6,0,0) || \
+      JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+      defined(_Static_assert) \
+    )
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) _Static_assert(expr, message)
+#elif \
+  (defined(__cplusplus) && (__cplusplus >= 201103L)) || \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(16,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(static_assert(expr, message))
+#else
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message)
+#endif
+
+#if defined(JSON_HEDLEY_NULL)
+    #undef JSON_HEDLEY_NULL
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(nullptr)
+    #elif defined(NULL)
+        #define JSON_HEDLEY_NULL NULL
+    #else
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_STATIC_CAST(void*, 0)
+    #endif
+#elif defined(NULL)
+    #define JSON_HEDLEY_NULL NULL
+#else
+    #define JSON_HEDLEY_NULL ((void*) 0)
+#endif
+
+#if defined(JSON_HEDLEY_MESSAGE)
+    #undef JSON_HEDLEY_MESSAGE
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_MESSAGE(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(message msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message msg)
+#elif JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(_CRI message msg)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_WARNING)
+    #undef JSON_HEDLEY_WARNING
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_WARNING(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(clang warning msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,8,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(GCC warning msg)
+#elif \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_REQUIRE)
+    #undef JSON_HEDLEY_REQUIRE
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_MSG)
+    #undef JSON_HEDLEY_REQUIRE_MSG
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(diagnose_if)
+#  if JSON_HEDLEY_HAS_WARNING("-Wgcc-compat")
+#    define JSON_HEDLEY_REQUIRE(expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), #expr, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), msg, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_REQUIRE(expr) __attribute__((diagnose_if(!(expr), #expr, "error")))
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) __attribute__((diagnose_if(!(expr), msg, "error")))
+#  endif
+#else
+#  define JSON_HEDLEY_REQUIRE(expr)
+#  define JSON_HEDLEY_REQUIRE_MSG(expr,msg)
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS)
+    #undef JSON_HEDLEY_FLAGS
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(flag_enum) && (!defined(__cplusplus) || JSON_HEDLEY_HAS_WARNING("-Wbitfield-enum-conversion"))
+    #define JSON_HEDLEY_FLAGS __attribute__((__flag_enum__))
+#else
+    #define JSON_HEDLEY_FLAGS
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS_CAST)
+    #undef JSON_HEDLEY_FLAGS_CAST
+#endif
+#if JSON_HEDLEY_INTEL_VERSION_CHECK(19,0,0)
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        _Pragma("warning(disable:188)") \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) JSON_HEDLEY_STATIC_CAST(T, expr)
+#endif
+
+#if defined(JSON_HEDLEY_EMPTY_BASES)
+    #undef JSON_HEDLEY_EMPTY_BASES
+#endif
+#if \
+    (JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,23918) && !JSON_HEDLEY_MSVC_VERSION_CHECK(20,0,0)) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_EMPTY_BASES __declspec(empty_bases)
+#else
+    #define JSON_HEDLEY_EMPTY_BASES
+#endif
+
+/* Remaining macros are deprecated. */
+
+#if defined(JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) (0)
+#else
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_CLANG_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_BUILTIN)
+    #undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#endif
+#define JSON_HEDLEY_CLANG_HAS_BUILTIN(builtin) JSON_HEDLEY_HAS_BUILTIN(builtin)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_FEATURE)
+    #undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_FEATURE(feature) JSON_HEDLEY_HAS_FEATURE(feature)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_EXTENSION)
+    #undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#endif
+#define JSON_HEDLEY_CLANG_HAS_EXTENSION(extension) JSON_HEDLEY_HAS_EXTENSION(extension)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_DECLSPEC_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_WARNING)
+    #undef JSON_HEDLEY_CLANG_HAS_WARNING
+#endif
+#define JSON_HEDLEY_CLANG_HAS_WARNING(warning) JSON_HEDLEY_HAS_WARNING(warning)
+
+#endif /* !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < X) */
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+
+#include <type_traits>
+
+// #include <nlohmann/detail/meta/void_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename ...Ts> struct make_void
+{
+    using type = void;
+};
+template<typename ...Ts> using void_t = typename make_void<Ts...>::type;
+} // namespace detail
+}  // namespace nlohmann
+
+
+// https://en.cppreference.com/w/cpp/experimental/is_detected
+namespace nlohmann
+{
+namespace detail
+{
+struct nonesuch
+{
+    nonesuch() = delete;
+    ~nonesuch() = delete;
+    nonesuch(nonesuch const&) = delete;
+    nonesuch(nonesuch const&&) = delete;
+    void operator=(nonesuch const&) = delete;
+    void operator=(nonesuch&&) = delete;
+};
+
+template<class Default,
+         class AlwaysVoid,
+         template<class...> class Op,
+         class... Args>
+struct detector
+{
+    using value_t = std::false_type;
+    using type = Default;
+};
+
+template<class Default, template<class...> class Op, class... Args>
+struct detector<Default, void_t<Op<Args...>>, Op, Args...>
+{
+    using value_t = std::true_type;
+    using type = Op<Args...>;
+};
+
+template<template<class...> class Op, class... Args>
+using is_detected = typename detector<nonesuch, void, Op, Args...>::value_t;
+
+template<template<class...> class Op, class... Args>
+struct is_detected_lazy : is_detected<Op, Args...> { };
+
+template<template<class...> class Op, class... Args>
+using detected_t = typename detector<nonesuch, void, Op, Args...>::type;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or = detector<Default, void, Op, Args...>;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or_t = typename detected_or<Default, Op, Args...>::type;
+
+template<class Expected, template<class...> class Op, class... Args>
+using is_detected_exact = std::is_same<Expected, detected_t<Op, Args...>>;
+
+template<class To, template<class...> class Op, class... Args>
+using is_detected_convertible =
+    std::is_convertible<detected_t<Op, Args...>, To>;
+}  // namespace detail
+}  // namespace nlohmann
+
+
+// This file contains all internal macro definitions
+// You MUST include macro_unscope.hpp at the end of json.hpp to undef all of them
+
+// exclude unsupported compilers
+#if !defined(JSON_SKIP_UNSUPPORTED_COMPILER_CHECK)
+    #if defined(__clang__)
+        #if (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__) < 30400
+            #error "unsupported Clang version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #elif defined(__GNUC__) && !(defined(__ICC) || defined(__INTEL_COMPILER))
+        #if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40800
+            #error "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #endif
+#endif
+
+// C++ language standard detection
+// if the user manually specified the used c++ version this is skipped
+#if !defined(JSON_HAS_CPP_20) && !defined(JSON_HAS_CPP_17) && !defined(JSON_HAS_CPP_14) && !defined(JSON_HAS_CPP_11)
+    #if (defined(__cplusplus) && __cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
+        #define JSON_HAS_CPP_20
+        #define JSON_HAS_CPP_17
+        #define JSON_HAS_CPP_14
+    #elif (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_HAS_CXX17) && _HAS_CXX17 == 1) // fix for issue #464
+        #define JSON_HAS_CPP_17
+        #define JSON_HAS_CPP_14
+    #elif (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
+        #define JSON_HAS_CPP_14
+    #endif
+    // the cpp 11 flag is always specified because it is the minimal required version
+    #define JSON_HAS_CPP_11
+#endif
+
+#if !defined(JSON_HAS_FILESYSTEM) && !defined(JSON_HAS_EXPERIMENTAL_FILESYSTEM)
+    #ifdef JSON_HAS_CPP_17
+        #if defined(__cpp_lib_filesystem)
+            #define JSON_HAS_FILESYSTEM 1
+        #elif defined(__cpp_lib_experimental_filesystem)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #elif !defined(__has_include)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #elif __has_include(<filesystem>)
+            #define JSON_HAS_FILESYSTEM 1
+        #elif __has_include(<experimental/filesystem>)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #endif
+
+        // std::filesystem does not work on MinGW GCC 8: https://sourceforge.net/p/mingw-w64/bugs/737/
+        #if defined(__MINGW32__) && defined(__GNUC__) && __GNUC__ == 8
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before GCC 8: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 8
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before Clang 7: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(__clang_major__) && __clang_major__ < 7
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before MSVC 19.14: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(_MSC_VER) && _MSC_VER < 1940
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before iOS 13
+        #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 130000
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before macOS Catalina
+        #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101500
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+    #endif
+#endif
+
+#ifndef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+    #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 0
+#endif
+
+#ifndef JSON_HAS_FILESYSTEM
+    #define JSON_HAS_FILESYSTEM 0
+#endif
+
+// disable documentation warnings on clang
+#if defined(__clang__)
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wdocumentation"
+    #pragma clang diagnostic ignored "-Wdocumentation-unknown-command"
+#endif
+
+// allow disabling exceptions
+#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
+    #define JSON_THROW(exception) throw exception
+    #define JSON_TRY try
+    #define JSON_CATCH(exception) catch(exception)
+    #define JSON_INTERNAL_CATCH(exception) catch(exception)
+#else
+    #include <cstdlib>
+    #define JSON_THROW(exception) std::abort()
+    #define JSON_TRY if(true)
+    #define JSON_CATCH(exception) if(false)
+    #define JSON_INTERNAL_CATCH(exception) if(false)
+#endif
+
+// override exception macros
+#if defined(JSON_THROW_USER)
+    #undef JSON_THROW
+    #define JSON_THROW JSON_THROW_USER
+#endif
+#if defined(JSON_TRY_USER)
+    #undef JSON_TRY
+    #define JSON_TRY JSON_TRY_USER
+#endif
+#if defined(JSON_CATCH_USER)
+    #undef JSON_CATCH
+    #define JSON_CATCH JSON_CATCH_USER
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_CATCH_USER
+#endif
+#if defined(JSON_INTERNAL_CATCH_USER)
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_INTERNAL_CATCH_USER
+#endif
+
+// allow overriding assert
+#if !defined(JSON_ASSERT)
+    #include <cassert> // assert
+    #define JSON_ASSERT(x) assert(x)
+#endif
+
+// allow to access some private functions (needed by the test suite)
+#if defined(JSON_TESTS_PRIVATE)
+    #define JSON_PRIVATE_UNLESS_TESTED public
+#else
+    #define JSON_PRIVATE_UNLESS_TESTED private
+#endif
+
+/*!
+@brief macro to briefly define a mapping between an enum and JSON
+@def NLOHMANN_JSON_SERIALIZE_ENUM
+@since version 3.4.0
+*/
+#define NLOHMANN_JSON_SERIALIZE_ENUM(ENUM_TYPE, ...)                                            \
+    template<typename BasicJsonType>                                                            \
+    inline void to_json(BasicJsonType& j, const ENUM_TYPE& e)                                   \
+    {                                                                                           \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [e](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool  \
+        {                                                                                       \
+            return ej_pair.first == e;                                                          \
+        });                                                                                     \
+        j = ((it != std::end(m)) ? it : std::begin(m))->second;                                 \
+    }                                                                                           \
+    template<typename BasicJsonType>                                                            \
+    inline void from_json(const BasicJsonType& j, ENUM_TYPE& e)                                 \
+    {                                                                                           \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [&j](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool \
+        {                                                                                       \
+            return ej_pair.second == j;                                                         \
+        });                                                                                     \
+        e = ((it != std::end(m)) ? it : std::begin(m))->first;                                  \
+    }
+
+// Ugly macros to avoid uglier copy-paste when specializing basic_json. They
+// may be removed in the future once the class is split.
+
+#define NLOHMANN_BASIC_JSON_TPL_DECLARATION                                \
+    template<template<typename, typename, typename...> class ObjectType,   \
+             template<typename, typename...> class ArrayType,              \
+             class StringType, class BooleanType, class NumberIntegerType, \
+             class NumberUnsignedType, class NumberFloatType,              \
+             template<typename> class AllocatorType,                       \
+             template<typename, typename = void> class JSONSerializer,     \
+             class BinaryType>
+
+#define NLOHMANN_BASIC_JSON_TPL                                            \
+    basic_json<ObjectType, ArrayType, StringType, BooleanType,             \
+    NumberIntegerType, NumberUnsignedType, NumberFloatType,                \
+    AllocatorType, JSONSerializer, BinaryType>
+
+// Macros to simplify conversion from/to types
+
+#define NLOHMANN_JSON_EXPAND( x ) x
+#define NLOHMANN_JSON_GET_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, _64, NAME,...) NAME
+#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \
+        NLOHMANN_JSON_PASTE64, \
+        NLOHMANN_JSON_PASTE63, \
+        NLOHMANN_JSON_PASTE62, \
+        NLOHMANN_JSON_PASTE61, \
+        NLOHMANN_JSON_PASTE60, \
+        NLOHMANN_JSON_PASTE59, \
+        NLOHMANN_JSON_PASTE58, \
+        NLOHMANN_JSON_PASTE57, \
+        NLOHMANN_JSON_PASTE56, \
+        NLOHMANN_JSON_PASTE55, \
+        NLOHMANN_JSON_PASTE54, \
+        NLOHMANN_JSON_PASTE53, \
+        NLOHMANN_JSON_PASTE52, \
+        NLOHMANN_JSON_PASTE51, \
+        NLOHMANN_JSON_PASTE50, \
+        NLOHMANN_JSON_PASTE49, \
+        NLOHMANN_JSON_PASTE48, \
+        NLOHMANN_JSON_PASTE47, \
+        NLOHMANN_JSON_PASTE46, \
+        NLOHMANN_JSON_PASTE45, \
+        NLOHMANN_JSON_PASTE44, \
+        NLOHMANN_JSON_PASTE43, \
+        NLOHMANN_JSON_PASTE42, \
+        NLOHMANN_JSON_PASTE41, \
+        NLOHMANN_JSON_PASTE40, \
+        NLOHMANN_JSON_PASTE39, \
+        NLOHMANN_JSON_PASTE38, \
+        NLOHMANN_JSON_PASTE37, \
+        NLOHMANN_JSON_PASTE36, \
+        NLOHMANN_JSON_PASTE35, \
+        NLOHMANN_JSON_PASTE34, \
+        NLOHMANN_JSON_PASTE33, \
+        NLOHMANN_JSON_PASTE32, \
+        NLOHMANN_JSON_PASTE31, \
+        NLOHMANN_JSON_PASTE30, \
+        NLOHMANN_JSON_PASTE29, \
+        NLOHMANN_JSON_PASTE28, \
+        NLOHMANN_JSON_PASTE27, \
+        NLOHMANN_JSON_PASTE26, \
+        NLOHMANN_JSON_PASTE25, \
+        NLOHMANN_JSON_PASTE24, \
+        NLOHMANN_JSON_PASTE23, \
+        NLOHMANN_JSON_PASTE22, \
+        NLOHMANN_JSON_PASTE21, \
+        NLOHMANN_JSON_PASTE20, \
+        NLOHMANN_JSON_PASTE19, \
+        NLOHMANN_JSON_PASTE18, \
+        NLOHMANN_JSON_PASTE17, \
+        NLOHMANN_JSON_PASTE16, \
+        NLOHMANN_JSON_PASTE15, \
+        NLOHMANN_JSON_PASTE14, \
+        NLOHMANN_JSON_PASTE13, \
+        NLOHMANN_JSON_PASTE12, \
+        NLOHMANN_JSON_PASTE11, \
+        NLOHMANN_JSON_PASTE10, \
+        NLOHMANN_JSON_PASTE9, \
+        NLOHMANN_JSON_PASTE8, \
+        NLOHMANN_JSON_PASTE7, \
+        NLOHMANN_JSON_PASTE6, \
+        NLOHMANN_JSON_PASTE5, \
+        NLOHMANN_JSON_PASTE4, \
+        NLOHMANN_JSON_PASTE3, \
+        NLOHMANN_JSON_PASTE2, \
+        NLOHMANN_JSON_PASTE1)(__VA_ARGS__))
+#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)
+#define NLOHMANN_JSON_PASTE3(func, v1, v2) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE2(func, v2)
+#define NLOHMANN_JSON_PASTE4(func, v1, v2, v3) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE3(func, v2, v3)
+#define NLOHMANN_JSON_PASTE5(func, v1, v2, v3, v4) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE4(func, v2, v3, v4)
+#define NLOHMANN_JSON_PASTE6(func, v1, v2, v3, v4, v5) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE5(func, v2, v3, v4, v5)
+#define NLOHMANN_JSON_PASTE7(func, v1, v2, v3, v4, v5, v6) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE6(func, v2, v3, v4, v5, v6)
+#define NLOHMANN_JSON_PASTE8(func, v1, v2, v3, v4, v5, v6, v7) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE7(func, v2, v3, v4, v5, v6, v7)
+#define NLOHMANN_JSON_PASTE9(func, v1, v2, v3, v4, v5, v6, v7, v8) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE8(func, v2, v3, v4, v5, v6, v7, v8)
+#define NLOHMANN_JSON_PASTE10(func, v1, v2, v3, v4, v5, v6, v7, v8, v9) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE9(func, v2, v3, v4, v5, v6, v7, v8, v9)
+#define NLOHMANN_JSON_PASTE11(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE10(func, v2, v3, v4, v5, v6, v7, v8, v9, v10)
+#define NLOHMANN_JSON_PASTE12(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE11(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11)
+#define NLOHMANN_JSON_PASTE13(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE12(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12)
+#define NLOHMANN_JSON_PASTE14(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE13(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13)
+#define NLOHMANN_JSON_PASTE15(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE14(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14)
+#define NLOHMANN_JSON_PASTE16(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE15(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15)
+#define NLOHMANN_JSON_PASTE17(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE16(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16)
+#define NLOHMANN_JSON_PASTE18(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE17(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17)
+#define NLOHMANN_JSON_PASTE19(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE18(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18)
+#define NLOHMANN_JSON_PASTE20(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE19(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19)
+#define NLOHMANN_JSON_PASTE21(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE20(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20)
+#define NLOHMANN_JSON_PASTE22(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE21(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21)
+#define NLOHMANN_JSON_PASTE23(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE22(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22)
+#define NLOHMANN_JSON_PASTE24(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE23(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23)
+#define NLOHMANN_JSON_PASTE25(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE24(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24)
+#define NLOHMANN_JSON_PASTE26(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE25(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25)
+#define NLOHMANN_JSON_PASTE27(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE26(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26)
+#define NLOHMANN_JSON_PASTE28(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE27(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27)
+#define NLOHMANN_JSON_PASTE29(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE28(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28)
+#define NLOHMANN_JSON_PASTE30(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE29(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29)
+#define NLOHMANN_JSON_PASTE31(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE30(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30)
+#define NLOHMANN_JSON_PASTE32(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE31(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31)
+#define NLOHMANN_JSON_PASTE33(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE32(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32)
+#define NLOHMANN_JSON_PASTE34(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE33(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33)
+#define NLOHMANN_JSON_PASTE35(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE34(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34)
+#define NLOHMANN_JSON_PASTE36(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE35(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35)
+#define NLOHMANN_JSON_PASTE37(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE36(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36)
+#define NLOHMANN_JSON_PASTE38(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE37(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37)
+#define NLOHMANN_JSON_PASTE39(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE38(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38)
+#define NLOHMANN_JSON_PASTE40(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE39(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39)
+#define NLOHMANN_JSON_PASTE41(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE40(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40)
+#define NLOHMANN_JSON_PASTE42(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE41(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41)
+#define NLOHMANN_JSON_PASTE43(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE42(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42)
+#define NLOHMANN_JSON_PASTE44(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE43(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43)
+#define NLOHMANN_JSON_PASTE45(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE44(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44)
+#define NLOHMANN_JSON_PASTE46(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE45(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45)
+#define NLOHMANN_JSON_PASTE47(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE46(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46)
+#define NLOHMANN_JSON_PASTE48(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE47(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47)
+#define NLOHMANN_JSON_PASTE49(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE48(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48)
+#define NLOHMANN_JSON_PASTE50(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE49(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49)
+#define NLOHMANN_JSON_PASTE51(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE50(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50)
+#define NLOHMANN_JSON_PASTE52(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE51(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51)
+#define NLOHMANN_JSON_PASTE53(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE52(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52)
+#define NLOHMANN_JSON_PASTE54(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE53(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53)
+#define NLOHMANN_JSON_PASTE55(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE54(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54)
+#define NLOHMANN_JSON_PASTE56(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE55(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55)
+#define NLOHMANN_JSON_PASTE57(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE56(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56)
+#define NLOHMANN_JSON_PASTE58(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE57(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57)
+#define NLOHMANN_JSON_PASTE59(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE58(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58)
+#define NLOHMANN_JSON_PASTE60(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE59(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59)
+#define NLOHMANN_JSON_PASTE61(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE60(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60)
+#define NLOHMANN_JSON_PASTE62(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE61(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61)
+#define NLOHMANN_JSON_PASTE63(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE62(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62)
+#define NLOHMANN_JSON_PASTE64(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE63(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63)
+
+#define NLOHMANN_JSON_TO(v1) nlohmann_json_j[#v1] = nlohmann_json_t.v1;
+#define NLOHMANN_JSON_FROM(v1) nlohmann_json_j.at(#v1).get_to(nlohmann_json_t.v1);
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+
+// inspired from https://stackoverflow.com/a/26745591
+// allows to call any std function as if (e.g. with begin):
+// using std::begin; begin(x);
+//
+// it allows using the detected idiom to retrieve the return type
+// of such an expression
+#define NLOHMANN_CAN_CALL_STD_FUNC_IMPL(std_name)                                 \
+    namespace detail {                                                            \
+    using std::std_name;                                                          \
+    \
+    template<typename... T>                                                       \
+    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
+    }                                                                             \
+    \
+    namespace detail2 {                                                           \
+    struct std_name##_tag                                                         \
+    {                                                                             \
+    };                                                                            \
+    \
+    template<typename... T>                                                       \
+    std_name##_tag std_name(T&&...);                                              \
+    \
+    template<typename... T>                                                       \
+    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
+    \
+    template<typename... T>                                                       \
+    struct would_call_std_##std_name                                              \
+    {                                                                             \
+        static constexpr auto const value = ::nlohmann::detail::                  \
+                                            is_detected_exact<std_name##_tag, result_of_##std_name, T...>::value; \
+    };                                                                            \
+    } /* namespace detail2 */ \
+    \
+    template<typename... T>                                                       \
+    struct would_call_std_##std_name : detail2::would_call_std_##std_name<T...>   \
+    {                                                                             \
+    }
+
+#ifndef JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_USE_IMPLICIT_CONVERSIONS 1
+#endif
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_EXPLICIT
+#else
+    #define JSON_EXPLICIT explicit
+#endif
+
+#ifndef JSON_DIAGNOSTICS
+    #define JSON_DIAGNOSTICS 0
+#endif
+
+
+namespace nlohmann
+{
+namespace detail
+{
+
+/*!
+@brief replace all occurrences of a substring by another string
+
+@param[in,out] s  the string to manipulate; changed so that all
+               occurrences of @a f are replaced with @a t
+@param[in]     f  the substring to replace with @a t
+@param[in]     t  the string to replace @a f
+
+@pre The search string @a f must not be empty. **This precondition is
+enforced with an assertion.**
+
+@since version 2.0.0
+*/
+inline void replace_substring(std::string& s, const std::string& f,
+                              const std::string& t)
+{
+    JSON_ASSERT(!f.empty());
+    for (auto pos = s.find(f);                // find first occurrence of f
+            pos != std::string::npos;         // make sure f was found
+            s.replace(pos, f.size(), t),      // replace with t, and
+            pos = s.find(f, pos + t.size()))  // find next occurrence of f
+    {}
+}
+
+/*!
+ * @brief string escaping as described in RFC 6901 (Sect. 4)
+ * @param[in] s string to escape
+ * @return    escaped string
+ *
+ * Note the order of escaping "~" to "~0" and "/" to "~1" is important.
+ */
+inline std::string escape(std::string s)
+{
+    replace_substring(s, "~", "~0");
+    replace_substring(s, "/", "~1");
+    return s;
+}
+
+/*!
+ * @brief string unescaping as described in RFC 6901 (Sect. 4)
+ * @param[in] s string to unescape
+ * @return    unescaped string
+ *
+ * Note the order of escaping "~1" to "/" and "~0" to "~" is important.
+ */
+static void unescape(std::string& s)
+{
+    replace_substring(s, "~1", "/");
+    replace_substring(s, "~0", "~");
+}
+
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/input/position_t.hpp>
+
+
+#include <cstddef> // size_t
+
+namespace nlohmann
+{
+namespace detail
+{
+/// struct to capture the start position of the current token
+struct position_t
+{
+    /// the total number of characters read
+    std::size_t chars_read_total = 0;
+    /// the number of characters read in the current line
+    std::size_t chars_read_current_line = 0;
+    /// the number of lines read
+    std::size_t lines_read = 0;
+
+    /// conversion to size_t to preserve SAX interface
+    constexpr operator size_t() const
+    {
+        return chars_read_total;
+    }
+};
+
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+////////////////
+// exceptions //
+////////////////
+
+/// @brief general exception of the @ref basic_json class
+/// @sa https://json.nlohmann.me/api/basic_json/exception/
+class exception : public std::exception
+{
+  public:
+    /// returns the explanatory string
+    const char* what() const noexcept override
+    {
+        return m.what();
+    }
+
+    /// the id of the exception
+    const int id; // NOLINT(cppcoreguidelines-non-private-member-variables-in-classes)
+
+  protected:
+    JSON_HEDLEY_NON_NULL(3)
+    exception(int id_, const char* what_arg) : id(id_), m(what_arg) {} // NOLINT(bugprone-throw-keyword-missing)
+
+    static std::string name(const std::string& ename, int id_)
+    {
+        return "[json.exception." + ename + "." + std::to_string(id_) + "] ";
+    }
+
+    template<typename BasicJsonType>
+    static std::string diagnostics(const BasicJsonType& leaf_element)
+    {
+#if JSON_DIAGNOSTICS
+        std::vector<std::string> tokens;
+        for (const auto* current = &leaf_element; current->m_parent != nullptr; current = current->m_parent)
+        {
+            switch (current->m_parent->type())
+            {
+                case value_t::array:
+                {
+                    for (std::size_t i = 0; i < current->m_parent->m_value.array->size(); ++i)
+                    {
+                        if (&current->m_parent->m_value.array->operator[](i) == current)
+                        {
+                            tokens.emplace_back(std::to_string(i));
+                            break;
+                        }
+                    }
+                    break;
+                }
+
+                case value_t::object:
+                {
+                    for (const auto& element : *current->m_parent->m_value.object)
+                    {
+                        if (&element.second == current)
+                        {
+                            tokens.emplace_back(element.first.c_str());
+                            break;
+                        }
+                    }
+                    break;
+                }
+
+                case value_t::null: // LCOV_EXCL_LINE
+                case value_t::string: // LCOV_EXCL_LINE
+                case value_t::boolean: // LCOV_EXCL_LINE
+                case value_t::number_integer: // LCOV_EXCL_LINE
+                case value_t::number_unsigned: // LCOV_EXCL_LINE
+                case value_t::number_float: // LCOV_EXCL_LINE
+                case value_t::binary: // LCOV_EXCL_LINE
+                case value_t::discarded: // LCOV_EXCL_LINE
+                default:   // LCOV_EXCL_LINE
+                    break; // LCOV_EXCL_LINE
+            }
+        }
+
+        if (tokens.empty())
+        {
+            return "";
+        }
+
+        return "(" + std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
+                                     [](const std::string & a, const std::string & b)
+        {
+            return a + "/" + detail::escape(b);
+        }) + ") ";
+#else
+        static_cast<void>(leaf_element);
+        return "";
+#endif
+    }
+
+  private:
+    /// an exception object as storage for error messages
+    std::runtime_error m;
+};
+
+/// @brief exception indicating a parse error
+/// @sa https://json.nlohmann.me/api/basic_json/parse_error/
+class parse_error : public exception
+{
+  public:
+    /*!
+    @brief create a parse error exception
+    @param[in] id_       the id of the exception
+    @param[in] pos       the position where the error occurred (or with
+                         chars_read_total=0 if the position cannot be
+                         determined)
+    @param[in] what_arg  the explanatory string
+    @return parse_error object
+    */
+    template<typename BasicJsonType>
+    static parse_error create(int id_, const position_t& pos, const std::string& what_arg, const BasicJsonType& context)
+    {
+        std::string w = exception::name("parse_error", id_) + "parse error" +
+                        position_string(pos) + ": " + exception::diagnostics(context) + what_arg;
+        return {id_, pos.chars_read_total, w.c_str()};
+    }
+
+    template<typename BasicJsonType>
+    static parse_error create(int id_, std::size_t byte_, const std::string& what_arg, const BasicJsonType& context)
+    {
+        std::string w = exception::name("parse_error", id_) + "parse error" +
+                        (byte_ != 0 ? (" at byte " + std::to_string(byte_)) : "") +
+                        ": " + exception::diagnostics(context) + what_arg;
+        return {id_, byte_, w.c_str()};
+    }
+
+    /*!
+    @brief byte index of the parse error
+
+    The byte index of the last read character in the input file.
+
+    @note For an input with n bytes, 1 is the index of the first character and
+          n+1 is the index of the terminating null byte or the end of file.
+          This also holds true when reading a byte vector (CBOR or MessagePack).
+    */
+    const std::size_t byte;
+
+  private:
+    parse_error(int id_, std::size_t byte_, const char* what_arg)
+        : exception(id_, what_arg), byte(byte_) {}
+
+    static std::string position_string(const position_t& pos)
+    {
+        return " at line " + std::to_string(pos.lines_read + 1) +
+               ", column " + std::to_string(pos.chars_read_current_line);
+    }
+};
+
+/// @brief exception indicating errors with iterators
+/// @sa https://json.nlohmann.me/api/basic_json/invalid_iterator/
+class invalid_iterator : public exception
+{
+  public:
+    template<typename BasicJsonType>
+    static invalid_iterator create(int id_, const std::string& what_arg, const BasicJsonType& context)
+    {
+        std::string w = exception::name("invalid_iterator", id_) + exception::diagnostics(context) + what_arg;
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    invalid_iterator(int id_, const char* what_arg)
+        : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating executing a member function with a wrong type
+/// @sa https://json.nlohmann.me/api/basic_json/type_error/
+class type_error : public exception
+{
+  public:
+    template<typename BasicJsonType>
+    static type_error create(int id_, const std::string& what_arg, const BasicJsonType& context)
+    {
+        std::string w = exception::name("type_error", id_) + exception::diagnostics(context) + what_arg;
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating access out of the defined range
+/// @sa https://json.nlohmann.me/api/basic_json/out_of_range/
+class out_of_range : public exception
+{
+  public:
+    template<typename BasicJsonType>
+    static out_of_range create(int id_, const std::string& what_arg, const BasicJsonType& context)
+    {
+        std::string w = exception::name("out_of_range", id_) + exception::diagnostics(context) + what_arg;
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating other library errors
+/// @sa https://json.nlohmann.me/api/basic_json/other_error/
+class other_error : public exception
+{
+  public:
+    template<typename BasicJsonType>
+    static other_error create(int id_, const std::string& what_arg, const BasicJsonType& context)
+    {
+        std::string w = exception::name("other_error", id_) + exception::diagnostics(context) + what_arg;
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+
+#include <cstddef> // size_t
+#include <type_traits> // conditional, enable_if, false_type, integral_constant, is_constructible, is_integral, is_same, remove_cv, remove_reference, true_type
+#include <utility> // index_sequence, make_index_sequence, index_sequence_for
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+
+template<typename T>
+using uncvref_t = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
+
+#ifdef JSON_HAS_CPP_14
+
+// the following utilities are natively available in C++14
+using std::enable_if_t;
+using std::index_sequence;
+using std::make_index_sequence;
+using std::index_sequence_for;
+
+#else
+
+// alias templates to reduce boilerplate
+template<bool B, typename T = void>
+using enable_if_t = typename std::enable_if<B, T>::type;
+
+// The following code is taken from https://github.com/abseil/abseil-cpp/blob/10cb35e459f5ecca5b2ff107635da0bfa41011b4/absl/utility/utility.h
+// which is part of Google Abseil (https://github.com/abseil/abseil-cpp), licensed under the Apache License 2.0.
+
+//// START OF CODE FROM GOOGLE ABSEIL
+
+// integer_sequence
+//
+// Class template representing a compile-time integer sequence. An instantiation
+// of `integer_sequence<T, Ints...>` has a sequence of integers encoded in its
+// type through its template arguments (which is a common need when
+// working with C++11 variadic templates). `absl::integer_sequence` is designed
+// to be a drop-in replacement for C++14's `std::integer_sequence`.
+//
+// Example:
+//
+//   template< class T, T... Ints >
+//   void user_function(integer_sequence<T, Ints...>);
+//
+//   int main()
+//   {
+//     // user_function's `T` will be deduced to `int` and `Ints...`
+//     // will be deduced to `0, 1, 2, 3, 4`.
+//     user_function(make_integer_sequence<int, 5>());
+//   }
+template <typename T, T... Ints>
+struct integer_sequence
+{
+    using value_type = T;
+    static constexpr std::size_t size() noexcept
+    {
+        return sizeof...(Ints);
+    }
+};
+
+// index_sequence
+//
+// A helper template for an `integer_sequence` of `size_t`,
+// `absl::index_sequence` is designed to be a drop-in replacement for C++14's
+// `std::index_sequence`.
+template <size_t... Ints>
+using index_sequence = integer_sequence<size_t, Ints...>;
+
+namespace utility_internal
+{
+
+template <typename Seq, size_t SeqSize, size_t Rem>
+struct Extend;
+
+// Note that SeqSize == sizeof...(Ints). It's passed explicitly for efficiency.
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 0>
+{
+    using type = integer_sequence < T, Ints..., (Ints + SeqSize)... >;
+};
+
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 1>
+{
+    using type = integer_sequence < T, Ints..., (Ints + SeqSize)..., 2 * SeqSize >;
+};
+
+// Recursion helper for 'make_integer_sequence<T, N>'.
+// 'Gen<T, N>::type' is an alias for 'integer_sequence<T, 0, 1, ... N-1>'.
+template <typename T, size_t N>
+struct Gen
+{
+    using type =
+        typename Extend < typename Gen < T, N / 2 >::type, N / 2, N % 2 >::type;
+};
+
+template <typename T>
+struct Gen<T, 0>
+{
+    using type = integer_sequence<T>;
+};
+
+}  // namespace utility_internal
+
+// Compile-time sequences of integers
+
+// make_integer_sequence
+//
+// This template alias is equivalent to
+// `integer_sequence<int, 0, 1, ..., N-1>`, and is designed to be a drop-in
+// replacement for C++14's `std::make_integer_sequence`.
+template <typename T, T N>
+using make_integer_sequence = typename utility_internal::Gen<T, N>::type;
+
+// make_index_sequence
+//
+// This template alias is equivalent to `index_sequence<0, 1, ..., N-1>`,
+// and is designed to be a drop-in replacement for C++14's
+// `std::make_index_sequence`.
+template <size_t N>
+using make_index_sequence = make_integer_sequence<size_t, N>;
+
+// index_sequence_for
+//
+// Converts a typename pack into an index sequence of the same length, and
+// is designed to be a drop-in replacement for C++14's
+// `std::index_sequence_for()`
+template <typename... Ts>
+using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
+
+//// END OF CODE FROM GOOGLE ABSEIL
+
+#endif
+
+// dispatch utility (taken from ranges-v3)
+template<unsigned N> struct priority_tag : priority_tag < N - 1 > {};
+template<> struct priority_tag<0> {};
+
+// taken from ranges-v3
+template<typename T>
+struct static_const
+{
+    static constexpr T value{};
+};
+
+template<typename T>
+constexpr T static_const<T>::value; // NOLINT(readability-redundant-declaration)
+
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/meta/identity_tag.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+// dispatching helper struct
+template <class T> struct identity_tag {};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+#include <limits> // numeric_limits
+#include <type_traits> // false_type, is_constructible, is_integral, is_same, true_type
+#include <utility> // declval
+#include <tuple> // tuple
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+// #include <nlohmann/detail/iterators/iterator_traits.hpp>
+
+
+#include <iterator> // random_access_iterator_tag
+
+// #include <nlohmann/detail/meta/void_t.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename It, typename = void>
+struct iterator_types {};
+
+template<typename It>
+struct iterator_types <
+    It,
+    void_t<typename It::difference_type, typename It::value_type, typename It::pointer,
+    typename It::reference, typename It::iterator_category >>
+{
+    using difference_type = typename It::difference_type;
+    using value_type = typename It::value_type;
+    using pointer = typename It::pointer;
+    using reference = typename It::reference;
+    using iterator_category = typename It::iterator_category;
+};
+
+// This is required as some compilers implement std::iterator_traits in a way that
+// doesn't work with SFINAE. See https://github.com/nlohmann/json/issues/1341.
+template<typename T, typename = void>
+struct iterator_traits
+{
+};
+
+template<typename T>
+struct iterator_traits < T, enable_if_t < !std::is_pointer<T>::value >>
+            : iterator_types<T>
+{
+};
+
+template<typename T>
+struct iterator_traits<T*, enable_if_t<std::is_object<T>::value>>
+{
+    using iterator_category = std::random_access_iterator_tag;
+    using value_type = T;
+    using difference_type = ptrdiff_t;
+    using pointer = T*;
+    using reference = T&;
+};
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/meta/call_std/begin.hpp>
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+NLOHMANN_CAN_CALL_STD_FUNC_IMPL(begin);
+} // namespace nlohmann
+
+// #include <nlohmann/detail/meta/call_std/end.hpp>
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+NLOHMANN_CAN_CALL_STD_FUNC_IMPL(end);
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+// #include <nlohmann/json_fwd.hpp>
+#ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
+#define INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+#include <cstdint> // int64_t, uint64_t
+#include <map> // map
+#include <memory> // allocator
+#include <string> // string
+#include <vector> // vector
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+namespace nlohmann
+{
+/*!
+@brief default JSONSerializer template argument
+
+This serializer ignores the template arguments and uses ADL
+([argument-dependent lookup](https://en.cppreference.com/w/cpp/language/adl))
+for serialization.
+*/
+template<typename T = void, typename SFINAE = void>
+struct adl_serializer;
+
+/// a class to store JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/
+template<template<typename U, typename V, typename... Args> class ObjectType =
+         std::map,
+         template<typename U, typename... Args> class ArrayType = std::vector,
+         class StringType = std::string, class BooleanType = bool,
+         class NumberIntegerType = std::int64_t,
+         class NumberUnsignedType = std::uint64_t,
+         class NumberFloatType = double,
+         template<typename U> class AllocatorType = std::allocator,
+         template<typename T, typename SFINAE = void> class JSONSerializer =
+         adl_serializer,
+         class BinaryType = std::vector<std::uint8_t>>
+class basic_json;
+
+/// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+/// @sa https://json.nlohmann.me/api/json_pointer/
+template<typename BasicJsonType>
+class json_pointer;
+
+/*!
+@brief default specialization
+@sa https://json.nlohmann.me/api/json/
+*/
+using json = basic_json<>;
+
+/// @brief a minimal map-like container that preserves insertion order
+/// @sa https://json.nlohmann.me/api/ordered_map/
+template<class Key, class T, class IgnoredLess, class Allocator>
+struct ordered_map;
+
+/// @brief specialization that maintains the insertion order of object keys
+/// @sa https://json.nlohmann.me/api/ordered_json/
+using ordered_json = basic_json<nlohmann::ordered_map>;
+
+}  // namespace nlohmann
+
+#endif  // INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+
+namespace nlohmann
+{
+/*!
+@brief detail namespace with internal helper functions
+
+This namespace collects functions that should not be exposed,
+implementations of some @ref basic_json methods, and meta-programming helpers.
+
+@since version 2.1.0
+*/
+namespace detail
+{
+/////////////
+// helpers //
+/////////////
+
+// Note to maintainers:
+//
+// Every trait in this file expects a non CV-qualified type.
+// The only exceptions are in the 'aliases for detected' section
+// (i.e. those of the form: decltype(T::member_function(std::declval<T>())))
+//
+// In this case, T has to be properly CV-qualified to constraint the function arguments
+// (e.g. to_json(BasicJsonType&, const T&))
+
+template<typename> struct is_basic_json : std::false_type {};
+
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
+
+//////////////////////
+// json_ref helpers //
+//////////////////////
+
+template<typename>
+class json_ref;
+
+template<typename>
+struct is_json_ref : std::false_type {};
+
+template<typename T>
+struct is_json_ref<json_ref<T>> : std::true_type {};
+
+//////////////////////////
+// aliases for detected //
+//////////////////////////
+
+template<typename T>
+using mapped_type_t = typename T::mapped_type;
+
+template<typename T>
+using key_type_t = typename T::key_type;
+
+template<typename T>
+using value_type_t = typename T::value_type;
+
+template<typename T>
+using difference_type_t = typename T::difference_type;
+
+template<typename T>
+using pointer_t = typename T::pointer;
+
+template<typename T>
+using reference_t = typename T::reference;
+
+template<typename T>
+using iterator_category_t = typename T::iterator_category;
+
+template<typename T, typename... Args>
+using to_json_function = decltype(T::to_json(std::declval<Args>()...));
+
+template<typename T, typename... Args>
+using from_json_function = decltype(T::from_json(std::declval<Args>()...));
+
+template<typename T, typename U>
+using get_template_function = decltype(std::declval<T>().template get<U>());
+
+// trait checking if JSONSerializer<T>::from_json(json const&, udt&) exists
+template<typename BasicJsonType, typename T, typename = void>
+struct has_from_json : std::false_type {};
+
+// trait checking if j.get<T> is valid
+// use this trait instead of std::is_constructible or std::is_convertible,
+// both rely on, or make use of implicit conversions, and thus fail when T
+// has several constructors/operator= (see https://github.com/nlohmann/json/issues/958)
+template <typename BasicJsonType, typename T>
+struct is_getable
+{
+    static constexpr bool value = is_detected<get_template_function, const BasicJsonType&, T>::value;
+};
+
+template<typename BasicJsonType, typename T>
+struct has_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, from_json_function, serializer,
+        const BasicJsonType&, T&>::value;
+};
+
+// This trait checks if JSONSerializer<T>::from_json(json const&) exists
+// this overload is used for non-default-constructible user-defined-types
+template<typename BasicJsonType, typename T, typename = void>
+struct has_non_default_from_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_non_default_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<T, from_json_function, serializer,
+        const BasicJsonType&>::value;
+};
+
+// This trait checks if BasicJsonType::json_serializer<T>::to_json exists
+// Do not evaluate the trait when T is a basic_json type, to avoid template instantiation infinite recursion.
+template<typename BasicJsonType, typename T, typename = void>
+struct has_to_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_to_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, to_json_function, serializer, BasicJsonType&,
+        T>::value;
+};
+
+
+///////////////////
+// is_ functions //
+///////////////////
+
+// https://en.cppreference.com/w/cpp/types/conjunction
+template<class...> struct conjunction : std::true_type { };
+template<class B1> struct conjunction<B1> : B1 { };
+template<class B1, class... Bn>
+struct conjunction<B1, Bn...>
+: std::conditional<bool(B1::value), conjunction<Bn...>, B1>::type {};
+
+// https://en.cppreference.com/w/cpp/types/negation
+template<class B> struct negation : std::integral_constant < bool, !B::value > { };
+
+// Reimplementation of is_constructible and is_default_constructible, due to them being broken for
+// std::pair and std::tuple until LWG 2367 fix (see https://cplusplus.github.io/LWG/lwg-defects.html#2367).
+// This causes compile errors in e.g. clang 3.5 or gcc 4.9.
+template <typename T>
+struct is_default_constructible : std::is_default_constructible<T> {};
+
+template <typename T1, typename T2>
+struct is_default_constructible<std::pair<T1, T2>>
+            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+
+template <typename T1, typename T2>
+struct is_default_constructible<const std::pair<T1, T2>>
+            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+
+template <typename... Ts>
+struct is_default_constructible<std::tuple<Ts...>>
+            : conjunction<is_default_constructible<Ts>...> {};
+
+template <typename... Ts>
+struct is_default_constructible<const std::tuple<Ts...>>
+            : conjunction<is_default_constructible<Ts>...> {};
+
+
+template <typename T, typename... Args>
+struct is_constructible : std::is_constructible<T, Args...> {};
+
+template <typename T1, typename T2>
+struct is_constructible<std::pair<T1, T2>> : is_default_constructible<std::pair<T1, T2>> {};
+
+template <typename T1, typename T2>
+struct is_constructible<const std::pair<T1, T2>> : is_default_constructible<const std::pair<T1, T2>> {};
+
+template <typename... Ts>
+struct is_constructible<std::tuple<Ts...>> : is_default_constructible<std::tuple<Ts...>> {};
+
+template <typename... Ts>
+struct is_constructible<const std::tuple<Ts...>> : is_default_constructible<const std::tuple<Ts...>> {};
+
+
+template<typename T, typename = void>
+struct is_iterator_traits : std::false_type {};
+
+template<typename T>
+struct is_iterator_traits<iterator_traits<T>>
+{
+  private:
+    using traits = iterator_traits<T>;
+
+  public:
+    static constexpr auto value =
+        is_detected<value_type_t, traits>::value &&
+        is_detected<difference_type_t, traits>::value &&
+        is_detected<pointer_t, traits>::value &&
+        is_detected<iterator_category_t, traits>::value &&
+        is_detected<reference_t, traits>::value;
+};
+
+template<typename T>
+struct is_range
+{
+  private:
+    using t_ref = typename std::add_lvalue_reference<T>::type;
+
+    using iterator = detected_t<result_of_begin, t_ref>;
+    using sentinel = detected_t<result_of_end, t_ref>;
+
+    // to be 100% correct, it should use https://en.cppreference.com/w/cpp/iterator/input_or_output_iterator
+    // and https://en.cppreference.com/w/cpp/iterator/sentinel_for
+    // but reimplementing these would be too much work, as a lot of other concepts are used underneath
+    static constexpr auto is_iterator_begin =
+        is_iterator_traits<iterator_traits<iterator>>::value;
+
+  public:
+    static constexpr bool value = !std::is_same<iterator, nonesuch>::value && !std::is_same<sentinel, nonesuch>::value && is_iterator_begin;
+};
+
+template<typename R>
+using iterator_t = enable_if_t<is_range<R>::value, result_of_begin<decltype(std::declval<R&>())>>;
+
+template<typename T>
+using range_value_t = value_type_t<iterator_traits<iterator_t<T>>>;
+
+// The following implementation of is_complete_type is taken from
+// https://blogs.msdn.microsoft.com/vcblog/2015/12/02/partial-support-for-expression-sfinae-in-vs-2015-update-1/
+// and is written by Xiang Fan who agreed to using it in this library.
+
+template<typename T, typename = void>
+struct is_complete_type : std::false_type {};
+
+template<typename T>
+struct is_complete_type<T, decltype(void(sizeof(T)))> : std::true_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType,
+         typename = void>
+struct is_compatible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type_impl <
+    BasicJsonType, CompatibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, CompatibleObjectType>::value&&
+    is_detected<key_type_t, CompatibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    // macOS's is_constructible does not play well with nonesuch...
+    static constexpr bool value =
+        is_constructible<typename object_t::key_type,
+        typename CompatibleObjectType::key_type>::value &&
+        is_constructible<typename object_t::mapped_type,
+        typename CompatibleObjectType::mapped_type>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type
+    : is_compatible_object_type_impl<BasicJsonType, CompatibleObjectType> {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         typename = void>
+struct is_constructible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type_impl <
+    BasicJsonType, ConstructibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, ConstructibleObjectType>::value&&
+    is_detected<key_type_t, ConstructibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    static constexpr bool value =
+        (is_default_constructible<ConstructibleObjectType>::value &&
+         (std::is_move_assignable<ConstructibleObjectType>::value ||
+          std::is_copy_assignable<ConstructibleObjectType>::value) &&
+         (is_constructible<typename ConstructibleObjectType::key_type,
+          typename object_t::key_type>::value &&
+          std::is_same <
+          typename object_t::mapped_type,
+          typename ConstructibleObjectType::mapped_type >::value)) ||
+        (has_from_json<BasicJsonType,
+         typename ConstructibleObjectType::mapped_type>::value ||
+         has_non_default_from_json <
+         BasicJsonType,
+         typename ConstructibleObjectType::mapped_type >::value);
+};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type
+    : is_constructible_object_type_impl<BasicJsonType,
+      ConstructibleObjectType> {};
+
+template<typename BasicJsonType, typename CompatibleStringType>
+struct is_compatible_string_type
+{
+    static constexpr auto value =
+        is_constructible<typename BasicJsonType::string_t, CompatibleStringType>::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleStringType>
+struct is_constructible_string_type
+{
+    static constexpr auto value =
+        is_constructible<ConstructibleStringType,
+        typename BasicJsonType::string_t>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType, typename = void>
+struct is_compatible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type_impl <
+    BasicJsonType, CompatibleArrayType,
+    enable_if_t <
+    is_detected<iterator_t, CompatibleArrayType>::value&&
+    is_iterator_traits<iterator_traits<detected_t<iterator_t, CompatibleArrayType>>>::value&&
+// special case for types like std::filesystem::path whose iterator's value_type are themselves
+// c.f. https://github.com/nlohmann/json/pull/3073
+    !std::is_same<CompatibleArrayType, detected_t<range_value_t, CompatibleArrayType>>::value >>
+{
+    static constexpr bool value =
+        is_constructible<BasicJsonType,
+        range_value_t<CompatibleArrayType>>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type
+    : is_compatible_array_type_impl<BasicJsonType, CompatibleArrayType> {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType, typename = void>
+struct is_constructible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t<std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value >>
+            : std::true_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t < !std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value&&
+    !is_compatible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+    is_default_constructible<ConstructibleArrayType>::value&&
+(std::is_move_assignable<ConstructibleArrayType>::value ||
+ std::is_copy_assignable<ConstructibleArrayType>::value)&&
+is_detected<iterator_t, ConstructibleArrayType>::value&&
+is_iterator_traits<iterator_traits<detected_t<iterator_t, ConstructibleArrayType>>>::value&&
+is_detected<range_value_t, ConstructibleArrayType>::value&&
+// special case for types like std::filesystem::path whose iterator's value_type are themselves
+// c.f. https://github.com/nlohmann/json/pull/3073
+!std::is_same<ConstructibleArrayType, detected_t<range_value_t, ConstructibleArrayType>>::value&&
+        is_complete_type <
+        detected_t<range_value_t, ConstructibleArrayType >>::value >>
+{
+    using value_type = range_value_t<ConstructibleArrayType>;
+
+    static constexpr bool value =
+        std::is_same<value_type,
+        typename BasicJsonType::array_t::value_type>::value ||
+        has_from_json<BasicJsonType,
+        value_type>::value ||
+        has_non_default_from_json <
+        BasicJsonType,
+        value_type >::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type
+    : is_constructible_array_type_impl<BasicJsonType, ConstructibleArrayType> {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType,
+         typename = void>
+struct is_compatible_integer_type_impl : std::false_type {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type_impl <
+    RealIntegerType, CompatibleNumberIntegerType,
+    enable_if_t < std::is_integral<RealIntegerType>::value&&
+    std::is_integral<CompatibleNumberIntegerType>::value&&
+    !std::is_same<bool, CompatibleNumberIntegerType>::value >>
+{
+    // is there an assert somewhere on overflows?
+    using RealLimits = std::numeric_limits<RealIntegerType>;
+    using CompatibleLimits = std::numeric_limits<CompatibleNumberIntegerType>;
+
+    static constexpr auto value =
+        is_constructible<RealIntegerType,
+        CompatibleNumberIntegerType>::value &&
+        CompatibleLimits::is_integer &&
+        RealLimits::is_signed == CompatibleLimits::is_signed;
+};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type
+    : is_compatible_integer_type_impl<RealIntegerType,
+      CompatibleNumberIntegerType> {};
+
+template<typename BasicJsonType, typename CompatibleType, typename = void>
+struct is_compatible_type_impl: std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type_impl <
+    BasicJsonType, CompatibleType,
+    enable_if_t<is_complete_type<CompatibleType>::value >>
+{
+    static constexpr bool value =
+        has_to_json<BasicJsonType, CompatibleType>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type
+    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};
+
+template<typename T1, typename T2>
+struct is_constructible_tuple : std::false_type {};
+
+template<typename T1, typename... Args>
+struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
+
+// a naive helper to check if a type is an ordered_map (exploits the fact that
+// ordered_map inherits capacity() from std::vector)
+template <typename T>
+struct is_ordered_map
+{
+    using one = char;
+
+    struct two
+    {
+        char x[2]; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    };
+
+    template <typename C> static one test( decltype(&C::capacity) ) ;
+    template <typename C> static two test(...);
+
+    enum { value = sizeof(test<T>(nullptr)) == sizeof(char) }; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+};
+
+// to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
+template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
+T conditional_static_cast(U value)
+{
+    return static_cast<T>(value);
+}
+
+template<typename T, typename U, enable_if_t<std::is_same<T, U>::value, int> = 0>
+T conditional_static_cast(U value)
+{
+    return value;
+}
+
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+#if JSON_HAS_EXPERIMENTAL_FILESYSTEM
+#include <experimental/filesystem>
+namespace nlohmann::detail
+{
+namespace std_fs = std::experimental::filesystem;
+} // namespace nlohmann::detail
+#elif JSON_HAS_FILESYSTEM
+#include <filesystem>
+namespace nlohmann::detail
+{
+namespace std_fs = std::filesystem;
+} // namespace nlohmann::detail
+#endif
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_null()))
+    {
+        JSON_THROW(type_error::create(302, "type must be null, but is " + std::string(j.type_name()), j));
+    }
+    n = nullptr;
+}
+
+// overloads for basic_json template parameters
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t < std::is_arithmetic<ArithmeticType>::value&&
+                         !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+                         int > = 0 >
+void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+
+        case value_t::null:
+        case value_t::object:
+        case value_t::array:
+        case value_t::string:
+        case value_t::boolean:
+        case value_t::binary:
+        case value_t::discarded:
+        default:
+            JSON_THROW(type_error::create(302, "type must be number, but is " + std::string(j.type_name()), j));
+    }
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::boolean_t& b)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_boolean()))
+    {
+        JSON_THROW(type_error::create(302, "type must be boolean, but is " + std::string(j.type_name()), j));
+    }
+    b = *j.template get_ptr<const typename BasicJsonType::boolean_t*>();
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::string_t& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, "type must be string, but is " + std::string(j.type_name()), j));
+    }
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template <
+    typename BasicJsonType, typename ConstructibleStringType,
+    enable_if_t <
+        is_constructible_string_type<BasicJsonType, ConstructibleStringType>::value&&
+        !std::is_same<typename BasicJsonType::string_t,
+                      ConstructibleStringType>::value,
+        int > = 0 >
+void from_json(const BasicJsonType& j, ConstructibleStringType& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, "type must be string, but is " + std::string(j.type_name()), j));
+    }
+
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::number_float_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::number_unsigned_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::number_integer_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+void from_json(const BasicJsonType& j, EnumType& e)
+{
+    typename std::underlying_type<EnumType>::type val;
+    get_arithmetic_value(j, val);
+    e = static_cast<EnumType>(val);
+}
+
+// forward_list doesn't have an insert method
+template<typename BasicJsonType, typename T, typename Allocator,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name()), j));
+    }
+    l.clear();
+    std::transform(j.rbegin(), j.rend(),
+                   std::front_inserter(l), [](const BasicJsonType & i)
+    {
+        return i.template get<T>();
+    });
+}
+
+// valarray doesn't have an insert method
+template<typename BasicJsonType, typename T,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+void from_json(const BasicJsonType& j, std::valarray<T>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name()), j));
+    }
+    l.resize(j.size());
+    std::transform(j.begin(), j.end(), std::begin(l),
+                   [](const BasicJsonType & elem)
+    {
+        return elem.template get<T>();
+    });
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json(const BasicJsonType& j, T (&arr)[N])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType>
+void from_json_array_impl(const BasicJsonType& j, typename BasicJsonType::array_t& arr, priority_tag<3> /*unused*/)
+{
+    arr = *j.template get_ptr<const typename BasicJsonType::array_t*>();
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr,
+                          priority_tag<2> /*unused*/)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType,
+         enable_if_t<
+             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+             int> = 0>
+auto from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, priority_tag<1> /*unused*/)
+-> decltype(
+    arr.reserve(std::declval<typename ConstructibleArrayType::size_type>()),
+    j.template get<typename ConstructibleArrayType::value_type>(),
+    void())
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    ret.reserve(j.size());
+    std::transform(j.begin(), j.end(),
+                   std::inserter(ret, end(ret)), [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType,
+         enable_if_t<
+             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+             int> = 0>
+void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr,
+                          priority_tag<0> /*unused*/)
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    std::transform(
+        j.begin(), j.end(), std::inserter(ret, end(ret)),
+        [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template < typename BasicJsonType, typename ConstructibleArrayType,
+           enable_if_t <
+               is_constructible_array_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_object_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !std::is_same<ConstructibleArrayType, typename BasicJsonType::binary_t>::value&&
+               !is_basic_json<ConstructibleArrayType>::value,
+               int > = 0 >
+auto from_json(const BasicJsonType& j, ConstructibleArrayType& arr)
+-> decltype(from_json_array_impl(j, arr, priority_tag<3> {}),
+j.template get<typename ConstructibleArrayType::value_type>(),
+void())
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name()), j));
+    }
+
+    from_json_array_impl(j, arr, priority_tag<3> {});
+}
+
+template < typename BasicJsonType, typename T, std::size_t... Idx >
+std::array<T, sizeof...(Idx)> from_json_inplace_array_impl(BasicJsonType&& j,
+        identity_tag<std::array<T, sizeof...(Idx)>> /*unused*/, index_sequence<Idx...> /*unused*/)
+{
+    return { { std::forward<BasicJsonType>(j).at(Idx).template get<T>()... } };
+}
+
+template < typename BasicJsonType, typename T, std::size_t N >
+auto from_json(BasicJsonType&& j, identity_tag<std::array<T, N>> tag)
+-> decltype(from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {}))
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name()), j));
+    }
+
+    return from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {});
+}
+
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, typename BasicJsonType::binary_t& bin)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_binary()))
+    {
+        JSON_THROW(type_error::create(302, "type must be binary, but is " + std::string(j.type_name()), j));
+    }
+
+    bin = *j.template get_ptr<const typename BasicJsonType::binary_t*>();
+}
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         enable_if_t<is_constructible_object_type<BasicJsonType, ConstructibleObjectType>::value, int> = 0>
+void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
+    {
+        JSON_THROW(type_error::create(302, "type must be object, but is " + std::string(j.type_name()), j));
+    }
+
+    ConstructibleObjectType ret;
+    const auto* inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
+    using value_type = typename ConstructibleObjectType::value_type;
+    std::transform(
+        inner_object->begin(), inner_object->end(),
+        std::inserter(ret, ret.begin()),
+        [](typename BasicJsonType::object_t::value_type const & p)
+    {
+        return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
+    });
+    obj = std::move(ret);
+}
+
+// overload for arithmetic types, not chosen for basic_json template arguments
+// (BooleanType, etc..); note: Is it really necessary to provide explicit
+// overloads for boolean_t etc. in case of a custom BooleanType which is not
+// an arithmetic type?
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t <
+               std::is_arithmetic<ArithmeticType>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_unsigned_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_integer_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_float_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+               int > = 0 >
+void from_json(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+        case value_t::boolean:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::boolean_t*>());
+            break;
+        }
+
+        case value_t::null:
+        case value_t::object:
+        case value_t::array:
+        case value_t::string:
+        case value_t::binary:
+        case value_t::discarded:
+        default:
+            JSON_THROW(type_error::create(302, "type must be number, but is " + std::string(j.type_name()), j));
+    }
+}
+
+template<typename BasicJsonType, typename... Args, std::size_t... Idx>
+std::tuple<Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+{
+    return std::make_tuple(std::forward<BasicJsonType>(j).at(Idx).template get<Args>()...);
+}
+
+template < typename BasicJsonType, class A1, class A2 >
+std::pair<A1, A2> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::pair<A1, A2>> /*unused*/, priority_tag<0> /*unused*/)
+{
+    return {std::forward<BasicJsonType>(j).at(0).template get<A1>(),
+            std::forward<BasicJsonType>(j).at(1).template get<A2>()};
+}
+
+template<typename BasicJsonType, typename A1, typename A2>
+void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priority_tag<1> /*unused*/)
+{
+    p = from_json_tuple_impl(std::forward<BasicJsonType>(j), identity_tag<std::pair<A1, A2>> {}, priority_tag<0> {});
+}
+
+template<typename BasicJsonType, typename... Args>
+std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
+{
+    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+}
+
+template<typename BasicJsonType, typename... Args>
+void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
+{
+    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+}
+
+template<typename BasicJsonType, typename TupleRelated>
+auto from_json(BasicJsonType&& j, TupleRelated&& t)
+-> decltype(from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {}))
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name()), j));
+    }
+
+    return from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {});
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Compare, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+void from_json(const BasicJsonType& j, std::map<Key, Value, Compare, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name()), j));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(p.type_name()), j));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Hash, typename KeyEqual, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+void from_json(const BasicJsonType& j, std::unordered_map<Key, Value, Hash, KeyEqual, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name()), j));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(p.type_name()), j));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+template<typename BasicJsonType>
+void from_json(const BasicJsonType& j, std_fs::path& p)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, "type must be string, but is " + std::string(j.type_name()), j));
+    }
+    p = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+#endif
+
+struct from_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(const BasicJsonType& j, T&& val) const
+    noexcept(noexcept(from_json(j, std::forward<T>(val))))
+    -> decltype(from_json(j, std::forward<T>(val)))
+    {
+        return from_json(j, std::forward<T>(val));
+    }
+};
+}  // namespace detail
+
+/// namespace to hold default `from_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+{
+constexpr const auto& from_json = detail::static_const<detail::from_json_fn>::value; // NOLINT(misc-definitions-in-headers)
+} // namespace
+} // namespace nlohmann
+
+// #include <nlohmann/detail/conversions/to_json.hpp>
+
+
+#include <algorithm> // copy
+#include <iterator> // begin, end
+#include <string> // string
+#include <tuple> // tuple, get
+#include <type_traits> // is_same, is_constructible, is_floating_point, is_enum, underlying_type
+#include <utility> // move, forward, declval, pair
+#include <valarray> // valarray
+#include <vector> // vector
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
+
+
+#include <cstddef> // size_t
+#include <iterator> // input_iterator_tag
+#include <string> // string, to_string
+#include <tuple> // tuple_size, get, tuple_element
+#include <utility> // move
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename string_type>
+void int_to_string( string_type& target, std::size_t value )
+{
+    // For ADL
+    using std::to_string;
+    target = to_string(value);
+}
+template<typename IteratorType> class iteration_proxy_value
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    using value_type = iteration_proxy_value;
+    using pointer = value_type * ;
+    using reference = value_type & ;
+    using iterator_category = std::input_iterator_tag;
+    using string_type = typename std::remove_cv< typename std::remove_reference<decltype( std::declval<IteratorType>().key() ) >::type >::type;
+
+  private:
+    /// the iterator
+    IteratorType anchor;
+    /// an index for arrays (used to create key names)
+    std::size_t array_index = 0;
+    /// last stringified array index
+    mutable std::size_t array_index_last = 0;
+    /// a string representation of the array index
+    mutable string_type array_index_str = "0";
+    /// an empty string (to return a reference for primitive values)
+    const string_type empty_str{};
+
+  public:
+    explicit iteration_proxy_value(IteratorType it) noexcept
+        : anchor(std::move(it))
+    {}
+
+    /// dereference operator (needed for range-based for)
+    iteration_proxy_value& operator*()
+    {
+        return *this;
+    }
+
+    /// increment operator (needed for range-based for)
+    iteration_proxy_value& operator++()
+    {
+        ++anchor;
+        ++array_index;
+
+        return *this;
+    }
+
+    /// equality operator (needed for InputIterator)
+    bool operator==(const iteration_proxy_value& o) const
+    {
+        return anchor == o.anchor;
+    }
+
+    /// inequality operator (needed for range-based for)
+    bool operator!=(const iteration_proxy_value& o) const
+    {
+        return anchor != o.anchor;
+    }
+
+    /// return key of the iterator
+    const string_type& key() const
+    {
+        JSON_ASSERT(anchor.m_object != nullptr);
+
+        switch (anchor.m_object->type())
+        {
+            // use integer array index as key
+            case value_t::array:
+            {
+                if (array_index != array_index_last)
+                {
+                    int_to_string( array_index_str, array_index );
+                    array_index_last = array_index;
+                }
+                return array_index_str;
+            }
+
+            // use key from the object
+            case value_t::object:
+                return anchor.key();
+
+            // use an empty key for all primitive types
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return empty_str;
+        }
+    }
+
+    /// return value of the iterator
+    typename IteratorType::reference value() const
+    {
+        return anchor.value();
+    }
+};
+
+/// proxy class for the items() function
+template<typename IteratorType> class iteration_proxy
+{
+  private:
+    /// the container to iterate
+    typename IteratorType::reference container;
+
+  public:
+    /// construct iteration proxy from a container
+    explicit iteration_proxy(typename IteratorType::reference cont) noexcept
+        : container(cont) {}
+
+    /// return iterator begin (needed for range-based for)
+    iteration_proxy_value<IteratorType> begin() noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container.begin());
+    }
+
+    /// return iterator end (needed for range-based for)
+    iteration_proxy_value<IteratorType> end() noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container.end());
+    }
+};
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 0, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
+{
+    return i.key();
+}
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 1, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.value())
+{
+    return i.value();
+}
+}  // namespace detail
+}  // namespace nlohmann
+
+// The Addition to the STD Namespace is required to add
+// Structured Bindings Support to the iteration_proxy_value class
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+namespace std
+{
+#if defined(__clang__)
+    // Fix: https://github.com/nlohmann/json/issues/1401
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wmismatched-tags"
+#endif
+template<typename IteratorType>
+class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>>
+            : public std::integral_constant<std::size_t, 2> {};
+
+template<std::size_t N, typename IteratorType>
+class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >>
+{
+  public:
+    using type = decltype(
+                     get<N>(std::declval <
+                            ::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
+};
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+} // namespace std
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+#if JSON_HAS_EXPERIMENTAL_FILESYSTEM
+#include <experimental/filesystem>
+namespace nlohmann::detail
+{
+namespace std_fs = std::experimental::filesystem;
+} // namespace nlohmann::detail
+#elif JSON_HAS_FILESYSTEM
+#include <filesystem>
+namespace nlohmann::detail
+{
+namespace std_fs = std::filesystem;
+} // namespace nlohmann::detail
+#endif
+
+namespace nlohmann
+{
+namespace detail
+{
+//////////////////
+// constructors //
+//////////////////
+
+/*
+ * Note all external_constructor<>::construct functions need to call
+ * j.m_value.destroy(j.m_type) to avoid a memory leak in case j contains an
+ * allocated value (e.g., a string). See bug issue
+ * https://github.com/nlohmann/json/issues/2865 for more information.
+ */
+
+template<value_t> struct external_constructor;
+
+template<>
+struct external_constructor<value_t::boolean>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::boolean_t b) noexcept
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::boolean;
+        j.m_value = b;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::string>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::string_t& s)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::string;
+        j.m_value = s;
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::string;
+        j.m_value = std::move(s);
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleStringType,
+               enable_if_t < !std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleStringType& str)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::string;
+        j.m_value.string = j.template create<typename BasicJsonType::string_t>(str);
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::binary>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::binary_t& b)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::binary;
+        j.m_value = typename BasicJsonType::binary_t(b);
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::binary_t&& b)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::binary;
+        j.m_value = typename BasicJsonType::binary_t(std::move(b));
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_float>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_float_t val) noexcept
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::number_float;
+        j.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_unsigned>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_unsigned_t val) noexcept
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::number_unsigned;
+        j.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_integer>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_integer_t val) noexcept
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::number_integer;
+        j.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::array>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::array_t& arr)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::array;
+        j.m_value = arr;
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::array;
+        j.m_value = std::move(arr);
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleArrayType,
+               enable_if_t < !std::is_same<CompatibleArrayType, typename BasicJsonType::array_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleArrayType& arr)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::array;
+        j.m_value.array = j.template create<typename BasicJsonType::array_t>(begin(arr), end(arr));
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const std::vector<bool>& arr)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::array;
+        j.m_value = value_t::array;
+        j.m_value.array->reserve(arr.size());
+        for (const bool x : arr)
+        {
+            j.m_value.array->push_back(x);
+            j.set_parent(j.m_value.array->back());
+        }
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType, typename T,
+             enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+    static void construct(BasicJsonType& j, const std::valarray<T>& arr)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::array;
+        j.m_value = value_t::array;
+        j.m_value.array->resize(arr.size());
+        if (arr.size() > 0)
+        {
+            std::copy(std::begin(arr), std::end(arr), j.m_value.array->begin());
+        }
+        j.set_parents();
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::object>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::object_t& obj)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::object;
+        j.m_value = obj;
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+    {
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::object;
+        j.m_value = std::move(obj);
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleObjectType,
+               enable_if_t < !std::is_same<CompatibleObjectType, typename BasicJsonType::object_t>::value, int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleObjectType& obj)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_value.destroy(j.m_type);
+        j.m_type = value_t::object;
+        j.m_value.object = j.template create<typename BasicJsonType::object_t>(begin(obj), end(obj));
+        j.set_parents();
+        j.assert_invariant();
+    }
+};
+
+/////////////
+// to_json //
+/////////////
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, typename BasicJsonType::boolean_t>::value, int> = 0>
+void to_json(BasicJsonType& j, T b) noexcept
+{
+    external_constructor<value_t::boolean>::construct(j, b);
+}
+
+template<typename BasicJsonType, typename CompatibleString,
+         enable_if_t<std::is_constructible<typename BasicJsonType::string_t, CompatibleString>::value, int> = 0>
+void to_json(BasicJsonType& j, const CompatibleString& s)
+{
+    external_constructor<value_t::string>::construct(j, s);
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+{
+    external_constructor<value_t::string>::construct(j, std::move(s));
+}
+
+template<typename BasicJsonType, typename FloatType,
+         enable_if_t<std::is_floating_point<FloatType>::value, int> = 0>
+void to_json(BasicJsonType& j, FloatType val) noexcept
+{
+    external_constructor<value_t::number_float>::construct(j, static_cast<typename BasicJsonType::number_float_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberUnsignedType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_unsigned_t, CompatibleNumberUnsignedType>::value, int> = 0>
+void to_json(BasicJsonType& j, CompatibleNumberUnsignedType val) noexcept
+{
+    external_constructor<value_t::number_unsigned>::construct(j, static_cast<typename BasicJsonType::number_unsigned_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberIntegerType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_integer_t, CompatibleNumberIntegerType>::value, int> = 0>
+void to_json(BasicJsonType& j, CompatibleNumberIntegerType val) noexcept
+{
+    external_constructor<value_t::number_integer>::construct(j, static_cast<typename BasicJsonType::number_integer_t>(val));
+}
+
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+void to_json(BasicJsonType& j, EnumType e) noexcept
+{
+    using underlying_type = typename std::underlying_type<EnumType>::type;
+    external_constructor<value_t::number_integer>::construct(j, static_cast<underlying_type>(e));
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, const std::vector<bool>& e)
+{
+    external_constructor<value_t::array>::construct(j, e);
+}
+
+template < typename BasicJsonType, typename CompatibleArrayType,
+           enable_if_t < is_compatible_array_type<BasicJsonType,
+                         CompatibleArrayType>::value&&
+                         !is_compatible_object_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !is_compatible_string_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !std::is_same<typename BasicJsonType::binary_t, CompatibleArrayType>::value&&
+                         !is_basic_json<CompatibleArrayType>::value,
+                         int > = 0 >
+void to_json(BasicJsonType& j, const CompatibleArrayType& arr)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, const typename BasicJsonType::binary_t& bin)
+{
+    external_constructor<value_t::binary>::construct(j, bin);
+}
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+void to_json(BasicJsonType& j, const std::valarray<T>& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template < typename BasicJsonType, typename CompatibleObjectType,
+           enable_if_t < is_compatible_object_type<BasicJsonType, CompatibleObjectType>::value&& !is_basic_json<CompatibleObjectType>::value, int > = 0 >
+void to_json(BasicJsonType& j, const CompatibleObjectType& obj)
+{
+    external_constructor<value_t::object>::construct(j, obj);
+}
+
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+{
+    external_constructor<value_t::object>::construct(j, std::move(obj));
+}
+
+template <
+    typename BasicJsonType, typename T, std::size_t N,
+    enable_if_t < !std::is_constructible<typename BasicJsonType::string_t,
+                  const T(&)[N]>::value, // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                  int > = 0 >
+void to_json(BasicJsonType& j, const T(&arr)[N]) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template < typename BasicJsonType, typename T1, typename T2, enable_if_t < std::is_constructible<BasicJsonType, T1>::value&& std::is_constructible<BasicJsonType, T2>::value, int > = 0 >
+void to_json(BasicJsonType& j, const std::pair<T1, T2>& p)
+{
+    j = { p.first, p.second };
+}
+
+// for https://github.com/nlohmann/json/pull/1134
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
+void to_json(BasicJsonType& j, const T& b)
+{
+    j = { {b.key(), b.value()} };
+}
+
+template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
+void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<Idx...> /*unused*/)
+{
+    j = { std::get<Idx>(t)... };
+}
+
+template<typename BasicJsonType, typename T, enable_if_t<is_constructible_tuple<BasicJsonType, T>::value, int > = 0>
+void to_json(BasicJsonType& j, const T& t)
+{
+    to_json_tuple_impl(j, t, make_index_sequence<std::tuple_size<T>::value> {});
+}
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+template<typename BasicJsonType>
+void to_json(BasicJsonType& j, const std_fs::path& p)
+{
+    j = p.string();
+}
+#endif
+
+struct to_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(BasicJsonType& j, T&& val) const noexcept(noexcept(to_json(j, std::forward<T>(val))))
+    -> decltype(to_json(j, std::forward<T>(val)), void())
+    {
+        return to_json(j, std::forward<T>(val));
+    }
+};
+}  // namespace detail
+
+/// namespace to hold default `to_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+{
+constexpr const auto& to_json = detail::static_const<detail::to_json_fn>::value; // NOLINT(misc-definitions-in-headers)
+} // namespace
+} // namespace nlohmann
+
+// #include <nlohmann/detail/meta/identity_tag.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+namespace nlohmann
+{
+
+/// @sa https://json.nlohmann.me/api/adl_serializer/
+template<typename ValueType, typename>
+struct adl_serializer
+{
+    /// @brief convert a JSON value to any value type
+    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto from_json(BasicJsonType && j, TargetType& val) noexcept(
+        noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
+    {
+        ::nlohmann::from_json(std::forward<BasicJsonType>(j), val);
+    }
+
+    /// @brief convert a JSON value to any value type
+    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto from_json(BasicJsonType && j) noexcept(
+    noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {})))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {}))
+    {
+        return ::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {});
+    }
+
+    /// @brief convert any value type to a JSON value
+    /// @sa https://json.nlohmann.me/api/adl_serializer/to_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto to_json(BasicJsonType& j, TargetType && val) noexcept(
+        noexcept(::nlohmann::to_json(j, std::forward<TargetType>(val))))
+    -> decltype(::nlohmann::to_json(j, std::forward<TargetType>(val)), void())
+    {
+        ::nlohmann::to_json(j, std::forward<TargetType>(val));
+    }
+};
+}  // namespace nlohmann
+
+// #include <nlohmann/byte_container_with_subtype.hpp>
+
+
+#include <cstdint> // uint8_t, uint64_t
+#include <tuple> // tie
+#include <utility> // move
+
+namespace nlohmann
+{
+
+/// @brief an internal type for a backed binary type
+/// @sa https://json.nlohmann.me/api/byte_container_with_subtype/
+template<typename BinaryType>
+class byte_container_with_subtype : public BinaryType
+{
+  public:
+    using container_type = BinaryType;
+    using subtype_type = std::uint64_t;
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype() noexcept(noexcept(container_type()))
+        : container_type()
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(const container_type& b) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(container_type&& b) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(const container_type& b, subtype_type subtype_) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+        , m_subtype(subtype_)
+        , m_has_subtype(true)
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(container_type&& b, subtype_type subtype_) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+        , m_subtype(subtype_)
+        , m_has_subtype(true)
+    {}
+
+    bool operator==(const byte_container_with_subtype& rhs) const
+    {
+        return std::tie(static_cast<const BinaryType&>(*this), m_subtype, m_has_subtype) ==
+               std::tie(static_cast<const BinaryType&>(rhs), rhs.m_subtype, rhs.m_has_subtype);
+    }
+
+    bool operator!=(const byte_container_with_subtype& rhs) const
+    {
+        return !(rhs == *this);
+    }
+
+    /// @brief sets the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/set_subtype/
+    void set_subtype(subtype_type subtype_) noexcept
+    {
+        m_subtype = subtype_;
+        m_has_subtype = true;
+    }
+
+    /// @brief return the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/subtype/
+    constexpr subtype_type subtype() const noexcept
+    {
+        return m_has_subtype ? m_subtype : static_cast<subtype_type>(-1);
+    }
+
+    /// @brief return whether the value has a subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/has_subtype/
+    constexpr bool has_subtype() const noexcept
+    {
+        return m_has_subtype;
+    }
+
+    /// @brief clears the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/clear_subtype/
+    void clear_subtype() noexcept
+    {
+        m_subtype = 0;
+        m_has_subtype = false;
+    }
+
+  private:
+    subtype_type m_subtype = 0;
+    bool m_has_subtype = false;
+};
+
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/conversions/from_json.hpp>
+
+// #include <nlohmann/detail/conversions/to_json.hpp>
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/hash.hpp>
+
+
+#include <cstdint> // uint8_t
+#include <cstddef> // size_t
+#include <functional> // hash
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+
+// boost::hash_combine
+inline std::size_t combine(std::size_t seed, std::size_t h) noexcept
+{
+    seed ^= h + 0x9e3779b9 + (seed << 6U) + (seed >> 2U);
+    return seed;
+}
+
+/*!
+@brief hash a JSON value
+
+The hash function tries to rely on std::hash where possible. Furthermore, the
+type of the JSON value is taken into account to have different hash values for
+null, 0, 0U, and false, etc.
+
+@tparam BasicJsonType basic_json specialization
+@param j JSON value to hash
+@return hash value of j
+*/
+template<typename BasicJsonType>
+std::size_t hash(const BasicJsonType& j)
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+    const auto type = static_cast<std::size_t>(j.type());
+    switch (j.type())
+    {
+        case BasicJsonType::value_t::null:
+        case BasicJsonType::value_t::discarded:
+        {
+            return combine(type, 0);
+        }
+
+        case BasicJsonType::value_t::object:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j.items())
+            {
+                const auto h = std::hash<string_t> {}(element.key());
+                seed = combine(seed, h);
+                seed = combine(seed, hash(element.value()));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::array:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j)
+            {
+                seed = combine(seed, hash(element));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::string:
+        {
+            const auto h = std::hash<string_t> {}(j.template get_ref<const string_t&>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::boolean:
+        {
+            const auto h = std::hash<bool> {}(j.template get<bool>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_integer:
+        {
+            const auto h = std::hash<number_integer_t> {}(j.template get<number_integer_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_unsigned:
+        {
+            const auto h = std::hash<number_unsigned_t> {}(j.template get<number_unsigned_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_float:
+        {
+            const auto h = std::hash<number_float_t> {}(j.template get<number_float_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::binary:
+        {
+            auto seed = combine(type, j.get_binary().size());
+            const auto h = std::hash<bool> {}(j.get_binary().has_subtype());
+            seed = combine(seed, h);
+            seed = combine(seed, static_cast<std::size_t>(j.get_binary().subtype()));
+            for (const auto byte : j.get_binary())
+            {
+                seed = combine(seed, std::hash<std::uint8_t> {}(byte));
+            }
+            return seed;
+        }
+
+        default:                   // LCOV_EXCL_LINE
+            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            return 0;              // LCOV_EXCL_LINE
+    }
+}
+
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/input/binary_reader.hpp>
+
+
+#include <algorithm> // generate_n
+#include <array> // array
+#include <cmath> // ldexp
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstdio> // snprintf
+#include <cstring> // memcpy
+#include <iterator> // back_inserter
+#include <limits> // numeric_limits
+#include <string> // char_traits, string
+#include <utility> // make_pair, move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstring> // strlen
+#include <iterator> // begin, end, iterator_traits, random_access_iterator_tag, distance, next
+#include <memory> // shared_ptr, make_shared, addressof
+#include <numeric> // accumulate
+#include <string> // string, char_traits
+#include <type_traits> // enable_if, is_base_of, is_pointer, is_integral, remove_pointer
+#include <utility> // pair, declval
+
+#ifndef JSON_NO_IO
+    #include <cstdio>   // FILE *
+    #include <istream>  // istream
+#endif                  // JSON_NO_IO
+
+// #include <nlohmann/detail/iterators/iterator_traits.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+/// the supported input formats
+enum class input_format_t { json, cbor, msgpack, ubjson, bson };
+
+////////////////////
+// input adapters //
+////////////////////
+
+#ifndef JSON_NO_IO
+/*!
+Input adapter for stdio file access. This adapter read only 1 byte and do not use any
+ buffer. This adapter is a very low level adapter.
+*/
+class file_input_adapter
+{
+  public:
+    using char_type = char;
+
+    JSON_HEDLEY_NON_NULL(2)
+    explicit file_input_adapter(std::FILE* f) noexcept
+        : m_file(f)
+    {}
+
+    // make class move-only
+    file_input_adapter(const file_input_adapter&) = delete;
+    file_input_adapter(file_input_adapter&&) noexcept = default;
+    file_input_adapter& operator=(const file_input_adapter&) = delete;
+    file_input_adapter& operator=(file_input_adapter&&) = delete;
+    ~file_input_adapter() = default;
+
+    std::char_traits<char>::int_type get_character() noexcept
+    {
+        return std::fgetc(m_file);
+    }
+
+  private:
+    /// the file pointer to read from
+    std::FILE* m_file;
+};
+
+
+/*!
+Input adapter for a (caching) istream. Ignores a UFT Byte Order Mark at
+beginning of input. Does not support changing the underlying std::streambuf
+in mid-input. Maintains underlying std::istream and std::streambuf to support
+subsequent use of standard std::istream operations to process any input
+characters following those used in parsing the JSON input.  Clears the
+std::istream flags; any input errors (e.g., EOF) will be detected by the first
+subsequent call for input from the std::istream.
+*/
+class input_stream_adapter
+{
+  public:
+    using char_type = char;
+
+    ~input_stream_adapter()
+    {
+        // clear stream flags; we use underlying streambuf I/O, do not
+        // maintain ifstream flags, except eof
+        if (is != nullptr)
+        {
+            is->clear(is->rdstate() & std::ios::eofbit);
+        }
+    }
+
+    explicit input_stream_adapter(std::istream& i)
+        : is(&i), sb(i.rdbuf())
+    {}
+
+    // delete because of pointer members
+    input_stream_adapter(const input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&&) = delete;
+
+    input_stream_adapter(input_stream_adapter&& rhs) noexcept
+        : is(rhs.is), sb(rhs.sb)
+    {
+        rhs.is = nullptr;
+        rhs.sb = nullptr;
+    }
+
+    // std::istream/std::streambuf use std::char_traits<char>::to_int_type, to
+    // ensure that std::char_traits<char>::eof() and the character 0xFF do not
+    // end up as the same value, e.g. 0xFFFFFFFF.
+    std::char_traits<char>::int_type get_character()
+    {
+        auto res = sb->sbumpc();
+        // set eof manually, as we don't use the istream interface.
+        if (JSON_HEDLEY_UNLIKELY(res == std::char_traits<char>::eof()))
+        {
+            is->clear(is->rdstate() | std::ios::eofbit);
+        }
+        return res;
+    }
+
+  private:
+    /// the associated input stream
+    std::istream* is = nullptr;
+    std::streambuf* sb = nullptr;
+};
+#endif  // JSON_NO_IO
+
+// General-purpose iterator-based adapter. It might not be as fast as
+// theoretically possible for some containers, but it is extremely versatile.
+template<typename IteratorType>
+class iterator_input_adapter
+{
+  public:
+    using char_type = typename std::iterator_traits<IteratorType>::value_type;
+
+    iterator_input_adapter(IteratorType first, IteratorType last)
+        : current(std::move(first)), end(std::move(last))
+    {}
+
+    typename std::char_traits<char_type>::int_type get_character()
+    {
+        if (JSON_HEDLEY_LIKELY(current != end))
+        {
+            auto result = std::char_traits<char_type>::to_int_type(*current);
+            std::advance(current, 1);
+            return result;
+        }
+
+        return std::char_traits<char_type>::eof();
+    }
+
+  private:
+    IteratorType current;
+    IteratorType end;
+
+    template<typename BaseInputAdapter, size_t T>
+    friend struct wide_string_input_helper;
+
+    bool empty() const
+    {
+        return current == end;
+    }
+};
+
+
+template<typename BaseInputAdapter, size_t T>
+struct wide_string_input_helper;
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 4>
+{
+    // UTF-32
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-32 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u) & 0x1Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (wc <= 0xFFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u) & 0x0Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else if (wc <= 0x10FFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | ((static_cast<unsigned int>(wc) >> 18u) & 0x07u));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 12u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 4;
+            }
+            else
+            {
+                // unknown character
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+        }
+    }
+};
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 2>
+{
+    // UTF-16
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-16 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (0xD800 > wc || wc >= 0xE000)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else
+            {
+                if (JSON_HEDLEY_UNLIKELY(!input.empty()))
+                {
+                    const auto wc2 = static_cast<unsigned int>(input.get_character());
+                    const auto charcode = 0x10000u + (((static_cast<unsigned int>(wc) & 0x3FFu) << 10u) | (wc2 & 0x3FFu));
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | (charcode >> 18u));
+                    utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 12u) & 0x3Fu));
+                    utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 6u) & 0x3Fu));
+                    utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (charcode & 0x3Fu));
+                    utf8_bytes_filled = 4;
+                }
+                else
+                {
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                    utf8_bytes_filled = 1;
+                }
+            }
+        }
+    }
+};
+
+// Wraps another input adapter to convert wide character types into individual bytes.
+template<typename BaseInputAdapter, typename WideCharType>
+class wide_string_input_adapter
+{
+  public:
+    using char_type = char;
+
+    wide_string_input_adapter(BaseInputAdapter base)
+        : base_adapter(base) {}
+
+    typename std::char_traits<char>::int_type get_character() noexcept
+    {
+        // check if buffer needs to be filled
+        if (utf8_bytes_index == utf8_bytes_filled)
+        {
+            fill_buffer<sizeof(WideCharType)>();
+
+            JSON_ASSERT(utf8_bytes_filled > 0);
+            JSON_ASSERT(utf8_bytes_index == 0);
+        }
+
+        // use buffer
+        JSON_ASSERT(utf8_bytes_filled > 0);
+        JSON_ASSERT(utf8_bytes_index < utf8_bytes_filled);
+        return utf8_bytes[utf8_bytes_index++];
+    }
+
+  private:
+    BaseInputAdapter base_adapter;
+
+    template<size_t T>
+    void fill_buffer()
+    {
+        wide_string_input_helper<BaseInputAdapter, T>::fill_buffer(base_adapter, utf8_bytes, utf8_bytes_index, utf8_bytes_filled);
+    }
+
+    /// a buffer for UTF-8 bytes
+    std::array<std::char_traits<char>::int_type, 4> utf8_bytes = {{0, 0, 0, 0}};
+
+    /// index to the utf8_codes array for the next valid byte
+    std::size_t utf8_bytes_index = 0;
+    /// number of valid bytes in the utf8_codes array
+    std::size_t utf8_bytes_filled = 0;
+};
+
+
+template<typename IteratorType, typename Enable = void>
+struct iterator_input_adapter_factory
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using adapter_type = iterator_input_adapter<iterator_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(std::move(first), std::move(last));
+    }
+};
+
+template<typename T>
+struct is_iterator_of_multibyte
+{
+    using value_type = typename std::iterator_traits<T>::value_type;
+    enum
+    {
+        value = sizeof(value_type) > 1
+    };
+};
+
+template<typename IteratorType>
+struct iterator_input_adapter_factory<IteratorType, enable_if_t<is_iterator_of_multibyte<IteratorType>::value>>
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using base_adapter_type = iterator_input_adapter<iterator_type>;
+    using adapter_type = wide_string_input_adapter<base_adapter_type, char_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(base_adapter_type(std::move(first), std::move(last)));
+    }
+};
+
+// General purpose iterator-based input
+template<typename IteratorType>
+typename iterator_input_adapter_factory<IteratorType>::adapter_type input_adapter(IteratorType first, IteratorType last)
+{
+    using factory_type = iterator_input_adapter_factory<IteratorType>;
+    return factory_type::create(first, last);
+}
+
+// Convenience shorthand from container to iterator
+// Enables ADL on begin(container) and end(container)
+// Encloses the using declarations in namespace for not to leak them to outside scope
+
+namespace container_input_adapter_factory_impl
+{
+
+using std::begin;
+using std::end;
+
+template<typename ContainerType, typename Enable = void>
+struct container_input_adapter_factory {};
+
+template<typename ContainerType>
+struct container_input_adapter_factory< ContainerType,
+       void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))>>
+       {
+           using adapter_type = decltype(input_adapter(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>())));
+
+           static adapter_type create(const ContainerType& container)
+{
+    return input_adapter(begin(container), end(container));
+}
+       };
+
+} // namespace container_input_adapter_factory_impl
+
+template<typename ContainerType>
+typename container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::adapter_type input_adapter(const ContainerType& container)
+{
+    return container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::create(container);
+}
+
+#ifndef JSON_NO_IO
+// Special cases with fast paths
+inline file_input_adapter input_adapter(std::FILE* file)
+{
+    return file_input_adapter(file);
+}
+
+inline input_stream_adapter input_adapter(std::istream& stream)
+{
+    return input_stream_adapter(stream);
+}
+
+inline input_stream_adapter input_adapter(std::istream&& stream)
+{
+    return input_stream_adapter(stream);
+}
+#endif  // JSON_NO_IO
+
+using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));
+
+// Null-delimited strings, and the like.
+template < typename CharT,
+           typename std::enable_if <
+               std::is_pointer<CharT>::value&&
+               !std::is_array<CharT>::value&&
+               std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+               sizeof(typename std::remove_pointer<CharT>::type) == 1,
+               int >::type = 0 >
+contiguous_bytes_input_adapter input_adapter(CharT b)
+{
+    auto length = std::strlen(reinterpret_cast<const char*>(b));
+    const auto* ptr = reinterpret_cast<const char*>(b);
+    return input_adapter(ptr, ptr + length);
+}
+
+template<typename T, std::size_t N>
+auto input_adapter(T (&array)[N]) -> decltype(input_adapter(array, array + N)) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+{
+    return input_adapter(array, array + N);
+}
+
+// This class only handles inputs of input_buffer_adapter type.
+// It's required so that expressions like {ptr, len} can be implicitly cast
+// to the correct adapter.
+class span_input_adapter
+{
+  public:
+    template < typename CharT,
+               typename std::enable_if <
+                   std::is_pointer<CharT>::value&&
+                   std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+                   sizeof(typename std::remove_pointer<CharT>::type) == 1,
+                   int >::type = 0 >
+    span_input_adapter(CharT b, std::size_t l)
+        : ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l) {}
+
+    template<class IteratorType,
+             typename std::enable_if<
+                 std::is_same<typename iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value,
+                 int>::type = 0>
+    span_input_adapter(IteratorType first, IteratorType last)
+        : ia(input_adapter(first, last)) {}
+
+    contiguous_bytes_input_adapter&& get()
+    {
+        return std::move(ia); // NOLINT(hicpp-move-const-arg,performance-move-const-arg)
+    }
+
+  private:
+    contiguous_bytes_input_adapter ia;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/input/json_sax.hpp>
+
+
+#include <cstddef>
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+
+/*!
+@brief SAX interface
+
+This class describes the SAX interface used by @ref nlohmann::json::sax_parse.
+Each function is called in different situations while the input is parsed. The
+boolean return value informs the parser whether to continue processing the
+input.
+*/
+template<typename BasicJsonType>
+struct json_sax
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    /*!
+    @brief a null value was read
+    @return whether parsing should proceed
+    */
+    virtual bool null() = 0;
+
+    /*!
+    @brief a boolean value was read
+    @param[in] val  boolean value
+    @return whether parsing should proceed
+    */
+    virtual bool boolean(bool val) = 0;
+
+    /*!
+    @brief an integer number was read
+    @param[in] val  integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_integer(number_integer_t val) = 0;
+
+    /*!
+    @brief an unsigned integer number was read
+    @param[in] val  unsigned integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_unsigned(number_unsigned_t val) = 0;
+
+    /*!
+    @brief a floating-point number was read
+    @param[in] val  floating-point value
+    @param[in] s    raw token value
+    @return whether parsing should proceed
+    */
+    virtual bool number_float(number_float_t val, const string_t& s) = 0;
+
+    /*!
+    @brief a string value was read
+    @param[in] val  string value
+    @return whether parsing should proceed
+    @note It is safe to move the passed string value.
+    */
+    virtual bool string(string_t& val) = 0;
+
+    /*!
+    @brief a binary value was read
+    @param[in] val  binary value
+    @return whether parsing should proceed
+    @note It is safe to move the passed binary value.
+    */
+    virtual bool binary(binary_t& val) = 0;
+
+    /*!
+    @brief the beginning of an object was read
+    @param[in] elements  number of object elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_object(std::size_t elements) = 0;
+
+    /*!
+    @brief an object key was read
+    @param[in] val  object key
+    @return whether parsing should proceed
+    @note It is safe to move the passed string.
+    */
+    virtual bool key(string_t& val) = 0;
+
+    /*!
+    @brief the end of an object was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_object() = 0;
+
+    /*!
+    @brief the beginning of an array was read
+    @param[in] elements  number of array elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_array(std::size_t elements) = 0;
+
+    /*!
+    @brief the end of an array was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_array() = 0;
+
+    /*!
+    @brief a parse error occurred
+    @param[in] position    the position in the input where the error occurs
+    @param[in] last_token  the last read token
+    @param[in] ex          an exception object describing the error
+    @return whether parsing should proceed (must return false)
+    */
+    virtual bool parse_error(std::size_t position,
+                             const std::string& last_token,
+                             const detail::exception& ex) = 0;
+
+    json_sax() = default;
+    json_sax(const json_sax&) = default;
+    json_sax(json_sax&&) noexcept = default;
+    json_sax& operator=(const json_sax&) = default;
+    json_sax& operator=(json_sax&&) noexcept = default;
+    virtual ~json_sax() = default;
+};
+
+
+namespace detail
+{
+/*!
+@brief SAX implementation to create a JSON value from SAX events
+
+This class implements the @ref json_sax interface and processes the SAX events
+to create a JSON value which makes it basically a DOM parser. The structure or
+hierarchy of the JSON value is managed by the stack `ref_stack` which contains
+a pointer to the respective array or object for each recursion depth.
+
+After successful parsing, the value that is passed by reference to the
+constructor contains the parsed value.
+
+@tparam BasicJsonType  the JSON type
+*/
+template<typename BasicJsonType>
+class json_sax_dom_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    /*!
+    @param[in,out] r  reference to a JSON value that is manipulated while
+                       parsing
+    @param[in] allow_exceptions_  whether parse errors yield exceptions
+    */
+    explicit json_sax_dom_parser(BasicJsonType& r, const bool allow_exceptions_ = true)
+        : root(r), allow_exceptions(allow_exceptions_)
+    {}
+
+    // make class move-only
+    json_sax_dom_parser(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser& operator=(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~json_sax_dom_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::object));
+
+        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, "excessive object size: " + std::to_string(len), *ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        // add null at given key and store the reference for later
+        object_element = &(ref_stack.back()->m_value.object->operator[](val));
+        return true;
+    }
+
+    bool end_object()
+    {
+        ref_stack.back()->set_parents();
+        ref_stack.pop_back();
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::array));
+
+        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, "excessive array size: " + std::to_string(len), *ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        ref_stack.back()->set_parents();
+        ref_stack.pop_back();
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+    /*!
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+    */
+    template<typename Value>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    BasicJsonType* handle_value(Value&& v)
+    {
+        if (ref_stack.empty())
+        {
+            root = BasicJsonType(std::forward<Value>(v));
+            return &root;
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_value.array->emplace_back(std::forward<Value>(v));
+            return &(ref_stack.back()->m_value.array->back());
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_object());
+        JSON_ASSERT(object_element);
+        *object_element = BasicJsonType(std::forward<Value>(v));
+        return object_element;
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+};
+
+template<typename BasicJsonType>
+class json_sax_dom_callback_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using parser_callback_t = typename BasicJsonType::parser_callback_t;
+    using parse_event_t = typename BasicJsonType::parse_event_t;
+
+    json_sax_dom_callback_parser(BasicJsonType& r,
+                                 const parser_callback_t cb,
+                                 const bool allow_exceptions_ = true)
+        : root(r), callback(cb), allow_exceptions(allow_exceptions_)
+    {
+        keep_stack.push_back(true);
+    }
+
+    // make class move-only
+    json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~json_sax_dom_callback_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        // check callback for object start
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::object_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::object, true);
+        ref_stack.push_back(val.second);
+
+        // check object limit
+        if (ref_stack.back() && JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, "excessive object size: " + std::to_string(len), *ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        BasicJsonType k = BasicJsonType(val);
+
+        // check callback for key
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::key, k);
+        key_keep_stack.push_back(keep);
+
+        // add discarded value at given key and store the reference for later
+        if (keep && ref_stack.back())
+        {
+            object_element = &(ref_stack.back()->m_value.object->operator[](val) = discarded);
+        }
+
+        return true;
+    }
+
+    bool end_object()
+    {
+        if (ref_stack.back())
+        {
+            if (!callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::object_end, *ref_stack.back()))
+            {
+                // discard object
+                *ref_stack.back() = discarded;
+            }
+            else
+            {
+                ref_stack.back()->set_parents();
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_structured())
+        {
+            // remove discarded value
+            for (auto it = ref_stack.back()->begin(); it != ref_stack.back()->end(); ++it)
+            {
+                if (it->is_discarded())
+                {
+                    ref_stack.back()->erase(it);
+                    break;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::array_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::array, true);
+        ref_stack.push_back(val.second);
+
+        // check array limit
+        if (ref_stack.back() && JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, "excessive array size: " + std::to_string(len), *ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        bool keep = true;
+
+        if (ref_stack.back())
+        {
+            keep = callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::array_end, *ref_stack.back());
+            if (keep)
+            {
+                ref_stack.back()->set_parents();
+            }
+            else
+            {
+                // discard array
+                *ref_stack.back() = discarded;
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        // remove discarded value
+        if (!keep && !ref_stack.empty() && ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_value.array->pop_back();
+        }
+
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+    /*!
+    @param[in] v  value to add to the JSON value we build during parsing
+    @param[in] skip_callback  whether we should skip calling the callback
+               function; this is required after start_array() and
+               start_object() SAX events, because otherwise we would call the
+               callback function with an empty array or object, respectively.
+
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+
+    @return pair of boolean (whether value should be kept) and pointer (to the
+            passed value in the ref_stack hierarchy; nullptr if not kept)
+    */
+    template<typename Value>
+    std::pair<bool, BasicJsonType*> handle_value(Value&& v, const bool skip_callback = false)
+    {
+        JSON_ASSERT(!keep_stack.empty());
+
+        // do not handle this value if we know it would be added to a discarded
+        // container
+        if (!keep_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // create value
+        auto value = BasicJsonType(std::forward<Value>(v));
+
+        // check callback
+        const bool keep = skip_callback || callback(static_cast<int>(ref_stack.size()), parse_event_t::value, value);
+
+        // do not handle this value if we just learnt it shall be discarded
+        if (!keep)
+        {
+            return {false, nullptr};
+        }
+
+        if (ref_stack.empty())
+        {
+            root = std::move(value);
+            return {true, &root};
+        }
+
+        // skip this value if we already decided to skip the parent
+        // (https://github.com/nlohmann/json/issues/971#issuecomment-413678360)
+        if (!ref_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // we now only expect arrays and objects
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        // array
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_value.array->emplace_back(std::move(value));
+            return {true, &(ref_stack.back()->m_value.array->back())};
+        }
+
+        // object
+        JSON_ASSERT(ref_stack.back()->is_object());
+        // check if we should store an element for the current key
+        JSON_ASSERT(!key_keep_stack.empty());
+        const bool store_element = key_keep_stack.back();
+        key_keep_stack.pop_back();
+
+        if (!store_element)
+        {
+            return {false, nullptr};
+        }
+
+        JSON_ASSERT(object_element);
+        *object_element = std::move(value);
+        return {true, object_element};
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// stack to manage which values to keep
+    std::vector<bool> keep_stack {};
+    /// stack to manage which object keys to keep
+    std::vector<bool> key_keep_stack {};
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// callback function
+    const parser_callback_t callback = nullptr;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+    /// a discarded value for the callback
+    BasicJsonType discarded = BasicJsonType::value_t::discarded;
+};
+
+template<typename BasicJsonType>
+class json_sax_acceptor
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    bool null()
+    {
+        return true;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_integer(number_integer_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_float(number_float_t /*unused*/, const string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool string(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool binary(binary_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool start_object(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
+    {
+        return true;
+    }
+
+    bool key(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool end_object()
+    {
+        return true;
+    }
+
+    bool start_array(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
+    {
+        return true;
+    }
+
+    bool end_array()
+    {
+        return true;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const detail::exception& /*unused*/)
+    {
+        return false;
+    }
+};
+}  // namespace detail
+
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+
+#include <array> // array
+#include <clocale> // localeconv
+#include <cstddef> // size_t
+#include <cstdio> // snprintf
+#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
+#include <initializer_list> // initializer_list
+#include <string> // char_traits, string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/position_t.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+///////////
+// lexer //
+///////////
+
+template<typename BasicJsonType>
+class lexer_base
+{
+  public:
+    /// token types for the parser
+    enum class token_type
+    {
+        uninitialized,    ///< indicating the scanner is uninitialized
+        literal_true,     ///< the `true` literal
+        literal_false,    ///< the `false` literal
+        literal_null,     ///< the `null` literal
+        value_string,     ///< a string -- use get_string() for actual value
+        value_unsigned,   ///< an unsigned integer -- use get_number_unsigned() for actual value
+        value_integer,    ///< a signed integer -- use get_number_integer() for actual value
+        value_float,      ///< an floating point number -- use get_number_float() for actual value
+        begin_array,      ///< the character for array begin `[`
+        begin_object,     ///< the character for object begin `{`
+        end_array,        ///< the character for array end `]`
+        end_object,       ///< the character for object end `}`
+        name_separator,   ///< the name separator `:`
+        value_separator,  ///< the value separator `,`
+        parse_error,      ///< indicating a parse error
+        end_of_input,     ///< indicating the end of the input buffer
+        literal_or_value  ///< a literal or the begin of a value (only for diagnostics)
+    };
+
+    /// return name of values of type token_type (only used for errors)
+    JSON_HEDLEY_RETURNS_NON_NULL
+    JSON_HEDLEY_CONST
+    static const char* token_type_name(const token_type t) noexcept
+    {
+        switch (t)
+        {
+            case token_type::uninitialized:
+                return "<uninitialized>";
+            case token_type::literal_true:
+                return "true literal";
+            case token_type::literal_false:
+                return "false literal";
+            case token_type::literal_null:
+                return "null literal";
+            case token_type::value_string:
+                return "string literal";
+            case token_type::value_unsigned:
+            case token_type::value_integer:
+            case token_type::value_float:
+                return "number literal";
+            case token_type::begin_array:
+                return "'['";
+            case token_type::begin_object:
+                return "'{'";
+            case token_type::end_array:
+                return "']'";
+            case token_type::end_object:
+                return "'}'";
+            case token_type::name_separator:
+                return "':'";
+            case token_type::value_separator:
+                return "','";
+            case token_type::parse_error:
+                return "<parse error>";
+            case token_type::end_of_input:
+                return "end of input";
+            case token_type::literal_or_value:
+                return "'[', '{', or a literal";
+            // LCOV_EXCL_START
+            default: // catch non-enum values
+                return "unknown token";
+                // LCOV_EXCL_STOP
+        }
+    }
+};
+/*!
+@brief lexical analysis
+
+This class organizes the lexical analysis during JSON deserialization.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class lexer : public lexer_base<BasicJsonType>
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename std::char_traits<char_type>::int_type;
+
+  public:
+    using token_type = typename lexer_base<BasicJsonType>::token_type;
+
+    explicit lexer(InputAdapterType&& adapter, bool ignore_comments_ = false) noexcept
+        : ia(std::move(adapter))
+        , ignore_comments(ignore_comments_)
+        , decimal_point_char(static_cast<char_int_type>(get_decimal_point()))
+    {}
+
+    // delete because of pointer members
+    lexer(const lexer&) = delete;
+    lexer(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    lexer& operator=(lexer&) = delete;
+    lexer& operator=(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~lexer() = default;
+
+  private:
+    /////////////////////
+    // locales
+    /////////////////////
+
+    /// return the locale-dependent decimal point
+    JSON_HEDLEY_PURE
+    static char get_decimal_point() noexcept
+    {
+        const auto* loc = localeconv();
+        JSON_ASSERT(loc != nullptr);
+        return (loc->decimal_point == nullptr) ? '.' : *(loc->decimal_point);
+    }
+
+    /////////////////////
+    // scan functions
+    /////////////////////
+
+    /*!
+    @brief get codepoint from 4 hex characters following `\u`
+
+    For input "\u c1 c2 c3 c4" the codepoint is:
+      (c1 * 0x1000) + (c2 * 0x0100) + (c3 * 0x0010) + c4
+    = (c1 << 12) + (c2 << 8) + (c3 << 4) + (c4 << 0)
+
+    Furthermore, the possible characters '0'..'9', 'A'..'F', and 'a'..'f'
+    must be converted to the integers 0x0..0x9, 0xA..0xF, 0xA..0xF, resp. The
+    conversion is done by subtracting the offset (0x30, 0x37, and 0x57)
+    between the ASCII value of the character and the desired integer value.
+
+    @return codepoint (0x0000..0xFFFF) or -1 in case of an error (e.g. EOF or
+            non-hex character)
+    */
+    int get_codepoint()
+    {
+        // this function only makes sense after reading `\u`
+        JSON_ASSERT(current == 'u');
+        int codepoint = 0;
+
+        const auto factors = { 12u, 8u, 4u, 0u };
+        for (const auto factor : factors)
+        {
+            get();
+
+            if (current >= '0' && current <= '9')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x30u) << factor);
+            }
+            else if (current >= 'A' && current <= 'F')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x37u) << factor);
+            }
+            else if (current >= 'a' && current <= 'f')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x57u) << factor);
+            }
+            else
+            {
+                return -1;
+            }
+        }
+
+        JSON_ASSERT(0x0000 <= codepoint && codepoint <= 0xFFFF);
+        return codepoint;
+    }
+
+    /*!
+    @brief check if the next byte(s) are inside a given range
+
+    Adds the current byte and, for each passed range, reads a new byte and
+    checks if it is inside the range. If a violation was detected, set up an
+    error message and return false. Otherwise, return true.
+
+    @param[in] ranges  list of integers; interpreted as list of pairs of
+                       inclusive lower and upper bound, respectively
+
+    @pre The passed list @a ranges must have 2, 4, or 6 elements; that is,
+         1, 2, or 3 pairs. This precondition is enforced by an assertion.
+
+    @return true if and only if no range violation was detected
+    */
+    bool next_byte_in_range(std::initializer_list<char_int_type> ranges)
+    {
+        JSON_ASSERT(ranges.size() == 2 || ranges.size() == 4 || ranges.size() == 6);
+        add(current);
+
+        for (auto range = ranges.begin(); range != ranges.end(); ++range)
+        {
+            get();
+            if (JSON_HEDLEY_LIKELY(*range <= current && current <= *(++range)))
+            {
+                add(current);
+            }
+            else
+            {
+                error_message = "invalid string: ill-formed UTF-8 byte";
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief scan a string literal
+
+    This function scans a string according to Sect. 7 of RFC 8259. While
+    scanning, bytes are escaped and copied into buffer token_buffer. Then the
+    function returns successfully, token_buffer is *not* null-terminated (as it
+    may contain \0 bytes), and token_buffer.size() is the number of bytes in the
+    string.
+
+    @return token_type::value_string if string could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note In case of errors, variable error_message contains a textual
+          description.
+    */
+    token_type scan_string()
+    {
+        // reset token_buffer (ignore opening quote)
+        reset();
+
+        // we entered the function by reading an open quote
+        JSON_ASSERT(current == '\"');
+
+        while (true)
+        {
+            // get next character
+            switch (get())
+            {
+                // end of file while parsing string
+                case std::char_traits<char_type>::eof():
+                {
+                    error_message = "invalid string: missing closing quote";
+                    return token_type::parse_error;
+                }
+
+                // closing quote
+                case '\"':
+                {
+                    return token_type::value_string;
+                }
+
+                // escapes
+                case '\\':
+                {
+                    switch (get())
+                    {
+                        // quotation mark
+                        case '\"':
+                            add('\"');
+                            break;
+                        // reverse solidus
+                        case '\\':
+                            add('\\');
+                            break;
+                        // solidus
+                        case '/':
+                            add('/');
+                            break;
+                        // backspace
+                        case 'b':
+                            add('\b');
+                            break;
+                        // form feed
+                        case 'f':
+                            add('\f');
+                            break;
+                        // line feed
+                        case 'n':
+                            add('\n');
+                            break;
+                        // carriage return
+                        case 'r':
+                            add('\r');
+                            break;
+                        // tab
+                        case 't':
+                            add('\t');
+                            break;
+
+                        // unicode escapes
+                        case 'u':
+                        {
+                            const int codepoint1 = get_codepoint();
+                            int codepoint = codepoint1; // start with codepoint1
+
+                            if (JSON_HEDLEY_UNLIKELY(codepoint1 == -1))
+                            {
+                                error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                return token_type::parse_error;
+                            }
+
+                            // check if code point is a high surrogate
+                            if (0xD800 <= codepoint1 && codepoint1 <= 0xDBFF)
+                            {
+                                // expect next \uxxxx entry
+                                if (JSON_HEDLEY_LIKELY(get() == '\\' && get() == 'u'))
+                                {
+                                    const int codepoint2 = get_codepoint();
+
+                                    if (JSON_HEDLEY_UNLIKELY(codepoint2 == -1))
+                                    {
+                                        error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                        return token_type::parse_error;
+                                    }
+
+                                    // check if codepoint2 is a low surrogate
+                                    if (JSON_HEDLEY_LIKELY(0xDC00 <= codepoint2 && codepoint2 <= 0xDFFF))
+                                    {
+                                        // overwrite codepoint
+                                        codepoint = static_cast<int>(
+                                                        // high surrogate occupies the most significant 22 bits
+                                                        (static_cast<unsigned int>(codepoint1) << 10u)
+                                                        // low surrogate occupies the least significant 15 bits
+                                                        + static_cast<unsigned int>(codepoint2)
+                                                        // there is still the 0xD800, 0xDC00 and 0x10000 noise
+                                                        // in the result, so we have to subtract with:
+                                                        // (0xD800 << 10) + DC00 - 0x10000 = 0x35FDC00
+                                                        - 0x35FDC00u);
+                                    }
+                                    else
+                                    {
+                                        error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                        return token_type::parse_error;
+                                    }
+                                }
+                                else
+                                {
+                                    error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+                            else
+                            {
+                                if (JSON_HEDLEY_UNLIKELY(0xDC00 <= codepoint1 && codepoint1 <= 0xDFFF))
+                                {
+                                    error_message = "invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+
+                            // result of the above calculation yields a proper codepoint
+                            JSON_ASSERT(0x00 <= codepoint && codepoint <= 0x10FFFF);
+
+                            // translate codepoint into bytes
+                            if (codepoint < 0x80)
+                            {
+                                // 1-byte characters: 0xxxxxxx (ASCII)
+                                add(static_cast<char_int_type>(codepoint));
+                            }
+                            else if (codepoint <= 0x7FF)
+                            {
+                                // 2-byte characters: 110xxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xC0u | (static_cast<unsigned int>(codepoint) >> 6u)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else if (codepoint <= 0xFFFF)
+                            {
+                                // 3-byte characters: 1110xxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xE0u | (static_cast<unsigned int>(codepoint) >> 12u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else
+                            {
+                                // 4-byte characters: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xF0u | (static_cast<unsigned int>(codepoint) >> 18u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 12u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+
+                            break;
+                        }
+
+                        // other characters after escape
+                        default:
+                            error_message = "invalid string: forbidden character after backslash";
+                            return token_type::parse_error;
+                    }
+
+                    break;
+                }
+
+                // invalid control characters
+                case 0x00:
+                {
+                    error_message = "invalid string: control character U+0000 (NUL) must be escaped to \\u0000";
+                    return token_type::parse_error;
+                }
+
+                case 0x01:
+                {
+                    error_message = "invalid string: control character U+0001 (SOH) must be escaped to \\u0001";
+                    return token_type::parse_error;
+                }
+
+                case 0x02:
+                {
+                    error_message = "invalid string: control character U+0002 (STX) must be escaped to \\u0002";
+                    return token_type::parse_error;
+                }
+
+                case 0x03:
+                {
+                    error_message = "invalid string: control character U+0003 (ETX) must be escaped to \\u0003";
+                    return token_type::parse_error;
+                }
+
+                case 0x04:
+                {
+                    error_message = "invalid string: control character U+0004 (EOT) must be escaped to \\u0004";
+                    return token_type::parse_error;
+                }
+
+                case 0x05:
+                {
+                    error_message = "invalid string: control character U+0005 (ENQ) must be escaped to \\u0005";
+                    return token_type::parse_error;
+                }
+
+                case 0x06:
+                {
+                    error_message = "invalid string: control character U+0006 (ACK) must be escaped to \\u0006";
+                    return token_type::parse_error;
+                }
+
+                case 0x07:
+                {
+                    error_message = "invalid string: control character U+0007 (BEL) must be escaped to \\u0007";
+                    return token_type::parse_error;
+                }
+
+                case 0x08:
+                {
+                    error_message = "invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b";
+                    return token_type::parse_error;
+                }
+
+                case 0x09:
+                {
+                    error_message = "invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t";
+                    return token_type::parse_error;
+                }
+
+                case 0x0A:
+                {
+                    error_message = "invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n";
+                    return token_type::parse_error;
+                }
+
+                case 0x0B:
+                {
+                    error_message = "invalid string: control character U+000B (VT) must be escaped to \\u000B";
+                    return token_type::parse_error;
+                }
+
+                case 0x0C:
+                {
+                    error_message = "invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f";
+                    return token_type::parse_error;
+                }
+
+                case 0x0D:
+                {
+                    error_message = "invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r";
+                    return token_type::parse_error;
+                }
+
+                case 0x0E:
+                {
+                    error_message = "invalid string: control character U+000E (SO) must be escaped to \\u000E";
+                    return token_type::parse_error;
+                }
+
+                case 0x0F:
+                {
+                    error_message = "invalid string: control character U+000F (SI) must be escaped to \\u000F";
+                    return token_type::parse_error;
+                }
+
+                case 0x10:
+                {
+                    error_message = "invalid string: control character U+0010 (DLE) must be escaped to \\u0010";
+                    return token_type::parse_error;
+                }
+
+                case 0x11:
+                {
+                    error_message = "invalid string: control character U+0011 (DC1) must be escaped to \\u0011";
+                    return token_type::parse_error;
+                }
+
+                case 0x12:
+                {
+                    error_message = "invalid string: control character U+0012 (DC2) must be escaped to \\u0012";
+                    return token_type::parse_error;
+                }
+
+                case 0x13:
+                {
+                    error_message = "invalid string: control character U+0013 (DC3) must be escaped to \\u0013";
+                    return token_type::parse_error;
+                }
+
+                case 0x14:
+                {
+                    error_message = "invalid string: control character U+0014 (DC4) must be escaped to \\u0014";
+                    return token_type::parse_error;
+                }
+
+                case 0x15:
+                {
+                    error_message = "invalid string: control character U+0015 (NAK) must be escaped to \\u0015";
+                    return token_type::parse_error;
+                }
+
+                case 0x16:
+                {
+                    error_message = "invalid string: control character U+0016 (SYN) must be escaped to \\u0016";
+                    return token_type::parse_error;
+                }
+
+                case 0x17:
+                {
+                    error_message = "invalid string: control character U+0017 (ETB) must be escaped to \\u0017";
+                    return token_type::parse_error;
+                }
+
+                case 0x18:
+                {
+                    error_message = "invalid string: control character U+0018 (CAN) must be escaped to \\u0018";
+                    return token_type::parse_error;
+                }
+
+                case 0x19:
+                {
+                    error_message = "invalid string: control character U+0019 (EM) must be escaped to \\u0019";
+                    return token_type::parse_error;
+                }
+
+                case 0x1A:
+                {
+                    error_message = "invalid string: control character U+001A (SUB) must be escaped to \\u001A";
+                    return token_type::parse_error;
+                }
+
+                case 0x1B:
+                {
+                    error_message = "invalid string: control character U+001B (ESC) must be escaped to \\u001B";
+                    return token_type::parse_error;
+                }
+
+                case 0x1C:
+                {
+                    error_message = "invalid string: control character U+001C (FS) must be escaped to \\u001C";
+                    return token_type::parse_error;
+                }
+
+                case 0x1D:
+                {
+                    error_message = "invalid string: control character U+001D (GS) must be escaped to \\u001D";
+                    return token_type::parse_error;
+                }
+
+                case 0x1E:
+                {
+                    error_message = "invalid string: control character U+001E (RS) must be escaped to \\u001E";
+                    return token_type::parse_error;
+                }
+
+                case 0x1F:
+                {
+                    error_message = "invalid string: control character U+001F (US) must be escaped to \\u001F";
+                    return token_type::parse_error;
+                }
+
+                // U+0020..U+007F (except U+0022 (quote) and U+005C (backspace))
+                case 0x20:
+                case 0x21:
+                case 0x23:
+                case 0x24:
+                case 0x25:
+                case 0x26:
+                case 0x27:
+                case 0x28:
+                case 0x29:
+                case 0x2A:
+                case 0x2B:
+                case 0x2C:
+                case 0x2D:
+                case 0x2E:
+                case 0x2F:
+                case 0x30:
+                case 0x31:
+                case 0x32:
+                case 0x33:
+                case 0x34:
+                case 0x35:
+                case 0x36:
+                case 0x37:
+                case 0x38:
+                case 0x39:
+                case 0x3A:
+                case 0x3B:
+                case 0x3C:
+                case 0x3D:
+                case 0x3E:
+                case 0x3F:
+                case 0x40:
+                case 0x41:
+                case 0x42:
+                case 0x43:
+                case 0x44:
+                case 0x45:
+                case 0x46:
+                case 0x47:
+                case 0x48:
+                case 0x49:
+                case 0x4A:
+                case 0x4B:
+                case 0x4C:
+                case 0x4D:
+                case 0x4E:
+                case 0x4F:
+                case 0x50:
+                case 0x51:
+                case 0x52:
+                case 0x53:
+                case 0x54:
+                case 0x55:
+                case 0x56:
+                case 0x57:
+                case 0x58:
+                case 0x59:
+                case 0x5A:
+                case 0x5B:
+                case 0x5D:
+                case 0x5E:
+                case 0x5F:
+                case 0x60:
+                case 0x61:
+                case 0x62:
+                case 0x63:
+                case 0x64:
+                case 0x65:
+                case 0x66:
+                case 0x67:
+                case 0x68:
+                case 0x69:
+                case 0x6A:
+                case 0x6B:
+                case 0x6C:
+                case 0x6D:
+                case 0x6E:
+                case 0x6F:
+                case 0x70:
+                case 0x71:
+                case 0x72:
+                case 0x73:
+                case 0x74:
+                case 0x75:
+                case 0x76:
+                case 0x77:
+                case 0x78:
+                case 0x79:
+                case 0x7A:
+                case 0x7B:
+                case 0x7C:
+                case 0x7D:
+                case 0x7E:
+                case 0x7F:
+                {
+                    add(current);
+                    break;
+                }
+
+                // U+0080..U+07FF: bytes C2..DF 80..BF
+                case 0xC2:
+                case 0xC3:
+                case 0xC4:
+                case 0xC5:
+                case 0xC6:
+                case 0xC7:
+                case 0xC8:
+                case 0xC9:
+                case 0xCA:
+                case 0xCB:
+                case 0xCC:
+                case 0xCD:
+                case 0xCE:
+                case 0xCF:
+                case 0xD0:
+                case 0xD1:
+                case 0xD2:
+                case 0xD3:
+                case 0xD4:
+                case 0xD5:
+                case 0xD6:
+                case 0xD7:
+                case 0xD8:
+                case 0xD9:
+                case 0xDA:
+                case 0xDB:
+                case 0xDC:
+                case 0xDD:
+                case 0xDE:
+                case 0xDF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({0x80, 0xBF})))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+0800..U+0FFF: bytes E0 A0..BF 80..BF
+                case 0xE0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0xA0, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+1000..U+CFFF: bytes E1..EC 80..BF 80..BF
+                // U+E000..U+FFFF: bytes EE..EF 80..BF 80..BF
+                case 0xE1:
+                case 0xE2:
+                case 0xE3:
+                case 0xE4:
+                case 0xE5:
+                case 0xE6:
+                case 0xE7:
+                case 0xE8:
+                case 0xE9:
+                case 0xEA:
+                case 0xEB:
+                case 0xEC:
+                case 0xEE:
+                case 0xEF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+D000..U+D7FF: bytes ED 80..9F 80..BF
+                case 0xED:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x9F, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
+                case 0xF0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
+                case 0xF1:
+                case 0xF2:
+                case 0xF3:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
+                case 0xF4:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // remaining bytes (80..C1 and F5..FF) are ill-formed
+                default:
+                {
+                    error_message = "invalid string: ill-formed UTF-8 byte";
+                    return token_type::parse_error;
+                }
+            }
+        }
+    }
+
+    /*!
+     * @brief scan a comment
+     * @return whether comment could be scanned successfully
+     */
+    bool scan_comment()
+    {
+        switch (get())
+        {
+            // single-line comments skip input until a newline or EOF is read
+            case '/':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case '\n':
+                        case '\r':
+                        case std::char_traits<char_type>::eof():
+                        case '\0':
+                            return true;
+
+                        default:
+                            break;
+                    }
+                }
+            }
+
+            // multi-line comments skip input until */ is read
+            case '*':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case std::char_traits<char_type>::eof():
+                        case '\0':
+                        {
+                            error_message = "invalid comment; missing closing '*/'";
+                            return false;
+                        }
+
+                        case '*':
+                        {
+                            switch (get())
+                            {
+                                case '/':
+                                    return true;
+
+                                default:
+                                {
+                                    unget();
+                                    continue;
+                                }
+                            }
+                        }
+
+                        default:
+                            continue;
+                    }
+                }
+            }
+
+            // unexpected character after reading '/'
+            default:
+            {
+                error_message = "invalid comment; expecting '/' or '*' after '/'";
+                return false;
+            }
+        }
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(float& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtof(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtod(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(long double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtold(str, endptr);
+    }
+
+    /*!
+    @brief scan a number literal
+
+    This function scans a string according to Sect. 6 of RFC 8259.
+
+    The function is realized with a deterministic finite state machine derived
+    from the grammar described in RFC 8259. Starting in state "init", the
+    input is read and used to determined the next state. Only state "done"
+    accepts the number. State "error" is a trap state to model errors. In the
+    table below, "anything" means any character but the ones listed before.
+
+    state    | 0        | 1-9      | e E      | +       | -       | .        | anything
+    ---------|----------|----------|----------|---------|---------|----------|-----------
+    init     | zero     | any1     | [error]  | [error] | minus   | [error]  | [error]
+    minus    | zero     | any1     | [error]  | [error] | [error] | [error]  | [error]
+    zero     | done     | done     | exponent | done    | done    | decimal1 | done
+    any1     | any1     | any1     | exponent | done    | done    | decimal1 | done
+    decimal1 | decimal2 | decimal2 | [error]  | [error] | [error] | [error]  | [error]
+    decimal2 | decimal2 | decimal2 | exponent | done    | done    | done     | done
+    exponent | any2     | any2     | [error]  | sign    | sign    | [error]  | [error]
+    sign     | any2     | any2     | [error]  | [error] | [error] | [error]  | [error]
+    any2     | any2     | any2     | done     | done    | done    | done     | done
+
+    The state machine is realized with one label per state (prefixed with
+    "scan_number_") and `goto` statements between them. The state machine
+    contains cycles, but any cycle can be left when EOF is read. Therefore,
+    the function is guaranteed to terminate.
+
+    During scanning, the read bytes are stored in token_buffer. This string is
+    then converted to a signed integer, an unsigned integer, or a
+    floating-point number.
+
+    @return token_type::value_unsigned, token_type::value_integer, or
+            token_type::value_float if number could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note The scanner is independent of the current locale. Internally, the
+          locale's decimal point is used instead of `.` to work with the
+          locale-dependent converters.
+    */
+    token_type scan_number()  // lgtm [cpp/use-of-goto]
+    {
+        // reset token_buffer to store the number's bytes
+        reset();
+
+        // the type of the parsed number; initially set to unsigned; will be
+        // changed if minus sign, decimal point or exponent is read
+        token_type number_type = token_type::value_unsigned;
+
+        // state (init): we just found out we need to scan a number
+        switch (current)
+        {
+            case '-':
+            {
+                add(current);
+                goto scan_number_minus;
+            }
+
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            // all other characters are rejected outside scan_number()
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+scan_number_minus:
+        // state: we just parsed a leading minus sign
+        number_type = token_type::value_integer;
+        switch (get())
+        {
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '-'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_zero:
+        // state: we just parse a zero (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '.':
+            {
+                add(decimal_point_char);
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_any1:
+        // state: we just parsed a number 0-9 (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            case '.':
+            {
+                add(decimal_point_char);
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_decimal1:
+        // state: we just parsed a decimal point
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '.'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_decimal2:
+        // we just parsed at least one number after a decimal point
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_exponent:
+        // we just parsed an exponent
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '+':
+            case '-':
+            {
+                add(current);
+                goto scan_number_sign;
+            }
+
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message =
+                    "invalid number; expected '+', '-', or digit after exponent";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_sign:
+        // we just parsed an exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after exponent sign";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_any2:
+        // we just parsed a number after the exponent or exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_done:
+        // unget the character after the number (we only read it to know that
+        // we are done scanning a number)
+        unget();
+
+        char* endptr = nullptr; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        errno = 0;
+
+        // try to parse integers first and fall back to floats
+        if (number_type == token_type::value_unsigned)
+        {
+            const auto x = std::strtoull(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno == 0)
+            {
+                value_unsigned = static_cast<number_unsigned_t>(x);
+                if (value_unsigned == x)
+                {
+                    return token_type::value_unsigned;
+                }
+            }
+        }
+        else if (number_type == token_type::value_integer)
+        {
+            const auto x = std::strtoll(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno == 0)
+            {
+                value_integer = static_cast<number_integer_t>(x);
+                if (value_integer == x)
+                {
+                    return token_type::value_integer;
+                }
+            }
+        }
+
+        // this code is reached if we parse a floating-point number or if an
+        // integer conversion above failed
+        strtof(value_float, token_buffer.data(), &endptr);
+
+        // we checked the number format before
+        JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+        return token_type::value_float;
+    }
+
+    /*!
+    @param[in] literal_text  the literal text to expect
+    @param[in] length        the length of the passed literal text
+    @param[in] return_type   the token type to return on success
+    */
+    JSON_HEDLEY_NON_NULL(2)
+    token_type scan_literal(const char_type* literal_text, const std::size_t length,
+                            token_type return_type)
+    {
+        JSON_ASSERT(std::char_traits<char_type>::to_char_type(current) == literal_text[0]);
+        for (std::size_t i = 1; i < length; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(std::char_traits<char_type>::to_char_type(get()) != literal_text[i]))
+            {
+                error_message = "invalid literal";
+                return token_type::parse_error;
+            }
+        }
+        return return_type;
+    }
+
+    /////////////////////
+    // input management
+    /////////////////////
+
+    /// reset token_buffer; current character is beginning of token
+    void reset() noexcept
+    {
+        token_buffer.clear();
+        token_string.clear();
+        token_string.push_back(std::char_traits<char_type>::to_char_type(current));
+    }
+
+    /*
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a
+    `std::char_traits<char>::eof()` in that case.  Stores the scanned characters
+    for use in error messages.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++position.chars_read_total;
+        ++position.chars_read_current_line;
+
+        if (next_unget)
+        {
+            // just reset the next_unget variable and work with current
+            next_unget = false;
+        }
+        else
+        {
+            current = ia.get_character();
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != std::char_traits<char_type>::eof()))
+        {
+            token_string.push_back(std::char_traits<char_type>::to_char_type(current));
+        }
+
+        if (current == '\n')
+        {
+            ++position.lines_read;
+            position.chars_read_current_line = 0;
+        }
+
+        return current;
+    }
+
+    /*!
+    @brief unget current character (read it again on next get)
+
+    We implement unget by setting variable next_unget to true. The input is not
+    changed - we just simulate ungetting by modifying chars_read_total,
+    chars_read_current_line, and token_string. The next call to get() will
+    behave as if the unget character is read again.
+    */
+    void unget()
+    {
+        next_unget = true;
+
+        --position.chars_read_total;
+
+        // in case we "unget" a newline, we have to also decrement the lines_read
+        if (position.chars_read_current_line == 0)
+        {
+            if (position.lines_read > 0)
+            {
+                --position.lines_read;
+            }
+        }
+        else
+        {
+            --position.chars_read_current_line;
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != std::char_traits<char_type>::eof()))
+        {
+            JSON_ASSERT(!token_string.empty());
+            token_string.pop_back();
+        }
+    }
+
+    /// add a character to token_buffer
+    void add(char_int_type c)
+    {
+        token_buffer.push_back(static_cast<typename string_t::value_type>(c));
+    }
+
+  public:
+    /////////////////////
+    // value getters
+    /////////////////////
+
+    /// return integer value
+    constexpr number_integer_t get_number_integer() const noexcept
+    {
+        return value_integer;
+    }
+
+    /// return unsigned integer value
+    constexpr number_unsigned_t get_number_unsigned() const noexcept
+    {
+        return value_unsigned;
+    }
+
+    /// return floating-point value
+    constexpr number_float_t get_number_float() const noexcept
+    {
+        return value_float;
+    }
+
+    /// return current string value (implicitly resets the token; useful only once)
+    string_t& get_string()
+    {
+        return token_buffer;
+    }
+
+    /////////////////////
+    // diagnostics
+    /////////////////////
+
+    /// return position of last read token
+    constexpr position_t get_position() const noexcept
+    {
+        return position;
+    }
+
+    /// return the last read token (for errors only).  Will never contain EOF
+    /// (an arbitrary value that is not a valid char value, often -1), because
+    /// 255 may legitimately occur.  May contain NUL, which should be escaped.
+    std::string get_token_string() const
+    {
+        // escape control characters
+        std::string result;
+        for (const auto c : token_string)
+        {
+            if (static_cast<unsigned char>(c) <= '\x1F')
+            {
+                // escape control characters
+                std::array<char, 9> cs{{}};
+                static_cast<void>((std::snprintf)(cs.data(), cs.size(), "<U+%.4X>", static_cast<unsigned char>(c))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                result += cs.data();
+            }
+            else
+            {
+                // add character as is
+                result.push_back(static_cast<std::string::value_type>(c));
+            }
+        }
+
+        return result;
+    }
+
+    /// return syntax error message
+    JSON_HEDLEY_RETURNS_NON_NULL
+    constexpr const char* get_error_message() const noexcept
+    {
+        return error_message;
+    }
+
+    /////////////////////
+    // actual scanner
+    /////////////////////
+
+    /*!
+    @brief skip the UTF-8 byte order mark
+    @return true iff there is no BOM or the correct BOM has been skipped
+    */
+    bool skip_bom()
+    {
+        if (get() == 0xEF)
+        {
+            // check if we completely parse the BOM
+            return get() == 0xBB && get() == 0xBF;
+        }
+
+        // the first character is not the beginning of the BOM; unget it to
+        // process is later
+        unget();
+        return true;
+    }
+
+    void skip_whitespace()
+    {
+        do
+        {
+            get();
+        }
+        while (current == ' ' || current == '\t' || current == '\n' || current == '\r');
+    }
+
+    token_type scan()
+    {
+        // initially, skip the BOM
+        if (position.chars_read_total == 0 && !skip_bom())
+        {
+            error_message = "invalid BOM; must be 0xEF 0xBB 0xBF if given";
+            return token_type::parse_error;
+        }
+
+        // read next character and ignore whitespace
+        skip_whitespace();
+
+        // ignore comments
+        while (ignore_comments && current == '/')
+        {
+            if (!scan_comment())
+            {
+                return token_type::parse_error;
+            }
+
+            // skip following whitespace
+            skip_whitespace();
+        }
+
+        switch (current)
+        {
+            // structural characters
+            case '[':
+                return token_type::begin_array;
+            case ']':
+                return token_type::end_array;
+            case '{':
+                return token_type::begin_object;
+            case '}':
+                return token_type::end_object;
+            case ':':
+                return token_type::name_separator;
+            case ',':
+                return token_type::value_separator;
+
+            // literals
+            case 't':
+            {
+                std::array<char_type, 4> true_literal = {{static_cast<char_type>('t'), static_cast<char_type>('r'), static_cast<char_type>('u'), static_cast<char_type>('e')}};
+                return scan_literal(true_literal.data(), true_literal.size(), token_type::literal_true);
+            }
+            case 'f':
+            {
+                std::array<char_type, 5> false_literal = {{static_cast<char_type>('f'), static_cast<char_type>('a'), static_cast<char_type>('l'), static_cast<char_type>('s'), static_cast<char_type>('e')}};
+                return scan_literal(false_literal.data(), false_literal.size(), token_type::literal_false);
+            }
+            case 'n':
+            {
+                std::array<char_type, 4> null_literal = {{static_cast<char_type>('n'), static_cast<char_type>('u'), static_cast<char_type>('l'), static_cast<char_type>('l')}};
+                return scan_literal(null_literal.data(), null_literal.size(), token_type::literal_null);
+            }
+
+            // string
+            case '\"':
+                return scan_string();
+
+            // number
+            case '-':
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+                return scan_number();
+
+            // end of input (the null byte is needed when parsing from
+            // string literals)
+            case '\0':
+            case std::char_traits<char_type>::eof():
+                return token_type::end_of_input;
+
+            // error
+            default:
+                error_message = "invalid literal";
+                return token_type::parse_error;
+        }
+    }
+
+  private:
+    /// input adapter
+    InputAdapterType ia;
+
+    /// whether comments should be ignored (true) or signaled as errors (false)
+    const bool ignore_comments = false;
+
+    /// the current character
+    char_int_type current = std::char_traits<char_type>::eof();
+
+    /// whether the next get() call should just return current
+    bool next_unget = false;
+
+    /// the start position of the current token
+    position_t position {};
+
+    /// raw input token string (for error messages)
+    std::vector<char_type> token_string {};
+
+    /// buffer for variable-length tokens (numbers, strings)
+    string_t token_buffer {};
+
+    /// a description of occurred lexer errors
+    const char* error_message = "";
+
+    // number values
+    number_integer_t value_integer = 0;
+    number_unsigned_t value_unsigned = 0;
+    number_float_t value_float = 0;
+
+    /// the decimal point
+    const char_int_type decimal_point_char = '.';
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/is_sax.hpp>
+
+
+#include <cstdint> // size_t
+#include <utility> // declval
+#include <string> // string
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename T>
+using null_function_t = decltype(std::declval<T&>().null());
+
+template<typename T>
+using boolean_function_t =
+    decltype(std::declval<T&>().boolean(std::declval<bool>()));
+
+template<typename T, typename Integer>
+using number_integer_function_t =
+    decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
+
+template<typename T, typename Unsigned>
+using number_unsigned_function_t =
+    decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
+
+template<typename T, typename Float, typename String>
+using number_float_function_t = decltype(std::declval<T&>().number_float(
+                                    std::declval<Float>(), std::declval<const String&>()));
+
+template<typename T, typename String>
+using string_function_t =
+    decltype(std::declval<T&>().string(std::declval<String&>()));
+
+template<typename T, typename Binary>
+using binary_function_t =
+    decltype(std::declval<T&>().binary(std::declval<Binary&>()));
+
+template<typename T>
+using start_object_function_t =
+    decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
+
+template<typename T, typename String>
+using key_function_t =
+    decltype(std::declval<T&>().key(std::declval<String&>()));
+
+template<typename T>
+using end_object_function_t = decltype(std::declval<T&>().end_object());
+
+template<typename T>
+using start_array_function_t =
+    decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
+
+template<typename T>
+using end_array_function_t = decltype(std::declval<T&>().end_array());
+
+template<typename T, typename Exception>
+using parse_error_function_t = decltype(std::declval<T&>().parse_error(
+        std::declval<std::size_t>(), std::declval<const std::string&>(),
+        std::declval<const Exception&>()));
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static constexpr bool value =
+        is_detected_exact<bool, null_function_t, SAX>::value &&
+        is_detected_exact<bool, boolean_function_t, SAX>::value &&
+        is_detected_exact<bool, number_integer_function_t, SAX, number_integer_t>::value &&
+        is_detected_exact<bool, number_unsigned_function_t, SAX, number_unsigned_t>::value &&
+        is_detected_exact<bool, number_float_function_t, SAX, number_float_t, string_t>::value &&
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value &&
+        is_detected_exact<bool, start_object_function_t, SAX>::value &&
+        is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, end_object_function_t, SAX>::value &&
+        is_detected_exact<bool, start_array_function_t, SAX>::value &&
+        is_detected_exact<bool, end_array_function_t, SAX>::value &&
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
+};
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax_static_asserts
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static_assert(is_detected_exact<bool, null_function_t, SAX>::value,
+                  "Missing/invalid function: bool null()");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(
+        is_detected_exact<bool, number_integer_function_t, SAX,
+        number_integer_t>::value,
+        "Missing/invalid function: bool number_integer(number_integer_t)");
+    static_assert(
+        is_detected_exact<bool, number_unsigned_function_t, SAX,
+        number_unsigned_t>::value,
+        "Missing/invalid function: bool number_unsigned(number_unsigned_t)");
+    static_assert(is_detected_exact<bool, number_float_function_t, SAX,
+                  number_float_t, string_t>::value,
+                  "Missing/invalid function: bool number_float(number_float_t, const string_t&)");
+    static_assert(
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value,
+        "Missing/invalid function: bool string(string_t&)");
+    static_assert(
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value,
+        "Missing/invalid function: bool binary(binary_t&)");
+    static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_object(std::size_t)");
+    static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value,
+                  "Missing/invalid function: bool key(string_t&)");
+    static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_object()");
+    static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_array(std::size_t)");
+    static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_array()");
+    static_assert(
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
+        "Missing/invalid function: bool parse_error(std::size_t, const "
+        "std::string&, const exception&)");
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+
+/// how to treat CBOR tags
+enum class cbor_tag_handler_t
+{
+    error,   ///< throw a parse_error exception in case of a tag
+    ignore,  ///< ignore tags
+    store    ///< store tags as binary type
+};
+
+/*!
+@brief determine system byte order
+
+@return true if and only if system's byte order is little endian
+
+@note from https://stackoverflow.com/a/1001328/266378
+*/
+static inline bool little_endianness(int num = 1) noexcept
+{
+    return *reinterpret_cast<char*>(&num) == 1;
+}
+
+
+///////////////////
+// binary reader //
+///////////////////
+
+/*!
+@brief deserialization of CBOR, MessagePack, and UBJSON values
+*/
+template<typename BasicJsonType, typename InputAdapterType, typename SAX = json_sax_dom_parser<BasicJsonType>>
+class binary_reader
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using json_sax_t = SAX;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename std::char_traits<char_type>::int_type;
+
+  public:
+    /*!
+    @brief create a binary reader
+
+    @param[in] adapter  input adapter to read from
+    */
+    explicit binary_reader(InputAdapterType&& adapter) noexcept : ia(std::move(adapter))
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+    }
+
+    // make class move-only
+    binary_reader(const binary_reader&) = delete;
+    binary_reader(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    binary_reader& operator=(const binary_reader&) = delete;
+    binary_reader& operator=(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~binary_reader() = default;
+
+    /*!
+    @param[in] format  the binary format to parse
+    @param[in] sax_    a SAX event processor
+    @param[in] strict  whether to expect the input to be consumed completed
+    @param[in] tag_handler  how to treat CBOR tags
+
+    @return whether parsing was successful
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool sax_parse(const input_format_t format,
+                   json_sax_t* sax_,
+                   const bool strict = true,
+                   const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        sax = sax_;
+        bool result = false;
+
+        switch (format)
+        {
+            case input_format_t::bson:
+                result = parse_bson_internal();
+                break;
+
+            case input_format_t::cbor:
+                result = parse_cbor_internal(true, tag_handler);
+                break;
+
+            case input_format_t::msgpack:
+                result = parse_msgpack_internal();
+                break;
+
+            case input_format_t::ubjson:
+                result = parse_ubjson_internal();
+                break;
+
+            case input_format_t::json: // LCOV_EXCL_LINE
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+        // strict mode: next byte must be EOF
+        if (result && strict)
+        {
+            if (format == input_format_t::ubjson)
+            {
+                get_ignore_noop();
+            }
+            else
+            {
+                get();
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(current != std::char_traits<char_type>::eof()))
+            {
+                return sax->parse_error(chars_read, get_token_string(),
+                                        parse_error::create(110, chars_read, exception_message(format, "expected end of input; last byte: 0x" + get_token_string(), "value"), BasicJsonType()));
+            }
+        }
+
+        return result;
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @brief Reads in a BSON-object and passes it to the SAX-parser.
+    @return whether a valid BSON-value was passed to the SAX parser
+    */
+    bool parse_bson_internal()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/false)))
+        {
+            return false;
+        }
+
+        return sax->end_object();
+    }
+
+    /*!
+    @brief Parses a C-style string from the BSON input.
+    @param[in,out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @return `true` if the \x00-byte indicating the end of the string was
+             encountered before the EOF; false` indicates an unexpected EOF.
+    */
+    bool get_bson_cstr(string_t& result)
+    {
+        auto out = std::back_inserter(result);
+        while (true)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "cstring")))
+            {
+                return false;
+            }
+            if (current == 0x00)
+            {
+                return true;
+            }
+            *out++ = static_cast<typename string_t::value_type>(current);
+        }
+    }
+
+    /*!
+    @brief Parses a zero-terminated string of length @a len from the BSON
+           input.
+    @param[in] len  The length (including the zero-byte at the end) of the
+                    string to be read.
+    @param[in,out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 1
+    @return `true` if the string was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_string(const NumberType len, string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 1))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::bson, "string length must be at least 1, is " + std::to_string(len), "string"), BasicJsonType()));
+        }
+
+        return get_string(input_format_t::bson, len - static_cast<NumberType>(1), result) && get() != std::char_traits<char_type>::eof();
+    }
+
+    /*!
+    @brief Parses a byte array input of length @a len from the BSON input.
+    @param[in] len  The length of the byte array to be read.
+    @param[in,out] result  A reference to the binary variable where the read
+                            array is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 0
+    @return `true` if the byte array was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_binary(const NumberType len, binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 0))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::bson, "byte array length cannot be negative, is " + std::to_string(len), "binary"), BasicJsonType()));
+        }
+
+        // All BSON binary values have a subtype
+        std::uint8_t subtype{};
+        get_number<std::uint8_t>(input_format_t::bson, subtype);
+        result.set_subtype(subtype);
+
+        return get_binary(input_format_t::bson, len, result);
+    }
+
+    /*!
+    @brief Read a BSON document element of the given @a element_type.
+    @param[in] element_type The BSON element type, c.f. http://bsonspec.org/spec.html
+    @param[in] element_type_parse_position The position in the input stream,
+               where the `element_type` was read.
+    @warning Not all BSON element types are supported yet. An unsupported
+             @a element_type will give rise to a parse_error.114:
+             Unsupported BSON record type 0x...
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_internal(const char_int_type element_type,
+                                     const std::size_t element_type_parse_position)
+    {
+        switch (element_type)
+        {
+            case 0x01: // double
+            {
+                double number{};
+                return get_number<double, true>(input_format_t::bson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0x02: // string
+            {
+                std::int32_t len{};
+                string_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_string(len, value) && sax->string(value);
+            }
+
+            case 0x03: // object
+            {
+                return parse_bson_internal();
+            }
+
+            case 0x04: // array
+            {
+                return parse_bson_array();
+            }
+
+            case 0x05: // binary
+            {
+                std::int32_t len{};
+                binary_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_binary(len, value) && sax->binary(value);
+            }
+
+            case 0x08: // boolean
+            {
+                return sax->boolean(get() != 0);
+            }
+
+            case 0x0A: // null
+            {
+                return sax->null();
+            }
+
+            case 0x10: // int32
+            {
+                std::int32_t value{};
+                return get_number<std::int32_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            case 0x12: // int64
+            {
+                std::int64_t value{};
+                return get_number<std::int64_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            default: // anything else not supported (yet)
+            {
+                std::array<char, 3> cr{{}};
+                static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                return sax->parse_error(element_type_parse_position, std::string(cr.data()), parse_error::create(114, element_type_parse_position, "Unsupported BSON record type 0x" + std::string(cr.data()), BasicJsonType()));
+            }
+        }
+    }
+
+    /*!
+    @brief Read a BSON element list (as specified in the BSON-spec)
+
+    The same binary layout is used for objects and arrays, hence it must be
+    indicated with the argument @a is_array which one is expected
+    (true --> array, false --> object).
+
+    @param[in] is_array Determines if the element list being read is to be
+                        treated as an object (@a is_array == false), or as an
+                        array (@a is_array == true).
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_list(const bool is_array)
+    {
+        string_t key;
+
+        while (auto element_type = get())
+        {
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "element list")))
+            {
+                return false;
+            }
+
+            const std::size_t element_type_parse_position = chars_read;
+            if (JSON_HEDLEY_UNLIKELY(!get_bson_cstr(key)))
+            {
+                return false;
+            }
+
+            if (!is_array && !sax->key(key))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_internal(element_type, element_type_parse_position)))
+            {
+                return false;
+            }
+
+            // get_bson_cstr only appends
+            key.clear();
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief Reads an array from the BSON input and passes it to the SAX-parser.
+    @return whether a valid BSON-array was passed to the SAX parser
+    */
+    bool parse_bson_array()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/true)))
+        {
+            return false;
+        }
+
+        return sax->end_array();
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true) or whether the last read character should
+                         be considered instead (false)
+    @param[in] tag_handler how CBOR tags should be treated
+
+    @return whether a valid CBOR value was passed to the SAX parser
+    */
+    bool parse_cbor_internal(const bool get_char,
+                             const cbor_tag_handler_t tag_handler)
+    {
+        switch (get_char ? get() : current)
+        {
+            // EOF
+            case std::char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::cbor, "value");
+
+            // Integer 0x00..0x17 (0..23)
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            case 0x18: // Unsigned integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x19: // Unsigned integer (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1A: // Unsigned integer (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1B: // Unsigned integer (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            // Negative integer -1-0x00..-1-0x17 (-1..-24)
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+                return sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - current));
+
+            case 0x38: // Negative integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3A: // Negative integer -1-n (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3B: // Negative integer -1-n (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
+                        - static_cast<number_integer_t>(number));
+            }
+
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            case 0x5F: // Binary data (indefinite length)
+            {
+                binary_t b;
+                return get_cbor_binary(b) && sax->binary(b);
+            }
+
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                string_t s;
+                return get_cbor_string(s) && sax->string(s);
+            }
+
+            // array (0x00..0x17 data items follow)
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+                return get_cbor_array(static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0x98: // array (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x99: // array (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9A: // array (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9B: // array (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(detail::conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9F: // array (indefinite length)
+                return get_cbor_array(static_cast<std::size_t>(-1), tag_handler);
+
+            // map (0x00..0x17 pairs of data items follow)
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+                return get_cbor_object(static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0xB8: // map (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xB9: // map (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBA: // map (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBB: // map (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(detail::conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBF: // map (indefinite length)
+                return get_cbor_object(static_cast<std::size_t>(-1), tag_handler);
+
+            case 0xC6: // tagged item
+            case 0xC7:
+            case 0xC8:
+            case 0xC9:
+            case 0xCA:
+            case 0xCB:
+            case 0xCC:
+            case 0xCD:
+            case 0xCE:
+            case 0xCF:
+            case 0xD0:
+            case 0xD1:
+            case 0xD2:
+            case 0xD3:
+            case 0xD4:
+            case 0xD8: // tagged item (1 bytes follow)
+            case 0xD9: // tagged item (2 bytes follow)
+            case 0xDA: // tagged item (4 bytes follow)
+            case 0xDB: // tagged item (8 bytes follow)
+            {
+                switch (tag_handler)
+                {
+                    case cbor_tag_handler_t::error:
+                    {
+                        auto last_token = get_token_string();
+                        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::cbor, "invalid byte: 0x" + last_token, "value"), BasicJsonType()));
+                    }
+
+                    case cbor_tag_handler_t::ignore:
+                    {
+                        // ignore binary subtype
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            default:
+                                break;
+                        }
+                        return parse_cbor_internal(true, tag_handler);
+                    }
+
+                    case cbor_tag_handler_t::store:
+                    {
+                        binary_t b;
+                        // use binary subtype and store in binary container
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            default:
+                                return parse_cbor_internal(true, tag_handler);
+                        }
+                        get();
+                        return get_cbor_binary(b) && sax->binary(b);
+                    }
+
+                    default:                 // LCOV_EXCL_LINE
+                        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+                        return false;        // LCOV_EXCL_LINE
+                }
+            }
+
+            case 0xF4: // false
+                return sax->boolean(false);
+
+            case 0xF5: // true
+                return sax->boolean(true);
+
+            case 0xF6: // null
+                return sax->null();
+
+            case 0xF9: // Half-Precision Float (two-byte IEEE 754)
+            {
+                const auto byte1_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+                const auto byte2_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+
+                const auto byte1 = static_cast<unsigned char>(byte1_raw);
+                const auto byte2 = static_cast<unsigned char>(byte2_raw);
+
+                // code from RFC 7049, Appendix D, Figure 3:
+                // As half-precision floating-point numbers were only added
+                // to IEEE 754 in 2008, today's programming platforms often
+                // still only have limited support for them. It is very
+                // easy to include at least decoding support for them even
+                // without such support. An example of a small decoder for
+                // half-precision floating-point numbers in the C language
+                // is shown in Fig. 3.
+                const auto half = static_cast<unsigned int>((byte1 << 8u) + byte2);
+                const double val = [&half]
+                {
+                    const int exp = (half >> 10u) & 0x1Fu;
+                    const unsigned int mant = half & 0x3FFu;
+                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(mant <= 1024);
+                    switch (exp)
+                    {
+                        case 0:
+                            return std::ldexp(mant, -24);
+                        case 31:
+                            return (mant == 0)
+                            ? std::numeric_limits<double>::infinity()
+                            : std::numeric_limits<double>::quiet_NaN();
+                        default:
+                            return std::ldexp(mant + 1024, exp - 25);
+                    }
+                }();
+                return sax->number_float((half & 0x8000u) != 0
+                                         ? static_cast<number_float_t>(-val)
+                                         : static_cast<number_float_t>(val), "");
+            }
+
+            case 0xFA: // Single-Precision Float (four-byte IEEE 754)
+            {
+                float number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xFB: // Double-Precision Float (eight-byte IEEE 754)
+            {
+                double number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            default: // anything else (0xFF is handled inside the other types)
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::cbor, "invalid byte: 0x" + last_token, "value"), BasicJsonType()));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+    Additionally, CBOR's strings with indefinite lengths are supported.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_cbor_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            {
+                return get_string(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    string_t chunk;
+                    if (!get_cbor_string(chunk))
+                    {
+                        return false;
+                    }
+                    result.append(chunk);
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::cbor, "expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x" + last_token, "string"), BasicJsonType()));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into the byte array.
+    Additionally, CBOR's byte arrays with indefinite lengths are supported.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_cbor_binary(binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "binary")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            {
+                return get_binary(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5F: // Binary data (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    binary_t chunk;
+                    if (!get_cbor_binary(chunk))
+                    {
+                        return false;
+                    }
+                    result.insert(result.end(), chunk.begin(), chunk.end());
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::cbor, "expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x" + last_token, "binary"), BasicJsonType()));
+            }
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array or static_cast<std::size_t>(-1) for an
+                    array of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether array creation completed
+    */
+    bool get_cbor_array(const std::size_t len,
+                        const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        if (len != static_cast<std::size_t>(-1))
+        {
+            for (std::size_t i = 0; i < len; ++i)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+        else
+        {
+            while (get() != 0xFF)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(false, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object or static_cast<std::size_t>(-1) for an
+                    object of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether object creation completed
+    */
+    bool get_cbor_object(const std::size_t len,
+                         const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        if (len != 0)
+        {
+            string_t key;
+            if (len != static_cast<std::size_t>(-1))
+            {
+                for (std::size_t i = 0; i < len; ++i)
+                {
+                    get();
+                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                while (get() != 0xFF)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    /*!
+    @return whether a valid MessagePack value was passed to the SAX parser
+    */
+    bool parse_msgpack_internal()
+    {
+        switch (get())
+        {
+            // EOF
+            case std::char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::msgpack, "value");
+
+            // positive fixint
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+            case 0x18:
+            case 0x19:
+            case 0x1A:
+            case 0x1B:
+            case 0x1C:
+            case 0x1D:
+            case 0x1E:
+            case 0x1F:
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+            case 0x38:
+            case 0x39:
+            case 0x3A:
+            case 0x3B:
+            case 0x3C:
+            case 0x3D:
+            case 0x3E:
+            case 0x3F:
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58:
+            case 0x59:
+            case 0x5A:
+            case 0x5B:
+            case 0x5C:
+            case 0x5D:
+            case 0x5E:
+            case 0x5F:
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78:
+            case 0x79:
+            case 0x7A:
+            case 0x7B:
+            case 0x7C:
+            case 0x7D:
+            case 0x7E:
+            case 0x7F:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            // fixmap
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+                return get_msgpack_object(static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixarray
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+            case 0x98:
+            case 0x99:
+            case 0x9A:
+            case 0x9B:
+            case 0x9C:
+            case 0x9D:
+            case 0x9E:
+            case 0x9F:
+                return get_msgpack_array(static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            case 0xD9: // str 8
+            case 0xDA: // str 16
+            case 0xDB: // str 32
+            {
+                string_t s;
+                return get_msgpack_string(s) && sax->string(s);
+            }
+
+            case 0xC0: // nil
+                return sax->null();
+
+            case 0xC2: // false
+                return sax->boolean(false);
+
+            case 0xC3: // true
+                return sax->boolean(true);
+
+            case 0xC4: // bin 8
+            case 0xC5: // bin 16
+            case 0xC6: // bin 32
+            case 0xC7: // ext 8
+            case 0xC8: // ext 16
+            case 0xC9: // ext 32
+            case 0xD4: // fixext 1
+            case 0xD5: // fixext 2
+            case 0xD6: // fixext 4
+            case 0xD7: // fixext 8
+            case 0xD8: // fixext 16
+            {
+                binary_t b;
+                return get_msgpack_binary(b) && sax->binary(b);
+            }
+
+            case 0xCA: // float 32
+            {
+                float number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCB: // float 64
+            {
+                double number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCC: // uint 8
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCD: // uint 16
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCE: // uint 32
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCF: // uint 64
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xD0: // int 8
+            {
+                std::int8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD1: // int 16
+            {
+                std::int16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD2: // int 32
+            {
+                std::int32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD3: // int 64
+            {
+                std::int64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xDC: // array 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(static_cast<std::size_t>(len));
+            }
+
+            case 0xDD: // array 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(static_cast<std::size_t>(len));
+            }
+
+            case 0xDE: // map 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(static_cast<std::size_t>(len));
+            }
+
+            case 0xDF: // map 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(static_cast<std::size_t>(len));
+            }
+
+            // negative fixint
+            case 0xE0:
+            case 0xE1:
+            case 0xE2:
+            case 0xE3:
+            case 0xE4:
+            case 0xE5:
+            case 0xE6:
+            case 0xE7:
+            case 0xE8:
+            case 0xE9:
+            case 0xEA:
+            case 0xEB:
+            case 0xEC:
+            case 0xED:
+            case 0xEE:
+            case 0xEF:
+            case 0xF0:
+            case 0xF1:
+            case 0xF2:
+            case 0xF3:
+            case 0xF4:
+            case 0xF5:
+            case 0xF6:
+            case 0xF7:
+            case 0xF8:
+            case 0xF9:
+            case 0xFA:
+            case 0xFB:
+            case 0xFC:
+            case 0xFD:
+            case 0xFE:
+            case 0xFF:
+                return sax->number_integer(static_cast<std::int8_t>(current));
+
+            default: // anything else
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::msgpack, "invalid byte: 0x" + last_token, "value"), BasicJsonType()));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_msgpack_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::msgpack, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            {
+                return get_string(input_format_t::msgpack, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0xD9: // str 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDA: // str 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDB: // str 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::msgpack, "expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x" + last_token, "string"), BasicJsonType()));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into a byte array.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_msgpack_binary(binary_t& result)
+    {
+        // helper function to set the subtype
+        auto assign_and_return_true = [&result](std::int8_t subtype)
+        {
+            result.set_subtype(static_cast<std::uint8_t>(subtype));
+            return true;
+        };
+
+        switch (current)
+        {
+            case 0xC4: // bin 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC5: // bin 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC6: // bin 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC7: // ext 8
+            {
+                std::uint8_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC8: // ext 16
+            {
+                std::uint16_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC9: // ext 32
+            {
+                std::uint32_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD4: // fixext 1
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 1, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD5: // fixext 2
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 2, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD6: // fixext 4
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 4, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD7: // fixext 8
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 8, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD8: // fixext 16
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 16, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            default:           // LCOV_EXCL_LINE
+                return false;  // LCOV_EXCL_LINE
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array
+    @return whether array creation completed
+    */
+    bool get_msgpack_array(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object
+    @return whether object creation completed
+    */
+    bool get_msgpack_object(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        string_t key;
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!get_msgpack_string(key) || !sax->key(key)))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+            key.clear();
+        }
+
+        return sax->end_object();
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether a valid UBJSON value was passed to the SAX parser
+    */
+    bool parse_ubjson_internal(const bool get_char = true)
+    {
+        return get_ubjson_value(get_char ? get_ignore_noop() : current);
+    }
+
+    /*!
+    @brief reads a UBJSON string
+
+    This function is either called after reading the 'S' byte explicitly
+    indicating a string, or in case of an object key where the 'S' byte can be
+    left out.
+
+    @param[out] result   created string
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether string creation completed
+    */
+    bool get_ubjson_string(string_t& result, const bool get_char = true)
+    {
+        if (get_char)
+        {
+            get();  // TODO(niels): may we ignore N here?
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "value")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            case 'U':
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            case 'i':
+            {
+                std::int8_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            case 'I':
+            {
+                std::int16_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            case 'l':
+            {
+                std::int32_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            case 'L':
+            {
+                std::int64_t len{};
+                return get_number(input_format_t::ubjson, len) && get_string(input_format_t::ubjson, len, result);
+            }
+
+            default:
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::ubjson, "expected length type specification (U, i, I, l, L); last byte: 0x" + last_token, "string"), BasicJsonType()));
+        }
+    }
+
+    /*!
+    @param[out] result  determined size
+    @return whether size determination completed
+    */
+    bool get_ubjson_size_value(std::size_t& result)
+    {
+        switch (get_ignore_noop())
+        {
+            case 'U':
+            {
+                std::uint8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number); // NOLINT(bugprone-signed-char-misuse,cert-str34-c): number is not a char
+                return true;
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::ubjson, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::ubjson, "expected length type specification (U, i, I, l, L) after '#'; last byte: 0x" + last_token, "size"), BasicJsonType()));
+            }
+        }
+    }
+
+    /*!
+    @brief determine the type and size for a container
+
+    In the optimized UBJSON format, a type and a size can be provided to allow
+    for a more compact representation.
+
+    @param[out] result  pair of the size and the type
+
+    @return whether pair creation completed
+    */
+    bool get_ubjson_size_type(std::pair<std::size_t, char_int_type>& result)
+    {
+        result.first = string_t::npos; // size
+        result.second = 0; // type
+
+        get_ignore_noop();
+
+        if (current == '$')
+        {
+            result.second = get();  // must not ignore 'N', because 'N' maybe the type
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "type")))
+            {
+                return false;
+            }
+
+            get_ignore_noop();
+            if (JSON_HEDLEY_UNLIKELY(current != '#'))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "value")))
+                {
+                    return false;
+                }
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::ubjson, "expected '#' after type information; last byte: 0x" + last_token, "size"), BasicJsonType()));
+            }
+
+            return get_ubjson_size_value(result.first);
+        }
+
+        if (current == '#')
+        {
+            return get_ubjson_size_value(result.first);
+        }
+
+        return true;
+    }
+
+    /*!
+    @param prefix  the previously read or set type prefix
+    @return whether value creation completed
+    */
+    bool get_ubjson_value(const char_int_type prefix)
+    {
+        switch (prefix)
+        {
+            case std::char_traits<char_type>::eof():  // EOF
+                return unexpect_eof(input_format_t::ubjson, "value");
+
+            case 'T':  // true
+                return sax->boolean(true);
+            case 'F':  // false
+                return sax->boolean(false);
+
+            case 'Z':  // null
+                return sax->null();
+
+            case 'U':
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_unsigned(number);
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_integer(number);
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_integer(number);
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_integer(number);
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_integer(number);
+            }
+
+            case 'd':
+            {
+                float number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'D':
+            {
+                double number{};
+                return get_number(input_format_t::ubjson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'H':
+            {
+                return get_ubjson_high_precision_number();
+            }
+
+            case 'C':  // char
+            {
+                get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "char")))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(current > 127))
+                {
+                    auto last_token = get_token_string();
+                    return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format_t::ubjson, "byte after 'C' must be in range 0x00..0x7F; last byte: 0x" + last_token, "char"), BasicJsonType()));
+                }
+                string_t s(1, static_cast<typename string_t::value_type>(current));
+                return sax->string(s);
+            }
+
+            case 'S':  // string
+            {
+                string_t s;
+                return get_ubjson_string(s) && sax->string(s);
+            }
+
+            case '[':  // array
+                return get_ubjson_array();
+
+            case '{':  // object
+                return get_ubjson_object();
+
+            default: // anything else
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format_t::ubjson, "invalid byte: 0x" + last_token, "value"), BasicJsonType()));
+            }
+        }
+    }
+
+    /*!
+    @return whether array creation completed
+    */
+    bool get_ubjson_array()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        if (size_and_type.first != string_t::npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                if (size_and_type.second != 'N')
+                {
+                    for (std::size_t i = 0; i < size_and_type.first; ++i)
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                        {
+                            return false;
+                        }
+                    }
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+            {
+                return false;
+            }
+
+            while (current != ']')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal(false)))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @return whether object creation completed
+    */
+    bool get_ubjson_object()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        string_t key;
+        if (size_and_type.first != string_t::npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+            {
+                return false;
+            }
+
+            while (current != '}')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key, false) || !sax->key(key)))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+                key.clear();
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    // Note, no reader for UBJSON binary types is implemented because they do
+    // not exist
+
+    bool get_ubjson_high_precision_number()
+    {
+        // get size of following number string
+        std::size_t size{};
+        auto res = get_ubjson_size_value(size);
+        if (JSON_HEDLEY_UNLIKELY(!res))
+        {
+            return res;
+        }
+
+        // get number string
+        std::vector<char> number_vector;
+        for (std::size_t i = 0; i < size; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::ubjson, "number")))
+            {
+                return false;
+            }
+            number_vector.push_back(static_cast<char>(current));
+        }
+
+        // parse number string
+        using ia_type = decltype(detail::input_adapter(number_vector));
+        auto number_lexer = detail::lexer<BasicJsonType, ia_type>(detail::input_adapter(number_vector), false);
+        const auto result_number = number_lexer.scan();
+        const auto number_string = number_lexer.get_token_string();
+        const auto result_remainder = number_lexer.scan();
+
+        using token_type = typename detail::lexer_base<BasicJsonType>::token_type;
+
+        if (JSON_HEDLEY_UNLIKELY(result_remainder != token_type::end_of_input))
+        {
+            return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read, exception_message(input_format_t::ubjson, "invalid number text: " + number_lexer.get_token_string(), "high-precision number"), BasicJsonType()));
+        }
+
+        switch (result_number)
+        {
+            case token_type::value_integer:
+                return sax->number_integer(number_lexer.get_number_integer());
+            case token_type::value_unsigned:
+                return sax->number_unsigned(number_lexer.get_number_unsigned());
+            case token_type::value_float:
+                return sax->number_float(number_lexer.get_number_float(), std::move(number_string));
+            case token_type::uninitialized:
+            case token_type::literal_true:
+            case token_type::literal_false:
+            case token_type::literal_null:
+            case token_type::value_string:
+            case token_type::begin_array:
+            case token_type::begin_object:
+            case token_type::end_array:
+            case token_type::end_object:
+            case token_type::name_separator:
+            case token_type::value_separator:
+            case token_type::parse_error:
+            case token_type::end_of_input:
+            case token_type::literal_or_value:
+            default:
+                return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read, exception_message(input_format_t::ubjson, "invalid number text: " + number_lexer.get_token_string(), "high-precision number"), BasicJsonType()));
+        }
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*!
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a -'ve valued
+    `std::char_traits<char_type>::eof()` in that case.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++chars_read;
+        return current = ia.get_character();
+    }
+
+    /*!
+    @return character read from the input after ignoring all 'N' entries
+    */
+    char_int_type get_ignore_noop()
+    {
+        do
+        {
+            get();
+        }
+        while (current == 'N');
+
+        return current;
+    }
+
+    /*
+    @brief read a number from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format   the current format (for diagnostics)
+    @param[out] result  number of type @a NumberType
+
+    @return whether conversion completed
+
+    @note This function needs to respect the system's endianness, because
+          bytes in CBOR, MessagePack, and UBJSON are stored in network order
+          (big endian) and therefore need reordering on little endian systems.
+    */
+    template<typename NumberType, bool InputIsLittleEndian = false>
+    bool get_number(const input_format_t format, NumberType& result)
+    {
+        // step 1: read input into array with system's byte order
+        std::array<std::uint8_t, sizeof(NumberType)> vec{};
+        for (std::size_t i = 0; i < sizeof(NumberType); ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "number")))
+            {
+                return false;
+            }
+
+            // reverse byte order prior to conversion if necessary
+            if (is_little_endian != InputIsLittleEndian)
+            {
+                vec[sizeof(NumberType) - i - 1] = static_cast<std::uint8_t>(current);
+            }
+            else
+            {
+                vec[i] = static_cast<std::uint8_t>(current); // LCOV_EXCL_LINE
+            }
+        }
+
+        // step 2: convert array into number of type T and return
+        std::memcpy(&result, vec.data(), sizeof(NumberType));
+        return true;
+    }
+
+    /*!
+    @brief create a string by reading characters from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of characters to read
+    @param[out] result string created by reading @a len bytes
+
+    @return whether string creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of string memory.
+    */
+    template<typename NumberType>
+    bool get_string(const input_format_t format,
+                    const NumberType len,
+                    string_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "string")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<typename string_t::value_type>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @brief create a byte array by reading bytes from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of bytes to read
+    @param[out] result byte array created by reading @a len bytes
+
+    @return whether byte array creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of memory.
+    */
+    template<typename NumberType>
+    bool get_binary(const input_format_t format,
+                    const NumberType len,
+                    binary_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "binary")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<std::uint8_t>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @param[in] format   the current format (for diagnostics)
+    @param[in] context  further context information (for diagnostics)
+    @return whether the last read character is not EOF
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool unexpect_eof(const input_format_t format, const char* context) const
+    {
+        if (JSON_HEDLEY_UNLIKELY(current == std::char_traits<char_type>::eof()))
+        {
+            return sax->parse_error(chars_read, "<end of file>",
+                                    parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context), BasicJsonType()));
+        }
+        return true;
+    }
+
+    /*!
+    @return a string representation of the last read byte
+    */
+    std::string get_token_string() const
+    {
+        std::array<char, 3> cr{{}};
+        static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        return std::string{cr.data()};
+    }
+
+    /*!
+    @param[in] format   the current format
+    @param[in] detail   a detailed error message
+    @param[in] context  further context information
+    @return a message string to use in the parse_error exceptions
+    */
+    std::string exception_message(const input_format_t format,
+                                  const std::string& detail,
+                                  const std::string& context) const
+    {
+        std::string error_msg = "syntax error while parsing ";
+
+        switch (format)
+        {
+            case input_format_t::cbor:
+                error_msg += "CBOR";
+                break;
+
+            case input_format_t::msgpack:
+                error_msg += "MessagePack";
+                break;
+
+            case input_format_t::ubjson:
+                error_msg += "UBJSON";
+                break;
+
+            case input_format_t::bson:
+                error_msg += "BSON";
+                break;
+
+            case input_format_t::json: // LCOV_EXCL_LINE
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+        return error_msg + " " + context + ": " + detail;
+    }
+
+  private:
+    /// input adapter
+    InputAdapterType ia;
+
+    /// the current character
+    char_int_type current = std::char_traits<char_type>::eof();
+
+    /// the number of characters read
+    std::size_t chars_read = 0;
+
+    /// whether we can assume little endianness
+    const bool is_little_endian = little_endianness();
+
+    /// the SAX parser
+    json_sax_t* sax = nullptr;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/input/parser.hpp>
+
+
+#include <cmath> // isfinite
+#include <cstdint> // uint8_t
+#include <functional> // function
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/json_sax.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/is_sax.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+////////////
+// parser //
+////////////
+
+enum class parse_event_t : std::uint8_t
+{
+    /// the parser read `{` and started to process a JSON object
+    object_start,
+    /// the parser read `}` and finished processing a JSON object
+    object_end,
+    /// the parser read `[` and started to process a JSON array
+    array_start,
+    /// the parser read `]` and finished processing a JSON array
+    array_end,
+    /// the parser read a key of a value in an object
+    key,
+    /// the parser finished reading a JSON value
+    value
+};
+
+template<typename BasicJsonType>
+using parser_callback_t =
+    std::function<bool(int /*depth*/, parse_event_t /*event*/, BasicJsonType& /*parsed*/)>;
+
+/*!
+@brief syntax analysis
+
+This class implements a recursive descent parser.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class parser
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+    using token_type = typename lexer_t::token_type;
+
+  public:
+    /// a parser reading from an input adapter
+    explicit parser(InputAdapterType&& adapter,
+                    const parser_callback_t<BasicJsonType> cb = nullptr,
+                    const bool allow_exceptions_ = true,
+                    const bool skip_comments = false)
+        : callback(cb)
+        , m_lexer(std::move(adapter), skip_comments)
+        , allow_exceptions(allow_exceptions_)
+    {
+        // read first token
+        get_token();
+    }
+
+    /*!
+    @brief public parser interface
+
+    @param[in] strict      whether to expect the last token to be EOF
+    @param[in,out] result  parsed JSON value
+
+    @throw parse_error.101 in case of an unexpected token
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+    */
+    void parse(const bool strict, BasicJsonType& result)
+    {
+        if (callback)
+        {
+            json_sax_dom_callback_parser<BasicJsonType> sdp(result, callback, allow_exceptions);
+            sax_parse_internal(&sdp);
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(),
+                                                    exception_message(token_type::end_of_input, "value"), BasicJsonType()));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+
+            // set top-level value to null if it was discarded by the callback
+            // function
+            if (result.is_discarded())
+            {
+                result = nullptr;
+            }
+        }
+        else
+        {
+            json_sax_dom_parser<BasicJsonType> sdp(result, allow_exceptions);
+            sax_parse_internal(&sdp);
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), BasicJsonType()));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+        }
+
+        result.assert_invariant();
+    }
+
+    /*!
+    @brief public accept interface
+
+    @param[in] strict  whether to expect the last token to be EOF
+    @return whether the input is a proper JSON text
+    */
+    bool accept(const bool strict = true)
+    {
+        json_sax_acceptor<BasicJsonType> sax_acceptor;
+        return sax_parse(&sax_acceptor, strict);
+    }
+
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse(SAX* sax, const bool strict = true)
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+        const bool result = sax_parse_internal(sax);
+
+        // strict mode: next byte must be EOF
+        if (result && strict && (get_token() != token_type::end_of_input))
+        {
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), BasicJsonType()));
+        }
+
+        return result;
+    }
+
+  private:
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse_internal(SAX* sax)
+    {
+        // stack to remember the hierarchy of structured values we are parsing
+        // true = array; false = object
+        std::vector<bool> states;
+        // value to avoid a goto (see comment where set to true)
+        bool skip_to_state_evaluation = false;
+
+        while (true)
+        {
+            if (!skip_to_state_evaluation)
+            {
+                // invariant: get_token() was called before each iteration
+                switch (last_token)
+                {
+                    case token_type::begin_object:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing } -> we are done
+                        if (get_token() == token_type::end_object)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // parse key
+                        if (JSON_HEDLEY_UNLIKELY(last_token != token_type::value_string))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), BasicJsonType()));
+                        }
+                        if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        // parse separator (:)
+                        if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), BasicJsonType()));
+                        }
+
+                        // remember we are now inside an object
+                        states.push_back(false);
+
+                        // parse values
+                        get_token();
+                        continue;
+                    }
+
+                    case token_type::begin_array:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing ] -> we are done
+                        if (get_token() == token_type::end_array)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // remember we are now inside an array
+                        states.push_back(true);
+
+                        // parse values (no need to call get_token)
+                        continue;
+                    }
+
+                    case token_type::value_float:
+                    {
+                        const auto res = m_lexer.get_number_float();
+
+                        if (JSON_HEDLEY_UNLIKELY(!std::isfinite(res)))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    out_of_range::create(406, "number overflow parsing '" + m_lexer.get_token_string() + "'", BasicJsonType()));
+                        }
+
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_float(res, m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        break;
+                    }
+
+                    case token_type::literal_false:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(false)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_null:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->null()))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_true:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(true)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_integer:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_integer(m_lexer.get_number_integer())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_string:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->string(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_unsigned:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(m_lexer.get_number_unsigned())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::parse_error:
+                    {
+                        // using "uninitialized" to avoid "expected" message
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::uninitialized, "value"), BasicJsonType()));
+                    }
+
+                    case token_type::uninitialized:
+                    case token_type::end_array:
+                    case token_type::end_object:
+                    case token_type::name_separator:
+                    case token_type::value_separator:
+                    case token_type::end_of_input:
+                    case token_type::literal_or_value:
+                    default: // the last token was unexpected
+                    {
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), BasicJsonType()));
+                    }
+                }
+            }
+            else
+            {
+                skip_to_state_evaluation = false;
+            }
+
+            // we reached this line after we successfully parsed a value
+            if (states.empty())
+            {
+                // empty stack: we reached the end of the hierarchy: done
+                return true;
+            }
+
+            if (states.back())  // array
+            {
+                // comma -> next value
+                if (get_token() == token_type::value_separator)
+                {
+                    // parse a new value
+                    get_token();
+                    continue;
+                }
+
+                // closing ]
+                if (JSON_HEDLEY_LIKELY(last_token == token_type::end_array))
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                    {
+                        return false;
+                    }
+
+                    // We are done with this array. Before we can parse a
+                    // new value, we need to evaluate the new state first.
+                    // By setting skip_to_state_evaluation to false, we
+                    // are effectively jumping to the beginning of this if.
+                    JSON_ASSERT(!states.empty());
+                    states.pop_back();
+                    skip_to_state_evaluation = true;
+                    continue;
+                }
+
+                return sax->parse_error(m_lexer.get_position(),
+                                        m_lexer.get_token_string(),
+                                        parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_array, "array"), BasicJsonType()));
+            }
+
+            // states.back() is false -> object
+
+            // comma -> next value
+            if (get_token() == token_type::value_separator)
+            {
+                // parse key
+                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::value_string))
+                {
+                    return sax->parse_error(m_lexer.get_position(),
+                                            m_lexer.get_token_string(),
+                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), BasicJsonType()));
+                }
+
+                if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                {
+                    return false;
+                }
+
+                // parse separator (:)
+                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                {
+                    return sax->parse_error(m_lexer.get_position(),
+                                            m_lexer.get_token_string(),
+                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), BasicJsonType()));
+                }
+
+                // parse values
+                get_token();
+                continue;
+            }
+
+            // closing }
+            if (JSON_HEDLEY_LIKELY(last_token == token_type::end_object))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                {
+                    return false;
+                }
+
+                // We are done with this object. Before we can parse a
+                // new value, we need to evaluate the new state first.
+                // By setting skip_to_state_evaluation to false, we
+                // are effectively jumping to the beginning of this if.
+                JSON_ASSERT(!states.empty());
+                states.pop_back();
+                skip_to_state_evaluation = true;
+                continue;
+            }
+
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_object, "object"), BasicJsonType()));
+        }
+    }
+
+    /// get next token from lexer
+    token_type get_token()
+    {
+        return last_token = m_lexer.scan();
+    }
+
+    std::string exception_message(const token_type expected, const std::string& context)
+    {
+        std::string error_msg = "syntax error ";
+
+        if (!context.empty())
+        {
+            error_msg += "while parsing " + context + " ";
+        }
+
+        error_msg += "- ";
+
+        if (last_token == token_type::parse_error)
+        {
+            error_msg += std::string(m_lexer.get_error_message()) + "; last read: '" +
+                         m_lexer.get_token_string() + "'";
+        }
+        else
+        {
+            error_msg += "unexpected " + std::string(lexer_t::token_type_name(last_token));
+        }
+
+        if (expected != token_type::uninitialized)
+        {
+            error_msg += "; expected " + std::string(lexer_t::token_type_name(expected));
+        }
+
+        return error_msg;
+    }
+
+  private:
+    /// callback function
+    const parser_callback_t<BasicJsonType> callback = nullptr;
+    /// the type of the last read token
+    token_type last_token = token_type::uninitialized;
+    /// the lexer
+    lexer_t m_lexer;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+};
+
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/iterators/internal_iterator.hpp>
+
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+
+#include <cstddef> // ptrdiff_t
+#include <limits>  // numeric_limits
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+/*
+@brief an iterator for primitive JSON types
+
+This class models an iterator for primitive JSON types (boolean, number,
+string). It's only purpose is to allow the iterator/const_iterator classes
+to "iterate" over primitive values. Internally, the iterator is modeled by
+a `difference_type` variable. Value begin_value (`0`) models the begin,
+end_value (`1`) models past the end.
+*/
+class primitive_iterator_t
+{
+  private:
+    using difference_type = std::ptrdiff_t;
+    static constexpr difference_type begin_value = 0;
+    static constexpr difference_type end_value = begin_value + 1;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /// iterator as signed integer type
+    difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
+
+  public:
+    constexpr difference_type get_value() const noexcept
+    {
+        return m_it;
+    }
+
+    /// set iterator to a defined beginning
+    void set_begin() noexcept
+    {
+        m_it = begin_value;
+    }
+
+    /// set iterator to a defined past the end
+    void set_end() noexcept
+    {
+        m_it = end_value;
+    }
+
+    /// return whether the iterator can be dereferenced
+    constexpr bool is_begin() const noexcept
+    {
+        return m_it == begin_value;
+    }
+
+    /// return whether the iterator is at end
+    constexpr bool is_end() const noexcept
+    {
+        return m_it == end_value;
+    }
+
+    friend constexpr bool operator==(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it == rhs.m_it;
+    }
+
+    friend constexpr bool operator<(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it < rhs.m_it;
+    }
+
+    primitive_iterator_t operator+(difference_type n) noexcept
+    {
+        auto result = *this;
+        result += n;
+        return result;
+    }
+
+    friend constexpr difference_type operator-(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it - rhs.m_it;
+    }
+
+    primitive_iterator_t& operator++() noexcept
+    {
+        ++m_it;
+        return *this;
+    }
+
+    primitive_iterator_t const operator++(int) noexcept // NOLINT(readability-const-return-type)
+    {
+        auto result = *this;
+        ++m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator--() noexcept
+    {
+        --m_it;
+        return *this;
+    }
+
+    primitive_iterator_t const operator--(int) noexcept // NOLINT(readability-const-return-type)
+    {
+        auto result = *this;
+        --m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator+=(difference_type n) noexcept
+    {
+        m_it += n;
+        return *this;
+    }
+
+    primitive_iterator_t& operator-=(difference_type n) noexcept
+    {
+        m_it -= n;
+        return *this;
+    }
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+
+namespace nlohmann
+{
+namespace detail
+{
+/*!
+@brief an iterator value
+
+@note This structure could easily be a union, but MSVC currently does not allow
+unions members with complex constructors, see https://github.com/nlohmann/json/pull/105.
+*/
+template<typename BasicJsonType> struct internal_iterator
+{
+    /// iterator for JSON objects
+    typename BasicJsonType::object_t::iterator object_iterator {};
+    /// iterator for JSON arrays
+    typename BasicJsonType::array_t::iterator array_iterator {};
+    /// generic iterator for all other types
+    primitive_iterator_t primitive_iterator {};
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/iterators/iter_impl.hpp>
+
+
+#include <iterator> // iterator, random_access_iterator_tag, bidirectional_iterator_tag, advance, next
+#include <type_traits> // conditional, is_const, remove_const
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/iterators/internal_iterator.hpp>
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+// forward declare, to be able to friend it later on
+template<typename IteratorType> class iteration_proxy;
+template<typename IteratorType> class iteration_proxy_value;
+
+/*!
+@brief a template for a bidirectional iterator for the @ref basic_json class
+This class implements a both iterators (iterator and const_iterator) for the
+@ref basic_json class.
+@note An iterator is called *initialized* when a pointer to a JSON value has
+      been set (e.g., by a constructor or a copy assignment). If the iterator is
+      default-constructed, it is *uninitialized* and most methods are undefined.
+      **The library uses assertions to detect calls on uninitialized iterators.**
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+@since version 1.0.0, simplified in version 2.0.9, change to bidirectional
+       iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)
+*/
+template<typename BasicJsonType>
+class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+{
+    /// the iterator with BasicJsonType of different const-ness
+    using other_iter_impl = iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
+    /// allow basic_json to access private members
+    friend other_iter_impl;
+    friend BasicJsonType;
+    friend iteration_proxy<iter_impl>;
+    friend iteration_proxy_value<iter_impl>;
+
+    using object_t = typename BasicJsonType::object_t;
+    using array_t = typename BasicJsonType::array_t;
+    // make sure BasicJsonType is basic_json or const basic_json
+    static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value,
+                  "iter_impl only accepts (const) basic_json");
+
+  public:
+
+    /// The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17.
+    /// The C++ Standard has never required user-defined iterators to derive from std::iterator.
+    /// A user-defined iterator should provide publicly accessible typedefs named
+    /// iterator_category, value_type, difference_type, pointer, and reference.
+    /// Note that value_type is required to be non-const, even for constant iterators.
+    using iterator_category = std::bidirectional_iterator_tag;
+
+    /// the type of the values when the iterator is dereferenced
+    using value_type = typename BasicJsonType::value_type;
+    /// a type to represent differences between iterators
+    using difference_type = typename BasicJsonType::difference_type;
+    /// defines a pointer to the type iterated over (value_type)
+    using pointer = typename std::conditional<std::is_const<BasicJsonType>::value,
+          typename BasicJsonType::const_pointer,
+          typename BasicJsonType::pointer>::type;
+    /// defines a reference to the type iterated over (value_type)
+    using reference =
+        typename std::conditional<std::is_const<BasicJsonType>::value,
+        typename BasicJsonType::const_reference,
+        typename BasicJsonType::reference>::type;
+
+    iter_impl() = default;
+    ~iter_impl() = default;
+    iter_impl(iter_impl&&) noexcept = default;
+    iter_impl& operator=(iter_impl&&) noexcept = default;
+
+    /*!
+    @brief constructor for a given JSON instance
+    @param[in] object  pointer to a JSON object for this iterator
+    @pre object != nullptr
+    @post The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    explicit iter_impl(pointer object) noexcept : m_object(object)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = typename object_t::iterator();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = typename array_t::iterator();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator = primitive_iterator_t();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @note The conventional copy constructor and copy assignment are implicitly
+          defined. Combined with the following converting constructor and
+          assignment, they support: (1) copy from iterator to iterator, (2)
+          copy from const iterator to const iterator, and (3) conversion from
+          iterator to const iterator. However conversion from const iterator
+          to iterator is not defined.
+    */
+
+    /*!
+    @brief const copy constructor
+    @param[in] other const iterator to copy from
+    @note This copy constructor had to be defined explicitly to circumvent a bug
+          occurring on msvc v19.0 compiler (VS 2015) debug build. For more
+          information refer to: https://github.com/nlohmann/json/issues/1608
+    */
+    iter_impl(const iter_impl<const BasicJsonType>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<const BasicJsonType>& other) noexcept
+    {
+        if (&other != this)
+        {
+            m_object = other.m_object;
+            m_it = other.m_it;
+        }
+        return *this;
+    }
+
+    /*!
+    @brief converting constructor
+    @param[in] other  non-const iterator to copy from
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other  non-const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept // NOLINT(cert-oop54-cpp)
+    {
+        m_object = other.m_object;
+        m_it = other.m_it;
+        return *this;
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief set the iterator to the first value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_begin() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_value.object->begin();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_value.array->begin();
+                break;
+            }
+
+            case value_t::null:
+            {
+                // set to end so begin()==end() is true: null is empty
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator.set_begin();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @brief set the iterator past the last value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_end() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_value.object->end();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_value.array->end();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+        }
+    }
+
+  public:
+    /*!
+    @brief return a reference to the value pointed to by the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator*() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_value.object->end());
+                return m_it.object_iterator->second;
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_value.array->end());
+                return *m_it.array_iterator;
+            }
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", *m_object));
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", *m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief dereference the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    pointer operator->() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_value.object->end());
+                return &(m_it.object_iterator->second);
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_value.array->end());
+                return &*m_it.array_iterator;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", *m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief post-increment (it++)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl const operator++(int) // NOLINT(readability-const-return-type)
+    {
+        auto result = *this;
+        ++(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-increment (++it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator++()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, 1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, 1);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                ++m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief post-decrement (it--)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl const operator--(int) // NOLINT(readability-const-return-type)
+    {
+        auto result = *this;
+        --(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-decrement (--it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator--()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, -1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, -1);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                --m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief comparison: equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    bool operator==(const IterImpl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", *m_object));
+        }
+
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                return (m_it.object_iterator == other.m_it.object_iterator);
+
+            case value_t::array:
+                return (m_it.array_iterator == other.m_it.array_iterator);
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return (m_it.primitive_iterator == other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief comparison: not equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    bool operator!=(const IterImpl& other) const
+    {
+        return !operator==(other);
+    }
+
+    /*!
+    @brief comparison: smaller
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator<(const iter_impl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", *m_object));
+        }
+
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(213, "cannot compare order of object iterators", *m_object));
+
+            case value_t::array:
+                return (m_it.array_iterator < other.m_it.array_iterator);
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return (m_it.primitive_iterator < other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief comparison: less than or equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator<=(const iter_impl& other) const
+    {
+        return !other.operator < (*this);
+    }
+
+    /*!
+    @brief comparison: greater than
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator>(const iter_impl& other) const
+    {
+        return !operator<=(other);
+    }
+
+    /*!
+    @brief comparison: greater than or equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator>=(const iter_impl& other) const
+    {
+        return !operator<(other);
+    }
+
+    /*!
+    @brief add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator+=(difference_type i)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", *m_object));
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, i);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator += i;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator-=(difference_type i)
+    {
+        return operator+=(-i);
+    }
+
+    /*!
+    @brief add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator+(difference_type i) const
+    {
+        auto result = *this;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief addition of distance and iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    friend iter_impl operator+(difference_type i, const iter_impl& it)
+    {
+        auto result = it;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator-(difference_type i) const
+    {
+        auto result = *this;
+        result -= i;
+        return result;
+    }
+
+    /*!
+    @brief return difference
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    difference_type operator-(const iter_impl& other) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", *m_object));
+
+            case value_t::array:
+                return m_it.array_iterator - other.m_it.array_iterator;
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return m_it.primitive_iterator - other.m_it.primitive_iterator;
+        }
+    }
+
+    /*!
+    @brief access to successor
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator[](difference_type n) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(208, "cannot use operator[] for object iterators", *m_object));
+
+            case value_t::array:
+                return *std::next(m_it.array_iterator, n);
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", *m_object));
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.get_value() == -n))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", *m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief return the key of an object iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    const typename object_t::key_type& key() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        if (JSON_HEDLEY_LIKELY(m_object->is_object()))
+        {
+            return m_it.object_iterator->first;
+        }
+
+        JSON_THROW(invalid_iterator::create(207, "cannot use key() for non-object iterators", *m_object));
+    }
+
+    /*!
+    @brief return the value of an iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference value() const
+    {
+        return operator*();
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /// associated JSON instance
+    pointer m_object = nullptr;
+    /// the actual iterator of the associated instance
+    internal_iterator<typename std::remove_const<BasicJsonType>::type> m_it {};
+};
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
+
+// #include <nlohmann/detail/iterators/json_reverse_iterator.hpp>
+
+
+#include <cstddef> // ptrdiff_t
+#include <iterator> // reverse_iterator
+#include <utility> // declval
+
+namespace nlohmann
+{
+namespace detail
+{
+//////////////////////
+// reverse_iterator //
+//////////////////////
+
+/*!
+@brief a template for a reverse iterator class
+
+@tparam Base the base iterator type to reverse. Valid types are @ref
+iterator (to create @ref reverse_iterator) and @ref const_iterator (to
+create @ref const_reverse_iterator).
+
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+- [OutputIterator](https://en.cppreference.com/w/cpp/named_req/OutputIterator):
+  It is possible to write to the pointed-to element (only if @a Base is
+  @ref iterator).
+
+@since version 1.0.0
+*/
+template<typename Base>
+class json_reverse_iterator : public std::reverse_iterator<Base>
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    /// shortcut to the reverse iterator adapter
+    using base_iterator = std::reverse_iterator<Base>;
+    /// the reference type for the pointed-to element
+    using reference = typename Base::reference;
+
+    /// create reverse iterator from iterator
+    explicit json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
+        : base_iterator(it) {}
+
+    /// create reverse iterator from base class
+    explicit json_reverse_iterator(const base_iterator& it) noexcept : base_iterator(it) {}
+
+    /// post-increment (it++)
+    json_reverse_iterator const operator++(int) // NOLINT(readability-const-return-type)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator++(1));
+    }
+
+    /// pre-increment (++it)
+    json_reverse_iterator& operator++()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator++());
+    }
+
+    /// post-decrement (it--)
+    json_reverse_iterator const operator--(int) // NOLINT(readability-const-return-type)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator--(1));
+    }
+
+    /// pre-decrement (--it)
+    json_reverse_iterator& operator--()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator--());
+    }
+
+    /// add to iterator
+    json_reverse_iterator& operator+=(difference_type i)
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator+=(i));
+    }
+
+    /// add to iterator
+    json_reverse_iterator operator+(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator+(i));
+    }
+
+    /// subtract from iterator
+    json_reverse_iterator operator-(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator-(i));
+    }
+
+    /// return difference
+    difference_type operator-(const json_reverse_iterator& other) const
+    {
+        return base_iterator(*this) - base_iterator(other);
+    }
+
+    /// access to successor
+    reference operator[](difference_type n) const
+    {
+        return *(this->operator+(n));
+    }
+
+    /// return the key of an object iterator
+    auto key() const -> decltype(std::declval<Base>().key())
+    {
+        auto it = --this->base();
+        return it.key();
+    }
+
+    /// return the value of an iterator
+    reference value() const
+    {
+        auto it = --this->base();
+        return it.operator * ();
+    }
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+// #include <nlohmann/detail/json_pointer.hpp>
+
+
+#include <algorithm> // all_of
+#include <cctype> // isdigit
+#include <limits> // max
+#include <numeric> // accumulate
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/string_escape.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+
+/// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+/// @sa https://json.nlohmann.me/api/json_pointer/
+template<typename BasicJsonType>
+class json_pointer
+{
+    // allow basic_json to access private members
+    NLOHMANN_BASIC_JSON_TPL_DECLARATION
+    friend class basic_json;
+
+  public:
+    /// @brief create JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/json_pointer/
+    explicit json_pointer(const std::string& s = "")
+        : reference_tokens(split(s))
+    {}
+
+    /// @brief return a string representation of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/to_string/
+    std::string to_string() const
+    {
+        return std::accumulate(reference_tokens.begin(), reference_tokens.end(),
+                               std::string{},
+                               [](const std::string & a, const std::string & b)
+        {
+            return a + "/" + detail::escape(b);
+        });
+    }
+
+    /// @brief return a string representation of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_string/
+    operator std::string() const
+    {
+        return to_string();
+    }
+
+    /// @brief append another JSON pointer at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(const json_pointer& ptr)
+    {
+        reference_tokens.insert(reference_tokens.end(),
+                                ptr.reference_tokens.begin(),
+                                ptr.reference_tokens.end());
+        return *this;
+    }
+
+    /// @brief append an unescaped reference token at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(std::string token)
+    {
+        push_back(std::move(token));
+        return *this;
+    }
+
+    /// @brief append an array index at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(std::size_t array_idx)
+    {
+        return *this /= std::to_string(array_idx);
+    }
+
+    /// @brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs,
+                                  const json_pointer& rhs)
+    {
+        return json_pointer(lhs) /= rhs;
+    }
+
+    /// @brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs, std::string token) // NOLINT(performance-unnecessary-value-param)
+    {
+        return json_pointer(lhs) /= std::move(token);
+    }
+
+    /// @brief create a new JSON pointer by appending the array-index-token at the end of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs, std::size_t array_idx)
+    {
+        return json_pointer(lhs) /= array_idx;
+    }
+
+    /// @brief returns the parent of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/parent_pointer/
+    json_pointer parent_pointer() const
+    {
+        if (empty())
+        {
+            return *this;
+        }
+
+        json_pointer res = *this;
+        res.pop_back();
+        return res;
+    }
+
+    /// @brief remove last reference token
+    /// @sa https://json.nlohmann.me/api/json_pointer/pop_back/
+    void pop_back()
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", BasicJsonType()));
+        }
+
+        reference_tokens.pop_back();
+    }
+
+    /// @brief return last reference token
+    /// @sa https://json.nlohmann.me/api/json_pointer/back/
+    const std::string& back() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", BasicJsonType()));
+        }
+
+        return reference_tokens.back();
+    }
+
+    /// @brief append an unescaped token at the end of the reference pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
+    void push_back(const std::string& token)
+    {
+        reference_tokens.push_back(token);
+    }
+
+    /// @brief append an unescaped token at the end of the reference pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
+    void push_back(std::string&& token)
+    {
+        reference_tokens.push_back(std::move(token));
+    }
+
+    /// @brief return whether pointer points to the root document
+    /// @sa https://json.nlohmann.me/api/json_pointer/empty/
+    bool empty() const noexcept
+    {
+        return reference_tokens.empty();
+    }
+
+  private:
+    /*!
+    @param[in] s  reference token to be converted into an array index
+
+    @return integer representation of @a s
+
+    @throw parse_error.106  if an array index begins with '0'
+    @throw parse_error.109  if an array index begins not with a digit
+    @throw out_of_range.404 if string @a s could not be converted to an integer
+    @throw out_of_range.410 if an array index exceeds size_type
+    */
+    static typename BasicJsonType::size_type array_index(const std::string& s)
+    {
+        using size_type = typename BasicJsonType::size_type;
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && s[0] == '0'))
+        {
+            JSON_THROW(detail::parse_error::create(106, 0, "array index '" + s + "' must not begin with '0'", BasicJsonType()));
+        }
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && !(s[0] >= '1' && s[0] <= '9')))
+        {
+            JSON_THROW(detail::parse_error::create(109, 0, "array index '" + s + "' is not a number", BasicJsonType()));
+        }
+
+        std::size_t processed_chars = 0;
+        unsigned long long res = 0;  // NOLINT(runtime/int)
+        JSON_TRY
+        {
+            res = std::stoull(s, &processed_chars);
+        }
+        JSON_CATCH(std::out_of_range&)
+        {
+            JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + s + "'", BasicJsonType()));
+        }
+
+        // check if the string was completely read
+        if (JSON_HEDLEY_UNLIKELY(processed_chars != s.size()))
+        {
+            JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + s + "'", BasicJsonType()));
+        }
+
+        // only triggered on special platforms (like 32bit), see also
+        // https://github.com/nlohmann/json/pull/2203
+        if (res >= static_cast<unsigned long long>((std::numeric_limits<size_type>::max)()))  // NOLINT(runtime/int)
+        {
+            JSON_THROW(detail::out_of_range::create(410, "array index " + s + " exceeds size_type", BasicJsonType())); // LCOV_EXCL_LINE
+        }
+
+        return static_cast<size_type>(res);
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    json_pointer top() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", BasicJsonType()));
+        }
+
+        json_pointer result = *this;
+        result.reference_tokens = {reference_tokens[0]};
+        return result;
+    }
+
+  private:
+    /*!
+    @brief create and return a reference to the pointed to value
+
+    @complexity Linear in the number of reference tokens.
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.313 if value cannot be unflattened
+    */
+    BasicJsonType& get_and_create(BasicJsonType& j) const
+    {
+        auto* result = &j;
+
+        // in case no reference tokens exist, return a reference to the JSON value
+        // j which will be overwritten by a primitive value
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (result->type())
+            {
+                case detail::value_t::null:
+                {
+                    if (reference_token == "0")
+                    {
+                        // start a new array if reference token is 0
+                        result = &result->operator[](0);
+                    }
+                    else
+                    {
+                        // start a new object otherwise
+                        result = &result->operator[](reference_token);
+                    }
+                    break;
+                }
+
+                case detail::value_t::object:
+                {
+                    // create an entry in the object
+                    result = &result->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    // create an entry in the array
+                    result = &result->operator[](array_index(reference_token));
+                    break;
+                }
+
+                /*
+                The following code is only reached if there exists a reference
+                token _and_ the current value is primitive. In this case, we have
+                an error situation, because primitive values may only occur as
+                single value; that is, with an empty list of reference tokens.
+                */
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::type_error::create(313, "invalid value to unflatten", j));
+            }
+        }
+
+        return *result;
+    }
+
+    /*!
+    @brief return a reference to the pointed to value
+
+    @note This version does not throw if a value is not present, but tries to
+          create nested values instead. For instance, calling this function
+          with pointer `"/this/that"` on a null value is equivalent to calling
+          `operator[]("this").operator[]("that")` on that value, effectively
+          changing the null value to an object.
+
+    @param[in] ptr  a JSON value
+
+    @return reference to the JSON value pointed to by the JSON pointer
+
+    @complexity Linear in the length of the JSON pointer.
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    BasicJsonType& get_unchecked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            // convert null values to arrays or objects before continuing
+            if (ptr->is_null())
+            {
+                // check if reference token is a number
+                const bool nums =
+                    std::all_of(reference_token.begin(), reference_token.end(),
+                                [](const unsigned char x)
+                {
+                    return std::isdigit(x);
+                });
+
+                // change value to array for numbers or "-" or to object otherwise
+                *ptr = (nums || reference_token == "-")
+                       ? detail::value_t::array
+                       : detail::value_t::object;
+            }
+
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (reference_token == "-")
+                    {
+                        // explicitly treat "-" as index beyond the end
+                        ptr = &ptr->operator[](ptr->m_value.array->size());
+                    }
+                    else
+                    {
+                        // convert array index to number; unchecked access
+                        ptr = &ptr->operator[](array_index(reference_token));
+                    }
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + reference_token + "'", *ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    BasicJsonType& get_checked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402,
+                                                                "array index '-' (" + std::to_string(ptr->m_value.array->size()) +
+                                                                ") is out of range", *ptr));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + reference_token + "'", *ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @brief return a const reference to the pointed to value
+
+    @param[in] ptr  a JSON value
+
+    @return const reference to the JSON value pointed to by the JSON
+    pointer
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    const BasicJsonType& get_unchecked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" cannot be used for const access
+                        JSON_THROW(detail::out_of_range::create(402, "array index '-' (" + std::to_string(ptr->m_value.array->size()) + ") is out of range", *ptr));
+                    }
+
+                    // use unchecked array access
+                    ptr = &ptr->operator[](array_index(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + reference_token + "'", *ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    const BasicJsonType& get_checked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402,
+                                                                "array index '-' (" + std::to_string(ptr->m_value.array->size()) +
+                                                                ") is out of range", *ptr));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, "unresolved reference token '" + reference_token + "'", *ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    */
+    bool contains(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    if (!ptr->contains(reference_token))
+                    {
+                        // we did not find the key in the object
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() == 1 && !("0" <= reference_token && reference_token <= "9")))
+                    {
+                        // invalid char
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() > 1))
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!('1' <= reference_token[0] && reference_token[0] <= '9')))
+                        {
+                            // first char should be between '1' and '9'
+                            return false;
+                        }
+                        for (std::size_t i = 1; i < reference_token.size(); i++)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!('0' <= reference_token[i] && reference_token[i] <= '9')))
+                            {
+                                // other char should be between '0' and '9'
+                                return false;
+                            }
+                        }
+                    }
+
+                    const auto idx = array_index(reference_token);
+                    if (idx >= ptr->size())
+                    {
+                        // index out of range
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](idx);
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                {
+                    // we do not expect primitive values if there is still a
+                    // reference token to process
+                    return false;
+                }
+            }
+        }
+
+        // no reference token left means we found a primitive value
+        return true;
+    }
+
+    /*!
+    @brief split the string input to reference tokens
+
+    @note This function is only called by the json_pointer constructor.
+          All exceptions below are documented there.
+
+    @throw parse_error.107  if the pointer is not empty or begins with '/'
+    @throw parse_error.108  if character '~' is not followed by '0' or '1'
+    */
+    static std::vector<std::string> split(const std::string& reference_string)
+    {
+        std::vector<std::string> result;
+
+        // special case: empty reference string -> no reference tokens
+        if (reference_string.empty())
+        {
+            return result;
+        }
+
+        // check if nonempty reference string begins with slash
+        if (JSON_HEDLEY_UNLIKELY(reference_string[0] != '/'))
+        {
+            JSON_THROW(detail::parse_error::create(107, 1, "JSON pointer must be empty or begin with '/' - was: '" + reference_string + "'", BasicJsonType()));
+        }
+
+        // extract the reference tokens:
+        // - slash: position of the last read slash (or end of string)
+        // - start: position after the previous slash
+        for (
+            // search for the first slash after the first character
+            std::size_t slash = reference_string.find_first_of('/', 1),
+            // set the beginning of the first reference token
+            start = 1;
+            // we can stop if start == 0 (if slash == std::string::npos)
+            start != 0;
+            // set the beginning of the next reference token
+            // (will eventually be 0 if slash == std::string::npos)
+            start = (slash == std::string::npos) ? 0 : slash + 1,
+            // find next slash
+            slash = reference_string.find_first_of('/', start))
+        {
+            // use the text between the beginning of the reference token
+            // (start) and the last slash (slash).
+            auto reference_token = reference_string.substr(start, slash - start);
+
+            // check reference tokens are properly escaped
+            for (std::size_t pos = reference_token.find_first_of('~');
+                    pos != std::string::npos;
+                    pos = reference_token.find_first_of('~', pos + 1))
+            {
+                JSON_ASSERT(reference_token[pos] == '~');
+
+                // ~ must be followed by 0 or 1
+                if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 ||
+                                         (reference_token[pos + 1] != '0' &&
+                                          reference_token[pos + 1] != '1')))
+                {
+                    JSON_THROW(detail::parse_error::create(108, 0, "escape character '~' must be followed with '0' or '1'", BasicJsonType()));
+                }
+            }
+
+            // finally, store the reference token
+            detail::unescape(reference_token);
+            result.push_back(reference_token);
+        }
+
+        return result;
+    }
+
+  private:
+    /*!
+    @param[in] reference_string  the reference string to the current value
+    @param[in] value             the value to consider
+    @param[in,out] result        the result object to insert values to
+
+    @note Empty objects or arrays are flattened to `null`.
+    */
+    static void flatten(const std::string& reference_string,
+                        const BasicJsonType& value,
+                        BasicJsonType& result)
+    {
+        switch (value.type())
+        {
+            case detail::value_t::array:
+            {
+                if (value.m_value.array->empty())
+                {
+                    // flatten empty array as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate array and use index as reference string
+                    for (std::size_t i = 0; i < value.m_value.array->size(); ++i)
+                    {
+                        flatten(reference_string + "/" + std::to_string(i),
+                                value.m_value.array->operator[](i), result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::object:
+            {
+                if (value.m_value.object->empty())
+                {
+                    // flatten empty object as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate object and use keys as reference string
+                    for (const auto& element : *value.m_value.object)
+                    {
+                        flatten(reference_string + "/" + detail::escape(element.first), element.second, result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::null:
+            case detail::value_t::string:
+            case detail::value_t::boolean:
+            case detail::value_t::number_integer:
+            case detail::value_t::number_unsigned:
+            case detail::value_t::number_float:
+            case detail::value_t::binary:
+            case detail::value_t::discarded:
+            default:
+            {
+                // add primitive value with its reference string
+                result[reference_string] = value;
+                break;
+            }
+        }
+    }
+
+    /*!
+    @param[in] value  flattened JSON
+
+    @return unflattened JSON
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.314  if value is not an object
+    @throw type_error.315  if object values are not primitive
+    @throw type_error.313  if value cannot be unflattened
+    */
+    static BasicJsonType
+    unflatten(const BasicJsonType& value)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!value.is_object()))
+        {
+            JSON_THROW(detail::type_error::create(314, "only objects can be unflattened", value));
+        }
+
+        BasicJsonType result;
+
+        // iterate the JSON object values
+        for (const auto& element : *value.m_value.object)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!element.second.is_primitive()))
+            {
+                JSON_THROW(detail::type_error::create(315, "values in object must be primitive", element.second));
+            }
+
+            // assign value to reference pointed to by JSON pointer; Note that if
+            // the JSON pointer is "" (i.e., points to the whole value), function
+            // get_and_create returns a reference to result itself. An assignment
+            // will then create a primitive value.
+            json_pointer(element.first).get_and_create(result) = element.second;
+        }
+
+        return result;
+    }
+
+    /*!
+    @brief compares two JSON pointers for equality
+
+    @param[in] lhs  JSON pointer to compare
+    @param[in] rhs  JSON pointer to compare
+    @return whether @a lhs is equal to @a rhs
+
+    @complexity Linear in the length of the JSON pointer
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+    */
+    friend bool operator==(json_pointer const& lhs,
+                           json_pointer const& rhs) noexcept
+    {
+        return lhs.reference_tokens == rhs.reference_tokens;
+    }
+
+    /*!
+    @brief compares two JSON pointers for inequality
+
+    @param[in] lhs  JSON pointer to compare
+    @param[in] rhs  JSON pointer to compare
+    @return whether @a lhs is not equal @a rhs
+
+    @complexity Linear in the length of the JSON pointer
+
+    @exceptionsafety No-throw guarantee: this function never throws exceptions.
+    */
+    friend bool operator!=(json_pointer const& lhs,
+                           json_pointer const& rhs) noexcept
+    {
+        return !(lhs == rhs);
+    }
+
+    /// the reference tokens
+    std::vector<std::string> reference_tokens;
+};
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/json_ref.hpp>
+
+
+#include <initializer_list>
+#include <utility>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+template<typename BasicJsonType>
+class json_ref
+{
+  public:
+    using value_type = BasicJsonType;
+
+    json_ref(value_type&& value)
+        : owned_value(std::move(value))
+    {}
+
+    json_ref(const value_type& value)
+        : value_ref(&value)
+    {}
+
+    json_ref(std::initializer_list<json_ref> init)
+        : owned_value(init)
+    {}
+
+    template <
+        class... Args,
+        enable_if_t<std::is_constructible<value_type, Args...>::value, int> = 0 >
+    json_ref(Args && ... args)
+        : owned_value(std::forward<Args>(args)...)
+    {}
+
+    // class should be movable only
+    json_ref(json_ref&&) noexcept = default;
+    json_ref(const json_ref&) = delete;
+    json_ref& operator=(const json_ref&) = delete;
+    json_ref& operator=(json_ref&&) = delete;
+    ~json_ref() = default;
+
+    value_type moved_or_copied() const
+    {
+        if (value_ref == nullptr)
+        {
+            return std::move(owned_value);
+        }
+        return *value_ref;
+    }
+
+    value_type const& operator*() const
+    {
+        return value_ref ? *value_ref : owned_value;
+    }
+
+    value_type const* operator->() const
+    {
+        return &** this;
+    }
+
+  private:
+    mutable value_type owned_value = nullptr;
+    value_type const* value_ref = nullptr;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/string_escape.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/output/binary_writer.hpp>
+
+
+#include <algorithm> // reverse
+#include <array> // array
+#include <cmath> // isnan, isinf
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstring> // memcpy
+#include <limits> // numeric_limits
+#include <string> // string
+#include <utility> // move
+
+// #include <nlohmann/detail/input/binary_reader.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+
+#include <algorithm> // copy
+#include <cstddef> // size_t
+#include <iterator> // back_inserter
+#include <memory> // shared_ptr, make_shared
+#include <string> // basic_string
+#include <vector> // vector
+
+#ifndef JSON_NO_IO
+    #include <ios>      // streamsize
+    #include <ostream>  // basic_ostream
+#endif  // JSON_NO_IO
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+/// abstract output adapter interface
+template<typename CharType> struct output_adapter_protocol
+{
+    virtual void write_character(CharType c) = 0;
+    virtual void write_characters(const CharType* s, std::size_t length) = 0;
+    virtual ~output_adapter_protocol() = default;
+
+    output_adapter_protocol() = default;
+    output_adapter_protocol(const output_adapter_protocol&) = default;
+    output_adapter_protocol(output_adapter_protocol&&) noexcept = default;
+    output_adapter_protocol& operator=(const output_adapter_protocol&) = default;
+    output_adapter_protocol& operator=(output_adapter_protocol&&) noexcept = default;
+};
+
+/// a type to simplify interfaces
+template<typename CharType>
+using output_adapter_t = std::shared_ptr<output_adapter_protocol<CharType>>;
+
+/// output adapter for byte vectors
+template<typename CharType, typename AllocatorType = std::allocator<CharType>>
+class output_vector_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_vector_adapter(std::vector<CharType, AllocatorType>& vec) noexcept
+        : v(vec)
+    {}
+
+    void write_character(CharType c) override
+    {
+        v.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        std::copy(s, s + length, std::back_inserter(v));
+    }
+
+  private:
+    std::vector<CharType, AllocatorType>& v;
+};
+
+#ifndef JSON_NO_IO
+/// output adapter for output streams
+template<typename CharType>
+class output_stream_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_stream_adapter(std::basic_ostream<CharType>& s) noexcept
+        : stream(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        stream.put(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        stream.write(s, static_cast<std::streamsize>(length));
+    }
+
+  private:
+    std::basic_ostream<CharType>& stream;
+};
+#endif  // JSON_NO_IO
+
+/// output adapter for basic_string
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_string_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_string_adapter(StringType& s) noexcept
+        : str(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        str.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        str.append(s, length);
+    }
+
+  private:
+    StringType& str;
+};
+
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_adapter
+{
+  public:
+    template<typename AllocatorType = std::allocator<CharType>>
+    output_adapter(std::vector<CharType, AllocatorType>& vec)
+        : oa(std::make_shared<output_vector_adapter<CharType, AllocatorType>>(vec)) {}
+
+#ifndef JSON_NO_IO
+    output_adapter(std::basic_ostream<CharType>& s)
+        : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
+#endif  // JSON_NO_IO
+
+    output_adapter(StringType& s)
+        : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {}
+
+    operator output_adapter_t<CharType>()
+    {
+        return oa;
+    }
+
+  private:
+    output_adapter_t<CharType> oa = nullptr;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+
+namespace nlohmann
+{
+namespace detail
+{
+///////////////////
+// binary writer //
+///////////////////
+
+/*!
+@brief serialization to CBOR and MessagePack values
+*/
+template<typename BasicJsonType, typename CharType>
+class binary_writer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+  public:
+    /*!
+    @brief create a binary writer
+
+    @param[in] adapter  output adapter to write to
+    */
+    explicit binary_writer(output_adapter_t<CharType> adapter) : oa(std::move(adapter))
+    {
+        JSON_ASSERT(oa);
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @pre       j.type() == value_t::object
+    */
+    void write_bson(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+            {
+                write_bson_object(*j.m_value.object);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::array:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                JSON_THROW(type_error::create(317, "to serialize to BSON, top-level type must be object, but is " + std::string(j.type_name()), j));
+            }
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_cbor(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                oa->write_character(to_char_type(0xF6));
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                oa->write_character(j.m_value.boolean
+                                    ? to_char_type(0xF5)
+                                    : to_char_type(0xF4));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_value.number_integer >= 0)
+                {
+                    // CBOR does not differentiate between positive signed
+                    // integers and unsigned integers. Therefore, we used the
+                    // code from the value_t::number_unsigned case here.
+                    if (j.m_value.number_integer <= 0x17)
+                    {
+                        write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x18));
+                        write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x19));
+                        write_number(static_cast<std::uint16_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x1A));
+                        write_number(static_cast<std::uint32_t>(j.m_value.number_integer));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x1B));
+                        write_number(static_cast<std::uint64_t>(j.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    // The conversions below encode the sign in the first
+                    // byte, and the value is converted to a positive number.
+                    const auto positive_number = -1 - j.m_value.number_integer;
+                    if (j.m_value.number_integer >= -24)
+                    {
+                        write_number(static_cast<std::uint8_t>(0x20 + positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x38));
+                        write_number(static_cast<std::uint8_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x39));
+                        write_number(static_cast<std::uint16_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x3A));
+                        write_number(static_cast<std::uint32_t>(positive_number));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x3B));
+                        write_number(static_cast<std::uint64_t>(positive_number));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_value.number_unsigned <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(j.m_value.number_unsigned));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x18));
+                    write_number(static_cast<std::uint8_t>(j.m_value.number_unsigned));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x19));
+                    write_number(static_cast<std::uint16_t>(j.m_value.number_unsigned));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x1A));
+                    write_number(static_cast<std::uint32_t>(j.m_value.number_unsigned));
+                }
+                else
+                {
+                    oa->write_character(to_char_type(0x1B));
+                    write_number(static_cast<std::uint64_t>(j.m_value.number_unsigned));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                if (std::isnan(j.m_value.number_float))
+                {
+                    // NaN is 0xf97e00 in CBOR
+                    oa->write_character(to_char_type(0xF9));
+                    oa->write_character(to_char_type(0x7E));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else if (std::isinf(j.m_value.number_float))
+                {
+                    // Infinity is 0xf97c00, -Infinity is 0xf9fc00
+                    oa->write_character(to_char_type(0xf9));
+                    oa->write_character(j.m_value.number_float > 0 ? to_char_type(0x7C) : to_char_type(0xFC));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else
+                {
+                    write_compact_float(j.m_value.number_float, detail::input_format_t::cbor);
+                }
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_value.string->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x60 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x78));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x79));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
+                    j.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_value.array->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x80 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x98));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x99));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_value.array)
+                {
+                    write_cbor(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (j.m_value.binary->has_subtype())
+                {
+                    if (j.m_value.binary->subtype() <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xd8));
+                        write_number(static_cast<std::uint8_t>(j.m_value.binary->subtype()));
+                    }
+                    else if (j.m_value.binary->subtype() <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xd9));
+                        write_number(static_cast<std::uint16_t>(j.m_value.binary->subtype()));
+                    }
+                    else if (j.m_value.binary->subtype() <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xda));
+                        write_number(static_cast<std::uint32_t>(j.m_value.binary->subtype()));
+                    }
+                    else if (j.m_value.binary->subtype() <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xdb));
+                        write_number(static_cast<std::uint64_t>(j.m_value.binary->subtype()));
+                    }
+                }
+
+                // step 1: write control byte and the binary array size
+                const auto N = j.m_value.binary->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x40 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x58));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x59));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_value.object->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0xA0 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB8));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB9));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBA));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBB));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_value.object)
+                {
+                    write_cbor(el.first);
+                    write_cbor(el.second);
+                }
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_msgpack(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null: // nil
+            {
+                oa->write_character(to_char_type(0xC0));
+                break;
+            }
+
+            case value_t::boolean: // true and false
+            {
+                oa->write_character(j.m_value.boolean
+                                    ? to_char_type(0xC3)
+                                    : to_char_type(0xC2));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_value.number_integer >= 0)
+                {
+                    // MessagePack does not differentiate between positive
+                    // signed integers and unsigned integers. Therefore, we used
+                    // the code from the value_t::number_unsigned case here.
+                    if (j.m_value.number_unsigned < 128)
+                    {
+                        // positive fixnum
+                        write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        // uint 8
+                        oa->write_character(to_char_type(0xCC));
+                        write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        // uint 16
+                        oa->write_character(to_char_type(0xCD));
+                        write_number(static_cast<std::uint16_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        // uint 32
+                        oa->write_character(to_char_type(0xCE));
+                        write_number(static_cast<std::uint32_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        // uint 64
+                        oa->write_character(to_char_type(0xCF));
+                        write_number(static_cast<std::uint64_t>(j.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    if (j.m_value.number_integer >= -32)
+                    {
+                        // negative fixnum
+                        write_number(static_cast<std::int8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer >= (std::numeric_limits<std::int8_t>::min)() &&
+                             j.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                    {
+                        // int 8
+                        oa->write_character(to_char_type(0xD0));
+                        write_number(static_cast<std::int8_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer >= (std::numeric_limits<std::int16_t>::min)() &&
+                             j.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                    {
+                        // int 16
+                        oa->write_character(to_char_type(0xD1));
+                        write_number(static_cast<std::int16_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer >= (std::numeric_limits<std::int32_t>::min)() &&
+                             j.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                    {
+                        // int 32
+                        oa->write_character(to_char_type(0xD2));
+                        write_number(static_cast<std::int32_t>(j.m_value.number_integer));
+                    }
+                    else if (j.m_value.number_integer >= (std::numeric_limits<std::int64_t>::min)() &&
+                             j.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                    {
+                        // int 64
+                        oa->write_character(to_char_type(0xD3));
+                        write_number(static_cast<std::int64_t>(j.m_value.number_integer));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_value.number_unsigned < 128)
+                {
+                    // positive fixnum
+                    write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // uint 8
+                    oa->write_character(to_char_type(0xCC));
+                    write_number(static_cast<std::uint8_t>(j.m_value.number_integer));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // uint 16
+                    oa->write_character(to_char_type(0xCD));
+                    write_number(static_cast<std::uint16_t>(j.m_value.number_integer));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // uint 32
+                    oa->write_character(to_char_type(0xCE));
+                    write_number(static_cast<std::uint32_t>(j.m_value.number_integer));
+                }
+                else if (j.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    // uint 64
+                    oa->write_character(to_char_type(0xCF));
+                    write_number(static_cast<std::uint64_t>(j.m_value.number_integer));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_compact_float(j.m_value.number_float, detail::input_format_t::msgpack);
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_value.string->size();
+                if (N <= 31)
+                {
+                    // fixstr
+                    write_number(static_cast<std::uint8_t>(0xA0 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // str 8
+                    oa->write_character(to_char_type(0xD9));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // str 16
+                    oa->write_character(to_char_type(0xDA));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // str 32
+                    oa->write_character(to_char_type(0xDB));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
+                    j.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_value.array->size();
+                if (N <= 15)
+                {
+                    // fixarray
+                    write_number(static_cast<std::uint8_t>(0x90 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // array 16
+                    oa->write_character(to_char_type(0xDC));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // array 32
+                    oa->write_character(to_char_type(0xDD));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_value.array)
+                {
+                    write_msgpack(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                // step 0: determine if the binary type has a set subtype to
+                // determine whether or not to use the ext or fixext types
+                const bool use_ext = j.m_value.binary->has_subtype();
+
+                // step 1: write control byte and the byte string length
+                const auto N = j.m_value.binary->size();
+                if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    std::uint8_t output_type{};
+                    bool fixed = true;
+                    if (use_ext)
+                    {
+                        switch (N)
+                        {
+                            case 1:
+                                output_type = 0xD4; // fixext 1
+                                break;
+                            case 2:
+                                output_type = 0xD5; // fixext 2
+                                break;
+                            case 4:
+                                output_type = 0xD6; // fixext 4
+                                break;
+                            case 8:
+                                output_type = 0xD7; // fixext 8
+                                break;
+                            case 16:
+                                output_type = 0xD8; // fixext 16
+                                break;
+                            default:
+                                output_type = 0xC7; // ext 8
+                                fixed = false;
+                                break;
+                        }
+
+                    }
+                    else
+                    {
+                        output_type = 0xC4; // bin 8
+                        fixed = false;
+                    }
+
+                    oa->write_character(to_char_type(output_type));
+                    if (!fixed)
+                    {
+                        write_number(static_cast<std::uint8_t>(N));
+                    }
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    std::uint8_t output_type = use_ext
+                                               ? 0xC8 // ext 16
+                                               : 0xC5; // bin 16
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    std::uint8_t output_type = use_ext
+                                               ? 0xC9 // ext 32
+                                               : 0xC6; // bin 32
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 1.5: if this is an ext type, write the subtype
+                if (use_ext)
+                {
+                    write_number(static_cast<std::int8_t>(j.m_value.binary->subtype()));
+                }
+
+                // step 2: write the byte string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_value.object->size();
+                if (N <= 15)
+                {
+                    // fixmap
+                    write_number(static_cast<std::uint8_t>(0x80 | (N & 0xF)));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // map 16
+                    oa->write_character(to_char_type(0xDE));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // map 32
+                    oa->write_character(to_char_type(0xDF));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_value.object)
+                {
+                    write_msgpack(el.first);
+                    write_msgpack(el.second);
+                }
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @param[in] use_count   whether to use '#' prefixes (optimized format)
+    @param[in] use_type    whether to use '$' prefixes (optimized format)
+    @param[in] add_prefix  whether prefixes need to be used for this value
+    */
+    void write_ubjson(const BasicJsonType& j, const bool use_count,
+                      const bool use_type, const bool add_prefix = true)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('Z'));
+                }
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(j.m_value.boolean
+                                        ? to_char_type('T')
+                                        : to_char_type('F'));
+                }
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                write_number_with_ubjson_prefix(j.m_value.number_integer, add_prefix);
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                write_number_with_ubjson_prefix(j.m_value.number_unsigned, add_prefix);
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_number_with_ubjson_prefix(j.m_value.number_float, add_prefix);
+                break;
+            }
+
+            case value_t::string:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('S'));
+                }
+                write_number_with_ubjson_prefix(j.m_value.string->size(), true);
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
+                    j.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_value.array->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front());
+                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(),
+                                                         [this, first_prefix](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v) == first_prefix;
+                    });
+
+                    if (same_prefix)
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_value.array->size(), true);
+                }
+
+                for (const auto& el : *j.m_value.array)
+                {
+                    write_ubjson(el, use_count, use_type, prefix_required);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                if (use_type && !j.m_value.binary->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    oa->write_character(to_char_type('$'));
+                    oa->write_character('U');
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_value.binary->size(), true);
+                }
+
+                if (use_type)
+                {
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(j.m_value.binary->data()),
+                        j.m_value.binary->size());
+                }
+                else
+                {
+                    for (size_t i = 0; i < j.m_value.binary->size(); ++i)
+                    {
+                        oa->write_character(to_char_type('U'));
+                        oa->write_character(j.m_value.binary->data()[i]);
+                    }
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('{'));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_value.object->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front());
+                    const bool same_prefix = std::all_of(j.begin(), j.end(),
+                                                         [this, first_prefix](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v) == first_prefix;
+                    });
+
+                    if (same_prefix)
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_value.object->size(), true);
+                }
+
+                for (const auto& el : *j.m_value.object)
+                {
+                    write_number_with_ubjson_prefix(el.first.size(), true);
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(el.first.c_str()),
+                        el.first.size());
+                    write_ubjson(el.second, use_count, use_type, prefix_required);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type('}'));
+                }
+
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @return The size of a BSON document entry header, including the id marker
+            and the entry name size (and its null-terminator).
+    */
+    static std::size_t calc_bson_entry_header_size(const string_t& name, const BasicJsonType& j)
+    {
+        const auto it = name.find(static_cast<typename string_t::value_type>(0));
+        if (JSON_HEDLEY_UNLIKELY(it != BasicJsonType::string_t::npos))
+        {
+            JSON_THROW(out_of_range::create(409, "BSON key cannot contain code point U+0000 (at byte " + std::to_string(it) + ")", j));
+            static_cast<void>(j);
+        }
+
+        return /*id*/ 1ul + name.size() + /*zero-terminator*/1u;
+    }
+
+    /*!
+    @brief Writes the given @a element_type and @a name to the output adapter
+    */
+    void write_bson_entry_header(const string_t& name,
+                                 const std::uint8_t element_type)
+    {
+        oa->write_character(to_char_type(element_type)); // boolean
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(name.c_str()),
+            name.size() + 1u);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and boolean value @a value
+    */
+    void write_bson_boolean(const string_t& name,
+                            const bool value)
+    {
+        write_bson_entry_header(name, 0x08);
+        oa->write_character(value ? to_char_type(0x01) : to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and double value @a value
+    */
+    void write_bson_double(const string_t& name,
+                           const double value)
+    {
+        write_bson_entry_header(name, 0x01);
+        write_number<double, true>(value);
+    }
+
+    /*!
+    @return The size of the BSON-encoded string in @a value
+    */
+    static std::size_t calc_bson_string_size(const string_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and string value @a value
+    */
+    void write_bson_string(const string_t& name,
+                           const string_t& value)
+    {
+        write_bson_entry_header(name, 0x02);
+
+        write_number<std::int32_t, true>(static_cast<std::int32_t>(value.size() + 1ul));
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(value.c_str()),
+            value.size() + 1);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and null value
+    */
+    void write_bson_null(const string_t& name)
+    {
+        write_bson_entry_header(name, 0x0A);
+    }
+
+    /*!
+    @return The size of the BSON-encoded integer @a value
+    */
+    static std::size_t calc_bson_integer_size(const std::int64_t value)
+    {
+        return (std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)()
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and integer @a value
+    */
+    void write_bson_integer(const string_t& name,
+                            const std::int64_t value)
+    {
+        if ((std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            write_bson_entry_header(name, 0x10); // int32
+            write_number<std::int32_t, true>(static_cast<std::int32_t>(value));
+        }
+        else
+        {
+            write_bson_entry_header(name, 0x12); // int64
+            write_number<std::int64_t, true>(static_cast<std::int64_t>(value));
+        }
+    }
+
+    /*!
+    @return The size of the BSON-encoded unsigned integer in @a j
+    */
+    static constexpr std::size_t calc_bson_unsigned_size(const std::uint64_t value) noexcept
+    {
+        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and unsigned @a value
+    */
+    void write_bson_unsigned(const string_t& name,
+                             const BasicJsonType& j)
+    {
+        if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x10 /* int32 */);
+            write_number<std::int32_t, true>(static_cast<std::int32_t>(j.m_value.number_unsigned));
+        }
+        else if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x12 /* int64 */);
+            write_number<std::int64_t, true>(static_cast<std::int64_t>(j.m_value.number_unsigned));
+        }
+        else
+        {
+            JSON_THROW(out_of_range::create(407, "integer number " + std::to_string(j.m_value.number_unsigned) + " cannot be represented by BSON as it does not fit int64", j));
+        }
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and object @a value
+    */
+    void write_bson_object_entry(const string_t& name,
+                                 const typename BasicJsonType::object_t& value)
+    {
+        write_bson_entry_header(name, 0x03); // object
+        write_bson_object(value);
+    }
+
+    /*!
+    @return The size of the BSON-encoded array @a value
+    */
+    static std::size_t calc_bson_array_size(const typename BasicJsonType::array_t& value)
+    {
+        std::size_t array_index = 0ul;
+
+        const std::size_t embedded_document_size = std::accumulate(std::begin(value), std::end(value), static_cast<std::size_t>(0), [&array_index](std::size_t result, const typename BasicJsonType::array_t::value_type & el)
+        {
+            return result + calc_bson_element_size(std::to_string(array_index++), el);
+        });
+
+        return sizeof(std::int32_t) + embedded_document_size + 1ul;
+    }
+
+    /*!
+    @return The size of the BSON-encoded binary array @a value
+    */
+    static std::size_t calc_bson_binary_size(const typename BasicJsonType::binary_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and array @a value
+    */
+    void write_bson_array(const string_t& name,
+                          const typename BasicJsonType::array_t& value)
+    {
+        write_bson_entry_header(name, 0x04); // array
+        write_number<std::int32_t, true>(static_cast<std::int32_t>(calc_bson_array_size(value)));
+
+        std::size_t array_index = 0ul;
+
+        for (const auto& el : value)
+        {
+            write_bson_element(std::to_string(array_index++), el);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and binary value @a value
+    */
+    void write_bson_binary(const string_t& name,
+                           const binary_t& value)
+    {
+        write_bson_entry_header(name, 0x05);
+
+        write_number<std::int32_t, true>(static_cast<std::int32_t>(value.size()));
+        write_number(value.has_subtype() ? static_cast<std::uint8_t>(value.subtype()) : static_cast<std::uint8_t>(0x00));
+
+        oa->write_characters(reinterpret_cast<const CharType*>(value.data()), value.size());
+    }
+
+    /*!
+    @brief Calculates the size necessary to serialize the JSON value @a j with its @a name
+    @return The calculated size for the BSON document entry for @a j with the given @a name.
+    */
+    static std::size_t calc_bson_element_size(const string_t& name,
+            const BasicJsonType& j)
+    {
+        const auto header_size = calc_bson_entry_header_size(name, j);
+        switch (j.type())
+        {
+            case value_t::object:
+                return header_size + calc_bson_object_size(*j.m_value.object);
+
+            case value_t::array:
+                return header_size + calc_bson_array_size(*j.m_value.array);
+
+            case value_t::binary:
+                return header_size + calc_bson_binary_size(*j.m_value.binary);
+
+            case value_t::boolean:
+                return header_size + 1ul;
+
+            case value_t::number_float:
+                return header_size + 8ul;
+
+            case value_t::number_integer:
+                return header_size + calc_bson_integer_size(j.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return header_size + calc_bson_unsigned_size(j.m_value.number_unsigned);
+
+            case value_t::string:
+                return header_size + calc_bson_string_size(*j.m_value.string);
+
+            case value_t::null:
+                return header_size + 0ul;
+
+            // LCOV_EXCL_START
+            case value_t::discarded:
+            default:
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
+                return 0ul;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Serializes the JSON value @a j to BSON and associates it with the
+           key @a name.
+    @param name The name to associate with the JSON entity @a j within the
+                current BSON document
+    */
+    void write_bson_element(const string_t& name,
+                            const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+                return write_bson_object_entry(name, *j.m_value.object);
+
+            case value_t::array:
+                return write_bson_array(name, *j.m_value.array);
+
+            case value_t::binary:
+                return write_bson_binary(name, *j.m_value.binary);
+
+            case value_t::boolean:
+                return write_bson_boolean(name, j.m_value.boolean);
+
+            case value_t::number_float:
+                return write_bson_double(name, j.m_value.number_float);
+
+            case value_t::number_integer:
+                return write_bson_integer(name, j.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return write_bson_unsigned(name, j);
+
+            case value_t::string:
+                return write_bson_string(name, *j.m_value.string);
+
+            case value_t::null:
+                return write_bson_null(name);
+
+            // LCOV_EXCL_START
+            case value_t::discarded:
+            default:
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
+                return;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Calculates the size of the BSON serialization of the given
+           JSON-object @a j.
+    @param[in] value  JSON value to serialize
+    @pre       value.type() == value_t::object
+    */
+    static std::size_t calc_bson_object_size(const typename BasicJsonType::object_t& value)
+    {
+        std::size_t document_size = std::accumulate(value.begin(), value.end(), static_cast<std::size_t>(0),
+                                    [](size_t result, const typename BasicJsonType::object_t::value_type & el)
+        {
+            return result += calc_bson_element_size(el.first, el.second);
+        });
+
+        return sizeof(std::int32_t) + document_size + 1ul;
+    }
+
+    /*!
+    @param[in] value  JSON value to serialize
+    @pre       value.type() == value_t::object
+    */
+    void write_bson_object(const typename BasicJsonType::object_t& value)
+    {
+        write_number<std::int32_t, true>(static_cast<std::int32_t>(calc_bson_object_size(value)));
+
+        for (const auto& el : value)
+        {
+            write_bson_element(el.first, el.second);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    static constexpr CharType get_cbor_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xFA);  // Single-Precision Float
+    }
+
+    static constexpr CharType get_cbor_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xFB);  // Double-Precision Float
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    static constexpr CharType get_msgpack_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xCA);  // float 32
+    }
+
+    static constexpr CharType get_msgpack_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xCB);  // float 64
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    // UBJSON: write number (floating point)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_floating_point<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix)
+    {
+        if (add_prefix)
+        {
+            oa->write_character(get_ubjson_float_prefix(n));
+        }
+        write_number(n);
+    }
+
+    // UBJSON: write number (unsigned integer)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_unsigned<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix)
+    {
+        if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::uint8_t>(n));
+        }
+        else if (n <= (std::numeric_limits<std::uint8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n));
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n));
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n));
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n));
+        }
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+    }
+
+    // UBJSON: write number (signed integer)
+    template < typename NumberType, typename std::enable_if <
+                   std::is_signed<NumberType>::value&&
+                   !std::is_floating_point<NumberType>::value, int >::type = 0 >
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix)
+    {
+        if ((std::numeric_limits<std::int8_t>::min)() <= n && n <= (std::numeric_limits<std::int8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::int8_t>(n));
+        }
+        else if (static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n));
+        }
+        else if ((std::numeric_limits<std::int16_t>::min)() <= n && n <= (std::numeric_limits<std::int16_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n));
+        }
+        else if ((std::numeric_limits<std::int32_t>::min)() <= n && n <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n));
+        }
+        else if ((std::numeric_limits<std::int64_t>::min)() <= n && n <= (std::numeric_limits<std::int64_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n));
+        }
+        // LCOV_EXCL_START
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+        // LCOV_EXCL_STOP
+    }
+
+    /*!
+    @brief determine the type prefix of container values
+    */
+    CharType ubjson_prefix(const BasicJsonType& j) const noexcept
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+                return 'Z';
+
+            case value_t::boolean:
+                return j.m_value.boolean ? 'T' : 'F';
+
+            case value_t::number_integer:
+            {
+                if ((std::numeric_limits<std::int8_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                {
+                    return 'i';
+                }
+                if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    return 'U';
+                }
+                if ((std::numeric_limits<std::int16_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                {
+                    return 'I';
+                }
+                if ((std::numeric_limits<std::int32_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                {
+                    return 'l';
+                }
+                if ((std::numeric_limits<std::int64_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                {
+                    return 'L';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+                {
+                    return 'i';
+                }
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint8_t>::max)()))
+                {
+                    return 'U';
+                }
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+                {
+                    return 'I';
+                }
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+                {
+                    return 'l';
+                }
+                if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+                {
+                    return 'L';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_float:
+                return get_ubjson_float_prefix(j.m_value.number_float);
+
+            case value_t::string:
+                return 'S';
+
+            case value_t::array: // fallthrough
+            case value_t::binary:
+                return '[';
+
+            case value_t::object:
+                return '{';
+
+            case value_t::discarded:
+            default:  // discarded values
+                return 'N';
+        }
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(float /*unused*/)
+    {
+        return 'd';  // float 32
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(double /*unused*/)
+    {
+        return 'D';  // float 64
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*
+    @brief write a number to output input
+    @param[in] n number of type @a NumberType
+    @tparam NumberType the type of the number
+    @tparam OutputIsLittleEndian Set to true if output data is
+                                 required to be little endian
+
+    @note This function needs to respect the system's endianness, because bytes
+          in CBOR, MessagePack, and UBJSON are stored in network order (big
+          endian) and therefore need reordering on little endian systems.
+    */
+    template<typename NumberType, bool OutputIsLittleEndian = false>
+    void write_number(const NumberType n)
+    {
+        // step 1: write number to array of length NumberType
+        std::array<CharType, sizeof(NumberType)> vec{};
+        std::memcpy(vec.data(), &n, sizeof(NumberType));
+
+        // step 2: write array to output (with possible reordering)
+        if (is_little_endian != OutputIsLittleEndian)
+        {
+            // reverse byte order prior to conversion if necessary
+            std::reverse(vec.begin(), vec.end());
+        }
+
+        oa->write_characters(vec.data(), sizeof(NumberType));
+    }
+
+    void write_compact_float(const number_float_t n, detail::input_format_t format)
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        if (static_cast<double>(n) >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
+                static_cast<double>(n) <= static_cast<double>((std::numeric_limits<float>::max)()) &&
+                static_cast<double>(static_cast<float>(n)) == static_cast<double>(n))
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(static_cast<float>(n))
+                                : get_msgpack_float_prefix(static_cast<float>(n)));
+            write_number(static_cast<float>(n));
+        }
+        else
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(n)
+                                : get_msgpack_float_prefix(n));
+            write_number(n);
+        }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+  public:
+    // The following to_char_type functions are implement the conversion
+    // between uint8_t and CharType. In case CharType is not unsigned,
+    // such a conversion is required to allow values greater than 128.
+    // See <https://github.com/nlohmann/json/issues/1286> for a discussion.
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_signed<char>::value > * = nullptr >
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return *reinterpret_cast<char*>(&x);
+    }
+
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_unsigned<char>::value > * = nullptr >
+    static CharType to_char_type(std::uint8_t x) noexcept
+    {
+        static_assert(sizeof(std::uint8_t) == sizeof(CharType), "size of CharType must be equal to std::uint8_t");
+        static_assert(std::is_trivial<CharType>::value, "CharType must be trivial");
+        CharType result;
+        std::memcpy(&result, &x, sizeof(x));
+        return result;
+    }
+
+    template<typename C = CharType,
+             enable_if_t<std::is_unsigned<C>::value>* = nullptr>
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return x;
+    }
+
+    template < typename InputCharType, typename C = CharType,
+               enable_if_t <
+                   std::is_signed<C>::value &&
+                   std::is_signed<char>::value &&
+                   std::is_same<char, typename std::remove_cv<InputCharType>::type>::value
+                   > * = nullptr >
+    static constexpr CharType to_char_type(InputCharType x) noexcept
+    {
+        return x;
+    }
+
+  private:
+    /// whether we can assume little endianness
+    const bool is_little_endian = little_endianness();
+
+    /// the output
+    output_adapter_t<CharType> oa = nullptr;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+// #include <nlohmann/detail/output/serializer.hpp>
+
+
+#include <algorithm> // reverse, remove, fill, find, none_of
+#include <array> // array
+#include <clocale> // localeconv, lconv
+#include <cmath> // labs, isfinite, isnan, signbit
+#include <cstddef> // size_t, ptrdiff_t
+#include <cstdint> // uint8_t
+#include <cstdio> // snprintf
+#include <limits> // numeric_limits
+#include <string> // string, char_traits
+#include <iomanip> // setfill, setw
+#include <sstream> // stringstream
+#include <type_traits> // is_same
+#include <utility> // move
+
+// #include <nlohmann/detail/conversions/to_chars.hpp>
+
+
+#include <array> // array
+#include <cmath>   // signbit, isfinite
+#include <cstdint> // intN_t, uintN_t
+#include <cstring> // memcpy, memmove
+#include <limits> // numeric_limits
+#include <type_traits> // conditional
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+
+/*!
+@brief implements the Grisu2 algorithm for binary to decimal floating-point
+conversion.
+
+This implementation is a slightly modified version of the reference
+implementation which may be obtained from
+http://florian.loitsch.com/publications (bench.tar.gz).
+
+The code is distributed under the MIT license, Copyright (c) 2009 Florian Loitsch.
+
+For a detailed description of the algorithm see:
+
+[1] Loitsch, "Printing Floating-Point Numbers Quickly and Accurately with
+    Integers", Proceedings of the ACM SIGPLAN 2010 Conference on Programming
+    Language Design and Implementation, PLDI 2010
+[2] Burger, Dybvig, "Printing Floating-Point Numbers Quickly and Accurately",
+    Proceedings of the ACM SIGPLAN 1996 Conference on Programming Language
+    Design and Implementation, PLDI 1996
+*/
+namespace dtoa_impl
+{
+
+template<typename Target, typename Source>
+Target reinterpret_bits(const Source source)
+{
+    static_assert(sizeof(Target) == sizeof(Source), "size mismatch");
+
+    Target target;
+    std::memcpy(&target, &source, sizeof(Source));
+    return target;
+}
+
+struct diyfp // f * 2^e
+{
+    static constexpr int kPrecision = 64; // = q
+
+    std::uint64_t f = 0;
+    int e = 0;
+
+    constexpr diyfp(std::uint64_t f_, int e_) noexcept : f(f_), e(e_) {}
+
+    /*!
+    @brief returns x - y
+    @pre x.e == y.e and x.f >= y.f
+    */
+    static diyfp sub(const diyfp& x, const diyfp& y) noexcept
+    {
+        JSON_ASSERT(x.e == y.e);
+        JSON_ASSERT(x.f >= y.f);
+
+        return {x.f - y.f, x.e};
+    }
+
+    /*!
+    @brief returns x * y
+    @note The result is rounded. (Only the upper q bits are returned.)
+    */
+    static diyfp mul(const diyfp& x, const diyfp& y) noexcept
+    {
+        static_assert(kPrecision == 64, "internal error");
+
+        // Computes:
+        //  f = round((x.f * y.f) / 2^q)
+        //  e = x.e + y.e + q
+
+        // Emulate the 64-bit * 64-bit multiplication:
+        //
+        // p = u * v
+        //   = (u_lo + 2^32 u_hi) (v_lo + 2^32 v_hi)
+        //   = (u_lo v_lo         ) + 2^32 ((u_lo v_hi         ) + (u_hi v_lo         )) + 2^64 (u_hi v_hi         )
+        //   = (p0                ) + 2^32 ((p1                ) + (p2                )) + 2^64 (p3                )
+        //   = (p0_lo + 2^32 p0_hi) + 2^32 ((p1_lo + 2^32 p1_hi) + (p2_lo + 2^32 p2_hi)) + 2^64 (p3                )
+        //   = (p0_lo             ) + 2^32 (p0_hi + p1_lo + p2_lo                      ) + 2^64 (p1_hi + p2_hi + p3)
+        //   = (p0_lo             ) + 2^32 (Q                                          ) + 2^64 (H                 )
+        //   = (p0_lo             ) + 2^32 (Q_lo + 2^32 Q_hi                           ) + 2^64 (H                 )
+        //
+        // (Since Q might be larger than 2^32 - 1)
+        //
+        //   = (p0_lo + 2^32 Q_lo) + 2^64 (Q_hi + H)
+        //
+        // (Q_hi + H does not overflow a 64-bit int)
+        //
+        //   = p_lo + 2^64 p_hi
+
+        const std::uint64_t u_lo = x.f & 0xFFFFFFFFu;
+        const std::uint64_t u_hi = x.f >> 32u;
+        const std::uint64_t v_lo = y.f & 0xFFFFFFFFu;
+        const std::uint64_t v_hi = y.f >> 32u;
+
+        const std::uint64_t p0 = u_lo * v_lo;
+        const std::uint64_t p1 = u_lo * v_hi;
+        const std::uint64_t p2 = u_hi * v_lo;
+        const std::uint64_t p3 = u_hi * v_hi;
+
+        const std::uint64_t p0_hi = p0 >> 32u;
+        const std::uint64_t p1_lo = p1 & 0xFFFFFFFFu;
+        const std::uint64_t p1_hi = p1 >> 32u;
+        const std::uint64_t p2_lo = p2 & 0xFFFFFFFFu;
+        const std::uint64_t p2_hi = p2 >> 32u;
+
+        std::uint64_t Q = p0_hi + p1_lo + p2_lo;
+
+        // The full product might now be computed as
+        //
+        // p_hi = p3 + p2_hi + p1_hi + (Q >> 32)
+        // p_lo = p0_lo + (Q << 32)
+        //
+        // But in this particular case here, the full p_lo is not required.
+        // Effectively we only need to add the highest bit in p_lo to p_hi (and
+        // Q_hi + 1 does not overflow).
+
+        Q += std::uint64_t{1} << (64u - 32u - 1u); // round, ties up
+
+        const std::uint64_t h = p3 + p2_hi + p1_hi + (Q >> 32u);
+
+        return {h, x.e + y.e + 64};
+    }
+
+    /*!
+    @brief normalize x such that the significand is >= 2^(q-1)
+    @pre x.f != 0
+    */
+    static diyfp normalize(diyfp x) noexcept
+    {
+        JSON_ASSERT(x.f != 0);
+
+        while ((x.f >> 63u) == 0)
+        {
+            x.f <<= 1u;
+            x.e--;
+        }
+
+        return x;
+    }
+
+    /*!
+    @brief normalize x such that the result has the exponent E
+    @pre e >= x.e and the upper e - x.e bits of x.f must be zero.
+    */
+    static diyfp normalize_to(const diyfp& x, const int target_exponent) noexcept
+    {
+        const int delta = x.e - target_exponent;
+
+        JSON_ASSERT(delta >= 0);
+        JSON_ASSERT(((x.f << delta) >> delta) == x.f);
+
+        return {x.f << delta, target_exponent};
+    }
+};
+
+struct boundaries
+{
+    diyfp w;
+    diyfp minus;
+    diyfp plus;
+};
+
+/*!
+Compute the (normalized) diyfp representing the input number 'value' and its
+boundaries.
+
+@pre value must be finite and positive
+*/
+template<typename FloatType>
+boundaries compute_boundaries(FloatType value)
+{
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // Convert the IEEE representation into a diyfp.
+    //
+    // If v is denormal:
+    //      value = 0.F * 2^(1 - bias) = (          F) * 2^(1 - bias - (p-1))
+    // If v is normalized:
+    //      value = 1.F * 2^(E - bias) = (2^(p-1) + F) * 2^(E - bias - (p-1))
+
+    static_assert(std::numeric_limits<FloatType>::is_iec559,
+                  "internal error: dtoa_short requires an IEEE-754 floating-point implementation");
+
+    constexpr int      kPrecision = std::numeric_limits<FloatType>::digits; // = p (includes the hidden bit)
+    constexpr int      kBias      = std::numeric_limits<FloatType>::max_exponent - 1 + (kPrecision - 1);
+    constexpr int      kMinExp    = 1 - kBias;
+    constexpr std::uint64_t kHiddenBit = std::uint64_t{1} << (kPrecision - 1); // = 2^(p-1)
+
+    using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t >::type;
+
+    const auto bits = static_cast<std::uint64_t>(reinterpret_bits<bits_type>(value));
+    const std::uint64_t E = bits >> (kPrecision - 1);
+    const std::uint64_t F = bits & (kHiddenBit - 1);
+
+    const bool is_denormal = E == 0;
+    const diyfp v = is_denormal
+                    ? diyfp(F, kMinExp)
+                    : diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
+
+    // Compute the boundaries m- and m+ of the floating-point value
+    // v = f * 2^e.
+    //
+    // Determine v- and v+, the floating-point predecessor and successor if v,
+    // respectively.
+    //
+    //      v- = v - 2^e        if f != 2^(p-1) or e == e_min                (A)
+    //         = v - 2^(e-1)    if f == 2^(p-1) and e > e_min                (B)
+    //
+    //      v+ = v + 2^e
+    //
+    // Let m- = (v- + v) / 2 and m+ = (v + v+) / 2. All real numbers _strictly_
+    // between m- and m+ round to v, regardless of how the input rounding
+    // algorithm breaks ties.
+    //
+    //      ---+-------------+-------------+-------------+-------------+---  (A)
+    //         v-            m-            v             m+            v+
+    //
+    //      -----------------+------+------+-------------+-------------+---  (B)
+    //                       v-     m-     v             m+            v+
+
+    const bool lower_boundary_is_closer = F == 0 && E > 1;
+    const diyfp m_plus = diyfp(2 * v.f + 1, v.e - 1);
+    const diyfp m_minus = lower_boundary_is_closer
+                          ? diyfp(4 * v.f - 1, v.e - 2)  // (B)
+                          : diyfp(2 * v.f - 1, v.e - 1); // (A)
+
+    // Determine the normalized w+ = m+.
+    const diyfp w_plus = diyfp::normalize(m_plus);
+
+    // Determine w- = m- such that e_(w-) = e_(w+).
+    const diyfp w_minus = diyfp::normalize_to(m_minus, w_plus.e);
+
+    return {diyfp::normalize(v), w_minus, w_plus};
+}
+
+// Given normalized diyfp w, Grisu needs to find a (normalized) cached
+// power-of-ten c, such that the exponent of the product c * w = f * 2^e lies
+// within a certain range [alpha, gamma] (Definition 3.2 from [1])
+//
+//      alpha <= e = e_c + e_w + q <= gamma
+//
+// or
+//
+//      f_c * f_w * 2^alpha <= f_c 2^(e_c) * f_w 2^(e_w) * 2^q
+//                          <= f_c * f_w * 2^gamma
+//
+// Since c and w are normalized, i.e. 2^(q-1) <= f < 2^q, this implies
+//
+//      2^(q-1) * 2^(q-1) * 2^alpha <= c * w * 2^q < 2^q * 2^q * 2^gamma
+//
+// or
+//
+//      2^(q - 2 + alpha) <= c * w < 2^(q + gamma)
+//
+// The choice of (alpha,gamma) determines the size of the table and the form of
+// the digit generation procedure. Using (alpha,gamma)=(-60,-32) works out well
+// in practice:
+//
+// The idea is to cut the number c * w = f * 2^e into two parts, which can be
+// processed independently: An integral part p1, and a fractional part p2:
+//
+//      f * 2^e = ( (f div 2^-e) * 2^-e + (f mod 2^-e) ) * 2^e
+//              = (f div 2^-e) + (f mod 2^-e) * 2^e
+//              = p1 + p2 * 2^e
+//
+// The conversion of p1 into decimal form requires a series of divisions and
+// modulos by (a power of) 10. These operations are faster for 32-bit than for
+// 64-bit integers, so p1 should ideally fit into a 32-bit integer. This can be
+// achieved by choosing
+//
+//      -e >= 32   or   e <= -32 := gamma
+//
+// In order to convert the fractional part
+//
+//      p2 * 2^e = p2 / 2^-e = d[-1] / 10^1 + d[-2] / 10^2 + ...
+//
+// into decimal form, the fraction is repeatedly multiplied by 10 and the digits
+// d[-i] are extracted in order:
+//
+//      (10 * p2) div 2^-e = d[-1]
+//      (10 * p2) mod 2^-e = d[-2] / 10^1 + ...
+//
+// The multiplication by 10 must not overflow. It is sufficient to choose
+//
+//      10 * p2 < 16 * p2 = 2^4 * p2 <= 2^64.
+//
+// Since p2 = f mod 2^-e < 2^-e,
+//
+//      -e <= 60   or   e >= -60 := alpha
+
+constexpr int kAlpha = -60;
+constexpr int kGamma = -32;
+
+struct cached_power // c = f * 2^e ~= 10^k
+{
+    std::uint64_t f;
+    int e;
+    int k;
+};
+
+/*!
+For a normalized diyfp w = f * 2^e, this function returns a (normalized) cached
+power-of-ten c = f_c * 2^e_c, such that the exponent of the product w * c
+satisfies (Definition 3.2 from [1])
+
+     alpha <= e_c + e + q <= gamma.
+*/
+inline cached_power get_cached_power_for_binary_exponent(int e)
+{
+    // Now
+    //
+    //      alpha <= e_c + e + q <= gamma                                    (1)
+    //      ==> f_c * 2^alpha <= c * 2^e * 2^q
+    //
+    // and since the c's are normalized, 2^(q-1) <= f_c,
+    //
+    //      ==> 2^(q - 1 + alpha) <= c * 2^(e + q)
+    //      ==> 2^(alpha - e - 1) <= c
+    //
+    // If c were an exact power of ten, i.e. c = 10^k, one may determine k as
+    //
+    //      k = ceil( log_10( 2^(alpha - e - 1) ) )
+    //        = ceil( (alpha - e - 1) * log_10(2) )
+    //
+    // From the paper:
+    // "In theory the result of the procedure could be wrong since c is rounded,
+    //  and the computation itself is approximated [...]. In practice, however,
+    //  this simple function is sufficient."
+    //
+    // For IEEE double precision floating-point numbers converted into
+    // normalized diyfp's w = f * 2^e, with q = 64,
+    //
+    //      e >= -1022      (min IEEE exponent)
+    //           -52        (p - 1)
+    //           -52        (p - 1, possibly normalize denormal IEEE numbers)
+    //           -11        (normalize the diyfp)
+    //         = -1137
+    //
+    // and
+    //
+    //      e <= +1023      (max IEEE exponent)
+    //           -52        (p - 1)
+    //           -11        (normalize the diyfp)
+    //         = 960
+    //
+    // This binary exponent range [-1137,960] results in a decimal exponent
+    // range [-307,324]. One does not need to store a cached power for each
+    // k in this range. For each such k it suffices to find a cached power
+    // such that the exponent of the product lies in [alpha,gamma].
+    // This implies that the difference of the decimal exponents of adjacent
+    // table entries must be less than or equal to
+    //
+    //      floor( (gamma - alpha) * log_10(2) ) = 8.
+    //
+    // (A smaller distance gamma-alpha would require a larger table.)
+
+    // NB:
+    // Actually this function returns c, such that -60 <= e_c + e + 64 <= -34.
+
+    constexpr int kCachedPowersMinDecExp = -300;
+    constexpr int kCachedPowersDecStep = 8;
+
+    static constexpr std::array<cached_power, 79> kCachedPowers =
+    {
+        {
+            { 0xAB70FE17C79AC6CA, -1060, -300 },
+            { 0xFF77B1FCBEBCDC4F, -1034, -292 },
+            { 0xBE5691EF416BD60C, -1007, -284 },
+            { 0x8DD01FAD907FFC3C,  -980, -276 },
+            { 0xD3515C2831559A83,  -954, -268 },
+            { 0x9D71AC8FADA6C9B5,  -927, -260 },
+            { 0xEA9C227723EE8BCB,  -901, -252 },
+            { 0xAECC49914078536D,  -874, -244 },
+            { 0x823C12795DB6CE57,  -847, -236 },
+            { 0xC21094364DFB5637,  -821, -228 },
+            { 0x9096EA6F3848984F,  -794, -220 },
+            { 0xD77485CB25823AC7,  -768, -212 },
+            { 0xA086CFCD97BF97F4,  -741, -204 },
+            { 0xEF340A98172AACE5,  -715, -196 },
+            { 0xB23867FB2A35B28E,  -688, -188 },
+            { 0x84C8D4DFD2C63F3B,  -661, -180 },
+            { 0xC5DD44271AD3CDBA,  -635, -172 },
+            { 0x936B9FCEBB25C996,  -608, -164 },
+            { 0xDBAC6C247D62A584,  -582, -156 },
+            { 0xA3AB66580D5FDAF6,  -555, -148 },
+            { 0xF3E2F893DEC3F126,  -529, -140 },
+            { 0xB5B5ADA8AAFF80B8,  -502, -132 },
+            { 0x87625F056C7C4A8B,  -475, -124 },
+            { 0xC9BCFF6034C13053,  -449, -116 },
+            { 0x964E858C91BA2655,  -422, -108 },
+            { 0xDFF9772470297EBD,  -396, -100 },
+            { 0xA6DFBD9FB8E5B88F,  -369,  -92 },
+            { 0xF8A95FCF88747D94,  -343,  -84 },
+            { 0xB94470938FA89BCF,  -316,  -76 },
+            { 0x8A08F0F8BF0F156B,  -289,  -68 },
+            { 0xCDB02555653131B6,  -263,  -60 },
+            { 0x993FE2C6D07B7FAC,  -236,  -52 },
+            { 0xE45C10C42A2B3B06,  -210,  -44 },
+            { 0xAA242499697392D3,  -183,  -36 },
+            { 0xFD87B5F28300CA0E,  -157,  -28 },
+            { 0xBCE5086492111AEB,  -130,  -20 },
+            { 0x8CBCCC096F5088CC,  -103,  -12 },
+            { 0xD1B71758E219652C,   -77,   -4 },
+            { 0x9C40000000000000,   -50,    4 },
+            { 0xE8D4A51000000000,   -24,   12 },
+            { 0xAD78EBC5AC620000,     3,   20 },
+            { 0x813F3978F8940984,    30,   28 },
+            { 0xC097CE7BC90715B3,    56,   36 },
+            { 0x8F7E32CE7BEA5C70,    83,   44 },
+            { 0xD5D238A4ABE98068,   109,   52 },
+            { 0x9F4F2726179A2245,   136,   60 },
+            { 0xED63A231D4C4FB27,   162,   68 },
+            { 0xB0DE65388CC8ADA8,   189,   76 },
+            { 0x83C7088E1AAB65DB,   216,   84 },
+            { 0xC45D1DF942711D9A,   242,   92 },
+            { 0x924D692CA61BE758,   269,  100 },
+            { 0xDA01EE641A708DEA,   295,  108 },
+            { 0xA26DA3999AEF774A,   322,  116 },
+            { 0xF209787BB47D6B85,   348,  124 },
+            { 0xB454E4A179DD1877,   375,  132 },
+            { 0x865B86925B9BC5C2,   402,  140 },
+            { 0xC83553C5C8965D3D,   428,  148 },
+            { 0x952AB45CFA97A0B3,   455,  156 },
+            { 0xDE469FBD99A05FE3,   481,  164 },
+            { 0xA59BC234DB398C25,   508,  172 },
+            { 0xF6C69A72A3989F5C,   534,  180 },
+            { 0xB7DCBF5354E9BECE,   561,  188 },
+            { 0x88FCF317F22241E2,   588,  196 },
+            { 0xCC20CE9BD35C78A5,   614,  204 },
+            { 0x98165AF37B2153DF,   641,  212 },
+            { 0xE2A0B5DC971F303A,   667,  220 },
+            { 0xA8D9D1535CE3B396,   694,  228 },
+            { 0xFB9B7CD9A4A7443C,   720,  236 },
+            { 0xBB764C4CA7A44410,   747,  244 },
+            { 0x8BAB8EEFB6409C1A,   774,  252 },
+            { 0xD01FEF10A657842C,   800,  260 },
+            { 0x9B10A4E5E9913129,   827,  268 },
+            { 0xE7109BFBA19C0C9D,   853,  276 },
+            { 0xAC2820D9623BF429,   880,  284 },
+            { 0x80444B5E7AA7CF85,   907,  292 },
+            { 0xBF21E44003ACDD2D,   933,  300 },
+            { 0x8E679C2F5E44FF8F,   960,  308 },
+            { 0xD433179D9C8CB841,   986,  316 },
+            { 0x9E19DB92B4E31BA9,  1013,  324 },
+        }
+    };
+
+    // This computation gives exactly the same results for k as
+    //      k = ceil((kAlpha - e - 1) * 0.30102999566398114)
+    // for |e| <= 1500, but doesn't require floating-point operations.
+    // NB: log_10(2) ~= 78913 / 2^18
+    JSON_ASSERT(e >= -1500);
+    JSON_ASSERT(e <=  1500);
+    const int f = kAlpha - e - 1;
+    const int k = (f * 78913) / (1 << 18) + static_cast<int>(f > 0);
+
+    const int index = (-kCachedPowersMinDecExp + k + (kCachedPowersDecStep - 1)) / kCachedPowersDecStep;
+    JSON_ASSERT(index >= 0);
+    JSON_ASSERT(static_cast<std::size_t>(index) < kCachedPowers.size());
+
+    const cached_power cached = kCachedPowers[static_cast<std::size_t>(index)];
+    JSON_ASSERT(kAlpha <= cached.e + e + 64);
+    JSON_ASSERT(kGamma >= cached.e + e + 64);
+
+    return cached;
+}
+
+/*!
+For n != 0, returns k, such that pow10 := 10^(k-1) <= n < 10^k.
+For n == 0, returns 1 and sets pow10 := 1.
+*/
+inline int find_largest_pow10(const std::uint32_t n, std::uint32_t& pow10)
+{
+    // LCOV_EXCL_START
+    if (n >= 1000000000)
+    {
+        pow10 = 1000000000;
+        return 10;
+    }
+    // LCOV_EXCL_STOP
+    if (n >= 100000000)
+    {
+        pow10 = 100000000;
+        return  9;
+    }
+    if (n >= 10000000)
+    {
+        pow10 = 10000000;
+        return  8;
+    }
+    if (n >= 1000000)
+    {
+        pow10 = 1000000;
+        return  7;
+    }
+    if (n >= 100000)
+    {
+        pow10 = 100000;
+        return  6;
+    }
+    if (n >= 10000)
+    {
+        pow10 = 10000;
+        return  5;
+    }
+    if (n >= 1000)
+    {
+        pow10 = 1000;
+        return  4;
+    }
+    if (n >= 100)
+    {
+        pow10 = 100;
+        return  3;
+    }
+    if (n >= 10)
+    {
+        pow10 = 10;
+        return  2;
+    }
+
+    pow10 = 1;
+    return 1;
+}
+
+inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t delta,
+                         std::uint64_t rest, std::uint64_t ten_k)
+{
+    JSON_ASSERT(len >= 1);
+    JSON_ASSERT(dist <= delta);
+    JSON_ASSERT(rest <= delta);
+    JSON_ASSERT(ten_k > 0);
+
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    //                                  ten_k
+    //                                <------>
+    //                                       <---- rest ---->
+    // --------------[------------------+----+--------------]--------------
+    //                                  w    V
+    //                                       = buf * 10^k
+    //
+    // ten_k represents a unit-in-the-last-place in the decimal representation
+    // stored in buf.
+    // Decrement buf by ten_k while this takes buf closer to w.
+
+    // The tests are written in this order to avoid overflow in unsigned
+    // integer arithmetic.
+
+    while (rest < dist
+            && delta - rest >= ten_k
+            && (rest + ten_k < dist || dist - rest > rest + ten_k - dist))
+    {
+        JSON_ASSERT(buf[len - 1] != '0');
+        buf[len - 1]--;
+        rest += ten_k;
+    }
+}
+
+/*!
+Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+.
+M- and M+ must be normalized and share the same exponent -60 <= e <= -32.
+*/
+inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
+                             diyfp M_minus, diyfp w, diyfp M_plus)
+{
+    static_assert(kAlpha >= -60, "internal error");
+    static_assert(kGamma <= -32, "internal error");
+
+    // Generates the digits (and the exponent) of a decimal floating-point
+    // number V = buffer * 10^decimal_exponent in the range [M-, M+]. The diyfp's
+    // w, M- and M+ share the same exponent e, which satisfies alpha <= e <= gamma.
+    //
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    // Grisu2 generates the digits of M+ from left to right and stops as soon as
+    // V is in [M-,M+].
+
+    JSON_ASSERT(M_plus.e >= kAlpha);
+    JSON_ASSERT(M_plus.e <= kGamma);
+
+    std::uint64_t delta = diyfp::sub(M_plus, M_minus).f; // (significand of (M+ - M-), implicit exponent is e)
+    std::uint64_t dist  = diyfp::sub(M_plus, w      ).f; // (significand of (M+ - w ), implicit exponent is e)
+
+    // Split M+ = f * 2^e into two parts p1 and p2 (note: e < 0):
+    //
+    //      M+ = f * 2^e
+    //         = ((f div 2^-e) * 2^-e + (f mod 2^-e)) * 2^e
+    //         = ((p1        ) * 2^-e + (p2        )) * 2^e
+    //         = p1 + p2 * 2^e
+
+    const diyfp one(std::uint64_t{1} << -M_plus.e, M_plus.e);
+
+    auto p1 = static_cast<std::uint32_t>(M_plus.f >> -one.e); // p1 = f div 2^-e (Since -e >= 32, p1 fits into a 32-bit int.)
+    std::uint64_t p2 = M_plus.f & (one.f - 1);                    // p2 = f mod 2^-e
+
+    // 1)
+    //
+    // Generate the digits of the integral part p1 = d[n-1]...d[1]d[0]
+
+    JSON_ASSERT(p1 > 0);
+
+    std::uint32_t pow10{};
+    const int k = find_largest_pow10(p1, pow10);
+
+    //      10^(k-1) <= p1 < 10^k, pow10 = 10^(k-1)
+    //
+    //      p1 = (p1 div 10^(k-1)) * 10^(k-1) + (p1 mod 10^(k-1))
+    //         = (d[k-1]         ) * 10^(k-1) + (p1 mod 10^(k-1))
+    //
+    //      M+ = p1                                             + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + (p1 mod 10^(k-1))          + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + ((p1 mod 10^(k-1)) * 2^-e + p2) * 2^e
+    //         = d[k-1] * 10^(k-1) + (                         rest) * 2^e
+    //
+    // Now generate the digits d[n] of p1 from left to right (n = k-1,...,0)
+    //
+    //      p1 = d[k-1]...d[n] * 10^n + d[n-1]...d[0]
+    //
+    // but stop as soon as
+    //
+    //      rest * 2^e = (d[n-1]...d[0] * 2^-e + p2) * 2^e <= delta * 2^e
+
+    int n = k;
+    while (n > 0)
+    {
+        // Invariants:
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)    (buffer = 0 for n = k)
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        //
+        const std::uint32_t d = p1 / pow10;  // d = p1 div 10^(n-1)
+        const std::uint32_t r = p1 % pow10;  // r = p1 mod 10^(n-1)
+        //
+        //      M+ = buffer * 10^n + (d * 10^(n-1) + r) + p2 * 2^e
+        //         = (buffer * 10 + d) * 10^(n-1) + (r + p2 * 2^e)
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(n-1) + (r + p2 * 2^e)
+        //
+        p1 = r;
+        n--;
+        //
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)
+        //      pow10 = 10^n
+        //
+
+        // Now check if enough digits have been generated.
+        // Compute
+        //
+        //      p1 + p2 * 2^e = (p1 * 2^-e + p2) * 2^e = rest * 2^e
+        //
+        // Note:
+        // Since rest and delta share the same exponent e, it suffices to
+        // compare the significands.
+        const std::uint64_t rest = (std::uint64_t{p1} << -one.e) + p2;
+        if (rest <= delta)
+        {
+            // V = buffer * 10^n, with M- <= V <= M+.
+
+            decimal_exponent += n;
+
+            // We may now just stop. But instead look if the buffer could be
+            // decremented to bring V closer to w.
+            //
+            // pow10 = 10^n is now 1 ulp in the decimal representation V.
+            // The rounding procedure works with diyfp's with an implicit
+            // exponent of e.
+            //
+            //      10^n = (10^n * 2^-e) * 2^e = ulp * 2^e
+            //
+            const std::uint64_t ten_n = std::uint64_t{pow10} << -one.e;
+            grisu2_round(buffer, length, dist, delta, rest, ten_n);
+
+            return;
+        }
+
+        pow10 /= 10;
+        //
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        // Invariants restored.
+    }
+
+    // 2)
+    //
+    // The digits of the integral part have been generated:
+    //
+    //      M+ = d[k-1]...d[1]d[0] + p2 * 2^e
+    //         = buffer            + p2 * 2^e
+    //
+    // Now generate the digits of the fractional part p2 * 2^e.
+    //
+    // Note:
+    // No decimal point is generated: the exponent is adjusted instead.
+    //
+    // p2 actually represents the fraction
+    //
+    //      p2 * 2^e
+    //          = p2 / 2^-e
+    //          = d[-1] / 10^1 + d[-2] / 10^2 + ...
+    //
+    // Now generate the digits d[-m] of p1 from left to right (m = 1,2,...)
+    //
+    //      p2 * 2^e = d[-1]d[-2]...d[-m] * 10^-m
+    //                      + 10^-m * (d[-m-1] / 10^1 + d[-m-2] / 10^2 + ...)
+    //
+    // using
+    //
+    //      10^m * p2 = ((10^m * p2) div 2^-e) * 2^-e + ((10^m * p2) mod 2^-e)
+    //                = (                   d) * 2^-e + (                   r)
+    //
+    // or
+    //      10^m * p2 * 2^e = d + r * 2^e
+    //
+    // i.e.
+    //
+    //      M+ = buffer + p2 * 2^e
+    //         = buffer + 10^-m * (d + r * 2^e)
+    //         = (buffer * 10^m + d) * 10^-m + 10^-m * r * 2^e
+    //
+    // and stop as soon as 10^-m * r * 2^e <= delta * 2^e
+
+    JSON_ASSERT(p2 > delta);
+
+    int m = 0;
+    for (;;)
+    {
+        // Invariant:
+        //      M+ = buffer * 10^-m + 10^-m * (d[-m-1] / 10 + d[-m-2] / 10^2 + ...) * 2^e
+        //         = buffer * 10^-m + 10^-m * (p2                                 ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (10 * p2)                   ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * ((10*p2 div 2^-e) * 2^-e + (10*p2 mod 2^-e)) * 2^e
+        //
+        JSON_ASSERT(p2 <= (std::numeric_limits<std::uint64_t>::max)() / 10);
+        p2 *= 10;
+        const std::uint64_t d = p2 >> -one.e;     // d = (10 * p2) div 2^-e
+        const std::uint64_t r = p2 & (one.f - 1); // r = (10 * p2) mod 2^-e
+        //
+        //      M+ = buffer * 10^-m + 10^-m * (1/10 * (d * 2^-e + r) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (d + r * 2^e))
+        //         = (buffer * 10 + d) * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        p2 = r;
+        m++;
+        //
+        //      M+ = buffer * 10^-m + 10^-m * p2 * 2^e
+        // Invariant restored.
+
+        // Check if enough digits have been generated.
+        //
+        //      10^-m * p2 * 2^e <= delta * 2^e
+        //              p2 * 2^e <= 10^m * delta * 2^e
+        //                    p2 <= 10^m * delta
+        delta *= 10;
+        dist  *= 10;
+        if (p2 <= delta)
+        {
+            break;
+        }
+    }
+
+    // V = buffer * 10^-m, with M- <= V <= M+.
+
+    decimal_exponent -= m;
+
+    // 1 ulp in the decimal representation is now 10^-m.
+    // Since delta and dist are now scaled by 10^m, we need to do the
+    // same with ulp in order to keep the units in sync.
+    //
+    //      10^m * 10^-m = 1 = 2^-e * 2^e = ten_m * 2^e
+    //
+    const std::uint64_t ten_m = one.f;
+    grisu2_round(buffer, length, dist, delta, p2, ten_m);
+
+    // By construction this algorithm generates the shortest possible decimal
+    // number (Loitsch, Theorem 6.2) which rounds back to w.
+    // For an input number of precision p, at least
+    //
+    //      N = 1 + ceil(p * log_10(2))
+    //
+    // decimal digits are sufficient to identify all binary floating-point
+    // numbers (Matula, "In-and-Out conversions").
+    // This implies that the algorithm does not produce more than N decimal
+    // digits.
+    //
+    //      N = 17 for p = 53 (IEEE double precision)
+    //      N = 9  for p = 24 (IEEE single precision)
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+JSON_HEDLEY_NON_NULL(1)
+inline void grisu2(char* buf, int& len, int& decimal_exponent,
+                   diyfp m_minus, diyfp v, diyfp m_plus)
+{
+    JSON_ASSERT(m_plus.e == m_minus.e);
+    JSON_ASSERT(m_plus.e == v.e);
+
+    //  --------(-----------------------+-----------------------)--------    (A)
+    //          m-                      v                       m+
+    //
+    //  --------------------(-----------+-----------------------)--------    (B)
+    //                      m-          v                       m+
+    //
+    // First scale v (and m- and m+) such that the exponent is in the range
+    // [alpha, gamma].
+
+    const cached_power cached = get_cached_power_for_binary_exponent(m_plus.e);
+
+    const diyfp c_minus_k(cached.f, cached.e); // = c ~= 10^-k
+
+    // The exponent of the products is = v.e + c_minus_k.e + q and is in the range [alpha,gamma]
+    const diyfp w       = diyfp::mul(v,       c_minus_k);
+    const diyfp w_minus = diyfp::mul(m_minus, c_minus_k);
+    const diyfp w_plus  = diyfp::mul(m_plus,  c_minus_k);
+
+    //  ----(---+---)---------------(---+---)---------------(---+---)----
+    //          w-                      w                       w+
+    //          = c*m-                  = c*v                   = c*m+
+    //
+    // diyfp::mul rounds its result and c_minus_k is approximated too. w, w- and
+    // w+ are now off by a small amount.
+    // In fact:
+    //
+    //      w - v * 10^k < 1 ulp
+    //
+    // To account for this inaccuracy, add resp. subtract 1 ulp.
+    //
+    //  --------+---[---------------(---+---)---------------]---+--------
+    //          w-  M-                  w                   M+  w+
+    //
+    // Now any number in [M-, M+] (bounds included) will round to w when input,
+    // regardless of how the input rounding algorithm breaks ties.
+    //
+    // And digit_gen generates the shortest possible such number in [M-, M+].
+    // Note that this does not mean that Grisu2 always generates the shortest
+    // possible number in the interval (m-, m+).
+    const diyfp M_minus(w_minus.f + 1, w_minus.e);
+    const diyfp M_plus (w_plus.f  - 1, w_plus.e );
+
+    decimal_exponent = -cached.k; // = -(-k) = k
+
+    grisu2_digit_gen(buf, len, decimal_exponent, M_minus, w, M_plus);
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1)
+void grisu2(char* buf, int& len, int& decimal_exponent, FloatType value)
+{
+    static_assert(diyfp::kPrecision >= std::numeric_limits<FloatType>::digits + 3,
+                  "internal error: not enough precision");
+
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // If the neighbors (and boundaries) of 'value' are always computed for double-precision
+    // numbers, all float's can be recovered using strtod (and strtof). However, the resulting
+    // decimal representations are not exactly "short".
+    //
+    // The documentation for 'std::to_chars' (https://en.cppreference.com/w/cpp/utility/to_chars)
+    // says "value is converted to a string as if by std::sprintf in the default ("C") locale"
+    // and since sprintf promotes floats to doubles, I think this is exactly what 'std::to_chars'
+    // does.
+    // On the other hand, the documentation for 'std::to_chars' requires that "parsing the
+    // representation using the corresponding std::from_chars function recovers value exactly". That
+    // indicates that single precision floating-point numbers should be recovered using
+    // 'std::strtof'.
+    //
+    // NB: If the neighbors are computed for single-precision numbers, there is a single float
+    //     (7.0385307e-26f) which can't be recovered using strtod. The resulting double precision
+    //     value is off by 1 ulp.
+#if 0
+    const boundaries w = compute_boundaries(static_cast<double>(value));
+#else
+    const boundaries w = compute_boundaries(value);
+#endif
+
+    grisu2(buf, len, decimal_exponent, w.minus, w.w, w.plus);
+}
+
+/*!
+@brief appends a decimal representation of e to buf
+@return a pointer to the element following the exponent.
+@pre -1000 < e < 1000
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* append_exponent(char* buf, int e)
+{
+    JSON_ASSERT(e > -1000);
+    JSON_ASSERT(e <  1000);
+
+    if (e < 0)
+    {
+        e = -e;
+        *buf++ = '-';
+    }
+    else
+    {
+        *buf++ = '+';
+    }
+
+    auto k = static_cast<std::uint32_t>(e);
+    if (k < 10)
+    {
+        // Always print at least two digits in the exponent.
+        // This is for compatibility with printf("%g").
+        *buf++ = '0';
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else if (k < 100)
+    {
+        *buf++ = static_cast<char>('0' + k / 10);
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else
+    {
+        *buf++ = static_cast<char>('0' + k / 100);
+        k %= 100;
+        *buf++ = static_cast<char>('0' + k / 10);
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+
+    return buf;
+}
+
+/*!
+@brief prettify v = buf * 10^decimal_exponent
+
+If v is in the range [10^min_exp, 10^max_exp) it will be printed in fixed-point
+notation. Otherwise it will be printed in exponential notation.
+
+@pre min_exp < 0
+@pre max_exp > 0
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* format_buffer(char* buf, int len, int decimal_exponent,
+                           int min_exp, int max_exp)
+{
+    JSON_ASSERT(min_exp < 0);
+    JSON_ASSERT(max_exp > 0);
+
+    const int k = len;
+    const int n = len + decimal_exponent;
+
+    // v = buf * 10^(n-k)
+    // k is the length of the buffer (number of decimal digits)
+    // n is the position of the decimal point relative to the start of the buffer.
+
+    if (k <= n && n <= max_exp)
+    {
+        // digits[000]
+        // len <= max_exp + 2
+
+        std::memset(buf + k, '0', static_cast<size_t>(n) - static_cast<size_t>(k));
+        // Make it look like a floating-point number (#362, #378)
+        buf[n + 0] = '.';
+        buf[n + 1] = '0';
+        return buf + (static_cast<size_t>(n) + 2);
+    }
+
+    if (0 < n && n <= max_exp)
+    {
+        // dig.its
+        // len <= max_digits10 + 1
+
+        JSON_ASSERT(k > n);
+
+        std::memmove(buf + (static_cast<size_t>(n) + 1), buf + n, static_cast<size_t>(k) - static_cast<size_t>(n));
+        buf[n] = '.';
+        return buf + (static_cast<size_t>(k) + 1U);
+    }
+
+    if (min_exp < n && n <= 0)
+    {
+        // 0.[000]digits
+        // len <= 2 + (-min_exp - 1) + max_digits10
+
+        std::memmove(buf + (2 + static_cast<size_t>(-n)), buf, static_cast<size_t>(k));
+        buf[0] = '0';
+        buf[1] = '.';
+        std::memset(buf + 2, '0', static_cast<size_t>(-n));
+        return buf + (2U + static_cast<size_t>(-n) + static_cast<size_t>(k));
+    }
+
+    if (k == 1)
+    {
+        // dE+123
+        // len <= 1 + 5
+
+        buf += 1;
+    }
+    else
+    {
+        // d.igitsE+123
+        // len <= max_digits10 + 1 + 5
+
+        std::memmove(buf + 2, buf + 1, static_cast<size_t>(k) - 1);
+        buf[1] = '.';
+        buf += 1 + static_cast<size_t>(k);
+    }
+
+    *buf++ = 'e';
+    return append_exponent(buf, n - 1);
+}
+
+} // namespace dtoa_impl
+
+/*!
+@brief generates a decimal representation of the floating-point number value in [first, last).
+
+The format of the resulting decimal representation is similar to printf's %g
+format. Returns an iterator pointing past-the-end of the decimal representation.
+
+@note The input number must be finite, i.e. NaN's and Inf's are not supported.
+@note The buffer must be large enough.
+@note The result is NOT null-terminated.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* to_chars(char* first, const char* last, FloatType value)
+{
+    static_cast<void>(last); // maybe unused - fix warning
+    JSON_ASSERT(std::isfinite(value));
+
+    // Use signbit(value) instead of (value < 0) since signbit works for -0.
+    if (std::signbit(value))
+    {
+        value = -value;
+        *first++ = '-';
+    }
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+    if (value == 0) // +-0
+    {
+        *first++ = '0';
+        // Make it look like a floating-point number (#362, #378)
+        *first++ = '.';
+        *first++ = '0';
+        return first;
+    }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);
+
+    // Compute v = buffer * 10^decimal_exponent.
+    // The decimal digits are stored in the buffer, which needs to be interpreted
+    // as an unsigned decimal integer.
+    // len is the length of the buffer, i.e. the number of decimal digits.
+    int len = 0;
+    int decimal_exponent = 0;
+    dtoa_impl::grisu2(first, len, decimal_exponent, value);
+
+    JSON_ASSERT(len <= std::numeric_limits<FloatType>::max_digits10);
+
+    // Format the buffer like printf("%.*g", prec, value)
+    constexpr int kMinExp = -4;
+    // Use digits10 here to increase compatibility with version 2.
+    constexpr int kMaxExp = std::numeric_limits<FloatType>::digits10;
+
+    JSON_ASSERT(last - first >= kMaxExp + 2);
+    JSON_ASSERT(last - first >= 2 + (-kMinExp - 1) + std::numeric_limits<FloatType>::max_digits10);
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10 + 6);
+
+    return dtoa_impl::format_buffer(first, len, decimal_exponent, kMinExp, kMaxExp);
+}
+
+} // namespace detail
+} // namespace nlohmann
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/output/binary_writer.hpp>
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+namespace nlohmann
+{
+namespace detail
+{
+///////////////////
+// serialization //
+///////////////////
+
+/// how to treat decoding errors
+enum class error_handler_t
+{
+    strict,  ///< throw a type_error exception in case of invalid UTF-8
+    replace, ///< replace invalid UTF-8 sequences with U+FFFD
+    ignore   ///< ignore invalid UTF-8 sequences
+};
+
+template<typename BasicJsonType>
+class serializer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using binary_char_t = typename BasicJsonType::binary_t::value_type;
+    static constexpr std::uint8_t UTF8_ACCEPT = 0;
+    static constexpr std::uint8_t UTF8_REJECT = 1;
+
+  public:
+    /*!
+    @param[in] s  output stream to serialize to
+    @param[in] ichar  indentation character to use
+    @param[in] error_handler_  how to react on decoding errors
+    */
+    serializer(output_adapter_t<char> s, const char ichar,
+               error_handler_t error_handler_ = error_handler_t::strict)
+        : o(std::move(s))
+        , loc(std::localeconv())
+        , thousands_sep(loc->thousands_sep == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->thousands_sep)))
+        , decimal_point(loc->decimal_point == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->decimal_point)))
+        , indent_char(ichar)
+        , indent_string(512, indent_char)
+        , error_handler(error_handler_)
+    {}
+
+    // delete because of pointer members
+    serializer(const serializer&) = delete;
+    serializer& operator=(const serializer&) = delete;
+    serializer(serializer&&) = delete;
+    serializer& operator=(serializer&&) = delete;
+    ~serializer() = default;
+
+    /*!
+    @brief internal implementation of the serialization function
+
+    This function is called by the public member function dump and organizes
+    the serialization internally. The indentation level is propagated as
+    additional parameter. In case of arrays and objects, the function is
+    called recursively.
+
+    - strings and object keys are escaped using `escape_string()`
+    - integer numbers are converted implicitly via `operator<<`
+    - floating-point numbers are converted to a string using `"%g"` format
+    - binary values are serialized as objects containing the subtype and the
+      byte array
+
+    @param[in] val               value to serialize
+    @param[in] pretty_print      whether the output shall be pretty-printed
+    @param[in] ensure_ascii If @a ensure_ascii is true, all non-ASCII characters
+    in the output are escaped with `\uXXXX` sequences, and the result consists
+    of ASCII characters only.
+    @param[in] indent_step       the indent level
+    @param[in] current_indent    the current indent level (only used internally)
+    */
+    void dump(const BasicJsonType& val,
+              const bool pretty_print,
+              const bool ensure_ascii,
+              const unsigned int indent_step,
+              const unsigned int current_indent = 0)
+    {
+        switch (val.m_type)
+        {
+            case value_t::object:
+            {
+                if (val.m_value.object->empty())
+                {
+                    o->write_characters("{}", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    auto i = val.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\": ", 3);
+                        dump(i->second, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_value.object->cend());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\": ", 3);
+                    dump(i->second, true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_character('{');
+
+                    // first n-1 elements
+                    auto i = val.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\":", 2);
+                        dump(i->second, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_value.object->cend());
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\":", 2);
+                    dump(i->second, false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character('}');
+                }
+
+                return;
+            }
+
+            case value_t::array:
+            {
+                if (val.m_value.array->empty())
+                {
+                    o->write_characters("[]", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("[\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    for (auto i = val.m_value.array->cbegin();
+                            i != val.m_value.array->cend() - 1; ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        dump(*i, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_value.array->empty());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    dump(val.m_value.array->back(), true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character(']');
+                }
+                else
+                {
+                    o->write_character('[');
+
+                    // first n-1 elements
+                    for (auto i = val.m_value.array->cbegin();
+                            i != val.m_value.array->cend() - 1; ++i)
+                    {
+                        dump(*i, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_value.array->empty());
+                    dump(val.m_value.array->back(), false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character(']');
+                }
+
+                return;
+            }
+
+            case value_t::string:
+            {
+                o->write_character('\"');
+                dump_escaped(*val.m_value.string, ensure_ascii);
+                o->write_character('\"');
+                return;
+            }
+
+            case value_t::binary:
+            {
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"bytes\": [", 10);
+
+                    if (!val.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_value.binary->cbegin();
+                                i != val.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_characters(", ", 2);
+                        }
+                        dump_integer(val.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\n", 3);
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"subtype\": ", 11);
+                    if (val.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_value.binary->subtype());
+                    }
+                    else
+                    {
+                        o->write_characters("null", 4);
+                    }
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_characters("{\"bytes\":[", 10);
+
+                    if (!val.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_value.binary->cbegin();
+                                i != val.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_character(',');
+                        }
+                        dump_integer(val.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\"subtype\":", 12);
+                    if (val.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_value.binary->subtype());
+                        o->write_character('}');
+                    }
+                    else
+                    {
+                        o->write_characters("null}", 5);
+                    }
+                }
+                return;
+            }
+
+            case value_t::boolean:
+            {
+                if (val.m_value.boolean)
+                {
+                    o->write_characters("true", 4);
+                }
+                else
+                {
+                    o->write_characters("false", 5);
+                }
+                return;
+            }
+
+            case value_t::number_integer:
+            {
+                dump_integer(val.m_value.number_integer);
+                return;
+            }
+
+            case value_t::number_unsigned:
+            {
+                dump_integer(val.m_value.number_unsigned);
+                return;
+            }
+
+            case value_t::number_float:
+            {
+                dump_float(val.m_value.number_float);
+                return;
+            }
+
+            case value_t::discarded:
+            {
+                o->write_characters("<discarded>", 11);
+                return;
+            }
+
+            case value_t::null:
+            {
+                o->write_characters("null", 4);
+                return;
+            }
+
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief dump escaped string
+
+    Escape a string by replacing certain special characters by a sequence of an
+    escape character (backslash) and another character and other control
+    characters by a sequence of "\u" followed by a four-digit hex
+    representation. The escaped string is written to output stream @a o.
+
+    @param[in] s  the string to escape
+    @param[in] ensure_ascii  whether to escape non-ASCII characters with
+                             \uXXXX sequences
+
+    @complexity Linear in the length of string @a s.
+    */
+    void dump_escaped(const string_t& s, const bool ensure_ascii)
+    {
+        std::uint32_t codepoint{};
+        std::uint8_t state = UTF8_ACCEPT;
+        std::size_t bytes = 0;  // number of bytes written to string_buffer
+
+        // number of bytes written at the point of the last valid byte
+        std::size_t bytes_after_last_accept = 0;
+        std::size_t undumped_chars = 0;
+
+        for (std::size_t i = 0; i < s.size(); ++i)
+        {
+            const auto byte = static_cast<std::uint8_t>(s[i]);
+
+            switch (decode(state, codepoint, byte))
+            {
+                case UTF8_ACCEPT:  // decode found a new code point
+                {
+                    switch (codepoint)
+                    {
+                        case 0x08: // backspace
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'b';
+                            break;
+                        }
+
+                        case 0x09: // horizontal tab
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 't';
+                            break;
+                        }
+
+                        case 0x0A: // newline
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'n';
+                            break;
+                        }
+
+                        case 0x0C: // formfeed
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'f';
+                            break;
+                        }
+
+                        case 0x0D: // carriage return
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'r';
+                            break;
+                        }
+
+                        case 0x22: // quotation mark
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\"';
+                            break;
+                        }
+
+                        case 0x5C: // reverse solidus
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\\';
+                            break;
+                        }
+
+                        default:
+                        {
+                            // escape control characters (0x00..0x1F) or, if
+                            // ensure_ascii parameter is used, non-ASCII characters
+                            if ((codepoint <= 0x1F) || (ensure_ascii && (codepoint >= 0x7F)))
+                            {
+                                if (codepoint <= 0xFFFF)
+                                {
+                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 7, "\\u%04x",
+                                                                      static_cast<std::uint16_t>(codepoint)));
+                                    bytes += 6;
+                                }
+                                else
+                                {
+                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 13, "\\u%04x\\u%04x",
+                                                                      static_cast<std::uint16_t>(0xD7C0u + (codepoint >> 10u)),
+                                                                      static_cast<std::uint16_t>(0xDC00u + (codepoint & 0x3FFu))));
+                                    bytes += 12;
+                                }
+                            }
+                            else
+                            {
+                                // copy byte to buffer (all previous bytes
+                                // been copied have in default case above)
+                                string_buffer[bytes++] = s[i];
+                            }
+                            break;
+                        }
+                    }
+
+                    // write buffer and reset index; there must be 13 bytes
+                    // left, as this is the maximal number of bytes to be
+                    // written ("\uxxxx\uxxxx\0") for one code point
+                    if (string_buffer.size() - bytes < 13)
+                    {
+                        o->write_characters(string_buffer.data(), bytes);
+                        bytes = 0;
+                    }
+
+                    // remember the byte position of this accept
+                    bytes_after_last_accept = bytes;
+                    undumped_chars = 0;
+                    break;
+                }
+
+                case UTF8_REJECT:  // decode found invalid UTF-8 byte
+                {
+                    switch (error_handler)
+                    {
+                        case error_handler_t::strict:
+                        {
+                            std::stringstream ss;
+                            ss << std::uppercase << std::setfill('0') << std::setw(2) << std::hex << (byte | 0);
+                            JSON_THROW(type_error::create(316, "invalid UTF-8 byte at index " + std::to_string(i) + ": 0x" + ss.str(), BasicJsonType()));
+                        }
+
+                        case error_handler_t::ignore:
+                        case error_handler_t::replace:
+                        {
+                            // in case we saw this character the first time, we
+                            // would like to read it again, because the byte
+                            // may be OK for itself, but just not OK for the
+                            // previous sequence
+                            if (undumped_chars > 0)
+                            {
+                                --i;
+                            }
+
+                            // reset length buffer to the last accepted index;
+                            // thus removing/ignoring the invalid characters
+                            bytes = bytes_after_last_accept;
+
+                            if (error_handler == error_handler_t::replace)
+                            {
+                                // add a replacement character
+                                if (ensure_ascii)
+                                {
+                                    string_buffer[bytes++] = '\\';
+                                    string_buffer[bytes++] = 'u';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'd';
+                                }
+                                else
+                                {
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xEF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBD');
+                                }
+
+                                // write buffer and reset index; there must be 13 bytes
+                                // left, as this is the maximal number of bytes to be
+                                // written ("\uxxxx\uxxxx\0") for one code point
+                                if (string_buffer.size() - bytes < 13)
+                                {
+                                    o->write_characters(string_buffer.data(), bytes);
+                                    bytes = 0;
+                                }
+
+                                bytes_after_last_accept = bytes;
+                            }
+
+                            undumped_chars = 0;
+
+                            // continue processing the string
+                            state = UTF8_ACCEPT;
+                            break;
+                        }
+
+                        default:            // LCOV_EXCL_LINE
+                            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+
+                default:  // decode found yet incomplete multi-byte code point
+                {
+                    if (!ensure_ascii)
+                    {
+                        // code point will not be escaped - copy byte to buffer
+                        string_buffer[bytes++] = s[i];
+                    }
+                    ++undumped_chars;
+                    break;
+                }
+            }
+        }
+
+        // we finished processing the string
+        if (JSON_HEDLEY_LIKELY(state == UTF8_ACCEPT))
+        {
+            // write buffer
+            if (bytes > 0)
+            {
+                o->write_characters(string_buffer.data(), bytes);
+            }
+        }
+        else
+        {
+            // we finish reading, but do not accept: string was incomplete
+            switch (error_handler)
+            {
+                case error_handler_t::strict:
+                {
+                    std::stringstream ss;
+                    ss << std::uppercase << std::setfill('0') << std::setw(2) << std::hex << (static_cast<std::uint8_t>(s.back()) | 0);
+                    JSON_THROW(type_error::create(316, "incomplete UTF-8 string; last byte: 0x" + ss.str(), BasicJsonType()));
+                }
+
+                case error_handler_t::ignore:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    break;
+                }
+
+                case error_handler_t::replace:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    // add a replacement character
+                    if (ensure_ascii)
+                    {
+                        o->write_characters("\\ufffd", 6);
+                    }
+                    else
+                    {
+                        o->write_characters("\xEF\xBF\xBD", 3);
+                    }
+                    break;
+                }
+
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            }
+        }
+    }
+
+  private:
+    /*!
+    @brief count digits
+
+    Count the number of decimal (base 10) digits for an input unsigned integer.
+
+    @param[in] x  unsigned integer number to count its digits
+    @return    number of decimal digits
+    */
+    inline unsigned int count_digits(number_unsigned_t x) noexcept
+    {
+        unsigned int n_digits = 1;
+        for (;;)
+        {
+            if (x < 10)
+            {
+                return n_digits;
+            }
+            if (x < 100)
+            {
+                return n_digits + 1;
+            }
+            if (x < 1000)
+            {
+                return n_digits + 2;
+            }
+            if (x < 10000)
+            {
+                return n_digits + 3;
+            }
+            x = x / 10000u;
+            n_digits += 4;
+        }
+    }
+
+    // templates to avoid warnings about useless casts
+    template <typename NumberType, enable_if_t<std::is_signed<NumberType>::value, int> = 0>
+    bool is_negative_number(NumberType x)
+    {
+        return x < 0;
+    }
+
+    template < typename NumberType, enable_if_t <std::is_unsigned<NumberType>::value, int > = 0 >
+    bool is_negative_number(NumberType /*unused*/)
+    {
+        return false;
+    }
+
+    /*!
+    @brief dump an integer
+
+    Dump a given integer to output stream @a o. Works internally with
+    @a number_buffer.
+
+    @param[in] x  integer number (signed or unsigned) to dump
+    @tparam NumberType either @a number_integer_t or @a number_unsigned_t
+    */
+    template < typename NumberType, detail::enable_if_t <
+                   std::is_integral<NumberType>::value ||
+                   std::is_same<NumberType, number_unsigned_t>::value ||
+                   std::is_same<NumberType, number_integer_t>::value ||
+                   std::is_same<NumberType, binary_char_t>::value,
+                   int > = 0 >
+    void dump_integer(NumberType x)
+    {
+        static constexpr std::array<std::array<char, 2>, 100> digits_to_99
+        {
+            {
+                {{'0', '0'}}, {{'0', '1'}}, {{'0', '2'}}, {{'0', '3'}}, {{'0', '4'}}, {{'0', '5'}}, {{'0', '6'}}, {{'0', '7'}}, {{'0', '8'}}, {{'0', '9'}},
+                {{'1', '0'}}, {{'1', '1'}}, {{'1', '2'}}, {{'1', '3'}}, {{'1', '4'}}, {{'1', '5'}}, {{'1', '6'}}, {{'1', '7'}}, {{'1', '8'}}, {{'1', '9'}},
+                {{'2', '0'}}, {{'2', '1'}}, {{'2', '2'}}, {{'2', '3'}}, {{'2', '4'}}, {{'2', '5'}}, {{'2', '6'}}, {{'2', '7'}}, {{'2', '8'}}, {{'2', '9'}},
+                {{'3', '0'}}, {{'3', '1'}}, {{'3', '2'}}, {{'3', '3'}}, {{'3', '4'}}, {{'3', '5'}}, {{'3', '6'}}, {{'3', '7'}}, {{'3', '8'}}, {{'3', '9'}},
+                {{'4', '0'}}, {{'4', '1'}}, {{'4', '2'}}, {{'4', '3'}}, {{'4', '4'}}, {{'4', '5'}}, {{'4', '6'}}, {{'4', '7'}}, {{'4', '8'}}, {{'4', '9'}},
+                {{'5', '0'}}, {{'5', '1'}}, {{'5', '2'}}, {{'5', '3'}}, {{'5', '4'}}, {{'5', '5'}}, {{'5', '6'}}, {{'5', '7'}}, {{'5', '8'}}, {{'5', '9'}},
+                {{'6', '0'}}, {{'6', '1'}}, {{'6', '2'}}, {{'6', '3'}}, {{'6', '4'}}, {{'6', '5'}}, {{'6', '6'}}, {{'6', '7'}}, {{'6', '8'}}, {{'6', '9'}},
+                {{'7', '0'}}, {{'7', '1'}}, {{'7', '2'}}, {{'7', '3'}}, {{'7', '4'}}, {{'7', '5'}}, {{'7', '6'}}, {{'7', '7'}}, {{'7', '8'}}, {{'7', '9'}},
+                {{'8', '0'}}, {{'8', '1'}}, {{'8', '2'}}, {{'8', '3'}}, {{'8', '4'}}, {{'8', '5'}}, {{'8', '6'}}, {{'8', '7'}}, {{'8', '8'}}, {{'8', '9'}},
+                {{'9', '0'}}, {{'9', '1'}}, {{'9', '2'}}, {{'9', '3'}}, {{'9', '4'}}, {{'9', '5'}}, {{'9', '6'}}, {{'9', '7'}}, {{'9', '8'}}, {{'9', '9'}},
+            }
+        };
+
+        // special case for "0"
+        if (x == 0)
+        {
+            o->write_character('0');
+            return;
+        }
+
+        // use a pointer to fill the buffer
+        auto buffer_ptr = number_buffer.begin(); // NOLINT(llvm-qualified-auto,readability-qualified-auto,cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+
+        number_unsigned_t abs_value;
+
+        unsigned int n_chars{};
+
+        if (is_negative_number(x))
+        {
+            *buffer_ptr = '-';
+            abs_value = remove_sign(static_cast<number_integer_t>(x));
+
+            // account one more byte for the minus sign
+            n_chars = 1 + count_digits(abs_value);
+        }
+        else
+        {
+            abs_value = static_cast<number_unsigned_t>(x);
+            n_chars = count_digits(abs_value);
+        }
+
+        // spare 1 byte for '\0'
+        JSON_ASSERT(n_chars < number_buffer.size() - 1);
+
+        // jump to the end to generate the string from backward,
+        // so we later avoid reversing the result
+        buffer_ptr += n_chars;
+
+        // Fast int2ascii implementation inspired by "Fastware" talk by Andrei Alexandrescu
+        // See: https://www.youtube.com/watch?v=o4-CwDo2zpg
+        while (abs_value >= 100)
+        {
+            const auto digits_index = static_cast<unsigned>((abs_value % 100));
+            abs_value /= 100;
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+
+        if (abs_value >= 10)
+        {
+            const auto digits_index = static_cast<unsigned>(abs_value);
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+        else
+        {
+            *(--buffer_ptr) = static_cast<char>('0' + abs_value);
+        }
+
+        o->write_characters(number_buffer.data(), n_chars);
+    }
+
+    /*!
+    @brief dump a floating-point number
+
+    Dump a given floating-point number to output stream @a o. Works internally
+    with @a number_buffer.
+
+    @param[in] x  floating-point number to dump
+    */
+    void dump_float(number_float_t x)
+    {
+        // NaN / inf
+        if (!std::isfinite(x))
+        {
+            o->write_characters("null", 4);
+            return;
+        }
+
+        // If number_float_t is an IEEE-754 single or double precision number,
+        // use the Grisu2 algorithm to produce short numbers which are
+        // guaranteed to round-trip, using strtof and strtod, resp.
+        //
+        // NB: The test below works if <long double> == <double>.
+        static constexpr bool is_ieee_single_or_double
+            = (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 24 && std::numeric_limits<number_float_t>::max_exponent == 128) ||
+              (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 53 && std::numeric_limits<number_float_t>::max_exponent == 1024);
+
+        dump_float(x, std::integral_constant<bool, is_ieee_single_or_double>());
+    }
+
+    void dump_float(number_float_t x, std::true_type /*is_ieee_single_or_double*/)
+    {
+        auto* begin = number_buffer.data();
+        auto* end = ::nlohmann::detail::to_chars(begin, begin + number_buffer.size(), x);
+
+        o->write_characters(begin, static_cast<size_t>(end - begin));
+    }
+
+    void dump_float(number_float_t x, std::false_type /*is_ieee_single_or_double*/)
+    {
+        // get number of digits for a float -> text -> float round-trip
+        static constexpr auto d = std::numeric_limits<number_float_t>::max_digits10;
+
+        // the actual conversion
+        // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        std::ptrdiff_t len = (std::snprintf)(number_buffer.data(), number_buffer.size(), "%.*g", d, x);
+
+        // negative value indicates an error
+        JSON_ASSERT(len > 0);
+        // check if buffer was large enough
+        JSON_ASSERT(static_cast<std::size_t>(len) < number_buffer.size());
+
+        // erase thousands separator
+        if (thousands_sep != '\0')
+        {
+            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::remove returns an iterator, see https://github.com/nlohmann/json/issues/3081
+            const auto end = std::remove(number_buffer.begin(), number_buffer.begin() + len, thousands_sep);
+            std::fill(end, number_buffer.end(), '\0');
+            JSON_ASSERT((end - number_buffer.begin()) <= len);
+            len = (end - number_buffer.begin());
+        }
+
+        // convert decimal point to '.'
+        if (decimal_point != '\0' && decimal_point != '.')
+        {
+            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::find returns an iterator, see https://github.com/nlohmann/json/issues/3081
+            const auto dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
+            if (dec_pos != number_buffer.end())
+            {
+                *dec_pos = '.';
+            }
+        }
+
+        o->write_characters(number_buffer.data(), static_cast<std::size_t>(len));
+
+        // determine if we need to append ".0"
+        const bool value_is_int_like =
+            std::none_of(number_buffer.begin(), number_buffer.begin() + len + 1,
+                         [](char c)
+        {
+            return c == '.' || c == 'e';
+        });
+
+        if (value_is_int_like)
+        {
+            o->write_characters(".0", 2);
+        }
+    }
+
+    /*!
+    @brief check whether a string is UTF-8 encoded
+
+    The function checks each byte of a string whether it is UTF-8 encoded. The
+    result of the check is stored in the @a state parameter. The function must
+    be called initially with state 0 (accept). State 1 means the string must
+    be rejected, because the current byte is not allowed. If the string is
+    completely processed, but the state is non-zero, the string ended
+    prematurely; that is, the last byte indicated more bytes should have
+    followed.
+
+    @param[in,out] state  the state of the decoding
+    @param[in,out] codep  codepoint (valid only if resulting state is UTF8_ACCEPT)
+    @param[in] byte       next byte to decode
+    @return               new state
+
+    @note The function has been edited: a std::array is used.
+
+    @copyright Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+    @sa http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
+    */
+    static std::uint8_t decode(std::uint8_t& state, std::uint32_t& codep, const std::uint8_t byte) noexcept
+    {
+        static const std::array<std::uint8_t, 400> utf8d =
+        {
+            {
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7F
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9F
+                7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // A0..BF
+                8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C0..DF
+                0xA, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // E0..EF
+                0xB, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // F0..FF
+                0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
+                1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
+                1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
+                1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 // s7..s8
+            }
+        };
+
+        JSON_ASSERT(byte < utf8d.size());
+        const std::uint8_t type = utf8d[byte];
+
+        codep = (state != UTF8_ACCEPT)
+                ? (byte & 0x3fu) | (codep << 6u)
+                : (0xFFu >> type) & (byte);
+
+        std::size_t index = 256u + static_cast<size_t>(state) * 16u + static_cast<size_t>(type);
+        JSON_ASSERT(index < 400);
+        state = utf8d[index];
+        return state;
+    }
+
+    /*
+     * Overload to make the compiler happy while it is instantiating
+     * dump_integer for number_unsigned_t.
+     * Must never be called.
+     */
+    number_unsigned_t remove_sign(number_unsigned_t x)
+    {
+        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        return x; // LCOV_EXCL_LINE
+    }
+
+    /*
+     * Helper function for dump_integer
+     *
+     * This function takes a negative signed integer and returns its absolute
+     * value as unsigned integer. The plus/minus shuffling is necessary as we can
+     * not directly remove the sign of an arbitrary signed integer as the
+     * absolute values of INT_MIN and INT_MAX are usually not the same. See
+     * #1708 for details.
+     */
+    inline number_unsigned_t remove_sign(number_integer_t x) noexcept
+    {
+        JSON_ASSERT(x < 0 && x < (std::numeric_limits<number_integer_t>::max)()); // NOLINT(misc-redundant-expression)
+        return static_cast<number_unsigned_t>(-(x + 1)) + 1;
+    }
+
+  private:
+    /// the output of the serializer
+    output_adapter_t<char> o = nullptr;
+
+    /// a (hopefully) large enough character buffer
+    std::array<char, 64> number_buffer{{}};
+
+    /// the locale
+    const std::lconv* loc = nullptr;
+    /// the locale's thousand separator character
+    const char thousands_sep = '\0';
+    /// the locale's decimal point character
+    const char decimal_point = '\0';
+
+    /// string buffer
+    std::array<char, 512> string_buffer{{}};
+
+    /// the indentation character
+    const char indent_char;
+    /// the indentation string
+    string_t indent_string;
+
+    /// error_handler how to react on decoding errors
+    const error_handler_t error_handler;
+};
+}  // namespace detail
+}  // namespace nlohmann
+
+// #include <nlohmann/detail/value_t.hpp>
+
+// #include <nlohmann/json_fwd.hpp>
+
+// #include <nlohmann/ordered_map.hpp>
+
+
+#include <functional> // less
+#include <initializer_list> // initializer_list
+#include <iterator> // input_iterator_tag, iterator_traits
+#include <memory> // allocator
+#include <stdexcept> // for out_of_range
+#include <type_traits> // enable_if, is_convertible
+#include <utility> // pair
+#include <vector> // vector
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+namespace nlohmann
+{
+
+/// ordered_map: a minimal map-like container that preserves insertion order
+/// for use within nlohmann::basic_json<ordered_map>
+template <class Key, class T, class IgnoredLess = std::less<Key>,
+          class Allocator = std::allocator<std::pair<const Key, T>>>
+                  struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>
+{
+    using key_type = Key;
+    using mapped_type = T;
+    using Container = std::vector<std::pair<const Key, T>, Allocator>;
+    using iterator = typename Container::iterator;
+    using const_iterator = typename Container::const_iterator;
+    using size_type = typename Container::size_type;
+    using value_type = typename Container::value_type;
+
+    // Explicit constructors instead of `using Container::Container`
+    // otherwise older compilers choke on it (GCC <= 5.5, xcode <= 9.4)
+    ordered_map(const Allocator& alloc = Allocator()) : Container{alloc} {}
+    template <class It>
+    ordered_map(It first, It last, const Allocator& alloc = Allocator())
+        : Container{first, last, alloc} {}
+    ordered_map(std::initializer_list<T> init, const Allocator& alloc = Allocator() )
+        : Container{init, alloc} {}
+
+    std::pair<iterator, bool> emplace(const key_type& key, T&& t)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return {it, false};
+            }
+        }
+        Container::emplace_back(key, t);
+        return {--this->end(), true};
+    }
+
+    T& operator[](const Key& key)
+    {
+        return emplace(key, T{}).first->second;
+    }
+
+    const T& operator[](const Key& key) const
+    {
+        return at(key);
+    }
+
+    T& at(const Key& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    const T& at(const Key& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    size_type erase(const Key& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                // Since we cannot move const Keys, re-construct them in place
+                for (auto next = it; ++next != this->end(); ++it)
+                {
+                    it->~value_type(); // Destroy but keep allocation
+                    new (&*it) value_type{std::move(*next)};
+                }
+                Container::pop_back();
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator erase(iterator pos)
+    {
+        return erase(pos, std::next(pos));
+    }
+
+    iterator erase(iterator first, iterator last)
+    {
+        const auto elements_affected = std::distance(first, last);
+        const auto offset = std::distance(Container::begin(), first);
+
+        // This is the start situation. We need to delete elements_affected
+        // elements (3 in this example: e, f, g), and need to return an
+        // iterator past the last deleted element (h in this example).
+        // Note that offset is the distance from the start of the vector
+        // to first. We will need this later.
+
+        // [ a, b, c, d, e, f, g, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // Since we cannot move const Keys, we re-construct them in place.
+        // We start at first and re-construct (viz. copy) the elements from
+        // the back of the vector. Example for first iteration:
+
+        //               ,--------.
+        //               v        |   destroy e and re-construct with h
+        // [ a, b, c, d, e, f, g, h, i, j ]
+        //               ^        ^
+        //               it       it + elements_affected
+
+        for (auto it = first; std::next(it, elements_affected) != Container::end(); ++it)
+        {
+            it->~value_type(); // destroy but keep allocation
+            new (&*it) value_type{std::move(*std::next(it, elements_affected))}; // "move" next element to it
+        }
+
+        // [ a, b, c, d, h, i, j, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // remove the unneeded elements at the end of the vector
+        Container::resize(this->size() - static_cast<size_type>(elements_affected));
+
+        // [ a, b, c, d, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // first is now pointing past the last deleted element, but we cannot
+        // use this iterator, because it may have been invalidated by the
+        // resize call. Instead, we can return begin() + offset.
+        return Container::begin() + offset;
+    }
+
+    size_type count(const Key& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator find(const Key& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    const_iterator find(const Key& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == key)
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    std::pair<iterator, bool> insert( value_type&& value )
+    {
+        return emplace(value.first, std::move(value.second));
+    }
+
+    std::pair<iterator, bool> insert( const value_type& value )
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (it->first == value.first)
+            {
+                return {it, false};
+            }
+        }
+        Container::push_back(value);
+        return {--this->end(), true};
+    }
+
+    template<typename InputIt>
+    using require_input_iter = typename std::enable_if<std::is_convertible<typename std::iterator_traits<InputIt>::iterator_category,
+            std::input_iterator_tag>::value>::type;
+
+    template<typename InputIt, typename = require_input_iter<InputIt>>
+    void insert(InputIt first, InputIt last)
+    {
+        for (auto it = first; it != last; ++it)
+        {
+            insert(*it);
+        }
+    }
+};
+
+}  // namespace nlohmann
+
+
+#if defined(JSON_HAS_CPP_17)
+    #include <string_view>
+#endif
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+namespace nlohmann
+{
+
+/*!
+@brief a class to store JSON values
+
+@internal
+@invariant The member variables @a m_value and @a m_type have the following
+relationship:
+- If `m_type == value_t::object`, then `m_value.object != nullptr`.
+- If `m_type == value_t::array`, then `m_value.array != nullptr`.
+- If `m_type == value_t::string`, then `m_value.string != nullptr`.
+The invariants are checked by member function assert_invariant().
+
+@note ObjectType trick from https://stackoverflow.com/a/9860911
+@endinternal
+
+@since version 1.0.0
+
+@nosubgrouping
+*/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+{
+  private:
+    template<detail::value_t> friend struct detail::external_constructor;
+    friend ::nlohmann::json_pointer<basic_json>;
+
+    template<typename BasicJsonType, typename InputType>
+    friend class ::nlohmann::detail::parser;
+    friend ::nlohmann::detail::serializer<basic_json>;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::iter_impl;
+    template<typename BasicJsonType, typename CharType>
+    friend class ::nlohmann::detail::binary_writer;
+    template<typename BasicJsonType, typename InputType, typename SAX>
+    friend class ::nlohmann::detail::binary_reader;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::json_sax_dom_parser;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::json_sax_dom_callback_parser;
+    friend class ::nlohmann::detail::exception;
+
+    /// workaround type for MSVC
+    using basic_json_t = NLOHMANN_BASIC_JSON_TPL;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // convenience aliases for types residing in namespace detail;
+    using lexer = ::nlohmann::detail::lexer_base<basic_json>;
+
+    template<typename InputAdapterType>
+    static ::nlohmann::detail::parser<basic_json, InputAdapterType> parser(
+        InputAdapterType adapter,
+        detail::parser_callback_t<basic_json>cb = nullptr,
+        const bool allow_exceptions = true,
+        const bool ignore_comments = false
+                                 )
+    {
+        return ::nlohmann::detail::parser<basic_json, InputAdapterType>(std::move(adapter),
+                std::move(cb), allow_exceptions, ignore_comments);
+    }
+
+  private:
+    using primitive_iterator_t = ::nlohmann::detail::primitive_iterator_t;
+    template<typename BasicJsonType>
+    using internal_iterator = ::nlohmann::detail::internal_iterator<BasicJsonType>;
+    template<typename BasicJsonType>
+    using iter_impl = ::nlohmann::detail::iter_impl<BasicJsonType>;
+    template<typename Iterator>
+    using iteration_proxy = ::nlohmann::detail::iteration_proxy<Iterator>;
+    template<typename Base> using json_reverse_iterator = ::nlohmann::detail::json_reverse_iterator<Base>;
+
+    template<typename CharType>
+    using output_adapter_t = ::nlohmann::detail::output_adapter_t<CharType>;
+
+    template<typename InputType>
+    using binary_reader = ::nlohmann::detail::binary_reader<basic_json, InputType>;
+    template<typename CharType> using binary_writer = ::nlohmann::detail::binary_writer<basic_json, CharType>;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    using serializer = ::nlohmann::detail::serializer<basic_json>;
+
+  public:
+    using value_t = detail::value_t;
+    /// JSON Pointer, see @ref nlohmann::json_pointer
+    using json_pointer = ::nlohmann::json_pointer<basic_json>;
+    template<typename T, typename SFINAE>
+    using json_serializer = JSONSerializer<T, SFINAE>;
+    /// how to treat decoding errors
+    using error_handler_t = detail::error_handler_t;
+    /// how to treat CBOR tags
+    using cbor_tag_handler_t = detail::cbor_tag_handler_t;
+    /// helper type for initializer lists of basic_json values
+    using initializer_list_t = std::initializer_list<detail::json_ref<basic_json>>;
+
+    using input_format_t = detail::input_format_t;
+    /// SAX interface type, see @ref nlohmann::json_sax
+    using json_sax_t = json_sax<basic_json>;
+
+    ////////////////
+    // exceptions //
+    ////////////////
+
+    /// @name exceptions
+    /// Classes to implement user-defined exceptions.
+    /// @{
+
+    using exception = detail::exception;
+    using parse_error = detail::parse_error;
+    using invalid_iterator = detail::invalid_iterator;
+    using type_error = detail::type_error;
+    using out_of_range = detail::out_of_range;
+    using other_error = detail::other_error;
+
+    /// @}
+
+
+    /////////////////////
+    // container types //
+    /////////////////////
+
+    /// @name container types
+    /// The canonic container types to use @ref basic_json like any other STL
+    /// container.
+    /// @{
+
+    /// the type of elements in a basic_json container
+    using value_type = basic_json;
+
+    /// the type of an element reference
+    using reference = value_type&;
+    /// the type of an element const reference
+    using const_reference = const value_type&;
+
+    /// a type to represent differences between iterators
+    using difference_type = std::ptrdiff_t;
+    /// a type to represent container sizes
+    using size_type = std::size_t;
+
+    /// the allocator type
+    using allocator_type = AllocatorType<basic_json>;
+
+    /// the type of an element pointer
+    using pointer = typename std::allocator_traits<allocator_type>::pointer;
+    /// the type of an element const pointer
+    using const_pointer = typename std::allocator_traits<allocator_type>::const_pointer;
+
+    /// an iterator for a basic_json container
+    using iterator = iter_impl<basic_json>;
+    /// a const iterator for a basic_json container
+    using const_iterator = iter_impl<const basic_json>;
+    /// a reverse iterator for a basic_json container
+    using reverse_iterator = json_reverse_iterator<typename basic_json::iterator>;
+    /// a const reverse iterator for a basic_json container
+    using const_reverse_iterator = json_reverse_iterator<typename basic_json::const_iterator>;
+
+    /// @}
+
+
+    /// @brief returns the allocator associated with the container
+    /// @sa https://json.nlohmann.me/api/basic_json/get_allocator/
+    static allocator_type get_allocator()
+    {
+        return allocator_type();
+    }
+
+    /// @brief returns version information on the library
+    /// @sa https://json.nlohmann.me/api/basic_json/meta/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json meta()
+    {
+        basic_json result;
+
+        result["copyright"] = "(C) 2013-2022 Niels Lohmann";
+        result["name"] = "JSON for Modern C++";
+        result["url"] = "https://github.com/nlohmann/json";
+        result["version"]["string"] =
+            std::to_string(NLOHMANN_JSON_VERSION_MAJOR) + "." +
+            std::to_string(NLOHMANN_JSON_VERSION_MINOR) + "." +
+            std::to_string(NLOHMANN_JSON_VERSION_PATCH);
+        result["version"]["major"] = NLOHMANN_JSON_VERSION_MAJOR;
+        result["version"]["minor"] = NLOHMANN_JSON_VERSION_MINOR;
+        result["version"]["patch"] = NLOHMANN_JSON_VERSION_PATCH;
+
+#ifdef _WIN32
+        result["platform"] = "win32";
+#elif defined __linux__
+        result["platform"] = "linux";
+#elif defined __APPLE__
+        result["platform"] = "apple";
+#elif defined __unix__
+        result["platform"] = "unix";
+#else
+        result["platform"] = "unknown";
+#endif
+
+#if defined(__ICC) || defined(__INTEL_COMPILER)
+        result["compiler"] = {{"family", "icc"}, {"version", __INTEL_COMPILER}};
+#elif defined(__clang__)
+        result["compiler"] = {{"family", "clang"}, {"version", __clang_version__}};
+#elif defined(__GNUC__) || defined(__GNUG__)
+        result["compiler"] = {{"family", "gcc"}, {"version", std::to_string(__GNUC__) + "." + std::to_string(__GNUC_MINOR__) + "." + std::to_string(__GNUC_PATCHLEVEL__)}};
+#elif defined(__HP_cc) || defined(__HP_aCC)
+        result["compiler"] = "hp"
+#elif defined(__IBMCPP__)
+        result["compiler"] = {{"family", "ilecpp"}, {"version", __IBMCPP__}};
+#elif defined(_MSC_VER)
+        result["compiler"] = {{"family", "msvc"}, {"version", _MSC_VER}};
+#elif defined(__PGI)
+        result["compiler"] = {{"family", "pgcpp"}, {"version", __PGI}};
+#elif defined(__SUNPRO_CC)
+        result["compiler"] = {{"family", "sunpro"}, {"version", __SUNPRO_CC}};
+#else
+        result["compiler"] = {{"family", "unknown"}, {"version", "unknown"}};
+#endif
+
+#ifdef __cplusplus
+        result["compiler"]["c++"] = std::to_string(__cplusplus);
+#else
+        result["compiler"]["c++"] = "unknown";
+#endif
+        return result;
+    }
+
+
+    ///////////////////////////
+    // JSON value data types //
+    ///////////////////////////
+
+    /// @name JSON value data types
+    /// The data types to store a JSON value. These types are derived from
+    /// the template arguments passed to class @ref basic_json.
+    /// @{
+
+    /// @brief object key comparator type
+    /// @sa https://json.nlohmann.me/api/basic_json/object_comparator_t/
+#if defined(JSON_HAS_CPP_14)
+    // Use transparent comparator if possible, combined with perfect forwarding
+    // on find() and count() calls prevents unnecessary string construction.
+    using object_comparator_t = std::less<>;
+#else
+    using object_comparator_t = std::less<StringType>;
+#endif
+
+    /// @brief a type for an object
+    /// @sa https://json.nlohmann.me/api/basic_json/object_t/
+    using object_t = ObjectType<StringType,
+          basic_json,
+          object_comparator_t,
+          AllocatorType<std::pair<const StringType,
+          basic_json>>>;
+
+    /// @brief a type for an array
+    /// @sa https://json.nlohmann.me/api/basic_json/array_t/
+    using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
+
+    /// @brief a type for a string
+    /// @sa https://json.nlohmann.me/api/basic_json/string_t/
+    using string_t = StringType;
+
+    /// @brief a type for a boolean
+    /// @sa https://json.nlohmann.me/api/basic_json/boolean_t/
+    using boolean_t = BooleanType;
+
+    /// @brief a type for a number (integer)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_integer_t/
+    using number_integer_t = NumberIntegerType;
+
+    /// @brief a type for a number (unsigned)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_unsigned_t/
+    using number_unsigned_t = NumberUnsignedType;
+
+    /// @brief a type for a number (floating-point)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_float_t/
+    using number_float_t = NumberFloatType;
+
+    /// @brief a type for a packed binary type
+    /// @sa https://json.nlohmann.me/api/basic_json/binary_t/
+    using binary_t = nlohmann::byte_container_with_subtype<BinaryType>;
+
+    /// @}
+
+  private:
+
+    /// helper for exception-safe object creation
+    template<typename T, typename... Args>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    static T* create(Args&& ... args)
+    {
+        AllocatorType<T> alloc;
+        using AllocatorTraits = std::allocator_traits<AllocatorType<T>>;
+
+        auto deleter = [&](T * obj)
+        {
+            AllocatorTraits::deallocate(alloc, obj, 1);
+        };
+        std::unique_ptr<T, decltype(deleter)> obj(AllocatorTraits::allocate(alloc, 1), deleter);
+        AllocatorTraits::construct(alloc, obj.get(), std::forward<Args>(args)...);
+        JSON_ASSERT(obj != nullptr);
+        return obj.release();
+    }
+
+    ////////////////////////
+    // JSON value storage //
+    ////////////////////////
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief a JSON value
+
+    The actual storage for a JSON value of the @ref basic_json class. This
+    union combines the different storage types for the JSON value types
+    defined in @ref value_t.
+
+    JSON type | value_t type    | used type
+    --------- | --------------- | ------------------------
+    object    | object          | pointer to @ref object_t
+    array     | array           | pointer to @ref array_t
+    string    | string          | pointer to @ref string_t
+    boolean   | boolean         | @ref boolean_t
+    number    | number_integer  | @ref number_integer_t
+    number    | number_unsigned | @ref number_unsigned_t
+    number    | number_float    | @ref number_float_t
+    binary    | binary          | pointer to @ref binary_t
+    null      | null            | *no value is stored*
+
+    @note Variable-length types (objects, arrays, and strings) are stored as
+    pointers. The size of the union should not exceed 64 bits if the default
+    value types are used.
+
+    @since version 1.0.0
+    */
+    union json_value
+    {
+        /// object (stored with pointer to save storage)
+        object_t* object;
+        /// array (stored with pointer to save storage)
+        array_t* array;
+        /// string (stored with pointer to save storage)
+        string_t* string;
+        /// binary (stored with pointer to save storage)
+        binary_t* binary;
+        /// boolean
+        boolean_t boolean;
+        /// number (integer)
+        number_integer_t number_integer;
+        /// number (unsigned integer)
+        number_unsigned_t number_unsigned;
+        /// number (floating-point)
+        number_float_t number_float;
+
+        /// default constructor (for null values)
+        json_value() = default;
+        /// constructor for booleans
+        json_value(boolean_t v) noexcept : boolean(v) {}
+        /// constructor for numbers (integer)
+        json_value(number_integer_t v) noexcept : number_integer(v) {}
+        /// constructor for numbers (unsigned)
+        json_value(number_unsigned_t v) noexcept : number_unsigned(v) {}
+        /// constructor for numbers (floating-point)
+        json_value(number_float_t v) noexcept : number_float(v) {}
+        /// constructor for empty values of a given type
+        json_value(value_t t)
+        {
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    object = create<object_t>();
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    array = create<array_t>();
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    string = create<string_t>("");
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    binary = create<binary_t>();
+                    break;
+                }
+
+                case value_t::boolean:
+                {
+                    boolean = static_cast<boolean_t>(false);
+                    break;
+                }
+
+                case value_t::number_integer:
+                {
+                    number_integer = static_cast<number_integer_t>(0);
+                    break;
+                }
+
+                case value_t::number_unsigned:
+                {
+                    number_unsigned = static_cast<number_unsigned_t>(0);
+                    break;
+                }
+
+                case value_t::number_float:
+                {
+                    number_float = static_cast<number_float_t>(0.0);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    break;
+                }
+
+                case value_t::discarded:
+                default:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    if (JSON_HEDLEY_UNLIKELY(t == value_t::null))
+                    {
+                        JSON_THROW(other_error::create(500, "961c151d2e87f2686a955a9be24d316f1362bf21 3.10.5", basic_json())); // LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+            }
+        }
+
+        /// constructor for strings
+        json_value(const string_t& value) : string(create<string_t>(value)) {}
+
+        /// constructor for rvalue strings
+        json_value(string_t&& value) : string(create<string_t>(std::move(value))) {}
+
+        /// constructor for objects
+        json_value(const object_t& value) : object(create<object_t>(value)) {}
+
+        /// constructor for rvalue objects
+        json_value(object_t&& value) : object(create<object_t>(std::move(value))) {}
+
+        /// constructor for arrays
+        json_value(const array_t& value) : array(create<array_t>(value)) {}
+
+        /// constructor for rvalue arrays
+        json_value(array_t&& value) : array(create<array_t>(std::move(value))) {}
+
+        /// constructor for binary arrays
+        json_value(const typename binary_t::container_type& value) : binary(create<binary_t>(value)) {}
+
+        /// constructor for rvalue binary arrays
+        json_value(typename binary_t::container_type&& value) : binary(create<binary_t>(std::move(value))) {}
+
+        /// constructor for binary arrays (internal type)
+        json_value(const binary_t& value) : binary(create<binary_t>(value)) {}
+
+        /// constructor for rvalue binary arrays (internal type)
+        json_value(binary_t&& value) : binary(create<binary_t>(std::move(value))) {}
+
+        void destroy(value_t t)
+        {
+            if (t == value_t::array || t == value_t::object)
+            {
+                // flatten the current json_value to a heap-allocated stack
+                std::vector<basic_json> stack;
+
+                // move the top-level items to stack
+                if (t == value_t::array)
+                {
+                    stack.reserve(array->size());
+                    std::move(array->begin(), array->end(), std::back_inserter(stack));
+                }
+                else
+                {
+                    stack.reserve(object->size());
+                    for (auto&& it : *object)
+                    {
+                        stack.push_back(std::move(it.second));
+                    }
+                }
+
+                while (!stack.empty())
+                {
+                    // move the last item to local variable to be processed
+                    basic_json current_item(std::move(stack.back()));
+                    stack.pop_back();
+
+                    // if current_item is array/object, move
+                    // its children to the stack to be processed later
+                    if (current_item.is_array())
+                    {
+                        std::move(current_item.m_value.array->begin(), current_item.m_value.array->end(), std::back_inserter(stack));
+
+                        current_item.m_value.array->clear();
+                    }
+                    else if (current_item.is_object())
+                    {
+                        for (auto&& it : *current_item.m_value.object)
+                        {
+                            stack.push_back(std::move(it.second));
+                        }
+
+                        current_item.m_value.object->clear();
+                    }
+
+                    // it's now safe that current_item get destructed
+                    // since it doesn't have any children
+                }
+            }
+
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    AllocatorType<object_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, object);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, object, 1);
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    AllocatorType<array_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, array);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, array, 1);
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, string, 1);
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, binary, 1);
+                    break;
+                }
+
+                case value_t::null:
+                case value_t::boolean:
+                case value_t::number_integer:
+                case value_t::number_unsigned:
+                case value_t::number_float:
+                case value_t::discarded:
+                default:
+                {
+                    break;
+                }
+            }
+        }
+    };
+
+  private:
+    /*!
+    @brief checks the class invariants
+
+    This function asserts the class invariants. It needs to be called at the
+    end of every constructor to make sure that created objects respect the
+    invariant. Furthermore, it has to be called each time the type of a JSON
+    value is changed, because the invariant expresses a relationship between
+    @a m_type and @a m_value.
+
+    Furthermore, the parent relation is checked for arrays and objects: If
+    @a check_parents true and the value is an array or object, then the
+    container's elements must have the current value as parent.
+
+    @param[in] check_parents  whether the parent relation should be checked.
+               The value is true by default and should only be set to false
+               during destruction of objects when the invariant does not
+               need to hold.
+    */
+    void assert_invariant(bool check_parents = true) const noexcept
+    {
+        JSON_ASSERT(m_type != value_t::object || m_value.object != nullptr);
+        JSON_ASSERT(m_type != value_t::array || m_value.array != nullptr);
+        JSON_ASSERT(m_type != value_t::string || m_value.string != nullptr);
+        JSON_ASSERT(m_type != value_t::binary || m_value.binary != nullptr);
+
+#if JSON_DIAGNOSTICS
+        JSON_TRY
+        {
+            // cppcheck-suppress assertWithSideEffect
+            JSON_ASSERT(!check_parents || !is_structured() || std::all_of(begin(), end(), [this](const basic_json & j)
+            {
+                return j.m_parent == this;
+            }));
+        }
+        JSON_CATCH(...) {} // LCOV_EXCL_LINE
+#endif
+        static_cast<void>(check_parents);
+    }
+
+    void set_parents()
+    {
+#if JSON_DIAGNOSTICS
+        switch (m_type)
+        {
+            case value_t::array:
+            {
+                for (auto& element : *m_value.array)
+                {
+                    element.m_parent = this;
+                }
+                break;
+            }
+
+            case value_t::object:
+            {
+                for (auto& element : *m_value.object)
+                {
+                    element.second.m_parent = this;
+                }
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                break;
+        }
+#endif
+    }
+
+    iterator set_parents(iterator it, typename iterator::difference_type count_set_parents)
+    {
+#if JSON_DIAGNOSTICS
+        for (typename iterator::difference_type i = 0; i < count_set_parents; ++i)
+        {
+            (it + i)->m_parent = this;
+        }
+#else
+        static_cast<void>(count_set_parents);
+#endif
+        return it;
+    }
+
+    reference set_parent(reference j, std::size_t old_capacity = static_cast<std::size_t>(-1))
+    {
+#if JSON_DIAGNOSTICS
+        if (old_capacity != static_cast<std::size_t>(-1))
+        {
+            // see https://github.com/nlohmann/json/issues/2838
+            JSON_ASSERT(type() == value_t::array);
+            if (JSON_HEDLEY_UNLIKELY(m_value.array->capacity() != old_capacity))
+            {
+                // capacity has changed: update all parents
+                set_parents();
+                return j;
+            }
+        }
+
+        // ordered_json uses a vector internally, so pointers could have
+        // been invalidated; see https://github.com/nlohmann/json/issues/2962
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning(push )
+#pragma warning(disable : 4127) // ignore warning to replace if with if constexpr
+#endif
+        if (detail::is_ordered_map<object_t>::value)
+        {
+            set_parents();
+            return j;
+        }
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning( pop )
+#endif
+
+        j.m_parent = this;
+#else
+        static_cast<void>(j);
+        static_cast<void>(old_capacity);
+#endif
+        return j;
+    }
+
+  public:
+    //////////////////////////
+    // JSON parser callback //
+    //////////////////////////
+
+    /// @brief parser event types
+    /// @sa https://json.nlohmann.me/api/basic_json/parse_event_t/
+    using parse_event_t = detail::parse_event_t;
+
+    /// @brief per-element parser callback type
+    /// @sa https://json.nlohmann.me/api/basic_json/parser_callback_t/
+    using parser_callback_t = detail::parser_callback_t<basic_json>;
+
+    //////////////////
+    // constructors //
+    //////////////////
+
+    /// @name constructors and destructors
+    /// Constructors of class @ref basic_json, copy/move constructor, copy
+    /// assignment, static functions creating objects, and the destructor.
+    /// @{
+
+    /// @brief create an empty value with a given type
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(const value_t v)
+        : m_type(v), m_value(v)
+    {
+        assert_invariant();
+    }
+
+    /// @brief create a null object
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(std::nullptr_t = nullptr) noexcept
+        : basic_json(value_t::null)
+    {
+        assert_invariant();
+    }
+
+    /// @brief create a JSON value from compatible types
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < typename CompatibleType,
+               typename U = detail::uncvref_t<CompatibleType>,
+               detail::enable_if_t <
+                   !detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
+    basic_json(CompatibleType && val) noexcept(noexcept( // NOLINT(bugprone-forwarding-reference-overload,bugprone-exception-escape)
+                JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
+                                           std::forward<CompatibleType>(val))))
+    {
+        JSONSerializer<U>::to_json(*this, std::forward<CompatibleType>(val));
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief create a JSON value from an existing one
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value&& !std::is_same<basic_json, BasicJsonType>::value, int > = 0 >
+    basic_json(const BasicJsonType& val)
+    {
+        using other_boolean_t = typename BasicJsonType::boolean_t;
+        using other_number_float_t = typename BasicJsonType::number_float_t;
+        using other_number_integer_t = typename BasicJsonType::number_integer_t;
+        using other_number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+        using other_string_t = typename BasicJsonType::string_t;
+        using other_object_t = typename BasicJsonType::object_t;
+        using other_array_t = typename BasicJsonType::array_t;
+        using other_binary_t = typename BasicJsonType::binary_t;
+
+        switch (val.type())
+        {
+            case value_t::boolean:
+                JSONSerializer<other_boolean_t>::to_json(*this, val.template get<other_boolean_t>());
+                break;
+            case value_t::number_float:
+                JSONSerializer<other_number_float_t>::to_json(*this, val.template get<other_number_float_t>());
+                break;
+            case value_t::number_integer:
+                JSONSerializer<other_number_integer_t>::to_json(*this, val.template get<other_number_integer_t>());
+                break;
+            case value_t::number_unsigned:
+                JSONSerializer<other_number_unsigned_t>::to_json(*this, val.template get<other_number_unsigned_t>());
+                break;
+            case value_t::string:
+                JSONSerializer<other_string_t>::to_json(*this, val.template get_ref<const other_string_t&>());
+                break;
+            case value_t::object:
+                JSONSerializer<other_object_t>::to_json(*this, val.template get_ref<const other_object_t&>());
+                break;
+            case value_t::array:
+                JSONSerializer<other_array_t>::to_json(*this, val.template get_ref<const other_array_t&>());
+                break;
+            case value_t::binary:
+                JSONSerializer<other_binary_t>::to_json(*this, val.template get_ref<const other_binary_t&>());
+                break;
+            case value_t::null:
+                *this = nullptr;
+                break;
+            case value_t::discarded:
+                m_type = value_t::discarded;
+                break;
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief create a container (array or object) from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(initializer_list_t init,
+               bool type_deduction = true,
+               value_t manual_type = value_t::array)
+    {
+        // check if each element is an array with two elements whose first
+        // element is a string
+        bool is_an_object = std::all_of(init.begin(), init.end(),
+                                        [](const detail::json_ref<basic_json>& element_ref)
+        {
+            return element_ref->is_array() && element_ref->size() == 2 && (*element_ref)[0].is_string();
+        });
+
+        // adjust type if type deduction is not wanted
+        if (!type_deduction)
+        {
+            // if array is wanted, do not create an object though possible
+            if (manual_type == value_t::array)
+            {
+                is_an_object = false;
+            }
+
+            // if object is wanted but impossible, throw an exception
+            if (JSON_HEDLEY_UNLIKELY(manual_type == value_t::object && !is_an_object))
+            {
+                JSON_THROW(type_error::create(301, "cannot create object from initializer list", basic_json()));
+            }
+        }
+
+        if (is_an_object)
+        {
+            // the initializer list is a list of pairs -> create object
+            m_type = value_t::object;
+            m_value = value_t::object;
+
+            for (auto& element_ref : init)
+            {
+                auto element = element_ref.moved_or_copied();
+                m_value.object->emplace(
+                    std::move(*((*element.m_value.array)[0].m_value.string)),
+                    std::move((*element.m_value.array)[1]));
+            }
+        }
+        else
+        {
+            // the initializer list describes an array -> create array
+            m_type = value_t::array;
+            m_value.array = create<array_t>(init.begin(), init.end());
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief explicitly create a binary array (without subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init)
+    {
+        auto res = basic_json();
+        res.m_type = value_t::binary;
+        res.m_value = init;
+        return res;
+    }
+
+    /// @brief explicitly create a binary array (with subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init, typename binary_t::subtype_type subtype)
+    {
+        auto res = basic_json();
+        res.m_type = value_t::binary;
+        res.m_value = binary_t(init, subtype);
+        return res;
+    }
+
+    /// @brief explicitly create a binary array
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init)
+    {
+        auto res = basic_json();
+        res.m_type = value_t::binary;
+        res.m_value = std::move(init);
+        return res;
+    }
+
+    /// @brief explicitly create a binary array (with subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init, typename binary_t::subtype_type subtype)
+    {
+        auto res = basic_json();
+        res.m_type = value_t::binary;
+        res.m_value = binary_t(std::move(init), subtype);
+        return res;
+    }
+
+    /// @brief explicitly create an array from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/array/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json array(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::array);
+    }
+
+    /// @brief explicitly create an object from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/object/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json object(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::object);
+    }
+
+    /// @brief construct an array with count copies of given value
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(size_type cnt, const basic_json& val)
+        : m_type(value_t::array)
+    {
+        m_value.array = create<array_t>(cnt, val);
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief construct a JSON container given an iterator range
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < class InputIT, typename std::enable_if <
+                   std::is_same<InputIT, typename basic_json_t::iterator>::value ||
+                   std::is_same<InputIT, typename basic_json_t::const_iterator>::value, int >::type = 0 >
+    basic_json(InputIT first, InputIT last)
+    {
+        JSON_ASSERT(first.m_object != nullptr);
+        JSON_ASSERT(last.m_object != nullptr);
+
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(201, "iterators are not compatible", basic_json()));
+        }
+
+        // copy type from first iterator
+        m_type = first.m_object->m_type;
+
+        // check if iterator range is complete for primitive values
+        switch (m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!first.m_it.primitive_iterator.is_begin()
+                                         || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", *first.m_object));
+                }
+                break;
+            }
+
+            case value_t::null:
+            case value_t::object:
+            case value_t::array:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                break;
+        }
+
+        switch (m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_value.number_integer = first.m_object->m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_value.number_unsigned = first.m_object->m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_value.number_float = first.m_object->m_value.number_float;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_value.boolean = first.m_object->m_value.boolean;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_value = *first.m_object->m_value.string;
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_value.object = create<object_t>(first.m_it.object_iterator,
+                                                  last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_value.array = create<array_t>(first.m_it.array_iterator,
+                                                last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_value = *first.m_object->m_value.binary;
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(invalid_iterator::create(206, "cannot construct with iterators from " + std::string(first.m_object->type_name()), *first.m_object));
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+
+    ///////////////////////////////////////
+    // other constructors and destructor //
+    ///////////////////////////////////////
+
+    template<typename JsonRef,
+             detail::enable_if_t<detail::conjunction<detail::is_json_ref<JsonRef>,
+                                 std::is_same<typename JsonRef::value_type, basic_json>>::value, int> = 0 >
+    basic_json(const JsonRef& ref) : basic_json(ref.moved_or_copied()) {}
+
+    /// @brief copy constructor
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(const basic_json& other)
+        : m_type(other.m_type)
+    {
+        // check of passed value is valid
+        other.assert_invariant();
+
+        switch (m_type)
+        {
+            case value_t::object:
+            {
+                m_value = *other.m_value.object;
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_value = *other.m_value.array;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_value = *other.m_value.string;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_value = other.m_value.boolean;
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                m_value = other.m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_value = other.m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_value = other.m_value.number_float;
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_value = *other.m_value.binary;
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                break;
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief move constructor
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(basic_json&& other) noexcept
+        : m_type(std::move(other.m_type)),
+          m_value(std::move(other.m_value))
+    {
+        // check that passed value is valid
+        other.assert_invariant(false);
+
+        // invalidate payload
+        other.m_type = value_t::null;
+        other.m_value = {};
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief copy assignment
+    /// @sa https://json.nlohmann.me/api/basic_json/operator=/
+    basic_json& operator=(basic_json other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        // check that passed value is valid
+        other.assert_invariant();
+
+        using std::swap;
+        swap(m_type, other.m_type);
+        swap(m_value, other.m_value);
+
+        set_parents();
+        assert_invariant();
+        return *this;
+    }
+
+    /// @brief destructor
+    /// @sa https://json.nlohmann.me/api/basic_json/~basic_json/
+    ~basic_json() noexcept
+    {
+        assert_invariant(false);
+        m_value.destroy(m_type);
+    }
+
+    /// @}
+
+  public:
+    ///////////////////////
+    // object inspection //
+    ///////////////////////
+
+    /// @name object inspection
+    /// Functions to inspect the type of a JSON value.
+    /// @{
+
+    /// @brief serialization
+    /// @sa https://json.nlohmann.me/api/basic_json/dump/
+    string_t dump(const int indent = -1,
+                  const char indent_char = ' ',
+                  const bool ensure_ascii = false,
+                  const error_handler_t error_handler = error_handler_t::strict) const
+    {
+        string_t result;
+        serializer s(detail::output_adapter<char, string_t>(result), indent_char, error_handler);
+
+        if (indent >= 0)
+        {
+            s.dump(*this, true, ensure_ascii, static_cast<unsigned int>(indent));
+        }
+        else
+        {
+            s.dump(*this, false, ensure_ascii, 0);
+        }
+
+        return result;
+    }
+
+    /// @brief return the type of the JSON value (explicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/type/
+    constexpr value_t type() const noexcept
+    {
+        return m_type;
+    }
+
+    /// @brief return whether type is primitive
+    /// @sa https://json.nlohmann.me/api/basic_json/is_primitive/
+    constexpr bool is_primitive() const noexcept
+    {
+        return is_null() || is_string() || is_boolean() || is_number() || is_binary();
+    }
+
+    /// @brief return whether type is structured
+    /// @sa https://json.nlohmann.me/api/basic_json/is_structured/
+    constexpr bool is_structured() const noexcept
+    {
+        return is_array() || is_object();
+    }
+
+    /// @brief return whether value is null
+    /// @sa https://json.nlohmann.me/api/basic_json/is_null/
+    constexpr bool is_null() const noexcept
+    {
+        return m_type == value_t::null;
+    }
+
+    /// @brief return whether value is a boolean
+    /// @sa https://json.nlohmann.me/api/basic_json/is_boolean/
+    constexpr bool is_boolean() const noexcept
+    {
+        return m_type == value_t::boolean;
+    }
+
+    /// @brief return whether value is a number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number/
+    constexpr bool is_number() const noexcept
+    {
+        return is_number_integer() || is_number_float();
+    }
+
+    /// @brief return whether value is an integer number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_integer/
+    constexpr bool is_number_integer() const noexcept
+    {
+        return m_type == value_t::number_integer || m_type == value_t::number_unsigned;
+    }
+
+    /// @brief return whether value is an unsigned integer number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_unsigned/
+    constexpr bool is_number_unsigned() const noexcept
+    {
+        return m_type == value_t::number_unsigned;
+    }
+
+    /// @brief return whether value is a floating-point number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_float/
+    constexpr bool is_number_float() const noexcept
+    {
+        return m_type == value_t::number_float;
+    }
+
+    /// @brief return whether value is an object
+    /// @sa https://json.nlohmann.me/api/basic_json/is_object/
+    constexpr bool is_object() const noexcept
+    {
+        return m_type == value_t::object;
+    }
+
+    /// @brief return whether value is an array
+    /// @sa https://json.nlohmann.me/api/basic_json/is_array/
+    constexpr bool is_array() const noexcept
+    {
+        return m_type == value_t::array;
+    }
+
+    /// @brief return whether value is a string
+    /// @sa https://json.nlohmann.me/api/basic_json/is_string/
+    constexpr bool is_string() const noexcept
+    {
+        return m_type == value_t::string;
+    }
+
+    /// @brief return whether value is a binary array
+    /// @sa https://json.nlohmann.me/api/basic_json/is_binary/
+    constexpr bool is_binary() const noexcept
+    {
+        return m_type == value_t::binary;
+    }
+
+    /// @brief return whether value is discarded
+    /// @sa https://json.nlohmann.me/api/basic_json/is_discarded/
+    constexpr bool is_discarded() const noexcept
+    {
+        return m_type == value_t::discarded;
+    }
+
+    /// @brief return the type of the JSON value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_value_t/
+    constexpr operator value_t() const noexcept
+    {
+        return m_type;
+    }
+
+    /// @}
+
+  private:
+    //////////////////
+    // value access //
+    //////////////////
+
+    /// get a boolean (explicit)
+    boolean_t get_impl(boolean_t* /*unused*/) const
+    {
+        if (JSON_HEDLEY_LIKELY(is_boolean()))
+        {
+            return m_value.boolean;
+        }
+
+        JSON_THROW(type_error::create(302, "type must be boolean, but is " + std::string(type_name()), *this));
+    }
+
+    /// get a pointer to the value (object)
+    object_t* get_impl_ptr(object_t* /*unused*/) noexcept
+    {
+        return is_object() ? m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (object)
+    constexpr const object_t* get_impl_ptr(const object_t* /*unused*/) const noexcept
+    {
+        return is_object() ? m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    array_t* get_impl_ptr(array_t* /*unused*/) noexcept
+    {
+        return is_array() ? m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    constexpr const array_t* get_impl_ptr(const array_t* /*unused*/) const noexcept
+    {
+        return is_array() ? m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    string_t* get_impl_ptr(string_t* /*unused*/) noexcept
+    {
+        return is_string() ? m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    constexpr const string_t* get_impl_ptr(const string_t* /*unused*/) const noexcept
+    {
+        return is_string() ? m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    boolean_t* get_impl_ptr(boolean_t* /*unused*/) noexcept
+    {
+        return is_boolean() ? &m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    constexpr const boolean_t* get_impl_ptr(const boolean_t* /*unused*/) const noexcept
+    {
+        return is_boolean() ? &m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    number_integer_t* get_impl_ptr(number_integer_t* /*unused*/) noexcept
+    {
+        return is_number_integer() ? &m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    constexpr const number_integer_t* get_impl_ptr(const number_integer_t* /*unused*/) const noexcept
+    {
+        return is_number_integer() ? &m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    number_unsigned_t* get_impl_ptr(number_unsigned_t* /*unused*/) noexcept
+    {
+        return is_number_unsigned() ? &m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    constexpr const number_unsigned_t* get_impl_ptr(const number_unsigned_t* /*unused*/) const noexcept
+    {
+        return is_number_unsigned() ? &m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    number_float_t* get_impl_ptr(number_float_t* /*unused*/) noexcept
+    {
+        return is_number_float() ? &m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    constexpr const number_float_t* get_impl_ptr(const number_float_t* /*unused*/) const noexcept
+    {
+        return is_number_float() ? &m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    binary_t* get_impl_ptr(binary_t* /*unused*/) noexcept
+    {
+        return is_binary() ? m_value.binary : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    constexpr const binary_t* get_impl_ptr(const binary_t* /*unused*/) const noexcept
+    {
+        return is_binary() ? m_value.binary : nullptr;
+    }
+
+    /*!
+    @brief helper function to implement get_ref()
+
+    This function helps to implement get_ref() without code duplication for
+    const and non-const overloads
+
+    @tparam ThisType will be deduced as `basic_json` or `const basic_json`
+
+    @throw type_error.303 if ReferenceType does not match underlying value
+    type of the current JSON
+    */
+    template<typename ReferenceType, typename ThisType>
+    static ReferenceType get_ref_impl(ThisType& obj)
+    {
+        // delegate the call to get_ptr<>()
+        auto* ptr = obj.template get_ptr<typename std::add_pointer<ReferenceType>::type>();
+
+        if (JSON_HEDLEY_LIKELY(ptr != nullptr))
+        {
+            return *ptr;
+        }
+
+        JSON_THROW(type_error::create(303, "incompatible ReferenceType for get_ref, actual type is " + std::string(obj.type_name()), obj));
+    }
+
+  public:
+    /// @name value access
+    /// Direct access to the stored value of a JSON value.
+    /// @{
+
+    /// @brief get a pointer value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get_ptr() noexcept -> decltype(std::declval<basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>()
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+    /// @brief get a pointer value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
+    template < typename PointerType, typename std::enable_if <
+                   std::is_pointer<PointerType>::value&&
+                   std::is_const<typename std::remove_pointer<PointerType>::type>::value, int >::type = 0 >
+    constexpr auto get_ptr() const noexcept -> decltype(std::declval<const basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>() const
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+  private:
+    /*!
+    @brief get a value (explicit)
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    ValueType ret;
+    JSONSerializer<ValueType>::from_json(*this, ret);
+    return ret;
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json,
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `void from_json(const basic_json&, ValueType&)`, and
+    - @ref json_serializer<ValueType> does not have a `from_json()` method of
+      the form `ValueType from_json(const basic_json&)`
+
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,get__ValueType_const}
+
+    @since version 2.1.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   detail::is_default_constructible<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get_impl(detail::priority_tag<0> /*unused*/) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), std::declval<ValueType&>())))
+    {
+        auto ret = ValueType();
+        JSONSerializer<ValueType>::from_json(*this, ret);
+        return ret;
+    }
+
+    /*!
+    @brief get a value (explicit); special case
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is **not** [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and **not** [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    return JSONSerializer<ValueType>::from_json(*this);
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json and
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `ValueType from_json(const basic_json&)`
+
+    @note If @ref json_serializer<ValueType> has both overloads of
+    `from_json()`, this one is chosen.
+
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @since version 2.1.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   detail::has_non_default_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get_impl(detail::priority_tag<1> /*unused*/) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>())))
+    {
+        return JSONSerializer<ValueType>::from_json(*this);
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads converts the current @ref basic_json in a different
+    @ref basic_json type
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this, converted into @a BasicJsonType
+
+    @complexity Depending on the implementation of the called `from_json()`
+                method.
+
+    @since version 3.2.0
+    */
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value,
+                   int > = 0 >
+    BasicJsonType get_impl(detail::priority_tag<2> /*unused*/) const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads avoids a lot of template boilerplate, it can be seen as the
+    identity method
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this
+
+    @complexity Constant.
+
+    @since version 2.1.0
+    */
+    template<typename BasicJsonType,
+             detail::enable_if_t<
+                 std::is_same<BasicJsonType, basic_json_t>::value,
+                 int> = 0>
+    basic_json get_impl(detail::priority_tag<3> /*unused*/) const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+    @copydoc get()
+    */
+    template<typename PointerType,
+             detail::enable_if_t<
+                 std::is_pointer<PointerType>::value,
+                 int> = 0>
+    constexpr auto get_impl(detail::priority_tag<4> /*unused*/) const noexcept
+    -> decltype(std::declval<const basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+  public:
+    /*!
+    @brief get a (pointer) value (explicit)
+
+    Performs explicit type conversion between the JSON value and a compatible value if required.
+
+    - If the requested type is a pointer to the internally stored JSON value that pointer is returned.
+    No copies are made.
+
+    - If the requested type is the current @ref basic_json, or a different @ref basic_json convertible
+    from the current @ref basic_json.
+
+    - Otherwise the value is converted by calling the @ref json_serializer<ValueType> `from_json()`
+    method.
+
+    @tparam ValueTypeCV the provided value type
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @tparam ValueType if necessary
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws if conversion is required
+
+    @since version 2.1.0
+    */
+    template < typename ValueTypeCV, typename ValueType = detail::uncvref_t<ValueTypeCV>>
+#if defined(JSON_HAS_CPP_14)
+    constexpr
+#endif
+    auto get() const noexcept(
+    noexcept(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {})))
+    -> decltype(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {}))
+    {
+        // we cannot static_assert on ValueTypeCV being non-const, because
+        // there is support for get<const basic_json_t>(), which is why we
+        // still need the uncvref
+        static_assert(!std::is_reference<ValueTypeCV>::value,
+                      "get() cannot be used with reference types, you might want to use get_ref()");
+        return get_impl<ValueType>(detail::priority_tag<4> {});
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+
+    Explicit pointer access to the internally stored JSON value. No copies are
+    made.
+
+    @warning The pointer becomes invalid if the underlying JSON object
+    changes.
+
+    @tparam PointerType pointer type; must be a pointer to @ref array_t, @ref
+    object_t, @ref string_t, @ref boolean_t, @ref number_integer_t,
+    @ref number_unsigned_t, or @ref number_float_t.
+
+    @return pointer to the internally stored JSON value if the requested
+    pointer type @a PointerType fits to the JSON value; `nullptr` otherwise
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how pointers to internal values of a
+    JSON value can be requested. Note that no type conversions are made and a
+    `nullptr` is returned if the value and the requested pointer type does not
+    match.,get__PointerType}
+
+    @sa see @ref get_ptr() for explicit pointer-member access
+
+    @since version 1.0.0
+    */
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get() noexcept -> decltype(std::declval<basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+    /// @brief get a value (explicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_to/
+    template < typename ValueType,
+               detail::enable_if_t <
+                   !detail::is_basic_json<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType & get_to(ValueType& v) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<ValueType>::from_json(*this, v);
+        return v;
+    }
+
+    // specialization to allow calling get_to with a basic_json value
+    // see https://github.com/nlohmann/json/issues/2175
+    template<typename ValueType,
+             detail::enable_if_t <
+                 detail::is_basic_json<ValueType>::value,
+                 int> = 0>
+    ValueType & get_to(ValueType& v) const
+    {
+        v = *this;
+        return v;
+    }
+
+    template <
+        typename T, std::size_t N,
+        typename Array = T (&)[N], // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+        detail::enable_if_t <
+            detail::has_from_json<basic_json_t, Array>::value, int > = 0 >
+    Array get_to(T (&v)[N]) const // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    noexcept(noexcept(JSONSerializer<Array>::from_json(
+                          std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<Array>::from_json(*this, v);
+        return v;
+    }
+
+    /// @brief get a reference value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
+    template<typename ReferenceType, typename std::enable_if<
+                 std::is_reference<ReferenceType>::value, int>::type = 0>
+    ReferenceType get_ref()
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /// @brief get a reference value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
+    template < typename ReferenceType, typename std::enable_if <
+                   std::is_reference<ReferenceType>::value&&
+                   std::is_const<typename std::remove_reference<ReferenceType>::type>::value, int >::type = 0 >
+    ReferenceType get_ref() const
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /*!
+    @brief get a value (implicit)
+
+    Implicit type conversion between the JSON value and a compatible value.
+    The call is realized by calling @ref get() const.
+
+    @tparam ValueType non-pointer type compatible to the JSON value, for
+    instance `int` for JSON integer numbers, `bool` for JSON booleans, or
+    `std::vector` types for JSON arrays. The character type of @ref string_t
+    as well as an initializer list of this type is excluded to avoid
+    ambiguities as these types implicitly convert to `std::string`.
+
+    @return copy of the JSON value, converted to type @a ValueType
+
+    @throw type_error.302 in case passed type @a ValueType is incompatible
+    to the JSON value type (e.g., the JSON value is of type boolean, but a
+    string is requested); see example below
+
+    @complexity Linear in the size of the JSON value.
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,operator__ValueType}
+
+    @since version 1.0.0
+    */
+    template < typename ValueType, typename std::enable_if <
+                   detail::conjunction <
+                       detail::negation<std::is_pointer<ValueType>>,
+                       detail::negation<std::is_same<ValueType, detail::json_ref<basic_json>>>,
+                                        detail::negation<std::is_same<ValueType, typename string_t::value_type>>,
+                                        detail::negation<detail::is_basic_json<ValueType>>,
+                                        detail::negation<std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>>,
+
+#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) && _MSC_VER >= 1910 && _MSC_VER <= 1914))
+                                                detail::negation<std::is_same<ValueType, std::string_view>>,
+#endif
+                                                detail::is_detected_lazy<detail::get_template_function, const basic_json_t&, ValueType>
+                                                >::value, int >::type = 0 >
+                                        JSON_EXPLICIT operator ValueType() const
+    {
+        // delegate the call to get<>() const
+        return get<ValueType>();
+    }
+
+    /// @brief get a binary value
+    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
+    binary_t& get_binary()
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, "type must be binary, but is " + std::string(type_name()), *this));
+        }
+
+        return *get_ptr<binary_t*>();
+    }
+
+    /// @brief get a binary value
+    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
+    const binary_t& get_binary() const
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, "type must be binary, but is " + std::string(type_name()), *this));
+        }
+
+        return *get_ptr<const binary_t*>();
+    }
+
+    /// @}
+
+
+    ////////////////////
+    // element access //
+    ////////////////////
+
+    /// @name element access
+    /// Access to the JSON value.
+    /// @{
+
+    /// @brief access specified array element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(size_type idx)
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return set_parent(m_value.array->at(idx));
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range", *this));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, "cannot use at() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @brief access specified array element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(size_type idx) const
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return m_value.array->at(idx);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range", *this));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, "cannot use at() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(const typename object_t::key_type& key)
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            JSON_TRY
+            {
+                return set_parent(m_value.object->at(key));
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(403, "key '" + key + "' not found", *this));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, "cannot use at() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(const typename object_t::key_type& key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            JSON_TRY
+            {
+                return m_value.object->at(key);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(403, "key '" + key + "' not found", *this));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, "cannot use at() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @brief access specified array element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](size_type idx)
+    {
+        // implicitly convert null value to an empty array
+        if (is_null())
+        {
+            m_type = value_t::array;
+            m_value.array = create<array_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // fill up array with null values if given idx is outside range
+            if (idx >= m_value.array->size())
+            {
+#if JSON_DIAGNOSTICS
+                // remember array size & capacity before resizing
+                const auto old_size = m_value.array->size();
+                const auto old_capacity = m_value.array->capacity();
+#endif
+                m_value.array->resize(idx + 1);
+
+#if JSON_DIAGNOSTICS
+                if (JSON_HEDLEY_UNLIKELY(m_value.array->capacity() != old_capacity))
+                {
+                    // capacity has changed: update all parents
+                    set_parents();
+                }
+                else
+                {
+                    // set parent for values added above
+                    set_parents(begin() + static_cast<typename iterator::difference_type>(old_size), static_cast<typename iterator::difference_type>(idx + 1 - old_size));
+                }
+#endif
+                assert_invariant();
+            }
+
+            return m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a numeric argument with " + std::string(type_name()), *this));
+    }
+
+    /// @brief access specified array element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](size_type idx) const
+    {
+        // const operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            return m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a numeric argument with " + std::string(type_name()), *this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](const typename object_t::key_type& key)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            return set_parent(m_value.object->operator[](key));
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](const typename object_t::key_type& key) const
+    {
+        // const operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            JSON_ASSERT(m_value.object->find(key) != m_value.object->end());
+            return m_value.object->find(key)->second;
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    template<typename T>
+    JSON_HEDLEY_NON_NULL(2)
+    reference operator[](T* key)
+    {
+        // implicitly convert null to object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            return set_parent(m_value.object->operator[](key));
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    template<typename T>
+    JSON_HEDLEY_NON_NULL(2)
+    const_reference operator[](T* key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            JSON_ASSERT(m_value.object->find(key) != m_value.object->end());
+            return m_value.object->find(key)->second;
+        }
+
+        JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this));
+    }
+
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    /// using std::is_convertible in a std::enable_if will fail when using explicit conversions
+    template < class ValueType, typename std::enable_if <
+                   detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, ValueType>::value, int >::type = 0 >
+    ValueType value(const typename object_t::key_type& key, const ValueType& default_value) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(key);
+            if (it != end())
+            {
+                return it->template get<ValueType>();
+            }
+
+            return default_value;
+        }
+
+        JSON_THROW(type_error::create(306, "cannot use value() with " + std::string(type_name()), *this));
+    }
+
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    /// overload for a default value of type const char*
+    string_t value(const typename object_t::key_type& key, const char* default_value) const
+    {
+        return value(key, string_t(default_value));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template<class ValueType, typename std::enable_if<
+                 detail::is_getable<basic_json_t, ValueType>::value, int>::type = 0>
+    ValueType value(const json_pointer& ptr, const ValueType& default_value) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if pointer resolves a value, return it or use default value
+            JSON_TRY
+            {
+                return ptr.get_checked(this).template get<ValueType>();
+            }
+            JSON_INTERNAL_CATCH (out_of_range&)
+            {
+                return default_value;
+            }
+        }
+
+        JSON_THROW(type_error::create(306, "cannot use value() with " + std::string(type_name()), *this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    /// overload for a default value of type const char*
+    JSON_HEDLEY_NON_NULL(3)
+    string_t value(const json_pointer& ptr, const char* default_value) const
+    {
+        return value(ptr, string_t(default_value));
+    }
+
+    /// @brief access the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/front/
+    reference front()
+    {
+        return *begin();
+    }
+
+    /// @brief access the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/front/
+    const_reference front() const
+    {
+        return *cbegin();
+    }
+
+    /// @brief access the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/back/
+    reference back()
+    {
+        auto tmp = end();
+        --tmp;
+        return *tmp;
+    }
+
+    /// @brief access the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/back/
+    const_reference back() const
+    {
+        auto tmp = cend();
+        --tmp;
+        return *tmp;
+    }
+
+    /// @brief remove element given an iterator
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template < class IteratorType, typename std::enable_if <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int >::type
+               = 0 >
+    IteratorType erase(IteratorType pos)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != pos.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", *this));
+        }
+
+        IteratorType result = end();
+
+        switch (m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!pos.m_it.primitive_iterator.is_begin()))
+                {
+                    JSON_THROW(invalid_iterator::create(205, "iterator out of range", *this));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.string, 1);
+                    m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.binary, 1);
+                    m_value.binary = nullptr;
+                }
+
+                m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_value.object->erase(pos.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_value.array->erase(pos.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name()), *this));
+        }
+
+        return result;
+    }
+
+    /// @brief remove elements given an iterator range
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template < class IteratorType, typename std::enable_if <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int >::type
+               = 0 >
+    IteratorType erase(IteratorType first, IteratorType last)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != first.m_object || this != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(203, "iterators do not fit current value", *this));
+        }
+
+        IteratorType result = end();
+
+        switch (m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_LIKELY(!first.m_it.primitive_iterator.is_begin()
+                                       || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", *this));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.string, 1);
+                    m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_value.binary, 1);
+                    m_value.binary = nullptr;
+                }
+
+                m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_value.object->erase(first.m_it.object_iterator,
+                                              last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_value.array->erase(first.m_it.array_iterator,
+                                             last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name()), *this));
+        }
+
+        return result;
+    }
+
+    /// @brief remove element from a JSON object given a key
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    size_type erase(const typename object_t::key_type& key)
+    {
+        // this erase only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            return m_value.object->erase(key);
+        }
+
+        JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name()), *this));
+    }
+
+    /// @brief remove element from a JSON array given an index
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    void erase(const size_type idx)
+    {
+        // this erase only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            if (JSON_HEDLEY_UNLIKELY(idx >= size()))
+            {
+                JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range", *this));
+            }
+
+            m_value.array->erase(m_value.array->begin() + static_cast<difference_type>(idx));
+        }
+        else
+        {
+            JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @}
+
+
+    ////////////
+    // lookup //
+    ////////////
+
+    /// @name lookup
+    /// @{
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    template<typename KeyT>
+    iterator find(KeyT&& key)
+    {
+        auto result = end();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_value.object->find(std::forward<KeyT>(key));
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    template<typename KeyT>
+    const_iterator find(KeyT&& key) const
+    {
+        auto result = cend();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_value.object->find(std::forward<KeyT>(key));
+        }
+
+        return result;
+    }
+
+    /// @brief returns the number of occurrences of a key in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/count/
+    template<typename KeyT>
+    size_type count(KeyT&& key) const
+    {
+        // return 0 for all nonobject types
+        return is_object() ? m_value.object->count(std::forward<KeyT>(key)) : 0;
+    }
+
+    /// @brief check the existence of an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    template < typename KeyT, typename std::enable_if <
+                   !std::is_same<typename std::decay<KeyT>::type, json_pointer>::value, int >::type = 0 >
+    bool contains(KeyT && key) const
+    {
+        return is_object() && m_value.object->find(std::forward<KeyT>(key)) != m_value.object->end();
+    }
+
+    /// @brief check the existence of an element in a JSON object given a JSON pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    bool contains(const json_pointer& ptr) const
+    {
+        return ptr.contains(this);
+    }
+
+    /// @}
+
+
+    ///////////////
+    // iterators //
+    ///////////////
+
+    /// @name iterators
+    /// @{
+
+    /// @brief returns an iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/begin/
+    iterator begin() noexcept
+    {
+        iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /// @brief returns an iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/begin/
+    const_iterator begin() const noexcept
+    {
+        return cbegin();
+    }
+
+    /// @brief returns a const iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/cbegin/
+    const_iterator cbegin() const noexcept
+    {
+        const_iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/end/
+    iterator end() noexcept
+    {
+        iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/end/
+    const_iterator end() const noexcept
+    {
+        return cend();
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/cend/
+    const_iterator cend() const noexcept
+    {
+        const_iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /// @brief returns an iterator to the reverse-beginning
+    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
+    reverse_iterator rbegin() noexcept
+    {
+        return reverse_iterator(end());
+    }
+
+    /// @brief returns an iterator to the reverse-beginning
+    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
+    const_reverse_iterator rbegin() const noexcept
+    {
+        return crbegin();
+    }
+
+    /// @brief returns an iterator to the reverse-end
+    /// @sa https://json.nlohmann.me/api/basic_json/rend/
+    reverse_iterator rend() noexcept
+    {
+        return reverse_iterator(begin());
+    }
+
+    /// @brief returns an iterator to the reverse-end
+    /// @sa https://json.nlohmann.me/api/basic_json/rend/
+    const_reverse_iterator rend() const noexcept
+    {
+        return crend();
+    }
+
+    /// @brief returns a const reverse iterator to the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/crbegin/
+    const_reverse_iterator crbegin() const noexcept
+    {
+        return const_reverse_iterator(cend());
+    }
+
+    /// @brief returns a const reverse iterator to one before the first
+    /// @sa https://json.nlohmann.me/api/basic_json/crend/
+    const_reverse_iterator crend() const noexcept
+    {
+        return const_reverse_iterator(cbegin());
+    }
+
+  public:
+    /// @brief wrapper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use @ref items() instead;
+    ///             that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<iterator> iterator_wrapper(reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /// @brief wrapper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
+    ///         version 4.0.0 of the library. Please use @ref items() instead;
+    ///         that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<const_iterator> iterator_wrapper(const_reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /// @brief helper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    iteration_proxy<iterator> items() noexcept
+    {
+        return iteration_proxy<iterator>(*this);
+    }
+
+    /// @brief helper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    iteration_proxy<const_iterator> items() const noexcept
+    {
+        return iteration_proxy<const_iterator>(*this);
+    }
+
+    /// @}
+
+
+    //////////////
+    // capacity //
+    //////////////
+
+    /// @name capacity
+    /// @{
+
+    /// @brief checks whether the container is empty.
+    /// @sa https://json.nlohmann.me/api/basic_json/empty/
+    bool empty() const noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return true;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::empty()
+                return m_value.array->empty();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::empty()
+                return m_value.object->empty();
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types are nonempty
+                return false;
+            }
+        }
+    }
+
+    /// @brief returns the number of elements
+    /// @sa https://json.nlohmann.me/api/basic_json/size/
+    size_type size() const noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return 0;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::size()
+                return m_value.array->size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::size()
+                return m_value.object->size();
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types have size 1
+                return 1;
+            }
+        }
+    }
+
+    /// @brief returns the maximum possible number of elements
+    /// @sa https://json.nlohmann.me/api/basic_json/max_size/
+    size_type max_size() const noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::array:
+            {
+                // delegate call to array_t::max_size()
+                return m_value.array->max_size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::max_size()
+                return m_value.object->max_size();
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types have max_size() == size()
+                return size();
+            }
+        }
+    }
+
+    /// @}
+
+
+    ///////////////
+    // modifiers //
+    ///////////////
+
+    /// @name modifiers
+    /// @{
+
+    /// @brief clears the contents
+    /// @sa https://json.nlohmann.me/api/basic_json/clear/
+    void clear() noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_value.number_integer = 0;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_value.number_unsigned = 0;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_value.number_float = 0.0;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_value.boolean = false;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_value.string->clear();
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_value.binary->clear();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_value.array->clear();
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_value.object->clear();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(basic_json&& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, "cannot use push_back() with " + std::string(type_name()), *this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_type = value_t::array;
+            m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (move semantics)
+        const auto old_capacity = m_value.array->capacity();
+        m_value.array->push_back(std::move(val));
+        set_parent(m_value.array->back(), old_capacity);
+        // if val is moved from, basic_json move constructor marks it null, so we do not call the destructor
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(basic_json&& val)
+    {
+        push_back(std::move(val));
+        return *this;
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(const basic_json& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, "cannot use push_back() with " + std::string(type_name()), *this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_type = value_t::array;
+            m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array
+        const auto old_capacity = m_value.array->capacity();
+        m_value.array->push_back(val);
+        set_parent(m_value.array->back(), old_capacity);
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(const basic_json& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(const typename object_t::value_type& val)
+    {
+        // push_back only works for null objects or objects
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(308, "cannot use push_back() with " + std::string(type_name()), *this));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to object
+        auto res = m_value.object->insert(val);
+        set_parent(res.first->second);
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(const typename object_t::value_type& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(initializer_list_t init)
+    {
+        if (is_object() && init.size() == 2 && (*init.begin())->is_string())
+        {
+            basic_json&& key = init.begin()->moved_or_copied();
+            push_back(typename object_t::value_type(
+                          std::move(key.get_ref<string_t&>()), (init.begin() + 1)->moved_or_copied()));
+        }
+        else
+        {
+            push_back(basic_json(init));
+        }
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(initializer_list_t init)
+    {
+        push_back(init);
+        return *this;
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/emplace_back/
+    template<class... Args>
+    reference emplace_back(Args&& ... args)
+    {
+        // emplace_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(311, "cannot use emplace_back() with " + std::string(type_name()), *this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_type = value_t::array;
+            m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        const auto old_capacity = m_value.array->capacity();
+        m_value.array->emplace_back(std::forward<Args>(args)...);
+        return set_parent(m_value.array->back(), old_capacity);
+    }
+
+    /// @brief add an object to an object if key does not exist
+    /// @sa https://json.nlohmann.me/api/basic_json/emplace/
+    template<class... Args>
+    std::pair<iterator, bool> emplace(Args&& ... args)
+    {
+        // emplace only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(311, "cannot use emplace() with " + std::string(type_name()), *this));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        auto res = m_value.object->emplace(std::forward<Args>(args)...);
+        set_parent(res.first->second);
+
+        // create result iterator and set iterator to the result of emplace
+        auto it = begin();
+        it.m_it.object_iterator = res.first;
+
+        // return pair of iterator and boolean
+        return {it, res.second};
+    }
+
+    /// Helper for insertion of an iterator
+    /// @note: This uses std::distance to support GCC 4.8,
+    ///        see https://github.com/nlohmann/json/pull/1257
+    template<typename... Args>
+    iterator insert_iterator(const_iterator pos, Args&& ... args)
+    {
+        iterator result(this);
+        JSON_ASSERT(m_value.array != nullptr);
+
+        auto insert_pos = std::distance(m_value.array->begin(), pos.m_it.array_iterator);
+        m_value.array->insert(pos.m_it.array_iterator, std::forward<Args>(args)...);
+        result.m_it.array_iterator = m_value.array->begin() + insert_pos;
+
+        // This could have been written as:
+        // result.m_it.array_iterator = m_value.array->insert(pos.m_it.array_iterator, cnt, val);
+        // but the return value of insert is missing in GCC 4.8, so it is written this way instead.
+
+        set_parents();
+        return result;
+    }
+
+    /// @brief inserts element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, const basic_json& val)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", *this));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, val);
+        }
+
+        JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name()), *this));
+    }
+
+    /// @brief inserts element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, basic_json&& val)
+    {
+        return insert(pos, val);
+    }
+
+    /// @brief inserts copies of element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, size_type cnt, const basic_json& val)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", *this));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, cnt, val);
+        }
+
+        JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name()), *this));
+    }
+
+    /// @brief inserts range of elements into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, const_iterator first, const_iterator last)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name()), *this));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", *this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", *this));
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(first.m_object == this))
+        {
+            JSON_THROW(invalid_iterator::create(211, "passed iterators may not belong to container", *this));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, first.m_it.array_iterator, last.m_it.array_iterator);
+    }
+
+    /// @brief inserts elements from initializer list into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, initializer_list_t ilist)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name()), *this));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", *this));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, ilist.begin(), ilist.end());
+    }
+
+    /// @brief inserts range of elements into object
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    void insert(const_iterator first, const_iterator last)
+    {
+        // insert only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name()), *this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", *this));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterators first and last must point to objects", *this));
+        }
+
+        m_value.object->insert(first.m_it.object_iterator, last.m_it.object_iterator);
+    }
+
+    /// @brief updates a JSON object from another object, overwriting existing keys
+    /// @sa https://json.nlohmann.me/api/basic_json/update/
+    void update(const_reference j, bool merge_objects = false)
+    {
+        update(j.begin(), j.end(), merge_objects);
+    }
+
+    /// @brief updates a JSON object from another object, overwriting existing keys
+    /// @sa https://json.nlohmann.me/api/basic_json/update/
+    void update(const_iterator first, const_iterator last, bool merge_objects = false)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_type = value_t::object;
+            m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(312, "cannot use update() with " + std::string(type_name()), *this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", *this));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(type_error::create(312, "cannot use update() with " + std::string(first.m_object->type_name()), *first.m_object));
+        }
+
+        for (auto it = first; it != last; ++it)
+        {
+            if (merge_objects && it.value().is_object())
+            {
+                auto it2 = m_value.object->find(it.key());
+                if (it2 != m_value.object->end())
+                {
+                    it2->second.update(it.value(), true);
+                    continue;
+                }
+            }
+            m_value.object->operator[](it.key()) = it.value();
+#if JSON_DIAGNOSTICS
+            m_value.object->operator[](it.key()).m_parent = this;
+#endif
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(reference other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        std::swap(m_type, other.m_type);
+        std::swap(m_value, other.m_value);
+
+        set_parents();
+        other.set_parents();
+        assert_invariant();
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    friend void swap(reference left, reference right) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        left.swap(right);
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(array_t& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            std::swap(*(m_value.array), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(object_t& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            std::swap(*(m_value.object), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(string_t& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_string()))
+        {
+            std::swap(*(m_value.string), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(binary_t& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            std::swap(*(m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(typename binary_t::container_type& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            std::swap(*(m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name()), *this));
+        }
+    }
+
+    /// @}
+
+  public:
+    //////////////////////////////////////////
+    // lexicographical comparison operators //
+    //////////////////////////////////////////
+
+    /// @name lexicographical comparison operators
+    /// @{
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    friend bool operator==(const_reference lhs, const_reference rhs) noexcept
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        const auto lhs_type = lhs.type();
+        const auto rhs_type = rhs.type();
+
+        if (lhs_type == rhs_type)
+        {
+            switch (lhs_type)
+            {
+                case value_t::array:
+                    return *lhs.m_value.array == *rhs.m_value.array;
+
+                case value_t::object:
+                    return *lhs.m_value.object == *rhs.m_value.object;
+
+                case value_t::null:
+                    return true;
+
+                case value_t::string:
+                    return *lhs.m_value.string == *rhs.m_value.string;
+
+                case value_t::boolean:
+                    return lhs.m_value.boolean == rhs.m_value.boolean;
+
+                case value_t::number_integer:
+                    return lhs.m_value.number_integer == rhs.m_value.number_integer;
+
+                case value_t::number_unsigned:
+                    return lhs.m_value.number_unsigned == rhs.m_value.number_unsigned;
+
+                case value_t::number_float:
+                    return lhs.m_value.number_float == rhs.m_value.number_float;
+
+                case value_t::binary:
+                    return *lhs.m_value.binary == *rhs.m_value.binary;
+
+                case value_t::discarded:
+                default:
+                    return false;
+            }
+        }
+        else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_float)
+        {
+            return static_cast<number_float_t>(lhs.m_value.number_integer) == rhs.m_value.number_float;
+        }
+        else if (lhs_type == value_t::number_float && rhs_type == value_t::number_integer)
+        {
+            return lhs.m_value.number_float == static_cast<number_float_t>(rhs.m_value.number_integer);
+        }
+        else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_float)
+        {
+            return static_cast<number_float_t>(lhs.m_value.number_unsigned) == rhs.m_value.number_float;
+        }
+        else if (lhs_type == value_t::number_float && rhs_type == value_t::number_unsigned)
+        {
+            return lhs.m_value.number_float == static_cast<number_float_t>(rhs.m_value.number_unsigned);
+        }
+        else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_integer)
+        {
+            return static_cast<number_integer_t>(lhs.m_value.number_unsigned) == rhs.m_value.number_integer;
+        }
+        else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_unsigned)
+        {
+            return lhs.m_value.number_integer == static_cast<number_integer_t>(rhs.m_value.number_unsigned);
+        }
+
+        return false;
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs == basic_json(rhs);
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) == rhs;
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    friend bool operator!=(const_reference lhs, const_reference rhs) noexcept
+    {
+        return !(lhs == rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs != basic_json(rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) != rhs;
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    friend bool operator<(const_reference lhs, const_reference rhs) noexcept
+    {
+        const auto lhs_type = lhs.type();
+        const auto rhs_type = rhs.type();
+
+        if (lhs_type == rhs_type)
+        {
+            switch (lhs_type)
+            {
+                case value_t::array:
+                    // note parentheses are necessary, see
+                    // https://github.com/nlohmann/json/issues/1530
+                    return (*lhs.m_value.array) < (*rhs.m_value.array);
+
+                case value_t::object:
+                    return (*lhs.m_value.object) < (*rhs.m_value.object);
+
+                case value_t::null:
+                    return false;
+
+                case value_t::string:
+                    return (*lhs.m_value.string) < (*rhs.m_value.string);
+
+                case value_t::boolean:
+                    return (lhs.m_value.boolean) < (rhs.m_value.boolean);
+
+                case value_t::number_integer:
+                    return (lhs.m_value.number_integer) < (rhs.m_value.number_integer);
+
+                case value_t::number_unsigned:
+                    return (lhs.m_value.number_unsigned) < (rhs.m_value.number_unsigned);
+
+                case value_t::number_float:
+                    return (lhs.m_value.number_float) < (rhs.m_value.number_float);
+
+                case value_t::binary:
+                    return (*lhs.m_value.binary) < (*rhs.m_value.binary);
+
+                case value_t::discarded:
+                default:
+                    return false;
+            }
+        }
+        else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_float)
+        {
+            return static_cast<number_float_t>(lhs.m_value.number_integer) < rhs.m_value.number_float;
+        }
+        else if (lhs_type == value_t::number_float && rhs_type == value_t::number_integer)
+        {
+            return lhs.m_value.number_float < static_cast<number_float_t>(rhs.m_value.number_integer);
+        }
+        else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_float)
+        {
+            return static_cast<number_float_t>(lhs.m_value.number_unsigned) < rhs.m_value.number_float;
+        }
+        else if (lhs_type == value_t::number_float && rhs_type == value_t::number_unsigned)
+        {
+            return lhs.m_value.number_float < static_cast<number_float_t>(rhs.m_value.number_unsigned);
+        }
+        else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_unsigned)
+        {
+            return lhs.m_value.number_integer < static_cast<number_integer_t>(rhs.m_value.number_unsigned);
+        }
+        else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_integer)
+        {
+            return static_cast<number_integer_t>(lhs.m_value.number_unsigned) < rhs.m_value.number_integer;
+        }
+
+        // We only reach this line if we cannot compare values. In that case,
+        // we compare types. Note we have to call the operator explicitly,
+        // because MSVC has problems otherwise.
+        return operator<(lhs_type, rhs_type);
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs < basic_json(rhs);
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) < rhs;
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    friend bool operator<=(const_reference lhs, const_reference rhs) noexcept
+    {
+        return !(rhs < lhs);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs <= basic_json(rhs);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) <= rhs;
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    friend bool operator>(const_reference lhs, const_reference rhs) noexcept
+    {
+        return !(lhs <= rhs);
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs > basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) > rhs;
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    friend bool operator>=(const_reference lhs, const_reference rhs) noexcept
+    {
+        return !(lhs < rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs >= basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) >= rhs;
+    }
+
+    /// @}
+
+    ///////////////////
+    // serialization //
+    ///////////////////
+
+    /// @name serialization
+    /// @{
+#ifndef JSON_NO_IO
+    /// @brief serialize to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const basic_json& j)
+    {
+        // read width member and use it as indentation parameter if nonzero
+        const bool pretty_print = o.width() > 0;
+        const auto indentation = pretty_print ? o.width() : 0;
+
+        // reset width to 0 for subsequent calls to this stream
+        o.width(0);
+
+        // do the actual serialization
+        serializer s(detail::output_adapter<char>(o), o.fill());
+        s.dump(j, pretty_print, false, static_cast<unsigned int>(indentation));
+        return o;
+    }
+
+    /// @brief serialize to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    /// @deprecated This function is deprecated since 3.0.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             operator<<(std::ostream&, const basic_json&) instead; that is,
+    ///             replace calls like `j >> o;` with `o << j;`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator<<(std::ostream&, const basic_json&))
+    friend std::ostream& operator>>(const basic_json& j, std::ostream& o)
+    {
+        return o << j;
+    }
+#endif  // JSON_NO_IO
+    /// @}
+
+
+    /////////////////////
+    // deserialization //
+    /////////////////////
+
+    /// @name deserialization
+    /// @{
+
+    /// @brief deserialize from a compatible input
+    /// @sa https://json.nlohmann.me/api/basic_json/parse/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(InputType&& i,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::forward<InputType>(i)), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    /// @brief deserialize from a pair of character iterators
+    /// @sa https://json.nlohmann.me/api/basic_json/parse/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(IteratorType first,
+                            IteratorType last,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::move(first), std::move(last)), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, parse(ptr, ptr + len))
+    static basic_json parse(detail::span_input_adapter&& i,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(i.get(), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    /// @brief check if the input is valid JSON
+    /// @sa https://json.nlohmann.me/api/basic_json/accept/
+    template<typename InputType>
+    static bool accept(InputType&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::forward<InputType>(i)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /// @brief check if the input is valid JSON
+    /// @sa https://json.nlohmann.me/api/basic_json/accept/
+    template<typename IteratorType>
+    static bool accept(IteratorType first, IteratorType last,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::move(first), std::move(last)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, accept(ptr, ptr + len))
+    static bool accept(detail::span_input_adapter&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(i.get(), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    template <typename InputType, typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(InputType&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    template<class IteratorType, class SAX>
+    JSON_HEDLEY_NON_NULL(3)
+    static bool sax_parse(IteratorType first, IteratorType last, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    /// @deprecated This function is deprecated since 3.8.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             sax_parse(ptr, ptr + len) instead.
+    template <typename SAX>
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, sax_parse(ptr, ptr + len, ...))
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(detail::span_input_adapter&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = i.get();
+        return format == input_format_t::json
+               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
+    }
+#ifndef JSON_NO_IO
+    /// @brief deserialize from stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
+    /// @deprecated This stream operator is deprecated since 3.0.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             operator>>(std::istream&, basic_json&) instead; that is,
+    ///             replace calls like `j << i;` with `i >> j;`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator>>(std::istream&, basic_json&))
+    friend std::istream& operator<<(basic_json& j, std::istream& i)
+    {
+        return operator>>(i, j);
+    }
+
+    /// @brief deserialize from stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
+    friend std::istream& operator>>(std::istream& i, basic_json& j)
+    {
+        parser(detail::input_adapter(i)).parse(false, j);
+        return i;
+    }
+#endif  // JSON_NO_IO
+    /// @}
+
+    ///////////////////////////
+    // convenience functions //
+    ///////////////////////////
+
+    /// @brief return the type as string
+    /// @sa https://json.nlohmann.me/api/basic_json/type_name/
+    JSON_HEDLEY_RETURNS_NON_NULL
+    const char* type_name() const noexcept
+    {
+        switch (m_type)
+        {
+            case value_t::null:
+                return "null";
+            case value_t::object:
+                return "object";
+            case value_t::array:
+                return "array";
+            case value_t::string:
+                return "string";
+            case value_t::boolean:
+                return "boolean";
+            case value_t::binary:
+                return "binary";
+            case value_t::discarded:
+                return "discarded";
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            default:
+                return "number";
+        }
+    }
+
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    //////////////////////
+    // member variables //
+    //////////////////////
+
+    /// the type of the current element
+    value_t m_type = value_t::null;
+
+    /// the value of the current element
+    json_value m_value = {};
+
+#if JSON_DIAGNOSTICS
+    /// a pointer to a parent value (for debugging purposes)
+    basic_json* m_parent = nullptr;
+#endif
+
+    //////////////////////////////////////////
+    // binary serialization/deserialization //
+    //////////////////////////////////////////
+
+    /// @name binary serialization/deserialization support
+    /// @{
+
+  public:
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static std::vector<std::uint8_t> to_cbor(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_cbor(j, result);
+        return result;
+    }
+
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static void to_cbor(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_cbor(j);
+    }
+
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static void to_cbor(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_cbor(j);
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static std::vector<std::uint8_t> to_msgpack(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_msgpack(j, result);
+        return result;
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static void to_msgpack(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_msgpack(j);
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static void to_msgpack(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_msgpack(j);
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static std::vector<std::uint8_t> to_ubjson(const basic_json& j,
+            const bool use_size = false,
+            const bool use_type = false)
+    {
+        std::vector<std::uint8_t> result;
+        to_ubjson(j, result, use_size, use_type);
+        return result;
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static void to_ubjson(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static void to_ubjson(const basic_json& j, detail::output_adapter<char> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<char>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static std::vector<std::uint8_t> to_bson(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_bson(j, result);
+        return result;
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static void to_bson(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_bson(j);
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static void to_bson(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_bson(j);
+    }
+
+    /// @brief create a JSON value from an input in CBOR format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in CBOR format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        return from_cbor(ptr, ptr + len, strict, allow_exceptions, tag_handler);
+    }
+
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in MessagePack format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(InputType&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in MessagePack format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(IteratorType first, IteratorType last,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(const T* ptr, std::size_t len,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        return from_msgpack(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(detail::span_input_adapter&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in UBJSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(InputType&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in UBJSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(IteratorType first, IteratorType last,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(const T* ptr, std::size_t len,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        return from_ubjson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(detail::span_input_adapter&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        return from_bson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia)).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+    /// @}
+
+    //////////////////////////
+    // JSON Pointer support //
+    //////////////////////////
+
+    /// @name JSON Pointer functions
+    /// @{
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](const json_pointer& ptr)
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](const json_pointer& ptr) const
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(const json_pointer& ptr)
+    {
+        return ptr.get_checked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(const json_pointer& ptr) const
+    {
+        return ptr.get_checked(this);
+    }
+
+    /// @brief return flattened JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/flatten/
+    basic_json flatten() const
+    {
+        basic_json result(value_t::object);
+        json_pointer::flatten("", *this, result);
+        return result;
+    }
+
+    /// @brief unflatten a previously flattened JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/unflatten/
+    basic_json unflatten() const
+    {
+        return json_pointer::unflatten(*this);
+    }
+
+    /// @}
+
+    //////////////////////////
+    // JSON Patch functions //
+    //////////////////////////
+
+    /// @name JSON Patch functions
+    /// @{
+
+    /// @brief applies a JSON patch
+    /// @sa https://json.nlohmann.me/api/basic_json/patch/
+    basic_json patch(const basic_json& json_patch) const
+    {
+        // make a working copy to apply the patch to
+        basic_json result = *this;
+
+        // the valid JSON Patch operations
+        enum class patch_operations {add, remove, replace, move, copy, test, invalid};
+
+        const auto get_op = [](const std::string & op)
+        {
+            if (op == "add")
+            {
+                return patch_operations::add;
+            }
+            if (op == "remove")
+            {
+                return patch_operations::remove;
+            }
+            if (op == "replace")
+            {
+                return patch_operations::replace;
+            }
+            if (op == "move")
+            {
+                return patch_operations::move;
+            }
+            if (op == "copy")
+            {
+                return patch_operations::copy;
+            }
+            if (op == "test")
+            {
+                return patch_operations::test;
+            }
+
+            return patch_operations::invalid;
+        };
+
+        // wrapper for "add" operation; add value at ptr
+        const auto operation_add = [&result](json_pointer & ptr, basic_json val)
+        {
+            // adding to the root of the target document means replacing it
+            if (ptr.empty())
+            {
+                result = val;
+                return;
+            }
+
+            // make sure the top element of the pointer exists
+            json_pointer top_pointer = ptr.top();
+            if (top_pointer != ptr)
+            {
+                result.at(top_pointer);
+            }
+
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            basic_json& parent = result[ptr];
+
+            switch (parent.m_type)
+            {
+                case value_t::null:
+                case value_t::object:
+                {
+                    // use operator[] to add value
+                    parent[last_path] = val;
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    if (last_path == "-")
+                    {
+                        // special case: append to back
+                        parent.push_back(val);
+                    }
+                    else
+                    {
+                        const auto idx = json_pointer::array_index(last_path);
+                        if (JSON_HEDLEY_UNLIKELY(idx > parent.size()))
+                        {
+                            // avoid undefined behavior
+                            JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range", parent));
+                        }
+
+                        // default case: insert add offset
+                        parent.insert(parent.begin() + static_cast<difference_type>(idx), val);
+                    }
+                    break;
+                }
+
+                // if there exists a parent it cannot be primitive
+                case value_t::string: // LCOV_EXCL_LINE
+                case value_t::boolean: // LCOV_EXCL_LINE
+                case value_t::number_integer: // LCOV_EXCL_LINE
+                case value_t::number_unsigned: // LCOV_EXCL_LINE
+                case value_t::number_float: // LCOV_EXCL_LINE
+                case value_t::binary: // LCOV_EXCL_LINE
+                case value_t::discarded: // LCOV_EXCL_LINE
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            }
+        };
+
+        // wrapper for "remove" operation; remove value at ptr
+        const auto operation_remove = [this, &result](json_pointer & ptr)
+        {
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            basic_json& parent = result.at(ptr);
+
+            // remove child
+            if (parent.is_object())
+            {
+                // perform range check
+                auto it = parent.find(last_path);
+                if (JSON_HEDLEY_LIKELY(it != parent.end()))
+                {
+                    parent.erase(it);
+                }
+                else
+                {
+                    JSON_THROW(out_of_range::create(403, "key '" + last_path + "' not found", *this));
+                }
+            }
+            else if (parent.is_array())
+            {
+                // note erase performs range check
+                parent.erase(json_pointer::array_index(last_path));
+            }
+        };
+
+        // type check: top level value must be an array
+        if (JSON_HEDLEY_UNLIKELY(!json_patch.is_array()))
+        {
+            JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", json_patch));
+        }
+
+        // iterate and apply the operations
+        for (const auto& val : json_patch)
+        {
+            // wrapper to get a value for an operation
+            const auto get_value = [&val](const std::string & op,
+                                          const std::string & member,
+                                          bool string_type) -> basic_json &
+            {
+                // find value
+                auto it = val.m_value.object->find(member);
+
+                // context-sensitive error message
+                const auto error_msg = (op == "op") ? "operation" : "operation '" + op + "'";
+
+                // check if desired value is present
+                if (JSON_HEDLEY_UNLIKELY(it == val.m_value.object->end()))
+                {
+                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
+                    JSON_THROW(parse_error::create(105, 0, error_msg + " must have member '" + member + "'", val));
+                }
+
+                // check if result is of type string
+                if (JSON_HEDLEY_UNLIKELY(string_type && !it->second.is_string()))
+                {
+                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
+                    JSON_THROW(parse_error::create(105, 0, error_msg + " must have string member '" + member + "'", val));
+                }
+
+                // no error: return value
+                return it->second;
+            };
+
+            // type check: every element of the array must be an object
+            if (JSON_HEDLEY_UNLIKELY(!val.is_object()))
+            {
+                JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", val));
+            }
+
+            // collect mandatory members
+            const auto op = get_value("op", "op", true).template get<std::string>();
+            const auto path = get_value(op, "path", true).template get<std::string>();
+            json_pointer ptr(path);
+
+            switch (get_op(op))
+            {
+                case patch_operations::add:
+                {
+                    operation_add(ptr, get_value("add", "value", false));
+                    break;
+                }
+
+                case patch_operations::remove:
+                {
+                    operation_remove(ptr);
+                    break;
+                }
+
+                case patch_operations::replace:
+                {
+                    // the "path" location must exist - use at()
+                    result.at(ptr) = get_value("replace", "value", false);
+                    break;
+                }
+
+                case patch_operations::move:
+                {
+                    const auto from_path = get_value("move", "from", true).template get<std::string>();
+                    json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json v = result.at(from_ptr);
+
+                    // The move operation is functionally identical to a
+                    // "remove" operation on the "from" location, followed
+                    // immediately by an "add" operation at the target
+                    // location with the value that was just removed.
+                    operation_remove(from_ptr);
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::copy:
+                {
+                    const auto from_path = get_value("copy", "from", true).template get<std::string>();
+                    const json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json v = result.at(from_ptr);
+
+                    // The copy is functionally identical to an "add"
+                    // operation at the target location using the value
+                    // specified in the "from" member.
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::test:
+                {
+                    bool success = false;
+                    JSON_TRY
+                    {
+                        // check if "value" matches the one at "path"
+                        // the "path" location must exist - use at()
+                        success = (result.at(ptr) == get_value("test", "value", false));
+                    }
+                    JSON_INTERNAL_CATCH (out_of_range&)
+                    {
+                        // ignore out of range errors: success remains false
+                    }
+
+                    // throw an exception if test fails
+                    if (JSON_HEDLEY_UNLIKELY(!success))
+                    {
+                        JSON_THROW(other_error::create(501, "unsuccessful: " + val.dump(), val));
+                    }
+
+                    break;
+                }
+
+                case patch_operations::invalid:
+                default:
+                {
+                    // op must be "add", "remove", "replace", "move", "copy", or
+                    // "test"
+                    JSON_THROW(parse_error::create(105, 0, "operation value '" + op + "' is invalid", val));
+                }
+            }
+        }
+
+        return result;
+    }
+
+    /// @brief creates a diff as a JSON patch
+    /// @sa https://json.nlohmann.me/api/basic_json/diff/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json diff(const basic_json& source, const basic_json& target,
+                           const std::string& path = "")
+    {
+        // the patch
+        basic_json result(value_t::array);
+
+        // if the values are the same, return empty patch
+        if (source == target)
+        {
+            return result;
+        }
+
+        if (source.type() != target.type())
+        {
+            // different types: replace value
+            result.push_back(
+            {
+                {"op", "replace"}, {"path", path}, {"value", target}
+            });
+            return result;
+        }
+
+        switch (source.type())
+        {
+            case value_t::array:
+            {
+                // first pass: traverse common elements
+                std::size_t i = 0;
+                while (i < source.size() && i < target.size())
+                {
+                    // recursive call to compare array values at index i
+                    auto temp_diff = diff(source[i], target[i], path + "/" + std::to_string(i));
+                    result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    ++i;
+                }
+
+                // We now reached the end of at least one array
+                // in a second pass, traverse the remaining elements
+
+                // remove my remaining elements
+                const auto end_index = static_cast<difference_type>(result.size());
+                while (i < source.size())
+                {
+                    // add operations in reverse order to avoid invalid
+                    // indices
+                    result.insert(result.begin() + end_index, object(
+                    {
+                        {"op", "remove"},
+                        {"path", path + "/" + std::to_string(i)}
+                    }));
+                    ++i;
+                }
+
+                // add other remaining elements
+                while (i < target.size())
+                {
+                    result.push_back(
+                    {
+                        {"op", "add"},
+                        {"path", path + "/-"},
+                        {"value", target[i]}
+                    });
+                    ++i;
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // first pass: traverse this object's elements
+                for (auto it = source.cbegin(); it != source.cend(); ++it)
+                {
+                    // escape the key name to be used in a JSON patch
+                    const auto path_key = path + "/" + detail::escape(it.key());
+
+                    if (target.find(it.key()) != target.end())
+                    {
+                        // recursive call to compare object values at key it
+                        auto temp_diff = diff(it.value(), target[it.key()], path_key);
+                        result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    }
+                    else
+                    {
+                        // found a key that is not in o -> remove it
+                        result.push_back(object(
+                        {
+                            {"op", "remove"}, {"path", path_key}
+                        }));
+                    }
+                }
+
+                // second pass: traverse other object's elements
+                for (auto it = target.cbegin(); it != target.cend(); ++it)
+                {
+                    if (source.find(it.key()) == source.end())
+                    {
+                        // found a key that is not in this -> add it
+                        const auto path_key = path + "/" + detail::escape(it.key());
+                        result.push_back(
+                        {
+                            {"op", "add"}, {"path", path_key},
+                            {"value", it.value()}
+                        });
+                    }
+                }
+
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // both primitive type: replace value
+                result.push_back(
+                {
+                    {"op", "replace"}, {"path", path}, {"value", target}
+                });
+                break;
+            }
+        }
+
+        return result;
+    }
+
+    /// @}
+
+    ////////////////////////////////
+    // JSON Merge Patch functions //
+    ////////////////////////////////
+
+    /// @name JSON Merge Patch functions
+    /// @{
+
+    /// @brief applies a JSON Merge Patch
+    /// @sa https://json.nlohmann.me/api/basic_json/merge_patch/
+    void merge_patch(const basic_json& apply_patch)
+    {
+        if (apply_patch.is_object())
+        {
+            if (!is_object())
+            {
+                *this = object();
+            }
+            for (auto it = apply_patch.begin(); it != apply_patch.end(); ++it)
+            {
+                if (it.value().is_null())
+                {
+                    erase(it.key());
+                }
+                else
+                {
+                    operator[](it.key()).merge_patch(it.value());
+                }
+            }
+        }
+        else
+        {
+            *this = apply_patch;
+        }
+    }
+
+    /// @}
+};
+
+/// @brief user-defined to_string function for JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/to_string/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+std::string to_string(const NLOHMANN_BASIC_JSON_TPL& j)
+{
+    return j.dump();
+}
+
+} // namespace nlohmann
+
+///////////////////////
+// nonmember support //
+///////////////////////
+
+namespace std // NOLINT(cert-dcl58-cpp)
+{
+
+/// @brief hash value for JSON objects
+/// @sa https://json.nlohmann.me/api/basic_json/std_hash/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct hash<nlohmann::NLOHMANN_BASIC_JSON_TPL>
+{
+    std::size_t operator()(const nlohmann::NLOHMANN_BASIC_JSON_TPL& j) const
+    {
+        return nlohmann::detail::hash(j);
+    }
+};
+
+// specialization for std::less<value_t>
+template<>
+struct less< ::nlohmann::detail::value_t> // do not remove the space after '<', see https://github.com/nlohmann/json/pull/679
+{
+    /*!
+    @brief compare two value_t enum values
+    @since version 3.0.0
+    */
+    bool operator()(nlohmann::detail::value_t lhs,
+                    nlohmann::detail::value_t rhs) const noexcept
+    {
+        return nlohmann::detail::operator<(lhs, rhs);
+    }
+};
+
+// C++20 prohibit function specialization in the std namespace.
+#ifndef JSON_HAS_CPP_20
+
+/// @brief exchanges the values of two JSON objects
+/// @sa https://json.nlohmann.me/api/basic_json/std_swap/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC_JSON_TPL& j2) noexcept(  // NOLINT(readability-inconsistent-declaration-parameter-name)
+    is_nothrow_move_constructible<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value&&                          // NOLINT(misc-redundant-expression)
+    is_nothrow_move_assignable<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value)
+{
+    j1.swap(j2);
+}
+
+#endif
+
+} // namespace std
+
+/// @brief user-defined string literal for JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json/
+JSON_HEDLEY_NON_NULL(1)
+inline nlohmann::json operator "" _json(const char* s, std::size_t n)
+{
+    return nlohmann::json::parse(s, s + n);
+}
+
+/// @brief user-defined string literal for JSON pointer
+/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json_pointer/
+JSON_HEDLEY_NON_NULL(1)
+inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
+{
+    return nlohmann::json::json_pointer(std::string(s, n));
+}
+
+// #include <nlohmann/detail/macro_unscope.hpp>
+
+
+// restore clang diagnostic settings
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+
+// clean up
+#undef JSON_ASSERT
+#undef JSON_INTERNAL_CATCH
+#undef JSON_CATCH
+#undef JSON_THROW
+#undef JSON_TRY
+#undef JSON_PRIVATE_UNLESS_TESTED
+#undef JSON_HAS_CPP_11
+#undef JSON_HAS_CPP_14
+#undef JSON_HAS_CPP_17
+#undef JSON_HAS_CPP_20
+#undef JSON_HAS_FILESYSTEM
+#undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+#undef NLOHMANN_BASIC_JSON_TPL_DECLARATION
+#undef NLOHMANN_BASIC_JSON_TPL
+#undef JSON_EXPLICIT
+#undef NLOHMANN_CAN_CALL_STD_FUNC_IMPL
+
+// #include <nlohmann/thirdparty/hedley/hedley_undef.hpp>
+
+
+#undef JSON_HEDLEY_ALWAYS_INLINE
+#undef JSON_HEDLEY_ARM_VERSION
+#undef JSON_HEDLEY_ARM_VERSION_CHECK
+#undef JSON_HEDLEY_ARRAY_PARAM
+#undef JSON_HEDLEY_ASSUME
+#undef JSON_HEDLEY_BEGIN_C_DECLS
+#undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#undef JSON_HEDLEY_CLANG_HAS_WARNING
+#undef JSON_HEDLEY_COMPCERT_VERSION
+#undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#undef JSON_HEDLEY_CONCAT
+#undef JSON_HEDLEY_CONCAT3
+#undef JSON_HEDLEY_CONCAT3_EX
+#undef JSON_HEDLEY_CONCAT_EX
+#undef JSON_HEDLEY_CONST
+#undef JSON_HEDLEY_CONSTEXPR
+#undef JSON_HEDLEY_CONST_CAST
+#undef JSON_HEDLEY_CPP_CAST
+#undef JSON_HEDLEY_CRAY_VERSION
+#undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#undef JSON_HEDLEY_C_DECL
+#undef JSON_HEDLEY_DEPRECATED
+#undef JSON_HEDLEY_DEPRECATED_FOR
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#undef JSON_HEDLEY_DIAGNOSTIC_POP
+#undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#undef JSON_HEDLEY_DMC_VERSION
+#undef JSON_HEDLEY_DMC_VERSION_CHECK
+#undef JSON_HEDLEY_EMPTY_BASES
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#undef JSON_HEDLEY_END_C_DECLS
+#undef JSON_HEDLEY_FLAGS
+#undef JSON_HEDLEY_FLAGS_CAST
+#undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#undef JSON_HEDLEY_GCC_HAS_FEATURE
+#undef JSON_HEDLEY_GCC_HAS_WARNING
+#undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#undef JSON_HEDLEY_GCC_VERSION
+#undef JSON_HEDLEY_GCC_VERSION_CHECK
+#undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#undef JSON_HEDLEY_GNUC_HAS_WARNING
+#undef JSON_HEDLEY_GNUC_VERSION
+#undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#undef JSON_HEDLEY_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_BUILTIN
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_EXTENSION
+#undef JSON_HEDLEY_HAS_FEATURE
+#undef JSON_HEDLEY_HAS_WARNING
+#undef JSON_HEDLEY_IAR_VERSION
+#undef JSON_HEDLEY_IAR_VERSION_CHECK
+#undef JSON_HEDLEY_IBM_VERSION
+#undef JSON_HEDLEY_IBM_VERSION_CHECK
+#undef JSON_HEDLEY_IMPORT
+#undef JSON_HEDLEY_INLINE
+#undef JSON_HEDLEY_INTEL_CL_VERSION
+#undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
+#undef JSON_HEDLEY_INTEL_VERSION
+#undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#undef JSON_HEDLEY_IS_CONSTANT
+#undef JSON_HEDLEY_IS_CONSTEXPR_
+#undef JSON_HEDLEY_LIKELY
+#undef JSON_HEDLEY_MALLOC
+#undef JSON_HEDLEY_MCST_LCC_VERSION
+#undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
+#undef JSON_HEDLEY_MESSAGE
+#undef JSON_HEDLEY_MSVC_VERSION
+#undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#undef JSON_HEDLEY_NEVER_INLINE
+#undef JSON_HEDLEY_NON_NULL
+#undef JSON_HEDLEY_NO_ESCAPE
+#undef JSON_HEDLEY_NO_RETURN
+#undef JSON_HEDLEY_NO_THROW
+#undef JSON_HEDLEY_NULL
+#undef JSON_HEDLEY_PELLES_VERSION
+#undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#undef JSON_HEDLEY_PGI_VERSION
+#undef JSON_HEDLEY_PGI_VERSION_CHECK
+#undef JSON_HEDLEY_PREDICT
+#undef JSON_HEDLEY_PRINTF_FORMAT
+#undef JSON_HEDLEY_PRIVATE
+#undef JSON_HEDLEY_PUBLIC
+#undef JSON_HEDLEY_PURE
+#undef JSON_HEDLEY_REINTERPRET_CAST
+#undef JSON_HEDLEY_REQUIRE
+#undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#undef JSON_HEDLEY_REQUIRE_MSG
+#undef JSON_HEDLEY_RESTRICT
+#undef JSON_HEDLEY_RETURNS_NON_NULL
+#undef JSON_HEDLEY_SENTINEL
+#undef JSON_HEDLEY_STATIC_ASSERT
+#undef JSON_HEDLEY_STATIC_CAST
+#undef JSON_HEDLEY_STRINGIFY
+#undef JSON_HEDLEY_STRINGIFY_EX
+#undef JSON_HEDLEY_SUNPRO_VERSION
+#undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#undef JSON_HEDLEY_TINYC_VERSION
+#undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#undef JSON_HEDLEY_TI_ARMCL_VERSION
+#undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL2000_VERSION
+#undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL430_VERSION
+#undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL6X_VERSION
+#undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL7X_VERSION
+#undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CLPRU_VERSION
+#undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#undef JSON_HEDLEY_TI_VERSION
+#undef JSON_HEDLEY_TI_VERSION_CHECK
+#undef JSON_HEDLEY_UNAVAILABLE
+#undef JSON_HEDLEY_UNLIKELY
+#undef JSON_HEDLEY_UNPREDICTABLE
+#undef JSON_HEDLEY_UNREACHABLE
+#undef JSON_HEDLEY_UNREACHABLE_RETURN
+#undef JSON_HEDLEY_VERSION
+#undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#undef JSON_HEDLEY_VERSION_ENCODE
+#undef JSON_HEDLEY_WARNING
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#undef JSON_HEDLEY_FALL_THROUGH
+
+
+
+#endif  // INCLUDE_NLOHMANN_JSON_V3_10_5_HPP_
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/CMakeLists.txt
new file mode 100644
index 00000000..c1a0817e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/CMakeLists.txt
@@ -0,0 +1,12 @@
+# test linking an old library version without an inline namespace
+# with the current library using an inline namespace into the same executable
+
+# build test executable and add test
+add_executable(abi_compat_inline_ns
+    use_v3_10_5.cpp
+    use_current.cpp)
+target_link_libraries(abi_compat_inline_ns PRIVATE abi_compat_main)
+
+add_test(
+    NAME test-abi_compat_inline_ns
+    COMMAND abi_compat_inline_ns ${DOCTEST_TEST_FILTER})
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/use_current.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/use_current.cpp
new file mode 100644
index 00000000..ba2b5495
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/use_current.cpp
@@ -0,0 +1,36 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+
+TEST_CASE("use current library with inline namespace")
+{
+    SECTION("implicitly")
+    {
+        using nlohmann::json;
+        using nlohmann::ordered_json;
+
+        json j;
+        // In v3.10.5 mixing json_pointers of different basic_json types
+        // results in implicit string conversion
+        j[ordered_json::json_pointer("/root")] = json::object();
+        CHECK(j.dump() == "{\"root\":{}}");
+    }
+
+    SECTION("explicitly")
+    {
+        using NLOHMANN_JSON_NAMESPACE::json;
+        using NLOHMANN_JSON_NAMESPACE::ordered_json;
+
+        json j;
+        j[ordered_json::json_pointer("/root")] = json::object();
+        CHECK(j.dump() == "{\"root\":{}}");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/use_v3_10_5.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/use_v3_10_5.cpp
new file mode 100644
index 00000000..79cf658d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/inline_ns/use_v3_10_5.cpp
@@ -0,0 +1,22 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json_v3_10_5.hpp>
+using nlohmann::json;
+using nlohmann::ordered_json;
+
+TEST_CASE("use library v3.10.5 without inline namespace")
+{
+    json j;
+    j[ordered_json::json_pointer("/root")] = json::object();
+    // In v3.10.5 mixing json_pointers of different basic_json types
+    // results in implicit string conversion
+    CHECK(j.dump() == "{\"/root\":{}}");
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/main.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/main.cpp
new file mode 100644
index 00000000..523cda91
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/abi/main.cpp
@@ -0,0 +1,10 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest_compatibility.h"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/benchmarks/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/benchmarks/CMakeLists.txt
new file mode 100644
index 00000000..4aa095e3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/benchmarks/CMakeLists.txt
@@ -0,0 +1,34 @@
+cmake_minimum_required(VERSION 3.11...3.14)
+project(JSON_Benchmarks LANGUAGES CXX)
+
+# set compiler flags
+if((CMAKE_CXX_COMPILER_ID MATCHES GNU) OR (CMAKE_CXX_COMPILER_ID MATCHES Clang))
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto -DNDEBUG -O3")
+endif()
+
+# configure Google Benchmarks
+include(FetchContent)
+FetchContent_Declare(
+    benchmark
+    GIT_REPOSITORY https://github.com/google/benchmark.git
+    GIT_TAG origin/main
+    GIT_SHALLOW TRUE
+)
+
+FetchContent_GetProperties(benchmark)
+if(NOT benchmark_POPULATED)
+    FetchContent_Populate(benchmark)
+    set(BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "" FORCE)
+    add_subdirectory(${benchmark_SOURCE_DIR} ${benchmark_BINARY_DIR})
+endif()
+
+# download test data
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../cmake ${CMAKE_MODULE_PATH})
+include(download_test_data)
+
+# benchmark binary
+add_executable(json_benchmarks src/benchmarks.cpp)
+target_compile_features(json_benchmarks PRIVATE cxx_std_11)
+target_link_libraries(json_benchmarks benchmark ${CMAKE_THREAD_LIBS_INIT})
+add_dependencies(json_benchmarks download_test_data)
+target_include_directories(json_benchmarks PRIVATE ${CMAKE_SOURCE_DIR}/../../single_include ${CMAKE_BINARY_DIR}/include)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/benchmarks/src/benchmarks.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/benchmarks/src/benchmarks.cpp
new file mode 100644
index 00000000..40be5ec2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/benchmarks/src/benchmarks.cpp
@@ -0,0 +1,217 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <benchmark/benchmark.h>
+#include <nlohmann/json.hpp>
+#include <fstream>
+#include <numeric>
+#include <vector>
+#include <test_data.hpp>
+
+using json = nlohmann::json;
+
+//////////////////////////////////////////////////////////////////////////////
+// parse JSON from file
+//////////////////////////////////////////////////////////////////////////////
+
+static void ParseFile(benchmark::State& state, const char* filename)
+{
+    while (state.KeepRunning())
+    {
+        state.PauseTiming();
+        auto* f = new std::ifstream(filename);
+        auto* j = new json();
+        state.ResumeTiming();
+
+        *j = json::parse(*f);
+
+        state.PauseTiming();
+        delete f;
+        delete j;
+        state.ResumeTiming();
+    }
+
+    std::ifstream file(filename, std::ios::binary | std::ios::ate);
+    state.SetBytesProcessed(state.iterations() * file.tellg());
+}
+BENCHMARK_CAPTURE(ParseFile, jeopardy,          TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
+BENCHMARK_CAPTURE(ParseFile, canada,            TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
+BENCHMARK_CAPTURE(ParseFile, citm_catalog,      TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
+BENCHMARK_CAPTURE(ParseFile, twitter,           TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
+BENCHMARK_CAPTURE(ParseFile, floats,            TEST_DATA_DIRECTORY "/regression/floats.json");
+BENCHMARK_CAPTURE(ParseFile, signed_ints,       TEST_DATA_DIRECTORY "/regression/signed_ints.json");
+BENCHMARK_CAPTURE(ParseFile, unsigned_ints,     TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
+BENCHMARK_CAPTURE(ParseFile, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
+
+//////////////////////////////////////////////////////////////////////////////
+// parse JSON from string
+//////////////////////////////////////////////////////////////////////////////
+
+static void ParseString(benchmark::State& state, const char* filename)
+{
+    std::ifstream f(filename);
+    std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
+
+    while (state.KeepRunning())
+    {
+        state.PauseTiming();
+        auto* j = new json();
+        state.ResumeTiming();
+
+        *j = json::parse(str);
+
+        state.PauseTiming();
+        delete j;
+        state.ResumeTiming();
+    }
+
+    state.SetBytesProcessed(state.iterations() * str.size());
+}
+BENCHMARK_CAPTURE(ParseString, jeopardy,          TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
+BENCHMARK_CAPTURE(ParseString, canada,            TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
+BENCHMARK_CAPTURE(ParseString, citm_catalog,      TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
+BENCHMARK_CAPTURE(ParseString, twitter,           TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
+BENCHMARK_CAPTURE(ParseString, floats,            TEST_DATA_DIRECTORY "/regression/floats.json");
+BENCHMARK_CAPTURE(ParseString, signed_ints,       TEST_DATA_DIRECTORY "/regression/signed_ints.json");
+BENCHMARK_CAPTURE(ParseString, unsigned_ints,     TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
+BENCHMARK_CAPTURE(ParseString, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
+
+//////////////////////////////////////////////////////////////////////////////
+// serialize JSON
+//////////////////////////////////////////////////////////////////////////////
+
+static void Dump(benchmark::State& state, const char* filename, int indent)
+{
+    std::ifstream f(filename);
+    std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
+    json j = json::parse(str);
+
+    while (state.KeepRunning())
+    {
+        j.dump(indent);
+    }
+
+    state.SetBytesProcessed(state.iterations() * j.dump(indent).size());
+}
+BENCHMARK_CAPTURE(Dump, jeopardy / -,          TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json",                 -1);
+BENCHMARK_CAPTURE(Dump, jeopardy / 4,          TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json",                 4);
+BENCHMARK_CAPTURE(Dump, canada / -,            TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json",       -1);
+BENCHMARK_CAPTURE(Dump, canada / 4,            TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json",       4);
+BENCHMARK_CAPTURE(Dump, citm_catalog / -,      TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json", -1);
+BENCHMARK_CAPTURE(Dump, citm_catalog / 4,      TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json", 4);
+BENCHMARK_CAPTURE(Dump, twitter / -,           TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json",      -1);
+BENCHMARK_CAPTURE(Dump, twitter / 4,           TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json",      4);
+BENCHMARK_CAPTURE(Dump, floats / -,            TEST_DATA_DIRECTORY "/regression/floats.json",                 -1);
+BENCHMARK_CAPTURE(Dump, floats / 4,            TEST_DATA_DIRECTORY "/regression/floats.json",                 4);
+BENCHMARK_CAPTURE(Dump, signed_ints / -,       TEST_DATA_DIRECTORY "/regression/signed_ints.json",            -1);
+BENCHMARK_CAPTURE(Dump, signed_ints / 4,       TEST_DATA_DIRECTORY "/regression/signed_ints.json",            4);
+BENCHMARK_CAPTURE(Dump, unsigned_ints / -,     TEST_DATA_DIRECTORY "/regression/unsigned_ints.json",          -1);
+BENCHMARK_CAPTURE(Dump, unsigned_ints / 4,     TEST_DATA_DIRECTORY "/regression/unsigned_ints.json",          4);
+BENCHMARK_CAPTURE(Dump, small_signed_ints / -, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json",      -1);
+BENCHMARK_CAPTURE(Dump, small_signed_ints / 4, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json",      4);
+
+//////////////////////////////////////////////////////////////////////////////
+// serialize CBOR
+//////////////////////////////////////////////////////////////////////////////
+static void ToCbor(benchmark::State& state, const char* filename)
+{
+    std::ifstream f(filename);
+    std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
+    json j = json::parse(str);
+
+    while (state.KeepRunning())
+    {
+        json::to_cbor(j);
+    }
+
+    state.SetBytesProcessed(state.iterations() * json::to_cbor(j).size());
+}
+BENCHMARK_CAPTURE(ToCbor, jeopardy,          TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
+BENCHMARK_CAPTURE(ToCbor, canada,            TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
+BENCHMARK_CAPTURE(ToCbor, citm_catalog,      TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
+BENCHMARK_CAPTURE(ToCbor, twitter,           TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
+BENCHMARK_CAPTURE(ToCbor, floats,            TEST_DATA_DIRECTORY "/regression/floats.json");
+BENCHMARK_CAPTURE(ToCbor, signed_ints,       TEST_DATA_DIRECTORY "/regression/signed_ints.json");
+BENCHMARK_CAPTURE(ToCbor, unsigned_ints,     TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
+BENCHMARK_CAPTURE(ToCbor, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
+
+//////////////////////////////////////////////////////////////////////////////
+// Parse Msgpack
+//////////////////////////////////////////////////////////////////////////////
+
+static void FromMsgpack(benchmark::State& state, const char* filename)
+{
+    std::ifstream f(filename);
+    std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
+    auto bytes = json::to_msgpack(json::parse(str));
+    std::ofstream o("test.msgpack");
+    o.write((char*)bytes.data(), bytes.size());
+    o.flush();
+    o.close();
+    for (auto _ : state)
+    {
+        state.PauseTiming();
+        auto* j = new json();
+        auto file = fopen("test.msgpack", "rb");
+        state.ResumeTiming();
+
+        *j = json::from_msgpack(file);
+
+        state.PauseTiming();
+        fclose(file);
+        delete j;
+        state.ResumeTiming();
+    }
+
+    state.SetBytesProcessed(state.iterations() * bytes.size());
+}
+
+BENCHMARK_CAPTURE(FromMsgpack, jeopardy, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
+BENCHMARK_CAPTURE(FromMsgpack, canada, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
+BENCHMARK_CAPTURE(FromMsgpack, citm_catalog, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
+BENCHMARK_CAPTURE(FromMsgpack, twitter, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
+BENCHMARK_CAPTURE(FromMsgpack, floats, TEST_DATA_DIRECTORY "/regression/floats.json");
+BENCHMARK_CAPTURE(FromMsgpack, signed_ints, TEST_DATA_DIRECTORY "/regression/signed_ints.json");
+BENCHMARK_CAPTURE(FromMsgpack, unsigned_ints, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
+BENCHMARK_CAPTURE(FromMsgpack, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
+
+//////////////////////////////////////////////////////////////////////////////
+// serialize binary CBOR
+//////////////////////////////////////////////////////////////////////////////
+static void BinaryToCbor(benchmark::State& state)
+{
+    std::vector<uint8_t> data(256);
+    std::iota(data.begin(), data.end(), 0);
+
+    auto it = data.begin();
+    std::vector<uint8_t> in;
+    in.reserve(state.range(0));
+    for (int i = 0; i < state.range(0); ++i)
+    {
+        if (it == data.end())
+        {
+            it = data.begin();
+        }
+
+        in.push_back(*it);
+        ++it;
+    }
+
+    json::binary_t bin{in};
+    json j{{"type", "binary"}, {"data", bin}};
+
+    while (state.KeepRunning())
+    {
+        json::to_cbor(j);
+    }
+
+    state.SetBytesProcessed(state.iterations() * json::to_cbor(j).size());
+}
+BENCHMARK(BinaryToCbor)->RangeMultiplier(2)->Range(8, 8 << 12);
+
+BENCHMARK_MAIN();
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/CMakeLists.txt
new file mode 100644
index 00000000..21c736a7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/CMakeLists.txt
@@ -0,0 +1,18 @@
+add_test(NAME cmake_add_subdirectory_configure
+  COMMAND ${CMAKE_COMMAND}
+    -G "${CMAKE_GENERATOR}"
+    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+    -Dnlohmann_json_source=${PROJECT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/project
+)
+add_test(NAME cmake_add_subdirectory_build
+  COMMAND ${CMAKE_COMMAND} --build .
+)
+set_tests_properties(cmake_add_subdirectory_configure PROPERTIES
+  FIXTURES_SETUP cmake_add_subdirectory
+  LABELS not_reproducible
+)
+set_tests_properties(cmake_add_subdirectory_build PROPERTIES
+  FIXTURES_REQUIRED cmake_add_subdirectory
+  LABELS not_reproducible
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/project/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/project/CMakeLists.txt
new file mode 100644
index 00000000..0695305f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/project/CMakeLists.txt
@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.1...3.14)
+
+project(DummyImport CXX)
+
+set(JSON_BuildTests OFF CACHE INTERNAL "")
+add_subdirectory(${nlohmann_json_source}
+   ${CMAKE_CURRENT_BINARY_DIR}/nlohmann_json)
+
+add_executable(with_namespace_target main.cpp)
+target_link_libraries(with_namespace_target nlohmann_json::nlohmann_json)
+
+add_executable(without_namespace_target main.cpp)
+target_link_libraries(without_namespace_target nlohmann_json)
+
+if(NOT MSVC)
+    add_executable(without_exceptions main.cpp)
+    target_link_libraries(without_exceptions nlohmann_json::nlohmann_json)
+    target_compile_definitions(without_exceptions PRIVATE JSON_NOEXCEPTION)
+    target_compile_options(without_exceptions PRIVATE -fno-exceptions)
+endif()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/project/main.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/project/main.cpp
new file mode 100644
index 00000000..ebdde5c8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_add_subdirectory/project/main.cpp
@@ -0,0 +1,16 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <nlohmann/json.hpp>
+
+int main(int argc, char** argv)
+{
+    nlohmann::json j;
+
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/CMakeLists.txt
new file mode 100644
index 00000000..7df00865
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/CMakeLists.txt
@@ -0,0 +1,20 @@
+if (${CMAKE_VERSION} VERSION_GREATER "3.11.0")
+  add_test(NAME cmake_fetch_content_configure
+    COMMAND ${CMAKE_COMMAND}
+    -G "${CMAKE_GENERATOR}"
+    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+    -Dnlohmann_json_source=${PROJECT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/project
+  )
+  add_test(NAME cmake_fetch_content_build
+    COMMAND ${CMAKE_COMMAND} --build .
+  )
+  set_tests_properties(cmake_fetch_content_configure PROPERTIES
+    FIXTURES_SETUP cmake_fetch_content
+    LABELS "git_required;not_reproducible"
+  )
+  set_tests_properties(cmake_fetch_content_build PROPERTIES
+    FIXTURES_REQUIRED cmake_fetch_content
+    LABELS "git_required;not_reproducible"
+  )
+endif()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/project/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/project/CMakeLists.txt
new file mode 100644
index 00000000..b64af9ea
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/project/CMakeLists.txt
@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.11...3.14)
+
+project(DummyImport CXX)
+
+include(FetchContent)
+
+get_filename_component(GIT_REPOSITORY_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/../../.. ABSOLUTE)
+FetchContent_Declare(json GIT_REPOSITORY ${GIT_REPOSITORY_DIRECTORY} GIT_TAG HEAD)
+
+FetchContent_GetProperties(json)
+if(NOT json_POPULATED)
+  FetchContent_Populate(json)
+  add_subdirectory(${json_SOURCE_DIR} ${json_BINARY_DIR} EXCLUDE_FROM_ALL)
+endif()
+
+add_executable(with_namespace_target main.cpp)
+target_link_libraries(with_namespace_target nlohmann_json::nlohmann_json)
+
+add_executable(without_namespace_target main.cpp)
+target_link_libraries(without_namespace_target nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/project/main.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/project/main.cpp
new file mode 100644
index 00000000..ebdde5c8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content/project/main.cpp
@@ -0,0 +1,16 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <nlohmann/json.hpp>
+
+int main(int argc, char** argv)
+{
+    nlohmann::json j;
+
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/CMakeLists.txt
new file mode 100644
index 00000000..40e75e83
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/CMakeLists.txt
@@ -0,0 +1,20 @@
+if (${CMAKE_VERSION} VERSION_GREATER "3.14.0")
+  add_test(NAME cmake_fetch_content2_configure
+    COMMAND ${CMAKE_COMMAND}
+    -G "${CMAKE_GENERATOR}"
+    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+    -Dnlohmann_json_source=${PROJECT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/project
+  )
+  add_test(NAME cmake_fetch_content2_build
+    COMMAND ${CMAKE_COMMAND} --build .
+  )
+  set_tests_properties(cmake_fetch_content2_configure PROPERTIES
+    FIXTURES_SETUP cmake_fetch_content2
+    LABELS "git_required;not_reproducible"
+  )
+  set_tests_properties(cmake_fetch_content2_build PROPERTIES
+    FIXTURES_REQUIRED cmake_fetch_content2
+    LABELS "git_required;not_reproducible"
+  )
+endif()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/project/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/project/CMakeLists.txt
new file mode 100644
index 00000000..734b9cc0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/project/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.14)
+
+project(DummyImport CXX)
+
+include(FetchContent)
+
+get_filename_component(GIT_REPOSITORY_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/../../.. ABSOLUTE)
+FetchContent_Declare(json GIT_REPOSITORY ${GIT_REPOSITORY_DIRECTORY} GIT_TAG HEAD)
+FetchContent_MakeAvailable(json)
+
+add_executable(with_namespace_target main.cpp)
+target_link_libraries(with_namespace_target nlohmann_json::nlohmann_json)
+
+add_executable(without_namespace_target main.cpp)
+target_link_libraries(without_namespace_target nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/project/main.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/project/main.cpp
new file mode 100644
index 00000000..ebdde5c8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_fetch_content2/project/main.cpp
@@ -0,0 +1,16 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <nlohmann/json.hpp>
+
+int main(int argc, char** argv)
+{
+    nlohmann::json j;
+
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/CMakeLists.txt
new file mode 100644
index 00000000..13290b2e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/CMakeLists.txt
@@ -0,0 +1,19 @@
+add_test(NAME cmake_import_configure
+  COMMAND ${CMAKE_COMMAND}
+    -G "${CMAKE_GENERATOR}"
+    -A "${CMAKE_GENERATOR_PLATFORM}"
+    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+    -Dnlohmann_json_DIR=${PROJECT_BINARY_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/project
+)
+add_test(NAME cmake_import_build
+  COMMAND ${CMAKE_COMMAND} --build .
+)
+set_tests_properties(cmake_import_configure PROPERTIES
+  FIXTURES_SETUP cmake_import
+  LABELS not_reproducible
+)
+set_tests_properties(cmake_import_build PROPERTIES
+  FIXTURES_REQUIRED cmake_import
+  LABELS not_reproducible
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/project/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/project/CMakeLists.txt
new file mode 100644
index 00000000..585f34ce
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/project/CMakeLists.txt
@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 3.1...3.14)
+
+project(DummyImport CXX)
+
+find_package(nlohmann_json REQUIRED)
+
+add_executable(with_namespace_target main.cpp)
+target_link_libraries(with_namespace_target nlohmann_json::nlohmann_json)
+
+add_executable(without_namespace_target main.cpp)
+target_link_libraries(without_namespace_target nlohmann_json)
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/project/main.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/project/main.cpp
new file mode 100644
index 00000000..ebdde5c8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import/project/main.cpp
@@ -0,0 +1,16 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <nlohmann/json.hpp>
+
+int main(int argc, char** argv)
+{
+    nlohmann::json j;
+
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/CMakeLists.txt
new file mode 100644
index 00000000..6d8db439
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/CMakeLists.txt
@@ -0,0 +1,19 @@
+add_test(NAME cmake_import_minver_configure
+  COMMAND ${CMAKE_COMMAND}
+    -G "${CMAKE_GENERATOR}"
+    -A "${CMAKE_GENERATOR_PLATFORM}"
+    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+    -Dnlohmann_json_DIR=${PROJECT_BINARY_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/project
+)
+add_test(NAME cmake_import_minver_build
+  COMMAND ${CMAKE_COMMAND} --build .
+)
+set_tests_properties(cmake_import_minver_configure PROPERTIES
+  FIXTURES_SETUP cmake_import_minver
+  LABELS not_reproducible
+)
+set_tests_properties(cmake_import_minver_build PROPERTIES
+  FIXTURES_REQUIRED cmake_import_minver
+  LABELS not_reproducible
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/project/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/project/CMakeLists.txt
new file mode 100644
index 00000000..25e40bfa
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/project/CMakeLists.txt
@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.1...3.14)
+
+project(DummyImportMinVer CXX)
+
+find_package(nlohmann_json 3.2.0 REQUIRED)
+
+add_executable(with_namespace_target main.cpp)
+target_link_libraries(with_namespace_target nlohmann_json::nlohmann_json)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/project/main.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/project/main.cpp
new file mode 100644
index 00000000..ebdde5c8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_import_minver/project/main.cpp
@@ -0,0 +1,16 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <nlohmann/json.hpp>
+
+int main(int argc, char** argv)
+{
+    nlohmann::json j;
+
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/CMakeLists.txt
new file mode 100644
index 00000000..0a324cb9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/CMakeLists.txt
@@ -0,0 +1,18 @@
+add_test(NAME cmake_target_include_directories_configure
+  COMMAND ${CMAKE_COMMAND}
+    -G "${CMAKE_GENERATOR}"
+    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+    -Dnlohmann_json_source=${PROJECT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/project
+)
+add_test(NAME cmake_target_include_directories_build
+    COMMAND ${CMAKE_COMMAND} --build .
+)
+set_tests_properties(cmake_target_include_directories_configure PROPERTIES
+    FIXTURES_SETUP cmake_target_include_directories
+    LABELS not_reproducible
+)
+set_tests_properties(cmake_target_include_directories_build PROPERTIES
+    FIXTURES_REQUIRED cmake_target_include_directories
+    LABELS not_reproducible
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Bar.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Bar.cpp
new file mode 100644
index 00000000..adcdc87c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Bar.cpp
@@ -0,0 +1,11 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "Bar.hpp"
+
+class Bar;
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Bar.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Bar.hpp
new file mode 100644
index 00000000..ddfb9e75
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Bar.hpp
@@ -0,0 +1,12 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <nlohmann/json.hpp>
+#include "Foo.hpp"
+
+class Bar : public Foo {};
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/CMakeLists.txt
new file mode 100644
index 00000000..26b55cd8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/CMakeLists.txt
@@ -0,0 +1,21 @@
+cmake_minimum_required(VERSION 3.1...3.14)
+
+project(DummyImport CXX)
+
+add_executable(with_private_target main.cpp)
+target_include_directories(with_private_target PRIVATE ${nlohmann_json_source}/include)
+set_target_properties(with_private_target PROPERTIES CXX_STANDARD 11)
+
+add_executable(with_private_system_target main.cpp)
+target_include_directories(with_private_system_target PRIVATE SYSTEM ${nlohmann_json_source}/include)
+set_target_properties(with_private_system_target PROPERTIES CXX_STANDARD 11)
+
+# regression from https://github.com/nlohmann/json/discussions/2281
+add_library(Foo STATIC Foo.cpp Bar.cpp)
+target_include_directories(Foo PUBLIC ${CMAKE_CURRENT_SOURCE_DIR} ${nlohmann_json_source}/include)
+set_target_properties(Foo PROPERTIES CXX_STANDARD 11)
+
+add_library(Bar STATIC Bar.cpp)
+target_link_libraries(Bar PRIVATE Foo)
+target_include_directories(Bar PUBLIC ${CMAKE_CURRENT_SOURCE_DIR} ${nlohmann_json_source}/include)
+set_target_properties(Bar PROPERTIES CXX_STANDARD 11)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Foo.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Foo.cpp
new file mode 100644
index 00000000..c3ffe11e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Foo.cpp
@@ -0,0 +1,11 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "Foo.hpp"
+
+class Foo;
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Foo.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Foo.hpp
new file mode 100644
index 00000000..a26dead0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/Foo.hpp
@@ -0,0 +1,12 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+#include <nlohmann/json.hpp>
+
+class Foo {};
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/main.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/main.cpp
new file mode 100644
index 00000000..ebdde5c8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cmake_target_include_directories/project/main.cpp
@@ -0,0 +1,16 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <nlohmann/json.hpp>
+
+int main(int argc, char** argv)
+{
+    nlohmann::json j;
+
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cuda_example/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cuda_example/CMakeLists.txt
new file mode 100644
index 00000000..26b57f22
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cuda_example/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.18)
+project(json_cuda LANGUAGES CUDA)
+
+add_executable(json_cuda json_cuda.cu)
+target_include_directories(json_cuda PRIVATE ../../include)
+target_compile_features(json_cuda PUBLIC cuda_std_11)
+set_target_properties(json_cuda PROPERTIES
+    CUDA_EXTENSIONS OFF
+    CUDA_STANDARD_REQUIRED ON
+)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cuda_example/json_cuda.cu b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cuda_example/json_cuda.cu
new file mode 100644
index 00000000..02084a79
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/cuda_example/json_cuda.cu
@@ -0,0 +1,19 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <nlohmann/json.hpp>
+
+int main()
+{
+    nlohmann::ordered_json json = {"Test"};
+    json.dump();
+
+    // regression for #3013 (ordered_json::reset() compile error with nvcc)
+    nlohmann::ordered_json metadata;
+    metadata.erase("key");
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/fuzzing.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/fuzzing.md
new file mode 100644
index 00000000..cfbf4f24
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/fuzzing.md
@@ -0,0 +1,81 @@
+# Fuzz testing
+
+Each parser of the library (JSON, BJData, BSON, CBOR, MessagePack, and UBJSON) can be fuzz tested. Currently,
+[libFuzzer](https://llvm.org/docs/LibFuzzer.html) and [afl++](https://github.com/AFLplusplus/AFLplusplus) are supported.
+
+## Corpus creation
+
+For most effective fuzzing, a [corpus](https://llvm.org/docs/LibFuzzer.html#corpus) should be provided. A corpus is a
+directory with some simple input files that cover several features of the parser and is hence a good starting point
+for mutations.
+
+```shell
+TEST_DATA_VERSION=3.1.0
+wget https://github.com/nlohmann/json_test_data/archive/refs/tags/v$TEST_DATA_VERSION.zip
+unzip v$TEST_DATA_VERSION.zip
+rm v$TEST_DATA_VERSION.zip
+for FORMAT in json bjdata bson cbor msgpack ubjson
+do
+  rm -fr corpus_$FORMAT
+  mkdir corpus_$FORMAT
+  find json_test_data-$TEST_DATA_VERSION -size -5k -name "*.$FORMAT" -exec cp "{}" "corpus_$FORMAT" \;
+done
+rm -fr json_test_data-$TEST_DATA_VERSION
+```
+
+The generated corpus can be used with both libFuzzer and afl++. The remainder of this documentation assumes the corpus
+directories have been created in the `tests` directory.
+
+## libFuzzer
+
+To use libFuzzer, you need to pass `-fsanitize=fuzzer` as `FUZZER_ENGINE`. In the `tests` directory, call
+
+```shell
+make fuzzers FUZZER_ENGINE="-fsanitize=fuzzer"
+```
+
+This creates a fuzz tester binary for each parser that supports these
+[command line options](https://llvm.org/docs/LibFuzzer.html#options).
+
+In case your default compiler is not a Clang compiler that includes libFuzzer (Clang 6.0 or later), you need to set the
+`CXX` variable accordingly. Note the compiler provided by Xcode (AppleClang) does not contain libFuzzer. Please install
+Clang via Homebrew calling `brew install llvm` and add `CXX=$(brew --prefix llvm)/bin/clang` to the `make` call:
+
+```shell
+make fuzzers FUZZER_ENGINE="-fsanitize=fuzzer" CXX=$(brew --prefix llvm)/bin/clang
+```
+
+Then pass the corpus directory as command-line argument (assuming it is located in `tests`):
+
+```shell
+./parse_cbor_fuzzer corpus_cbor
+```
+
+The fuzzer should be able to run indefinitely without crashing. In case of a crash, the tested input is dumped into
+a file starting with `crash-`.
+
+## afl++
+
+To use afl++, you need to pass `-fsanitize=fuzzer` as `FUZZER_ENGINE`. It will be replaced by a `libAFLDriver.a` to
+re-use the same code written for libFuzzer with afl++. Furthermore, set `afl-clang-fast++` as compiler.
+
+```shell
+CXX=afl-clang-fast++ make fuzzers FUZZER_ENGINE="-fsanitize=fuzzer" 
+```
+
+Then the fuzzer is called like this in the `tests` directory:
+
+```shell
+afl-fuzz -i corpus_cbor -o out  -- ./parse_cbor_fuzzer 
+```
+
+The fuzzer should be able to run indefinitely without crashing. In case of a crash, the tested input is written to the
+directory `out`.
+
+## OSS-Fuzz
+
+The library is further fuzz-tested 24/7 by Google's [OSS-Fuzz project](https://github.com/google/oss-fuzz). It uses
+the same `fuzzers` target as above and also relies on the `FUZZER_ENGINE` variable. See the used
+[build script](https://github.com/google/oss-fuzz/blob/master/projects/json/build.sh) for more information.
+
+In case the build at OSS-Fuzz fails, an issue will be created automatically.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/exec_speed.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/exec_speed.png
new file mode 100644
index 00000000..e40e3414
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/exec_speed.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/fuzz.tiff b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/fuzz.tiff
new file mode 100644
index 00000000..fd11fd72
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/fuzz.tiff differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/high_freq.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/high_freq.png
new file mode 100644
index 00000000..6e595f10
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/high_freq.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/index.html b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/index.html
new file mode 100644
index 00000000..d0c402b7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/index.html
@@ -0,0 +1,10 @@
+<table style="font-family: 'Trebuchet MS', 'Tahoma', 'Arial', 'Helvetica'">
+<tr><td style="width: 18ex"><b>Banner:</b></td><td>fuzz</td></tr>
+<tr><td><b>Directory:</b></td><td>fuzz-testing/out</td></tr>
+<tr><td><b>Generated on:</b></td><td>Mo 29 Aug 2016 22:14:22 CEST</td></tr>
+</table>
+<p>
+<img src="high_freq.png" width=1000 height=300><p>
+<img src="low_freq.png" width=1000 height=200><p>
+<img src="exec_speed.png" width=1000 height=200>
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/low_freq.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/low_freq.png
new file mode 100644
index 00000000..6b312141
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-08-29-fuzz/low_freq.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-09-09-nativejson_benchmark/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-09-09-nativejson_benchmark/README.md
new file mode 100644
index 00000000..859c3133
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-09-09-nativejson_benchmark/README.md
@@ -0,0 +1,31 @@
+Results of the latest benchmark from <https://github.com/miloyip/nativejson-benchmark>.
+
+See <https://github.com/nlohmann/json/issues/307> for discussion.
+
+Original post at 2016-09-09 to <json@yahoogroups.com>:
+
+> Hi,
+> 
+> This benchmark evaluated conformance, parse/stringify speed/memory, and
+> code size. It can also be viewed as a long list of open source C/C++ JSON
+> libraries.
+> 
+> You can run the benchmark on your own machine by checkout this project.
+> 
+> https://github.com/miloyip/nativejson-benchmark
+> 
+> You can also view some sample results here:
+> 
+> https://rawgit.com/miloyip/nativejson-benchmark/master/sample/conformance.html
+> https://rawgit.com/miloyip/nativejson-benchmark/master/sample/performance_Corei7-4980HQ@2.80GHz_mac64_clang7.0.html
+> 
+> If you make a new library, you may use this for testing conformance and
+> performance. Afterwards, please submit a pull request.
+> 
+> Enjoy!
+> 
+> -- 
+> Milo Yip
+> 
+> https://github.com/miloyip/
+> http://twitter.com/miloyip/
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-09-09-nativejson_benchmark/conformance_Nlohmann (C++11).md b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-09-09-nativejson_benchmark/conformance_Nlohmann (C++11).md
new file mode 100644
index 00000000..31dab46b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-09-09-nativejson_benchmark/conformance_Nlohmann (C++11).md	
@@ -0,0 +1,670 @@
+
+
+
+
+<!DOCTYPE html>
+<html lang="en" class="">
+  <head prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb# object: http://ogp.me/ns/object# article: http://ogp.me/ns/article# profile: http://ogp.me/ns/profile#">
+    <meta charset='utf-8'>
+    
+
+    <link crossorigin="anonymous" href="https://assets-cdn.github.com/assets/frameworks-3a71f36dec04358c4f2f42280fb2cf5c38856f935a3f609eab0a1ae31b1d635a.css" media="all" rel="stylesheet" />
+    <link crossorigin="anonymous" href="https://assets-cdn.github.com/assets/github-5c885e880e980dc7f119393287b84906d930ccaff83f6bff8ae2c086b87ca4d8.css" media="all" rel="stylesheet" />
+    
+    
+    <link crossorigin="anonymous" href="https://assets-cdn.github.com/assets/site-4ef7bbe907458c89cb1f7f5c5e6c4cd87e03acf66b1817325e644920d2a83330.css" media="all" rel="stylesheet" />
+    
+
+    <link as="script" href="https://assets-cdn.github.com/assets/frameworks-88471af1fec40ff9418efbe2ddd15b6896af8d772f8179004c254dffc25ea490.js" rel="preload" />
+    
+    <link as="script" href="https://assets-cdn.github.com/assets/github-e18e11a943ff2eb9394c72d4ec8b76592c454915b5839ae177d422777a046e29.js" rel="preload" />
+
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta http-equiv="Content-Language" content="en">
+    <meta name="viewport" content="width=device-width">
+    
+    <title>nativejson-benchmark/conformance_Nlohmann (C++11).md at master · miloyip/nativejson-benchmark · GitHub</title>
+    <link rel="search" type="application/opensearchdescription+xml" href="/opensearch.xml" title="GitHub">
+    <link rel="fluid-icon" href="https://github.com/fluidicon.png" title="GitHub">
+    <link rel="apple-touch-icon" href="/apple-touch-icon.png">
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+    <meta property="fb:app_id" content="1401488693436528">
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+    <article class="markdown-body entry-content" itemprop="text"><h1><a id="user-content-conformance-of-nlohmann-c11" class="anchor" href="#conformance-of-nlohmann-c11" aria-hidden="true"><svg aria-hidden="true" class="octicon octicon-link" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Conformance of Nlohmann (C++11)</h1>
+
+<h2><a id="user-content-1-parse-validation" class="anchor" href="#1-parse-validation" aria-hidden="true"><svg aria-hidden="true" class="octicon octicon-link" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>1. Parse Validation</h2>
+
+<p>Summary: 34 of 34 are correct.</p>
+
+<h2><a id="user-content-2-parse-double" class="anchor" href="#2-parse-double" aria-hidden="true"><svg aria-hidden="true" class="octicon octicon-link" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>2. Parse Double</h2>
+
+<p>Summary: 66 of 66 are correct.</p>
+
+<h2><a id="user-content-3-parse-string" class="anchor" href="#3-parse-string" aria-hidden="true"><svg aria-hidden="true" class="octicon octicon-link" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>3. Parse String</h2>
+
+<p>Summary: 9 of 9 are correct.</p>
+
+<h2><a id="user-content-4-roundtrip" class="anchor" href="#4-roundtrip" aria-hidden="true"><svg aria-hidden="true" class="octicon octicon-link" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>4. Roundtrip</h2>
+
+<ul>
+<li>Fail:</li>
+</ul>
+
+<div class="highlight highlight-source-js"><pre>[<span class="pl-c1">5e-324</span>]</pre></div>
+
+<div class="highlight highlight-source-js"><pre>[<span class="pl-c1">4.94065645841247e-324</span>]</pre></div>
+
+<ul>
+<li>Fail:</li>
+</ul>
+
+<div class="highlight highlight-source-js"><pre>[<span class="pl-c1">2.225073858507201e-308</span>]</pre></div>
+
+<div class="highlight highlight-source-js"><pre>[<span class="pl-c1">2.2250738585072e-308</span>]</pre></div>
+
+<ul>
+<li>Fail:</li>
+</ul>
+
+<div class="highlight highlight-source-js"><pre>[<span class="pl-c1">2.2250738585072014e-308</span>]</pre></div>
+
+<div class="highlight highlight-source-js"><pre>[<span class="pl-c1">2.2250738585072e-308</span>]</pre></div>
+
+<ul>
+<li>Fail:</li>
+</ul>
+
+<div class="highlight highlight-source-js"><pre>[<span class="pl-c1">1.7976931348623157e308</span>]</pre></div>
+
+<div class="highlight highlight-source-js"><pre>[<span class="pl-c1">1.79769313486232e+308</span>]</pre></div>
+
+<p>Summary: 23 of 27 are correct.</p>
+</article>
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diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-10-02-fuzz/high_freq.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-10-02-fuzz/high_freq.png
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diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-10-02-fuzz/index.html b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-10-02-fuzz/index.html
new file mode 100644
index 00000000..d792a092
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-10-02-fuzz/index.html
@@ -0,0 +1,10 @@
+<table style="font-family: 'Trebuchet MS', 'Tahoma', 'Arial', 'Helvetica'">
+<tr><td style="width: 18ex"><b>Banner:</b></td><td>fuzz</td></tr>
+<tr><td><b>Directory:</b></td><td>fuzz-testing/out</td></tr>
+<tr><td><b>Generated on:</b></td><td>Sun Oct  2 08:51:02 CEST 2016</td></tr>
+</table>
+<p>
+<img src="high_freq.png" width=1000 height=300><p>
+<img src="low_freq.png" width=1000 height=200><p>
+<img src="exec_speed.png" width=1000 height=200>
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-10-02-fuzz/low_freq.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/reports/2016-10-02-fuzz/low_freq.png
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diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-driver_afl.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-driver_afl.cpp
new file mode 100644
index 00000000..79767bae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-driver_afl.cpp
@@ -0,0 +1,39 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/*
+This file implements a driver for American Fuzzy Lop (afl-fuzz). It relies on
+an implementation of the `LLVMFuzzerTestOneInput` function which processes a
+passed byte array.
+*/
+
+#include <vector>    // for vector
+#include <cstdint>   // for uint8_t
+#include <iostream>  // for cin
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
+
+int main()
+{
+#ifdef __AFL_HAVE_MANUAL_CONTROL
+    while (__AFL_LOOP(1000))
+    {
+#endif
+        // copy stdin to byte vector
+        std::vector<uint8_t> vec;
+        char c = 0;
+        while (std::cin.get(c))
+        {
+            vec.push_back(static_cast<uint8_t>(c));
+        }
+
+        LLVMFuzzerTestOneInput(vec.data(), vec.size());
+#ifdef __AFL_HAVE_MANUAL_CONTROL
+    }
+#endif
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_bjdata.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_bjdata.cpp
new file mode 100644
index 00000000..b5a209ea
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_bjdata.cpp
@@ -0,0 +1,85 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/*
+This file implements a parser test suitable for fuzz testing. Given a byte
+array data, it performs the following steps:
+
+- j1 = from_bjdata(data)
+- vec = to_bjdata(j1)
+- j2 = from_bjdata(vec)
+- assert(j1 == j2)
+- vec2 = to_bjdata(j1, use_size = true, use_type = false)
+- j3 = from_bjdata(vec2)
+- assert(j1 == j3)
+- vec3 = to_bjdata(j1, use_size = true, use_type = true)
+- j4 = from_bjdata(vec3)
+- assert(j1 == j4)
+
+The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
+drivers.
+*/
+
+#include <iostream>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+// see http://llvm.org/docs/LibFuzzer.html
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    try
+    {
+        // step 1: parse input
+        std::vector<uint8_t> const vec1(data, data + size);
+        json const j1 = json::from_bjdata(vec1);
+
+        try
+        {
+            // step 2.1: round trip without adding size annotations to container types
+            std::vector<uint8_t> const vec2 = json::to_bjdata(j1, false, false);
+
+            // step 2.2: round trip with adding size annotations but without adding type annotations to container types
+            std::vector<uint8_t> const vec3 = json::to_bjdata(j1, true, false);
+
+            // step 2.3: round trip with adding size as well as type annotations to container types
+            std::vector<uint8_t> const vec4 = json::to_bjdata(j1, true, true);
+
+            // parse serialization
+            json const j2 = json::from_bjdata(vec2);
+            json const j3 = json::from_bjdata(vec3);
+            json const j4 = json::from_bjdata(vec4);
+
+            // serializations must match
+            assert(json::to_bjdata(j2, false, false) == vec2);
+            assert(json::to_bjdata(j3, true, false) == vec3);
+            assert(json::to_bjdata(j4, true, true) == vec4);
+        }
+        catch (const json::parse_error&)
+        {
+            // parsing a BJData serialization must not fail
+            assert(false);
+        }
+    }
+    catch (const json::parse_error&)
+    {
+        // parse errors are ok, because input may be random bytes
+    }
+    catch (const json::type_error&)
+    {
+        // type errors can occur during parsing, too
+    }
+    catch (const json::out_of_range&)
+    {
+        // out of range errors may happen if provided sizes are excessive
+    }
+
+    // return 0 - non-zero return values are reserved for future use
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_bson.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_bson.cpp
new file mode 100644
index 00000000..0b02323b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_bson.cpp
@@ -0,0 +1,74 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/*
+This file implements a parser test suitable for fuzz testing. Given a byte
+array data, it performs the following steps:
+
+- j1 = from_bson(data)
+- vec = to_bson(j1)
+- j2 = from_bson(vec)
+- assert(j1 == j2)
+
+The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
+drivers.
+*/
+
+#include <iostream>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+// see http://llvm.org/docs/LibFuzzer.html
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    try
+    {
+        // step 1: parse input
+        std::vector<uint8_t> const vec1(data, data + size);
+        json const j1 = json::from_bson(vec1);
+
+        if (j1.is_discarded())
+        {
+            return 0;
+        }
+
+        try
+        {
+            // step 2: round trip
+            std::vector<uint8_t> const vec2 = json::to_bson(j1);
+
+            // parse serialization
+            json const j2 = json::from_bson(vec2);
+
+            // serializations must match
+            assert(json::to_bson(j2) == vec2);
+        }
+        catch (const json::parse_error&)
+        {
+            // parsing a BSON serialization must not fail
+            assert(false);
+        }
+    }
+    catch (const json::parse_error&)
+    {
+        // parse errors are ok, because input may be random bytes
+    }
+    catch (const json::type_error&)
+    {
+        // type errors can occur during parsing, too
+    }
+    catch (const json::out_of_range&)
+    {
+        // out of range errors can occur during parsing, too
+    }
+
+    // return 0 - non-zero return values are reserved for future use
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_cbor.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_cbor.cpp
new file mode 100644
index 00000000..2bdf2348
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_cbor.cpp
@@ -0,0 +1,69 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/*
+This file implements a parser test suitable for fuzz testing. Given a byte
+array data, it performs the following steps:
+
+- j1 = from_cbor(data)
+- vec = to_cbor(j1)
+- j2 = from_cbor(vec)
+- assert(j1 == j2)
+
+The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
+drivers.
+*/
+
+#include <iostream>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+// see http://llvm.org/docs/LibFuzzer.html
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    try
+    {
+        // step 1: parse input
+        std::vector<uint8_t> const vec1(data, data + size);
+        json const j1 = json::from_cbor(vec1);
+
+        try
+        {
+            // step 2: round trip
+            std::vector<uint8_t> const vec2 = json::to_cbor(j1);
+
+            // parse serialization
+            json const j2 = json::from_cbor(vec2);
+
+            // serializations must match
+            assert(json::to_cbor(j2) == vec2);
+        }
+        catch (const json::parse_error&)
+        {
+            // parsing a CBOR serialization must not fail
+            assert(false);
+        }
+    }
+    catch (const json::parse_error&)
+    {
+        // parse errors are ok, because input may be random bytes
+    }
+    catch (const json::type_error&)
+    {
+        // type errors can occur during parsing, too
+    }
+    catch (const json::out_of_range&)
+    {
+        // out of range errors can occur during parsing, too
+    }
+
+    // return 0 - non-zero return values are reserved for future use
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_json.cpp
new file mode 100644
index 00000000..d06c0626
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_json.cpp
@@ -0,0 +1,70 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/*
+This file implements a parser test suitable for fuzz testing. Given a byte
+array data, it performs the following steps:
+
+- j1 = parse(data)
+- s1 = serialize(j1)
+- j2 = parse(s1)
+- s2 = serialize(j2)
+- assert(s1 == s2)
+
+The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
+drivers.
+*/
+
+#include <iostream>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+// see http://llvm.org/docs/LibFuzzer.html
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    try
+    {
+        // step 1: parse input
+        json const j1 = json::parse(data, data + size);
+
+        try
+        {
+            // step 2: round trip
+
+            // first serialization
+            std::string const s1 = j1.dump();
+
+            // parse serialization
+            json const j2 = json::parse(s1);
+
+            // second serialization
+            std::string const s2 = j2.dump();
+
+            // serializations must match
+            assert(s1 == s2);
+        }
+        catch (const json::parse_error&)
+        {
+            // parsing a JSON serialization must not fail
+            assert(false);
+        }
+    }
+    catch (const json::parse_error&)
+    {
+        // parse errors are ok, because input may be random bytes
+    }
+    catch (const json::out_of_range&)
+    {
+        // out of range errors may happen if provided sizes are excessive
+    }
+
+    // return 0 - non-zero return values are reserved for future use
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_msgpack.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_msgpack.cpp
new file mode 100644
index 00000000..7737a8a5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_msgpack.cpp
@@ -0,0 +1,69 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/*
+This file implements a parser test suitable for fuzz testing. Given a byte
+array data, it performs the following steps:
+
+- j1 = from_msgpack(data)
+- vec = to_msgpack(j1)
+- j2 = from_msgpack(vec)
+- assert(j1 == j2)
+
+The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
+drivers.
+*/
+
+#include <iostream>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+// see http://llvm.org/docs/LibFuzzer.html
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    try
+    {
+        // step 1: parse input
+        std::vector<uint8_t> const vec1(data, data + size);
+        json const j1 = json::from_msgpack(vec1);
+
+        try
+        {
+            // step 2: round trip
+            std::vector<uint8_t> const vec2 = json::to_msgpack(j1);
+
+            // parse serialization
+            json const j2 = json::from_msgpack(vec2);
+
+            // serializations must match
+            assert(json::to_msgpack(j2) == vec2);
+        }
+        catch (const json::parse_error&)
+        {
+            // parsing a MessagePack serialization must not fail
+            assert(false);
+        }
+    }
+    catch (const json::parse_error&)
+    {
+        // parse errors are ok, because input may be random bytes
+    }
+    catch (const json::type_error&)
+    {
+        // type errors can occur during parsing, too
+    }
+    catch (const json::out_of_range&)
+    {
+        // out of range errors may happen if provided sizes are excessive
+    }
+
+    // return 0 - non-zero return values are reserved for future use
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_ubjson.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_ubjson.cpp
new file mode 100644
index 00000000..f2331865
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/fuzzer-parse_ubjson.cpp
@@ -0,0 +1,85 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/*
+This file implements a parser test suitable for fuzz testing. Given a byte
+array data, it performs the following steps:
+
+- j1 = from_ubjson(data)
+- vec = to_ubjson(j1)
+- j2 = from_ubjson(vec)
+- assert(j1 == j2)
+- vec2 = to_ubjson(j1, use_size = true, use_type = false)
+- j3 = from_ubjson(vec2)
+- assert(j1 == j3)
+- vec3 = to_ubjson(j1, use_size = true, use_type = true)
+- j4 = from_ubjson(vec3)
+- assert(j1 == j4)
+
+The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
+drivers.
+*/
+
+#include <iostream>
+#include <sstream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+// see http://llvm.org/docs/LibFuzzer.html
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    try
+    {
+        // step 1: parse input
+        std::vector<uint8_t> const vec1(data, data + size);
+        json const j1 = json::from_ubjson(vec1);
+
+        try
+        {
+            // step 2.1: round trip without adding size annotations to container types
+            std::vector<uint8_t> const vec2 = json::to_ubjson(j1, false, false);
+
+            // step 2.2: round trip with adding size annotations but without adding type annotations to container types
+            std::vector<uint8_t> const vec3 = json::to_ubjson(j1, true, false);
+
+            // step 2.3: round trip with adding size as well as type annotations to container types
+            std::vector<uint8_t> const vec4 = json::to_ubjson(j1, true, true);
+
+            // parse serialization
+            json const j2 = json::from_ubjson(vec2);
+            json const j3 = json::from_ubjson(vec3);
+            json const j4 = json::from_ubjson(vec4);
+
+            // serializations must match
+            assert(json::to_ubjson(j2, false, false) == vec2);
+            assert(json::to_ubjson(j3, true, false) == vec3);
+            assert(json::to_ubjson(j4, true, true) == vec4);
+        }
+        catch (const json::parse_error&)
+        {
+            // parsing a UBJSON serialization must not fail
+            assert(false);
+        }
+    }
+    catch (const json::parse_error&)
+    {
+        // parse errors are ok, because input may be random bytes
+    }
+    catch (const json::type_error&)
+    {
+        // type errors can occur during parsing, too
+    }
+    catch (const json::out_of_range&)
+    {
+        // out of range errors may happen if provided sizes are excessive
+    }
+
+    // return 0 - non-zero return values are reserved for future use
+    return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/make_test_data_available.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/make_test_data_available.hpp
new file mode 100644
index 00000000..06f49986
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/make_test_data_available.hpp
@@ -0,0 +1,30 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstdio>   // fopen, fclose, FILE
+#include <memory> // unique_ptr
+#include <test_data.hpp>
+#include <doctest.h>
+
+namespace utils
+{
+
+inline bool check_testsuite_downloaded()
+{
+    const std::unique_ptr<std::FILE, decltype(&std::fclose)> file(std::fopen(TEST_DATA_DIRECTORY "/README.md", "r"), &std::fclose);
+    return file != nullptr;
+}
+
+TEST_CASE("check test suite is downloaded")
+{
+    REQUIRE_MESSAGE(utils::check_testsuite_downloaded(), "Test data not found in '" TEST_DATA_DIRECTORY "'. Please execute target 'download_test_data' before running this test suite. See <https://github.com/nlohmann/json#execute-unit-tests> for more information.");
+}
+
+}  // namespace utils
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/test_utils.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/test_utils.hpp
new file mode 100644
index 00000000..25af71c0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/test_utils.hpp
@@ -0,0 +1,33 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <cstdint> // uint8_t
+#include <fstream> // ifstream, istreambuf_iterator, ios
+#include <vector> // vector
+
+namespace utils
+{
+
+inline std::vector<std::uint8_t> read_binary_file(const std::string& filename)
+{
+    std::ifstream file(filename, std::ios::binary);
+    file.unsetf(std::ios::skipws);
+
+    file.seekg(0, std::ios::end);
+    const auto size = file.tellg();
+    file.seekg(0, std::ios::beg);
+
+    std::vector<std::uint8_t> byte_vector;
+    byte_vector.reserve(static_cast<std::size_t>(size));
+    byte_vector.insert(byte_vector.begin(), std::istream_iterator<std::uint8_t>(file), std::istream_iterator<std::uint8_t>());
+    return byte_vector;
+}
+
+} // namespace utils
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-32bit.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-32bit.cpp
new file mode 100644
index 00000000..93a54a97
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-32bit.cpp
@@ -0,0 +1,134 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <climits> // SIZE_MAX
+#include <limits> // numeric_limits
+
+template <typename OfType, typename T, bool MinInRange, bool MaxInRange>
+struct trait_test_arg
+{
+    using of_type = OfType;
+    using type = T;
+    static constexpr bool min_in_range = MinInRange;
+    static constexpr bool max_in_range = MaxInRange;
+};
+
+TEST_CASE_TEMPLATE_DEFINE("value_in_range_of trait", T, value_in_range_of_test) // NOLINT(readability-math-missing-parentheses)
+{
+    using nlohmann::detail::value_in_range_of;
+
+    using of_type = typename T::of_type;
+    using type = typename T::type;
+    constexpr bool min_in_range = T::min_in_range;
+    constexpr bool max_in_range = T::max_in_range;
+
+    type const val_min = std::numeric_limits<type>::min();
+    type const val_min2 = val_min + 1;
+    type const val_max = std::numeric_limits<type>::max();
+    type const val_max2 = val_max - 1;
+
+    REQUIRE(CHAR_BIT == 8);
+
+    std::string of_type_str;
+    if (std::is_unsigned<of_type>::value)
+    {
+        of_type_str += "u";
+    }
+    of_type_str += "int";
+    of_type_str += std::to_string(sizeof(of_type) * 8);
+
+    INFO("of_type := ", of_type_str);
+
+    std::string type_str;
+    if (std::is_unsigned<type>::value)
+    {
+        type_str += "u";
+    }
+    type_str += "int";
+    type_str += std::to_string(sizeof(type) * 8);
+
+    INFO("type := ", type_str);
+
+    CAPTURE(val_min);
+    CAPTURE(min_in_range);
+    CAPTURE(val_max);
+    CAPTURE(max_in_range);
+
+    if (min_in_range)
+    {
+        CHECK(value_in_range_of<of_type>(val_min));
+        CHECK(value_in_range_of<of_type>(val_min2));
+    }
+    else
+    {
+        CHECK_FALSE(value_in_range_of<of_type>(val_min));
+        CHECK_FALSE(value_in_range_of<of_type>(val_min2));
+    }
+
+    if (max_in_range)
+    {
+        CHECK(value_in_range_of<of_type>(val_max));
+        CHECK(value_in_range_of<of_type>(val_max2));
+    }
+    else
+    {
+        CHECK_FALSE(value_in_range_of<of_type>(val_max));
+        CHECK_FALSE(value_in_range_of<of_type>(val_max2));
+    }
+}
+
+TEST_CASE("32bit")
+{
+    REQUIRE(SIZE_MAX == 0xffffffff);
+}
+
+TEST_CASE_TEMPLATE_INVOKE(value_in_range_of_test, \
+                          trait_test_arg<std::size_t, std::int32_t, false, true>, \
+                          trait_test_arg<std::size_t, std::uint32_t, true, true>, \
+                          trait_test_arg<std::size_t, std::int64_t, false, false>, \
+                          trait_test_arg<std::size_t, std::uint64_t, true, false>);
+
+TEST_CASE("BJData")
+{
+    SECTION("parse errors")
+    {
+        SECTION("array")
+        {
+            SECTION("optimized array: negative size")
+            {
+                std::vector<uint8_t> const vM = {'[', '$', 'M', '#', '[', 'I', 0x00, 0x20, 'M', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xFF, ']'};
+                std::vector<uint8_t> const vMX = {'[', '$', 'U', '#', '[', 'M', 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 'U', 0x01, ']'};
+
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK(json::from_bjdata(vM, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vMX), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK(json::from_bjdata(vMX, true, false).is_discarded());
+            }
+
+            SECTION("optimized array: integer value overflow")
+            {
+                std::vector<uint8_t> const vL = {'[', '#', 'L', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F};
+                std::vector<uint8_t> const vM = {'[', '$', 'M', '#', '[', 'I', 0x00, 0x20, 'M', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xFF, ']'};
+
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vL), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK(json::from_bjdata(vL, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK(json::from_bjdata(vM, true, false).is_discarded());
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-algorithms.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-algorithms.cpp
new file mode 100644
index 00000000..871f0409
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-algorithms.cpp
@@ -0,0 +1,365 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <algorithm>
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("algorithms")
+{
+    json j_array = {13, 29, 3, {{"one", 1}, {"two", 2}}, true, false, {1, 2, 3}, "foo", "baz"};
+    json j_object = {{"one", 1}, {"two", 2}};
+
+    SECTION("non-modifying sequence operations")
+    {
+        SECTION("std::all_of")
+        {
+            CHECK(std::all_of(j_array.begin(), j_array.end(), [](const json & value)
+            {
+                return !value.empty();
+            }));
+            CHECK(std::all_of(j_object.begin(), j_object.end(), [](const json & value)
+            {
+                return value.type() == json::value_t::number_integer;
+            }));
+        }
+
+        SECTION("std::any_of")
+        {
+            CHECK(std::any_of(j_array.begin(), j_array.end(), [](const json & value)
+            {
+                return value.is_string() && value.get<std::string>() == "foo";
+            }));
+            CHECK(std::any_of(j_object.begin(), j_object.end(), [](const json & value)
+            {
+                return value.get<int>() > 1;
+            }));
+        }
+
+        SECTION("std::none_of")
+        {
+            CHECK(std::none_of(j_array.begin(), j_array.end(), [](const json & value)
+            {
+                return value.empty();
+            }));
+            CHECK(std::none_of(j_object.begin(), j_object.end(), [](const json & value)
+            {
+                return value.get<int>() <= 0;
+            }));
+        }
+
+        SECTION("std::for_each")
+        {
+            SECTION("reading")
+            {
+                int sum = 0;
+
+                std::for_each(j_array.cbegin(), j_array.cend(), [&sum](const json & value)
+                {
+                    if (value.is_number())
+                    {
+                        sum += static_cast<int>(value);
+                    }
+                });
+
+                CHECK(sum == 45);
+            }
+
+            SECTION("writing")
+            {
+                auto add17 = [](json & value)
+                {
+                    if (value.is_array())
+                    {
+                        value.push_back(17);
+                    }
+                };
+
+                std::for_each(j_array.begin(), j_array.end(), add17);
+
+                CHECK(j_array[6] == json({1, 2, 3, 17}));
+            }
+        }
+
+        SECTION("std::count")
+        {
+            CHECK(std::count(j_array.begin(), j_array.end(), json(true)) == 1);
+        }
+
+        SECTION("std::count_if")
+        {
+            CHECK(std::count_if(j_array.begin(), j_array.end(), [](const json & value)
+            {
+                return (value.is_number());
+            }) == 3);
+            CHECK(std::count_if(j_array.begin(), j_array.end(), [](const json&)
+            {
+                return true;
+            }) == 9);
+        }
+
+        SECTION("std::mismatch")
+        {
+            json j_array2 = {13, 29, 3, {{"one", 1}, {"two", 2}, {"three", 3}}, true, false, {1, 2, 3}, "foo", "baz"};
+            auto res = std::mismatch(j_array.begin(), j_array.end(), j_array2.begin());
+            CHECK(*res.first == json({{"one", 1}, {"two", 2}}));
+            CHECK(*res.second == json({{"one", 1}, {"two", 2}, {"three", 3}}));
+        }
+
+        SECTION("std::equal")
+        {
+            SECTION("using operator==")
+            {
+                CHECK(std::equal(j_array.begin(), j_array.end(), j_array.begin()));
+                CHECK(std::equal(j_object.begin(), j_object.end(), j_object.begin()));
+                CHECK(!std::equal(j_array.begin(), j_array.end(), j_object.begin()));
+            }
+
+            SECTION("using user-defined comparison")
+            {
+                // compare objects only by size of its elements
+                json j_array2 = {13, 29, 3, {"Hello", "World"}, true, false, {{"one", 1}, {"two", 2}, {"three", 3}}, "foo", "baz"};
+                CHECK(!std::equal(j_array.begin(), j_array.end(), j_array2.begin()));
+                CHECK(std::equal(j_array.begin(), j_array.end(), j_array2.begin(),
+                                 [](const json & a, const json & b)
+                {
+                    return (a.size() == b.size());
+                }));
+            }
+        }
+
+        SECTION("std::find")
+        {
+            auto it = std::find(j_array.begin(), j_array.end(), json(false));
+            CHECK(std::distance(j_array.begin(), it) == 5);
+        }
+
+        SECTION("std::find_if")
+        {
+            auto it = std::find_if(j_array.begin(), j_array.end(),
+                                   [](const json & value)
+            {
+                return value.is_boolean();
+            });
+            CHECK(std::distance(j_array.begin(), it) == 4);
+        }
+
+        SECTION("std::find_if_not")
+        {
+            auto it = std::find_if_not(j_array.begin(), j_array.end(),
+                                       [](const json & value)
+            {
+                return value.is_number();
+            });
+            CHECK(std::distance(j_array.begin(), it) == 3);
+        }
+
+        SECTION("std::adjacent_find")
+        {
+            CHECK(std::adjacent_find(j_array.begin(), j_array.end()) == j_array.end());
+            CHECK(std::adjacent_find(j_array.begin(), j_array.end(),
+                                     [](const json & v1, const json & v2)
+            {
+                return v1.type() == v2.type();
+            }) == j_array.begin());
+        }
+    }
+
+    SECTION("modifying sequence operations")
+    {
+        SECTION("std::reverse")
+        {
+            std::reverse(j_array.begin(), j_array.end());
+            CHECK(j_array == json({"baz", "foo", {1, 2, 3}, false, true, {{"one", 1}, {"two", 2}}, 3, 29, 13}));
+        }
+
+        SECTION("std::rotate")
+        {
+            std::rotate(j_array.begin(), j_array.begin() + 1, j_array.end());
+            CHECK(j_array == json({29, 3, {{"one", 1}, {"two", 2}}, true, false, {1, 2, 3}, "foo", "baz", 13}));
+        }
+
+        SECTION("std::partition")
+        {
+            auto it = std::partition(j_array.begin(), j_array.end(), [](const json & v)
+            {
+                return v.is_string();
+            });
+            CHECK(std::distance(j_array.begin(), it) == 2);
+            CHECK(!it[2].is_string());
+        }
+    }
+
+    SECTION("sorting operations")
+    {
+        SECTION("std::sort")
+        {
+            SECTION("with standard comparison")
+            {
+                json j = {13, 29, 3, {{"one", 1}, {"two", 2}}, true, false, {1, 2, 3}, "foo", "baz", nullptr};
+                std::sort(j.begin(), j.end());
+                CHECK(j == json({nullptr, false, true, 3, 13, 29, {{"one", 1}, {"two", 2}}, {1, 2, 3}, "baz", "foo"}));
+            }
+
+            SECTION("with user-defined comparison")
+            {
+                json j = {3, {{"one", 1}, {"two", 2}}, {1, 2, 3}, nullptr};
+                std::sort(j.begin(), j.end(), [](const json & a, const json & b)
+                {
+                    return a.size() < b.size();
+                });
+                CHECK(j == json({nullptr, 3, {{"one", 1}, {"two", 2}}, {1, 2, 3}}));
+            }
+
+            SECTION("sorting an object")
+            {
+                json j({{"one", 1}, {"two", 2}});
+                CHECK_THROWS_WITH_AS(std::sort(j.begin(), j.end()), "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+            }
+        }
+
+        SECTION("std::partial_sort")
+        {
+            json j = {13, 29, 3, {{"one", 1}, {"two", 2}}, true, false, {1, 2, 3}, "foo", "baz", nullptr};
+            std::partial_sort(j.begin(), j.begin() + 4, j.end());
+            CHECK(j == json({nullptr, false, true, 3, {{"one", 1}, {"two", 2}}, 29, {1, 2, 3}, "foo", "baz", 13}));
+        }
+    }
+
+    SECTION("set operations")
+    {
+        SECTION("std::merge")
+        {
+            {
+                json j1 = {2, 4, 6, 8};
+                json j2 = {1, 2, 3, 5, 7};
+                json j3;
+
+                std::merge(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
+                CHECK(j3 == json({1, 2, 2, 3, 4, 5, 6, 7, 8}));
+            }
+        }
+
+        SECTION("std::set_difference")
+        {
+            json j1 = {1, 2, 3, 4, 5, 6, 7, 8};
+            json j2 = {1, 2, 3, 5, 7};
+            json j3;
+
+            std::set_difference(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
+            CHECK(j3 == json({4, 6, 8}));
+        }
+
+        SECTION("std::set_intersection")
+        {
+            json j1 = {1, 2, 3, 4, 5, 6, 7, 8};
+            json j2 = {1, 2, 3, 5, 7};
+            json j3;
+
+            std::set_intersection(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
+            CHECK(j3 == json({1, 2, 3, 5, 7}));
+        }
+
+        SECTION("std::set_union")
+        {
+            json j1 = {2, 4, 6, 8};
+            json j2 = {1, 2, 3, 5, 7};
+            json j3;
+
+            std::set_union(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
+            CHECK(j3 == json({1, 2, 3, 4, 5, 6, 7, 8}));
+        }
+
+        SECTION("std::set_symmetric_difference")
+        {
+            json j1 = {2, 4, 6, 8};
+            json j2 = {1, 2, 3, 5, 7};
+            json j3;
+
+            std::set_symmetric_difference(j1.begin(), j1.end(), j2.begin(), j2.end(), std::back_inserter(j3));
+            CHECK(j3 == json({1, 3, 4, 5, 6, 7, 8}));
+        }
+    }
+
+    SECTION("heap operations")
+    {
+        std::make_heap(j_array.begin(), j_array.end());
+        CHECK(std::is_heap(j_array.begin(), j_array.end()));
+        std::sort_heap(j_array.begin(), j_array.end());
+        CHECK(j_array == json({false, true, 3, 13, 29, {{"one", 1}, {"two", 2}}, {1, 2, 3}, "baz", "foo"}));
+    }
+
+    SECTION("iota")
+    {
+        SECTION("int")
+        {
+            json json_arr = {0, 5, 2, 4, 10, 20, 30, 40, 50, 1};
+            std::iota(json_arr.begin(), json_arr.end(), 0);
+            CHECK(json_arr == json({0, 1, 2, 3, 4, 5, 6, 7, 8, 9}));
+        }
+        SECTION("double")
+        {
+            json json_arr = {0.5, 1.5, 1.3, 4.1, 10.2, 20.5, 30.6, 40.1, 50.22, 1.5};
+            std::iota(json_arr.begin(), json_arr.end(), 0.5);
+            CHECK(json_arr == json({0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5}));
+        }
+
+        SECTION("char")
+        {
+            json json_arr = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '0', '1'};
+            std::iota(json_arr.begin(), json_arr.end(), '0');
+            CHECK(json_arr == json({'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}));
+        }
+    }
+
+    SECTION("copy")
+    {
+        SECTION("copy without if")
+        {
+            json dest_arr;
+            const json source_arr = {1, 2, 3, 4};
+
+            std::copy(source_arr.begin(), source_arr.end(), std::back_inserter(dest_arr));
+
+            CHECK(dest_arr == source_arr);
+        }
+        SECTION("copy if")
+        {
+            json dest_arr;
+            const json source_arr = {0, 3, 6, 9, 12, 15, 20};
+
+            std::copy_if(source_arr.begin(), source_arr.end(), std::back_inserter(dest_arr), [](const json & _value)
+            {
+                return _value.get<int>() % 3 == 0;
+            });
+            CHECK(dest_arr == json({0, 3, 6, 9, 12, 15}));
+        }
+        SECTION("copy n")
+        {
+            const json source_arr = {0, 1, 2, 3, 4, 5, 6, 7};
+            json dest_arr;
+            const unsigned char numToCopy = 2;
+
+            std::copy_n(source_arr.begin(), numToCopy, std::back_inserter(dest_arr));
+            CHECK(dest_arr == json{0, 1});
+
+        }
+        SECTION("copy n chars")
+        {
+            const json source_arr = {'1', '2', '3', '4', '5', '6', '7'};
+            json dest_arr;
+            const unsigned char numToCopy = 4;
+
+            std::copy_n(source_arr.begin(), numToCopy, std::back_inserter(dest_arr));
+            CHECK(dest_arr == json{'1', '2', '3', '4'});
+        }
+    }
+
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-allocator.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-allocator.cpp
new file mode 100644
index 00000000..cf401a02
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-allocator.cpp
@@ -0,0 +1,263 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+namespace
+{
+// special test case to check if memory is leaked if constructor throws
+template<class T>
+struct bad_allocator : std::allocator<T>
+{
+    using std::allocator<T>::allocator;
+
+    bad_allocator() = default;
+    template<class U> bad_allocator(const bad_allocator<U>& /*unused*/) { }
+
+    template<class... Args>
+    void construct(T* /*unused*/, Args&& ... /*unused*/) // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        throw std::bad_alloc();
+    }
+
+    template <class U>
+    struct rebind
+    {
+        using other = bad_allocator<U>;
+    };
+};
+} // namespace
+
+TEST_CASE("bad_alloc")
+{
+    SECTION("bad_alloc")
+    {
+        // create JSON type using the throwing allocator
+        using bad_json = nlohmann::basic_json<std::map,
+              std::vector,
+              std::string,
+              bool,
+              std::int64_t,
+              std::uint64_t,
+              double,
+              bad_allocator>;
+
+        // creating an object should throw
+        CHECK_THROWS_AS(bad_json(bad_json::value_t::object), std::bad_alloc&);
+    }
+}
+
+namespace
+{
+bool next_construct_fails = false;
+bool next_destroy_fails = false;
+bool next_deallocate_fails = false;
+
+template<class T>
+struct my_allocator : std::allocator<T>
+{
+    using std::allocator<T>::allocator;
+
+    template<class... Args>
+    void construct(T* p, Args&& ... args)
+    {
+        if (next_construct_fails)
+        {
+            next_construct_fails = false;
+            throw std::bad_alloc();
+        }
+
+        ::new (reinterpret_cast<void*>(p)) T(std::forward<Args>(args)...);
+    }
+
+    void deallocate(T* p, std::size_t n)
+    {
+        if (next_deallocate_fails)
+        {
+            next_deallocate_fails = false;
+            throw std::bad_alloc();
+        }
+
+        std::allocator<T>::deallocate(p, n);
+    }
+
+    void destroy(T* p)
+    {
+        if (next_destroy_fails)
+        {
+            next_destroy_fails = false;
+            throw std::bad_alloc();
+        }
+
+        static_cast<void>(p); // fix MSVC's C4100 warning
+        p->~T();
+    }
+
+    template <class U>
+    struct rebind
+    {
+        using other = my_allocator<U>;
+    };
+};
+
+// allows deletion of raw pointer, usually hold by json_value
+template<class T>
+void my_allocator_clean_up(T* p)
+{
+    assert(p != nullptr);
+    my_allocator<T> alloc;
+    alloc.destroy(p);
+    alloc.deallocate(p, 1);
+}
+} // namespace
+
+TEST_CASE("controlled bad_alloc")
+{
+    // create JSON type using the throwing allocator
+    using my_json = nlohmann::basic_json<std::map,
+          std::vector,
+          std::string,
+          bool,
+          std::int64_t,
+          std::uint64_t,
+          double,
+          my_allocator>;
+
+    SECTION("class json_value")
+    {
+        SECTION("json_value(value_t)")
+        {
+            SECTION("object")
+            {
+                next_construct_fails = false;
+                auto t = my_json::value_t::object;
+                CHECK_NOTHROW(my_allocator_clean_up(my_json::json_value(t).object));
+                next_construct_fails = true;
+                CHECK_THROWS_AS(my_json::json_value(t), std::bad_alloc&);
+                next_construct_fails = false;
+            }
+            SECTION("array")
+            {
+                next_construct_fails = false;
+                auto t = my_json::value_t::array;
+                CHECK_NOTHROW(my_allocator_clean_up(my_json::json_value(t).array));
+                next_construct_fails = true;
+                CHECK_THROWS_AS(my_json::json_value(t), std::bad_alloc&);
+                next_construct_fails = false;
+            }
+            SECTION("string")
+            {
+                next_construct_fails = false;
+                auto t = my_json::value_t::string;
+                CHECK_NOTHROW(my_allocator_clean_up(my_json::json_value(t).string));
+                next_construct_fails = true;
+                CHECK_THROWS_AS(my_json::json_value(t), std::bad_alloc&);
+                next_construct_fails = false;
+            }
+        }
+
+        SECTION("json_value(const string_t&)")
+        {
+            next_construct_fails = false;
+            const my_json::string_t v("foo");
+            CHECK_NOTHROW(my_allocator_clean_up(my_json::json_value(v).string));
+            next_construct_fails = true;
+            CHECK_THROWS_AS(my_json::json_value(v), std::bad_alloc&);
+            next_construct_fails = false;
+        }
+    }
+
+    SECTION("class basic_json")
+    {
+        SECTION("basic_json(const CompatibleObjectType&)")
+        {
+            next_construct_fails = false;
+            const std::map<std::string, std::string> v {{"foo", "bar"}};
+            CHECK_NOTHROW(my_json(v));
+            next_construct_fails = true;
+            CHECK_THROWS_AS(my_json(v), std::bad_alloc&);
+            next_construct_fails = false;
+        }
+
+        SECTION("basic_json(const CompatibleArrayType&)")
+        {
+            next_construct_fails = false;
+            const std::vector<std::string> v {"foo", "bar", "baz"};
+            CHECK_NOTHROW(my_json(v));
+            next_construct_fails = true;
+            CHECK_THROWS_AS(my_json(v), std::bad_alloc&);
+            next_construct_fails = false;
+        }
+
+        SECTION("basic_json(const typename string_t::value_type*)")
+        {
+            next_construct_fails = false;
+            CHECK_NOTHROW(my_json("foo"));
+            next_construct_fails = true;
+            CHECK_THROWS_AS(my_json("foo"), std::bad_alloc&);
+            next_construct_fails = false;
+        }
+
+        SECTION("basic_json(const typename string_t::value_type*)")
+        {
+            next_construct_fails = false;
+            const std::string s("foo");
+            CHECK_NOTHROW(my_json(s));
+            next_construct_fails = true;
+            CHECK_THROWS_AS(my_json(s), std::bad_alloc&);
+            next_construct_fails = false;
+        }
+    }
+}
+
+namespace
+{
+template<class T>
+struct allocator_no_forward : std::allocator<T>
+{
+    allocator_no_forward() = default;
+    template <class U>
+    allocator_no_forward(allocator_no_forward<U> /*unused*/) {}
+
+    template <class U>
+    struct rebind
+    {
+        using other =  allocator_no_forward<U>;
+    };
+
+    template <class... Args>
+    void construct(T* p, const Args& ... args) noexcept(noexcept(::new (static_cast<void*>(p)) T(args...)))
+    {
+        // force copy even if move is available
+        ::new (static_cast<void*>(p)) T(args...);
+    }
+};
+} // namespace
+
+TEST_CASE("bad my_allocator::construct")
+{
+    SECTION("my_allocator::construct doesn't forward")
+    {
+        using bad_alloc_json = nlohmann::basic_json<std::map,
+              std::vector,
+              std::string,
+              bool,
+              std::int64_t,
+              std::uint64_t,
+              double,
+              allocator_no_forward>;
+
+        bad_alloc_json j;
+        j["test"] = bad_alloc_json::array_t();
+        j["test"].push_back("should not leak");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-alt-string.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-alt-string.cpp
new file mode 100644
index 00000000..29999597
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-alt-string.cpp
@@ -0,0 +1,362 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2018 Vitaliy Manushkin <agri@akamo.info>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+
+#include <string>
+#include <utility>
+
+/* forward declarations */
+class alt_string;
+bool operator<(const char* op1, const alt_string& op2) noexcept; // NOLINT(misc-use-internal-linkage)
+void int_to_string(alt_string& target, std::size_t value); // NOLINT(misc-use-internal-linkage)
+
+/*
+ * This is virtually a string class.
+ * It covers std::string under the hood.
+ */
+class alt_string
+{
+  public:
+    using value_type = std::string::value_type;
+
+    static constexpr auto npos = static_cast<std::size_t>(-1);
+
+    alt_string(const char* str): str_impl(str) {}
+    alt_string(const char* str, std::size_t count): str_impl(str, count) {}
+    alt_string(size_t count, char chr): str_impl(count, chr) {}
+    alt_string() = default;
+
+    alt_string& append(char ch)
+    {
+        str_impl.push_back(ch);
+        return *this;
+    }
+
+    alt_string& append(const alt_string& str)
+    {
+        str_impl.append(str.str_impl);
+        return *this;
+    }
+
+    alt_string& append(const char* s, std::size_t length)
+    {
+        str_impl.append(s, length);
+        return *this;
+    }
+
+    void push_back(char c)
+    {
+        str_impl.push_back(c);
+    }
+
+    template <typename op_type>
+    bool operator==(const op_type& op) const
+    {
+        return str_impl == op;
+    }
+
+    bool operator==(const alt_string& op) const
+    {
+        return str_impl == op.str_impl;
+    }
+
+    template <typename op_type>
+    bool operator!=(const op_type& op) const
+    {
+        return str_impl != op;
+    }
+
+    bool operator!=(const alt_string& op) const
+    {
+        return str_impl != op.str_impl;
+    }
+
+    std::size_t size() const noexcept
+    {
+        return str_impl.size();
+    }
+
+    void resize (std::size_t n)
+    {
+        str_impl.resize(n);
+    }
+
+    void resize (std::size_t n, char c)
+    {
+        str_impl.resize(n, c);
+    }
+
+    template <typename op_type>
+    bool operator<(const op_type& op) const noexcept
+    {
+        return str_impl < op;
+    }
+
+    bool operator<(const alt_string& op) const noexcept
+    {
+        return str_impl < op.str_impl;
+    }
+
+    const char* c_str() const
+    {
+        return str_impl.c_str();
+    }
+
+    char& operator[](std::size_t index)
+    {
+        return str_impl[index];
+    }
+
+    const char& operator[](std::size_t index) const
+    {
+        return str_impl[index];
+    }
+
+    char& back()
+    {
+        return str_impl.back();
+    }
+
+    const char& back() const
+    {
+        return str_impl.back();
+    }
+
+    void clear()
+    {
+        str_impl.clear();
+    }
+
+    const value_type* data() const
+    {
+        return str_impl.data();
+    }
+
+    bool empty() const
+    {
+        return str_impl.empty();
+    }
+
+    std::size_t find(const alt_string& str, std::size_t pos = 0) const
+    {
+        return str_impl.find(str.str_impl, pos);
+    }
+
+    std::size_t find_first_of(char c, std::size_t pos = 0) const
+    {
+        return str_impl.find_first_of(c, pos);
+    }
+
+    alt_string substr(std::size_t pos = 0, std::size_t count = npos) const
+    {
+        const std::string s = str_impl.substr(pos, count);
+        return {s.data(), s.size()};
+    }
+
+    alt_string& replace(std::size_t pos, std::size_t count, const alt_string& str)
+    {
+        str_impl.replace(pos, count, str.str_impl);
+        return *this;
+    }
+
+    void reserve( std::size_t new_cap = 0 )
+    {
+        str_impl.reserve(new_cap);
+    }
+
+  private:
+    std::string str_impl {}; // NOLINT(readability-redundant-member-init)
+
+    friend bool operator<(const char* /*op1*/, const alt_string& /*op2*/) noexcept;
+};
+
+void int_to_string(alt_string& target, std::size_t value)
+{
+    target = std::to_string(value).c_str();
+}
+
+using alt_json = nlohmann::basic_json <
+                 std::map,
+                 std::vector,
+                 alt_string,
+                 bool,
+                 std::int64_t,
+                 std::uint64_t,
+                 double,
+                 std::allocator,
+                 nlohmann::adl_serializer >;
+
+bool operator<(const char* op1, const alt_string& op2) noexcept
+{
+    return op1 < op2.str_impl;
+}
+
+TEST_CASE("alternative string type")
+{
+    SECTION("dump")
+    {
+        {
+            alt_json doc;
+            doc["pi"] = 3.141;
+            alt_string dump = doc.dump();
+            CHECK(dump == R"({"pi":3.141})");
+        }
+
+        {
+            alt_json doc;
+            doc["happy"] = true;
+            alt_string dump = doc.dump();
+            CHECK(dump == R"({"happy":true})");
+        }
+
+        {
+            alt_json doc;
+            doc["name"] = "I'm Batman";
+            alt_string dump = doc.dump();
+            CHECK(dump == R"({"name":"I'm Batman"})");
+        }
+
+        {
+            alt_json doc;
+            doc["nothing"] = nullptr;
+            alt_string dump = doc.dump();
+            CHECK(dump == R"({"nothing":null})");
+        }
+
+        {
+            alt_json doc;
+            doc["answer"]["everything"] = 42;
+            alt_string dump = doc.dump();
+            CHECK(dump == R"({"answer":{"everything":42}})");
+        }
+
+        {
+            alt_json doc;
+            doc["list"] = { 1, 0, 2 };
+            alt_string dump = doc.dump();
+            CHECK(dump == R"({"list":[1,0,2]})");
+        }
+
+        {
+            alt_json doc;
+            doc["object"] = { {"currency", "USD"}, {"value", 42.99} };
+            alt_string dump = doc.dump();
+            CHECK(dump == R"({"object":{"currency":"USD","value":42.99}})");
+        }
+    }
+
+    SECTION("parse")
+    {
+        auto doc = alt_json::parse(R"({"foo": "bar"})");
+        alt_string dump = doc.dump();
+        CHECK(dump == R"({"foo":"bar"})");
+    }
+
+    SECTION("items")
+    {
+        auto doc = alt_json::parse(R"({"foo": "bar"})");
+
+        for (const auto& item : doc.items())
+        {
+            CHECK(item.key() == "foo");
+            CHECK(item.value() == "bar");
+        }
+
+        auto doc_array = alt_json::parse(R"(["foo", "bar"])");
+
+        for (const auto& item : doc_array.items())
+        {
+            if (item.key() == "0" )
+            {
+                CHECK( item.value() == "foo" );
+            }
+            else if (item.key() == "1" )
+            {
+                CHECK(item.value() == "bar");
+            }
+            else
+            {
+                CHECK(false);
+            }
+        }
+    }
+
+    SECTION("equality")
+    {
+        alt_json doc;
+        doc["Who are you?"] = "I'm Batman";
+
+        CHECK("I'm Batman" == doc["Who are you?"]);
+        CHECK(doc["Who are you?"]  == "I'm Batman");
+        CHECK_FALSE("I'm Batman" != doc["Who are you?"]);
+        CHECK_FALSE(doc["Who are you?"]  != "I'm Batman");
+
+        CHECK("I'm Bruce Wayne" != doc["Who are you?"]);
+        CHECK(doc["Who are you?"]  != "I'm Bruce Wayne");
+        CHECK_FALSE("I'm Bruce Wayne" == doc["Who are you?"]);
+        CHECK_FALSE(doc["Who are you?"]  == "I'm Bruce Wayne");
+
+        {
+            const alt_json& const_doc = doc;
+
+            CHECK("I'm Batman" == const_doc["Who are you?"]);
+            CHECK(const_doc["Who are you?"] == "I'm Batman");
+            CHECK_FALSE("I'm Batman" != const_doc["Who are you?"]);
+            CHECK_FALSE(const_doc["Who are you?"] != "I'm Batman");
+
+            CHECK("I'm Bruce Wayne" != const_doc["Who are you?"]);
+            CHECK(const_doc["Who are you?"] != "I'm Bruce Wayne");
+            CHECK_FALSE("I'm Bruce Wayne" == const_doc["Who are you?"]);
+            CHECK_FALSE(const_doc["Who are you?"] == "I'm Bruce Wayne");
+        }
+    }
+
+    SECTION("JSON pointer")
+    {
+        // conversion from json to alt_json fails to compile (see #3425);
+        // attempted fix(*) produces: [[['b','a','r'],['b','a','z']]] (with each char being an integer)
+        // (*) disable implicit conversion for json_refs of any basic_json type
+        // alt_json j = R"(
+        // {
+        //     "foo": ["bar", "baz"]
+        // }
+        // )"_json;
+        auto j = alt_json::parse(R"({"foo": ["bar", "baz"]})");
+
+        CHECK(j.at(alt_json::json_pointer("/foo/0")) == j["foo"][0]);
+        CHECK(j.at(alt_json::json_pointer("/foo/1")) == j["foo"][1]);
+    }
+
+    SECTION("patch")
+    {
+        alt_json const patch1 = alt_json::parse(R"([{ "op": "add", "path": "/a/b", "value": [ "foo", "bar" ] }])");
+        alt_json const doc1 = alt_json::parse(R"({ "a": { "foo": 1 } })");
+
+        CHECK_NOTHROW(doc1.patch(patch1));
+        alt_json doc1_ans = alt_json::parse(R"(
+                {
+                    "a": {
+                        "foo": 1,
+                        "b": [ "foo", "bar" ]
+                    }
+                }
+            )");
+        CHECK(doc1.patch(patch1) == doc1_ans);
+    }
+
+    SECTION("diff")
+    {
+        alt_json const j1 = {"foo", "bar", "baz"};
+        alt_json const j2 = {"foo", "bam"};
+        CHECK(alt_json::diff(j1, j2).dump() == "[{\"op\":\"replace\",\"path\":\"/1\",\"value\":\"bam\"},{\"op\":\"remove\",\"path\":\"/2\"}]");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-assert_macro.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-assert_macro.cpp
new file mode 100644
index 00000000..ce336285
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-assert_macro.cpp
@@ -0,0 +1,48 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// avoid warning when assert does not abort
+DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+DOCTEST_GCC_SUPPRESS_WARNING("-Wstrict-overflow")
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wstrict-overflow")
+
+/// global variable to record side effect of assert calls
+static int assert_counter;
+
+/// set failure variable to true instead of calling assert(x)
+#define JSON_ASSERT(x) {if (!(x)) ++assert_counter; }
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+// the test assumes exceptions to work
+#if !defined(JSON_NOEXCEPTION)
+TEST_CASE("JSON_ASSERT(x)")
+{
+    SECTION("basic_json(first, second)")
+    {
+        assert_counter = 0;
+        CHECK(assert_counter == 0);
+
+        const json::iterator it{};
+        json j;
+
+        // in case assertions do not abort execution, an exception is thrown
+        CHECK_THROWS_WITH_AS(json(it, j.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator);
+
+        // check that assertion actually happened
+        CHECK(assert_counter == 1);
+    }
+}
+#endif
+
+DOCTEST_GCC_SUPPRESS_WARNING_POP
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-binary_formats.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-binary_formats.cpp
new file mode 100644
index 00000000..b8ca315d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-binary_formats.cpp
@@ -0,0 +1,211 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include "make_test_data_available.hpp"
+
+TEST_CASE("Binary Formats" * doctest::skip())
+{
+    SECTION("canada.json")
+    {
+        const auto* filename = TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json";
+        const json j = json::parse(std::ifstream(filename));
+
+        const auto json_size = j.dump().size();
+        const auto bjdata_1_size = json::to_bjdata(j).size();
+        const auto bjdata_2_size = json::to_bjdata(j, true).size();
+        const auto bjdata_3_size = json::to_bjdata(j, true, true).size();
+        const auto bson_size = json::to_bson(j).size();
+        const auto cbor_size = json::to_cbor(j).size();
+        const auto msgpack_size = json::to_msgpack(j).size();
+        const auto ubjson_1_size = json::to_ubjson(j).size();
+        const auto ubjson_2_size = json::to_ubjson(j, true).size();
+        const auto ubjson_3_size = json::to_ubjson(j, true, true).size();
+
+        CHECK(json_size == 2090303);
+        CHECK(bjdata_1_size == 1112030);
+        CHECK(bjdata_2_size == 1224148);
+        CHECK(bjdata_3_size == 1224148);
+        CHECK(bson_size == 1794522);
+        CHECK(cbor_size == 1055552);
+        CHECK(msgpack_size == 1056145);
+        CHECK(ubjson_1_size == 1112030);
+        CHECK(ubjson_2_size == 1224148);
+        CHECK(ubjson_3_size == 1169069);
+
+        CHECK((100.0 * double(json_size) / double(json_size)) == Approx(100.0));
+        CHECK((100.0 * double(bjdata_1_size) / double(json_size)) == Approx(53.199));
+        CHECK((100.0 * double(bjdata_2_size) / double(json_size)) == Approx(58.563));
+        CHECK((100.0 * double(bjdata_3_size) / double(json_size)) == Approx(58.563));
+        CHECK((100.0 * double(bson_size) / double(json_size)) == Approx(85.849));
+        CHECK((100.0 * double(cbor_size) / double(json_size)) == Approx(50.497));
+        CHECK((100.0 * double(msgpack_size) / double(json_size)) == Approx(50.526));
+        CHECK((100.0 * double(ubjson_1_size) / double(json_size)) == Approx(53.199));
+        CHECK((100.0 * double(ubjson_2_size) / double(json_size)) == Approx(58.563));
+        CHECK((100.0 * double(ubjson_3_size) / double(json_size)) == Approx(55.928));
+    }
+
+    SECTION("twitter.json")
+    {
+        const auto* filename = TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json";
+        const json j = json::parse(std::ifstream(filename));
+
+        const auto json_size = j.dump().size();
+        const auto bjdata_1_size = json::to_bjdata(j).size();
+        const auto bjdata_2_size = json::to_bjdata(j, true).size();
+        const auto bjdata_3_size = json::to_bjdata(j, true, true).size();
+        const auto bson_size = json::to_bson(j).size();
+        const auto cbor_size = json::to_cbor(j).size();
+        const auto msgpack_size = json::to_msgpack(j).size();
+        const auto ubjson_1_size = json::to_ubjson(j).size();
+        const auto ubjson_2_size = json::to_ubjson(j, true).size();
+        const auto ubjson_3_size = json::to_ubjson(j, true, true).size();
+
+        CHECK(json_size == 466906);
+        CHECK(bjdata_1_size == 425342);
+        CHECK(bjdata_2_size == 429970);
+        CHECK(bjdata_3_size == 429970);
+        CHECK(bson_size == 444568);
+        CHECK(cbor_size == 402814);
+        CHECK(msgpack_size == 401510);
+        CHECK(ubjson_1_size == 426160);
+        CHECK(ubjson_2_size == 430788);
+        CHECK(ubjson_3_size == 430798);
+
+        CHECK((100.0 * double(json_size) / double(json_size)) == Approx(100.0));
+        CHECK((100.0 * double(bjdata_1_size) / double(json_size)) == Approx(91.097));
+        CHECK((100.0 * double(bjdata_2_size) / double(json_size)) == Approx(92.089));
+        CHECK((100.0 * double(bjdata_3_size) / double(json_size)) == Approx(92.089));
+        CHECK((100.0 * double(bson_size) / double(json_size)) == Approx(95.215));
+        CHECK((100.0 * double(cbor_size) / double(json_size)) == Approx(86.273));
+        CHECK((100.0 * double(msgpack_size) / double(json_size)) == Approx(85.993));
+        CHECK((100.0 * double(ubjson_1_size) / double(json_size)) == Approx(91.273));
+        CHECK((100.0 * double(ubjson_2_size) / double(json_size)) == Approx(92.264));
+        CHECK((100.0 * double(ubjson_3_size) / double(json_size)) == Approx(92.266));
+    }
+
+    SECTION("citm_catalog.json")
+    {
+        const auto* filename = TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json";
+        const json j = json::parse(std::ifstream(filename));
+
+        const auto json_size = j.dump().size();
+        const auto bjdata_1_size = json::to_bjdata(j).size();
+        const auto bjdata_2_size = json::to_bjdata(j, true).size();
+        const auto bjdata_3_size = json::to_bjdata(j, true, true).size();
+        const auto bson_size = json::to_bson(j).size();
+        const auto cbor_size = json::to_cbor(j).size();
+        const auto msgpack_size = json::to_msgpack(j).size();
+        const auto ubjson_1_size = json::to_ubjson(j).size();
+        const auto ubjson_2_size = json::to_ubjson(j, true).size();
+        const auto ubjson_3_size = json::to_ubjson(j, true, true).size();
+
+        CHECK(json_size == 500299);
+        CHECK(bjdata_1_size == 390781);
+        CHECK(bjdata_2_size == 433557);
+        CHECK(bjdata_3_size == 432964);
+        CHECK(bson_size == 479430);
+        CHECK(cbor_size == 342373);
+        CHECK(msgpack_size == 342473);
+        CHECK(ubjson_1_size == 391463);
+        CHECK(ubjson_2_size == 434239);
+        CHECK(ubjson_3_size == 425073);
+
+        CHECK((100.0 * double(json_size) / double(json_size)) == Approx(100.0));
+        CHECK((100.0 * double(bjdata_1_size) / double(json_size)) == Approx(78.109));
+        CHECK((100.0 * double(bjdata_2_size) / double(json_size)) == Approx(86.659));
+        CHECK((100.0 * double(bjdata_3_size) / double(json_size)) == Approx(86.541));
+        CHECK((100.0 * double(bson_size) / double(json_size)) == Approx(95.828));
+        CHECK((100.0 * double(cbor_size) / double(json_size)) == Approx(68.433));
+        CHECK((100.0 * double(msgpack_size) / double(json_size)) == Approx(68.453));
+        CHECK((100.0 * double(ubjson_1_size) / double(json_size)) == Approx(78.245));
+        CHECK((100.0 * double(ubjson_2_size) / double(json_size)) == Approx(86.795));
+        CHECK((100.0 * double(ubjson_3_size) / double(json_size)) == Approx(84.963));
+    }
+
+    SECTION("jeopardy.json")
+    {
+        const auto* filename = TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json";
+        json j = json::parse(std::ifstream(filename));
+
+        const auto json_size = j.dump().size();
+        const auto bjdata_1_size = json::to_bjdata(j).size();
+        const auto bjdata_2_size = json::to_bjdata(j, true).size();
+        const auto bjdata_3_size = json::to_bjdata(j, true, true).size();
+        const auto bson_size = json::to_bson({{"", j}}).size(); // wrap array in object for BSON
+        const auto cbor_size = json::to_cbor(j).size();
+        const auto msgpack_size = json::to_msgpack(j).size();
+        const auto ubjson_1_size = json::to_ubjson(j).size();
+        const auto ubjson_2_size = json::to_ubjson(j, true).size();
+        const auto ubjson_3_size = json::to_ubjson(j, true, true).size();
+
+        CHECK(json_size == 52508728);
+        CHECK(bjdata_1_size == 50710965);
+        CHECK(bjdata_2_size == 51144830);
+        CHECK(bjdata_3_size == 51144830);
+        CHECK(bson_size == 56008520);
+        CHECK(cbor_size == 46187320);
+        CHECK(msgpack_size == 46158575);
+        CHECK(ubjson_1_size == 50710965);
+        CHECK(ubjson_2_size == 51144830);
+        CHECK(ubjson_3_size == 49861422);
+
+        CHECK((100.0 * double(json_size) / double(json_size)) == Approx(100.0));
+        CHECK((100.0 * double(bjdata_1_size) / double(json_size)) == Approx(96.576));
+        CHECK((100.0 * double(bjdata_2_size) / double(json_size)) == Approx(97.402));
+        CHECK((100.0 * double(bjdata_3_size) / double(json_size)) == Approx(97.402));
+        CHECK((100.0 * double(bson_size) / double(json_size)) == Approx(106.665));
+        CHECK((100.0 * double(cbor_size) / double(json_size)) == Approx(87.961));
+        CHECK((100.0 * double(msgpack_size) / double(json_size)) == Approx(87.906));
+        CHECK((100.0 * double(ubjson_1_size) / double(json_size)) == Approx(96.576));
+        CHECK((100.0 * double(ubjson_2_size) / double(json_size)) == Approx(97.402));
+        CHECK((100.0 * double(ubjson_3_size) / double(json_size)) == Approx(94.958));
+    }
+
+    SECTION("sample.json")
+    {
+        const auto* filename = TEST_DATA_DIRECTORY "/json_testsuite/sample.json";
+        const json j = json::parse(std::ifstream(filename));
+
+        const auto json_size = j.dump().size();
+        const auto bjdata_1_size = json::to_bjdata(j).size();
+        const auto bjdata_2_size = json::to_bjdata(j, true).size();
+        const auto bjdata_3_size = json::to_bjdata(j, true, true).size();
+        // BSON cannot process the file as it contains code point  U+0000
+        const auto cbor_size = json::to_cbor(j).size();
+        const auto msgpack_size = json::to_msgpack(j).size();
+        const auto ubjson_1_size = json::to_ubjson(j).size();
+        const auto ubjson_2_size = json::to_ubjson(j, true).size();
+        const auto ubjson_3_size = json::to_ubjson(j, true, true).size();
+
+        CHECK(json_size == 168677);
+        CHECK(bjdata_1_size == 148695);
+        CHECK(bjdata_2_size == 150569);
+        CHECK(bjdata_3_size == 150569);
+        CHECK(cbor_size == 147095);
+        CHECK(msgpack_size == 147017);
+        CHECK(ubjson_1_size == 148695);
+        CHECK(ubjson_2_size == 150569);
+        CHECK(ubjson_3_size == 150883);
+
+        CHECK((100.0 * double(json_size) / double(json_size)) == Approx(100.0));
+        CHECK((100.0 * double(bjdata_1_size) / double(json_size)) == Approx(88.153));
+        CHECK((100.0 * double(bjdata_2_size) / double(json_size)) == Approx(89.264));
+        CHECK((100.0 * double(bjdata_3_size) / double(json_size)) == Approx(89.264));
+        CHECK((100.0 * double(cbor_size) / double(json_size)) == Approx(87.205));
+        CHECK((100.0 * double(msgpack_size) / double(json_size)) == Approx(87.158));
+        CHECK((100.0 * double(ubjson_1_size) / double(json_size)) == Approx(88.153));
+        CHECK((100.0 * double(ubjson_2_size) / double(json_size)) == Approx(89.264));
+        CHECK((100.0 * double(ubjson_3_size) / double(json_size)) == Approx(89.450));
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-bjdata.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-bjdata.cpp
new file mode 100644
index 00000000..c47d64e1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-bjdata.cpp
@@ -0,0 +1,3581 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <algorithm>
+#include <climits>
+#include <limits>
+#include <iostream>
+#include <fstream>
+#include <set>
+#include "make_test_data_available.hpp"
+#include "test_utils.hpp"
+
+namespace
+{
+class SaxCountdown
+{
+  public:
+    explicit SaxCountdown(const int count) : events_left(count)
+    {}
+
+    bool null()
+    {
+        return events_left-- > 0;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_integer(json::number_integer_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_unsigned(json::number_unsigned_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_float(json::number_float_t /*unused*/, const std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool string(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool binary(std::vector<std::uint8_t>& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_object(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool key(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_object()
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_array(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_array()
+    {
+        return events_left-- > 0;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const json::exception& /*unused*/) // NOLINT(readability-convert-member-functions-to-static)
+    {
+        return false;
+    }
+
+  private:
+    int events_left = 0;
+};
+} // namespace
+
+// at some point in the future, a unit test dedicated to type traits might be a good idea
+template <typename OfType, typename T, bool MinInRange, bool MaxInRange>
+struct trait_test_arg
+{
+    using of_type = OfType;
+    using type = T;
+    static constexpr bool min_in_range = MinInRange;
+    static constexpr bool max_in_range = MaxInRange;
+};
+
+TEST_CASE_TEMPLATE_DEFINE("value_in_range_of trait", T, value_in_range_of_test) // NOLINT(readability-math-missing-parentheses)
+{
+    using nlohmann::detail::value_in_range_of;
+
+    using of_type = typename T::of_type;
+    using type = typename T::type;
+    constexpr bool min_in_range = T::min_in_range;
+    constexpr bool max_in_range = T::max_in_range;
+
+    type const val_min = std::numeric_limits<type>::min();
+    type const val_min2 = val_min + 1;
+    type const val_max = std::numeric_limits<type>::max();
+    type const val_max2 = val_max - 1;
+
+    REQUIRE(CHAR_BIT == 8);
+
+    std::string of_type_str;
+    if (std::is_unsigned<of_type>::value)
+    {
+        of_type_str += "u";
+    }
+    of_type_str += "int";
+    of_type_str += std::to_string(sizeof(of_type) * 8);
+
+    INFO("of_type := ", of_type_str);
+
+    std::string type_str;
+    if (std::is_unsigned<type>::value)
+    {
+        type_str += "u";
+    }
+    type_str += "int";
+    type_str += std::to_string(sizeof(type) * 8);
+
+    INFO("type := ", type_str);
+
+    CAPTURE(val_min);
+    CAPTURE(min_in_range);
+    CAPTURE(val_max);
+    CAPTURE(max_in_range);
+
+    if (min_in_range)
+    {
+        CHECK(value_in_range_of<of_type>(val_min));
+        CHECK(value_in_range_of<of_type>(val_min2));
+    }
+    else
+    {
+        CHECK_FALSE(value_in_range_of<of_type>(val_min));
+        CHECK_FALSE(value_in_range_of<of_type>(val_min2));
+    }
+
+    if (max_in_range)
+    {
+        CHECK(value_in_range_of<of_type>(val_max));
+        CHECK(value_in_range_of<of_type>(val_max2));
+    }
+    else
+    {
+        CHECK_FALSE(value_in_range_of<of_type>(val_max));
+        CHECK_FALSE(value_in_range_of<of_type>(val_max2));
+    }
+}
+
+TEST_CASE_TEMPLATE_INVOKE(value_in_range_of_test, \
+                          trait_test_arg<std::int32_t, std::int32_t, true, true>, \
+                          trait_test_arg<std::int32_t, std::uint32_t, true, false>, \
+                          trait_test_arg<std::uint32_t, std::int32_t, false, true>, \
+                          trait_test_arg<std::uint32_t, std::uint32_t, true, true>, \
+                          trait_test_arg<std::int32_t, std::int64_t, false, false>, \
+                          trait_test_arg<std::int32_t, std::uint64_t, true, false>, \
+                          trait_test_arg<std::uint32_t, std::int64_t, false, false>, \
+                          trait_test_arg<std::uint32_t, std::uint64_t, true, false>, \
+                          trait_test_arg<std::int64_t, std::int32_t, true, true>, \
+                          trait_test_arg<std::int64_t, std::uint32_t, true, true>, \
+                          trait_test_arg<std::uint64_t, std::int32_t, false, true>, \
+                          trait_test_arg<std::uint64_t, std::uint32_t, true, true>, \
+                          trait_test_arg<std::int64_t, std::int64_t, true, true>, \
+                          trait_test_arg<std::int64_t, std::uint64_t, true, false>, \
+                          trait_test_arg<std::uint64_t, std::int64_t, false, true>, \
+                          trait_test_arg<std::uint64_t, std::uint64_t, true, true>);
+
+#if SIZE_MAX == 0xffffffff
+TEST_CASE_TEMPLATE_INVOKE(value_in_range_of_test, \
+                          trait_test_arg<std::size_t, std::int32_t, false, true>, \
+                          trait_test_arg<std::size_t, std::uint32_t, true, true>, \
+                          trait_test_arg<std::size_t, std::int64_t, false, false>, \
+                          trait_test_arg<std::size_t, std::uint64_t, true, false>);
+#else
+TEST_CASE_TEMPLATE_INVOKE(value_in_range_of_test, \
+                          trait_test_arg<std::size_t, std::int32_t, false, true>, \
+                          trait_test_arg<std::size_t, std::uint32_t, true, true>, \
+                          trait_test_arg<std::size_t, std::int64_t, false, true>, \
+                          trait_test_arg<std::size_t, std::uint64_t, true, true>);
+#endif
+
+TEST_CASE("BJData")
+{
+    SECTION("binary_reader BJData LUT arrays are sorted")
+    {
+        std::vector<std::uint8_t> const data;
+        auto ia = nlohmann::detail::input_adapter(data);
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        nlohmann::detail::binary_reader<json, decltype(ia)> const br{std::move(ia), json::input_format_t::bjdata};
+
+        CHECK(std::is_sorted(br.bjd_optimized_type_markers.begin(), br.bjd_optimized_type_markers.end()));
+        CHECK(std::is_sorted(br.bjd_types_map.begin(), br.bjd_types_map.end()));
+    }
+
+    SECTION("individual values")
+    {
+        SECTION("discarded")
+        {
+            // discarded values are not serialized
+            json const j = json::value_t::discarded;
+            const auto result = json::to_bjdata(j);
+            CHECK(result.empty());
+        }
+
+        SECTION("null")
+        {
+            json const j = nullptr;
+            std::vector<uint8_t> const expected = {'Z'};
+            const auto result = json::to_bjdata(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bjdata(result) == j);
+            CHECK(json::from_bjdata(result, true, false) == j);
+        }
+
+        SECTION("boolean")
+        {
+            SECTION("true")
+            {
+                json const j = true;
+                std::vector<uint8_t> const expected = {'T'};
+                const auto result = json::to_bjdata(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_bjdata(result) == j);
+                CHECK(json::from_bjdata(result, true, false) == j);
+            }
+
+            SECTION("false")
+            {
+                json const j = false;
+                std::vector<uint8_t> const expected = {'F'};
+                const auto result = json::to_bjdata(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_bjdata(result) == j);
+                CHECK(json::from_bjdata(result, true, false) == j);
+            }
+        }
+
+        SECTION("number")
+        {
+            SECTION("signed")
+            {
+                SECTION("-9223372036854775808..-2147483649 (int64)")
+                {
+                    std::vector<int64_t> const numbers
+                    {
+                        (std::numeric_limits<int64_t>::min)(),
+                        -1000000000000000000LL,
+                        -100000000000000000LL,
+                        -10000000000000000LL,
+                        -1000000000000000LL,
+                        -100000000000000LL,
+                        -10000000000000LL,
+                        -1000000000000LL,
+                        -100000000000LL,
+                        -10000000000LL,
+                        -2147483649LL,
+                    };
+                    for (const auto i : numbers)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('L'),
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 32) & 0xff),
+                            static_cast<uint8_t>((i >> 40) & 0xff),
+                            static_cast<uint8_t>((i >> 48) & 0xff),
+                            static_cast<uint8_t>((i >> 56) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'L');
+                        int64_t const restored = (static_cast<int64_t>(result[8]) << 070) +
+                                                 (static_cast<int64_t>(result[7]) << 060) +
+                                                 (static_cast<int64_t>(result[6]) << 050) +
+                                                 (static_cast<int64_t>(result[5]) << 040) +
+                                                 (static_cast<int64_t>(result[4]) << 030) +
+                                                 (static_cast<int64_t>(result[3]) << 020) +
+                                                 (static_cast<int64_t>(result[2]) << 010) +
+                                                 static_cast<int64_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-2147483648..-32769 (int32)")
+                {
+                    std::vector<int32_t> const numbers
+                    {
+                        -32769,
+                            -100000,
+                            -1000000,
+                            -10000000,
+                            -100000000,
+                            -1000000000,
+                            -2147483647 - 1, // https://stackoverflow.com/a/29356002/266378
+                        };
+                    for (const auto i : numbers)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('l'),
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'l');
+                        int32_t const restored = (static_cast<int32_t>(result[4]) << 030) +
+                                                 (static_cast<int32_t>(result[3]) << 020) +
+                                                 (static_cast<int32_t>(result[2]) << 010) +
+                                                 static_cast<int32_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-32768..-129 (int16)")
+                {
+                    for (int32_t i = -32768; i <= -129; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('I'),
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'I');
+                        auto const restored = static_cast<int16_t>(((result[2] << 8) + result[1]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-9263 (int16)")
+                {
+                    json const j = -9263;
+                    std::vector<uint8_t> const expected = {'I', 0xd1, 0xdb};
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == 3);
+
+                    // check individual bytes
+                    CHECK(result[0] == 'I');
+                    auto const restored = static_cast<int16_t>(((result[2] << 8) + result[1]));
+                    CHECK(restored == -9263);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("-128..-1 (int8)")
+                {
+                    for (auto i = -128; i <= -1; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'i',
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'i');
+                        CHECK(static_cast<int8_t>(result[1]) == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("0..127 (int8)")
+                {
+                    for (size_t i = 0; i <= 127; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('i'),
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'i');
+                        CHECK(result[1] == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("128..255 (uint8)")
+                {
+                    for (size_t i = 128; i <= 255; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('U'),
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'U');
+                        CHECK(result[1] == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("256..32767 (int16)")
+                {
+                    for (size_t i = 256; i <= 32767; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('I'),
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'I');
+                        auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[2]) * 256) + static_cast<uint8_t>(result[1]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("32768..65535 (uint16)")
+                {
+                    for (const uint32_t i :
+                            {
+                                32768u, 55555u, 65535u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('u'),
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'u');
+                        auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[2]) * 256) + static_cast<uint8_t>(result[1]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("65536..2147483647 (int32)")
+                {
+                    for (const uint32_t i :
+                            {
+                                65536u, 77777u, 2147483647u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'l',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'l');
+                        uint32_t const restored = (static_cast<uint32_t>(result[4]) << 030) +
+                                                  (static_cast<uint32_t>(result[3]) << 020) +
+                                                  (static_cast<uint32_t>(result[2]) << 010) +
+                                                  static_cast<uint32_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("2147483648..4294967295 (uint32)")
+                {
+                    for (const uint32_t i :
+                            {
+                                2147483648u, 3333333333u, 4294967295u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'm',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'm');
+                        uint32_t const restored = (static_cast<uint32_t>(result[4]) << 030) +
+                                                  (static_cast<uint32_t>(result[3]) << 020) +
+                                                  (static_cast<uint32_t>(result[2]) << 010) +
+                                                  static_cast<uint32_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("4294967296..9223372036854775807 (int64)")
+                {
+                    std::vector<uint64_t> const v = {4294967296LU, 9223372036854775807LU};
+                    for (const uint64_t i : v)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'L',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'L');
+                        uint64_t const restored = (static_cast<uint64_t>(result[8]) << 070) +
+                                                  (static_cast<uint64_t>(result[7]) << 060) +
+                                                  (static_cast<uint64_t>(result[6]) << 050) +
+                                                  (static_cast<uint64_t>(result[5]) << 040) +
+                                                  (static_cast<uint64_t>(result[4]) << 030) +
+                                                  (static_cast<uint64_t>(result[3]) << 020) +
+                                                  (static_cast<uint64_t>(result[2]) << 010) +
+                                                  static_cast<uint64_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("9223372036854775808..18446744073709551615 (uint64)")
+                {
+                    std::vector<uint64_t> const v = {9223372036854775808ull, 18446744073709551615ull};
+                    for (const uint64_t i : v)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'M',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'M');
+                        uint64_t const restored = (static_cast<uint64_t>(result[8]) << 070) +
+                                                  (static_cast<uint64_t>(result[7]) << 060) +
+                                                  (static_cast<uint64_t>(result[6]) << 050) +
+                                                  (static_cast<uint64_t>(result[5]) << 040) +
+                                                  (static_cast<uint64_t>(result[4]) << 030) +
+                                                  (static_cast<uint64_t>(result[3]) << 020) +
+                                                  (static_cast<uint64_t>(result[2]) << 010) +
+                                                  static_cast<uint64_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+            }
+
+            SECTION("unsigned")
+            {
+                SECTION("0..127 (int8)")
+                {
+                    for (size_t i = 0; i <= 127; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected{'i', static_cast<uint8_t>(i)};
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'i');
+                        auto const restored = static_cast<uint8_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("128..255 (uint8)")
+                {
+                    for (size_t i = 128; i <= 255; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected{'U', static_cast<uint8_t>(i)};
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'U');
+                        auto const restored = static_cast<uint8_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("256..32767 (int16)")
+                {
+                    for (size_t i = 256; i <= 32767; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'I',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'I');
+                        auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[2]) * 256) + static_cast<uint8_t>(result[1]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("32768..65535 (uint16)")
+                {
+                    for (const uint32_t i :
+                            {
+                                32768u, 55555u, 65535u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'u',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'u');
+                        auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[2]) * 256) + static_cast<uint8_t>(result[1]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+                SECTION("65536..2147483647 (int32)")
+                {
+                    for (const uint32_t i :
+                            {
+                                65536u, 77777u, 2147483647u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'l',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'l');
+                        uint32_t const restored = (static_cast<uint32_t>(result[4]) << 030) +
+                                                  (static_cast<uint32_t>(result[3]) << 020) +
+                                                  (static_cast<uint32_t>(result[2]) << 010) +
+                                                  static_cast<uint32_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("2147483648..4294967295 (uint32)")
+                {
+                    for (const uint32_t i :
+                            {
+                                2147483648u, 3333333333u, 4294967295u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'm',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'm');
+                        uint32_t const restored = (static_cast<uint32_t>(result[4]) << 030) +
+                                                  (static_cast<uint32_t>(result[3]) << 020) +
+                                                  (static_cast<uint32_t>(result[2]) << 010) +
+                                                  static_cast<uint32_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("4294967296..9223372036854775807 (int64)")
+                {
+                    std::vector<uint64_t> const v = {4294967296ul, 9223372036854775807ul};
+                    for (const uint64_t i : v)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'L',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'L');
+                        uint64_t const restored = (static_cast<uint64_t>(result[8]) << 070) +
+                                                  (static_cast<uint64_t>(result[7]) << 060) +
+                                                  (static_cast<uint64_t>(result[6]) << 050) +
+                                                  (static_cast<uint64_t>(result[5]) << 040) +
+                                                  (static_cast<uint64_t>(result[4]) << 030) +
+                                                  (static_cast<uint64_t>(result[3]) << 020) +
+                                                  (static_cast<uint64_t>(result[2]) << 010) +
+                                                  static_cast<uint64_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+
+                SECTION("9223372036854775808..18446744073709551615 (uint64)")
+                {
+                    std::vector<uint64_t> const v = {9223372036854775808ull, 18446744073709551615ull};
+                    for (const uint64_t i : v)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'M',
+                            static_cast<uint8_t>(i & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_bjdata(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'M');
+                        uint64_t const restored = (static_cast<uint64_t>(result[8]) << 070) +
+                                                  (static_cast<uint64_t>(result[7]) << 060) +
+                                                  (static_cast<uint64_t>(result[6]) << 050) +
+                                                  (static_cast<uint64_t>(result[5]) << 040) +
+                                                  (static_cast<uint64_t>(result[4]) << 030) +
+                                                  (static_cast<uint64_t>(result[3]) << 020) +
+                                                  (static_cast<uint64_t>(result[2]) << 010) +
+                                                  static_cast<uint64_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_bjdata(result) == j);
+                        CHECK(json::from_bjdata(result, true, false) == j);
+                    }
+                }
+            }
+            SECTION("float64")
+            {
+                SECTION("3.1415925")
+                {
+                    double v = 3.1415925;
+                    json const j = v;
+                    std::vector<uint8_t> const expected =
+                    {
+                        'D', 0xfc, 0xde, 0xa6, 0x3f, 0xfb, 0x21, 0x09, 0x40
+                    };
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result) == v);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("half-precision float")
+            {
+                SECTION("simple half floats")
+                {
+                    CHECK(json::parse("0.0") == json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x00})));
+                    CHECK(json::parse("-0.0") == json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x80})));
+                    CHECK(json::parse("1.0") == json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x3c})));
+                    CHECK(json::parse("1.5") == json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x3e})));
+                    CHECK(json::parse("65504.0") == json::from_bjdata(std::vector<uint8_t>({'h', 0xff, 0x7b})));
+                }
+
+                SECTION("errors")
+                {
+                    SECTION("no byte follows")
+                    {
+                        json _;
+                        std::vector<uint8_t> const vec0 = {'h'};
+                        CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vec0), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+                        CHECK(json::from_bjdata(vec0, true, false).is_discarded());
+                    }
+
+                    SECTION("only one byte follows")
+                    {
+                        json _;
+                        std::vector<uint8_t> const vec1 = {'h', 0x00};
+                        CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vec1), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+                        CHECK(json::from_bjdata(vec1, true, false).is_discarded());
+                    }
+                }
+            }
+
+            SECTION("half-precision float (edge cases)")
+            {
+                SECTION("exp = 0b00000")
+                {
+                    SECTION("0 (0 00000 0000000000)")
+                    {
+                        json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x00}));
+                        json::number_float_t d{j};
+                        CHECK(d == 0.0);
+                    }
+
+                    SECTION("-0 (1 00000 0000000000)")
+                    {
+                        json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x80}));
+                        json::number_float_t d{j};
+                        CHECK(d == -0.0);
+                    }
+
+                    SECTION("2**-24 (0 00000 0000000001)")
+                    {
+                        json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x01, 0x00}));
+                        json::number_float_t d{j};
+                        CHECK(d == std::pow(2.0, -24.0));
+                    }
+                }
+
+                SECTION("exp = 0b11111")
+                {
+                    SECTION("infinity (0 11111 0000000000)")
+                    {
+                        json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x7c}));
+                        json::number_float_t d{j};
+                        CHECK(d == std::numeric_limits<json::number_float_t>::infinity());
+                        CHECK(j.dump() == "null");
+                    }
+
+                    SECTION("-infinity (1 11111 0000000000)")
+                    {
+                        json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0xfc}));
+                        json::number_float_t d{j};
+                        CHECK(d == -std::numeric_limits<json::number_float_t>::infinity());
+                        CHECK(j.dump() == "null");
+                    }
+                }
+
+                SECTION("other values from https://en.wikipedia.org/wiki/Half-precision_floating-point_format")
+                {
+                    SECTION("1 (0 01111 0000000000)")
+                    {
+                        json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x3c}));
+                        json::number_float_t d{j};
+                        CHECK(d == 1);
+                    }
+
+                    SECTION("-2 (1 10000 0000000000)")
+                    {
+                        json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0xc0}));
+                        json::number_float_t d{j};
+                        CHECK(d == -2);
+                    }
+
+                    SECTION("65504 (0 11110 1111111111)")
+                    {
+                        json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0xff, 0x7b}));
+                        json::number_float_t d{j};
+                        CHECK(d == 65504);
+                    }
+                }
+
+                SECTION("infinity")
+                {
+                    json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x7c}));
+                    json::number_float_t const d{j};
+                    CHECK_FALSE(std::isfinite(d));
+                    CHECK(j.dump() == "null");
+                }
+
+                SECTION("NaN")
+                {
+                    json const j = json::from_bjdata(std::vector<uint8_t>({'h', 0x00, 0x7e }));
+                    json::number_float_t const d{j};
+                    CHECK(std::isnan(d));
+                    CHECK(j.dump() == "null");
+                }
+            }
+
+            SECTION("high-precision number")
+            {
+                SECTION("unsigned integer number")
+                {
+                    std::vector<uint8_t> const vec = {'H', 'i', 0x14, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0'};
+                    const auto j = json::from_bjdata(vec);
+                    CHECK(j.is_number_unsigned());
+                    CHECK(j.dump() == "12345678901234567890");
+                }
+
+                SECTION("signed integer number")
+                {
+                    std::vector<uint8_t> const vec = {'H', 'i', 0x13, '-', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8'};
+                    const auto j = json::from_bjdata(vec);
+                    CHECK(j.is_number_integer());
+                    CHECK(j.dump() == "-123456789012345678");
+                }
+
+                SECTION("floating-point number")
+                {
+                    std::vector<uint8_t> const vec = {'H', 'i', 0x16, '3', '.', '1', '4', '1', '5', '9',  '2', '6', '5', '3', '5', '8', '9',  '7', '9', '3', '2', '3', '8', '4',  '6'};
+                    const auto j = json::from_bjdata(vec);
+                    CHECK(j.is_number_float());
+                    CHECK(j.dump() == "3.141592653589793");
+                }
+
+                SECTION("errors")
+                {
+                    // error while parsing length
+                    std::vector<uint8_t> const vec0 = {'H', 'i'};
+                    CHECK(json::from_bjdata(vec0, true, false).is_discarded());
+                    // error while parsing string
+                    std::vector<uint8_t> const vec1 = {'H', 'i', '1'};
+                    CHECK(json::from_bjdata(vec1, true, false).is_discarded());
+
+                    json _;
+                    std::vector<uint8_t> const vec2 = {'H', 'i', 2, '1', 'A', '3'};
+                    CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vec2), "[json.exception.parse_error.115] parse error at byte 5: syntax error while parsing BJData high-precision number: invalid number text: 1A", json::parse_error);
+                    std::vector<uint8_t> const vec3 = {'H', 'i', 2, '1', '.'};
+                    CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vec3), "[json.exception.parse_error.115] parse error at byte 5: syntax error while parsing BJData high-precision number: invalid number text: 1.", json::parse_error);
+                    std::vector<uint8_t> const vec4 = {'H', 2, '1', '0'};
+                    CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vec4), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing BJData size: expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x02", json::parse_error);
+                }
+            }
+        }
+
+        SECTION("string")
+        {
+            SECTION("N = 0..127")
+            {
+                for (size_t N = 0; N <= 127; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back('S');
+                    expected.push_back('i');
+                    expected.push_back(static_cast<uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 3);
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 128..255")
+            {
+                for (size_t N = 128; N <= 255; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back('S');
+                    expected.push_back('U');
+                    expected.push_back(static_cast<uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 3);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 256..32767")
+            {
+                for (const size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 32767u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), 'I');
+                    expected.insert(expected.begin(), 'S');
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 4);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 32768..65535")
+            {
+                for (const size_t N :
+                        {
+                            32768u, 55555u, 65535u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), 'u');
+                    expected.insert(expected.begin(), 'S');
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 4);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 65536..2147483647")
+            {
+                for (const size_t N :
+                        {
+                            65536u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 24) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 16) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), 'l');
+                    expected.insert(expected.begin(), 'S');
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 6);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+        }
+
+        SECTION("binary")
+        {
+            SECTION("N = 0..127")
+            {
+                for (std::size_t N = 0; N <= 127; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<std::uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>('['));
+                    if (N != 0)
+                    {
+                        expected.push_back(static_cast<std::uint8_t>('$'));
+                        expected.push_back(static_cast<std::uint8_t>('U'));
+                    }
+                    expected.push_back(static_cast<std::uint8_t>('#'));
+                    expected.push_back(static_cast<std::uint8_t>('i'));
+                    expected.push_back(static_cast<std::uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(0x78);
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+                    if (N == 0)
+                    {
+                        CHECK(result.size() == N + 4);
+                    }
+                    else
+                    {
+                        CHECK(result.size() == N + 6);
+                    }
+
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_bjdata(result) == j_out);
+                    CHECK(json::from_bjdata(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("N = 128..255")
+            {
+                for (std::size_t N = 128; N <= 255; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>('['));
+                    expected.push_back(static_cast<std::uint8_t>('$'));
+                    expected.push_back(static_cast<std::uint8_t>('U'));
+                    expected.push_back(static_cast<std::uint8_t>('#'));
+                    expected.push_back(static_cast<std::uint8_t>('U'));
+                    expected.push_back(static_cast<std::uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(0x78);
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 6);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_bjdata(result) == j_out);
+                    CHECK(json::from_bjdata(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("N = 256..32767")
+            {
+                for (const std::size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 32767u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<std::uint8_t> expected(N + 7, 'x');
+                    expected[0] = '[';
+                    expected[1] = '$';
+                    expected[2] = 'U';
+                    expected[3] = '#';
+                    expected[4] = 'I';
+                    expected[5] = static_cast<std::uint8_t>(N & 0xFF);
+                    expected[6] = static_cast<std::uint8_t>((N >> 8) & 0xFF);
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 7);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_bjdata(result) == j_out);
+                    CHECK(json::from_bjdata(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("N = 32768..65535")
+            {
+                for (const std::size_t N :
+                        {
+                            32768u, 55555u, 65535u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<std::uint8_t> expected(N + 7, 'x');
+                    expected[0] = '[';
+                    expected[1] = '$';
+                    expected[2] = 'U';
+                    expected[3] = '#';
+                    expected[4] = 'u';
+                    expected[5] = static_cast<std::uint8_t>(N & 0xFF);
+                    expected[6] = static_cast<std::uint8_t>((N >> 8) & 0xFF);
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 7);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_bjdata(result) == j_out);
+                    CHECK(json::from_bjdata(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("N = 65536..2147483647")
+            {
+                for (const std::size_t N :
+                        {
+                            65536u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<std::uint8_t> expected(N + 9, 'x');
+                    expected[0] = '[';
+                    expected[1] = '$';
+                    expected[2] = 'U';
+                    expected[3] = '#';
+                    expected[4] = 'l';
+                    expected[5] = static_cast<std::uint8_t>(N & 0xFF);
+                    expected[6] = static_cast<std::uint8_t>((N >> 8) & 0xFF);
+                    expected[7] = static_cast<std::uint8_t>((N >> 16) & 0xFF);
+                    expected[8] = static_cast<std::uint8_t>((N >> 24) & 0xFF);
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 9);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_bjdata(result) == j_out);
+                    CHECK(json::from_bjdata(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("Other Serializations")
+            {
+                const std::size_t N = 10;
+                const auto s = std::vector<std::uint8_t>(N, 'x');
+                json const j = json::binary(s);
+
+                SECTION("No Count No Type")
+                {
+                    std::vector<uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>('['));
+                    for (std::size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(static_cast<std::uint8_t>('U'));
+                        expected.push_back(static_cast<std::uint8_t>(0x78));
+                    }
+                    expected.push_back(static_cast<std::uint8_t>(']'));
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j, false, false);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 12);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_bjdata(result) == j_out);
+                    CHECK(json::from_bjdata(result, true, false) == j_out);
+                }
+
+                SECTION("Yes Count No Type")
+                {
+                    std::vector<std::uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>('['));
+                    expected.push_back(static_cast<std::uint8_t>('#'));
+                    expected.push_back(static_cast<std::uint8_t>('i'));
+                    expected.push_back(static_cast<std::uint8_t>(N));
+
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(static_cast<std::uint8_t>('U'));
+                        expected.push_back(static_cast<std::uint8_t>(0x78));
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_bjdata(j, true, false);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 14);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_bjdata(result) == j_out);
+                    CHECK(json::from_bjdata(result, true, false) == j_out);
+                }
+            }
+        }
+        SECTION("array")
+        {
+            SECTION("empty")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::array();
+                    std::vector<uint8_t> const expected = {'[', ']'};
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::array();
+                    std::vector<uint8_t> const expected = {'[', '#', 'i', 0};
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::array();
+                    std::vector<uint8_t> const expected = {'[', '#', 'i', 0};
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("[null]")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = {nullptr};
+                    std::vector<uint8_t> const expected = {'[', 'Z', ']'};
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = {nullptr};
+                    std::vector<uint8_t> const expected = {'[', '#', 'i', 1, 'Z'};
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = {nullptr};
+                    std::vector<uint8_t> const expected = {'[', '#', 'i', 1, 'Z'};
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("[1,2,3,4,5]")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::parse("[1,2,3,4,5]");
+                    std::vector<uint8_t> const expected = {'[', 'i', 1, 'i', 2, 'i', 3, 'i', 4, 'i', 5, ']'};
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::parse("[1,2,3,4,5]");
+                    std::vector<uint8_t> const expected = {'[', '#', 'i', 5, 'i', 1, 'i', 2, 'i', 3, 'i', 4, 'i', 5};
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::parse("[1,2,3,4,5]");
+                    std::vector<uint8_t> const expected = {'[', '$', 'i', '#', 'i', 5, 1, 2, 3, 4, 5};
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("[[[[]]]]")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::parse("[[[[]]]]");
+                    std::vector<uint8_t> const expected = {'[', '[', '[', '[', ']', ']', ']', ']'};
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::parse("[[[[]]]]");
+                    std::vector<uint8_t> const expected = {'[', '#', 'i', 1, '[', '#', 'i', 1, '[', '#', 'i', 1, '[', '#', 'i', 0};
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::parse("[[[[]]]]");
+                    std::vector<uint8_t> const expected = {'[', '#', 'i', 1, '[', '#', 'i', 1, '[', '#', 'i', 1, '[', '#', 'i', 0};
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("array with int16_t elements")
+            {
+                SECTION("size=false type=false")
+                {
+                    json j(257, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 2, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[258] = ']'; // closing array
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json j(257, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 5, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[1] = '#'; // array size
+                    expected[2] = 'I'; // int16
+                    expected[3] = 0x01; // 0x0101, first byte
+                    expected[4] = 0x01; // 0x0101, second byte
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("array with uint16_t elements")
+            {
+                SECTION("size=false type=false")
+                {
+                    json j(32768, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 2, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[32769] = ']'; // closing array
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json j(32768, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 5, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[1] = '#'; // array size
+                    expected[2] = 'u'; // int16
+                    expected[3] = 0x00; // 0x0101, first byte
+                    expected[4] = 0x80; // 0x0101, second byte
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("array with int32_t elements")
+            {
+                SECTION("size=false type=false")
+                {
+                    json j(65793, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 2, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[65794] = ']'; // closing array
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json j(65793, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 7, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[1] = '#'; // array size
+                    expected[2] = 'l'; // int32
+                    expected[3] = 0x01; // 0x00010101, fourth byte
+                    expected[4] = 0x01; // 0x00010101, third byte
+                    expected[5] = 0x01; // 0x00010101, second byte
+                    expected[6] = 0x00; // 0x00010101, first byte
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::object();
+                    std::vector<uint8_t> const expected = {'{', '}'};
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::object();
+                    std::vector<uint8_t> const expected = {'{', '#', 'i', 0};
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::object();
+                    std::vector<uint8_t> const expected = {'{', '#', 'i', 0};
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("{\"\":null}")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = {{"", nullptr}};
+                    std::vector<uint8_t> const expected = {'{', 'i', 0, 'Z', '}'};
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = {{"", nullptr}};
+                    std::vector<uint8_t> const expected = {'{', '#', 'i', 1, 'i', 0, 'Z'};
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+
+            SECTION("{\"a\": {\"b\": {\"c\": {}}}}")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
+                    std::vector<uint8_t> const expected =
+                    {
+                        '{', 'i', 1, 'a', '{', 'i', 1, 'b', '{', 'i', 1, 'c', '{', '}', '}', '}', '}'
+                    };
+                    const auto result = json::to_bjdata(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
+                    std::vector<uint8_t> const expected =
+                    {
+                        '{', '#', 'i', 1, 'i', 1, 'a', '{', '#', 'i', 1, 'i', 1, 'b', '{', '#', 'i', 1, 'i', 1, 'c', '{', '#', 'i', 0
+                    };
+                    const auto result = json::to_bjdata(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true ignore object type marker")
+                {
+                    json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
+                    std::vector<uint8_t> const expected =
+                    {
+                        '{', '#', 'i', 1, 'i', 1, 'a', '{', '#', 'i', 1, 'i', 1, 'b', '{', '#', 'i', 1, 'i', 1, 'c', '{', '#', 'i', 0
+                    };
+                    const auto result = json::to_bjdata(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_bjdata(result) == j);
+                    CHECK(json::from_bjdata(result, true, false) == j);
+                }
+            }
+        }
+    }
+
+    SECTION("errors")
+    {
+        SECTION("strict mode")
+        {
+            std::vector<uint8_t> const vec = {'Z', 'Z'};
+            SECTION("non-strict mode")
+            {
+                const auto result = json::from_bjdata(vec, false);
+                CHECK(result == json());
+            }
+
+            SECTION("strict mode")
+            {
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vec),
+                                     "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing BJData value: expected end of input; last byte: 0x5A", json::parse_error&);
+            }
+        }
+    }
+
+    SECTION("SAX aborts")
+    {
+        SECTION("start_array()")
+        {
+            std::vector<uint8_t> const v = {'[', 'T', 'F', ']'};
+            SaxCountdown scp(0);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("start_object()")
+        {
+            std::vector<uint8_t> const v = {'{', 'i', 3, 'f', 'o', 'o', 'F', '}'};
+            SaxCountdown scp(0);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("key() in object")
+        {
+            std::vector<uint8_t> const v = {'{', 'i', 3, 'f', 'o', 'o', 'F', '}'};
+            SaxCountdown scp(1);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("start_array(len)")
+        {
+            std::vector<uint8_t> const v = {'[', '#', 'i', '2', 'T', 'F'};
+            SaxCountdown scp(0);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("start_object(len)")
+        {
+            std::vector<uint8_t> const v = {'{', '#', 'i', '1', 3, 'f', 'o', 'o', 'F'};
+            SaxCountdown scp(0);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("key() in object with length")
+        {
+            std::vector<uint8_t> const v = {'{', 'i', 3, 'f', 'o', 'o', 'F', '}'};
+            SaxCountdown scp(1);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("start_array() in ndarray _ArraySize_")
+        {
+            std::vector<uint8_t> const v = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'i', 2, 2, 1, 1, 2};
+            SaxCountdown scp(2);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("number_integer() in ndarray _ArraySize_")
+        {
+            std::vector<uint8_t> const v = {'[', '$', 'U', '#', '[', '$', 'i', '#', 'i', 2, 2, 1, 1, 2};
+            SaxCountdown scp(3);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("key() in ndarray _ArrayType_")
+        {
+            std::vector<uint8_t> const v = {'[', '$', 'U', '#', '[', '$', 'U', '#', 'i', 2, 2, 2, 1, 2, 3, 4};
+            SaxCountdown scp(6);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("string() in ndarray _ArrayType_")
+        {
+            std::vector<uint8_t> const v = {'[', '$', 'U', '#', '[', '$', 'U', '#', 'i', 2, 2, 2, 1, 2, 3, 4};
+            SaxCountdown scp(7);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("key() in ndarray _ArrayData_")
+        {
+            std::vector<uint8_t> const v = {'[', '$', 'U', '#', '[', '$', 'U', '#', 'i', 2, 2, 2, 1, 2, 3, 4};
+            SaxCountdown scp(8);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("string() in ndarray _ArrayData_")
+        {
+            std::vector<uint8_t> const v = {'[', '$', 'U', '#', '[', '$', 'U', '#', 'i', 2, 2, 2, 1, 2, 3, 4};
+            SaxCountdown scp(9);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("string() in ndarray _ArrayType_")
+        {
+            std::vector<uint8_t> const v = {'[', '$', 'U', '#', '[', '$', 'i', '#', 'i', 2, 3, 2, 6, 5, 4, 3, 2, 1};
+            SaxCountdown scp(11);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+
+        SECTION("start_array() in ndarray _ArrayData_")
+        {
+            std::vector<uint8_t> const v = {'[', '$', 'U', '#', '[', 'i', 2, 'i', 3, ']', 6, 5, 4, 3, 2, 1};
+            SaxCountdown scp(13);
+            CHECK_FALSE(json::sax_parse(v, &scp, json::input_format_t::bjdata));
+        }
+    }
+
+    SECTION("parsing values")
+    {
+        SECTION("strings")
+        {
+            // create a single-character string for all number types
+            std::vector<uint8_t> s_i = {'S', 'i', 1, 'a'};
+            std::vector<uint8_t> const s_U = {'S', 'U', 1, 'a'};
+            std::vector<uint8_t> const s_I = {'S', 'I', 1, 0, 'a'};
+            std::vector<uint8_t> const s_u = {'S', 'u', 1, 0, 'a'};
+            std::vector<uint8_t> const s_l = {'S', 'l', 1, 0, 0, 0, 'a'};
+            std::vector<uint8_t> const s_m = {'S', 'm', 1, 0, 0, 0, 'a'};
+            std::vector<uint8_t> const s_L = {'S', 'L', 1, 0, 0, 0, 0, 0, 0, 0, 'a'};
+            std::vector<uint8_t> const s_M = {'S', 'M', 1, 0, 0, 0, 0, 0, 0, 0, 'a'};
+
+            // check if string is parsed correctly to "a"
+            CHECK(json::from_bjdata(s_i) == "a");
+            CHECK(json::from_bjdata(s_U) == "a");
+            CHECK(json::from_bjdata(s_I) == "a");
+            CHECK(json::from_bjdata(s_u) == "a");
+            CHECK(json::from_bjdata(s_l) == "a");
+            CHECK(json::from_bjdata(s_m) == "a");
+            CHECK(json::from_bjdata(s_L) == "a");
+            CHECK(json::from_bjdata(s_M) == "a");
+
+            // roundtrip: output should be optimized
+            CHECK(json::to_bjdata(json::from_bjdata(s_i)) == s_i);
+            CHECK(json::to_bjdata(json::from_bjdata(s_U)) == s_i);
+            CHECK(json::to_bjdata(json::from_bjdata(s_I)) == s_i);
+            CHECK(json::to_bjdata(json::from_bjdata(s_u)) == s_i);
+            CHECK(json::to_bjdata(json::from_bjdata(s_l)) == s_i);
+            CHECK(json::to_bjdata(json::from_bjdata(s_m)) == s_i);
+            CHECK(json::to_bjdata(json::from_bjdata(s_L)) == s_i);
+            CHECK(json::to_bjdata(json::from_bjdata(s_M)) == s_i);
+        }
+
+        SECTION("number")
+        {
+            SECTION("float")
+            {
+                // float32
+                std::vector<uint8_t> const v_d = {'d', 0xd0, 0x0f, 0x49, 0x40};
+                CHECK(json::from_bjdata(v_d) == 3.14159f);
+
+                // float64
+                std::vector<uint8_t> const v_D = {'D', 0x6e, 0x86, 0x1b, 0xf0, 0xf9, 0x21, 0x09, 0x40};
+                CHECK(json::from_bjdata(v_D) == 3.14159);
+
+                // float32 is serialized as float64 as the library does not support float32
+                CHECK(json::to_bjdata(json::from_bjdata(v_d)) == json::to_bjdata(3.14159f));
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("optimized version (length only)")
+            {
+                // create vector with two elements of the same type
+                std::vector<uint8_t> const v_TU = {'[', '#', 'U', 2, 'T', 'T'};
+                std::vector<uint8_t> const v_T = {'[', '#', 'i', 2, 'T', 'T'};
+                std::vector<uint8_t> const v_F = {'[', '#', 'i', 2, 'F', 'F'};
+                std::vector<uint8_t> const v_Z = {'[', '#', 'i', 2, 'Z', 'Z'};
+                std::vector<uint8_t> const v_i = {'[', '#', 'i', 2, 'i', 0x7F, 'i', 0x7F};
+                std::vector<uint8_t> const v_U = {'[', '#', 'i', 2, 'U', 0xFF, 'U', 0xFF};
+                std::vector<uint8_t> const v_I = {'[', '#', 'i', 2, 'I', 0xFF, 0x7F, 'I', 0xFF, 0x7F};
+                std::vector<uint8_t> const v_u = {'[', '#', 'i', 2, 'u', 0x0F, 0xA7, 'u', 0x0F, 0xA7};
+                std::vector<uint8_t> const v_l = {'[', '#', 'i', 2, 'l', 0xFF, 0xFF, 0xFF, 0x7F, 'l', 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_m = {'[', '#', 'i', 2, 'm', 0xFF, 0xC9, 0x9A, 0xBB, 'm', 0xFF, 0xC9, 0x9A, 0xBB};
+                std::vector<uint8_t> const v_L = {'[', '#', 'i', 2, 'L', 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 'L', 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_M = {'[', '#', 'i', 2, 'M', 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D, 'M', 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D};
+                std::vector<uint8_t> const v_D = {'[', '#', 'i', 2, 'D', 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40, 'D', 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40};
+                std::vector<uint8_t> const v_S = {'[', '#', 'i', 2, 'S', 'i', 1, 'a', 'S', 'i', 1, 'a'};
+                std::vector<uint8_t> const v_C = {'[', '#', 'i', 2, 'C', 'a', 'C', 'a'};
+
+                // check if vector is parsed correctly
+                CHECK(json::from_bjdata(v_TU) == json({true, true}));
+                CHECK(json::from_bjdata(v_T) == json({true, true}));
+                CHECK(json::from_bjdata(v_F) == json({false, false}));
+                CHECK(json::from_bjdata(v_Z) == json({nullptr, nullptr}));
+                CHECK(json::from_bjdata(v_i) == json({127, 127}));
+                CHECK(json::from_bjdata(v_U) == json({255, 255}));
+                CHECK(json::from_bjdata(v_I) == json({32767, 32767}));
+                CHECK(json::from_bjdata(v_u) == json({42767, 42767}));
+                CHECK(json::from_bjdata(v_l) == json({2147483647, 2147483647}));
+                CHECK(json::from_bjdata(v_m) == json({3147483647, 3147483647}));
+                CHECK(json::from_bjdata(v_L) == json({9223372036854775807, 9223372036854775807}));
+                CHECK(json::from_bjdata(v_M) == json({10223372036854775807ull, 10223372036854775807ull}));
+                CHECK(json::from_bjdata(v_D) == json({3.1415926, 3.1415926}));
+                CHECK(json::from_bjdata(v_S) == json({"a", "a"}));
+                CHECK(json::from_bjdata(v_C) == json({"a", "a"}));
+
+                // roundtrip: output should be optimized
+                CHECK(json::to_bjdata(json::from_bjdata(v_T), true) == v_T);
+                CHECK(json::to_bjdata(json::from_bjdata(v_F), true) == v_F);
+                CHECK(json::to_bjdata(json::from_bjdata(v_Z), true) == v_Z);
+                CHECK(json::to_bjdata(json::from_bjdata(v_i), true) == v_i);
+                CHECK(json::to_bjdata(json::from_bjdata(v_U), true) == v_U);
+                CHECK(json::to_bjdata(json::from_bjdata(v_I), true) == v_I);
+                CHECK(json::to_bjdata(json::from_bjdata(v_u), true) == v_u);
+                CHECK(json::to_bjdata(json::from_bjdata(v_l), true) == v_l);
+                CHECK(json::to_bjdata(json::from_bjdata(v_m), true) == v_m);
+                CHECK(json::to_bjdata(json::from_bjdata(v_L), true) == v_L);
+                CHECK(json::to_bjdata(json::from_bjdata(v_M), true) == v_M);
+                CHECK(json::to_bjdata(json::from_bjdata(v_D), true) == v_D);
+                CHECK(json::to_bjdata(json::from_bjdata(v_S), true) == v_S);
+                CHECK(json::to_bjdata(json::from_bjdata(v_C), true) == v_S); // char is serialized to string
+            }
+
+            SECTION("optimized version (type and length)")
+            {
+                // create vector with two elements of the same type
+                std::vector<uint8_t> const v_i = {'[', '$', 'i', '#', 'i', 2, 0x7F, 0x7F};
+                std::vector<uint8_t> const v_U = {'[', '$', 'U', '#', 'i', 2, 0xFF, 0xFF};
+                std::vector<uint8_t> const v_I = {'[', '$', 'I', '#', 'i', 2, 0xFF, 0x7F, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_u = {'[', '$', 'u', '#', 'i', 2, 0x0F, 0xA7, 0x0F, 0xA7};
+                std::vector<uint8_t> const v_l = {'[', '$', 'l', '#', 'i', 2, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_m = {'[', '$', 'm', '#', 'i', 2, 0xFF, 0xC9, 0x9A, 0xBB, 0xFF, 0xC9, 0x9A, 0xBB};
+                std::vector<uint8_t> const v_L = {'[', '$', 'L', '#', 'i', 2, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_M = {'[', '$', 'M', '#', 'i', 2, 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D, 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D};
+                std::vector<uint8_t> const v_D = {'[', '$', 'D', '#', 'i', 2, 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40, 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40};
+                std::vector<uint8_t> const v_S = {'[', '#', 'i', 2, 'S', 'i', 1, 'a', 'S', 'i', 1, 'a'};
+                std::vector<uint8_t> const v_C = {'[', '$', 'C', '#', 'i', 2, 'a', 'a'};
+
+                // check if vector is parsed correctly
+                CHECK(json::from_bjdata(v_i) == json({127, 127}));
+                CHECK(json::from_bjdata(v_U) == json({255, 255}));
+                CHECK(json::from_bjdata(v_I) == json({32767, 32767}));
+                CHECK(json::from_bjdata(v_u) == json({42767, 42767}));
+                CHECK(json::from_bjdata(v_l) == json({2147483647, 2147483647}));
+                CHECK(json::from_bjdata(v_m) == json({3147483647, 3147483647}));
+                CHECK(json::from_bjdata(v_L) == json({9223372036854775807, 9223372036854775807}));
+                CHECK(json::from_bjdata(v_M) == json({10223372036854775807ull, 10223372036854775807ull}));
+                CHECK(json::from_bjdata(v_D) == json({3.1415926, 3.1415926}));
+                CHECK(json::from_bjdata(v_S) == json({"a", "a"}));
+                CHECK(json::from_bjdata(v_C) == json({"a", "a"}));
+
+                // roundtrip: output should be optimized
+                std::vector<uint8_t> const v_empty = {'[', '#', 'i', 0};
+                CHECK(json::to_bjdata(json::from_bjdata(v_i), true, true) == v_i);
+                CHECK(json::to_bjdata(json::from_bjdata(v_U), true, true) == v_U);
+                CHECK(json::to_bjdata(json::from_bjdata(v_I), true, true) == v_I);
+                CHECK(json::to_bjdata(json::from_bjdata(v_u), true, true) == v_u);
+                CHECK(json::to_bjdata(json::from_bjdata(v_l), true, true) == v_l);
+                CHECK(json::to_bjdata(json::from_bjdata(v_m), true, true) == v_m);
+                CHECK(json::to_bjdata(json::from_bjdata(v_L), true, true) == v_L);
+                CHECK(json::to_bjdata(json::from_bjdata(v_M), true, true) == v_M);
+                CHECK(json::to_bjdata(json::from_bjdata(v_D), true, true) == v_D);
+                CHECK(json::to_bjdata(json::from_bjdata(v_S), true, true) == v_S);
+                CHECK(json::to_bjdata(json::from_bjdata(v_C), true, true) == v_S); // char is serialized to string
+            }
+
+            SECTION("optimized ndarray (type and vector-size as optimized 1D array)")
+            {
+                // create vector with two elements of the same type
+                std::vector<uint8_t> const v_0 = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'i', 1, 0};
+                std::vector<uint8_t> const v_1 = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'i', 1, 2, 0x7F, 0x7F};
+                std::vector<uint8_t> const v_i = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0x7F, 0x7F};
+                std::vector<uint8_t> const v_U = {'[', '$', 'U', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0xFF, 0xFF};
+                std::vector<uint8_t> const v_I = {'[', '$', 'I', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0xFF, 0x7F, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_u = {'[', '$', 'u', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0x0F, 0xA7, 0x0F, 0xA7};
+                std::vector<uint8_t> const v_l = {'[', '$', 'l', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_m = {'[', '$', 'm', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0xFF, 0xC9, 0x9A, 0xBB, 0xFF, 0xC9, 0x9A, 0xBB};
+                std::vector<uint8_t> const v_L = {'[', '$', 'L', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_M = {'[', '$', 'M', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D, 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D};
+                std::vector<uint8_t> const v_D = {'[', '$', 'D', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40, 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40};
+                std::vector<uint8_t> const v_S = {'[', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 'S', 'i', 1, 'a', 'S', 'i', 1, 'a'};
+                std::vector<uint8_t> const v_C = {'[', '$', 'C', '#', '[', '$', 'i', '#', 'i', 2, 1, 2, 'a', 'a'};
+
+                // check if vector is parsed correctly
+                CHECK(json::from_bjdata(v_0) == json::array());
+                CHECK(json::from_bjdata(v_1) == json({127, 127}));
+                CHECK(json::from_bjdata(v_i) == json({127, 127}));
+                CHECK(json::from_bjdata(v_U) == json({255, 255}));
+                CHECK(json::from_bjdata(v_I) == json({32767, 32767}));
+                CHECK(json::from_bjdata(v_u) == json({42767, 42767}));
+                CHECK(json::from_bjdata(v_l) == json({2147483647, 2147483647}));
+                CHECK(json::from_bjdata(v_m) == json({3147483647, 3147483647}));
+                CHECK(json::from_bjdata(v_L) == json({9223372036854775807, 9223372036854775807}));
+                CHECK(json::from_bjdata(v_M) == json({10223372036854775807ull, 10223372036854775807ull}));
+                CHECK(json::from_bjdata(v_D) == json({3.1415926, 3.1415926}));
+                CHECK(json::from_bjdata(v_S) == json({"a", "a"}));
+                CHECK(json::from_bjdata(v_C) == json({"a", "a"}));
+            }
+
+            SECTION("optimized ndarray (type and vector-size ndarray with JData annotations)")
+            {
+                // create vector with 0, 1, 2 elements of the same type
+                std::vector<uint8_t> const v_e = {'[', '$', 'U', '#', '[', '$', 'i', '#', 'i', 2, 2, 1, 0xFE, 0xFF};
+                std::vector<uint8_t> const v_U = {'[', '$', 'U', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06};
+                std::vector<uint8_t> const v_i = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06};
+                std::vector<uint8_t> const v_u = {'[', '$', 'u', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05, 0x00, 0x06, 0x00};
+                std::vector<uint8_t> const v_I = {'[', '$', 'I', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05, 0x00, 0x06, 0x00};
+                std::vector<uint8_t> const v_m = {'[', '$', 'm', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00};
+                std::vector<uint8_t> const v_l = {'[', '$', 'l', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00};
+                std::vector<uint8_t> const v_M = {'[', '$', 'M', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+                std::vector<uint8_t> const v_L = {'[', '$', 'L', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+                std::vector<uint8_t> const v_d = {'[', '$', 'd', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x00, 0x00, 0x80, 0x3F, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40, 0x40, 0x00, 0x00, 0x80, 0x40, 0x00, 0x00, 0xA0, 0x40, 0x00, 0x00, 0xC0, 0x40};
+                std::vector<uint8_t> const v_D = {'[', '$', 'D', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x40};
+                std::vector<uint8_t> const v_C = {'[', '$', 'C', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 'a', 'b', 'c', 'd', 'e', 'f'};
+
+                // check if vector is parsed correctly
+                CHECK(json::from_bjdata(v_e) == json({{"_ArrayData_", {254, 255}}, {"_ArraySize_", {2, 1}}, {"_ArrayType_", "uint8"}}));
+                CHECK(json::from_bjdata(v_U) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "uint8"}}));
+                CHECK(json::from_bjdata(v_i) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "int8"}}));
+                CHECK(json::from_bjdata(v_i) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "int8"}}));
+                CHECK(json::from_bjdata(v_u) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "uint16"}}));
+                CHECK(json::from_bjdata(v_I) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "int16"}}));
+                CHECK(json::from_bjdata(v_m) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "uint32"}}));
+                CHECK(json::from_bjdata(v_l) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "int32"}}));
+                CHECK(json::from_bjdata(v_M) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "uint64"}}));
+                CHECK(json::from_bjdata(v_L) == json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "int64"}}));
+                CHECK(json::from_bjdata(v_d) == json({{"_ArrayData_", {1.f, 2.f, 3.f, 4.f, 5.f, 6.f}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "single"}}));
+                CHECK(json::from_bjdata(v_D) == json({{"_ArrayData_", {1., 2., 3., 4., 5., 6.}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "double"}}));
+                CHECK(json::from_bjdata(v_C) == json({{"_ArrayData_", {'a', 'b', 'c', 'd', 'e', 'f'}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "char"}}));
+
+                // roundtrip: output should be optimized
+                CHECK(json::to_bjdata(json::from_bjdata(v_e), true, true) == v_e);
+                CHECK(json::to_bjdata(json::from_bjdata(v_U), true, true) == v_U);
+                CHECK(json::to_bjdata(json::from_bjdata(v_i), true, true) == v_i);
+                CHECK(json::to_bjdata(json::from_bjdata(v_u), true, true) == v_u);
+                CHECK(json::to_bjdata(json::from_bjdata(v_I), true, true) == v_I);
+                CHECK(json::to_bjdata(json::from_bjdata(v_m), true, true) == v_m);
+                CHECK(json::to_bjdata(json::from_bjdata(v_l), true, true) == v_l);
+                CHECK(json::to_bjdata(json::from_bjdata(v_M), true, true) == v_M);
+                CHECK(json::to_bjdata(json::from_bjdata(v_L), true, true) == v_L);
+                CHECK(json::to_bjdata(json::from_bjdata(v_d), true, true) == v_d);
+                CHECK(json::to_bjdata(json::from_bjdata(v_D), true, true) == v_D);
+                CHECK(json::to_bjdata(json::from_bjdata(v_C), true, true) == v_C);
+            }
+
+            SECTION("optimized ndarray (type and vector-size as 1D array)")
+            {
+                // create vector with two elements of the same type
+                std::vector<uint8_t> const v_0 = {'[', '$', 'i', '#', '[', ']'};
+                std::vector<uint8_t> const v_E = {'[', '$', 'i', '#', '[', 'i', 2, 'i', 0, ']'};
+                std::vector<uint8_t> const v_i = {'[', '$', 'i', '#', '[', 'i', 1, 'i', 2, ']', 0x7F, 0x7F};
+                std::vector<uint8_t> const v_U = {'[', '$', 'U', '#', '[', 'i', 1, 'i', 2, ']', 0xFF, 0xFF};
+                std::vector<uint8_t> const v_I = {'[', '$', 'I', '#', '[', 'i', 1, 'i', 2, ']', 0xFF, 0x7F, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_u = {'[', '$', 'u', '#', '[', 'i', 1, 'i', 2, ']', 0x0F, 0xA7, 0x0F, 0xA7};
+                std::vector<uint8_t> const v_l = {'[', '$', 'l', '#', '[', 'i', 1, 'i', 2, ']', 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_m = {'[', '$', 'm', '#', '[', 'i', 1, 'i', 2, ']', 0xFF, 0xC9, 0x9A, 0xBB, 0xFF, 0xC9, 0x9A, 0xBB};
+                std::vector<uint8_t> const v_L = {'[', '$', 'L', '#', '[', 'i', 1, 'i', 2, ']', 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_M = {'[', '$', 'M', '#', '[', 'i', 1, 'i', 2, ']', 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D, 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D};
+                std::vector<uint8_t> const v_D = {'[', '$', 'D', '#', '[', 'i', 1, 'i', 2, ']', 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40, 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40};
+                std::vector<uint8_t> const v_S = {'[', '#', '[', 'i', 1, 'i', 2, ']', 'S', 'i', 1, 'a', 'S', 'i', 1, 'a'};
+                std::vector<uint8_t> const v_C = {'[', '$', 'C', '#', '[', 'i', 1, 'i', 2, ']', 'a', 'a'};
+                std::vector<uint8_t> const v_R = {'[', '#', '[', 'i', 2, ']', 'i', 6, 'U', 7};
+
+                // check if vector is parsed correctly
+                CHECK(json::from_bjdata(v_0) == json::array());
+                CHECK(json::from_bjdata(v_E) == json::array());
+                CHECK(json::from_bjdata(v_i) == json({127, 127}));
+                CHECK(json::from_bjdata(v_U) == json({255, 255}));
+                CHECK(json::from_bjdata(v_I) == json({32767, 32767}));
+                CHECK(json::from_bjdata(v_u) == json({42767, 42767}));
+                CHECK(json::from_bjdata(v_l) == json({2147483647, 2147483647}));
+                CHECK(json::from_bjdata(v_m) == json({3147483647, 3147483647}));
+                CHECK(json::from_bjdata(v_L) == json({9223372036854775807, 9223372036854775807}));
+                CHECK(json::from_bjdata(v_M) == json({10223372036854775807ull, 10223372036854775807ull}));
+                CHECK(json::from_bjdata(v_D) == json({3.1415926, 3.1415926}));
+                CHECK(json::from_bjdata(v_S) == json({"a", "a"}));
+                CHECK(json::from_bjdata(v_C) == json({"a", "a"}));
+                CHECK(json::from_bjdata(v_R) == json({6, 7}));
+            }
+
+            SECTION("optimized ndarray (type and vector-size as size-optimized array)")
+            {
+                // create vector with two elements of the same type
+                std::vector<uint8_t> const v_i = {'[', '$', 'i', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0x7F, 0x7F};
+                std::vector<uint8_t> const v_U = {'[', '$', 'U', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0xFF, 0xFF};
+                std::vector<uint8_t> const v_I = {'[', '$', 'I', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0xFF, 0x7F, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_u = {'[', '$', 'u', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0x0F, 0xA7, 0x0F, 0xA7};
+                std::vector<uint8_t> const v_l = {'[', '$', 'l', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_m = {'[', '$', 'm', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0xFF, 0xC9, 0x9A, 0xBB, 0xFF, 0xC9, 0x9A, 0xBB};
+                std::vector<uint8_t> const v_L = {'[', '$', 'L', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F};
+                std::vector<uint8_t> const v_M = {'[', '$', 'M', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D, 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D};
+                std::vector<uint8_t> const v_D = {'[', '$', 'D', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40, 0x4a, 0xd8, 0x12, 0x4d, 0xfb, 0x21, 0x09, 0x40};
+                std::vector<uint8_t> const v_S = {'[', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 'S', 'i', 1, 'a', 'S', 'i', 1, 'a'};
+                std::vector<uint8_t> const v_C = {'[', '$', 'C', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2, 'a', 'a'};
+
+                // check if vector is parsed correctly
+                CHECK(json::from_bjdata(v_i) == json({127, 127}));
+                CHECK(json::from_bjdata(v_U) == json({255, 255}));
+                CHECK(json::from_bjdata(v_I) == json({32767, 32767}));
+                CHECK(json::from_bjdata(v_u) == json({42767, 42767}));
+                CHECK(json::from_bjdata(v_l) == json({2147483647, 2147483647}));
+                CHECK(json::from_bjdata(v_m) == json({3147483647, 3147483647}));
+                CHECK(json::from_bjdata(v_L) == json({9223372036854775807, 9223372036854775807}));
+                CHECK(json::from_bjdata(v_M) == json({10223372036854775807ull, 10223372036854775807ull}));
+                CHECK(json::from_bjdata(v_D) == json({3.1415926, 3.1415926}));
+                CHECK(json::from_bjdata(v_S) == json({"a", "a"}));
+                CHECK(json::from_bjdata(v_C) == json({"a", "a"}));
+            }
+
+            SECTION("invalid ndarray annotations remains as object")
+            {
+                // check if invalid ND array annotations stay as object
+                json j_type = json({{"_ArrayData_", {1, 2, 3, 4, 5, 6}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "invalidtype"}});
+                json j_size = json({{"_ArrayData_", {1, 2, 3, 4, 5}}, {"_ArraySize_", {2, 3}}, {"_ArrayType_", "uint8"}});
+
+                // roundtrip: output should stay as object
+                CHECK(json::from_bjdata(json::to_bjdata(j_type), true, true) == j_type);
+                CHECK(json::from_bjdata(json::to_bjdata(j_size), true, true) == j_size);
+            }
+        }
+    }
+
+    SECTION("parse errors")
+    {
+        SECTION("empty byte vector")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(std::vector<uint8_t>()),
+                                 "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+        }
+
+        SECTION("char")
+        {
+            SECTION("eof after C byte")
+            {
+                std::vector<uint8_t> const v = {'C'};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing BJData char: unexpected end of input", json::parse_error&);
+            }
+
+            SECTION("byte out of range")
+            {
+                std::vector<uint8_t> const v = {'C', 130};
+                json _;
+                CHECK_THROWS_WITH(_ = json::from_bjdata(v), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing BJData char: byte after 'C' must be in range 0x00..0x7F; last byte: 0x82");
+            }
+        }
+
+        SECTION("strings")
+        {
+            SECTION("eof after S byte")
+            {
+                std::vector<uint8_t> const v = {'S'};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            }
+
+            SECTION("invalid byte")
+            {
+                std::vector<uint8_t> const v = {'S', '1', 'a'};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing BJData string: expected length type specification (U, i, u, I, m, l, M, L); last byte: 0x31", json::parse_error&);
+            }
+
+            SECTION("parse bjdata markers in ubjson")
+            {
+                // create a single-character string for all number types
+                std::vector<uint8_t> const s_u = {'S', 'u', 1, 0, 'a'};
+                std::vector<uint8_t> const s_m = {'S', 'm', 1, 0, 0, 0, 'a'};
+                std::vector<uint8_t> const s_M = {'S', 'M', 1, 0, 0, 0, 0, 0, 0, 0, 'a'};
+
+                json _;
+                // check if string is parsed correctly to "a"
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(s_u), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON string: expected length type specification (U, i, I, l, L); last byte: 0x75", json::parse_error&);
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(s_m), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON string: expected length type specification (U, i, I, l, L); last byte: 0x6D", json::parse_error&);
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(s_M), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON string: expected length type specification (U, i, I, l, L); last byte: 0x4D", json::parse_error&);
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("optimized array: no size following type")
+            {
+                std::vector<uint8_t> const v = {'[', '$', 'i', 2};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.112] parse error at byte 4: syntax error while parsing BJData size: expected '#' after type information; last byte: 0x02", json::parse_error&);
+            }
+
+            SECTION("optimized array: negative size")
+            {
+                std::vector<uint8_t> const v1 = {'[', '#', 'i', 0xF1};
+                std::vector<uint8_t> const v2 = {'[', '$', 'I', '#', 'i', 0xF2};
+                std::vector<uint8_t> const v3 = {'[', '$', 'I', '#', '[', 'i', 0xF4, 'i', 0x02, ']'};
+                std::vector<uint8_t> const v4 = {'[', '$', 0xF6, '#', 'i', 0xF7};
+                std::vector<uint8_t> const v5 = {'[', '$', 'I', '#', '[', 'i', 0xF5, 'i', 0xF1, ']'};
+                std::vector<uint8_t> const v6 = {'[', '#', '[', 'i', 0xF3, 'i', 0x02, ']'};
+
+                std::vector<uint8_t> const vI = {'[', '#', 'I', 0x00, 0xF1};
+                std::vector<uint8_t> const vl = {'[', '#', 'l', 0x00, 0x00, 0x00, 0xF2};
+                std::vector<uint8_t> const vL = {'[', '#', 'L', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF3};
+                std::vector<uint8_t> const vM = {'[', '$', 'M', '#', '[', 'I', 0x00, 0x20, 'M', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xFF, ']'};
+                std::vector<uint8_t> const vMX = {'[', '$', 'U', '#', '[', 'M', 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 'U', 0x01, ']'};
+
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v1), "[json.exception.parse_error.113] parse error at byte 4: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(v1, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v2), "[json.exception.parse_error.113] parse error at byte 6: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(v2, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v3), "[json.exception.parse_error.113] parse error at byte 7: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(v3, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v4), "[json.exception.parse_error.113] parse error at byte 6: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(v4, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v5), "[json.exception.parse_error.113] parse error at byte 7: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(v5, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v6), "[json.exception.parse_error.113] parse error at byte 5: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(v6, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vI), "[json.exception.parse_error.113] parse error at byte 5: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(vI, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vl), "[json.exception.parse_error.113] parse error at byte 7: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(vl, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vL), "[json.exception.parse_error.113] parse error at byte 11: syntax error while parsing BJData size: count in an optimized container must be positive", json::parse_error&);
+                CHECK(json::from_bjdata(vL, true, false).is_discarded());
+
+#if SIZE_MAX != 0xffffffff
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.out_of_range.408] syntax error while parsing BJData size: excessive ndarray size caused overflow", json::out_of_range&);
+#else
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+#endif
+                CHECK(json::from_bjdata(vM, true, false).is_discarded());
+
+#if SIZE_MAX != 0xffffffff
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vMX), "[json.exception.out_of_range.408] syntax error while parsing BJData size: excessive ndarray size caused overflow", json::out_of_range&);
+#else
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vMX), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+#endif
+                CHECK(json::from_bjdata(vMX, true, false).is_discarded());
+            }
+
+            SECTION("optimized array: integer value overflow")
+            {
+#if SIZE_MAX == 0xffffffff
+                std::vector<uint8_t> const vL = {'[', '#', 'L', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F};
+                std::vector<uint8_t> const vM = {'[', '$', 'M', '#', '[', 'I', 0x00, 0x20, 'M', 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xFF, ']'};
+
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vL), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK(json::from_bjdata(vL, true, false).is_discarded());
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.out_of_range.408] syntax error while parsing BJData size: integer value overflow", json::out_of_range&);
+                CHECK(json::from_bjdata(vM, true, false).is_discarded());
+#endif
+            }
+
+            SECTION("do not accept NTFZ markers in ndarray optimized type (with count)")
+            {
+                json _;
+                std::vector<uint8_t> const v_N = {'[', '$', 'N', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2};
+                std::vector<uint8_t> const v_T = {'[', '$', 'T', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2};
+                std::vector<uint8_t> const v_F = {'[', '$', 'F', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2};
+                std::vector<uint8_t> const v_Z = {'[', '$', 'Z', '#', '[', '#', 'i', 2, 'i', 1, 'i', 2};
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v_N), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x4E is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v_N, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v_T), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x54 is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v_T, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v_F), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x46 is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v_F, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v_Z), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x5A is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v_Z, true, false).is_discarded());
+            }
+
+            SECTION("do not accept NTFZ markers in ndarray optimized type (without count)")
+            {
+                json _;
+                std::vector<uint8_t> const v_N = {'[', '$', 'N', '#', '[', 'i', 1, 'i', 2, ']'};
+                std::vector<uint8_t> const v_T = {'[', '$', 'T', '#', '[', 'i', 1, 'i', 2, ']'};
+                std::vector<uint8_t> const v_F = {'[', '$', 'F', '#', '[', 'i', 1, 'i', 2, ']'};
+                std::vector<uint8_t> const v_Z = {'[', '$', 'Z', '#', '[', 'i', 1, 'i', 2, ']'};
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v_N), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x4E is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v_N, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v_T), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x54 is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v_T, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v_F), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x46 is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v_F, true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v_Z), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x5A is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v_Z, true, false).is_discarded());
+            }
+        }
+
+        SECTION("strings")
+        {
+            std::vector<uint8_t> const vS = {'S'};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vS), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vS, true, false).is_discarded());
+
+            std::vector<uint8_t> const v = {'S', 'i', '2', 'a'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing BJData string: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(v, true, false).is_discarded());
+
+            std::vector<uint8_t> const vC = {'C'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vC), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing BJData char: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vC, true, false).is_discarded());
+        }
+
+        SECTION("sizes")
+        {
+            std::vector<uint8_t> const vU = {'[', '#', 'U'};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vU), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vU, true, false).is_discarded());
+
+            std::vector<uint8_t> const vi = {'[', '#', 'i'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vi), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vi, true, false).is_discarded());
+
+            std::vector<uint8_t> const vI = {'[', '#', 'I'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vI), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vI, true, false).is_discarded());
+
+            std::vector<uint8_t> const vu = {'[', '#', 'u'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vu), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vu, true, false).is_discarded());
+
+            std::vector<uint8_t> const vl = {'[', '#', 'l'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vl), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vl, true, false).is_discarded());
+
+            std::vector<uint8_t> const vm = {'[', '#', 'm'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vm), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vm, true, false).is_discarded());
+
+            std::vector<uint8_t> const vL = {'[', '#', 'L'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vL), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vL, true, false).is_discarded());
+
+            std::vector<uint8_t> const vM = {'[', '#', 'M'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vM, true, false).is_discarded());
+
+            std::vector<uint8_t> const v0 = {'[', '#', 'T', ']'};
+            CHECK_THROWS_WITH(_ = json::from_bjdata(v0), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing BJData size: expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x54");
+            CHECK(json::from_bjdata(v0, true, false).is_discarded());
+        }
+
+        SECTION("parse bjdata markers as array size in ubjson")
+        {
+            json _;
+            std::vector<uint8_t> const vu = {'[', '#', 'u'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vu), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing UBJSON size: expected length type specification (U, i, I, l, L) after '#'; last byte: 0x75", json::parse_error&);
+            CHECK(json::from_ubjson(vu, true, false).is_discarded());
+
+            std::vector<uint8_t> const vm = {'[', '#', 'm'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vm), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing UBJSON size: expected length type specification (U, i, I, l, L) after '#'; last byte: 0x6D", json::parse_error&);
+            CHECK(json::from_ubjson(vm, true, false).is_discarded());
+
+            std::vector<uint8_t> const vM = {'[', '#', 'M'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vM), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing UBJSON size: expected length type specification (U, i, I, l, L) after '#'; last byte: 0x4D", json::parse_error&);
+            CHECK(json::from_ubjson(vM, true, false).is_discarded());
+
+            std::vector<uint8_t> const v0 = {'[', '#', '['};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v0), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing UBJSON size: expected length type specification (U, i, I, l, L) after '#'; last byte: 0x5B", json::parse_error&);
+            CHECK(json::from_ubjson(v0, true, false).is_discarded());
+        }
+
+        SECTION("types")
+        {
+            std::vector<uint8_t> const v0 = {'[', '$'};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v0), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing BJData type: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(v0, true, false).is_discarded());
+
+            std::vector<uint8_t> const vi = {'[', '$', '#'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vi), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vi, true, false).is_discarded());
+
+            std::vector<uint8_t> const vU = {'[', '$', 'U'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vU), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vU, true, false).is_discarded());
+
+            std::vector<uint8_t> const v1 = {'[', '$', '['};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v1), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x5B is not a permitted optimized array type", json::parse_error&);
+            CHECK(json::from_bjdata(v1, true, false).is_discarded());
+        }
+
+        SECTION("arrays")
+        {
+            std::vector<uint8_t> const vST = {'[', '$', 'i', '#', 'i', 2, 1};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vST), "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vST, true, false).is_discarded());
+
+            std::vector<uint8_t> const vS = {'[', '#', 'i', 2, 'i', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vS), "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vS, true, false).is_discarded());
+
+            std::vector<uint8_t> const v = {'[', 'i', 2, 'i', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(v, true, false).is_discarded());
+        }
+
+        SECTION("ndarrays")
+        {
+            std::vector<uint8_t> const vST = {'[', '$', 'i', '#', '[', '$', 'i', '#'};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vST), "[json.exception.parse_error.113] parse error at byte 9: syntax error while parsing BJData size: expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0xFF", json::parse_error&);
+            CHECK(json::from_bjdata(vST, true, false).is_discarded());
+
+            std::vector<uint8_t> const v = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'i', 2, 1, 2};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.110] parse error at byte 13: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(v, true, false).is_discarded());
+
+            std::vector<uint8_t> const vS0 = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'i', 2, 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vS0), "[json.exception.parse_error.110] parse error at byte 12: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vS0, true, false).is_discarded());
+
+            std::vector<uint8_t> const vS = {'[', '$', 'i', '#', '[', '#', 'i', 2, 1, 2, 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vS), "[json.exception.parse_error.113] parse error at byte 9: syntax error while parsing BJData size: expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x01", json::parse_error&);
+            CHECK(json::from_bjdata(vS, true, false).is_discarded());
+
+            std::vector<uint8_t> const vT = {'[', '$', 'i', '#', '[', 'i', 2, 'i'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vT), "[json.exception.parse_error.110] parse error at byte 9: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vT, true, false).is_discarded());
+
+            std::vector<uint8_t> const vT0 = {'[', '$', 'i', '#', '[', 'i'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vT0), "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vT0, true, false).is_discarded());
+
+            std::vector<uint8_t> const vu = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'u', 1, 0};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vu), "[json.exception.parse_error.110] parse error at byte 12: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vu, true, false).is_discarded());
+
+            std::vector<uint8_t> const vm = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'm', 1, 0, 0, 0};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vm), "[json.exception.parse_error.110] parse error at byte 14: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vm, true, false).is_discarded());
+
+            std::vector<uint8_t> const vM = {'[', '$', 'i', '#', '[', '$', 'i', '#', 'M', 1, 0, 0, 0, 0, 0, 0, 0};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vM), "[json.exception.parse_error.110] parse error at byte 18: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vM, true, false).is_discarded());
+
+            std::vector<uint8_t> const vU = {'[', '$', 'U', '#', '[', '$', 'i', '#', 'i', 2, 2, 3, 1, 2, 3, 4, 5};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vU), "[json.exception.parse_error.110] parse error at byte 18: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vU, true, false).is_discarded());
+
+            std::vector<uint8_t> const vT1 = {'[', '$', 'T', '#', '[', '$', 'i', '#', 'i', 2, 2, 3};
+            CHECK(json::from_bjdata(vT1, true, false).is_discarded());
+
+            std::vector<uint8_t> const vh = {'[', '$', 'h', '#', '[', '$', 'i', '#', 'i', 2, 2, 3};
+            CHECK(json::from_bjdata(vh, true, false).is_discarded());
+
+            std::vector<uint8_t> const vR = {'[', '$', 'i', '#', '[', 'i', 1, '[', ']', ']', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vR), "[json.exception.parse_error.113] parse error at byte 8: syntax error while parsing BJData size: ndarray dimensional vector is not allowed", json::parse_error&);
+            CHECK(json::from_bjdata(vR, true, false).is_discarded());
+
+            std::vector<uint8_t> const vRo = {'[', '$', 'i', '#', '[', 'i', 0, '{', '}', ']', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vRo), "[json.exception.parse_error.113] parse error at byte 8: syntax error while parsing BJData size: expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x7B", json::parse_error&);
+            CHECK(json::from_bjdata(vRo, true, false).is_discarded());
+
+            std::vector<uint8_t> const vR1 = {'[', '$', 'i', '#', '[', '[', 'i', 1, ']', ']', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vR1), "[json.exception.parse_error.113] parse error at byte 6: syntax error while parsing BJData size: ndarray dimensional vector is not allowed", json::parse_error&);
+            CHECK(json::from_bjdata(vR1, true, false).is_discarded());
+
+            std::vector<uint8_t> const vR2 = {'[', '$', 'i', '#', '[', '#', '[', 'i', 1, ']', ']', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vR2), "[json.exception.parse_error.113] parse error at byte 11: syntax error while parsing BJData size: expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x5D", json::parse_error&);
+            CHECK(json::from_bjdata(vR2, true, false).is_discarded());
+
+            std::vector<uint8_t> const vR3 = {'[', '#', '[', 'i', '2', 'i', 2, ']'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vR3), "[json.exception.parse_error.112] parse error at byte 8: syntax error while parsing BJData size: ndarray requires both type and size", json::parse_error&);
+            CHECK(json::from_bjdata(vR3, true, false).is_discarded());
+
+            std::vector<uint8_t> const vR4 = {'[', '$', 'i', '#', '[', '$', 'i', '#', '[', 'i', 1, ']', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vR4), "[json.exception.parse_error.110] parse error at byte 14: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vR4, true, false).is_discarded());
+
+            std::vector<uint8_t> const vR5 = {'[', '$', 'i', '#', '[', '[', '[', ']', ']', ']'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vR5), "[json.exception.parse_error.113] parse error at byte 6: syntax error while parsing BJData size: ndarray dimensional vector is not allowed", json::parse_error&);
+            CHECK(json::from_bjdata(vR5, true, false).is_discarded());
+
+            std::vector<uint8_t> const vR6 = {'[', '$', 'i', '#', '[', '$', 'i', '#', '[', 'i', '2', 'i', 2, ']'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vR6), "[json.exception.parse_error.112] parse error at byte 14: syntax error while parsing BJData size: ndarray can not be recursive", json::parse_error&);
+            CHECK(json::from_bjdata(vR6, true, false).is_discarded());
+
+            std::vector<uint8_t> const vH = {'[', 'H', '[', '#', '[', '$', 'i', '#', '[', 'i', '2', 'i', 2, ']'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vH), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing BJData size: ndarray dimensional vector is not allowed", json::parse_error&);
+            CHECK(json::from_bjdata(vH, true, false).is_discarded());
+        }
+
+        SECTION("objects")
+        {
+            std::vector<uint8_t> const vST = {'{', '$', 'i', '#', 'i', 2, 'i', 1, 'a', 1};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vST), "[json.exception.parse_error.110] parse error at byte 11: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vST, true, false).is_discarded());
+
+            std::vector<uint8_t> const vT = {'{', '$', 'i', 'i', 1, 'a', 1};
+            CHECK_THROWS_WITH(_ = json::from_bjdata(vT), "[json.exception.parse_error.112] parse error at byte 4: syntax error while parsing BJData size: expected '#' after type information; last byte: 0x69");
+            CHECK(json::from_bjdata(vT, true, false).is_discarded());
+
+            std::vector<uint8_t> const vS = {'{', '#', 'i', 2, 'i', 1, 'a', 'i', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vS), "[json.exception.parse_error.110] parse error at byte 10: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vS, true, false).is_discarded());
+
+            std::vector<uint8_t> const v = {'{', 'i', 1, 'a', 'i', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(v, true, false).is_discarded());
+
+            std::vector<uint8_t> const v2 = {'{', 'i', 1, 'a', 'i', 1, 'i'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v2), "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(v2, true, false).is_discarded());
+
+            std::vector<uint8_t> const v3 = {'{', 'i', 1, 'a'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v3), "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(v3, true, false).is_discarded());
+
+            std::vector<uint8_t> const vST1 = {'{', '$', 'd', '#', 'i', 2, 'i', 1, 'a'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vST1), "[json.exception.parse_error.110] parse error at byte 10: syntax error while parsing BJData number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vST1, true, false).is_discarded());
+
+            std::vector<uint8_t> const vST2 = {'{', '#', 'i', 2, 'i', 1, 'a'};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vST2), "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing BJData value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_bjdata(vST2, true, false).is_discarded());
+
+            std::vector<uint8_t> const vO = {'{', '#', '[', 'i', 2, 'i', 1, ']', 'i', 1, 'a', 'i', 1, 'i', 1, 'b', 'i', 2};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vO), "[json.exception.parse_error.112] parse error at byte 8: syntax error while parsing BJData size: ndarray requires both type and size", json::parse_error&);
+            CHECK(json::from_bjdata(vO, true, false).is_discarded());
+
+            std::vector<uint8_t> const vO2 = {'{', '$', 'i', '#', '[', 'i', 2, 'i', 1, ']', 'i', 1, 'a', 1, 'i', 1, 'b', 2};
+            CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vO2), "[json.exception.parse_error.112] parse error at byte 10: syntax error while parsing BJData object: BJData object does not support ND-array size in optimized format", json::parse_error&);
+            CHECK(json::from_bjdata(vO2, true, false).is_discarded());
+        }
+    }
+
+    SECTION("writing optimized values")
+    {
+        SECTION("integer")
+        {
+            SECTION("array of i")
+            {
+                json const j = {1, -1};
+                std::vector<uint8_t> const expected = {'[', '$', 'i', '#', 'i', 2, 1, 0xff};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+            }
+
+            SECTION("array of U")
+            {
+                json const j = {200, 201};
+                std::vector<uint8_t> const expected = {'[', '$', 'U', '#', 'i', 2, 0xC8, 0xC9};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+            }
+
+            SECTION("array of I")
+            {
+                json const j = {30000, -30000};
+                std::vector<uint8_t> const expected = {'[', '$', 'I', '#', 'i', 2, 0x30, 0x75, 0xd0, 0x8a};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+            }
+
+            SECTION("array of u")
+            {
+                json const j = {50000, 50001};
+                std::vector<uint8_t> const expected = {'[', '$', 'u', '#', 'i', 2, 0x50, 0xC3, 0x51, 0xC3};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+            }
+
+            SECTION("array of l")
+            {
+                json const j = {70000, -70000};
+                std::vector<uint8_t> const expected = {'[', '$', 'l', '#', 'i', 2, 0x70, 0x11, 0x01, 0x00, 0x90, 0xEE, 0xFE, 0xFF};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+            }
+
+            SECTION("array of m")
+            {
+                json const j = {3147483647, 3147483648};
+                std::vector<uint8_t> const expected = {'[', '$', 'm', '#', 'i', 2, 0xFF, 0xC9, 0x9A, 0xBB, 0x00, 0xCA, 0x9A, 0xBB};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+            }
+
+            SECTION("array of L")
+            {
+                json const j = {5000000000, -5000000000};
+                std::vector<uint8_t> const expected = {'[', '$', 'L', '#', 'i', 2, 0x00, 0xF2, 0x05, 0x2A, 0x01, 0x00, 0x00, 0x00, 0x00, 0x0E, 0xFA, 0xD5, 0xFE, 0xFF, 0xFF, 0xFF};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+            }
+        }
+
+        SECTION("unsigned integer")
+        {
+            SECTION("array of i")
+            {
+                json const j = {1u, 2u};
+                std::vector<uint8_t> const expected = {'[', '$', 'i', '#', 'i', 2, 1, 2};
+                std::vector<uint8_t> const expected_size = {'[', '#', 'i', 2, 'i', 1, 'i', 2};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+                CHECK(json::to_bjdata(j, true) == expected_size);
+            }
+
+            SECTION("array of U")
+            {
+                json const j = {200u, 201u};
+                std::vector<uint8_t> const expected = {'[', '$', 'U', '#', 'i', 2, 0xC8, 0xC9};
+                std::vector<uint8_t> const expected_size = {'[', '#', 'i', 2, 'U', 0xC8, 'U', 0xC9};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+                CHECK(json::to_bjdata(j, true) == expected_size);
+            }
+
+            SECTION("array of I")
+            {
+                json const j = {30000u, 30001u};
+                std::vector<uint8_t> const expected = {'[', '$', 'I', '#', 'i', 2, 0x30, 0x75, 0x31, 0x75};
+                std::vector<uint8_t> const expected_size = {'[', '#', 'i', 2, 'I', 0x30, 0x75, 'I', 0x31, 0x75};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+                CHECK(json::to_bjdata(j, true) == expected_size);
+            }
+
+            SECTION("array of u")
+            {
+                json const j = {50000u, 50001u};
+                std::vector<uint8_t> const expected = {'[', '$', 'u', '#', 'i', 2, 0x50, 0xC3, 0x51, 0xC3};
+                std::vector<uint8_t> const expected_size = {'[', '#', 'i', 2, 'u', 0x50, 0xC3, 'u', 0x51, 0xC3};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+                CHECK(json::to_bjdata(j, true) == expected_size);
+            }
+
+            SECTION("array of l")
+            {
+                json const j = {70000u, 70001u};
+                std::vector<uint8_t> const expected = {'[', '$', 'l', '#', 'i', 2, 0x70, 0x11, 0x01, 0x00, 0x71, 0x11, 0x01, 0x00};
+                std::vector<uint8_t> const expected_size = {'[', '#', 'i', 2, 'l', 0x70, 0x11, 0x01, 0x00, 'l', 0x71, 0x11, 0x01, 0x00};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+                CHECK(json::to_bjdata(j, true) == expected_size);
+            }
+
+            SECTION("array of m")
+            {
+                json const j = {3147483647u, 3147483648u};
+                std::vector<uint8_t> const expected = {'[', '$', 'm', '#', 'i', 2, 0xFF, 0xC9, 0x9A, 0xBB, 0x00, 0xCA, 0x9A, 0xBB};
+                std::vector<uint8_t> const expected_size = {'[', '#', 'i', 2, 'm', 0xFF, 0xC9, 0x9A, 0xBB, 'm', 0x00, 0xCA, 0x9A, 0xBB};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+                CHECK(json::to_bjdata(j, true) == expected_size);
+            }
+
+            SECTION("array of L")
+            {
+                json const j = {5000000000u, 5000000001u};
+                std::vector<uint8_t> const expected = {'[', '$', 'L', '#', 'i', 2, 0x00, 0xF2, 0x05, 0x2A, 0x01, 0x00, 0x00, 0x00, 0x01, 0xF2, 0x05, 0x2A, 0x01, 0x00, 0x00, 0x00};
+                std::vector<uint8_t> const expected_size = {'[', '#', 'i', 2, 'L', 0x00, 0xF2, 0x05, 0x2A, 0x01, 0x00, 0x00, 0x00, 'L', 0x01, 0xF2, 0x05, 0x2A, 0x01, 0x00, 0x00, 0x00};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+                CHECK(json::to_bjdata(j, true) == expected_size);
+            }
+
+            SECTION("array of M")
+            {
+                json const j = {10223372036854775807ull, 10223372036854775808ull};
+                std::vector<uint8_t> const expected = {'[', '$', 'M', '#', 'i', 2, 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D, 0x00, 0x00, 0x64, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D};
+                std::vector<uint8_t> const expected_size = {'[', '#', 'i', 2, 'M', 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D, 'M', 0x00, 0x00, 0x64, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D};
+                CHECK(json::to_bjdata(j, true, true) == expected);
+                CHECK(json::to_bjdata(j, true) == expected_size);
+            }
+        }
+    }
+}
+
+TEST_CASE("Universal Binary JSON Specification Examples 1")
+{
+    SECTION("Null Value")
+    {
+        json const j = {{"passcode", nullptr}};
+        std::vector<uint8_t> v = {'{', 'i', 8, 'p', 'a', 's', 's', 'c', 'o', 'd', 'e', 'Z', '}'};
+        CHECK(json::to_bjdata(j) == v);
+        CHECK(json::from_bjdata(v) == j);
+    }
+
+    SECTION("No-Op Value")
+    {
+        json const j = {"foo", "bar", "baz"};
+        std::vector<uint8_t> v = {'[', 'S', 'i', 3, 'f', 'o', 'o',
+                                  'S', 'i', 3, 'b', 'a', 'r',
+                                  'S', 'i', 3, 'b', 'a', 'z', ']'
+                                 };
+        std::vector<uint8_t> const v2 = {'[', 'S', 'i', 3, 'f', 'o', 'o', 'N',
+                                         'S', 'i', 3, 'b', 'a', 'r', 'N', 'N', 'N',
+                                         'S', 'i', 3, 'b', 'a', 'z', 'N', 'N', ']'
+                                        };
+        CHECK(json::to_bjdata(j) == v);
+        CHECK(json::from_bjdata(v) == j);
+        CHECK(json::from_bjdata(v2) == j);
+    }
+
+    SECTION("Boolean Types")
+    {
+        json const j = {{"authorized", true}, {"verified", false}};
+        std::vector<uint8_t> v = {'{', 'i', 10, 'a', 'u', 't', 'h', 'o', 'r', 'i', 'z', 'e', 'd', 'T',
+                                  'i', 8, 'v', 'e', 'r', 'i', 'f', 'i', 'e', 'd', 'F', '}'
+                                 };
+        CHECK(json::to_bjdata(j) == v);
+        CHECK(json::from_bjdata(v) == j);
+    }
+
+    SECTION("Numeric Types")
+    {
+        json j =
+        {
+            {"int8", 16},
+            {"uint8", 255},
+            {"int16", 32767},
+            {"uint16", 42767},
+            {"int32", 2147483647},
+            {"uint32", 3147483647},
+            {"int64", 9223372036854775807},
+            {"uint64", 10223372036854775807ull},
+            {"float64", 113243.7863123}
+        };
+        std::vector<uint8_t> v = {'{',
+                                  'i', 7, 'f', 'l', 'o', 'a', 't', '6', '4', 'D', 0xcf, 0x34, 0xbc, 0x94, 0xbc, 0xa5, 0xfb, 0x40,
+                                  'i', 5, 'i', 'n', 't', '1', '6', 'I', 0xff, 0x7f,
+                                  'i', 5, 'i', 'n', 't', '3', '2', 'l', 0xff, 0xff, 0xff, 0x7f,
+                                  'i', 5, 'i', 'n', 't', '6', '4', 'L', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f,
+                                  'i', 4, 'i', 'n', 't', '8', 'i', 16,
+                                  'i', 6, 'u', 'i', 'n', 't', '1', '6', 'u', 0x0F, 0xA7,
+                                  'i', 6, 'u', 'i', 'n', 't', '3', '2', 'm', 0xFF, 0xC9, 0x9A, 0xBB,
+                                  'i', 6, 'u', 'i', 'n', 't', '6', '4', 'M', 0xFF, 0xFF, 0x63, 0xA7, 0xB3, 0xB6, 0xE0, 0x8D,
+                                  'i', 5, 'u', 'i', 'n', 't', '8', 'U', 0xff,
+                                  '}'
+                                 };
+        CHECK(json::to_bjdata(j) == v);
+        CHECK(json::from_bjdata(v) == j);
+    }
+
+    SECTION("Char Type")
+    {
+        json const j = {{"rolecode", "a"}, {"delim", ";"}};
+        std::vector<uint8_t> const v = {'{', 'i', 5, 'd', 'e', 'l', 'i', 'm', 'C', ';', 'i', 8, 'r', 'o', 'l', 'e', 'c', 'o', 'd', 'e', 'C', 'a', '}'};
+        //CHECK(json::to_bjdata(j) == v);
+        CHECK(json::from_bjdata(v) == j);
+    }
+
+    SECTION("String Type")
+    {
+        SECTION("English")
+        {
+            json const j = "hello";
+            std::vector<uint8_t> v = {'S', 'i', 5, 'h', 'e', 'l', 'l', 'o'};
+            CHECK(json::to_bjdata(j) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+
+        SECTION("Russian")
+        {
+            json const j = "привет";
+            std::vector<uint8_t> v = {'S', 'i', 12, 0xD0, 0xBF, 0xD1, 0x80, 0xD0, 0xB8, 0xD0, 0xB2, 0xD0, 0xB5, 0xD1, 0x82};
+            CHECK(json::to_bjdata(j) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+
+        SECTION("Russian")
+        {
+            json const j = "مرحبا";
+            std::vector<uint8_t> v = {'S', 'i', 10, 0xD9, 0x85, 0xD8, 0xB1, 0xD8, 0xAD, 0xD8, 0xA8, 0xD8, 0xA7};
+            CHECK(json::to_bjdata(j) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+    }
+
+    SECTION("Array Type")
+    {
+        SECTION("size=false type=false")
+        {
+            // note the float has been replaced by a double
+            json const j = {nullptr, true, false, 4782345193, 153.132, "ham"};
+            std::vector<uint8_t> v = {'[', 'Z', 'T', 'F', 'L', 0xE9, 0xCB, 0x0C, 0x1D, 0x01, 0x00, 0x00, 0x00, 'D', 0x4e, 0x62, 0x10, 0x58, 0x39, 0x24, 0x63, 0x40, 'S', 'i', 3, 'h', 'a', 'm', ']'};
+            CHECK(json::to_bjdata(j) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+
+        SECTION("size=true type=false")
+        {
+            // note the float has been replaced by a double
+            json const j = {nullptr, true, false, 4782345193, 153.132, "ham"};
+            std::vector<uint8_t> v = {'[', '#', 'i', 6, 'Z', 'T', 'F', 'L', 0xE9, 0xCB, 0x0C, 0x1D, 0x01, 0x00, 0x00, 0x00, 'D', 0x4e, 0x62, 0x10, 0x58, 0x39, 0x24, 0x63, 0x40, 'S', 'i', 3, 'h', 'a', 'm'};
+            CHECK(json::to_bjdata(j, true) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+
+        SECTION("size=true type=true")
+        {
+            // note the float has been replaced by a double
+            json const j = {nullptr, true, false, 4782345193, 153.132, "ham"};
+            std::vector<uint8_t> v = {'[', '#', 'i', 6, 'Z', 'T', 'F', 'L', 0xE9, 0xCB, 0x0C, 0x1D, 0x01, 0x00, 0x00, 0x00, 'D', 0x4e, 0x62, 0x10, 0x58, 0x39, 0x24, 0x63, 0x40, 'S', 'i', 3, 'h', 'a', 'm'};
+            CHECK(json::to_bjdata(j, true, true) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+    }
+
+    SECTION("Object Type")
+    {
+        SECTION("size=false type=false")
+        {
+            json j =
+            {
+                {
+                    "post", {
+                        {"id", 1137},
+                        {"author", "rkalla"},
+                        {"timestamp", 1364482090592},
+                        {"body", "I totally agree!"}
+                    }
+                }
+            };
+            std::vector<uint8_t> v = {'{', 'i', 4, 'p', 'o', 's', 't', '{',
+                                      'i', 6, 'a', 'u', 't', 'h', 'o', 'r', 'S', 'i', 6, 'r', 'k', 'a', 'l', 'l', 'a',
+                                      'i', 4, 'b', 'o', 'd', 'y', 'S', 'i', 16, 'I', ' ', 't', 'o', 't', 'a', 'l', 'l', 'y', ' ', 'a', 'g', 'r', 'e', 'e', '!',
+                                      'i', 2, 'i', 'd', 'I', 0x71, 0x04,
+                                      'i', 9, 't', 'i', 'm', 'e', 's', 't', 'a', 'm', 'p', 'L', 0x60, 0x66, 0x78, 0xB1, 0x3D, 0x01, 0x00, 0x00,
+                                      '}', '}'
+                                     };
+            CHECK(json::to_bjdata(j) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+
+        SECTION("size=true type=false")
+        {
+            json j =
+            {
+                {
+                    "post", {
+                        {"id", 1137},
+                        {"author", "rkalla"},
+                        {"timestamp", 1364482090592},
+                        {"body", "I totally agree!"}
+                    }
+                }
+            };
+            std::vector<uint8_t> v = {'{', '#', 'i', 1, 'i', 4, 'p', 'o', 's', 't', '{', '#', 'i', 4,
+                                      'i', 6, 'a', 'u', 't', 'h', 'o', 'r', 'S', 'i', 6, 'r', 'k', 'a', 'l', 'l', 'a',
+                                      'i', 4, 'b', 'o', 'd', 'y', 'S', 'i', 16, 'I', ' ', 't', 'o', 't', 'a', 'l', 'l', 'y', ' ', 'a', 'g', 'r', 'e', 'e', '!',
+                                      'i', 2, 'i', 'd', 'I', 0x71, 0x04,
+                                      'i', 9, 't', 'i', 'm', 'e', 's', 't', 'a', 'm', 'p', 'L', 0x60, 0x66, 0x78, 0xB1, 0x3D, 0x01, 0x00, 0x00,
+                                     };
+            CHECK(json::to_bjdata(j, true) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+
+        SECTION("size=true type=true")
+        {
+            json j =
+            {
+                {
+                    "post", {
+                        {"id", 1137},
+                        {"author", "rkalla"},
+                        {"timestamp", 1364482090592},
+                        {"body", "I totally agree!"}
+                    }
+                }
+            };
+            std::vector<uint8_t> v = {'{', '#', 'i', 1, 'i', 4, 'p', 'o', 's', 't', '{', '#', 'i', 4,
+                                      'i', 6, 'a', 'u', 't', 'h', 'o', 'r', 'S', 'i', 6, 'r', 'k', 'a', 'l', 'l', 'a',
+                                      'i', 4, 'b', 'o', 'd', 'y', 'S', 'i', 16, 'I', ' ', 't', 'o', 't', 'a', 'l', 'l', 'y', ' ', 'a', 'g', 'r', 'e', 'e', '!',
+                                      'i', 2, 'i', 'd', 'I', 0x71, 0x04,
+                                      'i', 9, 't', 'i', 'm', 'e', 's', 't', 'a', 'm', 'p', 'L', 0x60, 0x66, 0x78, 0xB1, 0x3D, 0x01, 0x00, 0x00,
+                                     };
+            CHECK(json::to_bjdata(j, true, true) == v);
+            CHECK(json::from_bjdata(v) == j);
+        }
+    }
+
+    SECTION("Optimized Format")
+    {
+        SECTION("Array Example")
+        {
+            SECTION("No Optimization")
+            {
+                // note the floats have been replaced by doubles
+                json const j = {29.97, 31.13, 67.0, 2.113, 23.888};
+                std::vector<uint8_t> v = {'[',
+                                          'D', 0xb8, 0x1e, 0x85, 0xeb, 0x51, 0xf8, 0x3d, 0x40,
+                                          'D', 0xe1, 0x7a, 0x14, 0xae, 0x47, 0x21, 0x3f, 0x40,
+                                          'D', 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x50, 0x40,
+                                          'D', 0x81, 0x95, 0x43, 0x8b, 0x6c, 0xe7, 0x00, 0x40,
+                                          'D', 0x17, 0xd9, 0xce, 0xf7, 0x53, 0xe3, 0x37, 0x40,
+                                          ']'
+                                         };
+                CHECK(json::to_bjdata(j) == v);
+                CHECK(json::from_bjdata(v) == j);
+            }
+
+            SECTION("Optimized with count")
+            {
+                // note the floats have been replaced by doubles
+                json const j = {29.97, 31.13, 67.0, 2.113, 23.888};
+                std::vector<uint8_t> v = {'[', '#', 'i', 5,
+                                          'D', 0xb8, 0x1e, 0x85, 0xeb, 0x51, 0xf8, 0x3d, 0x40,
+                                          'D', 0xe1, 0x7a, 0x14, 0xae, 0x47, 0x21, 0x3f, 0x40,
+                                          'D', 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x50, 0x40,
+                                          'D', 0x81, 0x95, 0x43, 0x8b, 0x6c, 0xe7, 0x00, 0x40,
+                                          'D', 0x17, 0xd9, 0xce, 0xf7, 0x53, 0xe3, 0x37, 0x40,
+                                         };
+                CHECK(json::to_bjdata(j, true) == v);
+                CHECK(json::from_bjdata(v) == j);
+            }
+
+            SECTION("Optimized with type & count")
+            {
+                // note the floats have been replaced by doubles
+                json const j = {29.97, 31.13, 67.0, 2.113, 23.888};
+                std::vector<uint8_t> v = {'[', '$', 'D', '#', 'i', 5,
+                                          0xb8, 0x1e, 0x85, 0xeb, 0x51, 0xf8, 0x3d, 0x40,
+                                          0xe1, 0x7a, 0x14, 0xae, 0x47, 0x21, 0x3f, 0x40,
+                                          0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x50, 0x40,
+                                          0x81, 0x95, 0x43, 0x8b, 0x6c, 0xe7, 0x00, 0x40,
+                                          0x17, 0xd9, 0xce, 0xf7, 0x53, 0xe3, 0x37, 0x40,
+                                         };
+                CHECK(json::to_bjdata(j, true, true) == v);
+                CHECK(json::from_bjdata(v) == j);
+            }
+        }
+
+        SECTION("Object Example")
+        {
+            SECTION("No Optimization")
+            {
+                // note the floats have been replaced by doubles
+                json const j = { {"lat", 29.976}, {"long", 31.131}, {"alt", 67.0} };
+                std::vector<uint8_t> v = {'{',
+                                          'i', 3, 'a', 'l', 't', 'D',      0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x50, 0x40,
+                                          'i', 3, 'l', 'a', 't', 'D',      0x60, 0xe5, 0xd0, 0x22, 0xdb, 0xf9, 0x3d, 0x40,
+                                          'i', 4, 'l', 'o', 'n', 'g', 'D', 0xa8, 0xc6, 0x4b, 0x37, 0x89, 0x21, 0x3f, 0x40,
+                                          '}'
+                                         };
+                CHECK(json::to_bjdata(j) == v);
+                CHECK(json::from_bjdata(v) == j);
+            }
+
+            SECTION("Optimized with count")
+            {
+                // note the floats have been replaced by doubles
+                json const j = { {"lat", 29.976}, {"long", 31.131}, {"alt", 67.0} };
+                std::vector<uint8_t> v = {'{', '#', 'i', 3,
+                                          'i', 3, 'a', 'l', 't', 'D',      0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x50, 0x40,
+                                          'i', 3, 'l', 'a', 't', 'D',      0x60, 0xe5, 0xd0, 0x22, 0xdb, 0xf9, 0x3d, 0x40,
+                                          'i', 4, 'l', 'o', 'n', 'g', 'D', 0xa8, 0xc6, 0x4b, 0x37, 0x89, 0x21, 0x3f, 0x40,
+                                         };
+                CHECK(json::to_bjdata(j, true) == v);
+                CHECK(json::from_bjdata(v) == j);
+            }
+
+            SECTION("Optimized with type & count")
+            {
+                // note the floats have been replaced by doubles
+                json const j = { {"lat", 29.976}, {"long", 31.131}, {"alt", 67.0} };
+                std::vector<uint8_t> v = {'{', '$', 'D', '#', 'i', 3,
+                                          'i', 3, 'a', 'l', 't',      0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x50, 0x40,
+                                          'i', 3, 'l', 'a', 't',      0x60, 0xe5, 0xd0, 0x22, 0xdb, 0xf9, 0x3d, 0x40,
+                                          'i', 4, 'l', 'o', 'n', 'g', 0xa8, 0xc6, 0x4b, 0x37, 0x89, 0x21, 0x3f, 0x40,
+                                         };
+                CHECK(json::to_bjdata(j, true, true) == v);
+                CHECK(json::from_bjdata(v) == j);
+            }
+        }
+
+        SECTION("Special Cases (Null, No-Op and Boolean)")
+        {
+            SECTION("Array")
+            {
+                json _;
+                std::vector<uint8_t> const v = {'[', '$', 'N', '#', 'I', 0x00, 0x02};
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x4E is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v, true, false).is_discarded());
+            }
+
+            SECTION("Object")
+            {
+                json _;
+                std::vector<uint8_t> const v = {'{', '$', 'Z', '#', 'i', 3, 'i', 4, 'n', 'a', 'm', 'e', 'i', 8, 'p', 'a', 's', 's', 'w', 'o', 'r', 'd', 'i', 5, 'e', 'm', 'a', 'i', 'l'};
+                CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.112] parse error at byte 3: syntax error while parsing BJData type: marker 0x5A is not a permitted optimized array type", json::parse_error&);
+                CHECK(json::from_bjdata(v, true, false).is_discarded());
+            }
+        }
+    }
+}
+
+#if !defined(JSON_NOEXCEPTION)
+TEST_CASE("all BJData first bytes")
+{
+    // these bytes will fail immediately with exception parse_error.112
+    std::set<uint8_t> supported =
+    {
+        'T', 'F', 'Z', 'U', 'i', 'I', 'l', 'L', 'd', 'D', 'C', 'S', '[', '{', 'N', 'H', 'u', 'm', 'M', 'h'
+    };
+
+    for (auto i = 0; i < 256; ++i)
+    {
+        const auto byte = static_cast<uint8_t>(i);
+        CAPTURE(byte)
+
+        try
+        {
+            auto res = json::from_bjdata(std::vector<uint8_t>(1, byte));
+        }
+        catch (const json::parse_error& e)
+        {
+            // check that parse_error.112 is only thrown if the
+            // first byte is not in the supported set
+            INFO_WITH_TEMP(e.what());
+            if (supported.find(byte) == supported.end())
+            {
+                CHECK(e.id == 112);
+            }
+            else
+            {
+                CHECK(e.id != 112);
+            }
+        }
+    }
+}
+#endif
+
+TEST_CASE("BJData roundtrips" * doctest::skip())
+{
+    SECTION("input from self-generated BJData files")
+    {
+        for (const std::string filename :
+                {
+                    TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json",
+                    TEST_DATA_DIRECTORY "/json.org/1.json",
+                    TEST_DATA_DIRECTORY "/json.org/2.json",
+                    TEST_DATA_DIRECTORY "/json.org/3.json",
+                    TEST_DATA_DIRECTORY "/json.org/4.json",
+                    TEST_DATA_DIRECTORY "/json.org/5.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip01.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip02.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip03.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip04.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip05.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip06.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip07.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip08.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip09.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip10.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip11.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip12.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip13.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip14.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip15.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip16.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip17.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip18.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip19.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip20.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip21.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip22.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip23.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip24.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip25.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip26.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip27.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip28.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip29.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip30.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip31.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip32.json",
+                    TEST_DATA_DIRECTORY "/json_testsuite/sample.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass1.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass2.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass3.json"
+                })
+        {
+            CAPTURE(filename)
+
+            {
+                INFO_WITH_TEMP(filename + ": std::vector<uint8_t>");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse BJData file
+                auto packed = utils::read_binary_file(filename + ".bjdata");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_bjdata(packed));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": std::ifstream");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse BJData file
+                std::ifstream f_bjdata(filename + ".bjdata", std::ios::binary);
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_bjdata(f_bjdata));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": output to output adapters");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json const j1 = json::parse(f_json);
+
+                // parse BJData file
+                auto packed = utils::read_binary_file(filename + ".bjdata");
+
+                {
+                    INFO_WITH_TEMP(filename + ": output adapters: std::vector<uint8_t>");
+                    std::vector<uint8_t> vec;
+                    json::to_bjdata(j1, vec);
+                    CHECK(vec == packed);
+                }
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-bson.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-bson.cpp
new file mode 100644
index 00000000..96188108
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-bson.cpp
@@ -0,0 +1,1298 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <limits>
+#include <sstream>
+#include "make_test_data_available.hpp"
+#include "test_utils.hpp"
+
+TEST_CASE("BSON")
+{
+    SECTION("individual values not supported")
+    {
+        SECTION("null")
+        {
+            json const j = nullptr;
+            CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is null", json::type_error&);
+        }
+
+        SECTION("boolean")
+        {
+            SECTION("true")
+            {
+                json const j = true;
+                CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is boolean", json::type_error&);
+            }
+
+            SECTION("false")
+            {
+                json const j = false;
+                CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is boolean", json::type_error&);
+            }
+        }
+
+        SECTION("number")
+        {
+            json const j = 42;
+            CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is number", json::type_error&);
+        }
+
+        SECTION("float")
+        {
+            json const j = 4.2;
+            CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is number", json::type_error&);
+        }
+
+        SECTION("string")
+        {
+            json const j = "not supported";
+            CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is string", json::type_error&);
+        }
+
+        SECTION("array")
+        {
+            json const j = std::vector<int> {1, 2, 3, 4, 5, 6, 7};
+            CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.type_error.317] to serialize to BSON, top-level type must be object, but is array", json::type_error&);
+        }
+    }
+
+    SECTION("keys containing code-point U+0000 cannot be serialized to BSON")
+    {
+        json const j =
+        {
+            { std::string("en\0try", 6), true }
+        };
+#if JSON_DIAGNOSTICS
+        CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.out_of_range.409] (/en) BSON key cannot contain code point U+0000 (at byte 2)", json::out_of_range&);
+#else
+        CHECK_THROWS_WITH_AS(json::to_bson(j), "[json.exception.out_of_range.409] BSON key cannot contain code point U+0000 (at byte 2)", json::out_of_range&);
+#endif
+    }
+
+    SECTION("string length must be at least 1")
+    {
+        // from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11175
+        std::vector<std::uint8_t> const v =
+        {
+            0x20, 0x20, 0x20, 0x20,
+            0x02,
+            0x00,
+            0x00, 0x00, 0x00, 0x80
+        };
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_bson(v), "[json.exception.parse_error.112] parse error at byte 10: syntax error while parsing BSON string: string length must be at least 1, is -2147483648", json::parse_error&);
+    }
+
+    SECTION("objects")
+    {
+        SECTION("empty object")
+        {
+            json const j = json::object();
+            std::vector<std::uint8_t> const expected =
+            {
+                0x05, 0x00, 0x00, 0x00, // size (little endian)
+                // no entries
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with bool")
+        {
+            json const j =
+            {
+                { "entry", true }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x0D, 0x00, 0x00, 0x00, // size (little endian)
+                0x08,               // entry: boolean
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0x01,           // value = true
+                0x00                    // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with bool")
+        {
+            json const j =
+            {
+                { "entry", false }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x0D, 0x00, 0x00, 0x00, // size (little endian)
+                0x08,               // entry: boolean
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0x00,           // value = false
+                0x00                    // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with double")
+        {
+            json const j =
+            {
+                { "entry", 4.2 }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x14, 0x00, 0x00, 0x00, // size (little endian)
+                0x01, /// entry: double
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0xcd, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x10, 0x40,
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with string")
+        {
+            json const j =
+            {
+                { "entry", "bsonstr" }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x18, 0x00, 0x00, 0x00, // size (little endian)
+                0x02, /// entry: string (UTF-8)
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0x08, 0x00, 0x00, 0x00, 'b', 's', 'o', 'n', 's', 't', 'r', '\x00',
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with null member")
+        {
+            json const j =
+            {
+                { "entry", nullptr }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x0C, 0x00, 0x00, 0x00, // size (little endian)
+                0x0A, /// entry: null
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with integer (32-bit) member")
+        {
+            json const j =
+            {
+                { "entry", std::int32_t{0x12345678} }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x10, 0x00, 0x00, 0x00, // size (little endian)
+                0x10, /// entry: int32
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0x78, 0x56, 0x34, 0x12,
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with integer (64-bit) member")
+        {
+            json const j =
+            {
+                { "entry", std::int64_t{0x1234567804030201} }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x14, 0x00, 0x00, 0x00, // size (little endian)
+                0x12, /// entry: int64
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0x01, 0x02, 0x03, 0x04, 0x78, 0x56, 0x34, 0x12,
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with negative integer (32-bit) member")
+        {
+            json const j =
+            {
+                { "entry", std::int32_t{-1} }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x10, 0x00, 0x00, 0x00, // size (little endian)
+                0x10, /// entry: int32
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0xFF, 0xFF, 0xFF, 0xFF,
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with negative integer (64-bit) member")
+        {
+            json const j =
+            {
+                { "entry", std::int64_t{-1} }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x10, 0x00, 0x00, 0x00, // size (little endian)
+                0x10, /// entry: int32
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0xFF, 0xFF, 0xFF, 0xFF,
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with unsigned integer (64-bit) member")
+        {
+            // directly encoding uint64 is not supported in bson (only for timestamp values)
+            json const j =
+            {
+                { "entry", std::uint64_t{0x1234567804030201} }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x14, 0x00, 0x00, 0x00, // size (little endian)
+                0x12, /// entry: int64
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0x01, 0x02, 0x03, 0x04, 0x78, 0x56, 0x34, 0x12,
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with small unsigned integer member")
+        {
+            json const j =
+            {
+                { "entry", std::uint64_t{0x42} }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x10, 0x00, 0x00, 0x00, // size (little endian)
+                0x10, /// entry: int32
+                'e', 'n', 't', 'r', 'y', '\x00',
+                0x42, 0x00, 0x00, 0x00,
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with object member")
+        {
+            json const j =
+            {
+                { "entry", json::object() }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x11, 0x00, 0x00, 0x00, // size (little endian)
+                0x03, /// entry: embedded document
+                'e', 'n', 't', 'r', 'y', '\x00',
+
+                0x05, 0x00, 0x00, 0x00, // size (little endian)
+                // no entries
+                0x00, // end marker (embedded document)
+
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with array member")
+        {
+            json const j =
+            {
+                { "entry", json::array() }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x11, 0x00, 0x00, 0x00, // size (little endian)
+                0x04, /// entry: embedded document
+                'e', 'n', 't', 'r', 'y', '\x00',
+
+                0x05, 0x00, 0x00, 0x00, // size (little endian)
+                // no entries
+                0x00, // end marker (embedded document)
+
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with non-empty array member")
+        {
+            json const j =
+            {
+                { "entry", json::array({1, 2, 3, 4, 5, 6, 7, 8}) }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x49, 0x00, 0x00, 0x00, // size (little endian)
+                0x04, /// entry: embedded document
+                'e', 'n', 't', 'r', 'y', '\x00',
+
+                0x3D, 0x00, 0x00, 0x00, // size (little endian)
+                0x10, '0', 0x00, 0x01, 0x00, 0x00, 0x00,
+                0x10, '1', 0x00, 0x02, 0x00, 0x00, 0x00,
+                0x10, '2', 0x00, 0x03, 0x00, 0x00, 0x00,
+                0x10, '3', 0x00, 0x04, 0x00, 0x00, 0x00,
+                0x10, '4', 0x00, 0x05, 0x00, 0x00, 0x00,
+                0x10, '5', 0x00, 0x06, 0x00, 0x00, 0x00,
+                0x10, '6', 0x00, 0x07, 0x00, 0x00, 0x00,
+                0x10, '7', 0x00, 0x08, 0x00, 0x00, 0x00,
+                0x00, // end marker (embedded document)
+
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with binary member")
+        {
+            const size_t N = 10;
+            const auto s = std::vector<std::uint8_t>(N, 'x');
+            json const j =
+            {
+                { "entry", json::binary(s, 0) }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x1B, 0x00, 0x00, 0x00, // size (little endian)
+                0x05, // entry: binary
+                'e', 'n', 't', 'r', 'y', '\x00',
+
+                0x0A, 0x00, 0x00, 0x00, // size of binary (little endian)
+                0x00, // Generic binary subtype
+                0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78,
+
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("non-empty object with binary member with subtype")
+        {
+            // an MD5 hash
+            const std::vector<std::uint8_t> md5hash = {0xd7, 0x7e, 0x27, 0x54, 0xbe, 0x12, 0x37, 0xfe, 0xd6, 0x0c, 0x33, 0x98, 0x30, 0x3b, 0x8d, 0xc4};
+            json const j =
+            {
+                { "entry", json::binary(md5hash, 5) }
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                0x21, 0x00, 0x00, 0x00, // size (little endian)
+                0x05, // entry: binary
+                'e', 'n', 't', 'r', 'y', '\x00',
+
+                0x10, 0x00, 0x00, 0x00, // size of binary (little endian)
+                0x05, // MD5 binary subtype
+                0xd7, 0x7e, 0x27, 0x54, 0xbe, 0x12, 0x37, 0xfe, 0xd6, 0x0c, 0x33, 0x98, 0x30, 0x3b, 0x8d, 0xc4,
+
+                0x00 // end marker
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+
+        SECTION("Some more complex document")
+        {
+            // directly encoding uint64 is not supported in bson (only for timestamp values)
+            json const j =
+            {
+                {"double", 42.5},
+                {"entry", 4.2},
+                {"number", 12345},
+                {"object", {{ "string", "value" }}}
+            };
+
+            std::vector<std::uint8_t> const expected =
+            {
+                /*size */ 0x4f, 0x00, 0x00, 0x00,
+                /*entry*/ 0x01, 'd',  'o',  'u',  'b',  'l',  'e',  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x45, 0x40,
+                /*entry*/ 0x01, 'e',  'n',  't',  'r',  'y',  0x00, 0xcd, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x10, 0x40,
+                /*entry*/ 0x10, 'n',  'u',  'm',  'b',  'e',  'r',  0x00, 0x39, 0x30, 0x00, 0x00,
+                /*entry*/ 0x03, 'o',  'b',  'j',  'e',  'c',  't',  0x00,
+                /*entry: obj-size */ 0x17, 0x00, 0x00, 0x00,
+                /*entry: obj-entry*/0x02, 's',  't',  'r',  'i',  'n',  'g', 0x00, 0x06, 0x00, 0x00, 0x00, 'v', 'a', 'l', 'u', 'e', 0,
+                /*entry: obj-term.*/0x00,
+                /*obj-term*/ 0x00
+            };
+
+            const auto result = json::to_bson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_bson(result) == j);
+            CHECK(json::from_bson(result, true, false) == j);
+        }
+    }
+
+    SECTION("Examples from https://bsonspec.org/faq.html")
+    {
+        SECTION("Example 1")
+        {
+            std::vector<std::uint8_t> input = {0x16, 0x00, 0x00, 0x00, 0x02, 'h', 'e', 'l', 'l', 'o', 0x00, 0x06, 0x00, 0x00, 0x00, 'w', 'o', 'r', 'l', 'd', 0x00, 0x00};
+            json parsed = json::from_bson(input);
+            json expected = {{"hello", "world"}};
+            CHECK(parsed == expected);
+            auto dumped = json::to_bson(parsed);
+            CHECK(dumped == input);
+            CHECK(json::from_bson(dumped) == expected);
+        }
+
+        SECTION("Example 2")
+        {
+            std::vector<std::uint8_t> input = {0x31, 0x00, 0x00, 0x00, 0x04, 'B', 'S', 'O', 'N', 0x00, 0x26, 0x00, 0x00, 0x00, 0x02, 0x30, 0x00, 0x08, 0x00, 0x00, 0x00, 'a', 'w', 'e', 's', 'o', 'm', 'e', 0x00, 0x01, 0x31, 0x00, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x14, 0x40, 0x10, 0x32, 0x00, 0xc2, 0x07, 0x00, 0x00, 0x00, 0x00};
+            json parsed = json::from_bson(input);
+            json expected = {{"BSON", {"awesome", 5.05, 1986}}};
+            CHECK(parsed == expected);
+            auto dumped = json::to_bson(parsed);
+            CHECK(dumped == input);
+            CHECK(json::from_bson(dumped) == expected);
+        }
+    }
+}
+
+TEST_CASE("BSON input/output_adapters")
+{
+    json json_representation =
+    {
+        {"double", 42.5},
+        {"entry", 4.2},
+        {"number", 12345},
+        {"object", {{ "string", "value" }}}
+    };
+
+    std::vector<std::uint8_t> const bson_representation =
+    {
+        /*size */ 0x4f, 0x00, 0x00, 0x00,
+        /*entry*/ 0x01, 'd',  'o',  'u',  'b',  'l',  'e',  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x45, 0x40,
+        /*entry*/ 0x01, 'e',  'n',  't',  'r',  'y',  0x00, 0xcd, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x10, 0x40,
+        /*entry*/ 0x10, 'n',  'u',  'm',  'b',  'e',  'r',  0x00, 0x39, 0x30, 0x00, 0x00,
+        /*entry*/ 0x03, 'o',  'b',  'j',  'e',  'c',  't',  0x00,
+        /*entry: obj-size */ 0x17, 0x00, 0x00, 0x00,
+        /*entry: obj-entry*/0x02, 's',  't',  'r',  'i',  'n',  'g', 0x00, 0x06, 0x00, 0x00, 0x00, 'v', 'a', 'l', 'u', 'e', 0,
+        /*entry: obj-term.*/0x00,
+        /*obj-term*/ 0x00
+    };
+
+    json j2;
+    CHECK_NOTHROW(j2 = json::from_bson(bson_representation));
+
+    // compare parsed JSON values
+    CHECK(json_representation == j2);
+
+    SECTION("roundtrips")
+    {
+        SECTION("std::ostringstream")
+        {
+            std::basic_ostringstream<char> ss;
+            json::to_bson(json_representation, ss);
+            json j3 = json::from_bson(ss.str());
+            CHECK(json_representation == j3);
+        }
+
+        SECTION("std::string")
+        {
+            std::string s;
+            json::to_bson(json_representation, s);
+            json j3 = json::from_bson(s);
+            CHECK(json_representation == j3);
+        }
+
+        SECTION("std::vector")
+        {
+            std::vector<std::uint8_t> v;
+            json::to_bson(json_representation, v);
+            json j3 = json::from_bson(v);
+            CHECK(json_representation == j3);
+        }
+    }
+}
+
+namespace
+{
+class SaxCountdown
+{
+  public:
+    explicit SaxCountdown(const int count) : events_left(count)
+    {}
+
+    bool null()
+    {
+        return events_left-- > 0;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_integer(json::number_integer_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_unsigned(json::number_unsigned_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_float(json::number_float_t /*unused*/, const std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool string(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool binary(std::vector<std::uint8_t>& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_object(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool key(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_object()
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_array(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_array()
+    {
+        return events_left-- > 0;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const json::exception& /*unused*/) // NOLINT(readability-convert-member-functions-to-static)
+    {
+        return false;
+    }
+
+  private:
+    int events_left = 0;
+};
+} // namespace
+
+TEST_CASE("Incomplete BSON Input")
+{
+    SECTION("Incomplete BSON Input 1")
+    {
+        std::vector<std::uint8_t> const incomplete_bson =
+        {
+            0x0D, 0x00, 0x00, 0x00, // size (little endian)
+            0x08,                   // entry: boolean
+            'e', 'n', 't'           // unexpected EOF
+        };
+
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_bson(incomplete_bson), "[json.exception.parse_error.110] parse error at byte 9: syntax error while parsing BSON cstring: unexpected end of input", json::parse_error&);
+
+        CHECK(json::from_bson(incomplete_bson, true, false).is_discarded());
+
+        SaxCountdown scp(0);
+        CHECK(!json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson));
+    }
+
+    SECTION("Incomplete BSON Input 2")
+    {
+        std::vector<std::uint8_t> const incomplete_bson =
+        {
+            0x0D, 0x00, 0x00, 0x00, // size (little endian)
+            0x08,                   // entry: boolean, unexpected EOF
+        };
+
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_bson(incomplete_bson), "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing BSON cstring: unexpected end of input", json::parse_error&);
+        CHECK(json::from_bson(incomplete_bson, true, false).is_discarded());
+
+        SaxCountdown scp(0);
+        CHECK(!json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson));
+    }
+
+    SECTION("Incomplete BSON Input 3")
+    {
+        std::vector<std::uint8_t> const incomplete_bson =
+        {
+            0x41, 0x00, 0x00, 0x00, // size (little endian)
+            0x04, /// entry: embedded document
+            'e', 'n', 't', 'r', 'y', '\x00',
+
+            0x35, 0x00, 0x00, 0x00, // size (little endian)
+            0x10, 0x00, 0x01, 0x00, 0x00, 0x00,
+            0x10, 0x00, 0x02, 0x00, 0x00, 0x00
+            // missing input data...
+        };
+
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_bson(incomplete_bson), "[json.exception.parse_error.110] parse error at byte 28: syntax error while parsing BSON element list: unexpected end of input", json::parse_error&);
+        CHECK(json::from_bson(incomplete_bson, true, false).is_discarded());
+
+        SaxCountdown scp(1);
+        CHECK(!json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson));
+    }
+
+    SECTION("Incomplete BSON Input 4")
+    {
+        std::vector<std::uint8_t> const incomplete_bson =
+        {
+            0x0D, 0x00, // size (incomplete), unexpected EOF
+        };
+
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_bson(incomplete_bson), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing BSON number: unexpected end of input", json::parse_error&);
+        CHECK(json::from_bson(incomplete_bson, true, false).is_discarded());
+
+        SaxCountdown scp(0);
+        CHECK(!json::sax_parse(incomplete_bson, &scp, json::input_format_t::bson));
+    }
+
+    SECTION("Improve coverage")
+    {
+        SECTION("key")
+        {
+            json const j = {{"key", "value"}};
+            auto bson_vec = json::to_bson(j);
+            SaxCountdown scp(2);
+            CHECK(!json::sax_parse(bson_vec, &scp, json::input_format_t::bson));
+        }
+
+        SECTION("array")
+        {
+            json const j =
+            {
+                { "entry", json::array() }
+            };
+            auto bson_vec = json::to_bson(j);
+            SaxCountdown scp(2);
+            CHECK(!json::sax_parse(bson_vec, &scp, json::input_format_t::bson));
+        }
+    }
+}
+
+TEST_CASE("Negative size of binary value")
+{
+    // invalid BSON: the size of the binary value is -1
+    std::vector<std::uint8_t> const input =
+    {
+        0x21, 0x00, 0x00, 0x00, // size (little endian)
+        0x05, // entry: binary
+        'e', 'n', 't', 'r', 'y', '\x00',
+
+        0xFF, 0xFF, 0xFF, 0xFF, // size of binary (little endian)
+        0x05, // MD5 binary subtype
+        0xd7, 0x7e, 0x27, 0x54, 0xbe, 0x12, 0x37, 0xfe, 0xd6, 0x0c, 0x33, 0x98, 0x30, 0x3b, 0x8d, 0xc4,
+
+        0x00 // end marker
+    };
+    json _;
+    CHECK_THROWS_WITH_AS(_ = json::from_bson(input), "[json.exception.parse_error.112] parse error at byte 15: syntax error while parsing BSON binary: byte array length cannot be negative, is -1", json::parse_error);
+}
+
+TEST_CASE("Unsupported BSON input")
+{
+    std::vector<std::uint8_t> const bson =
+    {
+        0x0C, 0x00, 0x00, 0x00, // size (little endian)
+        0xFF,                   // entry type: Min key (not supported yet)
+        'e', 'n', 't', 'r', 'y', '\x00',
+        0x00 // end marker
+    };
+
+    json _;
+    CHECK_THROWS_WITH_AS(_ = json::from_bson(bson), "[json.exception.parse_error.114] parse error at byte 5: Unsupported BSON record type 0xFF", json::parse_error&);
+    CHECK(json::from_bson(bson, true, false).is_discarded());
+
+    SaxCountdown scp(0);
+    CHECK(!json::sax_parse(bson, &scp, json::input_format_t::bson));
+}
+
+TEST_CASE("BSON numerical data")
+{
+    SECTION("number")
+    {
+        SECTION("signed")
+        {
+            SECTION("std::int64_t: INT64_MIN .. INT32_MIN-1")
+            {
+                std::vector<int64_t> const numbers
+                {
+                    (std::numeric_limits<int64_t>::min)(),
+                    -1000000000000000000LL,
+                    -100000000000000000LL,
+                    -10000000000000000LL,
+                    -1000000000000000LL,
+                    -100000000000000LL,
+                    -10000000000000LL,
+                    -1000000000000LL,
+                    -100000000000LL,
+                    -10000000000LL,
+                    static_cast<std::int64_t>((std::numeric_limits<std::int32_t>::min)()) - 1,
+                };
+
+                for (const auto i : numbers)
+                {
+
+                    CAPTURE(i)
+
+                    json const j =
+                    {
+                        { "entry", i }
+                    };
+                    CHECK(j.at("entry").is_number_integer());
+
+                    std::uint64_t const iu = *reinterpret_cast<const std::uint64_t*>(&i);
+                    std::vector<std::uint8_t> const expected_bson =
+                    {
+                        0x14u, 0x00u, 0x00u, 0x00u, // size (little endian)
+                        0x12u, /// entry: int64
+                        'e', 'n', 't', 'r', 'y', '\x00',
+                        static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 4u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 5u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 6u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 7u)) & 0xffu),
+                        0x00u // end marker
+                    };
+
+                    const auto bson = json::to_bson(j);
+                    CHECK(bson == expected_bson);
+
+                    auto j_roundtrip = json::from_bson(bson);
+
+                    CHECK(j_roundtrip.at("entry").is_number_integer());
+                    CHECK(j_roundtrip == j);
+                    CHECK(json::from_bson(bson, true, false) == j);
+
+                }
+            }
+
+            SECTION("signed std::int32_t: INT32_MIN .. INT32_MAX")
+            {
+                std::vector<int32_t> const numbers
+                {
+                    (std::numeric_limits<int32_t>::min)(),
+                    -2147483647L,
+                    -1000000000L,
+                    -100000000L,
+                    -10000000L,
+                    -1000000L,
+                    -100000L,
+                    -10000L,
+                    -1000L,
+                    -100L,
+                    -10L,
+                    -1L,
+                    0L,
+                    1L,
+                    10L,
+                    100L,
+                    1000L,
+                    10000L,
+                    100000L,
+                    1000000L,
+                    10000000L,
+                    100000000L,
+                    1000000000L,
+                    2147483646L,
+                    (std::numeric_limits<int32_t>::max)()
+                };
+
+                for (const auto i : numbers)
+                {
+
+                    CAPTURE(i)
+
+                    json const j =
+                    {
+                        { "entry", i }
+                    };
+                    CHECK(j.at("entry").is_number_integer());
+
+                    std::uint32_t const iu = *reinterpret_cast<const std::uint32_t*>(&i);
+                    std::vector<std::uint8_t> const expected_bson =
+                    {
+                        0x10u, 0x00u, 0x00u, 0x00u, // size (little endian)
+                        0x10u, /// entry: int32
+                        'e', 'n', 't', 'r', 'y', '\x00',
+                        static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+                        0x00u // end marker
+                    };
+
+                    const auto bson = json::to_bson(j);
+                    CHECK(bson == expected_bson);
+
+                    auto j_roundtrip = json::from_bson(bson);
+
+                    CHECK(j_roundtrip.at("entry").is_number_integer());
+                    CHECK(j_roundtrip == j);
+                    CHECK(json::from_bson(bson, true, false) == j);
+
+                }
+            }
+
+            SECTION("signed std::int64_t: INT32_MAX+1 .. INT64_MAX")
+            {
+                std::vector<int64_t> const numbers
+                {
+                    (std::numeric_limits<int64_t>::max)(),
+                    1000000000000000000LL,
+                    100000000000000000LL,
+                    10000000000000000LL,
+                    1000000000000000LL,
+                    100000000000000LL,
+                    10000000000000LL,
+                    1000000000000LL,
+                    100000000000LL,
+                    10000000000LL,
+                    static_cast<std::int64_t>((std::numeric_limits<int32_t>::max)()) + 1,
+                };
+
+                for (const auto i : numbers)
+                {
+
+                    CAPTURE(i)
+
+                    json const j =
+                    {
+                        { "entry", i }
+                    };
+                    CHECK(j.at("entry").is_number_integer());
+
+                    std::uint64_t const iu = *reinterpret_cast<const std::uint64_t*>(&i);
+                    std::vector<std::uint8_t> const expected_bson =
+                    {
+                        0x14u, 0x00u, 0x00u, 0x00u, // size (little endian)
+                        0x12u, /// entry: int64
+                        'e', 'n', 't', 'r', 'y', '\x00',
+                        static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 4u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 5u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 6u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 7u)) & 0xffu),
+                        0x00u // end marker
+                    };
+
+                    const auto bson = json::to_bson(j);
+                    CHECK(bson == expected_bson);
+
+                    auto j_roundtrip = json::from_bson(bson);
+
+                    CHECK(j_roundtrip.at("entry").is_number_integer());
+                    CHECK(j_roundtrip == j);
+                    CHECK(json::from_bson(bson, true, false) == j);
+
+                }
+            }
+        }
+
+        SECTION("unsigned")
+        {
+            SECTION("unsigned std::uint64_t: 0 .. INT32_MAX")
+            {
+                std::vector<std::uint64_t> const numbers
+                {
+                    0ULL,
+                    1ULL,
+                    10ULL,
+                    100ULL,
+                    1000ULL,
+                    10000ULL,
+                    100000ULL,
+                    1000000ULL,
+                    10000000ULL,
+                    100000000ULL,
+                    1000000000ULL,
+                    2147483646ULL,
+                    static_cast<std::uint64_t>((std::numeric_limits<int32_t>::max)())
+                };
+
+                for (const auto i : numbers)
+                {
+
+                    CAPTURE(i)
+
+                    json const j =
+                    {
+                        { "entry", i }
+                    };
+
+                    auto iu = i;
+                    std::vector<std::uint8_t> const expected_bson =
+                    {
+                        0x10u, 0x00u, 0x00u, 0x00u, // size (little endian)
+                        0x10u, /// entry: int32
+                        'e', 'n', 't', 'r', 'y', '\x00',
+                        static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+                        0x00u // end marker
+                    };
+
+                    const auto bson = json::to_bson(j);
+                    CHECK(bson == expected_bson);
+
+                    auto j_roundtrip = json::from_bson(bson);
+
+                    CHECK(j.at("entry").is_number_unsigned());
+                    CHECK(j_roundtrip.at("entry").is_number_integer());
+                    CHECK(j_roundtrip == j);
+                    CHECK(json::from_bson(bson, true, false) == j);
+
+                }
+            }
+
+            SECTION("unsigned std::uint64_t: INT32_MAX+1 .. INT64_MAX")
+            {
+                std::vector<std::uint64_t> const numbers
+                {
+                    static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()) + 1,
+                    4000000000ULL,
+                    static_cast<std::uint64_t>((std::numeric_limits<std::uint32_t>::max)()),
+                    10000000000ULL,
+                    100000000000ULL,
+                    1000000000000ULL,
+                    10000000000000ULL,
+                    100000000000000ULL,
+                    1000000000000000ULL,
+                    10000000000000000ULL,
+                    100000000000000000ULL,
+                    1000000000000000000ULL,
+                    static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()),
+                };
+
+                for (const auto i : numbers)
+                {
+
+                    CAPTURE(i)
+
+                    json const j =
+                    {
+                        { "entry", i }
+                    };
+
+                    auto iu = i;
+                    std::vector<std::uint8_t> const expected_bson =
+                    {
+                        0x14u, 0x00u, 0x00u, 0x00u, // size (little endian)
+                        0x12u, /// entry: int64
+                        'e', 'n', 't', 'r', 'y', '\x00',
+                        static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 4u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 5u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 6u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 7u)) & 0xffu),
+                        0x00u // end marker
+                    };
+
+                    const auto bson = json::to_bson(j);
+                    CHECK(bson == expected_bson);
+
+                    auto j_roundtrip = json::from_bson(bson);
+
+                    CHECK(j.at("entry").is_number_unsigned());
+                    CHECK(j_roundtrip.at("entry").is_number_integer());
+                    CHECK(j_roundtrip == j);
+                    CHECK(json::from_bson(bson, true, false) == j);
+                }
+            }
+
+            SECTION("unsigned std::uint64_t: INT64_MAX+1 .. UINT64_MAX")
+            {
+                std::vector<std::uint64_t> const numbers
+                {
+                    static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()) + 1ULL,
+                    10000000000000000000ULL,
+                    18000000000000000000ULL,
+                    (std::numeric_limits<std::uint64_t>::max)() - 1ULL,
+                    (std::numeric_limits<std::uint64_t>::max)(),
+                };
+
+                for (const auto i : numbers)
+                {
+
+                    CAPTURE(i)
+
+                    json const j =
+                    {
+                        { "entry", i }
+                    };
+
+                    auto iu = i;
+                    std::vector<std::uint8_t> const expected_bson =
+                    {
+                        0x14u, 0x00u, 0x00u, 0x00u, // size (little endian)
+                        0x12u, /// entry: int64
+                        'e', 'n', 't', 'r', 'y', '\x00',
+                        static_cast<std::uint8_t>((iu >> (8u * 0u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 1u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 2u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 3u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 4u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 5u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 6u)) & 0xffu),
+                        static_cast<std::uint8_t>((iu >> (8u * 7u)) & 0xffu),
+                        0x00u // end marker
+                    };
+
+                    CHECK_THROWS_AS(json::to_bson(j), json::out_of_range&);
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_STD_STR(json::to_bson(j), "[json.exception.out_of_range.407] (/entry) integer number " + std::to_string(i) + " cannot be represented by BSON as it does not fit int64");
+#else
+                    CHECK_THROWS_WITH_STD_STR(json::to_bson(j), "[json.exception.out_of_range.407] integer number " + std::to_string(i) + " cannot be represented by BSON as it does not fit int64");
+#endif
+                }
+            }
+
+        }
+    }
+}
+
+TEST_CASE("BSON roundtrips" * doctest::skip())
+{
+    SECTION("reference files")
+    {
+        for (const std::string filename :
+                {
+                    TEST_DATA_DIRECTORY "/json.org/1.json",
+                    TEST_DATA_DIRECTORY "/json.org/2.json",
+                    TEST_DATA_DIRECTORY "/json.org/3.json",
+                    TEST_DATA_DIRECTORY "/json.org/4.json",
+                    TEST_DATA_DIRECTORY "/json.org/5.json"
+                })
+        {
+            CAPTURE(filename)
+
+            {
+                INFO_WITH_TEMP(filename + ": std::vector<std::uint8_t>");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse BSON file
+                auto packed = utils::read_binary_file(filename + ".bson");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_bson(packed));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": std::ifstream");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse BSON file
+                std::ifstream f_bson(filename + ".bson", std::ios::binary);
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_bson(f_bson));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": uint8_t* and size");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse BSON file
+                auto packed = utils::read_binary_file(filename + ".bson");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_bson({packed.data(), packed.size()}));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": output to output adapters");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json const j1 = json::parse(f_json);
+
+                // parse BSON file
+                auto packed = utils::read_binary_file(filename + ".bson");
+
+                {
+                    INFO_WITH_TEMP(filename + ": output adapters: std::vector<std::uint8_t>");
+                    std::vector<std::uint8_t> vec;
+                    json::to_bson(j1, vec);
+
+                    if (vec != packed)
+                    {
+                        // the exact serializations may differ due to the order of
+                        // object keys; in these cases, just compare whether both
+                        // serializations create the same JSON value
+                        CHECK(json::from_bson(vec) == json::from_bson(packed));
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-byte_container_with_subtype.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-byte_container_with_subtype.cpp
new file mode 100644
index 00000000..227655e8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-byte_container_with_subtype.cpp
@@ -0,0 +1,76 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("byte_container_with_subtype")
+{
+    using subtype_type = nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>>::subtype_type;
+
+    SECTION("empty container")
+    {
+        nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container;
+
+        CHECK(!container.has_subtype());
+        CHECK(container.subtype() == static_cast<subtype_type>(-1));
+
+        container.clear_subtype();
+        CHECK(!container.has_subtype());
+        CHECK(container.subtype() == static_cast<subtype_type>(-1));
+
+        container.set_subtype(42);
+        CHECK(container.has_subtype());
+        CHECK(container.subtype() == 42);
+    }
+
+    SECTION("subtyped container")
+    {
+        nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container({}, 42);
+        CHECK(container.has_subtype());
+        CHECK(container.subtype() == 42);
+
+        container.clear_subtype();
+        CHECK(!container.has_subtype());
+        CHECK(container.subtype() == static_cast<subtype_type>(-1));
+    }
+
+    SECTION("comparisons")
+    {
+        std::vector<std::uint8_t> const bytes = {{0xCA, 0xFE, 0xBA, 0xBE}};
+        nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container1;
+        nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container2({}, 42);
+        nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container3(bytes);
+        nlohmann::byte_container_with_subtype<std::vector<std::uint8_t>> container4(bytes, 42);
+
+        CHECK(container1 == container1);
+        CHECK(container1 != container2);
+        CHECK(container1 != container3);
+        CHECK(container1 != container4);
+        CHECK(container2 != container1);
+        CHECK(container2 == container2);
+        CHECK(container2 != container3);
+        CHECK(container2 != container4);
+        CHECK(container3 != container1);
+        CHECK(container3 != container2);
+        CHECK(container3 == container3);
+        CHECK(container3 != container4);
+        CHECK(container4 != container1);
+        CHECK(container4 != container2);
+        CHECK(container4 != container3);
+        CHECK(container4 == container4);
+
+        container3.clear();
+        container4.clear();
+
+        CHECK(container1 == container3);
+        CHECK(container2 == container4);
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-capacity.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-capacity.cpp
new file mode 100644
index 00000000..9f8e9ffb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-capacity.cpp
@@ -0,0 +1,542 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("capacity")
+{
+    SECTION("empty()")
+    {
+        SECTION("boolean")
+        {
+            json j = true; // NOLINT(misc-const-correctness)
+            const json j_const = true;
+
+            SECTION("result of empty")
+            {
+                CHECK(j.empty() == false);
+                CHECK(j_const.empty() == false);
+            }
+
+            SECTION("definition of empty")
+            {
+                CHECK(j.empty() == (j.begin() == j.end()));
+                CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+            }
+        }
+
+        SECTION("string")
+        {
+            json j = "hello world"; // NOLINT(misc-const-correctness)
+            const json j_const = "hello world";
+
+            SECTION("result of empty")
+            {
+                CHECK(j.empty() == false);
+                CHECK(j_const.empty() == false);
+            }
+
+            SECTION("definition of empty")
+            {
+                CHECK(j.empty() == (j.begin() == j.end()));
+                CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty array")
+            {
+                json j = json::array(); // NOLINT(misc-const-correctness)
+                const json j_const = json::array();
+
+                SECTION("result of empty")
+                {
+                    CHECK(j.empty() == true);
+                    CHECK(j_const.empty() == true);
+                }
+
+                SECTION("definition of empty")
+                {
+                    CHECK(j.empty() == (j.begin() == j.end()));
+                    CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+                }
+            }
+
+            SECTION("filled array")
+            {
+                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                const json j_const = {1, 2, 3};
+
+                SECTION("result of empty")
+                {
+                    CHECK(j.empty() == false);
+                    CHECK(j_const.empty() == false);
+                }
+
+                SECTION("definition of empty")
+                {
+                    CHECK(j.empty() == (j.begin() == j.end()));
+                    CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+                }
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty object")
+            {
+                json j = json::object(); // NOLINT(misc-const-correctness)
+                const json j_const = json::object();
+
+                SECTION("result of empty")
+                {
+                    CHECK(j.empty() == true);
+                    CHECK(j_const.empty() == true);
+                }
+
+                SECTION("definition of empty")
+                {
+                    CHECK(j.empty() == (j.begin() == j.end()));
+                    CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+                }
+            }
+
+            SECTION("filled object")
+            {
+                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};
+
+                SECTION("result of empty")
+                {
+                    CHECK(j.empty() == false);
+                    CHECK(j_const.empty() == false);
+                }
+
+                SECTION("definition of empty")
+                {
+                    CHECK(j.empty() == (j.begin() == j.end()));
+                    CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+                }
+            }
+        }
+
+        SECTION("number (integer)")
+        {
+            json j = -23; // NOLINT(misc-const-correctness)
+            const json j_const = -23;
+
+            SECTION("result of empty")
+            {
+                CHECK(j.empty() == false);
+                CHECK(j_const.empty() == false);
+            }
+
+            SECTION("definition of empty")
+            {
+                CHECK(j.empty() == (j.begin() == j.end()));
+                CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+            }
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json j = 23u; // NOLINT(misc-const-correctness)
+            const json j_const = 23u;
+
+            SECTION("result of empty")
+            {
+                CHECK(j.empty() == false);
+                CHECK(j_const.empty() == false);
+            }
+
+            SECTION("definition of empty")
+            {
+                CHECK(j.empty() == (j.begin() == j.end()));
+                CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+            }
+        }
+
+        SECTION("number (float)")
+        {
+            json j = 23.42; // NOLINT(misc-const-correctness)
+            const json j_const = 23.42;
+
+            SECTION("result of empty")
+            {
+                CHECK(j.empty() == false);
+                CHECK(j_const.empty() == false);
+            }
+
+            SECTION("definition of empty")
+            {
+                CHECK(j.empty() == (j.begin() == j.end()));
+                CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+            }
+        }
+
+        SECTION("null")
+        {
+            json j = nullptr; // NOLINT(misc-const-correctness)
+            const json j_const = nullptr;
+
+            SECTION("result of empty")
+            {
+                CHECK(j.empty() == true);
+                CHECK(j_const.empty() == true);
+            }
+
+            SECTION("definition of empty")
+            {
+                CHECK(j.empty() == (j.begin() == j.end()));
+                CHECK(j_const.empty() == (j_const.begin() == j_const.end()));
+            }
+        }
+    }
+
+    SECTION("size()")
+    {
+        SECTION("boolean")
+        {
+            json j = true; // NOLINT(misc-const-correctness)
+            const json j_const = true;
+
+            SECTION("result of size")
+            {
+                CHECK(j.size() == 1);
+                CHECK(j_const.size() == 1);
+            }
+
+            SECTION("definition of size")
+            {
+                CHECK(std::distance(j.begin(), j.end()) == j.size());
+                CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+            }
+        }
+
+        SECTION("string")
+        {
+            json j = "hello world"; // NOLINT(misc-const-correctness)
+            const json j_const = "hello world";
+
+            SECTION("result of size")
+            {
+                CHECK(j.size() == 1);
+                CHECK(j_const.size() == 1);
+            }
+
+            SECTION("definition of size")
+            {
+                CHECK(std::distance(j.begin(), j.end()) == j.size());
+                CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty array")
+            {
+                json j = json::array(); // NOLINT(misc-const-correctness)
+                const json j_const = json::array();
+
+                SECTION("result of size")
+                {
+                    CHECK(j.size() == 0);
+                    CHECK(j_const.size() == 0);
+                }
+
+                SECTION("definition of size")
+                {
+                    CHECK(std::distance(j.begin(), j.end()) == j.size());
+                    CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                    CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                    CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+                }
+            }
+
+            SECTION("filled array")
+            {
+                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                const json j_const = {1, 2, 3};
+
+                SECTION("result of size")
+                {
+                    CHECK(j.size() == 3);
+                    CHECK(j_const.size() == 3);
+                }
+
+                SECTION("definition of size")
+                {
+                    CHECK(std::distance(j.begin(), j.end()) == j.size());
+                    CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                    CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                    CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+                }
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty object")
+            {
+                json j = json::object(); // NOLINT(misc-const-correctness)
+                const json j_const = json::object();
+
+                SECTION("result of size")
+                {
+                    CHECK(j.size() == 0);
+                    CHECK(j_const.size() == 0);
+                }
+
+                SECTION("definition of size")
+                {
+                    CHECK(std::distance(j.begin(), j.end()) == j.size());
+                    CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                    CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                    CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+                }
+            }
+
+            SECTION("filled object")
+            {
+                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};
+
+                SECTION("result of size")
+                {
+                    CHECK(j.size() == 3);
+                    CHECK(j_const.size() == 3);
+                }
+
+                SECTION("definition of size")
+                {
+                    CHECK(std::distance(j.begin(), j.end()) == j.size());
+                    CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                    CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                    CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+                }
+            }
+        }
+
+        SECTION("number (integer)")
+        {
+            json j = -23; // NOLINT(misc-const-correctness)
+            const json j_const = -23;
+
+            SECTION("result of size")
+            {
+                CHECK(j.size() == 1);
+                CHECK(j_const.size() == 1);
+            }
+
+            SECTION("definition of size")
+            {
+                CHECK(std::distance(j.begin(), j.end()) == j.size());
+                CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+            }
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json j = 23u; // NOLINT(misc-const-correctness)
+            const json j_const = 23u;
+
+            SECTION("result of size")
+            {
+                CHECK(j.size() == 1);
+                CHECK(j_const.size() == 1);
+            }
+
+            SECTION("definition of size")
+            {
+                CHECK(std::distance(j.begin(), j.end()) == j.size());
+                CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+            }
+        }
+
+        SECTION("number (float)")
+        {
+            json j = 23.42; // NOLINT(misc-const-correctness)
+            const json j_const = 23.42;
+
+            SECTION("result of size")
+            {
+                CHECK(j.size() == 1);
+                CHECK(j_const.size() == 1);
+            }
+
+            SECTION("definition of size")
+            {
+                CHECK(std::distance(j.begin(), j.end()) == j.size());
+                CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+            }
+        }
+
+        SECTION("null")
+        {
+            json j = nullptr; // NOLINT(misc-const-correctness)
+            const json j_const = nullptr;
+
+            SECTION("result of size")
+            {
+                CHECK(j.size() == 0);
+                CHECK(j_const.size() == 0);
+            }
+
+            SECTION("definition of size")
+            {
+                CHECK(std::distance(j.begin(), j.end()) == j.size());
+                CHECK(std::distance(j_const.begin(), j_const.end()) == j_const.size());
+                CHECK(std::distance(j.rbegin(), j.rend()) == j.size());
+                CHECK(std::distance(j_const.crbegin(), j_const.crend()) == j_const.size());
+            }
+        }
+    }
+
+    SECTION("max_size()")
+    {
+        SECTION("boolean")
+        {
+            json j = true; // NOLINT(misc-const-correctness)
+            const json j_const = true;
+
+            SECTION("result of max_size")
+            {
+                CHECK(j.max_size() == 1);
+                CHECK(j_const.max_size() == 1);
+            }
+        }
+
+        SECTION("string")
+        {
+            json j = "hello world"; // NOLINT(misc-const-correctness)
+            const json j_const = "hello world";
+
+            SECTION("result of max_size")
+            {
+                CHECK(j.max_size() == 1);
+                CHECK(j_const.max_size() == 1);
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty array")
+            {
+                json j = json::array(); // NOLINT(misc-const-correctness)
+                const json j_const = json::array();
+
+                SECTION("result of max_size")
+                {
+                    CHECK(j.max_size() >= j.size());
+                    CHECK(j_const.max_size() >= j_const.size());
+                }
+            }
+
+            SECTION("filled array")
+            {
+                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                const json j_const = {1, 2, 3};
+
+                SECTION("result of max_size")
+                {
+                    CHECK(j.max_size() >= j.size());
+                    CHECK(j_const.max_size() >= j_const.size());
+                }
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty object")
+            {
+                json j = json::object(); // NOLINT(misc-const-correctness)
+                const json j_const = json::object();
+
+                SECTION("result of max_size")
+                {
+                    CHECK(j.max_size() >= j.size());
+                    CHECK(j_const.max_size() >= j_const.size());
+                }
+            }
+
+            SECTION("filled object")
+            {
+                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};
+
+                SECTION("result of max_size")
+                {
+                    CHECK(j.max_size() >= j.size());
+                    CHECK(j_const.max_size() >= j_const.size());
+                }
+            }
+        }
+
+        SECTION("number (integer)")
+        {
+            json j = -23; // NOLINT(misc-const-correctness)
+            const json j_const = -23;
+
+            SECTION("result of max_size")
+            {
+                CHECK(j.max_size() == 1);
+                CHECK(j_const.max_size() == 1);
+            }
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json j = 23u; // NOLINT(misc-const-correctness)
+            const json j_const = 23u;
+
+            SECTION("result of max_size")
+            {
+                CHECK(j.max_size() == 1);
+                CHECK(j_const.max_size() == 1);
+            }
+        }
+
+        SECTION("number (float)")
+        {
+            json j = 23.42; // NOLINT(misc-const-correctness)
+            const json j_const = 23.42;
+
+            SECTION("result of max_size")
+            {
+                CHECK(j.max_size() == 1);
+                CHECK(j_const.max_size() == 1);
+            }
+        }
+
+        SECTION("null")
+        {
+            json j = nullptr; // NOLINT(misc-const-correctness)
+            const json j_const = nullptr;
+
+            SECTION("result of max_size")
+            {
+                CHECK(j.max_size() == 0);
+                CHECK(j_const.max_size() == 0);
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-cbor.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-cbor.cpp
new file mode 100644
index 00000000..6c0c50ae
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-cbor.cpp
@@ -0,0 +1,2704 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <sstream>
+#include <iomanip>
+#include <limits>
+#include <set>
+#include "make_test_data_available.hpp"
+#include "test_utils.hpp"
+
+namespace
+{
+class SaxCountdown
+{
+  public:
+    explicit SaxCountdown(const int count) : events_left(count)
+    {}
+
+    bool null()
+    {
+        return events_left-- > 0;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_integer(json::number_integer_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_unsigned(json::number_unsigned_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_float(json::number_float_t /*unused*/, const std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool string(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool binary(std::vector<std::uint8_t>& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_object(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool key(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_object()
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_array(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_array()
+    {
+        return events_left-- > 0;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const json::exception& /*unused*/) // NOLINT(readability-convert-member-functions-to-static)
+    {
+        return false;
+    }
+
+  private:
+    int events_left = 0;
+};
+} // namespace
+
+TEST_CASE("CBOR")
+{
+    SECTION("individual values")
+    {
+        SECTION("discarded")
+        {
+            // discarded values are not serialized
+            json const j = json::value_t::discarded;
+            const auto result = json::to_cbor(j);
+            CHECK(result.empty());
+        }
+
+        SECTION("NaN")
+        {
+            // NaN value
+            json const j = std::numeric_limits<json::number_float_t>::quiet_NaN();
+            const std::vector<uint8_t> expected = {0xf9, 0x7e, 0x00};
+            const auto result = json::to_cbor(j);
+            CHECK(result == expected);
+        }
+
+        SECTION("Infinity")
+        {
+            // Infinity value
+            json const j = std::numeric_limits<json::number_float_t>::infinity();
+            const std::vector<uint8_t> expected = {0xf9, 0x7c, 0x00};
+            const auto result = json::to_cbor(j);
+            CHECK(result == expected);
+        }
+
+        SECTION("null")
+        {
+            const json j = nullptr;
+            const std::vector<uint8_t> expected = {0xf6};
+            const auto result = json::to_cbor(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_cbor(result) == j);
+            CHECK(json::from_cbor(result, true, false) == j);
+        }
+
+        SECTION("boolean")
+        {
+            SECTION("true")
+            {
+                const json j = true;
+                const std::vector<uint8_t> expected = {0xf5};
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("false")
+            {
+                const json j = false;
+                const std::vector<uint8_t> expected = {0xf4};
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+        }
+
+        SECTION("number")
+        {
+            SECTION("signed")
+            {
+                SECTION("-9223372036854775808..-4294967297")
+                {
+                    const std::vector<int64_t> numbers
+                    {
+                        (std::numeric_limits<int64_t>::min)(),
+                        -1000000000000000000,
+                        -100000000000000000,
+                        -10000000000000000,
+                        -1000000000000000,
+                        -100000000000000,
+                        -10000000000000,
+                        -1000000000000,
+                        -100000000000,
+                        -10000000000,
+                        -4294967297,
+                    };
+                    for (const auto i : numbers)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const auto positive = static_cast<uint64_t>(-1 - i);
+                        const std::vector<uint8_t> expected
+                        {
+                            static_cast<uint8_t>(0x3b),
+                            static_cast<uint8_t>((positive >> 56) & 0xff),
+                            static_cast<uint8_t>((positive >> 48) & 0xff),
+                            static_cast<uint8_t>((positive >> 40) & 0xff),
+                            static_cast<uint8_t>((positive >> 32) & 0xff),
+                            static_cast<uint8_t>((positive >> 24) & 0xff),
+                            static_cast<uint8_t>((positive >> 16) & 0xff),
+                            static_cast<uint8_t>((positive >> 8) & 0xff),
+                            static_cast<uint8_t>(positive & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x3b);
+                        const uint64_t restored = (static_cast<uint64_t>(result[1]) << 070) +
+                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) +
+                                                  (static_cast<uint64_t>(result[6]) << 020) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) +
+                                                  static_cast<uint64_t>(result[8]);
+                        CHECK(restored == positive);
+                        CHECK(-1 - static_cast<int64_t>(restored) == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-4294967296..-65537")
+                {
+                    const std::vector<int64_t> numbers
+                    {
+                        -65537,
+                            -100000,
+                            -1000000,
+                            -10000000,
+                            -100000000,
+                            -1000000000,
+                            -4294967296,
+                        };
+                    for (const auto i : numbers)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        auto positive = static_cast<uint32_t>(static_cast<uint64_t>(-1 - i) & 0x00000000ffffffff);
+                        const std::vector<uint8_t> expected
+                        {
+                            static_cast<uint8_t>(0x3a),
+                            static_cast<uint8_t>((positive >> 24) & 0xff),
+                            static_cast<uint8_t>((positive >> 16) & 0xff),
+                            static_cast<uint8_t>((positive >> 8) & 0xff),
+                            static_cast<uint8_t>(positive & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x3a);
+                        const uint32_t restored = (static_cast<uint32_t>(result[1]) << 030) +
+                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) +
+                                                  static_cast<uint32_t>(result[4]);
+                        CHECK(restored == positive);
+                        CHECK(-1LL - restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-65536..-257")
+                {
+                    for (int32_t i = -65536; i <= -257; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const auto positive = static_cast<uint16_t>(-1 - i);
+                        const std::vector<uint8_t> expected
+                        {
+                            static_cast<uint8_t>(0x39),
+                            static_cast<uint8_t>((positive >> 8) & 0xff),
+                            static_cast<uint8_t>(positive & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x39);
+                        const auto restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
+                        CHECK(restored == positive);
+                        CHECK(-1 - restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-9263 (int 16)")
+                {
+                    const json j = -9263;
+                    std::vector<uint8_t> expected = {0x39, 0x24, 0x2e};
+
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+
+                    const auto restored = static_cast<int16_t>(-1 - ((result[1] << 8) + result[2]));
+                    CHECK(restored == -9263);
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+
+                SECTION("-256..-24")
+                {
+                    for (auto i = -256; i < -24; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            0x38,
+                            static_cast<uint8_t>(-1 - i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x38);
+                        CHECK(static_cast<int16_t>(-1 - result[1]) == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-24..-1")
+                {
+                    for (auto i = -24; i <= -1; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            static_cast<uint8_t>(0x20 - 1 - static_cast<uint8_t>(i)),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 1);
+
+                        // check individual bytes
+                        CHECK(static_cast<int8_t>(0x20 - 1 - result[0]) == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("0..23")
+                {
+                    for (size_t i = 0; i <= 23; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 1);
+
+                        // check individual bytes
+                        CHECK(result[0] == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("24..255")
+                {
+                    for (size_t i = 24; i <= 255; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            static_cast<uint8_t>(0x18),
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x18);
+                        CHECK(result[1] == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("256..65535")
+                {
+                    for (size_t i = 256; i <= 65535; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            static_cast<uint8_t>(0x19),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x19);
+                        const auto restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("65536..4294967295")
+                {
+                    for (const uint32_t i :
+                            {
+                                65536u, 77777u, 1048576u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            0x1a,
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x1a);
+                        const uint32_t restored = (static_cast<uint32_t>(result[1]) << 030) +
+                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) +
+                                                  static_cast<uint32_t>(result[4]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("4294967296..4611686018427387903")
+                {
+                    for (const uint64_t i :
+                            {
+                                4294967296ul, 4611686018427387903ul
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            0x1b,
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x1b);
+                        const uint64_t restored = (static_cast<uint64_t>(result[1]) << 070) +
+                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) +
+                                                  (static_cast<uint64_t>(result[6]) << 020) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) +
+                                                  static_cast<uint64_t>(result[8]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-32768..-129 (int 16)")
+                {
+                    for (int16_t i = -32768; i <= static_cast<std::int16_t>(-129); ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            0xd1,
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xd1);
+                        const auto restored = static_cast<int16_t>((result[1] << 8) + result[2]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                    }
+                }
+            }
+
+            SECTION("unsigned")
+            {
+                SECTION("0..23 (Integer)")
+                {
+                    for (size_t i = 0; i <= 23; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 1);
+
+                        // check individual bytes
+                        CHECK(result[0] == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("24..255 (one-byte uint8_t)")
+                {
+                    for (size_t i = 24; i <= 255; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            0x18,
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x18);
+                        const auto restored = static_cast<uint8_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("256..65535 (two-byte uint16_t)")
+                {
+                    for (size_t i = 256; i <= 65535; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            0x19,
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x19);
+                        const auto restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("65536..4294967295 (four-byte uint32_t)")
+                {
+                    for (const uint32_t i :
+                            {
+                                65536u, 77777u, 1048576u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            0x1a,
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x1a);
+                        const uint32_t restored = (static_cast<uint32_t>(result[1]) << 030) +
+                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) +
+                                                  static_cast<uint32_t>(result[4]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+
+                SECTION("4294967296..4611686018427387903 (eight-byte uint64_t)")
+                {
+                    for (const uint64_t i :
+                            {
+                                4294967296ul, 4611686018427387903ul
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        const json j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        const std::vector<uint8_t> expected
+                        {
+                            0x1b,
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_cbor(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0x1b);
+                        const uint64_t restored = (static_cast<uint64_t>(result[1]) << 070) +
+                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) +
+                                                  (static_cast<uint64_t>(result[6]) << 020) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) +
+                                                  static_cast<uint64_t>(result[8]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_cbor(result) == j);
+                        CHECK(json::from_cbor(result, true, false) == j);
+                    }
+                }
+            }
+
+            SECTION("double-precision float")
+            {
+                SECTION("3.1415925")
+                {
+                    double v = 3.1415925;
+                    const json j = v;
+                    std::vector<uint8_t> expected =
+                    {
+                        0xfb, 0x40, 0x09, 0x21, 0xfb, 0x3f, 0xa6, 0xde, 0xfc
+                    };
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+
+            SECTION("single-precision float")
+            {
+                SECTION("0.5")
+                {
+                    double v = 0.5;
+                    const json j = v;
+                    // its double-precision float binary value is
+                    // {0xfb, 0x3f, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+                    // but to save memory, we can store it as single-precision float.
+                    const std::vector<uint8_t> expected = {0xfa, 0x3f, 0x00, 0x00, 0x00};
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+                SECTION("0.0")
+                {
+                    double v = 0.0;
+                    const json j = v;
+                    // its double-precision binary value is:
+                    // {0xfb, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+                    const std::vector<uint8_t> expected = {0xfa, 0x00, 0x00, 0x00, 0x00};
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+                SECTION("-0.0")
+                {
+                    double v = -0.0;
+                    const json j = v;
+                    // its double-precision binary value is:
+                    // {0xfb, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+                    const std::vector<uint8_t> expected = {0xfa, 0x80, 0x00, 0x00, 0x00};
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+                SECTION("100.0")
+                {
+                    double v = 100.0;
+                    const json j = v;
+                    // its double-precision binary value is:
+                    // {0xfb, 0x40, 0x59, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+                    const std::vector<uint8_t> expected = {0xfa, 0x42, 0xc8, 0x00, 0x00};
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+                SECTION("200.0")
+                {
+                    double v = 200.0;
+                    const json j = v;
+                    // its double-precision binary value is:
+                    // {0xfb, 0x40, 0x69, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+                    const std::vector<uint8_t> expected = {0xfa, 0x43, 0x48, 0x00, 0x00};
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+                SECTION("3.40282e+38(max float)")
+                {
+                    float v = (std::numeric_limits<float>::max)();
+                    const json j = v;
+                    const std::vector<uint8_t> expected =
+                    {
+                        0xfa, 0x7f, 0x7f, 0xff, 0xff
+                    };
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+                SECTION("-3.40282e+38(lowest float)")
+                {
+                    auto v = static_cast<double>(std::numeric_limits<float>::lowest());
+                    const json j = v;
+                    const std::vector<uint8_t> expected =
+                    {
+                        0xfa, 0xff, 0x7f, 0xff, 0xff
+                    };
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+                SECTION("1 + 3.40282e+38(more than max float)")
+                {
+                    double v = static_cast<double>((std::numeric_limits<float>::max)()) + 0.1e+34;
+                    const json j = v;
+                    const std::vector<uint8_t> expected =
+                    {
+                        0xfb, 0x47, 0xf0, 0x00, 0x03, 0x04, 0xdc, 0x64, 0x49
+                    };
+                    // double
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+                SECTION("-1 - 3.40282e+38(less than lowest float)")
+                {
+                    double v = static_cast<double>(std::numeric_limits<float>::lowest()) - 1.0;
+                    const json j = v;
+                    const std::vector<uint8_t> expected =
+                    {
+                        0xfa, 0xff, 0x7f, 0xff, 0xff
+                    };
+                    // the same with the lowest float
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result) == v);
+                }
+
+            }
+
+            SECTION("half-precision float (edge cases)")
+            {
+                SECTION("errors")
+                {
+                    SECTION("no byte follows")
+                    {
+                        json _;
+                        CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xf9})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+                        CHECK(json::from_cbor(std::vector<uint8_t>({0xf9}), true, false).is_discarded());
+                    }
+                    SECTION("only one byte follows")
+                    {
+                        json _;
+                        CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7c})), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+                        CHECK(json::from_cbor(std::vector<uint8_t>({0xf9, 0x7c}), true, false).is_discarded());
+                    }
+                }
+
+                SECTION("exp = 0b00000")
+                {
+                    SECTION("0 (0 00000 0000000000)")
+                    {
+                        json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x00, 0x00}));
+                        json::number_float_t d{j};
+                        CHECK(d == 0.0);
+                    }
+
+                    SECTION("-0 (1 00000 0000000000)")
+                    {
+                        json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x80, 0x00}));
+                        json::number_float_t d{j};
+                        CHECK(d == -0.0);
+                    }
+
+                    SECTION("2**-24 (0 00000 0000000001)")
+                    {
+                        json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x00, 0x01}));
+                        json::number_float_t d{j};
+                        CHECK(d == std::pow(2.0, -24.0));
+                    }
+                }
+
+                SECTION("exp = 0b11111")
+                {
+                    SECTION("infinity (0 11111 0000000000)")
+                    {
+                        json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7c, 0x00}));
+                        json::number_float_t d{j};
+                        CHECK(d == std::numeric_limits<json::number_float_t>::infinity());
+                        CHECK(j.dump() == "null");
+                    }
+
+                    SECTION("-infinity (1 11111 0000000000)")
+                    {
+                        json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0xfc, 0x00}));
+                        json::number_float_t d{j};
+                        CHECK(d == -std::numeric_limits<json::number_float_t>::infinity());
+                        CHECK(j.dump() == "null");
+                    }
+                }
+
+                SECTION("other values from https://en.wikipedia.org/wiki/Half-precision_floating-point_format")
+                {
+                    SECTION("1 (0 01111 0000000000)")
+                    {
+                        json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x3c, 0x00}));
+                        json::number_float_t d{j};
+                        CHECK(d == 1);
+                    }
+
+                    SECTION("-2 (1 10000 0000000000)")
+                    {
+                        json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0xc0, 0x00}));
+                        json::number_float_t d{j};
+                        CHECK(d == -2);
+                    }
+
+                    SECTION("65504 (0 11110 1111111111)")
+                    {
+                        json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7b, 0xff}));
+                        json::number_float_t d{j};
+                        CHECK(d == 65504);
+                    }
+                }
+
+                SECTION("infinity")
+                {
+                    json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7c, 0x00}));
+                    json::number_float_t const d{j};
+                    CHECK(!std::isfinite(d));
+                    CHECK(j.dump() == "null");
+                }
+
+                SECTION("NaN")
+                {
+                    json const j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7e, 0x00}));
+                    json::number_float_t const d{j};
+                    CHECK(std::isnan(d));
+                    CHECK(j.dump() == "null");
+                }
+            }
+        }
+
+        SECTION("string")
+        {
+            SECTION("N = 0..23")
+            {
+                for (size_t N = 0; N <= 0x17; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    const json j = s;
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back(static_cast<uint8_t>(0x60 + N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 1);
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 24..255")
+            {
+                for (size_t N = 24; N <= 255; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    const json j = s;
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+
+                    expected.push_back(0x78);
+                    expected.push_back(static_cast<uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 2);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 256..65535")
+            {
+                for (const size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 65535u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    const json j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), 0x79);
+
+                    // compare result + size
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 3);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 65536..4294967295")
+            {
+                for (const size_t N :
+                        {
+                            65536u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    const json j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 16) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 24) & 0xff));
+                    expected.insert(expected.begin(), 0x7a);
+
+                    // compare result + size
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 5);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty")
+            {
+                const json j = json::array();
+                std::vector<uint8_t> expected = {0x80};
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("[null]")
+            {
+                const json j = {nullptr};
+                const std::vector<uint8_t> expected = {0x81, 0xf6};
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("[1,2,3,4,5]")
+            {
+                const json j = json::parse("[1,2,3,4,5]");
+                const std::vector<uint8_t> expected = {0x85, 0x01, 0x02, 0x03, 0x04, 0x05};
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("[[[[]]]]")
+            {
+                const json j = json::parse("[[[[]]]]");
+                const std::vector<uint8_t> expected = {0x81, 0x81, 0x81, 0x80};
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("array with uint16_t elements")
+            {
+                const json j(257, nullptr);
+                std::vector<uint8_t> expected(j.size() + 3, 0xf6); // all null
+                expected[0] = 0x99; // array 16 bit
+                expected[1] = 0x01; // size (0x0101), byte 0
+                expected[2] = 0x01; // size (0x0101), byte 1
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("array with uint32_t elements")
+            {
+                const json j(65793, nullptr);
+                std::vector<uint8_t> expected(j.size() + 5, 0xf6); // all null
+                expected[0] = 0x9a; // array 32 bit
+                expected[1] = 0x00; // size (0x00010101), byte 0
+                expected[2] = 0x01; // size (0x00010101), byte 1
+                expected[3] = 0x01; // size (0x00010101), byte 2
+                expected[4] = 0x01; // size (0x00010101), byte 3
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty")
+            {
+                const json j = json::object();
+                const std::vector<uint8_t> expected = {0xa0};
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("{\"\":null}")
+            {
+                const json j = {{"", nullptr}};
+                const std::vector<uint8_t> expected = {0xa1, 0x60, 0xf6};
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("{\"a\": {\"b\": {\"c\": {}}}}")
+            {
+                const json j = json::parse(R"({"a": {"b": {"c": {}}}})");
+                const std::vector<uint8_t> expected =
+                {
+                    0xa1, 0x61, 0x61, 0xa1, 0x61, 0x62, 0xa1, 0x61, 0x63, 0xa0
+                };
+                const auto result = json::to_cbor(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("object with uint8_t elements")
+            {
+                json j;
+                for (auto i = 0; i < 255; ++i)
+                {
+                    // format i to a fixed width of 5
+                    // each entry will need 7 bytes: 6 for string, 1 for null
+                    std::stringstream ss;
+                    ss << std::setw(5) << std::setfill('0') << i;
+                    j.emplace(ss.str(), nullptr);
+                }
+
+                const auto result = json::to_cbor(j);
+
+                // Checking against an expected vector byte by byte is
+                // difficult, because no assumption on the order of key/value
+                // pairs are made. We therefore only check the prefix (type and
+                // size and the overall size. The rest is then handled in the
+                // roundtrip check.
+                CHECK(result.size() == 1787); // 1 type, 1 size, 255*7 content
+                CHECK(result[0] == 0xb8); // map 8 bit
+                CHECK(result[1] == 0xff); // size byte (0xff)
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("object with uint16_t elements")
+            {
+                json j;
+                for (auto i = 0; i < 256; ++i)
+                {
+                    // format i to a fixed width of 5
+                    // each entry will need 7 bytes: 6 for string, 1 for null
+                    std::stringstream ss;
+                    ss << std::setw(5) << std::setfill('0') << i;
+                    j.emplace(ss.str(), nullptr);
+                }
+
+                const auto result = json::to_cbor(j);
+
+                // Checking against an expected vector byte by byte is
+                // difficult, because no assumption on the order of key/value
+                // pairs are made. We therefore only check the prefix (type and
+                // size and the overall size. The rest is then handled in the
+                // roundtrip check.
+                CHECK(result.size() == 1795); // 1 type, 2 size, 256*7 content
+                CHECK(result[0] == 0xb9); // map 16 bit
+                CHECK(result[1] == 0x01); // byte 0 of size (0x0100)
+                CHECK(result[2] == 0x00); // byte 1 of size (0x0100)
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+
+            SECTION("object with uint32_t elements")
+            {
+                json j;
+                for (auto i = 0; i < 65536; ++i)
+                {
+                    // format i to a fixed width of 5
+                    // each entry will need 7 bytes: 6 for string, 1 for null
+                    std::stringstream ss;
+                    ss << std::setw(5) << std::setfill('0') << i;
+                    j.emplace(ss.str(), nullptr);
+                }
+
+                const auto result = json::to_cbor(j);
+
+                // Checking against an expected vector byte by byte is
+                // difficult, because no assumption on the order of key/value
+                // pairs are made. We therefore only check the prefix (type and
+                // size and the overall size. The rest is then handled in the
+                // roundtrip check.
+                CHECK(result.size() == 458757); // 1 type, 4 size, 65536*7 content
+                CHECK(result[0] == 0xba); // map 32 bit
+                CHECK(result[1] == 0x00); // byte 0 of size (0x00010000)
+                CHECK(result[2] == 0x01); // byte 1 of size (0x00010000)
+                CHECK(result[3] == 0x00); // byte 2 of size (0x00010000)
+                CHECK(result[4] == 0x00); // byte 3 of size (0x00010000)
+
+                // roundtrip
+                CHECK(json::from_cbor(result) == j);
+                CHECK(json::from_cbor(result, true, false) == j);
+            }
+        }
+
+        SECTION("binary")
+        {
+            SECTION("N = 0..23")
+            {
+                for (size_t N = 0; N <= 0x17; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<uint8_t>(N, 'x');
+                    const json j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back(static_cast<uint8_t>(0x40 + N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(0x78);
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 1);
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 24..255")
+            {
+                for (size_t N = 24; N <= 255; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::vector<uint8_t>(N, 'x');
+                    const json j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back(0x58);
+                    expected.push_back(static_cast<uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 2);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 256..65535")
+            {
+                for (const size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 65535u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::vector<uint8_t>(N, 'x');
+                    const json j = json::binary(s);
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), 0x59);
+
+                    // compare result + size
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 3);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 65536..4294967295")
+            {
+                for (const size_t N :
+                        {
+                            65536u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::vector<uint8_t>(N, 'x');
+                    const json j = json::binary(s);
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 16) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 24) & 0xff));
+                    expected.insert(expected.begin(), 0x5a);
+
+                    // compare result + size
+                    const auto result = json::to_cbor(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 5);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_cbor(result) == j);
+                    CHECK(json::from_cbor(result, true, false) == j);
+                }
+            }
+
+            SECTION("indefinite size")
+            {
+                std::vector<std::uint8_t> const input = {0x5F, 0x44, 0xaa, 0xbb, 0xcc, 0xdd, 0x43, 0xee, 0xff, 0x99, 0xFF};
+                auto j = json::from_cbor(input);
+                CHECK(j.is_binary());
+                auto k = json::binary({0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x99});
+                CAPTURE(j.dump(0, ' ', false, json::error_handler_t::strict))
+                CHECK(j == k);
+            }
+
+            SECTION("binary in array")
+            {
+                // array with three empty byte strings
+                std::vector<std::uint8_t> const input = {0x83, 0x40, 0x40, 0x40};
+                json _;
+                CHECK_NOTHROW(_ = json::from_cbor(input));
+            }
+
+            SECTION("binary in object")
+            {
+                // object mapping "foo" to empty byte string
+                std::vector<std::uint8_t> const input = {0xA1, 0x63, 0x66, 0x6F, 0x6F, 0x40};
+                json _;
+                CHECK_NOTHROW(_ = json::from_cbor(input));
+            }
+
+            SECTION("SAX callback with binary")
+            {
+                // object mapping "foo" to byte string
+                std::vector<std::uint8_t> const input = {0xA1, 0x63, 0x66, 0x6F, 0x6F, 0x41, 0x00};
+
+                // callback to set binary_seen to true if a binary value was seen
+                bool binary_seen = false;
+                auto callback = [&binary_seen](int /*depth*/, json::parse_event_t /*event*/, json & parsed) noexcept
+                {
+                    if (parsed.is_binary())
+                    {
+                        binary_seen = true;
+                    }
+                    return true;
+                };
+
+                json j;
+                auto cbp = nlohmann::detail::json_sax_dom_callback_parser<json, nlohmann::detail::string_input_adapter_type>(j, callback, true);
+                CHECK(json::sax_parse(input, &cbp, json::input_format_t::cbor));
+                CHECK(j.at("foo").is_binary());
+                CHECK(binary_seen);
+            }
+        }
+    }
+
+    SECTION("additional deserialization")
+    {
+        SECTION("0x5b (byte array)")
+        {
+            std::vector<uint8_t> const given = {0x5b, 0x00, 0x00, 0x00, 0x00,
+                                                0x00, 0x00, 0x00, 0x01, 0x61
+                                               };
+            const json j = json::from_cbor(given);
+            CHECK(j == json::binary(std::vector<uint8_t> {'a'}));
+        }
+
+        SECTION("0x7b (string)")
+        {
+            std::vector<uint8_t> const given = {0x7b, 0x00, 0x00, 0x00, 0x00,
+                                                0x00, 0x00, 0x00, 0x01, 0x61
+                                               };
+            const json j = json::from_cbor(given);
+            CHECK(j == "a");
+        }
+
+        SECTION("0x9b (array)")
+        {
+            std::vector<uint8_t> const given = {0x9b, 0x00, 0x00, 0x00, 0x00,
+                                                0x00, 0x00, 0x00, 0x01, 0xf4
+                                               };
+            const json j = json::from_cbor(given);
+            CHECK(j == json::parse("[false]"));
+        }
+
+        SECTION("0xbb (map)")
+        {
+            std::vector<uint8_t> const given = {0xbb, 0x00, 0x00, 0x00, 0x00,
+                                                0x00, 0x00, 0x00, 0x01, 0x60, 0xf4
+                                               };
+            const json j = json::from_cbor(given);
+            CHECK(j == json::parse("{\"\": false}"));
+        }
+    }
+
+    SECTION("errors")
+    {
+        SECTION("empty byte vector")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>()), "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing CBOR value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_cbor(std::vector<uint8_t>(), true, false).is_discarded());
+        }
+
+        SECTION("too short byte vector")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x18})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x19})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x19, 0x00})), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1a})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1a, 0x00})), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1a, 0x00, 0x00})), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1a, 0x00, 0x00, 0x00})), "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1b})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1b, 0x00})), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00})), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00})), "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0x00})), "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0x00, 0x00})), "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})), "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})), "[json.exception.parse_error.110] parse error at byte 9: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x62})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x62, 0x60})), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x7F})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x7F, 0x60})), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x82, 0x01})), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR value: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x9F, 0x01})), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR value: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xBF, 0x61, 0x61, 0xF5})), "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xA1, 0x61, 0X61})), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing CBOR value: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xBF, 0x61, 0X61})), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing CBOR value: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x5F})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR binary: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x5F, 0x00})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR binary: expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x00", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x41})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR binary: unexpected end of input", json::parse_error&);
+
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x18}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x19}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x19, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1a}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1a, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1a, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1a, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1b}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1b, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x62}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x62, 0x60}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x7F}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x7F, 0x60}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x82, 0x01}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x9F, 0x01}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0xBF, 0x61, 0x61, 0xF5}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0xA1, 0x61, 0x61}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0xBF, 0x61, 0x61}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x5F}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x5F, 0x00}), true, false).is_discarded());
+            CHECK(json::from_cbor(std::vector<uint8_t>({0x41}), true, false).is_discarded());
+        }
+
+        SECTION("unsupported bytes")
+        {
+            SECTION("concrete examples")
+            {
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0x1c})), "[json.exception.parse_error.112] parse error at byte 1: syntax error while parsing CBOR value: invalid byte: 0x1C", json::parse_error&);
+                CHECK(json::from_cbor(std::vector<uint8_t>({0x1c}), true, false).is_discarded());
+
+                CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xf8})), "[json.exception.parse_error.112] parse error at byte 1: syntax error while parsing CBOR value: invalid byte: 0xF8", json::parse_error&);
+                CHECK(json::from_cbor(std::vector<uint8_t>({0xf8}), true, false).is_discarded());
+            }
+
+            SECTION("all unsupported bytes")
+            {
+                for (const auto byte :
+                        {
+                            // ?
+                            0x1c, 0x1d, 0x1e, 0x1f,
+                            // ?
+                            0x3c, 0x3d, 0x3e, 0x3f,
+                            // ?
+                            0x5c, 0x5d, 0x5e,
+                            // ?
+                            0x7c, 0x7d, 0x7e,
+                            // ?
+                            0x9c, 0x9d, 0x9e,
+                            // ?
+                            0xbc, 0xbd, 0xbe,
+                            // date/time
+                            0xc0, 0xc1,
+                            // bignum
+                            0xc2, 0xc3,
+                            // fraction
+                            0xc4,
+                            // bigfloat
+                            0xc5,
+                            // tagged item
+                            0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4,
+                            // expected conversion
+                            0xd5, 0xd6, 0xd7,
+                            // more tagged items
+                            0xd8, 0xd9, 0xda, 0xdb,
+                            // ?
+                            0xdc, 0xdd, 0xde, 0xdf,
+                            // (simple value)
+                            0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3,
+                            // undefined
+                            0xf7,
+                            // simple value
+                            0xf8
+                        })
+                {
+                    json _;
+                    CHECK_THROWS_AS(_ = json::from_cbor(std::vector<uint8_t>({static_cast<uint8_t>(byte)})), json::parse_error&);
+                    CHECK(json::from_cbor(std::vector<uint8_t>({static_cast<uint8_t>(byte)}), true, false).is_discarded());
+                }
+            }
+        }
+
+        SECTION("invalid string in map")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xa1, 0xff, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xFF", json::parse_error&);
+            CHECK(json::from_cbor(std::vector<uint8_t>({0xa1, 0xff, 0x01}), true, false).is_discarded());
+        }
+
+        SECTION("strict mode")
+        {
+            std::vector<uint8_t> const vec = {0xf6, 0xf6};
+            SECTION("non-strict mode")
+            {
+                const auto result = json::from_cbor(vec, false);
+                CHECK(result == json());
+                CHECK(!json::from_cbor(vec, false, false).is_discarded());
+            }
+
+            SECTION("strict mode")
+            {
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR value: expected end of input; last byte: 0xF6", json::parse_error&);
+                CHECK(json::from_cbor(vec, true, false).is_discarded());
+            }
+        }
+    }
+
+    SECTION("SAX aborts")
+    {
+        SECTION("start_array(len)")
+        {
+            std::vector<uint8_t> const v = {0x83, 0x01, 0x02, 0x03};
+            SaxCountdown scp(0);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::cbor));
+        }
+
+        SECTION("start_object(len)")
+        {
+            std::vector<uint8_t> const v = {0xA1, 0x63, 0x66, 0x6F, 0x6F, 0xF4};
+            SaxCountdown scp(0);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::cbor));
+        }
+
+        SECTION("key()")
+        {
+            std::vector<uint8_t> const v = {0xA1, 0x63, 0x66, 0x6F, 0x6F, 0xF4};
+            SaxCountdown scp(1);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::cbor));
+        }
+    }
+}
+
+// use this testcase outside [hide] to run it with Valgrind
+TEST_CASE("single CBOR roundtrip")
+{
+    SECTION("sample.json")
+    {
+        std::string const filename = TEST_DATA_DIRECTORY "/json_testsuite/sample.json";
+
+        // parse JSON file
+        std::ifstream f_json(filename);
+        const json j1 = json::parse(f_json);
+
+        // parse CBOR file
+        auto packed = utils::read_binary_file(filename + ".cbor");
+        json j2;
+        CHECK_NOTHROW(j2 = json::from_cbor(packed));
+
+        // compare parsed JSON values
+        CHECK(j1 == j2);
+
+        SECTION("roundtrips")
+        {
+            SECTION("std::ostringstream")
+            {
+                std::basic_ostringstream<char> ss;
+                json::to_cbor(j1, ss);
+                json j3 = json::from_cbor(ss.str());
+                CHECK(j1 == j3);
+            }
+
+            SECTION("std::string")
+            {
+                std::string s;
+                json::to_cbor(j1, s);
+                json j3 = json::from_cbor(s);
+                CHECK(j1 == j3);
+            }
+        }
+
+        // check with different start index
+        packed.insert(packed.begin(), 5, 0xff);
+        CHECK(j1 == json::from_cbor(packed.begin() + 5, packed.end()));
+    }
+}
+
+#if !defined(JSON_NOEXCEPTION)
+TEST_CASE("CBOR regressions")
+{
+    SECTION("fuzz test results")
+    {
+        /*
+        The following test cases were found during a two-day session with
+        AFL-Fuzz. As a result, empty byte vectors and excessive lengths are
+        detected.
+        */
+        for (const std::string filename :
+                {
+                    TEST_DATA_DIRECTORY "/cbor_regression/test01",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test02",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test03",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test04",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test05",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test06",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test07",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test08",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test09",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test10",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test11",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test12",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test13",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test14",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test15",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test16",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test17",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test18",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test19",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test20",
+                    TEST_DATA_DIRECTORY "/cbor_regression/test21"
+                })
+        {
+            CAPTURE(filename)
+
+            try
+            {
+                // parse CBOR file
+                auto vec1 = utils::read_binary_file(filename);
+                json j1 = json::from_cbor(vec1);
+
+                try
+                {
+                    // step 2: round trip
+                    std::vector<uint8_t> const vec2 = json::to_cbor(j1);
+
+                    // parse serialization
+                    json j2 = json::from_cbor(vec2);
+
+                    // deserializations must match
+                    CHECK(j1 == j2);
+                }
+                catch (const json::parse_error&)
+                {
+                    // parsing a CBOR serialization must not fail
+                    CHECK(false);
+                }
+            }
+            catch (const json::parse_error&) // NOLINT(bugprone-empty-catch)
+            {
+                // parse errors are ok, because input may be random bytes
+            }
+        }
+    }
+}
+#endif
+
+TEST_CASE("CBOR roundtrips" * doctest::skip())
+{
+    SECTION("input from flynn")
+    {
+        // most of these are excluded due to differences in key order (not a real problem)
+        std::set<std::string> exclude_packed;
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/1.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/2.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/3.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/4.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/5.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json_testsuite/sample.json"); // kills AppVeyor
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json_tests/pass1.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/regression/working_file.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_long_strings.json");
+
+        for (const std::string filename :
+                {
+                    TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json",
+                    TEST_DATA_DIRECTORY "/json.org/1.json",
+                    TEST_DATA_DIRECTORY "/json.org/2.json",
+                    TEST_DATA_DIRECTORY "/json.org/3.json",
+                    TEST_DATA_DIRECTORY "/json.org/4.json",
+                    TEST_DATA_DIRECTORY "/json.org/5.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip01.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip02.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip03.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip04.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip05.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip06.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip07.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip08.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip09.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip10.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip11.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip12.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip13.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip14.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip15.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip16.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip17.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip18.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip19.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip20.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip21.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip22.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip23.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip24.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip25.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip26.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip27.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip28.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip29.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip30.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip31.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip32.json",
+                    TEST_DATA_DIRECTORY "/json_testsuite/sample.json", // kills AppVeyor
+                    TEST_DATA_DIRECTORY "/json_tests/pass1.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass2.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass3.json",
+                    TEST_DATA_DIRECTORY "/regression/floats.json",
+                    TEST_DATA_DIRECTORY "/regression/signed_ints.json",
+                    TEST_DATA_DIRECTORY "/regression/unsigned_ints.json",
+                    TEST_DATA_DIRECTORY "/regression/working_file.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_arraysWithSpaces.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_empty-string.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_empty.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_ending_with_newline.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_false.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_heterogeneous.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_null.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_1_and_newline.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_leading_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_several_null.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_trailing_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_0e+1.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_0e1.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_after_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_double_close_to_zero.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_double_huge_neg_exp.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_int_with_exp.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_minus_zero.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_int.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_one.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_zero.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e_neg_exp.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e_pos_exp.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_exponent.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_fraction_exponent.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_neg_exp.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_pos_exponent.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_underflow.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_simple_int.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_simple_real.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_too_big_neg_int.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_too_big_pos_int.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_very_big_negative_int.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_basic.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key_and_value.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_empty.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_empty_key.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_escaped_null_in_key.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_extreme_numbers.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_long_strings.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_simple.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_string_unicode.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_with_newlines.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_1_2_3_bytes_UTF-8_sequences.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_UTF-16_Surrogates_U+1D11E_MUSICAL_SYMBOL_G_CLEF.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pair.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pairs.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_allowed_escapes.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_backslash_and_u_escaped_zero.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_backslash_doublequotes.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_comments.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_double_escape_a.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_double_escape_n.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_escaped_control_character.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_escaped_noncharacter.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_in_array.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_in_array_with_leading_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_last_surrogates_1_and_2.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_newline_uescaped.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+10FFFF.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+1FFFF.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+FFFF.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_null_escape.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_one-byte-utf-8.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_pi.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_simple_ascii.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_three-byte-utf-8.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_two-byte-utf-8.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_u+2028_line_sep.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_u+2029_par_sep.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_uEscape.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unescaped_char_delete.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicodeEscapedBackslash.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_2.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_U+200B_ZERO_WIDTH_SPACE.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_U+2064_invisible_plus.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_escaped_double_quote.json",
+                    // TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_utf16.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_utf8.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_with_del_character.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_false.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_int.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_negative_real.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_null.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_string.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_true.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_string_empty.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_trailing_newline.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_true_in_array.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_whitespace_array.json"
+                })
+        {
+            CAPTURE(filename)
+
+            {
+                INFO_WITH_TEMP(filename + ": std::vector<uint8_t>");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse CBOR file
+                const auto packed = utils::read_binary_file(filename + ".cbor");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_cbor(packed));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": std::ifstream");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse CBOR file
+                std::ifstream f_cbor(filename + ".cbor", std::ios::binary);
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_cbor(f_cbor));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": uint8_t* and size");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse CBOR file
+                const auto packed = utils::read_binary_file(filename + ".cbor");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_cbor({packed.data(), packed.size()}));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": output to output adapters");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json const j1 = json::parse(f_json);
+
+                // parse CBOR file
+                const auto packed = utils::read_binary_file(filename + ".cbor");
+
+                if (exclude_packed.count(filename) == 0u)
+                {
+                    {
+                        INFO_WITH_TEMP(filename + ": output adapters: std::vector<uint8_t>");
+                        std::vector<uint8_t> vec;
+                        json::to_cbor(j1, vec);
+                        CHECK(vec == packed);
+                    }
+                }
+            }
+        }
+    }
+}
+
+#if !defined(JSON_NOEXCEPTION)
+TEST_CASE("all CBOR first bytes")
+{
+    // these bytes will fail immediately with exception parse_error.112
+    std::set<uint8_t> unsupported =
+    {
+        //// types not supported by this library
+
+        // date/time
+        0xc0, 0xc1,
+        // bignum
+        0xc2, 0xc3,
+        // decimal fracion
+        0xc4,
+        // bigfloat
+        0xc5,
+        // tagged item
+        0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd,
+        0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd8,
+        0xd9, 0xda, 0xdb,
+        // expected conversion
+        0xd5, 0xd6, 0xd7,
+        // simple value
+        0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+        0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xef, 0xf0,
+        0xf1, 0xf2, 0xf3,
+        0xf8,
+        // undefined
+        0xf7,
+
+        //// bytes not specified by CBOR
+
+        0x1c, 0x1d, 0x1e, 0x1f,
+        0x3c, 0x3d, 0x3e, 0x3f,
+        0x5c, 0x5d, 0x5e,
+        0x7c, 0x7d, 0x7e,
+        0x9c, 0x9d, 0x9e,
+        0xbc, 0xbd, 0xbe,
+        0xdc, 0xdd, 0xde, 0xdf,
+        0xee,
+        0xfc, 0xfe, 0xfd,
+
+        /// break cannot be the first byte
+
+        0xff
+    };
+
+    for (auto i = 0; i < 256; ++i)
+    {
+        const auto byte = static_cast<uint8_t>(i);
+
+        try
+        {
+            auto res = json::from_cbor(std::vector<uint8_t>(1, byte));
+        }
+        catch (const json::parse_error& e)
+        {
+            // check that parse_error.112 is only thrown if the
+            // first byte is in the unsupported set
+            INFO_WITH_TEMP(e.what());
+            if (unsupported.find(byte) != unsupported.end())
+            {
+                CHECK(e.id == 112);
+            }
+            else
+            {
+                CHECK(e.id != 112);
+            }
+        }
+    }
+}
+#endif
+
+TEST_CASE("examples from RFC 7049 Appendix A")
+{
+    SECTION("numbers")
+    {
+        CHECK(json::to_cbor(json::parse("0")) == std::vector<uint8_t>({0x00}));
+        CHECK(json::parse("0") == json::from_cbor(std::vector<uint8_t>({0x00})));
+
+        CHECK(json::to_cbor(json::parse("1")) == std::vector<uint8_t>({0x01}));
+        CHECK(json::parse("1") == json::from_cbor(std::vector<uint8_t>({0x01})));
+
+        CHECK(json::to_cbor(json::parse("10")) == std::vector<uint8_t>({0x0a}));
+        CHECK(json::parse("10") == json::from_cbor(std::vector<uint8_t>({0x0a})));
+
+        CHECK(json::to_cbor(json::parse("23")) == std::vector<uint8_t>({0x17}));
+        CHECK(json::parse("23") == json::from_cbor(std::vector<uint8_t>({0x17})));
+
+        CHECK(json::to_cbor(json::parse("24")) == std::vector<uint8_t>({0x18, 0x18}));
+        CHECK(json::parse("24") == json::from_cbor(std::vector<uint8_t>({0x18, 0x18})));
+
+        CHECK(json::to_cbor(json::parse("25")) == std::vector<uint8_t>({0x18, 0x19}));
+        CHECK(json::parse("25") == json::from_cbor(std::vector<uint8_t>({0x18, 0x19})));
+
+        CHECK(json::to_cbor(json::parse("100")) == std::vector<uint8_t>({0x18, 0x64}));
+        CHECK(json::parse("100") == json::from_cbor(std::vector<uint8_t>({0x18, 0x64})));
+
+        CHECK(json::to_cbor(json::parse("1000")) == std::vector<uint8_t>({0x19, 0x03, 0xe8}));
+        CHECK(json::parse("1000") == json::from_cbor(std::vector<uint8_t>({0x19, 0x03, 0xe8})));
+
+        CHECK(json::to_cbor(json::parse("1000000")) == std::vector<uint8_t>({0x1a, 0x00, 0x0f, 0x42, 0x40}));
+        CHECK(json::parse("1000000") == json::from_cbor(std::vector<uint8_t>({0x1a, 0x00, 0x0f, 0x42, 0x40})));
+
+        CHECK(json::to_cbor(json::parse("1000000000000")) == std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0xe8, 0xd4, 0xa5, 0x10, 0x00}));
+        CHECK(json::parse("1000000000000") == json::from_cbor(std::vector<uint8_t>({0x1b, 0x00, 0x00, 0x00, 0xe8, 0xd4, 0xa5, 0x10, 0x00})));
+
+        CHECK(json::to_cbor(json::parse("18446744073709551615")) == std::vector<uint8_t>({0x1b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}));
+        CHECK(json::parse("18446744073709551615") == json::from_cbor(std::vector<uint8_t>({0x1b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff})));
+
+        // positive bignum is not supported
+        //CHECK(json::to_cbor(json::parse("18446744073709551616")) == std::vector<uint8_t>({0xc2, 0x49, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}));
+        //CHECK(json::parse("18446744073709551616") == json::from_cbor(std::vector<uint8_t>({0xc2, 0x49, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})));
+
+        //CHECK(json::to_cbor(json::parse("-18446744073709551616")) == std::vector<uint8_t>({0x3b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}));
+        //CHECK(json::parse("-18446744073709551616") == json::from_cbor(std::vector<uint8_t>({0x3b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff})));
+
+        // negative bignum is not supported
+        //CHECK(json::to_cbor(json::parse("-18446744073709551617")) == std::vector<uint8_t>({0xc3, 0x49, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}));
+        //CHECK(json::parse("-18446744073709551617") == json::from_cbor(std::vector<uint8_t>({0xc3, 0x49, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})));
+
+        CHECK(json::to_cbor(json::parse("-1")) == std::vector<uint8_t>({0x20}));
+        CHECK(json::parse("-1") == json::from_cbor(std::vector<uint8_t>({0x20})));
+
+        CHECK(json::to_cbor(json::parse("-10")) == std::vector<uint8_t>({0x29}));
+        CHECK(json::parse("-10") == json::from_cbor(std::vector<uint8_t>({0x29})));
+
+        CHECK(json::to_cbor(json::parse("-100")) == std::vector<uint8_t>({0x38, 0x63}));
+        CHECK(json::parse("-100") == json::from_cbor(std::vector<uint8_t>({0x38, 0x63})));
+
+        CHECK(json::to_cbor(json::parse("-1000")) == std::vector<uint8_t>({0x39, 0x03, 0xe7}));
+        CHECK(json::parse("-1000") == json::from_cbor(std::vector<uint8_t>({0x39, 0x03, 0xe7})));
+
+        // half-precision float
+        //CHECK(json::to_cbor(json::parse("0.0")) == std::vector<uint8_t>({0xf9, 0x00, 0x00}));
+        CHECK(json::parse("0.0") == json::from_cbor(std::vector<uint8_t>({0xf9, 0x00, 0x00})));
+
+        // half-precision float
+        //CHECK(json::to_cbor(json::parse("-0.0")) == std::vector<uint8_t>({0xf9, 0x80, 0x00}));
+        CHECK(json::parse("-0.0") == json::from_cbor(std::vector<uint8_t>({0xf9, 0x80, 0x00})));
+
+        // half-precision float
+        //CHECK(json::to_cbor(json::parse("1.0")) == std::vector<uint8_t>({0xf9, 0x3c, 0x00}));
+        CHECK(json::parse("1.0") == json::from_cbor(std::vector<uint8_t>({0xf9, 0x3c, 0x00})));
+
+        CHECK(json::to_cbor(json::parse("1.1")) == std::vector<uint8_t>({0xfb, 0x3f, 0xf1, 0x99, 0x99, 0x99, 0x99, 0x99, 0x9a}));
+        CHECK(json::parse("1.1") == json::from_cbor(std::vector<uint8_t>({0xfb, 0x3f, 0xf1, 0x99, 0x99, 0x99, 0x99, 0x99, 0x9a})));
+
+        // half-precision float
+        //CHECK(json::to_cbor(json::parse("1.5")) == std::vector<uint8_t>({0xf9, 0x3e, 0x00}));
+        CHECK(json::parse("1.5") == json::from_cbor(std::vector<uint8_t>({0xf9, 0x3e, 0x00})));
+
+        // half-precision float
+        //CHECK(json::to_cbor(json::parse("65504.0")) == std::vector<uint8_t>({0xf9, 0x7b, 0xff}));
+        CHECK(json::parse("65504.0") == json::from_cbor(std::vector<uint8_t>({0xf9, 0x7b, 0xff})));
+
+        //CHECK(json::to_cbor(json::parse("100000.0")) == std::vector<uint8_t>({0xfa, 0x47, 0xc3, 0x50, 0x00}));
+        CHECK(json::parse("100000.0") == json::from_cbor(std::vector<uint8_t>({0xfa, 0x47, 0xc3, 0x50, 0x00})));
+
+        //CHECK(json::to_cbor(json::parse("3.4028234663852886e+38")) == std::vector<uint8_t>({0xfa, 0x7f, 0x7f, 0xff, 0xff}));
+        CHECK(json::parse("3.4028234663852886e+38") == json::from_cbor(std::vector<uint8_t>({0xfa, 0x7f, 0x7f, 0xff, 0xff})));
+
+        CHECK(json::to_cbor(json::parse("1.0e+300")) == std::vector<uint8_t>({0xfb, 0x7e, 0x37, 0xe4, 0x3c, 0x88, 0x00, 0x75, 0x9c}));
+        CHECK(json::parse("1.0e+300") == json::from_cbor(std::vector<uint8_t>({0xfb, 0x7e, 0x37, 0xe4, 0x3c, 0x88, 0x00, 0x75, 0x9c})));
+
+        // half-precision float
+        //CHECK(json::to_cbor(json::parse("5.960464477539063e-8")) == std::vector<uint8_t>({0xf9, 0x00, 0x01}));
+        CHECK(json::parse("-4.0") == json::from_cbor(std::vector<uint8_t>({0xf9, 0xc4, 0x00})));
+
+        // half-precision float
+        //CHECK(json::to_cbor(json::parse("0.00006103515625")) == std::vector<uint8_t>({0xf9, 0x04, 0x00}));
+        CHECK(json::parse("-4.0") == json::from_cbor(std::vector<uint8_t>({0xf9, 0xc4, 0x00})));
+
+        // half-precision float
+        //CHECK(json::to_cbor(json::parse("-4.0")) == std::vector<uint8_t>({0xf9, 0xc4, 0x00}));
+        CHECK(json::parse("-4.0") == json::from_cbor(std::vector<uint8_t>({0xf9, 0xc4, 0x00})));
+
+        CHECK(json::to_cbor(json::parse("-4.1")) == std::vector<uint8_t>({0xfb, 0xc0, 0x10, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66}));
+        CHECK(json::parse("-4.1") == json::from_cbor(std::vector<uint8_t>({0xfb, 0xc0, 0x10, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66})));
+    }
+
+    SECTION("simple values")
+    {
+        CHECK(json::to_cbor(json::parse("false")) == std::vector<uint8_t>({0xf4}));
+        CHECK(json::parse("false") == json::from_cbor(std::vector<uint8_t>({0xf4})));
+
+        CHECK(json::to_cbor(json::parse("true")) == std::vector<uint8_t>({0xf5}));
+        CHECK(json::parse("true") == json::from_cbor(std::vector<uint8_t>({0xf5})));
+
+        CHECK(json::to_cbor(json::parse("true")) == std::vector<uint8_t>({0xf5}));
+        CHECK(json::parse("true") == json::from_cbor(std::vector<uint8_t>({0xf5})));
+    }
+
+    SECTION("strings")
+    {
+        CHECK(json::to_cbor(json::parse("\"\"")) == std::vector<uint8_t>({0x60}));
+        CHECK(json::parse("\"\"") == json::from_cbor(std::vector<uint8_t>({0x60})));
+
+        CHECK(json::to_cbor(json::parse("\"a\"")) == std::vector<uint8_t>({0x61, 0x61}));
+        CHECK(json::parse("\"a\"") == json::from_cbor(std::vector<uint8_t>({0x61, 0x61})));
+
+        CHECK(json::to_cbor(json::parse("\"IETF\"")) == std::vector<uint8_t>({0x64, 0x49, 0x45, 0x54, 0x46}));
+        CHECK(json::parse("\"IETF\"") == json::from_cbor(std::vector<uint8_t>({0x64, 0x49, 0x45, 0x54, 0x46})));
+
+        CHECK(json::to_cbor(json::parse("\"\\u00fc\"")) == std::vector<uint8_t>({0x62, 0xc3, 0xbc}));
+        CHECK(json::parse("\"\\u00fc\"") == json::from_cbor(std::vector<uint8_t>({0x62, 0xc3, 0xbc})));
+
+        CHECK(json::to_cbor(json::parse("\"\\u6c34\"")) == std::vector<uint8_t>({0x63, 0xe6, 0xb0, 0xb4}));
+        CHECK(json::parse("\"\\u6c34\"") == json::from_cbor(std::vector<uint8_t>({0x63, 0xe6, 0xb0, 0xb4})));
+
+        CHECK(json::to_cbor(json::parse("\"\\ud800\\udd51\"")) == std::vector<uint8_t>({0x64, 0xf0, 0x90, 0x85, 0x91}));
+        CHECK(json::parse("\"\\ud800\\udd51\"") == json::from_cbor(std::vector<uint8_t>({0x64, 0xf0, 0x90, 0x85, 0x91})));
+
+        // indefinite length strings
+        CHECK(json::parse("\"streaming\"") == json::from_cbor(std::vector<uint8_t>({0x7f, 0x65, 0x73, 0x74, 0x72, 0x65, 0x61, 0x64, 0x6d, 0x69, 0x6e, 0x67, 0xff})));
+    }
+
+    SECTION("byte arrays")
+    {
+        const auto packed = utils::read_binary_file(TEST_DATA_DIRECTORY "/binary_data/cbor_binary.cbor");
+        json j;
+        CHECK_NOTHROW(j = json::from_cbor(packed));
+
+        const auto expected = utils::read_binary_file(TEST_DATA_DIRECTORY "/binary_data/cbor_binary.out");
+        CHECK(j == json::binary(expected));
+
+        // 0xd8
+        CHECK(json::to_cbor(json::binary(std::vector<uint8_t> {}, 0x42)) == std::vector<uint8_t> {0xd8, 0x42, 0x40});
+        CHECK(!json::from_cbor(json::to_cbor(json::binary(std::vector<uint8_t> {}, 0x42)), true, true, json::cbor_tag_handler_t::ignore).get_binary().has_subtype());
+        CHECK(json::from_cbor(json::to_cbor(json::binary(std::vector<uint8_t> {}, 0x42)), true, true, json::cbor_tag_handler_t::store).get_binary().subtype() == 0x42);
+        // 0xd9
+        CHECK(json::to_cbor(json::binary(std::vector<uint8_t> {}, 1000)) == std::vector<uint8_t> {0xd9, 0x03, 0xe8, 0x40});
+        CHECK(!json::from_cbor(json::to_cbor(json::binary(std::vector<uint8_t> {}, 1000)), true, true, json::cbor_tag_handler_t::ignore).get_binary().has_subtype());
+        CHECK(json::from_cbor(json::to_cbor(json::binary(std::vector<uint8_t> {}, 1000)), true, true, json::cbor_tag_handler_t::store).get_binary().subtype() == 1000);
+        // 0xda
+        CHECK(json::to_cbor(json::binary(std::vector<uint8_t> {}, 394216)) == std::vector<uint8_t> {0xda, 0x00, 0x06, 0x03, 0xe8, 0x40});
+        CHECK(!json::from_cbor(json::to_cbor(json::binary(std::vector<uint8_t> {}, 394216)), true, true, json::cbor_tag_handler_t::ignore).get_binary().has_subtype());
+        CHECK(json::from_cbor(json::to_cbor(json::binary(std::vector<uint8_t> {}, 394216)), true, true, json::cbor_tag_handler_t::store).get_binary().subtype() == 394216);
+        // 0xdb
+        CHECK(json::to_cbor(json::binary(std::vector<uint8_t> {}, 8589934590)) == std::vector<uint8_t> {0xdb, 0x00, 0x00, 0x00, 0x01, 0xff, 0xff, 0xff, 0xfe, 0x40});
+        CHECK(!json::from_cbor(json::to_cbor(json::binary(std::vector<uint8_t> {}, 8589934590)), true, true, json::cbor_tag_handler_t::ignore).get_binary().has_subtype());
+        CHECK(json::from_cbor(json::to_cbor(json::binary(std::vector<uint8_t> {}, 8589934590)), true, true, json::cbor_tag_handler_t::store).get_binary().subtype() == 8589934590);
+    }
+
+    SECTION("arrays")
+    {
+        CHECK(json::to_cbor(json::parse("[]")) == std::vector<uint8_t>({0x80}));
+        CHECK(json::parse("[]") == json::from_cbor(std::vector<uint8_t>({0x80})));
+
+        CHECK(json::to_cbor(json::parse("[1, 2, 3]")) == std::vector<uint8_t>({0x83, 0x01, 0x02, 0x03}));
+        CHECK(json::parse("[1, 2, 3]") == json::from_cbor(std::vector<uint8_t>({0x83, 0x01, 0x02, 0x03})));
+
+        CHECK(json::to_cbor(json::parse("[1, [2, 3], [4, 5]]")) == std::vector<uint8_t>({0x83, 0x01, 0x82, 0x02, 0x03, 0x82, 0x04, 0x05}));
+        CHECK(json::parse("[1, [2, 3], [4, 5]]") == json::from_cbor(std::vector<uint8_t>({0x83, 0x01, 0x82, 0x02, 0x03, 0x82, 0x04, 0x05})));
+
+        CHECK(json::to_cbor(json::parse("[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25]")) == std::vector<uint8_t>({0x98, 0x19, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x18, 0x18, 0x19}));
+        CHECK(json::parse("[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25]") == json::from_cbor(std::vector<uint8_t>({0x98, 0x19, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x18, 0x18, 0x19})));
+
+        // indefinite length arrays
+        CHECK(json::parse("[]") == json::from_cbor(std::vector<uint8_t>({0x9f, 0xff})));
+        CHECK(json::parse("[1, [2, 3], [4, 5]] ") == json::from_cbor(std::vector<uint8_t>({0x9f, 0x01, 0x82, 0x02, 0x03, 0x9f, 0x04, 0x05, 0xff, 0xff})));
+        CHECK(json::parse("[1, [2, 3], [4, 5]]") == json::from_cbor(std::vector<uint8_t>({0x9f, 0x01, 0x82, 0x02, 0x03, 0x82, 0x04, 0x05, 0xff})));
+        CHECK(json::parse("[1, [2, 3], [4, 5]]") == json::from_cbor(std::vector<uint8_t>({0x83, 0x01, 0x82, 0x02, 0x03, 0x9f, 0x04, 0x05, 0xff})));
+        CHECK(json::parse("[1, [2, 3], [4, 5]]") == json::from_cbor(std::vector<uint8_t>({0x83, 0x01, 0x9f, 0x02, 0x03, 0xff, 0x82, 0x04, 0x05})));
+        CHECK(json::parse("[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25]") == json::from_cbor(std::vector<uint8_t>({0x9f, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x18, 0x18, 0x19, 0xff})));
+    }
+
+    SECTION("objects")
+    {
+        CHECK(json::to_cbor(json::parse("{}")) == std::vector<uint8_t>({0xa0}));
+        CHECK(json::parse("{}") == json::from_cbor(std::vector<uint8_t>({0xa0})));
+
+        CHECK(json::to_cbor(json::parse("{\"a\": 1, \"b\": [2, 3]}")) == std::vector<uint8_t>({0xa2, 0x61, 0x61, 0x01, 0x61, 0x62, 0x82, 0x02, 0x03}));
+        CHECK(json::parse("{\"a\": 1, \"b\": [2, 3]}") == json::from_cbor(std::vector<uint8_t>({0xa2, 0x61, 0x61, 0x01, 0x61, 0x62, 0x82, 0x02, 0x03})));
+
+        CHECK(json::to_cbor(json::parse("[\"a\", {\"b\": \"c\"}]")) == std::vector<uint8_t>({0x82, 0x61, 0x61, 0xa1, 0x61, 0x62, 0x61, 0x63}));
+        CHECK(json::parse("[\"a\", {\"b\": \"c\"}]") == json::from_cbor(std::vector<uint8_t>({0x82, 0x61, 0x61, 0xa1, 0x61, 0x62, 0x61, 0x63})));
+
+        CHECK(json::to_cbor(json::parse("{\"a\": \"A\", \"b\": \"B\", \"c\": \"C\", \"d\": \"D\", \"e\": \"E\"}")) == std::vector<uint8_t>({0xa5, 0x61, 0x61, 0x61, 0x41, 0x61, 0x62, 0x61, 0x42, 0x61, 0x63, 0x61, 0x43, 0x61, 0x64, 0x61, 0x44, 0x61, 0x65, 0x61, 0x45}));
+        CHECK(json::parse("{\"a\": \"A\", \"b\": \"B\", \"c\": \"C\", \"d\": \"D\", \"e\": \"E\"}") == json::from_cbor(std::vector<uint8_t>({0xa5, 0x61, 0x61, 0x61, 0x41, 0x61, 0x62, 0x61, 0x42, 0x61, 0x63, 0x61, 0x43, 0x61, 0x64, 0x61, 0x44, 0x61, 0x65, 0x61, 0x45})));
+
+        // indefinite length objects
+        CHECK(json::parse("{\"a\": 1, \"b\": [2, 3]}") == json::from_cbor(std::vector<uint8_t>({0xbf, 0x61, 0x61, 0x01, 0x61, 0x62, 0x9f, 0x02, 0x03, 0xff, 0xff})));
+        CHECK(json::parse("[\"a\", {\"b\": \"c\"}]") == json::from_cbor(std::vector<uint8_t>({0x82, 0x61, 0x61, 0xbf, 0x61, 0x62, 0x61, 0x63, 0xff})));
+        CHECK(json::parse("{\"Fun\": true, \"Amt\": -2}") == json::from_cbor(std::vector<uint8_t>({0xbf, 0x63, 0x46, 0x75, 0x6e, 0xf5, 0x63, 0x41, 0x6d, 0x74, 0x21, 0xff})));
+    }
+}
+
+TEST_CASE("Tagged values")
+{
+    const json j = "s";
+    auto v = json::to_cbor(j);
+
+    SECTION("0xC6..0xD4")
+    {
+        for (const auto b : std::vector<std::uint8_t>
+    {
+        0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4
+    })
+        {
+            CAPTURE(b);
+
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), b);
+
+            // check that parsing fails in error mode
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+
+            // check that parsing succeeds and gets original value in ignore mode
+            auto j_tagged = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore);
+            CHECK(j_tagged == j);
+
+            auto j_tagged_stored = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::store);
+            CHECK(j_tagged_stored == j);
+        }
+    }
+
+    SECTION("0xD8 - 1 byte follows")
+    {
+        SECTION("success")
+        {
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), 0x42); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0xD8); // tag
+
+            // check that parsing fails in error mode
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+
+            // check that parsing succeeds and gets original value in ignore mode
+            auto j_tagged = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore);
+            CHECK(j_tagged == j);
+        }
+
+        SECTION("missing byte after tag")
+        {
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), 0xD8); // tag
+
+            // check that parsing fails in all modes
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore), json::parse_error);
+        }
+    }
+
+    SECTION("0xD9 - 2 byte follow")
+    {
+        SECTION("success")
+        {
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), 0x42); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x23); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0xD9); // tag
+
+            // check that parsing fails in error mode
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+
+            // check that parsing succeeds and gets original value in ignore mode
+            auto j_tagged = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore);
+            CHECK(j_tagged == j);
+        }
+
+        SECTION("missing byte after tag")
+        {
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), 0x23); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0xD9); // tag
+
+            // check that parsing fails in all modes
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore), json::parse_error);
+        }
+    }
+
+    SECTION("0xDA - 4 bytes follow")
+    {
+        SECTION("success")
+        {
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), 0x42); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x23); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x22); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x11); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0xDA); // tag
+
+            // check that parsing fails in error mode
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+
+            // check that parsing succeeds and gets original value in ignore mode
+            auto j_tagged = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore);
+            CHECK(j_tagged == j);
+        }
+
+        SECTION("missing bytes after tag")
+        {
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), 0x23); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x22); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x11); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0xDA); // tag
+
+            // check that parsing fails in all modes
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore), json::parse_error);
+        }
+    }
+
+    SECTION("0xDB - 8 bytes follow")
+    {
+        SECTION("success")
+        {
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), 0x42); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x23); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x22); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x11); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x42); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x23); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x22); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x11); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0xDB); // tag
+
+            // check that parsing fails in error mode
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+
+            // check that parsing succeeds and gets original value in ignore mode
+            auto j_tagged = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore);
+            CHECK(j_tagged == j);
+        }
+
+        SECTION("missing byte after tag")
+        {
+            // add tag to value
+            auto v_tagged = v;
+            v_tagged.insert(v_tagged.begin(), 0x42); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x23); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x22); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x11); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x23); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x22); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0x11); // 1 byte
+            v_tagged.insert(v_tagged.begin(), 0xDB); // tag
+
+            // check that parsing fails in all modes
+            json _;
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::error), json::parse_error);
+            CHECK_THROWS_AS(_ = json::from_cbor(v_tagged, true, true, json::cbor_tag_handler_t::ignore), json::parse_error);
+        }
+    }
+
+    SECTION("tagged binary")
+    {
+        // create a binary value of subtype 42
+        json j_binary;
+        j_binary["binary"] = json::binary({0xCA, 0xFE, 0xBA, 0xBE}, 42);
+
+        // convert to CBOR
+        const auto vec = json::to_cbor(j_binary);
+        CHECK(vec == std::vector<std::uint8_t> {0xA1, 0x66, 0x62, 0x69, 0x6E, 0x61, 0x72, 0x79, 0xD8, 0x2A, 0x44, 0xCA, 0xFE, 0xBA, 0xBE});
+
+        // parse error when parsing tagged value
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec), "[json.exception.parse_error.112] parse error at byte 9: syntax error while parsing CBOR value: invalid byte: 0xD8", json::parse_error);
+
+        // binary without subtype when tags are ignored
+        json jb = json::from_cbor(vec, true, true, json::cbor_tag_handler_t::ignore);
+        CHECK(jb.is_object());
+        CHECK(jb["binary"].is_binary());
+        CHECK(!jb["binary"].get_binary().has_subtype());
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_const_iterator.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_const_iterator.cpp
new file mode 100644
index 00000000..6b5f989c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_const_iterator.cpp
@@ -0,0 +1,393 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("const_iterator class")
+{
+    SECTION("construction")
+    {
+        SECTION("constructor")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator const it(&j);
+            }
+
+            SECTION("object")
+            {
+                json const j(json::value_t::object);
+                json::const_iterator const it(&j);
+            }
+
+            SECTION("array")
+            {
+                json const j(json::value_t::array);
+                json::const_iterator const it(&j);
+            }
+        }
+
+        SECTION("copy assignment")
+        {
+            json const j(json::value_t::null);
+            json::const_iterator const it(&j);
+            json::const_iterator it2(&j);
+            it2 = it;
+        }
+
+        SECTION("copy constructor from non-const iterator")
+        {
+            SECTION("create from uninitialized iterator")
+            {
+                const json::iterator it {};
+                json::const_iterator const cit(it);
+            }
+
+            SECTION("create from initialized iterator")
+            {
+                json j;
+                const json::iterator it = j.begin();
+                json::const_iterator const cit(it);
+            }
+        }
+    }
+
+    SECTION("initialization")
+    {
+        SECTION("set_begin")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator it(&j);
+                it.set_begin();
+                CHECK((it == j.cbegin()));
+            }
+
+            SECTION("object")
+            {
+                json const j(json::value_t::object);
+                json::const_iterator it(&j);
+                it.set_begin();
+                CHECK((it == j.cbegin()));
+            }
+
+            SECTION("array")
+            {
+                json const j(json::value_t::array);
+                json::const_iterator it(&j);
+                it.set_begin();
+                CHECK((it == j.cbegin()));
+            }
+        }
+
+        SECTION("set_end")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator it(&j);
+                it.set_end();
+                CHECK((it == j.cend()));
+            }
+
+            SECTION("object")
+            {
+                json const j(json::value_t::object);
+                json::const_iterator it(&j);
+                it.set_end();
+                CHECK((it == j.cend()));
+            }
+
+            SECTION("array")
+            {
+                json const j(json::value_t::array);
+                json::const_iterator it(&j);
+                it.set_end();
+                CHECK((it == j.cend()));
+            }
+        }
+    }
+
+    SECTION("element access")
+    {
+        SECTION("operator*")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator const it = j.cbegin();
+                CHECK_THROWS_WITH_AS(*it, "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+
+            SECTION("number")
+            {
+                json const j(17);
+                json::const_iterator it = j.cbegin();
+                CHECK(*it == json(17));
+                it = j.cend();
+                CHECK_THROWS_WITH_AS(*it, "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+
+            SECTION("object")
+            {
+                json const j({{"foo", "bar"}});
+                json::const_iterator const it = j.cbegin();
+                CHECK(*it == json("bar"));
+            }
+
+            SECTION("array")
+            {
+                json const j({1, 2, 3, 4});
+                json::const_iterator const it = j.cbegin();
+                CHECK(*it == json(1));
+            }
+        }
+
+        SECTION("operator->")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator const it = j.cbegin();
+                CHECK_THROWS_WITH_AS(std::string(it->type_name()), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+
+            SECTION("number")
+            {
+                json const j(17);
+                json::const_iterator it = j.cbegin();
+                CHECK(std::string(it->type_name()) == "number");
+                it = j.cend();
+                CHECK_THROWS_WITH_AS(std::string(it->type_name()), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+
+            SECTION("object")
+            {
+                json const j({{"foo", "bar"}});
+                json::const_iterator const it = j.cbegin();
+                CHECK(std::string(it->type_name()) == "string");
+            }
+
+            SECTION("array")
+            {
+                json const j({1, 2, 3, 4});
+                json::const_iterator const it = j.cbegin();
+                CHECK(std::string(it->type_name()) == "number");
+            }
+        }
+    }
+
+    SECTION("increment/decrement")
+    {
+        SECTION("post-increment")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator it = j.cbegin();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                it++;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("number")
+            {
+                json const j(17);
+                json::const_iterator it = j.cbegin();
+                CHECK((it.m_it.primitive_iterator.m_it == 0));
+                it++;
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                it++;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("object")
+            {
+                json const j({{"foo", "bar"}});
+                json::const_iterator it = j.cbegin();
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
+                it++;
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
+            }
+
+            SECTION("array")
+            {
+                json const j({1, 2, 3, 4});
+                json::const_iterator it = j.cbegin();
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
+                it++;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it++;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it++;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it++;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
+            }
+        }
+
+        SECTION("pre-increment")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator it = j.cbegin();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                ++it;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("number")
+            {
+                json const j(17);
+                json::const_iterator it = j.cbegin();
+                CHECK((it.m_it.primitive_iterator.m_it == 0));
+                ++it;
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                ++it;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("object")
+            {
+                json const j({{"foo", "bar"}});
+                json::const_iterator it = j.cbegin();
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
+                ++it;
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
+            }
+
+            SECTION("array")
+            {
+                json const j({1, 2, 3, 4});
+                json::const_iterator it = j.cbegin();
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
+                ++it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                ++it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                ++it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                ++it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
+            }
+        }
+
+        SECTION("post-decrement")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator const it = j.cend();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+            }
+
+            SECTION("number")
+            {
+                json const j(17);
+                json::const_iterator it = j.cend();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                it--;
+                CHECK((it.m_it.primitive_iterator.m_it == 0));
+                it--;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("object")
+            {
+                json const j({{"foo", "bar"}});
+                json::const_iterator it = j.cend();
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
+                it--;
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
+            }
+
+            SECTION("array")
+            {
+                json const j({1, 2, 3, 4});
+                json::const_iterator it = j.cend();
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
+                it--;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it--;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it--;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it--;
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+            }
+        }
+
+        SECTION("pre-decrement")
+        {
+            SECTION("null")
+            {
+                json const j(json::value_t::null);
+                json::const_iterator const it = j.cend();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+            }
+
+            SECTION("number")
+            {
+                json const j(17);
+                json::const_iterator it = j.cend();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                --it;
+                CHECK((it.m_it.primitive_iterator.m_it == 0));
+                --it;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("object")
+            {
+                json const j({{"foo", "bar"}});
+                json::const_iterator it = j.cend();
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
+                --it;
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
+            }
+
+            SECTION("array")
+            {
+                json const j({1, 2, 3, 4});
+                json::const_iterator it = j.cend();
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
+                --it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                --it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                --it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                --it;
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_iterator.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_iterator.cpp
new file mode 100644
index 00000000..ef49665e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_iterator.cpp
@@ -0,0 +1,468 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+template<typename Iter>
+using can_post_increment_temporary = decltype((std::declval<Iter>()++)++);
+
+template<typename Iter>
+using can_post_decrement_temporary = decltype((std::declval<Iter>()--)--);
+
+TEST_CASE("iterator class")
+{
+    SECTION("construction")
+    {
+        SECTION("constructor")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator const it(&j);
+            }
+
+            SECTION("object")
+            {
+                json j(json::value_t::object);
+                json::iterator const it(&j);
+            }
+
+            SECTION("array")
+            {
+                json j(json::value_t::array);
+                json::iterator const it(&j);
+            }
+        }
+
+        SECTION("copy assignment")
+        {
+            json j(json::value_t::null);
+            json::iterator const it(&j);
+            json::iterator it2(&j);
+            it2 = it;
+        }
+    }
+
+    SECTION("initialization")
+    {
+        SECTION("set_begin")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator it(&j);
+                it.set_begin();
+                CHECK((it == j.begin()));
+            }
+
+            SECTION("object")
+            {
+                json j(json::value_t::object);
+                json::iterator it(&j);
+                it.set_begin();
+                CHECK((it == j.begin()));
+            }
+
+            SECTION("array")
+            {
+                json j(json::value_t::array);
+                json::iterator it(&j);
+                it.set_begin();
+                CHECK((it == j.begin()));
+            }
+        }
+
+        SECTION("set_end")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator it(&j);
+                it.set_end();
+                CHECK((it == j.end()));
+            }
+
+            SECTION("object")
+            {
+                json j(json::value_t::object);
+                json::iterator it(&j);
+                it.set_end();
+                CHECK((it == j.end()));
+            }
+
+            SECTION("array")
+            {
+                json j(json::value_t::array);
+                json::iterator it(&j);
+                it.set_end();
+                CHECK((it == j.end()));
+            }
+        }
+    }
+
+    SECTION("element access")
+    {
+        SECTION("operator*")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator const it = j.begin();
+                CHECK_THROWS_WITH_AS(*it, "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+
+            SECTION("number")
+            {
+                json j(17);
+                json::iterator it = j.begin();
+                CHECK(*it == json(17));
+                it = j.end();
+                CHECK_THROWS_WITH_AS(*it, "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+
+            SECTION("object")
+            {
+                json j({{"foo", "bar"}});
+                json::iterator const it = j.begin();
+                CHECK(*it == json("bar"));
+            }
+
+            SECTION("array")
+            {
+                json j({1, 2, 3, 4});
+                json::iterator const it = j.begin();
+                CHECK(*it == json(1));
+            }
+        }
+
+        SECTION("operator->")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator const it = j.begin();
+                CHECK_THROWS_WITH_AS(std::string(it->type_name()), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+
+            SECTION("number")
+            {
+                json j(17);
+                json::iterator it = j.begin();
+                CHECK(std::string(it->type_name()) == "number");
+                it = j.end();
+                CHECK_THROWS_WITH_AS(std::string(it->type_name()), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+
+            SECTION("object")
+            {
+                json j({{"foo", "bar"}});
+                json::iterator const it = j.begin();
+                CHECK(std::string(it->type_name()) == "string");
+            }
+
+            SECTION("array")
+            {
+                json j({1, 2, 3, 4});
+                json::iterator const it = j.begin();
+                CHECK(std::string(it->type_name()) == "number");
+            }
+        }
+    }
+
+    SECTION("increment/decrement")
+    {
+        SECTION("post-increment")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator it = j.begin();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                it++;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("number")
+            {
+                json j(17);
+                json::iterator it = j.begin();
+                CHECK((it.m_it.primitive_iterator.m_it == 0));
+                it++;
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                it++;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("object")
+            {
+                json j({{"foo", "bar"}});
+                json::iterator it = j.begin();
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
+                it++;
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
+            }
+
+            SECTION("array")
+            {
+                json j({1, 2, 3, 4});
+                json::iterator it = j.begin();
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
+                it++;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it++;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it++;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it++;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
+            }
+        }
+
+        SECTION("pre-increment")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator it = j.begin();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                ++it;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("number")
+            {
+                json j(17);
+                json::iterator it = j.begin();
+                CHECK((it.m_it.primitive_iterator.m_it == 0));
+                ++it;
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                ++it;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("object")
+            {
+                json j({{"foo", "bar"}});
+                json::iterator it = j.begin();
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
+                ++it;
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
+            }
+
+            SECTION("array")
+            {
+                json j({1, 2, 3, 4});
+                json::iterator it = j.begin();
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
+                ++it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                ++it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                ++it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                ++it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
+            }
+        }
+
+        SECTION("post-decrement")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator const it = j.end();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+            }
+
+            SECTION("number")
+            {
+                json j(17);
+                json::iterator it = j.end();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                it--;
+                CHECK((it.m_it.primitive_iterator.m_it == 0));
+                it--;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("object")
+            {
+                json j({{"foo", "bar"}});
+                json::iterator it = j.end();
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
+                it--;
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
+            }
+
+            SECTION("array")
+            {
+                json j({1, 2, 3, 4});
+                json::iterator it = j.end();
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
+                it--;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it--;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it--;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                it--;
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+            }
+        }
+
+        SECTION("pre-decrement")
+        {
+            SECTION("null")
+            {
+                json j(json::value_t::null);
+                json::iterator const it = j.end();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+            }
+
+            SECTION("number")
+            {
+                json j(17);
+                json::iterator it = j.end();
+                CHECK((it.m_it.primitive_iterator.m_it == 1));
+                --it;
+                CHECK((it.m_it.primitive_iterator.m_it == 0));
+                --it;
+                CHECK((it.m_it.primitive_iterator.m_it != 0 && it.m_it.primitive_iterator.m_it != 1));
+            }
+
+            SECTION("object")
+            {
+                json j({{"foo", "bar"}});
+                json::iterator it = j.end();
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->end()));
+                --it;
+                CHECK((it.m_it.object_iterator == it.m_object->m_data.m_value.object->begin()));
+            }
+
+            SECTION("array")
+            {
+                json j({1, 2, 3, 4});
+                json::iterator it = j.end();
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->end()));
+                --it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                --it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                --it;
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+                --it;
+                CHECK((it.m_it.array_iterator == it.m_object->m_data.m_value.array->begin()));
+                CHECK((it.m_it.array_iterator != it.m_object->m_data.m_value.array->end()));
+            }
+        }
+    }
+    SECTION("equality-preserving")
+    {
+        SECTION("post-increment")
+        {
+            SECTION("primitive_iterator_t")
+            {
+                using Iter = nlohmann::detail::primitive_iterator_t;
+                CHECK(std::is_same < decltype(std::declval<Iter&>()++), Iter >::value);
+            }
+            SECTION("iter_impl")
+            {
+                using Iter = nlohmann::detail::iter_impl<json>;
+                CHECK(std::is_same < decltype(std::declval<Iter&>()++), Iter >::value);
+            }
+            SECTION("json_reverse_iterator")
+            {
+                using Base = nlohmann::detail::iter_impl<json>;
+                using Iter = nlohmann::detail::json_reverse_iterator<Base>;
+                CHECK(std::is_same < decltype(std::declval<Iter&>()++), Iter >::value);
+            }
+        }
+        SECTION("post-decrement")
+        {
+            SECTION("primitive_iterator_t")
+            {
+                using Iter = nlohmann::detail::primitive_iterator_t;
+                CHECK(std::is_same < decltype(std::declval<Iter&>()--), Iter >::value);
+            }
+            SECTION("iter_impl")
+            {
+                using Iter = nlohmann::detail::iter_impl<json>;
+                CHECK(std::is_same < decltype(std::declval<Iter&>()--), Iter >::value );
+            }
+            SECTION("json_reverse_iterator")
+            {
+                using Base = nlohmann::detail::iter_impl<json>;
+                using Iter = nlohmann::detail::json_reverse_iterator<Base>;
+                CHECK(std::is_same < decltype(std::declval<Iter&>()--), Iter >::value );
+            }
+        }
+    }
+    // prevent "accidental mutation of a temporary object"
+    SECTION("cert-dcl21-cpp")
+    {
+        using nlohmann::detail::is_detected;
+        SECTION("post-increment")
+        {
+            SECTION("primitive_iterator_t")
+            {
+                using Iter = nlohmann::detail::primitive_iterator_t;
+                CHECK_FALSE(is_detected<can_post_increment_temporary, Iter&>::value);
+            }
+            SECTION("iter_impl")
+            {
+                using Iter = nlohmann::detail::iter_impl<json>;
+                CHECK_FALSE(is_detected<can_post_increment_temporary, Iter&>::value);
+            }
+            SECTION("json_reverse_iterator")
+            {
+                using Base = nlohmann::detail::iter_impl<json>;
+                using Iter = nlohmann::detail::json_reverse_iterator<Base>;
+                CHECK_FALSE(is_detected<can_post_increment_temporary, Iter&>::value);
+            }
+        }
+        SECTION("post-decrement")
+        {
+            SECTION("primitive_iterator_t")
+            {
+                using Iter = nlohmann::detail::primitive_iterator_t;
+                CHECK_FALSE(is_detected<can_post_decrement_temporary, Iter&>::value);
+            }
+            SECTION("iter_impl")
+            {
+                using Iter = nlohmann::detail::iter_impl<json>;
+                CHECK_FALSE(is_detected<can_post_decrement_temporary, Iter&>::value);
+            }
+            SECTION("json_reverse_iterator")
+            {
+                using Base = nlohmann::detail::iter_impl<json>;
+                using Iter = nlohmann::detail::json_reverse_iterator<Base>;
+                CHECK_FALSE(is_detected<can_post_decrement_temporary, Iter&>::value);
+            }
+
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_lexer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_lexer.cpp
new file mode 100644
index 00000000..dba0cb2e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_lexer.cpp
@@ -0,0 +1,226 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+namespace
+{
+// shortcut to scan a string literal
+json::lexer::token_type scan_string(const char* s, bool ignore_comments = false);
+json::lexer::token_type scan_string(const char* s, const bool ignore_comments)
+{
+    auto ia = nlohmann::detail::input_adapter(s);
+    return nlohmann::detail::lexer<json, decltype(ia)>(std::move(ia), ignore_comments).scan(); // NOLINT(hicpp-move-const-arg,performance-move-const-arg)
+}
+} // namespace
+
+std::string get_error_message(const char* s, bool ignore_comments = false); // NOLINT(misc-use-internal-linkage)
+std::string get_error_message(const char* s, const bool ignore_comments)
+{
+    auto ia = nlohmann::detail::input_adapter(s);
+    auto lexer = nlohmann::detail::lexer<json, decltype(ia)>(std::move(ia), ignore_comments); // NOLINT(hicpp-move-const-arg,performance-move-const-arg)
+    lexer.scan();
+    return lexer.get_error_message();
+}
+
+TEST_CASE("lexer class")
+{
+    SECTION("scan")
+    {
+        SECTION("structural characters")
+        {
+            CHECK((scan_string("[") == json::lexer::token_type::begin_array));
+            CHECK((scan_string("]") == json::lexer::token_type::end_array));
+            CHECK((scan_string("{") == json::lexer::token_type::begin_object));
+            CHECK((scan_string("}") == json::lexer::token_type::end_object));
+            CHECK((scan_string(",") == json::lexer::token_type::value_separator));
+            CHECK((scan_string(":") == json::lexer::token_type::name_separator));
+        }
+
+        SECTION("literal names")
+        {
+            CHECK((scan_string("null") == json::lexer::token_type::literal_null));
+            CHECK((scan_string("true") == json::lexer::token_type::literal_true));
+            CHECK((scan_string("false") == json::lexer::token_type::literal_false));
+        }
+
+        SECTION("numbers")
+        {
+            CHECK((scan_string("0") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("1") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("2") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("3") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("4") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("5") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("6") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("7") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("8") == json::lexer::token_type::value_unsigned));
+            CHECK((scan_string("9") == json::lexer::token_type::value_unsigned));
+
+            CHECK((scan_string("-0") == json::lexer::token_type::value_integer));
+            CHECK((scan_string("-1") == json::lexer::token_type::value_integer));
+
+            CHECK((scan_string("1.1") == json::lexer::token_type::value_float));
+            CHECK((scan_string("-1.1") == json::lexer::token_type::value_float));
+            CHECK((scan_string("1E10") == json::lexer::token_type::value_float));
+        }
+
+        SECTION("whitespace")
+        {
+            // result is end_of_input, because not token is following
+            CHECK((scan_string(" ") == json::lexer::token_type::end_of_input));
+            CHECK((scan_string("\t") == json::lexer::token_type::end_of_input));
+            CHECK((scan_string("\n") == json::lexer::token_type::end_of_input));
+            CHECK((scan_string("\r") == json::lexer::token_type::end_of_input));
+            CHECK((scan_string(" \t\n\r\n\t ") == json::lexer::token_type::end_of_input));
+        }
+    }
+
+    SECTION("token_type_name")
+    {
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::uninitialized)) == "<uninitialized>"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::literal_true)) == "true literal"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::literal_false)) == "false literal"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::literal_null)) == "null literal"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::value_string)) == "string literal"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::value_unsigned)) == "number literal"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::value_integer)) == "number literal"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::value_float)) == "number literal"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::begin_array)) == "'['"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::begin_object)) == "'{'"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::end_array)) == "']'"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::end_object)) == "'}'"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::name_separator)) == "':'"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::value_separator)) == "','"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::parse_error)) == "<parse error>"));
+        CHECK((std::string(json::lexer::token_type_name(json::lexer::token_type::end_of_input)) == "end of input"));
+    }
+
+    SECTION("parse errors on first character")
+    {
+        for (int c = 1; c < 128; ++c)
+        {
+            // create string from the ASCII code
+            const auto s = std::string(1, static_cast<char>(c));
+            // store scan() result
+            const auto res = scan_string(s.c_str());
+
+            CAPTURE(s)
+
+            switch (c)
+            {
+                // single characters that are valid tokens
+                case ('['):
+                case (']'):
+                case ('{'):
+                case ('}'):
+                case (','):
+                case (':'):
+                case ('0'):
+                case ('1'):
+                case ('2'):
+                case ('3'):
+                case ('4'):
+                case ('5'):
+                case ('6'):
+                case ('7'):
+                case ('8'):
+                case ('9'):
+                {
+                    CHECK((res != json::lexer::token_type::parse_error));
+                    break;
+                }
+
+                // whitespace
+                case (' '):
+                case ('\t'):
+                case ('\n'):
+                case ('\r'):
+                {
+                    CHECK((res == json::lexer::token_type::end_of_input));
+                    break;
+                }
+
+                // anything else is not expected
+                default:
+                {
+                    CHECK((res == json::lexer::token_type::parse_error));
+                    break;
+                }
+            }
+        }
+    }
+
+    SECTION("very large string")
+    {
+        // strings larger than 1024 bytes yield a resize of the lexer's yytext buffer
+        std::string s("\"");
+        s += std::string(2048, 'x');
+        s += "\"";
+        CHECK((scan_string(s.c_str()) == json::lexer::token_type::value_string));
+    }
+
+    SECTION("fail on comments")
+    {
+        CHECK((scan_string("/", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/", false) == "invalid literal");
+
+        CHECK((scan_string("/!", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/!", false) == "invalid literal");
+        CHECK((scan_string("/*", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/*", false) == "invalid literal");
+        CHECK((scan_string("/**", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/**", false) == "invalid literal");
+
+        CHECK((scan_string("//", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("//", false) == "invalid literal");
+        CHECK((scan_string("/**/", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/**/", false) == "invalid literal");
+        CHECK((scan_string("/** /", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/** /", false) == "invalid literal");
+
+        CHECK((scan_string("/***/", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/***/", false) == "invalid literal");
+        CHECK((scan_string("/* true */", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/* true */", false) == "invalid literal");
+        CHECK((scan_string("/*/**/", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/*/**/", false) == "invalid literal");
+        CHECK((scan_string("/*/* */", false) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/*/* */", false) == "invalid literal");
+    }
+
+    SECTION("ignore comments")
+    {
+        CHECK((scan_string("/", true) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/", true) == "invalid comment; expecting '/' or '*' after '/'");
+
+        CHECK((scan_string("/!", true) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/!", true) == "invalid comment; expecting '/' or '*' after '/'");
+        CHECK((scan_string("/*", true) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/*", true) == "invalid comment; missing closing '*/'");
+        CHECK((scan_string("/**", true) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/**", true) == "invalid comment; missing closing '*/'");
+
+        CHECK((scan_string("//", true) == json::lexer::token_type::end_of_input));
+        CHECK((scan_string("/**/", true) == json::lexer::token_type::end_of_input));
+        CHECK((scan_string("/** /", true) == json::lexer::token_type::parse_error));
+        CHECK(get_error_message("/** /", true) == "invalid comment; missing closing '*/'");
+
+        CHECK((scan_string("/***/", true) == json::lexer::token_type::end_of_input));
+        CHECK((scan_string("/* true */", true) == json::lexer::token_type::end_of_input));
+        CHECK((scan_string("/*/**/", true) == json::lexer::token_type::end_of_input));
+        CHECK((scan_string("/*/* */", true) == json::lexer::token_type::end_of_input));
+
+        CHECK((scan_string("//\n//\n", true) == json::lexer::token_type::end_of_input));
+        CHECK((scan_string("/**//**//**/", true) == json::lexer::token_type::end_of_input));
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_parser.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_parser.cpp
new file mode 100644
index 00000000..36de35e5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_parser.cpp
@@ -0,0 +1,1691 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <valarray>
+
+namespace
+{
+class SaxEventLogger
+{
+  public:
+    bool null()
+    {
+        events.emplace_back("null()");
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        events.emplace_back(val ? "boolean(true)" : "boolean(false)");
+        return true;
+    }
+
+    bool number_integer(json::number_integer_t val)
+    {
+        events.push_back("number_integer(" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_unsigned(json::number_unsigned_t val)
+    {
+        events.push_back("number_unsigned(" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_float(json::number_float_t /*unused*/, const std::string& s)
+    {
+        events.push_back("number_float(" + s + ")");
+        return true;
+    }
+
+    bool string(std::string& val)
+    {
+        events.push_back("string(" + val + ")");
+        return true;
+    }
+
+    bool binary(json::binary_t& val)
+    {
+        std::string binary_contents = "binary(";
+        std::string comma_space;
+        for (auto b : val)
+        {
+            binary_contents.append(comma_space);
+            binary_contents.append(std::to_string(static_cast<int>(b)));
+            comma_space = ", ";
+        }
+        binary_contents.append(")");
+        events.push_back(binary_contents);
+        return true;
+    }
+
+    bool start_object(std::size_t elements)
+    {
+        if (elements == static_cast<std::size_t>(-1))
+        {
+            events.emplace_back("start_object()");
+        }
+        else
+        {
+            events.push_back("start_object(" + std::to_string(elements) + ")");
+        }
+        return true;
+    }
+
+    bool key(std::string& val)
+    {
+        events.push_back("key(" + val + ")");
+        return true;
+    }
+
+    bool end_object()
+    {
+        events.emplace_back("end_object()");
+        return true;
+    }
+
+    bool start_array(std::size_t elements)
+    {
+        if (elements == static_cast<std::size_t>(-1))
+        {
+            events.emplace_back("start_array()");
+        }
+        else
+        {
+            events.push_back("start_array(" + std::to_string(elements) + ")");
+        }
+        return true;
+    }
+
+    bool end_array()
+    {
+        events.emplace_back("end_array()");
+        return true;
+    }
+
+    bool parse_error(std::size_t position, const std::string& /*unused*/, const json::exception& /*unused*/)
+    {
+        errored = true;
+        events.push_back("parse_error(" + std::to_string(position) + ")");
+        return false;
+    }
+
+    std::vector<std::string> events {}; // NOLINT(readability-redundant-member-init)
+    bool errored = false;
+};
+
+class SaxCountdown : public nlohmann::json::json_sax_t
+{
+  public:
+    explicit SaxCountdown(const int count) : events_left(count)
+    {}
+
+    bool null() override
+    {
+        return events_left-- > 0;
+    }
+
+    bool boolean(bool /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_integer(json::number_integer_t /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_unsigned(json::number_unsigned_t /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_float(json::number_float_t /*val*/, const std::string& /*s*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool string(std::string& /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool binary(json::binary_t& /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_object(std::size_t /*elements*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool key(std::string& /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_object() override
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_array(std::size_t /*elements*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_array() override
+    {
+        return events_left-- > 0;
+    }
+
+    bool parse_error(std::size_t /*position*/, const std::string& /*last_token*/, const json::exception& /*ex*/) override
+    {
+        return false;
+    }
+
+  private:
+    int events_left = 0;
+};
+
+json parser_helper(const std::string& s);
+bool accept_helper(const std::string& s);
+void comments_helper(const std::string& s);
+
+json parser_helper(const std::string& s)
+{
+    json j;
+    json::parser(nlohmann::detail::input_adapter(s)).parse(true, j);
+
+    // if this line was reached, no exception occurred
+    // -> check if result is the same without exceptions
+    json j_nothrow;
+    CHECK_NOTHROW(json::parser(nlohmann::detail::input_adapter(s), nullptr, false).parse(true, j_nothrow));
+    CHECK(j_nothrow == j);
+
+    json j_sax;
+    nlohmann::detail::json_sax_dom_parser<json, nlohmann::detail::string_input_adapter_type> sdp(j_sax);
+    json::sax_parse(s, &sdp);
+    CHECK(j_sax == j);
+
+    comments_helper(s);
+
+    return j;
+}
+
+bool accept_helper(const std::string& s)
+{
+    CAPTURE(s)
+
+    // 1. parse s without exceptions
+    json j;
+    CHECK_NOTHROW(json::parser(nlohmann::detail::input_adapter(s), nullptr, false).parse(true, j));
+    const bool ok_noexcept = !j.is_discarded();
+
+    // 2. accept s
+    const bool ok_accept = json::parser(nlohmann::detail::input_adapter(s)).accept(true);
+
+    // 3. check if both approaches come to the same result
+    CHECK(ok_noexcept == ok_accept);
+
+    // 4. parse with SAX (compare with relaxed accept result)
+    SaxEventLogger el;
+    CHECK_NOTHROW(json::sax_parse(s, &el, json::input_format_t::json, false));
+    CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept(false) == !el.errored);
+
+    // 5. parse with simple callback
+    json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t /*unused*/, json& /*unused*/) noexcept
+    {
+        return true;
+    };
+    json const j_cb = json::parse(s, cb, false);
+    const bool ok_noexcept_cb = !j_cb.is_discarded();
+
+    // 6. check if this approach came to the same result
+    CHECK(ok_noexcept == ok_noexcept_cb);
+
+    // 7. check if comments are properly ignored
+    if (ok_accept)
+    {
+        comments_helper(s);
+    }
+
+    // 8. return result
+    return ok_accept;
+}
+
+void comments_helper(const std::string& s)
+{
+    json _;
+
+    // parse/accept with default parser
+    CHECK_NOTHROW(_ = json::parse(s));
+    CHECK(json::accept(s));
+
+    // parse/accept while skipping comments
+    CHECK_NOTHROW(_ = json::parse(s, nullptr, false, true));
+    CHECK(json::accept(s, true));
+
+    std::vector<std::string> json_with_comments;
+
+    // start with a comment
+    json_with_comments.push_back(std::string("// this is a comment\n") + s);
+    json_with_comments.push_back(std::string("/* this is a comment */") + s);
+    // end with a comment
+    json_with_comments.push_back(s + "// this is a comment");
+    json_with_comments.push_back(s + "/* this is a comment */");
+
+    // check all strings
+    for (const auto& json_with_comment : json_with_comments)
+    {
+        CAPTURE(json_with_comment)
+        CHECK_THROWS_AS(_ = json::parse(json_with_comment), json::parse_error);
+        CHECK(!json::accept(json_with_comment));
+
+        CHECK_NOTHROW(_ = json::parse(json_with_comment, nullptr, true, true));
+        CHECK(json::accept(json_with_comment, true));
+    }
+}
+
+} // namespace
+
+TEST_CASE("parser class")
+{
+    SECTION("parse")
+    {
+        SECTION("null")
+        {
+            CHECK(parser_helper("null") == json(nullptr));
+        }
+
+        SECTION("true")
+        {
+            CHECK(parser_helper("true") == json(true));
+        }
+
+        SECTION("false")
+        {
+            CHECK(parser_helper("false") == json(false));
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty array")
+            {
+                CHECK(parser_helper("[]") == json(json::value_t::array));
+                CHECK(parser_helper("[ ]") == json(json::value_t::array));
+            }
+
+            SECTION("nonempty array")
+            {
+                CHECK(parser_helper("[true, false, null]") == json({true, false, nullptr}));
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty object")
+            {
+                CHECK(parser_helper("{}") == json(json::value_t::object));
+                CHECK(parser_helper("{ }") == json(json::value_t::object));
+            }
+
+            SECTION("nonempty object")
+            {
+                CHECK(parser_helper("{\"\": true, \"one\": 1, \"two\": null}") == json({{"", true}, {"one", 1}, {"two", nullptr}}));
+            }
+        }
+
+        SECTION("string")
+        {
+            // empty string
+            CHECK(parser_helper("\"\"") == json(json::value_t::string));
+
+            SECTION("errors")
+            {
+                // error: tab in string
+                CHECK_THROWS_WITH_AS(parser_helper("\"\t\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t; last read: '\"<U+0009>'", json::parse_error&);
+                // error: newline in string
+                CHECK_THROWS_WITH_AS(parser_helper("\"\n\""), "[json.exception.parse_error.101] parse error at line 2, column 0: syntax error while parsing value - invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n; last read: '\"<U+000A>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\r\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r; last read: '\"<U+000D>'", json::parse_error&);
+                // error: backspace in string
+                CHECK_THROWS_WITH_AS(parser_helper("\"\b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b; last read: '\"<U+0008>'", json::parse_error&);
+                // improve code coverage
+                CHECK_THROWS_AS(parser_helper("\uFF01"), json::parse_error&);
+                CHECK_THROWS_AS(parser_helper("[-4:1,]"), json::parse_error&);
+                // unescaped control characters
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x00\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: missing closing quote; last read: '\"'", json::parse_error&); // NOLINT(bugprone-string-literal-with-embedded-nul)
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x01\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0001 (SOH) must be escaped to \\u0001; last read: '\"<U+0001>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x02\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0002 (STX) must be escaped to \\u0002; last read: '\"<U+0002>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x03\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0003 (ETX) must be escaped to \\u0003; last read: '\"<U+0003>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x04\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0004 (EOT) must be escaped to \\u0004; last read: '\"<U+0004>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x05\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0005 (ENQ) must be escaped to \\u0005; last read: '\"<U+0005>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x06\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0006 (ACK) must be escaped to \\u0006; last read: '\"<U+0006>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x07\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0007 (BEL) must be escaped to \\u0007; last read: '\"<U+0007>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x08\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b; last read: '\"<U+0008>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x09\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t; last read: '\"<U+0009>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0a\""), "[json.exception.parse_error.101] parse error at line 2, column 0: syntax error while parsing value - invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n; last read: '\"<U+000A>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000B (VT) must be escaped to \\u000B; last read: '\"<U+000B>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0c\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f; last read: '\"<U+000C>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0d\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r; last read: '\"<U+000D>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0e\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000E (SO) must be escaped to \\u000E; last read: '\"<U+000E>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0f\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000F (SI) must be escaped to \\u000F; last read: '\"<U+000F>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x10\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0010 (DLE) must be escaped to \\u0010; last read: '\"<U+0010>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x11\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0011 (DC1) must be escaped to \\u0011; last read: '\"<U+0011>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x12\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0012 (DC2) must be escaped to \\u0012; last read: '\"<U+0012>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x13\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0013 (DC3) must be escaped to \\u0013; last read: '\"<U+0013>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x14\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0014 (DC4) must be escaped to \\u0014; last read: '\"<U+0014>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x15\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0015 (NAK) must be escaped to \\u0015; last read: '\"<U+0015>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x16\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0016 (SYN) must be escaped to \\u0016; last read: '\"<U+0016>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x17\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0017 (ETB) must be escaped to \\u0017; last read: '\"<U+0017>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x18\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0018 (CAN) must be escaped to \\u0018; last read: '\"<U+0018>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x19\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0019 (EM) must be escaped to \\u0019; last read: '\"<U+0019>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1a\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001A (SUB) must be escaped to \\u001A; last read: '\"<U+001A>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001B (ESC) must be escaped to \\u001B; last read: '\"<U+001B>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1c\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001C (FS) must be escaped to \\u001C; last read: '\"<U+001C>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1d\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001D (GS) must be escaped to \\u001D; last read: '\"<U+001D>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1e\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001E (RS) must be escaped to \\u001E; last read: '\"<U+001E>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1f\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001F (US) must be escaped to \\u001F; last read: '\"<U+001F>'", json::parse_error&);
+
+                SECTION("additional test for null byte")
+                {
+                    // The test above for the null byte is wrong, because passing
+                    // a string to the parser only reads int until it encounters
+                    // a null byte. This test inserts the null byte later on and
+                    // uses an iterator range.
+                    std::string s = "\"1\"";
+                    s[1] = '\0';
+                    json _;
+                    CHECK_THROWS_WITH_AS(_ = json::parse(s.begin(), s.end()), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0000 (NUL) must be escaped to \\u0000; last read: '\"<U+0000>'", json::parse_error&);
+                }
+            }
+
+            SECTION("escaped")
+            {
+                // quotation mark "\""
+                auto r1 = R"("\"")"_json;
+                CHECK(parser_helper("\"\\\"\"") == r1);
+                // reverse solidus "\\"
+                auto r2 = R"("\\")"_json;
+                CHECK(parser_helper("\"\\\\\"") == r2);
+                // solidus
+                CHECK(parser_helper("\"\\/\"") == R"("/")"_json);
+                // backspace
+                CHECK(parser_helper("\"\\b\"") == json("\b"));
+                // formfeed
+                CHECK(parser_helper("\"\\f\"") == json("\f"));
+                // newline
+                CHECK(parser_helper("\"\\n\"") == json("\n"));
+                // carriage return
+                CHECK(parser_helper("\"\\r\"") == json("\r"));
+                // horizontal tab
+                CHECK(parser_helper("\"\\t\"") == json("\t"));
+
+                CHECK(parser_helper("\"\\u0001\"").get<json::string_t>() == "\x01");
+                CHECK(parser_helper("\"\\u000a\"").get<json::string_t>() == "\n");
+                CHECK(parser_helper("\"\\u00b0\"").get<json::string_t>() == "°");
+                CHECK(parser_helper("\"\\u0c00\"").get<json::string_t>() == "ఀ");
+                CHECK(parser_helper("\"\\ud000\"").get<json::string_t>() == "퀀");
+                CHECK(parser_helper("\"\\u000E\"").get<json::string_t>() == "\x0E");
+                CHECK(parser_helper("\"\\u00F0\"").get<json::string_t>() == "ð");
+                CHECK(parser_helper("\"\\u0100\"").get<json::string_t>() == "Ā");
+                CHECK(parser_helper("\"\\u2000\"").get<json::string_t>() == " ");
+                CHECK(parser_helper("\"\\uFFFF\"").get<json::string_t>() == "￿");
+                CHECK(parser_helper("\"\\u20AC\"").get<json::string_t>() == "€");
+                CHECK(parser_helper("\"€\"").get<json::string_t>() == "€");
+                CHECK(parser_helper("\"🎈\"").get<json::string_t>() == "🎈");
+
+                CHECK(parser_helper("\"\\ud80c\\udc60\"").get<json::string_t>() == "\xf0\x93\x81\xa0");
+                CHECK(parser_helper("\"\\ud83c\\udf1e\"").get<json::string_t>() == "🌞");
+            }
+        }
+
+        SECTION("number")
+        {
+            SECTION("integers")
+            {
+                SECTION("without exponent")
+                {
+                    CHECK(parser_helper("-128") == json(-128));
+                    CHECK(parser_helper("-0") == json(-0));
+                    CHECK(parser_helper("0") == json(0));
+                    CHECK(parser_helper("128") == json(128));
+                }
+
+                SECTION("with exponent")
+                {
+                    CHECK(parser_helper("0e1") == json(0e1));
+                    CHECK(parser_helper("0E1") == json(0e1));
+
+                    CHECK(parser_helper("10000E-4") == json(10000e-4));
+                    CHECK(parser_helper("10000E-3") == json(10000e-3));
+                    CHECK(parser_helper("10000E-2") == json(10000e-2));
+                    CHECK(parser_helper("10000E-1") == json(10000e-1));
+                    CHECK(parser_helper("10000E0") == json(10000e0));
+                    CHECK(parser_helper("10000E1") == json(10000e1));
+                    CHECK(parser_helper("10000E2") == json(10000e2));
+                    CHECK(parser_helper("10000E3") == json(10000e3));
+                    CHECK(parser_helper("10000E4") == json(10000e4));
+
+                    CHECK(parser_helper("10000e-4") == json(10000e-4));
+                    CHECK(parser_helper("10000e-3") == json(10000e-3));
+                    CHECK(parser_helper("10000e-2") == json(10000e-2));
+                    CHECK(parser_helper("10000e-1") == json(10000e-1));
+                    CHECK(parser_helper("10000e0") == json(10000e0));
+                    CHECK(parser_helper("10000e1") == json(10000e1));
+                    CHECK(parser_helper("10000e2") == json(10000e2));
+                    CHECK(parser_helper("10000e3") == json(10000e3));
+                    CHECK(parser_helper("10000e4") == json(10000e4));
+
+                    CHECK(parser_helper("-0e1") == json(-0e1));
+                    CHECK(parser_helper("-0E1") == json(-0e1));
+                    CHECK(parser_helper("-0E123") == json(-0e123));
+
+                    // numbers after exponent
+                    CHECK(parser_helper("10E0") == json(10e0));
+                    CHECK(parser_helper("10E1") == json(10e1));
+                    CHECK(parser_helper("10E2") == json(10e2));
+                    CHECK(parser_helper("10E3") == json(10e3));
+                    CHECK(parser_helper("10E4") == json(10e4));
+                    CHECK(parser_helper("10E5") == json(10e5));
+                    CHECK(parser_helper("10E6") == json(10e6));
+                    CHECK(parser_helper("10E7") == json(10e7));
+                    CHECK(parser_helper("10E8") == json(10e8));
+                    CHECK(parser_helper("10E9") == json(10e9));
+                    CHECK(parser_helper("10E+0") == json(10e0));
+                    CHECK(parser_helper("10E+1") == json(10e1));
+                    CHECK(parser_helper("10E+2") == json(10e2));
+                    CHECK(parser_helper("10E+3") == json(10e3));
+                    CHECK(parser_helper("10E+4") == json(10e4));
+                    CHECK(parser_helper("10E+5") == json(10e5));
+                    CHECK(parser_helper("10E+6") == json(10e6));
+                    CHECK(parser_helper("10E+7") == json(10e7));
+                    CHECK(parser_helper("10E+8") == json(10e8));
+                    CHECK(parser_helper("10E+9") == json(10e9));
+                    CHECK(parser_helper("10E-1") == json(10e-1));
+                    CHECK(parser_helper("10E-2") == json(10e-2));
+                    CHECK(parser_helper("10E-3") == json(10e-3));
+                    CHECK(parser_helper("10E-4") == json(10e-4));
+                    CHECK(parser_helper("10E-5") == json(10e-5));
+                    CHECK(parser_helper("10E-6") == json(10e-6));
+                    CHECK(parser_helper("10E-7") == json(10e-7));
+                    CHECK(parser_helper("10E-8") == json(10e-8));
+                    CHECK(parser_helper("10E-9") == json(10e-9));
+                }
+
+                SECTION("edge cases")
+                {
+                    // From RFC8259, Section 6:
+                    // Note that when such software is used, numbers that are
+                    // integers and are in the range [-(2**53)+1, (2**53)-1]
+                    // are interoperable in the sense that implementations will
+                    // agree exactly on their numeric values.
+
+                    // -(2**53)+1
+                    CHECK(parser_helper("-9007199254740991").get<int64_t>() == -9007199254740991);
+                    // (2**53)-1
+                    CHECK(parser_helper("9007199254740991").get<int64_t>() == 9007199254740991);
+                }
+
+                SECTION("over the edge cases")  // issue #178 - Integer conversion to unsigned (incorrect handling of 64-bit integers)
+                {
+                    // While RFC8259, Section 6 specifies a preference for support
+                    // for ranges in range of IEEE 754-2008 binary64 (double precision)
+                    // this does not accommodate 64-bit integers without loss of accuracy.
+                    // As 64-bit integers are now widely used in software, it is desirable
+                    // to expand support to the full 64 bit (signed and unsigned) range
+                    // i.e. -(2**63) -> (2**64)-1.
+
+                    // -(2**63)    ** Note: compilers see negative literals as negated positive numbers (hence the -1))
+                    CHECK(parser_helper("-9223372036854775808").get<int64_t>() == -9223372036854775807 - 1);
+                    // (2**63)-1
+                    CHECK(parser_helper("9223372036854775807").get<int64_t>() == 9223372036854775807);
+                    // (2**64)-1
+                    CHECK(parser_helper("18446744073709551615").get<uint64_t>() == 18446744073709551615u);
+                }
+            }
+
+            SECTION("floating-point")
+            {
+                SECTION("without exponent")
+                {
+                    CHECK(parser_helper("-128.5") == json(-128.5));
+                    CHECK(parser_helper("0.999") == json(0.999));
+                    CHECK(parser_helper("128.5") == json(128.5));
+                    CHECK(parser_helper("-0.0") == json(-0.0));
+                }
+
+                SECTION("with exponent")
+                {
+                    CHECK(parser_helper("-128.5E3") == json(-128.5E3));
+                    CHECK(parser_helper("-128.5E-3") == json(-128.5E-3));
+                    CHECK(parser_helper("-0.0e1") == json(-0.0e1));
+                    CHECK(parser_helper("-0.0E1") == json(-0.0e1));
+                }
+            }
+
+            SECTION("overflow")
+            {
+                // overflows during parsing yield an exception
+                CHECK_THROWS_WITH_AS(parser_helper("1.18973e+4932").empty(), "[json.exception.out_of_range.406] number overflow parsing '1.18973e+4932'", json::out_of_range&);
+            }
+
+            SECTION("invalid numbers")
+            {
+                // numbers must not begin with "+"
+                CHECK_THROWS_AS(parser_helper("+1"), json::parse_error&);
+                CHECK_THROWS_AS(parser_helper("+0"), json::parse_error&);
+
+                CHECK_THROWS_WITH_AS(parser_helper("01"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - unexpected number literal; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-01"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - unexpected number literal; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("--1"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '--'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("1."),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '1.'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("1E"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("1E-"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '1E-'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("1.E1"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '1.E'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-1E"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '-1E'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0E#"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '-0E#'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0E-#"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '-0E-#'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0#"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: '-0#'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0.0:"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - unexpected ':'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0.0Z"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: '-0.0Z'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0E123:"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - unexpected ':'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0e0-:"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-:'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0e-:"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '-0e-:'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0f"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: '-0f'; expected end of input", json::parse_error&);
+            }
+        }
+    }
+
+    SECTION("accept")
+    {
+        SECTION("null")
+        {
+            CHECK(accept_helper("null"));
+        }
+
+        SECTION("true")
+        {
+            CHECK(accept_helper("true"));
+        }
+
+        SECTION("false")
+        {
+            CHECK(accept_helper("false"));
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty array")
+            {
+                CHECK(accept_helper("[]"));
+                CHECK(accept_helper("[ ]"));
+            }
+
+            SECTION("nonempty array")
+            {
+                CHECK(accept_helper("[true, false, null]"));
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty object")
+            {
+                CHECK(accept_helper("{}"));
+                CHECK(accept_helper("{ }"));
+            }
+
+            SECTION("nonempty object")
+            {
+                CHECK(accept_helper("{\"\": true, \"one\": 1, \"two\": null}"));
+            }
+        }
+
+        SECTION("string")
+        {
+            // empty string
+            CHECK(accept_helper("\"\""));
+
+            SECTION("errors")
+            {
+                // error: tab in string
+                CHECK(accept_helper("\"\t\"") == false);
+                // error: newline in string
+                CHECK(accept_helper("\"\n\"") == false);
+                CHECK(accept_helper("\"\r\"") == false);
+                // error: backspace in string
+                CHECK(accept_helper("\"\b\"") == false);
+                // improve code coverage
+                CHECK(accept_helper("\uFF01") == false);
+                CHECK(accept_helper("[-4:1,]") == false);
+                // unescaped control characters
+                CHECK(accept_helper("\"\x00\"") == false); // NOLINT(bugprone-string-literal-with-embedded-nul)
+                CHECK(accept_helper("\"\x01\"") == false);
+                CHECK(accept_helper("\"\x02\"") == false);
+                CHECK(accept_helper("\"\x03\"") == false);
+                CHECK(accept_helper("\"\x04\"") == false);
+                CHECK(accept_helper("\"\x05\"") == false);
+                CHECK(accept_helper("\"\x06\"") == false);
+                CHECK(accept_helper("\"\x07\"") == false);
+                CHECK(accept_helper("\"\x08\"") == false);
+                CHECK(accept_helper("\"\x09\"") == false);
+                CHECK(accept_helper("\"\x0a\"") == false);
+                CHECK(accept_helper("\"\x0b\"") == false);
+                CHECK(accept_helper("\"\x0c\"") == false);
+                CHECK(accept_helper("\"\x0d\"") == false);
+                CHECK(accept_helper("\"\x0e\"") == false);
+                CHECK(accept_helper("\"\x0f\"") == false);
+                CHECK(accept_helper("\"\x10\"") == false);
+                CHECK(accept_helper("\"\x11\"") == false);
+                CHECK(accept_helper("\"\x12\"") == false);
+                CHECK(accept_helper("\"\x13\"") == false);
+                CHECK(accept_helper("\"\x14\"") == false);
+                CHECK(accept_helper("\"\x15\"") == false);
+                CHECK(accept_helper("\"\x16\"") == false);
+                CHECK(accept_helper("\"\x17\"") == false);
+                CHECK(accept_helper("\"\x18\"") == false);
+                CHECK(accept_helper("\"\x19\"") == false);
+                CHECK(accept_helper("\"\x1a\"") == false);
+                CHECK(accept_helper("\"\x1b\"") == false);
+                CHECK(accept_helper("\"\x1c\"") == false);
+                CHECK(accept_helper("\"\x1d\"") == false);
+                CHECK(accept_helper("\"\x1e\"") == false);
+                CHECK(accept_helper("\"\x1f\"") == false);
+            }
+
+            SECTION("escaped")
+            {
+                // quotation mark "\""
+                auto r1 = R"("\"")"_json;
+                CHECK(accept_helper("\"\\\"\""));
+                // reverse solidus "\\"
+                auto r2 = R"("\\")"_json;
+                CHECK(accept_helper("\"\\\\\""));
+                // solidus
+                CHECK(accept_helper("\"\\/\""));
+                // backspace
+                CHECK(accept_helper("\"\\b\""));
+                // formfeed
+                CHECK(accept_helper("\"\\f\""));
+                // newline
+                CHECK(accept_helper("\"\\n\""));
+                // carriage return
+                CHECK(accept_helper("\"\\r\""));
+                // horizontal tab
+                CHECK(accept_helper("\"\\t\""));
+
+                CHECK(accept_helper("\"\\u0001\""));
+                CHECK(accept_helper("\"\\u000a\""));
+                CHECK(accept_helper("\"\\u00b0\""));
+                CHECK(accept_helper("\"\\u0c00\""));
+                CHECK(accept_helper("\"\\ud000\""));
+                CHECK(accept_helper("\"\\u000E\""));
+                CHECK(accept_helper("\"\\u00F0\""));
+                CHECK(accept_helper("\"\\u0100\""));
+                CHECK(accept_helper("\"\\u2000\""));
+                CHECK(accept_helper("\"\\uFFFF\""));
+                CHECK(accept_helper("\"\\u20AC\""));
+                CHECK(accept_helper("\"€\""));
+                CHECK(accept_helper("\"🎈\""));
+
+                CHECK(accept_helper("\"\\ud80c\\udc60\""));
+                CHECK(accept_helper("\"\\ud83c\\udf1e\""));
+            }
+        }
+
+        SECTION("number")
+        {
+            SECTION("integers")
+            {
+                SECTION("without exponent")
+                {
+                    CHECK(accept_helper("-128"));
+                    CHECK(accept_helper("-0"));
+                    CHECK(accept_helper("0"));
+                    CHECK(accept_helper("128"));
+                }
+
+                SECTION("with exponent")
+                {
+                    CHECK(accept_helper("0e1"));
+                    CHECK(accept_helper("0E1"));
+
+                    CHECK(accept_helper("10000E-4"));
+                    CHECK(accept_helper("10000E-3"));
+                    CHECK(accept_helper("10000E-2"));
+                    CHECK(accept_helper("10000E-1"));
+                    CHECK(accept_helper("10000E0"));
+                    CHECK(accept_helper("10000E1"));
+                    CHECK(accept_helper("10000E2"));
+                    CHECK(accept_helper("10000E3"));
+                    CHECK(accept_helper("10000E4"));
+
+                    CHECK(accept_helper("10000e-4"));
+                    CHECK(accept_helper("10000e-3"));
+                    CHECK(accept_helper("10000e-2"));
+                    CHECK(accept_helper("10000e-1"));
+                    CHECK(accept_helper("10000e0"));
+                    CHECK(accept_helper("10000e1"));
+                    CHECK(accept_helper("10000e2"));
+                    CHECK(accept_helper("10000e3"));
+                    CHECK(accept_helper("10000e4"));
+
+                    CHECK(accept_helper("-0e1"));
+                    CHECK(accept_helper("-0E1"));
+                    CHECK(accept_helper("-0E123"));
+                }
+
+                SECTION("edge cases")
+                {
+                    // From RFC8259, Section 6:
+                    // Note that when such software is used, numbers that are
+                    // integers and are in the range [-(2**53)+1, (2**53)-1]
+                    // are interoperable in the sense that implementations will
+                    // agree exactly on their numeric values.
+
+                    // -(2**53)+1
+                    CHECK(accept_helper("-9007199254740991"));
+                    // (2**53)-1
+                    CHECK(accept_helper("9007199254740991"));
+                }
+
+                SECTION("over the edge cases")  // issue #178 - Integer conversion to unsigned (incorrect handling of 64-bit integers)
+                {
+                    // While RFC8259, Section 6 specifies a preference for support
+                    // for ranges in range of IEEE 754-2008 binary64 (double precision)
+                    // this does not accommodate 64 bit integers without loss of accuracy.
+                    // As 64 bit integers are now widely used in software, it is desirable
+                    // to expand support to the full 64 bit (signed and unsigned) range
+                    // i.e. -(2**63) -> (2**64)-1.
+
+                    // -(2**63)    ** Note: compilers see negative literals as negated positive numbers (hence the -1))
+                    CHECK(accept_helper("-9223372036854775808"));
+                    // (2**63)-1
+                    CHECK(accept_helper("9223372036854775807"));
+                    // (2**64)-1
+                    CHECK(accept_helper("18446744073709551615"));
+                }
+            }
+
+            SECTION("floating-point")
+            {
+                SECTION("without exponent")
+                {
+                    CHECK(accept_helper("-128.5"));
+                    CHECK(accept_helper("0.999"));
+                    CHECK(accept_helper("128.5"));
+                    CHECK(accept_helper("-0.0"));
+                }
+
+                SECTION("with exponent")
+                {
+                    CHECK(accept_helper("-128.5E3"));
+                    CHECK(accept_helper("-128.5E-3"));
+                    CHECK(accept_helper("-0.0e1"));
+                    CHECK(accept_helper("-0.0E1"));
+                }
+            }
+
+            SECTION("overflow")
+            {
+                // overflows during parsing
+                CHECK(!accept_helper("1.18973e+4932"));
+            }
+
+            SECTION("invalid numbers")
+            {
+                CHECK(accept_helper("01") == false);
+                CHECK(accept_helper("--1") == false);
+                CHECK(accept_helper("1.") == false);
+                CHECK(accept_helper("1E") == false);
+                CHECK(accept_helper("1E-") == false);
+                CHECK(accept_helper("1.E1") == false);
+                CHECK(accept_helper("-1E") == false);
+                CHECK(accept_helper("-0E#") == false);
+                CHECK(accept_helper("-0E-#") == false);
+                CHECK(accept_helper("-0#") == false);
+                CHECK(accept_helper("-0.0:") == false);
+                CHECK(accept_helper("-0.0Z") == false);
+                CHECK(accept_helper("-0E123:") == false);
+                CHECK(accept_helper("-0e0-:") == false);
+                CHECK(accept_helper("-0e-:") == false);
+                CHECK(accept_helper("-0f") == false);
+
+                // numbers must not begin with "+"
+                CHECK(accept_helper("+1") == false);
+                CHECK(accept_helper("+0") == false);
+            }
+        }
+    }
+
+    SECTION("parse errors")
+    {
+        // unexpected end of number
+        CHECK_THROWS_WITH_AS(parser_helper("0."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '0.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("-"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("--"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '--'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("-0."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected digit after '.'; last read: '-0.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("-."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("-:"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-:'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("0.:"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '0.:'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("e."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - invalid literal; last read: 'e'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1e."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1e/"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e/'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1e:"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e:'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1E."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1E/"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E/'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1E:"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E:'", json::parse_error&);
+
+        // unexpected end of null
+        CHECK_THROWS_WITH_AS(parser_helper("n"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 'n'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("nu"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'nu'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("nul"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nul'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("nulk"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nulk'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("nulm"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nulm'", json::parse_error&);
+
+        // unexpected end of true
+        CHECK_THROWS_WITH_AS(parser_helper("t"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 't'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("tr"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'tr'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("tru"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'tru'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("trud"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'trud'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("truf"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'truf'", json::parse_error&);
+
+        // unexpected end of false
+        CHECK_THROWS_WITH_AS(parser_helper("f"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 'f'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("fa"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'fa'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("fal"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'fal'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("fals"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'fals'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("falsd"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'falsd'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("falsf"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'falsf'", json::parse_error&);
+
+        // missing/unexpected end of array
+        CHECK_THROWS_WITH_AS(parser_helper("["),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("[1"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("[1,"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("[1,]"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("]"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal", json::parse_error&);
+
+        // missing/unexpected end of object
+        CHECK_THROWS_WITH_AS(parser_helper("{"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing object key - unexpected end of input; expected string literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("{\"foo\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing object separator - unexpected end of input; expected ':'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":}"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected '}'; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":1,}"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 10: syntax error while parsing object key - unexpected '}'; expected string literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("}"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - unexpected '}'; expected '[', '{', or a literal", json::parse_error&);
+
+        // missing/unexpected end of string
+        CHECK_THROWS_WITH_AS(parser_helper("\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: missing closing quote; last read: '\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: missing closing quote; last read: '\"\\\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u0\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u0\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u01\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u01\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u012\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u012\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u0"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u0'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u01"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u01'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u012"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u012'", json::parse_error&);
+
+        // invalid escapes
+        for (int c = 1; c < 128; ++c)
+        {
+            auto s = std::string("\"\\") + std::string(1, static_cast<char>(c)) + "\"";
+
+            switch (c)
+            {
+                // valid escapes
+                case ('"'):
+                case ('\\'):
+                case ('/'):
+                case ('b'):
+                case ('f'):
+                case ('n'):
+                case ('r'):
+                case ('t'):
+                {
+                    CHECK_NOTHROW(parser_helper(s));
+                    break;
+                }
+
+                // \u must be followed with four numbers, so we skip it here
+                case ('u'):
+                {
+                    break;
+                }
+
+                // any other combination of backslash and character is invalid
+                default:
+                {
+                    CHECK_THROWS_AS(parser_helper(s), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid string: forbidden character after backslash; last read: '\"\\" + std::string(1, static_cast<char>(c)) + "'");
+                    }
+                    break;
+                }
+            }
+        }
+
+        // invalid \uxxxx escapes
+        {
+            // check whether character is a valid hex character
+            const auto valid = [](int c)
+            {
+                switch (c)
+                {
+                    case ('0'):
+                    case ('1'):
+                    case ('2'):
+                    case ('3'):
+                    case ('4'):
+                    case ('5'):
+                    case ('6'):
+                    case ('7'):
+                    case ('8'):
+                    case ('9'):
+                    case ('a'):
+                    case ('b'):
+                    case ('c'):
+                    case ('d'):
+                    case ('e'):
+                    case ('f'):
+                    case ('A'):
+                    case ('B'):
+                    case ('C'):
+                    case ('D'):
+                    case ('E'):
+                    case ('F'):
+                    {
+                        return true;
+                    }
+
+                    default:
+                    {
+                        return false;
+                    }
+                }
+            };
+
+            for (int c = 1; c < 128; ++c)
+            {
+                std::string const s = "\"\\u";
+
+                // create a string with the iterated character at each position
+                auto s1 = s + "000" + std::string(1, static_cast<char>(c)) + "\"";
+                auto s2 = s + "00" + std::string(1, static_cast<char>(c)) + "0\"";
+                auto s3 = s + "0" + std::string(1, static_cast<char>(c)) + "00\"";
+                auto s4 = s + std::string(1, static_cast<char>(c)) + "000\"";
+
+                if (valid(c))
+                {
+                    CAPTURE(s1)
+                    CHECK_NOTHROW(parser_helper(s1));
+                    CAPTURE(s2)
+                    CHECK_NOTHROW(parser_helper(s2));
+                    CAPTURE(s3)
+                    CHECK_NOTHROW(parser_helper(s3));
+                    CAPTURE(s4)
+                    CHECK_NOTHROW(parser_helper(s4));
+                }
+                else
+                {
+                    CAPTURE(s1)
+                    CHECK_THROWS_AS(parser_helper(s1), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s1),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s1.substr(0, 7) + "'");
+                    }
+
+                    CAPTURE(s2)
+                    CHECK_THROWS_AS(parser_helper(s2), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s2),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s2.substr(0, 6) + "'");
+                    }
+
+                    CAPTURE(s3)
+                    CHECK_THROWS_AS(parser_helper(s3), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s3),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s3.substr(0, 5) + "'");
+                    }
+
+                    CAPTURE(s4)
+                    CHECK_THROWS_AS(parser_helper(s4), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s4),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s4.substr(0, 4) + "'");
+                    }
+                }
+            }
+        }
+
+        json _;
+
+        // missing part of a surrogate pair
+        CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\""), "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\"'", json::parse_error&);
+        // invalid surrogate pair
+        CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\uD80C\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\uD80C'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\u0000\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\u0000'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\uFFFF\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\uFFFF'", json::parse_error&);
+    }
+
+    SECTION("parse errors (accept)")
+    {
+        // unexpected end of number
+        CHECK(accept_helper("0.") == false);
+        CHECK(accept_helper("-") == false);
+        CHECK(accept_helper("--") == false);
+        CHECK(accept_helper("-0.") == false);
+        CHECK(accept_helper("-.") == false);
+        CHECK(accept_helper("-:") == false);
+        CHECK(accept_helper("0.:") == false);
+        CHECK(accept_helper("e.") == false);
+        CHECK(accept_helper("1e.") == false);
+        CHECK(accept_helper("1e/") == false);
+        CHECK(accept_helper("1e:") == false);
+        CHECK(accept_helper("1E.") == false);
+        CHECK(accept_helper("1E/") == false);
+        CHECK(accept_helper("1E:") == false);
+
+        // unexpected end of null
+        CHECK(accept_helper("n") == false);
+        CHECK(accept_helper("nu") == false);
+        CHECK(accept_helper("nul") == false);
+
+        // unexpected end of true
+        CHECK(accept_helper("t") == false);
+        CHECK(accept_helper("tr") == false);
+        CHECK(accept_helper("tru") == false);
+
+        // unexpected end of false
+        CHECK(accept_helper("f") == false);
+        CHECK(accept_helper("fa") == false);
+        CHECK(accept_helper("fal") == false);
+        CHECK(accept_helper("fals") == false);
+
+        // missing/unexpected end of array
+        CHECK(accept_helper("[") == false);
+        CHECK(accept_helper("[1") == false);
+        CHECK(accept_helper("[1,") == false);
+        CHECK(accept_helper("[1,]") == false);
+        CHECK(accept_helper("]") == false);
+
+        // missing/unexpected end of object
+        CHECK(accept_helper("{") == false);
+        CHECK(accept_helper("{\"foo\"") == false);
+        CHECK(accept_helper("{\"foo\":") == false);
+        CHECK(accept_helper("{\"foo\":}") == false);
+        CHECK(accept_helper("{\"foo\":1,}") == false);
+        CHECK(accept_helper("}") == false);
+
+        // missing/unexpected end of string
+        CHECK(accept_helper("\"") == false);
+        CHECK(accept_helper("\"\\\"") == false);
+        CHECK(accept_helper("\"\\u\"") == false);
+        CHECK(accept_helper("\"\\u0\"") == false);
+        CHECK(accept_helper("\"\\u01\"") == false);
+        CHECK(accept_helper("\"\\u012\"") == false);
+        CHECK(accept_helper("\"\\u") == false);
+        CHECK(accept_helper("\"\\u0") == false);
+        CHECK(accept_helper("\"\\u01") == false);
+        CHECK(accept_helper("\"\\u012") == false);
+
+        // unget of newline
+        CHECK(parser_helper("\n123\n") == 123);
+
+        // invalid escapes
+        for (int c = 1; c < 128; ++c)
+        {
+            auto s = std::string("\"\\") + std::string(1, static_cast<char>(c)) + "\"";
+
+            switch (c)
+            {
+                // valid escapes
+                case ('"'):
+                case ('\\'):
+                case ('/'):
+                case ('b'):
+                case ('f'):
+                case ('n'):
+                case ('r'):
+                case ('t'):
+                {
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept());
+                    break;
+                }
+
+                // \u must be followed with four numbers, so we skip it here
+                case ('u'):
+                {
+                    break;
+                }
+
+                // any other combination of backslash and character is invalid
+                default:
+                {
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept() == false);
+                    break;
+                }
+            }
+        }
+
+        // invalid \uxxxx escapes
+        {
+            // check whether character is a valid hex character
+            const auto valid = [](int c)
+            {
+                switch (c)
+                {
+                    case ('0'):
+                    case ('1'):
+                    case ('2'):
+                    case ('3'):
+                    case ('4'):
+                    case ('5'):
+                    case ('6'):
+                    case ('7'):
+                    case ('8'):
+                    case ('9'):
+                    case ('a'):
+                    case ('b'):
+                    case ('c'):
+                    case ('d'):
+                    case ('e'):
+                    case ('f'):
+                    case ('A'):
+                    case ('B'):
+                    case ('C'):
+                    case ('D'):
+                    case ('E'):
+                    case ('F'):
+                    {
+                        return true;
+                    }
+
+                    default:
+                    {
+                        return false;
+                    }
+                }
+            };
+
+            for (int c = 1; c < 128; ++c)
+            {
+                std::string const s = "\"\\u";
+
+                // create a string with the iterated character at each position
+                const auto s1 = s + "000" + std::string(1, static_cast<char>(c)) + "\"";
+                const auto s2 = s + "00" + std::string(1, static_cast<char>(c)) + "0\"";
+                const auto s3 = s + "0" + std::string(1, static_cast<char>(c)) + "00\"";
+                const auto s4 = s + std::string(1, static_cast<char>(c)) + "000\"";
+
+                if (valid(c))
+                {
+                    CAPTURE(s1)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s1)).accept());
+                    CAPTURE(s2)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s2)).accept());
+                    CAPTURE(s3)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s3)).accept());
+                    CAPTURE(s4)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s4)).accept());
+                }
+                else
+                {
+                    CAPTURE(s1)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s1)).accept() == false);
+
+                    CAPTURE(s2)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s2)).accept() == false);
+
+                    CAPTURE(s3)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s3)).accept() == false);
+
+                    CAPTURE(s4)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s4)).accept() == false);
+                }
+            }
+        }
+
+        // missing part of a surrogate pair
+        CHECK(accept_helper("\"\\uD80C\"") == false);
+        // invalid surrogate pair
+        CHECK(accept_helper("\"\\uD80C\\uD80C\"") == false);
+        CHECK(accept_helper("\"\\uD80C\\u0000\"") == false);
+        CHECK(accept_helper("\"\\uD80C\\uFFFF\"") == false);
+    }
+
+    SECTION("tests found by mutate++")
+    {
+        // test case to make sure no comma precedes the first key
+        CHECK_THROWS_WITH_AS(parser_helper("{,\"key\": false}"), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing object key - unexpected ','; expected string literal", json::parse_error&);
+        // test case to make sure an object is properly closed
+        CHECK_THROWS_WITH_AS(parser_helper("[{\"key\": false true]"), "[json.exception.parse_error.101] parse error at line 1, column 19: syntax error while parsing object - unexpected true literal; expected '}'", json::parse_error&);
+
+        // test case to make sure the callback is properly evaluated after reading a key
+        {
+            json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t event, json& /*unused*/) noexcept
+            {
+                return event != json::parse_event_t::key;
+            };
+
+            json x = json::parse("{\"key\": false}", cb);
+            CHECK(x == json::object());
+        }
+    }
+
+    SECTION("callback function")
+    {
+        const auto* s_object = R"(
+            {
+                "foo": 2,
+                "bar": {
+                    "baz": 1
+                }
+            }
+        )";
+
+        const auto* s_array = R"(
+            [1,2,[3,4,5],4,5]
+        )";
+
+        const auto* structured_array = R"(
+            [
+                1,
+                {
+                     "foo": "bar"
+                },
+                {
+                     "qux": "baz"
+                }
+            ]
+        )";
+
+        SECTION("filter nothing")
+        {
+            json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+            {
+                return true;
+            });
+
+            CHECK (j_object == json({{"foo", 2}, {"bar", {{"baz", 1}}}}));
+
+            json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+            {
+                return true;
+            });
+
+            CHECK (j_array == json({1, 2, {3, 4, 5}, 4, 5}));
+        }
+
+        SECTION("filter everything")
+        {
+            json const j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+            {
+                return false;
+            });
+
+            // the top-level object will be discarded, leaving a null
+            CHECK (j_object.is_null());
+
+            json const j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+            {
+                return false;
+            });
+
+            // the top-level array will be discarded, leaving a null
+            CHECK (j_array.is_null());
+        }
+
+        SECTION("filter specific element")
+        {
+            json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t event, const json & j) noexcept
+            {
+                // filter all number(2) elements
+                return event != json::parse_event_t::value || j != json(2);
+            });
+
+            CHECK (j_object == json({{"bar", {{"baz", 1}}}}));
+
+            json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t event, const json & j) noexcept
+            {
+                return event != json::parse_event_t::value || j != json(2);
+            });
+
+            CHECK (j_array == json({1, {3, 4, 5}, 4, 5}));
+        }
+
+        SECTION("filter object in array")
+        {
+            json j_filtered1 = json::parse(structured_array, [](int /*unused*/, json::parse_event_t e, const json & parsed)
+            {
+                return !(e == json::parse_event_t::object_end && parsed.contains("foo"));
+            });
+
+            // the specified object will be discarded, and removed.
+            CHECK (j_filtered1.size() == 2);
+            CHECK (j_filtered1 == json({1, {{"qux", "baz"}}}));
+
+            json j_filtered2 = json::parse(structured_array, [](int /*unused*/, json::parse_event_t e, const json& /*parsed*/) noexcept
+            {
+                return e != json::parse_event_t::object_end;
+            });
+
+            // removed all objects in array.
+            CHECK (j_filtered2.size() == 1);
+            CHECK (j_filtered2 == json({1}));
+        }
+
+        SECTION("filter specific events")
+        {
+            SECTION("first closing event")
+            {
+                {
+                    json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept
+                    {
+                        static bool first = true;
+                        if (e == json::parse_event_t::object_end && first)
+                        {
+                            first = false;
+                            return false;
+                        }
+
+                        return true;
+                    });
+
+                    // the first completed object will be discarded
+                    CHECK (j_object == json({{"foo", 2}}));
+                }
+
+                {
+                    json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept
+                    {
+                        static bool first = true;
+                        if (e == json::parse_event_t::array_end && first)
+                        {
+                            first = false;
+                            return false;
+                        }
+
+                        return true;
+                    });
+
+                    // the first completed array will be discarded
+                    CHECK (j_array == json({1, 2, 4, 5}));
+                }
+            }
+        }
+
+        SECTION("special cases")
+        {
+            // the following test cases cover the situation in which an empty
+            // object and array is discarded only after the closing character
+            // has been read
+
+            json j_empty_object = json::parse("{}", [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept
+            {
+                return e != json::parse_event_t::object_end;
+            });
+            CHECK(j_empty_object == json());
+
+            json j_empty_array = json::parse("[]", [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept
+            {
+                return e != json::parse_event_t::array_end;
+            });
+            CHECK(j_empty_array == json());
+        }
+    }
+
+    SECTION("constructing from contiguous containers")
+    {
+        SECTION("from std::vector")
+        {
+            std::vector<uint8_t> v = {'t', 'r', 'u', 'e'};
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from std::array")
+        {
+            std::array<uint8_t, 5> v { {'t', 'r', 'u', 'e'} };
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from array")
+        {
+            uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from char literal")
+        {
+            CHECK(parser_helper("true") == json(true));
+        }
+
+        SECTION("from std::string")
+        {
+            std::string v = {'t', 'r', 'u', 'e'};
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from std::initializer_list")
+        {
+            std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'};
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from std::valarray")
+        {
+            std::valarray<uint8_t> v = {'t', 'r', 'u', 'e'};
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+    }
+
+    SECTION("improve test coverage")
+    {
+        SECTION("parser with callback")
+        {
+            json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t /*unused*/, json& /*unused*/) noexcept
+            {
+                return true;
+            };
+
+            CHECK(json::parse("{\"foo\": true:", cb, false).is_discarded());
+
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::parse("{\"foo\": true:", cb), "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing object - unexpected ':'; expected '}'", json::parse_error&);
+
+            CHECK_THROWS_WITH_AS(_ = json::parse("1.18973e+4932", cb), "[json.exception.out_of_range.406] number overflow parsing '1.18973e+4932'", json::out_of_range&);
+        }
+
+        SECTION("SAX parser")
+        {
+            SECTION("} without value")
+            {
+                SaxCountdown s(1);
+                CHECK(json::sax_parse("{}", &s) == false);
+            }
+
+            SECTION("} with value")
+            {
+                SaxCountdown s(3);
+                CHECK(json::sax_parse("{\"k1\": true}", &s) == false);
+            }
+
+            SECTION("second key")
+            {
+                SaxCountdown s(3);
+                CHECK(json::sax_parse("{\"k1\": true, \"k2\": false}", &s) == false);
+            }
+
+            SECTION("] without value")
+            {
+                SaxCountdown s(1);
+                CHECK(json::sax_parse("[]", &s) == false);
+            }
+
+            SECTION("] with value")
+            {
+                SaxCountdown s(2);
+                CHECK(json::sax_parse("[1]", &s) == false);
+            }
+
+            SECTION("float")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("3.14", &s) == false);
+            }
+
+            SECTION("false")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("false", &s) == false);
+            }
+
+            SECTION("null")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("null", &s) == false);
+            }
+
+            SECTION("true")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("true", &s) == false);
+            }
+
+            SECTION("unsigned")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("12", &s) == false);
+            }
+
+            SECTION("integer")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("-12", &s) == false);
+            }
+
+            SECTION("string")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("\"foo\"", &s) == false);
+            }
+        }
+    }
+
+    SECTION("error messages for comments")
+    {
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::parse("/a", nullptr, true, true), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid comment; expecting '/' or '*' after '/'; last read: '/a'", json::parse_error);
+        CHECK_THROWS_WITH_AS(_ = json::parse("/*", nullptr, true, true), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid comment; missing closing '*/'; last read: '/*<U+0000>'", json::parse_error);
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_parser_diagnostic_positions.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_parser_diagnostic_positions.cpp
new file mode 100644
index 00000000..b4ef434d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-class_parser_diagnostic_positions.cpp
@@ -0,0 +1,1957 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+#define JSON_TESTS_PRIVATE
+#ifdef JSON_DIAGNOSTIC_POSITIONS
+    #undef JSON_DIAGNOSTIC_POSITIONS
+#endif
+
+#define JSON_DIAGNOSTIC_POSITIONS 1
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <valarray>
+
+namespace
+{
+class SaxEventLogger
+{
+  public:
+    bool null()
+    {
+        events.emplace_back("null()");
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        events.emplace_back(val ? "boolean(true)" : "boolean(false)");
+        return true;
+    }
+
+    bool number_integer(json::number_integer_t val)
+    {
+        events.push_back("number_integer(" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_unsigned(json::number_unsigned_t val)
+    {
+        events.push_back("number_unsigned(" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_float(json::number_float_t /*unused*/, const std::string& s)
+    {
+        events.push_back("number_float(" + s + ")");
+        return true;
+    }
+
+    bool string(std::string& val)
+    {
+        events.push_back("string(" + val + ")");
+        return true;
+    }
+
+    bool binary(json::binary_t& val)
+    {
+        std::string binary_contents = "binary(";
+        std::string comma_space;
+        for (auto b : val)
+        {
+            binary_contents.append(comma_space);
+            binary_contents.append(std::to_string(static_cast<int>(b)));
+            comma_space = ", ";
+        }
+        binary_contents.append(")");
+        events.push_back(binary_contents);
+        return true;
+    }
+
+    bool start_object(std::size_t elements)
+    {
+        if (elements == static_cast<std::size_t>(-1))
+        {
+            events.emplace_back("start_object()");
+        }
+        else
+        {
+            events.push_back("start_object(" + std::to_string(elements) + ")");
+        }
+        return true;
+    }
+
+    bool key(std::string& val)
+    {
+        events.push_back("key(" + val + ")");
+        return true;
+    }
+
+    bool end_object()
+    {
+        events.emplace_back("end_object()");
+        return true;
+    }
+
+    bool start_array(std::size_t elements)
+    {
+        if (elements == static_cast<std::size_t>(-1))
+        {
+            events.emplace_back("start_array()");
+        }
+        else
+        {
+            events.push_back("start_array(" + std::to_string(elements) + ")");
+        }
+        return true;
+    }
+
+    bool end_array()
+    {
+        events.emplace_back("end_array()");
+        return true;
+    }
+
+    bool parse_error(std::size_t position, const std::string& /*unused*/, const json::exception& /*unused*/)
+    {
+        errored = true;
+        events.push_back("parse_error(" + std::to_string(position) + ")");
+        return false;
+    }
+
+    std::vector<std::string> events {}; // NOLINT(readability-redundant-member-init)
+    bool errored = false;
+};
+
+class SaxCountdown : public nlohmann::json::json_sax_t
+{
+  public:
+    explicit SaxCountdown(const int count) : events_left(count)
+    {}
+
+    bool null() override
+    {
+        return events_left-- > 0;
+    }
+
+    bool boolean(bool /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_integer(json::number_integer_t /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_unsigned(json::number_unsigned_t /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_float(json::number_float_t /*val*/, const std::string& /*s*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool string(std::string& /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool binary(json::binary_t& /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_object(std::size_t /*elements*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool key(std::string& /*val*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_object() override
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_array(std::size_t /*elements*/) override
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_array() override
+    {
+        return events_left-- > 0;
+    }
+
+    bool parse_error(std::size_t /*position*/, const std::string& /*last_token*/, const json::exception& /*ex*/) override
+    {
+        return false;
+    }
+
+  private:
+    int events_left = 0;
+};
+
+json parser_helper(const std::string& s);
+bool accept_helper(const std::string& s);
+void comments_helper(const std::string& s);
+
+json parser_helper(const std::string& s)
+{
+    json j;
+    json::parser(nlohmann::detail::input_adapter(s)).parse(true, j);
+
+    // if this line was reached, no exception occurred
+    // -> check if result is the same without exceptions
+    json j_nothrow;
+    CHECK_NOTHROW(json::parser(nlohmann::detail::input_adapter(s), nullptr, false).parse(true, j_nothrow));
+    CHECK(j_nothrow == j);
+
+    json j_sax;
+    nlohmann::detail::json_sax_dom_parser<json, nlohmann::detail::string_input_adapter_type> sdp(j_sax);
+    json::sax_parse(s, &sdp);
+    CHECK(j_sax == j);
+
+    comments_helper(s);
+
+    return j;
+}
+
+bool accept_helper(const std::string& s)
+{
+    CAPTURE(s)
+
+    // 1. parse s without exceptions
+    json j;
+    CHECK_NOTHROW(json::parser(nlohmann::detail::input_adapter(s), nullptr, false).parse(true, j));
+    const bool ok_noexcept = !j.is_discarded();
+
+    // 2. accept s
+    const bool ok_accept = json::parser(nlohmann::detail::input_adapter(s)).accept(true);
+
+    // 3. check if both approaches come to the same result
+    CHECK(ok_noexcept == ok_accept);
+
+    // 4. parse with SAX (compare with relaxed accept result)
+    SaxEventLogger el;
+    CHECK_NOTHROW(json::sax_parse(s, &el, json::input_format_t::json, false));
+    CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept(false) == !el.errored);
+
+    // 5. parse with simple callback
+    json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t /*unused*/, json& /*unused*/) noexcept
+    {
+        return true;
+    };
+    json const j_cb = json::parse(s, cb, false);
+    const bool ok_noexcept_cb = !j_cb.is_discarded();
+
+    // 6. check if this approach came to the same result
+    CHECK(ok_noexcept == ok_noexcept_cb);
+
+    // 7. check if comments are properly ignored
+    if (ok_accept)
+    {
+        comments_helper(s);
+    }
+
+    // 8. return result
+    return ok_accept;
+}
+
+void comments_helper(const std::string& s)
+{
+    json _;
+
+    // parse/accept with default parser
+    CHECK_NOTHROW(_ = json::parse(s));
+    CHECK(json::accept(s));
+
+    // parse/accept while skipping comments
+    CHECK_NOTHROW(_ = json::parse(s, nullptr, false, true));
+    CHECK(json::accept(s, true));
+
+    std::vector<std::string> json_with_comments;
+
+    // start with a comment
+    json_with_comments.push_back(std::string("// this is a comment\n") + s);
+    json_with_comments.push_back(std::string("/* this is a comment */") + s);
+    // end with a comment
+    json_with_comments.push_back(s + "// this is a comment");
+    json_with_comments.push_back(s + "/* this is a comment */");
+
+    // check all strings
+    for (const auto& json_with_comment : json_with_comments)
+    {
+        CAPTURE(json_with_comment)
+        CHECK_THROWS_AS(_ = json::parse(json_with_comment), json::parse_error);
+        CHECK(!json::accept(json_with_comment));
+
+        CHECK_NOTHROW(_ = json::parse(json_with_comment, nullptr, true, true));
+        CHECK(json::accept(json_with_comment, true));
+    }
+}
+
+/**
+ * Validates that the generated JSON object is the same as expected
+ * Validates that the start position and end position match the start and end of the string
+ *
+ * This check assumes that there is no whitespace around the json object in the original string.
+ */
+void validate_generated_json_and_start_end_pos_helper(const std::string& original_string, const json& j, const json& check)
+{
+    CHECK(j == check);
+    CHECK(j.start_pos() == 0);
+    CHECK(j.end_pos() == original_string.size());
+}
+
+/**
+ * Parses the root object from the given root string and validates that the start and end positions for the nested object are correct.
+ *
+ * This checks that whitespace around the nested object is included in the start and end positions of the root object.
+ */
+void validate_start_end_pos_for_nested_obj_helper(const std::string& nested_type_json_str, const std::string& root_type_json_str, const json& expected_json, const json::parser_callback_t& cb = nullptr)
+{
+    json j;
+
+    // 1. If callback is provided, use callback version of parse()
+    if (cb)
+    {
+        j = json::parse(root_type_json_str, cb);
+    }
+    else
+    {
+        j = json::parse(root_type_json_str);
+    }
+
+    // 2. Check if the generated JSON is as expected
+    // Assumptions: The root_type_json_str does not have any whitespace around the json object
+    validate_generated_json_and_start_end_pos_helper(root_type_json_str, j, expected_json);
+
+    // 3. Get the nested object
+    const auto& nested = j["nested"];
+    // 4. Check if the start and end positions are generated correctly for nested objects and arrays
+    CHECK(nested_type_json_str == root_type_json_str.substr(nested.start_pos(), nested.end_pos() - nested.start_pos()));
+}
+
+} // namespace
+
+TEST_CASE("parser class")
+{
+    SECTION("parse")
+    {
+        SECTION("null")
+        {
+            CHECK(parser_helper("null") == json(nullptr));
+        }
+
+        SECTION("true")
+        {
+            CHECK(parser_helper("true") == json(true));
+        }
+
+        SECTION("false")
+        {
+            CHECK(parser_helper("false") == json(false));
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty array")
+            {
+                CHECK(parser_helper("[]") == json(json::value_t::array));
+                CHECK(parser_helper("[ ]") == json(json::value_t::array));
+            }
+
+            SECTION("nonempty array")
+            {
+                CHECK(parser_helper("[true, false, null]") == json({true, false, nullptr}));
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty object")
+            {
+                CHECK(parser_helper("{}") == json(json::value_t::object));
+                CHECK(parser_helper("{ }") == json(json::value_t::object));
+            }
+
+            SECTION("nonempty object")
+            {
+                CHECK(parser_helper("{\"\": true, \"one\": 1, \"two\": null}") == json({{"", true}, {"one", 1}, {"two", nullptr}}));
+            }
+        }
+
+        SECTION("string")
+        {
+            // empty string
+            CHECK(parser_helper("\"\"") == json(json::value_t::string));
+
+            SECTION("errors")
+            {
+                // error: tab in string
+                CHECK_THROWS_WITH_AS(parser_helper("\"\t\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t; last read: '\"<U+0009>'", json::parse_error&);
+                // error: newline in string
+                CHECK_THROWS_WITH_AS(parser_helper("\"\n\""), "[json.exception.parse_error.101] parse error at line 2, column 0: syntax error while parsing value - invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n; last read: '\"<U+000A>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\r\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r; last read: '\"<U+000D>'", json::parse_error&);
+                // error: backspace in string
+                CHECK_THROWS_WITH_AS(parser_helper("\"\b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b; last read: '\"<U+0008>'", json::parse_error&);
+                // improve code coverage
+                CHECK_THROWS_AS(parser_helper("\uFF01"), json::parse_error&);
+                CHECK_THROWS_AS(parser_helper("[-4:1,]"), json::parse_error&);
+                // unescaped control characters
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x00\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: missing closing quote; last read: '\"'", json::parse_error&); // NOLINT(bugprone-string-literal-with-embedded-nul)
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x01\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0001 (SOH) must be escaped to \\u0001; last read: '\"<U+0001>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x02\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0002 (STX) must be escaped to \\u0002; last read: '\"<U+0002>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x03\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0003 (ETX) must be escaped to \\u0003; last read: '\"<U+0003>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x04\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0004 (EOT) must be escaped to \\u0004; last read: '\"<U+0004>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x05\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0005 (ENQ) must be escaped to \\u0005; last read: '\"<U+0005>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x06\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0006 (ACK) must be escaped to \\u0006; last read: '\"<U+0006>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x07\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0007 (BEL) must be escaped to \\u0007; last read: '\"<U+0007>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x08\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b; last read: '\"<U+0008>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x09\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t; last read: '\"<U+0009>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0a\""), "[json.exception.parse_error.101] parse error at line 2, column 0: syntax error while parsing value - invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n; last read: '\"<U+000A>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000B (VT) must be escaped to \\u000B; last read: '\"<U+000B>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0c\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f; last read: '\"<U+000C>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0d\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r; last read: '\"<U+000D>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0e\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000E (SO) must be escaped to \\u000E; last read: '\"<U+000E>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x0f\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+000F (SI) must be escaped to \\u000F; last read: '\"<U+000F>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x10\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0010 (DLE) must be escaped to \\u0010; last read: '\"<U+0010>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x11\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0011 (DC1) must be escaped to \\u0011; last read: '\"<U+0011>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x12\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0012 (DC2) must be escaped to \\u0012; last read: '\"<U+0012>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x13\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0013 (DC3) must be escaped to \\u0013; last read: '\"<U+0013>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x14\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0014 (DC4) must be escaped to \\u0014; last read: '\"<U+0014>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x15\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0015 (NAK) must be escaped to \\u0015; last read: '\"<U+0015>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x16\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0016 (SYN) must be escaped to \\u0016; last read: '\"<U+0016>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x17\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0017 (ETB) must be escaped to \\u0017; last read: '\"<U+0017>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x18\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0018 (CAN) must be escaped to \\u0018; last read: '\"<U+0018>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x19\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0019 (EM) must be escaped to \\u0019; last read: '\"<U+0019>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1a\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001A (SUB) must be escaped to \\u001A; last read: '\"<U+001A>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1b\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001B (ESC) must be escaped to \\u001B; last read: '\"<U+001B>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1c\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001C (FS) must be escaped to \\u001C; last read: '\"<U+001C>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1d\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001D (GS) must be escaped to \\u001D; last read: '\"<U+001D>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1e\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001E (RS) must be escaped to \\u001E; last read: '\"<U+001E>'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("\"\x1f\""), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+001F (US) must be escaped to \\u001F; last read: '\"<U+001F>'", json::parse_error&);
+
+                SECTION("additional test for null byte")
+                {
+                    // The test above for the null byte is wrong, because passing
+                    // a string to the parser only reads int until it encounters
+                    // a null byte. This test inserts the null byte later on and
+                    // uses an iterator range.
+                    std::string s = "\"1\"";
+                    s[1] = '\0';
+                    json _;
+                    CHECK_THROWS_WITH_AS(_ = json::parse(s.begin(), s.end()), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: control character U+0000 (NUL) must be escaped to \\u0000; last read: '\"<U+0000>'", json::parse_error&);
+                }
+            }
+
+            SECTION("escaped")
+            {
+                // quotation mark "\""
+                auto r1 = R"("\"")"_json;
+                CHECK(parser_helper("\"\\\"\"") == r1);
+                // reverse solidus "\\"
+                auto r2 = R"("\\")"_json;
+                CHECK(parser_helper("\"\\\\\"") == r2);
+                // solidus
+                CHECK(parser_helper("\"\\/\"") == R"("/")"_json);
+                // backspace
+                CHECK(parser_helper("\"\\b\"") == json("\b"));
+                // formfeed
+                CHECK(parser_helper("\"\\f\"") == json("\f"));
+                // newline
+                CHECK(parser_helper("\"\\n\"") == json("\n"));
+                // carriage return
+                CHECK(parser_helper("\"\\r\"") == json("\r"));
+                // horizontal tab
+                CHECK(parser_helper("\"\\t\"") == json("\t"));
+
+                CHECK(parser_helper("\"\\u0001\"").get<json::string_t>() == "\x01");
+                CHECK(parser_helper("\"\\u000a\"").get<json::string_t>() == "\n");
+                CHECK(parser_helper("\"\\u00b0\"").get<json::string_t>() == "°");
+                CHECK(parser_helper("\"\\u0c00\"").get<json::string_t>() == "ఀ");
+                CHECK(parser_helper("\"\\ud000\"").get<json::string_t>() == "퀀");
+                CHECK(parser_helper("\"\\u000E\"").get<json::string_t>() == "\x0E");
+                CHECK(parser_helper("\"\\u00F0\"").get<json::string_t>() == "ð");
+                CHECK(parser_helper("\"\\u0100\"").get<json::string_t>() == "Ā");
+                CHECK(parser_helper("\"\\u2000\"").get<json::string_t>() == " ");
+                CHECK(parser_helper("\"\\uFFFF\"").get<json::string_t>() == "￿");
+                CHECK(parser_helper("\"\\u20AC\"").get<json::string_t>() == "€");
+                CHECK(parser_helper("\"€\"").get<json::string_t>() == "€");
+                CHECK(parser_helper("\"🎈\"").get<json::string_t>() == "🎈");
+
+                CHECK(parser_helper("\"\\ud80c\\udc60\"").get<json::string_t>() == "\xf0\x93\x81\xa0");
+                CHECK(parser_helper("\"\\ud83c\\udf1e\"").get<json::string_t>() == "🌞");
+            }
+        }
+
+        SECTION("number")
+        {
+            SECTION("integers")
+            {
+                SECTION("without exponent")
+                {
+                    CHECK(parser_helper("-128") == json(-128));
+                    CHECK(parser_helper("-0") == json(-0));
+                    CHECK(parser_helper("0") == json(0));
+                    CHECK(parser_helper("128") == json(128));
+                }
+
+                SECTION("with exponent")
+                {
+                    CHECK(parser_helper("0e1") == json(0e1));
+                    CHECK(parser_helper("0E1") == json(0e1));
+
+                    CHECK(parser_helper("10000E-4") == json(10000e-4));
+                    CHECK(parser_helper("10000E-3") == json(10000e-3));
+                    CHECK(parser_helper("10000E-2") == json(10000e-2));
+                    CHECK(parser_helper("10000E-1") == json(10000e-1));
+                    CHECK(parser_helper("10000E0") == json(10000e0));
+                    CHECK(parser_helper("10000E1") == json(10000e1));
+                    CHECK(parser_helper("10000E2") == json(10000e2));
+                    CHECK(parser_helper("10000E3") == json(10000e3));
+                    CHECK(parser_helper("10000E4") == json(10000e4));
+
+                    CHECK(parser_helper("10000e-4") == json(10000e-4));
+                    CHECK(parser_helper("10000e-3") == json(10000e-3));
+                    CHECK(parser_helper("10000e-2") == json(10000e-2));
+                    CHECK(parser_helper("10000e-1") == json(10000e-1));
+                    CHECK(parser_helper("10000e0") == json(10000e0));
+                    CHECK(parser_helper("10000e1") == json(10000e1));
+                    CHECK(parser_helper("10000e2") == json(10000e2));
+                    CHECK(parser_helper("10000e3") == json(10000e3));
+                    CHECK(parser_helper("10000e4") == json(10000e4));
+
+                    CHECK(parser_helper("-0e1") == json(-0e1));
+                    CHECK(parser_helper("-0E1") == json(-0e1));
+                    CHECK(parser_helper("-0E123") == json(-0e123));
+
+                    // numbers after exponent
+                    CHECK(parser_helper("10E0") == json(10e0));
+                    CHECK(parser_helper("10E1") == json(10e1));
+                    CHECK(parser_helper("10E2") == json(10e2));
+                    CHECK(parser_helper("10E3") == json(10e3));
+                    CHECK(parser_helper("10E4") == json(10e4));
+                    CHECK(parser_helper("10E5") == json(10e5));
+                    CHECK(parser_helper("10E6") == json(10e6));
+                    CHECK(parser_helper("10E7") == json(10e7));
+                    CHECK(parser_helper("10E8") == json(10e8));
+                    CHECK(parser_helper("10E9") == json(10e9));
+                    CHECK(parser_helper("10E+0") == json(10e0));
+                    CHECK(parser_helper("10E+1") == json(10e1));
+                    CHECK(parser_helper("10E+2") == json(10e2));
+                    CHECK(parser_helper("10E+3") == json(10e3));
+                    CHECK(parser_helper("10E+4") == json(10e4));
+                    CHECK(parser_helper("10E+5") == json(10e5));
+                    CHECK(parser_helper("10E+6") == json(10e6));
+                    CHECK(parser_helper("10E+7") == json(10e7));
+                    CHECK(parser_helper("10E+8") == json(10e8));
+                    CHECK(parser_helper("10E+9") == json(10e9));
+                    CHECK(parser_helper("10E-1") == json(10e-1));
+                    CHECK(parser_helper("10E-2") == json(10e-2));
+                    CHECK(parser_helper("10E-3") == json(10e-3));
+                    CHECK(parser_helper("10E-4") == json(10e-4));
+                    CHECK(parser_helper("10E-5") == json(10e-5));
+                    CHECK(parser_helper("10E-6") == json(10e-6));
+                    CHECK(parser_helper("10E-7") == json(10e-7));
+                    CHECK(parser_helper("10E-8") == json(10e-8));
+                    CHECK(parser_helper("10E-9") == json(10e-9));
+                }
+
+                SECTION("edge cases")
+                {
+                    // From RFC8259, Section 6:
+                    // Note that when such software is used, numbers that are
+                    // integers and are in the range [-(2**53)+1, (2**53)-1]
+                    // are interoperable in the sense that implementations will
+                    // agree exactly on their numeric values.
+
+                    // -(2**53)+1
+                    CHECK(parser_helper("-9007199254740991").get<int64_t>() == -9007199254740991);
+                    // (2**53)-1
+                    CHECK(parser_helper("9007199254740991").get<int64_t>() == 9007199254740991);
+                }
+
+                SECTION("over the edge cases")  // issue #178 - Integer conversion to unsigned (incorrect handling of 64-bit integers)
+                {
+                    // While RFC8259, Section 6 specifies a preference for support
+                    // for ranges in range of IEEE 754-2008 binary64 (double precision)
+                    // this does not accommodate 64-bit integers without loss of accuracy.
+                    // As 64-bit integers are now widely used in software, it is desirable
+                    // to expand support to the full 64 bit (signed and unsigned) range
+                    // i.e. -(2**63) -> (2**64)-1.
+
+                    // -(2**63)    ** Note: compilers see negative literals as negated positive numbers (hence the -1))
+                    CHECK(parser_helper("-9223372036854775808").get<int64_t>() == -9223372036854775807 - 1);
+                    // (2**63)-1
+                    CHECK(parser_helper("9223372036854775807").get<int64_t>() == 9223372036854775807);
+                    // (2**64)-1
+                    CHECK(parser_helper("18446744073709551615").get<uint64_t>() == 18446744073709551615u);
+                }
+            }
+
+            SECTION("floating-point")
+            {
+                SECTION("without exponent")
+                {
+                    CHECK(parser_helper("-128.5") == json(-128.5));
+                    CHECK(parser_helper("0.999") == json(0.999));
+                    CHECK(parser_helper("128.5") == json(128.5));
+                    CHECK(parser_helper("-0.0") == json(-0.0));
+                }
+
+                SECTION("with exponent")
+                {
+                    CHECK(parser_helper("-128.5E3") == json(-128.5E3));
+                    CHECK(parser_helper("-128.5E-3") == json(-128.5E-3));
+                    CHECK(parser_helper("-0.0e1") == json(-0.0e1));
+                    CHECK(parser_helper("-0.0E1") == json(-0.0e1));
+                }
+            }
+
+            SECTION("overflow")
+            {
+                // overflows during parsing yield an exception
+                CHECK_THROWS_WITH_AS(parser_helper("1.18973e+4932").empty(), "[json.exception.out_of_range.406] number overflow parsing '1.18973e+4932'", json::out_of_range&);
+            }
+
+            SECTION("invalid numbers")
+            {
+                // numbers must not begin with "+"
+                CHECK_THROWS_AS(parser_helper("+1"), json::parse_error&);
+                CHECK_THROWS_AS(parser_helper("+0"), json::parse_error&);
+
+                CHECK_THROWS_WITH_AS(parser_helper("01"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - unexpected number literal; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-01"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - unexpected number literal; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("--1"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '--'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("1."),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '1.'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("1E"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("1E-"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '1E-'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("1.E1"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '1.E'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-1E"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '-1E'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0E#"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '-0E#'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0E-#"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '-0E-#'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0#"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: '-0#'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0.0:"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - unexpected ':'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0.0Z"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: '-0.0Z'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0E123:"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - unexpected ':'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0e0-:"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-:'; expected end of input", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0e-:"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid number; expected digit after exponent sign; last read: '-0e-:'", json::parse_error&);
+                CHECK_THROWS_WITH_AS(parser_helper("-0f"),
+                                     "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: '-0f'; expected end of input", json::parse_error&);
+            }
+        }
+    }
+
+    SECTION("accept")
+    {
+        SECTION("null")
+        {
+            CHECK(accept_helper("null"));
+        }
+
+        SECTION("true")
+        {
+            CHECK(accept_helper("true"));
+        }
+
+        SECTION("false")
+        {
+            CHECK(accept_helper("false"));
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty array")
+            {
+                CHECK(accept_helper("[]"));
+                CHECK(accept_helper("[ ]"));
+            }
+
+            SECTION("nonempty array")
+            {
+                CHECK(accept_helper("[true, false, null]"));
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty object")
+            {
+                CHECK(accept_helper("{}"));
+                CHECK(accept_helper("{ }"));
+            }
+
+            SECTION("nonempty object")
+            {
+                CHECK(accept_helper("{\"\": true, \"one\": 1, \"two\": null}"));
+            }
+        }
+
+        SECTION("string")
+        {
+            // empty string
+            CHECK(accept_helper("\"\""));
+
+            SECTION("errors")
+            {
+                // error: tab in string
+                CHECK(accept_helper("\"\t\"") == false);
+                // error: newline in string
+                CHECK(accept_helper("\"\n\"") == false);
+                CHECK(accept_helper("\"\r\"") == false);
+                // error: backspace in string
+                CHECK(accept_helper("\"\b\"") == false);
+                // improve code coverage
+                CHECK(accept_helper("\uFF01") == false);
+                CHECK(accept_helper("[-4:1,]") == false);
+                // unescaped control characters
+                CHECK(accept_helper("\"\x00\"") == false); // NOLINT(bugprone-string-literal-with-embedded-nul)
+                CHECK(accept_helper("\"\x01\"") == false);
+                CHECK(accept_helper("\"\x02\"") == false);
+                CHECK(accept_helper("\"\x03\"") == false);
+                CHECK(accept_helper("\"\x04\"") == false);
+                CHECK(accept_helper("\"\x05\"") == false);
+                CHECK(accept_helper("\"\x06\"") == false);
+                CHECK(accept_helper("\"\x07\"") == false);
+                CHECK(accept_helper("\"\x08\"") == false);
+                CHECK(accept_helper("\"\x09\"") == false);
+                CHECK(accept_helper("\"\x0a\"") == false);
+                CHECK(accept_helper("\"\x0b\"") == false);
+                CHECK(accept_helper("\"\x0c\"") == false);
+                CHECK(accept_helper("\"\x0d\"") == false);
+                CHECK(accept_helper("\"\x0e\"") == false);
+                CHECK(accept_helper("\"\x0f\"") == false);
+                CHECK(accept_helper("\"\x10\"") == false);
+                CHECK(accept_helper("\"\x11\"") == false);
+                CHECK(accept_helper("\"\x12\"") == false);
+                CHECK(accept_helper("\"\x13\"") == false);
+                CHECK(accept_helper("\"\x14\"") == false);
+                CHECK(accept_helper("\"\x15\"") == false);
+                CHECK(accept_helper("\"\x16\"") == false);
+                CHECK(accept_helper("\"\x17\"") == false);
+                CHECK(accept_helper("\"\x18\"") == false);
+                CHECK(accept_helper("\"\x19\"") == false);
+                CHECK(accept_helper("\"\x1a\"") == false);
+                CHECK(accept_helper("\"\x1b\"") == false);
+                CHECK(accept_helper("\"\x1c\"") == false);
+                CHECK(accept_helper("\"\x1d\"") == false);
+                CHECK(accept_helper("\"\x1e\"") == false);
+                CHECK(accept_helper("\"\x1f\"") == false);
+            }
+
+            SECTION("escaped")
+            {
+                // quotation mark "\""
+                auto r1 = R"("\"")"_json;
+                CHECK(accept_helper("\"\\\"\""));
+                // reverse solidus "\\"
+                auto r2 = R"("\\")"_json;
+                CHECK(accept_helper("\"\\\\\""));
+                // solidus
+                CHECK(accept_helper("\"\\/\""));
+                // backspace
+                CHECK(accept_helper("\"\\b\""));
+                // formfeed
+                CHECK(accept_helper("\"\\f\""));
+                // newline
+                CHECK(accept_helper("\"\\n\""));
+                // carriage return
+                CHECK(accept_helper("\"\\r\""));
+                // horizontal tab
+                CHECK(accept_helper("\"\\t\""));
+
+                CHECK(accept_helper("\"\\u0001\""));
+                CHECK(accept_helper("\"\\u000a\""));
+                CHECK(accept_helper("\"\\u00b0\""));
+                CHECK(accept_helper("\"\\u0c00\""));
+                CHECK(accept_helper("\"\\ud000\""));
+                CHECK(accept_helper("\"\\u000E\""));
+                CHECK(accept_helper("\"\\u00F0\""));
+                CHECK(accept_helper("\"\\u0100\""));
+                CHECK(accept_helper("\"\\u2000\""));
+                CHECK(accept_helper("\"\\uFFFF\""));
+                CHECK(accept_helper("\"\\u20AC\""));
+                CHECK(accept_helper("\"€\""));
+                CHECK(accept_helper("\"🎈\""));
+
+                CHECK(accept_helper("\"\\ud80c\\udc60\""));
+                CHECK(accept_helper("\"\\ud83c\\udf1e\""));
+            }
+        }
+
+        SECTION("number")
+        {
+            SECTION("integers")
+            {
+                SECTION("without exponent")
+                {
+                    CHECK(accept_helper("-128"));
+                    CHECK(accept_helper("-0"));
+                    CHECK(accept_helper("0"));
+                    CHECK(accept_helper("128"));
+                }
+
+                SECTION("with exponent")
+                {
+                    CHECK(accept_helper("0e1"));
+                    CHECK(accept_helper("0E1"));
+
+                    CHECK(accept_helper("10000E-4"));
+                    CHECK(accept_helper("10000E-3"));
+                    CHECK(accept_helper("10000E-2"));
+                    CHECK(accept_helper("10000E-1"));
+                    CHECK(accept_helper("10000E0"));
+                    CHECK(accept_helper("10000E1"));
+                    CHECK(accept_helper("10000E2"));
+                    CHECK(accept_helper("10000E3"));
+                    CHECK(accept_helper("10000E4"));
+
+                    CHECK(accept_helper("10000e-4"));
+                    CHECK(accept_helper("10000e-3"));
+                    CHECK(accept_helper("10000e-2"));
+                    CHECK(accept_helper("10000e-1"));
+                    CHECK(accept_helper("10000e0"));
+                    CHECK(accept_helper("10000e1"));
+                    CHECK(accept_helper("10000e2"));
+                    CHECK(accept_helper("10000e3"));
+                    CHECK(accept_helper("10000e4"));
+
+                    CHECK(accept_helper("-0e1"));
+                    CHECK(accept_helper("-0E1"));
+                    CHECK(accept_helper("-0E123"));
+                }
+
+                SECTION("edge cases")
+                {
+                    // From RFC8259, Section 6:
+                    // Note that when such software is used, numbers that are
+                    // integers and are in the range [-(2**53)+1, (2**53)-1]
+                    // are interoperable in the sense that implementations will
+                    // agree exactly on their numeric values.
+
+                    // -(2**53)+1
+                    CHECK(accept_helper("-9007199254740991"));
+                    // (2**53)-1
+                    CHECK(accept_helper("9007199254740991"));
+                }
+
+                SECTION("over the edge cases")  // issue #178 - Integer conversion to unsigned (incorrect handling of 64-bit integers)
+                {
+                    // While RFC8259, Section 6 specifies a preference for support
+                    // for ranges in range of IEEE 754-2008 binary64 (double precision)
+                    // this does not accommodate 64 bit integers without loss of accuracy.
+                    // As 64 bit integers are now widely used in software, it is desirable
+                    // to expand support to the full 64 bit (signed and unsigned) range
+                    // i.e. -(2**63) -> (2**64)-1.
+
+                    // -(2**63)    ** Note: compilers see negative literals as negated positive numbers (hence the -1))
+                    CHECK(accept_helper("-9223372036854775808"));
+                    // (2**63)-1
+                    CHECK(accept_helper("9223372036854775807"));
+                    // (2**64)-1
+                    CHECK(accept_helper("18446744073709551615"));
+                }
+            }
+
+            SECTION("floating-point")
+            {
+                SECTION("without exponent")
+                {
+                    CHECK(accept_helper("-128.5"));
+                    CHECK(accept_helper("0.999"));
+                    CHECK(accept_helper("128.5"));
+                    CHECK(accept_helper("-0.0"));
+                }
+
+                SECTION("with exponent")
+                {
+                    CHECK(accept_helper("-128.5E3"));
+                    CHECK(accept_helper("-128.5E-3"));
+                    CHECK(accept_helper("-0.0e1"));
+                    CHECK(accept_helper("-0.0E1"));
+                }
+            }
+
+            SECTION("overflow")
+            {
+                // overflows during parsing
+                CHECK(!accept_helper("1.18973e+4932"));
+            }
+
+            SECTION("invalid numbers")
+            {
+                CHECK(accept_helper("01") == false);
+                CHECK(accept_helper("--1") == false);
+                CHECK(accept_helper("1.") == false);
+                CHECK(accept_helper("1E") == false);
+                CHECK(accept_helper("1E-") == false);
+                CHECK(accept_helper("1.E1") == false);
+                CHECK(accept_helper("-1E") == false);
+                CHECK(accept_helper("-0E#") == false);
+                CHECK(accept_helper("-0E-#") == false);
+                CHECK(accept_helper("-0#") == false);
+                CHECK(accept_helper("-0.0:") == false);
+                CHECK(accept_helper("-0.0Z") == false);
+                CHECK(accept_helper("-0E123:") == false);
+                CHECK(accept_helper("-0e0-:") == false);
+                CHECK(accept_helper("-0e-:") == false);
+                CHECK(accept_helper("-0f") == false);
+
+                // numbers must not begin with "+"
+                CHECK(accept_helper("+1") == false);
+                CHECK(accept_helper("+0") == false);
+            }
+        }
+    }
+
+    SECTION("parse errors")
+    {
+        // unexpected end of number
+        CHECK_THROWS_WITH_AS(parser_helper("0."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '0.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("-"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("--"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '--'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("-0."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid number; expected digit after '.'; last read: '-0.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("-."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("-:"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid number; expected digit after '-'; last read: '-:'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("0.:"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected digit after '.'; last read: '0.:'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("e."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - invalid literal; last read: 'e'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1e."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1e/"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e/'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1e:"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1e:'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1E."),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E.'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1E/"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E/'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("1E:"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid number; expected '+', '-', or digit after exponent; last read: '1E:'", json::parse_error&);
+
+        // unexpected end of null
+        CHECK_THROWS_WITH_AS(parser_helper("n"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 'n'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("nu"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'nu'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("nul"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nul'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("nulk"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nulk'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("nulm"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'nulm'", json::parse_error&);
+
+        // unexpected end of true
+        CHECK_THROWS_WITH_AS(parser_helper("t"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 't'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("tr"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'tr'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("tru"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'tru'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("trud"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'trud'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("truf"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'truf'", json::parse_error&);
+
+        // unexpected end of false
+        CHECK_THROWS_WITH_AS(parser_helper("f"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 'f'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("fa"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid literal; last read: 'fa'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("fal"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid literal; last read: 'fal'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("fals"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'fals'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("falsd"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'falsd'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("falsf"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid literal; last read: 'falsf'", json::parse_error&);
+
+        // missing/unexpected end of array
+        CHECK_THROWS_WITH_AS(parser_helper("["),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("[1"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("[1,"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("[1,]"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("]"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal", json::parse_error&);
+
+        // missing/unexpected end of object
+        CHECK_THROWS_WITH_AS(parser_helper("{"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing object key - unexpected end of input; expected string literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("{\"foo\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing object separator - unexpected end of input; expected ':'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":}"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected '}'; expected '[', '{', or a literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("{\"foo\":1,}"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 10: syntax error while parsing object key - unexpected '}'; expected string literal", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("}"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - unexpected '}'; expected '[', '{', or a literal", json::parse_error&);
+
+        // missing/unexpected end of string
+        CHECK_THROWS_WITH_AS(parser_helper("\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid string: missing closing quote; last read: '\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: missing closing quote; last read: '\"\\\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u0\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u0\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u01\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u01\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u012\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u012\"'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u0"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u0'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u01"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u01'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(parser_helper("\"\\u012"),
+                             "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\u012'", json::parse_error&);
+
+        // invalid escapes
+        for (int c = 1; c < 128; ++c)
+        {
+            auto s = std::string("\"\\") + std::string(1, static_cast<char>(c)) + "\"";
+
+            switch (c)
+            {
+                // valid escapes
+                case ('"'):
+                case ('\\'):
+                case ('/'):
+                case ('b'):
+                case ('f'):
+                case ('n'):
+                case ('r'):
+                case ('t'):
+                {
+                    CHECK_NOTHROW(parser_helper(s));
+                    break;
+                }
+
+                // \u must be followed with four numbers, so we skip it here
+                case ('u'):
+                {
+                    break;
+                }
+
+                // any other combination of backslash and character is invalid
+                default:
+                {
+                    CHECK_THROWS_AS(parser_helper(s), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid string: forbidden character after backslash; last read: '\"\\" + std::string(1, static_cast<char>(c)) + "'");
+                    }
+                    break;
+                }
+            }
+        }
+
+        // invalid \uxxxx escapes
+        {
+            // check whether character is a valid hex character
+            const auto valid = [](int c)
+            {
+                switch (c)
+                {
+                    case ('0'):
+                    case ('1'):
+                    case ('2'):
+                    case ('3'):
+                    case ('4'):
+                    case ('5'):
+                    case ('6'):
+                    case ('7'):
+                    case ('8'):
+                    case ('9'):
+                    case ('a'):
+                    case ('b'):
+                    case ('c'):
+                    case ('d'):
+                    case ('e'):
+                    case ('f'):
+                    case ('A'):
+                    case ('B'):
+                    case ('C'):
+                    case ('D'):
+                    case ('E'):
+                    case ('F'):
+                    {
+                        return true;
+                    }
+
+                    default:
+                    {
+                        return false;
+                    }
+                }
+            };
+
+            for (int c = 1; c < 128; ++c)
+            {
+                std::string const s = "\"\\u";
+
+                // create a string with the iterated character at each position
+                auto s1 = s + "000" + std::string(1, static_cast<char>(c)) + "\"";
+                auto s2 = s + "00" + std::string(1, static_cast<char>(c)) + "0\"";
+                auto s3 = s + "0" + std::string(1, static_cast<char>(c)) + "00\"";
+                auto s4 = s + std::string(1, static_cast<char>(c)) + "000\"";
+
+                if (valid(c))
+                {
+                    CAPTURE(s1)
+                    CHECK_NOTHROW(parser_helper(s1));
+                    CAPTURE(s2)
+                    CHECK_NOTHROW(parser_helper(s2));
+                    CAPTURE(s3)
+                    CHECK_NOTHROW(parser_helper(s3));
+                    CAPTURE(s4)
+                    CHECK_NOTHROW(parser_helper(s4));
+                }
+                else
+                {
+                    CAPTURE(s1)
+                    CHECK_THROWS_AS(parser_helper(s1), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s1),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s1.substr(0, 7) + "'");
+                    }
+
+                    CAPTURE(s2)
+                    CHECK_THROWS_AS(parser_helper(s2), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s2),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 6: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s2.substr(0, 6) + "'");
+                    }
+
+                    CAPTURE(s3)
+                    CHECK_THROWS_AS(parser_helper(s3), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s3),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 5: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s3.substr(0, 5) + "'");
+                    }
+
+                    CAPTURE(s4)
+                    CHECK_THROWS_AS(parser_helper(s4), json::parse_error&);
+                    // only check error message if c is not a control character
+                    if (c > 0x1f)
+                    {
+                        CHECK_THROWS_WITH_STD_STR(parser_helper(s4),
+                                                  "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '" + s4.substr(0, 4) + "'");
+                    }
+                }
+            }
+        }
+
+        json _;
+
+        // missing part of a surrogate pair
+        CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\""), "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\"'", json::parse_error&);
+        // invalid surrogate pair
+        CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\uD80C\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\uD80C'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\u0000\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\u0000'", json::parse_error&);
+        CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD80C\\uFFFF\""),
+                             "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD80C\\uFFFF'", json::parse_error&);
+    }
+
+    SECTION("parse errors (accept)")
+    {
+        // unexpected end of number
+        CHECK(accept_helper("0.") == false);
+        CHECK(accept_helper("-") == false);
+        CHECK(accept_helper("--") == false);
+        CHECK(accept_helper("-0.") == false);
+        CHECK(accept_helper("-.") == false);
+        CHECK(accept_helper("-:") == false);
+        CHECK(accept_helper("0.:") == false);
+        CHECK(accept_helper("e.") == false);
+        CHECK(accept_helper("1e.") == false);
+        CHECK(accept_helper("1e/") == false);
+        CHECK(accept_helper("1e:") == false);
+        CHECK(accept_helper("1E.") == false);
+        CHECK(accept_helper("1E/") == false);
+        CHECK(accept_helper("1E:") == false);
+
+        // unexpected end of null
+        CHECK(accept_helper("n") == false);
+        CHECK(accept_helper("nu") == false);
+        CHECK(accept_helper("nul") == false);
+
+        // unexpected end of true
+        CHECK(accept_helper("t") == false);
+        CHECK(accept_helper("tr") == false);
+        CHECK(accept_helper("tru") == false);
+
+        // unexpected end of false
+        CHECK(accept_helper("f") == false);
+        CHECK(accept_helper("fa") == false);
+        CHECK(accept_helper("fal") == false);
+        CHECK(accept_helper("fals") == false);
+
+        // missing/unexpected end of array
+        CHECK(accept_helper("[") == false);
+        CHECK(accept_helper("[1") == false);
+        CHECK(accept_helper("[1,") == false);
+        CHECK(accept_helper("[1,]") == false);
+        CHECK(accept_helper("]") == false);
+
+        // missing/unexpected end of object
+        CHECK(accept_helper("{") == false);
+        CHECK(accept_helper("{\"foo\"") == false);
+        CHECK(accept_helper("{\"foo\":") == false);
+        CHECK(accept_helper("{\"foo\":}") == false);
+        CHECK(accept_helper("{\"foo\":1,}") == false);
+        CHECK(accept_helper("}") == false);
+
+        // missing/unexpected end of string
+        CHECK(accept_helper("\"") == false);
+        CHECK(accept_helper("\"\\\"") == false);
+        CHECK(accept_helper("\"\\u\"") == false);
+        CHECK(accept_helper("\"\\u0\"") == false);
+        CHECK(accept_helper("\"\\u01\"") == false);
+        CHECK(accept_helper("\"\\u012\"") == false);
+        CHECK(accept_helper("\"\\u") == false);
+        CHECK(accept_helper("\"\\u0") == false);
+        CHECK(accept_helper("\"\\u01") == false);
+        CHECK(accept_helper("\"\\u012") == false);
+
+        // unget of newline
+        CHECK(parser_helper("\n123\n") == 123);
+
+        // invalid escapes
+        for (int c = 1; c < 128; ++c)
+        {
+            auto s = std::string("\"\\") + std::string(1, static_cast<char>(c)) + "\"";
+
+            switch (c)
+            {
+                // valid escapes
+                case ('"'):
+                case ('\\'):
+                case ('/'):
+                case ('b'):
+                case ('f'):
+                case ('n'):
+                case ('r'):
+                case ('t'):
+                {
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept());
+                    break;
+                }
+
+                // \u must be followed with four numbers, so we skip it here
+                case ('u'):
+                {
+                    break;
+                }
+
+                // any other combination of backslash and character is invalid
+                default:
+                {
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s)).accept() == false);
+                    break;
+                }
+            }
+        }
+
+        // invalid \uxxxx escapes
+        {
+            // check whether character is a valid hex character
+            const auto valid = [](int c)
+            {
+                switch (c)
+                {
+                    case ('0'):
+                    case ('1'):
+                    case ('2'):
+                    case ('3'):
+                    case ('4'):
+                    case ('5'):
+                    case ('6'):
+                    case ('7'):
+                    case ('8'):
+                    case ('9'):
+                    case ('a'):
+                    case ('b'):
+                    case ('c'):
+                    case ('d'):
+                    case ('e'):
+                    case ('f'):
+                    case ('A'):
+                    case ('B'):
+                    case ('C'):
+                    case ('D'):
+                    case ('E'):
+                    case ('F'):
+                    {
+                        return true;
+                    }
+
+                    default:
+                    {
+                        return false;
+                    }
+                }
+            };
+
+            for (int c = 1; c < 128; ++c)
+            {
+                std::string const s = "\"\\u";
+
+                // create a string with the iterated character at each position
+                const auto s1 = s + "000" + std::string(1, static_cast<char>(c)) + "\"";
+                const auto s2 = s + "00" + std::string(1, static_cast<char>(c)) + "0\"";
+                const auto s3 = s + "0" + std::string(1, static_cast<char>(c)) + "00\"";
+                const auto s4 = s + std::string(1, static_cast<char>(c)) + "000\"";
+
+                if (valid(c))
+                {
+                    CAPTURE(s1)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s1)).accept());
+                    CAPTURE(s2)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s2)).accept());
+                    CAPTURE(s3)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s3)).accept());
+                    CAPTURE(s4)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s4)).accept());
+                }
+                else
+                {
+                    CAPTURE(s1)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s1)).accept() == false);
+
+                    CAPTURE(s2)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s2)).accept() == false);
+
+                    CAPTURE(s3)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s3)).accept() == false);
+
+                    CAPTURE(s4)
+                    CHECK(json::parser(nlohmann::detail::input_adapter(s4)).accept() == false);
+                }
+            }
+        }
+
+        // missing part of a surrogate pair
+        CHECK(accept_helper("\"\\uD80C\"") == false);
+        // invalid surrogate pair
+        CHECK(accept_helper("\"\\uD80C\\uD80C\"") == false);
+        CHECK(accept_helper("\"\\uD80C\\u0000\"") == false);
+        CHECK(accept_helper("\"\\uD80C\\uFFFF\"") == false);
+    }
+
+    SECTION("tests found by mutate++")
+    {
+        // test case to make sure no comma precedes the first key
+        CHECK_THROWS_WITH_AS(parser_helper("{,\"key\": false}"), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing object key - unexpected ','; expected string literal", json::parse_error&);
+        // test case to make sure an object is properly closed
+        CHECK_THROWS_WITH_AS(parser_helper("[{\"key\": false true]"), "[json.exception.parse_error.101] parse error at line 1, column 19: syntax error while parsing object - unexpected true literal; expected '}'", json::parse_error&);
+
+        // test case to make sure the callback is properly evaluated after reading a key
+        {
+            json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t event, json& /*unused*/) noexcept
+            {
+                return event != json::parse_event_t::key;
+            };
+
+            json x = json::parse("{\"key\": false}", cb);
+            CHECK(x == json::object());
+        }
+    }
+
+    SECTION("callback function")
+    {
+        const auto* s_object = R"(
+            {
+                "foo": 2,
+                "bar": {
+                    "baz": 1
+                }
+            }
+        )";
+
+        const auto* s_array = R"(
+            [1,2,[3,4,5],4,5]
+        )";
+
+        const auto* structured_array = R"(
+            [
+                1,
+                {
+                     "foo": "bar"
+                },
+                {
+                     "qux": "baz"
+                }
+            ]
+        )";
+
+        SECTION("filter nothing")
+        {
+            json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+            {
+                return true;
+            });
+
+            CHECK (j_object == json({{"foo", 2}, {"bar", {{"baz", 1}}}}));
+
+            json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+            {
+                return true;
+            });
+
+            CHECK (j_array == json({1, 2, {3, 4, 5}, 4, 5}));
+        }
+
+        SECTION("filter everything")
+        {
+            json const j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+            {
+                return false;
+            });
+
+            // the top-level object will be discarded, leaving a null
+            CHECK (j_object.is_null());
+
+            json const j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+            {
+                return false;
+            });
+
+            // the top-level array will be discarded, leaving a null
+            CHECK (j_array.is_null());
+        }
+
+        SECTION("filter specific element")
+        {
+            json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t event, const json & j) noexcept
+            {
+                // filter all number(2) elements
+                return event != json::parse_event_t::value || j != json(2);
+            });
+
+            CHECK (j_object == json({{"bar", {{"baz", 1}}}}));
+
+            json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t event, const json & j) noexcept
+            {
+                return event != json::parse_event_t::value || j != json(2);
+            });
+
+            CHECK (j_array == json({1, {3, 4, 5}, 4, 5}));
+        }
+
+        SECTION("filter object in array")
+        {
+            json j_filtered1 = json::parse(structured_array, [](int /*unused*/, json::parse_event_t e, const json & parsed)
+            {
+                return !(e == json::parse_event_t::object_end && parsed.contains("foo"));
+            });
+
+            // the specified object will be discarded, and removed.
+            CHECK (j_filtered1.size() == 2);
+            CHECK (j_filtered1 == json({1, {{"qux", "baz"}}}));
+
+            json j_filtered2 = json::parse(structured_array, [](int /*unused*/, json::parse_event_t e, const json& /*parsed*/) noexcept
+            {
+                return e != json::parse_event_t::object_end;
+            });
+
+            // removed all objects in array.
+            CHECK (j_filtered2.size() == 1);
+            CHECK (j_filtered2 == json({1}));
+        }
+
+        SECTION("filter specific events")
+        {
+            SECTION("first closing event")
+            {
+                {
+                    json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept
+                    {
+                        static bool first = true;
+                        if (e == json::parse_event_t::object_end && first)
+                        {
+                            first = false;
+                            return false;
+                        }
+
+                        return true;
+                    });
+
+                    // the first completed object will be discarded
+                    CHECK (j_object == json({{"foo", 2}}));
+                }
+
+                {
+                    json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept
+                    {
+                        static bool first = true;
+                        if (e == json::parse_event_t::array_end && first)
+                        {
+                            first = false;
+                            return false;
+                        }
+
+                        return true;
+                    });
+
+                    // the first completed array will be discarded
+                    CHECK (j_array == json({1, 2, 4, 5}));
+                }
+            }
+        }
+
+        SECTION("special cases")
+        {
+            // the following test cases cover the situation in which an empty
+            // object and array is discarded only after the closing character
+            // has been read
+
+            json j_empty_object = json::parse("{}", [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept
+            {
+                return e != json::parse_event_t::object_end;
+            });
+            CHECK(j_empty_object == json());
+
+            json j_empty_array = json::parse("[]", [](int /*unused*/, json::parse_event_t e, const json& /*unused*/) noexcept
+            {
+                return e != json::parse_event_t::array_end;
+            });
+            CHECK(j_empty_array == json());
+        }
+    }
+
+    SECTION("constructing from contiguous containers")
+    {
+        SECTION("from std::vector")
+        {
+            std::vector<uint8_t> v = {'t', 'r', 'u', 'e'};
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from std::array")
+        {
+            std::array<uint8_t, 5> v { {'t', 'r', 'u', 'e'} };
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from array")
+        {
+            uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from char literal")
+        {
+            CHECK(parser_helper("true") == json(true));
+        }
+
+        SECTION("from std::string")
+        {
+            std::string v = {'t', 'r', 'u', 'e'};
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from std::initializer_list")
+        {
+            std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'};
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+
+        SECTION("from std::valarray")
+        {
+            std::valarray<uint8_t> v = {'t', 'r', 'u', 'e'};
+            json j;
+            json::parser(nlohmann::detail::input_adapter(std::begin(v), std::end(v))).parse(true, j);
+            CHECK(j == json(true));
+        }
+    }
+
+    SECTION("improve test coverage")
+    {
+        SECTION("parser with callback")
+        {
+            json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t /*unused*/, json& /*unused*/) noexcept
+            {
+                return true;
+            };
+
+            CHECK(json::parse("{\"foo\": true:", cb, false).is_discarded());
+
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::parse("{\"foo\": true:", cb), "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing object - unexpected ':'; expected '}'", json::parse_error&);
+
+            CHECK_THROWS_WITH_AS(_ = json::parse("1.18973e+4932", cb), "[json.exception.out_of_range.406] number overflow parsing '1.18973e+4932'", json::out_of_range&);
+        }
+
+        SECTION("SAX parser")
+        {
+            SECTION("} without value")
+            {
+                SaxCountdown s(1);
+                CHECK(json::sax_parse("{}", &s) == false);
+            }
+
+            SECTION("} with value")
+            {
+                SaxCountdown s(3);
+                CHECK(json::sax_parse("{\"k1\": true}", &s) == false);
+            }
+
+            SECTION("second key")
+            {
+                SaxCountdown s(3);
+                CHECK(json::sax_parse("{\"k1\": true, \"k2\": false}", &s) == false);
+            }
+
+            SECTION("] without value")
+            {
+                SaxCountdown s(1);
+                CHECK(json::sax_parse("[]", &s) == false);
+            }
+
+            SECTION("] with value")
+            {
+                SaxCountdown s(2);
+                CHECK(json::sax_parse("[1]", &s) == false);
+            }
+
+            SECTION("float")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("3.14", &s) == false);
+            }
+
+            SECTION("false")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("false", &s) == false);
+            }
+
+            SECTION("null")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("null", &s) == false);
+            }
+
+            SECTION("true")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("true", &s) == false);
+            }
+
+            SECTION("unsigned")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("12", &s) == false);
+            }
+
+            SECTION("integer")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("-12", &s) == false);
+            }
+
+            SECTION("string")
+            {
+                SaxCountdown s(0);
+                CHECK(json::sax_parse("\"foo\"", &s) == false);
+            }
+        }
+    }
+
+    SECTION("error messages for comments")
+    {
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::parse("/a", nullptr, true, true), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid comment; expecting '/' or '*' after '/'; last read: '/a'", json::parse_error);
+        CHECK_THROWS_WITH_AS(_ = json::parse("/*", nullptr, true, true), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid comment; missing closing '*/'; last read: '/*<U+0000>'", json::parse_error);
+    }
+
+    // Macro for all test cases for start_pos and end_pos
+#define SETUP_TESTCASES() \
+    SECTION("with callback") \
+    { \
+        SECTION("filter nothing") \
+        { \
+            json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t /*unused*/, json& /*unused*/) noexcept \
+            { \
+                return true; \
+            }; \
+            validate_start_end_pos_for_nested_obj_helper(nested_type_json_str, root_type_json_str, expected, cb); \
+        } \
+        SECTION("filter element") \
+        { \
+            json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t event, json& j) noexcept \
+            { \
+                return (event != json::parse_event_t::key && event != json::parse_event_t::value) || j != json("a"); \
+            }; \
+            validate_start_end_pos_for_nested_obj_helper(nested_type_json_str, root_type_json_str, filteredExpected, cb); \
+        } \
+    } \
+    SECTION("without callback") \
+    { \
+        validate_start_end_pos_for_nested_obj_helper(nested_type_json_str, root_type_json_str, expected); \
+    }
+
+    SECTION("retrieve start position and end position")
+    {
+        SECTION("for object")
+        {
+            // Create an object with spaces to test the start and end positions. Spaces will not be included in the
+            // JSON object, however, the start and end positions should include the spaces from the input JSON string.
+            const std::string nested_type_json_str =  R"({    "a":       1,"b"      : "test1"})";
+            const std::string root_type_json_str =  R"({    "nested": )" + nested_type_json_str + R"(, "anotherValue": "test2"})";
+            auto expected = json({{"nested", {{"a", 1}, {"b", "test1"}}}, {"anotherValue", "test2"}});
+            auto filteredExpected = expected;
+            filteredExpected["nested"].erase("a");
+
+            SETUP_TESTCASES()
+        }
+
+        SECTION("for array")
+        {
+            const std::string nested_type_json_str =  R"(["a", "test", 45])";
+            const std::string root_type_json_str =  R"({   "nested": )" + nested_type_json_str + R"(, "anotherValue": "test" })";
+            auto expected = json({{"nested", {"a", "test", 45}}, {"anotherValue", "test"}});
+            auto filteredExpected = expected;
+            filteredExpected["nested"] = json({"test", 45});
+            SETUP_TESTCASES()
+        }
+
+        SECTION("for array with objects")
+        {
+            const std::string nested_type_json_str =  R"([{"a": 1, "b": "test"}, {"c": 2, "d": "test2"}])";
+            const std::string root_type_json_str =  R"({   "nested": )" + nested_type_json_str + R"(, "anotherValue": "test" })";
+            auto expected = json({{"nested", {{{"a", 1}, {"b", "test"}}, {{"c", 2}, {"d", "test2"}}}}, {"anotherValue", "test"}});
+            auto filteredExpected = expected;
+            filteredExpected["nested"][0].erase("a");
+            SETUP_TESTCASES()
+
+            auto j = json::parse(root_type_json_str);
+            auto nested_array = j["nested"];
+            const auto& nested_obj = nested_array[0];
+            CHECK(nested_type_json_str.substr(1, 21) == root_type_json_str.substr(nested_obj.start_pos(), nested_obj.end_pos() - nested_obj.start_pos()));
+            CHECK(nested_type_json_str.substr(24, 22) == root_type_json_str.substr(nested_array[1].start_pos(), nested_array[1].end_pos() - nested_array[1].start_pos()));
+        }
+
+        SECTION("for two levels of nesting objects")
+        {
+            const std::string nested_type_json_str =  R"({"nested2": {"b": "test"}})";
+            const std::string root_type_json_str =  R"({   "a": 2, "nested": )" + nested_type_json_str + R"(, "anotherValue": "test" })";
+            auto expected = json({{"a", 2}, {"nested", {{"nested2", {{"b", "test"}}}}}, {"anotherValue", "test"}});
+            auto filteredExpected = expected;
+            filteredExpected.erase("a");
+            SETUP_TESTCASES()
+
+            auto j = json::parse(root_type_json_str);
+            auto nested_obj = j["nested"]["nested2"];
+            CHECK(nested_type_json_str.substr(12, 13) == root_type_json_str.substr(nested_obj.start_pos(), nested_obj.end_pos() - nested_obj.start_pos()));
+        }
+
+        SECTION("for simple types")
+        {
+            SECTION("no nested")
+            {
+                SECTION("with callback")
+                {
+                    json::parser_callback_t const cb = [](int /*unused*/, json::parse_event_t /*unused*/, json& /*unused*/) noexcept
+                    {
+                        return true;
+                    };
+
+                    // 1. string type
+                    std::string json_str =  R"("test")";
+                    auto j = json::parse(json_str, cb);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, "test");
+
+                    // 2. number type
+                    json_str =  R"(1)";
+                    j = json::parse(json_str, cb);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, 1);
+
+                    // 3. boolean type
+                    json_str =  R"(true)";
+                    j = json::parse(json_str, cb);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, true);
+
+                    // 4. null type
+                    json_str =  R"(null)";
+                    j = json::parse(json_str, cb);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, nullptr);
+                }
+
+                SECTION("without callback")
+                {
+                    // 1. string type
+                    std::string json_str =  R"("test")";
+                    auto j = json::parse(json_str);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, "test");
+
+                    // 2. number type
+                    json_str =  R"(1)";
+                    j = json::parse(json_str);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, 1);
+
+                    json_str = R"(1.001239923)";
+                    j = json::parse(json_str);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, 1.001239923);
+
+                    json_str = R"(1.123812389000000)";
+                    j = json::parse(json_str);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, 1.123812389);
+
+                    // 3. boolean type
+                    json_str =  R"(true)";
+                    j = json::parse(json_str);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, true);
+
+                    json_str =  R"(false)";
+                    j = json::parse(json_str);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, false);
+
+                    // 4. null type
+                    json_str =  R"(null)";
+                    j = json::parse(json_str);
+                    validate_generated_json_and_start_end_pos_helper(json_str, j, nullptr);
+                }
+            }
+
+            SECTION("string type")
+            {
+                const std::string nested_type_json_str =  R"("test")";
+                const std::string root_type_json_str =  R"({ "a": 1,   "nested": )" + nested_type_json_str + R"(, "anotherValue": "test" })";
+                auto expected = json({{"nested", "test"}, {"anotherValue", "test"}, {"a", 1}});
+                auto filteredExpected = expected;
+                filteredExpected.erase("a");
+                SETUP_TESTCASES()
+            }
+
+            SECTION("number type")
+            {
+                const std::string nested_type_json_str =  R"(2)";
+                const std::string root_type_json_str =  R"({ "a": 1,   "nested": )" + nested_type_json_str + R"(, "anotherValue": "test" })";
+                auto expected = json({{"nested", 2}, {"anotherValue", "test"}, {"a", 1}});
+                auto filteredExpected = expected;
+                filteredExpected.erase("a");
+                SETUP_TESTCASES()
+            }
+
+            SECTION("boolean type")
+            {
+                const std::string nested_type_json_str =  R"(true)";
+                const std::string root_type_json_str =  R"({ "a": 1,   "nested": )" + nested_type_json_str + R"(, "anotherValue": "test" })";
+                auto expected = json({{"nested", true}, {"anotherValue", "test"}, {"a", 1}});
+                auto filteredExpected = expected;
+                filteredExpected.erase("a");
+                SETUP_TESTCASES()
+            }
+
+            SECTION("null type")
+            {
+                const std::string nested_type_json_str =  R"(null)";
+                const std::string root_type_json_str =  R"({ "a": 1,   "nested": )" + nested_type_json_str + R"(, "anotherValue": "test" })";
+                auto expected = json({{"nested", nullptr}, {"anotherValue", "test"}, {"a", 1}});
+                auto filteredExpected = expected;
+                filteredExpected.erase("a");
+                SETUP_TESTCASES()
+            }
+        }
+        SECTION("with leading whitespace and newlines around root JSON")
+        {
+            const std::string initial_whitespace = R"(
+                
+            )";
+            const std::string nested_type_json_str = R"({
+                "a": 1,
+                "nested": {
+                    "b": "test"
+                },
+                "anotherValue": "test"
+            })";
+            const std::string end_whitespace = R"(
+                
+            )";
+            const std::string root_type_json_str = initial_whitespace + nested_type_json_str + end_whitespace;
+
+            auto expected = json({{"a", 1}, {"nested", {{"b", "test"}}}, {"anotherValue", "test"}});
+
+            auto j = json::parse(root_type_json_str);
+
+            // 2. Check if the generated JSON is as expected
+            CHECK(j == expected);
+
+            // 3. Check if the start and end positions do not include the surrounding whitespace
+            CHECK(j.start_pos() == initial_whitespace.size());
+            CHECK(j.end_pos() == root_type_json_str.size() - end_whitespace.size());
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-comparison.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-comparison.cpp
new file mode 100644
index 00000000..84d3e181
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-comparison.cpp
@@ -0,0 +1,596 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+// cmake/test.cmake selects the C++ standard versions with which to build a
+// unit test based on the presence of JSON_HAS_CPP_<VERSION> macros.
+// When using macros that are only defined for particular versions of the standard
+// (e.g., JSON_HAS_FILESYSTEM for C++17 and up), please mention the corresponding
+// version macro in a comment close by, like this:
+// JSON_HAS_CPP_<VERSION> (do not remove; see note at top of file)
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#if JSON_HAS_THREE_WAY_COMPARISON
+// this can be replaced with the doctest stl extension header in version 2.5
+namespace doctest
+{
+template<> struct StringMaker<std::partial_ordering>
+{
+    static String convert(const std::partial_ordering& order)
+    {
+        if (order == std::partial_ordering::less)
+        {
+            return "std::partial_ordering::less";
+        }
+        if (order == std::partial_ordering::equivalent)
+        {
+            return "std::partial_ordering::equivalent";
+        }
+        if (order == std::partial_ordering::greater)
+        {
+            return "std::partial_ordering::greater";
+        }
+        if (order == std::partial_ordering::unordered)
+        {
+            return "std::partial_ordering::unordered";
+        }
+        return "{?}";
+    }
+};
+} // namespace doctest
+
+#endif
+
+namespace
+{
+// helper function to check std::less<json::value_t>
+// see https://en.cppreference.com/w/cpp/utility/functional/less
+template <typename A, typename B, typename U = std::less<json::value_t>>
+bool f(A a, B b, U u = U())
+{
+    return u(a, b);
+}
+} // namespace
+
+TEST_CASE("lexicographical comparison operators")
+{
+    constexpr auto f_ = false;
+    constexpr auto _t = true;
+    constexpr auto nan = std::numeric_limits<json::number_float_t>::quiet_NaN();
+#if JSON_HAS_THREE_WAY_COMPARISON
+    constexpr auto lt = std::partial_ordering::less;
+    constexpr auto gt = std::partial_ordering::greater;
+    constexpr auto eq = std::partial_ordering::equivalent;
+    constexpr auto un = std::partial_ordering::unordered;
+#endif
+
+#if JSON_HAS_THREE_WAY_COMPARISON
+    INFO("using 3-way comparison");
+#endif
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    INFO("using legacy comparison");
+#endif
+
+    //REQUIRE(std::numeric_limits<json::number_float_t>::has_quiet_NaN);
+    REQUIRE(std::isnan(nan));
+
+    SECTION("types")
+    {
+        std::vector<json::value_t> j_types =
+        {
+            json::value_t::null,
+            json::value_t::boolean,
+            json::value_t::number_integer,
+            json::value_t::number_unsigned,
+            json::value_t::number_float,
+            json::value_t::object,
+            json::value_t::array,
+            json::value_t::string,
+            json::value_t::binary,
+            json::value_t::discarded
+        };
+
+        std::vector<std::vector<bool>> expected_lt =
+        {
+            //0   1   2   3   4   5   6   7   8   9
+            {f_, _t, _t, _t, _t, _t, _t, _t, _t, f_}, //  0
+            {f_, f_, _t, _t, _t, _t, _t, _t, _t, f_}, //  1
+            {f_, f_, f_, f_, f_, _t, _t, _t, _t, f_}, //  2
+            {f_, f_, f_, f_, f_, _t, _t, _t, _t, f_}, //  3
+            {f_, f_, f_, f_, f_, _t, _t, _t, _t, f_}, //  4
+            {f_, f_, f_, f_, f_, f_, _t, _t, _t, f_}, //  5
+            {f_, f_, f_, f_, f_, f_, f_, _t, _t, f_}, //  6
+            {f_, f_, f_, f_, f_, f_, f_, f_, _t, f_}, //  7
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  8
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  9
+        };
+
+        SECTION("comparison: less")
+        {
+            REQUIRE(expected_lt.size() == j_types.size());
+            for (size_t i = 0; i < j_types.size(); ++i)
+            {
+                REQUIRE(expected_lt[i].size() == j_types.size());
+                for (size_t j = 0; j < j_types.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    // check precomputed values
+#if JSON_HAS_THREE_WAY_COMPARISON
+                    // JSON_HAS_CPP_20 (do not remove; see note at top of file)
+                    CHECK((j_types[i] < j_types[j]) == expected_lt[i][j]);
+#else
+                    CHECK(operator<(j_types[i], j_types[j]) == expected_lt[i][j]);
+#endif
+                    CHECK(f(j_types[i], j_types[j]) == expected_lt[i][j]);
+                }
+            }
+        }
+#if JSON_HAS_THREE_WAY_COMPARISON
+        // JSON_HAS_CPP_20 (do not remove; see note at top of file)
+        SECTION("comparison: 3-way")
+        {
+            std::vector<std::vector<std::partial_ordering>> expected =
+            {
+                //0   1   2   3   4   5   6   7   8   9
+                {eq, lt, lt, lt, lt, lt, lt, lt, lt, un}, //  0
+                {gt, eq, lt, lt, lt, lt, lt, lt, lt, un}, //  1
+                {gt, gt, eq, eq, eq, lt, lt, lt, lt, un}, //  2
+                {gt, gt, eq, eq, eq, lt, lt, lt, lt, un}, //  3
+                {gt, gt, eq, eq, eq, lt, lt, lt, lt, un}, //  4
+                {gt, gt, gt, gt, gt, eq, lt, lt, lt, un}, //  5
+                {gt, gt, gt, gt, gt, gt, eq, lt, lt, un}, //  6
+                {gt, gt, gt, gt, gt, gt, gt, eq, lt, un}, //  7
+                {gt, gt, gt, gt, gt, gt, gt, gt, eq, un}, //  8
+                {un, un, un, un, un, un, un, un, un, un}, //  9
+            };
+
+            // check expected partial_ordering against expected boolean
+            REQUIRE(expected.size() == expected_lt.size());
+            for (size_t i = 0; i < expected.size(); ++i)
+            {
+                REQUIRE(expected[i].size() == expected_lt[i].size());
+                for (size_t j = 0; j < expected[i].size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    CHECK(std::is_lt(expected[i][j]) == expected_lt[i][j]);
+                }
+            }
+
+            // check 3-way comparison against expected partial_ordering
+            REQUIRE(expected.size() == j_types.size());
+            for (size_t i = 0; i < j_types.size(); ++i)
+            {
+                REQUIRE(expected[i].size() == j_types.size());
+                for (size_t j = 0; j < j_types.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    CHECK((j_types[i] <=> j_types[j]) == expected[i][j]); // *NOPAD*
+                }
+            }
+        }
+#endif
+    }
+
+    SECTION("values")
+    {
+        json j_values =
+        {
+            nullptr, nullptr,                                              // 0 1
+            -17, 42,                                                       // 2 3
+            8u, 13u,                                                       // 4 5
+            3.14159, 23.42,                                                // 6 7
+            nan, nan,                                                      // 8 9
+            "foo", "bar",                                                  // 10 11
+            true, false,                                                   // 12 13
+            {1, 2, 3}, {"one", "two", "three"},                            // 14 15
+            {{"first", 1}, {"second", 2}}, {{"a", "A"}, {"b", {"B"}}},     // 16 17
+            json::binary({1, 2, 3}), json::binary({1, 2, 4}),              // 18 19
+            json(json::value_t::discarded), json(json::value_t::discarded) // 20 21
+        };
+
+        std::vector<std::vector<bool>> expected_eq =
+        {
+            //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
+            {_t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  0
+            {_t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  1
+            {f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  2
+            {f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  3
+            {f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  4
+            {f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  5
+            {f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  6
+            {f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  7
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  8
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  9
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 10
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 11
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 12
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, f_}, // 13
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_}, // 14
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_}, // 15
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_}, // 16
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_}, // 17
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_}, // 18
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_}, // 19
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 20
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 21
+        };
+
+        std::vector<std::vector<bool>> expected_lt =
+        {
+            //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
+            {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_}, //  0
+            {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_}, //  1
+            {f_, f_, f_, _t, _t, _t, _t, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  2
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  3
+            {f_, f_, f_, _t, f_, _t, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  4
+            {f_, f_, f_, _t, f_, f_, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  5
+            {f_, f_, f_, _t, _t, _t, f_, _t, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  6
+            {f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  7
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  8
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, //  9
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_}, // 10
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_}, // 11
+            {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, _t, _t, _t, _t, _t, _t, f_, f_}, // 12
+            {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, f_, _t, _t, _t, _t, _t, _t, f_, f_}, // 13
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, _t, f_, f_, _t, _t, f_, f_}, // 14
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_}, // 15
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, f_, f_, _t, _t, f_, f_}, // 16
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, _t, _t, _t, f_, _t, _t, f_, f_}, // 17
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, f_, f_}, // 18
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 19
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 20
+            {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 21
+        };
+
+        SECTION("compares unordered")
+        {
+            std::vector<std::vector<bool>> expected =
+            {
+                //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  0
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  1
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  2
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  3
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  4
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  5
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  6
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  7
+                {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  8
+                {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, //  9
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 10
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 11
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 12
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 13
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 14
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 15
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 16
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 17
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 18
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, _t, _t}, // 19
+                {_t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t}, // 20
+                {_t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t, _t}, // 21
+            };
+
+            // check if two values compare unordered as expected
+            REQUIRE(expected.size() == j_values.size());
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                REQUIRE(expected[i].size() == j_values.size());
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    CHECK(json::compares_unordered(j_values[i], j_values[j]) == expected[i][j]);
+                }
+            }
+        }
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+        SECTION("compares unordered (inverse)")
+        {
+            std::vector<std::vector<bool>> expected =
+            {
+                //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  0
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  1
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  2
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  3
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  4
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  5
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  6
+                {f_, f_, f_, f_, f_, f_, f_, f_, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  7
+                {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  8
+                {f_, f_, _t, _t, _t, _t, _t, _t, _t, _t, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, //  9
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 10
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 11
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 12
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 13
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 14
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 15
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 16
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 17
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 18
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 19
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 20
+                {f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_, f_}, // 21
+            };
+
+            // check that two values compare unordered as expected (with legacy-mode enabled)
+            REQUIRE(expected.size() == j_values.size());
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                REQUIRE(expected[i].size() == j_values.size());
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    CAPTURE(j_values[i])
+                    CAPTURE(j_values[j])
+                    CHECK(json::compares_unordered(j_values[i], j_values[j], true) == expected[i][j]);
+                }
+            }
+        }
+#endif
+
+        SECTION("comparison: equal")
+        {
+            // check that two values compare equal
+            REQUIRE(expected_eq.size() == j_values.size());
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                REQUIRE(expected_eq[i].size() == j_values.size());
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    CHECK((j_values[i] == j_values[j]) == expected_eq[i][j]);
+                }
+            }
+
+            // compare with null pointer
+            json j_null;
+            CHECK(j_null == nullptr);
+            CHECK(nullptr == j_null);
+        }
+
+        SECTION("comparison: not equal")
+        {
+            // check that two values compare unequal as expected
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+
+                    if (json::compares_unordered(j_values[i], j_values[j], true))
+                    {
+                        // if two values compare unordered,
+                        // check that the boolean comparison result is always false
+                        CHECK_FALSE(j_values[i] != j_values[j]);
+                    }
+                    else
+                    {
+                        // otherwise, check that they compare according to their definition
+                        // as the inverse of equal
+                        CHECK((j_values[i] != j_values[j]) == !(j_values[i] == j_values[j]));
+                    }
+                }
+            }
+
+            // compare with null pointer
+            const json j_null;
+            CHECK((j_null != nullptr) == false);
+            CHECK((nullptr != j_null) == false);
+            CHECK((j_null != nullptr) == !(j_null == nullptr));
+            CHECK((nullptr != j_null) == !(nullptr == j_null));
+        }
+
+        SECTION("comparison: less")
+        {
+            // check that two values compare less than as expected
+            REQUIRE(expected_lt.size() == j_values.size());
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                REQUIRE(expected_lt[i].size() == j_values.size());
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    CHECK((j_values[i] < j_values[j]) == expected_lt[i][j]);
+                }
+            }
+        }
+
+        SECTION("comparison: less than or equal equal")
+        {
+            // check that two values compare less than or equal as expected
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    if (json::compares_unordered(j_values[i], j_values[j], true))
+                    {
+                        // if two values compare unordered,
+                        // check that the boolean comparison result is always false
+                        CHECK_FALSE(j_values[i] <= j_values[j]);
+                    }
+                    else
+                    {
+                        // otherwise, check that they compare according to their definition
+                        // as the inverse of less than with the operand order reversed
+                        CHECK((j_values[i] <= j_values[j]) == !(j_values[j] < j_values[i]));
+                    }
+                }
+            }
+        }
+
+        SECTION("comparison: greater than")
+        {
+            // check that two values compare greater than as expected
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    if (json::compares_unordered(j_values[i], j_values[j]))
+                    {
+                        // if two values compare unordered,
+                        // check that the boolean comparison result is always false
+                        CHECK_FALSE(j_values[i] > j_values[j]);
+                    }
+                    else
+                    {
+                        // otherwise, check that they compare according to their definition
+                        // as the inverse of less than or equal which is defined as
+                        // the inverse of less than with the operand order reversed
+                        CHECK((j_values[i] > j_values[j]) == !(j_values[i] <= j_values[j]));
+                        CHECK((j_values[i] > j_values[j]) == !!(j_values[j] < j_values[i]));
+                    }
+                }
+            }
+        }
+
+        SECTION("comparison: greater than or equal")
+        {
+            // check that two values compare greater than or equal as expected
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    if (json::compares_unordered(j_values[i], j_values[j], true))
+                    {
+                        // if two values compare unordered,
+                        // check that the boolean result is always false
+                        CHECK_FALSE(j_values[i] >= j_values[j]);
+                    }
+                    else
+                    {
+                        // otherwise, check that they compare according to their definition
+                        // as the inverse of less than
+                        CHECK((j_values[i] >= j_values[j]) == !(j_values[i] < j_values[j]));
+                    }
+                }
+            }
+        }
+
+#if JSON_HAS_THREE_WAY_COMPARISON
+        // JSON_HAS_CPP_20 (do not remove; see note at top of file)
+        SECTION("comparison: 3-way")
+        {
+            std::vector<std::vector<std::partial_ordering>> expected =
+            {
+                //0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21
+                {eq, eq, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, un, un}, //  0
+                {eq, eq, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, un, un}, //  1
+                {gt, gt, eq, lt, lt, lt, lt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  2
+                {gt, gt, gt, eq, gt, gt, gt, gt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  3
+                {gt, gt, gt, lt, eq, lt, gt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  4
+                {gt, gt, gt, lt, gt, eq, gt, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  5
+                {gt, gt, gt, lt, lt, lt, eq, lt, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  6
+                {gt, gt, gt, lt, gt, gt, gt, eq, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  7
+                {gt, gt, un, un, un, un, un, un, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  8
+                {gt, gt, un, un, un, un, un, un, un, un, lt, lt, gt, gt, lt, lt, lt, lt, lt, lt, un, un}, //  9
+                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, gt, gt, gt, gt, gt, gt, gt, lt, lt, un, un}, // 10
+                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, eq, gt, gt, gt, gt, gt, gt, lt, lt, un, un}, // 11
+                {gt, gt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, eq, gt, lt, lt, lt, lt, lt, lt, un, un}, // 12
+                {gt, gt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, lt, eq, lt, lt, lt, lt, lt, lt, un, un}, // 13
+                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, eq, lt, gt, gt, lt, lt, un, un}, // 14
+                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, gt, eq, gt, gt, lt, lt, un, un}, // 15
+                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, lt, lt, eq, gt, lt, lt, un, un}, // 16
+                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, lt, lt, gt, gt, lt, lt, lt, eq, lt, lt, un, un}, // 17
+                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, lt, un, un}, // 18
+                {gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, gt, eq, un, un}, // 19
+                {un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un}, // 20
+                {un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un, un}, // 21
+            };
+
+            // check expected partial_ordering against expected booleans
+            REQUIRE(expected.size() == expected_eq.size());
+            REQUIRE(expected.size() == expected_lt.size());
+            for (size_t i = 0; i < expected.size(); ++i)
+            {
+                REQUIRE(expected[i].size() == expected_eq[i].size());
+                REQUIRE(expected[i].size() == expected_lt[i].size());
+                for (size_t j = 0; j < expected[i].size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    CHECK(std::is_eq(expected[i][j]) == expected_eq[i][j]);
+                    CHECK(std::is_lt(expected[i][j]) == expected_lt[i][j]);
+                    if (std::is_gt(expected[i][j]))
+                    {
+                        CHECK((!expected_eq[i][j] && !expected_lt[i][j]));
+                    }
+                }
+            }
+
+            // check that two values compare according to their expected ordering
+            REQUIRE(expected.size() == j_values.size());
+            for (size_t i = 0; i < j_values.size(); ++i)
+            {
+                REQUIRE(expected[i].size() == j_values.size());
+                for (size_t j = 0; j < j_values.size(); ++j)
+                {
+                    CAPTURE(i)
+                    CAPTURE(j)
+                    CHECK((j_values[i] <=> j_values[j]) == expected[i][j]); // *NOPAD*
+                }
+            }
+        }
+#endif
+    }
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    SECTION("parser callback regression")
+    {
+        SECTION("filter specific element")
+        {
+            const auto* s_object = R"(
+                {
+                    "foo": 2,
+                    "bar": {
+                        "baz": 1
+                    }
+                }
+            )";
+            const auto* s_array = R"(
+                [1,2,[3,4,5],4,5]
+            )";
+
+            json j_object = json::parse(s_object, [](int /*unused*/, json::parse_event_t /*unused*/, const json & j) noexcept
+            {
+                // filter all number(2) elements
+                return j != json(2);
+            });
+
+            CHECK (j_object == json({{"bar", {{"baz", 1}}}}));
+
+            json j_array = json::parse(s_array, [](int /*unused*/, json::parse_event_t /*unused*/, const json & j) noexcept
+            {
+                return j != json(2);
+            });
+
+            CHECK (j_array == json({1, {3, 4, 5}, 4, 5}));
+        }
+    }
+#endif
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-concepts.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-concepts.cpp
new file mode 100644
index 00000000..67d6a285
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-concepts.cpp
@@ -0,0 +1,149 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("concepts")
+{
+    SECTION("container requirements for json")
+    {
+        // X: container class: json
+        // T: type of objects: json
+        // a, b: values of type X: json
+
+        // TABLE 96 - Container Requirements
+        // X::value_type must return T
+        CHECK((std::is_same<json::value_type, json>::value));
+
+        // X::reference must return lvalue of T
+        CHECK((std::is_same<json::reference, json&>::value));
+
+        // X::const_reference must return const lvalue of T
+        CHECK((std::is_same<json::const_reference, const json&>::value));
+
+        // X::iterator must return iterator whose value_type is T
+        CHECK((std::is_same<json::iterator::value_type, json>::value));
+        // X::iterator must meet the forward iterator requirements
+        CHECK((std::is_base_of<std::forward_iterator_tag, typename std::iterator_traits<json::iterator>::iterator_category>::value));
+        // X::iterator must be convertible to X::const_iterator
+        CHECK((std::is_convertible<json::iterator, json::const_iterator>::value));
+
+        // X::const_iterator must return iterator whose value_type is T
+        CHECK((std::is_same<json::const_iterator::value_type, json>::value));
+        // X::const_iterator must meet the forward iterator requirements
+        CHECK((std::is_base_of<std::forward_iterator_tag, typename std::iterator_traits<json::const_iterator>::iterator_category>::value));
+
+        // X::difference_type must return a signed integer
+        CHECK((std::is_signed<json::difference_type>::value));
+        // X::difference_type must be identical to X::iterator::difference_type
+        CHECK((std::is_same<json::difference_type, json::iterator::difference_type>::value));
+        // X::difference_type must be identical to X::const_iterator::difference_type
+        CHECK((std::is_same<json::difference_type, json::const_iterator::difference_type>::value));
+
+        // X::size_type must return an unsigned integer
+        CHECK((std::is_unsigned<json::size_type>::value));
+        // X::size_type can represent any non-negative value of X::difference_type
+        CHECK(static_cast<json::size_type>((std::numeric_limits<json::difference_type>::max)()) <=
+              (std::numeric_limits<json::size_type>::max)());
+
+        // the expression "X u" has the post-condition "u.empty()"
+        {
+            const json u;
+            CHECK(u.empty());
+        }
+
+        // the expression "X()" has the post-condition "X().empty()"
+        CHECK(json().empty());
+    }
+
+    SECTION("class json")
+    {
+        SECTION("DefaultConstructible")
+        {
+            CHECK(std::is_nothrow_default_constructible<json>::value);
+        }
+
+        SECTION("MoveConstructible")
+        {
+            CHECK(std::is_move_constructible<json>::value);
+            CHECK(std::is_nothrow_move_constructible<json>::value);
+        }
+
+        SECTION("CopyConstructible")
+        {
+            CHECK(std::is_copy_constructible<json>::value);
+        }
+
+        SECTION("MoveAssignable")
+        {
+            CHECK(std::is_nothrow_move_assignable<json>::value);
+        }
+
+        SECTION("CopyAssignable")
+        {
+            CHECK(std::is_copy_assignable<json>::value);
+        }
+
+        SECTION("Destructible")
+        {
+            CHECK(std::is_nothrow_destructible<json>::value);
+        }
+
+        SECTION("StandardLayoutType")
+        {
+            CHECK(std::is_standard_layout<json>::value);
+        }
+    }
+
+    SECTION("class iterator")
+    {
+        SECTION("CopyConstructible")
+        {
+            CHECK(std::is_nothrow_copy_constructible<json::iterator>::value);
+            CHECK(std::is_nothrow_copy_constructible<json::const_iterator>::value);
+        }
+
+        SECTION("CopyAssignable")
+        {
+            // STL iterators used by json::iterator don't pass this test in Debug mode
+#if !defined(_MSC_VER) || (_ITERATOR_DEBUG_LEVEL == 0)
+            CHECK(std::is_nothrow_copy_assignable<json::iterator>::value);
+            CHECK(std::is_nothrow_copy_assignable<json::const_iterator>::value);
+#endif
+        }
+
+        SECTION("Destructible")
+        {
+            CHECK(std::is_nothrow_destructible<json::iterator>::value);
+            CHECK(std::is_nothrow_destructible<json::const_iterator>::value);
+        }
+
+        SECTION("Swappable")
+        {
+            {
+                json j {1, 2, 3};
+                json::iterator it1 = j.begin();
+                json::iterator it2 = j.end();
+                swap(it1, it2);
+                CHECK(it1 == j.end());
+                CHECK(it2 == j.begin());
+            }
+            {
+                json j {1, 2, 3};
+                json::const_iterator it1 = j.cbegin();
+                json::const_iterator it2 = j.cend();
+                swap(it1, it2);
+                CHECK(it1 == j.end());
+                CHECK(it2 == j.begin());
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-constructor1.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-constructor1.cpp
new file mode 100644
index 00000000..2a424715
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-constructor1.cpp
@@ -0,0 +1,1581 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <deque>
+#include <forward_list>
+#include <fstream>
+#include <list>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <valarray>
+
+TEST_CASE("constructors")
+{
+    SECTION("create an empty value with a given type")
+    {
+        SECTION("null")
+        {
+            auto const t = json::value_t::null;
+            json const j(t);
+            CHECK(j.type() == t);
+        }
+
+        SECTION("discarded")
+        {
+            auto const t = json::value_t::discarded;
+            json const j(t);
+            CHECK(j.type() == t);
+        }
+
+        SECTION("object")
+        {
+            auto const t = json::value_t::object;
+            json const j(t);
+            CHECK(j.type() == t);
+        }
+
+        SECTION("array")
+        {
+            auto const t = json::value_t::array;
+            json const j(t);
+            CHECK(j.type() == t);
+        }
+
+        SECTION("boolean")
+        {
+            auto const t = json::value_t::boolean;
+            json const j(t);
+            CHECK(j.type() == t);
+            CHECK(j == false);
+        }
+
+        SECTION("string")
+        {
+            auto const t = json::value_t::string;
+            json const j(t);
+            CHECK(j.type() == t);
+            CHECK(j == "");
+        }
+
+        SECTION("number_integer")
+        {
+            auto const t = json::value_t::number_integer;
+            json const j(t);
+            CHECK(j.type() == t);
+            CHECK(j == 0);
+        }
+
+        SECTION("number_unsigned")
+        {
+            auto const t = json::value_t::number_unsigned;
+            json const j(t);
+            CHECK(j.type() == t);
+            CHECK(j == 0);
+        }
+
+        SECTION("number_float")
+        {
+            auto const t = json::value_t::number_float;
+            json const j(t);
+            CHECK(j.type() == t);
+            CHECK(j == 0.0);
+        }
+
+        SECTION("binary")
+        {
+            auto const t = json::value_t::binary;
+            json const j(t);
+            CHECK(j.type() == t);
+            CHECK(j == json::binary({}));
+        }
+    }
+
+    SECTION("create a null object (implicitly)")
+    {
+        SECTION("no parameter")
+        {
+            json const j{};
+            CHECK(j.type() == json::value_t::null);
+        }
+    }
+
+    SECTION("create a null object (explicitly)")
+    {
+        SECTION("parameter")
+        {
+            json const j(nullptr);
+            CHECK(j.type() == json::value_t::null);
+        }
+    }
+
+    SECTION("create an object (explicit)")
+    {
+        SECTION("empty object")
+        {
+            json::object_t const o{};
+            json const j(o);
+            CHECK(j.type() == json::value_t::object);
+        }
+
+        SECTION("filled object")
+        {
+            json::object_t const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            json const j(o);
+            CHECK(j.type() == json::value_t::object);
+        }
+    }
+
+    SECTION("create an object (implicit)")
+    {
+        // reference object
+        json::object_t const o_reference {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+        json const j_reference(o_reference);
+
+        SECTION("std::map<json::string_t, json>")
+        {
+            std::map<json::string_t, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            json const j(o);
+            CHECK(j.type() == json::value_t::object);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("std::map<std::string, std::string> #600")
+        {
+            const std::map<std::string, std::string> m
+            {
+                {"a", "b"},
+                {"c", "d"},
+                {"e", "f"},
+            };
+
+            json const j(m);
+            CHECK((j.get<decltype(m)>() == m));
+        }
+
+        SECTION("std::map<const char*, json>")
+        {
+            std::map<const char*, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            json const j(o);
+            CHECK(j.type() == json::value_t::object);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("std::multimap<json::string_t, json>")
+        {
+            std::multimap<json::string_t, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            json const j(o);
+            CHECK(j.type() == json::value_t::object);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("std::unordered_map<json::string_t, json>")
+        {
+            std::unordered_map<json::string_t, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            json const j(o);
+            CHECK(j.type() == json::value_t::object);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("std::unordered_multimap<json::string_t, json>")
+        {
+            std::unordered_multimap<json::string_t, json> const o {{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}};
+            json const j(o);
+            CHECK(j.type() == json::value_t::object);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("associative container literal")
+        {
+            json const j({{"a", json(1)}, {"b", json(1u)}, {"c", json(2.2)}, {"d", json(false)}, {"e", json("string")}, {"f", json()}});
+            CHECK(j.type() == json::value_t::object);
+            CHECK(j == j_reference);
+        }
+    }
+
+    SECTION("create an array (explicit)")
+    {
+        SECTION("empty array")
+        {
+            json::array_t const a{};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+        }
+
+        SECTION("filled array")
+        {
+            json::array_t const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+        }
+    }
+
+    SECTION("create an array (implicit)")
+    {
+        // reference array
+        json::array_t const a_reference {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+        json const j_reference(a_reference);
+
+        SECTION("std::list<json>")
+        {
+            std::list<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("std::pair")
+        {
+            std::pair<float, std::string> const p{1.0f, "string"};
+            json const j(p);
+
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j.get<decltype(p)>() == p);
+            REQUIRE(j.size() == 2);
+            CHECK(j[0] == std::get<0>(p));
+            CHECK(j[1] == std::get<1>(p));
+        }
+
+        SECTION("std::pair with discarded values")
+        {
+            json const j{1, 2.0, "string"};
+
+            const auto p = j.get<std::pair<int, float>>();
+            CHECK(p.first == j[0]);
+            CHECK(p.second == j[1]);
+        }
+
+        SECTION("std::tuple")
+        {
+            const auto t = std::make_tuple(1.0, std::string{"string"}, 42, std::vector<int> {0, 1});
+            json const j(t);
+
+            CHECK(j.type() == json::value_t::array);
+            REQUIRE(j.size() == 4);
+            CHECK(j.get<decltype(t)>() == t);
+            CHECK(j[0] == std::get<0>(t));
+            CHECK(j[1] == std::get<1>(t));
+            CHECK(j[2] == std::get<2>(t));
+            CHECK(j[3][0] == 0);
+            CHECK(j[3][1] == 1);
+        }
+
+        SECTION("std::tuple with discarded values")
+        {
+            json const j{1, 2.0, "string", 42};
+
+            const auto t = j.get<std::tuple<int, float, std::string>>();
+            CHECK(std::get<0>(t) == j[0]);
+            CHECK(std::get<1>(t) == j[1]);
+            // CHECK(std::get<2>(t) == j[2]); // commented out due to CI issue, see https://github.com/nlohmann/json/pull/3985 and https://github.com/nlohmann/json/issues/4025
+        }
+
+        SECTION("std::pair/tuple/array failures")
+        {
+            json const j{1};
+
+            CHECK_THROWS_WITH_AS((j.get<std::pair<int, int>>()), "[json.exception.out_of_range.401] array index 1 is out of range", json::out_of_range&);
+            CHECK_THROWS_WITH_AS((j.get<std::tuple<int, int>>()), "[json.exception.out_of_range.401] array index 1 is out of range", json::out_of_range&);
+            CHECK_THROWS_WITH_AS((j.get<std::array<int, 3>>()), "[json.exception.out_of_range.401] array index 1 is out of range", json::out_of_range&);
+        }
+
+        SECTION("std::forward_list<json>")
+        {
+            std::forward_list<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("std::array<json, 6>")
+        {
+            std::array<json, 6> const a {{json(1), json(1u), json(2.2), json(false), json("string"), json()}};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j == j_reference);
+
+            const auto a2 = j.get<std::array<json, 6>>();
+            CHECK(a2 == a);
+        }
+
+        SECTION("std::valarray<int>")
+        {
+            std::valarray<int> const va = {1, 2, 3, 4, 5};
+            json const j(va);
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j == json({1, 2, 3, 4, 5}));
+
+            auto jva = j.get<std::valarray<int>>();
+            CHECK(jva.size() == va.size());
+            for (size_t i = 0; i < jva.size(); ++i)
+            {
+                CHECK(va[i] == jva[i]);
+            }
+        }
+
+        SECTION("std::valarray<double>")
+        {
+            std::valarray<double> const va = {1.2, 2.3, 3.4, 4.5, 5.6};
+            json const j(va);
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j == json({1.2, 2.3, 3.4, 4.5, 5.6}));
+
+            auto jva = j.get<std::valarray<double>>();
+            CHECK(jva.size() == va.size());
+            for (size_t i = 0; i < jva.size(); ++i)
+            {
+                CHECK(va[i] == jva[i]);
+            }
+        }
+
+        SECTION("std::vector<json>")
+        {
+            std::vector<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("std::deque<json>")
+        {
+            std::deque<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("std::set<json>")
+        {
+            std::set<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+            // we cannot really check for equality here
+        }
+
+        SECTION("std::unordered_set<json>")
+        {
+            std::unordered_set<json> const a {json(1), json(1u), json(2.2), json(false), json("string"), json()};
+            json const j(a);
+            CHECK(j.type() == json::value_t::array);
+            // we cannot really check for equality here
+        }
+
+        SECTION("sequence container literal")
+        {
+            json const j({json(1), json(1u), json(2.2), json(false), json("string"), json()});
+            CHECK(j.type() == json::value_t::array);
+            CHECK(j == j_reference);
+        }
+    }
+
+    SECTION("create a string (explicit)")
+    {
+        SECTION("empty string")
+        {
+            json::string_t const s{};
+            json const j(s);
+            CHECK(j.type() == json::value_t::string);
+        }
+
+        SECTION("filled string")
+        {
+            json::string_t const s {"Hello world"};
+            json const j(s);
+            CHECK(j.type() == json::value_t::string);
+        }
+    }
+
+    SECTION("create a string (implicit)")
+    {
+        // reference string
+        json::string_t const s_reference {"Hello world"};
+        json const j_reference(s_reference);
+
+        SECTION("std::string")
+        {
+            std::string const s {"Hello world"};
+            json const j(s);
+            CHECK(j.type() == json::value_t::string);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("char[]")
+        {
+            char const s[] {"Hello world"}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            json const j(s);
+            CHECK(j.type() == json::value_t::string);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("const char*")
+        {
+            const char* s {"Hello world"};
+            json const j(s);
+            CHECK(j.type() == json::value_t::string);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("string literal")
+        {
+            json const j("Hello world");
+            CHECK(j.type() == json::value_t::string);
+            CHECK(j == j_reference);
+        }
+    }
+
+    SECTION("create a boolean (explicit)")
+    {
+        SECTION("empty boolean")
+        {
+            json::boolean_t const b{};
+            json const j(b);
+            CHECK(j.type() == json::value_t::boolean);
+        }
+
+        SECTION("filled boolean (true)")
+        {
+            json const j(true);
+            CHECK(j.type() == json::value_t::boolean);
+        }
+
+        SECTION("filled boolean (false)")
+        {
+            json const j(false);
+            CHECK(j.type() == json::value_t::boolean);
+        }
+
+        SECTION("from std::vector<bool>::reference")
+        {
+            std::vector<bool> v{true};
+            json const j(v[0]);
+            CHECK(std::is_same<decltype(v[0]), std::vector<bool>::reference>::value);
+            CHECK(j.type() == json::value_t::boolean);
+        }
+
+        SECTION("from std::vector<bool>::const_reference")
+        {
+            const std::vector<bool> v{true};
+            json const j(v[0]);
+            CHECK(std::is_same<decltype(v[0]), std::vector<bool>::const_reference>::value);
+            CHECK(j.type() == json::value_t::boolean);
+        }
+    }
+
+    SECTION("create a binary (explicit)")
+    {
+        SECTION("empty binary")
+        {
+            json::binary_t const b{};
+            json const j(b);
+            CHECK(j.type() == json::value_t::binary);
+        }
+
+        SECTION("filled binary")
+        {
+            json::binary_t const b({1, 2, 3});
+            json const j(b);
+            CHECK(j.type() == json::value_t::binary);
+        }
+    }
+
+    SECTION("create an integer number (explicit)")
+    {
+        SECTION("uninitialized value")
+        {
+            json::number_integer_t const n{};
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+        }
+
+        SECTION("initialized value")
+        {
+            json::number_integer_t const n(42);
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+        }
+    }
+
+    SECTION("create an integer number (implicit)")
+    {
+        // reference objects
+        json::number_integer_t const n_reference = 42;
+        json const j_reference(n_reference);
+        json::number_unsigned_t const n_unsigned_reference = 42;
+        json const j_unsigned_reference(n_unsigned_reference);
+
+        SECTION("short")
+        {
+            short const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("unsigned short")
+        {
+            unsigned short const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("int")
+        {
+            int const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("unsigned int")
+        {
+            unsigned int const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("long")
+        {
+            long const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("unsigned long")
+        {
+            unsigned long const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("long long")
+        {
+            long long const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("unsigned long long")
+        {
+            unsigned long long const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("int8_t")
+        {
+            int8_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int16_t")
+        {
+            int16_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int32_t")
+        {
+            int32_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int64_t")
+        {
+            int64_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int_fast8_t")
+        {
+            int_fast8_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int_fast16_t")
+        {
+            int_fast16_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int_fast32_t")
+        {
+            int_fast32_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int_fast64_t")
+        {
+            int_fast64_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int_least8_t")
+        {
+            int_least8_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int_least16_t")
+        {
+            int_least16_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int_least32_t")
+        {
+            int_least32_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("int_least64_t")
+        {
+            int_least64_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("uint8_t")
+        {
+            uint8_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint16_t")
+        {
+            uint16_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint32_t")
+        {
+            uint32_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint64_t")
+        {
+            uint64_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint_fast8_t")
+        {
+            uint_fast8_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint_fast16_t")
+        {
+            uint_fast16_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint_fast32_t")
+        {
+            uint_fast32_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint_fast64_t")
+        {
+            uint_fast64_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint_least8_t")
+        {
+            uint_least8_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint_least16_t")
+        {
+            uint_least16_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint_least32_t")
+        {
+            uint_least32_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("uint_least64_t")
+        {
+            uint_least64_t const n = 42;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("integer literal without suffix")
+        {
+            json const j(42);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("integer literal with u suffix")
+        {
+            json j(42u);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("integer literal with l suffix")
+        {
+            json const j(42L);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("integer literal with ul suffix")
+        {
+            json j(42ul);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+
+        SECTION("integer literal with ll suffix")
+        {
+            json const j(42LL);
+            CHECK(j.type() == json::value_t::number_integer);
+            CHECK(j == j_reference);
+        }
+
+        SECTION("integer literal with ull suffix")
+        {
+            json j(42ull);
+            CHECK(j.type() == json::value_t::number_unsigned);
+            CHECK(j == j_unsigned_reference);
+        }
+    }
+
+    SECTION("create a floating-point number (explicit)")
+    {
+        SECTION("uninitialized value")
+        {
+            json::number_float_t const n{};
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_float);
+        }
+
+        SECTION("initialized value")
+        {
+            json::number_float_t const n(42.23);
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_float);
+        }
+
+        SECTION("NaN")
+        {
+            // NaN is stored properly, but serialized to null
+            json::number_float_t const n(std::numeric_limits<json::number_float_t>::quiet_NaN());
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_float);
+
+            // check round trip of NaN
+            json::number_float_t const d{j};
+            CHECK((std::isnan(d) && std::isnan(n)) == true);
+
+            // check that NaN is serialized to null
+            CHECK(j.dump() == "null");
+        }
+
+        SECTION("infinity")
+        {
+            // infinity is stored properly, but serialized to null
+            json::number_float_t const n(std::numeric_limits<json::number_float_t>::infinity());
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_float);
+
+            // check round trip of infinity
+            json::number_float_t const d{j};
+            CHECK(d == n);
+
+            // check that inf is serialized to null
+            CHECK(j.dump() == "null");
+        }
+    }
+
+    SECTION("create a floating-point number (implicit)")
+    {
+        // reference object
+        json::number_float_t const n_reference = 42.23;
+        json const j_reference(n_reference);
+
+        SECTION("float")
+        {
+            float const n = 42.23f;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_float);
+            CHECK(j.m_data.m_value.number_float == Approx(j_reference.m_data.m_value.number_float));
+        }
+
+        SECTION("double")
+        {
+            double const n = 42.23;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_float);
+            CHECK(j.m_data.m_value.number_float == Approx(j_reference.m_data.m_value.number_float));
+        }
+
+        SECTION("long double")
+        {
+            long double const n = 42.23L;
+            json const j(n);
+            CHECK(j.type() == json::value_t::number_float);
+            CHECK(j.m_data.m_value.number_float == Approx(j_reference.m_data.m_value.number_float));
+        }
+
+        SECTION("floating-point literal without suffix")
+        {
+            json const j(42.23);
+            CHECK(j.type() == json::value_t::number_float);
+            CHECK(j.m_data.m_value.number_float == Approx(j_reference.m_data.m_value.number_float));
+        }
+
+        SECTION("integer literal with f suffix")
+        {
+            json const j(42.23f);
+            CHECK(j.type() == json::value_t::number_float);
+            CHECK(j.m_data.m_value.number_float == Approx(j_reference.m_data.m_value.number_float));
+        }
+
+        SECTION("integer literal with l suffix")
+        {
+            json const j(42.23L);
+            CHECK(j.type() == json::value_t::number_float);
+            CHECK(j.m_data.m_value.number_float == Approx(j_reference.m_data.m_value.number_float));
+        }
+    }
+
+    SECTION("create a container (array or object) from an initializer list")
+    {
+        SECTION("empty initializer list")
+        {
+            SECTION("explicit")
+            {
+                json const j(json::initializer_list_t {});
+                CHECK(j.type() == json::value_t::object);
+            }
+
+            SECTION("implicit")
+            {
+                json const j {};
+                CHECK(j.type() == json::value_t::null);
+            }
+        }
+
+        SECTION("one element")
+        {
+            SECTION("array")
+            {
+                SECTION("explicit")
+                {
+                    json const j(json::initializer_list_t {json(json::array_t())});
+                    CHECK(j.type() == json::value_t::array);
+                }
+
+                SECTION("implicit")
+                {
+                    json const j {json::array_t()};
+                    CHECK(j.type() == json::value_t::array);
+                }
+            }
+
+            SECTION("object")
+            {
+                SECTION("explicit")
+                {
+                    json const j(json::initializer_list_t {json(json::object_t())});
+                    CHECK(j.type() == json::value_t::array);
+                }
+
+                SECTION("implicit")
+                {
+                    json const j {json::object_t()};
+                    CHECK(j.type() == json::value_t::array);
+                }
+            }
+
+            SECTION("string")
+            {
+                SECTION("explicit")
+                {
+                    json const j(json::initializer_list_t {json("Hello world")});
+                    CHECK(j.type() == json::value_t::array);
+                }
+
+                SECTION("implicit")
+                {
+                    json const j {"Hello world"};
+                    CHECK(j.type() == json::value_t::array);
+                }
+            }
+
+            SECTION("boolean")
+            {
+                SECTION("explicit")
+                {
+                    json const j(json::initializer_list_t {json(true)});
+                    CHECK(j.type() == json::value_t::array);
+                }
+
+                SECTION("implicit")
+                {
+                    json const j {true};
+                    CHECK(j.type() == json::value_t::array);
+                }
+            }
+
+            SECTION("number (integer)")
+            {
+                SECTION("explicit")
+                {
+                    json const j(json::initializer_list_t {json(1)});
+                    CHECK(j.type() == json::value_t::array);
+                }
+
+                SECTION("implicit")
+                {
+                    json const j {1};
+                    CHECK(j.type() == json::value_t::array);
+                }
+            }
+
+            SECTION("number (unsigned)")
+            {
+                SECTION("explicit")
+                {
+                    json const j(json::initializer_list_t {json(1u)});
+                    CHECK(j.type() == json::value_t::array);
+                }
+
+                SECTION("implicit")
+                {
+                    json const j {1u};
+                    CHECK(j.type() == json::value_t::array);
+                }
+            }
+
+            SECTION("number (floating-point)")
+            {
+                SECTION("explicit")
+                {
+                    json const j(json::initializer_list_t {json(42.23)});
+                    CHECK(j.type() == json::value_t::array);
+                }
+
+                SECTION("implicit")
+                {
+                    json const j {42.23};
+                    CHECK(j.type() == json::value_t::array);
+                }
+            }
+        }
+
+        SECTION("more elements")
+        {
+            SECTION("explicit")
+            {
+                json const j(json::initializer_list_t {1, 1u, 42.23, true, nullptr, json::object_t(), json::array_t()});
+                CHECK(j.type() == json::value_t::array);
+            }
+
+            SECTION("implicit")
+            {
+                json const j {1, 1u, 42.23, true, nullptr, json::object_t(), json::array_t()};
+                CHECK(j.type() == json::value_t::array);
+            }
+        }
+
+        SECTION("implicit type deduction")
+        {
+            SECTION("object")
+            {
+                json const j { {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false} };
+                CHECK(j.type() == json::value_t::object);
+            }
+
+            SECTION("array")
+            {
+                json const j { {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false}, 13 };
+                CHECK(j.type() == json::value_t::array);
+            }
+        }
+
+        SECTION("explicit type deduction")
+        {
+            SECTION("empty object")
+            {
+                json const j = json::object();
+                CHECK(j.type() == json::value_t::object);
+            }
+
+            SECTION("object")
+            {
+                json const j = json::object({ {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false} });
+                CHECK(j.type() == json::value_t::object);
+            }
+
+            SECTION("object with error")
+            {
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::object({ {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false}, 13 }), "[json.exception.type_error.301] cannot create object from initializer list", json::type_error&);
+            }
+
+            SECTION("empty array")
+            {
+                json const j = json::array();
+                CHECK(j.type() == json::value_t::array);
+            }
+
+            SECTION("array")
+            {
+                json const j = json::array({ {"one", 1}, {"two", 1u}, {"three", 2.2}, {"four", false} });
+                CHECK(j.type() == json::value_t::array);
+            }
+        }
+
+        SECTION("move from initializer_list")
+        {
+            SECTION("string")
+            {
+                SECTION("constructor with implicit types (array)")
+                {
+                    // This should break through any short string optimization in std::string
+                    std::string source(1024, '!');
+                    const auto* source_addr = source.data();
+                    json j = {std::move(source)};
+                    const auto* target_addr = j[0].get_ref<std::string const&>().data();
+                    const bool success = (target_addr == source_addr);
+                    CHECK(success);
+                }
+
+                SECTION("constructor with implicit types (object)")
+                {
+                    // This should break through any short string optimization in std::string
+                    std::string source(1024, '!');
+                    const auto* source_addr = source.data();
+                    json j = {{"key", std::move(source)}};
+                    const auto* target_addr = j["key"].get_ref<std::string const&>().data();
+                    const bool success = (target_addr == source_addr);
+                    CHECK(success);
+                }
+
+                SECTION("constructor with implicit types (object key)")
+                {
+                    // This should break through any short string optimization in std::string
+                    std::string source(1024, '!');
+                    const auto* source_addr = source.data();
+                    json j = {{std::move(source), 42}};
+                    const auto* target_addr = j.get_ref<json::object_t&>().begin()->first.data();
+                    const bool success = (target_addr == source_addr);
+                    CHECK(success);
+                }
+            }
+
+            SECTION("array")
+            {
+                SECTION("constructor with implicit types (array)")
+                {
+                    json::array_t source = {1, 2, 3};
+                    const auto* source_addr = source.data();
+                    json j {std::move(source)};
+                    const auto* target_addr = j[0].get_ref<json::array_t const&>().data();
+                    const bool success = (target_addr == source_addr);
+                    CHECK(success);
+                }
+
+                SECTION("constructor with implicit types (object)")
+                {
+                    json::array_t source = {1, 2, 3};
+                    const auto* source_addr = source.data();
+                    json const j {{"key", std::move(source)}};
+                    const auto* target_addr = j["key"].get_ref<json::array_t const&>().data();
+                    const bool success = (target_addr == source_addr);
+                    CHECK(success);
+                }
+
+                SECTION("assignment with implicit types (array)")
+                {
+                    json::array_t source = {1, 2, 3};
+                    const auto* source_addr = source.data();
+                    json j = {std::move(source)};
+                    const auto* target_addr = j[0].get_ref<json::array_t const&>().data();
+                    const bool success = (target_addr == source_addr);
+                    CHECK(success);
+                }
+
+                SECTION("assignment with implicit types (object)")
+                {
+                    json::array_t source = {1, 2, 3};
+                    const auto* source_addr = source.data();
+                    json j = {{"key", std::move(source)}};
+                    const auto* target_addr = j["key"].get_ref<json::array_t const&>().data();
+                    const bool success = (target_addr == source_addr);
+                    CHECK(success);
+                }
+            }
+
+            SECTION("object")
+            {
+                SECTION("constructor with implicit types (array)")
+                {
+                    json::object_t source = {{"hello", "world"}};
+                    const json* source_addr = &source.at("hello");
+                    json j {std::move(source)};
+                    CHECK(&(j[0].get_ref<json::object_t const&>().at("hello")) == source_addr);
+                }
+
+                SECTION("constructor with implicit types (object)")
+                {
+                    json::object_t source = {{"hello", "world"}};
+                    const json* source_addr = &source.at("hello");
+                    json j {{"key", std::move(source)}};
+                    CHECK(&(j["key"].get_ref<json::object_t const&>().at("hello")) == source_addr);
+                }
+
+                SECTION("assignment with implicit types (array)")
+                {
+                    json::object_t source = {{"hello", "world"}};
+                    const json* source_addr = &source.at("hello");
+                    json j = {std::move(source)};
+                    CHECK(&(j[0].get_ref<json::object_t const&>().at("hello")) == source_addr);
+                }
+
+                SECTION("assignment with implicit types (object)")
+                {
+                    json::object_t source = {{"hello", "world"}};
+                    const json* source_addr = &source.at("hello");
+                    json j = {{"key", std::move(source)}};
+                    CHECK(&(j["key"].get_ref<json::object_t const&>().at("hello")) == source_addr);
+                }
+            }
+
+            SECTION("json")
+            {
+                SECTION("constructor with implicit types (array)")
+                {
+                    json source {1, 2, 3};
+                    const json* source_addr = &source[0];
+                    json j {std::move(source), {}};
+                    CHECK(&j[0][0] == source_addr);
+                }
+
+                SECTION("constructor with implicit types (object)")
+                {
+                    json source {1, 2, 3};
+                    const json* source_addr = &source[0];
+                    json j {{"key", std::move(source)}};
+                    CHECK(&j["key"][0] == source_addr);
+                }
+
+                SECTION("assignment with implicit types (array)")
+                {
+                    json source {1, 2, 3};
+                    const json* source_addr = &source[0];
+                    json j = {std::move(source), {}};
+                    CHECK(&j[0][0] == source_addr);
+                }
+
+                SECTION("assignment with implicit types (object)")
+                {
+                    json source {1, 2, 3};
+                    const json* source_addr = &source[0];
+                    json j = {{"key", std::move(source)}};
+                    CHECK(&j["key"][0] == source_addr);
+                }
+            }
+
+        }
+    }
+
+    SECTION("create an array of n copies of a given value")
+    {
+        SECTION("cnt = 0")
+        {
+            json const v = {1, "foo", 34.23, {1, 2, 3}, {{"A", 1}, {"B", 2u}}};
+            json const arr(0, v);
+            CHECK(arr.size() == 0);
+        }
+
+        SECTION("cnt = 1")
+        {
+            json const v = {1, "foo", 34.23, {1, 2, 3}, {{"A", 1}, {"B", 2u}}};
+            json const arr(1, v);
+            CHECK(arr.size() == 1);
+            for (const auto& x : arr)
+            {
+                CHECK(x == v);
+            }
+        }
+
+        SECTION("cnt = 3")
+        {
+            json const v = {1, "foo", 34.23, {1, 2, 3}, {{"A", 1}, {"B", 2u}}};
+            json const arr(3, v);
+            CHECK(arr.size() == 3);
+            for (const auto& x : arr)
+            {
+                CHECK(x == v);
+            }
+        }
+    }
+
+    SECTION("create a JSON container from an iterator range")
+    {
+        SECTION("object")
+        {
+            SECTION("json(begin(), end())")
+            {
+                {
+                    json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json const j_new(jobject.begin(), jobject.end());
+                    CHECK(j_new == jobject);
+                }
+                {
+                    json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json const j_new(jobject.cbegin(), jobject.cend());
+                    CHECK(j_new == jobject);
+                }
+            }
+
+            SECTION("json(begin(), begin())")
+            {
+                {
+                    json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json const j_new(jobject.begin(), jobject.begin());
+                    CHECK(j_new == json::object());
+                }
+                {
+                    json const jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    json const j_new(jobject.cbegin(), jobject.cbegin());
+                    CHECK(j_new == json::object());
+                }
+            }
+
+            SECTION("construct from subrange")
+            {
+                json const jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                json const j_new(jobject.find("b"), jobject.find("e"));
+                CHECK(j_new == json({{"b", 1}, {"c", 17u}, {"d", false}}));
+            }
+
+            SECTION("incompatible iterators")
+            {
+                {
+                    json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                    json jobject2 = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    CHECK_THROWS_WITH_AS(json(jobject.begin(), jobject2.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jobject2.begin(), jobject.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                }
+                {
+                    json const jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                    json const jobject2 = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                    CHECK_THROWS_WITH_AS(json(jobject.cbegin(), jobject2.cend()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jobject2.cbegin(), jobject.cend()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                }
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("json(begin(), end())")
+            {
+                {
+                    json jarray = {1, 2, 3, 4, 5};
+                    json const j_new(jarray.begin(), jarray.end());
+                    CHECK(j_new == jarray);
+                }
+                {
+                    json const jarray = {1, 2, 3, 4, 5};
+                    json const j_new(jarray.cbegin(), jarray.cend());
+                    CHECK(j_new == jarray);
+                }
+            }
+
+            SECTION("json(begin(), begin())")
+            {
+                {
+                    json jarray = {1, 2, 3, 4, 5};
+                    json j_new(jarray.begin(), jarray.begin());
+                    CHECK(j_new == json::array());
+                }
+                {
+                    json const jarray = {1, 2, 3, 4, 5};
+                    json const j_new(jarray.cbegin(), jarray.cbegin());
+                    CHECK(j_new == json::array());
+                }
+            }
+
+            SECTION("construct from subrange")
+            {
+                {
+                    json jarray = {1, 2, 3, 4, 5};
+                    json const j_new(jarray.begin() + 1, jarray.begin() + 3);
+                    CHECK(j_new == json({2, 3}));
+                }
+                {
+                    json const jarray = {1, 2, 3, 4, 5};
+                    json const j_new(jarray.cbegin() + 1, jarray.cbegin() + 3);
+                    CHECK(j_new == json({2, 3}));
+                }
+            }
+
+            SECTION("incompatible iterators")
+            {
+                {
+                    json jarray = {1, 2, 3, 4};
+                    json jarray2 = {2, 3, 4, 5};
+                    CHECK_THROWS_WITH_AS(json(jarray.begin(), jarray2.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jarray2.begin(), jarray.end()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                }
+                {
+                    json const jarray = {1, 2, 3, 4};
+                    json const jarray2 = {2, 3, 4, 5};
+                    CHECK_THROWS_WITH_AS(json(jarray.cbegin(), jarray2.cend()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(json(jarray2.cbegin(), jarray.cend()), "[json.exception.invalid_iterator.201] iterators are not compatible", json::invalid_iterator&);
+                }
+            }
+        }
+
+        SECTION("other values")
+        {
+            SECTION("construct with two valid iterators")
+            {
+                SECTION("null")
+                {
+                    {
+                        json j;
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.end()), "[json.exception.invalid_iterator.206] cannot construct with iterators from null", json::invalid_iterator&);
+                    }
+                    {
+                        json const j;
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cend()), "[json.exception.invalid_iterator.206] cannot construct with iterators from null", json::invalid_iterator&);
+                    }
+                }
+
+                SECTION("string")
+                {
+                    {
+                        json j = "foo";
+                        json const j_new(j.begin(), j.end());
+                        CHECK(j == j_new);
+                    }
+                    {
+                        json const j = "bar";
+                        json const j_new(j.cbegin(), j.cend());
+                        CHECK(j == j_new);
+                    }
+                }
+
+                SECTION("number (boolean)")
+                {
+                    {
+                        json j = false;
+                        json const j_new(j.begin(), j.end());
+                        CHECK(j == j_new);
+                    }
+                    {
+                        json const j = true;
+                        json const j_new(j.cbegin(), j.cend());
+                        CHECK(j == j_new);
+                    }
+                }
+
+                SECTION("number (integer)")
+                {
+                    {
+                        json j = 17;
+                        json const j_new(j.begin(), j.end());
+                        CHECK(j == j_new);
+                    }
+                    {
+                        json const j = 17;
+                        json const j_new(j.cbegin(), j.cend());
+                        CHECK(j == j_new);
+                    }
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    {
+                        json j = 17u;
+                        json const j_new(j.begin(), j.end());
+                        CHECK(j == j_new);
+                    }
+                    {
+                        json const j = 17u;
+                        json const j_new(j.cbegin(), j.cend());
+                        CHECK(j == j_new);
+                    }
+                }
+
+                SECTION("number (floating point)")
+                {
+                    {
+                        json j = 23.42;
+                        json const j_new(j.begin(), j.end());
+                        CHECK(j == j_new);
+                    }
+                    {
+                        json const j = 23.42;
+                        json const j_new(j.cbegin(), j.cend());
+                        CHECK(j == j_new);
+                    }
+                }
+
+                SECTION("binary")
+                {
+                    {
+                        json j = json::binary({1, 2, 3});
+                        json const j_new(j.begin(), j.end());
+                        CHECK((j == j_new));
+                    }
+                    {
+                        json const j = json::binary({1, 2, 3});
+                        json const j_new(j.cbegin(), j.cend());
+                        CHECK((j == j_new));
+                    }
+                }
+            }
+
+            SECTION("construct with two invalid iterators")
+            {
+                SECTION("string")
+                {
+                    {
+                        json j = "foo";
+                        CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                    {
+                        json const j = "bar";
+                        CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                }
+
+                SECTION("number (boolean)")
+                {
+                    {
+                        json j = false;
+                        CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                    {
+                        json const j = true;
+                        CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                }
+
+                SECTION("number (integer)")
+                {
+                    {
+                        json j = 17;
+                        CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                    {
+                        json const j = 17;
+                        CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                }
+
+                SECTION("number (integer)")
+                {
+                    {
+                        json j = 17u;
+                        CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                    {
+                        json const j = 17u;
+                        CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                }
+
+                SECTION("number (floating point)")
+                {
+                    {
+                        json j = 23.42;
+                        CHECK_THROWS_WITH_AS(json(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                    {
+                        json const j = 23.42;
+                        CHECK_THROWS_WITH_AS(json(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(json(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-constructor2.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-constructor2.cpp
new file mode 100644
index 00000000..18d0fdcc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-constructor2.cpp
@@ -0,0 +1,186 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("other constructors and destructor")
+{
+    SECTION("copy constructor")
+    {
+        SECTION("object")
+        {
+            json j {{"foo", 1}, {"bar", false}};
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+
+        SECTION("array")
+        {
+            json j {"foo", 1, 42.23, false};
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+
+        SECTION("null")
+        {
+            json j(nullptr);
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+
+        SECTION("boolean")
+        {
+            json j(true);
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+
+        SECTION("string")
+        {
+            json j("Hello world");
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+
+        SECTION("number (integer)")
+        {
+            json j(42);
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json j(42u);
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+
+        SECTION("number (floating-point)")
+        {
+            json j(42.23);
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+
+        SECTION("binary")
+        {
+            json j = json::binary({1, 2, 3});
+            json k(j); // NOLINT(performance-unnecessary-copy-initialization)
+            CHECK(j == k);
+        }
+    }
+
+    SECTION("move constructor")
+    {
+        json j {{"foo", "bar"}, {"baz", {1, 2, 3, 4}}, {"a", 42u}, {"b", 42.23}, {"c", nullptr}};
+        CHECK(j.type() == json::value_t::object);
+        const json k(std::move(j));
+        CHECK(k.type() == json::value_t::object);
+        CHECK(j.type() == json::value_t::null); // NOLINT: access after move is OK here
+    }
+
+    SECTION("copy assignment")
+    {
+        SECTION("object")
+        {
+            json j {{"foo", 1}, {"bar", false}};
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+
+        SECTION("array")
+        {
+            json j {"foo", 1, 42.23, false};
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+
+        SECTION("null")
+        {
+            json j(nullptr);
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+
+        SECTION("boolean")
+        {
+            json j(true);
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+
+        SECTION("string")
+        {
+            json j("Hello world");
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+
+        SECTION("number (integer)")
+        {
+            json j(42);
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json j(42u);
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+
+        SECTION("number (floating-point)")
+        {
+            json j(42.23);
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+
+        SECTION("binary")
+        {
+            json j = json::binary({1, 2, 3});
+            json k;
+            k = j;
+            CHECK(j == k);
+        }
+    }
+
+    SECTION("destructor")
+    {
+        SECTION("object")
+        {
+            auto* j = new json {{"foo", 1}, {"bar", false}}; // NOLINT(cppcoreguidelines-owning-memory)
+            delete j; // NOLINT(cppcoreguidelines-owning-memory)
+        }
+
+        SECTION("array")
+        {
+            auto* j = new json {"foo", 1, 1u, false, 23.42}; // NOLINT(cppcoreguidelines-owning-memory)
+            delete j; // NOLINT(cppcoreguidelines-owning-memory)
+        }
+
+        SECTION("string")
+        {
+            auto* j = new json("Hello world"); // NOLINT(cppcoreguidelines-owning-memory)
+            delete j; // NOLINT(cppcoreguidelines-owning-memory)
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-convenience.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-convenience.cpp
new file mode 100644
index 00000000..04e5aaed
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-convenience.cpp
@@ -0,0 +1,205 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <sstream>
+
+namespace
+{
+struct alt_string_iter
+{
+    alt_string_iter() = default;
+    alt_string_iter(const char* cstr)
+        : impl(cstr)
+    {}
+
+    void reserve(std::size_t s)
+    {
+        impl.reserve(s);
+    }
+
+    template<typename Iter>
+    void append(Iter first, Iter last)
+    {
+        impl.append(first, last);
+    }
+
+    std::string::const_iterator begin() const noexcept
+    {
+        return impl.begin();
+    }
+
+    std::string::const_iterator end() const noexcept
+    {
+        return impl.end();
+    }
+
+    std::size_t size() const noexcept
+    {
+        return impl.size();
+    }
+
+    alt_string_iter& operator+=(const char c)
+    {
+        impl += c;
+        return *this;
+    }
+
+    std::string impl{}; // NOLINT(readability-redundant-member-init)
+};
+
+struct alt_string_data
+{
+    alt_string_data() = default;
+    alt_string_data(const char* cstr)
+        : impl(cstr)
+    {}
+
+    void reserve(std::size_t s)
+    {
+        impl.reserve(s);
+    }
+
+    void append(const char* p, std::size_t s)
+    {
+        impl.append(p, s);
+    }
+
+    const char* data() const
+    {
+        return impl.data();
+    }
+
+    std::size_t size() const
+    {
+        return impl.size();
+    }
+
+    alt_string_data& operator+=(const char c)
+    {
+        impl += c;
+        return *this;
+    }
+
+    std::string impl{}; // NOLINT(readability-redundant-member-init)
+};
+
+void check_escaped(const char* original, const char* escaped = "", bool ensure_ascii = false);
+void check_escaped(const char* original, const char* escaped, const bool ensure_ascii)
+{
+    std::stringstream ss;
+    json::serializer s(nlohmann::detail::output_adapter<char>(ss), ' ');
+    s.dump_escaped(original, ensure_ascii);
+    CHECK(ss.str() == escaped);
+}
+} // namespace
+
+TEST_CASE("convenience functions")
+{
+    SECTION("type name as string")
+    {
+        CHECK(std::string(json(json::value_t::null).type_name()) == "null");
+        CHECK(std::string(json(json::value_t::object).type_name()) == "object");
+        CHECK(std::string(json(json::value_t::array).type_name()) == "array");
+        CHECK(std::string(json(json::value_t::number_integer).type_name()) == "number");
+        CHECK(std::string(json(json::value_t::number_unsigned).type_name()) == "number");
+        CHECK(std::string(json(json::value_t::number_float).type_name()) == "number");
+        CHECK(std::string(json(json::value_t::binary).type_name()) == "binary");
+        CHECK(std::string(json(json::value_t::boolean).type_name()) == "boolean");
+        CHECK(std::string(json(json::value_t::string).type_name()) == "string");
+        CHECK(std::string(json(json::value_t::discarded).type_name()) == "discarded");
+    }
+
+    SECTION("string escape")
+    {
+        check_escaped("\"", "\\\"");
+        check_escaped("\\", "\\\\");
+        check_escaped("\b", "\\b");
+        check_escaped("\f", "\\f");
+        check_escaped("\n", "\\n");
+        check_escaped("\r", "\\r");
+        check_escaped("\t", "\\t");
+
+        check_escaped("\x01", "\\u0001");
+        check_escaped("\x02", "\\u0002");
+        check_escaped("\x03", "\\u0003");
+        check_escaped("\x04", "\\u0004");
+        check_escaped("\x05", "\\u0005");
+        check_escaped("\x06", "\\u0006");
+        check_escaped("\x07", "\\u0007");
+        check_escaped("\x08", "\\b");
+        check_escaped("\x09", "\\t");
+        check_escaped("\x0a", "\\n");
+        check_escaped("\x0b", "\\u000b");
+        check_escaped("\x0c", "\\f");
+        check_escaped("\x0d", "\\r");
+        check_escaped("\x0e", "\\u000e");
+        check_escaped("\x0f", "\\u000f");
+        check_escaped("\x10", "\\u0010");
+        check_escaped("\x11", "\\u0011");
+        check_escaped("\x12", "\\u0012");
+        check_escaped("\x13", "\\u0013");
+        check_escaped("\x14", "\\u0014");
+        check_escaped("\x15", "\\u0015");
+        check_escaped("\x16", "\\u0016");
+        check_escaped("\x17", "\\u0017");
+        check_escaped("\x18", "\\u0018");
+        check_escaped("\x19", "\\u0019");
+        check_escaped("\x1a", "\\u001a");
+        check_escaped("\x1b", "\\u001b");
+        check_escaped("\x1c", "\\u001c");
+        check_escaped("\x1d", "\\u001d");
+        check_escaped("\x1e", "\\u001e");
+        check_escaped("\x1f", "\\u001f");
+
+        // invalid UTF-8 characters
+        CHECK_THROWS_WITH_AS(check_escaped("ä\xA9ü"), "[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9", json::type_error&);
+
+        CHECK_THROWS_WITH_AS(check_escaped("\xC2"), "[json.exception.type_error.316] incomplete UTF-8 string; last byte: 0xC2", json::type_error&);
+    }
+
+    SECTION("string concat")
+    {
+        using nlohmann::detail::concat;
+
+        const char* expected = "Hello, world!";
+        alt_string_iter const hello_iter{"Hello, "};
+        alt_string_data const hello_data{"Hello, "};
+        std::string const world = "world";
+
+        SECTION("std::string")
+        {
+            std::string str1 = concat(hello_iter, world, '!');
+            std::string str2 = concat(hello_data, world, '!');
+            std::string str3 = concat("Hello, ", world, '!');
+
+            CHECK(str1 == expected);
+            CHECK(str2 == expected);
+            CHECK(str3 == expected);
+        }
+
+        SECTION("alt_string_iter")
+        {
+            alt_string_iter str = concat<alt_string_iter>(hello_iter, world, '!');
+
+            CHECK(str.impl == expected);
+        }
+
+        SECTION("alt_string_data")
+        {
+            alt_string_data str = concat<alt_string_data>(hello_data, world, '!');
+
+            CHECK(str.impl == expected);
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-conversions.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-conversions.cpp
new file mode 100644
index 00000000..a5867758
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-conversions.cpp
@@ -0,0 +1,1730 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+// cmake/test.cmake selects the C++ standard versions with which to build a
+// unit test based on the presence of JSON_HAS_CPP_<VERSION> macros.
+// When using macros that are only defined for particular versions of the standard
+// (e.g., JSON_HAS_FILESYSTEM for C++17 and up), please mention the corresponding
+// version macro in a comment close by, like this:
+// JSON_HAS_CPP_<VERSION> (do not remove; see note at top of file)
+
+#include "doctest_compatibility.h"
+
+// skip tests if JSON_DisableEnumSerialization=ON (#4384)
+#if defined(JSON_DISABLE_ENUM_SERIALIZATION) && (JSON_DISABLE_ENUM_SERIALIZATION == 1)
+    #define SKIP_TESTS_FOR_ENUM_SERIALIZATION
+#endif
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <valarray>
+
+
+// NLOHMANN_JSON_SERIALIZE_ENUM uses a static std::pair
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors")
+
+#if (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_HAS_CXX17) && _HAS_CXX17 == 1) // fix for issue #464
+    #define JSON_HAS_CPP_17
+    #define JSON_HAS_CPP_14
+#elif (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
+    #define JSON_HAS_CPP_14
+#endif
+
+#ifdef JSON_HAS_CPP_17
+    #if __has_include(<optional>)
+        #include <optional>
+    #elif __has_include(<experimental/optional>)
+        #include <experimental/optional>
+    #endif
+#endif
+
+#if defined(JSON_HAS_CPP_17)
+    #include <string_view>
+#endif
+
+TEST_CASE("value conversion")
+{
+    SECTION("get an object (explicit)")
+    {
+        const json::object_t o_reference = {{"object", json::object()},
+            {"array", {1, 2, 3, 4}},
+            {"number", 42},
+            {"boolean", false},
+            {"null", nullptr},
+            {"string", "Hello world"}
+        };
+        json j(o_reference);
+
+        SECTION("json::object_t")
+        {
+            json::object_t const o = j.get<json::object_t>();
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::map<json::string_t, json>")
+        {
+            const std::map<json::string_t, json> o =
+                j.get<std::map<json::string_t, json>>();
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::multimap<json::string_t, json>")
+        {
+            const std::multimap<json::string_t, json> o =
+                j.get<std::multimap<json::string_t, json>>();
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::unordered_map<json::string_t, json>")
+        {
+            const std::unordered_map<json::string_t, json> o =
+                j.get<std::unordered_map<json::string_t, json>>();
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::unordered_multimap<json::string_t, json>")
+        {
+            const std::unordered_multimap<json::string_t, json> o =
+                j.get<std::unordered_multimap<json::string_t, json>>();
+            CHECK(json(o) == j);
+        }
+
+        SECTION("exception in case of a non-object type")
+        {
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::null).get<json::object_t>(),
+                "[json.exception.type_error.302] type must be object, but is null", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::array).get<json::object_t>(),
+                "[json.exception.type_error.302] type must be object, but is array", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::string).get<json::object_t>(),
+                "[json.exception.type_error.302] type must be object, but is string", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::boolean).get<json::object_t>(),
+                                 "[json.exception.type_error.302] type must be object, "
+                                 "but is boolean", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_integer).get<json::object_t>(),
+                "[json.exception.type_error.302] type must be object, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_unsigned).get<json::object_t>(),
+                "[json.exception.type_error.302] type must be object, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_float).get<json::object_t>(),
+                "[json.exception.type_error.302] type must be object, but is number", json::type_error&);
+        }
+    }
+
+    SECTION("get an object (explicit, get_to)")
+    {
+        const json::object_t o_reference = {{"object", json::object()},
+            {"array", {1, 2, 3, 4}},
+            {"number", 42},
+            {"boolean", false},
+            {"null", nullptr},
+            {"string", "Hello world"}
+        };
+        json j(o_reference);
+
+        SECTION("json::object_t")
+        {
+            json::object_t o = {{"previous", "value"}};
+            j.get_to(o);
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::map<json::string_t, json>")
+        {
+            std::map<json::string_t, json> o{{"previous", "value"}};
+            j.get_to(o);
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::multimap<json::string_t, json>")
+        {
+            std::multimap<json::string_t, json> o{{"previous", "value"}};
+            j.get_to(o);
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::unordered_map<json::string_t, json>")
+        {
+            std::unordered_map<json::string_t, json> o{{"previous", "value"}};
+            j.get_to(o);
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::unordered_multimap<json::string_t, json>")
+        {
+            std::unordered_multimap<json::string_t, json> o{{"previous", "value"}};
+            j.get_to(o);
+            CHECK(json(o) == j);
+        }
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+
+    SECTION("get an object (implicit)")
+    {
+        const json::object_t o_reference = {{"object", json::object()},
+            {"array", {1, 2, 3, 4}},
+            {"number", 42},
+            {"boolean", false},
+            {"null", nullptr},
+            {"string", "Hello world"}
+        };
+        json j(o_reference);
+
+        SECTION("json::object_t")
+        {
+            const json::object_t o = j;
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::map<json::string_t, json>")
+        {
+            const std::map<json::string_t, json> o = j;
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::multimap<json::string_t, json>")
+        {
+            const std::multimap<json::string_t, json> o = j;
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::unordered_map<json::string_t, json>")
+        {
+            const std::unordered_map<json::string_t, json> o = j;
+            CHECK(json(o) == j);
+        }
+
+        SECTION("std::unordered_multimap<json::string_t, json>")
+        {
+            const std::unordered_multimap<json::string_t, json> o = j;
+            CHECK(json(o) == j);
+        }
+    }
+#endif
+
+    SECTION("get an array (explicit)")
+    {
+        const json::array_t a_reference{json(1),     json(1u),       json(2.2),
+                                        json(false), json("string"), json()};
+        json j(a_reference);
+
+        SECTION("json::array_t")
+        {
+            const json::array_t a = j.get<json::array_t>();
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::list<json>")
+        {
+            const std::list<json> a = j.get<std::list<json>>();
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::forward_list<json>")
+        {
+            const std::forward_list<json> a = j.get<std::forward_list<json>>();
+            CHECK(json(a) == j);
+
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::null).get<std::forward_list<json>>(),
+                "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+        }
+
+        SECTION("std::vector<json>")
+        {
+            const std::vector<json> a = j.get<std::vector<json>>();
+            CHECK(json(a) == j);
+
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::null).get<std::vector<json>>(),
+                "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+
+#if !defined(JSON_NOEXCEPTION)
+            SECTION("reserve is called on containers that supports it")
+            {
+                // make sure all values are properly copied
+                const json j2({1, 2, 3, 4, 5, 6, 7, 8, 9, 10});
+                auto v2 = j2.get<std::vector<int>>();
+                CHECK(v2.size() == 10);
+            }
+#endif
+        }
+
+        SECTION("built-in arrays")
+        {
+            const char str[] = "a string"; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            const int nbs[] = {0, 1, 2}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+
+            const json j2 = nbs;
+            const json j3 = str;
+
+            auto v = j2.get<std::vector<int>>();
+            auto s = j3.get<std::string>();
+            CHECK(std::equal(v.begin(), v.end(), std::begin(nbs)));
+            CHECK(s == str);
+        }
+
+        SECTION("std::deque<json>")
+        {
+            const std::deque<json> a = j.get<std::deque<json>>();
+            CHECK(json(a) == j);
+        }
+
+        SECTION("exception in case of a non-array type")
+        {
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::object).get<std::vector<int>>(),
+                "[json.exception.type_error.302] type must be array, but is object", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::null).get<json::array_t>(),
+                "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::object).get<json::array_t>(),
+                "[json.exception.type_error.302] type must be array, but is object", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::string).get<json::array_t>(),
+                "[json.exception.type_error.302] type must be array, but is string", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::boolean).get<json::array_t>(),
+                "[json.exception.type_error.302] type must be array, but is boolean", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_integer).get<json::array_t>(),
+                "[json.exception.type_error.302] type must be array, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_unsigned).get<json::array_t>(),
+                "[json.exception.type_error.302] type must be array, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_float).get<json::array_t>(),
+                "[json.exception.type_error.302] type must be array, but is number", json::type_error&);
+        }
+    }
+
+    SECTION("get an array (explicit, get_to)")
+    {
+        const json::array_t a_reference{json(1),     json(1u),       json(2.2),
+                                        json(false), json("string"), json()};
+        json j(a_reference);
+
+        SECTION("json::array_t")
+        {
+            json::array_t a{"previous", "value"};
+            j.get_to(a);
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::valarray<json>")
+        {
+            std::valarray<json> a{"previous", "value"};
+            j.get_to(a);
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::list<json>")
+        {
+            std::list<json> a{"previous", "value"};
+            j.get_to(a);
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::forward_list<json>")
+        {
+            std::forward_list<json> a{"previous", "value"};
+            j.get_to(a);
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::vector<json>")
+        {
+            std::vector<json> a{"previous", "value"};
+            j.get_to(a);
+            CHECK(json(a) == j);
+        }
+
+        SECTION("built-in arrays")
+        {
+            const int nbs[] = {0, 1, 2}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            int nbs2[] = {0, 0, 0}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+
+            const json j2 = nbs;
+            j2.get_to(nbs2);
+            CHECK(std::equal(std::begin(nbs), std::end(nbs), std::begin(nbs2)));
+        }
+
+        SECTION("built-in arrays: 2D")
+        {
+            const int nbs[][3] = {{0, 1, 2}, {3, 4, 5}}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            int nbs2[][3] = {{0, 0, 0}, {0, 0, 0}}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+
+            const json j2 = nbs;
+            j2.get_to(nbs2);
+            CHECK(std::equal(std::begin(nbs[0]), std::end(nbs[1]), std::begin(nbs2[0])));
+        }
+
+        SECTION("built-in arrays: 3D")
+        {
+            // NOLINTBEGIN(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            const int nbs[][2][3] = {\
+                {{0, 1, 2}, {3, 4, 5}}, \
+                {{10, 11, 12}, {13, 14, 15}}\
+            };
+            int nbs2[][2][3] = {\
+                {{0, 0, 0}, {0, 0, 0}}, \
+                {{0, 0, 0}, {0, 0, 0}}\
+            };
+            // NOLINTEND(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+
+            const json j2 = nbs;
+            j2.get_to(nbs2);
+            CHECK(std::equal(std::begin(nbs[0][0]), std::end(nbs[1][1]), std::begin(nbs2[0][0])));
+        }
+
+        SECTION("built-in arrays: 4D")
+        {
+            // NOLINTBEGIN(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+            const int nbs[][2][2][3] = {\
+                {
+                    \
+                    {{0, 1, 2}, {3, 4, 5}}, \
+                    {{10, 11, 12}, {13, 14, 15}}\
+                }, \
+                {
+                    \
+                    {{20, 21, 22}, {23, 24, 25}}, \
+                    {{30, 31, 32}, {33, 34, 35}}\
+                }\
+            };
+            int nbs2[][2][2][3] = {\
+                {
+                    \
+                    {{0, 0, 0}, {0, 0, 0}}, \
+                    {{0, 0, 0}, {0, 0, 0}}\
+                }, \
+                {
+                    \
+                    {{0, 0, 0}, {0, 0, 0}}, \
+                    {{0, 0, 0}, {0, 0, 0}}\
+                }\
+            };
+            // NOLINTEND(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+
+            const json j2 = nbs;
+            j2.get_to(nbs2);
+            CHECK(std::equal(std::begin(nbs[0][0][0]), std::end(nbs[1][1][1]), std::begin(nbs2[0][0][0])));
+        }
+
+        SECTION("std::deque<json>")
+        {
+            std::deque<json> a{"previous", "value"};
+            j.get_to(a);
+            CHECK(json(a) == j);
+        }
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("get an array (implicit)")
+    {
+        const json::array_t a_reference{json(1),     json(1u),       json(2.2),
+                                        json(false), json("string"), json()};
+        json j(a_reference);
+
+        SECTION("json::array_t")
+        {
+            const json::array_t a = j;
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::list<json>")
+        {
+            const std::list<json> a = j;
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::forward_list<json>")
+        {
+            const std::forward_list<json> a = j;
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::vector<json>")
+        {
+            const std::vector<json> a = j;
+            CHECK(json(a) == j);
+        }
+
+        SECTION("std::deque<json>")
+        {
+            const std::deque<json> a = j;
+            CHECK(json(a) == j);
+        }
+    }
+#endif
+
+    SECTION("get a string (explicit)")
+    {
+        const json::string_t s_reference{"Hello world"};
+        json j(s_reference);
+
+        SECTION("string_t")
+        {
+            const json::string_t s = j.get<json::string_t>();
+            CHECK(json(s) == j);
+        }
+
+        SECTION("std::string")
+        {
+            const std::string s = j.get<std::string>();
+            CHECK(json(s) == j);
+        }
+#if defined(JSON_HAS_CPP_17)
+        SECTION("std::string_view")
+        {
+            std::string_view const s = j.get<std::string_view>();
+            CHECK(json(s) == j);
+        }
+#endif
+
+        SECTION("exception in case of a non-string type")
+        {
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::null).get<json::string_t>(),
+                "[json.exception.type_error.302] type must be string, but is null", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::object).get<json::string_t>(),
+                "[json.exception.type_error.302] type must be string, but is object", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::array).get<json::string_t>(),
+                "[json.exception.type_error.302] type must be string, but is array", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::boolean).get<json::string_t>(),
+                                 "[json.exception.type_error.302] type must be string, "
+                                 "but is boolean", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_integer).get<json::string_t>(),
+                "[json.exception.type_error.302] type must be string, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_unsigned).get<json::string_t>(),
+                "[json.exception.type_error.302] type must be string, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_float).get<json::string_t>(),
+                "[json.exception.type_error.302] type must be string, but is number", json::type_error&);
+        }
+
+#if defined(JSON_HAS_CPP_17)
+        SECTION("exception in case of a non-string type using string_view")
+        {
+            CHECK_THROWS_WITH_AS(json(json::value_t::null).get<std::string_view>(),
+                                 "[json.exception.type_error.302] type must be string, but is null", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::object).get<std::string_view>(),
+                                 "[json.exception.type_error.302] type must be string, but is object", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::array).get<std::string_view>(),
+                                 "[json.exception.type_error.302] type must be string, but is array", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::boolean).get<std::string_view>(),
+                                 "[json.exception.type_error.302] type must be string, but is boolean", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::number_integer).get<std::string_view>(),
+                                 "[json.exception.type_error.302] type must be string, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::number_unsigned).get<std::string_view>(),
+                                 "[json.exception.type_error.302] type must be string, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::number_float).get<std::string_view>(),
+                                 "[json.exception.type_error.302] type must be string, but is number", json::type_error&);
+        }
+#endif
+    }
+
+    SECTION("get a string (explicit, get_to)")
+    {
+        const json::string_t s_reference{"Hello world"};
+        json j(s_reference);
+
+        SECTION("string_t")
+        {
+            json::string_t s = "previous value";
+            j.get_to(s);
+            CHECK(json(s) == j);
+        }
+
+        SECTION("std::string")
+        {
+            std::string s = "previous value";
+            j.get_to(s);
+            CHECK(json(s) == j);
+        }
+#if defined(JSON_HAS_CPP_17)
+        SECTION("std::string_view")
+        {
+            std::string const s = "previous value";
+            std::string_view sv = s;
+            j.get_to(sv);
+            CHECK(json(sv) == j);
+        }
+#endif
+    }
+
+    SECTION("get null (explicit)")
+    {
+        std::nullptr_t n = nullptr;
+        const json j(n);
+
+        auto n2 = j.get<std::nullptr_t>();
+        CHECK(n2 == n);
+
+        CHECK_THROWS_WITH_AS(json(json::value_t::string).get<std::nullptr_t>(),
+                             "[json.exception.type_error.302] type must be null, but is string", json::type_error&);
+        CHECK_THROWS_WITH_AS(json(json::value_t::object).get<std::nullptr_t>(),
+                             "[json.exception.type_error.302] type must be null, but is object", json::type_error&);
+        CHECK_THROWS_WITH_AS(json(json::value_t::array).get<std::nullptr_t>(),
+                             "[json.exception.type_error.302] type must be null, but is array", json::type_error&);
+        CHECK_THROWS_WITH_AS(json(json::value_t::boolean).get<std::nullptr_t>(),
+                             "[json.exception.type_error.302] type must be null, but is boolean", json::type_error&);
+        CHECK_THROWS_WITH_AS(json(json::value_t::number_integer).get<std::nullptr_t>(),
+                             "[json.exception.type_error.302] type must be null, but is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(json(json::value_t::number_unsigned).get<std::nullptr_t>(),
+                             "[json.exception.type_error.302] type must be null, but is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(json(json::value_t::number_float).get<std::nullptr_t>(),
+                             "[json.exception.type_error.302] type must be null, but is number", json::type_error&);
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("get a string (implicit)")
+    {
+        const json::string_t s_reference{"Hello world"};
+        json j(s_reference);
+
+        SECTION("string_t")
+        {
+            const json::string_t s = j;
+            CHECK(json(s) == j);
+        }
+
+#if defined(JSON_HAS_CPP_17)
+        SECTION("std::string_view")
+        {
+            std::string_view const s = j.get<std::string_view>();
+            CHECK(json(s) == j);
+        }
+#endif
+
+        SECTION("std::string")
+        {
+            const std::string s = j;
+            CHECK(json(s) == j);
+        }
+    }
+#endif
+
+    SECTION("get a boolean (explicit)")
+    {
+        const json::boolean_t b_reference{true};
+        json j(b_reference);
+
+        SECTION("boolean_t")
+        {
+            auto b = j.get<json::boolean_t>();
+            CHECK(json(b) == j);
+        }
+
+        SECTION("uint8_t")
+        {
+            auto n = j.get<uint8_t>();
+            CHECK(n == 1);
+        }
+
+        SECTION("bool")
+        {
+            const bool b = j.get<bool>();
+            CHECK(json(b) == j);
+        }
+
+        SECTION("exception in case of a non-number type")
+        {
+            CHECK_THROWS_AS(json(json::value_t::string).get<uint8_t>(),
+                            json::type_error&);
+
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::null).get<json::boolean_t>(),
+                "[json.exception.type_error.302] type must be boolean, but is null", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::object).get<json::boolean_t>(),
+                                 "[json.exception.type_error.302] type must be boolean, "
+                                 "but is object", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::array).get<json::boolean_t>(),
+                "[json.exception.type_error.302] type must be boolean, but is array", json::type_error&);
+            CHECK_THROWS_WITH_AS(json(json::value_t::string).get<json::boolean_t>(),
+                                 "[json.exception.type_error.302] type must be boolean, "
+                                 "but is string", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_integer).get<json::boolean_t>(),
+                "[json.exception.type_error.302] type must be boolean, but is "
+                "number", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_unsigned).get<json::boolean_t>(),
+                "[json.exception.type_error.302] type must be boolean, but is "
+                "number", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::number_float).get<json::boolean_t>(),
+                "[json.exception.type_error.302] type must be boolean, but is "
+                "number", json::type_error&);
+        }
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("get a boolean (implicit)")
+    {
+        const json::boolean_t b_reference{true};
+        json j(b_reference);
+
+        SECTION("boolean_t")
+        {
+            const json::boolean_t b = j;
+            CHECK(json(b) == j);
+        }
+
+        SECTION("bool")
+        {
+            const bool b = j;
+            CHECK(json(b) == j);
+        }
+    }
+#endif
+
+    SECTION("get an integer number (explicit)")
+    {
+        const json::number_integer_t n_reference{42};
+        json j(n_reference);
+        const json::number_unsigned_t n_unsigned_reference{42u};
+        json j_unsigned(n_unsigned_reference);
+
+        SECTION("number_integer_t")
+        {
+            auto n = j.get<json::number_integer_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("number_unsigned_t")
+        {
+            auto n = j_unsigned.get<json::number_unsigned_t>();
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("short")
+        {
+            auto n = j.get<short>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("unsigned short")
+        {
+            auto n = j.get<unsigned short>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int")
+        {
+            const int n = j.get<int>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("unsigned int")
+        {
+            auto n = j.get<unsigned int>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("long")
+        {
+            const long n = j.get<long>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("unsigned long")
+        {
+            auto n = j.get<unsigned long>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("long long")
+        {
+            auto n = j.get<long long>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("unsigned long long")
+        {
+            auto n = j.get<unsigned long long>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int8_t")
+        {
+            auto n = j.get<int8_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int16_t")
+        {
+            auto n = j.get<int16_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int32_t")
+        {
+            auto n = j.get<int32_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int64_t")
+        {
+            auto n = j.get<int64_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int8_fast_t")
+        {
+            auto n = j.get<int_fast8_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int16_fast_t")
+        {
+            auto n = j.get<int_fast16_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int32_fast_t")
+        {
+            auto n = j.get<int_fast32_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int64_fast_t")
+        {
+            auto n = j.get<int_fast64_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int8_least_t")
+        {
+            auto n = j.get<int_least8_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int16_least_t")
+        {
+            auto n = j.get<int_least16_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int32_least_t")
+        {
+            auto n = j.get<int_least32_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int64_least_t")
+        {
+            auto n = j.get<int_least64_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint8_t")
+        {
+            auto n = j.get<uint8_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint16_t")
+        {
+            auto n = j.get<uint16_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint32_t")
+        {
+            auto n = j.get<uint32_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint64_t")
+        {
+            auto n = j.get<uint64_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint8_fast_t")
+        {
+            auto n = j.get<uint_fast8_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint16_fast_t")
+        {
+            auto n = j.get<uint_fast16_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint32_fast_t")
+        {
+            auto n = j.get<uint_fast32_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint64_fast_t")
+        {
+            auto n = j.get<uint_fast64_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint8_least_t")
+        {
+            auto n = j.get<uint_least8_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint16_least_t")
+        {
+            auto n = j.get<uint_least16_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint32_least_t")
+        {
+            auto n = j.get<uint_least32_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint64_least_t")
+        {
+            auto n = j.get<uint_least64_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("exception in case of a non-number type")
+        {
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::null).get<json::number_integer_t>(),
+                "[json.exception.type_error.302] type must be number, but is null", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::object).get<json::number_integer_t>(),
+                "[json.exception.type_error.302] type must be number, but is object", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::array).get<json::number_integer_t>(),
+                "[json.exception.type_error.302] type must be number, but is array", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::string).get<json::number_integer_t>(),
+                "[json.exception.type_error.302] type must be number, but is string", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::boolean).get<json::number_integer_t>(),
+                "[json.exception.type_error.302] type must be number, but is "
+                "boolean", json::type_error&);
+
+            CHECK_NOTHROW(
+                json(json::value_t::number_float).get<json::number_integer_t>());
+            CHECK_NOTHROW(
+                json(json::value_t::number_float).get<json::number_unsigned_t>());
+        }
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("get an integer number (implicit)")
+    {
+        json::number_integer_t const n_reference{42};
+        json j(n_reference);
+        json::number_unsigned_t const n_unsigned_reference{42u};
+        json j_unsigned(n_unsigned_reference);
+
+        SECTION("number_integer_t")
+        {
+            auto n = j.get<json::number_integer_t>();
+            CHECK(json(n) == j);
+        }
+
+        SECTION("number_unsigned_t")
+        {
+            auto n = j_unsigned.get<json::number_unsigned_t>();
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("short")
+        {
+            short const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("unsigned short")
+        {
+            unsigned short const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("int")
+        {
+            int const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("unsigned int")
+        {
+            unsigned int const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("long")
+        {
+            long const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("unsigned long")
+        {
+            unsigned long const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("long long")
+        {
+            long long const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("unsigned long long")
+        {
+            unsigned long long const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("int8_t")
+        {
+            int8_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int16_t")
+        {
+            int16_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int32_t")
+        {
+            int32_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int64_t")
+        {
+            int64_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int8_fast_t")
+        {
+            int_fast8_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int16_fast_t")
+        {
+            int_fast16_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int32_fast_t")
+        {
+            int_fast32_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int64_fast_t")
+        {
+            int_fast64_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int8_least_t")
+        {
+            int_least8_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int16_least_t")
+        {
+            int_least16_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int32_least_t")
+        {
+            int_least32_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("int64_least_t")
+        {
+            int_least64_t const n = j;
+            CHECK(json(n) == j);
+        }
+
+        SECTION("uint8_t")
+        {
+            uint8_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint16_t")
+        {
+            uint16_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint32_t")
+        {
+            uint32_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint64_t")
+        {
+            uint64_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint8_fast_t")
+        {
+            uint_fast8_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint16_fast_t")
+        {
+            uint_fast16_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint32_fast_t")
+        {
+            uint_fast32_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint64_fast_t")
+        {
+            uint_fast64_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint8_least_t")
+        {
+            uint_least8_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint16_least_t")
+        {
+            uint_least16_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint32_least_t")
+        {
+            uint_least32_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+
+        SECTION("uint64_least_t")
+        {
+            uint_least64_t const n = j_unsigned;
+            CHECK(json(n) == j_unsigned);
+        }
+    }
+#endif
+
+    SECTION("get a floating-point number (explicit)")
+    {
+        json::number_float_t const n_reference{42.23};
+        json const j(n_reference);
+
+        SECTION("number_float_t")
+        {
+            auto n = j.get<json::number_float_t>();
+            CHECK(json(n).m_data.m_value.number_float == Approx(j.m_data.m_value.number_float));
+        }
+
+        SECTION("float")
+        {
+            auto n = j.get<float>();
+            CHECK(json(n).m_data.m_value.number_float == Approx(j.m_data.m_value.number_float));
+        }
+
+        SECTION("double")
+        {
+            auto n = j.get<double>();
+            CHECK(json(n).m_data.m_value.number_float == Approx(j.m_data.m_value.number_float));
+        }
+
+        SECTION("exception in case of a non-string type")
+        {
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::null).get<json::number_float_t>(),
+                "[json.exception.type_error.302] type must be number, but is null", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::object).get<json::number_float_t>(),
+                "[json.exception.type_error.302] type must be number, but is object", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::array).get<json::number_float_t>(),
+                "[json.exception.type_error.302] type must be number, but is array", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::string).get<json::number_float_t>(),
+                "[json.exception.type_error.302] type must be number, but is string", json::type_error&);
+            CHECK_THROWS_WITH_AS(
+                json(json::value_t::boolean).get<json::number_float_t>(),
+                "[json.exception.type_error.302] type must be number, but is "
+                "boolean", json::type_error&);
+
+            CHECK_NOTHROW(
+                json(json::value_t::number_integer).get<json::number_float_t>());
+            CHECK_NOTHROW(
+                json(json::value_t::number_unsigned).get<json::number_float_t>());
+        }
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("get a floating-point number (implicit)")
+    {
+        json::number_float_t const n_reference{42.23};
+        json const j(n_reference);
+
+        SECTION("number_float_t")
+        {
+            json::number_float_t const n = j;
+            CHECK(json(n).m_data.m_value.number_float == Approx(j.m_data.m_value.number_float));
+        }
+
+        SECTION("float")
+        {
+            float const n = j;
+            CHECK(json(n).m_data.m_value.number_float == Approx(j.m_data.m_value.number_float));
+        }
+
+        SECTION("double")
+        {
+            double const n = j;
+            CHECK(json(n).m_data.m_value.number_float == Approx(j.m_data.m_value.number_float));
+        }
+    }
+#endif
+
+    SECTION("get a binary value (explicit)")
+    {
+        json::binary_t const n_reference{{1, 2, 3}};
+        json j(n_reference);
+
+        SECTION("binary_t")
+        {
+            json::binary_t const b = j.get<json::binary_t>();
+            CHECK(*json(b).m_data.m_value.binary == *j.m_data.m_value.binary);
+        }
+
+        SECTION("get_binary()")
+        {
+            SECTION("non-const")
+            {
+                auto& b = j.get_binary();
+                CHECK(*json(b).m_data.m_value.binary == *j.m_data.m_value.binary);
+            }
+
+            SECTION("non-const")
+            {
+                const json j_const = j; // NOLINT(performance-unnecessary-copy-initialization)
+                const auto& b = j_const.get_binary();
+                CHECK(*json(b).m_data.m_value.binary == *j.m_data.m_value.binary);
+            }
+        }
+
+        SECTION("exception in case of a non-string type")
+        {
+            json j_null(json::value_t::null);
+            json j_object(json::value_t::object);
+            json j_array(json::value_t::array);
+            json j_string(json::value_t::string);
+            json j_boolean(json::value_t::boolean);
+            const json j_null_const(json::value_t::null);
+            const json j_object_const(json::value_t::object);
+            const json j_array_const(json::value_t::array);
+            const json j_string_const(json::value_t::string);
+            const json j_boolean_const(json::value_t::boolean);
+
+            CHECK_THROWS_WITH_AS(j_null.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is null",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_object.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is object",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_array.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is array",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_string.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is string",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_boolean.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is boolean",
+                                 json::type_error&);
+
+            CHECK_THROWS_WITH_AS(j_null_const.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is null",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_object_const.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is object",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_array_const.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is array",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_string_const.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is string",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_boolean_const.get<json::binary_t>(),
+                                 "[json.exception.type_error.302] type must be binary, but is boolean",
+                                 json::type_error&);
+
+            CHECK_THROWS_WITH_AS(j_null.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is null",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_object.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is object",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_array.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is array",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_string.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is string",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_boolean.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is boolean",
+                                 json::type_error&);
+
+            CHECK_THROWS_WITH_AS(j_null_const.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is null",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_object_const.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is object",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_array_const.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is array",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_string_const.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is string",
+                                 json::type_error&);
+            CHECK_THROWS_WITH_AS(j_boolean_const.get_binary(),
+                                 "[json.exception.type_error.302] type must be binary, but is boolean",
+                                 json::type_error&);
+        }
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("get a binary value (implicit)")
+    {
+        json::binary_t const n_reference{{1, 2, 3}};
+        json const j(n_reference);
+
+        SECTION("binary_t")
+        {
+            json::binary_t const b = j;
+            CHECK(*json(b).m_data.m_value.binary == *j.m_data.m_value.binary);
+        }
+    }
+#endif
+
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+    SECTION("get an enum")
+    {
+        enum c_enum { value_1, value_2 };
+        enum class cpp_enum { value_1, value_2 };
+
+        CHECK(json(value_1).get<c_enum>() == value_1);
+        CHECK(json(cpp_enum::value_1).get<cpp_enum>() == cpp_enum::value_1);
+    }
+#endif
+
+    SECTION("more involved conversions")
+    {
+        SECTION("object-like STL containers")
+        {
+            json const j1 = {{"one", 1}, {"two", 2}, {"three", 3}};
+            json const j2 = {{"one", 1u}, {"two", 2u}, {"three", 3u}};
+            json const j3 = {{"one", 1.1}, {"two", 2.2}, {"three", 3.3}};
+            json const j4 = {{"one", true}, {"two", false}, {"three", true}};
+            json const j5 = {{"one", "eins"}, {"two", "zwei"}, {"three", "drei"}};
+
+            SECTION("std::map")
+            {
+                j1.get<std::map<std::string, int>>();
+                j2.get<std::map<std::string, unsigned int>>();
+                j3.get<std::map<std::string, double>>();
+                j4.get<std::map<std::string, bool>>();
+                j5.get<std::map<std::string, std::string>>();
+            }
+
+            SECTION("std::unordered_map")
+            {
+                j1.get<std::unordered_map<std::string, int>>();
+                j2.get<std::unordered_map<std::string, unsigned int>>();
+                j3.get<std::unordered_map<std::string, double>>();
+                j4.get<std::unordered_map<std::string, bool>>();
+                j5.get<std::unordered_map<std::string, std::string>>();
+                // CHECK(m5["one"] == "eins");
+            }
+
+            SECTION("std::multimap")
+            {
+                j1.get<std::multimap<std::string, int>>();
+                j2.get<std::multimap<std::string, unsigned int>>();
+                j3.get<std::multimap<std::string, double>>();
+                j4.get<std::multimap<std::string, bool>>();
+                j5.get<std::multimap<std::string, std::string>>();
+                // CHECK(m5["one"] == "eins");
+            }
+
+            SECTION("std::unordered_multimap")
+            {
+                j1.get<std::unordered_multimap<std::string, int>>();
+                j2.get<std::unordered_multimap<std::string, unsigned int>>();
+                j3.get<std::unordered_multimap<std::string, double>>();
+                j4.get<std::unordered_multimap<std::string, bool>>();
+                j5.get<std::unordered_multimap<std::string, std::string>>();
+                // CHECK(m5["one"] == "eins");
+            }
+
+            SECTION("exception in case of a non-object type")
+            {
+                CHECK_THROWS_WITH_AS(
+                    (json().get<std::map<std::string, int>>()),
+                    "[json.exception.type_error.302] type must be object, but is null", json::type_error&);
+            }
+        }
+
+        SECTION("array-like STL containers")
+        {
+            json const j1 = {1, 2, 3, 4};
+            json const j2 = {1u, 2u, 3u, 4u};
+            json const j3 = {1.2, 2.3, 3.4, 4.5};
+            json const j4 = {true, false, true};
+            json const j5 = {"one", "two", "three"};
+
+            SECTION("std::list")
+            {
+                j1.get<std::list<int>>();
+                j2.get<std::list<unsigned int>>();
+                j3.get<std::list<double>>();
+                j4.get<std::list<bool>>();
+                j5.get<std::list<std::string>>();
+            }
+
+            SECTION("std::forward_list")
+            {
+                j1.get<std::forward_list<int>>();
+                j2.get<std::forward_list<unsigned int>>();
+                j3.get<std::forward_list<double>>();
+                j4.get<std::forward_list<bool>>();
+                j5.get<std::forward_list<std::string>>();
+            }
+
+            SECTION("std::array")
+            {
+                j1.get<std::array<int, 4>>();
+                j2.get<std::array<unsigned int, 3>>();
+                j3.get<std::array<double, 4>>();
+                j4.get<std::array<bool, 3>>();
+                j5.get<std::array<std::string, 3>>();
+
+                SECTION("std::array is larger than JSON")
+                {
+                    std::array<int, 6> arr6 = {{1, 2, 3, 4, 5, 6}};
+                    CHECK_THROWS_WITH_AS(j1.get_to(arr6), "[json.exception.out_of_range.401] "
+                                         "array index 4 is out of range", json::out_of_range&);
+                }
+
+                SECTION("std::array is smaller than JSON")
+                {
+                    std::array<int, 2> arr2 = {{8, 9}};
+                    j1.get_to(arr2);
+                    CHECK(arr2[0] == 1);
+                    CHECK(arr2[1] == 2);
+                }
+            }
+
+            SECTION("std::valarray")
+            {
+                j1.get<std::valarray<int>>();
+                j2.get<std::valarray<unsigned int>>();
+                j3.get<std::valarray<double>>();
+                j4.get<std::valarray<bool>>();
+                j5.get<std::valarray<std::string>>();
+            }
+
+            SECTION("std::vector")
+            {
+                j1.get<std::vector<int>>();
+                j2.get<std::vector<unsigned int>>();
+                j3.get<std::vector<double>>();
+                j4.get<std::vector<bool>>();
+                j5.get<std::vector<std::string>>();
+            }
+
+            SECTION("std::deque")
+            {
+                j1.get<std::deque<int>>();
+                j2.get<std::deque<unsigned int>>();
+                j2.get<std::deque<double>>();
+                j4.get<std::deque<bool>>();
+                j5.get<std::deque<std::string>>();
+            }
+
+            SECTION("std::set")
+            {
+                j1.get<std::set<int>>();
+                j2.get<std::set<unsigned int>>();
+                j3.get<std::set<double>>();
+                j4.get<std::set<bool>>();
+                j5.get<std::set<std::string>>();
+            }
+
+            SECTION("std::unordered_set")
+            {
+                j1.get<std::unordered_set<int>>();
+                j2.get<std::unordered_set<unsigned int>>();
+                j3.get<std::unordered_set<double>>();
+                j4.get<std::unordered_set<bool>>();
+                j5.get<std::unordered_set<std::string>>();
+            }
+
+            SECTION("std::map (array of pairs)")
+            {
+                std::map<int, int> m{{0, 1}, {1, 2}, {2, 3}};
+                json const j6 = m;
+
+                auto m2 = j6.get<std::map<int, int>>();
+                CHECK(m == m2);
+
+                json const j7 = {0, 1, 2, 3};
+                json const j8 = 2;
+                CHECK_THROWS_WITH_AS((j7.get<std::map<int, int>>()),
+                                     "[json.exception.type_error.302] type must be array, "
+                                     "but is number", json::type_error&);
+                CHECK_THROWS_WITH_AS((j8.get<std::map<int, int>>()),
+                                     "[json.exception.type_error.302] type must be array, "
+                                     "but is number", json::type_error&);
+
+                SECTION("superfluous entries")
+                {
+                    json const j9 = {{0, 1, 2}, {1, 2, 3}, {2, 3, 4}};
+                    m2 = j9.get<std::map<int, int>>();
+                    CHECK(m == m2);
+                }
+            }
+
+            SECTION("std::unordered_map (array of pairs)")
+            {
+                std::unordered_map<int, int> m{{0, 1}, {1, 2}, {2, 3}};
+                json const j6 = m;
+
+                auto m2 = j6.get<std::unordered_map<int, int>>();
+                CHECK(m == m2);
+
+                json const j7 = {0, 1, 2, 3};
+                json const j8 = 2;
+                CHECK_THROWS_WITH_AS((j7.get<std::unordered_map<int, int>>()),
+                                     "[json.exception.type_error.302] type must be array, "
+                                     "but is number", json::type_error&);
+                CHECK_THROWS_WITH_AS((j8.get<std::unordered_map<int, int>>()),
+                                     "[json.exception.type_error.302] type must be array, "
+                                     "but is number", json::type_error&);
+
+                SECTION("superfluous entries")
+                {
+                    json const j9{{0, 1, 2}, {1, 2, 3}, {2, 3, 4}};
+                    m2 = j9.get<std::unordered_map<int, int>>();
+                    CHECK(m == m2);
+                }
+            }
+
+            SECTION("exception in case of a non-object type")
+            {
+                // does type really must be an array? or it rather must not be null?
+                // that's what I thought when other test like this one broke
+                CHECK_THROWS_WITH_AS(
+                    (json().get<std::list<int>>()),
+                    "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+                CHECK_THROWS_WITH_AS(
+                    (json().get<std::vector<int>>()),
+                    "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+                CHECK_THROWS_WITH_AS(
+                    (json().get<std::vector<json>>()),
+                    "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+                CHECK_THROWS_WITH_AS(
+                    (json().get<std::list<json>>()),
+                    "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+                CHECK_THROWS_WITH_AS(
+                    (json().get<std::valarray<int>>()),
+                    "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+                CHECK_THROWS_WITH_AS(
+                    (json().get<std::map<int, int>>()),
+                    "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+            }
+        }
+    }
+}
+
+enum class cards {kreuz, pik, herz, karo};
+
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) - false positive
+NLOHMANN_JSON_SERIALIZE_ENUM(cards,
+{
+    {cards::kreuz, "kreuz"},
+    {cards::pik, "pik"},
+    {cards::pik, "puk"},  // second entry for cards::puk; will not be used
+    {cards::herz, "herz"},
+    {cards::karo, "karo"}
+})
+
+enum TaskState // NOLINT(cert-int09-c,readability-enum-initial-value)
+{
+    TS_STOPPED,
+    TS_RUNNING,
+    TS_COMPLETED,
+    TS_INVALID = -1,
+};
+
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) - false positive
+NLOHMANN_JSON_SERIALIZE_ENUM(TaskState,
+{
+    {TS_INVALID, nullptr},
+    {TS_STOPPED, "stopped"},
+    {TS_RUNNING, "running"},
+    {TS_COMPLETED, "completed"},
+})
+
+TEST_CASE("JSON to enum mapping")
+{
+    SECTION("enum class")
+    {
+        // enum -> json
+        CHECK(json(cards::kreuz) == "kreuz");
+        CHECK(json(cards::pik) == "pik");
+        CHECK(json(cards::herz) == "herz");
+        CHECK(json(cards::karo) == "karo");
+
+        // json -> enum
+        CHECK(cards::kreuz == json("kreuz"));
+        CHECK(cards::pik == json("pik"));
+        CHECK(cards::herz == json("herz"));
+        CHECK(cards::karo == json("karo"));
+
+        // invalid json -> first enum
+        CHECK(cards::kreuz == json("what?").get<cards>());
+    }
+
+    SECTION("traditional enum")
+    {
+        // enum -> json
+        CHECK(json(TS_STOPPED) == "stopped");
+        CHECK(json(TS_RUNNING) == "running");
+        CHECK(json(TS_COMPLETED) == "completed");
+        CHECK(json(TS_INVALID) == json());
+
+        // json -> enum
+        CHECK(TS_STOPPED == json("stopped"));
+        CHECK(TS_RUNNING == json("running"));
+        CHECK(TS_COMPLETED == json("completed"));
+        CHECK(TS_INVALID == json());
+
+        // invalid json -> first enum
+        CHECK(TS_INVALID == json("what?").get<TaskState>());
+    }
+}
+
+
+#ifdef JSON_HAS_CPP_17
+#ifndef JSON_USE_IMPLICIT_CONVERSIONS
+TEST_CASE("std::optional")
+{
+    SECTION("null")
+    {
+        json j_null;
+        std::optional<std::string> opt_null;
+
+        CHECK(json(opt_null) == j_null);
+        CHECK(j_null.get<std::optional<std::string>>() == std::nullopt);
+    }
+
+    SECTION("string")
+    {
+        json j_string = "string";
+        std::optional<std::string> opt_string = "string";
+
+        CHECK(json(opt_string) == j_string);
+        CHECK(std::optional<std::string>(j_string) == opt_string);
+    }
+
+    SECTION("bool")
+    {
+        json j_bool = true;
+        std::optional<bool> opt_bool = true;
+
+        CHECK(json(opt_bool) == j_bool);
+        CHECK(std::optional<bool>(j_bool) == opt_bool);
+    }
+
+    SECTION("number")
+    {
+        json j_number = 1;
+        std::optional<int> opt_int = 1;
+
+        CHECK(json(opt_int) == j_number);
+        CHECK(j_number.get<std::optional<int>>() == opt_int);
+    }
+
+    SECTION("array")
+    {
+        json j_array = {1, 2, nullptr};
+        std::vector<std::optional<int>> opt_array = {{1, 2, std::nullopt}};
+
+        CHECK(json(opt_array) == j_array);
+        CHECK(j_array.get<std::vector<std::optional<int>>>() == opt_array);
+    }
+
+    SECTION("object")
+    {
+        json j_object = {{"one", 1}, {"two", 2}, {"zero", nullptr}};
+        std::map<std::string, std::optional<int>> opt_object {{"one", 1}, {"two", 2}, {"zero", std::nullopt}};
+
+        CHECK(json(opt_object) == j_object);
+        CHECK(std::map<std::string, std::optional<int>>(j_object) == opt_object);
+    }
+}
+#endif
+#endif
+
+#ifdef JSON_HAS_CPP_17
+    #undef JSON_HAS_CPP_17
+#endif
+
+#ifdef JSON_HAS_CPP_14
+    #undef JSON_HAS_CPP_14
+#endif
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-custom-base-class.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-custom-base-class.cpp
new file mode 100644
index 00000000..868a4751
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-custom-base-class.cpp
@@ -0,0 +1,335 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <set>
+#include <sstream>
+#include <string>
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+
+// Test extending nlohmann::json by using a custom base class.
+// Add some metadata to each node and test the behaviour of copy / move
+template<class MetaDataType>
+class json_metadata
+{
+  public:
+    using metadata_t = MetaDataType;
+    metadata_t& metadata()
+    {
+        return m_metadata;
+    }
+    const metadata_t& metadata() const
+    {
+        return m_metadata;
+    }
+  private:
+    metadata_t m_metadata = {};
+};
+
+template<class T>
+using json_with_metadata =
+    nlohmann::basic_json <
+    std::map,
+    std::vector,
+    std::string,
+    bool,
+    std::int64_t,
+    std::uint64_t,
+    double,
+    std::allocator,
+    nlohmann::adl_serializer,
+    std::vector<std::uint8_t>,
+    json_metadata<T>
+    >;
+
+TEST_CASE("JSON Node Metadata")
+{
+    SECTION("type int")
+    {
+        using json = json_with_metadata<int>;
+        json null;
+        auto obj   = json::object();
+        auto array = json::array();
+
+        null.metadata()  = 1;
+        obj.metadata()   = 2;
+        array.metadata() = 3;
+        auto copy = array;
+
+        CHECK(null.metadata()  == 1);
+        CHECK(obj.metadata()   == 2);
+        CHECK(array.metadata() == 3);
+        CHECK(copy.metadata()  == 3);
+    }
+    SECTION("type vector<int>")
+    {
+        using json = json_with_metadata<std::vector<int>>;
+        json value;
+        value.metadata().emplace_back(1);
+        auto copy = value;
+        value.metadata().emplace_back(2);
+
+        CHECK(copy.metadata().size()  == 1);
+        CHECK(copy.metadata().at(0)   == 1);
+        CHECK(value.metadata().size() == 2);
+        CHECK(value.metadata().at(0)  == 1);
+        CHECK(value.metadata().at(1)  == 2);
+    }
+    SECTION("copy ctor")
+    {
+        using json = json_with_metadata<std::vector<int>>;
+        json value;
+        value.metadata().emplace_back(1);
+        value.metadata().emplace_back(2);
+
+        json copy = value;
+
+        CHECK(copy.metadata().size()  == 2);
+        CHECK(copy.metadata().at(0)   == 1);
+        CHECK(copy.metadata().at(1)   == 2);
+        CHECK(value.metadata().size() == 2);
+        CHECK(value.metadata().at(0)  == 1);
+        CHECK(value.metadata().at(1)  == 2);
+
+        value.metadata().clear();
+        CHECK(copy.metadata().size()  == 2);
+        CHECK(value.metadata().size() == 0);
+    }
+    SECTION("move ctor")
+    {
+        using json = json_with_metadata<std::vector<int>>;
+        json value;
+        value.metadata().emplace_back(1);
+        value.metadata().emplace_back(2);
+
+        const json moved = std::move(value);
+
+        CHECK(moved.metadata().size()  == 2);
+        CHECK(moved.metadata().at(0)   == 1);
+        CHECK(moved.metadata().at(1)   == 2);
+    }
+    SECTION("move assign")
+    {
+        using json = json_with_metadata<std::vector<int>>;
+        json value;
+        value.metadata().emplace_back(1);
+        value.metadata().emplace_back(2);
+
+        json moved;
+        moved = std::move(value);
+
+        CHECK(moved.metadata().size()  == 2);
+        CHECK(moved.metadata().at(0)   == 1);
+        CHECK(moved.metadata().at(1)   == 2);
+    }
+    SECTION("copy assign")
+    {
+        using json = json_with_metadata<std::vector<int>>;
+        json value;
+        value.metadata().emplace_back(1);
+        value.metadata().emplace_back(2);
+
+        json copy;
+        copy = value;
+
+        CHECK(copy.metadata().size()  == 2);
+        CHECK(copy.metadata().at(0)   == 1);
+        CHECK(copy.metadata().at(1)   == 2);
+        CHECK(value.metadata().size() == 2);
+        CHECK(value.metadata().at(0)  == 1);
+        CHECK(value.metadata().at(1)  == 2);
+
+        value.metadata().clear();
+        CHECK(copy.metadata().size()  == 2);
+        CHECK(value.metadata().size() == 0);
+    }
+    SECTION("type unique_ptr<int>")
+    {
+        using json = json_with_metadata<std::unique_ptr<int>>;
+        json value;
+        value.metadata().reset(new int(42)); // NOLINT(cppcoreguidelines-owning-memory)
+        auto moved = std::move(value);
+
+        CHECK(moved.metadata() != nullptr);
+        CHECK(*moved.metadata() == 42);
+    }
+    SECTION("type vector<int> in json array")
+    {
+        using json = json_with_metadata<std::vector<int>>;
+        json value;
+        value.metadata().emplace_back(1);
+        value.metadata().emplace_back(2);
+
+        json const array(10, value);
+
+        CHECK(value.metadata().size() == 2);
+        CHECK(value.metadata().at(0)  == 1);
+        CHECK(value.metadata().at(1)  == 2);
+
+        for (const auto& val : array)
+        {
+            CHECK(val.metadata().size() == 2);
+            CHECK(val.metadata().at(0)  == 1);
+            CHECK(val.metadata().at(1)  == 2);
+        }
+    }
+}
+
+// Test extending nlohmann::json by using a custom base class.
+// Add a custom member function template iterating over the whole json tree.
+class visitor_adaptor
+{
+  public:
+    template <class Fnc>
+    void visit(const Fnc& fnc) const;
+  private:
+    template <class Ptr, class Fnc>
+    void do_visit(const Ptr& ptr, const Fnc& fnc) const;
+};
+
+using json_with_visitor_t = nlohmann::basic_json <
+                            std::map,
+                            std::vector,
+                            std::string,
+                            bool,
+                            std::int64_t,
+                            std::uint64_t,
+                            double,
+                            std::allocator,
+                            nlohmann::adl_serializer,
+                            std::vector<std::uint8_t>,
+                            visitor_adaptor
+                            >;
+
+template <class Fnc>
+void visitor_adaptor::visit(const Fnc& fnc) const
+{
+    do_visit(json_with_visitor_t::json_pointer{}, fnc);
+}
+
+template <class Ptr, class Fnc>
+void visitor_adaptor::do_visit(const Ptr& ptr, const Fnc& fnc) const
+{
+    using value_t = nlohmann::detail::value_t;
+    const json_with_visitor_t& json = *static_cast<const json_with_visitor_t*>(this); // NOLINT(cppcoreguidelines-pro-type-static-cast-downcast)
+    switch (json.type())
+    {
+        case value_t::object:
+            for (const auto& entry : json.items())
+            {
+                entry.value().do_visit(ptr / entry.key(), fnc);
+            }
+            break;
+        case value_t::array:
+            for (std::size_t i = 0; i < json.size(); ++i)
+            {
+                json.at(i).do_visit(ptr / std::to_string(i), fnc);
+            }
+            break;
+        case value_t::discarded:
+            break;
+        case value_t::null:
+        case value_t::string:
+        case value_t::boolean:
+        case value_t::number_integer:
+        case value_t::number_unsigned:
+        case value_t::number_float:
+        case value_t::binary:
+        default:
+            fnc(ptr, json);
+    }
+}
+
+TEST_CASE("JSON Visit Node")
+{
+    json_with_visitor_t json;
+    json["null"];
+    json["int"]  = -1;
+    json["uint"] = 1U;
+    json["float"] = 1.0;
+    json["boolean"] = true;
+    json["string"] = "string";
+    json["array"].push_back(0);
+    json["array"].push_back(1);
+    json["array"].push_back(json);
+
+    std::set<std::string> expected
+    {
+        "/null - null - null",
+        "/int - number_integer - -1",
+        "/uint - number_unsigned - 1",
+        "/float - number_float - 1.0",
+        "/boolean - boolean - true",
+        "/string - string - \"string\"",
+        "/array/0 - number_integer - 0",
+        "/array/1 - number_integer - 1",
+
+        "/array/2/null - null - null",
+        "/array/2/int - number_integer - -1",
+        "/array/2/uint - number_unsigned - 1",
+        "/array/2/float - number_float - 1.0",
+        "/array/2/boolean - boolean - true",
+        "/array/2/string - string - \"string\"",
+        "/array/2/array/0 - number_integer - 0",
+        "/array/2/array/1 - number_integer - 1"
+    };
+
+    json.visit(
+        [&](const json_with_visitor_t::json_pointer & p,
+            const json_with_visitor_t& j)
+    {
+        std::stringstream str;
+        str << p.to_string() << " - " ;
+        using value_t = nlohmann::detail::value_t;
+        switch (j.type())
+        {
+            case value_t::object:
+                str << "object";
+                break;
+            case value_t::array:
+                str << "array";
+                break;
+            case value_t::discarded:
+                str << "discarded";
+                break;
+            case value_t::null:
+                str << "null";
+                break;
+            case value_t::string:
+                str << "string";
+                break;
+            case value_t::boolean:
+                str << "boolean";
+                break;
+            case value_t::number_integer:
+                str << "number_integer";
+                break;
+            case value_t::number_unsigned:
+                str << "number_unsigned";
+                break;
+            case value_t::number_float:
+                str << "number_float";
+                break;
+            case value_t::binary:
+                str << "binary";
+                break;
+            default:
+                str << "error";
+                break;
+        }
+        str << " - "  << j.dump();
+        CHECK(json.at(p) == j);
+        INFO(str.str());
+        CHECK(expected.count(str.str()) == 1);
+        expected.erase(str.str());
+    }
+    );
+    CHECK(expected.empty());
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-deserialization.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-deserialization.cpp
new file mode 100644
index 00000000..602a3ee7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-deserialization.cpp
@@ -0,0 +1,1192 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <iostream>
+#include <iterator>
+#include <sstream>
+#include <valarray>
+
+
+namespace
+{
+struct SaxEventLogger : public nlohmann::json_sax<json>
+{
+    bool null() override
+    {
+        events.emplace_back("null()");
+        return true;
+    }
+
+    bool boolean(bool val) override
+    {
+        events.emplace_back(val ? "boolean(true)" : "boolean(false)");
+        return true;
+    }
+
+    bool number_integer(json::number_integer_t val) override
+    {
+        events.push_back("number_integer(" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_unsigned(json::number_unsigned_t val) override
+    {
+        events.push_back("number_unsigned(" + std::to_string(val) + ")");
+        return true;
+    }
+
+    bool number_float(json::number_float_t /*val*/, const std::string& s) override
+    {
+        events.push_back("number_float(" + s + ")");
+        return true;
+    }
+
+    bool string(std::string& val) override
+    {
+        events.push_back("string(" + val + ")");
+        return true;
+    }
+
+    bool binary(json::binary_t& val) override
+    {
+        std::string binary_contents = "binary(";
+        std::string comma_space;
+        for (auto b : val)
+        {
+            binary_contents.append(comma_space);
+            binary_contents.append(std::to_string(static_cast<int>(b)));
+            comma_space = ", ";
+        }
+        binary_contents.append(")");
+        events.push_back(binary_contents);
+        return true;
+    }
+
+    bool start_object(std::size_t elements) override
+    {
+        if (elements == static_cast<std::size_t>(-1))
+        {
+            events.emplace_back("start_object()");
+        }
+        else
+        {
+            events.push_back("start_object(" + std::to_string(elements) + ")");
+        }
+        return true;
+    }
+
+    bool key(std::string& val) override
+    {
+        events.push_back("key(" + val + ")");
+        return true;
+    }
+
+    bool end_object() override
+    {
+        events.emplace_back("end_object()");
+        return true;
+    }
+
+    bool start_array(std::size_t elements) override
+    {
+        if (elements == static_cast<std::size_t>(-1))
+        {
+            events.emplace_back("start_array()");
+        }
+        else
+        {
+            events.push_back("start_array(" + std::to_string(elements) + ")");
+        }
+        return true;
+    }
+
+    bool end_array() override
+    {
+        events.emplace_back("end_array()");
+        return true;
+    }
+
+    bool parse_error(std::size_t position, const std::string& /*last_token*/, const json::exception& /*ex*/) override
+    {
+        events.push_back("parse_error(" + std::to_string(position) + ")");
+        return false;
+    }
+
+    std::vector<std::string> events {}; // NOLINT(readability-redundant-member-init)
+};
+
+struct SaxEventLoggerExitAfterStartObject : public SaxEventLogger
+{
+    bool start_object(std::size_t elements) override
+    {
+        if (elements == static_cast<std::size_t>(-1))
+        {
+            events.emplace_back("start_object()");
+        }
+        else
+        {
+            events.push_back("start_object(" + std::to_string(elements) + ")");
+        }
+        return false;
+    }
+};
+
+struct SaxEventLoggerExitAfterKey : public SaxEventLogger
+{
+    bool key(std::string& val) override
+    {
+        events.push_back("key(" + val + ")");
+        return false;
+    }
+};
+
+struct SaxEventLoggerExitAfterStartArray : public SaxEventLogger
+{
+    bool start_array(std::size_t elements) override
+    {
+        if (elements == static_cast<std::size_t>(-1))
+        {
+            events.emplace_back("start_array()");
+        }
+        else
+        {
+            events.push_back("start_array(" + std::to_string(elements) + ")");
+        }
+        return false;
+    }
+};
+
+template <typename T>
+class proxy_iterator
+{
+  public:
+    using iterator = typename T::iterator;
+    using value_type = typename std::iterator_traits<iterator>::value_type;
+    using reference = typename std::iterator_traits<iterator>::reference;
+    using pointer = typename std::iterator_traits<iterator>::pointer;
+    using difference_type =
+        typename std::iterator_traits<iterator>::difference_type;
+    using iterator_category = std::input_iterator_tag;
+
+    proxy_iterator() = default;
+    explicit proxy_iterator(iterator& it) : m_it(std::addressof(it)) {}
+
+    proxy_iterator& operator++()
+    {
+        ++*m_it;
+        return *this;
+    }
+
+    proxy_iterator& operator--()
+    {
+        --*m_it;
+        return *this;
+    }
+
+    bool operator==(const proxy_iterator& rhs) const
+    {
+        return (m_it && rhs.m_it) ? (*m_it == *rhs.m_it) : (m_it == rhs.m_it);
+    }
+
+    bool operator!=(const proxy_iterator& rhs) const
+    {
+        return !(*this == rhs);
+    }
+
+    reference operator*() const
+    {
+        return **m_it;
+    }
+
+  private:
+    iterator* m_it = nullptr;
+};
+} // namespace
+
+TEST_CASE("deserialization")
+{
+    SECTION("successful deserialization")
+    {
+        SECTION("stream")
+        {
+            std::stringstream ss1;
+            std::stringstream ss2;
+            std::stringstream ss3;
+            ss1 << R"(["foo",1,2,3,false,{"one":1}])";
+            ss2 << R"(["foo",1,2,3,false,{"one":1}])";
+            ss3 << R"(["foo",1,2,3,false,{"one":1}])";
+            json j = json::parse(ss1);
+            CHECK(json::accept(ss2));
+            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+
+            SaxEventLogger l;
+            CHECK(json::sax_parse(ss3, &l));
+            CHECK(l.events.size() == 11);
+            CHECK(l.events == std::vector<std::string>(
+            {
+                "start_array()", "string(foo)", "number_unsigned(1)",
+                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                "start_object()", "key(one)", "number_unsigned(1)",
+                "end_object()", "end_array()"
+            }));
+        }
+
+        SECTION("string literal")
+        {
+            const auto* s = R"(["foo",1,2,3,false,{"one":1}])";
+            json j = json::parse(s);
+            CHECK(json::accept(s));
+            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+
+            SaxEventLogger l;
+            CHECK(json::sax_parse(s, &l));
+            CHECK(l.events.size() == 11);
+            CHECK(l.events == std::vector<std::string>(
+            {
+                "start_array()", "string(foo)", "number_unsigned(1)",
+                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                "start_object()", "key(one)", "number_unsigned(1)",
+                "end_object()", "end_array()"
+            }));
+        }
+
+        SECTION("string_t")
+        {
+            json::string_t const s = R"(["foo",1,2,3,false,{"one":1}])";
+            json j = json::parse(s);
+            CHECK(json::accept(s));
+            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+
+            SaxEventLogger l;
+            CHECK(json::sax_parse(s, &l));
+            CHECK(l.events.size() == 11);
+            CHECK(l.events == std::vector<std::string>(
+            {
+                "start_array()", "string(foo)", "number_unsigned(1)",
+                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                "start_object()", "key(one)", "number_unsigned(1)",
+                "end_object()", "end_array()"
+            }));
+        }
+
+        SECTION("operator<<")
+        {
+            std::stringstream ss;
+            ss << R"(["foo",1,2,3,false,{"one":1}])";
+            json j;
+            j << ss;
+            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+        }
+
+        SECTION("operator>>")
+        {
+            std::stringstream ss;
+            ss << R"(["foo",1,2,3,false,{"one":1}])";
+            json j;
+            ss >> j;
+            CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+        }
+
+        SECTION("user-defined string literal")
+        {
+            CHECK("[\"foo\",1,2,3,false,{\"one\":1}]"_json == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
+        }
+    }
+
+    SECTION("unsuccessful deserialization")
+    {
+        SECTION("stream")
+        {
+            std::stringstream ss1;
+            std::stringstream ss3;
+            std::stringstream ss4;
+            std::stringstream ss5;
+            ss1 << R"(["foo",1,2,3,false,{"one":1})";
+            ss3 << R"(["foo",1,2,3,false,{"one":1})";
+            ss4 << R"(["foo",1,2,3,false,{"one":1})";
+            ss5 << R"(["foo",1,2,3,false,{"one":1})";
+
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::parse(ss1), "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+            CHECK(!json::accept(ss3));
+
+            json j_error;
+            CHECK_NOTHROW(j_error = json::parse(ss4, nullptr, false));
+            CHECK(j_error.is_discarded());
+
+            SaxEventLogger l;
+            CHECK(!json::sax_parse(ss5, &l));
+            CHECK(l.events.size() == 11);
+            CHECK(l.events == std::vector<std::string>(
+            {
+                "start_array()", "string(foo)", "number_unsigned(1)",
+                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                "start_object()", "key(one)", "number_unsigned(1)",
+                "end_object()", "parse_error(29)"
+            }));
+        }
+
+        SECTION("string")
+        {
+            json::string_t const s = R"(["foo",1,2,3,false,{"one":1})";
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::parse(s), "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+            CHECK(!json::accept(s));
+
+            json j_error;
+            CHECK_NOTHROW(j_error = json::parse(s, nullptr, false));
+            CHECK(j_error.is_discarded());
+
+            SaxEventLogger l;
+            CHECK(!json::sax_parse(s, &l));
+            CHECK(l.events.size() == 11);
+            CHECK(l.events == std::vector<std::string>(
+            {
+                "start_array()", "string(foo)", "number_unsigned(1)",
+                "number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
+                "start_object()", "key(one)", "number_unsigned(1)",
+                "end_object()", "parse_error(29)"
+            }));
+
+            const char* string = nullptr;
+            CHECK_THROWS_WITH_AS(_ = json::parse(string), "[json.exception.parse_error.101] parse error: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::parse(nullptr), "[json.exception.parse_error.101] parse error: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+        }
+
+        SECTION("operator<<")
+        {
+            std::stringstream ss;
+            ss << R"(["foo",1,2,3,false,{"one":1})";
+            json j;
+            CHECK_THROWS_WITH_AS(j << ss, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+        }
+
+        SECTION("operator>>")
+        {
+            std::stringstream ss;
+            ss << R"(["foo",1,2,3,false,{"one":1})";
+            json j;
+            CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+        }
+
+        SECTION("user-defined string literal")
+        {
+            CHECK_THROWS_WITH_AS("[\"foo\",1,2,3,false,{\"one\":1}"_json, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
+        }
+    }
+
+    SECTION("contiguous containers")
+    {
+        SECTION("directly")
+        {
+            SECTION("from std::vector")
+            {
+                std::vector<uint8_t> const v = {'t', 'r', 'u', 'e'};
+                CHECK(json::parse(v) == json(true));
+                CHECK(json::accept(v));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(v, &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("from std::array")
+            {
+                std::array<uint8_t, 5> const v { {'t', 'r', 'u', 'e'} };
+                CHECK(json::parse(v) == json(true));
+                CHECK(json::accept(v));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(v, &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("from array")
+            {
+                uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                CHECK(json::parse(v) == json(true));
+                CHECK(json::accept(v));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(v, &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("from chars")
+            {
+                auto* v = new uint8_t[5]; // NOLINT(cppcoreguidelines-owning-memory)
+                v[0] = 't';
+                v[1] = 'r';
+                v[2] = 'u';
+                v[3] = 'e';
+                v[4] = '\0';
+                CHECK(json::parse(v) == json(true));
+                CHECK(json::accept(v));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(v, &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+
+                delete[] v; // NOLINT(cppcoreguidelines-owning-memory)
+            }
+
+            SECTION("from std::string")
+            {
+                std::string const v = {'t', 'r', 'u', 'e'};
+                CHECK(json::parse(v) == json(true));
+                CHECK(json::accept(v));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(v, &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("from std::initializer_list")
+            {
+                std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'};
+                CHECK(json::parse(v) == json(true));
+                CHECK(json::accept(v));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(v, &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("empty container")
+            {
+                std::vector<uint8_t> const v;
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(v), json::parse_error&);
+                CHECK(!json::accept(v));
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(v, &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(1)"}));
+            }
+        }
+
+        SECTION("via iterator range")
+        {
+            SECTION("from std::vector")
+            {
+                std::vector<uint8_t> v = {'t', 'r', 'u', 'e'};
+                CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
+                CHECK(json::accept(std::begin(v), std::end(v)));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+
+            }
+
+            SECTION("from std::array")
+            {
+                std::array<uint8_t, 5> v { {'t', 'r', 'u', 'e'} };
+                CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
+                CHECK(json::accept(std::begin(v), std::end(v)));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("from array")
+            {
+                uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
+                CHECK(json::accept(std::begin(v), std::end(v)));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("from std::string")
+            {
+                std::string v = {'t', 'r', 'u', 'e'};
+                CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
+                CHECK(json::accept(std::begin(v), std::end(v)));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("from std::initializer_list")
+            {
+                std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'};
+                CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
+                CHECK(json::accept(std::begin(v), std::end(v)));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("from std::valarray")
+            {
+                std::valarray<uint8_t> v = {'t', 'r', 'u', 'e'};
+                CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
+                CHECK(json::accept(std::begin(v), std::end(v)));
+
+                SaxEventLogger l;
+                CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+            }
+
+            SECTION("with empty range")
+            {
+                std::vector<uint8_t> v;
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(1)"}));
+            }
+
+            SECTION("iterator_input_adapter advances iterators correctly")
+            {
+                using nlohmann::json;
+                using nlohmann::detail::input_format_t;
+                using nlohmann::detail::json_sax_dom_parser;
+                using proxy = proxy_iterator<std::string>;
+
+                std::string str1 = "[1]";
+                std::string str2 = "[2]";
+                std::string str = str1 + str2;
+
+                auto first = str.begin();
+                auto last = str.end();
+                json j;
+                json_sax_dom_parser<json, nlohmann::detail::string_input_adapter_type> sax(j, true);
+
+                CHECK(json::sax_parse(proxy(first), proxy(last), &sax,
+                                      input_format_t::json, false));
+                CHECK(j.dump() == str1);
+                CHECK(std::string(first, last) == str2);
+            }
+        }
+
+        // these cases are required for 100% line coverage
+        SECTION("error cases")
+        {
+            SECTION("case 1")
+            {
+                std::array<std::uint8_t, 9> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u'}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(10)"}));
+            }
+
+            SECTION("case 2")
+            {
+                std::array<std::uint8_t, 10> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u', '1'}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(11)"}));
+            }
+
+            SECTION("case 3")
+            {
+                std::array<std::uint8_t, 17> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u', '1', '1', '1', '1', '1', '1', '1', '1'}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(18)"}));
+            }
+
+            SECTION("case 4")
+            {
+                std::array<std::uint8_t, 17> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', 'u', '1', '1', '1', '1', '1', '1', '1', '1', '\\'}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(18)"}));
+            }
+
+            SECTION("case 5")
+            {
+                std::array<std::uint8_t, 3> v = {{'\"', 0x7F, 0xC1}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(3)"}));
+            }
+
+            SECTION("case 6")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xDF, 0x7F}};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::parse(std::begin(v), std::end(v)), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: ill-formed UTF-8 byte; last read: '\"\x7f\xdf\x7f'", json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 7")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xDF, 0xC0}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 8")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xE0, 0x9F}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 9")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xEF, 0xC0}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 10")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xED, 0x7F}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 11")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF0, 0x8F}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 12")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF0, 0xC0}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 13")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF3, 0x7F}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 14")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF3, 0xC0}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 15")
+            {
+                std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF4, 0x7F}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 1);
+                CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
+            }
+
+            SECTION("case 16")
+            {
+                std::array<std::uint8_t, 6> v = {{'{', '\"', '\"', ':', '1', '1'}};
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
+                CHECK(!json::accept(std::begin(v), std::end(v)));
+
+                json j_error;
+                CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
+                CHECK(j_error.is_discarded());
+
+                SaxEventLogger l;
+                CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
+                CHECK(l.events.size() == 4);
+                CHECK(l.events == std::vector<std::string>(
+                {
+                    "start_object()", "key()", "number_unsigned(11)",
+                    "parse_error(7)"
+                }));
+            }
+        }
+    }
+
+    SECTION("ignoring byte-order marks")
+    {
+        std::string bom = "\xEF\xBB\xBF";
+
+        SECTION("BOM only")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::parse(bom), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+
+            CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom)), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+
+            SaxEventLogger l;
+            CHECK(!json::sax_parse(bom, &l));
+            CHECK(l.events.size() == 1);
+            CHECK(l.events == std::vector<std::string>(
+            {
+                "parse_error(4)"
+            }));
+        }
+
+        SECTION("BOM and content")
+        {
+            CHECK(json::parse(bom + "1") == 1);
+            CHECK(json::parse(std::istringstream(bom + "1")) == 1);
+
+            SaxEventLogger l1;
+            SaxEventLogger l2;
+            CHECK(json::sax_parse(std::istringstream(bom + "1"), &l1));
+            CHECK(json::sax_parse(bom + "1", &l2));
+            CHECK(l1.events.size() == 1);
+            CHECK(l1.events == std::vector<std::string>(
+            {
+                "number_unsigned(1)"
+            }));
+            CHECK(l2.events.size() == 1);
+            CHECK(l2.events == std::vector<std::string>(
+            {
+                "number_unsigned(1)"
+            }));
+        }
+
+        SECTION("2 byte of BOM")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::parse(bom.substr(0, 2)), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF\xBB'", json::parse_error&);
+
+            CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom.substr(0, 2))), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF\xBB'", json::parse_error&);
+
+            SaxEventLogger l1;
+            SaxEventLogger l2;
+            CHECK(!json::sax_parse(std::istringstream(bom.substr(0, 2)), &l1));
+            CHECK(!json::sax_parse(bom.substr(0, 2), &l2));
+            CHECK(l1.events.size() == 1);
+            CHECK(l1.events == std::vector<std::string>(
+            {
+                "parse_error(3)"
+            }));
+            CHECK(l2.events.size() == 1);
+            CHECK(l2.events == std::vector<std::string>(
+            {
+                "parse_error(3)"
+            }));
+        }
+
+        SECTION("1 byte of BOM")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::parse(bom.substr(0, 1)), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF'", json::parse_error&);
+
+            CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom.substr(0, 1))), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF'", json::parse_error&);
+
+            SaxEventLogger l1;
+            SaxEventLogger l2;
+            CHECK(!json::sax_parse(std::istringstream(bom.substr(0, 1)), &l1));
+            CHECK(!json::sax_parse(bom.substr(0, 1), &l2));
+            CHECK(l1.events.size() == 1);
+            CHECK(l1.events == std::vector<std::string>(
+            {
+                "parse_error(2)"
+            }));
+            CHECK(l2.events.size() == 1);
+            CHECK(l2.events == std::vector<std::string>(
+            {
+                "parse_error(2)"
+            }));
+        }
+
+        SECTION("variations")
+        {
+            // calculate variations of each byte of the BOM to make sure
+            // that the BOM and only the BOM is skipped
+            for (int i0 = -1; i0 < 2; ++i0)
+            {
+                for (int i1 = -1; i1 < 2; ++i1)
+                {
+                    for (int i2 = -1; i2 < 2; ++i2)
+                    {
+                        // debug output for the variations
+                        CAPTURE(i0)
+                        CAPTURE(i1)
+                        CAPTURE(i2)
+
+                        std::string s;
+                        s.push_back(static_cast<char>(bom[0] + i0));
+                        s.push_back(static_cast<char>(bom[1] + i1));
+                        s.push_back(static_cast<char>(bom[2] + i2));
+
+                        if (i0 == 0 && i1 == 0 && i2 == 0)
+                        {
+                            // without any variation, we skip the BOM
+                            CHECK(json::parse(s + "null") == json());
+                            CHECK(json::parse(std::istringstream(s + "null")) == json());
+
+                            SaxEventLogger l;
+                            CHECK(json::sax_parse(s + "null", &l));
+                            CHECK(l.events.size() == 1);
+                            CHECK(l.events == std::vector<std::string>(
+                            {
+                                "null()"
+                            }));
+                        }
+                        else
+                        {
+                            // any variation is an error
+                            json _;
+                            CHECK_THROWS_AS(_ = json::parse(s + "null"), json::parse_error&);
+                            CHECK_THROWS_AS(_ = json::parse(std::istringstream(s + "null")), json::parse_error&);
+
+                            SaxEventLogger l;
+                            CHECK(!json::sax_parse(s + "null", &l));
+                            CHECK(l.events.size() == 1);
+
+                            if (i0 != 0)
+                            {
+                                CHECK(l.events == std::vector<std::string>(
+                                {
+                                    "parse_error(1)"
+                                }));
+                            }
+                            else if (i1 != 0)
+                            {
+                                CHECK(l.events == std::vector<std::string>(
+                                {
+                                    "parse_error(2)"
+                                }));
+                            }
+                            else
+                            {
+                                CHECK(l.events == std::vector<std::string>(
+                                {
+                                    "parse_error(3)"
+                                }));
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        SECTION("preserve state after parsing")
+        {
+            std::istringstream s(bom + "123 456");
+            json j;
+            j << s;
+            CHECK(j == 123);
+            j << s;
+            CHECK(j == 456);
+        }
+    }
+
+    SECTION("SAX and early abort")
+    {
+        std::string const s = R"([1, ["string", 43.12], null, {"key1": true, "key2": false}])";
+
+        SaxEventLogger default_logger;
+        SaxEventLoggerExitAfterStartObject exit_after_start_object;
+        SaxEventLoggerExitAfterKey exit_after_key;
+        SaxEventLoggerExitAfterStartArray exit_after_start_array;
+
+        json::sax_parse(s, &default_logger);
+        CHECK(default_logger.events.size() == 14);
+        CHECK(default_logger.events == std::vector<std::string>(
+        {
+            "start_array()", "number_unsigned(1)", "start_array()",
+            "string(string)", "number_float(43.12)", "end_array()", "null()",
+            "start_object()", "key(key1)", "boolean(true)", "key(key2)",
+            "boolean(false)", "end_object()", "end_array()"
+        }));
+
+        json::sax_parse(s, &exit_after_start_object);
+        CHECK(exit_after_start_object.events.size() == 8);
+        CHECK(exit_after_start_object.events == std::vector<std::string>(
+        {
+            "start_array()", "number_unsigned(1)", "start_array()",
+            "string(string)", "number_float(43.12)", "end_array()", "null()",
+            "start_object()"
+        }));
+
+        json::sax_parse(s, &exit_after_key);
+        CHECK(exit_after_key.events.size() == 9);
+        CHECK(exit_after_key.events == std::vector<std::string>(
+        {
+            "start_array()", "number_unsigned(1)", "start_array()",
+            "string(string)", "number_float(43.12)", "end_array()", "null()",
+            "start_object()", "key(key1)"
+        }));
+
+        json::sax_parse(s, &exit_after_start_array);
+        CHECK(exit_after_start_array.events.size() == 1);
+        CHECK(exit_after_start_array.events == std::vector<std::string>(
+        {
+            "start_array()"
+        }));
+    }
+
+    SECTION("JSON Lines")
+    {
+        SECTION("Example file")
+        {
+            std::stringstream ss;
+            ss << R"({"name": "Gilbert", "wins": [["straight", "7♣"], ["one pair", "10♥"]]}
+                    {"name": "Alexa", "wins": [["two pair", "4♠"], ["two pair", "9♠"]]}
+                    {"name": "May", "wins": []}
+                    {"name": "Deloise", "wins": [["three of a kind", "5♣"]]}
+)";
+
+            std::string line;
+            int object_count = 0;
+            while (std::getline(ss, line))
+            {
+                ++object_count;
+                CHECK(json::accept(line));
+            }
+
+            CHECK(object_count == 4);
+        }
+
+        SECTION("Example file without trailing newline")
+        {
+            std::stringstream ss;
+            ss << R"({"name": "Gilbert", "wins": [["straight", "7♣"], ["one pair", "10♥"]]}
+                    {"name": "Alexa", "wins": [["two pair", "4♠"], ["two pair", "9♠"]]}
+                    {"name": "May", "wins": []}
+                    {"name": "Deloise", "wins": [["three of a kind", "5♣"]]})";
+
+            std::string line;
+            int object_count = 0;
+            while (std::getline(ss, line))
+            {
+                ++object_count;
+                CHECK(json::accept(line));
+            }
+
+            CHECK(object_count == 4);
+        }
+    }
+}
+
+// select the types to test - char8_t is only available in C++20
+#define TYPE_LIST(...) __VA_ARGS__
+#ifdef JSON_HAS_CPP_20
+    #define ASCII_TYPES TYPE_LIST(char, wchar_t, char16_t, char32_t, char8_t)
+#else
+    #define ASCII_TYPES TYPE_LIST(char, wchar_t, char16_t, char32_t)
+#endif
+
+TEST_CASE_TEMPLATE("deserialization of different character types (ASCII)", T, ASCII_TYPES) // NOLINT(readability-math-missing-parentheses)
+{
+    std::vector<T> const v = {'t', 'r', 'u', 'e'};
+    CHECK(json::parse(v) == json(true));
+    CHECK(json::accept(v));
+
+    SaxEventLogger l;
+    CHECK(json::sax_parse(v, &l));
+    CHECK(l.events.size() == 1);
+    CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
+}
+
+TEST_CASE_TEMPLATE("deserialization of different character types (UTF-8)", T, char, unsigned char, std::uint8_t) // NOLINT(readability-math-missing-parentheses)
+{
+    // a star emoji
+    std::vector<T> const v = {'"', static_cast<T>(0xe2u), static_cast<T>(0xadu), static_cast<T>(0x90u), static_cast<T>(0xefu), static_cast<T>(0xb8u), static_cast<T>(0x8fu), '"'};
+    CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
+    CHECK(json::accept(v));
+
+    SaxEventLogger l;
+    CHECK(json::sax_parse(v, &l));
+    CHECK(l.events.size() == 1);
+}
+
+TEST_CASE_TEMPLATE("deserialization of different character types (UTF-16)", T, char16_t) // NOLINT(readability-math-missing-parentheses)
+{
+    // a star emoji
+    std::vector<T> const v = {static_cast<T>('"'), static_cast<T>(0x2b50), static_cast<T>(0xfe0f), static_cast<T>('"')};
+    CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
+    CHECK(json::accept(v));
+
+    SaxEventLogger l;
+    CHECK(json::sax_parse(v, &l));
+    CHECK(l.events.size() == 1);
+}
+
+TEST_CASE_TEMPLATE("deserialization of different character types (UTF-32)", T, char32_t) // NOLINT(readability-math-missing-parentheses)
+{
+    // a star emoji
+    std::vector<T> const v = {static_cast<T>('"'), static_cast<T>(0x2b50), static_cast<T>(0xfe0f), static_cast<T>('"')};
+    CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
+    CHECK(json::accept(v));
+
+    SaxEventLogger l;
+    CHECK(json::sax_parse(v, &l));
+    CHECK(l.events.size() == 1);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-diagnostics.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-diagnostics.cpp
new file mode 100644
index 00000000..472d11e2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-diagnostics.cpp
@@ -0,0 +1,265 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#ifdef JSON_DIAGNOSTICS
+    #undef JSON_DIAGNOSTICS
+#endif
+
+#define JSON_DIAGNOSTICS 1
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("Better diagnostics")
+{
+    SECTION("empty JSON Pointer")
+    {
+        json const j = 1;
+        std::string s;
+        CHECK_THROWS_WITH_AS(s = j.get<std::string>(), "[json.exception.type_error.302] type must be string, but is number", json::type_error);
+    }
+
+    SECTION("invalid type")
+    {
+        json j;
+        j["a"]["b"]["c"] = 1;
+        std::string s;
+        CHECK_THROWS_WITH_AS(s = j["a"]["b"]["c"].get<std::string>(), "[json.exception.type_error.302] (/a/b/c) type must be string, but is number", json::type_error);
+    }
+
+    SECTION("missing key")
+    {
+        json j;
+        j["object"]["object"] = true;
+        CHECK_THROWS_WITH_AS(j["object"].at("not_found"), "[json.exception.out_of_range.403] (/object) key 'not_found' not found", json::out_of_range);
+    }
+
+    SECTION("array index out of range")
+    {
+        json j;
+        j["array"][4] = true;
+        CHECK_THROWS_WITH_AS(j["array"].at(5), "[json.exception.out_of_range.401] (/array) array index 5 is out of range", json::out_of_range);
+    }
+
+    SECTION("array index at wrong type")
+    {
+        json j;
+        j["array"][4] = true;
+        CHECK_THROWS_WITH_AS(j["array"][4][5], "[json.exception.type_error.305] (/array/4) cannot use operator[] with a numeric argument with boolean", json::type_error);
+    }
+
+    SECTION("wrong iterator")
+    {
+        json j;
+        j["array"] = json::array();
+        CHECK_THROWS_WITH_AS(j["array"].erase(j.begin()), "[json.exception.invalid_iterator.202] (/array) iterator does not fit current value", json::invalid_iterator);
+    }
+
+    SECTION("JSON Pointer escaping")
+    {
+        json j;
+        j["a/b"]["m~n"] = 1;
+        std::string s;
+        CHECK_THROWS_WITH_AS(s = j["a/b"]["m~n"].get<std::string>(), "[json.exception.type_error.302] (/a~1b/m~0n) type must be string, but is number", json::type_error);
+    }
+
+    SECTION("Parse error")
+    {
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::parse(""), "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error);
+    }
+
+    SECTION("Wrong type in update()")
+    {
+        json j = {{"foo", "bar"}};
+        json k = {{"bla", 1}};
+
+        CHECK_THROWS_WITH_AS(j.update(k["bla"].begin(), k["bla"].end()), "[json.exception.type_error.312] (/bla) cannot use update() with number", json::type_error);
+        CHECK_THROWS_WITH_AS(j.update(k["bla"]), "[json.exception.type_error.312] (/bla) cannot use update() with number", json::type_error);
+    }
+}
+
+TEST_CASE("Regression tests for extended diagnostics")
+{
+    SECTION("Regression test for https://github.com/nlohmann/json/pull/2562#pullrequestreview-574858448")
+    {
+        CHECK_THROWS_WITH_AS(json({"0", "0"})[1].get<int>(), "[json.exception.type_error.302] (/1) type must be number, but is string", json::type_error);
+        CHECK_THROWS_WITH_AS(json({"0", "1"})[1].get<int>(), "[json.exception.type_error.302] (/1) type must be number, but is string", json::type_error);
+    }
+
+    SECTION("Regression test for https://github.com/nlohmann/json/pull/2562/files/380a613f2b5d32425021129cd1f371ddcfd54ddf#r563259793")
+    {
+        json j;
+        j["/foo"] = {1, 2, 3};
+        CHECK_THROWS_WITH_AS(j.unflatten(), "[json.exception.type_error.315] (/~1foo) values in object must be primitive", json::type_error);
+    }
+
+    SECTION("Regression test for issue #2838 - Assertion failure when inserting into arrays with JSON_DIAGNOSTICS set")
+    {
+        // void push_back(basic_json&& val)
+        {
+            json j_arr = json::array();
+            j_arr.push_back(json::object());
+            j_arr.push_back(json::object());
+            j_arr.push_back(json::object());
+            j_arr.push_back(json::object());
+            json j_obj = json::object();
+            j_obj["key"] = j_arr;
+        }
+
+        // void push_back(const basic_json& val)
+        {
+            json j_arr = json::array();
+            auto object = json::object();
+            j_arr.push_back(object);
+            j_arr.push_back(object);
+            j_arr.push_back(object);
+            j_arr.push_back(object);
+            json j_obj = json::object();
+            j_obj["key"] = j_arr;
+        }
+
+        // reference emplace_back(Args&& ... args)
+        {
+            json j_arr = json::array();
+            j_arr.emplace_back(json::object());
+            j_arr.emplace_back(json::object());
+            j_arr.emplace_back(json::object());
+            j_arr.emplace_back(json::object());
+            json j_obj = json::object();
+            j_obj["key"] = j_arr;
+        }
+
+        // iterator insert(const_iterator pos, const basic_json& val)
+        {
+            json j_arr = json::array();
+            j_arr.insert(j_arr.begin(), json::object());
+            j_arr.insert(j_arr.begin(), json::object());
+            j_arr.insert(j_arr.begin(), json::object());
+            j_arr.insert(j_arr.begin(), json::object());
+            json j_obj = json::object();
+            j_obj["key"] = j_arr;
+        }
+
+        // iterator insert(const_iterator pos, size_type cnt, const basic_json& val)
+        {
+            json j_arr = json::array();
+            j_arr.insert(j_arr.begin(), 2, json::object());
+            json j_obj = json::object();
+            j_obj["key"] = j_arr;
+        }
+
+        // iterator insert(const_iterator pos, const_iterator first, const_iterator last)
+        {
+            json j_arr = json::array();
+            json j_objects = {json::object(), json::object()};
+            j_arr.insert(j_arr.begin(), j_objects.begin(), j_objects.end());
+            json j_obj = json::object();
+            j_obj["key"] = j_arr;
+        }
+    }
+
+    SECTION("Regression test for issue #2962 - JSON_DIAGNOSTICS assertion for ordered_json")
+    {
+        nlohmann::ordered_json j;
+        nlohmann::ordered_json j2;
+        const std::string value;
+        j["first"] = value;
+        j["second"] = value;
+        j2["something"] = j;
+    }
+
+    SECTION("Regression test for issue #3007 - Parent pointers properly set when using update()")
+    {
+        // void update(const_reference j)
+        {
+            json j = json::object();
+
+            {
+                json j2 = json::object();
+                j2["one"] = 1;
+
+                j.update(j2);
+            }
+
+            // Must call operator[] on const element, otherwise m_parent gets updated.
+            auto const& constJ = j;
+            CHECK_THROWS_WITH_AS(constJ["one"].at(0), "[json.exception.type_error.304] (/one) cannot use at() with number", json::type_error);
+        }
+
+        // void update(const_iterator first, const_iterator last)
+        {
+            json j = json::object();
+
+            {
+                json j2 = json::object();
+                j2["one"] = 1;
+
+                j.update(j2.begin(), j2.end());
+            }
+
+            // Must call operator[] on const element, otherwise m_parent gets updated.
+            auto const& constJ = j;
+            CHECK_THROWS_WITH_AS(constJ["one"].at(0), "[json.exception.type_error.304] (/one) cannot use at() with number", json::type_error);
+        }
+
+        // Code from #3007 triggering unwanted assertion without fix to update().
+        {
+            json root = json::array();
+            json lower = json::object();
+
+            {
+                json lowest = json::object();
+                lowest["one"] = 1;
+
+                lower.update(lowest);
+            }
+
+            root.push_back(lower);
+        }
+    }
+
+    SECTION("Regression test for issue #3032 - Yet another assertion failure when inserting into arrays with JSON_DIAGNOSTICS set")
+    {
+        // reference operator[](size_type idx)
+        {
+            json j_arr = json::array();
+            j_arr[0] = 0;
+            j_arr[1] = 1;
+            j_arr[2] = 2;
+            j_arr[3] = 3;
+            j_arr[4] = 4;
+            j_arr[5] = 5;
+            j_arr[6] = 6;
+            j_arr[7] = 7;
+            json const j_arr_copy = j_arr;
+        }
+    }
+
+    SECTION("Regression test for issue #3915 - JSON_DIAGNOSTICS trigger assertion")
+    {
+        json j = json::object();
+        j["root"] = "root_str";
+
+        json jj = json::object();
+        jj["child"] = json::object();
+
+        // If do not push anything in object, then no assert will be produced
+        jj["child"]["prop1"] = "prop1_value";
+
+        // Push all properties of child in parent
+        j.insert(jj.at("child").begin(), jj.at("child").end());
+
+        // Here assert is generated when construct new json
+        const json k(j);
+
+        CHECK(k.dump() == "{\"prop1\":\"prop1_value\",\"root\":\"root_str\"}");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-disabled_exceptions.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-disabled_exceptions.cpp
new file mode 100644
index 00000000..ef64eeee
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-disabled_exceptions.cpp
@@ -0,0 +1,51 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// disable -Wnoexcept as exceptions are switched off for this test suite
+DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+DOCTEST_GCC_SUPPRESS_WARNING("-Wnoexcept")
+
+#include <nlohmann/json.hpp>
+using json = nlohmann::json;
+
+/////////////////////////////////////////////////////////////////////
+// for #2824
+/////////////////////////////////////////////////////////////////////
+
+class sax_no_exception : public nlohmann::detail::json_sax_dom_parser<json, nlohmann::detail::string_input_adapter_type>
+{
+  public:
+    explicit sax_no_exception(json& j) : nlohmann::detail::json_sax_dom_parser<json, nlohmann::detail::string_input_adapter_type>(j, false) {}
+
+    static bool parse_error(std::size_t /*position*/, const std::string& /*last_token*/, const json::exception& ex)
+    {
+        error_string = new std::string(ex.what()); // NOLINT(cppcoreguidelines-owning-memory)
+        return false;
+    }
+
+    static std::string* error_string;
+};
+
+std::string* sax_no_exception::error_string = nullptr;
+
+TEST_CASE("Tests with disabled exceptions")
+{
+    SECTION("issue #2824 - encoding of json::exception::what()")
+    {
+        json j;
+        sax_no_exception sax(j);
+
+        CHECK (!json::sax_parse("xyz", &sax));
+        CHECK(*sax_no_exception::error_string == "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - invalid literal; last read: 'x'");
+        delete sax_no_exception::error_string; // NOLINT(cppcoreguidelines-owning-memory)
+    }
+}
+
+DOCTEST_GCC_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-element_access1.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-element_access1.cpp
new file mode 100644
index 00000000..844e6a44
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-element_access1.cpp
@@ -0,0 +1,880 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("element access 1")
+{
+    SECTION("array")
+    {
+        json j = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+        const json j_const = j;
+
+        SECTION("access specified element with bounds checking")
+        {
+            SECTION("access within bounds")
+            {
+                CHECK(j.at(0) == json(1));
+                CHECK(j.at(1) == json(1u));
+                CHECK(j.at(2) == json(true));
+                CHECK(j.at(3) == json(nullptr));
+                CHECK(j.at(4) == json("string"));
+                CHECK(j.at(5) == json(42.23));
+                CHECK(j.at(6) == json::object());
+                CHECK(j.at(7) == json({1, 2, 3}));
+
+                CHECK(j_const.at(0) == json(1));
+                CHECK(j_const.at(1) == json(1u));
+                CHECK(j_const.at(2) == json(true));
+                CHECK(j_const.at(3) == json(nullptr));
+                CHECK(j_const.at(4) == json("string"));
+                CHECK(j_const.at(5) == json(42.23));
+                CHECK(j_const.at(6) == json::object());
+                CHECK(j_const.at(7) == json({1, 2, 3}));
+            }
+
+            SECTION("access outside bounds")
+            {
+                CHECK_THROWS_WITH_AS(j.at(8),
+                                     "[json.exception.out_of_range.401] array index 8 is out of range", json::out_of_range&);
+                CHECK_THROWS_WITH_AS(j_const.at(8),
+                                     "[json.exception.out_of_range.401] array index 8 is out of range", json::out_of_range&);
+            }
+
+            SECTION("access on non-array type")
+            {
+                SECTION("null")
+                {
+                    json j_nonarray(json::value_t::null);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+
+                    CHECK_THROWS_WITH_AS(j_nonarray.at(0), "[json.exception.type_error.304] cannot use at() with null", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const.at(0), "[json.exception.type_error.304] cannot use at() with null", json::type_error&);
+                }
+
+                SECTION("boolean")
+                {
+                    json j_nonarray(json::value_t::boolean);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+
+                    CHECK_THROWS_WITH_AS(j_nonarray.at(0), "[json.exception.type_error.304] cannot use at() with boolean", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const.at(0), "[json.exception.type_error.304] cannot use at() with boolean", json::type_error&);
+                }
+
+                SECTION("string")
+                {
+                    json j_nonarray(json::value_t::string);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+
+                    CHECK_THROWS_WITH_AS(j_nonarray.at(0), "[json.exception.type_error.304] cannot use at() with string", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const.at(0), "[json.exception.type_error.304] cannot use at() with string", json::type_error&);
+                }
+
+                SECTION("object")
+                {
+                    json j_nonarray(json::value_t::object);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+
+                    CHECK_THROWS_WITH_AS(j_nonarray.at(0), "[json.exception.type_error.304] cannot use at() with object", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const.at(0), "[json.exception.type_error.304] cannot use at() with object", json::type_error&);
+                }
+
+                SECTION("number (integer)")
+                {
+                    json j_nonarray(json::value_t::number_integer);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+
+                    CHECK_THROWS_WITH_AS(j_nonarray.at(0), "[json.exception.type_error.304] cannot use at() with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const.at(0), "[json.exception.type_error.304] cannot use at() with number", json::type_error&);
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    json j_nonarray(json::value_t::number_unsigned);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+
+                    CHECK_THROWS_WITH_AS(j_nonarray.at(0), "[json.exception.type_error.304] cannot use at() with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const.at(0), "[json.exception.type_error.304] cannot use at() with number", json::type_error&);
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    json j_nonarray(json::value_t::number_float);
+                    const json j_nonarray_const(j_nonarray);  // NOLINT(performance-unnecessary-copy-initialization)
+
+                    CHECK_THROWS_WITH_AS(j_nonarray.at(0), "[json.exception.type_error.304] cannot use at() with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const.at(0), "[json.exception.type_error.304] cannot use at() with number", json::type_error&);
+                }
+            }
+        }
+
+        SECTION("front and back")
+        {
+            CHECK(j.front() == json(1));
+            CHECK(j_const.front() == json(1));
+            CHECK(j.back() == json({1, 2, 3}));
+            CHECK(j_const.back() == json({1, 2, 3}));
+        }
+
+        SECTION("access specified element")
+        {
+            SECTION("access within bounds")
+            {
+                CHECK(j[0] == json(1));
+                CHECK(j[1] == json(1u));
+                CHECK(j[2] == json(true));
+                CHECK(j[3] == json(nullptr));
+                CHECK(j[4] == json("string"));
+                CHECK(j[5] == json(42.23));
+                CHECK(j[6] == json::object());
+                CHECK(j[7] == json({1, 2, 3}));
+
+                CHECK(j_const[0] == json(1));
+                CHECK(j_const[1] == json(1u));
+                CHECK(j_const[2] == json(true));
+                CHECK(j_const[3] == json(nullptr));
+                CHECK(j_const[4] == json("string"));
+                CHECK(j_const[5] == json(42.23));
+                CHECK(j_const[6] == json::object());
+                CHECK(j_const[7] == json({1, 2, 3}));
+            }
+
+            SECTION("access on non-array type")
+            {
+                SECTION("null")
+                {
+                    SECTION("standard tests")
+                    {
+                        json j_nonarray(json::value_t::null);
+                        const json j_nonarray_const(j_nonarray);  // NOLINT(performance-unnecessary-copy-initialization)
+                        CHECK_NOTHROW(j_nonarray[0]);
+                        CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with null", json::type_error&);
+                    }
+
+                    SECTION("implicit transformation to properly filled array")
+                    {
+                        json j_nonarray;
+                        j_nonarray[3] = 42;
+                        CHECK(j_nonarray == json({nullptr, nullptr, nullptr, 42}));
+                    }
+                }
+
+                SECTION("boolean")
+                {
+                    json j_nonarray(json::value_t::boolean);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with boolean", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with boolean", json::type_error&);
+                }
+
+                SECTION("string")
+                {
+                    json j_nonarray(json::value_t::string);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with string", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with string", json::type_error&);
+                }
+
+                SECTION("object")
+                {
+                    json j_nonarray(json::value_t::object);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with object", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with object", json::type_error&);
+                }
+
+                SECTION("number (integer)")
+                {
+                    json j_nonarray(json::value_t::number_integer);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    json j_nonarray(json::value_t::number_unsigned);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    json j_nonarray(json::value_t::number_float);
+                    const json j_nonarray_const(j_nonarray); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonarray[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonarray_const[0], "[json.exception.type_error.305] cannot use operator[] with a numeric argument with number", json::type_error&);
+                }
+            }
+        }
+
+        SECTION("remove specified element")
+        {
+            SECTION("remove element by index")
+            {
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    jarray.erase(0);
+                    CHECK(jarray == json({1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                }
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    jarray.erase(1);
+                    CHECK(jarray == json({1, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                }
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    jarray.erase(2);
+                    CHECK(jarray == json({1, 1u, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                }
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    jarray.erase(3);
+                    CHECK(jarray == json({1, 1u, true, "string", 42.23, json::object(), {1, 2, 3}}));
+                }
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    jarray.erase(4);
+                    CHECK(jarray == json({1, 1u, true, nullptr, 42.23, json::object(), {1, 2, 3}}));
+                }
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    jarray.erase(5);
+                    CHECK(jarray == json({1, 1u, true, nullptr, "string", json::object(), {1, 2, 3}}));
+                }
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    jarray.erase(6);
+                    CHECK(jarray == json({1, 1u, true, nullptr, "string", 42.23, {1, 2, 3}}));
+                }
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    jarray.erase(7);
+                    CHECK(jarray == json({1, 1u, true, nullptr, "string", 42.23, json::object()}));
+                }
+                {
+                    json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                    CHECK_THROWS_WITH_AS(jarray.erase(8), "[json.exception.out_of_range.401] array index 8 is out of range", json::out_of_range&);
+                }
+            }
+
+            SECTION("remove element by iterator")
+            {
+                SECTION("erase(begin())")
+                {
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::iterator const it2 = jarray.erase(jarray.begin());
+                        CHECK(jarray == json({1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(*it2 == json(1u));
+                    }
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::const_iterator const it2 = jarray.erase(jarray.cbegin());
+                        CHECK(jarray == json({1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(*it2 == json(1u));
+                    }
+                }
+
+                SECTION("erase(begin(), end())")
+                {
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::iterator it2 = jarray.erase(jarray.begin(), jarray.end());
+                        CHECK(jarray == json::array());
+                        CHECK(it2 == jarray.end());
+                    }
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::const_iterator it2 = jarray.erase(jarray.cbegin(), jarray.cend());
+                        CHECK(jarray == json::array());
+                        CHECK(it2 == jarray.cend());
+                    }
+                }
+
+                SECTION("erase(begin(), begin())")
+                {
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::iterator const it2 = jarray.erase(jarray.begin(), jarray.begin());
+                        CHECK(jarray == json({1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(*it2 == json(1));
+                    }
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::const_iterator const it2 = jarray.erase(jarray.cbegin(), jarray.cbegin());
+                        CHECK(jarray == json({1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(*it2 == json(1));
+                    }
+                }
+
+                SECTION("erase at offset")
+                {
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::iterator const it = jarray.begin() + 4;
+                        json::iterator const it2 = jarray.erase(it);
+                        CHECK(jarray == json({1, 1u, true, nullptr, 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(*it2 == json(42.23));
+                    }
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::const_iterator const it = jarray.cbegin() + 4;
+                        json::const_iterator const it2 = jarray.erase(it);
+                        CHECK(jarray == json({1, 1u, true, nullptr, 42.23, json::object(), {1, 2, 3}}));
+                        CHECK(*it2 == json(42.23));
+                    }
+                }
+
+                SECTION("erase subrange")
+                {
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::iterator const it2 = jarray.erase(jarray.begin() + 3, jarray.begin() + 6);
+                        CHECK(jarray == json({1, 1u, true, json::object(), {1, 2, 3}}));
+                        CHECK(*it2 == json::object());
+                    }
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json::const_iterator const it2 = jarray.erase(jarray.cbegin() + 3, jarray.cbegin() + 6);
+                        CHECK(jarray == json({1, 1u, true, json::object(), {1, 2, 3}}));
+                        CHECK(*it2 == json::object());
+                    }
+                }
+
+                SECTION("different arrays")
+                {
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json jarray2 = {"foo", "bar"};
+
+                        CHECK_THROWS_WITH_AS(jarray.erase(jarray2.begin()),
+                                             "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jarray.erase(jarray.begin(), jarray2.end()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jarray.erase(jarray2.begin(), jarray.end()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jarray.erase(jarray2.begin(), jarray2.end()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                    }
+                    {
+                        json jarray = {1, 1u, true, nullptr, "string", 42.23, json::object(), {1, 2, 3}};
+                        json const jarray2 = {"foo", "bar"};
+
+                        CHECK_THROWS_WITH_AS(jarray.erase(jarray2.cbegin()),
+                                             "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jarray.erase(jarray.cbegin(), jarray2.cend()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jarray.erase(jarray2.cbegin(), jarray.cend()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jarray.erase(jarray2.cbegin(), jarray2.cend()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", json::invalid_iterator&);
+                    }
+                }
+            }
+
+            SECTION("remove element by index in non-array type")
+            {
+                SECTION("null")
+                {
+                    json j_nonobject(json::value_t::null);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(0), "[json.exception.type_error.307] cannot use erase() with null", json::type_error&);
+                }
+
+                SECTION("boolean")
+                {
+                    json j_nonobject(json::value_t::boolean);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(0), "[json.exception.type_error.307] cannot use erase() with boolean", json::type_error&);
+                }
+
+                SECTION("string")
+                {
+                    json j_nonobject(json::value_t::string);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(0), "[json.exception.type_error.307] cannot use erase() with string", json::type_error&);
+                }
+
+                SECTION("object")
+                {
+                    json j_nonobject(json::value_t::object);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(0), "[json.exception.type_error.307] cannot use erase() with object", json::type_error&);
+                }
+
+                SECTION("number (integer)")
+                {
+                    json j_nonobject(json::value_t::number_integer);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(0), "[json.exception.type_error.307] cannot use erase() with number", json::type_error&);
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    json j_nonobject(json::value_t::number_unsigned);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(0), "[json.exception.type_error.307] cannot use erase() with number", json::type_error&);
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    json j_nonobject(json::value_t::number_float);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(0), "[json.exception.type_error.307] cannot use erase() with number", json::type_error&);
+                }
+            }
+        }
+    }
+
+    SECTION("other values")
+    {
+        SECTION("front and back")
+        {
+            SECTION("null")
+            {
+                {
+                    json j;
+                    CHECK_THROWS_WITH_AS(j.front(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.back(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+                {
+                    const json j{};
+                    CHECK_THROWS_WITH_AS(j.front(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.back(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("string")
+            {
+                {
+                    json j = "foo";
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+                {
+                    const json j = "bar";
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+            }
+
+            SECTION("number (boolean)")
+            {
+                {
+                    json j = false;
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+                {
+                    const json j = true;
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+            }
+
+            SECTION("number (integer)")
+            {
+                {
+                    json j = 17;
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+                {
+                    const json j = 17;
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+            }
+
+            SECTION("number (unsigned)")
+            {
+                {
+                    json j = 17u;
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+                {
+                    const json j = 17u;
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+            }
+
+            SECTION("number (floating point)")
+            {
+                {
+                    json j = 23.42;
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+                {
+                    const json j = 23.42;
+                    CHECK(j.front() == j);
+                    CHECK(j.back() == j);
+                }
+            }
+        }
+
+        SECTION("erase with one valid iterator")
+        {
+            SECTION("null")
+            {
+                {
+                    json j;
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin()), "[json.exception.type_error.307] cannot use erase() with null", json::type_error&);
+                }
+                {
+                    json j;
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin()),
+                                         "[json.exception.type_error.307] cannot use erase() with null", json::type_error&);
+                }
+            }
+
+            SECTION("string")
+            {
+                {
+                    json j = "foo";
+                    json::iterator it = j.erase(j.begin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = "bar";
+                    json::const_iterator it = j.erase(j.cbegin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("number (boolean)")
+            {
+                {
+                    json j = false;
+                    json::iterator it = j.erase(j.begin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = true;
+                    json::const_iterator it = j.erase(j.cbegin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("number (integer)")
+            {
+                {
+                    json j = 17;
+                    json::iterator it = j.erase(j.begin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = 17;
+                    json::const_iterator it = j.erase(j.cbegin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("number (unsigned)")
+            {
+                {
+                    json j = 17u;
+                    json::iterator it = j.erase(j.begin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = 17u;
+                    json::const_iterator it = j.erase(j.cbegin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("number (floating point)")
+            {
+                {
+                    json j = 23.42;
+                    json::iterator it = j.erase(j.begin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = 23.42;
+                    json::const_iterator it = j.erase(j.cbegin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("binary")
+            {
+                {
+                    json j = json::binary({1, 2, 3});
+                    json::iterator it = j.erase(j.begin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = json::binary({1, 2, 3});
+                    json::const_iterator it = j.erase(j.cbegin());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+        }
+
+        SECTION("erase with one invalid iterator")
+        {
+            SECTION("string")
+            {
+                {
+                    json j = "foo";
+                    CHECK_THROWS_WITH_AS(j.erase(j.end()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = "bar";
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("number (boolean)")
+            {
+                {
+                    json j = false;
+                    CHECK_THROWS_WITH_AS(j.erase(j.end()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = true;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("number (integer)")
+            {
+                {
+                    json j = 17;
+                    CHECK_THROWS_WITH_AS(j.erase(j.end()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = 17;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("number (unsigned)")
+            {
+                {
+                    json j = 17u;
+                    CHECK_THROWS_WITH_AS(j.erase(j.end()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = 17u;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("number (floating point)")
+            {
+                {
+                    json j = 23.42;
+                    CHECK_THROWS_WITH_AS(j.erase(j.end()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = 23.42;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend()), "[json.exception.invalid_iterator.205] iterator out of range", json::invalid_iterator&);
+                }
+            }
+        }
+
+        SECTION("erase with two valid iterators")
+        {
+            SECTION("null")
+            {
+                {
+                    json j;
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.end()), "[json.exception.type_error.307] cannot use erase() with null", json::type_error&);
+                }
+                {
+                    json j;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cend()), "[json.exception.type_error.307] cannot use erase() with null", json::type_error&);
+                }
+            }
+
+            SECTION("string")
+            {
+                {
+                    json j = "foo";
+                    json::iterator it = j.erase(j.begin(), j.end());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = "bar";
+                    json::const_iterator it = j.erase(j.cbegin(), j.cend());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("number (boolean)")
+            {
+                {
+                    json j = false;
+                    json::iterator it = j.erase(j.begin(), j.end());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = true;
+                    json::const_iterator it = j.erase(j.cbegin(), j.cend());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("number (integer)")
+            {
+                {
+                    json j = 17;
+                    json::iterator it = j.erase(j.begin(), j.end());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = 17;
+                    json::const_iterator it = j.erase(j.cbegin(), j.cend());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("number (unsigned)")
+            {
+                {
+                    json j = 17u;
+                    json::iterator it = j.erase(j.begin(), j.end());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = 17u;
+                    json::const_iterator it = j.erase(j.cbegin(), j.cend());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("number (floating point)")
+            {
+                {
+                    json j = 23.42;
+                    json::iterator it = j.erase(j.begin(), j.end());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = 23.42;
+                    json::const_iterator it = j.erase(j.cbegin(), j.cend());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+
+            SECTION("binary")
+            {
+                {
+                    json j = json::binary({1, 2, 3});
+                    json::iterator it = j.erase(j.begin(), j.end());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+                {
+                    json j = json::binary({1, 2, 3});
+                    json::const_iterator it = j.erase(j.cbegin(), j.cend());
+                    CHECK(j.type() == json::value_t::null);
+                    CHECK(it == j.end());
+                }
+            }
+        }
+
+        SECTION("erase with two invalid iterators")
+        {
+            SECTION("string")
+            {
+                {
+                    json j = "foo";
+                    CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = "bar";
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("number (boolean)")
+            {
+                {
+                    json j = false;
+                    CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = true;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("number (integer)")
+            {
+                {
+                    json j = 17;
+                    CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = 17;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("number (unsigned)")
+            {
+                {
+                    json j = 17u;
+                    CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = 17u;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("number (floating point)")
+            {
+                {
+                    json j = 23.42;
+                    CHECK_THROWS_WITH_AS(j.erase(j.end(), j.end()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.begin(), j.begin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+                {
+                    json j = 23.42;
+                    CHECK_THROWS_WITH_AS(j.erase(j.cend(), j.cend()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.erase(j.cbegin(), j.cbegin()), "[json.exception.invalid_iterator.204] iterators out of range", json::invalid_iterator&);
+                }
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-element_access2.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-element_access2.cpp
new file mode 100644
index 00000000..739febc8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-element_access2.cpp
@@ -0,0 +1,1792 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+// build test with C++14
+// JSON_HAS_CPP_14
+
+TEST_CASE_TEMPLATE("element access 2", Json, nlohmann::json, nlohmann::ordered_json) // NOLINT(readability-math-missing-parentheses)
+{
+    SECTION("object")
+    {
+        Json j = {{"integer", 1}, {"unsigned", 1u}, {"floating", 42.23}, {"null", nullptr}, {"string", "hello world"}, {"boolean", true}, {"object", Json::object()}, {"array", {1, 2, 3}}};
+        const Json j_const = j;
+
+        SECTION("access specified element with bounds checking")
+        {
+            SECTION("access within bounds")
+            {
+                CHECK(j.at("integer") == Json(1));
+                CHECK(j.at("unsigned") == Json(1u));
+                CHECK(j.at("boolean") == Json(true));
+                CHECK(j.at("null") == Json(nullptr));
+                CHECK(j.at("string") == Json("hello world"));
+                CHECK(j.at("floating") == Json(42.23));
+                CHECK(j.at("object") == Json::object());
+                CHECK(j.at("array") == Json({1, 2, 3}));
+
+                CHECK(j_const.at("integer") == Json(1));
+                CHECK(j_const.at("unsigned") == Json(1u));
+                CHECK(j_const.at("boolean") == Json(true));
+                CHECK(j_const.at("null") == Json(nullptr));
+                CHECK(j_const.at("string") == Json("hello world"));
+                CHECK(j_const.at("floating") == Json(42.23));
+                CHECK(j_const.at("object") == Json::object());
+                CHECK(j_const.at("array") == Json({1, 2, 3}));
+
+#ifdef JSON_HAS_CPP_17
+                CHECK(j.at(std::string_view("integer")) == Json(1));
+                CHECK(j.at(std::string_view("unsigned")) == Json(1u));
+                CHECK(j.at(std::string_view("boolean")) == Json(true));
+                CHECK(j.at(std::string_view("null")) == Json(nullptr));
+                CHECK(j.at(std::string_view("string")) == Json("hello world"));
+                CHECK(j.at(std::string_view("floating")) == Json(42.23));
+                CHECK(j.at(std::string_view("object")) == Json::object());
+                CHECK(j.at(std::string_view("array")) == Json({1, 2, 3}));
+
+                CHECK(j_const.at(std::string_view("integer")) == Json(1));
+                CHECK(j_const.at(std::string_view("unsigned")) == Json(1u));
+                CHECK(j_const.at(std::string_view("boolean")) == Json(true));
+                CHECK(j_const.at(std::string_view("null")) == Json(nullptr));
+                CHECK(j_const.at(std::string_view("string")) == Json("hello world"));
+                CHECK(j_const.at(std::string_view("floating")) == Json(42.23));
+                CHECK(j_const.at(std::string_view("object")) == Json::object());
+                CHECK(j_const.at(std::string_view("array")) == Json({1, 2, 3}));
+#endif
+            }
+
+            SECTION("access outside bounds")
+            {
+                CHECK_THROWS_WITH_AS(j.at("foo"), "[json.exception.out_of_range.403] key 'foo' not found", typename Json::out_of_range&);
+                CHECK_THROWS_WITH_AS(j_const.at("foo"), "[json.exception.out_of_range.403] key 'foo' not found", typename Json::out_of_range&);
+
+#ifdef JSON_HAS_CPP_17
+                CHECK_THROWS_WITH_AS(j.at(std::string_view("foo")), "[json.exception.out_of_range.403] key 'foo' not found", typename Json::out_of_range&);
+                CHECK_THROWS_WITH_AS(j_const.at(std::string_view("foo")), "[json.exception.out_of_range.403] key 'foo' not found", typename Json::out_of_range&);
+#endif
+            }
+
+            SECTION("access on non-object type")
+            {
+                SECTION("null")
+                {
+                    Json j_nonobject(Json::value_t::null);
+                    const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with null", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with null", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view(std::string_view("foo"))), "[json.exception.type_error.304] cannot use at() with null", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view(std::string_view("foo"))), "[json.exception.type_error.304] cannot use at() with null", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("boolean")
+                {
+                    Json j_nonobject(Json::value_t::boolean);
+                    const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with boolean", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with boolean", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with boolean", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with boolean", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("string")
+                {
+                    Json j_nonobject(Json::value_t::string);
+                    const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with string", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with string", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with string", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with string", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("array")
+                {
+                    Json j_nonobject(Json::value_t::array);
+                    const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with array", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with array", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with array", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with array", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("number (integer)")
+                {
+                    Json j_nonobject(Json::value_t::number_integer);
+                    const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    Json j_nonobject(Json::value_t::number_unsigned);
+                    const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    Json j_nonobject(Json::value_t::number_float);
+                    const Json j_nonobject_const(j_nonobject); // NOLINT(performance-unnecessary-copy-initialization)
+                    CHECK_THROWS_WITH_AS(j_nonobject.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at("foo"), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject_const.at(std::string_view("foo")), "[json.exception.type_error.304] cannot use at() with number", typename Json::type_error&);
+#endif
+                }
+            }
+        }
+
+        SECTION("access specified element with default value")
+        {
+            SECTION("given a key")
+            {
+                SECTION("access existing value")
+                {
+                    CHECK(j.value("integer", 2) == 1);
+                    CHECK(j.value("integer", 1.0) == Approx(1));
+                    CHECK(j.value("unsigned", 2) == 1u);
+                    CHECK(j.value("unsigned", 1.0) == Approx(1u));
+                    CHECK(j.value("null", Json(1)) == Json());
+                    CHECK(j.value("boolean", false) == true);
+                    CHECK(j.value("string", "bar") == "hello world");
+                    CHECK(j.value("string", std::string("bar")) == "hello world");
+                    CHECK(j.value("floating", 12.34) == Approx(42.23));
+                    CHECK(j.value("floating", 12) == 42);
+                    CHECK(j.value("object", Json({{"foo", "bar"}})) == Json::object());
+                    CHECK(j.value("array", Json({10, 100})) == Json({1, 2, 3}));
+
+                    CHECK(j_const.value("integer", 2) == 1);
+                    CHECK(j_const.value("integer", 1.0) == Approx(1));
+                    CHECK(j_const.value("unsigned", 2) == 1u);
+                    CHECK(j_const.value("unsigned", 1.0) == Approx(1u));
+                    CHECK(j_const.value("boolean", false) == true);
+                    CHECK(j_const.value("string", "bar") == "hello world");
+                    CHECK(j_const.value("string", std::string("bar")) == "hello world");
+                    CHECK(j_const.value("floating", 12.34) == Approx(42.23));
+                    CHECK(j_const.value("floating", 12) == 42);
+                    CHECK(j_const.value("object", Json({{"foo", "bar"}})) == Json::object());
+                    CHECK(j_const.value("array", Json({10, 100})) == Json({1, 2, 3}));
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.value(std::string_view("integer"), 2) == 1);
+                    CHECK(j.value(std::string_view("integer"), 1.0) == Approx(1));
+                    CHECK(j.value(std::string_view("unsigned"), 2) == 1u);
+                    CHECK(j.value(std::string_view("unsigned"), 1.0) == Approx(1u));
+                    CHECK(j.value(std::string_view("null"), Json(1)) == Json());
+                    CHECK(j.value(std::string_view("boolean"), false) == true);
+                    CHECK(j.value(std::string_view("string"), "bar") == "hello world");
+                    CHECK(j.value(std::string_view("string"), std::string("bar")) == "hello world");
+                    CHECK(j.value(std::string_view("floating"), 12.34) == Approx(42.23));
+                    CHECK(j.value(std::string_view("floating"), 12) == 42);
+                    CHECK(j.value(std::string_view("object"), Json({{"foo", "bar"}})) == Json::object());
+                    CHECK(j.value(std::string_view("array"), Json({10, 100})) == Json({1, 2, 3}));
+
+                    CHECK(j_const.value(std::string_view("integer"), 2) == 1);
+                    CHECK(j_const.value(std::string_view("integer"), 1.0) == Approx(1));
+                    CHECK(j_const.value(std::string_view("unsigned"), 2) == 1u);
+                    CHECK(j_const.value(std::string_view("unsigned"), 1.0) == Approx(1u));
+                    CHECK(j_const.value(std::string_view("boolean"), false) == true);
+                    CHECK(j_const.value(std::string_view("string"), "bar") == "hello world");
+                    CHECK(j_const.value(std::string_view("string"), std::string("bar")) == "hello world");
+                    CHECK(j_const.value(std::string_view("floating"), 12.34) == Approx(42.23));
+                    CHECK(j_const.value(std::string_view("floating"), 12) == 42);
+                    CHECK(j_const.value(std::string_view("object"), Json({{"foo", "bar"}})) == Json::object());
+                    CHECK(j_const.value(std::string_view("array"), Json({10, 100})) == Json({1, 2, 3}));
+#endif
+                }
+
+                SECTION("access non-existing value")
+                {
+                    CHECK(j.value("_", 2) == 2);
+                    CHECK(j.value("_", 2u) == 2u);
+                    CHECK(j.value("_", false) == false);
+                    CHECK(j.value("_", "bar") == "bar");
+                    CHECK(j.value("_", 12.34) == Approx(12.34));
+                    CHECK(j.value("_", Json({{"foo", "bar"}})) == Json({{"foo", "bar"}}));
+                    CHECK(j.value("_", Json({10, 100})) == Json({10, 100}));
+
+                    CHECK(j_const.value("_", 2) == 2);
+                    CHECK(j_const.value("_", 2u) == 2u);
+                    CHECK(j_const.value("_", false) == false);
+                    CHECK(j_const.value("_", "bar") == "bar");
+                    CHECK(j_const.value("_", 12.34) == Approx(12.34));
+                    CHECK(j_const.value("_", Json({{"foo", "bar"}})) == Json({{"foo", "bar"}}));
+                    CHECK(j_const.value("_", Json({10, 100})) == Json({10, 100}));
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.value(std::string_view("_"), 2) == 2);
+                    CHECK(j.value(std::string_view("_"), 2u) == 2u);
+                    CHECK(j.value(std::string_view("_"), false) == false);
+                    CHECK(j.value(std::string_view("_"), "bar") == "bar");
+                    CHECK(j.value(std::string_view("_"), 12.34) == Approx(12.34));
+                    CHECK(j.value(std::string_view("_"), Json({{"foo", "bar"}})) == Json({{"foo", "bar"}}));
+                    CHECK(j.value(std::string_view("_"), Json({10, 100})) == Json({10, 100}));
+
+                    CHECK(j_const.value(std::string_view("_"), 2) == 2);
+                    CHECK(j_const.value(std::string_view("_"), 2u) == 2u);
+                    CHECK(j_const.value(std::string_view("_"), false) == false);
+                    CHECK(j_const.value(std::string_view("_"), "bar") == "bar");
+                    CHECK(j_const.value(std::string_view("_"), 12.34) == Approx(12.34));
+                    CHECK(j_const.value(std::string_view("_"), Json({{"foo", "bar"}})) == Json({{"foo", "bar"}}));
+                    CHECK(j_const.value(std::string_view("_"), Json({10, 100})) == Json({10, 100}));
+#endif
+                }
+
+                SECTION("access on non-object type")
+                {
+                    SECTION("null")
+                    {
+                        Json j_nonobject(Json::value_t::null);
+                        const Json j_nonobject_const(Json::value_t::null);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                        CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+#endif
+                    }
+
+                    SECTION("boolean")
+                    {
+                        Json j_nonobject(Json::value_t::boolean);
+                        const Json j_nonobject_const(Json::value_t::boolean);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                        CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&);
+#endif
+                    }
+
+                    SECTION("string")
+                    {
+                        Json j_nonobject(Json::value_t::string);
+                        const Json j_nonobject_const(Json::value_t::string);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                        CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&);
+#endif
+                    }
+
+                    SECTION("array")
+                    {
+                        Json j_nonobject(Json::value_t::array);
+                        const Json j_nonobject_const(Json::value_t::array);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                        CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&);
+#endif
+                    }
+
+                    SECTION("number (integer)")
+                    {
+                        Json j_nonobject(Json::value_t::number_integer);
+                        const Json j_nonobject_const(Json::value_t::number_integer);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                        CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+#endif
+                    }
+
+                    SECTION("number (unsigned)")
+                    {
+                        Json j_nonobject(Json::value_t::number_unsigned);
+                        const Json j_nonobject_const(Json::value_t::number_unsigned);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                        CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+#endif
+                    }
+
+                    SECTION("number (floating-point)")
+                    {
+                        Json j_nonobject(Json::value_t::number_float);
+                        const Json j_nonobject_const(Json::value_t::number_float);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("foo", 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                        CHECK_THROWS_WITH_AS(j_nonobject.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value(std::string_view("foo"), 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+#endif
+                    }
+                }
+            }
+
+            SECTION("given a JSON pointer")
+            {
+                SECTION("access existing value")
+                {
+                    CHECK(j.value("/integer"_json_pointer, 2) == 1);
+                    CHECK(j.value("/integer"_json_pointer, 1.0) == Approx(1));
+                    CHECK(j.value("/unsigned"_json_pointer, 2) == 1u);
+                    CHECK(j.value("/unsigned"_json_pointer, 1.0) == Approx(1u));
+                    CHECK(j.value("/null"_json_pointer, Json(1)) == Json());
+                    CHECK(j.value("/boolean"_json_pointer, false) == true);
+                    CHECK(j.value("/string"_json_pointer, "bar") == "hello world");
+                    CHECK(j.value("/string"_json_pointer, std::string("bar")) == "hello world");
+                    CHECK(j.value("/floating"_json_pointer, 12.34) == Approx(42.23));
+                    CHECK(j.value("/floating"_json_pointer, 12) == 42);
+                    CHECK(j.value("/object"_json_pointer, Json({{"foo", "bar"}})) == Json::object());
+                    CHECK(j.value("/array"_json_pointer, Json({10, 100})) == Json({1, 2, 3}));
+
+                    CHECK(j_const.value("/integer"_json_pointer, 2) == 1);
+                    CHECK(j_const.value("/integer"_json_pointer, 1.0) == Approx(1));
+                    CHECK(j_const.value("/unsigned"_json_pointer, 2) == 1u);
+                    CHECK(j_const.value("/unsigned"_json_pointer, 1.0) == Approx(1u));
+                    CHECK(j_const.value("/boolean"_json_pointer, false) == true);
+                    CHECK(j_const.value("/string"_json_pointer, "bar") == "hello world");
+                    CHECK(j_const.value("/string"_json_pointer, std::string("bar")) == "hello world");
+                    CHECK(j_const.value("/floating"_json_pointer, 12.34) == Approx(42.23));
+                    CHECK(j_const.value("/floating"_json_pointer, 12) == 42);
+                    CHECK(j_const.value("/object"_json_pointer, Json({{"foo", "bar"}})) == Json::object());
+                    CHECK(j_const.value("/array"_json_pointer, Json({10, 100})) == Json({1, 2, 3}));
+                }
+
+                SECTION("access on non-object type")
+                {
+                    SECTION("null")
+                    {
+                        Json j_nonobject(Json::value_t::null);
+                        const Json j_nonobject_const(Json::value_t::null);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+                    }
+
+                    SECTION("boolean")
+                    {
+                        Json j_nonobject(Json::value_t::boolean);
+                        const Json j_nonobject_const(Json::value_t::boolean);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with boolean", typename Json::type_error&);
+                    }
+
+                    SECTION("string")
+                    {
+                        Json j_nonobject(Json::value_t::string);
+                        const Json j_nonobject_const(Json::value_t::string);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with string", typename Json::type_error&);
+                    }
+
+                    SECTION("array")
+                    {
+                        Json j_nonobject(Json::value_t::array);
+                        const Json j_nonobject_const(Json::value_t::array);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with array", typename Json::type_error&);
+                    }
+
+                    SECTION("number (integer)")
+                    {
+                        Json j_nonobject(Json::value_t::number_integer);
+                        const Json j_nonobject_const(Json::value_t::number_integer);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                    }
+
+                    SECTION("number (unsigned)")
+                    {
+                        Json j_nonobject(Json::value_t::number_unsigned);
+                        const Json j_nonobject_const(Json::value_t::number_unsigned);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                    }
+
+                    SECTION("number (floating-point)")
+                    {
+                        Json j_nonobject(Json::value_t::number_float);
+                        const Json j_nonobject_const(Json::value_t::number_float);
+                        CHECK_THROWS_WITH_AS(j_nonobject.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                        CHECK_THROWS_WITH_AS(j_nonobject_const.value("/foo"_json_pointer, 1), "[json.exception.type_error.306] cannot use value() with number", typename Json::type_error&);
+                    }
+                }
+            }
+        }
+
+        SECTION("non-const operator[]")
+        {
+            {
+                Json j_null;
+                CHECK(j_null.is_null());
+                j_null["key"] = 1;
+                CHECK(j_null.is_object());
+                CHECK(j_null.size() == 1);
+                j_null["key"] = 2;
+                CHECK(j_null.size() == 1);
+            }
+#ifdef JSON_HAS_CPP_17
+            {
+                std::string_view const key = "key";
+                Json j_null;
+                CHECK(j_null.is_null());
+                j_null[key] = 1;
+                CHECK(j_null.is_object());
+                CHECK(j_null.size() == 1);
+                j_null[key] = 2;
+                CHECK(j_null.size() == 1);
+            }
+#endif
+        }
+
+        SECTION("front and back")
+        {
+            if (std::is_same<Json, nlohmann::ordered_json>::value)
+            {
+                // "integer" is the first key
+                CHECK(j.front() == Json(1));
+                CHECK(j_const.front() == Json(1));
+                // "array" is last key
+                CHECK(j.back() == Json({1, 2, 3}));
+                CHECK(j_const.back() == Json({1, 2, 3}));
+            }
+            else
+            {
+                // "array" is the smallest key
+                CHECK(j.front() == Json({1, 2, 3}));
+                CHECK(j_const.front() == Json({1, 2, 3}));
+                // "unsigned" is the largest key
+                CHECK(j.back() == Json(1u));
+                CHECK(j_const.back() == Json(1u));
+            }
+        }
+
+        SECTION("access specified element")
+        {
+            SECTION("access within bounds")
+            {
+                CHECK(j["integer"] == Json(1));
+                CHECK(j[typename Json::object_t::key_type("integer")] == j["integer"]);
+
+                CHECK(j["unsigned"] == Json(1u));
+                CHECK(j[typename Json::object_t::key_type("unsigned")] == j["unsigned"]);
+
+                CHECK(j["boolean"] == Json(true));
+                CHECK(j[typename Json::object_t::key_type("boolean")] == j["boolean"]);
+
+                CHECK(j["null"] == Json(nullptr));
+                CHECK(j[typename Json::object_t::key_type("null")] == j["null"]);
+
+                CHECK(j["string"] == Json("hello world"));
+                CHECK(j[typename Json::object_t::key_type("string")] == j["string"]);
+
+                CHECK(j["floating"] == Json(42.23));
+                CHECK(j[typename Json::object_t::key_type("floating")] == j["floating"]);
+
+                CHECK(j["object"] == Json::object());
+                CHECK(j[typename Json::object_t::key_type("object")] == j["object"]);
+
+                CHECK(j["array"] == Json({1, 2, 3}));
+                CHECK(j[typename Json::object_t::key_type("array")] == j["array"]);
+
+                CHECK(j_const["integer"] == Json(1));
+                CHECK(j_const[typename Json::object_t::key_type("integer")] == j["integer"]);
+
+                CHECK(j_const["boolean"] == Json(true));
+                CHECK(j_const[typename Json::object_t::key_type("boolean")] == j["boolean"]);
+
+                CHECK(j_const["null"] == Json(nullptr));
+                CHECK(j_const[typename Json::object_t::key_type("null")] == j["null"]);
+
+                CHECK(j_const["string"] == Json("hello world"));
+                CHECK(j_const[typename Json::object_t::key_type("string")] == j["string"]);
+
+                CHECK(j_const["floating"] == Json(42.23));
+                CHECK(j_const[typename Json::object_t::key_type("floating")] == j["floating"]);
+
+                CHECK(j_const["object"] == Json::object());
+                CHECK(j_const[typename Json::object_t::key_type("object")] == j["object"]);
+
+                CHECK(j_const["array"] == Json({1, 2, 3}));
+                CHECK(j_const[typename Json::object_t::key_type("array")] == j["array"]);
+            }
+
+#ifdef JSON_HAS_CPP_17
+            SECTION("access within bounds (string_view)")
+            {
+                CHECK(j["integer"] == Json(1));
+                CHECK(j[std::string_view("integer")] == j["integer"]);
+
+                CHECK(j["unsigned"] == Json(1u));
+                CHECK(j[std::string_view("unsigned")] == j["unsigned"]);
+
+                CHECK(j["boolean"] == Json(true));
+                CHECK(j[std::string_view("boolean")] == j["boolean"]);
+
+                CHECK(j["null"] == Json(nullptr));
+                CHECK(j[std::string_view("null")] == j["null"]);
+
+                CHECK(j["string"] == Json("hello world"));
+                CHECK(j[std::string_view("string")] == j["string"]);
+
+                CHECK(j["floating"] == Json(42.23));
+                CHECK(j[std::string_view("floating")] == j["floating"]);
+
+                CHECK(j["object"] == Json::object());
+                CHECK(j[std::string_view("object")] == j["object"]);
+
+                CHECK(j["array"] == Json({1, 2, 3}));
+                CHECK(j[std::string_view("array")] == j["array"]);
+
+                CHECK(j_const["integer"] == Json(1));
+                CHECK(j_const[std::string_view("integer")] == j["integer"]);
+
+                CHECK(j_const["boolean"] == Json(true));
+                CHECK(j_const[std::string_view("boolean")] == j["boolean"]);
+
+                CHECK(j_const["null"] == Json(nullptr));
+                CHECK(j_const[std::string_view("null")] == j["null"]);
+
+                CHECK(j_const["string"] == Json("hello world"));
+                CHECK(j_const[std::string_view("string")] == j["string"]);
+
+                CHECK(j_const["floating"] == Json(42.23));
+                CHECK(j_const[std::string_view("floating")] == j["floating"]);
+
+                CHECK(j_const["object"] == Json::object());
+                CHECK(j_const[std::string_view("object")] == j["object"]);
+
+                CHECK(j_const["array"] == Json({1, 2, 3}));
+                CHECK(j_const[std::string_view("array")] == j["array"]);
+            }
+#endif
+
+            SECTION("access on non-object type")
+            {
+                SECTION("null")
+                {
+                    Json j_nonobject(Json::value_t::null);
+                    Json j_nonobject2(Json::value_t::null);
+                    const Json j_const_nonobject(j_nonobject);
+
+                    CHECK_NOTHROW(j_nonobject["foo"]);
+                    CHECK_NOTHROW(j_nonobject2[typename Json::object_t::key_type("foo")]);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject["foo"], "[json.exception.type_error.305] cannot use operator[] with a string argument with null", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with null", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_NOTHROW(j_nonobject2[std::string_view("foo")]);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with null", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("boolean")
+                {
+                    Json j_nonobject(Json::value_t::boolean);
+                    const Json j_const_nonobject(j_nonobject);
+                    CHECK_THROWS_WITH_AS(j_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with boolean", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("string")
+                {
+                    Json j_nonobject(Json::value_t::string);
+                    const Json j_const_nonobject(j_nonobject);
+                    CHECK_THROWS_WITH_AS(j_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with string", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("array")
+                {
+                    Json j_nonobject(Json::value_t::array);
+                    const Json j_const_nonobject(j_nonobject);
+                    CHECK_THROWS_WITH_AS(j_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with array", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("number (integer)")
+                {
+                    Json j_nonobject(Json::value_t::number_integer);
+                    const Json j_const_nonobject(j_nonobject);
+                    CHECK_THROWS_WITH_AS(j_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    Json j_nonobject(Json::value_t::number_unsigned);
+                    const Json j_const_nonobject(j_nonobject);
+                    CHECK_THROWS_WITH_AS(j_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    Json j_nonobject(Json::value_t::number_float);
+                    const Json j_const_nonobject(j_nonobject);
+                    CHECK_THROWS_WITH_AS(j_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject["foo"],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[typename Json::object_t::key_type("foo")],
+                                         "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_const_nonobject[std::string_view("foo")], "[json.exception.type_error.305] cannot use operator[] with a string argument with number", typename Json::type_error&);
+#endif
+                }
+            }
+        }
+
+        SECTION("remove specified element")
+        {
+            SECTION("remove element by key")
+            {
+                CHECK(j.find("integer") != j.end());
+                CHECK(j.erase("integer") == 1);
+                CHECK(j.find("integer") == j.end());
+                CHECK(j.erase("integer") == 0);
+
+                CHECK(j.find("unsigned") != j.end());
+                CHECK(j.erase("unsigned") == 1);
+                CHECK(j.find("unsigned") == j.end());
+                CHECK(j.erase("unsigned") == 0);
+
+                CHECK(j.find("boolean") != j.end());
+                CHECK(j.erase("boolean") == 1);
+                CHECK(j.find("boolean") == j.end());
+                CHECK(j.erase("boolean") == 0);
+
+                CHECK(j.find("null") != j.end());
+                CHECK(j.erase("null") == 1);
+                CHECK(j.find("null") == j.end());
+                CHECK(j.erase("null") == 0);
+
+                CHECK(j.find("string") != j.end());
+                CHECK(j.erase("string") == 1);
+                CHECK(j.find("string") == j.end());
+                CHECK(j.erase("string") == 0);
+
+                CHECK(j.find("floating") != j.end());
+                CHECK(j.erase("floating") == 1);
+                CHECK(j.find("floating") == j.end());
+                CHECK(j.erase("floating") == 0);
+
+                CHECK(j.find("object") != j.end());
+                CHECK(j.erase("object") == 1);
+                CHECK(j.find("object") == j.end());
+                CHECK(j.erase("object") == 0);
+
+                CHECK(j.find("array") != j.end());
+                CHECK(j.erase("array") == 1);
+                CHECK(j.find("array") == j.end());
+                CHECK(j.erase("array") == 0);
+            }
+
+#ifdef JSON_HAS_CPP_17
+            SECTION("remove element by key (string_view)")
+            {
+                CHECK(j.find(std::string_view("integer")) != j.end());
+                CHECK(j.erase(std::string_view("integer")) == 1);
+                CHECK(j.find(std::string_view("integer")) == j.end());
+                CHECK(j.erase(std::string_view("integer")) == 0);
+
+                CHECK(j.find(std::string_view("unsigned")) != j.end());
+                CHECK(j.erase(std::string_view("unsigned")) == 1);
+                CHECK(j.find(std::string_view("unsigned")) == j.end());
+                CHECK(j.erase(std::string_view("unsigned")) == 0);
+
+                CHECK(j.find(std::string_view("boolean")) != j.end());
+                CHECK(j.erase(std::string_view("boolean")) == 1);
+                CHECK(j.find(std::string_view("boolean")) == j.end());
+                CHECK(j.erase(std::string_view("boolean")) == 0);
+
+                CHECK(j.find(std::string_view("null")) != j.end());
+                CHECK(j.erase(std::string_view("null")) == 1);
+                CHECK(j.find(std::string_view("null")) == j.end());
+                CHECK(j.erase(std::string_view("null")) == 0);
+
+                CHECK(j.find(std::string_view("string")) != j.end());
+                CHECK(j.erase(std::string_view("string")) == 1);
+                CHECK(j.find(std::string_view("string")) == j.end());
+                CHECK(j.erase(std::string_view("string")) == 0);
+
+                CHECK(j.find(std::string_view("floating")) != j.end());
+                CHECK(j.erase(std::string_view("floating")) == 1);
+                CHECK(j.find(std::string_view("floating")) == j.end());
+                CHECK(j.erase(std::string_view("floating")) == 0);
+
+                CHECK(j.find(std::string_view("object")) != j.end());
+                CHECK(j.erase(std::string_view("object")) == 1);
+                CHECK(j.find(std::string_view("object")) == j.end());
+                CHECK(j.erase(std::string_view("object")) == 0);
+
+                CHECK(j.find(std::string_view("array")) != j.end());
+                CHECK(j.erase(std::string_view("array")) == 1);
+                CHECK(j.find(std::string_view("array")) == j.end());
+                CHECK(j.erase(std::string_view("array")) == 0);
+            }
+#endif
+
+            SECTION("remove element by iterator")
+            {
+                SECTION("erase(begin())")
+                {
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        typename Json::iterator const it2 = jobject.erase(jobject.begin());
+                        CHECK(jobject == Json({{"b", 1}, {"c", 17u}}));
+                        CHECK(*it2 == Json(1));
+                    }
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        typename Json::const_iterator const it2 = jobject.erase(jobject.cbegin());
+                        CHECK(jobject == Json({{"b", 1}, {"c", 17u}}));
+                        CHECK(*it2 == Json(1));
+                    }
+                }
+
+                SECTION("erase(begin(), end())")
+                {
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        typename Json::iterator it2 = jobject.erase(jobject.begin(), jobject.end());
+                        CHECK(jobject == Json::object());
+                        CHECK(it2 == jobject.end());
+                    }
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        typename Json::const_iterator it2 = jobject.erase(jobject.cbegin(), jobject.cend());
+                        CHECK(jobject == Json::object());
+                        CHECK(it2 == jobject.cend());
+                    }
+                }
+
+                SECTION("erase(begin(), begin())")
+                {
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        typename Json::iterator const it2 = jobject.erase(jobject.begin(), jobject.begin());
+                        CHECK(jobject == Json({{"a", "a"}, {"b", 1}, {"c", 17u}}));
+                        CHECK(*it2 == Json("a"));
+                    }
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        typename Json::const_iterator const it2 = jobject.erase(jobject.cbegin(), jobject.cbegin());
+                        CHECK(jobject == Json({{"a", "a"}, {"b", 1}, {"c", 17u}}));
+                        CHECK(*it2 == Json("a"));
+                    }
+                }
+
+                SECTION("erase at offset")
+                {
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        typename Json::iterator const it = jobject.find("b");
+                        typename Json::iterator const it2 = jobject.erase(it);
+                        CHECK(jobject == Json({{"a", "a"}, {"c", 17u}}));
+                        CHECK(*it2 == Json(17));
+                    }
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        typename Json::const_iterator const it = jobject.find("b");
+                        typename Json::const_iterator const it2 = jobject.erase(it);
+                        CHECK(jobject == Json({{"a", "a"}, {"c", 17u}}));
+                        CHECK(*it2 == Json(17));
+                    }
+                }
+
+                SECTION("erase subrange")
+                {
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                        typename Json::iterator const it2 = jobject.erase(jobject.find("b"), jobject.find("e"));
+                        CHECK(jobject == Json({{"a", "a"}, {"e", true}}));
+                        CHECK(*it2 == Json(true));
+                    }
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                        typename Json::const_iterator const it2 = jobject.erase(jobject.find("b"), jobject.find("e"));
+                        CHECK(jobject == Json({{"a", "a"}, {"e", true}}));
+                        CHECK(*it2 == Json(true));
+                    }
+                }
+
+                SECTION("different objects")
+                {
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                        Json jobject2 = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        CHECK_THROWS_WITH_AS(jobject.erase(jobject2.begin()),
+                                             "[json.exception.invalid_iterator.202] iterator does not fit current value", typename Json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jobject.erase(jobject.begin(), jobject2.end()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jobject.erase(jobject2.begin(), jobject.end()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jobject.erase(jobject2.begin(), jobject2.end()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&);
+                    }
+                    {
+                        Json jobject = {{"a", "a"}, {"b", 1}, {"c", 17u}, {"d", false}, {"e", true}};
+                        Json jobject2 = {{"a", "a"}, {"b", 1}, {"c", 17u}};
+                        CHECK_THROWS_WITH_AS(jobject.erase(jobject2.cbegin()),
+                                             "[json.exception.invalid_iterator.202] iterator does not fit current value", typename Json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jobject.erase(jobject.cbegin(), jobject2.cend()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jobject.erase(jobject2.cbegin(), jobject.cend()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&);
+                        CHECK_THROWS_WITH_AS(jobject.erase(jobject2.cbegin(), jobject2.cend()),
+                                             "[json.exception.invalid_iterator.203] iterators do not fit current value", typename Json::invalid_iterator&);
+                    }
+                }
+            }
+
+            SECTION("remove element by key in non-object type")
+            {
+                SECTION("null")
+                {
+                    Json j_nonobject(Json::value_t::null);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with null", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with null", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("boolean")
+                {
+                    Json j_nonobject(Json::value_t::boolean);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with boolean", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with boolean", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("string")
+                {
+                    Json j_nonobject(Json::value_t::string);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with string", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with string", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("array")
+                {
+                    Json j_nonobject(Json::value_t::array);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with array", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with array", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("number (integer)")
+                {
+                    Json j_nonobject(Json::value_t::number_integer);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with number", typename Json::type_error&);
+#endif
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    Json j_nonobject(Json::value_t::number_float);
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase("foo"), "[json.exception.type_error.307] cannot use erase() with number", typename Json::type_error&);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK_THROWS_WITH_AS(j_nonobject.erase(std::string_view("foo")), "[json.exception.type_error.307] cannot use erase() with number", typename Json::type_error&);
+#endif
+                }
+            }
+        }
+
+        SECTION("find an element in an object")
+        {
+            SECTION("existing element")
+            {
+                for (const auto* key :
+                        {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array"
+                        })
+                {
+                    CHECK(j.find(key) != j.end());
+                    CHECK(*j.find(key) == j.at(key));
+                    CHECK(j_const.find(key) != j_const.end());
+                    CHECK(*j_const.find(key) == j_const.at(key));
+                }
+#ifdef JSON_HAS_CPP_17
+                for (const std::string_view key :
+                        {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array"
+                        })
+                {
+                    CHECK(j.find(key) != j.end());
+                    CHECK(*j.find(key) == j.at(key));
+                    CHECK(j_const.find(key) != j_const.end());
+                    CHECK(*j_const.find(key) == j_const.at(key));
+                }
+#endif
+            }
+
+            SECTION("nonexisting element")
+            {
+                CHECK(j.find("foo") == j.end());
+                CHECK(j_const.find("foo") == j_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                CHECK(j.find(std::string_view("foo")) == j.end());
+                CHECK(j_const.find(std::string_view("foo")) == j_const.end());
+#endif
+            }
+
+            SECTION("all types")
+            {
+                SECTION("null")
+                {
+                    Json j_nonarray(Json::value_t::null);
+                    const Json j_nonarray_const(j_nonarray);
+
+                    CHECK(j_nonarray.find("foo") == j_nonarray.end());
+                    CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end());
+                    CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end());
+#endif
+                }
+
+                SECTION("string")
+                {
+                    Json j_nonarray(Json::value_t::string);
+                    const Json j_nonarray_const(j_nonarray);
+
+                    CHECK(j_nonarray.find("foo") == j_nonarray.end());
+                    CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end());
+                    CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end());
+#endif
+                }
+
+                SECTION("object")
+                {
+                    Json j_nonarray(Json::value_t::object);
+                    const Json j_nonarray_const(j_nonarray);
+
+                    CHECK(j_nonarray.find("foo") == j_nonarray.end());
+                    CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end());
+                    CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end());
+#endif
+                }
+
+                SECTION("array")
+                {
+                    Json j_nonarray(Json::value_t::array);
+                    const Json j_nonarray_const(j_nonarray);
+
+                    CHECK(j_nonarray.find("foo") == j_nonarray.end());
+                    CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end());
+                    CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end());
+#endif
+                }
+
+                SECTION("boolean")
+                {
+                    Json j_nonarray(Json::value_t::boolean);
+                    const Json j_nonarray_const(j_nonarray);
+
+                    CHECK(j_nonarray.find("foo") == j_nonarray.end());
+                    CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end());
+                    CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end());
+#endif
+                }
+
+                SECTION("number (integer)")
+                {
+                    Json j_nonarray(Json::value_t::number_integer);
+                    const Json j_nonarray_const(j_nonarray);
+
+                    CHECK(j_nonarray.find("foo") == j_nonarray.end());
+                    CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end());
+                    CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end());
+#endif
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    Json j_nonarray(Json::value_t::number_unsigned);
+                    const Json j_nonarray_const(j_nonarray);
+
+                    CHECK(j_nonarray.find("foo") == j_nonarray.end());
+                    CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end());
+                    CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end());
+#endif
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    Json j_nonarray(Json::value_t::number_float);
+                    const Json j_nonarray_const(j_nonarray);
+
+                    CHECK(j_nonarray.find("foo") == j_nonarray.end());
+                    CHECK(j_nonarray_const.find("foo") == j_nonarray_const.end());
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonarray.find(std::string_view("foo")) == j_nonarray.end());
+                    CHECK(j_nonarray_const.find(std::string_view("foo")) == j_nonarray_const.end());
+#endif
+                }
+            }
+        }
+
+        SECTION("count keys in an object")
+        {
+            SECTION("existing element")
+            {
+                for (const auto* key :
+                        {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array"
+                        })
+                {
+                    CHECK(j.count(key) == 1);
+                    CHECK(j_const.count(key) == 1);
+                }
+#ifdef JSON_HAS_CPP_17
+                for (const std::string_view key :
+                        {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array"
+                        })
+                {
+                    CHECK(j.count(key) == 1);
+                    CHECK(j_const.count(key) == 1);
+                }
+#endif
+            }
+
+            SECTION("nonexisting element")
+            {
+                CHECK(j.count("foo") == 0);
+                CHECK(j_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                CHECK(j.count(std::string_view("foo")) == 0);
+                CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+            }
+
+            SECTION("all types")
+            {
+                SECTION("null")
+                {
+                    Json j_nonobject(Json::value_t::null);
+                    const Json j_nonobject_const(Json::value_t::null);
+
+                    CHECK(j_nonobject.count("foo") == 0);
+                    CHECK(j_nonobject_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.count(std::string_view("foo")) == 0);
+                    CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+                }
+
+                SECTION("string")
+                {
+                    Json j_nonobject(Json::value_t::string);
+                    const Json j_nonobject_const(Json::value_t::string);
+
+                    CHECK(j_nonobject.count("foo") == 0);
+                    CHECK(j_nonobject_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.count(std::string_view("foo")) == 0);
+                    CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+                }
+
+                SECTION("object")
+                {
+                    Json j_nonobject(Json::value_t::object);
+                    const Json j_nonobject_const(Json::value_t::object);
+
+                    CHECK(j_nonobject.count("foo") == 0);
+                    CHECK(j_nonobject_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.count(std::string_view("foo")) == 0);
+                    CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+                }
+
+                SECTION("array")
+                {
+                    Json j_nonobject(Json::value_t::array);
+                    const Json j_nonobject_const(Json::value_t::array);
+
+                    CHECK(j_nonobject.count("foo") == 0);
+                    CHECK(j_nonobject_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.count(std::string_view("foo")) == 0);
+                    CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+                }
+
+                SECTION("boolean")
+                {
+                    Json j_nonobject(Json::value_t::boolean);
+                    const Json j_nonobject_const(Json::value_t::boolean);
+
+                    CHECK(j_nonobject.count("foo") == 0);
+                    CHECK(j_nonobject_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.count(std::string_view("foo")) == 0);
+                    CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+                }
+
+                SECTION("number (integer)")
+                {
+                    Json j_nonobject(Json::value_t::number_integer);
+                    const Json j_nonobject_const(Json::value_t::number_integer);
+
+                    CHECK(j_nonobject.count("foo") == 0);
+                    CHECK(j_nonobject_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.count(std::string_view("foo")) == 0);
+                    CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    Json j_nonobject(Json::value_t::number_unsigned);
+                    const Json j_nonobject_const(Json::value_t::number_unsigned);
+
+                    CHECK(j_nonobject.count("foo") == 0);
+                    CHECK(j_nonobject_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.count(std::string_view("foo")) == 0);
+                    CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    Json j_nonobject(Json::value_t::number_float);
+                    const Json j_nonobject_const(Json::value_t::number_float);
+
+                    CHECK(j_nonobject.count("foo") == 0);
+                    CHECK(j_nonobject_const.count("foo") == 0);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j.count(std::string_view("foo")) == 0);
+                    CHECK(j_const.count(std::string_view("foo")) == 0);
+#endif
+                }
+            }
+        }
+
+        SECTION("check existence of key in an object")
+        {
+            SECTION("existing element")
+            {
+                for (const auto* key :
+                        {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array"
+                        })
+                {
+                    CHECK(j.contains(key) == true);
+                    CHECK(j_const.contains(key) == true);
+                }
+
+#ifdef JSON_HAS_CPP_17
+                for (const std::string_view key :
+                        {"integer", "unsigned", "floating", "null", "string", "boolean", "object", "array"
+                        })
+                {
+                    CHECK(j.contains(key) == true);
+                    CHECK(j_const.contains(key) == true);
+                }
+#endif
+            }
+
+            SECTION("nonexisting element")
+            {
+                CHECK(j.contains("foo") == false);
+                CHECK(j_const.contains("foo") == false);
+
+#ifdef JSON_HAS_CPP_17
+                CHECK(j.contains(std::string_view("foo")) == false);
+                CHECK(j_const.contains(std::string_view("foo")) == false);
+#endif
+            }
+
+            SECTION("all types")
+            {
+                SECTION("null")
+                {
+                    Json j_nonobject(Json::value_t::null);
+                    const Json j_nonobject_const(Json::value_t::null);
+
+                    CHECK(j_nonobject.contains("foo") == false);
+                    CHECK(j_nonobject_const.contains("foo") == false);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonobject.contains(std::string_view("foo")) == false);
+                    CHECK(j_nonobject_const.contains(std::string_view("foo")) == false);
+#endif
+                }
+
+                SECTION("string")
+                {
+                    Json j_nonobject(Json::value_t::string);
+                    const Json j_nonobject_const(Json::value_t::string);
+
+                    CHECK(j_nonobject.contains("foo") == false);
+                    CHECK(j_nonobject_const.contains("foo") == false);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonobject.contains(std::string_view("foo")) == false);
+                    CHECK(j_nonobject_const.contains(std::string_view("foo")) == false);
+#endif
+                }
+
+                SECTION("object")
+                {
+                    Json j_nonobject(Json::value_t::object);
+                    const Json j_nonobject_const(Json::value_t::object);
+
+                    CHECK(j_nonobject.contains("foo") == false);
+                    CHECK(j_nonobject_const.contains("foo") == false);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonobject.contains(std::string_view("foo")) == false);
+                    CHECK(j_nonobject_const.contains(std::string_view("foo")) == false);
+#endif
+                }
+
+                SECTION("array")
+                {
+                    Json j_nonobject(Json::value_t::array);
+                    const Json j_nonobject_const(Json::value_t::array);
+
+                    CHECK(j_nonobject.contains("foo") == false);
+                    CHECK(j_nonobject_const.contains("foo") == false);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonobject.contains(std::string_view("foo")) == false);
+                    CHECK(j_nonobject_const.contains(std::string_view("foo")) == false);
+#endif
+                }
+
+                SECTION("boolean")
+                {
+                    Json j_nonobject(Json::value_t::boolean);
+                    const Json j_nonobject_const(Json::value_t::boolean);
+
+                    CHECK(j_nonobject.contains("foo") == false);
+                    CHECK(j_nonobject_const.contains("foo") == false);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonobject.contains(std::string_view("foo")) == false);
+                    CHECK(j_nonobject_const.contains(std::string_view("foo")) == false);
+#endif
+                }
+
+                SECTION("number (integer)")
+                {
+                    Json j_nonobject(Json::value_t::number_integer);
+                    const Json j_nonobject_const(Json::value_t::number_integer);
+
+                    CHECK(j_nonobject.contains("foo") == false);
+                    CHECK(j_nonobject_const.contains("foo") == false);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonobject.contains(std::string_view("foo")) == false);
+                    CHECK(j_nonobject_const.contains(std::string_view("foo")) == false);
+#endif
+                }
+
+                SECTION("number (unsigned)")
+                {
+                    Json j_nonobject(Json::value_t::number_unsigned);
+                    const Json j_nonobject_const(Json::value_t::number_unsigned);
+
+                    CHECK(j_nonobject.contains("foo") == false);
+                    CHECK(j_nonobject_const.contains("foo") == false);
+
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonobject.contains(std::string_view("foo")) == false);
+                    CHECK(j_nonobject_const.contains(std::string_view("foo")) == false);
+#endif
+                }
+
+                SECTION("number (floating-point)")
+                {
+                    Json j_nonobject(Json::value_t::number_float);
+                    const Json j_nonobject_const(Json::value_t::number_float);
+                    CHECK(j_nonobject.contains("foo") == false);
+                    CHECK(j_nonobject_const.contains("foo") == false);
+#ifdef JSON_HAS_CPP_17
+                    CHECK(j_nonobject.contains(std::string_view("foo")) == false);
+                    CHECK(j_nonobject_const.contains(std::string_view("foo")) == false);
+#endif
+                }
+            }
+        }
+    }
+}
+
+#if !defined(JSON_NOEXCEPTION)
+TEST_CASE_TEMPLATE("element access 2 (throwing tests)", Json, nlohmann::json, nlohmann::ordered_json) // NOLINT(readability-math-missing-parentheses)
+{
+    SECTION("object")
+    {
+        Json j = {{"integer", 1}, {"unsigned", 1u}, {"floating", 42.23}, {"null", nullptr}, {"string", "hello world"}, {"boolean", true}, {"object", Json::object()}, {"array", {1, 2, 3}}};
+        const Json j_const = {{"integer", 1}, {"unsigned", 1u}, {"floating", 42.23}, {"null", nullptr}, {"string", "hello world"}, {"boolean", true}, {"object", Json::object()}, {"array", {1, 2, 3}}};
+
+        SECTION("access specified element with default value")
+        {
+            SECTION("given a JSON pointer")
+            {
+                SECTION("access non-existing value")
+                {
+                    CHECK(j.value("/not/existing"_json_pointer, 2) == 2);
+                    CHECK(j.value("/not/existing"_json_pointer, 2u) == 2u);
+                    CHECK(j.value("/not/existing"_json_pointer, false) == false);
+                    CHECK(j.value("/not/existing"_json_pointer, "bar") == "bar");
+                    CHECK(j.value("/not/existing"_json_pointer, 12.34) == Approx(12.34));
+                    CHECK(j.value("/not/existing"_json_pointer, Json({{"foo", "bar"}})) == Json({{"foo", "bar"}}));
+                    CHECK(j.value("/not/existing"_json_pointer, Json({10, 100})) == Json({10, 100}));
+
+                    CHECK(j_const.value("/not/existing"_json_pointer, 2) == 2);
+                    CHECK(j_const.value("/not/existing"_json_pointer, 2u) == 2u);
+                    CHECK(j_const.value("/not/existing"_json_pointer, false) == false);
+                    CHECK(j_const.value("/not/existing"_json_pointer, "bar") == "bar");
+                    CHECK(j_const.value("/not/existing"_json_pointer, 12.34) == Approx(12.34));
+                    CHECK(j_const.value("/not/existing"_json_pointer, Json({{"foo", "bar"}})) == Json({{"foo", "bar"}}));
+                    CHECK(j_const.value("/not/existing"_json_pointer, Json({10, 100})) == Json({10, 100}));
+                }
+            }
+        }
+    }
+}
+#endif
+
+// TODO(falbrechtskirchinger) merge with the other test case; clean up
+TEST_CASE_TEMPLATE("element access 2 (additional value() tests)", Json, nlohmann::json, nlohmann::ordered_json) // NOLINT(readability-math-missing-parentheses)
+{
+    using string_t = typename Json::string_t;
+    using number_integer_t = typename Json::number_integer_t;
+
+    // test assumes string_t and object_t::key_type are the same
+    REQUIRE(std::is_same<string_t, typename Json::object_t::key_type>::value);
+
+    Json j
+    {
+        {"foo", "bar"},
+        {"baz", 42}
+    };
+
+    const char* cpstr = "default";
+    const char castr[] = "default"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+    string_t const str = "default";
+
+    number_integer_t integer = 69;
+    std::size_t size = 69;
+
+    SECTION("deduced ValueType")
+    {
+        SECTION("literal key")
+        {
+            CHECK(j.value("foo", "default") == "bar");
+            CHECK(j.value("foo", cpstr) == "bar");
+            CHECK(j.value("foo", castr) == "bar");
+            CHECK(j.value("foo", str) == "bar");
+            // this test is in fact different from the one below,
+            // because of 0 considering const char * overloads
+            // whereas any other number does not
+            CHECK(j.value("baz", 0) == 42);
+            CHECK(j.value("baz", 47) == 42);
+            CHECK(j.value("baz", integer) == 42);
+            CHECK(j.value("baz", size) == 42);
+
+            CHECK(j.value("bar", "default") == "default");
+            CHECK(j.value("bar", 0) == 0);
+            CHECK(j.value("bar", 47) == 47);
+            CHECK(j.value("bar", integer) == integer);
+            CHECK(j.value("bar", size) == size);
+
+            CHECK_THROWS_WITH_AS(Json().value("foo", "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().value("foo", str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+
+        SECTION("const char * key")
+        {
+            const char* key = "foo";
+            const char* key2 = "baz";
+            const char* key_notfound = "bar";
+
+            CHECK(j.value(key, "default") == "bar");
+            CHECK(j.value(key, cpstr) == "bar");
+            CHECK(j.value(key, castr) == "bar");
+            CHECK(j.value(key, str) == "bar");
+            CHECK(j.value(key2, 0) == 42);
+            CHECK(j.value(key2, 47) == 42);
+            CHECK(j.value(key2, integer) == 42);
+            CHECK(j.value(key2, size) == 42);
+
+            CHECK(j.value(key_notfound, "default") == "default");
+            CHECK(j.value(key_notfound, 0) == 0);
+            CHECK(j.value(key_notfound, 47) == 47);
+            CHECK(j.value(key_notfound, integer) == integer);
+            CHECK(j.value(key_notfound, size) == size);
+
+            CHECK_THROWS_WITH_AS(Json().value(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().value(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+
+        SECTION("const char(&)[] key")
+        {
+            const char key[] = "foo"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+            const char key2[] = "baz"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+            const char key_notfound[] = "bar"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+
+            CHECK(j.value(key, "default") == "bar");
+            CHECK(j.value(key, cpstr) == "bar");
+            CHECK(j.value(key, castr) == "bar");
+            CHECK(j.value(key, str) == "bar");
+            CHECK(j.value(key2, 0) == 42);
+            CHECK(j.value(key2, 47) == 42);
+            CHECK(j.value(key2, integer) == 42);
+            CHECK(j.value(key2, size) == 42);
+
+            CHECK(j.value(key_notfound, "default") == "default");
+            CHECK(j.value(key_notfound, 0) == 0);
+            CHECK(j.value(key_notfound, 47) == 47);
+            CHECK(j.value(key_notfound, integer) == integer);
+            CHECK(j.value(key_notfound, size) == size);
+
+            CHECK_THROWS_WITH_AS(Json().value(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().value(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+
+        SECTION("string_t/object_t::key_type key")
+        {
+            string_t const key = "foo";
+            string_t const key2 = "baz";
+            string_t const key_notfound = "bar";
+
+            CHECK(j.value(key, "default") == "bar");
+            CHECK(j.value(key, cpstr) == "bar");
+            CHECK(j.value(key, castr) == "bar");
+            CHECK(j.value(key, str) == "bar");
+            CHECK(j.value(key2, 0) == 42);
+            CHECK(j.value(key2, 47) == 42);
+            CHECK(j.value(key2, integer) == 42);
+            CHECK(j.value(key2, size) == 42);
+
+            CHECK(j.value(key_notfound, "default") == "default");
+            CHECK(j.value(key_notfound, 0) == 0);
+            CHECK(j.value(key_notfound, 47) == 47);
+            CHECK(j.value(key_notfound, integer) == integer);
+            CHECK(j.value(key_notfound, size) == size);
+
+            CHECK_THROWS_WITH_AS(Json().value(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().value(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+
+#ifdef JSON_HAS_CPP_17
+        SECTION("std::string_view key")
+        {
+            std::string_view const key = "foo";
+            std::string_view const key2 = "baz";
+            std::string_view const key_notfound = "bar";
+
+            CHECK(j.value(key, "default") == "bar");
+            CHECK(j.value(key, cpstr) == "bar");
+            CHECK(j.value(key, castr) == "bar");
+            CHECK(j.value(key, str) == "bar");
+            CHECK(j.value(key2, 0) == 42);
+            CHECK(j.value(key2, 47) == 42);
+            CHECK(j.value(key2, integer) == 42);
+            CHECK(j.value(key2, size) == 42);
+
+            CHECK(j.value(key_notfound, "default") == "default");
+            CHECK(j.value(key_notfound, 0) == 0);
+            CHECK(j.value(key_notfound, 47) == 47);
+            CHECK(j.value(key_notfound, integer) == integer);
+            CHECK(j.value(key_notfound, size) == size);
+
+            CHECK_THROWS_WITH_AS(Json().value(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().value(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+#endif
+    }
+
+    SECTION("explicit ValueType")
+    {
+        SECTION("literal key")
+        {
+            CHECK(j.template value<string_t>("foo", "default") == "bar");
+            CHECK(j.template value<string_t>("foo", cpstr) == "bar");
+            CHECK(j.template value<string_t>("foo", castr) == "bar");
+            CHECK(j.template value<string_t>("foo", str) == "bar");
+            CHECK(j.template value<number_integer_t>("baz", 0) == 42);
+            CHECK(j.template value<number_integer_t>("baz", 47) == 42);
+            CHECK(j.template value<number_integer_t>("baz", integer) == 42);
+            CHECK(j.template value<std::size_t>("baz", 0) == 42);
+            CHECK(j.template value<std::size_t>("baz", 47) == 42);
+            CHECK(j.template value<std::size_t>("baz", size) == 42);
+
+            CHECK(j.template value<string_t>("bar", "default") == "default");
+            CHECK(j.template value<number_integer_t>("bar", 0) == 0);
+            CHECK(j.template value<number_integer_t>("bar", 47) == 47);
+            CHECK(j.template value<number_integer_t>("bar", integer) == integer);
+            CHECK(j.template value<std::size_t>("bar", 0) == 0);
+            CHECK(j.template value<std::size_t>("bar", 47) == 47);
+            CHECK(j.template value<std::size_t>("bar", size) == size);
+
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>("foo", "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>("foo", str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+
+        SECTION("const char * key")
+        {
+            const char* key = "foo";
+            const char* key2 = "baz";
+            const char* key_notfound = "bar";
+
+            CHECK(j.template value<string_t>(key, "default") == "bar");
+            CHECK(j.template value<string_t>(key, cpstr) == "bar");
+            CHECK(j.template value<string_t>(key, castr) == "bar");
+            CHECK(j.template value<string_t>(key, str) == "bar");
+            CHECK(j.template value<number_integer_t>(key2, 0) == 42);
+            CHECK(j.template value<number_integer_t>(key2, 47) == 42);
+            CHECK(j.template value<number_integer_t>(key2, integer) == 42);
+            CHECK(j.template value<std::size_t>(key2, 0) == 42);
+            CHECK(j.template value<std::size_t>(key2, 47) == 42);
+            CHECK(j.template value<std::size_t>(key2, size) == 42);
+
+            CHECK(j.template value<string_t>(key_notfound, "default") == "default");
+            CHECK(j.template value<number_integer_t>(key_notfound, 0) == 0);
+            CHECK(j.template value<number_integer_t>(key_notfound, 47) == 47);
+            CHECK(j.template value<number_integer_t>(key_notfound, integer) == integer);
+            CHECK(j.template value<std::size_t>(key_notfound, 0) == 0);
+            CHECK(j.template value<std::size_t>(key_notfound, 47) == 47);
+            CHECK(j.template value<std::size_t>(key_notfound, size) == size);
+
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+
+        SECTION("const char(&)[] key")
+        {
+            const char key[] = "foo"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+            const char key2[] = "baz"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+            const char key_notfound[] = "bar"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+
+            CHECK(j.template value<string_t>(key, "default") == "bar");
+            CHECK(j.template value<string_t>(key, cpstr) == "bar");
+            CHECK(j.template value<string_t>(key, castr) == "bar");
+            CHECK(j.template value<string_t>(key, str) == "bar");
+            CHECK(j.template value<number_integer_t>(key2, 0) == 42);
+            CHECK(j.template value<number_integer_t>(key2, 47) == 42);
+            CHECK(j.template value<number_integer_t>(key2, integer) == 42);
+            CHECK(j.template value<std::size_t>(key2, 0) == 42);
+            CHECK(j.template value<std::size_t>(key2, 47) == 42);
+            CHECK(j.template value<std::size_t>(key2, size) == 42);
+
+            CHECK(j.template value<string_t>(key_notfound, "default") == "default");
+            CHECK(j.template value<number_integer_t>(key_notfound, 0) == 0);
+            CHECK(j.template value<number_integer_t>(key_notfound, 47) == 47);
+            CHECK(j.template value<number_integer_t>(key_notfound, integer) == integer);
+            CHECK(j.template value<std::size_t>(key_notfound, 0) == 0);
+            CHECK(j.template value<std::size_t>(key_notfound, 47) == 47);
+            CHECK(j.template value<std::size_t>(key_notfound, size) == size);
+
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+
+        SECTION("string_t/object_t::key_type key")
+        {
+            string_t const key = "foo";
+            string_t const key2 = "baz";
+            string_t const key_notfound = "bar";
+
+            CHECK(j.template value<string_t>(key, "default") == "bar");
+            CHECK(j.template value<string_t>(key, cpstr) == "bar");
+            CHECK(j.template value<string_t>(key, castr) == "bar");
+            CHECK(j.template value<string_t>(key, str) == "bar");
+            CHECK(j.template value<number_integer_t>(key2, 0) == 42);
+            CHECK(j.template value<number_integer_t>(key2, 47) == 42);
+            CHECK(j.template value<std::size_t>(key2, 0) == 42);
+            CHECK(j.template value<std::size_t>(key2, 47) == 42);
+
+            CHECK(j.template value<string_t>(key_notfound, "default") == "default");
+            CHECK(j.template value<number_integer_t>(key_notfound, 0) == 0);
+            CHECK(j.template value<number_integer_t>(key_notfound, 47) == 47);
+            CHECK(j.template value<std::size_t>(key_notfound, 0) == 0);
+            CHECK(j.template value<std::size_t>(key_notfound, 47) == 47);
+
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+
+#ifdef JSON_HAS_CPP_17
+        SECTION("std::string_view key")
+        {
+            std::string_view const key = "foo";
+            std::string_view const key2 = "baz";
+            std::string_view const key_notfound = "bar";
+
+            CHECK(j.template value<string_t>(key, "default") == "bar");
+            CHECK(j.template value<string_t>(key, cpstr) == "bar");
+            CHECK(j.template value<string_t>(key, castr) == "bar");
+            CHECK(j.template value<string_t>(key, str) == "bar");
+            CHECK(j.template value<number_integer_t>(key2, 0) == 42);
+            CHECK(j.template value<number_integer_t>(key2, 47) == 42);
+            CHECK(j.template value<number_integer_t>(key2, integer) == 42);
+            CHECK(j.template value<std::size_t>(key2, 0) == 42);
+            CHECK(j.template value<std::size_t>(key2, 47) == 42);
+            CHECK(j.template value<std::size_t>(key2, size) == 42);
+
+            CHECK(j.template value<string_t>(key_notfound, "default") == "default");
+            CHECK(j.template value<number_integer_t>(key_notfound, 0) == 0);
+            CHECK(j.template value<number_integer_t>(key_notfound, 47) == 47);
+            CHECK(j.template value<number_integer_t>(key_notfound, integer) == integer);
+            CHECK(j.template value<std::size_t>(key_notfound, 0) == 0);
+            CHECK(j.template value<std::size_t>(key_notfound, 47) == 47);
+            CHECK(j.template value<std::size_t>(key_notfound, size) == size);
+
+            CHECK(j.template value<std::string_view>(key, "default") == "bar");
+            CHECK(j.template value<std::string_view>(key, cpstr) == "bar");
+            CHECK(j.template value<std::string_view>(key, castr) == "bar");
+            CHECK(j.template value<std::string_view>(key, str) == "bar");
+
+            CHECK(j.template value<std::string_view>(key_notfound, "default") == "default");
+
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, "default"), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+            CHECK_THROWS_WITH_AS(Json().template value<string_t>(key, str), "[json.exception.type_error.306] cannot use value() with null", typename Json::type_error&);
+        }
+#endif
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-hash.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-hash.cpp
new file mode 100644
index 00000000..a6e524c6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-hash.cpp
@@ -0,0 +1,113 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using json = nlohmann::json;
+using ordered_json = nlohmann::ordered_json;
+
+#include <set>
+
+TEST_CASE("hash<nlohmann::json>")
+{
+    // Collect hashes for different JSON values and make sure that they are distinct
+    // We cannot compare against fixed values, because the implementation of
+    // std::hash may differ between compilers.
+
+    std::set<std::size_t> hashes;
+
+    // null
+    hashes.insert(std::hash<json> {}(json(nullptr)));
+
+    // boolean
+    hashes.insert(std::hash<json> {}(json(true)));
+    hashes.insert(std::hash<json> {}(json(false)));
+
+    // string
+    hashes.insert(std::hash<json> {}(json("")));
+    hashes.insert(std::hash<json> {}(json("foo")));
+
+    // number
+    hashes.insert(std::hash<json> {}(json(0)));
+    hashes.insert(std::hash<json> {}(json(static_cast<unsigned>(0))));
+
+    hashes.insert(std::hash<json> {}(json(-1)));
+    hashes.insert(std::hash<json> {}(json(0.0)));
+    hashes.insert(std::hash<json> {}(json(42.23)));
+
+    // array
+    hashes.insert(std::hash<json> {}(json::array()));
+    hashes.insert(std::hash<json> {}(json::array({1, 2, 3})));
+
+    // object
+    hashes.insert(std::hash<json> {}(json::object()));
+    hashes.insert(std::hash<json> {}(json::object({{"foo", "bar"}})));
+
+    // binary
+    hashes.insert(std::hash<json> {}(json::binary({})));
+    hashes.insert(std::hash<json> {}(json::binary({}, 0)));
+    hashes.insert(std::hash<json> {}(json::binary({}, 42)));
+    hashes.insert(std::hash<json> {}(json::binary({1, 2, 3})));
+    hashes.insert(std::hash<json> {}(json::binary({1, 2, 3}, 0)));
+    hashes.insert(std::hash<json> {}(json::binary({1, 2, 3}, 42)));
+
+    // discarded
+    hashes.insert(std::hash<json> {}(json(json::value_t::discarded)));
+
+    CHECK(hashes.size() == 21);
+}
+
+TEST_CASE("hash<nlohmann::ordered_json>")
+{
+    // Collect hashes for different JSON values and make sure that they are distinct
+    // We cannot compare against fixed values, because the implementation of
+    // std::hash may differ between compilers.
+
+    std::set<std::size_t> hashes;
+
+    // null
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(nullptr)));
+
+    // boolean
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(true)));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(false)));
+
+    // string
+    hashes.insert(std::hash<ordered_json> {}(ordered_json("")));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json("foo")));
+
+    // number
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(0)));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(static_cast<unsigned>(0))));
+
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(-1)));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(0.0)));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(42.23)));
+
+    // array
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::array()));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::array({1, 2, 3})));
+
+    // object
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::object()));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::object({{"foo", "bar"}})));
+
+    // binary
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({})));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({}, 0)));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({}, 42)));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3})));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3}, 0)));
+    hashes.insert(std::hash<ordered_json> {}(ordered_json::binary({1, 2, 3}, 42)));
+
+    // discarded
+    hashes.insert(std::hash<ordered_json> {}(ordered_json(ordered_json::value_t::discarded)));
+
+    CHECK(hashes.size() == 21);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-inspection.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-inspection.cpp
new file mode 100644
index 00000000..b7e73469
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-inspection.cpp
@@ -0,0 +1,459 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <sstream>
+#include "make_test_data_available.hpp"
+
+TEST_CASE("object inspection")
+{
+    SECTION("convenience type checker")
+    {
+        SECTION("object")
+        {
+            json const j {{"foo", 1}, {"bar", false}};
+            CHECK(!j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(!j.is_number());
+            CHECK(!j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(j.is_object());
+            CHECK(!j.is_array());
+            CHECK(!j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(!j.is_primitive());
+            CHECK(j.is_structured());
+        }
+
+        SECTION("array")
+        {
+            json const j {"foo", 1, 1u, 42.23, false};
+            CHECK(!j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(!j.is_number());
+            CHECK(!j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(j.is_array());
+            CHECK(!j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(!j.is_primitive());
+            CHECK(j.is_structured());
+        }
+
+        SECTION("null")
+        {
+            json const j(nullptr);
+            CHECK(j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(!j.is_number());
+            CHECK(!j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(!j.is_array());
+            CHECK(!j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(j.is_primitive());
+            CHECK(!j.is_structured());
+        }
+
+        SECTION("boolean")
+        {
+            json const j(true);
+            CHECK(!j.is_null());
+            CHECK(j.is_boolean());
+            CHECK(!j.is_number());
+            CHECK(!j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(!j.is_array());
+            CHECK(!j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(j.is_primitive());
+            CHECK(!j.is_structured());
+        }
+
+        SECTION("string")
+        {
+            json const j("Hello world");
+            CHECK(!j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(!j.is_number());
+            CHECK(!j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(!j.is_array());
+            CHECK(j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(j.is_primitive());
+            CHECK(!j.is_structured());
+        }
+
+        SECTION("number (integer)")
+        {
+            json const j(42);
+            CHECK(!j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(j.is_number());
+            CHECK(j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(!j.is_array());
+            CHECK(!j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(j.is_primitive());
+            CHECK(!j.is_structured());
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json const j(42u);
+            CHECK(!j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(j.is_number());
+            CHECK(j.is_number_integer());
+            CHECK(j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(!j.is_array());
+            CHECK(!j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(j.is_primitive());
+            CHECK(!j.is_structured());
+        }
+
+        SECTION("number (floating-point)")
+        {
+            json const j(42.23);
+            CHECK(!j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(j.is_number());
+            CHECK(!j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(!j.is_array());
+            CHECK(!j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(j.is_primitive());
+            CHECK(!j.is_structured());
+        }
+
+        SECTION("binary")
+        {
+            json const j(json::value_t::binary);
+            CHECK(!j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(!j.is_number());
+            CHECK(!j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(!j.is_array());
+            CHECK(!j.is_string());
+            CHECK(!j.is_discarded());
+            CHECK(j.is_primitive());
+            CHECK(!j.is_structured());
+        }
+
+        SECTION("discarded")
+        {
+            json const j(json::value_t::discarded);
+            CHECK(!j.is_null());
+            CHECK(!j.is_boolean());
+            CHECK(!j.is_number());
+            CHECK(!j.is_number_integer());
+            CHECK(!j.is_number_unsigned());
+            CHECK(!j.is_number_float());
+            CHECK(!j.is_binary());
+            CHECK(!j.is_object());
+            CHECK(!j.is_array());
+            CHECK(!j.is_string());
+            CHECK(j.is_discarded());
+            CHECK(!j.is_primitive());
+            CHECK(!j.is_structured());
+        }
+    }
+
+    SECTION("serialization")
+    {
+        json const j {{"object", json::object()}, {"array", {1, 2, 3, 4}}, {"number", 42}, {"boolean", false}, {"null", nullptr}, {"string", "Hello world"} };
+
+        SECTION("no indent / indent=-1")
+        {
+            CHECK(j.dump() ==
+                  "{\"array\":[1,2,3,4],\"boolean\":false,\"null\":null,\"number\":42,\"object\":{},\"string\":\"Hello world\"}");
+
+            CHECK(j.dump() == j.dump(-1));
+        }
+
+        SECTION("indent=0")
+        {
+            CHECK(j.dump(0) ==
+                  "{\n\"array\": [\n1,\n2,\n3,\n4\n],\n\"boolean\": false,\n\"null\": null,\n\"number\": 42,\n\"object\": {},\n\"string\": \"Hello world\"\n}");
+        }
+
+        SECTION("indent=1, space='\t'")
+        {
+            CHECK(j.dump(1, '\t') ==
+                  "{\n\t\"array\": [\n\t\t1,\n\t\t2,\n\t\t3,\n\t\t4\n\t],\n\t\"boolean\": false,\n\t\"null\": null,\n\t\"number\": 42,\n\t\"object\": {},\n\t\"string\": \"Hello world\"\n}");
+        }
+
+        SECTION("indent=4")
+        {
+            CHECK(j.dump(4) ==
+                  "{\n    \"array\": [\n        1,\n        2,\n        3,\n        4\n    ],\n    \"boolean\": false,\n    \"null\": null,\n    \"number\": 42,\n    \"object\": {},\n    \"string\": \"Hello world\"\n}");
+        }
+
+        SECTION("indent=x")
+        {
+            CHECK(j.dump().size() == 94);
+            CHECK(j.dump(1).size() == 127);
+            CHECK(j.dump(2).size() == 142);
+            CHECK(j.dump(512).size() == 7792);
+
+            // important test, because it yields a resize of the indent_string
+            // inside the dump() function
+            CHECK(j.dump(1024).size() == 15472);
+
+            const auto binary = json::binary({1, 2, 3}, 128);
+            CHECK(binary.dump(1024).size() == 2086);
+        }
+
+        SECTION("dump and floating-point numbers")
+        {
+            auto s = json(42.23).dump();
+            CHECK(s.find("42.23") != std::string::npos);
+        }
+
+        SECTION("dump and small floating-point numbers")
+        {
+            auto s = json(1.23456e-78).dump();
+            CHECK(s.find("1.23456e-78") != std::string::npos);
+        }
+
+        SECTION("dump and non-ASCII characters")
+        {
+            CHECK(json("ä").dump() == "\"ä\"");
+            CHECK(json("Ö").dump() == "\"Ö\"");
+            CHECK(json("❤️").dump() == "\"❤️\"");
+        }
+
+        SECTION("dump with ensure_ascii and non-ASCII characters")
+        {
+            CHECK(json("ä").dump(-1, ' ', true) == "\"\\u00e4\"");
+            CHECK(json("Ö").dump(-1, ' ', true) == "\"\\u00d6\"");
+            CHECK(json("❤️").dump(-1, ' ', true) == "\"\\u2764\\ufe0f\"");
+        }
+
+        SECTION("full Unicode escaping to ASCII")
+        {
+            SECTION("parsing yields the same JSON value")
+            {
+                std::ifstream f_escaped(TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode_ascii.json");
+                std::ifstream f_unescaped(TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json");
+
+                json j1 = json::parse(f_escaped);
+                json j2 = json::parse(f_unescaped);
+                CHECK(j1 == j2);
+            }
+
+            SECTION("dumping yields the same JSON text")
+            {
+                std::ifstream f_escaped(TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode_ascii.json");
+                std::ifstream f_unescaped(TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json");
+
+                json const value = json::parse(f_unescaped);
+                std::string text = value.dump(4, ' ', true);
+
+                std::string expected((std::istreambuf_iterator<char>(f_escaped)),
+                                     std::istreambuf_iterator<char>());
+                CHECK(text == expected);
+            }
+        }
+
+        SECTION("serialization of discarded element")
+        {
+            json const j_discarded(json::value_t::discarded);
+            CHECK(j_discarded.dump() == "<discarded>");
+        }
+
+        SECTION("check that precision is reset after serialization")
+        {
+            // create stringstream and set precision
+            std::stringstream ss;
+            ss.precision(3);
+            ss << 3.141592653589793 << std::fixed;
+            CHECK(ss.str() == "3.14");
+
+            // reset stringstream
+            ss.str(std::string());
+
+            // use stringstream for JSON serialization
+            json const j_number = 3.14159265358979;
+            ss << j_number;
+
+            // check that precision has been overridden during serialization
+            CHECK(ss.str() == "3.14159265358979");
+
+            // check that precision has been restored
+            CHECK(ss.precision() == 3);
+        }
+    }
+
+    SECTION("round trips")
+    {
+        for (const auto& s :
+                {"3.141592653589793", "1000000000000000010E5"
+                })
+        {
+            json const j1 = json::parse(s);
+            std::string s1 = j1.dump();
+            json const j2 = json::parse(s1);
+            std::string s2 = j2.dump();
+            CHECK(s1 == s2);
+        }
+    }
+
+    SECTION("return the type of the object (explicit)")
+    {
+        SECTION("null")
+        {
+            json const j = nullptr;
+            CHECK(j.type() == json::value_t::null);
+        }
+
+        SECTION("object")
+        {
+            json const j = {{"foo", "bar"}};
+            CHECK(j.type() == json::value_t::object);
+        }
+
+        SECTION("array")
+        {
+            json const j = {1, 2, 3, 4};
+            CHECK(j.type() == json::value_t::array);
+        }
+
+        SECTION("boolean")
+        {
+            json const j = true;
+            CHECK(j.type() == json::value_t::boolean);
+        }
+
+        SECTION("string")
+        {
+            json const j = "Hello world";
+            CHECK(j.type() == json::value_t::string);
+        }
+
+        SECTION("number (integer)")
+        {
+            json const j = 23;
+            CHECK(j.type() == json::value_t::number_integer);
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json const j = 23u;
+            CHECK(j.type() == json::value_t::number_unsigned);
+        }
+
+        SECTION("number (floating-point)")
+        {
+            json const j = 42.23;
+            CHECK(j.type() == json::value_t::number_float);
+        }
+    }
+
+    SECTION("return the type of the object (implicit)")
+    {
+        SECTION("null")
+        {
+            json const j = nullptr;
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+
+        SECTION("object")
+        {
+            json const j = {{"foo", "bar"}};
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+
+        SECTION("array")
+        {
+            json const j = {1, 2, 3, 4};
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+
+        SECTION("boolean")
+        {
+            json const j = true;
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+
+        SECTION("string")
+        {
+            json const j = "Hello world";
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+
+        SECTION("number (integer)")
+        {
+            json const j = 23;
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json const j = 23u;
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+
+        SECTION("number (floating-point)")
+        {
+            json const j = 42.23;
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+
+        SECTION("binary")
+        {
+            json const j = json::binary({});
+            json::value_t t = j;
+            CHECK(t == j.type());
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-items.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-items.cpp
new file mode 100644
index 00000000..7544f01d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-items.cpp
@@ -0,0 +1,1433 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+// This test suite uses range for loops where values are copied. This is inefficient in usual code, but required to achieve 100% coverage.
+DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+#if DOCTEST_GCC >= DOCTEST_COMPILER(11, 0, 0)
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wrange-loop-construct")
+#endif
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wrange-loop-construct")
+
+TEST_CASE("iterator_wrapper")
+{
+    SECTION("object")
+    {
+        SECTION("value")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("reference")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (auto& i : json::iterator_wrapper(j)) // NOLINT(readability-qualified-auto)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+
+                        // change the value
+                        i.value() = json(11);
+                        CHECK(i.value() == json(11));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+
+                        // change the value
+                        i.value() = json(22);
+                        CHECK(i.value() == json(22));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+
+            // check if values where changed
+            CHECK(j == json({ {"A", 11}, {"B", 22} }));
+        }
+
+        SECTION("const value")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (const auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const reference")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (const auto& i : json::iterator_wrapper(j))
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+    }
+
+    SECTION("const object")
+    {
+        SECTION("value")
+        {
+            const json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("reference")
+        {
+            const json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (auto& i : json::iterator_wrapper(j)) // NOLINT(readability-qualified-auto)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const value")
+        {
+            const json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (const auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const reference")
+        {
+            const json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (const auto& i : json::iterator_wrapper(j))
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+    }
+
+    SECTION("array")
+    {
+        SECTION("value")
+        {
+            json j = { "A", "B" };
+            int counter = 1;
+
+            for (auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("reference")
+        {
+            json j = { "A", "B" };
+            int counter = 1;
+
+            for (auto& i : json::iterator_wrapper(j)) // NOLINT(readability-qualified-auto)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+
+                        // change the value
+                        i.value() = "AA";
+                        CHECK(i.value() == "AA");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+
+                        // change the value
+                        i.value() = "BB";
+                        CHECK(i.value() == "BB");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+
+            // check if values where changed
+            CHECK(j == json({ "AA", "BB" }));
+        }
+
+        SECTION("const value")
+        {
+            json j = { "A", "B" };
+            int counter = 1;
+
+            for (const auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const reference")
+        {
+            json j = { "A", "B" };
+            int counter = 1;
+
+            for (const auto& i : json::iterator_wrapper(j))
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+    }
+
+    SECTION("const array")
+    {
+        SECTION("value")
+        {
+            const json j = { "A", "B" };
+            int counter = 1;
+
+            for (auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("reference")
+        {
+            const json j = { "A", "B" };
+            int counter = 1;
+
+            for (auto& i : json::iterator_wrapper(j)) // NOLINT(readability-qualified-auto)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const value")
+        {
+            const json j = { "A", "B" };
+            int counter = 1;
+
+            for (const auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const reference")
+        {
+            const json j = { "A", "B" };
+            int counter = 1;
+
+            for (const auto& i : json::iterator_wrapper(j))
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+    }
+
+    SECTION("primitive")
+    {
+        SECTION("value")
+        {
+            json j = 1;
+            int counter = 1;
+
+            for (auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("reference")
+        {
+            json j = 1;
+            int counter = 1;
+
+            for (auto& i : json::iterator_wrapper(j)) // NOLINT(readability-qualified-auto)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+
+                // change value
+                i.value() = json(2);
+            }
+
+            CHECK(counter == 2);
+
+            // check if value has changed
+            CHECK(j == json(2));
+        }
+
+        SECTION("const value")
+        {
+            json j = 1;
+            int counter = 1;
+
+            for (const auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("const reference")
+        {
+            json j = 1;
+            int counter = 1;
+
+            for (const auto& i : json::iterator_wrapper(j))
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+    }
+
+    SECTION("const primitive")
+    {
+        SECTION("value")
+        {
+            const json j = 1;
+            int counter = 1;
+
+            for (auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("reference")
+        {
+            const json j = 1;
+            int counter = 1;
+
+            for (auto& i : json::iterator_wrapper(j)) // NOLINT(readability-qualified-auto)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("const value")
+        {
+            const json j = 1;
+            int counter = 1;
+
+            for (const auto i : json::iterator_wrapper(j)) // NOLINT(performance-for-range-copy)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("const reference")
+        {
+            const json j = 1;
+            int counter = 1;
+
+            for (const auto& i : json::iterator_wrapper(j))
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+    }
+}
+
+TEST_CASE("items()")
+{
+    SECTION("object")
+    {
+        SECTION("value")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("reference")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (auto& i : j.items()) // NOLINT(readability-qualified-auto)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+
+                        // change the value
+                        i.value() = json(11);
+                        CHECK(i.value() == json(11));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+
+                        // change the value
+                        i.value() = json(22);
+                        CHECK(i.value() == json(22));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+
+            // check if values where changed
+            CHECK(j == json({ {"A", 11}, {"B", 22} }));
+        }
+
+        SECTION("const value")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (const auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const reference")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (const auto& i : j.items())
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+#ifdef JSON_HAS_CPP_17
+        SECTION("structured bindings")
+        {
+            json j = { {"A", 1}, {"B", 2} };
+
+            std::map<std::string, int> m;
+
+            for (auto const&[key, value] : j.items())
+            {
+                m.emplace(key, value);
+            }
+
+            CHECK(j.get<decltype(m)>() == m);
+        }
+#endif
+    }
+
+    SECTION("const object")
+    {
+        SECTION("value")
+        {
+            const json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("reference")
+        {
+            const json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (auto& i : j.items()) // NOLINT(readability-qualified-auto)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const value")
+        {
+            const json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (const auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const reference")
+        {
+            const json j = { {"A", 1}, {"B", 2} };
+            int counter = 1;
+
+            for (const auto& i : j.items())
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "A");
+                        CHECK(i.value() == json(1));
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "B");
+                        CHECK(i.value() == json(2));
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+    }
+
+    SECTION("array")
+    {
+        SECTION("value")
+        {
+            json j = { "A", "B" };
+            int counter = 1;
+
+            for (auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("reference")
+        {
+            json j = { "A", "B" };
+            int counter = 1;
+
+            for (auto& i : j.items()) // NOLINT(readability-qualified-auto)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+
+                        // change the value
+                        i.value() = "AA";
+                        CHECK(i.value() == "AA");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+
+                        // change the value
+                        i.value() = "BB";
+                        CHECK(i.value() == "BB");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+
+            // check if values where changed
+            CHECK(j == json({ "AA", "BB" }));
+        }
+
+        SECTION("const value")
+        {
+            json j = { "A", "B" };
+            int counter = 1;
+
+            for (const auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const reference")
+        {
+            json j = { "A", "B" };
+            int counter = 1;
+
+            for (const auto& i : j.items())
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+    }
+
+    SECTION("const array")
+    {
+        SECTION("value")
+        {
+            const json j = { "A", "B" };
+            int counter = 1;
+
+            for (auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("reference")
+        {
+            const json j = { "A", "B" };
+            int counter = 1;
+
+            for (auto& i : j.items()) // NOLINT(readability-qualified-auto)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const value")
+        {
+            const json j = { "A", "B" };
+            int counter = 1;
+
+            for (const auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+
+        SECTION("const reference")
+        {
+            const json j = { "A", "B" };
+            int counter = 1;
+
+            for (const auto& i : j.items())
+            {
+                switch (counter++)
+                {
+                    case 1:
+                    {
+                        CHECK(i.key() == "0");
+                        CHECK(i.value() == "A");
+                        break;
+                    }
+
+                    case 2:
+                    {
+                        CHECK(i.key() == "1");
+                        CHECK(i.value() == "B");
+                        break;
+                    }
+
+                    default:
+                    {
+                        break;
+                    }
+                }
+            }
+
+            CHECK(counter == 3);
+        }
+    }
+
+    SECTION("primitive")
+    {
+        SECTION("value")
+        {
+            json j = 1;
+            int counter = 1;
+
+            for (auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("reference")
+        {
+            json j = 1;
+            int counter = 1;
+
+            for (auto& i : j.items()) // NOLINT(readability-qualified-auto)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+
+                // change value
+                i.value() = json(2);
+            }
+
+            CHECK(counter == 2);
+
+            // check if value has changed
+            CHECK(j == json(2));
+        }
+
+        SECTION("const value")
+        {
+            json j = 1;
+            int counter = 1;
+
+            for (const auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("const reference")
+        {
+            json j = 1;
+            int counter = 1;
+
+            for (const auto& i : j.items())
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+    }
+
+    SECTION("const primitive")
+    {
+        SECTION("value")
+        {
+            const json j = 1;
+            int counter = 1;
+
+            for (auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("reference")
+        {
+            const json j = 1;
+            int counter = 1;
+
+            for (auto& i : j.items()) // NOLINT(readability-qualified-auto)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("const value")
+        {
+            const json j = 1;
+            int counter = 1;
+
+            for (const auto i : j.items()) // NOLINT(performance-for-range-copy)
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+
+        SECTION("const reference")
+        {
+            const json j = 1;
+            int counter = 1;
+
+            for (const auto& i : j.items())
+            {
+                ++counter;
+                CHECK(i.key() == "");
+                CHECK(i.value() == json(1));
+            }
+
+            CHECK(counter == 2);
+        }
+    }
+}
+
+DOCTEST_GCC_SUPPRESS_WARNING_POP
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators1.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators1.cpp
new file mode 100644
index 00000000..49361edc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators1.cpp
@@ -0,0 +1,1630 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("iterators 1")
+{
+    SECTION("basic behavior")
+    {
+        SECTION("uninitialized")
+        {
+            json::iterator it;
+            CHECK(it.m_object == nullptr);
+
+            json::const_iterator cit;
+            CHECK(cit.m_object == nullptr);
+        }
+
+        SECTION("boolean")
+        {
+            json j = true;
+            json j_const(j);
+
+            SECTION("json + begin/end")
+            {
+                json::iterator it = j.begin();
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                it--;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                --it;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + begin/end")
+            {
+                json::const_iterator it = j_const.begin();
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                it--;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                --it;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + cbegin/cend")
+            {
+                json::const_iterator it = j.cbegin();
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                it--;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                --it;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + cbegin/cend")
+            {
+                json::const_iterator it = j_const.cbegin();
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                it--;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                --it;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + rbegin/rend")
+            {
+                json::reverse_iterator it = j.rbegin();
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                it--;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                --it;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+            }
+
+            SECTION("json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j.crbegin();
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                it--;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                --it;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j_const.crbegin();
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                it--;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                --it;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("additional tests")
+            {
+                SECTION("!(begin != begin)")
+                {
+                    CHECK(!(j.begin() != j.begin()));
+                }
+
+                SECTION("!(end != end)")
+                {
+                    CHECK(!(j.end() != j.end()));
+                }
+
+                SECTION("begin < end")
+                {
+                    CHECK(j.begin() < j.end());
+                }
+
+                SECTION("begin <= end")
+                {
+                    CHECK(j.begin() <= j.end());
+                }
+
+                SECTION("end > begin")
+                {
+                    CHECK(j.end() > j.begin());
+                }
+
+                SECTION("end >= begin")
+                {
+                    CHECK(j.end() >= j.begin());
+                }
+
+                SECTION("end == end")
+                {
+                    CHECK(j.end() == j.end());
+                }
+
+                SECTION("end <= end")
+                {
+                    CHECK(j.end() <= j.end());
+                }
+
+                SECTION("begin == begin")
+                {
+                    CHECK(j.begin() == j.begin());
+                }
+
+                SECTION("begin <= begin")
+                {
+                    CHECK(j.begin() <= j.begin());
+                }
+
+                SECTION("begin >= begin")
+                {
+                    CHECK(j.begin() >= j.begin());
+                }
+
+                SECTION("!(begin == end)")
+                {
+                    CHECK(!(j.begin() == j.end()));
+                }
+
+                SECTION("begin != end")
+                {
+                    CHECK(j.begin() != j.end());
+                }
+
+                SECTION("begin+1 == end")
+                {
+                    CHECK(j.begin() + 1 == j.end());
+                }
+
+                SECTION("begin == end-1")
+                {
+                    CHECK(j.begin() == j.end() - 1);
+                }
+
+                SECTION("begin != end+1")
+                {
+                    CHECK(j.begin() != j.end() + 1);
+                }
+
+                SECTION("end != end+1")
+                {
+                    CHECK(j.end() != j.end() + 1);
+                }
+
+                SECTION("begin+1 != begin+2")
+                {
+                    CHECK(j.begin() + 1 != j.begin() + 2);
+                }
+
+                SECTION("begin+1 < begin+2")
+                {
+                    CHECK(j.begin() + 1 < j.begin() + 2);
+                }
+
+                SECTION("begin+1 <= begin+2")
+                {
+                    CHECK(j.begin() + 1 <= j.begin() + 2);
+                }
+
+                SECTION("end+1 != end+2")
+                {
+                    CHECK(j.end() + 1 != j.end() + 2);
+                }
+            }
+
+            SECTION("key/value")
+            {
+                auto it = j.begin();
+                auto cit = j_const.cbegin();
+                CHECK_THROWS_WITH_AS(it.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(it.value() == json(true));
+                CHECK_THROWS_WITH_AS(cit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(cit.value() == json(true));
+
+                auto rit = j.rend();
+                auto crit = j.crend();
+                CHECK_THROWS_WITH_AS(rit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(rit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+        }
+
+        SECTION("string")
+        {
+            json j = "hello world";
+            json j_const(j);
+
+            SECTION("json + begin/end")
+            {
+                json::iterator it = j.begin();
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                it--;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                --it;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + begin/end")
+            {
+                json::const_iterator it = j_const.begin();
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                it--;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                --it;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + cbegin/cend")
+            {
+                json::const_iterator it = j.cbegin();
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                it--;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                --it;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + cbegin/cend")
+            {
+                json::const_iterator it = j_const.cbegin();
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                it--;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                --it;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + rbegin/rend")
+            {
+                json::reverse_iterator it = j.rbegin();
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                it--;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                --it;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+            }
+
+            SECTION("json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j.crbegin();
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                it--;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                --it;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j_const.crbegin();
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                it--;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                --it;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("key/value")
+            {
+                auto it = j.begin();
+                auto cit = j_const.cbegin();
+                CHECK_THROWS_WITH_AS(it.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(it.value() == json("hello world"));
+                CHECK_THROWS_WITH_AS(cit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(cit.value() == json("hello world"));
+
+                auto rit = j.rend();
+                auto crit = j.crend();
+                CHECK_THROWS_WITH_AS(rit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(rit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+        }
+
+        SECTION("array")
+        {
+            json j = {1, 2, 3};
+            json j_const(j);
+
+            SECTION("json + begin/end")
+            {
+                json::iterator it_begin = j.begin();
+                json::iterator it_end = j.end();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j[0]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[1]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[2]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("const json + begin/end")
+            {
+                json::const_iterator it_begin = j_const.begin();
+                json::const_iterator it_end = j_const.end();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j_const[0]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j_const[1]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j_const[2]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("json + cbegin/cend")
+            {
+                json::const_iterator it_begin = j.cbegin();
+                json::const_iterator it_end = j.cend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j[0]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[1]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[2]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("const json + cbegin/cend")
+            {
+                json::const_iterator it_begin = j_const.cbegin();
+                json::const_iterator it_end = j_const.cend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j[0]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[1]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[2]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("json + rbegin/rend")
+            {
+                json::reverse_iterator it_begin = j.rbegin();
+                json::reverse_iterator it_end = j.rend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j[2]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[1]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[0]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("json + crbegin/crend")
+            {
+                json::const_reverse_iterator it_begin = j.crbegin();
+                json::const_reverse_iterator it_end = j.crend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j[2]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[1]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[0]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("const json + crbegin/crend")
+            {
+                json::const_reverse_iterator it_begin = j_const.crbegin();
+                json::const_reverse_iterator it_end = j_const.crend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j[2]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[1]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j[0]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("key/value")
+            {
+                auto it = j.begin();
+                auto cit = j_const.cbegin();
+                CHECK_THROWS_WITH_AS(it.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(it.value() == json(1));
+                CHECK_THROWS_WITH_AS(cit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(cit.value() == json(1));
+            }
+        }
+
+        SECTION("object")
+        {
+            json j = {{"A", 1}, {"B", 2}, {"C", 3}};
+            json j_const(j);
+
+            SECTION("json + begin/end")
+            {
+                json::iterator it_begin = j.begin();
+                json::iterator it_end = j.end();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j["A"]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["B"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["C"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("const json + begin/end")
+            {
+                json::const_iterator it_begin = j_const.begin();
+                json::const_iterator it_end = j_const.end();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j_const["A"]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j_const["B"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j_const["C"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("json + cbegin/cend")
+            {
+                json::const_iterator it_begin = j.cbegin();
+                json::const_iterator it_end = j.cend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j["A"]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["B"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["C"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("const json + cbegin/cend")
+            {
+                json::const_iterator it_begin = j_const.cbegin();
+                json::const_iterator it_end = j_const.cend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j_const["A"]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j_const["B"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j_const["C"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("json + rbegin/rend")
+            {
+                json::reverse_iterator it_begin = j.rbegin();
+                json::reverse_iterator it_end = j.rend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j["C"]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["B"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["A"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("json + crbegin/crend")
+            {
+                json::const_reverse_iterator it_begin = j.crbegin();
+                json::const_reverse_iterator it_end = j.crend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j["C"]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["B"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["A"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("const json + crbegin/crend")
+            {
+                json::const_reverse_iterator it_begin = j_const.crbegin();
+                json::const_reverse_iterator it_end = j_const.crend();
+
+                auto it = it_begin;
+                CHECK(it != it_end);
+                CHECK(*it == j["C"]);
+
+                it++;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["B"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it != it_end);
+                CHECK(*it == j["A"]);
+
+                ++it;
+                CHECK(it != it_begin);
+                CHECK(it == it_end);
+            }
+
+            SECTION("key/value")
+            {
+                auto it = j.begin();
+                auto cit = j_const.cbegin();
+                CHECK(it.key() == "A");
+                CHECK(it.value() == json(1));
+                CHECK(cit.key() == "A");
+                CHECK(cit.value() == json(1));
+            }
+        }
+
+        SECTION("number (integer)")
+        {
+            json j = 23;
+            json j_const(j);
+
+            SECTION("json + begin/end")
+            {
+                json::iterator it = j.begin();
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                it--;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                --it;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + begin/end")
+            {
+                json::const_iterator it = j_const.begin();
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                it--;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                --it;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + cbegin/cend")
+            {
+                json::const_iterator it = j.cbegin();
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                it--;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                --it;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + cbegin/cend")
+            {
+                json::const_iterator it = j_const.cbegin();
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                it--;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                --it;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + rbegin/rend")
+            {
+                json::reverse_iterator it = j.rbegin();
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                it--;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                --it;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+            }
+
+            SECTION("json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j.crbegin();
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                it--;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                --it;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j_const.crbegin();
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                it--;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                --it;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("key/value")
+            {
+                auto it = j.begin();
+                auto cit = j_const.cbegin();
+                CHECK_THROWS_WITH_AS(it.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(it.value() == json(23));
+                CHECK_THROWS_WITH_AS(cit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(cit.value() == json(23));
+
+                auto rit = j.rend();
+                auto crit = j.crend();
+                CHECK_THROWS_WITH_AS(rit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(rit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json j = 23u;
+            json j_const(j);
+
+            SECTION("json + begin/end")
+            {
+                json::iterator it = j.begin();
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                it--;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                --it;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + begin/end")
+            {
+                json::const_iterator it = j_const.begin();
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                it--;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                --it;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + cbegin/cend")
+            {
+                json::const_iterator it = j.cbegin();
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                it--;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                --it;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + cbegin/cend")
+            {
+                json::const_iterator it = j_const.cbegin();
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                it--;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                --it;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + rbegin/rend")
+            {
+                json::reverse_iterator it = j.rbegin();
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                it--;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                --it;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+            }
+
+            SECTION("json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j.crbegin();
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                it--;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                --it;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j_const.crbegin();
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                it--;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                --it;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("key/value")
+            {
+                auto it = j.begin();
+                auto cit = j_const.cbegin();
+                CHECK_THROWS_WITH_AS(it.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(it.value() == json(23));
+                CHECK_THROWS_WITH_AS(cit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(cit.value() == json(23));
+
+                auto rit = j.rend();
+                auto crit = j.crend();
+                CHECK_THROWS_WITH_AS(rit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(rit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+        }
+
+        SECTION("number (float)")
+        {
+            json j = 23.42;
+            json j_const(j);
+
+            SECTION("json + begin/end")
+            {
+                json::iterator it = j.begin();
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                it--;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.begin());
+                CHECK(it == j.end());
+
+                --it;
+                CHECK(it == j.begin());
+                CHECK(it != j.end());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + begin/end")
+            {
+                json::const_iterator it = j_const.begin();
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                it--;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.begin());
+                CHECK(it == j_const.end());
+
+                --it;
+                CHECK(it == j_const.begin());
+                CHECK(it != j_const.end());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + cbegin/cend")
+            {
+                json::const_iterator it = j.cbegin();
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                it--;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.cbegin());
+                CHECK(it == j.cend());
+
+                --it;
+                CHECK(it == j.cbegin());
+                CHECK(it != j.cend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + cbegin/cend")
+            {
+                json::const_iterator it = j_const.cbegin();
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                it--;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.cbegin());
+                CHECK(it == j_const.cend());
+
+                --it;
+                CHECK(it == j_const.cbegin());
+                CHECK(it != j_const.cend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("json + rbegin/rend")
+            {
+                json::reverse_iterator it = j.rbegin();
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                it--;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.rbegin());
+                CHECK(it == j.rend());
+
+                --it;
+                CHECK(it == j.rbegin());
+                CHECK(it != j.rend());
+                CHECK(*it == j);
+            }
+
+            SECTION("json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j.crbegin();
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                it++;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                it--;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+
+                ++it;
+                CHECK(it != j.crbegin());
+                CHECK(it == j.crend());
+
+                --it;
+                CHECK(it == j.crbegin());
+                CHECK(it != j.crend());
+                CHECK(*it == j);
+            }
+
+            SECTION("const json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j_const.crbegin();
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                it++;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                it--;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+
+                ++it;
+                CHECK(it != j_const.crbegin());
+                CHECK(it == j_const.crend());
+
+                --it;
+                CHECK(it == j_const.crbegin());
+                CHECK(it != j_const.crend());
+                CHECK(*it == j_const);
+            }
+
+            SECTION("key/value")
+            {
+                auto it = j.begin();
+                auto cit = j_const.cbegin();
+                CHECK_THROWS_WITH_AS(it.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(it.value() == json(23.42));
+                CHECK_THROWS_WITH_AS(cit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK(cit.value() == json(23.42));
+
+                auto rit = j.rend();
+                auto crit = j.crend();
+                CHECK_THROWS_WITH_AS(rit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(rit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+        }
+
+        SECTION("null")
+        {
+            json j = nullptr;
+            json j_const(j);
+
+            SECTION("json + begin/end")
+            {
+                json::iterator it = j.begin();
+                CHECK(it == j.end());
+            }
+
+            SECTION("const json + begin/end")
+            {
+                json::const_iterator it_begin = j_const.begin();
+                json::const_iterator it_end = j_const.end();
+                CHECK(it_begin == it_end);
+            }
+
+            SECTION("json + cbegin/cend")
+            {
+                json::const_iterator it_begin = j.cbegin();
+                json::const_iterator it_end = j.cend();
+                CHECK(it_begin == it_end);
+            }
+
+            SECTION("const json + cbegin/cend")
+            {
+                json::const_iterator it_begin = j_const.cbegin();
+                json::const_iterator it_end = j_const.cend();
+                CHECK(it_begin == it_end);
+            }
+
+            SECTION("json + rbegin/rend")
+            {
+                json::reverse_iterator it = j.rbegin();
+                CHECK(it == j.rend());
+            }
+
+            SECTION("json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j.crbegin();
+                CHECK(it == j.crend());
+            }
+
+            SECTION("const json + crbegin/crend")
+            {
+                json::const_reverse_iterator it = j_const.crbegin();
+                CHECK(it == j_const.crend());
+            }
+
+            SECTION("key/value")
+            {
+                auto it = j.begin();
+                auto cit = j_const.cbegin();
+                CHECK_THROWS_WITH_AS(it.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(it.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(cit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(cit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+
+                auto rit = j.rend();
+                auto crit = j.crend();
+                CHECK_THROWS_WITH_AS(rit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(rit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.key(), "[json.exception.invalid_iterator.207] cannot use key() for non-object iterators", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(crit.value(), "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+            }
+        }
+    }
+
+    SECTION("conversion from iterator to const iterator")
+    {
+        SECTION("boolean")
+        {
+            json j = true;
+            json::const_iterator it = j.begin();
+            CHECK(it == j.cbegin());
+            it = j.begin();
+            CHECK(it == j.cbegin());
+        }
+        SECTION("string")
+        {
+            json j = "hello world";
+            json::const_iterator it = j.begin();
+            CHECK(it == j.cbegin());
+            it = j.begin();
+            CHECK(it == j.cbegin());
+        }
+        SECTION("array")
+        {
+            json j = {1, 2, 3};
+            json::const_iterator it = j.begin();
+            CHECK(it == j.cbegin());
+            it = j.begin();
+            CHECK(it == j.cbegin());
+        }
+        SECTION("object")
+        {
+            json j = {{"A", 1}, {"B", 2}, {"C", 3}};
+            json::const_iterator it = j.begin();
+            CHECK(it == j.cbegin());
+            it = j.begin();
+            CHECK(it == j.cbegin());
+        }
+        SECTION("number (integer)")
+        {
+            json j = 23;
+            json::const_iterator it = j.begin();
+            CHECK(it == j.cbegin());
+            it = j.begin();
+            CHECK(it == j.cbegin());
+        }
+        SECTION("number (unsigned)")
+        {
+            json j = 23u;
+            json::const_iterator it = j.begin();
+            CHECK(it == j.cbegin());
+            it = j.begin();
+            CHECK(it == j.cbegin());
+        }
+        SECTION("number (float)")
+        {
+            json j = 23.42;
+            json::const_iterator it = j.begin();
+            CHECK(it == j.cbegin());
+            it = j.begin();
+            CHECK(it == j.cbegin());
+        }
+        SECTION("null")
+        {
+            json j = nullptr;
+            json::const_iterator it = j.begin();
+            CHECK(it == j.cbegin());
+            it = j.begin();
+            CHECK(it == j.cbegin());
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators2.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators2.cpp
new file mode 100644
index 00000000..85cd5bbf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators2.cpp
@@ -0,0 +1,971 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+// cmake/test.cmake selects the C++ standard versions with which to build a
+// unit test based on the presence of JSON_HAS_CPP_<VERSION> macros.
+// When using macros that are only defined for particular versions of the standard
+// (e.g., JSON_HAS_FILESYSTEM for C++17 and up), please mention the corresponding
+// version macro in a comment close by, like this:
+// JSON_HAS_CPP_<VERSION> (do not remove; see note at top of file)
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#if JSON_HAS_RANGES
+    #include <algorithm>
+    #include <ranges>
+#endif
+
+TEST_CASE("iterators 2")
+{
+    SECTION("iterator comparisons")
+    {
+        json j_values = {nullptr, true, 42, 42u, 23.23, {{"one", 1}, {"two", 2}}, {1, 2, 3, 4, 5}, "Hello, world"};
+
+        for (json& j : j_values)
+        {
+            auto it1 = j.begin();
+            auto it2 = j.begin();
+            auto it3 = j.begin();
+            ++it2;
+            ++it3;
+            ++it3;
+            auto it1_c = j.cbegin();
+            auto it2_c = j.cbegin();
+            auto it3_c = j.cbegin();
+            ++it2_c;
+            ++it3_c;
+            ++it3_c;
+
+            // comparison: equal
+            {
+                CHECK(it1 == it1);
+                CHECK(!(it1 == it2));
+                CHECK(!(it1 == it3));
+                CHECK(!(it2 == it3));
+                CHECK(it1_c == it1_c);
+                CHECK(!(it1_c == it2_c));
+                CHECK(!(it1_c == it3_c));
+                CHECK(!(it2_c == it3_c));
+            }
+
+            // comparison: not equal
+            {
+                // check definition
+                CHECK( (it1 != it1) == !(it1 == it1) );
+                CHECK( (it1 != it2) == !(it1 == it2) );
+                CHECK( (it1 != it3) == !(it1 == it3) );
+                CHECK( (it2 != it3) == !(it2 == it3) );
+                CHECK( (it1_c != it1_c) == !(it1_c == it1_c) );
+                CHECK( (it1_c != it2_c) == !(it1_c == it2_c) );
+                CHECK( (it1_c != it3_c) == !(it1_c == it3_c) );
+                CHECK( (it2_c != it3_c) == !(it2_c == it3_c) );
+            }
+
+            // comparison: smaller
+            {
+                if (j.type() == json::value_t::object)
+                {
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_AS(it1 < it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 < it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c < it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+#else
+                    CHECK_THROWS_WITH_AS(it1 < it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 < it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c < it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+#endif
+                }
+                else
+                {
+                    CHECK(!(it1 < it1));
+                    CHECK(it1 < it2);
+                    CHECK(it1 < it3);
+                    CHECK(it2 < it3);
+                    CHECK(!(it1_c < it1_c));
+                    CHECK(it1_c < it2_c);
+                    CHECK(it1_c < it3_c);
+                    CHECK(it2_c < it3_c);
+                }
+            }
+
+            // comparison: less than or equal
+            {
+                if (j.type() == json::value_t::object)
+                {
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_AS(it1 <= it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 <= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c <= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+#else
+                    CHECK_THROWS_WITH_AS(it1 <= it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 <= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c <= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+#endif
+                }
+                else
+                {
+                    // check definition
+                    CHECK( (it1 <= it1) == !(it1 < it1) );
+                    CHECK( (it1 <= it2) == !(it2 < it1) );
+                    CHECK( (it1 <= it3) == !(it3 < it1) );
+                    CHECK( (it2 <= it3) == !(it3 < it2) );
+                    CHECK( (it1_c <= it1_c) == !(it1_c < it1_c) );
+                    CHECK( (it1_c <= it2_c) == !(it2_c < it1_c) );
+                    CHECK( (it1_c <= it3_c) == !(it3_c < it1_c) );
+                    CHECK( (it2_c <= it3_c) == !(it3_c < it2_c) );
+                }
+            }
+
+            // comparison: greater than
+            {
+                if (j.type() == json::value_t::object)
+                {
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_AS(it1 > it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 > it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c > it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+#else
+                    CHECK_THROWS_WITH_AS(it1 > it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 > it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c > it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+#endif
+                }
+                else
+                {
+                    // check definition
+                    CHECK( (it1 > it1) == (it1 < it1) );
+                    CHECK( (it1 > it2) == (it2 < it1) );
+                    CHECK( (it1 > it3) == (it3 < it1) );
+                    CHECK( (it2 > it3) == (it3 < it2) );
+                    CHECK( (it1_c > it1_c) == (it1_c < it1_c) );
+                    CHECK( (it1_c > it2_c) == (it2_c < it1_c) );
+                    CHECK( (it1_c > it3_c) == (it3_c < it1_c) );
+                    CHECK( (it2_c > it3_c) == (it3_c < it2_c) );
+                }
+            }
+
+            // comparison: greater than or equal
+            {
+                if (j.type() == json::value_t::object)
+                {
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_AS(it1 >= it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 >= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c >= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+#else
+                    CHECK_THROWS_WITH_AS(it1 >= it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 >= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c >= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+#endif
+                }
+                else
+                {
+                    // check definition
+                    CHECK( (it1 >= it1) == !(it1 < it1) );
+                    CHECK( (it1 >= it2) == !(it1 < it2) );
+                    CHECK( (it1 >= it3) == !(it1 < it3) );
+                    CHECK( (it2 >= it3) == !(it2 < it3) );
+                    CHECK( (it1_c >= it1_c) == !(it1_c < it1_c) );
+                    CHECK( (it1_c >= it2_c) == !(it1_c < it2_c) );
+                    CHECK( (it1_c >= it3_c) == !(it1_c < it3_c) );
+                    CHECK( (it2_c >= it3_c) == !(it2_c < it3_c) );
+                }
+            }
+        }
+
+        // check exceptions if different objects are compared
+        for (auto j : j_values)
+        {
+            for (auto k : j_values)
+            {
+                if (j != k)
+                {
+#if JSON_DIAGNOSTICS
+                    // the output differs in each loop, so we cannot fix a string for the expected exception
+#else
+                    CHECK_THROWS_WITH_AS(j.begin() == k.begin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.cbegin() == k.cbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.begin() < k.begin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.cbegin() < k.cbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+#endif
+                }
+            }
+        }
+    }
+
+    SECTION("iterator arithmetic")
+    {
+        json j_object = {{"one", 1}, {"two", 2}, {"three", 3}};
+        json j_array = {1, 2, 3, 4, 5, 6};
+        json j_null = nullptr;
+        json j_value = 42;
+
+        SECTION("addition and subtraction")
+        {
+            SECTION("object")
+            {
+                {
+                    auto it = j_object.begin();
+                    CHECK_THROWS_WITH_AS(it += 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.cbegin();
+                    CHECK_THROWS_WITH_AS(it += 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.begin();
+                    CHECK_THROWS_WITH_AS(it + 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.cbegin();
+                    CHECK_THROWS_WITH_AS(it + 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.begin();
+                    CHECK_THROWS_WITH_AS(1 + it, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.cbegin();
+                    CHECK_THROWS_WITH_AS(1 + it, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.begin();
+                    CHECK_THROWS_WITH_AS(it -= 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.cbegin();
+                    CHECK_THROWS_WITH_AS(it -= 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.begin();
+                    CHECK_THROWS_WITH_AS(it - 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.cbegin();
+                    CHECK_THROWS_WITH_AS(it - 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.begin();
+                    CHECK_THROWS_WITH_AS(it - it, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.cbegin();
+                    CHECK_THROWS_WITH_AS(it - it, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("array")
+            {
+                {
+                    auto it = j_array.begin();
+                    it += 3;
+                    CHECK((j_array.begin() + 3) == it);
+                    CHECK((3 + j_array.begin()) == it);
+                    CHECK((it - 3) == j_array.begin());
+                    CHECK((it - j_array.begin()) == 3);
+                    CHECK(*it == json(4));
+                    it -= 2;
+                    CHECK(*it == json(2));
+                }
+                {
+                    auto it = j_array.cbegin();
+                    it += 3;
+                    CHECK((j_array.cbegin() + 3) == it);
+                    CHECK((3 + j_array.cbegin()) == it);
+                    CHECK((it - 3) == j_array.cbegin());
+                    CHECK((it - j_array.cbegin()) == 3);
+                    CHECK(*it == json(4));
+                    it -= 2;
+                    CHECK(*it == json(2));
+                }
+            }
+
+            SECTION("null")
+            {
+                {
+                    auto it = j_null.begin();
+                    it += 3;
+                    CHECK((j_null.begin() + 3) == it);
+                    CHECK((3 + j_null.begin()) == it);
+                    CHECK((it - 3) == j_null.begin());
+                    CHECK((it - j_null.begin()) == 3);
+                    CHECK(it != j_null.end());
+                    it -= 3;
+                    CHECK(it == j_null.end());
+                }
+                {
+                    auto it = j_null.cbegin();
+                    it += 3;
+                    CHECK((j_null.cbegin() + 3) == it);
+                    CHECK((3 + j_null.cbegin()) == it);
+                    CHECK((it - 3) == j_null.cbegin());
+                    CHECK((it - j_null.cbegin()) == 3);
+                    CHECK(it != j_null.cend());
+                    it -= 3;
+                    CHECK(it == j_null.cend());
+                }
+            }
+
+            SECTION("value")
+            {
+                {
+                    auto it = j_value.begin();
+                    it += 3;
+                    CHECK((j_value.begin() + 3) == it);
+                    CHECK((3 + j_value.begin()) == it);
+                    CHECK((it - 3) == j_value.begin());
+                    CHECK((it - j_value.begin()) == 3);
+                    CHECK(it != j_value.end());
+                    it -= 3;
+                    CHECK(*it == json(42));
+                }
+                {
+                    auto it = j_value.cbegin();
+                    it += 3;
+                    CHECK((j_value.cbegin() + 3) == it);
+                    CHECK((3 + j_value.cbegin()) == it);
+                    CHECK((it - 3) == j_value.cbegin());
+                    CHECK((it - j_value.cbegin()) == 3);
+                    CHECK(it != j_value.cend());
+                    it -= 3;
+                    CHECK(*it == json(42));
+                }
+            }
+        }
+
+        SECTION("subscript operator")
+        {
+            SECTION("object")
+            {
+                {
+                    auto it = j_object.begin();
+                    CHECK_THROWS_WITH_AS(it[0], "[json.exception.invalid_iterator.208] cannot use operator[] for object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.208] cannot use operator[] for object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.cbegin();
+                    CHECK_THROWS_WITH_AS(it[0], "[json.exception.invalid_iterator.208] cannot use operator[] for object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.208] cannot use operator[] for object iterators", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("array")
+            {
+                {
+                    auto it = j_array.begin();
+                    CHECK(it[0] == json(1));
+                    CHECK(it[1] == json(2));
+                    CHECK(it[2] == json(3));
+                    CHECK(it[3] == json(4));
+                    CHECK(it[4] == json(5));
+                    CHECK(it[5] == json(6));
+                }
+                {
+                    auto it = j_array.cbegin();
+                    CHECK(it[0] == json(1));
+                    CHECK(it[1] == json(2));
+                    CHECK(it[2] == json(3));
+                    CHECK(it[3] == json(4));
+                    CHECK(it[4] == json(5));
+                    CHECK(it[5] == json(6));
+                }
+            }
+
+            SECTION("null")
+            {
+                {
+                    auto it = j_null.begin();
+                    CHECK_THROWS_WITH_AS(it[0], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_null.cbegin();
+                    CHECK_THROWS_WITH_AS(it[0], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("value")
+            {
+                {
+                    auto it = j_value.begin();
+                    CHECK(it[0] == json(42));
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_value.cbegin();
+                    CHECK(it[0] == json(42));
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+            }
+        }
+    }
+
+    SECTION("reverse iterator comparisons")
+    {
+        json j_values = {nullptr, true, 42, 42u, 23.23, {{"one", 1}, {"two", 2}}, {1, 2, 3, 4, 5}, "Hello, world"};
+
+        for (json& j : j_values)
+        {
+            auto it1 = j.rbegin();
+            auto it2 = j.rbegin();
+            auto it3 = j.rbegin();
+            ++it2;
+            ++it3;
+            ++it3;
+            auto it1_c = j.crbegin();
+            auto it2_c = j.crbegin();
+            auto it3_c = j.crbegin();
+            ++it2_c;
+            ++it3_c;
+            ++it3_c;
+
+            // comparison: equal
+            {
+                CHECK(it1 == it1);
+                CHECK(!(it1 == it2));
+                CHECK(!(it1 == it3));
+                CHECK(!(it2 == it3));
+                CHECK(it1_c == it1_c);
+                CHECK(!(it1_c == it2_c));
+                CHECK(!(it1_c == it3_c));
+                CHECK(!(it2_c == it3_c));
+            }
+
+            // comparison: not equal
+            {
+                // check definition
+                CHECK( (it1 != it1) == !(it1 == it1) );
+                CHECK( (it1 != it2) == !(it1 == it2) );
+                CHECK( (it1 != it3) == !(it1 == it3) );
+                CHECK( (it2 != it3) == !(it2 == it3) );
+                CHECK( (it1_c != it1_c) == !(it1_c == it1_c) );
+                CHECK( (it1_c != it2_c) == !(it1_c == it2_c) );
+                CHECK( (it1_c != it3_c) == !(it1_c == it3_c) );
+                CHECK( (it2_c != it3_c) == !(it2_c == it3_c) );
+            }
+
+            // comparison: smaller
+            {
+                if (j.type() == json::value_t::object)
+                {
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_AS(it1 < it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 < it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c < it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+#else
+                    CHECK_THROWS_WITH_AS(it1 < it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 < it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 < it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c < it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c < it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+#endif
+                }
+                else
+                {
+                    CHECK(!(it1 < it1));
+                    CHECK(it1 < it2);
+                    CHECK(it1 < it3);
+                    CHECK(it2 < it3);
+                    CHECK(!(it1_c < it1_c));
+                    CHECK(it1_c < it2_c);
+                    CHECK(it1_c < it3_c);
+                    CHECK(it2_c < it3_c);
+                }
+            }
+
+            // comparison: less than or equal
+            {
+                if (j.type() == json::value_t::object)
+                {
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_AS(it1 <= it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 <= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c <= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+#else
+                    CHECK_THROWS_WITH_AS(it1 <= it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 <= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 <= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c <= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c <= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+#endif
+                }
+                else
+                {
+                    // check definition
+                    CHECK( (it1 <= it1) == !(it1 < it1) );
+                    CHECK( (it1 <= it2) == !(it2 < it1) );
+                    CHECK( (it1 <= it3) == !(it3 < it1) );
+                    CHECK( (it2 <= it3) == !(it3 < it2) );
+                    CHECK( (it1_c <= it1_c) == !(it1_c < it1_c) );
+                    CHECK( (it1_c <= it2_c) == !(it2_c < it1_c) );
+                    CHECK( (it1_c <= it3_c) == !(it3_c < it1_c) );
+                    CHECK( (it2_c <= it3_c) == !(it3_c < it2_c) );
+                }
+            }
+
+            // comparison: greater than
+            {
+                if (j.type() == json::value_t::object)
+                {
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_AS(it1 > it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 > it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c > it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+#else
+                    CHECK_THROWS_WITH_AS(it1 > it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 > it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 > it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c > it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c > it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+#endif
+                }
+                else
+                {
+                    // check definition
+                    CHECK( (it1 > it1) == (it1 < it1) );
+                    CHECK( (it1 > it2) == (it2 < it1) );
+                    CHECK( (it1 > it3) == (it3 < it1) );
+                    CHECK( (it2 > it3) == (it3 < it2) );
+                    CHECK( (it1_c > it1_c) == (it1_c < it1_c) );
+                    CHECK( (it1_c > it2_c) == (it2_c < it1_c) );
+                    CHECK( (it1_c > it3_c) == (it3_c < it1_c) );
+                    CHECK( (it2_c > it3_c) == (it3_c < it2_c) );
+                }
+            }
+
+            // comparison: greater than or equal
+            {
+                if (j.type() == json::value_t::object)
+                {
+#if JSON_DIAGNOSTICS
+                    CHECK_THROWS_WITH_AS(it1 >= it1, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it2, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 >= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it3, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it1_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it2_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c >= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it3_c, "[json.exception.invalid_iterator.213] (/5) cannot compare order of object iterators", json::invalid_iterator&);
+#else
+                    CHECK_THROWS_WITH_AS(it1 >= it1, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it2, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2 >= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1 >= it3, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it1_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it2_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it2_c >= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it1_c >= it3_c, "[json.exception.invalid_iterator.213] cannot compare order of object iterators", json::invalid_iterator&);
+#endif
+                }
+                else
+                {
+                    // check definition
+                    CHECK( (it1 >= it1) == !(it1 < it1) );
+                    CHECK( (it1 >= it2) == !(it1 < it2) );
+                    CHECK( (it1 >= it3) == !(it1 < it3) );
+                    CHECK( (it2 >= it3) == !(it2 < it3) );
+                    CHECK( (it1_c >= it1_c) == !(it1_c < it1_c) );
+                    CHECK( (it1_c >= it2_c) == !(it1_c < it2_c) );
+                    CHECK( (it1_c >= it3_c) == !(it1_c < it3_c) );
+                    CHECK( (it2_c >= it3_c) == !(it2_c < it3_c) );
+                }
+            }
+        }
+
+        // check exceptions if different objects are compared
+        for (auto j : j_values)
+        {
+            for (auto k : j_values)
+            {
+                if (j != k)
+                {
+#if JSON_DIAGNOSTICS
+                    // the output differs in each loop, so we cannot fix a string for the expected exception
+#else
+                    CHECK_THROWS_WITH_AS(j.rbegin() == k.rbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.crbegin() == k.crbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.rbegin() < k.rbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j.crbegin() < k.crbegin(), "[json.exception.invalid_iterator.212] cannot compare iterators of different containers", json::invalid_iterator&);
+#endif
+                }
+            }
+        }
+    }
+
+    SECTION("reverse iterator arithmetic")
+    {
+        json j_object = {{"one", 1}, {"two", 2}, {"three", 3}};
+        json j_array = {1, 2, 3, 4, 5, 6};
+        json j_null = nullptr;
+        json j_value = 42;
+
+        SECTION("addition and subtraction")
+        {
+            SECTION("object")
+            {
+                {
+                    auto it = j_object.rbegin();
+                    CHECK_THROWS_WITH_AS(it += 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.crbegin();
+                    CHECK_THROWS_WITH_AS(it += 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.rbegin();
+                    CHECK_THROWS_WITH_AS(it + 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.crbegin();
+                    CHECK_THROWS_WITH_AS(it + 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.rbegin();
+                    CHECK_THROWS_WITH_AS(1 + it, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.crbegin();
+                    CHECK_THROWS_WITH_AS(1 + it, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.rbegin();
+                    CHECK_THROWS_WITH_AS(it -= 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.crbegin();
+                    CHECK_THROWS_WITH_AS(it -= 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.rbegin();
+                    CHECK_THROWS_WITH_AS(it - 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.crbegin();
+                    CHECK_THROWS_WITH_AS(it - 1, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.rbegin();
+                    CHECK_THROWS_WITH_AS(it - it, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.crbegin();
+                    CHECK_THROWS_WITH_AS(it - it, "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("array")
+            {
+                {
+                    auto it = j_array.rbegin();
+                    it += 3;
+                    CHECK((j_array.rbegin() + 3) == it);
+                    CHECK(json::reverse_iterator(3 + j_array.rbegin()) == it);
+                    CHECK((it - 3) == j_array.rbegin());
+                    CHECK((it - j_array.rbegin()) == 3);
+                    CHECK(*it == json(3));
+                    it -= 2;
+                    CHECK(*it == json(5));
+                }
+                {
+                    auto it = j_array.crbegin();
+                    it += 3;
+                    CHECK((j_array.crbegin() + 3) == it);
+                    CHECK(json::const_reverse_iterator(3 + j_array.crbegin()) == it);
+                    CHECK((it - 3) == j_array.crbegin());
+                    CHECK((it - j_array.crbegin()) == 3);
+                    CHECK(*it == json(3));
+                    it -= 2;
+                    CHECK(*it == json(5));
+                }
+            }
+
+            SECTION("null")
+            {
+                {
+                    auto it = j_null.rbegin();
+                    it += 3;
+                    CHECK((j_null.rbegin() + 3) == it);
+                    CHECK(json::reverse_iterator(3 + j_null.rbegin()) == it);
+                    CHECK((it - 3) == j_null.rbegin());
+                    CHECK((it - j_null.rbegin()) == 3);
+                    CHECK(it != j_null.rend());
+                    it -= 3;
+                    CHECK(it == j_null.rend());
+                }
+                {
+                    auto it = j_null.crbegin();
+                    it += 3;
+                    CHECK((j_null.crbegin() + 3) == it);
+                    CHECK(json::const_reverse_iterator(3 + j_null.crbegin()) == it);
+                    CHECK((it - 3) == j_null.crbegin());
+                    CHECK((it - j_null.crbegin()) == 3);
+                    CHECK(it != j_null.crend());
+                    it -= 3;
+                    CHECK(it == j_null.crend());
+                }
+            }
+
+            SECTION("value")
+            {
+                {
+                    auto it = j_value.rbegin();
+                    it += 3;
+                    CHECK((j_value.rbegin() + 3) == it);
+                    CHECK(json::reverse_iterator(3 + j_value.rbegin()) == it);
+                    CHECK((it - 3) == j_value.rbegin());
+                    CHECK((it - j_value.rbegin()) == 3);
+                    CHECK(it != j_value.rend());
+                    it -= 3;
+                    CHECK(*it == json(42));
+                }
+                {
+                    auto it = j_value.crbegin();
+                    it += 3;
+                    CHECK((j_value.crbegin() + 3) == it);
+                    CHECK(json::const_reverse_iterator(3 + j_value.crbegin()) == it);
+                    CHECK((it - 3) == j_value.crbegin());
+                    CHECK((it - j_value.crbegin()) == 3);
+                    CHECK(it != j_value.crend());
+                    it -= 3;
+                    CHECK(*it == json(42));
+                }
+            }
+        }
+
+        SECTION("subscript operator")
+        {
+            SECTION("object")
+            {
+                {
+                    auto it = j_object.rbegin();
+                    CHECK_THROWS_WITH_AS(it[0], "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_object.crbegin();
+                    CHECK_THROWS_WITH_AS(it[0], "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.209] cannot use offsets with object iterators", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("array")
+            {
+                {
+                    auto it = j_array.rbegin();
+                    CHECK(it[0] == json(6));
+                    CHECK(it[1] == json(5));
+                    CHECK(it[2] == json(4));
+                    CHECK(it[3] == json(3));
+                    CHECK(it[4] == json(2));
+                    CHECK(it[5] == json(1));
+                }
+                {
+                    auto it = j_array.crbegin();
+                    CHECK(it[0] == json(6));
+                    CHECK(it[1] == json(5));
+                    CHECK(it[2] == json(4));
+                    CHECK(it[3] == json(3));
+                    CHECK(it[4] == json(2));
+                    CHECK(it[5] == json(1));
+                }
+            }
+
+            SECTION("null")
+            {
+                {
+                    auto it = j_null.rbegin();
+                    CHECK_THROWS_WITH_AS(it[0], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_null.crbegin();
+                    CHECK_THROWS_WITH_AS(it[0], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+            }
+
+            SECTION("value")
+            {
+                {
+                    auto it = j_value.rbegin();
+                    CHECK(it[0] == json(42));
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+                {
+                    auto it = j_value.crbegin();
+                    CHECK(it[0] == json(42));
+                    CHECK_THROWS_WITH_AS(it[1], "[json.exception.invalid_iterator.214] cannot get value", json::invalid_iterator&);
+                }
+            }
+        }
+    }
+
+#if JSON_HAS_RANGES
+    // JSON_HAS_CPP_20 (do not remove; see note at top of file)
+    SECTION("ranges")
+    {
+        SECTION("concepts")
+        {
+            using nlohmann::detail::iteration_proxy_value;
+            CHECK(std::bidirectional_iterator<json::iterator>);
+            CHECK(std::input_iterator<iteration_proxy_value<json::iterator>>);
+
+            CHECK(std::is_same<json::iterator, std::ranges::iterator_t<json>>::value);
+            CHECK(std::ranges::bidirectional_range<json>);
+
+            using nlohmann::detail::iteration_proxy;
+            using items_type = decltype(std::declval<json&>().items());
+            CHECK(std::is_same<items_type, iteration_proxy<json::iterator>>::value);
+            CHECK(std::is_same<iteration_proxy_value<json::iterator>, std::ranges::iterator_t<items_type>>::value);
+            CHECK(std::ranges::input_range<items_type>);
+        }
+
+        // libstdc++ algorithms don't work with Clang 15 (04/2022)
+#if !DOCTEST_CLANG || (DOCTEST_CLANG && defined(__GLIBCXX__))
+        SECTION("algorithms")
+        {
+            SECTION("copy")
+            {
+                json j{"foo", "bar"};
+                auto j_copied = json::array();
+
+                std::ranges::copy(j, std::back_inserter(j_copied));
+
+                CHECK(j == j_copied);
+            }
+
+            SECTION("find_if")
+            {
+                json j{1, 3, 2, 4};
+                auto j_even = json::array();
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+                auto it = std::ranges::find_if(j, [](int v) noexcept
+                {
+                    return (v % 2) == 0;
+                });
+#else
+                auto it = std::ranges::find_if(j, [](const json & j) noexcept
+                {
+                    int v;
+                    j.get_to(v);
+                    return (v % 2) == 0;
+                });
+#endif
+
+                CHECK(*it == 2);
+            }
+        }
+#endif
+
+        // libstdc++ views don't work with Clang 15 (04/2022)
+        // libc++ hides limited ranges implementation behind guard macro
+#if !(DOCTEST_CLANG && (defined(__GLIBCXX__) || defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)))
+        SECTION("views")
+        {
+            SECTION("reverse")
+            {
+                json j{1, 2, 3, 4, 5};
+                json j_expected{5, 4, 3, 2, 1};
+
+                auto reversed = j | std::views::reverse;
+                CHECK(std::ranges::equal(reversed, j_expected));
+            }
+
+            SECTION("transform")
+            {
+                json j
+                {
+                    { "a_key", "a_value"},
+                    { "b_key", "b_value"},
+                    { "c_key", "c_value"},
+                };
+                json j_expected{"a_key", "b_key", "c_key"};
+
+                auto transformed = j.items() | std::views::transform([](const auto & item)
+                {
+                    return item.key();
+                });
+                auto j_transformed = json::array();
+                std::ranges::copy(transformed, std::back_inserter(j_transformed));
+
+                CHECK(j_transformed == j_expected);
+            }
+        }
+#endif
+    }
+#endif
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators3.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators3.cpp
new file mode 100644
index 00000000..49d3ed6e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-iterators3.cpp
@@ -0,0 +1,35 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#if (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
+    #define JSON_HAS_CPP_14
+#endif
+
+#ifdef JSON_HAS_CPP_14
+TEST_CASE_TEMPLATE("checking forward-iterators", T, // NOLINT(readability-math-missing-parentheses)
+                   std::vector<int>, std::string, nlohmann::json)
+{
+    auto it1 = typename T::iterator{};
+    auto it2 = typename T::iterator{};
+    CHECK(it1 == it2);
+    CHECK(it1 <= it2);
+    CHECK(it1 >= it2);
+    CHECK_FALSE(it1 != it2);
+    CHECK_FALSE(it1 < it2);
+    CHECK_FALSE(it1 > it2);
+}
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-json_patch.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-json_patch.cpp
new file mode 100644
index 00000000..da0cf731
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-json_patch.cpp
@@ -0,0 +1,1321 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <fstream>
+#include "make_test_data_available.hpp"
+
+TEST_CASE("JSON patch")
+{
+    SECTION("examples from RFC 6902")
+    {
+        SECTION("4. Operations")
+        {
+            // the ordering of members in JSON objects is not significant:
+            json op1 = R"({ "op": "add", "path": "/a/b/c", "value": "foo" })"_json;
+            json op2 = R"({ "path": "/a/b/c", "op": "add", "value": "foo" })"_json;
+            json op3 = R"({ "value": "foo", "path": "/a/b/c", "op": "add" })"_json;
+
+            // check if the operation objects are equivalent
+            CHECK(op1 == op2);
+            CHECK(op1 == op3);
+        }
+
+        SECTION("4.1 add")
+        {
+            json const patch1 = R"([{ "op": "add", "path": "/a/b", "value": [ "foo", "bar" ] }])"_json;
+
+            // However, the object itself or an array containing it does need
+            // to exist, and it remains an error for that not to be the case.
+            // For example, an "add" with a target location of "/a/b" starting
+            // with this document
+            json const doc1 = R"({ "a": { "foo": 1 } })"_json;
+
+            // is not an error, because "a" exists, and "b" will be added to
+            // its value.
+            CHECK_NOTHROW(doc1.patch(patch1));
+            auto doc1_ans = R"(
+                {
+                    "a": {
+                        "foo": 1,
+                        "b": [ "foo", "bar" ]
+                    }
+                }
+            )"_json;
+            CHECK(doc1.patch(patch1) == doc1_ans);
+
+            // It is an error in this document:
+            json const doc2 = R"({ "q": { "bar": 2 } })"_json;
+
+            // because "a" does not exist.
+            CHECK_THROWS_WITH_AS(doc2.patch(patch1), "[json.exception.out_of_range.403] key 'a' not found", json::out_of_range&);
+
+            json const doc3 = R"({ "a": {} })"_json;
+            json const patch2 = R"([{ "op": "add", "path": "/a/b/c", "value": 1 }])"_json;
+
+            // should cause an error because "b" does not exist in doc3
+#if JSON_DIAGNOSTICS
+            CHECK_THROWS_WITH_AS(doc3.patch(patch2), "[json.exception.out_of_range.403] (/a) key 'b' not found", json::out_of_range&);
+#else
+            CHECK_THROWS_WITH_AS(doc3.patch(patch2), "[json.exception.out_of_range.403] key 'b' not found", json::out_of_range&);
+#endif
+        }
+
+        SECTION("4.2 remove")
+        {
+            // If removing an element from an array, any elements above the
+            // specified index are shifted one position to the left.
+            json const doc = {1, 2, 3, 4};
+            json const patch = {{{"op", "remove"}, {"path", "/1"}}};
+            CHECK(doc.patch(patch) == json({1, 3, 4}));
+        }
+
+        SECTION("A.1. Adding an Object Member")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "foo": "bar"}
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "add", "path": "/baz", "value": "qux" }
+                    ]
+                )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                    {
+                        "baz": "qux",
+                        "foo": "bar"
+                    }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.2. Adding an Array Element")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "foo": [ "bar", "baz" ] }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "add", "path": "/foo/1", "value": "qux" }
+                    ]
+                )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                    { "foo": [ "bar", "qux", "baz" ] }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.3. Removing an Object Member")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    {
+                        "baz": "qux",
+                        "foo": "bar"
+                    }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "remove", "path": "/baz" }
+                    ]
+                )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                    { "foo": "bar" }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.4. Removing an Array Element")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "foo": [ "bar", "qux", "baz" ] }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "remove", "path": "/foo/1" }
+                    ]
+                )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                    { "foo": [ "bar", "baz" ] }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.5. Replacing a Value")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    {
+                        "baz": "qux",
+                        "foo": "bar"
+                    }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "replace", "path": "/baz", "value": "boo" }
+                    ]
+                )"_json;
+
+            json expected = R"(
+                    {
+                        "baz": "boo",
+                        "foo": "bar"
+                    }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.6. Moving a Value")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    {
+                        "foo": {
+                           "bar": "baz",
+                            "waldo": "fred"
+                        },
+                        "qux": {
+                            "corge": "grault"
+                        }
+                    }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "move", "from": "/foo/waldo", "path": "/qux/thud" }
+                    ]
+                )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                    {
+                        "foo": {
+                           "bar": "baz"
+                        },
+                        "qux": {
+                            "corge": "grault",
+                            "thud": "fred"
+                        }
+                    }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.7. Moving a Value")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "foo": [ "all", "grass", "cows", "eat" ] }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "move", "from": "/foo/1", "path": "/foo/3" }
+                    ]
+                )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                    { "foo": [ "all", "cows", "eat", "grass" ] }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.8. Testing a Value: Success")
+        {
+            // An example target JSON document:
+            json doc = R"(
+                    {
+                         "baz": "qux",
+                         "foo": [ "a", 2, "c" ]
+                    }
+                )"_json;
+
+            // A JSON Patch document that will result in successful evaluation:
+            json const patch = R"(
+                    [
+                        { "op": "test", "path": "/baz", "value": "qux" },
+                        { "op": "test", "path": "/foo/1", "value": 2 }
+                    ]
+                )"_json;
+
+            // check if evaluation does not throw
+            CHECK_NOTHROW(doc.patch(patch));
+            // check if patched document is unchanged
+            CHECK(doc.patch(patch) == doc);
+        }
+
+        SECTION("A.9. Testing a Value: Error")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "baz": "qux" }
+                )"_json;
+
+            // A JSON Patch document that will result in an error condition:
+            json patch = R"(
+                    [
+                        { "op": "test", "path": "/baz", "value": "bar" }
+                    ]
+                )"_json;
+
+            // check that evaluation throws
+            CHECK_THROWS_AS(doc.patch(patch), json::other_error&);
+#if JSON_DIAGNOSTICS
+            CHECK_THROWS_WITH_STD_STR(doc.patch(patch), "[json.exception.other_error.501] (/0) unsuccessful: " + patch[0].dump());
+#else
+            CHECK_THROWS_WITH_STD_STR(doc.patch(patch), "[json.exception.other_error.501] unsuccessful: " + patch[0].dump());
+#endif
+        }
+
+        SECTION("A.10. Adding a Nested Member Object")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "foo": "bar" }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "add", "path": "/child", "value": { "grandchild": { } } }
+                    ]
+                )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                {
+                    "foo": "bar",
+                    "child": {
+                        "grandchild": {
+                        }
+                    }
+                }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.11. Ignoring Unrecognized Elements")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "foo": "bar" }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "add", "path": "/baz", "value": "qux", "xyz": 123 }
+                    ]
+                )"_json;
+
+            json expected = R"(
+                    {
+                        "foo": "bar",
+                        "baz": "qux"
+                    } 
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.12. Adding to a Nonexistent Target")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "foo": "bar" }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "add", "path": "/baz/bat", "value": "qux" }
+                    ]
+                )"_json;
+
+            // This JSON Patch document, applied to the target JSON document
+            // above, would result in an error (therefore, it would not be
+            // applied), because the "add" operation's target location that
+            // references neither the root of the document, nor a member of
+            // an existing object, nor a member of an existing array.
+
+            CHECK_THROWS_WITH_AS(doc.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
+        }
+
+        // A.13. Invalid JSON Patch Document
+        // not applicable
+
+        SECTION("A.14. Escape Ordering")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    {
+                        "/": 9,
+                        "~1": 10
+                    }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        {"op": "test", "path": "/~01", "value": 10}
+                    ]
+                )"_json;
+
+            json expected = R"(
+                    {
+                        "/": 9,
+                        "~1": 10
+                    } 
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("A.15. Comparing Strings and Numbers")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    {
+                        "/": 9,
+                        "~1": 10
+                    } 
+                )"_json;
+
+            // A JSON Patch document that will result in an error condition:
+            json patch = R"(
+                    [
+                        {"op": "test", "path": "/~01", "value": "10"}
+                    ]
+                )"_json;
+
+            // check that evaluation throws
+            CHECK_THROWS_AS(doc.patch(patch), json::other_error&);
+#if JSON_DIAGNOSTICS
+            CHECK_THROWS_WITH_STD_STR(doc.patch(patch), "[json.exception.other_error.501] (/0) unsuccessful: " + patch[0].dump());
+#else
+            CHECK_THROWS_WITH_STD_STR(doc.patch(patch), "[json.exception.other_error.501] unsuccessful: " + patch[0].dump());
+#endif
+        }
+
+        SECTION("A.16. Adding an Array Value")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                    { "foo": ["bar"] }
+                )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                    [
+                        { "op": "add", "path": "/foo/-", "value": ["abc", "def"] }
+                    ]
+                )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                    { "foo": ["bar", ["abc", "def"]] }
+                )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+    }
+
+    SECTION("own examples")
+    {
+        SECTION("add")
+        {
+            SECTION("add to the root element")
+            {
+                // If the path is the root of the target document - the
+                // specified value becomes the entire content of the target
+                // document.
+
+                // An example target JSON document:
+                json const doc = 17;
+
+                // A JSON Patch document:
+                json const patch = R"(
+                        [
+                            { "op": "add", "path": "", "value": [1,2,3] }
+                        ]
+                    )"_json;
+
+                // The resulting JSON document:
+                json expected = {1, 2, 3};
+
+                // check if patched value is as expected
+                CHECK(doc.patch(patch) == expected);
+
+                // check roundtrip
+                CHECK(doc.patch(json::diff(doc, expected)) == expected);
+            }
+
+            SECTION("add to end of the array")
+            {
+                // The specified index MUST NOT be greater than the number of
+                // elements in the array. The example below uses and index of
+                // exactly the number of elements in the array which is legal.
+
+                // An example target JSON document:
+                json const doc = {0, 1, 2};
+
+                // A JSON Patch document:
+                json const patch = R"(
+                    [
+                        { "op": "add", "path": "/3", "value": 3 }
+                    ]
+                )"_json;
+
+                // The resulting JSON document:
+                json expected = {0, 1, 2, 3};
+
+                // check if patched value is as expected
+                CHECK(doc.patch(patch) == expected);
+
+                // check roundtrip
+                CHECK(doc.patch(json::diff(doc, expected)) == expected);
+            }
+        }
+
+        SECTION("copy")
+        {
+            // An example target JSON document:
+            json const doc = R"(
+                {
+                    "foo": {
+                        "bar": "baz",
+                        "waldo": "fred"
+                    },
+                    "qux": {
+                       "corge": "grault"
+                    }
+                }
+            )"_json;
+
+            // A JSON Patch document:
+            json const patch = R"(
+                [
+                    { "op": "copy", "from": "/foo/waldo", "path": "/qux/thud" }
+                ]
+            )"_json;
+
+            // The resulting JSON document:
+            json expected = R"(
+                {
+                    "foo": {
+                        "bar": "baz",
+                        "waldo": "fred"
+                    },
+                    "qux": {
+                       "corge": "grault",
+                       "thud": "fred"
+                    }
+                }
+            )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == expected);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, expected)) == expected);
+        }
+
+        SECTION("replace")
+        {
+            json const j = "string";
+            json const patch = {{{"op", "replace"}, {"path", ""}, {"value", 1}}};
+            CHECK(j.patch(patch) == json(1));
+        }
+
+        SECTION("documentation GIF")
+        {
+            {
+                // a JSON patch
+                json const p1 = R"(
+                     [{"op": "add", "path": "/GB", "value": "London"}]
+                    )"_json;
+
+                // a JSON value
+                json const source = R"(
+                      {"D": "Berlin", "F": "Paris"}
+                    )"_json;
+
+                // apply the patch
+                json target = source.patch(p1);
+                // target = { "D": "Berlin", "F": "Paris", "GB": "London" }
+                CHECK(target == R"({ "D": "Berlin", "F": "Paris", "GB": "London" })"_json);
+
+                // create a diff from two JSONs
+                json p2 = json::diff(target, source); // NOLINT(readability-suspicious-call-argument)
+                // p2 = [{"op": "delete", "path": "/GB"}]
+                CHECK(p2 == R"([{"op":"remove","path":"/GB"}])"_json);
+            }
+            {
+                // a JSON value
+                json j = {"good", "bad", "ugly"};
+
+                // a JSON pointer
+                auto ptr = json::json_pointer("/2");
+
+                // use to access elements
+                j[ptr] = {{"it", "cattivo"}};
+                CHECK(j == R"(["good","bad",{"it":"cattivo"}])"_json);
+
+                // use user-defined string literal
+                j["/2/en"_json_pointer] = "ugly";
+                CHECK(j == R"(["good","bad",{"en":"ugly","it":"cattivo"}])"_json);
+
+                json flat = j.flatten();
+                CHECK(flat == R"({"/0":"good","/1":"bad","/2/en":"ugly","/2/it":"cattivo"})"_json);
+            }
+        }
+    }
+
+    SECTION("errors")
+    {
+        SECTION("unknown operation")
+        {
+            SECTION("not an array")
+            {
+                json const j;
+                json const patch = {{"op", "add"}, {"path", ""}, {"value", 1}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.104] parse error: JSON patch must be an array of objects", json::parse_error&);
+            }
+
+            SECTION("not an array of objects")
+            {
+                json const j;
+                json const patch = {"op", "add", "path", "", "value", 1};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.104] parse error: (/0) JSON patch must be an array of objects", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.104] parse error: JSON patch must be an array of objects", json::parse_error&);
+#endif
+            }
+
+            SECTION("missing 'op'")
+            {
+                json const j;
+                json const patch = {{{"foo", "bar"}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation must have member 'op'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation must have member 'op'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'op'")
+            {
+                json const j;
+                json const patch = {{{"op", 1}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation must have string member 'op'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation must have string member 'op'", json::parse_error&);
+#endif
+            }
+
+            SECTION("invalid operation")
+            {
+                json const j;
+                json const patch = {{{"op", "foo"}, {"path", ""}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation value 'foo' is invalid", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation value 'foo' is invalid", json::parse_error&);
+#endif
+            }
+        }
+
+        SECTION("add")
+        {
+            SECTION("missing 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "add"}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'add' must have member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "add"}, {"path", 1}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have string member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'add' must have string member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("missing 'value'")
+            {
+                json const j;
+                json const patch = {{{"op", "add"}, {"path", ""}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'add' must have member 'value'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'add' must have member 'value'", json::parse_error&);
+#endif
+            }
+
+            SECTION("invalid array index")
+            {
+                json const j = {1, 2};
+                json const patch = {{{"op", "add"}, {"path", "/4"}, {"value", 4}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 4 is out of range", json::out_of_range&);
+            }
+        }
+
+        SECTION("remove")
+        {
+            SECTION("missing 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "remove"}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'remove' must have member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'remove' must have member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "remove"}, {"path", 1}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'remove' must have string member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'remove' must have string member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("nonexisting target location (array)")
+            {
+                json const j = {1, 2, 3};
+                json const patch = {{{"op", "remove"}, {"path", "/17"}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 17 is out of range", json::out_of_range&);
+            }
+
+            SECTION("nonexisting target location (object)")
+            {
+                json const j = {{"foo", 1}, {"bar", 2}};
+                json const patch = {{{"op", "remove"}, {"path", "/baz"}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
+            }
+
+            SECTION("root element as target location")
+            {
+                json const j = "string";
+                json const patch = {{{"op", "remove"}, {"path", ""}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&);
+            }
+        }
+
+        SECTION("replace")
+        {
+            SECTION("missing 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "replace"}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'replace' must have member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "replace"}, {"path", 1}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have string member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'replace' must have string member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("missing 'value'")
+            {
+                json const j;
+                json const patch = {{{"op", "replace"}, {"path", ""}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'replace' must have member 'value'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'replace' must have member 'value'", json::parse_error&);
+#endif
+            }
+
+            SECTION("nonexisting target location (array)")
+            {
+                json const j = {1, 2, 3};
+                json const patch = {{{"op", "replace"}, {"path", "/17"}, {"value", 19}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 17 is out of range", json::out_of_range&);
+            }
+
+            SECTION("nonexisting target location (object)")
+            {
+                json const j = {{"foo", 1}, {"bar", 2}};
+                json const patch = {{{"op", "replace"}, {"path", "/baz"}, {"value", 3}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
+            }
+        }
+
+        SECTION("move")
+        {
+            SECTION("missing 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "move"}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'move' must have member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "move"}, {"path", 1}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have string member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'move' must have string member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("missing 'from'")
+            {
+                json const j;
+                json const patch = {{{"op", "move"}, {"path", ""}}};
+                CHECK_THROWS_AS(j.patch(patch), json::parse_error&);
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have member 'from'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'move' must have member 'from'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'from'")
+            {
+                json const j;
+                json const patch = {{{"op", "move"}, {"path", ""}, {"from", 1}}};
+                CHECK_THROWS_AS(j.patch(patch), json::parse_error&);
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'move' must have string member 'from'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'move' must have string member 'from'", json::parse_error&);
+#endif
+            }
+
+            SECTION("nonexisting from location (array)")
+            {
+                json const j = {1, 2, 3};
+                json const patch = {{{"op", "move"}, {"path", "/0"}, {"from", "/5"}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 5 is out of range", json::out_of_range&);
+            }
+
+            SECTION("nonexisting from location (object)")
+            {
+                json const j = {{"foo", 1}, {"bar", 2}};
+                json const patch = {{{"op", "move"}, {"path", "/baz"}, {"from", "/baz"}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
+            }
+        }
+
+        SECTION("copy")
+        {
+            SECTION("missing 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "copy"}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'copy' must have member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "copy"}, {"path", 1}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have string member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'copy' must have string member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("missing 'from'")
+            {
+                json const j;
+                json const patch = {{{"op", "copy"}, {"path", ""}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have member 'from'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'copy' must have member 'from'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'from'")
+            {
+                json const j;
+                json const patch = {{{"op", "copy"}, {"path", ""}, {"from", 1}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'copy' must have string member 'from'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'copy' must have string member 'from'", json::parse_error&);
+#endif
+            }
+
+            SECTION("nonexisting from location (array)")
+            {
+                json const j = {1, 2, 3};
+                json const patch = {{{"op", "copy"}, {"path", "/0"}, {"from", "/5"}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.401] array index 5 is out of range", json::out_of_range&);
+            }
+
+            SECTION("nonexisting from location (object)")
+            {
+                json const j = {{"foo", 1}, {"bar", 2}};
+                json const patch = {{{"op", "copy"}, {"path", "/fob"}, {"from", "/baz"}}};
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.out_of_range.403] key 'baz' not found", json::out_of_range&);
+            }
+        }
+
+        SECTION("test")
+        {
+            SECTION("missing 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "test"}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'test' must have member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("non-string 'path'")
+            {
+                json const j;
+                json const patch = {{{"op", "test"}, {"path", 1}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have string member 'path'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'test' must have string member 'path'", json::parse_error&);
+#endif
+            }
+
+            SECTION("missing 'value'")
+            {
+                json const j;
+                json const patch = {{{"op", "test"}, {"path", ""}}};
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: (/0) operation 'test' must have member 'value'", json::parse_error&);
+#else
+                CHECK_THROWS_WITH_AS(j.patch(patch), "[json.exception.parse_error.105] parse error: operation 'test' must have member 'value'", json::parse_error&);
+#endif
+            }
+        }
+    }
+
+    SECTION("Examples from jsonpatch.com")
+    {
+        SECTION("Simple Example")
+        {
+            // The original document
+            json const doc = R"(
+                {
+                  "baz": "qux",
+                  "foo": "bar"
+                }
+            )"_json;
+
+            // The patch
+            json const patch = R"(
+                [
+                  { "op": "replace", "path": "/baz", "value": "boo" },
+                  { "op": "add", "path": "/hello", "value": ["world"] },
+                  { "op": "remove", "path": "/foo"}
+                ]
+            )"_json;
+
+            // The result
+            json result = R"(
+                {
+                   "baz": "boo",
+                   "hello": ["world"]
+                }
+            )"_json;
+
+            // check if patched value is as expected
+            CHECK(doc.patch(patch) == result);
+
+            // check roundtrip
+            CHECK(doc.patch(json::diff(doc, result)) == result);
+        }
+
+        SECTION("Operations")
+        {
+            // The original document
+            json const doc = R"(
+                {
+                  "biscuits": [
+                    {"name":"Digestive"},
+                    {"name": "Choco Liebniz"}
+                  ]
+                }
+            )"_json;
+
+            SECTION("add")
+            {
+                // The patch
+                json const patch = R"(
+                    [
+                        {"op": "add", "path": "/biscuits/1", "value": {"name": "Ginger Nut"}}
+                    ]
+                )"_json;
+
+                // The result
+                json result = R"(
+                    {
+                      "biscuits": [
+                        {"name": "Digestive"},
+                        {"name": "Ginger Nut"},
+                        {"name": "Choco Liebniz"}
+                      ]
+                    }
+                )"_json;
+
+                // check if patched value is as expected
+                CHECK(doc.patch(patch) == result);
+
+                // check roundtrip
+                CHECK(doc.patch(json::diff(doc, result)) == result);
+            }
+
+            SECTION("remove")
+            {
+                // The patch
+                json const patch = R"(
+                    [
+                        {"op": "remove", "path": "/biscuits"}
+                    ]
+                )"_json;
+
+                // The result
+                json result = R"(
+                    {}
+                )"_json;
+
+                // check if patched value is as expected
+                CHECK(doc.patch(patch) == result);
+
+                // check roundtrip
+                CHECK(doc.patch(json::diff(doc, result)) == result);
+            }
+
+            SECTION("replace")
+            {
+                // The patch
+                json const patch = R"(
+                    [
+                        {"op": "replace", "path": "/biscuits/0/name", "value": "Chocolate Digestive"}
+                    ]
+                )"_json;
+
+                // The result
+                json result = R"(
+                    {
+                      "biscuits": [
+                        {"name": "Chocolate Digestive"},
+                        {"name": "Choco Liebniz"}
+                      ]
+                    }
+                )"_json;
+
+                // check if patched value is as expected
+                CHECK(doc.patch(patch) == result);
+
+                // check roundtrip
+                CHECK(doc.patch(json::diff(doc, result)) == result);
+            }
+
+            SECTION("copy")
+            {
+                // The patch
+                json const patch = R"(
+                    [
+                        {"op": "copy", "from": "/biscuits/0", "path": "/best_biscuit"}
+                    ]
+                )"_json;
+
+                // The result
+                json result = R"(
+                    {
+                      "biscuits": [
+                        {"name": "Digestive"},
+                        {"name": "Choco Liebniz"}
+                      ],
+                      "best_biscuit": {
+                        "name": "Digestive"
+                      }
+                    }
+                )"_json;
+
+                // check if patched value is as expected
+                CHECK(doc.patch(patch) == result);
+
+                // check roundtrip
+                CHECK(doc.patch(json::diff(doc, result)) == result);
+            }
+
+            SECTION("move")
+            {
+                // The patch
+                json const patch = R"(
+                    [
+                        {"op": "move", "from": "/biscuits", "path": "/cookies"}
+                    ]
+                )"_json;
+
+                // The result
+                json result = R"(
+                    {
+                      "cookies": [
+                        {"name": "Digestive"},
+                        {"name": "Choco Liebniz"}
+                      ]
+                    }
+                )"_json;
+
+                // check if patched value is as expected
+                CHECK(doc.patch(patch) == result);
+
+                // check roundtrip
+                CHECK(doc.patch(json::diff(doc, result)) == result);
+            }
+
+            SECTION("test")
+            {
+                // The patch
+                json patch = R"(
+                    [
+                        {"op": "test", "path": "/best_biscuit/name", "value": "Choco Liebniz"}
+                    ]
+                )"_json;
+
+                // the test will fail
+                CHECK_THROWS_AS(doc.patch(patch), json::other_error&);
+#if JSON_DIAGNOSTICS
+                CHECK_THROWS_WITH_STD_STR(doc.patch(patch), "[json.exception.other_error.501] (/0) unsuccessful: " + patch[0].dump());
+#else
+                CHECK_THROWS_WITH_STD_STR(doc.patch(patch), "[json.exception.other_error.501] unsuccessful: " + patch[0].dump());
+#endif
+            }
+        }
+    }
+
+    SECTION("Examples from bruth.github.io/jsonpatch-js")
+    {
+        SECTION("add")
+        {
+            CHECK(R"( {} )"_json.patch(
+                      R"( [{"op": "add", "path": "/foo", "value": "bar"}] )"_json
+                  ) == R"( {"foo": "bar"} )"_json);
+
+            CHECK(R"( {"foo": [1, 3]} )"_json.patch(
+                      R"( [{"op": "add", "path": "/foo", "value": "bar"}] )"_json
+                  ) == R"( {"foo": "bar"} )"_json);
+
+            CHECK(R"( {"foo": [{}]} )"_json.patch(
+                      R"( [{"op": "add", "path": "/foo/0/bar", "value": "baz"}] )"_json
+                  ) == R"( {"foo": [{"bar": "baz"}]} )"_json);
+        }
+
+        SECTION("remove")
+        {
+            CHECK(R"( {"foo": "bar"} )"_json.patch(
+                      R"( [{"op": "remove", "path": "/foo"}] )"_json
+                  ) == R"( {} )"_json);
+
+            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(
+                      R"( [{"op": "remove", "path": "/foo/1"}] )"_json
+                  ) == R"( {"foo": [1, 3]} )"_json);
+
+            CHECK(R"( {"foo": [{"bar": "baz"}]} )"_json.patch(
+                      R"( [{"op": "remove", "path": "/foo/0/bar"}] )"_json
+                  ) == R"( {"foo": [{}]} )"_json);
+        }
+
+        SECTION("replace")
+        {
+            CHECK(R"( {"foo": "bar"} )"_json.patch(
+                      R"( [{"op": "replace", "path": "/foo", "value": 1}] )"_json
+                  ) == R"( {"foo": 1} )"_json);
+
+            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(
+                      R"( [{"op": "replace", "path": "/foo/1", "value": 4}] )"_json
+                  ) == R"( {"foo": [1, 4, 3]} )"_json);
+
+            CHECK(R"( {"foo": [{"bar": "baz"}]} )"_json.patch(
+                      R"( [{"op": "replace", "path": "/foo/0/bar", "value": 1}] )"_json
+                  ) == R"( {"foo": [{"bar": 1}]} )"_json);
+        }
+
+        SECTION("move")
+        {
+            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(
+                      R"( [{"op": "move", "from": "/foo", "path": "/bar"}] )"_json
+                  ) == R"( {"bar": [1, 2, 3]} )"_json);
+        }
+
+        SECTION("copy")
+        {
+            CHECK(R"( {"foo": [1, 2, 3]} )"_json.patch(
+                      R"( [{"op": "copy", "from": "/foo/1", "path": "/bar"}] )"_json
+                  ) == R"( {"foo": [1, 2, 3], "bar": 2} )"_json);
+        }
+
+        SECTION("copy")
+        {
+            CHECK_NOTHROW(R"( {"foo": "bar"} )"_json.patch(
+                              R"( [{"op": "test", "path": "/foo", "value": "bar"}] )"_json));
+        }
+    }
+
+    SECTION("Tests from github.com/json-patch/json-patch-tests")
+    {
+        for (const auto* filename :
+                {
+                    TEST_DATA_DIRECTORY "/json-patch-tests/spec_tests.json",
+                    TEST_DATA_DIRECTORY "/json-patch-tests/tests.json"
+                })
+        {
+            CAPTURE(filename)
+            std::ifstream f(filename);
+            json const suite = json::parse(f);
+
+            for (const auto& test : suite)
+            {
+                INFO_WITH_TEMP(test.value("comment", ""));
+
+                // skip tests marked as disabled
+                if (test.value("disabled", false))
+                {
+                    continue;
+                }
+
+                const auto& doc = test["doc"];
+                const auto& patch = test["patch"];
+
+                if (test.count("error") == 0) // NOLINT(readability-container-contains)
+                {
+                    // if an expected value is given, use it; use doc otherwise
+                    const auto& expected = test.value("expected", doc);
+                    CHECK(doc.patch(patch) == expected);
+                }
+                else
+                {
+                    CHECK_THROWS(doc.patch(patch));
+                }
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-json_pointer.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-json_pointer.cpp
new file mode 100644
index 00000000..beb24cc9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-json_pointer.cpp
@@ -0,0 +1,787 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <map>
+#include <sstream>
+
+TEST_CASE("JSON pointers")
+{
+    SECTION("errors")
+    {
+        CHECK_THROWS_WITH_AS(json::json_pointer("foo"),
+                             "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'", json::parse_error&);
+
+        CHECK_THROWS_WITH_AS(json::json_pointer("/~~"),
+                             "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&);
+
+        CHECK_THROWS_WITH_AS(json::json_pointer("/~"),
+                             "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&);
+
+        json::json_pointer p;
+        CHECK_THROWS_WITH_AS(p.top(),
+                             "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&);
+        CHECK_THROWS_WITH_AS(p.pop_back(),
+                             "[json.exception.out_of_range.405] JSON pointer has no parent", json::out_of_range&);
+
+        SECTION("array index error")
+        {
+            json v = {1, 2, 3, 4};
+            json::json_pointer const ptr("/10e");
+            CHECK_THROWS_WITH_AS(v[ptr],
+                                 "[json.exception.out_of_range.404] unresolved reference token '10e'", json::out_of_range&);
+        }
+    }
+
+    SECTION("examples from RFC 6901")
+    {
+        SECTION("nonconst access")
+        {
+            json j = R"(
+            {
+                "foo": ["bar", "baz"],
+                "": 0,
+                "a/b": 1,
+                "c%d": 2,
+                "e^f": 3,
+                "g|h": 4,
+                "i\\j": 5,
+                "k\"l": 6,
+                " ": 7,
+                "m~n": 8
+            }
+            )"_json;
+
+            // the whole document
+            CHECK(j[json::json_pointer()] == j);
+            CHECK(j[json::json_pointer("")] == j);
+            CHECK(j.contains(json::json_pointer()));
+            CHECK(j.contains(json::json_pointer("")));
+
+            // array access
+            CHECK(j[json::json_pointer("/foo")] == j["foo"]);
+            CHECK(j.contains(json::json_pointer("/foo")));
+            CHECK(j[json::json_pointer("/foo/0")] == j["foo"][0]);
+            CHECK(j[json::json_pointer("/foo/1")] == j["foo"][1]);
+            CHECK(j["/foo/1"_json_pointer] == j["foo"][1]);
+            CHECK(j.contains(json::json_pointer("/foo/0")));
+            CHECK(j.contains(json::json_pointer("/foo/1")));
+            CHECK(!j.contains(json::json_pointer("/foo/3")));
+            CHECK(!j.contains(json::json_pointer("/foo/+")));
+            CHECK(!j.contains(json::json_pointer("/foo/1+2")));
+            CHECK(!j.contains(json::json_pointer("/foo/-")));
+
+            // checked array access
+            CHECK(j.at(json::json_pointer("/foo/0")) == j["foo"][0]);
+            CHECK(j.at(json::json_pointer("/foo/1")) == j["foo"][1]);
+
+            // empty string access
+            CHECK(j[json::json_pointer("/")] == j[""]);
+            CHECK(j.contains(json::json_pointer("")));
+            CHECK(j.contains(json::json_pointer("/")));
+
+            // other cases
+            CHECK(j[json::json_pointer("/ ")] == j[" "]);
+            CHECK(j[json::json_pointer("/c%d")] == j["c%d"]);
+            CHECK(j[json::json_pointer("/e^f")] == j["e^f"]);
+            CHECK(j[json::json_pointer("/g|h")] == j["g|h"]);
+            CHECK(j[json::json_pointer("/i\\j")] == j["i\\j"]);
+            CHECK(j[json::json_pointer("/k\"l")] == j["k\"l"]);
+
+            // contains
+            CHECK(j.contains(json::json_pointer("/ ")));
+            CHECK(j.contains(json::json_pointer("/c%d")));
+            CHECK(j.contains(json::json_pointer("/e^f")));
+            CHECK(j.contains(json::json_pointer("/g|h")));
+            CHECK(j.contains(json::json_pointer("/i\\j")));
+            CHECK(j.contains(json::json_pointer("/k\"l")));
+
+            // checked access
+            CHECK(j.at(json::json_pointer("/ ")) == j[" "]);
+            CHECK(j.at(json::json_pointer("/c%d")) == j["c%d"]);
+            CHECK(j.at(json::json_pointer("/e^f")) == j["e^f"]);
+            CHECK(j.at(json::json_pointer("/g|h")) == j["g|h"]);
+            CHECK(j.at(json::json_pointer("/i\\j")) == j["i\\j"]);
+            CHECK(j.at(json::json_pointer("/k\"l")) == j["k\"l"]);
+
+            // escaped access
+            CHECK(j[json::json_pointer("/a~1b")] == j["a/b"]);
+            CHECK(j[json::json_pointer("/m~0n")] == j["m~n"]);
+            CHECK(j.contains(json::json_pointer("/a~1b")));
+            CHECK(j.contains(json::json_pointer("/m~0n")));
+
+            // unescaped access to nonexisting values yield object creation
+            CHECK(!j.contains(json::json_pointer("/a/b")));
+            CHECK_NOTHROW(j[json::json_pointer("/a/b")] = 42);
+            CHECK(j.contains(json::json_pointer("/a/b")));
+            CHECK(j["a"]["b"] == json(42));
+
+            CHECK(!j.contains(json::json_pointer("/a/c/1")));
+            CHECK_NOTHROW(j[json::json_pointer("/a/c/1")] = 42);
+            CHECK(j["a"]["c"] == json({nullptr, 42}));
+            CHECK(j.contains(json::json_pointer("/a/c/1")));
+
+            CHECK(!j.contains(json::json_pointer("/a/d/-")));
+            CHECK_NOTHROW(j[json::json_pointer("/a/d/-")] = 42);
+            CHECK(!j.contains(json::json_pointer("/a/d/-")));
+            CHECK(j["a"]["d"] == json::array({42}));
+            // "/a/b" works for JSON {"a": {"b": 42}}
+            CHECK(json({{"a", {{"b", 42}}}})[json::json_pointer("/a/b")] == json(42));
+
+            // unresolved access
+            json j_primitive = 1;
+            CHECK_THROWS_WITH_AS(j_primitive["/foo"_json_pointer],
+                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
+            CHECK_THROWS_WITH_AS(j_primitive.at("/foo"_json_pointer),
+                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
+            CHECK(!j_primitive.contains(json::json_pointer("/foo")));
+        }
+
+        SECTION("const access")
+        {
+            const json j = R"(
+            {
+                "foo": ["bar", "baz"],
+                "": 0,
+                "a/b": 1,
+                "c%d": 2,
+                "e^f": 3,
+                "g|h": 4,
+                "i\\j": 5,
+                "k\"l": 6,
+                " ": 7,
+                "m~n": 8
+            }
+            )"_json;
+
+            // the whole document
+            CHECK(j[json::json_pointer()] == j);
+            CHECK(j[json::json_pointer("")] == j);
+
+            // array access
+            CHECK(j[json::json_pointer("/foo")] == j["foo"]);
+            CHECK(j[json::json_pointer("/foo/0")] == j["foo"][0]);
+            CHECK(j[json::json_pointer("/foo/1")] == j["foo"][1]);
+            CHECK(j["/foo/1"_json_pointer] == j["foo"][1]);
+
+            // checked array access
+            CHECK(j.at(json::json_pointer("/foo/0")) == j["foo"][0]);
+            CHECK(j.at(json::json_pointer("/foo/1")) == j["foo"][1]);
+
+            // empty string access
+            CHECK(j[json::json_pointer("/")] == j[""]);
+
+            // other cases
+            CHECK(j[json::json_pointer("/ ")] == j[" "]);
+            CHECK(j[json::json_pointer("/c%d")] == j["c%d"]);
+            CHECK(j[json::json_pointer("/e^f")] == j["e^f"]);
+            CHECK(j[json::json_pointer("/g|h")] == j["g|h"]);
+            CHECK(j[json::json_pointer("/i\\j")] == j["i\\j"]);
+            CHECK(j[json::json_pointer("/k\"l")] == j["k\"l"]);
+
+            // checked access
+            CHECK(j.at(json::json_pointer("/ ")) == j[" "]);
+            CHECK(j.at(json::json_pointer("/c%d")) == j["c%d"]);
+            CHECK(j.at(json::json_pointer("/e^f")) == j["e^f"]);
+            CHECK(j.at(json::json_pointer("/g|h")) == j["g|h"]);
+            CHECK(j.at(json::json_pointer("/i\\j")) == j["i\\j"]);
+            CHECK(j.at(json::json_pointer("/k\"l")) == j["k\"l"]);
+
+            // escaped access
+            CHECK(j[json::json_pointer("/a~1b")] == j["a/b"]);
+            CHECK(j[json::json_pointer("/m~0n")] == j["m~n"]);
+
+            // unescaped access
+            CHECK_THROWS_WITH_AS(j.at(json::json_pointer("/a/b")),
+                                 "[json.exception.out_of_range.403] key 'a' not found", json::out_of_range&);
+
+            // unresolved access
+            const json j_primitive = 1;
+            CHECK_THROWS_WITH_AS(j_primitive["/foo"_json_pointer],
+                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
+            CHECK_THROWS_WITH_AS(j_primitive.at("/foo"_json_pointer),
+                                 "[json.exception.out_of_range.404] unresolved reference token 'foo'", json::out_of_range&);
+        }
+
+        SECTION("user-defined string literal")
+        {
+            json j = R"(
+            {
+                "foo": ["bar", "baz"],
+                "": 0,
+                "a/b": 1,
+                "c%d": 2,
+                "e^f": 3,
+                "g|h": 4,
+                "i\\j": 5,
+                "k\"l": 6,
+                " ": 7,
+                "m~n": 8
+            }
+            )"_json;
+
+            // the whole document
+            CHECK(j[""_json_pointer] == j);
+            CHECK(j.contains(""_json_pointer));
+
+            // array access
+            CHECK(j["/foo"_json_pointer] == j["foo"]);
+            CHECK(j["/foo/0"_json_pointer] == j["foo"][0]);
+            CHECK(j["/foo/1"_json_pointer] == j["foo"][1]);
+            CHECK(j.contains("/foo"_json_pointer));
+            CHECK(j.contains("/foo/0"_json_pointer));
+            CHECK(j.contains("/foo/1"_json_pointer));
+            CHECK(!j.contains("/foo/-"_json_pointer));
+        }
+    }
+
+    SECTION("array access")
+    {
+        SECTION("nonconst access")
+        {
+            json j = {1, 2, 3};
+            const json j_const = j;
+
+            // check reading access
+            CHECK(j["/0"_json_pointer] == j[0]);
+            CHECK(j["/1"_json_pointer] == j[1]);
+            CHECK(j["/2"_json_pointer] == j[2]);
+
+            // assign to existing index
+            j["/1"_json_pointer] = 13;
+            CHECK(j[1] == json(13));
+
+            // assign to nonexisting index
+            j["/3"_json_pointer] = 33;
+            CHECK(j[3] == json(33));
+
+            // assign to nonexisting index (with gap)
+            j["/5"_json_pointer] = 55;
+            CHECK(j == json({1, 13, 3, 33, nullptr, 55}));
+
+            // error with leading 0
+            CHECK_THROWS_WITH_AS(j["/01"_json_pointer],
+                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(j_const["/01"_json_pointer],
+                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(j.at("/01"_json_pointer),
+                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(j_const.at("/01"_json_pointer),
+                                 "[json.exception.parse_error.106] parse error: array index '01' must not begin with '0'", json::parse_error&);
+
+            CHECK(!j.contains("/01"_json_pointer));
+            CHECK(!j.contains("/01"_json_pointer));
+            CHECK(!j_const.contains("/01"_json_pointer));
+            CHECK(!j_const.contains("/01"_json_pointer));
+
+            // error with incorrect numbers
+            CHECK_THROWS_WITH_AS(j["/one"_json_pointer] = 1,
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+            CHECK_THROWS_WITH_AS(j_const["/one"_json_pointer] == 1,
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+
+            CHECK_THROWS_WITH_AS(j.at("/one"_json_pointer) = 1,
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+            CHECK_THROWS_WITH_AS(j_const.at("/one"_json_pointer) == 1,
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+
+            CHECK_THROWS_WITH_AS(j["/+1"_json_pointer] = 1,
+                                 "[json.exception.parse_error.109] parse error: array index '+1' is not a number", json::parse_error&);
+            CHECK_THROWS_WITH_AS(j_const["/+1"_json_pointer] == 1,
+                                 "[json.exception.parse_error.109] parse error: array index '+1' is not a number", json::parse_error&);
+
+            CHECK_THROWS_WITH_AS(j["/1+1"_json_pointer] = 1,
+                                 "[json.exception.out_of_range.404] unresolved reference token '1+1'", json::out_of_range&);
+            CHECK_THROWS_WITH_AS(j_const["/1+1"_json_pointer] == 1,
+                                 "[json.exception.out_of_range.404] unresolved reference token '1+1'", json::out_of_range&);
+
+            {
+                auto too_large_index = std::to_string((std::numeric_limits<unsigned long long>::max)()) + "1";
+                json::json_pointer const jp(std::string("/") + too_large_index);
+                std::string const throw_msg = std::string("[json.exception.out_of_range.404] unresolved reference token '") + too_large_index + "'";
+
+                CHECK_THROWS_WITH_AS(j[jp] = 1, throw_msg.c_str(), json::out_of_range&);
+                CHECK_THROWS_WITH_AS(j_const[jp] == 1, throw_msg.c_str(), json::out_of_range&);
+            }
+
+            // on some machines, the check below is not constant
+            DOCTEST_MSVC_SUPPRESS_WARNING_PUSH
+            DOCTEST_MSVC_SUPPRESS_WARNING(4127)
+
+            if (sizeof(typename json::size_type) < sizeof(unsigned long long))
+            {
+                auto size_type_max_uul = static_cast<unsigned long long>((std::numeric_limits<json::size_type>::max)());
+                auto too_large_index = std::to_string(size_type_max_uul);
+                json::json_pointer const jp(std::string("/") + too_large_index);
+                std::string const throw_msg = std::string("[json.exception.out_of_range.410] array index ") + too_large_index + " exceeds size_type";
+
+                CHECK_THROWS_WITH_AS(j[jp] = 1, throw_msg.c_str(), json::out_of_range&);
+                CHECK_THROWS_WITH_AS(j_const[jp] == 1, throw_msg.c_str(), json::out_of_range&);
+            }
+
+            DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+            CHECK_THROWS_WITH_AS(j.at("/one"_json_pointer) = 1,
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+            CHECK_THROWS_WITH_AS(j_const.at("/one"_json_pointer) == 1,
+                                 "[json.exception.parse_error.109] parse error: array index 'one' is not a number", json::parse_error&);
+
+            CHECK(!j.contains("/one"_json_pointer));
+            CHECK(!j.contains("/one"_json_pointer));
+            CHECK(!j_const.contains("/one"_json_pointer));
+            CHECK(!j_const.contains("/one"_json_pointer));
+
+            CHECK_THROWS_WITH_AS(json({{"/list/0", 1}, {"/list/1", 2}, {"/list/three", 3}}).unflatten(),
+            "[json.exception.parse_error.109] parse error: array index 'three' is not a number", json::parse_error&);
+
+            // assign to "-"
+            j["/-"_json_pointer] = 99;
+            CHECK(j == json({1, 13, 3, 33, nullptr, 55, 99}));
+
+            // error when using "-" in const object
+            CHECK_THROWS_WITH_AS(j_const["/-"_json_pointer],
+                                 "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
+            CHECK(!j_const.contains("/-"_json_pointer));
+
+            // error when using "-" with at
+            CHECK_THROWS_WITH_AS(j.at("/-"_json_pointer),
+                                 "[json.exception.out_of_range.402] array index '-' (7) is out of range", json::out_of_range&);
+            CHECK_THROWS_WITH_AS(j_const.at("/-"_json_pointer),
+                                 "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
+            CHECK(!j_const.contains("/-"_json_pointer));
+        }
+
+        SECTION("const access")
+        {
+            const json j = {1, 2, 3};
+
+            // check reading access
+            CHECK(j["/0"_json_pointer] == j[0]);
+            CHECK(j["/1"_json_pointer] == j[1]);
+            CHECK(j["/2"_json_pointer] == j[2]);
+
+            // assign to nonexisting index
+            CHECK_THROWS_WITH_AS(j.at("/3"_json_pointer),
+                                 "[json.exception.out_of_range.401] array index 3 is out of range", json::out_of_range&);
+            CHECK(!j.contains("/3"_json_pointer));
+
+            // assign to nonexisting index (with gap)
+            CHECK_THROWS_WITH_AS(j.at("/5"_json_pointer),
+                                 "[json.exception.out_of_range.401] array index 5 is out of range", json::out_of_range&);
+            CHECK(!j.contains("/5"_json_pointer));
+
+            // assign to "-"
+            CHECK_THROWS_WITH_AS(j["/-"_json_pointer],
+                                 "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
+            CHECK_THROWS_WITH_AS(j.at("/-"_json_pointer),
+                                 "[json.exception.out_of_range.402] array index '-' (3) is out of range", json::out_of_range&);
+            CHECK(!j.contains("/-"_json_pointer));
+        }
+    }
+
+    SECTION("flatten")
+    {
+        json j =
+        {
+            {"pi", 3.141},
+            {"happy", true},
+            {"name", "Niels"},
+            {"nothing", nullptr},
+            {
+                "answer", {
+                    {"everything", 42}
+                }
+            },
+            {"list", {1, 0, 2}},
+            {
+                "object", {
+                    {"currency", "USD"},
+                    {"value", 42.99},
+                    {"", "empty string"},
+                    {"/", "slash"},
+                    {"~", "tilde"},
+                    {"~1", "tilde1"}
+                }
+            }
+        };
+
+        json j_flatten =
+        {
+            {"/pi", 3.141},
+            {"/happy", true},
+            {"/name", "Niels"},
+            {"/nothing", nullptr},
+            {"/answer/everything", 42},
+            {"/list/0", 1},
+            {"/list/1", 0},
+            {"/list/2", 2},
+            {"/object/currency", "USD"},
+            {"/object/value", 42.99},
+            {"/object/", "empty string"},
+            {"/object/~1", "slash"},
+            {"/object/~0", "tilde"},
+            {"/object/~01", "tilde1"}
+        };
+
+        // check if flattened result is as expected
+        CHECK(j.flatten() == j_flatten);
+
+        // check if unflattened result is as expected
+        CHECK(j_flatten.unflatten() == j);
+
+        // error for nonobjects
+        CHECK_THROWS_WITH_AS(json(1).unflatten(),
+                             "[json.exception.type_error.314] only objects can be unflattened", json::type_error&);
+
+        // error for nonprimitve values
+#if JSON_DIAGNOSTICS
+        CHECK_THROWS_WITH_AS(json({{"/1", {1, 2, 3}}}).unflatten(), "[json.exception.type_error.315] (/~11) values in object must be primitive", json::type_error&);
+#else
+        CHECK_THROWS_WITH_AS(json({{"/1", {1, 2, 3}}}).unflatten(), "[json.exception.type_error.315] values in object must be primitive", json::type_error&);
+#endif
+
+        // error for conflicting values
+        json const j_error = {{"", 42}, {"/foo", 17}};
+        CHECK_THROWS_WITH_AS(j_error.unflatten(),
+                             "[json.exception.type_error.313] invalid value to unflatten", json::type_error&);
+
+        // explicit roundtrip check
+        CHECK(j.flatten().unflatten() == j);
+
+        // roundtrip for primitive values
+        json j_null;
+        CHECK(j_null.flatten().unflatten() == j_null);
+        json j_number = 42;
+        CHECK(j_number.flatten().unflatten() == j_number);
+        json j_boolean = false;
+        CHECK(j_boolean.flatten().unflatten() == j_boolean);
+        json j_string = "foo";
+        CHECK(j_string.flatten().unflatten() == j_string);
+
+        // roundtrip for empty structured values (will be unflattened to null)
+        json const j_array(json::value_t::array);
+        CHECK(j_array.flatten().unflatten() == json());
+        json const j_object(json::value_t::object);
+        CHECK(j_object.flatten().unflatten() == json());
+    }
+
+    SECTION("string representation")
+    {
+        for (const auto* ptr_str :
+                {"", "/foo", "/foo/0", "/", "/a~1b", "/c%d", "/e^f", "/g|h", "/i\\j", "/k\"l", "/ ", "/m~0n"
+                })
+        {
+            json::json_pointer const ptr(ptr_str);
+            std::stringstream ss;
+            ss << ptr;
+            CHECK(ptr.to_string() == ptr_str);
+            CHECK(std::string(ptr) == ptr_str);
+            CHECK(ss.str() == ptr_str);
+        }
+    }
+
+    SECTION("conversion")
+    {
+        SECTION("array")
+        {
+            json j;
+            // all numbers -> array
+            j["/12"_json_pointer] = 0;
+            CHECK(j.is_array());
+        }
+
+        SECTION("object")
+        {
+            json j;
+            // contains a number, but is not a number -> object
+            j["/a12"_json_pointer] = 0;
+            CHECK(j.is_object());
+        }
+    }
+
+    SECTION("empty, push, pop and parent")
+    {
+        const json j =
+        {
+            {"", "Hello"},
+            {"pi", 3.141},
+            {"happy", true},
+            {"name", "Niels"},
+            {"nothing", nullptr},
+            {
+                "answer", {
+                    {"everything", 42}
+                }
+            },
+            {"list", {1, 0, 2}},
+            {
+                "object", {
+                    {"currency", "USD"},
+                    {"value", 42.99},
+                    {"", "empty string"},
+                    {"/", "slash"},
+                    {"~", "tilde"},
+                    {"~1", "tilde1"}
+                }
+            }
+        };
+
+        // empty json_pointer returns the root JSON-object
+        auto ptr = ""_json_pointer;
+        CHECK(ptr.empty());
+        CHECK(j[ptr] == j);
+
+        // simple field access
+        ptr.push_back("pi");
+        CHECK(!ptr.empty());
+        CHECK(j[ptr] == j["pi"]);
+
+        ptr.pop_back();
+        CHECK(ptr.empty());
+        CHECK(j[ptr] == j);
+
+        // object and children access
+        const std::string answer("answer");
+        ptr.push_back(answer);
+        ptr.push_back("everything");
+        CHECK(!ptr.empty());
+        CHECK(j[ptr] == j["answer"]["everything"]);
+
+        // check access via const pointer
+        const auto cptr = ptr;
+        CHECK(cptr.back() == "everything");
+
+        ptr.pop_back();
+        ptr.pop_back();
+        CHECK(ptr.empty());
+        CHECK(j[ptr] == j);
+
+        // push key which has to be encoded
+        ptr.push_back("object");
+        ptr.push_back("/");
+        CHECK(j[ptr] == j["object"]["/"]);
+        CHECK(ptr.to_string() == "/object/~1");
+
+        CHECK(j[ptr.parent_pointer()] == j["object"]);
+        ptr = ptr.parent_pointer().parent_pointer();
+        CHECK(ptr.empty());
+        CHECK(j[ptr] == j);
+        // parent-pointer of the empty json_pointer is empty
+        ptr = ptr.parent_pointer();
+        CHECK(ptr.empty());
+        CHECK(j[ptr] == j);
+
+        CHECK_THROWS_WITH(ptr.pop_back(),
+                          "[json.exception.out_of_range.405] JSON pointer has no parent");
+    }
+
+    SECTION("operators")
+    {
+        const json j =
+        {
+            {"", "Hello"},
+            {"pi", 3.141},
+            {"happy", true},
+            {"name", "Niels"},
+            {"nothing", nullptr},
+            {
+                "answer", {
+                    {"everything", 42}
+                }
+            },
+            {"list", {1, 0, 2}},
+            {
+                "object", {
+                    {"currency", "USD"},
+                    {"value", 42.99},
+                    {"", "empty string"},
+                    {"/", "slash"},
+                    {"~", "tilde"},
+                    {"~1", "tilde1"}
+                }
+            }
+        };
+
+        // empty json_pointer returns the root JSON-object
+        auto ptr = ""_json_pointer;
+        CHECK(j[ptr] == j);
+
+        // simple field access
+        ptr = ptr / "pi";
+        CHECK(j[ptr] == j["pi"]);
+
+        ptr.pop_back();
+        CHECK(j[ptr] == j);
+
+        // object and children access
+        const std::string answer("answer");
+        ptr /= answer;
+        ptr = ptr / "everything";
+        CHECK(j[ptr] == j["answer"]["everything"]);
+
+        ptr.pop_back();
+        ptr.pop_back();
+        CHECK(j[ptr] == j);
+
+        CHECK(ptr / ""_json_pointer == ptr);
+        CHECK(j["/answer"_json_pointer / "/everything"_json_pointer] == j["answer"]["everything"]);
+
+        // list children access
+        CHECK(j["/list"_json_pointer / 1] == j["list"][1]);
+
+        // push key which has to be encoded
+        ptr /= "object";
+        ptr = ptr / "/";
+        CHECK(j[ptr] == j["object"]["/"]);
+        CHECK(ptr.to_string() == "/object/~1");
+    }
+
+    SECTION("equality comparison")
+    {
+        const char* ptr_cpstring = "/foo/bar";
+        const char ptr_castring[] = "/foo/bar"; // NOLINT(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+        std::string ptr_string{"/foo/bar"};
+        auto ptr1 = json::json_pointer(ptr_string);
+        auto ptr2 = json::json_pointer(ptr_string);
+
+        // build with C++20 to test rewritten candidates
+        // JSON_HAS_CPP_20
+
+        CHECK(ptr1 == ptr2);
+
+        CHECK(ptr1 == "/foo/bar");
+        CHECK(ptr1 == ptr_cpstring);
+        CHECK(ptr1 == ptr_castring);
+        CHECK(ptr1 == ptr_string);
+
+        CHECK("/foo/bar" == ptr1);
+        CHECK(ptr_cpstring == ptr1);
+        CHECK(ptr_castring == ptr1);
+        CHECK(ptr_string == ptr1);
+
+        CHECK_FALSE(ptr1 != ptr2);
+
+        CHECK_FALSE(ptr1 != "/foo/bar");
+        CHECK_FALSE(ptr1 != ptr_cpstring);
+        CHECK_FALSE(ptr1 != ptr_castring);
+        CHECK_FALSE(ptr1 != ptr_string);
+
+        CHECK_FALSE("/foo/bar" != ptr1);
+        CHECK_FALSE(ptr_cpstring != ptr1);
+        CHECK_FALSE(ptr_castring != ptr1);
+        CHECK_FALSE(ptr_string != ptr1);
+
+        SECTION("exceptions")
+        {
+            CHECK_THROWS_WITH_AS(ptr1 == "foo",
+                                 "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'", json::parse_error&);
+            CHECK_THROWS_WITH_AS("foo" == ptr1,
+                                 "[json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'foo'", json::parse_error&);
+            CHECK_THROWS_WITH_AS(ptr1 == "/~~",
+                                 "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&);
+            CHECK_THROWS_WITH_AS("/~~" == ptr1,
+                                 "[json.exception.parse_error.108] parse error: escape character '~' must be followed with '0' or '1'", json::parse_error&);
+        }
+    }
+
+    SECTION("less-than comparison")
+    {
+        auto ptr1 = json::json_pointer("/foo/a");
+        auto ptr2 = json::json_pointer("/foo/b");
+
+        CHECK(ptr1 < ptr2);
+        CHECK_FALSE(ptr2 < ptr1);
+
+        // build with C++20
+        // JSON_HAS_CPP_20
+#if JSON_HAS_THREE_WAY_COMPARISON
+        CHECK((ptr1 <=> ptr2) == std::strong_ordering::less); // *NOPAD*
+        CHECK(ptr2 > ptr1);
+#endif
+    }
+
+    SECTION("usable as map key")
+    {
+        auto ptr = json::json_pointer("/foo");
+        std::map<json::json_pointer, int> m;
+
+        m[ptr] = 42;
+
+        CHECK(m.find(ptr) != m.end());
+    }
+
+    SECTION("backwards compatibility and mixing")
+    {
+        json j = R"(
+        {
+            "foo": ["bar", "baz"]
+        }
+        )"_json;
+
+        using nlohmann::ordered_json;
+        using json_ptr_str = nlohmann::json_pointer<std::string>;
+        using json_ptr_j = nlohmann::json_pointer<json>;
+        using json_ptr_oj = nlohmann::json_pointer<ordered_json>;
+
+        CHECK(std::is_same<json_ptr_str::string_t, json::json_pointer::string_t>::value);
+        CHECK(std::is_same<json_ptr_str::string_t, ordered_json::json_pointer::string_t>::value);
+        CHECK(std::is_same<json_ptr_str::string_t, json_ptr_j::string_t>::value);
+        CHECK(std::is_same<json_ptr_str::string_t, json_ptr_oj::string_t>::value);
+
+        std::string const ptr_string{"/foo/0"};
+        json_ptr_str ptr{ptr_string};
+        json_ptr_j ptr_j{ptr_string};
+        json_ptr_oj ptr_oj{ptr_string};
+
+        CHECK(j.contains(ptr));
+        CHECK(j.contains(ptr_j));
+        CHECK(j.contains(ptr_oj));
+
+        CHECK(j.at(ptr) == j.at(ptr_j));
+        CHECK(j.at(ptr) == j.at(ptr_oj));
+
+        CHECK(j[ptr] == j[ptr_j]);
+        CHECK(j[ptr] == j[ptr_oj]);
+
+        CHECK(j.value(ptr, "x") == j.value(ptr_j, "x"));
+        CHECK(j.value(ptr, "x") == j.value(ptr_oj, "x"));
+
+        CHECK(ptr == ptr_j);
+        CHECK(ptr == ptr_oj);
+        CHECK_FALSE(ptr != ptr_j);
+        CHECK_FALSE(ptr != ptr_oj);
+
+        SECTION("equality comparison")
+        {
+            // build with C++20 to test rewritten candidates
+            // JSON_HAS_CPP_20
+
+            CHECK(ptr == ptr_j);
+            CHECK(ptr == ptr_oj);
+            CHECK(ptr_j == ptr);
+            CHECK(ptr_j == ptr_oj);
+            CHECK(ptr_oj == ptr_j);
+            CHECK(ptr_oj == ptr);
+
+            CHECK_FALSE(ptr != ptr_j);
+            CHECK_FALSE(ptr != ptr_oj);
+            CHECK_FALSE(ptr_j != ptr);
+            CHECK_FALSE(ptr_j != ptr_oj);
+            CHECK_FALSE(ptr_oj != ptr_j);
+            CHECK_FALSE(ptr_oj != ptr);
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-large_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-large_json.cpp
new file mode 100644
index 00000000..4ffc1d01
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-large_json.cpp
@@ -0,0 +1,29 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <algorithm>
+
+TEST_CASE("tests on very large JSONs")
+{
+    SECTION("issue #1419 - Segmentation fault (stack overflow) due to unbounded recursion")
+    {
+        const auto depth = 5000000;
+
+        std::string s(static_cast<std::size_t>(2 * depth), '[');
+        std::fill(s.begin() + depth, s.end(), ']');
+
+        json _;
+        CHECK_NOTHROW(_ = nlohmann::json::parse(s));
+    }
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-locale-cpp.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-locale-cpp.cpp
new file mode 100644
index 00000000..529c95cc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-locale-cpp.cpp
@@ -0,0 +1,161 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <clocale>
+
+struct ParserImpl final: public nlohmann::json_sax<json>
+{
+    bool null() override
+    {
+        return true;
+    }
+    bool boolean(bool /*val*/) override
+    {
+        return true;
+    }
+    bool number_integer(json::number_integer_t /*val*/) override
+    {
+        return true;
+    }
+    bool number_unsigned(json::number_unsigned_t /*val*/) override
+    {
+        return true;
+    }
+    bool number_float(json::number_float_t /*val*/, const json::string_t& s) override
+    {
+        float_string_copy = s;
+        return true;
+    }
+    bool string(json::string_t& /*val*/) override
+    {
+        return true;
+    }
+    bool binary(json::binary_t& /*val*/) override
+    {
+        return true;
+    }
+    bool start_object(std::size_t /*val*/) override
+    {
+        return true;
+    }
+    bool key(json::string_t& /*val*/) override
+    {
+        return true;
+    }
+    bool end_object() override
+    {
+        return true;
+    }
+    bool start_array(std::size_t /*val*/) override
+    {
+        return true;
+    }
+    bool end_array() override
+    {
+        return true;
+    }
+    bool parse_error(std::size_t /*val*/, const std::string& /*val*/, const nlohmann::detail::exception& /*val*/) override
+    {
+        return false;
+    }
+
+    ~ParserImpl() override;
+
+    ParserImpl()
+        : float_string_copy("not set")
+    {}
+
+    ParserImpl(const ParserImpl& other)
+        : float_string_copy(other.float_string_copy)
+    {}
+
+    ParserImpl(ParserImpl&& other) noexcept
+        : float_string_copy(std::move(other.float_string_copy))
+    {}
+
+    ParserImpl& operator=(const ParserImpl& other)
+    {
+        if (this != &other)
+        {
+            float_string_copy = other.float_string_copy;
+        }
+        return *this;
+    }
+
+    ParserImpl& operator=(ParserImpl&& other) noexcept
+    {
+        if (this != &other)
+        {
+            float_string_copy = std::move(other.float_string_copy);
+        }
+        return *this;
+    }
+
+    json::string_t float_string_copy;
+};
+
+ParserImpl::~ParserImpl() = default;
+
+TEST_CASE("locale-dependent test (LC_NUMERIC=C)")
+{
+    WARN_MESSAGE(std::setlocale(LC_NUMERIC, "C") != nullptr, "could not set locale");
+
+    SECTION("check if locale is properly set")
+    {
+        std::array<char, 6> buffer = {};
+        CHECK(std::snprintf(buffer.data(), buffer.size(), "%.2f", 12.34) == 5); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        CHECK(std::string(buffer.data()) == "12.34");
+    }
+
+    SECTION("parsing")
+    {
+        CHECK(json::parse("12.34").dump() == "12.34");
+    }
+
+    SECTION("SAX parsing")
+    {
+        ParserImpl sax {};
+        json::sax_parse( "12.34", &sax );
+        CHECK(sax.float_string_copy == "12.34");
+    }
+}
+
+TEST_CASE("locale-dependent test (LC_NUMERIC=de_DE)")
+{
+    if (std::setlocale(LC_NUMERIC, "de_DE") != nullptr)
+    {
+        SECTION("check if locale is properly set")
+        {
+            std::array<char, 6> buffer = {};
+            CHECK(std::snprintf(buffer.data(), buffer.size(), "%.2f", 12.34) == 5); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+            CHECK(std::string(buffer.data()) == "12,34");
+        }
+
+        SECTION("parsing")
+        {
+            CHECK(json::parse("12.34").dump() == "12.34");
+        }
+
+        SECTION("SAX parsing")
+        {
+            ParserImpl sax{};
+            json::sax_parse("12.34", &sax);
+            CHECK(sax.float_string_copy == "12.34");
+        }
+    }
+    else
+    {
+        MESSAGE("locale de_DE is not usable");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-merge_patch.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-merge_patch.cpp
new file mode 100644
index 00000000..411ac28d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-merge_patch.cpp
@@ -0,0 +1,244 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+TEST_CASE("JSON Merge Patch")
+{
+    SECTION("examples from RFC 7396")
+    {
+        SECTION("Section 1")
+        {
+            json document = R"({
+                "a": "b",
+                "c": {
+                    "d": "e",
+                    "f": "g"
+                }
+            })"_json;
+
+            json const patch = R"({
+                "a": "z",
+                "c": {
+                    "f": null
+                }
+            })"_json;
+
+            json expected = R"({
+                "a": "z",
+                "c": {
+                    "d": "e"
+                }
+            })"_json;
+
+            document.merge_patch(patch);
+            CHECK(document == expected);
+        }
+
+        SECTION("Section 3")
+        {
+            json document = R"({
+                "title": "Goodbye!",
+                "author": {
+                    "givenName": "John",
+                    "familyName": "Doe"
+                },
+                "tags": [
+                    "example",
+                    "sample"
+                ],
+                "content": "This will be unchanged"
+            })"_json;
+
+            json const patch = R"({
+                "title": "Hello!",
+                "phoneNumber": "+01-123-456-7890",
+                "author": {
+                    "familyName": null
+                },
+                "tags": [
+                    "example"
+                ]
+            })"_json;
+
+            json expected = R"({
+                "title": "Hello!",
+                "author": {
+                    "givenName": "John"
+                },
+                "tags": [
+                    "example"
+                ],
+                "content": "This will be unchanged",
+                "phoneNumber": "+01-123-456-7890"
+            })"_json;
+
+            document.merge_patch(patch);
+            CHECK(document == expected);
+        }
+
+        SECTION("Appendix A")
+        {
+            SECTION("Example 1")
+            {
+                json original = R"({"a":"b"})"_json;
+                json const patch = R"({"a":"c"})"_json;
+                json result = R"({"a":"c"})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 2")
+            {
+                json original = R"({"a":"b"})"_json;
+                json const patch = R"({"b":"c"})"_json;
+                json result = R"({"a":"b", "b":"c"})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 3")
+            {
+                json original = R"({"a":"b"})"_json;
+                json const patch = R"({"a":null})"_json;
+                json result = R"({})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 4")
+            {
+                json original = R"({"a":"b","b":"c"})"_json;
+                json const patch = R"({"a":null})"_json;
+                json result = R"({"b":"c"})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 5")
+            {
+                json original = R"({"a":["b"]})"_json;
+                json const patch = R"({"a":"c"})"_json;
+                json result = R"({"a":"c"})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 6")
+            {
+                json original = R"({"a":"c"})"_json;
+                json const patch = R"({"a":["b"]})"_json;
+                json result = R"({"a":["b"]})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 7")
+            {
+                json original = R"({"a":{"b": "c"}})"_json;
+                json const patch = R"({"a":{"b":"d","c":null}})"_json;
+                json result = R"({"a": {"b": "d"}})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 8")
+            {
+                json original = R"({"a":[{"b":"c"}]})"_json;
+                json const patch = R"({"a":[1]})"_json;
+                json result = R"({"a":[1]})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 9")
+            {
+                json original = R"(["a","b"])"_json;
+                json const patch = R"(["c","d"])"_json;
+                json result = R"(["c","d"])"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 10")
+            {
+                json original = R"({"a":"b"})"_json;
+                json const patch = R"(["c"])"_json;
+                json result = R"(["c"])"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 11")
+            {
+                json original = R"({"a":"foo"})"_json;
+                json const patch = R"(null)"_json;
+                json result = R"(null)"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 12")
+            {
+                json original = R"({"a":"foo"})"_json;
+                json const patch = R"("bar")"_json;
+                json result = R"("bar")"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 13")
+            {
+                json original = R"({"e":null})"_json;
+                json const patch = R"({"a":1})"_json;
+                json result = R"({"e":null,"a":1})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 14")
+            {
+                json original = R"([1,2])"_json;
+                json const patch = R"({"a":"b","c":null})"_json;
+                json result = R"({"a":"b"})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+
+            SECTION("Example 15")
+            {
+                json original = R"({})"_json;
+                json const patch = R"({"a":{"bb":{"ccc":null}}})"_json;
+                json result = R"({"a":{"bb":{}}})"_json;
+
+                original.merge_patch(patch);
+                CHECK(original == result);
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-meta.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-meta.cpp
new file mode 100644
index 00000000..50e6c891
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-meta.cpp
@@ -0,0 +1,36 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("version information")
+{
+    SECTION("meta()")
+    {
+        json j = json::meta();
+
+        CHECK(j["name"] == "JSON for Modern C++");
+        CHECK(j["copyright"] == "(C) 2013-2023 Niels Lohmann");
+        CHECK(j["url"] == "https://github.com/nlohmann/json");
+        CHECK(j["version"] == json(
+        {
+            {"string", "3.11.3"},
+            {"major", 3},
+            {"minor", 11},
+            {"patch", 3}
+        }));
+
+        CHECK(j.find("platform") != j.end());
+        CHECK(j.at("compiler").find("family") != j.at("compiler").end());
+        CHECK(j.at("compiler").find("version") != j.at("compiler").end());
+        CHECK(j.at("compiler").find("c++") != j.at("compiler").end());
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-modifiers.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-modifiers.cpp
new file mode 100644
index 00000000..f113fa17
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-modifiers.cpp
@@ -0,0 +1,952 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("modifiers")
+{
+    SECTION("clear()")
+    {
+        SECTION("boolean")
+        {
+            json j = true;
+            json const k = j;
+
+            j.clear();
+            CHECK(j == json(json::value_t::boolean));
+            CHECK(j == json(k.type()));
+        }
+
+        SECTION("string")
+        {
+            json j = "hello world";
+            json const k = j;
+
+            j.clear();
+            CHECK(j == json(json::value_t::string));
+            CHECK(j == json(k.type()));
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty array")
+            {
+                json j = json::array();
+                json const k = j;
+
+                j.clear();
+                CHECK(j.empty());
+                CHECK(j == json(json::value_t::array));
+                CHECK(j == json(k.type()));
+            }
+
+            SECTION("filled array")
+            {
+                json j = {1, 2, 3};
+                json const k = j;
+
+                j.clear();
+                CHECK(j.empty());
+                CHECK(j == json(json::value_t::array));
+                CHECK(j == json(k.type()));
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty object")
+            {
+                json j = json::object();
+                json const k = j;
+
+                j.clear();
+                CHECK(j.empty());
+                CHECK(j == json(json::value_t::object));
+                CHECK(j == json(k.type()));
+            }
+
+            SECTION("filled object")
+            {
+                json j = {{"one", 1}, {"two", 2}, {"three", 3}};
+                json const k = j;
+
+                j.clear();
+                CHECK(j.empty());
+                CHECK(j == json(json::value_t::object));
+                CHECK(j == json(k.type()));
+            }
+        }
+
+        SECTION("binary")
+        {
+            SECTION("empty binary")
+            {
+                json j = json::binary({});
+                json const k = j;
+
+                j.clear();
+                CHECK(!j.empty());
+                CHECK(j == json(json::value_t::binary));
+                CHECK(j == json(k.type()));
+            }
+
+            SECTION("filled binary")
+            {
+                json j = json::binary({1, 2, 3, 4, 5});
+                json const k = j;
+
+                j.clear();
+                CHECK(!j.empty());
+                CHECK(j == json(json::value_t::binary));
+                CHECK(j == json(k.type()));
+            }
+        }
+
+        SECTION("number (integer)")
+        {
+            json j = 23;
+            json const k = j;
+
+            j.clear();
+            CHECK(j == json(json::value_t::number_integer));
+            CHECK(j == json(k.type()));
+        }
+
+        SECTION("number (unsigned)")
+        {
+            json j = 23u;
+            json const k = j;
+
+            j.clear();
+            CHECK(j == json(json::value_t::number_integer));
+            CHECK(j == json(k.type()));
+        }
+
+        SECTION("number (float)")
+        {
+            json j = 23.42;
+            json const k = j;
+
+            j.clear();
+            CHECK(j == json(json::value_t::number_float));
+            CHECK(j == json(k.type()));
+        }
+
+        SECTION("null")
+        {
+            json j = nullptr;
+            json const k = j;
+
+            j.clear();
+            CHECK(j == json(json::value_t::null));
+            CHECK(j == json(k.type()));
+        }
+    }
+
+    SECTION("push_back()")
+    {
+        SECTION("to array")
+        {
+            SECTION("json&&")
+            {
+                SECTION("null")
+                {
+                    json j;
+                    j.push_back(1);
+                    j.push_back(2);
+                    CHECK(j.type() == json::value_t::array);
+                    CHECK(j == json({1, 2}));
+                }
+
+                SECTION("array")
+                {
+                    json j = {1, 2, 3};
+                    j.push_back("Hello");
+                    CHECK(j.type() == json::value_t::array);
+                    CHECK(j == json({1, 2, 3, "Hello"}));
+                }
+
+                SECTION("other type")
+                {
+                    json j = 1;
+                    CHECK_THROWS_WITH_AS(j.push_back("Hello"), "[json.exception.type_error.308] cannot use push_back() with number", json::type_error&);
+                }
+            }
+
+            SECTION("const json&")
+            {
+                SECTION("null")
+                {
+                    json j;
+                    json const k(1);
+                    j.push_back(k);
+                    j.push_back(k);
+                    CHECK(j.type() == json::value_t::array);
+                    CHECK(j == json({1, 1}));
+                }
+
+                SECTION("array")
+                {
+                    json j = {1, 2, 3};
+                    json const k("Hello");
+                    j.push_back(k);
+                    CHECK(j.type() == json::value_t::array);
+                    CHECK(j == json({1, 2, 3, "Hello"}));
+                }
+
+                SECTION("other type")
+                {
+                    json j = 1;
+                    json const k("Hello");
+                    CHECK_THROWS_WITH_AS(j.push_back(k), "[json.exception.type_error.308] cannot use push_back() with number", json::type_error&);
+                }
+            }
+        }
+
+        SECTION("to object")
+        {
+            SECTION("null")
+            {
+                json j;
+                j.push_back(json::object_t::value_type({"one", 1}));
+                j.push_back(json::object_t::value_type({"two", 2}));
+                CHECK(j.type() == json::value_t::object);
+                CHECK(j.size() == 2);
+                CHECK(j["one"] == json(1));
+                CHECK(j["two"] == json(2));
+            }
+
+            SECTION("object")
+            {
+                json j(json::value_t::object);
+                j.push_back(json::object_t::value_type({"one", 1}));
+                j.push_back(json::object_t::value_type({"two", 2}));
+                CHECK(j.size() == 2);
+                CHECK(j["one"] == json(1));
+                CHECK(j["two"] == json(2));
+            }
+
+            SECTION("other type")
+            {
+                json j = 1;
+                json const k("Hello");
+                CHECK_THROWS_WITH_AS(j.push_back(json::object_t::value_type({"one", 1})), "[json.exception.type_error.308] cannot use push_back() with number", json::type_error&);
+            }
+        }
+
+        SECTION("with initializer_list")
+        {
+            SECTION("null")
+            {
+                json j;
+                j.push_back({"foo", "bar"});
+                CHECK(j == json::array({{"foo", "bar"}}));
+
+                json k;
+                k.push_back({1, 2, 3});
+                CHECK(k == json::array({{1, 2, 3}}));
+            }
+
+            SECTION("array")
+            {
+                json j = {1, 2, 3};
+                j.push_back({"foo", "bar"});
+                CHECK(j == json({1, 2, 3, {"foo", "bar"}}));
+
+                json k = {1, 2, 3};
+                k.push_back({1, 2, 3});
+                CHECK(k == json({1, 2, 3, {1, 2, 3}}));
+            }
+
+            SECTION("object")
+            {
+                json j = {{"key1", 1}};
+                j.push_back({"key2", "bar"});
+                CHECK(j == json({{"key1", 1}, {"key2", "bar"}}));
+
+                // invalid values (no string/val pair)
+                CHECK_THROWS_WITH_AS(j.push_back({1}), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
+                CHECK_THROWS_WITH_AS(j.push_back({1, 2}), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
+                CHECK_THROWS_WITH_AS(j.push_back({1, 2, 3, 4}), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
+            }
+        }
+    }
+
+    SECTION("emplace_back()")
+    {
+        SECTION("to array")
+        {
+            SECTION("null")
+            {
+                json j;
+                auto& x1 = j.emplace_back(1);
+                CHECK(x1 == 1);
+                auto& x2 = j.emplace_back(2);
+                CHECK(x2 == 2);
+                CHECK(j.type() == json::value_t::array);
+                CHECK(j == json({1, 2}));
+            }
+
+            SECTION("array")
+            {
+                json j = {1, 2, 3};
+                auto& x = j.emplace_back("Hello");
+                CHECK(x == "Hello");
+                CHECK(j.type() == json::value_t::array);
+                CHECK(j == json({1, 2, 3, "Hello"}));
+            }
+
+            SECTION("multiple values")
+            {
+                json j;
+                auto& x = j.emplace_back(3, "foo");
+                CHECK(x == json({"foo", "foo", "foo"}));
+                CHECK(j.type() == json::value_t::array);
+                CHECK(j == json({{"foo", "foo", "foo"}}));
+            }
+        }
+
+        SECTION("other type")
+        {
+            json j = 1;
+            CHECK_THROWS_WITH_AS(j.emplace_back("Hello"), "[json.exception.type_error.311] cannot use emplace_back() with number", json::type_error&);
+        }
+    }
+
+    SECTION("emplace()")
+    {
+        SECTION("to object")
+        {
+            SECTION("null")
+            {
+                // start with a null value
+                json j;
+
+                // add a new key
+                auto res1 = j.emplace("foo", "bar");
+                CHECK(res1.second == true);
+                CHECK(*res1.first == "bar");
+
+                // the null value is changed to an object
+                CHECK(j.type() == json::value_t::object);
+
+                // add a new key
+                auto res2 = j.emplace("baz", "bam");
+                CHECK(res2.second == true);
+                CHECK(*res2.first == "bam");
+
+                // we try to insert at given key - no change
+                auto res3 = j.emplace("baz", "bad");
+                CHECK(res3.second == false);
+                CHECK(*res3.first == "bam");
+
+                // the final object
+                CHECK(j == json({{"baz", "bam"}, {"foo", "bar"}}));
+            }
+
+            SECTION("object")
+            {
+                // start with an object
+                json j = {{"foo", "bar"}};
+
+                // add a new key
+                auto res1 = j.emplace("baz", "bam");
+                CHECK(res1.second == true);
+                CHECK(*res1.first == "bam");
+
+                // add an existing key
+                auto res2 = j.emplace("foo", "bad");
+                CHECK(res2.second == false);
+                CHECK(*res2.first == "bar");
+
+                // check final object
+                CHECK(j == json({{"baz", "bam"}, {"foo", "bar"}}));
+            }
+        }
+
+        SECTION("other type")
+        {
+            json j = 1;
+            CHECK_THROWS_WITH_AS(j.emplace("foo", "bar"), "[json.exception.type_error.311] cannot use emplace() with number", json::type_error&);
+        }
+    }
+
+    SECTION("operator+=")
+    {
+        SECTION("to array")
+        {
+            SECTION("json&&")
+            {
+                SECTION("null")
+                {
+                    json j;
+                    j += 1;
+                    j += 2;
+                    CHECK(j.type() == json::value_t::array);
+                    CHECK(j == json({1, 2}));
+                }
+
+                SECTION("array")
+                {
+                    json j = {1, 2, 3};
+                    j += "Hello";
+                    CHECK(j.type() == json::value_t::array);
+                    CHECK(j == json({1, 2, 3, "Hello"}));
+                }
+
+                SECTION("other type")
+                {
+                    json j = 1;
+                    CHECK_THROWS_WITH_AS(j += "Hello", "[json.exception.type_error.308] cannot use push_back() with number", json::type_error&);
+                }
+            }
+
+            SECTION("const json&")
+            {
+                SECTION("null")
+                {
+                    json j;
+                    json const k(1);
+                    j += k;
+                    j += k;
+                    CHECK(j.type() == json::value_t::array);
+                    CHECK(j == json({1, 1}));
+                }
+
+                SECTION("array")
+                {
+                    json j = {1, 2, 3};
+                    json const k("Hello");
+                    j += k;
+                    CHECK(j.type() == json::value_t::array);
+                    CHECK(j == json({1, 2, 3, "Hello"}));
+                }
+
+                SECTION("other type")
+                {
+                    json j = 1;
+                    json const k("Hello");
+                    CHECK_THROWS_WITH_AS(j += k, "[json.exception.type_error.308] cannot use push_back() with number", json::type_error&);
+                }
+            }
+        }
+
+        SECTION("to object")
+        {
+            SECTION("null")
+            {
+                json j;
+                j += json::object_t::value_type({"one", 1});
+                j += json::object_t::value_type({"two", 2});
+                CHECK(j.type() == json::value_t::object);
+                CHECK(j.size() == 2);
+                CHECK(j["one"] == json(1));
+                CHECK(j["two"] == json(2));
+            }
+
+            SECTION("object")
+            {
+                json j(json::value_t::object);
+                j += json::object_t::value_type({"one", 1});
+                j += json::object_t::value_type({"two", 2});
+                CHECK(j.size() == 2);
+                CHECK(j["one"] == json(1));
+                CHECK(j["two"] == json(2));
+            }
+
+            SECTION("other type")
+            {
+                json j = 1;
+                json const k("Hello");
+                CHECK_THROWS_WITH_AS(j += json::object_t::value_type({"one", 1}), "[json.exception.type_error.308] cannot use push_back() with number", json::type_error&);
+            }
+        }
+
+        SECTION("with initializer_list")
+        {
+            SECTION("null")
+            {
+                json j;
+                j += {"foo", "bar"};
+                CHECK(j == json::array({{"foo", "bar"}}));
+
+                json k;
+                k += {1, 2, 3};
+                CHECK(k == json::array({{1, 2, 3}}));
+            }
+
+            SECTION("array")
+            {
+                json j = {1, 2, 3};
+                j += {"foo", "bar"};
+                CHECK(j == json({1, 2, 3, {"foo", "bar"}}));
+
+                json k = {1, 2, 3};
+                k += {1, 2, 3};
+                CHECK(k == json({1, 2, 3, {1, 2, 3}}));
+            }
+
+            SECTION("object")
+            {
+                json j = {{"key1", 1}};
+                j += {"key2", "bar"};
+                CHECK(j == json({{"key1", 1}, {"key2", "bar"}}));
+
+                json k = {{"key1", 1}};
+                CHECK_THROWS_WITH_AS((k += {1, 2, 3, 4}), "[json.exception.type_error.308] cannot use push_back() with object", json::type_error&);
+            }
+        }
+    }
+
+    SECTION("insert()")
+    {
+        json j_array = {1, 2, 3, 4};
+        json j_value = 5;
+
+        SECTION("value at position")
+        {
+            SECTION("insert before begin()")
+            {
+                auto it = j_array.insert(j_array.begin(), j_value);
+                CHECK(j_array.size() == 5);
+                CHECK(*it == j_value);
+                CHECK(j_array.begin() == it);
+                CHECK(j_array == json({5, 1, 2, 3, 4}));
+            }
+
+            SECTION("insert in the middle")
+            {
+                auto it = j_array.insert(j_array.begin() + 2, j_value);
+                CHECK(j_array.size() == 5);
+                CHECK(*it == j_value);
+                CHECK((it - j_array.begin()) == 2);
+                CHECK(j_array == json({1, 2, 5, 3, 4}));
+            }
+
+            SECTION("insert before end()")
+            {
+                auto it = j_array.insert(j_array.end(), j_value);
+                CHECK(j_array.size() == 5);
+                CHECK(*it == j_value);
+                CHECK((j_array.end() - it) == 1);
+                CHECK(j_array == json({1, 2, 3, 4, 5}));
+            }
+        }
+
+        SECTION("rvalue at position")
+        {
+            SECTION("insert before begin()")
+            {
+                auto it = j_array.insert(j_array.begin(), 5);
+                CHECK(j_array.size() == 5);
+                CHECK(*it == j_value);
+                CHECK(j_array.begin() == it);
+                CHECK(j_array == json({5, 1, 2, 3, 4}));
+            }
+
+            SECTION("insert in the middle")
+            {
+                auto it = j_array.insert(j_array.begin() + 2, 5);
+                CHECK(j_array.size() == 5);
+                CHECK(*it == j_value);
+                CHECK((it - j_array.begin()) == 2);
+                CHECK(j_array == json({1, 2, 5, 3, 4}));
+            }
+
+            SECTION("insert before end()")
+            {
+                auto it = j_array.insert(j_array.end(), 5);
+                CHECK(j_array.size() == 5);
+                CHECK(*it == j_value);
+                CHECK((j_array.end() - it) == 1);
+                CHECK(j_array == json({1, 2, 3, 4, 5}));
+            }
+        }
+
+        SECTION("copies at position")
+        {
+            SECTION("insert before begin()")
+            {
+                auto it = j_array.insert(j_array.begin(), 3, 5);
+                CHECK(j_array.size() == 7);
+                CHECK(*it == j_value);
+                CHECK(j_array.begin() == it);
+                CHECK(j_array == json({5, 5, 5, 1, 2, 3, 4}));
+            }
+
+            SECTION("insert in the middle")
+            {
+                auto it = j_array.insert(j_array.begin() + 2, 3, 5);
+                CHECK(j_array.size() == 7);
+                CHECK(*it == j_value);
+                CHECK((it - j_array.begin()) == 2);
+                CHECK(j_array == json({1, 2, 5, 5, 5, 3, 4}));
+            }
+
+            SECTION("insert before end()")
+            {
+                auto it = j_array.insert(j_array.end(), 3, 5);
+                CHECK(j_array.size() == 7);
+                CHECK(*it == j_value);
+                CHECK((j_array.end() - it) == 3);
+                CHECK(j_array == json({1, 2, 3, 4, 5, 5, 5}));
+            }
+
+            SECTION("insert nothing (count = 0)")
+            {
+                auto it = j_array.insert(j_array.end(), 0, 5);
+                CHECK(j_array.size() == 4);
+                // the returned iterator points to the first inserted element;
+                // there were 4 elements, so it should point to the 5th
+                CHECK(it == j_array.begin() + 4);
+                CHECK(j_array == json({1, 2, 3, 4}));
+            }
+        }
+
+        SECTION("range for array")
+        {
+            json j_other_array = {"first", "second"};
+
+            SECTION("proper usage")
+            {
+                auto it = j_array.insert(j_array.end(), j_other_array.begin(), j_other_array.end());
+                CHECK(j_array.size() == 6);
+                CHECK(*it == *j_other_array.begin());
+                CHECK((j_array.end() - it) == 2);
+                CHECK(j_array == json({1, 2, 3, 4, "first", "second"}));
+            }
+
+            SECTION("empty range")
+            {
+                auto it = j_array.insert(j_array.end(), j_other_array.begin(), j_other_array.begin());
+                CHECK(j_array.size() == 4);
+                CHECK(it == j_array.end());
+                CHECK(j_array == json({1, 2, 3, 4}));
+            }
+
+            SECTION("invalid iterators")
+            {
+                json j_other_array2 = {"first", "second"};
+
+                CHECK_THROWS_WITH_AS(j_array.insert(j_array.end(), j_array.begin(), j_array.end()), "[json.exception.invalid_iterator.211] passed iterators may not belong to container",
+                                     json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(j_array.insert(j_array.end(), j_other_array.begin(), j_other_array2.end()), "[json.exception.invalid_iterator.210] iterators do not fit",
+                                     json::invalid_iterator&);
+            }
+        }
+
+        SECTION("range for object")
+        {
+            json j_object1 = {{"one", "eins"}, {"two", "zwei"}};
+            json j_object2 = {{"eleven", "elf"}, {"seventeen", "siebzehn"}};
+
+            SECTION("proper usage")
+            {
+                j_object1.insert(j_object2.begin(), j_object2.end());
+                CHECK(j_object1.size() == 4);
+            }
+
+            SECTION("empty range")
+            {
+                j_object1.insert(j_object2.begin(), j_object2.begin());
+                CHECK(j_object1.size() == 2);
+            }
+
+            SECTION("invalid iterators")
+            {
+                json const j_other_array2 = {"first", "second"};
+
+                CHECK_THROWS_WITH_AS(j_array.insert(j_object2.begin(), j_object2.end()), "[json.exception.type_error.309] cannot use insert() with array", json::type_error&);
+                CHECK_THROWS_WITH_AS(j_object1.insert(j_object1.begin(), j_object2.end()), "[json.exception.invalid_iterator.210] iterators do not fit", json::invalid_iterator&);
+                CHECK_THROWS_WITH_AS(j_object1.insert(j_array.begin(), j_array.end()), "[json.exception.invalid_iterator.202] iterators first and last must point to objects", json::invalid_iterator&);
+            }
+        }
+
+        SECTION("initializer list at position")
+        {
+            SECTION("insert before begin()")
+            {
+                auto it = j_array.insert(j_array.begin(), {7, 8, 9});
+                CHECK(j_array.size() == 7);
+                CHECK(*it == json(7));
+                CHECK(j_array.begin() == it);
+                CHECK(j_array == json({7, 8, 9, 1, 2, 3, 4}));
+            }
+
+            SECTION("insert in the middle")
+            {
+                auto it = j_array.insert(j_array.begin() + 2, {7, 8, 9});
+                CHECK(j_array.size() == 7);
+                CHECK(*it == json(7));
+                CHECK((it - j_array.begin()) == 2);
+                CHECK(j_array == json({1, 2, 7, 8, 9, 3, 4}));
+            }
+
+            SECTION("insert before end()")
+            {
+                auto it = j_array.insert(j_array.end(), {7, 8, 9});
+                CHECK(j_array.size() == 7);
+                CHECK(*it == json(7));
+                CHECK((j_array.end() - it) == 3);
+                CHECK(j_array == json({1, 2, 3, 4, 7, 8, 9}));
+            }
+        }
+
+        SECTION("invalid iterator")
+        {
+            // pass iterator to a different array
+            json j_another_array = {1, 2};
+            json j_yet_another_array = {"first", "second"};
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), 10), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), j_value), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), 10, 11), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), j_yet_another_array.begin(), j_yet_another_array.end()), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+            CHECK_THROWS_WITH_AS(j_array.insert(j_another_array.end(), {1, 2, 3, 4}), "[json.exception.invalid_iterator.202] iterator does not fit current value", json::invalid_iterator&);
+        }
+
+        SECTION("non-array type")
+        {
+            // call insert on a non-array type
+            json j_nonarray = 3;
+            json j_yet_another_array = {"first", "second"};
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), 10), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), j_value), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), 10, 11), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), j_yet_another_array.begin(), j_yet_another_array.end()), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+            CHECK_THROWS_WITH_AS(j_nonarray.insert(j_nonarray.end(), {1, 2, 3, 4}), "[json.exception.type_error.309] cannot use insert() with number", json::type_error&);
+        }
+    }
+
+    SECTION("update()")
+    {
+        SECTION("non-recursive (default)")
+        {
+            json j_object1 = {{"one", "eins"}, {"two", "zwei"}};
+            json j_object2 = {{"three", "drei"}, {"two", "zwo"}};
+            json j_array = {1, 2, 3, 4};
+
+            SECTION("const reference")
+            {
+                SECTION("proper usage")
+                {
+                    j_object1.update(j_object2);
+                    CHECK(j_object1 == json({{"one", "eins"}, {"two", "zwo"}, {"three", "drei"}}));
+
+                    json j_null;
+                    j_null.update(j_object2);
+                    CHECK(j_null == j_object2);
+                }
+
+                SECTION("wrong types")
+                {
+                    CHECK_THROWS_WITH_AS(j_array.update(j_object1), "[json.exception.type_error.312] cannot use update() with array", json::type_error&);
+
+                    CHECK_THROWS_WITH_AS(j_object1.update(j_array), "[json.exception.type_error.312] cannot use update() with array", json::type_error&);
+                }
+            }
+
+            SECTION("iterator range")
+            {
+                SECTION("proper usage")
+                {
+                    j_object1.update(j_object2.begin(), j_object2.end());
+                    CHECK(j_object1 == json({{"one", "eins"}, {"two", "zwo"}, {"three", "drei"}}));
+
+                    json j_null;
+                    j_null.update(j_object2.begin(), j_object2.end());
+                    CHECK(j_null == j_object2);
+                }
+
+                SECTION("empty range")
+                {
+                    j_object1.update(j_object2.begin(), j_object2.begin());
+                    CHECK(j_object1 == json({{"one", "eins"}, {"two", "zwei"}}));
+                }
+
+                SECTION("invalid iterators")
+                {
+                    json const j_other_array2 = {"first", "second"};
+
+                    CHECK_THROWS_WITH_AS(j_array.update(j_object2.begin(), j_object2.end()), "[json.exception.type_error.312] cannot use update() with array", json::type_error&);
+                    CHECK_THROWS_WITH_AS(j_object1.update(j_object1.begin(), j_object2.end()), "[json.exception.invalid_iterator.210] iterators do not fit", json::invalid_iterator&);
+                    CHECK_THROWS_WITH_AS(j_object1.update(j_array.begin(), j_array.end()), "[json.exception.type_error.312] cannot use update() with array", json::type_error&);
+                }
+            }
+        }
+
+        SECTION("recursive")
+        {
+            SECTION("const reference")
+            {
+                SECTION("extend object")
+                {
+                    json j1 = {{"string", "s"}, {"numbers", {{"one", 1}}}};
+                    json const j2 = {{"string", "t"}, {"numbers", {{"two", 2}}}};
+                    j1.update(j2, true);
+                    CHECK(j1 == json({{"string", "t"}, {"numbers", {{"one", 1}, {"two", 2}}}}));
+                }
+
+                SECTION("replace object")
+                {
+                    json j1 = {{"string", "s"}, {"numbers", {{"one", 1}}}};
+                    json const j2 = {{"string", "t"}, {"numbers", 1}};
+                    j1.update(j2, true);
+                    CHECK(j1 == json({{"string", "t"}, {"numbers", 1}}));
+                }
+            }
+        }
+    }
+
+    SECTION("swap()")
+    {
+        SECTION("json")
+        {
+            SECTION("member swap")
+            {
+                json j("hello world");
+                json k(42.23);
+
+                j.swap(k);
+
+                CHECK(j == json(42.23));
+                CHECK(k == json("hello world"));
+            }
+
+            SECTION("nonmember swap")
+            {
+                json j("hello world");
+                json k(42.23);
+
+                using std::swap;
+                swap(j, k);
+
+                CHECK(j == json(42.23));
+                CHECK(k == json("hello world"));
+            }
+        }
+
+        SECTION("array_t")
+        {
+            SECTION("array_t type")
+            {
+                json j = {1, 2, 3, 4};
+                json::array_t a = {"foo", "bar", "baz"};
+
+                j.swap(a);
+
+                CHECK(j == json({"foo", "bar", "baz"}));
+
+                j.swap(a);
+
+                CHECK(j == json({1, 2, 3, 4}));
+            }
+
+            SECTION("non-array_t type")
+            {
+                json j = 17;
+                json::array_t a = {"foo", "bar", "baz"};
+
+                CHECK_THROWS_WITH_AS(j.swap(a), "[json.exception.type_error.310] cannot use swap(array_t&) with number", json::type_error&);
+            }
+        }
+
+        SECTION("object_t")
+        {
+            SECTION("object_t type")
+            {
+                json j = {{"one", 1}, {"two", 2}};
+                json::object_t o = {{"cow", "Kuh"}, {"chicken", "Huhn"}};
+
+                j.swap(o);
+
+                CHECK(j == json({{"cow", "Kuh"}, {"chicken", "Huhn"}}));
+
+                j.swap(o);
+
+                CHECK(j == json({{"one", 1}, {"two", 2}}));
+            }
+
+            SECTION("non-object_t type")
+            {
+                json j = 17;
+                json::object_t o = {{"cow", "Kuh"}, {"chicken", "Huhn"}};
+
+                CHECK_THROWS_WITH_AS(j.swap(o), "[json.exception.type_error.310] cannot use swap(object_t&) with number", json::type_error&);
+            }
+        }
+
+        SECTION("string_t")
+        {
+            SECTION("string_t type")
+            {
+                json j = "Hello world";
+                json::string_t s = "Hallo Welt";
+
+                j.swap(s);
+
+                CHECK(j == json("Hallo Welt"));
+
+                j.swap(s);
+
+                CHECK(j == json("Hello world"));
+            }
+
+            SECTION("non-string_t type")
+            {
+                json j = 17;
+                json::string_t s = "Hallo Welt";
+
+                CHECK_THROWS_WITH_AS(j.swap(s), "[json.exception.type_error.310] cannot use swap(string_t&) with number", json::type_error&);
+            }
+        }
+
+        SECTION("binary_t")
+        {
+            SECTION("binary_t type")
+            {
+                json j = json::binary({1, 2, 3, 4});
+                json::binary_t s = {{5, 6, 7, 8}};
+
+                j.swap(s);
+
+                CHECK(j == json::binary({5, 6, 7, 8}));
+
+                j.swap(s);
+
+                CHECK(j == json::binary({1, 2, 3, 4}));
+            }
+
+            SECTION("binary_t::container_type type")
+            {
+                json j = json::binary({1, 2, 3, 4});
+                std::vector<std::uint8_t> s = {{5, 6, 7, 8}};
+
+                j.swap(s);
+
+                CHECK(j == json::binary({5, 6, 7, 8}));
+
+                j.swap(s);
+
+                CHECK(j == json::binary({1, 2, 3, 4}));
+            }
+
+            SECTION("non-binary_t type")
+            {
+                json j = 17;
+                json::binary_t s1 = {{1, 2, 3, 4}};
+                std::vector<std::uint8_t> s2 = {{5, 6, 7, 8}};
+
+                CHECK_THROWS_WITH_AS(j.swap(s1), "[json.exception.type_error.310] cannot use swap(binary_t&) with number", json::type_error);
+                CHECK_THROWS_WITH_AS(j.swap(s2), "[json.exception.type_error.310] cannot use swap(binary_t::container_type&) with number", json::type_error);
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-msgpack.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-msgpack.cpp
new file mode 100644
index 00000000..e5431072
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-msgpack.cpp
@@ -0,0 +1,1882 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <fstream>
+#include <sstream>
+#include <iomanip>
+#include <limits>
+#include <set>
+#include "make_test_data_available.hpp"
+#include "test_utils.hpp"
+
+namespace
+{
+class SaxCountdown
+{
+  public:
+    explicit SaxCountdown(const int count) : events_left(count)
+    {}
+
+    bool null()
+    {
+        return events_left-- > 0;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_integer(json::number_integer_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_unsigned(json::number_unsigned_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_float(json::number_float_t /*unused*/, const std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool string(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool binary(std::vector<std::uint8_t>& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_object(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool key(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_object()
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_array(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_array()
+    {
+        return events_left-- > 0;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const json::exception& /*unused*/) // NOLINT(readability-convert-member-functions-to-static)
+    {
+        return false;
+    }
+
+  private:
+    int events_left = 0;
+};
+} // namespace
+
+TEST_CASE("MessagePack")
+{
+    SECTION("individual values")
+    {
+        SECTION("discarded")
+        {
+            // discarded values are not serialized
+            json const j = json::value_t::discarded;
+            const auto result = json::to_msgpack(j);
+            CHECK(result.empty());
+        }
+
+        SECTION("null")
+        {
+            json const j = nullptr;
+            std::vector<uint8_t> const expected = {0xc0};
+            const auto result = json::to_msgpack(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_msgpack(result) == j);
+            CHECK(json::from_msgpack(result, true, false) == j);
+        }
+
+        SECTION("boolean")
+        {
+            SECTION("true")
+            {
+                json const j = true;
+                std::vector<uint8_t> const expected = {0xc3};
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("false")
+            {
+                json const j = false;
+                std::vector<uint8_t> const expected = {0xc2};
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+        }
+
+        SECTION("number")
+        {
+            SECTION("signed")
+            {
+                SECTION("-32..-1 (negative fixnum)")
+                {
+                    for (auto i = -32; i <= -1; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>(i)
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 1);
+
+                        // check individual bytes
+                        CHECK(static_cast<int8_t>(result[0]) == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("0..127 (positive fixnum)")
+                {
+                    for (size_t i = 0; i <= 127; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected{static_cast<uint8_t>(i)};
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 1);
+
+                        // check individual bytes
+                        CHECK(result[0] == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("128..255 (int 8)")
+                {
+                    for (size_t i = 128; i <= 255; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xcc,
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xcc);
+                        auto const restored = static_cast<uint8_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("256..65535 (int 16)")
+                {
+                    for (size_t i = 256; i <= 65535; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xcd,
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xcd);
+                        auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("65536..4294967295 (int 32)")
+                {
+                    for (uint32_t i :
+                            {
+                                65536u, 77777u, 1048576u, 4294967295u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xce,
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xce);
+                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) +
+                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) +
+                                                  static_cast<uint32_t>(result[4]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("4294967296..9223372036854775807 (int 64)")
+                {
+                    for (uint64_t i :
+                            {
+                                4294967296LU, 9223372036854775807LU
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xcf,
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xcf);
+                        uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) +
+                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) +
+                                                  (static_cast<uint64_t>(result[6]) << 020) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) +
+                                                  static_cast<uint64_t>(result[8]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-128..-33 (int 8)")
+                {
+                    for (auto i = -128; i <= -33; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xd0,
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xd0);
+                        CHECK(static_cast<int8_t>(result[1]) == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-9263 (int 16)")
+                {
+                    json const j = -9263;
+                    std::vector<uint8_t> const expected = {0xd1, 0xdb, 0xd1};
+
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+
+                    auto const restored = static_cast<int16_t>((result[1] << 8) + result[2]);
+                    CHECK(restored == -9263);
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+
+                SECTION("-32768..-129 (int 16)")
+                {
+                    for (int16_t i = -32768; i <= static_cast<std::int16_t>(-129); ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xd1,
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xd1);
+                        auto const restored = static_cast<int16_t>((result[1] << 8) + result[2]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-32769..-2147483648")
+                {
+                    std::vector<int32_t> const numbers
+                    {
+                        -32769,
+                            -65536,
+                            -77777,
+                            -1048576,
+                            -2147483648LL,
+                        };
+                    for (auto i : numbers)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xd2,
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xd2);
+                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) +
+                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) +
+                                                  static_cast<uint32_t>(result[4]);
+                        CHECK(static_cast<std::int32_t>(restored) == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-9223372036854775808..-2147483649 (int 64)")
+                {
+                    std::vector<int64_t> const numbers
+                    {
+                        (std::numeric_limits<int64_t>::min)(),
+                        -2147483649LL,
+                    };
+                    for (auto i : numbers)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xd3,
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xd3);
+                        int64_t const restored = (static_cast<int64_t>(result[1]) << 070) +
+                                                 (static_cast<int64_t>(result[2]) << 060) +
+                                                 (static_cast<int64_t>(result[3]) << 050) +
+                                                 (static_cast<int64_t>(result[4]) << 040) +
+                                                 (static_cast<int64_t>(result[5]) << 030) +
+                                                 (static_cast<int64_t>(result[6]) << 020) +
+                                                 (static_cast<int64_t>(result[7]) << 010) +
+                                                 static_cast<int64_t>(result[8]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+            }
+
+            SECTION("unsigned")
+            {
+                SECTION("0..127 (positive fixnum)")
+                {
+                    for (size_t i = 0; i <= 127; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected{static_cast<uint8_t>(i)};
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 1);
+
+                        // check individual bytes
+                        CHECK(result[0] == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("128..255 (uint 8)")
+                {
+                    for (size_t i = 128; i <= 255; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xcc,
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xcc);
+                        auto const restored = static_cast<uint8_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("256..65535 (uint 16)")
+                {
+                    for (size_t i = 256; i <= 65535; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xcd,
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xcd);
+                        auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("65536..4294967295 (uint 32)")
+                {
+                    for (const uint32_t i :
+                            {
+                                65536u, 77777u, 1048576u, 4294967295u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xce,
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xce);
+                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) +
+                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) +
+                                                  static_cast<uint32_t>(result[4]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+
+                SECTION("4294967296..18446744073709551615 (uint 64)")
+                {
+                    for (const uint64_t i :
+                            {
+                                4294967296LU, 18446744073709551615LU
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            0xcf,
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_msgpack(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 0xcf);
+                        uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) +
+                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) +
+                                                  (static_cast<uint64_t>(result[6]) << 020) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) +
+                                                  static_cast<uint64_t>(result[8]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_msgpack(result) == j);
+                        CHECK(json::from_msgpack(result, true, false) == j);
+                    }
+                }
+            }
+
+            SECTION("float")
+            {
+                SECTION("3.1415925")
+                {
+                    double const v = 3.1415925;
+                    json const j = v;
+                    std::vector<uint8_t> const expected =
+                    {
+                        0xcb, 0x40, 0x09, 0x21, 0xfb, 0x3f, 0xa6, 0xde, 0xfc
+                    };
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result) == v);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+
+                SECTION("1.0")
+                {
+                    double const v = 1.0;
+                    json const j = v;
+                    std::vector<uint8_t> const expected =
+                    {
+                        0xca, 0x3f, 0x80, 0x00, 0x00
+                    };
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result) == v);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+
+                SECTION("128.128")
+                {
+                    double const v = 128.1280059814453125;
+                    json const j = v;
+                    std::vector<uint8_t> const expected =
+                    {
+                        0xca, 0x43, 0x00, 0x20, 0xc5
+                    };
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result) == v);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+        }
+
+        SECTION("string")
+        {
+            SECTION("N = 0..31")
+            {
+                // explicitly enumerate the first byte for all 32 strings
+                const std::vector<uint8_t> first_bytes =
+                {
+                    0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8,
+                    0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1,
+                    0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba,
+                    0xbb, 0xbc, 0xbd, 0xbe, 0xbf
+                };
+
+                for (size_t N = 0; N < first_bytes.size(); ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back(first_bytes[N]);
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // check first byte
+                    CHECK((first_bytes[N] & 0x1f) == N);
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 1);
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 32..255")
+            {
+                for (size_t N = 32; N <= 255; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back(0xd9);
+                    expected.push_back(static_cast<uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 2);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 256..65535")
+            {
+                for (size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 65535u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), 0xda);
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 3);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 65536..4294967295")
+            {
+                for (size_t N :
+                        {
+                            65536u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 16) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 24) & 0xff));
+                    expected.insert(expected.begin(), 0xdb);
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 5);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty")
+            {
+                json const j = json::array();
+                std::vector<uint8_t> const expected = {0x90};
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("[null]")
+            {
+                json const j = {nullptr};
+                std::vector<uint8_t> const expected = {0x91, 0xc0};
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("[1,2,3,4,5]")
+            {
+                json const j = json::parse("[1,2,3,4,5]");
+                std::vector<uint8_t> const expected = {0x95, 0x01, 0x02, 0x03, 0x04, 0x05};
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("[[[[]]]]")
+            {
+                json const j = json::parse("[[[[]]]]");
+                std::vector<uint8_t> const expected = {0x91, 0x91, 0x91, 0x90};
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("array 16")
+            {
+                json j(16, nullptr);
+                std::vector<uint8_t> expected(j.size() + 3, 0xc0); // all null
+                expected[0] = 0xdc; // array 16
+                expected[1] = 0x00; // size (0x0010), byte 0
+                expected[2] = 0x10; // size (0x0010), byte 1
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("array 32")
+            {
+                json j(65536, nullptr);
+                std::vector<uint8_t> expected(j.size() + 5, 0xc0); // all null
+                expected[0] = 0xdd; // array 32
+                expected[1] = 0x00; // size (0x00100000), byte 0
+                expected[2] = 0x01; // size (0x00100000), byte 1
+                expected[3] = 0x00; // size (0x00100000), byte 2
+                expected[4] = 0x00; // size (0x00100000), byte 3
+                const auto result = json::to_msgpack(j);
+                //CHECK(result == expected);
+
+                CHECK(result.size() == expected.size());
+                for (size_t i = 0; i < expected.size(); ++i)
+                {
+                    CAPTURE(i)
+                    CHECK(result[i] == expected[i]);
+                }
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty")
+            {
+                json const j = json::object();
+                std::vector<uint8_t> const expected = {0x80};
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("{\"\":null}")
+            {
+                json const j = {{"", nullptr}};
+                std::vector<uint8_t> const expected = {0x81, 0xa0, 0xc0};
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("{\"a\": {\"b\": {\"c\": {}}}}")
+            {
+                json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
+                std::vector<uint8_t> const expected =
+                {
+                    0x81, 0xa1, 0x61, 0x81, 0xa1, 0x62, 0x81, 0xa1, 0x63, 0x80
+                };
+                const auto result = json::to_msgpack(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("map 16")
+            {
+                json const j = R"({"00": null, "01": null, "02": null, "03": null,
+                             "04": null, "05": null, "06": null, "07": null,
+                             "08": null, "09": null, "10": null, "11": null,
+                             "12": null, "13": null, "14": null, "15": null})"_json;
+
+                const auto result = json::to_msgpack(j);
+
+                // Checking against an expected vector byte by byte is
+                // difficult, because no assumption on the order of key/value
+                // pairs are made. We therefore only check the prefix (type and
+                // size) and the overall size. The rest is then handled in the
+                // roundtrip check.
+                CHECK(result.size() == 67); // 1 type, 2 size, 16*4 content
+                CHECK(result[0] == 0xde); // map 16
+                CHECK(result[1] == 0x00); // byte 0 of size (0x0010)
+                CHECK(result[2] == 0x10); // byte 1 of size (0x0010)
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+
+            SECTION("map 32")
+            {
+                json j;
+                for (auto i = 0; i < 65536; ++i)
+                {
+                    // format i to a fixed width of 5
+                    // each entry will need 7 bytes: 6 for fixstr, 1 for null
+                    std::stringstream ss;
+                    ss << std::setw(5) << std::setfill('0') << i;
+                    j.emplace(ss.str(), nullptr);
+                }
+
+                const auto result = json::to_msgpack(j);
+
+                // Checking against an expected vector byte by byte is
+                // difficult, because no assumption on the order of key/value
+                // pairs are made. We therefore only check the prefix (type and
+                // size) and the overall size. The rest is then handled in the
+                // roundtrip check.
+                CHECK(result.size() == 458757); // 1 type, 4 size, 65536*7 content
+                CHECK(result[0] == 0xdf); // map 32
+                CHECK(result[1] == 0x00); // byte 0 of size (0x00010000)
+                CHECK(result[2] == 0x01); // byte 1 of size (0x00010000)
+                CHECK(result[3] == 0x00); // byte 2 of size (0x00010000)
+                CHECK(result[4] == 0x00); // byte 3 of size (0x00010000)
+
+                // roundtrip
+                CHECK(json::from_msgpack(result) == j);
+                CHECK(json::from_msgpack(result, true, false) == j);
+            }
+        }
+
+        SECTION("extension")
+        {
+            SECTION("N = 0..255")
+            {
+                for (size_t N = 0; N <= 0xFF; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<uint8_t>(N, 'x');
+                    json j = json::binary(s);
+                    std::uint8_t const subtype = 42;
+                    j.get_binary().set_subtype(subtype);
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    switch (N)
+                    {
+                        case 1:
+                            expected.push_back(static_cast<std::uint8_t>(0xD4));
+                            break;
+                        case 2:
+                            expected.push_back(static_cast<std::uint8_t>(0xD5));
+                            break;
+                        case 4:
+                            expected.push_back(static_cast<std::uint8_t>(0xD6));
+                            break;
+                        case 8:
+                            expected.push_back(static_cast<std::uint8_t>(0xD7));
+                            break;
+                        case 16:
+                            expected.push_back(static_cast<std::uint8_t>(0xD8));
+                            break;
+                        default:
+                            expected.push_back(static_cast<std::uint8_t>(0xC7));
+                            expected.push_back(static_cast<std::uint8_t>(N));
+                            break;
+                    }
+                    expected.push_back(subtype);
+
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(0x78);
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    switch (N)
+                    {
+                        case 1:
+                        case 2:
+                        case 4:
+                        case 8:
+                        case 16:
+                            CHECK(result.size() == N + 2);
+                            break;
+                        default:
+                            CHECK(result.size() == N + 3);
+                            break;
+                    }
+
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 256..65535")
+            {
+                for (std::size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 65535u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::vector<uint8_t>(N, 'x');
+                    json j = json::binary(s);
+                    std::uint8_t const subtype = 42;
+                    j.get_binary().set_subtype(subtype);
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), subtype);
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), 0xC8);
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 4);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 65536..4294967295")
+            {
+                for (std::size_t N :
+                        {
+                            65536u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::vector<uint8_t>(N, 'x');
+                    json j = json::binary(s);
+                    std::uint8_t const subtype = 42;
+                    j.get_binary().set_subtype(subtype);
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), subtype);
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 16) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 24) & 0xff));
+                    expected.insert(expected.begin(), 0xC9);
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 6);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+        }
+
+        SECTION("binary")
+        {
+            SECTION("N = 0..255")
+            {
+                for (std::size_t N = 0; N <= 0xFF; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<std::uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>(0xC4));
+                    expected.push_back(static_cast<std::uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(0x78);
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 2);
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 256..65535")
+            {
+                for (std::size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 65535u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<std::uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<std::uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<std::uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), 0xC5);
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 3);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 65536..4294967295")
+            {
+                for (std::size_t N :
+                        {
+                            65536u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<std::uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<std::uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<std::uint8_t>((N >> 16) & 0xff));
+                    expected.insert(expected.begin(), static_cast<std::uint8_t>((N >> 24) & 0xff));
+                    expected.insert(expected.begin(), 0xC6);
+
+                    // compare result + size
+                    const auto result = json::to_msgpack(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 5);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_msgpack(result) == j);
+                    CHECK(json::from_msgpack(result, true, false) == j);
+                }
+            }
+        }
+    }
+
+    SECTION("from float32")
+    {
+        auto given = std::vector<uint8_t>({0xca, 0x41, 0xc8, 0x00, 0x01});
+        json const j = json::from_msgpack(given);
+        CHECK(j.get<double>() == Approx(25.0000019073486));
+    }
+
+    SECTION("errors")
+    {
+        SECTION("empty byte vector")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>()), "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_msgpack(std::vector<uint8_t>(), true, false).is_discarded());
+        }
+
+        SECTION("too short byte vector")
+        {
+            json _;
+
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x87})),
+                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcc})),
+                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcd})),
+                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcd, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce})),
+                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf})),
+                                 "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})),
+                                 "[json.exception.parse_error.110] parse error at byte 9: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xa5, 0x68, 0x65})),
+                                 "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x92, 0x01})),
+                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xa1, 0x61})),
+                                 "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xc4, 0x02})),
+                                 "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing MessagePack binary: unexpected end of input", json::parse_error&);
+
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0x87}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcc}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcd}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcd, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xce}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xce, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xa5, 0x68, 0x65}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0x92, 0x01}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0x81, 0xA1, 0x61}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xc4, 0x02}), true, false).is_discarded());
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0xc4}), true, false).is_discarded());
+        }
+
+        SECTION("unexpected end inside int with stream")
+        {
+            json _;
+            const std::string data = {static_cast<char>(0xd2u), static_cast<char>(0x12u), static_cast<char>(0x34u), static_cast<char>(0x56u)};
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::istringstream(data, std::ios::binary)),
+                                 "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+        }
+        SECTION("misuse wchar for binary")
+        {
+            json _;
+            // creates 0xd2 after UTF-8 decoding, triggers get_elements in wide_string_input_adapter for code coverage
+            const std::u32string data = {static_cast<char32_t>(0x0280)};
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(data),
+                                 "[json.exception.parse_error.112] parse error at byte 1: wide string type cannot be interpreted as binary data", json::parse_error&);
+        }
+
+        SECTION("unsupported bytes")
+        {
+            SECTION("concrete examples")
+            {
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0xc1})), "[json.exception.parse_error.112] parse error at byte 1: syntax error while parsing MessagePack value: invalid byte: 0xC1", json::parse_error&);
+            }
+
+            SECTION("all unsupported bytes")
+            {
+                for (auto byte :
+                        {
+                            // never used
+                            0xc1
+                        })
+                {
+                    json _;
+                    CHECK_THROWS_AS(_ = json::from_msgpack(std::vector<uint8_t>({static_cast<uint8_t>(byte)})), json::parse_error&);
+                    CHECK(json::from_msgpack(std::vector<uint8_t>({static_cast<uint8_t>(byte)}), true, false).is_discarded());
+                }
+            }
+        }
+
+        SECTION("invalid string in map")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack string: expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0xFF", json::parse_error&);
+            CHECK(json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01}), true, false).is_discarded());
+        }
+
+        SECTION("strict mode")
+        {
+            std::vector<uint8_t> const vec = {0xc0, 0xc0};
+            SECTION("non-strict mode")
+            {
+                const auto result = json::from_msgpack(vec, false);
+                CHECK(result == json());
+            }
+
+            SECTION("strict mode")
+            {
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_msgpack(vec), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack value: expected end of input; last byte: 0xC0", json::parse_error&);
+                CHECK(json::from_msgpack(vec, true, false).is_discarded());
+            }
+        }
+    }
+
+    SECTION("SAX aborts")
+    {
+        SECTION("start_array(len)")
+        {
+            std::vector<uint8_t> const v = {0x93, 0x01, 0x02, 0x03};
+            SaxCountdown scp(0);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
+        }
+
+        SECTION("start_object(len)")
+        {
+            std::vector<uint8_t> const v = {0x81, 0xa3, 0x66, 0x6F, 0x6F, 0xc2};
+            SaxCountdown scp(0);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
+        }
+
+        SECTION("key()")
+        {
+            std::vector<uint8_t> const v = {0x81, 0xa3, 0x66, 0x6F, 0x6F, 0xc2};
+            SaxCountdown scp(1);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::msgpack));
+        }
+    }
+}
+
+// use this testcase outside [hide] to run it with Valgrind
+TEST_CASE("single MessagePack roundtrip")
+{
+    SECTION("sample.json")
+    {
+        std::string const filename = TEST_DATA_DIRECTORY "/json_testsuite/sample.json";
+
+        // parse JSON file
+        std::ifstream f_json(filename);
+        json j1 = json::parse(f_json);
+
+        // parse MessagePack file
+        auto packed = utils::read_binary_file(filename + ".msgpack");
+        json j2;
+        CHECK_NOTHROW(j2 = json::from_msgpack(packed));
+
+        // compare parsed JSON values
+        CHECK(j1 == j2);
+
+        SECTION("roundtrips")
+        {
+            SECTION("std::ostringstream")
+            {
+                std::basic_ostringstream<char> ss;
+                json::to_msgpack(j1, ss);
+                json j3 = json::from_msgpack(ss.str());
+                CHECK(j1 == j3);
+            }
+
+            SECTION("std::string")
+            {
+                std::string s;
+                json::to_msgpack(j1, s);
+                json j3 = json::from_msgpack(s);
+                CHECK(j1 == j3);
+            }
+        }
+
+        // check with different start index
+        packed.insert(packed.begin(), 5, 0xff);
+        CHECK(j1 == json::from_msgpack(packed.begin() + 5, packed.end()));
+    }
+}
+
+TEST_CASE("MessagePack roundtrips" * doctest::skip())
+{
+    SECTION("input from msgpack-python")
+    {
+        // most of these are excluded due to differences in key order (not a real problem)
+        std::set<std::string> exclude_packed;
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/1.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/2.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/3.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/4.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json.org/5.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json_testsuite/sample.json"); // kills AppVeyor
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/json_tests/pass1.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/regression/working_file.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_basic.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_long_strings.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_simple.json");
+        exclude_packed.insert(TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_string_unicode.json");
+
+        for (std::string filename :
+                {
+                    TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json",
+                    TEST_DATA_DIRECTORY "/json.org/1.json",
+                    TEST_DATA_DIRECTORY "/json.org/2.json",
+                    TEST_DATA_DIRECTORY "/json.org/3.json",
+                    TEST_DATA_DIRECTORY "/json.org/4.json",
+                    TEST_DATA_DIRECTORY "/json.org/5.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip01.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip02.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip03.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip04.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip05.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip06.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip07.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip08.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip09.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip10.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip11.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip12.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip13.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip14.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip15.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip16.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip17.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip18.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip19.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip20.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip21.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip22.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip23.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip24.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip25.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip26.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip27.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip28.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip29.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip30.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip31.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip32.json",
+                    TEST_DATA_DIRECTORY "/json_testsuite/sample.json", // kills AppVeyor
+                    TEST_DATA_DIRECTORY "/json_tests/pass1.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass2.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass3.json",
+                    TEST_DATA_DIRECTORY "/regression/floats.json",
+                    TEST_DATA_DIRECTORY "/regression/signed_ints.json",
+                    TEST_DATA_DIRECTORY "/regression/unsigned_ints.json",
+                    TEST_DATA_DIRECTORY "/regression/working_file.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_arraysWithSpaces.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_empty-string.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_empty.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_ending_with_newline.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_false.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_heterogeneous.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_null.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_1_and_newline.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_leading_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_several_null.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_trailing_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_0e+1.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_0e1.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_after_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_double_close_to_zero.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_double_huge_neg_exp.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_int_with_exp.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_minus_zero.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_int.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_one.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_zero.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e_neg_exp.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e_pos_exp.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_exponent.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_fraction_exponent.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_neg_exp.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_pos_exponent.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_underflow.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_simple_int.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_simple_real.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_too_big_neg_int.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_too_big_pos_int.json",
+                    //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_very_big_negative_int.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_basic.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key_and_value.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_empty.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_empty_key.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_escaped_null_in_key.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_extreme_numbers.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_long_strings.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_simple.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_string_unicode.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_with_newlines.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_1_2_3_bytes_UTF-8_sequences.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_UTF-16_Surrogates_U+1D11E_MUSICAL_SYMBOL_G_CLEF.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pair.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pairs.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_allowed_escapes.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_backslash_and_u_escaped_zero.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_backslash_doublequotes.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_comments.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_double_escape_a.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_double_escape_n.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_escaped_control_character.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_escaped_noncharacter.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_in_array.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_in_array_with_leading_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_last_surrogates_1_and_2.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_newline_uescaped.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+10FFFF.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+1FFFF.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+FFFF.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_null_escape.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_one-byte-utf-8.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_pi.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_simple_ascii.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_space.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_three-byte-utf-8.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_two-byte-utf-8.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_u+2028_line_sep.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_u+2029_par_sep.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_uEscape.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unescaped_char_delete.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicodeEscapedBackslash.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_2.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_U+200B_ZERO_WIDTH_SPACE.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_U+2064_invisible_plus.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_escaped_double_quote.json",
+                    // TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_utf16.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_utf8.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_with_del_character.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_false.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_int.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_negative_real.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_null.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_string.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_true.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_string_empty.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_trailing_newline.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_true_in_array.json",
+                    TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_whitespace_array.json"
+                })
+        {
+            CAPTURE(filename)
+
+            {
+                INFO_WITH_TEMP(filename + ": std::vector<uint8_t>");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse MessagePack file
+                auto packed = utils::read_binary_file(filename + ".msgpack");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_msgpack(packed));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": std::ifstream");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse MessagePack file
+                std::ifstream f_msgpack(filename + ".msgpack", std::ios::binary);
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_msgpack(f_msgpack));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": uint8_t* and size");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse MessagePack file
+                auto packed = utils::read_binary_file(filename + ".msgpack");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_msgpack({packed.data(), packed.size()}));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": output to output adapters");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json const j1 = json::parse(f_json);
+
+                // parse MessagePack file
+                auto packed = utils::read_binary_file(filename + ".msgpack");
+
+                if (exclude_packed.count(filename) == 0u)
+                {
+                    {
+                        INFO_WITH_TEMP(filename + ": output adapters: std::vector<uint8_t>");
+                        std::vector<uint8_t> vec;
+                        json::to_msgpack(j1, vec);
+                        CHECK(vec == packed);
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-no-mem-leak-on-adl-serialize.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-no-mem-leak-on-adl-serialize.cpp
new file mode 100644
index 00000000..23552178
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-no-mem-leak-on-adl-serialize.cpp
@@ -0,0 +1,86 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+#include <exception>
+#include <iostream>
+
+struct Foo
+{
+    int a;
+    int b;
+};
+
+namespace nlohmann
+{
+template <>
+struct adl_serializer<Foo>
+{
+    static void to_json(json& j, Foo const& f)
+    {
+        switch (f.b)
+        {
+            case 0:
+                j["a"] = f.a;
+                break;
+            case 1:
+                j[0] = f.a;
+                break;
+            default:
+                j = "test";
+        }
+        if (f.a == 1)
+        {
+            throw std::runtime_error("b is invalid");
+        }
+    }
+};
+} // namespace nlohmann
+
+TEST_CASE("check_for_mem_leak_on_adl_to_json-1")
+{
+    try
+    {
+        const nlohmann::json j = Foo {1, 0};
+        std::cout << j.dump() << "\n";
+    }
+    catch (...) // NOLINT(bugprone-empty-catch)
+    {
+        // just ignore the exception in this POC
+    }
+}
+
+TEST_CASE("check_for_mem_leak_on_adl_to_json-2")
+{
+    try
+    {
+        const nlohmann::json j = Foo {1, 1};
+        std::cout << j.dump() << "\n";
+    }
+    catch (...) // NOLINT(bugprone-empty-catch)
+    {
+        // just ignore the exception in this POC
+    }
+}
+
+TEST_CASE("check_for_mem_leak_on_adl_to_json-2")
+{
+    try
+    {
+        const nlohmann::json j = Foo {1, 2};
+        std::cout << j.dump() << "\n";
+    }
+    catch (...) // NOLINT(bugprone-empty-catch)
+    {
+        // just ignore the exception in this POC
+    }
+}
+
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-noexcept.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-noexcept.cpp
new file mode 100644
index 00000000..8364e83a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-noexcept.cpp
@@ -0,0 +1,83 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// disable -Wnoexcept due to struct pod_bis
+DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+DOCTEST_GCC_SUPPRESS_WARNING("-Wnoexcept")
+
+// skip tests if JSON_DisableEnumSerialization=ON (#4384)
+#if defined(JSON_DISABLE_ENUM_SERIALIZATION) && (JSON_DISABLE_ENUM_SERIALIZATION == 1)
+    #define SKIP_TESTS_FOR_ENUM_SERIALIZATION
+#endif
+
+#include <nlohmann/json.hpp>
+
+using nlohmann::json;
+
+namespace
+{
+enum test {};
+
+struct pod {};
+struct pod_bis {};
+
+void to_json(json& /*unused*/, pod /*unused*/) noexcept;
+void to_json(json& /*unused*/, pod_bis /*unused*/);
+void from_json(const json& /*unused*/, pod /*unused*/) noexcept;
+void from_json(const json& /*unused*/, pod_bis /*unused*/);
+void to_json(json& /*unused*/, pod /*unused*/) noexcept {}
+void to_json(json& /*unused*/, pod_bis /*unused*/) {}
+void from_json(const json& /*unused*/, pod /*unused*/) noexcept {}
+void from_json(const json& /*unused*/, pod_bis /*unused*/) {}
+
+static_assert(noexcept(json{}), "");
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), 2)), "");
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), 2.5)), "");
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), true)), "");
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), test {})), "");
+#endif
+static_assert(noexcept(nlohmann::to_json(std::declval<json&>(), pod {})), "");
+static_assert(!noexcept(nlohmann::to_json(std::declval<json&>(), pod_bis{})), "");
+static_assert(noexcept(json(2)), "");
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+static_assert(noexcept(json(test {})), "");
+#endif
+static_assert(noexcept(json(pod {})), "");
+static_assert(noexcept(std::declval<json>().get<pod>()), "");
+static_assert(!noexcept(std::declval<json>().get<pod_bis>()), "");
+static_assert(noexcept(json(pod{})), "");
+} // namespace
+
+TEST_CASE("noexcept")
+{
+    // silence -Wunneeded-internal-declaration errors
+    static_cast<void>(static_cast<void(*)(json&, pod)>(&to_json));
+    static_cast<void>(static_cast<void(*)(json&, pod_bis)>(&to_json));
+    static_cast<void>(static_cast<void(*)(const json&, pod)>(&from_json));
+    static_cast<void>(static_cast<void(*)(const json&, pod_bis)>(&from_json));
+
+    SECTION("nothrow-copy-constructible exceptions")
+    {
+        // for ERR60-CPP (https://github.com/nlohmann/json/issues/531):
+        // Exceptions should be nothrow-copy-constructible. However, compilers
+        // treat std::runtime_exception differently in this regard. Therefore,
+        // we can only demand nothrow-copy-constructibility for our exceptions
+        // if std::runtime_exception is.
+        CHECK(std::is_nothrow_copy_constructible<json::exception>::value == std::is_nothrow_copy_constructible<std::runtime_error>::value);
+        CHECK(std::is_nothrow_copy_constructible<json::parse_error>::value == std::is_nothrow_copy_constructible<std::runtime_error>::value);
+        CHECK(std::is_nothrow_copy_constructible<json::invalid_iterator>::value == std::is_nothrow_copy_constructible<std::runtime_error>::value);
+        CHECK(std::is_nothrow_copy_constructible<json::type_error>::value == std::is_nothrow_copy_constructible<std::runtime_error>::value);
+        CHECK(std::is_nothrow_copy_constructible<json::out_of_range>::value == std::is_nothrow_copy_constructible<std::runtime_error>::value);
+        CHECK(std::is_nothrow_copy_constructible<json::other_error>::value == std::is_nothrow_copy_constructible<std::runtime_error>::value);
+    }
+}
+
+DOCTEST_GCC_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ordered_json.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ordered_json.cpp
new file mode 100644
index 00000000..982b7a3d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ordered_json.cpp
@@ -0,0 +1,71 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+using nlohmann::ordered_json;
+
+TEST_CASE("ordered_json")
+{
+    json j;
+    ordered_json oj;
+
+    j["element3"] = 3;
+    j["element1"] = 1;
+    j["element2"] = 2;
+
+    oj["element3"] = 3;
+    oj["element1"] = 1;
+    oj["element2"] = 2;
+
+    CHECK(j.dump() == "{\"element1\":1,\"element2\":2,\"element3\":3}");
+    CHECK(oj.dump() == "{\"element3\":3,\"element1\":1,\"element2\":2}");
+
+    CHECK(j == json(oj));
+    CHECK(ordered_json(json(oj)) == ordered_json(j));
+
+    j.erase("element1");
+    oj.erase("element1");
+
+    CHECK(j.dump() == "{\"element2\":2,\"element3\":3}");
+    CHECK(oj.dump() == "{\"element3\":3,\"element2\":2}");
+
+    // remove again and nothing changes
+    j.erase("element1");
+    oj.erase("element1");
+
+    CHECK(j.dump() == "{\"element2\":2,\"element3\":3}");
+    CHECK(oj.dump() == "{\"element3\":3,\"element2\":2}");
+
+    // There are no dup keys cause constructor calls emplace...
+    json const multi {{"z", 1}, {"m", 2}, {"m", 3}, {"y", 4}, {"m", 5}};
+    CHECK(multi.size() == 3);
+    CHECK(multi.dump() == "{\"m\":2,\"y\":4,\"z\":1}");
+
+    ordered_json multi_ordered {{"z", 1}, {"m", 2}, {"m", 3}, {"y", 4}, {"m", 5}};
+    CHECK(multi_ordered.size() == 3);
+    CHECK(multi_ordered.dump() == "{\"z\":1,\"m\":2,\"y\":4}");
+    CHECK(multi_ordered.erase("m") == 1);
+    CHECK(multi_ordered.dump() == "{\"z\":1,\"y\":4}");
+
+    // Ranged insert test.
+    // It seems that values shouldn't be overwritten. Only new values are added
+    json j1 {{"c", 1}, {"b", 2}, {"a", 3}};
+    const json j2 {{"c", 77}, {"d", 42}, {"a", 4}};
+    j1.insert( j2.cbegin(), j2.cend() );
+    CHECK(j1.size() == 4);
+    CHECK(j1.dump() == "{\"a\":3,\"b\":2,\"c\":1,\"d\":42}");
+
+    ordered_json oj1 {{"c", 1}, {"b", 2}, {"a", 3}};
+    const ordered_json oj2 {{"c", 77}, {"d", 42}, {"a", 4}};
+    oj1.insert( oj2.cbegin(), oj2.cend() );
+    CHECK(oj1.size() == 4);
+    CHECK(oj1.dump() == "{\"c\":1,\"b\":2,\"a\":3,\"d\":42}");
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ordered_map.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ordered_map.cpp
new file mode 100644
index 00000000..3171177c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ordered_map.cpp
@@ -0,0 +1,310 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::ordered_map;
+
+TEST_CASE("ordered_map")
+{
+    SECTION("constructor")
+    {
+        SECTION("constructor from iterator range")
+        {
+            std::map<std::string, std::string> m {{"eins", "one"}, {"zwei", "two"}, {"drei", "three"}};
+            ordered_map<std::string, std::string> const om(m.begin(), m.end());
+            CHECK(om.size() == 3);
+        }
+
+        SECTION("copy assignment")
+        {
+            std::map<std::string, std::string> m {{"eins", "one"}, {"zwei", "two"}, {"drei", "three"}};
+            ordered_map<std::string, std::string> om(m.begin(), m.end());
+            const auto com = om;
+            om.clear(); // silence a warning by forbidding having "const auto& com = om;"
+            CHECK(com.size() == 3);
+        }
+    }
+
+    SECTION("at")
+    {
+        std::map<std::string, std::string> m {{"eins", "one"}, {"zwei", "two"}, {"drei", "three"}};
+        ordered_map<std::string, std::string> om(m.begin(), m.end());
+        const auto com = om;
+
+        SECTION("with Key&&")
+        {
+            CHECK(om.at(std::string("eins")) == std::string("one"));
+            CHECK(com.at(std::string("eins")) == std::string("one"));
+            CHECK_THROWS_AS(om.at(std::string("vier")), std::out_of_range);
+            CHECK_THROWS_AS(com.at(std::string("vier")), std::out_of_range);
+        }
+
+        SECTION("with const Key&&")
+        {
+            const std::string eins = "eins";
+            const std::string vier = "vier";
+            CHECK(om.at(eins) == std::string("one"));
+            CHECK(com.at(eins) == std::string("one"));
+            CHECK_THROWS_AS(om.at(vier), std::out_of_range);
+            CHECK_THROWS_AS(com.at(vier), std::out_of_range);
+        }
+
+        SECTION("with string literal")
+        {
+            CHECK(om.at("eins") == std::string("one"));
+            CHECK(com.at("eins") == std::string("one"));
+            CHECK_THROWS_AS(om.at("vier"), std::out_of_range);
+            CHECK_THROWS_AS(com.at("vier"), std::out_of_range);
+        }
+    }
+
+    SECTION("operator[]")
+    {
+        std::map<std::string, std::string> m {{"eins", "one"}, {"zwei", "two"}, {"drei", "three"}};
+        ordered_map<std::string, std::string> om(m.begin(), m.end());
+        const auto com = om;
+
+        SECTION("with Key&&")
+        {
+            CHECK(om[std::string("eins")] == std::string("one"));
+            CHECK(com[std::string("eins")] == std::string("one"));
+
+            CHECK(om[std::string("vier")] == std::string(""));
+            CHECK(om.size() == 4);
+        }
+
+        SECTION("with const Key&&")
+        {
+            const std::string eins = "eins";
+            const std::string vier = "vier";
+
+            CHECK(om[eins] == std::string("one"));
+            CHECK(com[eins] == std::string("one"));
+
+            CHECK(om[vier] == std::string(""));
+            CHECK(om.size() == 4);
+        }
+
+        SECTION("with string literal")
+        {
+            CHECK(om["eins"] == std::string("one"));
+            CHECK(com["eins"] == std::string("one"));
+
+            CHECK(om["vier"] == std::string(""));
+            CHECK(om.size() == 4);
+        }
+    }
+
+    SECTION("erase")
+    {
+        ordered_map<std::string, std::string> om;
+        om["eins"] = "one";
+        om["zwei"] = "two";
+        om["drei"] = "three";
+
+        {
+            auto it = om.begin();
+            CHECK(it->first == "eins");
+            ++it;
+            CHECK(it->first == "zwei");
+            ++it;
+            CHECK(it->first == "drei");
+            ++it;
+            CHECK(it == om.end());
+        }
+
+        SECTION("with Key&&")
+        {
+            CHECK(om.size() == 3);
+            CHECK(om.erase(std::string("eins")) == 1);
+            CHECK(om.size() == 2);
+            CHECK(om.erase(std::string("vier")) == 0);
+            CHECK(om.size() == 2);
+
+            auto it = om.begin();
+            CHECK(it->first == "zwei");
+            ++it;
+            CHECK(it->first == "drei");
+            ++it;
+            CHECK(it == om.end());
+        }
+
+        SECTION("with const Key&&")
+        {
+            const std::string eins = "eins";
+            const std::string vier = "vier";
+            CHECK(om.size() == 3);
+            CHECK(om.erase(eins) == 1);
+            CHECK(om.size() == 2);
+            CHECK(om.erase(vier) == 0);
+            CHECK(om.size() == 2);
+
+            auto it = om.begin();
+            CHECK(it->first == "zwei");
+            ++it;
+            CHECK(it->first == "drei");
+            ++it;
+            CHECK(it == om.end());
+        }
+
+        SECTION("with string literal")
+        {
+            CHECK(om.size() == 3);
+            CHECK(om.erase("eins") == 1);
+            CHECK(om.size() == 2);
+            CHECK(om.erase("vier") == 0);
+            CHECK(om.size() == 2);
+
+            auto it = om.begin();
+            CHECK(it->first == "zwei");
+            ++it;
+            CHECK(it->first == "drei");
+            ++it;
+            CHECK(it == om.end());
+        }
+
+        SECTION("with iterator")
+        {
+            CHECK(om.size() == 3);
+            CHECK(om.begin()->first == "eins");
+            CHECK(std::next(om.begin(), 1)->first == "zwei");
+            CHECK(std::next(om.begin(), 2)->first == "drei");
+
+            auto it = om.erase(om.begin());
+            CHECK(it->first == "zwei");
+            CHECK(om.size() == 2);
+
+            auto it2 = om.begin();
+            CHECK(it2->first == "zwei");
+            ++it2;
+            CHECK(it2->first == "drei");
+            ++it2;
+            CHECK(it2 == om.end());
+        }
+
+        SECTION("with iterator pair")
+        {
+            SECTION("range in the middle")
+            {
+                // need more elements
+                om["vier"] = "four";
+                om["fünf"] = "five";
+
+                // delete "zwei" and "drei"
+                auto it = om.erase(om.begin() + 1, om.begin() + 3);
+                CHECK(it->first == "vier");
+                CHECK(om.size() == 3);
+            }
+
+            SECTION("range at the beginning")
+            {
+                // need more elements
+                om["vier"] = "four";
+                om["fünf"] = "five";
+
+                // delete "eins" and "zwei"
+                auto it = om.erase(om.begin(), om.begin() + 2);
+                CHECK(it->first == "drei");
+                CHECK(om.size() == 3);
+            }
+
+            SECTION("range at the end")
+            {
+                // need more elements
+                om["vier"] = "four";
+                om["fünf"] = "five";
+
+                // delete "vier" and "fünf"
+                auto it = om.erase(om.begin() + 3, om.end());
+                CHECK(it == om.end());
+                CHECK(om.size() == 3);
+            }
+        }
+    }
+
+    SECTION("count")
+    {
+        ordered_map<std::string, std::string> om;
+        om["eins"] = "one";
+        om["zwei"] = "two";
+        om["drei"] = "three";
+
+        const std::string eins("eins");
+        const std::string vier("vier");
+        CHECK(om.count("eins") == 1);
+        CHECK(om.count(std::string("eins")) == 1);
+        CHECK(om.count(eins) == 1);
+        CHECK(om.count("vier") == 0);
+        CHECK(om.count(std::string("vier")) == 0);
+        CHECK(om.count(vier) == 0);
+    }
+
+    SECTION("find")
+    {
+        ordered_map<std::string, std::string> om;
+        om["eins"] = "one";
+        om["zwei"] = "two";
+        om["drei"] = "three";
+        const auto com = om;
+
+        const std::string eins("eins");
+        const std::string vier("vier");
+        CHECK(om.find("eins") == om.begin());
+        CHECK(om.find(std::string("eins")) == om.begin());
+        CHECK(om.find(eins) == om.begin());
+        CHECK(om.find("vier") == om.end());
+        CHECK(om.find(std::string("vier")) == om.end());
+        CHECK(om.find(vier) == om.end());
+
+        CHECK(com.find("eins") == com.begin());
+        CHECK(com.find(std::string("eins")) == com.begin());
+        CHECK(com.find(eins) == com.begin());
+        CHECK(com.find("vier") == com.end());
+        CHECK(com.find(std::string("vier")) == com.end());
+        CHECK(com.find(vier) == com.end());
+    }
+
+    SECTION("insert")
+    {
+        ordered_map<std::string, std::string> om;
+        om["eins"] = "one";
+        om["zwei"] = "two";
+        om["drei"] = "three";
+
+        SECTION("const value_type&")
+        {
+            ordered_map<std::string, std::string>::value_type const vt1 {"eins", "1"};
+            ordered_map<std::string, std::string>::value_type const vt4 {"vier", "four"};
+
+            auto res1 = om.insert(vt1);
+            CHECK(res1.first == om.begin());
+            CHECK(res1.second == false);
+            CHECK(om.size() == 3);
+
+            auto res4 = om.insert(vt4);
+            CHECK(res4.first == om.begin() + 3);
+            CHECK(res4.second == true);
+            CHECK(om.size() == 4);
+        }
+
+        SECTION("value_type&&")
+        {
+            auto res1 = om.insert({"eins", "1"});
+            CHECK(res1.first == om.begin());
+            CHECK(res1.second == false);
+            CHECK(om.size() == 3);
+
+            auto res4 = om.insert({"vier", "four"});
+            CHECK(res4.first == om.begin() + 3);
+            CHECK(res4.second == true);
+            CHECK(om.size() == 4);
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-pointer_access.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-pointer_access.cpp
new file mode 100644
index 00000000..b5734559
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-pointer_access.cpp
@@ -0,0 +1,479 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("pointer access")
+{
+    SECTION("pointer access to object_t")
+    {
+        using test_type = json::object_t;
+        json value = {{"one", 1}, {"two", 2}};
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<json::object_t*>() != nullptr);
+        CHECK(value.get_ptr<json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to const object_t")
+    {
+        using test_type = const json::object_t;
+        const json value = {{"one", 1}, {"two", 2}};
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() != nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to array_t")
+    {
+        using test_type = json::array_t;
+        json value = {1, 2, 3, 4};
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<json::array_t*>() != nullptr);
+        CHECK(value.get_ptr<json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to const array_t")
+    {
+        using test_type = const json::array_t;
+        const json value = {1, 2, 3, 4};
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() != nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to string_t")
+    {
+        using test_type = json::string_t;
+        json value = "hello";
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<json::string_t*>() != nullptr);
+        CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to const string_t")
+    {
+        using test_type = const json::string_t;
+        const json value = "hello";
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() != nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to boolean_t")
+    {
+        using test_type = json::boolean_t;
+        json value = false;
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<json::boolean_t*>() != nullptr);
+        CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to const boolean_t")
+    {
+        using test_type = const json::boolean_t;
+        const json value = false;
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        //CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() != nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to number_integer_t")
+    {
+        using test_type = json::number_integer_t;
+        json value = 23;
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_integer_t*>() != nullptr);
+        CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to const number_integer_t")
+    {
+        using test_type = const json::number_integer_t;
+        const json value = 23;
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() != nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to number_unsigned_t")
+    {
+        using test_type = json::number_unsigned_t;
+        json value = 23u;
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_unsigned_t*>() != nullptr);
+        CHECK(value.get_ptr<json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to const number_unsigned_t")
+    {
+        using test_type = const json::number_unsigned_t;
+        const json value = 23u;
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() != nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to number_float_t")
+    {
+        using test_type = json::number_float_t;
+        json value = 42.23;
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == Approx(value.get<test_type>()));
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == Approx(value.get<test_type>()));
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == Approx(value.get<test_type>()));
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<json::number_float_t*>() != nullptr);
+        CHECK(value.get_ptr<json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to const number_float_t")
+    {
+        using test_type = const json::number_float_t;
+        const json value = 42.23;
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == Approx(value.get<test_type>()));
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == Approx(value.get<test_type>()));
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == Approx(value.get<test_type>()));
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() != nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() == nullptr);
+    }
+
+    SECTION("pointer access to const binary_t")
+    {
+        using test_type = const json::binary_t;
+        const json value = json::binary({1, 2, 3});
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() != nullptr);
+    }
+
+    SECTION("pointer access to const binary_t")
+    {
+        using test_type = const json::binary_t;
+        const json value = json::binary({});
+
+        // check if pointers are returned correctly
+        test_type* p1 = value.get_ptr<test_type*>();
+        CHECK(p1 == value.get_ptr<test_type*>());
+        CHECK(*p1 == value.get<test_type>());
+
+        const test_type* p2 = value.get_ptr<const test_type*>();
+        CHECK(p2 == value.get_ptr<const test_type*>());
+        CHECK(*p2 == value.get<test_type>());
+
+        const test_type* const p3 = value.get_ptr<const test_type* const>();
+        CHECK(p3 == value.get_ptr<const test_type* const>());
+        CHECK(*p3 == value.get<test_type>());
+
+        // check if null pointers are returned correctly
+        CHECK(value.get_ptr<const json::object_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::array_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::string_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::boolean_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_integer_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_unsigned_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::number_float_t*>() == nullptr);
+        CHECK(value.get_ptr<const json::binary_t*>() != nullptr);
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-readme.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-readme.cpp
new file mode 100644
index 00000000..66f9d9b0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-readme.cpp
@@ -0,0 +1,304 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <iostream>
+#include <sstream>
+#include <iomanip>
+
+// local variable is initialized but not referenced
+DOCTEST_MSVC_SUPPRESS_WARNING_PUSH
+DOCTEST_MSVC_SUPPRESS_WARNING(4189)
+
+TEST_CASE("README" * doctest::skip())
+{
+    {
+        // redirect std::cout for the README file
+        auto* old_cout_buffer = std::cout.rdbuf();
+        std::ostringstream const new_stream;
+        std::cout.rdbuf(new_stream.rdbuf());
+        {
+            // create an empty structure (null)
+            json j;
+
+            // add a number that is stored as double (note the implicit conversion of j to an object)
+            j["pi"] = 3.141;
+
+            // add a Boolean that is stored as bool
+            j["happy"] = true;
+
+            // add a string that is stored as std::string
+            j["name"] = "Niels";
+
+            // add another null object by passing nullptr
+            j["nothing"] = nullptr;
+
+            // add an object inside the object
+            j["answer"]["everything"] = 42;
+
+            // add an array that is stored as std::vector (using an initializer list)
+            j["list"] = { 1, 0, 2 };
+
+            // add another object (using an initializer list of pairs)
+            j["object"] = { {"currency", "USD"}, {"value", 42.99} };
+
+            // instead, you could also write (which looks very similar to the JSON above)
+            json const j2 =
+            {
+                {"pi", 3.141},
+                {"happy", true},
+                {"name", "Niels"},
+                {"nothing", nullptr},
+                {
+                    "answer", {
+                        {"everything", 42}
+                    }
+                },
+                {"list", {1, 0, 2}},
+                {
+                    "object", {
+                        {"currency", "USD"},
+                        {"value", 42.99}
+                    }
+                }
+            };
+        }
+
+        {
+            // ways to express the empty array []
+            json const empty_array_implicit = {{}};
+            CHECK(empty_array_implicit.is_array());
+            json const empty_array_explicit = json::array();
+            CHECK(empty_array_explicit.is_array());
+
+            // a way to express the empty object {}
+            json const empty_object_explicit = json::object();
+            CHECK(empty_object_explicit.is_object());
+
+            // a way to express an _array_ of key/value pairs [["currency", "USD"], ["value", 42.99]]
+            json array_not_object = json::array({ {"currency", "USD"}, {"value", 42.99} });
+            CHECK(array_not_object.is_array());
+            CHECK(array_not_object.size() == 2);
+            CHECK(array_not_object[0].is_array());
+            CHECK(array_not_object[1].is_array());
+        }
+
+        {
+            // create object from string literal
+            json const j = "{ \"happy\": true, \"pi\": 3.141 }"_json; // NOLINT(modernize-raw-string-literal)
+
+            // or even nicer with a raw string literal
+            auto j2 = R"({
+                "happy": true,
+                "pi": 3.141
+            })"_json;
+
+            // or explicitly
+            auto j3 = json::parse(R"({"happy": true, "pi": 3.141})");
+
+            // explicit conversion to string
+            std::string const s = j.dump();     // NOLINT(bugprone-unused-local-non-trivial-variable) // {\"happy\":true,\"pi\":3.141}
+
+            // serialization with pretty printing
+            // pass in the amount of spaces to indent
+            std::cout << j.dump(4) << std::endl; // NOLINT(performance-avoid-endl)
+            // {
+            //     "happy": true,
+            //     "pi": 3.141
+            // }
+
+            std::cout << std::setw(2) << j << std::endl; // NOLINT(performance-avoid-endl)
+        }
+
+        {
+            // create an array using push_back
+            json j;
+            j.push_back("foo");
+            j.push_back(1);
+            j.push_back(true);
+
+            // comparison
+            bool x = (j == R"(["foo", 1, true])"_json);  // true
+            CHECK(x == true);
+
+            // iterate the array
+            for (json::iterator it = j.begin(); it != j.end(); ++it) // NOLINT(modernize-loop-convert)
+            {
+                std::cout << *it << '\n';
+            }
+
+            // range-based for
+            for (auto& element : j)
+            {
+                std::cout << element << '\n';
+            }
+
+            // getter/setter
+            const auto tmp = j[0].get<std::string>(); // NOLINT(bugprone-unused-local-non-trivial-variable)
+            j[1] = 42;
+            bool foo{j.at(2)};
+            CHECK(foo == true);
+
+            // other stuff
+            CHECK(j.size() == 3);                     // 3 entries
+            CHECK_FALSE(j.empty());                   // false
+            CHECK(j.type() == json::value_t::array);  // json::value_t::array
+            j.clear();                                // the array is empty again
+
+            // create an object
+            json o;
+            o["foo"] = 23;
+            o["bar"] = false;
+            o["baz"] = 3.141;
+
+            // find an entry
+            CHECK(o.find("foo") != o.end());
+            if (o.find("foo") != o.end()) // NOLINT(readability-container-contains)
+            {
+                // there is an entry with key "foo"
+            }
+        }
+
+        {
+            std::vector<int> const c_vector {1, 2, 3, 4};
+            json const j_vec(c_vector);
+            // [1, 2, 3, 4]
+
+            std::deque<float> const c_deque {1.2f, 2.3f, 3.4f, 5.6f};
+            json const j_deque(c_deque);
+            // [1.2, 2.3, 3.4, 5.6]
+
+            std::list<bool> const c_list {true, true, false, true};
+            json const j_list(c_list);
+            // [true, true, false, true]
+
+            std::forward_list<int64_t> const c_flist {12345678909876, 23456789098765, 34567890987654, 45678909876543};
+            json const j_flist(c_flist);
+            // [12345678909876, 23456789098765, 34567890987654, 45678909876543]
+
+            std::array<unsigned long, 4> const c_array {{1, 2, 3, 4}};
+            json const j_array(c_array);
+            // [1, 2, 3, 4]
+
+            std::set<std::string> const c_set {"one", "two", "three", "four", "one"};
+            json const j_set(c_set); // only one entry for "one" is used
+            // ["four", "one", "three", "two"]
+
+            std::unordered_set<std::string> const c_uset {"one", "two", "three", "four", "one"};
+            json const j_uset(c_uset); // only one entry for "one" is used
+            // maybe ["two", "three", "four", "one"]
+
+            std::multiset<std::string> const c_mset {"one", "two", "one", "four"};
+            json const j_mset(c_mset); // both entries for "one" are used
+            // maybe ["one", "two", "one", "four"]
+
+            std::unordered_multiset<std::string> const c_umset {"one", "two", "one", "four"};
+            json const j_umset(c_umset); // both entries for "one" are used
+            // maybe ["one", "two", "one", "four"]
+        }
+
+        {
+            std::map<std::string, int> const c_map { {"one", 1}, {"two", 2}, {"three", 3} };
+            json const j_map(c_map);
+            // {"one": 1, "two": 2, "three": 3}
+
+            std::unordered_map<const char*, float> const c_umap { {"one", 1.2f}, {"two", 2.3f}, {"three", 3.4f} };
+            json const j_umap(c_umap);
+            // {"one": 1.2, "two": 2.3, "three": 3.4}
+
+            std::multimap<std::string, bool> const c_mmap { {"one", true}, {"two", true}, {"three", false}, {"three", true} };
+            json const j_mmap(c_mmap); // only one entry for key "three" is used
+            // maybe {"one": true, "two": true, "three": true}
+
+            std::unordered_multimap<std::string, bool> const c_ummap { {"one", true}, {"two", true}, {"three", false}, {"three", true} };
+            json const j_ummap(c_ummap); // only one entry for key "three" is used
+            // maybe {"one": true, "two": true, "three": true}
+        }
+
+        {
+            // strings
+            std::string const s1 = "Hello, world!";
+            json const js = s1;
+            auto s2 = js.get<std::string>(); // NOLINT(bugprone-unused-local-non-trivial-variable)
+
+            // Booleans
+            bool const b1 = true;
+            json const jb = b1;
+            bool b2{jb};
+            CHECK(b2 == true);
+
+            // numbers
+            int const i = 42;
+            json const jn = i;
+            double f{jn};
+            CHECK(f == 42);
+
+            // etc.
+
+            std::string const vs = js.get<std::string>(); // NOLINT(bugprone-unused-local-non-trivial-variable)
+            bool vb = jb.get<bool>();
+            CHECK(vb == true);
+            int vi = jn.get<int>();
+            CHECK(vi == 42);
+
+            // etc.
+        }
+
+        {
+            // a JSON value
+            json j_original = R"({
+                "baz": ["one", "two", "three"],
+                "foo": "bar"
+            })"_json;
+
+            // access members with a JSON pointer (RFC 6901)
+            j_original["/baz/1"_json_pointer];
+            // "two"
+
+            // a JSON patch (RFC 6902)
+            json const j_patch = R"([
+                { "op": "replace", "path": "/baz", "value": "boo" },
+                { "op": "add", "path": "/hello", "value": ["world"] },
+                { "op": "remove", "path": "/foo"}
+            ])"_json;
+
+            // apply the patch
+            json const j_result = j_original.patch(j_patch);
+            // {
+            //    "baz": "boo",
+            //    "hello": ["world"]
+            // }
+
+            // calculate a JSON patch from two JSON values
+            auto res = json::diff(j_result, j_original);
+            // [
+            //   { "op":" replace", "path": "/baz", "value": ["one", "two", "three"] },
+            //   { "op":"remove","path":"/hello" },
+            //   { "op":"add","path":"/foo","value":"bar" }
+            // ]
+        }
+
+        // restore old std::cout
+        std::cout.rdbuf(old_cout_buffer);
+    }
+}
+
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-reference_access.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-reference_access.cpp
new file mode 100644
index 00000000..d63a470d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-reference_access.cpp
@@ -0,0 +1,247 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("reference access")
+{
+    // create a JSON value with different types
+    const json json_types =
+    {
+        {"boolean", true},
+        {
+            "number", {
+                {"integer", 42},
+                {"floating-point", 17.23}
+            }
+        },
+        {"string", "Hello, world!"},
+        {"array", {1, 2, 3, 4, 5}},
+        {"null", nullptr}
+    };
+
+    SECTION("reference access to object_t")
+    {
+        using test_type = json::object_t;
+        json value = {{"one", 1}, {"two", 2}};
+
+        // check if references are returned correctly
+        auto& p1 = value.get_ref<test_type&>();
+        CHECK(&p1 == value.get_ptr<test_type*>());
+        CHECK(p1 == value.get<test_type>());
+
+        const auto& p2 = value.get_ref<const test_type&>();
+        CHECK(&p2 == value.get_ptr<const test_type*>());
+        CHECK(p2 == value.get<test_type>());
+
+        // check if mismatching references throw correctly
+        CHECK_NOTHROW(value.get_ref<json::object_t&>());
+        CHECK_THROWS_WITH_AS(value.get_ref<json::array_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is object", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::string_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is object", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::boolean_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is object", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_integer_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is object", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_unsigned_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is object", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_float_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is object", json::type_error&);
+    }
+
+    SECTION("const reference access to const object_t")
+    {
+        using test_type = json::object_t;
+        const json value = {{"one", 1}, {"two", 2}};
+
+        // this should not compile
+        // test_type& p1 = value.get_ref<test_type&>();
+
+        // check if references are returned correctly
+        const auto& p2 = value.get_ref<const test_type&>();
+        CHECK(&p2 == value.get_ptr<const test_type*>());
+        CHECK(p2 == value.get<test_type>());
+    }
+
+    SECTION("reference access to array_t")
+    {
+        using test_type = json::array_t;
+        json value = {1, 2, 3, 4};
+
+        // check if references are returned correctly
+        auto& p1 = value.get_ref<test_type&>();
+        CHECK(&p1 == value.get_ptr<test_type*>());
+        CHECK(p1 == value.get<test_type>());
+
+        const auto& p2 = value.get_ref<const test_type&>();
+        CHECK(&p2 == value.get_ptr<const test_type*>());
+        CHECK(p2 == value.get<test_type>());
+
+        // check if mismatching references throw correctly
+        CHECK_THROWS_WITH_AS(value.get_ref<json::object_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is array", json::type_error&);
+        CHECK_NOTHROW(value.get_ref<json::array_t&>());
+        CHECK_THROWS_WITH_AS(value.get_ref<json::string_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is array", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::boolean_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is array", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_integer_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is array", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_unsigned_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is array", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_float_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is array", json::type_error&);
+    }
+
+    SECTION("reference access to string_t")
+    {
+        using test_type = json::string_t;
+        json value = "hello";
+
+        // check if references are returned correctly
+        auto& p1 = value.get_ref<test_type&>();
+        CHECK(&p1 == value.get_ptr<test_type*>());
+        CHECK(p1 == value.get<test_type>());
+
+        const auto& p2 = value.get_ref<const test_type&>();
+        CHECK(&p2 == value.get_ptr<const test_type*>());
+        CHECK(p2 == value.get<test_type>());
+
+        // check if mismatching references throw correctly
+        CHECK_THROWS_WITH_AS(value.get_ref<json::object_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is string", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::array_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is string", json::type_error&);
+        CHECK_NOTHROW(value.get_ref<json::string_t&>());
+        CHECK_THROWS_WITH_AS(value.get_ref<json::boolean_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is string", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_integer_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is string", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_unsigned_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is string", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_float_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is string", json::type_error&);
+    }
+
+    SECTION("reference access to boolean_t")
+    {
+        using test_type = json::boolean_t;
+        json value = false;
+
+        // check if references are returned correctly
+        auto& p1 = value.get_ref<test_type&>();
+        CHECK(&p1 == value.get_ptr<test_type*>());
+        CHECK(p1 == value.get<test_type>());
+
+        const auto& p2 = value.get_ref<const test_type&>();
+        CHECK(&p2 == value.get_ptr<const test_type*>());
+        CHECK(p2 == value.get<test_type>());
+
+        // check if mismatching references throw correctly
+        CHECK_THROWS_WITH_AS(value.get_ref<json::object_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is boolean", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::array_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is boolean", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::string_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is boolean", json::type_error&);
+        CHECK_NOTHROW(value.get_ref<json::boolean_t&>());
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_integer_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is boolean", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_unsigned_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is boolean", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_float_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is boolean", json::type_error&);
+    }
+
+    SECTION("reference access to number_integer_t")
+    {
+        using test_type = json::number_integer_t;
+        json value = -23;
+
+        // check if references are returned correctly
+        auto& p1 = value.get_ref<test_type&>();
+        CHECK(&p1 == value.get_ptr<test_type*>());
+        CHECK(p1 == value.get<test_type>());
+
+        const auto& p2 = value.get_ref<const test_type&>();
+        CHECK(&p2 == value.get_ptr<const test_type*>());
+        CHECK(p2 == value.get<test_type>());
+
+        // check if mismatching references throw correctly
+        CHECK_THROWS_WITH_AS(value.get_ref<json::object_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::array_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::string_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::boolean_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_NOTHROW(value.get_ref<json::number_integer_t&>());
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_unsigned_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_float_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+    }
+
+    SECTION("reference access to number_unsigned_t")
+    {
+        using test_type = json::number_unsigned_t;
+        json value = 23u;
+
+        // check if references are returned correctly
+        auto& p1 = value.get_ref<test_type&>();
+        CHECK(&p1 == value.get_ptr<test_type*>());
+        CHECK(p1 == value.get<test_type>());
+
+        const auto& p2 = value.get_ref<const test_type&>();
+        CHECK(&p2 == value.get_ptr<const test_type*>());
+        CHECK(p2 == value.get<test_type>());
+
+        // check if mismatching references throw correctly
+        CHECK_THROWS_WITH_AS(value.get_ref<json::object_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::array_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::string_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::boolean_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_integer_t&>(),
+                             "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_NOTHROW(value.get_ref<json::number_unsigned_t&>());
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_float_t&>(), "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+    }
+
+    SECTION("reference access to number_float_t")
+    {
+        using test_type = json::number_float_t;
+        json value = 42.23;
+
+        // check if references are returned correctly
+        auto& p1 = value.get_ref<test_type&>();
+        CHECK(&p1 == value.get_ptr<test_type*>());
+        CHECK(p1 == value.get<test_type>());
+
+        const auto& p2 = value.get_ref<const test_type&>();
+        CHECK(&p2 == value.get_ptr<const test_type*>());
+        CHECK(p2 == value.get<test_type>());
+
+        // check if mismatching references throw correctly
+        CHECK_THROWS_WITH_AS(value.get_ref<json::object_t&>(), "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::array_t&>(), "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::string_t&>(), "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::boolean_t&>(), "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_integer_t&>(), "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_THROWS_WITH_AS(value.get_ref<json::number_unsigned_t&>(), "[json.exception.type_error.303] incompatible ReferenceType for get_ref, actual type is number", json::type_error&);
+        CHECK_NOTHROW(value.get_ref<json::number_float_t&>());
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-regression1.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-regression1.cpp
new file mode 100644
index 00000000..73d5e4cc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-regression1.cpp
@@ -0,0 +1,1520 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// for some reason including this after the json header leads to linker errors with VS 2017...
+#include <locale>
+
+// skip tests if JSON_DisableEnumSerialization=ON (#4384)
+#if defined(JSON_DISABLE_ENUM_SERIALIZATION) && (JSON_DISABLE_ENUM_SERIALIZATION == 1)
+    #define SKIP_TESTS_FOR_ENUM_SERIALIZATION
+#endif
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <fstream>
+#include <sstream>
+#include <list>
+#include <limits>
+#include <cstdio>
+#include "make_test_data_available.hpp"
+
+#ifdef JSON_HAS_CPP_17
+    #include <variant>
+#endif
+
+#include "fifo_map.hpp"
+
+/////////////////////////////////////////////////////////////////////
+// for #972
+/////////////////////////////////////////////////////////////////////
+
+template<class K, class V, class dummy_compare, class A>
+using my_workaround_fifo_map = nlohmann::fifo_map<K, V, nlohmann::fifo_map_compare<K>, A>;
+using my_json = nlohmann::basic_json<my_workaround_fifo_map>;
+
+/////////////////////////////////////////////////////////////////////
+// for #977
+/////////////////////////////////////////////////////////////////////
+
+namespace ns
+{
+struct foo
+{
+    int x;
+};
+
+template <typename, typename SFINAE = void>
+struct foo_serializer;
+
+template<typename T>
+struct foo_serializer<T, typename std::enable_if<std::is_same<foo, T>::value>::type>
+{
+    template <typename BasicJsonType>
+    static void to_json(BasicJsonType& j, const T& value)
+    {
+        j = BasicJsonType{{"x", value.x}};
+    }
+    template <typename BasicJsonType>
+    static void from_json(const BasicJsonType& j, T& value)     // !!!
+    {
+        nlohmann::from_json(j.at("x"), value.x);
+    }
+};
+
+template<typename T>
+struct foo_serializer < T, typename std::enable_if < !std::is_same<foo, T>::value >::type >
+{
+    template <typename BasicJsonType>
+    static void to_json(BasicJsonType& j, const T& value) noexcept // NOLINT(bugprone-exception-escape)
+    {
+        ::nlohmann::to_json(j, value);
+    }
+    template <typename BasicJsonType>
+    static void from_json(const BasicJsonType& j, T& value)   //!!!
+    {
+        ::nlohmann::from_json(j, value);
+    }
+};
+} // namespace ns
+
+using foo_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t,
+      std::uint64_t, double, std::allocator, ns::foo_serializer, std::vector<std::uint8_t>>;
+
+/////////////////////////////////////////////////////////////////////
+// for #805
+/////////////////////////////////////////////////////////////////////
+
+namespace
+{
+struct nocopy // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+{
+    nocopy() = default;
+    nocopy(const nocopy&) = delete;
+    nocopy(nocopy&&) = delete;
+    nocopy& operator=(const nocopy&) = delete;
+    nocopy& operator=(nocopy&&) = delete;
+
+    int val = 0;
+
+    friend void to_json(json& j, const nocopy& n)
+    {
+        j = {{"val", n.val}};
+    }
+};
+} // namespace
+
+TEST_CASE("regression tests 1")
+{
+    SECTION("issue #60 - Double quotation mark is not parsed correctly")
+    {
+        SECTION("escape_doublequote")
+        {
+            const auto* s = R"(["\"foo\""])";
+            json j = json::parse(s);
+            auto expected = R"(["\"foo\""])"_json;
+            CHECK(j == expected);
+        }
+    }
+
+    SECTION("issue #70 - Handle infinity and NaN cases")
+    {
+        // previously, NAN/INFINITY created a null value; now, the values are
+        // properly stored, but are dumped as "null"
+        SECTION("NAN value")
+        {
+            CHECK(json(NAN).dump() == "null");
+            CHECK(json(json::number_float_t(NAN)).dump() == "null");
+        }
+
+        SECTION("infinity")
+        {
+            CHECK(json(INFINITY).dump() == "null");
+            CHECK(json(json::number_float_t(INFINITY)).dump() == "null");
+        }
+
+        // With 3.0.0, the semantics of this changed: NAN and infinity are
+        // stored properly inside the JSON value (no exception or conversion
+        // to null), but are serialized as null.
+        SECTION("NAN value")
+        {
+            json const j1 = NAN;
+            CHECK(j1.is_number_float());
+            json::number_float_t const f1{j1};
+            CHECK(std::isnan(f1));
+
+            json const j2 = static_cast<json::number_float_t>(NAN);
+            CHECK(j2.is_number_float());
+            json::number_float_t const f2{j2};
+            CHECK(std::isnan(f2));
+        }
+
+        SECTION("infinity")
+        {
+            json const j1 = INFINITY;
+            CHECK(j1.is_number_float());
+            json::number_float_t const f1{j1};
+            CHECK(!std::isfinite(f1));
+
+            json const j2 = static_cast<json::number_float_t>(INFINITY);
+            CHECK(j2.is_number_float());
+            json::number_float_t const f2{j2};
+            CHECK(!std::isfinite(f2));
+        }
+    }
+
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+    SECTION("pull request #71 - handle enum type")
+    {
+        enum { t = 0, u = 102};
+        json j = json::array();
+        j.push_back(t);
+
+        // maybe this is not the place to test this?
+        json j2 = u;
+
+        auto anon_enum_value = j2.get<decltype(u)>();
+        CHECK(u == anon_enum_value);
+
+        // check if the actual value was stored
+        CHECK(j2 == 102);
+
+        static_assert(std::is_same<decltype(anon_enum_value), decltype(u)>::value, "types must be the same");
+
+        j.push_back(json::object(
+        {
+            {"game_type", t}
+        }));
+    }
+#endif
+
+    SECTION("issue #76 - dump() / parse() not idempotent")
+    {
+        // create JSON object
+        json fields;
+        fields["one"] = std::string("one");
+        fields["two"] = std::string("two three");
+        fields["three"] = std::string("three \"four\"");
+
+        // create another JSON object by deserializing the serialization
+        std::string const payload = fields.dump();
+        json parsed_fields = json::parse(payload);
+
+        // check individual fields to match both objects
+        CHECK(parsed_fields["one"] == fields["one"]);
+        CHECK(parsed_fields["two"] == fields["two"]);
+        CHECK(parsed_fields["three"] == fields["three"]);
+
+        // check individual fields to match original input
+        CHECK(parsed_fields["one"] == std::string("one"));
+        CHECK(parsed_fields["two"] == std::string("two three"));
+        CHECK(parsed_fields["three"] == std::string("three \"four\""));
+
+        // check equality of the objects
+        CHECK(parsed_fields == fields);
+
+        // check equality of the serialized objects
+        CHECK(fields.dump() == parsed_fields.dump());
+
+        // check everything in one line
+        CHECK(fields == json::parse(fields.dump()));
+    }
+
+    SECTION("issue #82 - lexer::get_number return NAN")
+    {
+        const auto* const content = R"(
+        {
+            "Test":"Test1",
+            "Number":100,
+            "Foo":42.42
+        })";
+
+        std::stringstream ss;
+        ss << content;
+        json j;
+        ss >> j;
+
+        auto test = j["Test"].get<std::string>();
+        CHECK(test == "Test1");
+        int number{j["Number"]};
+        CHECK(number == 100);
+        float foo{j["Foo"]};
+        CHECK(static_cast<double>(foo) == Approx(42.42));
+    }
+
+    SECTION("issue #89 - nonstandard integer type")
+    {
+        // create JSON class with nonstandard integer number type
+        using custom_json =
+            nlohmann::basic_json<std::map, std::vector, std::string, bool, int32_t, uint32_t, float>;
+        custom_json j;
+        j["int_1"] = 1;
+        CHECK(j["int_1"] == 1);
+
+        // tests for correct handling of non-standard integers that overflow the type selected by the user
+
+        // unsigned integer object creation - expected to wrap and still be stored as an integer
+        j = 4294967296U; // 2^32
+        CHECK(static_cast<int>(j.type()) == static_cast<int>(custom_json::value_t::number_unsigned));
+        CHECK(j.get<uint32_t>() == 0);  // Wrap
+
+        // unsigned integer parsing - expected to overflow and be stored as a float
+        j = custom_json::parse("4294967296"); // 2^32
+        CHECK(static_cast<int>(j.type()) == static_cast<int>(custom_json::value_t::number_float));
+        CHECK(j.get<float>() == 4294967296.0f);
+
+        // integer object creation - expected to wrap and still be stored as an integer
+        j = -2147483649LL; // -2^31-1
+        CHECK(static_cast<int>(j.type()) == static_cast<int>(custom_json::value_t::number_integer));
+        CHECK(j.get<int32_t>() == 2147483647);  // Wrap
+
+        // integer parsing - expected to overflow and be stored as a float with rounding
+        j = custom_json::parse("-2147483649"); // -2^31
+        CHECK(static_cast<int>(j.type()) == static_cast<int>(custom_json::value_t::number_float));
+        CHECK(j.get<float>() == -2147483650.0f);
+    }
+
+    SECTION("issue #93 reverse_iterator operator inheritance problem")
+    {
+        {
+            json a = {1, 2, 3};
+            json::reverse_iterator rit = a.rbegin();
+            ++rit;
+            CHECK(*rit == json(2));
+            CHECK(rit.value() == json(2));
+        }
+        {
+            json a = {1, 2, 3};
+            json::reverse_iterator const rit = ++a.rbegin();
+            CHECK(*rit == json(2));
+            CHECK(rit.value() == json(2));
+        }
+        {
+            json a = {1, 2, 3};
+            json::reverse_iterator rit = a.rbegin();
+            ++rit;
+            json b = {0, 0, 0};
+            std::transform(rit, a.rend(), b.rbegin(), [](json el)
+            {
+                return el;
+            });
+            CHECK(b == json({0, 1, 2}));
+        }
+        {
+            json a = {1, 2, 3};
+            json b = {0, 0, 0};
+            std::transform(++a.rbegin(), a.rend(), b.rbegin(), [](json el)
+            {
+                return el;
+            });
+            CHECK(b == json({0, 1, 2}));
+        }
+    }
+
+    SECTION("issue #100 - failed to iterator json object with reverse_iterator")
+    {
+        json config =
+        {
+            { "111", 111 },
+            { "112", 112 },
+            { "113", 113 }
+        };
+
+        std::stringstream ss;
+
+        for (auto it = config.begin(); it != config.end(); ++it)
+        {
+            ss << it.key() << ": " << it.value() << '\n';
+        }
+
+        for (auto it = config.rbegin(); it != config.rend(); ++it)
+        {
+            ss << it.key() << ": " << it.value() << '\n';
+        }
+
+        CHECK(ss.str() == "111: 111\n112: 112\n113: 113\n113: 113\n112: 112\n111: 111\n");
+    }
+
+    SECTION("issue #101 - binary string causes numbers to be dumped as hex")
+    {
+        int64_t const number = 10;
+        std::string const bytes{"\x00" "asdf\n", 6};
+        json j;
+        j["int64"] = number;
+        j["binary string"] = bytes;
+        // make sure the number is really printed as decimal "10" and not as
+        // hexadecimal "a"
+        CHECK(j.dump() == "{\"binary string\":\"\\u0000asdf\\n\",\"int64\":10}");
+    }
+
+    SECTION("issue #111 - subsequent unicode chars")
+    {
+        std::string const bytes{0x7, 0x7};
+        json j;
+        j["string"] = bytes;
+        CHECK(j["string"] == "\u0007\u0007");
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("issue #144 - implicit assignment to std::string fails")
+    {
+        json o = {{"name", "value"}};
+
+        std::string s1 = o["name"];
+        CHECK(s1 == "value");
+
+        std::string s2;
+        s2 = o["name"];
+
+        CHECK(s2 == "value");
+
+        // improve coverage
+        o["int"] = 1;
+#if JSON_DIAGNOSTICS
+        CHECK_THROWS_WITH_AS(s2 = o["int"], "[json.exception.type_error.302] (/int) type must be string, but is number", json::type_error);
+#else
+        CHECK_THROWS_WITH_AS(s2 = o["int"], "[json.exception.type_error.302] type must be string, but is number", json::type_error);
+#endif
+    }
+#endif
+
+    SECTION("issue #146 - character following a surrogate pair is skipped")
+    {
+        CHECK(json::parse("\"\\ud80c\\udc60abc\"").get<json::string_t>() == "\xf0\x93\x81\xa0\x61\x62\x63");
+    }
+
+    SECTION("issue #171 - Cannot index by key of type static constexpr const char*")
+    {
+        json j;
+
+        // Non-const access with key as "char []"
+        char array_key[] = "Key1"; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+        CHECK_NOTHROW(j[array_key] = 1);
+        CHECK(j[array_key] == json(1));
+
+        // Non-const access with key as "const char[]"
+        const char const_array_key[] = "Key2"; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+        CHECK_NOTHROW(j[const_array_key] = 2);
+        CHECK(j[const_array_key] == json(2));
+
+        // Non-const access with key as "char *"
+        char _ptr_key[] = "Key3"; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+        char* ptr_key = &_ptr_key[0]; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        CHECK_NOTHROW(j[ptr_key] = 3);
+        CHECK(j[ptr_key] == json(3));
+
+        // Non-const access with key as "const char *"
+        const char* const_ptr_key = "Key4";
+        CHECK_NOTHROW(j[const_ptr_key] = 4);
+        CHECK(j[const_ptr_key] == json(4));
+
+        // Non-const access with key as "static constexpr const char *"
+        static constexpr const char* constexpr_ptr_key = "Key5";
+        CHECK_NOTHROW(j[constexpr_ptr_key] = 5);
+        CHECK(j[constexpr_ptr_key] == json(5));
+
+        const json j_const = j;
+
+        // Const access with key as "char []"
+        CHECK(j_const[array_key] == json(1));
+
+        // Const access with key as "const char[]"
+        CHECK(j_const[const_array_key] == json(2));
+
+        // Const access with key as "char *"
+        CHECK(j_const[ptr_key] == json(3));
+
+        // Const access with key as "const char *"
+        CHECK(j_const[const_ptr_key] == json(4));
+
+        // Const access with key as "static constexpr const char *"
+        CHECK(j_const[constexpr_ptr_key] == json(5));
+    }
+
+    SECTION("issue #186 miloyip/nativejson-benchmark: floating-point parsing")
+    {
+        json j;
+
+        j = json::parse("-0.0");
+        CHECK(j.get<double>() == -0.0);
+
+        j = json::parse("2.22507385850720113605740979670913197593481954635164564e-308");
+        CHECK(j.get<double>() == 2.2250738585072009e-308);
+
+        j = json::parse("0.999999999999999944488848768742172978818416595458984374");
+        CHECK(j.get<double>() == 0.99999999999999989);
+
+        j = json::parse("1.00000000000000011102230246251565404236316680908203126");
+        CHECK(j.get<double>() == 1.00000000000000022);
+
+        j = json::parse("7205759403792793199999e-5");
+        CHECK(j.get<double>() == 72057594037927928.0);
+
+        j = json::parse("922337203685477529599999e-5");
+        CHECK(j.get<double>() == 9223372036854774784.0);
+
+        j = json::parse("1014120480182583464902367222169599999e-5");
+        CHECK(j.get<double>() == 10141204801825834086073718800384.0);
+
+        j = json::parse("5708990770823839207320493820740630171355185151999e-3");
+        CHECK(j.get<double>() == 5708990770823838890407843763683279797179383808.0);
+
+        // create JSON class with nonstandard float number type
+
+        // float
+        nlohmann::basic_json<std::map, std::vector, std::string, bool, int32_t, uint32_t, float> const j_float =
+            1.23e25f;
+        CHECK(j_float.get<float>() == 1.23e25f);
+
+        // double
+        nlohmann::basic_json<std::map, std::vector, std::string, bool, int64_t, uint64_t, double> const j_double =
+            1.23e35;
+        CHECK(j_double.get<double>() == 1.23e35);
+
+        // long double
+        nlohmann::basic_json<std::map, std::vector, std::string, bool, int64_t, uint64_t, long double>
+        const j_long_double = 1.23e45L;
+        CHECK(j_long_double.get<long double>() == 1.23e45L);
+    }
+
+    SECTION("issue #228 - double values are serialized with commas as decimal points")
+    {
+        json const j1a = 2312.42;
+        json const j1b = json::parse("2312.42");
+
+        json const j2a = 2342e-2;
+        //issue #230
+        //json j2b = json::parse("2342e-2");
+
+        json const j3a = 10E3;
+        json const j3b = json::parse("10E3");
+        json const j3c = json::parse("10e3");
+
+        // class to create a locale that would use a comma for decimals
+        class CommaDecimalSeparator : public std::numpunct<char>
+        {
+          protected:
+            char do_decimal_point() const override
+            {
+                return ',';
+            }
+
+            char do_thousands_sep() const override
+            {
+                return '.';
+            }
+
+            std::string do_grouping() const override
+            {
+                return "\03";
+            }
+        };
+
+        // change locale to mess with decimal points
+        auto orig_locale = std::locale::global(std::locale(std::locale(), new CommaDecimalSeparator));
+
+        CHECK(j1a.dump() == "2312.42");
+        CHECK(j1b.dump() == "2312.42");
+
+        // check if locale is properly reset
+        std::stringstream ss;
+        ss.imbue(std::locale(std::locale(), new CommaDecimalSeparator));
+        ss << 4712.11;
+        CHECK(ss.str() == "4.712,11");
+        ss << j1a;
+        CHECK(ss.str() == "4.712,112312.42");
+        ss << 47.11;
+        CHECK(ss.str() == "4.712,112312.4247,11");
+
+        CHECK(j2a.dump() == "23.42");
+        //issue #230
+        //CHECK(j2b.dump() == "23.42");
+
+        CHECK(j3a.dump() == "10000.0");
+        CHECK(j3b.dump() == "10000.0");
+        CHECK(j3c.dump() == "10000.0");
+        //CHECK(j3b.dump() == "1E04"); // roundtrip error
+        //CHECK(j3c.dump() == "1e04"); // roundtrip error
+
+        std::locale::global(orig_locale);
+    }
+
+    SECTION("issue #378 - locale-independent num-to-str")
+    {
+        static_cast<void>(setlocale(LC_NUMERIC, "de_DE.UTF-8"));
+
+        // verify that dumped correctly with '.' and no grouping
+        const json j1 = 12345.67;
+        CHECK(json(12345.67).dump() == "12345.67");
+        static_cast<void>(setlocale(LC_NUMERIC, "C"));
+    }
+
+    SECTION("issue #379 - locale-independent str-to-num")
+    {
+        static_cast<void>(setlocale(LC_NUMERIC, "de_DE.UTF-8"));
+
+        // verify that parsed correctly despite using strtod internally
+        CHECK(json::parse("3.14").get<double>() == 3.14);
+
+        // check a different code path
+        CHECK(json::parse("1.000000000000000000000000000000000000000000000000000000000000000000000000").get<double>() == 1.0);
+    }
+
+    SECTION("issue #233 - Can't use basic_json::iterator as a base iterator for std::move_iterator")
+    {
+        json source = {"a", "b", "c"};
+        json expected = {"a", "b"};
+        json dest;
+
+        std::copy_n(std::make_move_iterator(source.begin()), 2, std::back_inserter(dest));
+
+        CHECK(dest == expected);
+    }
+
+    SECTION("issue #235 - ambiguous overload for 'push_back' and 'operator+='")
+    {
+        json data = {{"key", "value"}};
+        data.push_back({"key2", "value2"});
+        data += {"key3", "value3"};
+
+        CHECK(data == json({{"key", "value"}, {"key2", "value2"}, {"key3", "value3"}}));
+    }
+
+    SECTION("issue #269 - diff generates incorrect patch when removing multiple array elements")
+    {
+        json const doc = R"( { "arr1": [1, 2, 3, 4] } )"_json;
+        json expected = R"( { "arr1": [1, 2] } )"_json;
+
+        // check roundtrip
+        CHECK(doc.patch(json::diff(doc, expected)) == expected);
+    }
+
+    SECTION("issue #283 - value() does not work with _json_pointer types")
+    {
+        json j =
+        {
+            {"object", {{"key1", 1}, {"key2", 2}}},
+        };
+
+        int at_integer{j.at("/object/key2"_json_pointer)};
+        int val_integer = j.value("/object/key2"_json_pointer, 0);
+
+        CHECK(at_integer == val_integer);
+    }
+
+    SECTION("issue #304 - Unused variable warning")
+    {
+        // code triggered a "warning: unused variable" warning and is left
+        // here to avoid the warning in the future
+        json object;
+        json const patch = json::array();
+        object = object.patch(patch);
+    }
+
+    SECTION("issue #306 - Parsing fails without space at end of file")
+    {
+        for (const auto* filename :
+                {
+                    TEST_DATA_DIRECTORY "/regression/broken_file.json",
+                    TEST_DATA_DIRECTORY "/regression/working_file.json"
+                })
+        {
+            CAPTURE(filename)
+            json j;
+            std::ifstream f(filename);
+            CHECK_NOTHROW(f >> j);
+        }
+    }
+
+    SECTION("issue #310 - make json_benchmarks no longer working in 2.0.4")
+    {
+        for (const auto* filename :
+                {
+                    TEST_DATA_DIRECTORY "/regression/floats.json",
+                    TEST_DATA_DIRECTORY "/regression/signed_ints.json",
+                    TEST_DATA_DIRECTORY "/regression/unsigned_ints.json",
+                    TEST_DATA_DIRECTORY "/regression/small_signed_ints.json"
+                })
+        {
+            CAPTURE(filename)
+            json j;
+            std::ifstream f(filename);
+            CHECK_NOTHROW(f >> j);
+        }
+    }
+
+    SECTION("issue #323 - add nested object capabilities to pointers")
+    {
+        json j;
+        j["/this/that/2"_json_pointer] = 27;
+        CHECK(j == json({{"this", {{"that", {nullptr, nullptr, 27}}}}}));
+    }
+
+    SECTION("issue #329 - serialized value not always can be parsed")
+    {
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::parse("22e2222"), "[json.exception.out_of_range.406] number overflow parsing '22e2222'", json::out_of_range&);
+    }
+
+    SECTION("issue #360 - Loss of precision when serializing <double>")
+    {
+        auto check_roundtrip = [](double number)
+        {
+            CAPTURE(number)
+
+            json j = number;
+            CHECK(j.is_number_float());
+
+            std::stringstream ss;
+            ss << j;
+
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j.is_number_float());
+            CHECK(j.get<json::number_float_t>() == number);
+        };
+
+        check_roundtrip(100000000000.1236);
+        check_roundtrip((std::numeric_limits<json::number_float_t>::max)());
+
+        // Some more numbers which fail to roundtrip when serialized with digits10 significand digits (instead of max_digits10)
+        check_roundtrip(1.541888611948064e-17);
+        check_roundtrip(5.418771028591015e-16);
+        check_roundtrip(9.398685592608595e-15);
+        check_roundtrip(8.826843952762347e-14);
+        check_roundtrip(8.143291313475335e-13);
+        check_roundtrip(4.851328172762508e-12);
+        check_roundtrip(6.677850998084358e-11);
+        check_roundtrip(3.995398518174525e-10);
+        check_roundtrip(1.960452605645124e-9);
+        check_roundtrip(3.551812586302883e-8);
+        check_roundtrip(2.947988411689261e-7);
+        check_roundtrip(8.210166748056192e-6);
+        check_roundtrip(6.104889704266753e-5);
+        check_roundtrip(0.0008629954631330876);
+        check_roundtrip(0.004936993881051611);
+        check_roundtrip(0.08309725102608073);
+        check_roundtrip(0.5210494268499783);
+        check_roundtrip(6.382927930939767);
+        check_roundtrip(59.94947245358671);
+        check_roundtrip(361.0838651266122);
+        check_roundtrip(4678.354596181877);
+        check_roundtrip(61412.17658956043);
+        check_roundtrip(725696.0799057782);
+        check_roundtrip(2811732.583399828);
+        check_roundtrip(30178351.07533605);
+        check_roundtrip(689684880.3235844);
+        check_roundtrip(5714887673.555147);
+        check_roundtrip(84652038821.18808);
+        check_roundtrip(156510583431.7721);
+        check_roundtrip(5938450569021.732);
+        check_roundtrip(83623297654460.33);
+        check_roundtrip(701466573254773.6);
+        check_roundtrip(1369013370304513);
+        check_roundtrip(96963648023094720); // NOLINT(bugprone-narrowing-conversions,cppcoreguidelines-narrowing-conversions)
+        check_roundtrip(3.478237409280108e+17);
+    }
+
+    SECTION("issue #366 - json::parse on failed stream gets stuck")
+    {
+        std::ifstream f("file_not_found.json");
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::parse(f), "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+    }
+
+    SECTION("issue #367 - calling stream at EOF")
+    {
+        std::stringstream ss;
+        json j;
+        ss << "123";
+        CHECK_NOTHROW(ss >> j);
+
+        // see https://github.com/nlohmann/json/issues/367#issuecomment-262841893:
+        // ss is not at EOF; this yielded an error before the fix
+        // (threw basic_string::append). No, it should just throw
+        // a parse error because of the EOF.
+        CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+    }
+
+    SECTION("issue #367 - behavior of operator>> should more closely resemble that of built-in overloads")
+    {
+        SECTION("(empty)")
+        {
+            std::stringstream ss;
+            json j;
+            CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+        }
+
+        SECTION("(whitespace)")
+        {
+            std::stringstream ss;
+            ss << "   ";
+            json j;
+            CHECK_THROWS_WITH_AS(ss >> j,
+                                 "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+        }
+
+        SECTION("one value")
+        {
+            std::stringstream ss;
+            ss << "111";
+            json j;
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == 111);
+
+            CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+        }
+
+        SECTION("one value + whitespace")
+        {
+            std::stringstream ss;
+            ss << "222 \t\n";
+            json j;
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == 222);
+
+            CHECK_THROWS_WITH_AS(ss >> j,
+                                 "[json.exception.parse_error.101] parse error at line 2, column 1: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
+        }
+
+        SECTION("whitespace + one value")
+        {
+            std::stringstream ss;
+            ss << "\n\t 333";
+            json j;
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == 333);
+
+            CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+        }
+
+        SECTION("three values")
+        {
+            std::stringstream ss;
+            ss << " 111 \n222\n \n  333";
+            json j;
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == 111);
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == 222);
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == 333);
+
+            CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+        }
+
+        SECTION("literals without whitespace")
+        {
+            std::stringstream ss;
+            ss << "truefalsenull\"\"";
+            json j;
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == true);
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == false);
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == nullptr);
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == "");
+
+            CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+        }
+
+        SECTION("example from #529")
+        {
+            std::stringstream ss;
+            ss << "{\n    \"one\"   : 1,\n    \"two\"   : 2\n}\n{\n    \"three\" : 3\n}";
+            json j;
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == json({{"one", 1}, {"two", 2}}));
+            CHECK_NOTHROW(ss >> j);
+            CHECK(j == json({{"three", 3}}));
+
+            CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON", json::parse_error&);
+        }
+
+        SECTION("second example from #529")
+        {
+            std::string const str = "{\n\"one\"   : 1,\n\"two\"   : 2\n}\n{\n\"three\" : 3\n}";
+
+            {
+                std::ofstream file("test.json");
+                file << str;
+            }
+
+            std::ifstream stream("test.json", std::ifstream::in);
+            json val;
+
+            size_t i = 0;
+            while (stream.peek() != EOF)
+            {
+                CAPTURE(i)
+                CHECK_NOTHROW(stream >> val);
+
+                CHECK(i < 2);
+
+                if (i == 0)
+                {
+                    CHECK(val == json({{"one", 1}, {"two", 2}}));
+                }
+
+                if (i == 1)
+                {
+                    CHECK(val == json({{"three", 3}}));
+                }
+
+                ++i;
+            }
+
+            static_cast<void>(std::remove("test.json"));
+        }
+    }
+
+    SECTION("issue #389 - Integer-overflow (OSS-Fuzz issue 267)")
+    {
+        // original test case
+        json const j1 = json::parse("-9223372036854775808");
+        CHECK(j1.is_number_integer());
+        CHECK(j1.get<json::number_integer_t>() == (std::numeric_limits<std::int64_t>::min)());
+
+        // edge case (+1; still an integer)
+        json const j2 = json::parse("-9223372036854775807");
+        CHECK(j2.is_number_integer());
+        CHECK(j2.get<json::number_integer_t>() == (std::numeric_limits<std::int64_t>::min)() + 1);
+
+        // edge case (-1; overflow -> floats)
+        json const j3 = json::parse("-9223372036854775809");
+        CHECK(j3.is_number_float());
+    }
+
+    SECTION("issue #380 - bug in overflow detection when parsing integers")
+    {
+        json const j = json::parse("166020696663385964490");
+        CHECK(j.is_number_float());
+        CHECK(j.get<json::number_float_t>() == 166020696663385964490.0);
+    }
+
+    SECTION("issue #405 - Heap-buffer-overflow (OSS-Fuzz issue 342)")
+    {
+        // original test case
+        std::vector<uint8_t> const vec {0x65, 0xf5, 0x0a, 0x48, 0x21};
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec), "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+    }
+
+    SECTION("issue #407 - Heap-buffer-overflow (OSS-Fuzz issue 343)")
+    {
+        json _;
+
+        // original test case: incomplete float64
+        std::vector<uint8_t> const vec1 {0xcb, 0x8f, 0x0a};
+        CHECK_THROWS_WITH_AS(_ = json::from_msgpack(vec1), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+
+        // related test case: incomplete float32
+        std::vector<uint8_t> const vec2 {0xca, 0x8f, 0x0a};
+        CHECK_THROWS_WITH_AS(_ = json::from_msgpack(vec2), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing MessagePack number: unexpected end of input", json::parse_error&);
+
+        // related test case: incomplete Half-Precision Float (CBOR)
+        std::vector<uint8_t> const vec3 {0xf9, 0x8f};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec3), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+
+        // related test case: incomplete Single-Precision Float (CBOR)
+        std::vector<uint8_t> const vec4 {0xfa, 0x8f, 0x0a};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec4), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+
+        // related test case: incomplete Double-Precision Float (CBOR)
+        std::vector<uint8_t> const vec5 {0xfb, 0x8f, 0x0a};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec5), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing CBOR number: unexpected end of input", json::parse_error&);
+    }
+
+    SECTION("issue #408 - Heap-buffer-overflow (OSS-Fuzz issue 344)")
+    {
+        json _;
+
+        // original test case
+        std::vector<uint8_t> const vec1 {0x87};
+        CHECK_THROWS_WITH_AS(_ = json::from_msgpack(vec1), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
+
+        // more test cases for MessagePack
+        for (auto b :
+                {
+                    0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, // fixmap
+                    0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, // fixarray
+                    0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, // fixstr
+                    0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf
+                })
+        {
+            std::vector<uint8_t> const vec(1, static_cast<uint8_t>(b));
+            CHECK_THROWS_AS(_ = json::from_msgpack(vec), json::parse_error&);
+        }
+
+        // more test cases for CBOR
+        for (auto b :
+                {
+                    0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+                    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, // UTF-8 string
+                    0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+                    0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, // array
+                    0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
+                    0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7 // map
+                })
+        {
+            std::vector<uint8_t> const vec(1, static_cast<uint8_t>(b));
+            CHECK_THROWS_AS(_ = json::from_cbor(vec), json::parse_error&);
+        }
+
+        // special case: empty input
+        std::vector<uint8_t> const vec2;
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec2), "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing CBOR value: unexpected end of input", json::parse_error&);
+        CHECK_THROWS_WITH_AS(_ = json::from_msgpack(vec2), "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing MessagePack value: unexpected end of input", json::parse_error&);
+    }
+
+    SECTION("issue #411 - Heap-buffer-overflow (OSS-Fuzz issue 366)")
+    {
+        json _;
+
+        // original test case: empty UTF-8 string (indefinite length)
+        std::vector<uint8_t> const vec1 {0x7f};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec1), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+
+        // related test case: empty array (indefinite length)
+        std::vector<uint8_t> const vec2 {0x9f};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec2), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR value: unexpected end of input", json::parse_error&);
+
+        // related test case: empty map (indefinite length)
+        std::vector<uint8_t> const vec3 {0xbf};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec3), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+    }
+
+    SECTION("issue #412 - Heap-buffer-overflow (OSS-Fuzz issue 367)")
+    {
+        // original test case
+        std::vector<uint8_t> const vec
+        {
+            0xab, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98,
+            0x98, 0x98, 0x98, 0x98, 0x98, 0x00, 0x00, 0x00,
+            0x60, 0xab, 0x98, 0x98, 0x98, 0x98, 0x98, 0x98,
+            0x98, 0x98, 0x98, 0x98, 0x98, 0x00, 0x00, 0x00,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0xa0, 0x9f,
+            0x9f, 0x97, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60,
+            0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60
+        };
+
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x98", json::parse_error&);
+
+        // related test case: nonempty UTF-8 string (indefinite length)
+        std::vector<uint8_t> const vec1 {0x7f, 0x61, 0x61};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec1), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+
+        // related test case: nonempty array (indefinite length)
+        std::vector<uint8_t> const vec2 {0x9f, 0x01};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec2), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing CBOR value: unexpected end of input", json::parse_error&);
+
+        // related test case: nonempty map (indefinite length)
+        std::vector<uint8_t> const vec3 {0xbf, 0x61, 0x61, 0x01};
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec3), "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
+    }
+
+    SECTION("issue #414 - compare with literal 0)")
+    {
+#define CHECK_TYPE(v) \
+    CHECK((json(v) == (v)));\
+    CHECK(((v) == json(v)));\
+    CHECK_FALSE((json(v) != (v)));\
+    CHECK_FALSE(((v) != json(v)));
+
+        CHECK_TYPE(nullptr)
+        CHECK_TYPE(0)
+        CHECK_TYPE(0u)
+        CHECK_TYPE(0L)
+        CHECK_TYPE(0.0)
+        CHECK_TYPE("") // NOLINT(readability-container-size-empty)
+
+#undef CHECK_TYPE
+    }
+
+    SECTION("issue #416 - Use-of-uninitialized-value (OSS-Fuzz issue 377)")
+    {
+        // original test case
+        std::vector<uint8_t> const vec1
+        {
+            0x94, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa,
+            0x3a, 0x96, 0x96, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4,
+            0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0x71,
+            0xb4, 0xb4, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0x3a,
+            0x96, 0x96, 0xb4, 0xb4, 0xfa, 0x94, 0x94, 0x61,
+            0x61, 0x61, 0x61, 0x61, 0x61, 0x61, 0x61, 0xfa
+        };
+
+        json _;
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec1), "[json.exception.parse_error.113] parse error at byte 13: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xB4", json::parse_error&);
+
+        // related test case: double-precision
+        std::vector<uint8_t> const vec2
+        {
+            0x94, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa,
+            0x3a, 0x96, 0x96, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4,
+            0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0xb4, 0x71,
+            0xb4, 0xb4, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0x3a,
+            0x96, 0x96, 0xb4, 0xb4, 0xfa, 0x94, 0x94, 0x61,
+            0x61, 0x61, 0x61, 0x61, 0x61, 0x61, 0x61, 0xfb
+        };
+        CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec2), "[json.exception.parse_error.113] parse error at byte 13: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xB4", json::parse_error&);
+    }
+
+    SECTION("issue #452 - Heap-buffer-overflow (OSS-Fuzz issue 585)")
+    {
+        std::vector<uint8_t> const vec = {'-', '0', '1', '2', '2', '7', '4'};
+        json _;
+        CHECK_THROWS_AS(_ = json::parse(vec), json::parse_error&);
+    }
+
+    SECTION("issue #454 - doubles are printed as integers")
+    {
+        json j = R"({"bool_value":true,"double_value":2.0,"int_value":10,"level1":{"list_value":[3,"hi",false],"tmp":5.0},"string_value":"hello"})"_json;
+        CHECK(j["double_value"].is_number_float());
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("issue #464 - VS2017 implicit to std::string conversion fix")
+    {
+        json v = "test";
+        std::string test;
+        test = v;
+        CHECK(v == "test");
+    }
+#endif
+
+    SECTION("issue #465 - roundtrip error while parsing 1000000000000000010E5")
+    {
+        json const j1 = json::parse("1000000000000000010E5");
+        std::string s1 = j1.dump();
+        json const j2 = json::parse(s1);
+        std::string s2 = j2.dump();
+        CHECK(s1 == s2);
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("issue #473 - inconsistent behavior in conversion to array type")
+    {
+        json const j_array = {1, 2, 3, 4};
+        json const j_number = 42;
+        json const j_null = nullptr;
+
+        SECTION("std::vector")
+        {
+            auto create = [](const json & j)
+            {
+                std::vector<int> const v = j;
+            };
+
+            CHECK_NOTHROW(create(j_array));
+            CHECK_THROWS_WITH_AS(create(j_number), "[json.exception.type_error.302] type must be array, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(create(j_null), "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+        }
+
+        SECTION("std::list")
+        {
+            auto create = [](const json & j)
+            {
+                std::list<int> const v = j;
+            };
+
+            CHECK_NOTHROW(create(j_array));
+            CHECK_THROWS_WITH_AS(create(j_number), "[json.exception.type_error.302] type must be array, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(create(j_null), "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+        }
+
+        SECTION("std::forward_list")
+        {
+            auto create = [](const json & j)
+            {
+                std::forward_list<int> const v = j;
+            };
+
+            CHECK_NOTHROW(create(j_array));
+            CHECK_THROWS_WITH_AS(create(j_number), "[json.exception.type_error.302] type must be array, but is number", json::type_error&);
+            CHECK_THROWS_WITH_AS(create(j_null), "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+        }
+    }
+#endif
+
+    SECTION("issue #486 - json::value_t can't be a map's key type in VC++ 2015")
+    {
+        // the code below must compile with MSVC
+        std::map<json::value_t, std::string> jsonTypes ;
+        jsonTypes[json::value_t::array] = "array";
+    }
+
+    SECTION("issue #494 - conversion from vector<bool> to json fails to build")
+    {
+        std::vector<bool> const boolVector = {false, true, false, false};
+        json j;
+        j["bool_vector"] = boolVector;
+
+        CHECK(j["bool_vector"].dump() == "[false,true,false,false]");
+    }
+
+    SECTION("issue #504 - assertion error (OSS-Fuzz 856)")
+    {
+        std::vector<uint8_t> const vec1 = {0xf9, 0xff, 0xff, 0x4a, 0x3a, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x37, 0x02, 0x38};
+        json const j1 = json::from_cbor(vec1, false);
+
+        // step 2: round trip
+        std::vector<uint8_t> vec2 = json::to_cbor(j1);
+
+        // parse serialization
+        json const j2 = json::from_cbor(vec2);
+
+        // NaN is dumped to "null"
+        CHECK(j2.is_number_float());
+        CHECK(std::isnan(j2.get<json::number_float_t>()));
+        CHECK(j2.dump() == "null");
+
+        // check if serializations match
+        CHECK(json::to_cbor(j2) == vec2);
+    }
+
+    SECTION("issue #512 - use of overloaded operator '<=' is ambiguous")
+    {
+        json j;
+        j["a"] = 5;
+
+        // json op scalar
+        CHECK(j["a"] == 5);
+        CHECK(j["a"] != 4);
+
+        CHECK(j["a"] <= 7);
+        CHECK(j["a"] <  7);
+        CHECK(j["a"] >= 3);
+        CHECK(j["a"] >  3);
+
+        CHECK(!(j["a"] <= 4));
+        CHECK(!(j["a"] <  4));
+        CHECK(!(j["a"] >= 6));
+        CHECK(!(j["a"] >  6));
+
+        // scalar op json
+        CHECK(5 == j["a"]);
+        CHECK(4 != j["a"]);
+
+        CHECK(7 >= j["a"]);
+        CHECK(7 >  j["a"]);
+        CHECK(3 <= j["a"]);
+        CHECK(3 <  j["a"]);
+
+        CHECK(!(4 >= j["a"]));
+        CHECK(!(4 >  j["a"]));
+        CHECK(!(6 <= j["a"]));
+        CHECK(!(6 <  j["a"]));
+    }
+
+    SECTION("issue #575 - heap-buffer-overflow (OSS-Fuzz 1400)")
+    {
+        json _;
+        std::vector<uint8_t> const vec = {'"', '\\', '"', 'X', '"', '"'};
+        CHECK_THROWS_AS(_ = json::parse(vec), json::parse_error&);
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("issue #600 - how does one convert a map in Json back to std::map?")
+    {
+        SECTION("example 1")
+        {
+            // create a map
+            std::map<std::string, int> m1 {{"key", 1}};
+
+            // create and print a JSON from the map
+            json const j = m1;
+
+            // get the map out of JSON
+            std::map<std::string, int> m2 = j;
+
+            // make sure the roundtrip succeeds
+            CHECK(m1 == m2);
+        }
+
+        SECTION("example 2")
+        {
+            // create a map
+            std::map<std::string, std::string> m1 {{"key", "val"}};
+
+            // create and print a JSON from the map
+            json const j = m1;
+
+            // get the map out of JSON
+            std::map<std::string, std::string> m2 = j;
+
+            // make sure the roundtrip succeeds
+            CHECK(m1 == m2);
+        }
+    }
+#endif
+
+    SECTION("issue #602 - BOM not skipped when using json:parse(iterator)")
+    {
+        std::string i = "\xef\xbb\xbf{\n   \"foo\": true\n}";
+        json _;
+        CHECK_NOTHROW(_ = json::parse(i.begin(), i.end()));
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("issue #702 - conversion from valarray<double> to json fails to build")
+    {
+        SECTION("original example")
+        {
+            std::valarray<double> const v;
+            nlohmann::json j;
+            j["test"] = v;
+        }
+
+        SECTION("full example")
+        {
+            std::valarray<double> v = {1.2, 2.3, 3.4, 4.5};
+            json j = v;
+            std::valarray<double> vj = j;
+
+            CHECK(j == json(vj));
+            CHECK(v.size() == vj.size());
+            for (size_t i = 0; i < v.size(); ++i)
+            {
+                CHECK(v[i] == vj[i]);
+                CHECK(v[i] == j[i]);
+            }
+
+            CHECK_THROWS_WITH_AS(json().get<std::valarray<double>>(), "[json.exception.type_error.302] type must be array, but is null", json::type_error&);
+        }
+    }
+#endif
+
+    SECTION("issue #367 - Behavior of operator>> should more closely resemble that of built-in overloads.")
+    {
+        SECTION("example 1")
+        {
+            std::istringstream i1_2_3( R"({"first": "one" }{"second": "two"}3)" );
+            json j1;
+            json j2;
+            json j3;
+            i1_2_3 >> j1;
+            i1_2_3 >> j2;
+            i1_2_3 >> j3;
+
+            auto m1 = j1.get<std::map<std::string, std::string>>();
+            auto m2 = j2.get<std::map<std::string, std::string>>();
+            int i3{j3};
+
+            CHECK( m1 == ( std::map<std::string, std::string> {{ "first",  "one" }} ));
+            CHECK( m2 == ( std::map<std::string, std::string> {{ "second", "two" }} ));
+            CHECK( i3 == 3 );
+        }
+    }
+
+    SECTION("issue #714 - throw std::ios_base::failure exception when failbit set to true")
+    {
+        {
+            std::ifstream is;
+            is.exceptions(
+                is.exceptions()
+                | std::ios_base::failbit
+                | std::ios_base::badbit
+            ); // handle different exceptions as 'file not found', 'permission denied'
+
+            is.open(TEST_DATA_DIRECTORY "/regression/working_file.json");
+            json _;
+            CHECK_NOTHROW(_ = nlohmann::json::parse(is));
+        }
+
+        {
+            std::ifstream is;
+            is.exceptions(
+                is.exceptions()
+                | std::ios_base::failbit
+                | std::ios_base::badbit
+            ); // handle different exceptions as 'file not found', 'permission denied'
+
+            is.open(TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json.cbor",
+                    std::ios_base::in | std::ios_base::binary);
+            json _;
+            CHECK_NOTHROW(_ = nlohmann::json::from_cbor(is));
+        }
+    }
+
+    SECTION("issue #805 - copy constructor is used with std::initializer_list constructor.")
+    {
+        nocopy n;
+        json j;
+        j = {{"nocopy", n}};
+        CHECK(j["nocopy"]["val"] == 0);
+    }
+
+    SECTION("issue #838 - incorrect parse error with binary data in keys")
+    {
+        std::array<uint8_t, 28> key1 = {{ 103, 92, 117, 48, 48, 48, 55, 92, 114, 215, 126, 214, 95, 92, 34, 174, 40, 71, 38, 174, 40, 71, 38, 223, 134, 247, 127, 0 }};
+        std::string const key1_str(reinterpret_cast<char*>(key1.data()));
+        json const j = key1_str;
+        CHECK_THROWS_WITH_AS(j.dump(), "[json.exception.type_error.316] invalid UTF-8 byte at index 10: 0x7E", json::type_error&);
+    }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("issue #843 - converting to array not working")
+    {
+        json j;
+        std::array<int, 4> ar = {{1, 1, 1, 1}};
+        j = ar;
+        ar = j;
+    }
+#endif
+
+    SECTION("issue #894 - invalid RFC6902 copy operation succeeds")
+    {
+        auto model = R"({
+            "one": {
+                "two": {
+                    "three": "hello",
+                    "four": 42
+                }
+            }
+        })"_json;
+
+        auto p1 = R"([{"op": "move",
+                       "from": "/one/two/three",
+                       "path": "/a/b/c"}])"_json;
+        CHECK_THROWS_WITH_AS(model.patch(p1),
+                             "[json.exception.out_of_range.403] key 'a' not found", json::out_of_range&);
+
+        auto p2 = R"([{"op": "copy",
+                       "from": "/one/two/three",
+                       "path": "/a/b/c"}])"_json;
+        CHECK_THROWS_WITH_AS(model.patch(p2),
+                             "[json.exception.out_of_range.403] key 'a' not found", json::out_of_range&);
+    }
+
+    SECTION("issue #961 - incorrect parsing of indefinite length CBOR strings")
+    {
+        std::vector<uint8_t> const v_cbor =
+        {
+            0x7F,
+            0x64,
+            'a', 'b', 'c', 'd',
+            0x63,
+            '1', '2', '3',
+            0xFF
+        };
+        json j = json::from_cbor(v_cbor);
+        CHECK(j == "abcd123");
+    }
+
+    SECTION("issue #962 - Timeout (OSS-Fuzz 6034)")
+    {
+        json _;
+        std::vector<uint8_t> v_ubjson = {'[', '$', 'Z', '#', 'L', 0x78, 0x28, 0x00, 0x68, 0x28, 0x69, 0x69, 0x17};
+        CHECK_THROWS_AS(_ = json::from_ubjson(v_ubjson), json::out_of_range&);
+        //CHECK_THROWS_WITH(json::from_ubjson(v_ubjson),
+        //                  "[json.exception.out_of_range.408] excessive array size: 8658170730974374167");
+
+        v_ubjson[0] = '{';
+        CHECK_THROWS_AS(_ = json::from_ubjson(v_ubjson), json::out_of_range&);
+        //CHECK_THROWS_WITH(json::from_ubjson(v_ubjson),
+        //                  "[json.exception.out_of_range.408] excessive object size: 8658170730974374167");
+    }
+
+    SECTION("issue #971 - Add a SAX parser - late bug")
+    {
+        // a JSON text
+        const auto* text = R"(
+    {
+        "Image": {
+            "Width":  800,
+            "Height": 600,
+            "Title":  "View from 15th Floor",
+            "Thumbnail": {
+                "Url":    "http://www.example.com/image/481989943",
+                "Height": 125,
+                "Width":  100
+            },
+            "Animated" : false,
+            "IDs": [116, 943, 234, 38793]
+        }
+    }
+    )";
+
+        // define parser callback
+        json::parser_callback_t const cb = [](int /*depth*/, json::parse_event_t event, json & parsed)
+        {
+            // skip object elements with key "Thumbnail"
+            return !(event == json::parse_event_t::key && parsed == json("Thumbnail"));
+        };
+
+        // parse (with callback) and serialize JSON
+        json j_filtered = json::parse(text, cb);
+
+        CHECK(j_filtered == R"({"Image":{"Animated":false,"Height":600,"IDs":[116,943,234,38793], "Title":"View from 15th Floor","Width":800}})"_json);
+    }
+
+    SECTION("issue #972 - Segmentation fault on G++ when trying to assign json string literal to custom json type")
+    {
+        my_json const foo = R"([1, 2, 3])"_json;
+    }
+
+    SECTION("issue #977 - Assigning between different json types")
+    {
+        foo_json lj = ns::foo{3};
+        ns::foo ff(lj);
+        CHECK(lj.is_object());
+        CHECK(lj.size() == 1);
+        CHECK(lj["x"] == 3);
+        CHECK(ff.x == 3);
+        nlohmann::json const nj = lj;                // This line works as expected
+    }
+}
+
+#if !defined(JSON_NOEXCEPTION)
+TEST_CASE("regression tests, exceptions dependent")
+{
+    SECTION("issue #1340 - eof not set on exhausted input stream")
+    {
+        std::stringstream s("{}{}");
+        json j;
+        s >> j;
+        s >> j;
+        CHECK_THROWS_AS(s >> j, json::parse_error const&);
+        CHECK(s.eof());
+    }
+}
+#endif
+
+/////////////////////////////////////////////////////////////////////
+// for #1642
+/////////////////////////////////////////////////////////////////////
+
+// the code below fails with Clang on Windows, so we need to exclude it there
+#if DOCTEST_CLANG && (defined(WIN32) || defined(_WIN32) || defined(__WIN32) && !defined(__CYGWIN__))
+#else
+template <typename T> class array {};
+template <typename T> class object {};
+template <typename T> class string {};
+template <typename T> class number_integer {};
+template <typename T> class number_unsigned {};
+template <typename T> class number_float {};
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-regression2.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-regression2.cpp
new file mode 100644
index 00000000..88a64a7b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-regression2.cpp
@@ -0,0 +1,1000 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+// cmake/test.cmake selects the C++ standard versions with which to build a
+// unit test based on the presence of JSON_HAS_CPP_<VERSION> macros.
+// When using macros that are only defined for particular versions of the standard
+// (e.g., JSON_HAS_FILESYSTEM for C++17 and up), please mention the corresponding
+// version macro in a comment close by, like this:
+// JSON_HAS_CPP_<VERSION> (do not remove; see note at top of file)
+
+#include "doctest_compatibility.h"
+
+// for some reason including this after the json header leads to linker errors with VS 2017...
+#include <locale>
+
+#define JSON_TESTS_PRIVATE
+#include <nlohmann/json.hpp>
+using json = nlohmann::json;
+using ordered_json = nlohmann::ordered_json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <cstdio>
+#include <list>
+#include <type_traits>
+#include <utility>
+
+#ifdef JSON_HAS_CPP_17
+    #include <any>
+    #include <variant>
+#endif
+
+#ifdef JSON_HAS_CPP_20
+    #if __has_include(<span>)
+        #include <span>
+    #endif
+#endif
+
+// NLOHMANN_JSON_SERIALIZE_ENUM uses a static std::pair
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors")
+
+/////////////////////////////////////////////////////////////////////
+// for #1021
+/////////////////////////////////////////////////////////////////////
+
+using float_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, float>;
+
+/////////////////////////////////////////////////////////////////////
+// for #1647
+/////////////////////////////////////////////////////////////////////
+namespace
+{
+struct NonDefaultFromJsonStruct
+{};
+
+inline bool operator==(NonDefaultFromJsonStruct const& /*unused*/, NonDefaultFromJsonStruct const& /*unused*/)
+{
+    return true;
+}
+
+enum class for_1647
+{
+    one,
+    two
+};
+
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays): this is a false positive
+NLOHMANN_JSON_SERIALIZE_ENUM(for_1647,
+{
+    {for_1647::one, "one"},
+    {for_1647::two, "two"},
+})
+}  // namespace
+
+/////////////////////////////////////////////////////////////////////
+// for #1299
+/////////////////////////////////////////////////////////////////////
+
+struct Data
+{
+    Data() = default;
+    Data(std::string a_, std::string b_)
+        : a(std::move(a_))
+        , b(std::move(b_))
+    {}
+    std::string a{}; // NOLINT(readability-redundant-member-init)
+    std::string b{}; // NOLINT(readability-redundant-member-init)
+};
+
+void from_json(const json& j, Data& data); // NOLINT(misc-use-internal-linkage)
+void from_json(const json& j, Data& data)
+{
+    j["a"].get_to(data.a);
+    j["b"].get_to(data.b);
+}
+
+bool operator==(Data const& lhs, Data const& rhs); // NOLINT(misc-use-internal-linkage)
+bool operator==(Data const& lhs, Data const& rhs)
+{
+    return lhs.a == rhs.a && lhs.b == rhs.b;
+}
+
+//bool operator!=(Data const& lhs, Data const& rhs)
+//{
+//    return !(lhs == rhs);
+//}
+
+namespace nlohmann
+{
+template<>
+struct adl_serializer<NonDefaultFromJsonStruct>
+{
+    static NonDefaultFromJsonStruct from_json(json const& /*unused*/) noexcept
+    {
+        return {};
+    }
+};
+}  // namespace nlohmann
+
+/////////////////////////////////////////////////////////////////////
+// for #1805
+/////////////////////////////////////////////////////////////////////
+
+struct NotSerializableData
+{
+    int mydata;
+    float myfloat;
+};
+
+/////////////////////////////////////////////////////////////////////
+// for #2574
+/////////////////////////////////////////////////////////////////////
+
+struct NonDefaultConstructible
+{
+    explicit NonDefaultConstructible(int a)
+        : x(a)
+    {}
+    int x;
+};
+
+namespace nlohmann
+{
+template<>
+struct adl_serializer<NonDefaultConstructible>
+{
+    static NonDefaultConstructible from_json(json const& j)
+    {
+        return NonDefaultConstructible(j.get<int>());
+    }
+};
+}  // namespace nlohmann
+
+/////////////////////////////////////////////////////////////////////
+// for #2824
+/////////////////////////////////////////////////////////////////////
+
+class sax_no_exception : public nlohmann::detail::json_sax_dom_parser<json, nlohmann::detail::string_input_adapter_type>
+{
+  public:
+    explicit sax_no_exception(json& j)
+        : nlohmann::detail::json_sax_dom_parser<json, nlohmann::detail::string_input_adapter_type>(j, false)
+    {}
+
+    static bool parse_error(std::size_t /*position*/, const std::string& /*last_token*/, const json::exception& ex)
+    {
+        error_string = new std::string(ex.what());  // NOLINT(cppcoreguidelines-owning-memory)
+        return false;
+    }
+
+    static std::string* error_string;
+};
+
+std::string* sax_no_exception::error_string = nullptr;
+
+/////////////////////////////////////////////////////////////////////
+// for #2982
+/////////////////////////////////////////////////////////////////////
+
+template<class T>
+class my_allocator : public std::allocator<T>
+{
+  public:
+    using std::allocator<T>::allocator;
+
+    my_allocator() = default;
+    template<class U> my_allocator(const my_allocator<U>& /*unused*/) { }
+
+    template <class U>
+    struct rebind
+    {
+        using other = my_allocator<U>;
+    };
+};
+
+/////////////////////////////////////////////////////////////////////
+// for #3077
+/////////////////////////////////////////////////////////////////////
+
+class FooAlloc
+{};
+
+class Foo
+{
+  public:
+    explicit Foo(const FooAlloc& /* unused */ = FooAlloc()) {}
+
+    bool value = false;
+};
+
+class FooBar
+{
+  public:
+    Foo foo{}; // NOLINT(readability-redundant-member-init)
+};
+
+inline void from_json(const nlohmann::json& j, FooBar& fb) // NOLINT(misc-use-internal-linkage)
+{
+    j.at("value").get_to(fb.foo.value);
+}
+
+/////////////////////////////////////////////////////////////////////
+// for #3171
+/////////////////////////////////////////////////////////////////////
+
+struct for_3171_base // NOLINT(cppcoreguidelines-special-member-functions)
+{
+    for_3171_base(const std::string& /*unused*/ = {}) {}
+    virtual ~for_3171_base();
+
+    for_3171_base(const for_3171_base& other) // NOLINT(hicpp-use-equals-default,modernize-use-equals-default)
+        : str(other.str)
+    {}
+
+    for_3171_base& operator=(const for_3171_base& other)
+    {
+        if (this != &other)
+        {
+            str = other.str;
+        }
+        return *this;
+    }
+
+    for_3171_base(for_3171_base&& other) noexcept
+        : str(std::move(other.str))
+    {}
+
+    for_3171_base& operator=(for_3171_base&& other) noexcept
+    {
+        if (this != &other)
+        {
+            str = std::move(other.str);
+        }
+        return *this;
+    }
+
+    virtual void _from_json(const json& j)
+    {
+        j.at("str").get_to(str);
+    }
+
+    std::string str{}; // NOLINT(readability-redundant-member-init)
+};
+
+for_3171_base::~for_3171_base() = default;
+
+struct for_3171_derived : public for_3171_base
+{
+    for_3171_derived() = default;
+    ~for_3171_derived() override;
+    explicit for_3171_derived(const std::string& /*unused*/) { }
+
+    for_3171_derived(const for_3171_derived& other) // NOLINT(hicpp-use-equals-default,modernize-use-equals-default)
+        : for_3171_base(other)
+    {}
+
+    for_3171_derived& operator=(const for_3171_derived& other)
+    {
+        if (this != &other)
+        {
+            for_3171_base::operator=(other); // Call base class assignment operator
+        }
+        return *this;
+    }
+
+    for_3171_derived(for_3171_derived&& other) noexcept
+        : for_3171_base(std::move(other))
+    {}
+
+    for_3171_derived& operator=(for_3171_derived&& other) noexcept
+    {
+        if (this != &other)
+        {
+            for_3171_base::operator=(std::move(other)); // Call base class move assignment operator
+        }
+        return *this;
+    }
+};
+
+for_3171_derived::~for_3171_derived() = default;
+
+inline void from_json(const json& j, for_3171_base& tb) // NOLINT(misc-use-internal-linkage)
+{
+    tb._from_json(j);
+}
+
+/////////////////////////////////////////////////////////////////////
+// for #3312
+/////////////////////////////////////////////////////////////////////
+
+#ifdef JSON_HAS_CPP_20
+struct for_3312
+{
+    std::string name;
+};
+
+inline void from_json(const json& j, for_3312& obj) // NOLINT(misc-use-internal-linkage)
+{
+    j.at("name").get_to(obj.name);
+}
+#endif
+
+/////////////////////////////////////////////////////////////////////
+// for #3204
+/////////////////////////////////////////////////////////////////////
+
+struct for_3204_foo
+{
+    for_3204_foo() = default;
+    explicit for_3204_foo(std::string /*unused*/) {} // NOLINT(performance-unnecessary-value-param)
+};
+
+struct for_3204_bar
+{
+    enum constructed_from_t
+    {
+        constructed_from_none = 0,
+        constructed_from_foo = 1,
+        constructed_from_json = 2
+    };
+
+    explicit for_3204_bar(std::function<void(for_3204_foo)> /*unused*/) noexcept // NOLINT(performance-unnecessary-value-param)
+        : constructed_from(constructed_from_foo) {}
+    explicit for_3204_bar(std::function<void(json)> /*unused*/) noexcept // NOLINT(performance-unnecessary-value-param)
+        : constructed_from(constructed_from_json) {}
+
+    constructed_from_t constructed_from = constructed_from_none;
+};
+
+/////////////////////////////////////////////////////////////////////
+// for #3333
+/////////////////////////////////////////////////////////////////////
+
+struct for_3333 final
+{
+    for_3333(int x_ = 0, int y_ = 0) : x(x_), y(y_) {}
+
+    template <class T>
+    for_3333(const T& /*unused*/)
+    {
+        CHECK(false);
+    }
+
+    int x = 0;
+    int y = 0;
+};
+
+template <>
+inline for_3333::for_3333(const json& j)
+    : for_3333(j.value("x", 0), j.value("y", 0))
+{}
+
+TEST_CASE("regression tests 2")
+{
+    SECTION("issue #1001 - Fix memory leak during parser callback")
+    {
+        const auto* geojsonExample = R"(
+          { "type": "FeatureCollection",
+            "features": [
+              { "type": "Feature",
+                "geometry": {"type": "Point", "coordinates": [102.0, 0.5]},
+                "properties": {"prop0": "value0"}
+                },
+              { "type": "Feature",
+                "geometry": {
+                  "type": "LineString",
+                  "coordinates": [
+                    [102.0, 0.0], [103.0, 1.0], [104.0, 0.0], [105.0, 1.0]
+                    ]
+                  },
+                "properties": {
+                  "prop0": "value0",
+                  "prop1": 0.0
+                  }
+                },
+              { "type": "Feature",
+                 "geometry": {
+                   "type": "Polygon",
+                   "coordinates": [
+                     [ [100.0, 0.0], [101.0, 0.0], [101.0, 1.0],
+                       [100.0, 1.0], [100.0, 0.0] ]
+                     ]
+                 },
+                 "properties": {
+                   "prop0": "value0",
+                   "prop1": {"this": "that"}
+                   }
+                 }
+               ]
+             })";
+
+        const json::parser_callback_t cb = [&](int /*level*/, json::parse_event_t event, json & parsed) noexcept
+        {
+            // skip uninteresting events
+            if (event == json::parse_event_t::value && !parsed.is_primitive())
+            {
+                return false;
+            }
+
+            switch (event)
+            {
+                case json::parse_event_t::key:
+                {
+                    return true;
+                }
+                case json::parse_event_t::value:
+                {
+                    return false;
+                }
+                case json::parse_event_t::object_start:
+                {
+                    return true;
+                }
+                case json::parse_event_t::object_end:
+                {
+                    return false;
+                }
+                case json::parse_event_t::array_start:
+                {
+                    return true;
+                }
+                case json::parse_event_t::array_end:
+                {
+                    return false;
+                }
+
+                default:
+                {
+                    return true;
+                }
+            }
+        };
+
+        auto j = json::parse(geojsonExample, cb, true);
+        CHECK(j == json());
+    }
+
+    SECTION("issue #1021 - to/from_msgpack only works with standard typization")
+    {
+        float_json j = 1000.0;
+        CHECK(float_json::from_cbor(float_json::to_cbor(j)) == j);
+        CHECK(float_json::from_msgpack(float_json::to_msgpack(j)) == j);
+        CHECK(float_json::from_ubjson(float_json::to_ubjson(j)) == j);
+
+        float_json j2 = {1000.0, 2000.0, 3000.0};
+        CHECK(float_json::from_ubjson(float_json::to_ubjson(j2, true, true)) == j2);
+    }
+
+    SECTION("issue #1045 - Using STL algorithms with JSON containers with expected results?")
+    {
+        json diffs = nlohmann::json::array();
+        json m1{{"key1", 42}};
+        json m2{{"key2", 42}};
+        auto p1 = m1.items();
+        auto p2 = m2.items();
+
+        using it_type = decltype(p1.begin());
+
+        std::set_difference(
+            p1.begin(),
+            p1.end(),
+            p2.begin(),
+            p2.end(),
+            std::inserter(diffs, diffs.end()),
+            [&](const it_type & e1, const it_type & e2) -> bool
+        {
+            using comper_pair = std::pair<std::string, decltype(e1.value())>;              // Trying to avoid unneeded copy
+            return comper_pair(e1.key(), e1.value()) < comper_pair(e2.key(), e2.value());  // Using pair comper
+        });
+
+        CHECK(diffs.size() == 1);  // Note the change here, was 2
+    }
+
+#ifdef JSON_HAS_CPP_17
+    SECTION("issue #1292 - Serializing std::variant causes stack overflow")
+    {
+        static_assert(!std::is_constructible<json, std::variant<int, float>>::value, "unexpected value");
+    }
+#endif
+
+    SECTION("issue #1299 - compile error in from_json converting to container "
+            "with std::pair")
+    {
+        const json j =
+        {
+            {"1", {{"a", "testa_1"}, {"b", "testb_1"}}},
+            {"2", {{"a", "testa_2"}, {"b", "testb_2"}}},
+            {"3", {{"a", "testa_3"}, {"b", "testb_3"}}},
+        };
+
+        std::map<std::string, Data> expected
+        {
+            {"1", {"testa_1", "testb_1"}},
+            {"2", {"testa_2", "testb_2"}},
+            {"3", {"testa_3", "testb_3"}},
+        };
+        const auto data = j.get<decltype(expected)>();
+        CHECK(expected == data);
+    }
+
+    SECTION("issue #1445 - buffer overflow in dumping invalid utf-8 strings")
+    {
+        SECTION("a bunch of -1, ensure_ascii=true")
+        {
+            const auto length = 300;
+
+            json dump_test;
+            dump_test["1"] = std::string(length, -1);
+
+            std::string expected = R"({"1":")";
+            for (int i = 0; i < length; ++i)
+            {
+                expected += "\\ufffd";
+            }
+            expected += "\"}";
+
+            auto s = dump_test.dump(-1, ' ', true, nlohmann::json::error_handler_t::replace);
+            CHECK(s == expected);
+        }
+        SECTION("a bunch of -2, ensure_ascii=false")
+        {
+            const auto length = 500;
+
+            json dump_test;
+            dump_test["1"] = std::string(length, -2);
+
+            std::string expected = R"({"1":")";
+            for (int i = 0; i < length; ++i)
+            {
+                expected += "\xEF\xBF\xBD";
+            }
+            expected += "\"}";
+
+            auto s = dump_test.dump(-1, ' ', false, nlohmann::json::error_handler_t::replace);
+            CHECK(s == expected);
+        }
+        SECTION("test case in issue #1445")
+        {
+            nlohmann::json dump_test;
+            const std::array<int, 108> data =
+            {
+                {109, 108, 103, 125, -122, -53, 115, 18, 3, 0, 102, 19, 1, 15, -110, 13, -3, -1, -81, 32, 2, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -80, 2, 0, 0, 96, -118, 46, -116, 46, 109, -84, -87, 108, 14, 109, -24, -83, 13, -18, -51, -83, -52, -115, 14, 6, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 3, 0, 0, 0, 35, -74, -73, 55, 57, -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33, 0, 0, 0, -96, -54, -28, -26}
+            };
+            std::string s;
+            for (const int i : data)
+            {
+                s += static_cast<char>(i);
+            }
+            dump_test["1"] = s;
+            dump_test.dump(-1, ' ', true, nlohmann::json::error_handler_t::replace);
+        }
+    }
+
+    SECTION("issue #1447 - Integer Overflow (OSS-Fuzz 12506)")
+    {
+        const json j = json::parse("[-9223372036854775808]");
+        CHECK(j.dump() == "[-9223372036854775808]");
+    }
+
+    SECTION("issue #1708 - minimum value of int64_t can be outputted")
+    {
+        constexpr auto smallest = (std::numeric_limits<int64_t>::min)();
+        const json j = smallest;
+        CHECK(j.dump() == std::to_string(smallest));
+    }
+
+    SECTION("issue #1727 - Contains with non-const lvalue json_pointer picks the wrong overload")
+    {
+        const json j = {{"root", {{"settings", {{"logging", true}}}}}};
+
+        auto jptr1 = "/root/settings/logging"_json_pointer;
+        auto jptr2 = json::json_pointer{"/root/settings/logging"};
+
+        CHECK(j.contains(jptr1));
+        CHECK(j.contains(jptr2));
+    }
+
+    SECTION("issue #1647 - compile error when deserializing enum if both non-default from_json and non-member operator== exists for other type")
+    {
+        // does not compile on ICPC when targeting C++20
+#if !(defined(__INTEL_COMPILER) && __cplusplus >= 202000)
+        {
+            const json j;
+            NonDefaultFromJsonStruct x(j);
+            NonDefaultFromJsonStruct y;
+            CHECK(x == y);
+        }
+#endif
+
+        auto val = nlohmann::json("one").get<for_1647>();
+        CHECK(val == for_1647::one);
+        const json j = val;
+    }
+
+    SECTION("issue #1715 - json::from_cbor does not respect allow_exceptions = false when input is string literal")
+    {
+        SECTION("string literal")
+        {
+            const json cbor = json::from_cbor("B", true, false);
+            CHECK(cbor.is_discarded());
+        }
+
+        SECTION("string array")
+        {
+            const std::array<char, 2> input = {{'B', 0x00}};
+            const json cbor = json::from_cbor(input, true, false);
+            CHECK(cbor.is_discarded());
+        }
+
+        SECTION("std::string")
+        {
+            const json cbor = json::from_cbor(std::string("B"), true, false);
+            CHECK(cbor.is_discarded());
+        }
+    }
+
+    SECTION("issue #1805 - A pair<T1, T2> is json constructible only if T1 and T2 are json constructible")
+    {
+        static_assert(!std::is_constructible<json, std::pair<std::string, NotSerializableData>>::value, "unexpected result");
+        static_assert(!std::is_constructible<json, std::pair<NotSerializableData, std::string>>::value, "unexpected result");
+        static_assert(std::is_constructible<json, std::pair<int, std::string>>::value, "unexpected result");
+    }
+    SECTION("issue #1825 - A tuple<Args..> is json constructible only if all T in Args are json constructible")
+    {
+        static_assert(!std::is_constructible<json, std::tuple<std::string, NotSerializableData>>::value, "unexpected result");
+        static_assert(!std::is_constructible<json, std::tuple<NotSerializableData, std::string>>::value, "unexpected result");
+        static_assert(std::is_constructible<json, std::tuple<int, std::string>>::value, "unexpected result");
+    }
+
+    SECTION("issue #1983 - JSON patch diff for op=add formation is not as per standard (RFC 6902)")
+    {
+        const auto source = R"({ "foo": [ "1", "2" ] })"_json;
+        const auto target = R"({"foo": [ "1", "2", "3" ]})"_json;
+        const auto result = json::diff(source, target);
+        CHECK(result.dump() == R"([{"op":"add","path":"/foo/-","value":"3"}])");
+    }
+
+    SECTION("issue #2067 - cannot serialize binary data to text JSON")
+    {
+        const std::array<unsigned char, 23> data = {{0x81, 0xA4, 0x64, 0x61, 0x74, 0x61, 0xC4, 0x0F, 0x33, 0x30, 0x30, 0x32, 0x33, 0x34, 0x30, 0x31, 0x30, 0x37, 0x30, 0x35, 0x30, 0x31, 0x30}};
+        const json j = json::from_msgpack(data.data(), data.size());
+        CHECK_NOTHROW(
+            j.dump(4,                             // Indent
+                   ' ',                           // Indent char
+                   false,                         // Ensure ascii
+                   json::error_handler_t::strict  // Error
+                  ));
+    }
+
+    SECTION("PR #2181 - regression bug with lvalue")
+    {
+        // see https://github.com/nlohmann/json/pull/2181#issuecomment-653326060
+        const json j{{"x", "test"}};
+        const std::string defval = "default value";
+        auto val = j.value("x", defval); // NOLINT(bugprone-unused-local-non-trivial-variable)
+        auto val2 = j.value("y", defval); // NOLINT(bugprone-unused-local-non-trivial-variable)
+    }
+
+    SECTION("issue #2293 - eof doesn't cause parsing to stop")
+    {
+        const std::vector<uint8_t> data =
+        {
+            0x7B,
+            0x6F,
+            0x62,
+            0x6A,
+            0x65,
+            0x63,
+            0x74,
+            0x20,
+            0x4F,
+            0x42
+        };
+        const json result = json::from_cbor(data, true, false);
+        CHECK(result.is_discarded());
+    }
+
+    SECTION("issue #2315 - json.update and vector<pair>does not work with ordered_json")
+    {
+        nlohmann::ordered_json jsonAnimals = {{"animal", "dog"}};
+        const nlohmann::ordered_json jsonCat = {{"animal", "cat"}};
+        jsonAnimals.update(jsonCat);
+        CHECK(jsonAnimals["animal"] == "cat");
+
+        auto jsonAnimals_parsed = nlohmann::ordered_json::parse(jsonAnimals.dump());
+        CHECK(jsonAnimals == jsonAnimals_parsed);
+
+        const std::vector<std::pair<std::string, int64_t>> intData = {std::make_pair("aaaa", 11),
+                                                                      std::make_pair("bbb", 222)
+                                                                     };
+        nlohmann::ordered_json jsonObj;
+        for (const auto& data : intData)
+        {
+            jsonObj[data.first] = data.second;
+        }
+        CHECK(jsonObj["aaaa"] == 11);
+        CHECK(jsonObj["bbb"] == 222);
+    }
+
+    SECTION("issue #2330 - ignore_comment=true fails on multiple consecutive lines starting with comments")
+    {
+        const std::string ss = "//\n//\n{\n}\n";
+        const json j = json::parse(ss, nullptr, true, true);
+        CHECK(j.dump() == "{}");
+    }
+
+#ifdef JSON_HAS_CPP_20
+#ifndef _LIBCPP_VERSION // see https://github.com/nlohmann/json/issues/4490
+#if __has_include(<span>)
+    SECTION("issue #2546 - parsing containers of std::byte")
+    {
+        const char DATA[] = R"("Hello, world!")"; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+        const auto s = std::as_bytes(std::span(DATA));
+        const json j = json::parse(s);
+        CHECK(j.dump() == "\"Hello, world!\"");
+    }
+#endif
+#endif
+#endif
+
+    SECTION("issue #2574 - Deserialization to std::array, std::pair, and std::tuple with non-default constructable types fails")
+    {
+        SECTION("std::array")
+        {
+            {
+                const json j = {7, 4};
+                auto arr = j.get<std::array<NonDefaultConstructible, 2>>();
+                CHECK(arr[0].x == 7);
+                CHECK(arr[1].x == 4);
+            }
+
+            {
+                const json j = 7;
+                CHECK_THROWS_AS((j.get<std::array<NonDefaultConstructible, 1>>()), json::type_error);
+            }
+        }
+
+        SECTION("std::pair")
+        {
+            {
+                const json j = {3, 8};
+                auto p = j.get<std::pair<NonDefaultConstructible, NonDefaultConstructible>>();
+                CHECK(p.first.x == 3);
+                CHECK(p.second.x == 8);
+            }
+
+            {
+                const json j = {4, 1};
+                auto p = j.get<std::pair<int, NonDefaultConstructible>>();
+                CHECK(p.first == 4);
+                CHECK(p.second.x == 1);
+            }
+
+            {
+                const json j = {6, 7};
+                auto p = j.get<std::pair<NonDefaultConstructible, int>>();
+                CHECK(p.first.x == 6);
+                CHECK(p.second == 7);
+            }
+
+            {
+                const json j = 7;
+                CHECK_THROWS_AS((j.get<std::pair<NonDefaultConstructible, int>>()), json::type_error);
+            }
+        }
+
+        SECTION("std::tuple")
+        {
+            {
+                const json j = {9};
+                auto t = j.get<std::tuple<NonDefaultConstructible>>();
+                CHECK(std::get<0>(t).x == 9);
+            }
+
+            {
+                const json j = {9, 8, 7};
+                auto t = j.get<std::tuple<NonDefaultConstructible, int, NonDefaultConstructible>>();
+                CHECK(std::get<0>(t).x == 9);
+                CHECK(std::get<1>(t) == 8);
+                CHECK(std::get<2>(t).x == 7);
+            }
+
+            {
+                const json j = 7;
+                CHECK_THROWS_AS((j.get<std::tuple<NonDefaultConstructible>>()), json::type_error);
+            }
+        }
+    }
+
+    SECTION("issue #2865 - ASAN detects memory leaks")
+    {
+        // the code below is expected to not leak memory
+        {
+            nlohmann::json o;
+            const std::string s = "bar";
+
+            nlohmann::to_json(o["foo"], s);
+
+            nlohmann::json p = o;
+
+            // call to_json with a non-null JSON value
+            nlohmann::to_json(p["foo"], s);
+        }
+
+        {
+            nlohmann::json o;
+            const std::string s = "bar";
+
+            nlohmann::to_json(o["foo"], s);
+
+            // call to_json with a non-null JSON value
+            nlohmann::to_json(o["foo"], s);
+        }
+    }
+
+    SECTION("issue #2824 - encoding of json::exception::what()")
+    {
+        json j;
+        sax_no_exception sax(j);
+
+        CHECK(!json::sax_parse("xyz", &sax));
+        CHECK(*sax_no_exception::error_string == "[json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - invalid literal; last read: 'x'");
+        delete sax_no_exception::error_string;  // NOLINT(cppcoreguidelines-owning-memory)
+    }
+
+    SECTION("issue #2825 - Properly constrain the basic_json conversion operator")
+    {
+        static_assert(std::is_copy_assignable<nlohmann::ordered_json>::value, "ordered_json must be copy assignable");
+    }
+
+    SECTION("issue #2958 - Inserting in unordered json using a pointer retains the leading slash")
+    {
+        const std::string p = "/root";
+
+        json test1;
+        test1[json::json_pointer(p)] = json::object();
+        CHECK(test1.dump() == "{\"root\":{}}");
+
+        ordered_json test2;
+        test2[ordered_json::json_pointer(p)] = json::object();
+        CHECK(test2.dump() == "{\"root\":{}}");
+
+        // json::json_pointer and ordered_json::json_pointer are the same type; behave as above
+        ordered_json test3;
+        test3[json::json_pointer(p)] = json::object();
+        CHECK(std::is_same<json::json_pointer::string_t, ordered_json::json_pointer::string_t>::value);
+        CHECK(test3.dump() == "{\"root\":{}}");
+    }
+
+    SECTION("issue #2982 - to_{binary format} does not provide a mechanism for specifying a custom allocator for the returned type")
+    {
+        std::vector<std::uint8_t, my_allocator<std::uint8_t>> my_vector;
+        json j = {1, 2, 3, 4};
+        json::to_cbor(j, my_vector);
+        json k = json::from_cbor(my_vector);
+        CHECK(j == k);
+    }
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+    // JSON_HAS_CPP_17 (do not remove; see note at top of file)
+    SECTION("issue #3070 - Version 3.10.3 breaks backward-compatibility with 3.10.2 ")
+    {
+        nlohmann::detail::std_fs::path text_path("/tmp/text.txt");
+        const json j(text_path);
+
+        const auto j_path = j.get<nlohmann::detail::std_fs::path>();
+        CHECK(j_path == text_path);
+
+#if DOCTEST_CLANG || DOCTEST_GCC >= DOCTEST_COMPILER(8, 4, 0)
+        // only known to work on Clang and GCC >=8.4
+        CHECK_THROWS_WITH_AS(nlohmann::detail::std_fs::path(json(1)), "[json.exception.type_error.302] type must be string, but is number", json::type_error);
+#endif
+    }
+#endif
+
+    SECTION("issue #3077 - explicit constructor with default does not compile")
+    {
+        json j;
+        j[0]["value"] = true;
+        std::vector<FooBar> foo;
+        j.get_to(foo);
+    }
+
+    SECTION("issue #3108 - ordered_json doesn't support range based erase")
+    {
+        ordered_json j = {1, 2, 2, 4};
+
+        auto last = std::unique(j.begin(), j.end());
+        j.erase(last, j.end());
+
+        CHECK(j.dump() == "[1,2,4]");
+
+        j.erase(std::remove_if(j.begin(), j.end(), [](const ordered_json & val)
+        {
+            return val == 2;
+        }), j.end());
+
+        CHECK(j.dump() == "[1,4]");
+    }
+
+    SECTION("issue #3343 - json and ordered_json are not interchangeable")
+    {
+        json::object_t jobj({ { "product", "one" } });
+        ordered_json::object_t ojobj({{"product", "one"}});
+
+        auto jit = jobj.begin();
+        auto ojit = ojobj.begin();
+
+        CHECK(jit->first == ojit->first);
+        CHECK(jit->second.get<std::string>() == ojit->second.get<std::string>());
+    }
+
+    SECTION("issue #3171 - if class is_constructible from std::string wrong from_json overload is being selected, compilation failed")
+    {
+        const json j{{ "str", "value"}};
+
+        // failed with: error: no match for ‘operator=’ (operand types are ‘for_3171_derived’ and ‘const nlohmann::basic_json<>::string_t’
+        //                                               {aka ‘const std::__cxx11::basic_string<char>’})
+        //                  s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+        auto td = j.get<for_3171_derived>();
+
+        CHECK(td.str == "value");
+    }
+
+#ifdef JSON_HAS_CPP_20
+    SECTION("issue #3312 - Parse to custom class from unordered_json breaks on G++11.2.0 with C++20")
+    {
+        // see test for #3171
+        const ordered_json j = {{"name", "class"}};
+        for_3312 obj{};
+
+        j.get_to(obj);
+
+        CHECK(obj.name == "class");
+    }
+#endif
+
+#if defined(JSON_HAS_CPP_17) && JSON_USE_IMPLICIT_CONVERSIONS
+    SECTION("issue #3428 - Error occurred when converting nlohmann::json to std::any")
+    {
+        const json j;
+        const std::any a1 = j;
+        std::any&& a2 = j;
+
+        CHECK(a1.type() == typeid(j));
+        CHECK(a2.type() == typeid(j));
+    }
+#endif
+
+    SECTION("issue #3204 - ambiguous regression")
+    {
+        for_3204_bar bar_from_foo([](for_3204_foo) noexcept {}); // NOLINT(performance-unnecessary-value-param)
+        for_3204_bar bar_from_json([](json) noexcept {}); // NOLINT(performance-unnecessary-value-param)
+
+        CHECK(bar_from_foo.constructed_from == for_3204_bar::constructed_from_foo);
+        CHECK(bar_from_json.constructed_from == for_3204_bar::constructed_from_json);
+    }
+
+    SECTION("issue #3333 - Ambiguous conversion from nlohmann::basic_json<> to custom class")
+    {
+        const json j
+        {
+            {"x", 1},
+            {"y", 2}
+        };
+        for_3333 p = j;
+
+        CHECK(p.x == 1);
+        CHECK(p.y == 2);
+    }
+}
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-serialization.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-serialization.cpp
new file mode 100644
index 00000000..201e5724
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-serialization.cpp
@@ -0,0 +1,297 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <sstream>
+#include <iomanip>
+
+TEST_CASE("serialization")
+{
+    SECTION("operator<<")
+    {
+        SECTION("no given width")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss << j;
+            CHECK(ss.str() == "[\"foo\",1,2,3,false,{\"one\":1}]");
+        }
+
+        SECTION("given width")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss << std::setw(4) << j;
+            CHECK(ss.str() ==
+                  "[\n    \"foo\",\n    1,\n    2,\n    3,\n    false,\n    {\n        \"one\": 1\n    }\n]");
+        }
+
+        SECTION("given fill")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss << std::setw(1) << std::setfill('\t') << j;
+            CHECK(ss.str() ==
+                  "[\n\t\"foo\",\n\t1,\n\t2,\n\t3,\n\tfalse,\n\t{\n\t\t\"one\": 1\n\t}\n]");
+        }
+    }
+
+    SECTION("operator>>")
+    {
+        SECTION("no given width")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            j >> ss;
+            CHECK(ss.str() == "[\"foo\",1,2,3,false,{\"one\":1}]");
+        }
+
+        SECTION("given width")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss.width(4);
+            j >> ss;
+            CHECK(ss.str() ==
+                  "[\n    \"foo\",\n    1,\n    2,\n    3,\n    false,\n    {\n        \"one\": 1\n    }\n]");
+        }
+
+        SECTION("given fill")
+        {
+            std::stringstream ss;
+            const json j = {"foo", 1, 2, 3, false, {{"one", 1}}};
+            ss.width(1);
+            ss.fill('\t');
+            j >> ss;
+            CHECK(ss.str() ==
+                  "[\n\t\"foo\",\n\t1,\n\t2,\n\t3,\n\tfalse,\n\t{\n\t\t\"one\": 1\n\t}\n]");
+        }
+    }
+
+    SECTION("dump")
+    {
+        SECTION("invalid character")
+        {
+            const json j = "ä\xA9ü";
+
+            CHECK_THROWS_WITH_AS(j.dump(), "[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9", json::type_error&);
+            CHECK_THROWS_WITH_AS(j.dump(1, ' ', false, json::error_handler_t::strict), "[json.exception.type_error.316] invalid UTF-8 byte at index 2: 0xA9", json::type_error&);
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"äü\"");
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"ä\xEF\xBF\xBDü\"");
+            CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"\\u00e4\\ufffd\\u00fc\"");
+        }
+
+        SECTION("ending with incomplete character")
+        {
+            const json j = "123\xC2";
+
+            CHECK_THROWS_WITH_AS(j.dump(), "[json.exception.type_error.316] incomplete UTF-8 string; last byte: 0xC2", json::type_error&);
+            CHECK_THROWS_AS(j.dump(1, ' ', false, json::error_handler_t::strict), json::type_error&);
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"123\"");
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"123\xEF\xBF\xBD\"");
+            CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"123\\ufffd\"");
+        }
+
+        SECTION("unexpected character")
+        {
+            const json j = "123\xF1\xB0\x34\x35\x36";
+
+            CHECK_THROWS_WITH_AS(j.dump(), "[json.exception.type_error.316] invalid UTF-8 byte at index 5: 0x34", json::type_error&);
+            CHECK_THROWS_AS(j.dump(1, ' ', false, json::error_handler_t::strict), json::type_error&);
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::ignore) == "\"123456\"");
+            CHECK(j.dump(-1, ' ', false, json::error_handler_t::replace) == "\"123\xEF\xBF\xBD\x34\x35\x36\"");
+            CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"123\\ufffd456\"");
+        }
+
+        SECTION("U+FFFD Substitution of Maximal Subparts")
+        {
+            // Some tests (mostly) from
+            // https://www.unicode.org/versions/Unicode11.0.0/ch03.pdf
+            // Section 3.9 -- U+FFFD Substitution of Maximal Subparts
+
+            auto test = [&](std::string const & input, std::string const & expected)
+            {
+                const json j = input;
+                CHECK(j.dump(-1, ' ', true, json::error_handler_t::replace) == "\"" + expected + "\"");
+            };
+
+            test("\xC2", "\\ufffd");
+            test("\xC2\x41\x42", "\\ufffd" "\x41" "\x42");
+            test("\xC2\xF4", "\\ufffd" "\\ufffd");
+
+            test("\xF0\x80\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+            test("\xF1\x80\x80\x41", "\\ufffd" "\x41");
+            test("\xF2\x80\x80\x41", "\\ufffd" "\x41");
+            test("\xF3\x80\x80\x41", "\\ufffd" "\x41");
+            test("\xF4\x80\x80\x41", "\\ufffd" "\x41");
+            test("\xF5\x80\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+
+            test("\xF0\x90\x80\x41", "\\ufffd" "\x41");
+            test("\xF1\x90\x80\x41", "\\ufffd" "\x41");
+            test("\xF2\x90\x80\x41", "\\ufffd" "\x41");
+            test("\xF3\x90\x80\x41", "\\ufffd" "\x41");
+            test("\xF4\x90\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+            test("\xF5\x90\x80\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+
+            test("\xC0\xAF\xE0\x80\xBF\xF0\x81\x82\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+            test("\xED\xA0\x80\xED\xBF\xBF\xED\xAF\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+            test("\xF4\x91\x92\x93\xFF\x41\x80\xBF\x42", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41" "\\ufffd""\\ufffd" "\x42");
+            test("\xE1\x80\xE2\xF0\x91\x92\xF1\xBF\x41", "\\ufffd" "\\ufffd" "\\ufffd" "\\ufffd" "\x41");
+        }
+    }
+
+    SECTION("to_string")
+    {
+        auto test = [&](std::string const & input, std::string const & expected)
+        {
+            using std::to_string;
+            const json j = input;
+            CHECK(to_string(j) == "\"" + expected + "\"");
+        };
+
+        test(R"({"x":5,"y":6})", R"({\"x\":5,\"y\":6})");
+        test("{\"x\":[10,null,null,null]}", R"({\"x\":[10,null,null,null]})");
+        test("test", "test");
+        test("[3,\"false\",false]", R"([3,\"false\",false])");
+    }
+}
+
+TEST_CASE_TEMPLATE("serialization for extreme integer values", T, int32_t, uint32_t, int64_t, uint64_t) // NOLINT(readability-math-missing-parentheses)
+{
+    SECTION("minimum")
+    {
+        constexpr auto minimum = (std::numeric_limits<T>::min)();
+        const json j = minimum;
+        CHECK(j.dump() == std::to_string(minimum));
+    }
+
+    SECTION("maximum")
+    {
+        constexpr auto maximum = (std::numeric_limits<T>::max)();
+        const json j = maximum;
+        CHECK(j.dump() == std::to_string(maximum));
+    }
+}
+
+TEST_CASE("dump with binary values")
+{
+    auto binary = json::binary({1, 2, 3, 4});
+    auto binary_empty = json::binary({});
+    auto binary_with_subtype = json::binary({1, 2, 3, 4}, 128);
+    auto binary_empty_with_subtype = json::binary({}, 128);
+
+    const json object = {{"key", binary}};
+    const json object_empty = {{"key", binary_empty}};
+    const json object_with_subtype = {{"key", binary_with_subtype}};
+    const json object_empty_with_subtype = {{"key", binary_empty_with_subtype}};
+
+    const json array = {"value", 1, binary};
+    const json array_empty = {"value", 1, binary_empty};
+    const json array_with_subtype = {"value", 1, binary_with_subtype};
+    const json array_empty_with_subtype = {"value", 1, binary_empty_with_subtype};
+
+    SECTION("normal")
+    {
+        CHECK(binary.dump() == "{\"bytes\":[1,2,3,4],\"subtype\":null}");
+        CHECK(binary_empty.dump() == "{\"bytes\":[],\"subtype\":null}");
+        CHECK(binary_with_subtype.dump() == "{\"bytes\":[1,2,3,4],\"subtype\":128}");
+        CHECK(binary_empty_with_subtype.dump() == "{\"bytes\":[],\"subtype\":128}");
+
+        CHECK(object.dump() == "{\"key\":{\"bytes\":[1,2,3,4],\"subtype\":null}}");
+        CHECK(object_empty.dump() == "{\"key\":{\"bytes\":[],\"subtype\":null}}");
+        CHECK(object_with_subtype.dump() == "{\"key\":{\"bytes\":[1,2,3,4],\"subtype\":128}}");
+        CHECK(object_empty_with_subtype.dump() == "{\"key\":{\"bytes\":[],\"subtype\":128}}");
+
+        CHECK(array.dump() == "[\"value\",1,{\"bytes\":[1,2,3,4],\"subtype\":null}]");
+        CHECK(array_empty.dump() == "[\"value\",1,{\"bytes\":[],\"subtype\":null}]");
+        CHECK(array_with_subtype.dump() == "[\"value\",1,{\"bytes\":[1,2,3,4],\"subtype\":128}]");
+        CHECK(array_empty_with_subtype.dump() == "[\"value\",1,{\"bytes\":[],\"subtype\":128}]");
+    }
+
+    SECTION("pretty-printed")
+    {
+        CHECK(binary.dump(4) == "{\n"
+              "    \"bytes\": [1, 2, 3, 4],\n"
+              "    \"subtype\": null\n"
+              "}");
+        CHECK(binary_empty.dump(4) == "{\n"
+              "    \"bytes\": [],\n"
+              "    \"subtype\": null\n"
+              "}");
+        CHECK(binary_with_subtype.dump(4) == "{\n"
+              "    \"bytes\": [1, 2, 3, 4],\n"
+              "    \"subtype\": 128\n"
+              "}");
+        CHECK(binary_empty_with_subtype.dump(4) == "{\n"
+              "    \"bytes\": [],\n"
+              "    \"subtype\": 128\n"
+              "}");
+
+        CHECK(object.dump(4) == "{\n"
+              "    \"key\": {\n"
+              "        \"bytes\": [1, 2, 3, 4],\n"
+              "        \"subtype\": null\n"
+              "    }\n"
+              "}");
+        CHECK(object_empty.dump(4) == "{\n"
+              "    \"key\": {\n"
+              "        \"bytes\": [],\n"
+              "        \"subtype\": null\n"
+              "    }\n"
+              "}");
+        CHECK(object_with_subtype.dump(4) == "{\n"
+              "    \"key\": {\n"
+              "        \"bytes\": [1, 2, 3, 4],\n"
+              "        \"subtype\": 128\n"
+              "    }\n"
+              "}");
+        CHECK(object_empty_with_subtype.dump(4) == "{\n"
+              "    \"key\": {\n"
+              "        \"bytes\": [],\n"
+              "        \"subtype\": 128\n"
+              "    }\n"
+              "}");
+
+        CHECK(array.dump(4) == "[\n"
+              "    \"value\",\n"
+              "    1,\n"
+              "    {\n"
+              "        \"bytes\": [1, 2, 3, 4],\n"
+              "        \"subtype\": null\n"
+              "    }\n"
+              "]");
+        CHECK(array_empty.dump(4) == "[\n"
+              "    \"value\",\n"
+              "    1,\n"
+              "    {\n"
+              "        \"bytes\": [],\n"
+              "        \"subtype\": null\n"
+              "    }\n"
+              "]");
+        CHECK(array_with_subtype.dump(4) == "[\n"
+              "    \"value\",\n"
+              "    1,\n"
+              "    {\n"
+              "        \"bytes\": [1, 2, 3, 4],\n"
+              "        \"subtype\": 128\n"
+              "    }\n"
+              "]");
+        CHECK(array_empty_with_subtype.dump(4) == "[\n"
+              "    \"value\",\n"
+              "    1,\n"
+              "    {\n"
+              "        \"bytes\": [],\n"
+              "        \"subtype\": 128\n"
+              "    }\n"
+              "]");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-testsuites.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-testsuites.cpp
new file mode 100644
index 00000000..d32616bc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-testsuites.cpp
@@ -0,0 +1,1391 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include "make_test_data_available.hpp"
+
+TEST_CASE("compliance tests from json.org")
+{
+    // test cases are from https://json.org/JSON_checker/
+
+    SECTION("expected failures")
+    {
+        for (const auto* filename :
+                {
+                    //TEST_DATA_DIRECTORY "/json_tests/fail1.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail2.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail3.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail4.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail5.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail6.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail7.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail8.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail9.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail10.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail11.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail12.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail13.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail14.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail15.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail16.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail17.json",
+                    //TEST_DATA_DIRECTORY "/json_tests/fail18.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail19.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail20.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail21.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail22.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail23.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail24.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail25.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail26.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail27.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail28.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail29.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail30.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail31.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail32.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail33.json"
+                })
+        {
+            CAPTURE(filename)
+            std::ifstream f(filename);
+            json _;
+            CHECK_THROWS_AS(_ = json::parse(f), json::parse_error&);
+        }
+    }
+
+    SECTION("no failures with trailing literals (relaxed)")
+    {
+        // these tests fail above, because the parser does not end on EOF;
+        // they succeed when the operator>> is used, because it does not
+        // have this constraint
+        for (const auto* filename :
+                {
+                    TEST_DATA_DIRECTORY "/json_tests/fail7.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail8.json",
+                    TEST_DATA_DIRECTORY "/json_tests/fail10.json",
+                })
+        {
+            CAPTURE(filename)
+            std::ifstream f(filename);
+            json j;
+            CHECK_NOTHROW(f >> j);
+        }
+    }
+
+    SECTION("expected passes")
+    {
+        for (const auto* filename :
+                {
+                    TEST_DATA_DIRECTORY "/json_tests/pass1.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass2.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass3.json"
+                })
+        {
+            CAPTURE(filename)
+            std::ifstream f(filename);
+            json j;
+            CHECK_NOTHROW(f >> j);
+        }
+    }
+}
+
+TEST_CASE("compliance tests from nativejson-benchmark")
+{
+    // test cases from https://github.com/miloyip/nativejson-benchmark/blob/master/src/main.cpp
+
+    SECTION("doubles")
+    {
+        auto TEST_DOUBLE = [](const std::string & json_string, const double expected)
+        {
+            CAPTURE(json_string)
+            CAPTURE(expected)
+            CHECK(json::parse(json_string)[0].get<double>() == Approx(expected));
+        };
+
+        TEST_DOUBLE("[0.0]", 0.0);
+        TEST_DOUBLE("[-0.0]", -0.0);
+        TEST_DOUBLE("[1.0]", 1.0);
+        TEST_DOUBLE("[-1.0]", -1.0);
+        TEST_DOUBLE("[1.5]", 1.5);
+        TEST_DOUBLE("[-1.5]", -1.5);
+        TEST_DOUBLE("[3.1416]", 3.1416);
+        TEST_DOUBLE("[1E10]", 1E10);
+        TEST_DOUBLE("[1e10]", 1e10);
+        TEST_DOUBLE("[1E+10]", 1E+10);
+        TEST_DOUBLE("[1E-10]", 1E-10);
+        TEST_DOUBLE("[-1E10]", -1E10);
+        TEST_DOUBLE("[-1e10]", -1e10);
+        TEST_DOUBLE("[-1E+10]", -1E+10);
+        TEST_DOUBLE("[-1E-10]", -1E-10);
+        TEST_DOUBLE("[1.234E+10]", 1.234E+10);
+        TEST_DOUBLE("[1.234E-10]", 1.234E-10);
+        TEST_DOUBLE("[1.79769e+308]", 1.79769e+308);
+        TEST_DOUBLE("[2.22507e-308]", 2.22507e-308);
+        TEST_DOUBLE("[-1.79769e+308]", -1.79769e+308);
+        TEST_DOUBLE("[-2.22507e-308]", -2.22507e-308);
+        TEST_DOUBLE("[4.9406564584124654e-324]", 4.9406564584124654e-324); // minimum denormal
+        TEST_DOUBLE("[2.2250738585072009e-308]", 2.2250738585072009e-308); // Max subnormal double
+        TEST_DOUBLE("[2.2250738585072014e-308]", 2.2250738585072014e-308); // Min normal positive double
+        TEST_DOUBLE("[1.7976931348623157e+308]", 1.7976931348623157e+308); // Max double
+        TEST_DOUBLE("[1e-10000]", 0.0);                                   // must underflow
+        TEST_DOUBLE("[18446744073709551616]",
+                    18446744073709551616.0);    // 2^64 (max of uint64_t + 1, force to use double)
+        TEST_DOUBLE("[-9223372036854775809]",
+                    -9223372036854775809.0);    // -2^63 - 1(min of int64_t + 1, force to use double)
+        TEST_DOUBLE("[0.9868011474609375]",
+                    0.9868011474609375);          // https://github.com/miloyip/rapidjson/issues/120
+        TEST_DOUBLE("[123e34]", 123e34);                                  // Fast Path Cases In Disguise
+        TEST_DOUBLE("[45913141877270640000.0]", 45913141877270640000.0);
+        TEST_DOUBLE("[2.2250738585072011e-308]",
+                    2.2250738585072011e-308);
+        //TEST_DOUBLE("[1e-00011111111111]", 0.0);
+        //TEST_DOUBLE("[-1e-00011111111111]", -0.0);
+        TEST_DOUBLE("[1e-214748363]", 0.0);
+        TEST_DOUBLE("[1e-214748364]", 0.0);
+        //TEST_DOUBLE("[1e-21474836311]", 0.0);
+        TEST_DOUBLE("[0.017976931348623157e+310]", 1.7976931348623157e+308); // Max double in another form
+
+        // Since
+        // abs((2^-1022 - 2^-1074) - 2.2250738585072012e-308) = 3.109754131239141401123495768877590405345064751974375599... ¡Á 10^-324
+        // abs((2^-1022) - 2.2250738585072012e-308) = 1.830902327173324040642192159804623318305533274168872044... ¡Á 10 ^ -324
+        // So 2.2250738585072012e-308 should round to 2^-1022 = 2.2250738585072014e-308
+        TEST_DOUBLE("[2.2250738585072012e-308]",
+                    2.2250738585072014e-308);
+
+        // Closer to normal/subnormal boundary
+        // boundary = 2^-1022 - 2^-1075 = 2.225073858507201136057409796709131975934819546351645648... ¡Á 10^-308
+        TEST_DOUBLE("[2.22507385850720113605740979670913197593481954635164564e-308]",
+                    2.2250738585072009e-308);
+        TEST_DOUBLE("[2.22507385850720113605740979670913197593481954635164565e-308]",
+                    2.2250738585072014e-308);
+
+        // 1.0 is in (1.0 - 2^-54, 1.0 + 2^-53)
+        // 1.0 - 2^-54 = 0.999999999999999944488848768742172978818416595458984375
+        TEST_DOUBLE("[0.999999999999999944488848768742172978818416595458984375]", 1.0); // round to even
+        TEST_DOUBLE("[0.999999999999999944488848768742172978818416595458984374]",
+                    0.99999999999999989); // previous double
+        TEST_DOUBLE("[0.999999999999999944488848768742172978818416595458984376]", 1.0); // next double
+        // 1.0 + 2^-53 = 1.00000000000000011102230246251565404236316680908203125
+        TEST_DOUBLE("[1.00000000000000011102230246251565404236316680908203125]", 1.0); // round to even
+        TEST_DOUBLE("[1.00000000000000011102230246251565404236316680908203124]", 1.0); // previous double
+        TEST_DOUBLE("[1.00000000000000011102230246251565404236316680908203126]",
+                    1.00000000000000022); // next double
+
+        // Numbers from https://github.com/floitsch/double-conversion/blob/master/test/cctest/test-strtod.cc
+
+        TEST_DOUBLE("[72057594037927928.0]", 72057594037927928.0);
+        TEST_DOUBLE("[72057594037927936.0]", 72057594037927936.0);
+        TEST_DOUBLE("[72057594037927932.0]", 72057594037927936.0);
+        TEST_DOUBLE("[7205759403792793199999e-5]", 72057594037927928.0);
+        TEST_DOUBLE("[7205759403792793200001e-5]", 72057594037927936.0);
+
+        TEST_DOUBLE("[9223372036854774784.0]", 9223372036854774784.0);
+        TEST_DOUBLE("[9223372036854775808.0]", 9223372036854775808.0);
+        TEST_DOUBLE("[9223372036854775296.0]", 9223372036854775808.0);
+        TEST_DOUBLE("[922337203685477529599999e-5]", 9223372036854774784.0);
+        TEST_DOUBLE("[922337203685477529600001e-5]", 9223372036854775808.0);
+
+        TEST_DOUBLE("[10141204801825834086073718800384]", 10141204801825834086073718800384.0);
+        TEST_DOUBLE("[10141204801825835211973625643008]", 10141204801825835211973625643008.0);
+        TEST_DOUBLE("[10141204801825834649023672221696]", 10141204801825835211973625643008.0);
+        TEST_DOUBLE("[1014120480182583464902367222169599999e-5]", 10141204801825834086073718800384.0);
+        TEST_DOUBLE("[1014120480182583464902367222169600001e-5]", 10141204801825835211973625643008.0);
+
+        TEST_DOUBLE("[5708990770823838890407843763683279797179383808]",
+                    5708990770823838890407843763683279797179383808.0);
+        TEST_DOUBLE("[5708990770823839524233143877797980545530986496]",
+                    5708990770823839524233143877797980545530986496.0);
+        TEST_DOUBLE("[5708990770823839207320493820740630171355185152]",
+                    5708990770823839524233143877797980545530986496.0);
+        TEST_DOUBLE("[5708990770823839207320493820740630171355185151999e-3]",
+                    5708990770823838890407843763683279797179383808.0);
+        TEST_DOUBLE("[5708990770823839207320493820740630171355185152001e-3]",
+                    5708990770823839524233143877797980545530986496.0);
+
+        {
+            std::string n1e308(312, '0');   // '1' followed by 308 '0'
+            n1e308[0] = '[';
+            n1e308[1] = '1';
+            n1e308[310] = ']';
+            n1e308[311] = '\0';
+            TEST_DOUBLE(n1e308, 1E308);
+        }
+
+        // Cover trimming
+        TEST_DOUBLE(
+            "[2.22507385850720113605740979670913197593481954635164564802342610972482222202107694551652952390813508"
+            "7914149158913039621106870086438694594645527657207407820621743379988141063267329253552286881372149012"
+            "9811224514518898490572223072852551331557550159143974763979834118019993239625482890171070818506906306"
+            "6665599493827577257201576306269066333264756530000924588831643303777979186961204949739037782970490505"
+            "1080609940730262937128958950003583799967207254304360284078895771796150945516748243471030702609144621"
+            "5722898802581825451803257070188608721131280795122334262883686223215037756666225039825343359745688844"
+            "2390026549819838548794829220689472168983109969836584681402285424333066033985088644580400103493397042"
+            "7567186443383770486037861622771738545623065874679014086723327636718751234567890123456789012345678901"
+            "e-308]",
+            2.2250738585072014e-308);
+    }
+
+    SECTION("strings")
+    {
+        auto TEST_STRING = [](const std::string & json_string, const std::string & expected)
+        {
+            CAPTURE(json_string)
+            CAPTURE(expected)
+            CHECK(json::parse(json_string)[0].get<std::string>() == expected);
+        };
+
+        TEST_STRING("[\"\"]", "");
+        TEST_STRING("[\"Hello\"]", "Hello");
+        TEST_STRING(R"(["Hello\nWorld"])", "Hello\nWorld");
+        //TEST_STRING("[\"Hello\\u0000World\"]", "Hello\0World");
+        TEST_STRING(R"(["\"\\/\b\f\n\r\t"])", "\"\\/\b\f\n\r\t");
+        TEST_STRING(R"(["\u0024"])", "$");         // Dollar sign U+0024
+        TEST_STRING(R"(["\u00A2"])", "\xC2\xA2");     // Cents sign U+00A2
+        TEST_STRING(R"(["\u20AC"])", "\xE2\x82\xAC"); // Euro sign U+20AC
+        TEST_STRING(R"(["\uD834\uDD1E"])", "\xF0\x9D\x84\x9E");  // G clef sign U+1D11E
+    }
+
+    SECTION("roundtrip")
+    {
+        // test cases are from https://github.com/miloyip/nativejson-benchmark/tree/master/test/data/roundtrip
+
+        for (const auto* filename :
+                {
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip01.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip02.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip03.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip04.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip05.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip06.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip07.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip08.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip09.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip10.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip11.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip12.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip13.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip14.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip15.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip16.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip17.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip18.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip19.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip20.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip21.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip22.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip23.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip24.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip25.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip26.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip27.json",
+                    //TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip28.json", // incompatible with roundtrip24
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip29.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip30.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip31.json"
+                    //TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip32.json" // same as roundtrip31
+                })
+        {
+            CAPTURE(filename)
+            std::ifstream f(filename);
+            std::string json_string( (std::istreambuf_iterator<char>(f) ),
+                                     (std::istreambuf_iterator<char>()) );
+
+            CAPTURE(json_string)
+            const json j = json::parse(json_string);
+            CHECK(j.dump() == json_string);
+        }
+    }
+}
+
+TEST_CASE("test suite from json-test-suite")
+{
+    SECTION("read all sample.json")
+    {
+        // read a file with all Unicode characters stored as single-character
+        // strings in a JSON array
+        std::ifstream f(TEST_DATA_DIRECTORY "/json_testsuite/sample.json");
+        json j;
+        CHECK_NOTHROW(f >> j);
+
+        // the array has 3 elements
+        CHECK(j.size() == 3);
+    }
+}
+
+TEST_CASE("json.org examples")
+{
+    // here, we list all JSON values from https://json.org/example
+
+    SECTION("1.json")
+    {
+        std::ifstream f(TEST_DATA_DIRECTORY "/json.org/1.json");
+        json j;
+        CHECK_NOTHROW(f >> j);
+    }
+
+    SECTION("2.json")
+    {
+        std::ifstream f(TEST_DATA_DIRECTORY "/json.org/2.json");
+        json j;
+        CHECK_NOTHROW(f >> j);
+    }
+
+    SECTION("3.json")
+    {
+        std::ifstream f(TEST_DATA_DIRECTORY "/json.org/3.json");
+        json j;
+        CHECK_NOTHROW(f >> j);
+    }
+
+    SECTION("4.json")
+    {
+        std::ifstream f(TEST_DATA_DIRECTORY "/json.org/4.json");
+        json j;
+        CHECK_NOTHROW(f >> j);
+    }
+
+    SECTION("5.json")
+    {
+        std::ifstream f(TEST_DATA_DIRECTORY "/json.org/5.json");
+        json j;
+        CHECK_NOTHROW(f >> j);
+    }
+    SECTION("FILE 1.json")
+    {
+        const std::unique_ptr<std::FILE, decltype(&std::fclose)> f(std::fopen(TEST_DATA_DIRECTORY "/json.org/1.json", "r"), &std::fclose);
+        json _;
+        CHECK_NOTHROW(_ = json::parse(f.get()));
+    }
+
+    SECTION("FILE 2.json")
+    {
+        const std::unique_ptr<std::FILE, decltype(&std::fclose)> f(std::fopen(TEST_DATA_DIRECTORY "/json.org/2.json", "r"), &std::fclose);
+        json _;
+        CHECK_NOTHROW(_ = json::parse(f.get()));
+    }
+
+    SECTION("FILE 3.json")
+    {
+        const std::unique_ptr<std::FILE, decltype(&std::fclose)> f(std::fopen(TEST_DATA_DIRECTORY "/json.org/3.json", "r"), &std::fclose);
+        json _;
+        CHECK_NOTHROW(_ = json::parse(f.get()));
+    }
+
+    SECTION("FILE 4.json")
+    {
+        const std::unique_ptr<std::FILE, decltype(&std::fclose)> f(std::fopen(TEST_DATA_DIRECTORY "/json.org/4.json", "r"), &std::fclose);
+        json _;
+        CHECK_NOTHROW(_ = json::parse(f.get()));
+    }
+
+    SECTION("FILE 5.json")
+    {
+        const std::unique_ptr<std::FILE, decltype(&std::fclose)> f(std::fopen(TEST_DATA_DIRECTORY "/json.org/5.json", "r"), &std::fclose);
+        json _;
+        CHECK_NOTHROW(_ = json::parse(f.get()));
+    }
+}
+
+TEST_CASE("RFC 8259 examples")
+{
+    // here, we list all JSON values from the RFC 8259 document
+
+    SECTION("7. Strings")
+    {
+        CHECK(json::parse("\"\\u005C\"") == json("\\"));
+        CHECK(json::parse("\"\\uD834\\uDD1E\"") == json("𝄞"));
+        CHECK(json::parse("\"𝄞\"") == json("𝄞"));
+    }
+
+    SECTION("8.3 String Comparison")
+    {
+        CHECK(json::parse("\"a\\b\"") == json::parse("\"a\u005Cb\""));
+    }
+
+    SECTION("13 Examples")
+    {
+        {
+            const auto* json_contents = R"(
+            {
+                 "Image": {
+                     "Width":  800,
+                     "Height": 600,
+                     "Title":  "View from 15th Floor",
+                     "Thumbnail": {
+                         "Url":    "http://www.example.com/image/481989943",
+                         "Height": 125,
+                         "Width":  100
+                     },
+                     "Animated" : false,
+                     "IDs": [116, 943, 234, 38793]
+                   }
+               }
+            )";
+
+            CHECK_NOTHROW(json(json_contents));
+        }
+
+        {
+            const auto* json_contents = R"(
+                [
+                    {
+                       "precision": "zip",
+                       "Latitude":  37.7668,
+                       "Longitude": -122.3959,
+                       "Address":   "",
+                       "City":      "SAN FRANCISCO",
+                       "State":     "CA",
+                       "Zip":       "94107",
+                       "Country":   "US"
+                    },
+                    {
+                       "precision": "zip",
+                       "Latitude":  37.371991,
+                       "Longitude": -122.026020,
+                       "Address":   "",
+                       "City":      "SUNNYVALE",
+                       "State":     "CA",
+                       "Zip":       "94085",
+                       "Country":   "US"
+                    }
+            ])";
+            CHECK_NOTHROW(json(json_contents));
+        }
+
+        CHECK(json::parse("\"Hello world!\"") == json("Hello world!"));
+        CHECK(json::parse("42") == json(42));
+        CHECK(json::parse("true") == json(true));
+    }
+}
+
+TEST_CASE("nst's JSONTestSuite")
+{
+    SECTION("test_parsing")
+    {
+        SECTION("y")
+        {
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_arraysWithSpaces.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_empty-string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_empty.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_ending_with_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_false.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_heterogeneous.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_1_and_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_leading_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_several_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_array_with_trailing_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_0e+1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_0e1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_after_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_double_close_to_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_double_huge_neg_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_int_with_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_minus_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_one.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_negative_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e_neg_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_capital_e_pos_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_exponent.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_fraction_exponent.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_neg_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_pos_exponent.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_underflow.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_simple_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_simple_real.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_too_big_neg_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_too_big_pos_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_very_big_negative_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_basic.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_duplicated_key_and_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_empty.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_empty_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_escaped_null_in_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_extreme_numbers.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_long_strings.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_simple.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_string_unicode.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_object_with_newlines.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_1_2_3_bytes_UTF-8_sequences.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_UTF-16_Surrogates_U+1D11E_MUSICAL_SYMBOL_G_CLEF.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pair.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pairs.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_allowed_escapes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_backslash_and_u_escaped_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_backslash_doublequotes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_comments.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_double_escape_a.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_double_escape_n.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_escaped_control_character.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_escaped_noncharacter.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_in_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_in_array_with_leading_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_last_surrogates_1_and_2.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_newline_uescaped.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+10FFFF.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+1FFFF.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+FFFF.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_null_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_one-byte-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_pi.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_simple_ascii.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_three-byte-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_two-byte-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_u+2028_line_sep.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_u+2029_par_sep.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_uEscape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unescaped_char_delete.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicodeEscapedBackslash.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_2.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_U+200B_ZERO_WIDTH_SPACE.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_U+2064_invisible_plus.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_unicode_escaped_double_quote.json",
+                        // TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_utf16.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_utf8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_string_with_del_character.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_false.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_negative_real.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_lonely_true.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_string_empty.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_trailing_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_true_in_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_structure_whitespace_array.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json j;
+                CHECK_NOTHROW(f >> j);
+            }
+        }
+
+        SECTION("n")
+        {
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_1_true_without_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_a_invalid_utf8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_colon_instead_of_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_comma_after_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_comma_and_number.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_double_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_double_extra_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_extra_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_extra_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_incomplete.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_incomplete_invalid_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_inner_array_no_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_invalid_utf8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_items_separated_by_semicolon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_just_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_just_minus.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_missing_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_newlines_unclosed.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_number_and_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_number_and_several_commas.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_spaces_vertical_tab_formfeed.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_star_inside.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_unclosed.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_unclosed_trailing_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_unclosed_with_new_lines.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_unclosed_with_object_inside.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_incomplete_false.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_incomplete_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_incomplete_true.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_++.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_+1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_+Inf.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_-01.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_-1.0..json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_-2..json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_-NaN.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_.-1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_.2e-3.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_0.1.2.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_0.3e+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_0.3e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_0.e1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_0_capital_E+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_0_capital_E.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_0e+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_0e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_1.0e+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_1.0e-.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_1.0e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_1_000.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_1eE2.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_2.e+3.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_2.e-3.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_2.e3.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_9.e+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_Inf.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_NaN.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_U+FF11_fullwidth_digit_one.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_expression.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_hex_1_digit.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_hex_2_digits.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_infinity.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_invalid+-.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_invalid-negative-real.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_invalid-utf-8-in-bigger-int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_invalid-utf-8-in-exponent.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_invalid-utf-8-in-int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_minus_infinity.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_minus_sign_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_minus_space_1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_neg_int_starting_with_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_neg_real_without_int_part.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_neg_with_garbage_at_end.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_real_garbage_after_e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_real_with_invalid_utf8_after_e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_real_without_fractional_part.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_starting_with_dot.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_then_00.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_with_alpha.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_with_alpha_char.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_number_with_leading_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_bad_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_bracket_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_comma_instead_of_colon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_double_colon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_emoji.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_garbage_at_end.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_key_with_single_quotes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_missing_colon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_missing_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_missing_semicolon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_missing_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_no-colon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_non_string_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_non_string_key_but_huge_number_instead.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_pi_in_key_and_trailing_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_repeated_null_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_several_trailing_commas.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_single_quote.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comment.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comment_open.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comment_slash_open.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comment_slash_open_incomplete.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_two_commas_in_a_row.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_unquoted_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_unterminated-value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_with_single_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_single_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_1_surrogate_then_escape u.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_1_surrogate_then_escape u1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_1_surrogate_then_escape u1x.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_1_surrogate_then_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_UTF-16_incomplete_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_UTF8_surrogate_U+D800.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_accentuated_char_no_quotes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_backslash_00.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_escape_x.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_escaped_backslash_bad.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_escaped_ctrl_char_tab.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_escaped_emoji.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_incomplete_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_incomplete_escaped_character.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_incomplete_surrogate_escape_invalid.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_invalid-utf-8-in-escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_invalid_backslash_esc.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_invalid_unicode_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_invalid_utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_invalid_utf8_after_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_iso_latin_1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_leading_uescaped_thinspace.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_lone_utf8_continuation_byte.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_no_quotes_with_bad_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_overlong_sequence_2_bytes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_overlong_sequence_6_bytes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_overlong_sequence_6_bytes_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_single_doublequote.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_single_quote.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_single_string_no_double_quotes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_start_escape_unclosed.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_unescaped_crtl_char.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_unescaped_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_unescaped_tab.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_unicode_CapitalU.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_with_trailing_garbage.json",
+                        //!TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_100000_opening_arrays.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_3C.3E.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_3Cnull3E.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_U+2060_word_joined.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_UTF8_BOM_no_data.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_array_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_array_with_extra_array_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_array_with_unclosed_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_ascii-unicode-identifier.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_capitalized_True.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_close_unopened_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_comma_instead_of_closing_brace.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_double_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_end_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_incomplete_UTF8_BOM.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_lone-invalid-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_lone-open-bracket.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_no_data.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_null-byte-outside-string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_number_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_object_followed_by_closing_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_object_unclosed_no_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_object_with_comment.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_object_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_array_apostrophe.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_array_comma.json",
+                        //!TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_array_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_array_open_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_array_open_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_array_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_object_close_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_object_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_object_open_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_object_open_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_object_string_with_apostrophes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_open_open.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_single_point.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_single_star.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_trailing_#.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_uescaped_LF_before_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_unclosed_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_unclosed_array_partial_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_unclosed_array_unfinished_false.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_unclosed_array_unfinished_true.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_unclosed_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_unicode-identifier.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_whitespace_U+2060_word_joiner.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_whitespace_formfeed.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(f), json::parse_error&);
+            }
+        }
+
+        SECTION("n -> y (relaxed)")
+        {
+            // these tests fail above, because the parser does not end on EOF;
+            // they succeed when the operator>> is used, because it does not
+            // have this constraint
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_comma_after_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_array_extra_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comment.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comment_open.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comment_slash_open.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_trailing_comment_slash_open_incomplete.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_object_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_string_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_array_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_array_with_extra_array_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_close_unopened_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_double_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_number_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_object_followed_by_closing_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_object_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/n_structure_trailing_#.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json j;
+                CHECK_NOTHROW(f >> j);
+            }
+        }
+
+        SECTION("i -> y")
+        {
+            for (const auto* filename :
+                    {
+                        // we do not pose a limit on nesting
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_structure_500_nested_arrays.json",
+                        // we silently ignore BOMs
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_structure_UTF-8_BOM_empty_object.json",
+                        // we accept and forward non-characters
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_unicode_U+10FFFE_nonchar.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_unicode_U+1FFFE_nonchar.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_unicode_U+FDD0_nonchar.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_unicode_U+FFFE_nonchar.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json j;
+                CHECK_NOTHROW(f >> j);
+            }
+        }
+
+        // numbers that overflow during parsing
+        SECTION("i/y -> n (out of range)")
+        {
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_number_neg_int_huge_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_number_pos_double_huge_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json j;
+                CHECK_THROWS_AS(f >> j, json::out_of_range&);
+            }
+        }
+
+        SECTION("i -> n")
+        {
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_object_key_lone_2nd_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_1st_surrogate_but_2nd_missing.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_1st_valid_surrogate_2nd_invalid.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_UTF-16_invalid_lonely_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_UTF-16_invalid_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_UTF-8_invalid_sequence.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_incomplete_surrogate_and_escape_valid.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_incomplete_surrogate_pair.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_incomplete_surrogates_escape_valid.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_inverted_surrogates_U+1D11E.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_lone_second_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_not_in_unicode_range.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite/test_parsing/i_string_truncated-utf-8.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json j;
+                CHECK_THROWS_AS(f >> j, json::parse_error&);
+            }
+        }
+    }
+}
+
+TEST_CASE("nst's JSONTestSuite (2)")
+{
+    SECTION("test_parsing")
+    {
+        SECTION("y")
+        {
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_arraysWithSpaces.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_empty-string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_empty.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_ending_with_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_false.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_heterogeneous.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_with_1_and_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_with_leading_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_with_several_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_array_with_trailing_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_0e+1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_0e1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_after_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_double_close_to_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_int_with_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_minus_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_negative_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_negative_one.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_negative_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_real_capital_e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_real_capital_e_neg_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_real_capital_e_pos_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_real_exponent.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_real_fraction_exponent.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_real_neg_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_real_pos_exponent.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_simple_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_number_simple_real.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_basic.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_duplicated_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_duplicated_key_and_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_empty.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_empty_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_escaped_null_in_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_extreme_numbers.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_long_strings.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_simple.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_string_unicode.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_object_with_newlines.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_1_2_3_bytes_UTF-8_sequences.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_accepted_surrogate_pair.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_accepted_surrogate_pairs.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_allowed_escapes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_backslash_and_u_escaped_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_backslash_doublequotes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_comments.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_double_escape_a.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_double_escape_n.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_escaped_control_character.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_escaped_noncharacter.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_in_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_in_array_with_leading_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_last_surrogates_1_and_2.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_nbsp_uescaped.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_nonCharacterInUTF-8_U+10FFFF.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_nonCharacterInUTF-8_U+FFFF.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_null_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_one-byte-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_pi.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_reservedCharacterInUTF-8_U+1BFFF.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_simple_ascii.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_surrogates_U+1D11E_MUSICAL_SYMBOL_G_CLEF.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_three-byte-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_two-byte-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_u+2028_line_sep.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_u+2029_par_sep.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_uEscape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_uescaped_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unescaped_char_delete.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicodeEscapedBackslash.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode_2.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode_U+10FFFE_nonchar.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode_U+1FFFE_nonchar.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode_U+200B_ZERO_WIDTH_SPACE.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode_U+2064_invisible_plus.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode_U+FDD0_nonchar.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode_U+FFFE_nonchar.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_unicode_escaped_double_quote.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_utf8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_string_with_del_character.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_lonely_false.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_lonely_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_lonely_negative_real.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_lonely_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_lonely_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_lonely_true.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_string_empty.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_trailing_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_true_in_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/y_structure_whitespace_array.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json _;
+                CHECK_NOTHROW(_ = json::parse(f));
+                std::ifstream f2(filename);
+                CHECK(json::accept(f2));
+            }
+        }
+
+        SECTION("n")
+        {
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_1_true_without_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_a_invalid_utf8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_colon_instead_of_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_comma_after_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_comma_and_number.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_double_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_double_extra_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_extra_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_extra_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_incomplete.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_incomplete_invalid_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_inner_array_no_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_invalid_utf8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_items_separated_by_semicolon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_just_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_just_minus.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_missing_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_newlines_unclosed.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_number_and_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_number_and_several_commas.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_spaces_vertical_tab_formfeed.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_star_inside.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_unclosed.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_unclosed_trailing_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_unclosed_with_new_lines.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_array_unclosed_with_object_inside.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_incomplete_false.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_incomplete_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_incomplete_true.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_multidigit_number_then_00.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_++.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_+1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_+Inf.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_-01.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_-1.0..json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_-2..json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_-NaN.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_.-1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_.2e-3.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_0.1.2.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_0.3e+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_0.3e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_0.e1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_0_capital_E+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_0_capital_E.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_0e+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_0e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_1.0e+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_1.0e-.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_1.0e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_1_000.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_1eE2.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_2.e+3.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_2.e-3.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_2.e3.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_9.e+.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_Inf.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_NaN.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_U+FF11_fullwidth_digit_one.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_expression.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_hex_1_digit.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_hex_2_digits.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_infinity.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_invalid+-.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_invalid-negative-real.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_invalid-utf-8-in-bigger-int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_invalid-utf-8-in-exponent.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_invalid-utf-8-in-int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_minus_infinity.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_minus_sign_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_minus_space_1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_neg_int_starting_with_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_neg_real_without_int_part.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_neg_with_garbage_at_end.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_real_garbage_after_e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_real_with_invalid_utf8_after_e.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_real_without_fractional_part.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_starting_with_dot.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_with_alpha.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_with_alpha_char.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_number_with_leading_zero.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_bad_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_bracket_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_comma_instead_of_colon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_double_colon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_emoji.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_garbage_at_end.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_key_with_single_quotes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_lone_continuation_byte_in_key_and_trailing_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_missing_colon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_missing_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_missing_semicolon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_missing_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_no-colon.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_non_string_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_non_string_key_but_huge_number_instead.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_repeated_null_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_several_trailing_commas.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_single_quote.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_trailing_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_trailing_comment.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_trailing_comment_open.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_trailing_comment_slash_open.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_trailing_comment_slash_open_incomplete.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_two_commas_in_a_row.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_unquoted_key.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_unterminated-value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_with_single_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_object_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_single_space.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_1_surrogate_then_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_1_surrogate_then_escape_u.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_1_surrogate_then_escape_u1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_1_surrogate_then_escape_u1x.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_accentuated_char_no_quotes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_backslash_00.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_escape_x.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_escaped_backslash_bad.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_escaped_ctrl_char_tab.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_escaped_emoji.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_incomplete_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_incomplete_escaped_character.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_incomplete_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_incomplete_surrogate_escape_invalid.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_invalid-utf-8-in-escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_invalid_backslash_esc.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_invalid_unicode_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_invalid_utf8_after_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_leading_uescaped_thinspace.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_no_quotes_with_bad_escape.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_single_doublequote.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_single_quote.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_single_string_no_double_quotes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_start_escape_unclosed.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_unescaped_crtl_char.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_unescaped_newline.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_unescaped_tab.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_unicode_CapitalU.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_string_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_U+2060_word_joined.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_UTF8_BOM_no_data.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_angle_bracket_..json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_angle_bracket_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_array_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_array_with_extra_array_close.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_array_with_unclosed_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_ascii-unicode-identifier.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_capitalized_True.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_close_unopened_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_comma_instead_of_closing_brace.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_double_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_end_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_incomplete_UTF8_BOM.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_lone-invalid-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_lone-open-bracket.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_no_data.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_null-byte-outside-string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_number_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_object_followed_by_closing_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_object_unclosed_no_value.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_object_with_comment.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_object_with_trailing_garbage.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_array_apostrophe.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_array_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_array_open_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_array_open_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_array_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_object_close_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_object_comma.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_object_open_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_object_open_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_object_string_with_apostrophes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_open.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_single_eacute.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_single_star.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_trailing_#.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_uescaped_LF_before_string.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_unclosed_array.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_unclosed_array_partial_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_unclosed_array_unfinished_false.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_unclosed_array_unfinished_true.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_unclosed_object.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_unicode-identifier.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_whitespace_U+2060_word_joiner.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_whitespace_formfeed.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(f), json::parse_error&);
+                std::ifstream f2(filename);
+                CHECK(!json::accept(f2));
+            }
+        }
+
+        SECTION("n (previously overflowed)")
+        {
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_100000_opening_arrays.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/n_structure_open_array_object.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                CHECK(!json::accept(f));
+            }
+        }
+
+        SECTION("i -> y")
+        {
+            for (const auto* filename :
+                    {
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_double_huge_neg_exp.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_huge_exp.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_neg_int_huge_exp.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_pos_double_huge_exp.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_real_neg_overflow.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_real_pos_overflow.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_real_underflow.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_too_big_neg_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_too_big_pos_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_very_big_negative_int.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_object_key_lone_2nd_surrogate.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_1st_surrogate_but_2nd_missing.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_1st_valid_surrogate_2nd_invalid.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_UTF-16LE_with_BOM.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_UTF-8_invalid_sequence.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_UTF8_surrogate_U+D800.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_incomplete_surrogate_and_escape_valid.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_incomplete_surrogate_pair.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_incomplete_surrogates_escape_valid.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_invalid_lonely_surrogate.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_invalid_surrogate.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_invalid_utf-8.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_inverted_surrogates_U+1D11E.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_iso_latin_1.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_lone_second_surrogate.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_lone_utf8_continuation_byte.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_not_in_unicode_range.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_overlong_sequence_2_bytes.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_overlong_sequence_6_bytes.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_overlong_sequence_6_bytes_null.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_truncated-utf-8.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_utf16BE_no_BOM.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_utf16LE_no_BOM.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_structure_500_nested_arrays.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_structure_UTF-8_BOM_empty_object.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json _;
+                CHECK_NOTHROW(_ = json::parse(f));
+                std::ifstream f2(filename);
+                CHECK(json::accept(f2));
+            }
+        }
+
+        SECTION("i -> n")
+        {
+            for (const auto* filename :
+                    {
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_double_huge_neg_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_huge_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_neg_int_huge_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_pos_double_huge_exp.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_real_neg_overflow.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_real_pos_overflow.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_real_underflow.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_too_big_neg_int.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_too_big_pos_int.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_number_very_big_negative_int.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_object_key_lone_2nd_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_1st_surrogate_but_2nd_missing.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_1st_valid_surrogate_2nd_invalid.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_UTF-16LE_with_BOM.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_UTF-8_invalid_sequence.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_UTF8_surrogate_U+D800.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_incomplete_surrogate_and_escape_valid.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_incomplete_surrogate_pair.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_incomplete_surrogates_escape_valid.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_invalid_lonely_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_invalid_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_invalid_utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_inverted_surrogates_U+1D11E.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_iso_latin_1.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_lone_second_surrogate.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_lone_utf8_continuation_byte.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_not_in_unicode_range.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_overlong_sequence_2_bytes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_overlong_sequence_6_bytes.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_overlong_sequence_6_bytes_null.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_truncated-utf-8.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_utf16BE_no_BOM.json",
+                        TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_string_utf16LE_no_BOM.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_structure_500_nested_arrays.json",
+                        //TEST_DATA_DIRECTORY "/nst_json_testsuite2/test_parsing/i_structure_UTF-8_BOM_empty_object.json"
+                    }
+                )
+            {
+                CAPTURE(filename)
+                std::ifstream f(filename);
+                json _;
+                CHECK_THROWS_AS(_ = json::parse(f), json::exception&); // could be parse_error or out_of_range
+                std::ifstream f2(filename);
+                CHECK(!json::accept(f2));
+            }
+        }
+    }
+}
+
+namespace
+{
+std::string trim(const std::string& str);
+
+// from https://stackoverflow.com/a/25829178/266378
+std::string trim(const std::string& str)
+{
+    const size_t first = str.find_first_not_of(' ');
+    if (std::string::npos == first)
+    {
+        return str;
+    }
+    const size_t last = str.find_last_not_of(' ');
+    return str.substr(first, (last - first + 1));
+}
+} // namespace
+
+TEST_CASE("Big List of Naughty Strings")
+{
+    // test from https://github.com/minimaxir/big-list-of-naughty-strings
+    SECTION("parsing blns.json")
+    {
+        std::ifstream f(TEST_DATA_DIRECTORY "/big-list-of-naughty-strings/blns.json");
+        json j;
+        CHECK_NOTHROW(f >> j);
+    }
+
+    // check if parsed strings roundtrip
+    // https://www.reddit.com/r/cpp/comments/5qpbie/json_form_modern_c_version_210/dd12mpq/
+    SECTION("roundtripping")
+    {
+        std::ifstream f(TEST_DATA_DIRECTORY "/big-list-of-naughty-strings/blns.json");
+        std::string line;
+
+        // read lines one by one, bail out on error or eof
+        while (getline(f, line))
+        {
+            // trim whitespace
+            line = trim(line);
+
+            // remove trailing comma
+            line = line.substr(0, line.find_last_of(','));
+
+            // discard lines without at least two characters (quotes)
+            if (line.size() < 2)
+            {
+                continue;
+            }
+
+            // check roundtrip
+            CAPTURE(line)
+            const json j = json::parse(line);
+            CHECK(j.dump() == line);
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-to_chars.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-to_chars.cpp
new file mode 100644
index 00000000..d7c8de04
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-to_chars.cpp
@@ -0,0 +1,516 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+// XXX:
+// Only compile these tests if 'float' and 'double' are IEEE-754 single- and
+// double-precision numbers, resp.
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::detail::dtoa_impl::reinterpret_bits;
+
+namespace
+{
+float make_float(uint32_t sign_bit, uint32_t biased_exponent, uint32_t significand)
+{
+    assert(sign_bit == 0 || sign_bit == 1);
+    assert(biased_exponent <= 0xFF);
+    assert(significand <= 0x007FFFFF);
+
+    uint32_t bits = 0;
+
+    bits |= sign_bit << 31;
+    bits |= biased_exponent << 23;
+    bits |= significand;
+
+    return reinterpret_bits<float>(bits);
+}
+
+// ldexp -- convert f * 2^e to IEEE single precision
+float make_float(uint64_t f, int e)
+{
+    constexpr uint64_t kHiddenBit               = 0x00800000;
+    constexpr uint64_t kSignificandMask         = 0x007FFFFF;
+    constexpr int      kPhysicalSignificandSize = 23;  // Excludes the hidden bit.
+    constexpr int      kExponentBias            = 0x7F + kPhysicalSignificandSize;
+    constexpr int      kDenormalExponent        = 1 -    kExponentBias;
+    constexpr int      kMaxExponent             = 0xFF - kExponentBias;
+
+    while (f > kHiddenBit + kSignificandMask)
+    {
+        f >>= 1;
+        e++;
+    }
+    if (e >= kMaxExponent)
+    {
+        return std::numeric_limits<float>::infinity();
+    }
+    if (e < kDenormalExponent)
+    {
+        return 0.0;
+    }
+    while (e > kDenormalExponent && (f & kHiddenBit) == 0)
+    {
+        f <<= 1;
+        e--;
+    }
+
+    const uint64_t biased_exponent = (e == kDenormalExponent && (f & kHiddenBit) == 0)
+                                     ? 0
+                                     : static_cast<uint64_t>(e + kExponentBias);
+
+    const uint64_t bits = (f & kSignificandMask) | (biased_exponent << kPhysicalSignificandSize);
+    return reinterpret_bits<float>(static_cast<uint32_t>(bits));
+}
+
+double make_double(uint64_t sign_bit, uint64_t biased_exponent, uint64_t significand)
+{
+    assert(sign_bit == 0 || sign_bit == 1);
+    assert(biased_exponent <= 0x7FF);
+    assert(significand <= 0x000FFFFFFFFFFFFF);
+
+    uint64_t bits = 0;
+
+    bits |= sign_bit << 63;
+    bits |= biased_exponent << 52;
+    bits |= significand;
+
+    return reinterpret_bits<double>(bits);
+}
+
+// ldexp -- convert f * 2^e to IEEE double precision
+double make_double(uint64_t f, int e)
+{
+    constexpr uint64_t kHiddenBit               = 0x0010000000000000;
+    constexpr uint64_t kSignificandMask         = 0x000FFFFFFFFFFFFF;
+    constexpr int      kPhysicalSignificandSize = 52;  // Excludes the hidden bit.
+    constexpr int      kExponentBias            = 0x3FF + kPhysicalSignificandSize;
+    constexpr int      kDenormalExponent        = 1     - kExponentBias;
+    constexpr int      kMaxExponent             = 0x7FF - kExponentBias;
+
+    while (f > kHiddenBit + kSignificandMask)
+    {
+        f >>= 1;
+        e++;
+    }
+    if (e >= kMaxExponent)
+    {
+        return std::numeric_limits<double>::infinity();
+    }
+    if (e < kDenormalExponent)
+    {
+        return 0.0;
+    }
+    while (e > kDenormalExponent && (f & kHiddenBit) == 0)
+    {
+        f <<= 1;
+        e--;
+    }
+
+    const uint64_t biased_exponent = (e == kDenormalExponent && (f & kHiddenBit) == 0)
+                                     ? 0
+                                     : static_cast<uint64_t>(e + kExponentBias);
+
+    const uint64_t bits = (f & kSignificandMask) | (biased_exponent << kPhysicalSignificandSize);
+    return reinterpret_bits<double>(bits);
+}
+} // namespace
+
+TEST_CASE("digit gen")
+{
+    SECTION("single precision")
+    {
+        auto check_float = [](float number, const std::string & digits, int expected_exponent)
+        {
+            CAPTURE(number)
+            CAPTURE(digits)
+            CAPTURE(expected_exponent)
+
+            std::array<char, 32> buf{};
+            int len = 0;
+            int exponent = 0;
+            nlohmann::detail::dtoa_impl::grisu2(buf.data(), len, exponent, number);
+
+            CHECK(digits == std::string(buf.data(), buf.data() + len));
+            CHECK(expected_exponent == exponent);
+        };
+
+        check_float(make_float(0,   0, 0x00000001),        "1", -45); // min denormal
+        check_float(make_float(0,   0, 0x007FFFFF), "11754942", -45); // max denormal
+        check_float(make_float(0,   1, 0x00000000), "11754944", -45); // min normal
+        check_float(make_float(0,   1, 0x00000001), "11754945", -45);
+        check_float(make_float(0,   1, 0x007FFFFF), "23509886", -45);
+        check_float(make_float(0,   2, 0x00000000), "23509887", -45);
+        check_float(make_float(0,   2, 0x00000001),  "2350989", -44);
+        check_float(make_float(0,  24, 0x00000000), "98607613", -39); // fail if no special case in normalized boundaries
+        check_float(make_float(0,  30, 0x00000000), "63108872", -37); // fail if no special case in normalized boundaries
+        check_float(make_float(0,  31, 0x00000000), "12621775", -36); // fail if no special case in normalized boundaries
+        check_float(make_float(0,  57, 0x00000000), "84703295", -29); // fail if no special case in normalized boundaries
+        check_float(make_float(0, 254, 0x007FFFFE), "34028233",  31);
+        check_float(make_float(0, 254, 0x007FFFFF), "34028235",  31); // max normal
+
+        // V. Paxson and W. Kahan, "A Program for Testing IEEE Binary-Decimal Conversion", manuscript, May 1991,
+        // ftp://ftp.ee.lbl.gov/testbase-report.ps.Z    (report)
+        // ftp://ftp.ee.lbl.gov/testbase.tar.Z          (program)
+
+        // Table 16: Stress Inputs for Converting 24-bit Binary to Decimal, < 1/2 ULP
+        check_float(make_float(12676506, -102),       "25", -25);
+        check_float(make_float(12676506, -103),      "125", -26);
+        check_float(make_float(15445013,   86),     "1195",  30);
+        check_float(make_float(13734123, -138),    "39415", -39);
+        check_float(make_float(12428269, -130),   "913085", -38);
+        check_float(make_float(15334037, -146),  "1719005", -43);
+        check_float(make_float(11518287,  -41), "52379105", -13);
+        check_float(make_float(12584953, -145),  "2821644", -43);
+        check_float(make_float(15961084, -125), "37524328", -38);
+        check_float(make_float(14915817, -146), "16721209", -44);
+        check_float(make_float(10845484, -102), "21388946", -31);
+        check_float(make_float(16431059,  -61),  "7125836", -18);
+
+        // Table 17: Stress Inputs for Converting 24-bit Binary to Decimal, > 1/2 ULP
+        check_float(make_float(16093626,   69),       "95",  26);
+        check_float(make_float( 9983778,   25),      "335",  12);
+        check_float(make_float(12745034,  104),     "2585",  35);
+        check_float(make_float(12706553,   72),    "60005",  24);
+        check_float(make_float(11005028,   45),   "387205",  15);
+        check_float(make_float(15059547,   71),  "3555835",  22);
+        check_float(make_float(16015691,  -99), "25268305", -30);
+        check_float(make_float( 8667859,   56),  "6245851",  17);
+        check_float(make_float(14855922,  -82), "30721327", -25);
+        check_float(make_float(14855922,  -83), "15360663", -25);
+        check_float(make_float(10144164, -110),   "781478", -32);
+        check_float(make_float(13248074,   95), "52481028",  28);
+    }
+
+    SECTION("double precision")
+    {
+        auto check_double = [](double number, const std::string & digits, int expected_exponent)
+        {
+            CAPTURE(number)
+            CAPTURE(digits)
+            CAPTURE(expected_exponent)
+
+            std::array<char, 32> buf{};
+            int len = 0;
+            int exponent = 0;
+            nlohmann::detail::dtoa_impl::grisu2(buf.data(), len, exponent, number);
+
+            CHECK(digits == std::string(buf.data(), buf.data() + len));
+            CHECK(expected_exponent == exponent);
+        };
+
+        check_double(make_double(0,    0, 0x0000000000000001),                 "5", -324); // min denormal
+        check_double(make_double(0,    0, 0x000FFFFFFFFFFFFF),  "2225073858507201", -323); // max denormal
+        check_double(make_double(0,    1, 0x0000000000000000), "22250738585072014", -324); // min normal
+        check_double(make_double(0,    1, 0x0000000000000001),  "2225073858507202", -323);
+        check_double(make_double(0,    1, 0x000FFFFFFFFFFFFF), "44501477170144023", -324);
+        check_double(make_double(0,    2, 0x0000000000000000),  "4450147717014403", -323);
+        check_double(make_double(0,    2, 0x0000000000000001),  "4450147717014404", -323);
+        check_double(make_double(0,    4, 0x0000000000000000), "17800590868057611", -323); // fail if no special case in normalized boundaries
+        check_double(make_double(0,    5, 0x0000000000000000), "35601181736115222", -323); // fail if no special case in normalized boundaries
+        check_double(make_double(0,    6, 0x0000000000000000),  "7120236347223045", -322); // fail if no special case in normalized boundaries
+        check_double(make_double(0,   10, 0x0000000000000000), "11392378155556871", -321); // fail if no special case in normalized boundaries
+        check_double(make_double(0, 2046, 0x000FFFFFFFFFFFFE), "17976931348623155",  292);
+        check_double(make_double(0, 2046, 0x000FFFFFFFFFFFFF), "17976931348623157",  292); // max normal
+
+        // Test different paths in DigitGen
+        check_double(                  10000,                 "1",    4);
+        check_double(                1200000,                "12",    5);
+        check_double(4.9406564584124654e-324,                 "5", -324); // exit integral loop
+        check_double(2.2250738585072009e-308,  "2225073858507201", -323); // exit fractional loop
+        check_double(   1.82877982605164e-99,   "182877982605164", -113);
+        check_double( 1.1505466208671903e-09, "11505466208671903",  -25);
+        check_double( 5.5645893133766722e+20,  "5564589313376672",    5);
+        check_double(     53.034830388866226, "53034830388866226",  -15);
+        check_double(  0.0021066531670178605, "21066531670178605",  -19);
+
+        // V. Paxson and W. Kahan, "A Program for Testing IEEE Binary-Decimal Conversion", manuscript, May 1991,
+        // ftp://ftp.ee.lbl.gov/testbase-report.ps.Z    (report)
+        // ftp://ftp.ee.lbl.gov/testbase.tar.Z          (program)
+
+        // Table 3: Stress Inputs for Converting 53-bit Binary to Decimal, < 1/2 ULP
+        check_double(make_double(8511030020275656,  -342) /*                9.5e-088 */,                "95",  -89);
+        check_double(make_double(5201988407066741,  -824) /*               4.65e-233 */,               "465", -235);
+        check_double(make_double(6406892948269899,  +237) /*              1.415e+087 */,              "1415",   84);
+        check_double(make_double(8431154198732492,   +72) /*             3.9815e+037 */,             "39815",   33);
+        check_double(make_double(6475049196144587,   +99) /*            4.10405e+045 */,            "410405",   40);
+        check_double(make_double(8274307542972842,  +726) /*           2.920845e+234 */,           "2920845",  228);
+        check_double(make_double(5381065484265332,  -456) /*          2.8919465e-122 */,          "28919465", -129);
+        check_double(make_double(6761728585499734, -1057) /*         4.37877185e-303 */,         "437877185", -311);
+        check_double(make_double(7976538478610756,  +376) /*        1.227701635e+129 */,        "1227701635",  120);
+        check_double(make_double(5982403858958067,  +377) /*       1.8415524525e+129 */,       "18415524525",  119);
+        check_double(make_double(5536995190630837,   +93) /*      5.48357443505e+043 */,      "548357443505",   32);
+        check_double(make_double(7225450889282194,  +710) /*     3.891901811465e+229 */,     "3891901811465",  217);
+        check_double(make_double(7225450889282194,  +709) /*    1.9459509057325e+229 */,    "19459509057325",  216);
+        check_double(make_double(8703372741147379,  +117) /*   1.44609583816055e+051 */,   "144609583816055",   37);
+        check_double(make_double(8944262675275217, -1001) /*  4.173677474585315e-286 */,  "4173677474585315", -301);
+        check_double(make_double(7459803696087692,  -707) /* 1.1079507728788885e-197 */, "11079507728788885", -213);
+        check_double(make_double(6080469016670379,  -381) /*  1.234550136632744e-099 */,  "1234550136632744", -114);
+        check_double(make_double(8385515147034757,  +721) /* 9.2503171196036502e+232 */,   "925031711960365",  218);
+        check_double(make_double(7514216811389786,  -828) /* 4.1980471502848898e-234 */,   "419804715028489", -248);
+        check_double(make_double(8397297803260511,  -345) /* 1.1716315319786511e-088 */, "11716315319786511", -104);
+        check_double(make_double(6733459239310543,  +202) /* 4.3281007284461249e+076 */,  "4328100728446125",   61);
+        check_double(make_double(8091450587292794,  -473) /* 3.3177101181600311e-127 */,  "3317710118160031", -142);
+
+        // Table 4: Stress Inputs for Converting 53-bit Binary to Decimal, > 1/2 ULP
+        check_double(make_double(6567258882077402,  +952) /*                2.5e+302 */,                "25",  301);
+        check_double(make_double(6712731423444934,  +535) /*               7.55e+176 */,               "755",  174);
+        check_double(make_double(6712731423444934,  +534) /*              3.775e+176 */,              "3775",  173);
+        check_double(make_double(5298405411573037,  -957) /*             4.3495e-273 */,             "43495", -277);
+        check_double(make_double(5137311167659507,  -144) /*            2.30365e-028 */,            "230365",  -33);
+        check_double(make_double(6722280709661868,  +363) /*           1.263005e+125 */,           "1263005",  119);
+        check_double(make_double(5344436398034927,  -169) /*          7.1422105e-036 */,          "71422105",  -43);
+        check_double(make_double(8369123604277281,  -853) /*         1.39345735e-241 */,         "139345735", -249);
+        check_double(make_double(8995822108487663,  -780) /*        1.414634485e-219 */,        "1414634485", -228);
+        check_double(make_double(8942832835564782,  -383) /*       4.5392779195e-100 */,       "45392779195", -110);
+        check_double(make_double(8942832835564782,  -384) /*      2.26963895975e-100 */,      "226963895975", -111);
+        check_double(make_double(8942832835564782,  -385) /*     1.134819479875e-100 */,     "1134819479875", -112);
+        check_double(make_double(6965949469487146,  -249) /*    7.7003665618895e-060 */,    "77003665618895",  -73);
+        check_double(make_double(6965949469487146,  -250) /*   3.85018328094475e-060 */,   "385018328094475",  -74);
+        check_double(make_double(6965949469487146,  -251) /*  1.925091640472375e-060 */,  "1925091640472375",  -75);
+        check_double(make_double(7487252720986826,  +548) /* 6.8985865317742005e+180 */, "68985865317742005",  164);
+        check_double(make_double(5592117679628511,  +164) /* 1.3076622631878654e+065 */, "13076622631878654",   49);
+        check_double(make_double(8887055249355788,  +665) /* 1.3605202075612124e+216 */, "13605202075612124",  200);
+        check_double(make_double(6994187472632449,  +690) /* 3.5928102174759597e+223 */, "35928102174759597",  207);
+        check_double(make_double(8797576579012143,  +588) /* 8.9125197712484552e+192 */,  "8912519771248455",  177);
+        check_double(make_double(7363326733505337,  +272) /* 5.5876975736230114e+097 */, "55876975736230114",   81);
+        check_double(make_double(8549497411294502,  -448) /* 1.1762578307285404e-119 */, "11762578307285404", -135);
+
+        // Table 20: Stress Inputs for Converting 56-bit Binary to Decimal, < 1/2 ULP
+        check_double(make_double(50883641005312716, -172) /* 8.4999999999999993e-036 */,  "8499999999999999",  -51);
+        check_double(make_double(38162730753984537, -170) /* 2.5499999999999999e-035 */,               "255",  -37);
+        check_double(make_double(50832789069151999, -101) /* 2.0049999999999997e-014 */, "20049999999999997",  -30);
+        check_double(make_double(51822367833714164, -109) /* 7.9844999999999994e-017 */,  "7984499999999999",  -32);
+        check_double(make_double(66840152193508133, -172) /* 1.1165499999999999e-035 */, "11165499999999999",  -51);
+        check_double(make_double(55111239245584393, -138) /*           1.581615e-025 */,           "1581615",  -31);
+        check_double(make_double(71704866733321482, -112) /*          1.3809855e-017 */,          "13809855",  -24);
+        check_double(make_double(67160949328233173, -142) /* 1.2046404499999999e-026 */, "12046404499999999",  -42);
+        check_double(make_double(53237141308040189, -152) /* 9.3251405449999991e-030 */,  "9325140544999999",  -45);
+        check_double(make_double(62785329394975786, -112) /*       1.2092014595e-017 */,       "12092014595",  -27);
+        check_double(make_double(48367680154689523,  -77) /* 3.2007045838499998e-007 */,      "320070458385",  -18);
+        check_double(make_double(42552223180606797, -102) /*  8.391946324354999e-015 */,  "8391946324354999",  -30);
+        check_double(make_double(63626356173011241, -112) /*    1.2253990460585e-017 */,    "12253990460585",  -30);
+        check_double(make_double(43566388595783643,  -99) /* 6.8735641489760495e-014 */,   "687356414897605",  -28);
+        check_double(make_double(54512669636675272, -159) /*  7.459816430480385e-032 */,  "7459816430480385",  -47);
+        check_double(make_double(52306490527514614, -167) /* 2.7960588398142552e-034 */,  "2796058839814255",  -49);
+        check_double(make_double(52306490527514614, -168) /* 1.3980294199071276e-034 */, "13980294199071276",  -50);
+        check_double(make_double(41024721590449423,  -89) /* 6.6279012373057359e-011 */,  "6627901237305736",  -26);
+        check_double(make_double(37664020415894738, -132) /* 6.9177880043968072e-024 */,  "6917788004396807",  -39);
+        check_double(make_double(37549883692866294,  -93) /* 3.7915693108349708e-012 */,  "3791569310834971",  -27);
+        check_double(make_double(69124110374399839, -104) /* 3.4080817676591365e-015 */, "34080817676591365",  -31);
+        check_double(make_double(69124110374399839, -105) /* 1.7040408838295683e-015 */, "17040408838295683",  -31);
+
+        // Table 21: Stress Inputs for Converting 56-bit Binary to Decimal, > 1/2 ULP
+        check_double(make_double(49517601571415211,  -94) /* 2.4999999999999998e-012 */,                "25",  -13);
+        check_double(make_double(49517601571415211,  -95) /* 1.2499999999999999e-012 */,               "125",  -14);
+        check_double(make_double(54390733528642804, -133) /* 4.9949999999999996e-024 */, "49949999999999996",  -40); // shortest: 4995e-27
+        check_double(make_double(71805402319113924, -157) /* 3.9304999999999998e-031 */, "39304999999999998",  -47); // shortest: 39305e-35
+        check_double(make_double(40435277969631694, -179) /* 5.2770499999999992e-038 */,  "5277049999999999",  -53);
+        check_double(make_double(57241991568619049, -165) /*           1.223955e-033 */,           "1223955",  -39);
+        check_double(make_double(65224162876242886,  +58) /* 1.8799584999999998e+034 */, "18799584999999998",   18);
+        check_double(make_double(70173376848895368, -138) /*         2.01387715e-025 */,         "201387715",  -33);
+        check_double(make_double(37072848117383207,  -99) /* 5.8490641049999989e-014 */,  "5849064104999999",  -29);
+        check_double(make_double(56845051585389697, -176) /* 5.9349003054999999e-037 */,       "59349003055",  -47);
+        check_double(make_double(54791673366936431, -145) /* 1.2284718039499998e-027 */, "12284718039499998",  -43);
+        check_double(make_double(66800318669106231, -169) /* 8.9270767180849991e-035 */,  "8927076718084999",  -50);
+        check_double(make_double(66800318669106231, -170) /* 4.4635383590424995e-035 */, "44635383590424995",  -51);
+        check_double(make_double(66574323440112438, -119) /* 1.0016990862549499e-019 */, "10016990862549499",  -35);
+        check_double(make_double(65645179969330963, -173) /* 5.4829412628024647e-036 */,  "5482941262802465",  -51);
+        check_double(make_double(61847254334681076, -109) /* 9.5290783281036439e-017 */,  "9529078328103644",  -32);
+        check_double(make_double(39990712921393606, -145) /* 8.9662279366405553e-028 */,  "8966227936640555",  -43);
+        check_double(make_double(59292318184400283, -149) /* 8.3086234418058538e-029 */,  "8308623441805854",  -44);
+        check_double(make_double(69116558615326153, -143) /* 6.1985873566126555e-027 */, "61985873566126555",  -43);
+        check_double(make_double(69116558615326153, -144) /* 3.0992936783063277e-027 */, "30992936783063277",  -43);
+        check_double(make_double(39462549494468513, -152) /* 6.9123512506176015e-030 */,  "6912351250617602",  -45);
+        check_double(make_double(39462549494468513, -153) /* 3.4561756253088008e-030 */,  "3456175625308801",  -45);
+    }
+}
+
+TEST_CASE("formatting")
+{
+    SECTION("single precision")
+    {
+        auto check_float = [](float number, const std::string & expected)
+        {
+            std::array<char, 33> buf{};
+            char* end = nlohmann::detail::to_chars(buf.data(), buf.data() + 32, number); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+            std::string actual(buf.data(), end);
+
+            CHECK(actual == expected);
+        };
+        // %.9g
+        check_float( -1.2345e-22f, "-1.2345e-22"  ); // -1.23450004e-22
+        check_float( -1.2345e-21f, "-1.2345e-21"  ); // -1.23450002e-21
+        check_float( -1.2345e-20f, "-1.2345e-20"  ); // -1.23450002e-20
+        check_float( -1.2345e-19f, "-1.2345e-19"  ); // -1.23449999e-19
+        check_float( -1.2345e-18f, "-1.2345e-18"  ); // -1.23449996e-18
+        check_float( -1.2345e-17f, "-1.2345e-17"  ); // -1.23449998e-17
+        check_float( -1.2345e-16f, "-1.2345e-16"  ); // -1.23449996e-16
+        check_float( -1.2345e-15f, "-1.2345e-15"  ); // -1.23450002e-15
+        check_float( -1.2345e-14f, "-1.2345e-14"  ); // -1.23450004e-14
+        check_float( -1.2345e-13f, "-1.2345e-13"  ); // -1.23449997e-13
+        check_float( -1.2345e-12f, "-1.2345e-12"  ); // -1.23450002e-12
+        check_float( -1.2345e-11f, "-1.2345e-11"  ); // -1.2345e-11
+        check_float( -1.2345e-10f, "-1.2345e-10"  ); // -1.2345e-10
+        check_float( -1.2345e-9f,  "-1.2345e-09"  ); // -1.23449995e-09
+        check_float( -1.2345e-8f,  "-1.2345e-08"  ); // -1.23449997e-08
+        check_float( -1.2345e-7f,  "-1.2345e-07"  ); // -1.23449993e-07
+        check_float( -1.2345e-6f,  "-1.2345e-06"  ); // -1.23450002e-06
+        check_float( -1.2345e-5f,  "-1.2345e-05"  ); // -1.2345e-05
+        check_float( -1.2345e-4f,  "-0.00012345"  ); // -0.000123449994
+        check_float( -1.2345e-3f,  "-0.0012345"   ); // -0.00123449997
+        check_float( -1.2345e-2f,  "-0.012345"    ); // -0.0123450002
+        check_float( -1.2345e-1f,  "-0.12345"     ); // -0.123450004
+        check_float( -0.0f,        "-0.0"         ); // -0
+        check_float(  0.0f,         "0.0"         ); //  0
+        check_float(  1.2345e+0f,   "1.2345"      ); //  1.23450005
+        check_float(  1.2345e+1f,   "12.345"      ); //  12.3450003
+        check_float(  1.2345e+2f,   "123.45"      ); //  123.449997
+        check_float(  1.2345e+3f,   "1234.5"      ); //  1234.5
+        check_float(  1.2345e+4f,   "12345.0"     ); //  12345
+        check_float(  1.2345e+5f,   "123450.0"    ); //  123450
+        check_float(  1.2345e+6f,   "1.2345e+06"  ); //  1234500
+        check_float(  1.2345e+7f,   "1.2345e+07"  ); //  12345000
+        check_float(  1.2345e+8f,   "1.2345e+08"  ); //  123450000
+        check_float(  1.2345e+9f,   "1.2345e+09"  ); //  1.23449997e+09
+        check_float(  1.2345e+10f,  "1.2345e+10"  ); //  1.23449999e+10
+        check_float(  1.2345e+11f,  "1.2345e+11"  ); //  1.23449999e+11
+        check_float(  1.2345e+12f,  "1.2345e+12"  ); //  1.23450006e+12
+        check_float(  1.2345e+13f,  "1.2345e+13"  ); //  1.23449995e+13
+        check_float(  1.2345e+14f,  "1.2345e+14"  ); //  1.23450002e+14
+        check_float(  1.2345e+15f,  "1.2345e+15"  ); //  1.23450003e+15
+        check_float(  1.2345e+16f,  "1.2345e+16"  ); //  1.23449998e+16
+        check_float(  1.2345e+17f,  "1.2345e+17"  ); //  1.23449996e+17
+        check_float(  1.2345e+18f,  "1.2345e+18"  ); //  1.23450004e+18
+        check_float(  1.2345e+19f,  "1.2345e+19"  ); //  1.23449999e+19
+        check_float(  1.2345e+20f,  "1.2345e+20"  ); //  1.23449999e+20
+        check_float(  1.2345e+21f,  "1.2345e+21"  ); //  1.23449999e+21
+        check_float(  1.2345e+22f,  "1.2345e+22"  ); //  1.23450005e+22
+    }
+
+    SECTION("double precision")
+    {
+        auto check_double = [](double number, const std::string & expected)
+        {
+            std::array<char, 33> buf{};
+            char* end = nlohmann::detail::to_chars(buf.data(), buf.data() + 32, number); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+            std::string actual(buf.data(), end);
+
+            CHECK(actual == expected);
+        };
+        //                           dtoa                           %.15g                     %.17g                     shortest
+        check_double( -1.2345e-22,  "-1.2345e-22"             ); // -1.2345e-22               -1.2345000000000001e-22   -1.2345e-22
+        check_double( -1.2345e-21,  "-1.2345e-21"             ); // -1.2345e-21               -1.2345000000000001e-21   -1.2345e-21
+        check_double( -1.2345e-20,  "-1.2345e-20"             ); // -1.2345e-20               -1.2345e-20               -1.2345e-20
+        check_double( -1.2345e-19,  "-1.2345e-19"             ); // -1.2345e-19               -1.2345000000000001e-19   -1.2345e-19
+        check_double( -1.2345e-18,  "-1.2345e-18"             ); // -1.2345e-18               -1.2345000000000001e-18   -1.2345e-18
+        check_double( -1.2345e-17,  "-1.2345e-17"             ); // -1.2345e-17               -1.2345e-17               -1.2345e-17
+        check_double( -1.2345e-16,  "-1.2345e-16"             ); // -1.2345e-16               -1.2344999999999999e-16   -1.2345e-16
+        check_double( -1.2345e-15,  "-1.2345e-15"             ); // -1.2345e-15               -1.2345e-15               -1.2345e-15
+        check_double( -1.2345e-14,  "-1.2345e-14"             ); // -1.2345e-14               -1.2345e-14               -1.2345e-14
+        check_double( -1.2345e-13,  "-1.2345e-13"             ); // -1.2345e-13               -1.2344999999999999e-13   -1.2345e-13
+        check_double( -1.2345e-12,  "-1.2345e-12"             ); // -1.2345e-12               -1.2345e-12               -1.2345e-12
+        check_double( -1.2345e-11,  "-1.2345e-11"             ); // -1.2345e-11               -1.2345e-11               -1.2345e-11
+        check_double( -1.2345e-10,  "-1.2345e-10"             ); // -1.2345e-10               -1.2345e-10               -1.2345e-10
+        check_double( -1.2345e-9,   "-1.2345e-09"             ); // -1.2345e-09               -1.2345e-09               -1.2345e-9
+        check_double( -1.2345e-8,   "-1.2345e-08"             ); // -1.2345e-08               -1.2345000000000001e-08   -1.2345e-8
+        check_double( -1.2345e-7,   "-1.2345e-07"             ); // -1.2345e-07               -1.2345000000000001e-07   -1.2345e-7
+        check_double( -1.2345e-6,   "-1.2345e-06"             ); // -1.2345e-06               -1.2345e-06               -1.2345e-6
+        check_double( -1.2345e-5,   "-1.2345e-05"             ); // -1.2345e-05               -1.2345e-05               -1.2345e-5
+        check_double( -1.2345e-4,   "-0.00012345"             ); // -0.00012345               -0.00012344999999999999   -0.00012345
+        check_double( -1.2345e-3,   "-0.0012345"              ); // -0.0012345                -0.0012344999999999999    -0.0012345
+        check_double( -1.2345e-2,   "-0.012345"               ); // -0.012345                 -0.012345                 -0.012345
+        check_double( -1.2345e-1,   "-0.12345"                ); // -0.12345                  -0.12345                  -0.12345
+        check_double( -0.0,         "-0.0"                    ); // -0                        -0                        -0
+        check_double(  0.0,          "0.0"                    ); //  0                         0                         0
+        check_double(  1.2345e+0,    "1.2345"                 ); //  1.2345                    1.2344999999999999        1.2345
+        check_double(  1.2345e+1,    "12.345"                 ); //  12.345                    12.345000000000001        12.345
+        check_double(  1.2345e+2,    "123.45"                 ); //  123.45                    123.45                    123.45
+        check_double(  1.2345e+3,    "1234.5"                 ); //  1234.5                    1234.5                    1234.5
+        check_double(  1.2345e+4,    "12345.0"                ); //  12345                     12345                     12345
+        check_double(  1.2345e+5,    "123450.0"               ); //  123450                    123450                    123450
+        check_double(  1.2345e+6,    "1234500.0"              ); //  1234500                   1234500                   1234500
+        check_double(  1.2345e+7,    "12345000.0"             ); //  12345000                  12345000                  12345000
+        check_double(  1.2345e+8,    "123450000.0"            ); //  123450000                 123450000                 123450000
+        check_double(  1.2345e+9,    "1234500000.0"           ); //  1234500000                1234500000                1234500000
+        check_double(  1.2345e+10,   "12345000000.0"          ); //  12345000000               12345000000               12345000000
+        check_double(  1.2345e+11,   "123450000000.0"         ); //  123450000000              123450000000              123450000000
+        check_double(  1.2345e+12,   "1234500000000.0"        ); //  1234500000000             1234500000000             1234500000000
+        check_double(  1.2345e+13,   "12345000000000.0"       ); //  12345000000000            12345000000000            12345000000000
+        check_double(  1.2345e+14,   "123450000000000.0"      ); //  123450000000000           123450000000000           123450000000000
+        check_double(  1.2345e+15,   "1.2345e+15"             ); //  1.2345e+15                1234500000000000          1.2345e15
+        check_double(  1.2345e+16,   "1.2345e+16"             ); //  1.2345e+16                12345000000000000         1.2345e16
+        check_double(  1.2345e+17,   "1.2345e+17"             ); //  1.2345e+17                1.2345e+17                1.2345e17
+        check_double(  1.2345e+18,   "1.2345e+18"             ); //  1.2345e+18                1.2345e+18                1.2345e18
+        check_double(  1.2345e+19,   "1.2345e+19"             ); //  1.2345e+19                1.2345e+19                1.2345e19
+        check_double(  1.2345e+20,   "1.2345e+20"             ); //  1.2345e+20                1.2345e+20                1.2345e20
+        check_double(  1.2345e+21,   "1.2344999999999999e+21" ); //  1.2345e+21                1.2344999999999999e+21    1.2345e21
+        check_double(  1.2345e+22,   "1.2345e+22"             ); //  1.2345e+22                1.2345e+22                1.2345e22
+    }
+
+    SECTION("integer")
+    {
+        auto check_integer = [](std::int64_t number, const std::string & expected)
+        {
+            const nlohmann::json j = number;
+            CHECK(j.dump() == expected);
+        };
+
+        // edge cases
+        check_integer(INT64_MIN, "-9223372036854775808");
+        check_integer(INT64_MAX, "9223372036854775807");
+
+        // few random big integers
+        check_integer(-3456789012345678901LL, "-3456789012345678901");
+        check_integer(3456789012345678901LL, "3456789012345678901");
+        check_integer(-5678901234567890123LL, "-5678901234567890123");
+        check_integer(5678901234567890123LL, "5678901234567890123");
+
+        // integers with various digit counts
+        check_integer(-1000000000000000000LL, "-1000000000000000000");
+        check_integer(-100000000000000000LL, "-100000000000000000");
+        check_integer(-10000000000000000LL, "-10000000000000000");
+        check_integer(-1000000000000000LL, "-1000000000000000");
+        check_integer(-100000000000000LL, "-100000000000000");
+        check_integer(-10000000000000LL, "-10000000000000");
+        check_integer(-1000000000000LL, "-1000000000000");
+        check_integer(-100000000000LL, "-100000000000");
+        check_integer(-10000000000LL, "-10000000000");
+        check_integer(-1000000000LL, "-1000000000");
+        check_integer(-100000000LL, "-100000000");
+        check_integer(-10000000LL, "-10000000");
+        check_integer(-1000000LL, "-1000000");
+        check_integer(-100000LL, "-100000");
+        check_integer(-10000LL, "-10000");
+        check_integer(-1000LL, "-1000");
+        check_integer(-100LL, "-100");
+        check_integer(-10LL, "-10");
+        check_integer(-1LL, "-1");
+        check_integer(0, "0");
+        check_integer(1LL, "1");
+        check_integer(10LL, "10");
+        check_integer(100LL, "100");
+        check_integer(1000LL, "1000");
+        check_integer(10000LL, "10000");
+        check_integer(100000LL, "100000");
+        check_integer(1000000LL, "1000000");
+        check_integer(10000000LL, "10000000");
+        check_integer(100000000LL, "100000000");
+        check_integer(1000000000LL, "1000000000");
+        check_integer(10000000000LL, "10000000000");
+        check_integer(100000000000LL, "100000000000");
+        check_integer(1000000000000LL, "1000000000000");
+        check_integer(10000000000000LL, "10000000000000");
+        check_integer(100000000000000LL, "100000000000000");
+        check_integer(1000000000000000LL, "1000000000000000");
+        check_integer(10000000000000000LL, "10000000000000000");
+        check_integer(100000000000000000LL, "100000000000000000");
+        check_integer(1000000000000000000LL, "1000000000000000000");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-type_traits.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-type_traits.cpp
new file mode 100644
index 00000000..c672b6b3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-type_traits.cpp
@@ -0,0 +1,56 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#if JSON_TEST_USING_MULTIPLE_HEADERS
+    #include <nlohmann/detail/meta/type_traits.hpp>
+#else
+    #include <nlohmann/json.hpp>
+#endif
+
+TEST_CASE("type traits")
+{
+    SECTION("is_c_string")
+    {
+        using nlohmann::detail::is_c_string;
+        using nlohmann::detail::is_c_string_uncvref;
+
+        SECTION("char *")
+        {
+            CHECK(is_c_string<char*>::value);
+            CHECK(is_c_string<const char*>::value);
+            CHECK(is_c_string<char* const>::value);
+            CHECK(is_c_string<const char* const>::value);
+
+            CHECK_FALSE(is_c_string<char*&>::value);
+            CHECK_FALSE(is_c_string<const char*&>::value);
+            CHECK_FALSE(is_c_string<char* const&>::value);
+            CHECK_FALSE(is_c_string<const char* const&>::value);
+
+            CHECK(is_c_string_uncvref<char*&>::value);
+            CHECK(is_c_string_uncvref<const char*&>::value);
+            CHECK(is_c_string_uncvref<char* const&>::value);
+            CHECK(is_c_string_uncvref<const char* const&>::value);
+        }
+
+        SECTION("char[]")
+        {
+            // NOLINTBEGIN(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+            CHECK(is_c_string<char[]>::value);
+            CHECK(is_c_string<const char[]>::value);
+
+            CHECK_FALSE(is_c_string<char(&)[]>::value);
+            CHECK_FALSE(is_c_string<const char(&)[]>::value);
+
+            CHECK(is_c_string_uncvref<char(&)[]>::value);
+            CHECK(is_c_string_uncvref<const char(&)[]>::value);
+            // NOLINTEND(hicpp-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-c-arrays)
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ubjson.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ubjson.cpp
new file mode 100644
index 00000000..a9d931cd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-ubjson.cpp
@@ -0,0 +1,2547 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <iostream>
+#include <fstream>
+#include <set>
+#include "make_test_data_available.hpp"
+#include "test_utils.hpp"
+
+namespace
+{
+class SaxCountdown
+{
+  public:
+    explicit SaxCountdown(const int count) : events_left(count)
+    {}
+
+    bool null()
+    {
+        return events_left-- > 0;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_integer(json::number_integer_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_unsigned(json::number_unsigned_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool number_float(json::number_float_t /*unused*/, const std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool string(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool binary(std::vector<std::uint8_t>& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_object(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool key(std::string& /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_object()
+    {
+        return events_left-- > 0;
+    }
+
+    bool start_array(std::size_t /*unused*/)
+    {
+        return events_left-- > 0;
+    }
+
+    bool end_array()
+    {
+        return events_left-- > 0;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const json::exception& /*unused*/) // NOLINT(readability-convert-member-functions-to-static)
+    {
+        return false;
+    }
+
+  private:
+    int events_left = 0;
+};
+} // namespace
+
+TEST_CASE("UBJSON")
+{
+    SECTION("individual values")
+    {
+        SECTION("discarded")
+        {
+            // discarded values are not serialized
+            json const j = json::value_t::discarded;
+            const auto result = json::to_ubjson(j);
+            CHECK(result.empty());
+        }
+
+        SECTION("null")
+        {
+            json const j = nullptr;
+            std::vector<uint8_t> expected = {'Z'};
+            const auto result = json::to_ubjson(j);
+            CHECK(result == expected);
+
+            // roundtrip
+            CHECK(json::from_ubjson(result) == j);
+            CHECK(json::from_ubjson(result, true, false) == j);
+        }
+
+        SECTION("boolean")
+        {
+            SECTION("true")
+            {
+                json const j = true;
+                std::vector<uint8_t> const expected = {'T'};
+                const auto result = json::to_ubjson(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_ubjson(result) == j);
+                CHECK(json::from_ubjson(result, true, false) == j);
+            }
+
+            SECTION("false")
+            {
+                json const j = false;
+                std::vector<uint8_t> const expected = {'F'};
+                const auto result = json::to_ubjson(j);
+                CHECK(result == expected);
+
+                // roundtrip
+                CHECK(json::from_ubjson(result) == j);
+                CHECK(json::from_ubjson(result, true, false) == j);
+            }
+        }
+
+        SECTION("number")
+        {
+            SECTION("signed")
+            {
+                SECTION("-9223372036854775808..-2147483649 (int64)")
+                {
+                    std::vector<int64_t> const numbers
+                    {
+                        (std::numeric_limits<int64_t>::min)(),
+                        -1000000000000000000LL,
+                        -100000000000000000LL,
+                        -10000000000000000LL,
+                        -1000000000000000LL,
+                        -100000000000000LL,
+                        -10000000000000LL,
+                        -1000000000000LL,
+                        -100000000000LL,
+                        -10000000000LL,
+                        -2147483649LL,
+                    };
+                    for (auto i : numbers)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('L'),
+                            static_cast<uint8_t>((i >> 56) & 0xff),
+                            static_cast<uint8_t>((i >> 48) & 0xff),
+                            static_cast<uint8_t>((i >> 40) & 0xff),
+                            static_cast<uint8_t>((i >> 32) & 0xff),
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'L');
+                        int64_t const restored = (static_cast<int64_t>(result[1]) << 070) +
+                                                 (static_cast<int64_t>(result[2]) << 060) +
+                                                 (static_cast<int64_t>(result[3]) << 050) +
+                                                 (static_cast<int64_t>(result[4]) << 040) +
+                                                 (static_cast<int64_t>(result[5]) << 030) +
+                                                 (static_cast<int64_t>(result[6]) << 020) +
+                                                 (static_cast<int64_t>(result[7]) << 010) +
+                                                 static_cast<int64_t>(result[8]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-2147483648..-32769 (int32)")
+                {
+                    std::vector<int32_t> numbers;
+                    numbers.push_back(-32769);
+                    numbers.push_back(-100000);
+                    numbers.push_back(-1000000);
+                    numbers.push_back(-10000000);
+                    numbers.push_back(-100000000);
+                    numbers.push_back(-1000000000);
+                    numbers.push_back(-2147483647 - 1); // https://stackoverflow.com/a/29356002/266378
+                    for (auto i : numbers)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('l'),
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'l');
+                        int32_t const restored = (static_cast<int32_t>(result[1]) << 030) +
+                                                 (static_cast<int32_t>(result[2]) << 020) +
+                                                 (static_cast<int32_t>(result[3]) << 010) +
+                                                 static_cast<int32_t>(result[4]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-32768..-129 (int16)")
+                {
+                    for (int32_t i = -32768; i <= -129; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('I'),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'I');
+                        auto const restored = static_cast<int16_t>(((result[1] << 8) + result[2]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("-9263 (int16)")
+                {
+                    json const j = -9263;
+                    std::vector<uint8_t> expected = {'I', 0xdb, 0xd1};
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == 3);
+
+                    // check individual bytes
+                    CHECK(result[0] == 'I');
+                    auto const restored = static_cast<int16_t>(((result[1] << 8) + result[2]));
+                    CHECK(restored == -9263);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("-128..-1 (int8)")
+                {
+                    for (auto i = -128; i <= -1; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'i',
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'i');
+                        CHECK(static_cast<int8_t>(result[1]) == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("0..127 (int8)")
+                {
+                    for (size_t i = 0; i <= 127; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('i'),
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'i');
+                        CHECK(result[1] == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("128..255 (uint8)")
+                {
+                    for (size_t i = 128; i <= 255; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('U'),
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'U');
+                        CHECK(result[1] == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("256..32767 (int16)")
+                {
+                    for (size_t i = 256; i <= 32767; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            static_cast<uint8_t>('I'),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'I');
+                        auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("65536..2147483647 (int32)")
+                {
+                    for (uint32_t i :
+                            {
+                                65536u, 77777u, 1048576u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'l',
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'l');
+                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) +
+                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) +
+                                                  static_cast<uint32_t>(result[4]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("2147483648..9223372036854775807 (int64)")
+                {
+                    std::vector<uint64_t> const v = {2147483648ul, 9223372036854775807ul};
+                    for (uint64_t i : v)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json j = -1;
+                        j.get_ref<json::number_integer_t&>() = static_cast<json::number_integer_t>(i);
+
+                        // check type
+                        CHECK(j.is_number_integer());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'L',
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'L');
+                        uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) +
+                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) +
+                                                  (static_cast<uint64_t>(result[6]) << 020) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) +
+                                                  static_cast<uint64_t>(result[8]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+            }
+
+            SECTION("unsigned")
+            {
+                SECTION("0..127 (int8)")
+                {
+                    for (size_t i = 0; i <= 127; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'i',
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'i');
+                        auto const restored = static_cast<uint8_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("128..255 (uint8)")
+                {
+                    for (size_t i = 128; i <= 255; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'U',
+                            static_cast<uint8_t>(i),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 2);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'U');
+                        auto const restored = static_cast<uint8_t>(result[1]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("256..32767 (int16)")
+                {
+                    for (size_t i = 256; i <= 32767; ++i)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'I',
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 3);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'I');
+                        auto const restored = static_cast<uint16_t>((static_cast<uint8_t>(result[1]) * 256) + static_cast<uint8_t>(result[2]));
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("65536..2147483647 (int32)")
+                {
+                    for (uint32_t i :
+                            {
+                                65536u, 77777u, 1048576u
+                            })
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with unsigned integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'l',
+                            static_cast<uint8_t>((i >> 24) & 0xff),
+                            static_cast<uint8_t>((i >> 16) & 0xff),
+                            static_cast<uint8_t>((i >> 8) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 5);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'l');
+                        uint32_t const restored = (static_cast<uint32_t>(result[1]) << 030) +
+                                                  (static_cast<uint32_t>(result[2]) << 020) +
+                                                  (static_cast<uint32_t>(result[3]) << 010) +
+                                                  static_cast<uint32_t>(result[4]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+
+                SECTION("2147483648..9223372036854775807 (int64)")
+                {
+                    std::vector<uint64_t> const v = {2147483648ul, 9223372036854775807ul};
+                    for (uint64_t i : v)
+                    {
+                        CAPTURE(i)
+
+                        // create JSON value with integer number
+                        json const j = i;
+
+                        // check type
+                        CHECK(j.is_number_unsigned());
+
+                        // create expected byte vector
+                        std::vector<uint8_t> const expected
+                        {
+                            'L',
+                            static_cast<uint8_t>((i >> 070) & 0xff),
+                            static_cast<uint8_t>((i >> 060) & 0xff),
+                            static_cast<uint8_t>((i >> 050) & 0xff),
+                            static_cast<uint8_t>((i >> 040) & 0xff),
+                            static_cast<uint8_t>((i >> 030) & 0xff),
+                            static_cast<uint8_t>((i >> 020) & 0xff),
+                            static_cast<uint8_t>((i >> 010) & 0xff),
+                            static_cast<uint8_t>(i & 0xff),
+                        };
+
+                        // compare result + size
+                        const auto result = json::to_ubjson(j);
+                        CHECK(result == expected);
+                        CHECK(result.size() == 9);
+
+                        // check individual bytes
+                        CHECK(result[0] == 'L');
+                        uint64_t const restored = (static_cast<uint64_t>(result[1]) << 070) +
+                                                  (static_cast<uint64_t>(result[2]) << 060) +
+                                                  (static_cast<uint64_t>(result[3]) << 050) +
+                                                  (static_cast<uint64_t>(result[4]) << 040) +
+                                                  (static_cast<uint64_t>(result[5]) << 030) +
+                                                  (static_cast<uint64_t>(result[6]) << 020) +
+                                                  (static_cast<uint64_t>(result[7]) << 010) +
+                                                  static_cast<uint64_t>(result[8]);
+                        CHECK(restored == i);
+
+                        // roundtrip
+                        CHECK(json::from_ubjson(result) == j);
+                        CHECK(json::from_ubjson(result, true, false) == j);
+                    }
+                }
+            }
+
+            SECTION("float64")
+            {
+                SECTION("3.1415925")
+                {
+                    double v = 3.1415925;
+                    json const j = v;
+                    std::vector<uint8_t> expected =
+                    {
+                        'D', 0x40, 0x09, 0x21, 0xfb, 0x3f, 0xa6, 0xde, 0xfc
+                    };
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result) == v);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("high-precision number")
+            {
+                SECTION("unsigned integer number")
+                {
+                    std::vector<uint8_t> const vec = {'H', 'i', 0x14, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0'};
+                    const auto j = json::from_ubjson(vec);
+                    CHECK(j.is_number_unsigned());
+                    CHECK(j.dump() == "12345678901234567890");
+                }
+
+                SECTION("signed integer number")
+                {
+                    std::vector<uint8_t> const vec = {'H', 'i', 0x13, '-', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8'};
+                    const auto j = json::from_ubjson(vec);
+                    CHECK(j.is_number_integer());
+                    CHECK(j.dump() == "-123456789012345678");
+                }
+
+                SECTION("floating-point number")
+                {
+                    std::vector<uint8_t> const vec = {'H', 'i', 0x16, '3', '.', '1', '4', '1', '5', '9',  '2', '6', '5', '3', '5', '8', '9',  '7', '9', '3', '2', '3', '8', '4',  '6'};
+                    const auto j = json::from_ubjson(vec);
+                    CHECK(j.is_number_float());
+                    CHECK(j.dump() == "3.141592653589793");
+                }
+
+                SECTION("errors")
+                {
+                    // error while parsing length
+                    std::vector<uint8_t> const vec0 = {'H', 'i'};
+                    CHECK(json::from_ubjson(vec0, true, false).is_discarded());
+                    // error while parsing string
+                    std::vector<uint8_t> const vec1 = {'H', 'i', '1'};
+                    CHECK(json::from_ubjson(vec1, true, false).is_discarded());
+
+                    json _;
+                    std::vector<uint8_t> const vec2 = {'H', 'i', 2, '1', 'A', '3'};
+                    CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vec2), "[json.exception.parse_error.115] parse error at byte 5: syntax error while parsing UBJSON high-precision number: invalid number text: 1A", json::parse_error);
+                    std::vector<uint8_t> const vec3 = {'H', 'i', 2, '1', '.'};
+                    CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vec3), "[json.exception.parse_error.115] parse error at byte 5: syntax error while parsing UBJSON high-precision number: invalid number text: 1.", json::parse_error);
+                    std::vector<uint8_t> const vec4 = {'H', 2, '1', '0'};
+                    CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vec4), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON size: expected length type specification (U, i, I, l, L) after '#'; last byte: 0x02", json::parse_error);
+                }
+
+                SECTION("serialization")
+                {
+                    // number that does not fit int64
+                    json const j = 11111111111111111111ULL;
+                    CHECK(j.is_number_unsigned());
+
+                    // number will be serialized to high-precision number
+                    const auto vec = json::to_ubjson(j);
+                    std::vector<uint8_t> expected = {'H', 'i', 0x14, '1',  '1',  '1',  '1',  '1', '1',  '1',  '1',  '1',  '1', '1',  '1',  '1',  '1',  '1', '1',  '1',  '1',  '1',  '1'};
+                    CHECK(vec == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(vec) == j);
+                }
+            }
+        }
+
+        SECTION("string")
+        {
+            SECTION("N = 0..127")
+            {
+                for (size_t N = 0; N <= 127; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back('S');
+                    expected.push_back('i');
+                    expected.push_back(static_cast<uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 3);
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 128..255")
+            {
+                for (size_t N = 128; N <= 255; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back('S');
+                    expected.push_back('U');
+                    expected.push_back(static_cast<uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back('x');
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 3);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 256..32767")
+            {
+                for (size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 32767u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), 'I');
+                    expected.insert(expected.begin(), 'S');
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 4);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("N = 65536..2147483647")
+            {
+                for (size_t N :
+                        {
+                            65536u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with string containing of N * 'x'
+                    const auto s = std::string(N, 'x');
+                    json const j = s;
+
+                    // create expected byte vector (hack: create string first)
+                    std::vector<uint8_t> expected(N, 'x');
+                    // reverse order of commands, because we insert at begin()
+                    expected.insert(expected.begin(), static_cast<uint8_t>(N & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 8) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 16) & 0xff));
+                    expected.insert(expected.begin(), static_cast<uint8_t>((N >> 24) & 0xff));
+                    expected.insert(expected.begin(), 'l');
+                    expected.insert(expected.begin(), 'S');
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 6);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+        }
+
+        SECTION("binary")
+        {
+            SECTION("N = 0..127")
+            {
+                for (std::size_t N = 0; N <= 127; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<std::uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>('['));
+                    if (N != 0)
+                    {
+                        expected.push_back(static_cast<std::uint8_t>('$'));
+                        expected.push_back(static_cast<std::uint8_t>('U'));
+                    }
+                    expected.push_back(static_cast<std::uint8_t>('#'));
+                    expected.push_back(static_cast<std::uint8_t>('i'));
+                    expected.push_back(static_cast<std::uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(0x78);
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+                    if (N == 0)
+                    {
+                        CHECK(result.size() == N + 4);
+                    }
+                    else
+                    {
+                        CHECK(result.size() == N + 6);
+                    }
+
+                    // check that no null byte is appended
+                    if (N > 0)
+                    {
+                        CHECK(result.back() != '\x00');
+                    }
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_ubjson(result) == j_out);
+                    CHECK(json::from_ubjson(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("N = 128..255")
+            {
+                for (std::size_t N = 128; N <= 255; ++N)
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>('['));
+                    expected.push_back(static_cast<std::uint8_t>('$'));
+                    expected.push_back(static_cast<std::uint8_t>('U'));
+                    expected.push_back(static_cast<std::uint8_t>('#'));
+                    expected.push_back(static_cast<std::uint8_t>('U'));
+                    expected.push_back(static_cast<std::uint8_t>(N));
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(0x78);
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 6);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_ubjson(result) == j_out);
+                    CHECK(json::from_ubjson(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("N = 256..32767")
+            {
+                for (std::size_t N :
+                        {
+                            256u, 999u, 1025u, 3333u, 2048u, 32767u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<std::uint8_t> expected(N + 7, 'x');
+                    expected[0] = '[';
+                    expected[1] = '$';
+                    expected[2] = 'U';
+                    expected[3] = '#';
+                    expected[4] = 'I';
+                    expected[5] = static_cast<std::uint8_t>((N >> 8) & 0xFF);
+                    expected[6] = static_cast<std::uint8_t>(N & 0xFF);
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 7);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_ubjson(result) == j_out);
+                    CHECK(json::from_ubjson(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("N = 32768..2147483647")
+            {
+                for (std::size_t N :
+                        {
+                            32768u, 77777u, 1048576u
+                        })
+                {
+                    CAPTURE(N)
+
+                    // create JSON value with byte array containing of N * 'x'
+                    const auto s = std::vector<std::uint8_t>(N, 'x');
+                    json const j = json::binary(s);
+
+                    // create expected byte vector
+                    std::vector<std::uint8_t> expected(N + 9, 'x');
+                    expected[0] = '[';
+                    expected[1] = '$';
+                    expected[2] = 'U';
+                    expected[3] = '#';
+                    expected[4] = 'l';
+                    expected[5] = static_cast<std::uint8_t>((N >> 24) & 0xFF);
+                    expected[6] = static_cast<std::uint8_t>((N >> 16) & 0xFF);
+                    expected[7] = static_cast<std::uint8_t>((N >> 8) & 0xFF);
+                    expected[8] = static_cast<std::uint8_t>(N & 0xFF);
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 9);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_ubjson(result) == j_out);
+                    CHECK(json::from_ubjson(result, true, false) == j_out);
+                }
+            }
+
+            SECTION("Other Serializations")
+            {
+                const std::size_t N = 10;
+                const auto s = std::vector<std::uint8_t>(N, 'x');
+                json const j = json::binary(s);
+
+                SECTION("No Count No Type")
+                {
+                    std::vector<uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>('['));
+                    for (std::size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(static_cast<std::uint8_t>('U'));
+                        expected.push_back(static_cast<std::uint8_t>(0x78));
+                    }
+                    expected.push_back(static_cast<std::uint8_t>(']'));
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j, false, false);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 12);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_ubjson(result) == j_out);
+                    CHECK(json::from_ubjson(result, true, false) == j_out);
+                }
+
+                SECTION("Yes Count No Type")
+                {
+                    std::vector<std::uint8_t> expected;
+                    expected.push_back(static_cast<std::uint8_t>('['));
+                    expected.push_back(static_cast<std::uint8_t>('#'));
+                    expected.push_back(static_cast<std::uint8_t>('i'));
+                    expected.push_back(static_cast<std::uint8_t>(N));
+
+                    for (size_t i = 0; i < N; ++i)
+                    {
+                        expected.push_back(static_cast<std::uint8_t>('U'));
+                        expected.push_back(static_cast<std::uint8_t>(0x78));
+                    }
+
+                    // compare result + size
+                    const auto result = json::to_ubjson(j, true, false);
+                    CHECK(result == expected);
+                    CHECK(result.size() == N + 14);
+                    // check that no null byte is appended
+                    CHECK(result.back() != '\x00');
+
+                    // roundtrip only works to an array of numbers
+                    json j_out = s;
+                    CHECK(json::from_ubjson(result) == j_out);
+                    CHECK(json::from_ubjson(result, true, false) == j_out);
+                }
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("empty")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::array();
+                    std::vector<uint8_t> expected = {'[', ']'};
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::array();
+                    std::vector<uint8_t> expected = {'[', '#', 'i', 0};
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::array();
+                    std::vector<uint8_t> expected = {'[', '#', 'i', 0};
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("[null]")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = {nullptr};
+                    std::vector<uint8_t> expected = {'[', 'Z', ']'};
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = {nullptr};
+                    std::vector<uint8_t> expected = {'[', '#', 'i', 1, 'Z'};
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = {nullptr};
+                    std::vector<uint8_t> expected = {'[', '$', 'Z', '#', 'i', 1};
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("[1,2,3,4,5]")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::parse("[1,2,3,4,5]");
+                    std::vector<uint8_t> expected = {'[', 'i', 1, 'i', 2, 'i', 3, 'i', 4, 'i', 5, ']'};
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::parse("[1,2,3,4,5]");
+                    std::vector<uint8_t> expected = {'[', '#', 'i', 5, 'i', 1, 'i', 2, 'i', 3, 'i', 4, 'i', 5};
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::parse("[1,2,3,4,5]");
+                    std::vector<uint8_t> expected = {'[', '$', 'i', '#', 'i', 5, 1, 2, 3, 4, 5};
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("[[[[]]]]")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::parse("[[[[]]]]");
+                    std::vector<uint8_t> expected = {'[', '[', '[', '[', ']', ']', ']', ']'};
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::parse("[[[[]]]]");
+                    std::vector<uint8_t> expected = {'[', '#', 'i', 1, '[', '#', 'i', 1, '[', '#', 'i', 1, '[', '#', 'i', 0};
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::parse("[[[[]]]]");
+                    std::vector<uint8_t> expected = {'[', '$', '[', '#', 'i', 1, '$', '[', '#', 'i', 1, '$', '[', '#', 'i', 1, '#', 'i', 0};
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("array with uint16_t elements")
+            {
+                SECTION("size=false type=false")
+                {
+                    json j(257, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 2, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[258] = ']'; // closing array
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json j(257, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 5, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[1] = '#'; // array size
+                    expected[2] = 'I'; // int16
+                    expected[3] = 0x01; // 0x0101, first byte
+                    expected[4] = 0x01; // 0x0101, second byte
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json j(257, nullptr);
+                    std::vector<uint8_t> expected = {'[', '$', 'Z', '#', 'I', 0x01, 0x01};
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("array with uint32_t elements")
+            {
+                SECTION("size=false type=false")
+                {
+                    json j(65793, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 2, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[65794] = ']'; // closing array
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json j(65793, nullptr);
+                    std::vector<uint8_t> expected(j.size() + 7, 'Z'); // all null
+                    expected[0] = '['; // opening array
+                    expected[1] = '#'; // array size
+                    expected[2] = 'l'; // int32
+                    expected[3] = 0x00; // 0x00010101, first byte
+                    expected[4] = 0x01; // 0x00010101, second byte
+                    expected[5] = 0x01; // 0x00010101, third byte
+                    expected[6] = 0x01; // 0x00010101, fourth byte
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json j(65793, nullptr);
+                    std::vector<uint8_t> expected = {'[', '$', 'Z', '#', 'l', 0x00, 0x01, 0x01, 0x01};
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+        }
+
+        SECTION("object")
+        {
+            SECTION("empty")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::object();
+                    std::vector<uint8_t> expected = {'{', '}'};
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::object();
+                    std::vector<uint8_t> expected = {'{', '#', 'i', 0};
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::object();
+                    std::vector<uint8_t> expected = {'{', '#', 'i', 0};
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("{\"\":null}")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = {{"", nullptr}};
+                    std::vector<uint8_t> expected = {'{', 'i', 0, 'Z', '}'};
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = {{"", nullptr}};
+                    std::vector<uint8_t> expected = {'{', '#', 'i', 1, 'i', 0, 'Z'};
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = {{"", nullptr}};
+                    std::vector<uint8_t> expected = {'{', '$', 'Z', '#', 'i', 1, 'i', 0};
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+
+            SECTION("{\"a\": {\"b\": {\"c\": {}}}}")
+            {
+                SECTION("size=false type=false")
+                {
+                    json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
+                    std::vector<uint8_t> expected =
+                    {
+                        '{', 'i', 1, 'a', '{', 'i', 1, 'b', '{', 'i', 1, 'c', '{', '}', '}', '}', '}'
+                    };
+                    const auto result = json::to_ubjson(j);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=false")
+                {
+                    json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
+                    std::vector<uint8_t> expected =
+                    {
+                        '{', '#', 'i', 1, 'i', 1, 'a', '{', '#', 'i', 1, 'i', 1, 'b', '{', '#', 'i', 1, 'i', 1, 'c', '{', '#', 'i', 0
+                    };
+                    const auto result = json::to_ubjson(j, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+
+                SECTION("size=true type=true")
+                {
+                    json const j = json::parse(R"({"a": {"b": {"c": {}}}})");
+                    std::vector<uint8_t> expected =
+                    {
+                        '{', '$', '{', '#', 'i', 1, 'i', 1, 'a', '$', '{', '#', 'i', 1, 'i', 1, 'b', '$', '{', '#', 'i', 1, 'i', 1, 'c', '#', 'i', 0
+                    };
+                    const auto result = json::to_ubjson(j, true, true);
+                    CHECK(result == expected);
+
+                    // roundtrip
+                    CHECK(json::from_ubjson(result) == j);
+                    CHECK(json::from_ubjson(result, true, false) == j);
+                }
+            }
+        }
+    }
+
+    SECTION("errors")
+    {
+        SECTION("strict mode")
+        {
+            std::vector<uint8_t> const vec = {'Z', 'Z'};
+            SECTION("non-strict mode")
+            {
+                const auto result = json::from_ubjson(vec, false);
+                CHECK(result == json());
+            }
+
+            SECTION("strict mode")
+            {
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vec), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing UBJSON value: expected end of input; last byte: 0x5A", json::parse_error&);
+            }
+        }
+
+        SECTION("excessive size")
+        {
+            SECTION("array")
+            {
+                std::vector<uint8_t> const v_ubjson = {'[', '$', 'Z', '#', 'L', 0x78, 0x28, 0x00, 0x68, 0x28, 0x69, 0x69, 0x17};
+                json _;
+                CHECK_THROWS_AS(_ = json::from_ubjson(v_ubjson), json::out_of_range&);
+
+                json j;
+                nlohmann::detail::json_sax_dom_callback_parser<json, decltype(nlohmann::detail::input_adapter(v_ubjson))> scp(j, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+                {
+                    return true;
+                });
+                CHECK_THROWS_AS(_ = json::sax_parse(v_ubjson, &scp, json::input_format_t::ubjson), json::out_of_range&);
+            }
+
+            SECTION("object")
+            {
+                std::vector<uint8_t> const v_ubjson = {'{', '$', 'Z', '#', 'L', 0x78, 0x28, 0x00, 0x68, 0x28, 0x69, 0x69, 0x17};
+                json _;
+                CHECK_THROWS_AS(_ = json::from_ubjson(v_ubjson), json::out_of_range&);
+
+                json j;
+                nlohmann::detail::json_sax_dom_callback_parser<json, decltype(nlohmann::detail::input_adapter(v_ubjson))> scp(j, [](int /*unused*/, json::parse_event_t /*unused*/, const json& /*unused*/) noexcept
+                {
+                    return true;
+                });
+                CHECK_THROWS_AS(_ = json::sax_parse(v_ubjson, &scp, json::input_format_t::ubjson), json::out_of_range&);
+            }
+        }
+    }
+
+    SECTION("SAX aborts")
+    {
+        SECTION("start_array()")
+        {
+            std::vector<uint8_t> const v = {'[', 'T', 'F', ']'};
+            SaxCountdown scp(0);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::ubjson));
+        }
+
+        SECTION("start_object()")
+        {
+            std::vector<uint8_t> const v = {'{', 'i', 3, 'f', 'o', 'o', 'F', '}'};
+            SaxCountdown scp(0);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::ubjson));
+        }
+
+        SECTION("key() in object")
+        {
+            std::vector<uint8_t> const v = {'{', 'i', 3, 'f', 'o', 'o', 'F', '}'};
+            SaxCountdown scp(1);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::ubjson));
+        }
+
+        SECTION("start_array(len)")
+        {
+            std::vector<uint8_t> const v = {'[', '#', 'i', '2', 'T', 'F'};
+            SaxCountdown scp(0);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::ubjson));
+        }
+
+        SECTION("start_object(len)")
+        {
+            std::vector<uint8_t> const v = {'{', '#', 'i', '1', 3, 'f', 'o', 'o', 'F'};
+            SaxCountdown scp(0);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::ubjson));
+        }
+
+        SECTION("key() in object with length")
+        {
+            std::vector<uint8_t> const v = {'{', 'i', 3, 'f', 'o', 'o', 'F', '}'};
+            SaxCountdown scp(1);
+            CHECK(!json::sax_parse(v, &scp, json::input_format_t::ubjson));
+        }
+    }
+
+    SECTION("parsing values")
+    {
+        SECTION("strings")
+        {
+            // create a single-character string for all number types
+            std::vector<uint8_t> s_i = {'S', 'i', 1, 'a'};
+            std::vector<uint8_t> const s_U = {'S', 'U', 1, 'a'};
+            std::vector<uint8_t> const s_I = {'S', 'I', 0, 1, 'a'};
+            std::vector<uint8_t> const s_l = {'S', 'l', 0, 0, 0, 1, 'a'};
+            std::vector<uint8_t> const s_L = {'S', 'L', 0, 0, 0, 0, 0, 0, 0, 1, 'a'};
+
+            // check if string is parsed correctly to "a"
+            CHECK(json::from_ubjson(s_i) == "a");
+            CHECK(json::from_ubjson(s_U) == "a");
+            CHECK(json::from_ubjson(s_I) == "a");
+            CHECK(json::from_ubjson(s_l) == "a");
+            CHECK(json::from_ubjson(s_L) == "a");
+
+            // roundtrip: output should be optimized
+            CHECK(json::to_ubjson(json::from_ubjson(s_i)) == s_i);
+            CHECK(json::to_ubjson(json::from_ubjson(s_U)) == s_i);
+            CHECK(json::to_ubjson(json::from_ubjson(s_I)) == s_i);
+            CHECK(json::to_ubjson(json::from_ubjson(s_l)) == s_i);
+            CHECK(json::to_ubjson(json::from_ubjson(s_L)) == s_i);
+        }
+
+        SECTION("number")
+        {
+            SECTION("float")
+            {
+                // float32
+                std::vector<uint8_t> const v_d = {'d', 0x40, 0x49, 0x0f, 0xd0};
+                CHECK(json::from_ubjson(v_d) == 3.14159f);
+
+                // float64
+                std::vector<uint8_t> const v_D = {'D', 0x40, 0x09, 0x21, 0xf9, 0xf0, 0x1b, 0x86, 0x6e};
+                CHECK(json::from_ubjson(v_D) == 3.14159);
+
+                // float32 is serialized as float64 as the library does not support float32
+                CHECK(json::to_ubjson(json::from_ubjson(v_d)) == json::to_ubjson(3.14159f));
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("optimized version (length only)")
+            {
+                // create vector with two elements of the same type
+                std::vector<uint8_t> const v_TU = {'[', '#', 'U', 2, 'T', 'T'};
+                std::vector<uint8_t> const v_T = {'[', '#', 'i', 2, 'T', 'T'};
+                std::vector<uint8_t> const v_F = {'[', '#', 'i', 2, 'F', 'F'};
+                std::vector<uint8_t> const v_Z = {'[', '#', 'i', 2, 'Z', 'Z'};
+                std::vector<uint8_t> const v_i = {'[', '#', 'i', 2, 'i', 0x7F, 'i', 0x7F};
+                std::vector<uint8_t> const v_U = {'[', '#', 'i', 2, 'U', 0xFF, 'U', 0xFF};
+                std::vector<uint8_t> const v_I = {'[', '#', 'i', 2, 'I', 0x7F, 0xFF, 'I', 0x7F, 0xFF};
+                std::vector<uint8_t> const v_l = {'[', '#', 'i', 2, 'l', 0x7F, 0xFF, 0xFF, 0xFF, 'l', 0x7F, 0xFF, 0xFF, 0xFF};
+                std::vector<uint8_t> const v_L = {'[', '#', 'i', 2, 'L', 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 'L', 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+                std::vector<uint8_t> const v_D = {'[', '#', 'i', 2, 'D', 0x40, 0x09, 0x21, 0xfb, 0x4d, 0x12, 0xd8, 0x4a, 'D', 0x40, 0x09, 0x21, 0xfb, 0x4d, 0x12, 0xd8, 0x4a};
+                std::vector<uint8_t> const v_S = {'[', '#', 'i', 2, 'S', 'i', 1, 'a', 'S', 'i', 1, 'a'};
+                std::vector<uint8_t> const v_C = {'[', '#', 'i', 2, 'C', 'a', 'C', 'a'};
+
+                // check if vector is parsed correctly
+                CHECK(json::from_ubjson(v_TU) == json({true, true}));
+                CHECK(json::from_ubjson(v_T) == json({true, true}));
+                CHECK(json::from_ubjson(v_F) == json({false, false}));
+                CHECK(json::from_ubjson(v_Z) == json({nullptr, nullptr}));
+                CHECK(json::from_ubjson(v_i) == json({127, 127}));
+                CHECK(json::from_ubjson(v_U) == json({255, 255}));
+                CHECK(json::from_ubjson(v_I) == json({32767, 32767}));
+                CHECK(json::from_ubjson(v_l) == json({2147483647, 2147483647}));
+                CHECK(json::from_ubjson(v_L) == json({9223372036854775807, 9223372036854775807}));
+                CHECK(json::from_ubjson(v_D) == json({3.1415926, 3.1415926}));
+                CHECK(json::from_ubjson(v_S) == json({"a", "a"}));
+                CHECK(json::from_ubjson(v_C) == json({"a", "a"}));
+
+                // roundtrip: output should be optimized
+                CHECK(json::to_ubjson(json::from_ubjson(v_T), true) == v_T);
+                CHECK(json::to_ubjson(json::from_ubjson(v_F), true) == v_F);
+                CHECK(json::to_ubjson(json::from_ubjson(v_Z), true) == v_Z);
+                CHECK(json::to_ubjson(json::from_ubjson(v_i), true) == v_i);
+                CHECK(json::to_ubjson(json::from_ubjson(v_U), true) == v_U);
+                CHECK(json::to_ubjson(json::from_ubjson(v_I), true) == v_I);
+                CHECK(json::to_ubjson(json::from_ubjson(v_l), true) == v_l);
+                CHECK(json::to_ubjson(json::from_ubjson(v_L), true) == v_L);
+                CHECK(json::to_ubjson(json::from_ubjson(v_D), true) == v_D);
+                CHECK(json::to_ubjson(json::from_ubjson(v_S), true) == v_S);
+                CHECK(json::to_ubjson(json::from_ubjson(v_C), true) == v_S); // char is serialized to string
+            }
+
+            SECTION("optimized version (type and length)")
+            {
+                // create vector with two elements of the same type
+                std::vector<uint8_t> const v_N = {'[', '$', 'N', '#', 'i', 2};
+                std::vector<uint8_t> const v_T = {'[', '$', 'T', '#', 'i', 2};
+                std::vector<uint8_t> const v_F = {'[', '$', 'F', '#', 'i', 2};
+                std::vector<uint8_t> const v_Z = {'[', '$', 'Z', '#', 'i', 2};
+                std::vector<uint8_t> const v_i = {'[', '$', 'i', '#', 'i', 2, 0x7F, 0x7F};
+                std::vector<uint8_t> const v_U = {'[', '$', 'U', '#', 'i', 2, 0xFF, 0xFF};
+                std::vector<uint8_t> const v_I = {'[', '$', 'I', '#', 'i', 2, 0x7F, 0xFF, 0x7F, 0xFF};
+                std::vector<uint8_t> const v_l = {'[', '$', 'l', '#', 'i', 2, 0x7F, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF};
+                std::vector<uint8_t> const v_L = {'[', '$', 'L', '#', 'i', 2, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+                std::vector<uint8_t> const v_D = {'[', '$', 'D', '#', 'i', 2, 0x40, 0x09, 0x21, 0xfb, 0x4d, 0x12, 0xd8, 0x4a, 0x40, 0x09, 0x21, 0xfb, 0x4d, 0x12, 0xd8, 0x4a};
+                std::vector<uint8_t> const v_S = {'[', '$', 'S', '#', 'i', 2, 'i', 1, 'a', 'i', 1, 'a'};
+                std::vector<uint8_t> const v_C = {'[', '$', 'C', '#', 'i', 2, 'a', 'a'};
+
+                // check if vector is parsed correctly
+                CHECK(json::from_ubjson(v_N) == json::array());
+                CHECK(json::from_ubjson(v_T) == json({true, true}));
+                CHECK(json::from_ubjson(v_F) == json({false, false}));
+                CHECK(json::from_ubjson(v_Z) == json({nullptr, nullptr}));
+                CHECK(json::from_ubjson(v_i) == json({127, 127}));
+                CHECK(json::from_ubjson(v_U) == json({255, 255}));
+                CHECK(json::from_ubjson(v_I) == json({32767, 32767}));
+                CHECK(json::from_ubjson(v_l) == json({2147483647, 2147483647}));
+                CHECK(json::from_ubjson(v_L) == json({9223372036854775807, 9223372036854775807}));
+                CHECK(json::from_ubjson(v_D) == json({3.1415926, 3.1415926}));
+                CHECK(json::from_ubjson(v_S) == json({"a", "a"}));
+                CHECK(json::from_ubjson(v_C) == json({"a", "a"}));
+
+                // roundtrip: output should be optimized
+                std::vector<uint8_t> const v_empty = {'[', '#', 'i', 0};
+                CHECK(json::to_ubjson(json::from_ubjson(v_N), true, true) == v_empty);
+                CHECK(json::to_ubjson(json::from_ubjson(v_T), true, true) == v_T);
+                CHECK(json::to_ubjson(json::from_ubjson(v_F), true, true) == v_F);
+                CHECK(json::to_ubjson(json::from_ubjson(v_Z), true, true) == v_Z);
+                CHECK(json::to_ubjson(json::from_ubjson(v_i), true, true) == v_i);
+                CHECK(json::to_ubjson(json::from_ubjson(v_U), true, true) == v_U);
+                CHECK(json::to_ubjson(json::from_ubjson(v_I), true, true) == v_I);
+                CHECK(json::to_ubjson(json::from_ubjson(v_l), true, true) == v_l);
+                CHECK(json::to_ubjson(json::from_ubjson(v_L), true, true) == v_L);
+                CHECK(json::to_ubjson(json::from_ubjson(v_D), true, true) == v_D);
+                CHECK(json::to_ubjson(json::from_ubjson(v_S), true, true) == v_S);
+                CHECK(json::to_ubjson(json::from_ubjson(v_C), true, true) == v_S); // char is serialized to string
+            }
+        }
+    }
+
+    SECTION("parse errors")
+    {
+        SECTION("empty byte vector")
+        {
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(std::vector<uint8_t>()), "[json.exception.parse_error.110] parse error at byte 1: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+        }
+
+        SECTION("char")
+        {
+            SECTION("eof after C byte")
+            {
+                std::vector<uint8_t> const v = {'C'};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing UBJSON char: unexpected end of input", json::parse_error&);
+            }
+
+            SECTION("byte out of range")
+            {
+                std::vector<uint8_t> const v = {'C', 130};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON char: byte after 'C' must be in range 0x00..0x7F; last byte: 0x82", json::parse_error&);
+            }
+        }
+
+        SECTION("strings")
+        {
+            SECTION("eof after S byte")
+            {
+                std::vector<uint8_t> const v = {'S'};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            }
+
+            SECTION("invalid byte")
+            {
+                std::vector<uint8_t> const v = {'S', '1', 'a'};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON string: expected length type specification (U, i, I, l, L); last byte: 0x31", json::parse_error&);
+            }
+        }
+
+        SECTION("array")
+        {
+            SECTION("optimized array: no size following type")
+            {
+                std::vector<uint8_t> const v = {'[', '$', 'i', 2};
+                json _;
+                CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.112] parse error at byte 4: syntax error while parsing UBJSON size: expected '#' after type information; last byte: 0x02", json::parse_error&);
+            }
+        }
+
+        SECTION("strings")
+        {
+            std::vector<uint8_t> const vS = {'S'};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vS), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vS, true, false).is_discarded());
+
+            std::vector<uint8_t> const v = {'S', 'i', '2', 'a'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing UBJSON string: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(v, true, false).is_discarded());
+
+            std::vector<uint8_t> const vC = {'C'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vC), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing UBJSON char: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vC, true, false).is_discarded());
+        }
+
+        SECTION("sizes")
+        {
+            std::vector<uint8_t> const vU = {'[', '#', 'U'};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vU), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing UBJSON number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vU, true, false).is_discarded());
+
+            std::vector<uint8_t> const vi = {'[', '#', 'i'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vi), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing UBJSON number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vi, true, false).is_discarded());
+
+            std::vector<uint8_t> const vI = {'[', '#', 'I'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vI), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing UBJSON number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vI, true, false).is_discarded());
+
+            std::vector<uint8_t> const vl = {'[', '#', 'l'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vl), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing UBJSON number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vl, true, false).is_discarded());
+
+            std::vector<uint8_t> const vL = {'[', '#', 'L'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vL), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing UBJSON number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vL, true, false).is_discarded());
+
+            std::vector<uint8_t> const v0 = {'[', '#', 'T', ']'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v0), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing UBJSON size: expected length type specification (U, i, I, l, L) after '#'; last byte: 0x54", json::parse_error&);
+            CHECK(json::from_ubjson(v0, true, false).is_discarded());
+        }
+
+        SECTION("types")
+        {
+            std::vector<uint8_t> const v0 = {'[', '$'};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v0), "[json.exception.parse_error.110] parse error at byte 3: syntax error while parsing UBJSON type: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(v0, true, false).is_discarded());
+
+            std::vector<uint8_t> const vi = {'[', '$', '#'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vi), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vi, true, false).is_discarded());
+
+            std::vector<uint8_t> const vT = {'[', '$', 'T'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vT), "[json.exception.parse_error.110] parse error at byte 4: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vT, true, false).is_discarded());
+        }
+
+        SECTION("arrays")
+        {
+            std::vector<uint8_t> const vST = {'[', '$', 'i', '#', 'i', 2, 1};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vST), "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing UBJSON number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vST, true, false).is_discarded());
+
+            std::vector<uint8_t> const vS = {'[', '#', 'i', 2, 'i', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vS), "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vS, true, false).is_discarded());
+
+            std::vector<uint8_t> const v = {'[', 'i', 2, 'i', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.110] parse error at byte 6: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(v, true, false).is_discarded());
+        }
+
+        SECTION("objects")
+        {
+            std::vector<uint8_t> const vST = {'{', '$', 'i', '#', 'i', 2, 'i', 1, 'a', 1};
+            json _;
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vST), "[json.exception.parse_error.110] parse error at byte 11: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vST, true, false).is_discarded());
+
+            std::vector<uint8_t> const vT = {'{', '$', 'i', 'i', 1, 'a', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vT), "[json.exception.parse_error.112] parse error at byte 4: syntax error while parsing UBJSON size: expected '#' after type information; last byte: 0x69", json::parse_error&);
+            CHECK(json::from_ubjson(vT, true, false).is_discarded());
+
+            std::vector<uint8_t> const vS = {'{', '#', 'i', 2, 'i', 1, 'a', 'i', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vS), "[json.exception.parse_error.110] parse error at byte 10: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vS, true, false).is_discarded());
+
+            std::vector<uint8_t> const v = {'{', 'i', 1, 'a', 'i', 1};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.110] parse error at byte 7: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(v, true, false).is_discarded());
+
+            std::vector<uint8_t> const v2 = {'{', 'i', 1, 'a', 'i', 1, 'i'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v2), "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing UBJSON number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(v2, true, false).is_discarded());
+
+            std::vector<uint8_t> const v3 = {'{', 'i', 1, 'a'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v3), "[json.exception.parse_error.110] parse error at byte 5: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(v3, true, false).is_discarded());
+
+            std::vector<uint8_t> const vST1 = {'{', '$', 'd', '#', 'i', 2, 'i', 1, 'a'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vST1), "[json.exception.parse_error.110] parse error at byte 10: syntax error while parsing UBJSON number: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vST1, true, false).is_discarded());
+
+            std::vector<uint8_t> const vST2 = {'{', '#', 'i', 2, 'i', 1, 'a'};
+            CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vST2), "[json.exception.parse_error.110] parse error at byte 8: syntax error while parsing UBJSON value: unexpected end of input", json::parse_error&);
+            CHECK(json::from_ubjson(vST2, true, false).is_discarded());
+        }
+    }
+
+    SECTION("writing optimized values")
+    {
+        SECTION("integer")
+        {
+            SECTION("array of i")
+            {
+                json const j = {1, -1};
+                std::vector<uint8_t> expected = {'[', '$', 'i', '#', 'i', 2, 1, 0xff};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+            }
+
+            SECTION("array of U")
+            {
+                json const j = {200, 201};
+                std::vector<uint8_t> expected = {'[', '$', 'U', '#', 'i', 2, 0xC8, 0xC9};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+            }
+
+            SECTION("array of I")
+            {
+                json const j = {30000, -30000};
+                std::vector<uint8_t> expected = {'[', '$', 'I', '#', 'i', 2, 0x75, 0x30, 0x8a, 0xd0};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+            }
+
+            SECTION("array of l")
+            {
+                json const j = {70000, -70000};
+                std::vector<uint8_t> expected = {'[', '$', 'l', '#', 'i', 2, 0x00, 0x01, 0x11, 0x70, 0xFF, 0xFE, 0xEE, 0x90};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+            }
+
+            SECTION("array of L")
+            {
+                json const j = {5000000000, -5000000000};
+                std::vector<uint8_t> expected = {'[', '$', 'L', '#', 'i', 2, 0x00, 0x00, 0x00, 0x01, 0x2A, 0x05, 0xF2, 0x00, 0xFF, 0xFF, 0xFF, 0xFE, 0xD5, 0xFA, 0x0E, 0x00};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+            }
+        }
+
+        SECTION("unsigned integer")
+        {
+            SECTION("array of i")
+            {
+                json const j = {1u, 2u};
+                std::vector<uint8_t> expected = {'[', '$', 'i', '#', 'i', 2, 1, 2};
+                std::vector<uint8_t> expected_size = {'[', '#', 'i', 2, 'i', 1, 'i', 2};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+                CHECK(json::to_ubjson(j, true) == expected_size);
+            }
+
+            SECTION("array of U")
+            {
+                json const j = {200u, 201u};
+                std::vector<uint8_t> expected = {'[', '$', 'U', '#', 'i', 2, 0xC8, 0xC9};
+                std::vector<uint8_t> expected_size = {'[', '#', 'i', 2, 'U', 0xC8, 'U', 0xC9};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+                CHECK(json::to_ubjson(j, true) == expected_size);
+            }
+
+            SECTION("array of I")
+            {
+                json const j = {30000u, 30001u};
+                std::vector<uint8_t> expected = {'[', '$', 'I', '#', 'i', 2, 0x75, 0x30, 0x75, 0x31};
+                std::vector<uint8_t> expected_size = {'[', '#', 'i', 2, 'I', 0x75, 0x30, 'I', 0x75, 0x31};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+                CHECK(json::to_ubjson(j, true) == expected_size);
+            }
+
+            SECTION("array of l")
+            {
+                json const j = {70000u, 70001u};
+                std::vector<uint8_t> expected = {'[', '$', 'l', '#', 'i', 2, 0x00, 0x01, 0x11, 0x70, 0x00, 0x01, 0x11, 0x71};
+                std::vector<uint8_t> expected_size = {'[', '#', 'i', 2, 'l', 0x00, 0x01, 0x11, 0x70, 'l', 0x00, 0x01, 0x11, 0x71};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+                CHECK(json::to_ubjson(j, true) == expected_size);
+            }
+
+            SECTION("array of L")
+            {
+                json const j = {5000000000u, 5000000001u};
+                std::vector<uint8_t> expected = {'[', '$', 'L', '#', 'i', 2, 0x00, 0x00, 0x00, 0x01, 0x2A, 0x05, 0xF2, 0x00, 0x00, 0x00, 0x00, 0x01, 0x2A, 0x05, 0xF2, 0x01};
+                std::vector<uint8_t> expected_size = {'[', '#', 'i', 2, 'L', 0x00, 0x00, 0x00, 0x01, 0x2A, 0x05, 0xF2, 0x00, 'L', 0x00, 0x00, 0x00, 0x01, 0x2A, 0x05, 0xF2, 0x01};
+                CHECK(json::to_ubjson(j, true, true) == expected);
+                CHECK(json::to_ubjson(j, true) == expected_size);
+            }
+        }
+
+        SECTION("discarded")
+        {
+            json const j = {json::value_t::discarded, json::value_t::discarded};
+            std::vector<uint8_t> expected = {'[', '$', 'N', '#', 'i', 2};
+            CHECK(json::to_ubjson(j, true, true) == expected);
+        }
+    }
+}
+
+TEST_CASE("Universal Binary JSON Specification Examples 1")
+{
+    SECTION("Null Value")
+    {
+        json const j = {{"passcode", nullptr}};
+        std::vector<uint8_t> const v = {'{', 'i', 8, 'p', 'a', 's', 's', 'c', 'o', 'd', 'e', 'Z', '}'};
+        CHECK(json::to_ubjson(j) == v);
+        CHECK(json::from_ubjson(v) == j);
+    }
+
+    SECTION("No-Op Value")
+    {
+        json const j = {"foo", "bar", "baz"};
+        std::vector<uint8_t> const v = {'[', 'S', 'i', 3, 'f', 'o', 'o',
+                                        'S', 'i', 3, 'b', 'a', 'r',
+                                        'S', 'i', 3, 'b', 'a', 'z', ']'
+                                       };
+        std::vector<uint8_t> const v2 = {'[', 'S', 'i', 3, 'f', 'o', 'o', 'N',
+                                         'S', 'i', 3, 'b', 'a', 'r', 'N', 'N', 'N',
+                                         'S', 'i', 3, 'b', 'a', 'z', 'N', 'N', ']'
+                                        };
+        CHECK(json::to_ubjson(j) == v);
+        CHECK(json::from_ubjson(v) == j);
+        CHECK(json::from_ubjson(v2) == j);
+    }
+
+    SECTION("Boolean Types")
+    {
+        json const j = {{"authorized", true}, {"verified", false}};
+        std::vector<uint8_t> const v = {'{', 'i', 10, 'a', 'u', 't', 'h', 'o', 'r', 'i', 'z', 'e', 'd', 'T',
+                                        'i', 8, 'v', 'e', 'r', 'i', 'f', 'i', 'e', 'd', 'F', '}'
+                                       };
+        CHECK(json::to_ubjson(j) == v);
+        CHECK(json::from_ubjson(v) == j);
+    }
+
+    SECTION("Numeric Types")
+    {
+        json const j =
+        {
+            {"int8", 16},
+            {"uint8", 255},
+            {"int16", 32767},
+            {"int32", 2147483647},
+            {"int64", 9223372036854775807},
+            {"float64", 113243.7863123}
+        };
+        std::vector<uint8_t> const v = {'{',
+                                        'i', 7, 'f', 'l', 'o', 'a', 't', '6', '4', 'D', 0x40, 0xfb, 0xa5, 0xbc, 0x94, 0xbc, 0x34, 0xcf,
+                                        'i', 5, 'i', 'n', 't', '1', '6', 'I', 0x7f, 0xff,
+                                        'i', 5, 'i', 'n', 't', '3', '2', 'l', 0x7f, 0xff, 0xff, 0xff,
+                                        'i', 5, 'i', 'n', 't', '6', '4', 'L', 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                                        'i', 4, 'i', 'n', 't', '8', 'i', 16,
+                                        'i', 5, 'u', 'i', 'n', 't', '8', 'U', 0xff,
+                                        '}'
+                                       };
+        CHECK(json::to_ubjson(j) == v);
+        CHECK(json::from_ubjson(v) == j);
+    }
+
+    SECTION("Char Type")
+    {
+        json const j = {{"rolecode", "a"}, {"delim", ";"}};
+        std::vector<uint8_t> const v = {'{', 'i', 5, 'd', 'e', 'l', 'i', 'm', 'C', ';', 'i', 8, 'r', 'o', 'l', 'e', 'c', 'o', 'd', 'e', 'C', 'a', '}'};
+        //CHECK(json::to_ubjson(j) == v);
+        CHECK(json::from_ubjson(v) == j);
+    }
+
+    SECTION("String Type")
+    {
+        SECTION("English")
+        {
+            json const j = "hello";
+            std::vector<uint8_t> const v = {'S', 'i', 5, 'h', 'e', 'l', 'l', 'o'};
+            CHECK(json::to_ubjson(j) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+
+        SECTION("Russian")
+        {
+            json const j = "привет";
+            std::vector<uint8_t> const v = {'S', 'i', 12, 0xD0, 0xBF, 0xD1, 0x80, 0xD0, 0xB8, 0xD0, 0xB2, 0xD0, 0xB5, 0xD1, 0x82};
+            CHECK(json::to_ubjson(j) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+
+        SECTION("Russian")
+        {
+            json const j = "مرحبا";
+            std::vector<uint8_t> const v = {'S', 'i', 10, 0xD9, 0x85, 0xD8, 0xB1, 0xD8, 0xAD, 0xD8, 0xA8, 0xD8, 0xA7};
+            CHECK(json::to_ubjson(j) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+    }
+
+    SECTION("Array Type")
+    {
+        SECTION("size=false type=false")
+        {
+            // note the float has been replaced by a double
+            json const j = {nullptr, true, false, 4782345193, 153.132, "ham"};
+            std::vector<uint8_t> const v = {'[', 'Z', 'T', 'F', 'L', 0x00, 0x00, 0x00, 0x01, 0x1D, 0x0C, 0xCB, 0xE9, 'D', 0x40, 0x63, 0x24, 0x39, 0x58, 0x10, 0x62, 0x4e, 'S', 'i', 3, 'h', 'a', 'm', ']'};
+            CHECK(json::to_ubjson(j) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+
+        SECTION("size=true type=false")
+        {
+            // note the float has been replaced by a double
+            json const j = {nullptr, true, false, 4782345193, 153.132, "ham"};
+            std::vector<uint8_t> const v = {'[', '#', 'i', 6, 'Z', 'T', 'F', 'L', 0x00, 0x00, 0x00, 0x01, 0x1D, 0x0C, 0xCB, 0xE9, 'D', 0x40, 0x63, 0x24, 0x39, 0x58, 0x10, 0x62, 0x4e, 'S', 'i', 3, 'h', 'a', 'm'};
+            CHECK(json::to_ubjson(j, true) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+
+        SECTION("size=true type=true")
+        {
+            // note the float has been replaced by a double
+            json const j = {nullptr, true, false, 4782345193, 153.132, "ham"};
+            std::vector<uint8_t> const v = {'[', '#', 'i', 6, 'Z', 'T', 'F', 'L', 0x00, 0x00, 0x00, 0x01, 0x1D, 0x0C, 0xCB, 0xE9, 'D', 0x40, 0x63, 0x24, 0x39, 0x58, 0x10, 0x62, 0x4e, 'S', 'i', 3, 'h', 'a', 'm'};
+            CHECK(json::to_ubjson(j, true, true) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+    }
+
+    SECTION("Object Type")
+    {
+        SECTION("size=false type=false")
+        {
+            json const j =
+            {
+                {
+                    "post", {
+                        {"id", 1137},
+                        {"author", "rkalla"},
+                        {"timestamp", 1364482090592},
+                        {"body", "I totally agree!"}
+                    }
+                }
+            };
+            std::vector<uint8_t> const v = {'{', 'i', 4, 'p', 'o', 's', 't', '{',
+                                            'i', 6, 'a', 'u', 't', 'h', 'o', 'r', 'S', 'i', 6, 'r', 'k', 'a', 'l', 'l', 'a',
+                                            'i', 4, 'b', 'o', 'd', 'y', 'S', 'i', 16, 'I', ' ', 't', 'o', 't', 'a', 'l', 'l', 'y', ' ', 'a', 'g', 'r', 'e', 'e', '!',
+                                            'i', 2, 'i', 'd', 'I', 0x04, 0x71,
+                                            'i', 9, 't', 'i', 'm', 'e', 's', 't', 'a', 'm', 'p', 'L', 0x00, 0x00, 0x01, 0x3D, 0xB1, 0x78, 0x66, 0x60,
+                                            '}', '}'
+                                           };
+            CHECK(json::to_ubjson(j) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+
+        SECTION("size=true type=false")
+        {
+            json const j =
+            {
+                {
+                    "post", {
+                        {"id", 1137},
+                        {"author", "rkalla"},
+                        {"timestamp", 1364482090592},
+                        {"body", "I totally agree!"}
+                    }
+                }
+            };
+            std::vector<uint8_t> const v = {'{', '#', 'i', 1, 'i', 4, 'p', 'o', 's', 't', '{', '#', 'i', 4,
+                                            'i', 6, 'a', 'u', 't', 'h', 'o', 'r', 'S', 'i', 6, 'r', 'k', 'a', 'l', 'l', 'a',
+                                            'i', 4, 'b', 'o', 'd', 'y', 'S', 'i', 16, 'I', ' ', 't', 'o', 't', 'a', 'l', 'l', 'y', ' ', 'a', 'g', 'r', 'e', 'e', '!',
+                                            'i', 2, 'i', 'd', 'I', 0x04, 0x71,
+                                            'i', 9, 't', 'i', 'm', 'e', 's', 't', 'a', 'm', 'p', 'L', 0x00, 0x00, 0x01, 0x3D, 0xB1, 0x78, 0x66, 0x60
+                                           };
+            CHECK(json::to_ubjson(j, true) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+
+        SECTION("size=true type=true")
+        {
+            json const j =
+            {
+                {
+                    "post", {
+                        {"id", 1137},
+                        {"author", "rkalla"},
+                        {"timestamp", 1364482090592},
+                        {"body", "I totally agree!"}
+                    }
+                }
+            };
+            std::vector<uint8_t> const v = {'{', '$', '{', '#', 'i', 1, 'i', 4, 'p', 'o', 's', 't', '#', 'i', 4,
+                                            'i', 6, 'a', 'u', 't', 'h', 'o', 'r', 'S', 'i', 6, 'r', 'k', 'a', 'l', 'l', 'a',
+                                            'i', 4, 'b', 'o', 'd', 'y', 'S', 'i', 16, 'I', ' ', 't', 'o', 't', 'a', 'l', 'l', 'y', ' ', 'a', 'g', 'r', 'e', 'e', '!',
+                                            'i', 2, 'i', 'd', 'I', 0x04, 0x71,
+                                            'i', 9, 't', 'i', 'm', 'e', 's', 't', 'a', 'm', 'p', 'L', 0x00, 0x00, 0x01, 0x3D, 0xB1, 0x78, 0x66, 0x60
+                                           };
+            CHECK(json::to_ubjson(j, true, true) == v);
+            CHECK(json::from_ubjson(v) == j);
+        }
+    }
+
+    SECTION("Optimized Format")
+    {
+        SECTION("Array Example")
+        {
+            SECTION("No Optimization")
+            {
+                // note the floats have been replaced by doubles
+                json const j = {29.97, 31.13, 67.0, 2.113, 23.888};
+                std::vector<uint8_t> const v = {'[',
+                                                'D', 0x40, 0x3d, 0xf8, 0x51, 0xeb, 0x85, 0x1e, 0xb8,
+                                                'D', 0x40, 0x3f, 0x21, 0x47, 0xae, 0x14, 0x7a, 0xe1,
+                                                'D', 0x40, 0x50, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                                'D', 0x40, 0x00, 0xe7, 0x6c, 0x8b, 0x43, 0x95, 0x81,
+                                                'D', 0x40, 0x37, 0xe3, 0x53, 0xf7, 0xce, 0xd9, 0x17,
+                                                ']'
+                                               };
+                CHECK(json::to_ubjson(j) == v);
+                CHECK(json::from_ubjson(v) == j);
+            }
+
+            SECTION("Optimized with count")
+            {
+                // note the floats have been replaced by doubles
+                json const j = {29.97, 31.13, 67.0, 2.113, 23.888};
+                std::vector<uint8_t> const v = {'[', '#', 'i', 5,
+                                                'D', 0x40, 0x3d, 0xf8, 0x51, 0xeb, 0x85, 0x1e, 0xb8,
+                                                'D', 0x40, 0x3f, 0x21, 0x47, 0xae, 0x14, 0x7a, 0xe1,
+                                                'D', 0x40, 0x50, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                                'D', 0x40, 0x00, 0xe7, 0x6c, 0x8b, 0x43, 0x95, 0x81,
+                                                'D', 0x40, 0x37, 0xe3, 0x53, 0xf7, 0xce, 0xd9, 0x17
+                                               };
+                CHECK(json::to_ubjson(j, true) == v);
+                CHECK(json::from_ubjson(v) == j);
+            }
+
+            SECTION("Optimized with type & count")
+            {
+                // note the floats have been replaced by doubles
+                json const j = {29.97, 31.13, 67.0, 2.113, 23.888};
+                std::vector<uint8_t> const v = {'[', '$', 'D', '#', 'i', 5,
+                                                0x40, 0x3d, 0xf8, 0x51, 0xeb, 0x85, 0x1e, 0xb8,
+                                                0x40, 0x3f, 0x21, 0x47, 0xae, 0x14, 0x7a, 0xe1,
+                                                0x40, 0x50, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                                0x40, 0x00, 0xe7, 0x6c, 0x8b, 0x43, 0x95, 0x81,
+                                                0x40, 0x37, 0xe3, 0x53, 0xf7, 0xce, 0xd9, 0x17
+                                               };
+                CHECK(json::to_ubjson(j, true, true) == v);
+                CHECK(json::from_ubjson(v) == j);
+            }
+        }
+
+        SECTION("Object Example")
+        {
+            SECTION("No Optimization")
+            {
+                // note the floats have been replaced by doubles
+                json const j = { {"lat", 29.976}, {"long", 31.131}, {"alt", 67.0} };
+                std::vector<uint8_t> const v = {'{',
+                                                'i', 3, 'a', 'l', 't', 'D', 0x40, 0x50, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                                'i', 3, 'l', 'a', 't', 'D', 0x40, 0x3d, 0xf9, 0xdb, 0x22, 0xd0, 0xe5, 0x60,
+                                                'i', 4, 'l', 'o', 'n', 'g', 'D', 0x40, 0x3f, 0x21, 0x89, 0x37, 0x4b, 0xc6, 0xa8,
+                                                '}'
+                                               };
+                CHECK(json::to_ubjson(j) == v);
+                CHECK(json::from_ubjson(v) == j);
+            }
+
+            SECTION("Optimized with count")
+            {
+                // note the floats have been replaced by doubles
+                json const j = { {"lat", 29.976}, {"long", 31.131}, {"alt", 67.0} };
+                std::vector<uint8_t> const v = {'{', '#', 'i', 3,
+                                                'i', 3, 'a', 'l', 't', 'D', 0x40, 0x50, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                                'i', 3, 'l', 'a', 't', 'D', 0x40, 0x3d, 0xf9, 0xdb, 0x22, 0xd0, 0xe5, 0x60,
+                                                'i', 4, 'l', 'o', 'n', 'g', 'D', 0x40, 0x3f, 0x21, 0x89, 0x37, 0x4b, 0xc6, 0xa8
+                                               };
+                CHECK(json::to_ubjson(j, true) == v);
+                CHECK(json::from_ubjson(v) == j);
+            }
+
+            SECTION("Optimized with type & count")
+            {
+                // note the floats have been replaced by doubles
+                json const j = { {"lat", 29.976}, {"long", 31.131}, {"alt", 67.0} };
+                std::vector<uint8_t> const v = {'{', '$', 'D', '#', 'i', 3,
+                                                'i', 3, 'a', 'l', 't', 0x40, 0x50, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                                'i', 3, 'l', 'a', 't', 0x40, 0x3d, 0xf9, 0xdb, 0x22, 0xd0, 0xe5, 0x60,
+                                                'i', 4, 'l', 'o', 'n', 'g', 0x40, 0x3f, 0x21, 0x89, 0x37, 0x4b, 0xc6, 0xa8
+                                               };
+                CHECK(json::to_ubjson(j, true, true) == v);
+                CHECK(json::from_ubjson(v) == j);
+            }
+        }
+
+        SECTION("Special Cases (Null, No-Op and Boolean)")
+        {
+            SECTION("Array")
+            {
+                std::vector<uint8_t> const v = {'[', '$', 'N', '#', 'I', 0x02, 0x00};
+                CHECK(json::from_ubjson(v) == json::array());
+            }
+
+            SECTION("Object")
+            {
+                std::vector<uint8_t> const v = {'{', '$', 'Z', '#', 'i', 3, 'i', 4, 'n', 'a', 'm', 'e', 'i', 8, 'p', 'a', 's', 's', 'w', 'o', 'r', 'd', 'i', 5, 'e', 'm', 'a', 'i', 'l'};
+                CHECK(json::from_ubjson(v) == json({ {"name", nullptr}, {"password", nullptr}, {"email", nullptr} }));
+            }
+        }
+    }
+}
+
+#if !defined(JSON_NOEXCEPTION)
+TEST_CASE("all UBJSON first bytes")
+{
+    // these bytes will fail immediately with exception parse_error.112
+    std::set<uint8_t> supported =
+    {
+        'T', 'F', 'Z', 'U', 'i', 'I', 'l', 'L', 'd', 'D', 'C', 'S', '[', '{', 'N', 'H'
+    };
+
+    for (auto i = 0; i < 256; ++i)
+    {
+        const auto byte = static_cast<uint8_t>(i);
+        CAPTURE(byte)
+
+        try
+        {
+            auto res = json::from_ubjson(std::vector<uint8_t>(1, byte));
+        }
+        catch (const json::parse_error& e)
+        {
+            // check that parse_error.112 is only thrown if the
+            // first byte is not in the supported set
+            INFO_WITH_TEMP(e.what());
+            if (supported.find(byte) == supported.end())
+            {
+                CHECK(e.id == 112);
+            }
+            else
+            {
+                CHECK(e.id != 112);
+            }
+        }
+    }
+}
+#endif
+
+TEST_CASE("UBJSON roundtrips" * doctest::skip())
+{
+    SECTION("input from self-generated UBJSON files")
+    {
+        for (std::string filename :
+                {
+                    TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json",
+                    TEST_DATA_DIRECTORY "/json.org/1.json",
+                    TEST_DATA_DIRECTORY "/json.org/2.json",
+                    TEST_DATA_DIRECTORY "/json.org/3.json",
+                    TEST_DATA_DIRECTORY "/json.org/4.json",
+                    TEST_DATA_DIRECTORY "/json.org/5.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip01.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip02.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip03.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip04.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip05.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip06.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip07.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip08.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip09.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip10.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip11.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip12.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip13.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip14.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip15.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip16.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip17.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip18.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip19.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip20.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip21.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip22.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip23.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip24.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip25.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip26.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip27.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip28.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip29.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip30.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip31.json",
+                    TEST_DATA_DIRECTORY "/json_roundtrip/roundtrip32.json",
+                    TEST_DATA_DIRECTORY "/json_testsuite/sample.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass1.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass2.json",
+                    TEST_DATA_DIRECTORY "/json_tests/pass3.json"
+                })
+        {
+            CAPTURE(filename)
+
+            {
+                INFO_WITH_TEMP(filename + ": std::vector<uint8_t>");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json const j1 = json::parse(f_json);
+
+                // parse UBJSON file
+                auto const packed = utils::read_binary_file(filename + ".ubjson");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_ubjson(packed));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": std::ifstream");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json const j1 = json::parse(f_json);
+
+                // parse UBJSON file
+                std::ifstream f_ubjson(filename + ".ubjson", std::ios::binary);
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_ubjson(f_ubjson));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": uint8_t* and size");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json j1 = json::parse(f_json);
+
+                // parse UBJSON file
+                auto const packed = utils::read_binary_file(filename + ".ubjson");
+                json j2;
+                CHECK_NOTHROW(j2 = json::from_ubjson({packed.data(), packed.size()}));
+
+                // compare parsed JSON values
+                CHECK(j1 == j2);
+            }
+
+            {
+                INFO_WITH_TEMP(filename + ": output to output adapters");
+                // parse JSON file
+                std::ifstream f_json(filename);
+                json const j1 = json::parse(f_json);
+
+                // parse UBJSON file
+                auto const packed = utils::read_binary_file(filename + ".ubjson");
+
+                {
+                    INFO_WITH_TEMP(filename + ": output adapters: std::vector<uint8_t>");
+                    std::vector<uint8_t> vec;
+                    json::to_ubjson(j1, vec);
+                    CHECK(vec == packed);
+                }
+            }
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udl.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udl.cpp
new file mode 100644
index 00000000..08378877
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udl.cpp
@@ -0,0 +1,57 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+
+TEST_CASE("user-defined string literals")
+{
+    auto j_expected = nlohmann::json::parse(R"({"foo": "bar", "baz": 42})");
+    auto ptr_expected = nlohmann::json::json_pointer("/foo/bar");
+
+    SECTION("using namespace nlohmann::literals::json_literals")
+    {
+        using namespace nlohmann::literals::json_literals; // NOLINT(google-build-using-namespace)
+
+        CHECK(R"({"foo": "bar", "baz": 42})"_json == j_expected);
+        CHECK("/foo/bar"_json_pointer == ptr_expected);
+    }
+
+    SECTION("using namespace nlohmann::json_literals")
+    {
+        using namespace nlohmann::json_literals; // NOLINT(google-build-using-namespace)
+
+        CHECK(R"({"foo": "bar", "baz": 42})"_json == j_expected);
+        CHECK("/foo/bar"_json_pointer == ptr_expected);
+    }
+
+    SECTION("using namespace nlohmann::literals")
+    {
+        using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+
+        CHECK(R"({"foo": "bar", "baz": 42})"_json == j_expected);
+        CHECK("/foo/bar"_json_pointer == ptr_expected);
+    }
+
+    SECTION("using namespace nlohmann")
+    {
+        using namespace nlohmann; // NOLINT(google-build-using-namespace)
+
+        CHECK(R"({"foo": "bar", "baz": 42})"_json == j_expected);
+        CHECK("/foo/bar"_json_pointer == ptr_expected);
+    }
+
+#ifndef JSON_TEST_NO_GLOBAL_UDLS
+    SECTION("global namespace")
+    {
+        CHECK(R"({"foo": "bar", "baz": 42})"_json == j_expected);
+        CHECK("/foo/bar"_json_pointer == ptr_expected);
+    }
+#endif
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udt.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udt.cpp
new file mode 100644
index 00000000..8e567a9e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udt.cpp
@@ -0,0 +1,904 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// disable -Wnoexcept due to class Evil
+DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+DOCTEST_GCC_SUPPRESS_WARNING("-Wnoexcept")
+
+// skip tests if JSON_DisableEnumSerialization=ON (#4384)
+#if defined(JSON_DISABLE_ENUM_SERIALIZATION) && (JSON_DISABLE_ENUM_SERIALIZATION == 1)
+    #define SKIP_TESTS_FOR_ENUM_SERIALIZATION
+#endif
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+#ifdef JSON_TEST_NO_GLOBAL_UDLS
+    using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
+#endif
+
+#include <map>
+#include <memory>
+#include <string>
+#include <utility>
+
+namespace udt
+{
+enum class country
+{
+    china,
+    france,
+    russia
+};
+
+struct age
+{
+    int m_val;
+    age(int rhs = 0) : m_val(rhs) {}
+};
+
+struct name
+{
+    std::string m_val;
+    name(std::string rhs = "") : m_val(std::move(rhs)) {}
+};
+
+struct address
+{
+    std::string m_val;
+    address(std::string rhs = "") : m_val(std::move(rhs)) {}
+};
+
+struct person
+{
+    age m_age{}; // NOLINT(readability-redundant-member-init)
+    name m_name{}; // NOLINT(readability-redundant-member-init)
+    country m_country{}; // NOLINT(readability-redundant-member-init)
+    person() = default;
+    person(const age& a, name  n, const country& c) : m_age(a), m_name(std::move(n)), m_country(c) {}
+};
+
+struct contact
+{
+    person m_person{}; // NOLINT(readability-redundant-member-init)
+    address m_address{}; // NOLINT(readability-redundant-member-init)
+    contact() = default;
+    contact(person p, address a) : m_person(std::move(p)), m_address(std::move(a)) {}
+};
+
+enum class book_id : std::uint64_t;
+
+struct contact_book
+{
+    name m_book_name{}; // NOLINT(readability-redundant-member-init)
+    book_id m_book_id{};
+    std::vector<contact> m_contacts{}; // NOLINT(readability-redundant-member-init)
+    contact_book() = default;
+    contact_book(name n, book_id i, std::vector<contact> c) : m_book_name(std::move(n)), m_book_id(i), m_contacts(std::move(c)) {}
+};
+} // namespace udt
+
+// to_json methods
+namespace udt
+{
+// templates because of the custom_json tests (see below)
+template <typename BasicJsonType>
+static void to_json(BasicJsonType& j, age a)
+{
+    j = a.m_val;
+}
+
+template <typename BasicJsonType>
+static void to_json(BasicJsonType& j, const name& n)
+{
+    j = n.m_val;
+}
+
+template <typename BasicJsonType>
+static void to_json(BasicJsonType& j, country c)
+{
+    switch (c)
+    {
+        case country::china:
+            j = "中华人民共和国";
+            return;
+        case country::france:
+            j = "France";
+            return;
+        case country::russia:
+            j = "Российская Федерация";
+            return;
+        default:
+            break;
+    }
+}
+
+template <typename BasicJsonType>
+static void to_json(BasicJsonType& j, const person& p)
+{
+    j = BasicJsonType{{"age", p.m_age}, {"name", p.m_name}, {"country", p.m_country}};
+}
+
+static void to_json(nlohmann::json& j, const address& a)
+{
+    j = a.m_val;
+}
+
+static void to_json(nlohmann::json& j, const contact& c)
+{
+    j = json{{"person", c.m_person}, {"address", c.m_address}};
+}
+
+static void to_json(nlohmann::json& j, const contact_book& cb)
+{
+    j = json{{"name", cb.m_book_name},
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+        {"id", cb.m_book_id},
+#endif
+        {"contacts", cb.m_contacts}};
+}
+
+// operators
+static bool operator==(age lhs, age rhs)
+{
+    return lhs.m_val == rhs.m_val;
+}
+
+static bool operator==(const address& lhs, const address& rhs)
+{
+    return lhs.m_val == rhs.m_val;
+}
+
+static bool operator==(const name& lhs, const name& rhs)
+{
+    return lhs.m_val == rhs.m_val;
+}
+
+static bool operator==(const person& lhs, const person& rhs)
+{
+    return std::tie(lhs.m_name, lhs.m_age) == std::tie(rhs.m_name, rhs.m_age);
+}
+
+static bool operator==(const contact& lhs, const contact& rhs)
+{
+    return std::tie(lhs.m_person, lhs.m_address) ==
+           std::tie(rhs.m_person, rhs.m_address);
+}
+
+static bool operator==(const contact_book& lhs, const contact_book& rhs)
+{
+    return std::tie(lhs.m_book_name, lhs.m_book_id, lhs.m_contacts) ==
+           std::tie(rhs.m_book_name, rhs.m_book_id, rhs.m_contacts);
+}
+} // namespace udt
+
+// from_json methods
+namespace udt
+{
+template <typename BasicJsonType>
+static void from_json(const BasicJsonType& j, age& a)
+{
+    a.m_val = j.template get<int>();
+}
+
+template <typename BasicJsonType>
+static void from_json(const BasicJsonType& j, name& n)
+{
+    n.m_val = j.template get<std::string>();
+}
+
+template <typename BasicJsonType>
+static void from_json(const BasicJsonType& j, country& c)
+{
+    const auto str = j.template get<std::string>();
+    const std::map<std::string, country> m =
+    {
+        {"中华人民共和国", country::china},
+        {"France", country::france},
+        {"Российская Федерация", country::russia}
+    };
+
+    const auto it = m.find(str);
+    // TODO(nlohmann) test exceptions
+    c = it->second;
+}
+
+template <typename BasicJsonType>
+static void from_json(const BasicJsonType& j, person& p)
+{
+    p.m_age = j["age"].template get<age>();
+    p.m_name = j["name"].template get<name>();
+    p.m_country = j["country"].template get<country>();
+}
+
+static void from_json(const nlohmann::json& j, address& a)
+{
+    a.m_val = j.get<std::string>();
+}
+
+static void from_json(const nlohmann::json& j, contact& c)
+{
+    c.m_person = j["person"].get<person>();
+    c.m_address = j["address"].get<address>();
+}
+
+static void from_json(const nlohmann::json& j, contact_book& cb)
+{
+    cb.m_book_name = j["name"].get<name>();
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+    cb.m_book_id = j["id"].get<book_id>();
+#endif
+    cb.m_contacts = j["contacts"].get<std::vector<contact>>();
+}
+} // namespace udt
+
+TEST_CASE("basic usage" * doctest::test_suite("udt"))
+{
+
+    // a bit narcissistic maybe :) ?
+    const udt::age a
+    {
+        23
+    };
+    const udt::name n{"theo"};
+    const udt::country c{udt::country::france};
+    const udt::person sfinae_addict{a, n, c};
+    const udt::person senior_programmer{{42}, {"王芳"}, udt::country::china};
+    const udt::address addr{"Paris"};
+    const udt::contact cpp_programmer{sfinae_addict, addr};
+    const udt::book_id large_id{static_cast<udt::book_id>(static_cast<std::uint64_t>(1) << 63)}; // verify large unsigned enums are handled correctly
+    const udt::contact_book book{{"C++"}, static_cast<udt::book_id>(42u), {cpp_programmer, {senior_programmer, addr}}};
+
+    SECTION("conversion to json via free-functions")
+    {
+        CHECK(json(a) == json(23));
+        CHECK(json(n) == json("theo"));
+        CHECK(json(c) == json("France"));
+        CHECK(json(sfinae_addict) == R"({"name":"theo", "age":23, "country":"France"})"_json);
+        CHECK(json("Paris") == json(addr));
+        CHECK(json(cpp_programmer) ==
+              R"({"person" : {"age":23, "name":"theo", "country":"France"}, "address":"Paris"})"_json);
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+        CHECK(json(large_id) == json(static_cast<std::uint64_t>(1) << 63));
+        CHECK(json(large_id) > 0u);
+        CHECK(to_string(json(large_id)) == "9223372036854775808");
+        CHECK(json(large_id).is_number_unsigned());
+#endif
+
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+        CHECK(
+            json(book) ==
+            R"({"name":"C++", "id":42, "contacts" : [{"person" : {"age":23, "name":"theo", "country":"France"}, "address":"Paris"}, {"person" : {"age":42, "country":"中华人民共和国", "name":"王芳"}, "address":"Paris"}]})"_json);
+#else
+        CHECK(
+            json(book) ==
+            R"({"name":"C++", "contacts" : [{"person" : {"age":23, "name":"theo", "country":"France"}, "address":"Paris"}, {"person" : {"age":42, "country":"中华人民共和国", "name":"王芳"}, "address":"Paris"}]})"_json);
+#endif
+
+    }
+
+    SECTION("conversion from json via free-functions")
+    {
+        const auto big_json =
+            R"({"name":"C++", "id":42, "contacts" : [{"person" : {"age":23, "name":"theo", "country":"France"}, "address":"Paris"}, {"person" : {"age":42, "country":"中华人民共和国", "name":"王芳"}, "address":"Paris"}]})"_json;
+        SECTION("via explicit calls to get")
+        {
+            const auto parsed_book = big_json.get<udt::contact_book>();
+            const auto book_name = big_json["name"].get<udt::name>();
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+            const auto book_id = big_json["id"].get<udt::book_id>();
+#endif
+            const auto contacts =
+                big_json["contacts"].get<std::vector<udt::contact>>();
+            const auto contact_json = big_json["contacts"].at(0);
+            const auto contact = contact_json.get<udt::contact>();
+            const auto person = contact_json["person"].get<udt::person>();
+            const auto address = contact_json["address"].get<udt::address>();
+            const auto age = contact_json["person"]["age"].get<udt::age>();
+            const auto country =
+                contact_json["person"]["country"].get<udt::country>();
+            const auto name = contact_json["person"]["name"].get<udt::name>();
+
+            CHECK(age == a);
+            CHECK(name == n);
+            CHECK(country == c);
+            CHECK(address == addr);
+            CHECK(person == sfinae_addict);
+            CHECK(contact == cpp_programmer);
+            CHECK(contacts == book.m_contacts);
+            CHECK(book_name == udt::name{"C++"});
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+            CHECK(book_id == book.m_book_id);
+            CHECK(book == parsed_book);
+#endif
+        }
+
+        SECTION("via explicit calls to get_to")
+        {
+            udt::person person;
+            udt::name name;
+
+            json person_json = big_json["contacts"][0]["person"];
+            CHECK(person_json.get_to(person) == sfinae_addict);
+
+            // correct reference gets returned
+            person_json["name"].get_to(name).m_val = "new name";
+            CHECK(name.m_val == "new name");
+        }
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+        SECTION("implicit conversions")
+        {
+            const udt::contact_book parsed_book = big_json;
+            const udt::name book_name = big_json["name"];
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+            const udt::book_id book_id = big_json["id"];
+#endif
+            const std::vector<udt::contact> contacts = big_json["contacts"];
+            const auto contact_json = big_json["contacts"].at(0);
+            const udt::contact contact = contact_json;
+            const udt::person person = contact_json["person"];
+            const udt::address address = contact_json["address"];
+            const udt::age age = contact_json["person"]["age"];
+            const udt::country country = contact_json["person"]["country"];
+            const udt::name name = contact_json["person"]["name"];
+
+            CHECK(age == a);
+            CHECK(name == n);
+            CHECK(country == c);
+            CHECK(address == addr);
+            CHECK(person == sfinae_addict);
+            CHECK(contact == cpp_programmer);
+            CHECK(contacts == book.m_contacts);
+            CHECK(book_name == udt::name{"C++"});
+#ifndef SKIP_TESTS_FOR_ENUM_SERIALIZATION
+            CHECK(book_id == static_cast<udt::book_id>(42u));
+            CHECK(book == parsed_book);
+#endif
+        }
+#endif
+    }
+}
+
+namespace udt
+{
+struct legacy_type
+{
+    std::string number{}; // NOLINT(readability-redundant-member-init)
+    legacy_type() = default;
+    legacy_type(std::string n) : number(std::move(n)) {}
+};
+} // namespace udt
+
+namespace nlohmann
+{
+template <typename T>
+struct adl_serializer<std::shared_ptr<T>>
+{
+    static void to_json(json& j, const std::shared_ptr<T>& opt)
+    {
+        if (opt)
+        {
+            j = *opt;
+        }
+        else
+        {
+            j = nullptr;
+        }
+    }
+
+    static void from_json(const json& j, std::shared_ptr<T>& opt)
+    {
+        if (j.is_null())
+        {
+            opt = nullptr;
+        }
+        else
+        {
+            opt.reset(new T(j.get<T>())); // NOLINT(cppcoreguidelines-owning-memory)
+        }
+    }
+};
+
+template <>
+struct adl_serializer<udt::legacy_type>
+{
+    static void to_json(json& j, const udt::legacy_type& l)
+    {
+        j = std::stoi(l.number);
+    }
+
+    static void from_json(const json& j, udt::legacy_type& l)
+    {
+        l.number = std::to_string(j.get<int>());
+    }
+};
+} // namespace nlohmann
+
+TEST_CASE("adl_serializer specialization" * doctest::test_suite("udt"))
+{
+    SECTION("partial specialization")
+    {
+        SECTION("to_json")
+        {
+            std::shared_ptr<udt::person> optPerson;
+
+            json j = optPerson;
+            CHECK(j.is_null());
+
+            optPerson.reset(new udt::person{{42}, {"John Doe"}, udt::country::russia}); // NOLINT(cppcoreguidelines-owning-memory,modernize-make-shared)
+            j = optPerson;
+            CHECK_FALSE(j.is_null());
+
+            CHECK(j.get<udt::person>() == *optPerson);
+        }
+
+        SECTION("from_json")
+        {
+            auto person = udt::person{{42}, {"John Doe"}, udt::country::russia};
+            json j = person;
+
+            auto optPerson = j.get<std::shared_ptr<udt::person>>();
+            REQUIRE(optPerson);
+            CHECK(*optPerson == person);
+
+            j = nullptr;
+            optPerson = j.get<std::shared_ptr<udt::person>>();
+            CHECK(!optPerson);
+        }
+    }
+
+    SECTION("total specialization")
+    {
+        SECTION("to_json")
+        {
+            udt::legacy_type const lt{"4242"};
+
+            json const j = lt;
+            CHECK(j.get<int>() == 4242);
+        }
+
+        SECTION("from_json")
+        {
+            json const j = 4242;
+            auto lt = j.get<udt::legacy_type>();
+            CHECK(lt.number == "4242");
+        }
+    }
+}
+
+namespace nlohmann
+{
+template <>
+struct adl_serializer<std::vector<float>>
+{
+    using type = std::vector<float>;
+    static void to_json(json& j, const type& /*type*/)
+    {
+        j = "hijacked!";
+    }
+
+    static void from_json(const json& /*unnamed*/, type& opt)
+    {
+        opt = {42.0, 42.0, 42.0};
+    }
+
+    // preferred version
+    static type from_json(const json& /*unnamed*/)
+    {
+        return {4.0, 5.0, 6.0};
+    }
+};
+} // namespace nlohmann
+
+TEST_CASE("even supported types can be specialized" * doctest::test_suite("udt"))
+{
+    json const j = std::vector<float> {1.0, 2.0, 3.0};
+    CHECK(j.dump() == R"("hijacked!")");
+    auto f = j.get<std::vector<float>>();
+    // the single argument from_json method is preferred
+    CHECK((f == std::vector<float> {4.0, 5.0, 6.0}));
+}
+
+namespace nlohmann
+{
+template <typename T>
+struct adl_serializer<std::unique_ptr<T>>
+{
+    static void to_json(json& j, const std::unique_ptr<T>& opt)
+    {
+        if (opt)
+        {
+            j = *opt;
+        }
+        else
+        {
+            j = nullptr;
+        }
+    }
+
+    // this is the overload needed for non-copyable types,
+    static std::unique_ptr<T> from_json(const json& j)
+    {
+        if (j.is_null())
+        {
+            return nullptr;
+        }
+
+        return std::unique_ptr<T>(new T(j.get<T>()));
+    }
+};
+} // namespace nlohmann
+
+TEST_CASE("Non-copyable types" * doctest::test_suite("udt"))
+{
+    SECTION("to_json")
+    {
+        std::unique_ptr<udt::person> optPerson;
+
+        json j = optPerson;
+        CHECK(j.is_null());
+
+        optPerson.reset(new udt::person{{42}, {"John Doe"}, udt::country::russia}); // NOLINT(cppcoreguidelines-owning-memory,modernize-make-unique)
+        j = optPerson;
+        CHECK_FALSE(j.is_null());
+
+        CHECK(j.get<udt::person>() == *optPerson);
+    }
+
+    SECTION("from_json")
+    {
+        auto person = udt::person{{42}, {"John Doe"}, udt::country::russia};
+        json j = person;
+
+        auto optPerson = j.get<std::unique_ptr<udt::person>>();
+        REQUIRE(optPerson);
+        CHECK(*optPerson == person);
+
+        j = nullptr;
+        optPerson = j.get<std::unique_ptr<udt::person>>();
+        CHECK(!optPerson);
+    }
+}
+
+// custom serializer - advanced usage
+// pack structs that are pod-types (but not scalar types)
+// relies on adl for any other type
+template <typename T, typename = void>
+struct pod_serializer
+{
+    // use adl for non-pods, or scalar types
+    template <
+        typename BasicJsonType, typename U = T,
+        typename std::enable_if <
+            !(std::is_pod<U>::value && std::is_class<U>::value), int >::type = 0 >
+    static void from_json(const BasicJsonType& j, U& t)
+    {
+        using nlohmann::from_json;
+        from_json(j, t);
+    }
+
+    // special behaviour for pods
+    template < typename BasicJsonType, typename U = T,
+               typename std::enable_if <
+                   std::is_pod<U>::value && std::is_class<U>::value, int >::type = 0 >
+    static void from_json(const  BasicJsonType& j, U& t)
+    {
+        std::uint64_t value = 0;
+        // The following block is no longer relevant in this serializer, make another one that shows the issue
+        // the problem arises only when one from_json method is defined without any constraint
+        //
+        // Why cannot we simply use: j.get<std::uint64_t>() ?
+        // Well, with the current experiment, the get method looks for a from_json
+        // function, which we are currently defining!
+        // This would end up in a stack overflow. Calling nlohmann::from_json is a
+        // workaround (is it?).
+        // I shall find a good way to avoid this once all constructors are converted
+        // to free methods
+        //
+        // In short, constructing a json by constructor calls to_json
+        // calling get calls from_json, for now, we cannot do this in custom
+        // serializers
+        nlohmann::from_json(j, value);
+        auto* bytes = static_cast<char*>(static_cast<void*>(&value)); // NOLINT(bugprone-casting-through-void)
+        std::memcpy(&t, bytes, sizeof(value));
+    }
+
+    template <
+        typename BasicJsonType, typename U = T,
+        typename std::enable_if <
+            !(std::is_pod<U>::value && std::is_class<U>::value), int >::type = 0 >
+    static void to_json(BasicJsonType& j, const  T& t)
+    {
+        using nlohmann::to_json;
+        to_json(j, t);
+    }
+
+    template < typename BasicJsonType, typename U = T,
+               typename std::enable_if <
+                   std::is_pod<U>::value && std::is_class<U>::value, int >::type = 0 >
+    static void to_json(BasicJsonType& j, const  T& t) noexcept
+    {
+        const auto* bytes = static_cast< const unsigned char*>(static_cast<const void*>(&t));  // NOLINT(bugprone-casting-through-void)
+        std::uint64_t value = 0;
+        std::memcpy(&value, bytes, sizeof(value));
+        nlohmann::to_json(j, value);
+    }
+};
+
+namespace udt
+{
+struct small_pod
+{
+    int begin;
+    char middle;
+    short end;
+};
+
+struct non_pod
+{
+    std::string s{}; // NOLINT(readability-redundant-member-init)
+    non_pod() = default;
+    non_pod(std::string S) : s(std::move(S)) {}
+};
+
+template <typename BasicJsonType>
+static void to_json(BasicJsonType& j, const non_pod& np)
+{
+    j = np.s;
+}
+
+template <typename BasicJsonType>
+static void from_json(const BasicJsonType& j, non_pod& np)
+{
+    np.s = j.template get<std::string>();
+}
+
+static bool operator==(small_pod lhs, small_pod rhs) noexcept
+{
+    return std::tie(lhs.begin, lhs.middle, lhs.end) ==
+           std::tie(rhs.begin, rhs.middle, rhs.end);
+}
+
+static bool operator==(const  non_pod& lhs, const  non_pod& rhs) noexcept
+{
+    return lhs.s == rhs.s;
+}
+
+static std::ostream& operator<<(std::ostream& os, small_pod l)
+{
+    return os << "begin: " << l.begin << ", middle: " << l.middle << ", end: " << l.end;
+}
+} // namespace udt
+
+TEST_CASE("custom serializer for pods" * doctest::test_suite("udt"))
+{
+    using custom_json =
+        nlohmann::basic_json<std::map, std::vector, std::string, bool,
+        std::int64_t, std::uint64_t, double, std::allocator, pod_serializer>;
+
+    auto p = udt::small_pod{42, '/', 42};
+    custom_json const j = p;
+
+    auto p2 = j.get<udt::small_pod>();
+
+    CHECK(p == p2);
+
+    auto np = udt::non_pod{{"non-pod"}};
+    custom_json const j2 = np;
+    auto np2 = j2.get<udt::non_pod>();
+    CHECK(np == np2);
+}
+
+template <typename T, typename>
+struct another_adl_serializer;
+
+using custom_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, double, std::allocator, another_adl_serializer>;
+
+template <typename T, typename>
+struct another_adl_serializer
+{
+    static void from_json(const custom_json& j, T& t)
+    {
+        using nlohmann::from_json;
+        from_json(j, t);
+    }
+
+    static void to_json(custom_json& j, const T& t)
+    {
+        using nlohmann::to_json;
+        to_json(j, t);
+    }
+};
+
+TEST_CASE("custom serializer that does adl by default" * doctest::test_suite("udt"))
+{
+    auto me = udt::person{{23}, {"theo"}, udt::country::france};
+
+    json const j = me;
+    custom_json const cj = me;
+
+    CHECK(j.dump() == cj.dump());
+
+    CHECK(me == j.get<udt::person>());
+    CHECK(me == cj.get<udt::person>());
+}
+
+TEST_CASE("different basic_json types conversions")
+{
+    SECTION("null")
+    {
+        json const j;
+        custom_json cj = j;
+        CHECK(cj == nullptr);
+    }
+
+    SECTION("boolean")
+    {
+        json const j = true;
+        custom_json cj = j;
+        CHECK(cj == true);
+    }
+
+    SECTION("discarded")
+    {
+        json const j(json::value_t::discarded);
+        custom_json cj;
+        CHECK_NOTHROW(cj = j);
+        CHECK(cj.type() == custom_json::value_t::discarded);
+    }
+
+    SECTION("array")
+    {
+        json const j = {1, 2, 3};
+        custom_json const cj = j;
+        CHECK((cj == std::vector<int> {1, 2, 3}));
+    }
+
+    SECTION("integer")
+    {
+        json const j = 42;
+        custom_json cj = j;
+        CHECK(cj == 42);
+    }
+
+    SECTION("float")
+    {
+        json const j = 42.0;
+        custom_json cj = j;
+        CHECK(cj == 42.0);
+    }
+
+    SECTION("unsigned")
+    {
+        json const j = 42u;
+        custom_json cj = j;
+        CHECK(cj == 42u);
+    }
+
+    SECTION("string")
+    {
+        json const j = "forty-two";
+        custom_json cj = j;
+        CHECK(cj == "forty-two");
+    }
+
+    SECTION("binary")
+    {
+        json j = json::binary({1, 2, 3}, 42);
+        custom_json cj = j;
+        CHECK(cj.get_binary().subtype() == 42);
+        std::vector<std::uint8_t> cv = cj.get_binary();
+        std::vector<std::uint8_t> v = j.get_binary();
+        CHECK(cv == v);
+    }
+
+    SECTION("object")
+    {
+        json const j = {{"forty", "two"}};
+        custom_json cj = j;
+        auto m = j.get<std::map<std::string, std::string>>();
+        CHECK(cj == m);
+    }
+
+    SECTION("get<custom_json>")
+    {
+        json const j = 42;
+        custom_json cj = j.get<custom_json>();
+        CHECK(cj == 42);
+    }
+}
+
+namespace
+{
+struct incomplete;
+
+// std::is_constructible is broken on macOS' libc++
+// use the cppreference implementation
+
+template <typename T, typename = void>
+struct is_constructible_patched : std::false_type {};
+
+template <typename T>
+struct is_constructible_patched<T, decltype(void(json(std::declval<T>())))> : std::true_type {};
+} // namespace
+
+TEST_CASE("an incomplete type does not trigger a compiler error in non-evaluated context" * doctest::test_suite("udt"))
+{
+    static_assert(!is_constructible_patched<json, incomplete>::value, "");
+}
+
+namespace
+{
+class Evil
+{
+  public:
+    Evil() = default;
+    template <typename T>
+    Evil(T t) : m_i(sizeof(t))
+    {
+        static_cast<void>(t); // fix MSVC's C4100 warning
+    }
+
+    int m_i = 0;
+};
+
+void from_json(const json& /*unused*/, Evil& /*unused*/) {}
+} // namespace
+
+TEST_CASE("Issue #924")
+{
+    // Prevent get<std::vector<Evil>>() to throw
+    auto j = json::array();
+
+    CHECK_NOTHROW(j.get<Evil>());
+    CHECK_NOTHROW(j.get<std::vector<Evil>>());
+
+    // silence Wunused-template warnings
+    Evil e(1);
+    CHECK(e.m_i >= 0);
+}
+
+TEST_CASE("Issue #1237")
+{
+    struct non_convertible_type {};
+    static_assert(!std::is_convertible<json, non_convertible_type>::value, "");
+}
+
+namespace
+{
+class no_iterator_type
+{
+  public:
+    no_iterator_type(std::initializer_list<int> l)
+        : _v(l)
+    {}
+
+    std::vector<int>::const_iterator begin() const
+    {
+        return _v.begin();
+    }
+
+    std::vector<int>::const_iterator end() const
+    {
+        return _v.end();
+    }
+
+  private:
+    std::vector<int> _v;
+};
+}  // namespace
+
+TEST_CASE("compatible array type, without iterator type alias")
+{
+    no_iterator_type const vec{1, 2, 3};
+    json const j = vec;
+}
+
+DOCTEST_GCC_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udt_macro.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udt_macro.cpp
new file mode 100644
index 00000000..e2cc7c9e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-udt_macro.cpp
@@ -0,0 +1,707 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include <string>
+#include <vector>
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+namespace persons
+{
+class person_with_private_data
+{
+  private:
+    std::string name{}; // NOLINT(readability-redundant-member-init)
+    int age = 0;
+    json metadata = nullptr;
+
+  public:
+    bool operator==(const person_with_private_data& rhs) const
+    {
+        return name == rhs.name && age == rhs.age && metadata == rhs.metadata;
+    }
+
+    person_with_private_data() = default;
+    person_with_private_data(std::string name_, int age_, json metadata_)
+        : name(std::move(name_))
+        , age(age_)
+        , metadata(std::move(metadata_))
+    {}
+
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE(person_with_private_data, age, name, metadata)
+};
+
+class derived_person_with_private_data : public person_with_private_data
+{
+  private:
+    std::string hair_color{"blue"};
+
+  public:
+    bool operator==(const derived_person_with_private_data& rhs) const
+    {
+        return person_with_private_data::operator==(rhs) && hair_color == rhs.hair_color;
+    }
+
+    derived_person_with_private_data() = default;
+    derived_person_with_private_data(std::string name_, int age_, json metadata_, std::string hair_color_)
+        : person_with_private_data(std::move(name_), age_, std::move(metadata_))
+        , hair_color(std::move(hair_color_))
+    {}
+
+    NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE(derived_person_with_private_data, person_with_private_data, hair_color)
+};
+
+class person_with_private_data_2
+{
+  private:
+    std::string name{}; // NOLINT(readability-redundant-member-init)
+    int age = 0;
+    json metadata = nullptr;
+
+  public:
+    bool operator==(const person_with_private_data_2& rhs) const
+    {
+        return name == rhs.name && age == rhs.age && metadata == rhs.metadata;
+    }
+
+    person_with_private_data_2() = default;
+    person_with_private_data_2(std::string name_, int age_, json metadata_)
+        : name(std::move(name_))
+        , age(age_)
+        , metadata(std::move(metadata_))
+    {}
+
+    std::string getName() const
+    {
+        return name;
+    }
+    int getAge() const
+    {
+        return age;
+    }
+    json getMetadata() const
+    {
+        return metadata;
+    }
+
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(person_with_private_data_2, age, name, metadata)
+};
+
+class derived_person_with_private_data_2 : public person_with_private_data_2
+{
+  private:
+    std::string hair_color{"blue"};
+
+  public:
+    bool operator==(const derived_person_with_private_data_2& rhs) const
+    {
+        return person_with_private_data_2::operator==(rhs) && hair_color == rhs.hair_color;
+    }
+
+    derived_person_with_private_data_2() = default;
+    derived_person_with_private_data_2(std::string name_, int age_, json metadata_, std::string hair_color_)
+        : person_with_private_data_2(std::move(name_), age_, std::move(metadata_))
+        , hair_color(std::move(hair_color_))
+    {}
+
+    std::string getHairColor() const
+    {
+        return hair_color;
+    }
+
+    NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT(derived_person_with_private_data_2, person_with_private_data_2, hair_color)
+};
+
+class person_without_private_data_1
+{
+  public:
+    std::string name{}; // NOLINT(readability-redundant-member-init)
+    int age = 0;
+    json metadata = nullptr;
+
+    bool operator==(const person_without_private_data_1& rhs) const
+    {
+        return name == rhs.name && age == rhs.age && metadata == rhs.metadata;
+    }
+
+    person_without_private_data_1() = default;
+    person_without_private_data_1(std::string name_, int age_, json metadata_)
+        : name(std::move(name_))
+        , age(age_)
+        , metadata(std::move(metadata_))
+    {}
+
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE(person_without_private_data_1, age, name, metadata)
+};
+
+class derived_person_without_private_data_1 : public person_without_private_data_1
+{
+  public:
+    std::string hair_color{"blue"};
+
+  public:
+    bool operator==(const derived_person_without_private_data_1& rhs) const
+    {
+        return person_without_private_data_1::operator==(rhs) && hair_color == rhs.hair_color;
+    }
+
+    derived_person_without_private_data_1() = default;
+    derived_person_without_private_data_1(std::string name_, int age_, json metadata_, std::string hair_color_)
+        : person_without_private_data_1(std::move(name_), age_, std::move(metadata_))
+        , hair_color(std::move(hair_color_))
+    {}
+
+    NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE(derived_person_without_private_data_1, person_without_private_data_1, hair_color)
+};
+
+class person_without_private_data_2
+{
+  public:
+    std::string name{}; // NOLINT(readability-redundant-member-init)
+    int age = 0;
+    json metadata = nullptr;
+
+    bool operator==(const person_without_private_data_2& rhs) const
+    {
+        return name == rhs.name && age == rhs.age && metadata == rhs.metadata;
+    }
+
+    person_without_private_data_2() = default;
+    person_without_private_data_2(std::string name_, int age_, json metadata_)
+        : name(std::move(name_))
+        , age(age_)
+        , metadata(std::move(metadata_))
+    {}
+};
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(person_without_private_data_2, age, name, metadata)
+
+class derived_person_without_private_data_2 : public person_without_private_data_2
+{
+  public:
+    std::string hair_color{"blue"};
+
+  public:
+    bool operator==(const derived_person_without_private_data_2& rhs) const
+    {
+        return person_without_private_data_2::operator==(rhs) && hair_color == rhs.hair_color;
+    }
+
+    derived_person_without_private_data_2() = default;
+    derived_person_without_private_data_2(std::string name_, int age_, json metadata_, std::string hair_color_)
+        : person_without_private_data_2(std::move(name_), age_, std::move(metadata_))
+        , hair_color(std::move(hair_color_))
+    {}
+};
+
+NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE(derived_person_without_private_data_2, person_without_private_data_2, hair_color)
+
+class person_without_private_data_3
+{
+  public:
+    std::string name{}; // NOLINT(readability-redundant-member-init)
+    int age = 0;
+    json metadata = nullptr;
+
+    bool operator==(const person_without_private_data_3& rhs) const
+    {
+        return name == rhs.name && age == rhs.age && metadata == rhs.metadata;
+    }
+
+    person_without_private_data_3() = default;
+    person_without_private_data_3(std::string name_, int age_, json metadata_)
+        : name(std::move(name_))
+        , age(age_)
+        , metadata(std::move(metadata_))
+    {}
+
+    std::string getName() const
+    {
+        return name;
+    }
+    int getAge() const
+    {
+        return age;
+    }
+    json getMetadata() const
+    {
+        return metadata;
+    }
+};
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(person_without_private_data_3, age, name, metadata)
+
+class derived_person_without_private_data_3 : public person_without_private_data_3
+{
+  public:
+    std::string hair_color{"blue"};
+
+  public:
+    bool operator==(const derived_person_without_private_data_3& rhs) const
+    {
+        return person_without_private_data_3::operator==(rhs) && hair_color == rhs.hair_color;
+    }
+
+    derived_person_without_private_data_3() = default;
+    derived_person_without_private_data_3(std::string name_, int age_, json metadata_, std::string hair_color_)
+        : person_without_private_data_3(std::move(name_), age_, std::move(metadata_))
+        , hair_color(std::move(hair_color_))
+    {}
+
+    std::string getHairColor() const
+    {
+        return hair_color;
+    }
+};
+
+NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT(derived_person_without_private_data_3, person_without_private_data_3, hair_color)
+
+class person_with_private_alphabet
+{
+  public:
+    bool operator==(const person_with_private_alphabet& other) const
+    {
+        return  a == other.a &&
+                b == other.b &&
+                c == other.c &&
+                d == other.d &&
+                e == other.e &&
+                f == other.f &&
+                g == other.g &&
+                h == other.h &&
+                i == other.i &&
+                j == other.j &&
+                k == other.k &&
+                l == other.l &&
+                m == other.m &&
+                n == other.n &&
+                o == other.o &&
+                p == other.p &&
+                q == other.q &&
+                r == other.r &&
+                s == other.s &&
+                t == other.t &&
+                u == other.u &&
+                v == other.v &&
+                w == other.w &&
+                x == other.x &&
+                y == other.y &&
+                z == other.z;
+    }
+
+  private:
+    int a = 0;
+    int b = 0;
+    int c = 0;
+    int d = 0;
+    int e = 0;
+    int f = 0;
+    int g = 0;
+    int h = 0;
+    int i = 0;
+    int j = 0;
+    int k = 0;
+    int l = 0;
+    int m = 0;
+    int n = 0;
+    int o = 0;
+    int p = 0;
+    int q = 0;
+    int r = 0;
+    int s = 0;
+    int t = 0;
+    int u = 0;
+    int v = 0;
+    int w = 0;
+    int x = 0;
+    int y = 0;
+    int z = 0;
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE(person_with_private_alphabet, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z)
+};
+
+class derived_person_with_private_alphabet : public person_with_private_alphabet
+{
+  public:
+    bool operator==(const derived_person_with_private_alphabet& other) const
+    {
+        return person_with_private_alphabet::operator==(other) && schwa == other.schwa;
+    }
+
+  private:
+    int schwa = 0;
+    NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE(derived_person_with_private_alphabet, person_with_private_alphabet, schwa)
+};
+
+class person_with_public_alphabet
+{
+  public:
+    bool operator==(const person_with_public_alphabet& other) const
+    {
+        return  a == other.a &&
+                b == other.b &&
+                c == other.c &&
+                d == other.d &&
+                e == other.e &&
+                f == other.f &&
+                g == other.g &&
+                h == other.h &&
+                i == other.i &&
+                j == other.j &&
+                k == other.k &&
+                l == other.l &&
+                m == other.m &&
+                n == other.n &&
+                o == other.o &&
+                p == other.p &&
+                q == other.q &&
+                r == other.r &&
+                s == other.s &&
+                t == other.t &&
+                u == other.u &&
+                v == other.v &&
+                w == other.w &&
+                x == other.x &&
+                y == other.y &&
+                z == other.z;
+    }
+
+    int a = 0;
+    int b = 0;
+    int c = 0;
+    int d = 0;
+    int e = 0;
+    int f = 0;
+    int g = 0;
+    int h = 0;
+    int i = 0;
+    int j = 0;
+    int k = 0;
+    int l = 0;
+    int m = 0;
+    int n = 0;
+    int o = 0;
+    int p = 0;
+    int q = 0;
+    int r = 0;
+    int s = 0;
+    int t = 0;
+    int u = 0;
+    int v = 0;
+    int w = 0;
+    int x = 0;
+    int y = 0;
+    int z = 0;
+};
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(person_with_public_alphabet, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z)
+
+class person_without_default_constructor_1
+{
+  public:
+    std::string name;
+    int age;
+
+    bool operator==(const person_without_default_constructor_1& other) const
+    {
+        return name == other.name && age == other.age;
+    }
+
+    person_without_default_constructor_1(std::string name_, int age_)
+        : name{std::move(name_)}
+        , age{age_}
+    {}
+
+    NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE(person_without_default_constructor_1, name, age)
+};
+
+class person_without_default_constructor_2
+{
+  public:
+    std::string name;
+    int age;
+
+    bool operator==(const person_without_default_constructor_2& other) const
+    {
+        return name == other.name && age == other.age;
+    }
+
+    person_without_default_constructor_2(std::string name_, int age_)
+        : name{std::move(name_)}
+        , age{age_}
+    {}
+};
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(person_without_default_constructor_2, name, age)
+
+class derived_person_only_serialize_public : public person_without_default_constructor_1
+{
+  public:
+    std::string hair_color;
+
+    derived_person_only_serialize_public(std::string name_, int age_, std::string hair_color_)
+        : person_without_default_constructor_1(std::move(name_), age_)
+        , hair_color(std::move(hair_color_))
+    {}
+};
+
+NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE(derived_person_only_serialize_public, person_without_default_constructor_1, hair_color)
+
+class derived_person_only_serialize_private : person_without_default_constructor_1
+{
+  private:
+    std::string hair_color;
+  public:
+    derived_person_only_serialize_private(std::string name_, int age_, std::string hair_color_)
+        : person_without_default_constructor_1(std::move(name_), age_)
+        , hair_color(std::move(hair_color_))
+    {}
+
+    NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE(derived_person_only_serialize_private, person_without_default_constructor_1, hair_color)
+};
+
+} // namespace persons
+
+TEST_CASE_TEMPLATE("Serialization/deserialization via NLOHMANN_DEFINE_TYPE_INTRUSIVE and NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE", T, // NOLINT(readability-math-missing-parentheses)
+                   persons::person_with_private_data,
+                   persons::person_without_private_data_1,
+                   persons::person_without_private_data_2)
+{
+    SECTION("person")
+    {
+        // serialization
+        T p1("Erik", 1, {{"haircuts", 2}});
+        CHECK(json(p1).dump() == "{\"age\":1,\"metadata\":{\"haircuts\":2},\"name\":\"Erik\"}");
+
+        // deserialization
+        auto p2 = json(p1).get<T>();
+        CHECK(p2 == p1);
+
+        // roundtrip
+        CHECK(T(json(p1)) == p1);
+        CHECK(json(T(json(p1))) == json(p1));
+
+        // check exception in case of missing field
+        json j = json(p1);
+        j.erase("age");
+        CHECK_THROWS_WITH_AS(j.get<T>(), "[json.exception.out_of_range.403] key 'age' not found", json::out_of_range);
+    }
+}
+
+TEST_CASE_TEMPLATE("Serialization/deserialization via NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE and NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE", T, // NOLINT(readability-math-missing-parentheses)
+                   persons::derived_person_with_private_data,
+                   persons::derived_person_without_private_data_1,
+                   persons::derived_person_without_private_data_2)
+{
+    SECTION("person")
+    {
+        // serialization
+        T p1("Erik", 1, {{"haircuts", 2}}, "red");
+        CHECK(json(p1).dump() == "{\"age\":1,\"hair_color\":\"red\",\"metadata\":{\"haircuts\":2},\"name\":\"Erik\"}");
+
+        // deserialization
+        auto p2 = json(p1).get<T>();
+        CHECK(p2 == p1);
+
+        // roundtrip
+        CHECK(T(json(p1)) == p1);
+        CHECK(json(T(json(p1))) == json(p1));
+
+        // check exception in case of missing field
+        json j = json(p1);
+        j.erase("age");
+        CHECK_THROWS_WITH_AS(j.get<T>(), "[json.exception.out_of_range.403] key 'age' not found", json::out_of_range);
+    }
+}
+
+TEST_CASE_TEMPLATE("Serialization/deserialization via NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT and NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT", T, // NOLINT(readability-math-missing-parentheses)
+                   persons::person_with_private_data_2,
+                   persons::person_without_private_data_3)
+{
+    SECTION("person with default values")
+    {
+        // serialization of default constructed object
+        T p0;
+        CHECK(json(p0).dump() == "{\"age\":0,\"metadata\":null,\"name\":\"\"}");
+
+        // serialization
+        T p1("Erik", 1, {{"haircuts", 2}});
+        CHECK(json(p1).dump() == "{\"age\":1,\"metadata\":{\"haircuts\":2},\"name\":\"Erik\"}");
+
+        // deserialization
+        auto p2 = json(p1).get<T>();
+        CHECK(p2 == p1);
+
+        // roundtrip
+        CHECK(T(json(p1)) == p1);
+        CHECK(json(T(json(p1))) == json(p1));
+
+        // check default value in case of missing field
+        json j = json(p1);
+        j.erase("name");
+        j.erase("age");
+        j.erase("metadata");
+        T p3 = j.get<T>();
+        CHECK(p3.getName() == "");
+        CHECK(p3.getAge() == 0);
+        CHECK(p3.getMetadata() == nullptr);
+    }
+}
+
+TEST_CASE_TEMPLATE("Serialization/deserialization via NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_WITH_DEFAULT and NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_WITH_DEFAULT", T, // NOLINT(readability-math-missing-parentheses)
+                   persons::derived_person_with_private_data_2,
+                   persons::derived_person_without_private_data_3)
+{
+    SECTION("derived person with default values")
+    {
+        // serialization of default constructed object
+        T p0;
+        CHECK(json(p0).dump() == "{\"age\":0,\"hair_color\":\"blue\",\"metadata\":null,\"name\":\"\"}");
+
+        // serialization
+        T p1("Erik", 1, {{"haircuts", 2}}, "red");
+        CHECK(json(p1).dump() == "{\"age\":1,\"hair_color\":\"red\",\"metadata\":{\"haircuts\":2},\"name\":\"Erik\"}");
+
+        // deserialization
+        auto p2 = json(p1).get<T>();
+        CHECK(p2 == p1);
+
+        // roundtrip
+        CHECK(T(json(p1)) == p1);
+        CHECK(json(T(json(p1))) == json(p1));
+
+        // check default value in case of missing field
+        json j = json(p1);
+        j.erase("name");
+        j.erase("age");
+        j.erase("metadata");
+        j.erase("hair_color");
+        T p3 = j.get<T>();
+        CHECK(p3.getName() == "");
+        CHECK(p3.getAge() == 0);
+        CHECK(p3.getMetadata() == nullptr);
+        CHECK(p3.getHairColor() == "blue");
+    }
+}
+
+TEST_CASE_TEMPLATE("Serialization/deserialization of classes with 26 public/private member variables via NLOHMANN_DEFINE_TYPE_INTRUSIVE and NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE", T, // NOLINT(readability-math-missing-parentheses)
+                   persons::person_with_private_alphabet,
+                   persons::person_with_public_alphabet)
+{
+    SECTION("alphabet")
+    {
+        {
+            T obj1;
+            nlohmann::json const j = obj1; //via json object
+            T obj2;
+            j.get_to(obj2);
+            bool ok = (obj1 == obj2);
+            CHECK(ok);
+        }
+
+        {
+            T obj1;
+            nlohmann::json const j1 = obj1; //via json string
+            std::string const s = j1.dump();
+            nlohmann::json const j2 = nlohmann::json::parse(s);
+            T obj2;
+            j2.get_to(obj2);
+            bool ok = (obj1 == obj2);
+            CHECK(ok);
+        }
+
+        {
+            T obj1;
+            nlohmann::json const j1 = obj1; //via msgpack
+            std::vector<uint8_t> const buf = nlohmann::json::to_msgpack(j1);
+            nlohmann::json const j2 = nlohmann::json::from_msgpack(buf);
+            T obj2;
+            j2.get_to(obj2);
+            bool ok = (obj1 == obj2);
+            CHECK(ok);
+        }
+
+        {
+            T obj1;
+            nlohmann::json const j1 = obj1; //via bson
+            std::vector<uint8_t> const buf = nlohmann::json::to_bson(j1);
+            nlohmann::json const j2 = nlohmann::json::from_bson(buf);
+            T obj2;
+            j2.get_to(obj2);
+            bool ok = (obj1 == obj2);
+            CHECK(ok);
+        }
+
+        {
+            T obj1;
+            nlohmann::json const j1 = obj1; //via cbor
+            std::vector<uint8_t> const buf = nlohmann::json::to_cbor(j1);
+            nlohmann::json const j2 = nlohmann::json::from_cbor(buf);
+            T obj2;
+            j2.get_to(obj2);
+            bool ok = (obj1 == obj2);
+            CHECK(ok);
+        }
+
+        {
+            T obj1;
+            nlohmann::json const j1 = obj1; //via ubjson
+            std::vector<uint8_t> const buf = nlohmann::json::to_ubjson(j1);
+            nlohmann::json const j2 = nlohmann::json::from_ubjson(buf);
+            T obj2;
+            j2.get_to(obj2);
+            bool ok = (obj1 == obj2);
+            CHECK(ok);
+        }
+    }
+}
+
+TEST_CASE_TEMPLATE("Serialization of non-default-constructible classes via NLOHMANN_DEFINE_TYPE_INTRUSIVE_ONLY_SERIALIZE and NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE", T, // NOLINT(readability-math-missing-parentheses)
+                   persons::person_without_default_constructor_1,
+                   persons::person_without_default_constructor_2)
+{
+    SECTION("person")
+    {
+        {
+            // serialization of a single object
+            T person{"Erik", 1};
+            CHECK(json(person).dump() == "{\"age\":1,\"name\":\"Erik\"}");
+
+            // serialization of a container with objects
+            std::vector<T> const two_persons
+            {
+                {"Erik", 1},
+                {"Kyle", 2}
+            };
+            CHECK(json(two_persons).dump() == "[{\"age\":1,\"name\":\"Erik\"},{\"age\":2,\"name\":\"Kyle\"}]");
+        }
+    }
+}
+
+TEST_CASE_TEMPLATE("Serialization of non-default-constructible classes via NLOHMANN_DEFINE_DERIVED_TYPE_INTRUSIVE_ONLY_SERIALIZE and NLOHMANN_DEFINE_DERIVED_TYPE_NON_INTRUSIVE_ONLY_SERIALIZE", T, // NOLINT(readability-math-missing-parentheses)
+                   persons::derived_person_only_serialize_public,
+                   persons::derived_person_only_serialize_private)
+{
+    SECTION("derived person only serialize")
+    {
+        {
+            // serialization of a single object
+            T person{"Erik", 1, "brown"};
+            CHECK(json(person).dump() == "{\"age\":1,\"hair_color\":\"brown\",\"name\":\"Erik\"}");
+
+            // serialization of a container with objects
+            std::vector<T> const two_persons
+            {
+                {"Erik", 1, "brown"},
+                {"Kyle", 2, "black"}
+            };
+            CHECK(json(two_persons).dump() == "[{\"age\":1,\"hair_color\":\"brown\",\"name\":\"Erik\"},{\"age\":2,\"hair_color\":\"black\",\"name\":\"Kyle\"}]");
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode1.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode1.cpp
new file mode 100644
index 00000000..f812d669
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode1.cpp
@@ -0,0 +1,620 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// for some reason including this after the json header leads to linker errors with VS 2017...
+#include <locale>
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <sstream>
+#include <iomanip>
+#include "make_test_data_available.hpp"
+
+TEST_CASE("Unicode (1/5)" * doctest::skip())
+{
+    SECTION("\\uxxxx sequences")
+    {
+        // create an escaped string from a code point
+        const auto codepoint_to_unicode = [](std::size_t cp)
+        {
+            // code points are represented as a six-character sequence: a
+            // reverse solidus, followed by the lowercase letter u, followed
+            // by four hexadecimal digits that encode the character's code
+            // point
+            std::stringstream ss;
+            ss << "\\u" << std::setw(4) << std::setfill('0') << std::hex << cp;
+            return ss.str();
+        };
+
+        SECTION("correct sequences")
+        {
+            // generate all UTF-8 code points; in total, 1112064 code points are
+            // generated: 0x1FFFFF code points - 2048 invalid values between
+            // 0xD800 and 0xDFFF.
+            for (std::size_t cp = 0; cp <= 0x10FFFFu; ++cp)
+            {
+                // string to store the code point as in \uxxxx format
+                std::string json_text = "\"";
+
+                // decide whether to use one or two \uxxxx sequences
+                if (cp < 0x10000u)
+                {
+                    // The Unicode standard permanently reserves these code point
+                    // values for UTF-16 encoding of the high and low surrogates, and
+                    // they will never be assigned a character, so there should be no
+                    // reason to encode them. The official Unicode standard says that
+                    // no UTF forms, including UTF-16, can encode these code points.
+                    if (cp >= 0xD800u && cp <= 0xDFFFu)
+                    {
+                        // if we would not skip these code points, we would get a
+                        // "missing low surrogate" exception
+                        continue;
+                    }
+
+                    // code points in the Basic Multilingual Plane can be
+                    // represented with one \uxxxx sequence
+                    json_text += codepoint_to_unicode(cp);
+                }
+                else
+                {
+                    // To escape an extended character that is not in the Basic
+                    // Multilingual Plane, the character is represented as a
+                    // 12-character sequence, encoding the UTF-16 surrogate pair
+                    const auto codepoint1 = 0xd800u + (((cp - 0x10000u) >> 10) & 0x3ffu);
+                    const auto codepoint2 = 0xdc00u + ((cp - 0x10000u) & 0x3ffu);
+                    json_text += codepoint_to_unicode(codepoint1) + codepoint_to_unicode(codepoint2);
+                }
+
+                json_text += "\"";
+                CAPTURE(json_text)
+                json _;
+                CHECK_NOTHROW(_ = json::parse(json_text));
+            }
+        }
+
+        SECTION("incorrect sequences")
+        {
+            SECTION("incorrect surrogate values")
+            {
+                json _;
+
+                CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uDC00\\uDC00\""), "[json.exception.parse_error.101] parse error at line 1, column 7: syntax error while parsing value - invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF; last read: '\"\\uDC00'", json::parse_error&);
+
+                CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD7FF\\uDC00\""), "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF; last read: '\"\\uD7FF\\uDC00'", json::parse_error&);
+
+                CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD800]\""), "[json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD800]'", json::parse_error&);
+
+                CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD800\\v\""), "[json.exception.parse_error.101] parse error at line 1, column 9: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD800\\v'", json::parse_error&);
+
+                CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD800\\u123\""), "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: '\\u' must be followed by 4 hex digits; last read: '\"\\uD800\\u123\"'", json::parse_error&);
+
+                CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD800\\uDBFF\""), "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD800\\uDBFF'", json::parse_error&);
+
+                CHECK_THROWS_WITH_AS(_ = json::parse("\"\\uD800\\uE000\""), "[json.exception.parse_error.101] parse error at line 1, column 13: syntax error while parsing value - invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF; last read: '\"\\uD800\\uE000'", json::parse_error&);
+            }
+        }
+
+#if 0 // NOLINT(readability-avoid-unconditional-preprocessor-if)
+        SECTION("incorrect sequences")
+        {
+            SECTION("high surrogate without low surrogate")
+            {
+                // D800..DBFF are high surrogates and must be followed by low
+                // surrogates DC00..DFFF; here, nothing follows
+                for (std::size_t cp = 0xD800u; cp <= 0xDBFFu; ++cp)
+                {
+                    std::string json_text = "\"" + codepoint_to_unicode(cp) + "\"";
+                    CAPTURE(json_text)
+                    CHECK_THROWS_AS(json::parse(json_text), json::parse_error&);
+                }
+            }
+
+            SECTION("high surrogate with wrong low surrogate")
+            {
+                // D800..DBFF are high surrogates and must be followed by low
+                // surrogates DC00..DFFF; here a different sequence follows
+                for (std::size_t cp1 = 0xD800u; cp1 <= 0xDBFFu; ++cp1)
+                {
+                    for (std::size_t cp2 = 0x0000u; cp2 <= 0xFFFFu; ++cp2)
+                    {
+                        if (0xDC00u <= cp2 && cp2 <= 0xDFFFu)
+                        {
+                            continue;
+                        }
+
+                        std::string json_text = "\"" + codepoint_to_unicode(cp1) + codepoint_to_unicode(cp2) + "\"";
+                        CAPTURE(json_text)
+                        CHECK_THROWS_AS(json::parse(json_text), json::parse_error&);
+                    }
+                }
+            }
+
+            SECTION("low surrogate without high surrogate")
+            {
+                // low surrogates DC00..DFFF must follow high surrogates; here,
+                // they occur alone
+                for (std::size_t cp = 0xDC00u; cp <= 0xDFFFu; ++cp)
+                {
+                    std::string json_text = "\"" + codepoint_to_unicode(cp) + "\"";
+                    CAPTURE(json_text)
+                    CHECK_THROWS_AS(json::parse(json_text), json::parse_error&);
+                }
+            }
+
+        }
+#endif
+    }
+
+    SECTION("read all unicode characters")
+    {
+        // read a file with all Unicode characters stored as single-character
+        // strings in a JSON array
+        std::ifstream f(TEST_DATA_DIRECTORY "/json_nlohmann_tests/all_unicode.json");
+        json j;
+        CHECK_NOTHROW(f >> j);
+
+        // the array has 1112064 + 1 elements (a terminating "null" value)
+        // Note: 1112064 = 0x1FFFFF code points - 2048 invalid values between
+        // 0xD800 and 0xDFFF.
+        CHECK(j.size() == 1112065);
+
+        SECTION("check JSON Pointers")
+        {
+            for (const auto& s : j)
+            {
+                // skip non-string JSON values
+                if (!s.is_string())
+                {
+                    continue;
+                }
+
+                auto ptr = s.get<std::string>();
+
+                // tilde must be followed by 0 or 1
+                if (ptr == "~")
+                {
+                    ptr += "0";
+                }
+
+                // JSON Pointers must begin with "/"
+                ptr.insert(0, "/");
+
+                CHECK_NOTHROW(json::json_pointer("/" + ptr));
+
+                // check escape/unescape roundtrip
+                auto escaped = nlohmann::detail::escape(ptr);
+                nlohmann::detail::unescape(escaped);
+                CHECK(escaped == ptr);
+            }
+        }
+    }
+
+    SECTION("ignore byte-order-mark")
+    {
+        SECTION("in a stream")
+        {
+            // read a file with a UTF-8 BOM
+            std::ifstream f(TEST_DATA_DIRECTORY "/json_nlohmann_tests/bom.json");
+            json j;
+            CHECK_NOTHROW(f >> j);
+        }
+
+        SECTION("with an iterator")
+        {
+            std::string i = "\xef\xbb\xbf{\n   \"foo\": true\n}";
+            json _;
+            CHECK_NOTHROW(_ = json::parse(i.begin(), i.end()));
+        }
+    }
+
+    SECTION("error for incomplete/wrong BOM")
+    {
+        json _;
+        CHECK_THROWS_AS(_ = json::parse("\xef\xbb"), json::parse_error&);
+        CHECK_THROWS_AS(_ = json::parse("\xef\xbb\xbb"), json::parse_error&);
+    }
+}
+
+namespace
+{
+void roundtrip(bool success_expected, const std::string& s);
+
+void roundtrip(bool success_expected, const std::string& s)
+{
+    CAPTURE(s)
+    json _;
+
+    // create JSON string value
+    const json j = s;
+    // create JSON text
+    const std::string ps = std::string("\"") + s + "\"";
+
+    if (success_expected)
+    {
+        // serialization succeeds
+        CHECK_NOTHROW(j.dump());
+
+        // exclude parse test for U+0000
+        if (s[0] != '\0')
+        {
+            // parsing JSON text succeeds
+            CHECK_NOTHROW(_ = json::parse(ps));
+        }
+
+        // roundtrip succeeds
+        CHECK_NOTHROW(_ = json::parse(j.dump()));
+
+        // after roundtrip, the same string is stored
+        const json jr = json::parse(j.dump());
+        CHECK(jr.get<std::string>() == s);
+    }
+    else
+    {
+        // serialization fails
+        CHECK_THROWS_AS(j.dump(), json::type_error&);
+
+        // parsing JSON text fails
+        CHECK_THROWS_AS(_ = json::parse(ps), json::parse_error&);
+    }
+}
+} // namespace
+
+TEST_CASE("Markus Kuhn's UTF-8 decoder capability and stress test")
+{
+    // Markus Kuhn <http://www.cl.cam.ac.uk/~mgk25/> - 2015-08-28 - CC BY 4.0
+    // http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt
+
+    SECTION("1  Some correct UTF-8 text")
+    {
+        roundtrip(true, "κόσμε");
+    }
+
+    SECTION("2  Boundary condition test cases")
+    {
+        SECTION("2.1  First possible sequence of a certain length")
+        {
+            // 2.1.1  1 byte  (U-00000000)
+            roundtrip(true, std::string("\0", 1));
+            // 2.1.2  2 bytes (U-00000080)
+            roundtrip(true, "\xc2\x80");
+            // 2.1.3  3 bytes (U-00000800)
+            roundtrip(true, "\xe0\xa0\x80");
+            // 2.1.4  4 bytes (U-00010000)
+            roundtrip(true, "\xf0\x90\x80\x80");
+
+            // 2.1.5  5 bytes (U-00200000)
+            roundtrip(false, "\xF8\x88\x80\x80\x80");
+            // 2.1.6  6 bytes (U-04000000)
+            roundtrip(false, "\xFC\x84\x80\x80\x80\x80");
+        }
+
+        SECTION("2.2  Last possible sequence of a certain length")
+        {
+            // 2.2.1  1 byte  (U-0000007F)
+            roundtrip(true, "\x7f");
+            // 2.2.2  2 bytes (U-000007FF)
+            roundtrip(true, "\xdf\xbf");
+            // 2.2.3  3 bytes (U-0000FFFF)
+            roundtrip(true, "\xef\xbf\xbf");
+
+            // 2.2.4  4 bytes (U-001FFFFF)
+            roundtrip(false, "\xF7\xBF\xBF\xBF");
+            // 2.2.5  5 bytes (U-03FFFFFF)
+            roundtrip(false, "\xFB\xBF\xBF\xBF\xBF");
+            // 2.2.6  6 bytes (U-7FFFFFFF)
+            roundtrip(false, "\xFD\xBF\xBF\xBF\xBF\xBF");
+        }
+
+        SECTION("2.3  Other boundary conditions")
+        {
+            // 2.3.1  U-0000D7FF = ed 9f bf
+            roundtrip(true, "\xed\x9f\xbf");
+            // 2.3.2  U-0000E000 = ee 80 80
+            roundtrip(true, "\xee\x80\x80");
+            // 2.3.3  U-0000FFFD = ef bf bd
+            roundtrip(true, "\xef\xbf\xbd");
+            // 2.3.4  U-0010FFFF = f4 8f bf bf
+            roundtrip(true, "\xf4\x8f\xbf\xbf");
+
+            // 2.3.5  U-00110000 = f4 90 80 80
+            roundtrip(false, "\xf4\x90\x80\x80");
+        }
+    }
+
+    SECTION("3  Malformed sequences")
+    {
+        SECTION("3.1  Unexpected continuation bytes")
+        {
+            // Each unexpected continuation byte should be separately signalled as a
+            // malformed sequence of its own.
+
+            // 3.1.1  First continuation byte 0x80
+            roundtrip(false, "\x80");
+            // 3.1.2  Last  continuation byte 0xbf
+            roundtrip(false, "\xbf");
+
+            // 3.1.3  2 continuation bytes
+            roundtrip(false, "\x80\xbf");
+            // 3.1.4  3 continuation bytes
+            roundtrip(false, "\x80\xbf\x80");
+            // 3.1.5  4 continuation bytes
+            roundtrip(false, "\x80\xbf\x80\xbf");
+            // 3.1.6  5 continuation bytes
+            roundtrip(false, "\x80\xbf\x80\xbf\x80");
+            // 3.1.7  6 continuation bytes
+            roundtrip(false, "\x80\xbf\x80\xbf\x80\xbf");
+            // 3.1.8  7 continuation bytes
+            roundtrip(false, "\x80\xbf\x80\xbf\x80\xbf\x80");
+
+            // 3.1.9  Sequence of all 64 possible continuation bytes (0x80-0xbf)
+            roundtrip(false, "\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf");
+        }
+
+        SECTION("3.2  Lonely start characters")
+        {
+            // 3.2.1  All 32 first bytes of 2-byte sequences (0xc0-0xdf)
+            roundtrip(false, "\xc0 \xc1 \xc2 \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce \xcf \xd0 \xd1 \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd \xde \xdf");
+            // 3.2.2  All 16 first bytes of 3-byte sequences (0xe0-0xef)
+            roundtrip(false, "\xe0 \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec \xed \xee \xef");
+            // 3.2.3  All 8 first bytes of 4-byte sequences (0xf0-0xf7)
+            roundtrip(false, "\xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7");
+            // 3.2.4  All 4 first bytes of 5-byte sequences (0xf8-0xfb)
+            roundtrip(false, "\xf8 \xf9 \xfa \xfb");
+            // 3.2.5  All 2 first bytes of 6-byte sequences (0xfc-0xfd)
+            roundtrip(false, "\xfc \xfd");
+        }
+
+        SECTION("3.3  Sequences with last continuation byte missing")
+        {
+            // All bytes of an incomplete sequence should be signalled as a single
+            // malformed sequence, i.e., you should see only a single replacement
+            // character in each of the next 10 tests. (Characters as in section 2)
+
+            // 3.3.1  2-byte sequence with last byte missing (U+0000)
+            roundtrip(false, "\xc0");
+            // 3.3.2  3-byte sequence with last byte missing (U+0000)
+            roundtrip(false, "\xe0\x80");
+            // 3.3.3  4-byte sequence with last byte missing (U+0000)
+            roundtrip(false, "\xf0\x80\x80");
+            // 3.3.4  5-byte sequence with last byte missing (U+0000)
+            roundtrip(false, "\xf8\x80\x80\x80");
+            // 3.3.5  6-byte sequence with last byte missing (U+0000)
+            roundtrip(false, "\xfc\x80\x80\x80\x80");
+            // 3.3.6  2-byte sequence with last byte missing (U-000007FF)
+            roundtrip(false, "\xdf");
+            // 3.3.7  3-byte sequence with last byte missing (U-0000FFFF)
+            roundtrip(false, "\xef\xbf");
+            // 3.3.8  4-byte sequence with last byte missing (U-001FFFFF)
+            roundtrip(false, "\xf7\xbf\xbf");
+            // 3.3.9  5-byte sequence with last byte missing (U-03FFFFFF)
+            roundtrip(false, "\xfb\xbf\xbf\xbf");
+            // 3.3.10 6-byte sequence with last byte missing (U-7FFFFFFF)
+            roundtrip(false, "\xfd\xbf\xbf\xbf\xbf");
+        }
+
+        SECTION("3.4  Concatenation of incomplete sequences")
+        {
+            // All the 10 sequences of 3.3 concatenated, you should see 10 malformed
+            // sequences being signalled:
+            roundtrip(false, "\xc0\xe0\x80\xf0\x80\x80\xf8\x80\x80\x80\xfc\x80\x80\x80\x80\xdf\xef\xbf\xf7\xbf\xbf\xfb\xbf\xbf\xbf\xfd\xbf\xbf\xbf\xbf");
+        }
+
+        SECTION("3.5  Impossible bytes")
+        {
+            // The following two bytes cannot appear in a correct UTF-8 string
+
+            // 3.5.1  fe
+            roundtrip(false, "\xfe");
+            // 3.5.2  ff
+            roundtrip(false, "\xff");
+            // 3.5.3  fe fe ff ff
+            roundtrip(false, "\xfe\xfe\xff\xff");
+        }
+    }
+
+    SECTION("4  Overlong sequences")
+    {
+        // The following sequences are not malformed according to the letter of
+        // the Unicode 2.0 standard. However, they are longer then necessary and
+        // a correct UTF-8 encoder is not allowed to produce them. A "safe UTF-8
+        // decoder" should reject them just like malformed sequences for two
+        // reasons: (1) It helps to debug applications if overlong sequences are
+        // not treated as valid representations of characters, because this helps
+        // to spot problems more quickly. (2) Overlong sequences provide
+        // alternative representations of characters, that could maliciously be
+        // used to bypass filters that check only for ASCII characters. For
+        // instance, a 2-byte encoded line feed (LF) would not be caught by a
+        // line counter that counts only 0x0a bytes, but it would still be
+        // processed as a line feed by an unsafe UTF-8 decoder later in the
+        // pipeline. From a security point of view, ASCII compatibility of UTF-8
+        // sequences means also, that ASCII characters are *only* allowed to be
+        // represented by ASCII bytes in the range 0x00-0x7f. To ensure this
+        // aspect of ASCII compatibility, use only "safe UTF-8 decoders" that
+        // reject overlong UTF-8 sequences for which a shorter encoding exists.
+
+        SECTION("4.1  Examples of an overlong ASCII character")
+        {
+            // With a safe UTF-8 decoder, all the following five overlong
+            // representations of the ASCII character slash ("/") should be rejected
+            // like a malformed UTF-8 sequence, for instance by substituting it with
+            // a replacement character. If you see a slash below, you do not have a
+            // safe UTF-8 decoder!
+
+            // 4.1.1 U+002F = c0 af
+            roundtrip(false, "\xc0\xaf");
+            // 4.1.2 U+002F = e0 80 af
+            roundtrip(false, "\xe0\x80\xaf");
+            // 4.1.3 U+002F = f0 80 80 af
+            roundtrip(false, "\xf0\x80\x80\xaf");
+            // 4.1.4 U+002F = f8 80 80 80 af
+            roundtrip(false, "\xf8\x80\x80\x80\xaf");
+            // 4.1.5 U+002F = fc 80 80 80 80 af
+            roundtrip(false, "\xfc\x80\x80\x80\x80\xaf");
+        }
+
+        SECTION("4.2  Maximum overlong sequences")
+        {
+            // Below you see the highest Unicode value that is still resulting in an
+            // overlong sequence if represented with the given number of bytes. This
+            // is a boundary test for safe UTF-8 decoders. All five characters should
+            // be rejected like malformed UTF-8 sequences.
+
+            // 4.2.1  U-0000007F = c1 bf
+            roundtrip(false, "\xc1\xbf");
+            // 4.2.2  U-000007FF = e0 9f bf
+            roundtrip(false, "\xe0\x9f\xbf");
+            // 4.2.3  U-0000FFFF = f0 8f bf bf
+            roundtrip(false, "\xf0\x8f\xbf\xbf");
+            // 4.2.4  U-001FFFFF = f8 87 bf bf bf
+            roundtrip(false, "\xf8\x87\xbf\xbf\xbf");
+            // 4.2.5  U-03FFFFFF = fc 83 bf bf bf bf
+            roundtrip(false, "\xfc\x83\xbf\xbf\xbf\xbf");
+        }
+
+        SECTION("4.3  Overlong representation of the NUL character")
+        {
+            // The following five sequences should also be rejected like malformed
+            // UTF-8 sequences and should not be treated like the ASCII NUL
+            // character.
+
+            // 4.3.1  U+0000 = c0 80
+            roundtrip(false, "\xc0\x80");
+            // 4.3.2  U+0000 = e0 80 80
+            roundtrip(false, "\xe0\x80\x80");
+            // 4.3.3  U+0000 = f0 80 80 80
+            roundtrip(false, "\xf0\x80\x80\x80");
+            // 4.3.4  U+0000 = f8 80 80 80 80
+            roundtrip(false, "\xf8\x80\x80\x80\x80");
+            // 4.3.5  U+0000 = fc 80 80 80 80 80
+            roundtrip(false, "\xfc\x80\x80\x80\x80\x80");
+        }
+    }
+
+    SECTION("5  Illegal code positions")
+    {
+        // The following UTF-8 sequences should be rejected like malformed
+        // sequences, because they never represent valid ISO 10646 characters and
+        // a UTF-8 decoder that accepts them might introduce security problems
+        // comparable to overlong UTF-8 sequences.
+
+        SECTION("5.1 Single UTF-16 surrogates")
+        {
+            // 5.1.1  U+D800 = ed a0 80
+            roundtrip(false, "\xed\xa0\x80");
+            // 5.1.2  U+DB7F = ed ad bf
+            roundtrip(false, "\xed\xad\xbf");
+            // 5.1.3  U+DB80 = ed ae 80
+            roundtrip(false, "\xed\xae\x80");
+            // 5.1.4  U+DBFF = ed af bf
+            roundtrip(false, "\xed\xaf\xbf");
+            // 5.1.5  U+DC00 = ed b0 80
+            roundtrip(false, "\xed\xb0\x80");
+            // 5.1.6  U+DF80 = ed be 80
+            roundtrip(false, "\xed\xbe\x80");
+            // 5.1.7  U+DFFF = ed bf bf
+            roundtrip(false, "\xed\xbf\xbf");
+        }
+
+        SECTION("5.2 Paired UTF-16 surrogates")
+        {
+            // 5.2.1  U+D800 U+DC00 = ed a0 80 ed b0 80
+            roundtrip(false, "\xed\xa0\x80\xed\xb0\x80");
+            // 5.2.2  U+D800 U+DFFF = ed a0 80 ed bf bf
+            roundtrip(false, "\xed\xa0\x80\xed\xbf\xbf");
+            // 5.2.3  U+DB7F U+DC00 = ed ad bf ed b0 80
+            roundtrip(false, "\xed\xad\xbf\xed\xb0\x80");
+            // 5.2.4  U+DB7F U+DFFF = ed ad bf ed bf bf
+            roundtrip(false, "\xed\xad\xbf\xed\xbf\xbf");
+            // 5.2.5  U+DB80 U+DC00 = ed ae 80 ed b0 80
+            roundtrip(false, "\xed\xae\x80\xed\xb0\x80");
+            // 5.2.6  U+DB80 U+DFFF = ed ae 80 ed bf bf
+            roundtrip(false, "\xed\xae\x80\xed\xbf\xbf");
+            // 5.2.7  U+DBFF U+DC00 = ed af bf ed b0 80
+            roundtrip(false, "\xed\xaf\xbf\xed\xb0\x80");
+            // 5.2.8  U+DBFF U+DFFF = ed af bf ed bf bf
+            roundtrip(false, "\xed\xaf\xbf\xed\xbf\xbf");
+        }
+
+        SECTION("5.3 Noncharacter code positions")
+        {
+            // The following "noncharacters" are "reserved for internal use" by
+            // applications, and according to older versions of the Unicode Standard
+            // "should never be interchanged". Unicode Corrigendum #9 dropped the
+            // latter restriction. Nevertheless, their presence in incoming UTF-8 data
+            // can remain a potential security risk, depending on what use is made of
+            // these codes subsequently. Examples of such internal use:
+            //
+            //  - Some file APIs with 16-bit characters may use the integer value -1
+            //    = U+FFFF to signal an end-of-file (EOF) or error condition.
+            //
+            //  - In some UTF-16 receivers, code point U+FFFE might trigger a
+            //    byte-swap operation (to convert between UTF-16LE and UTF-16BE).
+            //
+            // With such internal use of noncharacters, it may be desirable and safer
+            // to block those code points in UTF-8 decoders, as they should never
+            // occur legitimately in incoming UTF-8 data, and could trigger unsafe
+            // behaviour in subsequent processing.
+
+            // Particularly problematic noncharacters in 16-bit applications:
+
+            // 5.3.1  U+FFFE = ef bf be
+            roundtrip(true, "\xef\xbf\xbe");
+            // 5.3.2  U+FFFF = ef bf bf
+            roundtrip(true, "\xef\xbf\xbf");
+
+            // 5.3.3  U+FDD0 .. U+FDEF
+            roundtrip(true, "\xEF\xB7\x90");
+            roundtrip(true, "\xEF\xB7\x91");
+            roundtrip(true, "\xEF\xB7\x92");
+            roundtrip(true, "\xEF\xB7\x93");
+            roundtrip(true, "\xEF\xB7\x94");
+            roundtrip(true, "\xEF\xB7\x95");
+            roundtrip(true, "\xEF\xB7\x96");
+            roundtrip(true, "\xEF\xB7\x97");
+            roundtrip(true, "\xEF\xB7\x98");
+            roundtrip(true, "\xEF\xB7\x99");
+            roundtrip(true, "\xEF\xB7\x9A");
+            roundtrip(true, "\xEF\xB7\x9B");
+            roundtrip(true, "\xEF\xB7\x9C");
+            roundtrip(true, "\xEF\xB7\x9D");
+            roundtrip(true, "\xEF\xB7\x9E");
+            roundtrip(true, "\xEF\xB7\x9F");
+            roundtrip(true, "\xEF\xB7\xA0");
+            roundtrip(true, "\xEF\xB7\xA1");
+            roundtrip(true, "\xEF\xB7\xA2");
+            roundtrip(true, "\xEF\xB7\xA3");
+            roundtrip(true, "\xEF\xB7\xA4");
+            roundtrip(true, "\xEF\xB7\xA5");
+            roundtrip(true, "\xEF\xB7\xA6");
+            roundtrip(true, "\xEF\xB7\xA7");
+            roundtrip(true, "\xEF\xB7\xA8");
+            roundtrip(true, "\xEF\xB7\xA9");
+            roundtrip(true, "\xEF\xB7\xAA");
+            roundtrip(true, "\xEF\xB7\xAB");
+            roundtrip(true, "\xEF\xB7\xAC");
+            roundtrip(true, "\xEF\xB7\xAD");
+            roundtrip(true, "\xEF\xB7\xAE");
+            roundtrip(true, "\xEF\xB7\xAF");
+
+            // 5.3.4  U+nFFFE U+nFFFF (for n = 1..10)
+            roundtrip(true, "\xF0\x9F\xBF\xBF");
+            roundtrip(true, "\xF0\xAF\xBF\xBF");
+            roundtrip(true, "\xF0\xBF\xBF\xBF");
+            roundtrip(true, "\xF1\x8F\xBF\xBF");
+            roundtrip(true, "\xF1\x9F\xBF\xBF");
+            roundtrip(true, "\xF1\xAF\xBF\xBF");
+            roundtrip(true, "\xF1\xBF\xBF\xBF");
+            roundtrip(true, "\xF2\x8F\xBF\xBF");
+            roundtrip(true, "\xF2\x9F\xBF\xBF");
+            roundtrip(true, "\xF2\xAF\xBF\xBF");
+        }
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode2.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode2.cpp
new file mode 100644
index 00000000..606de12e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode2.cpp
@@ -0,0 +1,610 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// for some reason including this after the json header leads to linker errors with VS 2017...
+#include <locale>
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <sstream>
+#include <iostream>
+#include <iomanip>
+#include "make_test_data_available.hpp"
+
+// this test suite uses static variables with non-trivial destructors
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors")
+
+namespace
+{
+extern size_t calls;
+size_t calls = 0;
+
+void check_utf8dump(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+void check_utf8dump(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+    static std::string json_string;
+    json_string.clear();
+
+    CAPTURE(byte1)
+    CAPTURE(byte2)
+    CAPTURE(byte3)
+    CAPTURE(byte4)
+
+    json_string += std::string(1, static_cast<char>(byte1));
+
+    if (byte2 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte2));
+    }
+
+    if (byte3 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte3));
+    }
+
+    if (byte4 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte4));
+    }
+
+    CAPTURE(json_string)
+
+    // store the string in a JSON value
+    static json j;
+    static json j2;
+    j = json_string;
+    j2 = "abc" + json_string + "xyz";
+
+    static std::string s_ignored;
+    static std::string s_ignored2;
+    static std::string s_ignored_ascii;
+    static std::string s_ignored2_ascii;
+    static std::string s_replaced;
+    static std::string s_replaced2;
+    static std::string s_replaced_ascii;
+    static std::string s_replaced2_ascii;
+
+    // dumping with ignore/replace must not throw in any case
+    s_ignored = j.dump(-1, ' ', false, json::error_handler_t::ignore);
+    s_ignored2 = j2.dump(-1, ' ', false, json::error_handler_t::ignore);
+    s_ignored_ascii = j.dump(-1, ' ', true, json::error_handler_t::ignore);
+    s_ignored2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::ignore);
+    s_replaced = j.dump(-1, ' ', false, json::error_handler_t::replace);
+    s_replaced2 = j2.dump(-1, ' ', false, json::error_handler_t::replace);
+    s_replaced_ascii = j.dump(-1, ' ', true, json::error_handler_t::replace);
+    s_replaced2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::replace);
+
+    if (success_expected)
+    {
+        static std::string s_strict;
+        // strict mode must not throw if success is expected
+        s_strict = j.dump();
+        // all dumps should agree on the string
+        CHECK(s_strict == s_ignored);
+        CHECK(s_strict == s_replaced);
+    }
+    else
+    {
+        // strict mode must throw if success is not expected
+        CHECK_THROWS_AS(j.dump(), json::type_error&);
+        // ignore and replace must create different dumps
+        CHECK(s_ignored != s_replaced);
+
+        // check that replace string contains a replacement character
+        CHECK(s_replaced.find("\xEF\xBF\xBD") != std::string::npos);
+    }
+
+    // check that prefix and suffix are preserved
+    CHECK(s_ignored2.substr(1, 3) == "abc");
+    CHECK(s_ignored2.substr(s_ignored2.size() - 4, 3) == "xyz");
+    CHECK(s_ignored2_ascii.substr(1, 3) == "abc");
+    CHECK(s_ignored2_ascii.substr(s_ignored2_ascii.size() - 4, 3) == "xyz");
+    CHECK(s_replaced2.substr(1, 3) == "abc");
+    CHECK(s_replaced2.substr(s_replaced2.size() - 4, 3) == "xyz");
+    CHECK(s_replaced2_ascii.substr(1, 3) == "abc");
+    CHECK(s_replaced2_ascii.substr(s_replaced2_ascii.size() - 4, 3) == "xyz");
+}
+
+void check_utf8string(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+// create and check a JSON string with up to four UTF-8 bytes
+void check_utf8string(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+    if (++calls % 100000 == 0)
+    {
+        std::cout << calls << " of 455355 UTF-8 strings checked" << std::endl; // NOLINT(performance-avoid-endl)
+    }
+
+    static std::string json_string;
+    json_string = "\"";
+
+    CAPTURE(byte1)
+    json_string += std::string(1, static_cast<char>(byte1));
+
+    if (byte2 != -1)
+    {
+        CAPTURE(byte2)
+        json_string += std::string(1, static_cast<char>(byte2));
+    }
+
+    if (byte3 != -1)
+    {
+        CAPTURE(byte3)
+        json_string += std::string(1, static_cast<char>(byte3));
+    }
+
+    if (byte4 != -1)
+    {
+        CAPTURE(byte4)
+        json_string += std::string(1, static_cast<char>(byte4));
+    }
+
+    json_string += "\"";
+
+    CAPTURE(json_string)
+
+    json _;
+    if (success_expected)
+    {
+        CHECK_NOTHROW(_ = json::parse(json_string));
+    }
+    else
+    {
+        CHECK_THROWS_AS(_ = json::parse(json_string), json::parse_error&);
+    }
+}
+} // namespace
+
+TEST_CASE("Unicode (2/5)" * doctest::skip())
+{
+    SECTION("RFC 3629")
+    {
+        /*
+        RFC 3629 describes in Sect. 4 the syntax of UTF-8 byte sequences as
+        follows:
+
+            A UTF-8 string is a sequence of octets representing a sequence of UCS
+            characters.  An octet sequence is valid UTF-8 only if it matches the
+            following syntax, which is derived from the rules for encoding UTF-8
+            and is expressed in the ABNF of [RFC2234].
+
+            UTF8-octets = *( UTF8-char )
+            UTF8-char   = UTF8-1 / UTF8-2 / UTF8-3 / UTF8-4
+            UTF8-1      = %x00-7F
+            UTF8-2      = %xC2-DF UTF8-tail
+            UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
+                          %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
+            UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
+                          %xF4 %x80-8F 2( UTF8-tail )
+            UTF8-tail   = %x80-BF
+        */
+
+        SECTION("ill-formed first byte")
+        {
+            for (int byte1 = 0x80; byte1 <= 0xC1; ++byte1)
+            {
+                check_utf8string(false, byte1);
+                check_utf8dump(false, byte1);
+            }
+
+            for (int byte1 = 0xF5; byte1 <= 0xFF; ++byte1)
+            {
+                check_utf8string(false, byte1);
+                check_utf8dump(false, byte1);
+            }
+        }
+
+        SECTION("UTF8-1 (x00-x7F)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0x00; byte1 <= 0x7F; ++byte1)
+                {
+                    // unescaped control characters are parse errors in JSON
+                    if (0x00 <= byte1 && byte1 <= 0x1F)
+                    {
+                        check_utf8string(false, byte1);
+                        continue;
+                    }
+
+                    // a single quote is a parse error in JSON
+                    if (byte1 == 0x22)
+                    {
+                        check_utf8string(false, byte1);
+                        continue;
+                    }
+
+                    // a single backslash is a parse error in JSON
+                    if (byte1 == 0x5C)
+                    {
+                        check_utf8string(false, byte1);
+                        continue;
+                    }
+
+                    // all other characters are OK
+                    check_utf8string(true, byte1);
+                    check_utf8dump(true, byte1);
+                }
+            }
+        }
+
+        SECTION("UTF8-2 (xC2-xDF UTF8-tail)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0xC2; byte1 <= 0xDF; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        check_utf8string(true, byte1, byte2);
+                        check_utf8dump(true, byte1, byte2);
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing second byte")
+            {
+                for (int byte1 = 0xC2; byte1 <= 0xDF; ++byte1)
+                {
+                    check_utf8string(false, byte1);
+                    check_utf8dump(false, byte1);
+                }
+            }
+
+            SECTION("ill-formed: wrong second byte")
+            {
+                for (int byte1 = 0xC2; byte1 <= 0xDF; ++byte1)
+                {
+                    for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+                    {
+                        // skip correct second byte
+                        if (0x80 <= byte2 && byte2 <= 0xBF)
+                        {
+                            continue;
+                        }
+
+                        check_utf8string(false, byte1, byte2);
+                        check_utf8dump(false, byte1, byte2);
+                    }
+                }
+            }
+        }
+
+        SECTION("UTF8-3 (xE0 xA0-BF UTF8-tail)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
+                {
+                    for (int byte2 = 0xA0; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(true, byte1, byte2, byte3);
+                            check_utf8dump(true, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing second byte")
+            {
+                for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
+                {
+                    check_utf8string(false, byte1);
+                    check_utf8dump(false, byte1);
+                }
+            }
+
+            SECTION("ill-formed: missing third byte")
+            {
+                for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
+                {
+                    for (int byte2 = 0xA0; byte2 <= 0xBF; ++byte2)
+                    {
+                        check_utf8string(false, byte1, byte2);
+                        check_utf8dump(false, byte1, byte2);
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong second byte")
+            {
+                for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
+                {
+                    for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+                    {
+                        // skip correct second byte
+                        if (0xA0 <= byte2 && byte2 <= 0xBF)
+                        {
+                            continue;
+                        }
+
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong third byte")
+            {
+                for (int byte1 = 0xE0; byte1 <= 0xE0; ++byte1)
+                {
+                    for (int byte2 = 0xA0; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
+                        {
+                            // skip correct third byte
+                            if (0x80 <= byte3 && byte3 <= 0xBF)
+                            {
+                                continue;
+                            }
+
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+        }
+
+        SECTION("UTF8-3 (xE1-xEC UTF8-tail UTF8-tail)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(true, byte1, byte2, byte3);
+                            check_utf8dump(true, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing second byte")
+            {
+                for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
+                {
+                    check_utf8string(false, byte1);
+                    check_utf8dump(false, byte1);
+                }
+            }
+
+            SECTION("ill-formed: missing third byte")
+            {
+                for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        check_utf8string(false, byte1, byte2);
+                        check_utf8dump(false, byte1, byte2);
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong second byte")
+            {
+                for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
+                {
+                    for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+                    {
+                        // skip correct second byte
+                        if (0x80 <= byte2 && byte2 <= 0xBF)
+                        {
+                            continue;
+                        }
+
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong third byte")
+            {
+                for (int byte1 = 0xE1; byte1 <= 0xEC; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
+                        {
+                            // skip correct third byte
+                            if (0x80 <= byte3 && byte3 <= 0xBF)
+                            {
+                                continue;
+                            }
+
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+        }
+
+        SECTION("UTF8-3 (xED x80-9F UTF8-tail)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0x9F; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(true, byte1, byte2, byte3);
+                            check_utf8dump(true, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing second byte")
+            {
+                for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
+                {
+                    check_utf8string(false, byte1);
+                    check_utf8dump(false, byte1);
+                }
+            }
+
+            SECTION("ill-formed: missing third byte")
+            {
+                for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0x9F; ++byte2)
+                    {
+                        check_utf8string(false, byte1, byte2);
+                        check_utf8dump(false, byte1, byte2);
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong second byte")
+            {
+                for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
+                {
+                    for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+                    {
+                        // skip correct second byte
+                        if (0x80 <= byte2 && byte2 <= 0x9F)
+                        {
+                            continue;
+                        }
+
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong third byte")
+            {
+                for (int byte1 = 0xED; byte1 <= 0xED; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0x9F; ++byte2)
+                    {
+                        for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
+                        {
+                            // skip correct third byte
+                            if (0x80 <= byte3 && byte3 <= 0xBF)
+                            {
+                                continue;
+                            }
+
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+        }
+
+        SECTION("UTF8-3 (xEE-xEF UTF8-tail UTF8-tail)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(true, byte1, byte2, byte3);
+                            check_utf8dump(true, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing second byte")
+            {
+                for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
+                {
+                    check_utf8string(false, byte1);
+                    check_utf8dump(false, byte1);
+                }
+            }
+
+            SECTION("ill-formed: missing third byte")
+            {
+                for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        check_utf8string(false, byte1, byte2);
+                        check_utf8dump(false, byte1, byte2);
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong second byte")
+            {
+                for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
+                {
+                    for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+                    {
+                        // skip correct second byte
+                        if (0x80 <= byte2 && byte2 <= 0xBF)
+                        {
+                            continue;
+                        }
+
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong third byte")
+            {
+                for (int byte1 = 0xEE; byte1 <= 0xEF; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
+                        {
+                            // skip correct third byte
+                            if (0x80 <= byte3 && byte3 <= 0xBF)
+                            {
+                                continue;
+                            }
+
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode3.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode3.cpp
new file mode 100644
index 00000000..b060f090
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode3.cpp
@@ -0,0 +1,324 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// for some reason including this after the json header leads to linker errors with VS 2017...
+#include <locale>
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <sstream>
+#include <iostream>
+#include <iomanip>
+#include "make_test_data_available.hpp"
+
+// this test suite uses static variables with non-trivial destructors
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors")
+
+namespace
+{
+extern size_t calls;
+size_t calls = 0;
+
+void check_utf8dump(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+void check_utf8dump(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+    static std::string json_string;
+    json_string.clear();
+
+    CAPTURE(byte1)
+    CAPTURE(byte2)
+    CAPTURE(byte3)
+    CAPTURE(byte4)
+
+    json_string += std::string(1, static_cast<char>(byte1));
+
+    if (byte2 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte2));
+    }
+
+    if (byte3 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte3));
+    }
+
+    if (byte4 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte4));
+    }
+
+    CAPTURE(json_string)
+
+    // store the string in a JSON value
+    static json j;
+    static json j2;
+    j = json_string;
+    j2 = "abc" + json_string + "xyz";
+
+    static std::string s_ignored;
+    static std::string s_ignored2;
+    static std::string s_ignored_ascii;
+    static std::string s_ignored2_ascii;
+    static std::string s_replaced;
+    static std::string s_replaced2;
+    static std::string s_replaced_ascii;
+    static std::string s_replaced2_ascii;
+
+    // dumping with ignore/replace must not throw in any case
+    s_ignored = j.dump(-1, ' ', false, json::error_handler_t::ignore);
+    s_ignored2 = j2.dump(-1, ' ', false, json::error_handler_t::ignore);
+    s_ignored_ascii = j.dump(-1, ' ', true, json::error_handler_t::ignore);
+    s_ignored2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::ignore);
+    s_replaced = j.dump(-1, ' ', false, json::error_handler_t::replace);
+    s_replaced2 = j2.dump(-1, ' ', false, json::error_handler_t::replace);
+    s_replaced_ascii = j.dump(-1, ' ', true, json::error_handler_t::replace);
+    s_replaced2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::replace);
+
+    if (success_expected)
+    {
+        static std::string s_strict;
+        // strict mode must not throw if success is expected
+        s_strict = j.dump();
+        // all dumps should agree on the string
+        CHECK(s_strict == s_ignored);
+        CHECK(s_strict == s_replaced);
+    }
+    else
+    {
+        // strict mode must throw if success is not expected
+        CHECK_THROWS_AS(j.dump(), json::type_error&);
+        // ignore and replace must create different dumps
+        CHECK(s_ignored != s_replaced);
+
+        // check that replace string contains a replacement character
+        CHECK(s_replaced.find("\xEF\xBF\xBD") != std::string::npos);
+    }
+
+    // check that prefix and suffix are preserved
+    CHECK(s_ignored2.substr(1, 3) == "abc");
+    CHECK(s_ignored2.substr(s_ignored2.size() - 4, 3) == "xyz");
+    CHECK(s_ignored2_ascii.substr(1, 3) == "abc");
+    CHECK(s_ignored2_ascii.substr(s_ignored2_ascii.size() - 4, 3) == "xyz");
+    CHECK(s_replaced2.substr(1, 3) == "abc");
+    CHECK(s_replaced2.substr(s_replaced2.size() - 4, 3) == "xyz");
+    CHECK(s_replaced2_ascii.substr(1, 3) == "abc");
+    CHECK(s_replaced2_ascii.substr(s_replaced2_ascii.size() - 4, 3) == "xyz");
+}
+
+void check_utf8string(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+// create and check a JSON string with up to four UTF-8 bytes
+void check_utf8string(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+    if (++calls % 100000 == 0)
+    {
+        std::cout << calls << " of 1641521 UTF-8 strings checked" << std::endl; // NOLINT(performance-avoid-endl)
+    }
+
+    static std::string json_string;
+    json_string = "\"";
+
+    CAPTURE(byte1)
+    json_string += std::string(1, static_cast<char>(byte1));
+
+    if (byte2 != -1)
+    {
+        CAPTURE(byte2)
+        json_string += std::string(1, static_cast<char>(byte2));
+    }
+
+    if (byte3 != -1)
+    {
+        CAPTURE(byte3)
+        json_string += std::string(1, static_cast<char>(byte3));
+    }
+
+    if (byte4 != -1)
+    {
+        CAPTURE(byte4)
+        json_string += std::string(1, static_cast<char>(byte4));
+    }
+
+    json_string += "\"";
+
+    CAPTURE(json_string)
+
+    json _;
+    if (success_expected)
+    {
+        CHECK_NOTHROW(_ = json::parse(json_string));
+    }
+    else
+    {
+        CHECK_THROWS_AS(_ = json::parse(json_string), json::parse_error&);
+    }
+}
+} // namespace
+
+TEST_CASE("Unicode (3/5)" * doctest::skip())
+{
+    SECTION("RFC 3629")
+    {
+        /*
+        RFC 3629 describes in Sect. 4 the syntax of UTF-8 byte sequences as
+        follows:
+
+            A UTF-8 string is a sequence of octets representing a sequence of UCS
+            characters.  An octet sequence is valid UTF-8 only if it matches the
+            following syntax, which is derived from the rules for encoding UTF-8
+            and is expressed in the ABNF of [RFC2234].
+
+            UTF8-octets = *( UTF8-char )
+            UTF8-char   = UTF8-1 / UTF8-2 / UTF8-3 / UTF8-4
+            UTF8-1      = %x00-7F
+            UTF8-2      = %xC2-DF UTF8-tail
+            UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
+                          %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
+            UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
+                          %xF4 %x80-8F 2( UTF8-tail )
+            UTF8-tail   = %x80-BF
+        */
+
+        SECTION("UTF8-4 (xF0 x90-BF UTF8-tail UTF8-tail)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
+                {
+                    for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(true, byte1, byte2, byte3, byte4);
+                                check_utf8dump(true, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing second byte")
+            {
+                for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
+                {
+                    check_utf8string(false, byte1);
+                    check_utf8dump(false, byte1);
+                }
+            }
+
+            SECTION("ill-formed: missing third byte")
+            {
+                for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
+                {
+                    for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
+                    {
+                        check_utf8string(false, byte1, byte2);
+                        check_utf8dump(false, byte1, byte2);
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing fourth byte")
+            {
+                for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
+                {
+                    for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong second byte")
+            {
+                for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
+                {
+                    for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+                    {
+                        // skip correct second byte
+                        if (0x90 <= byte2 && byte2 <= 0xBF)
+                        {
+                            continue;
+                        }
+
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong third byte")
+            {
+                for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
+                {
+                    for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
+                        {
+                            // skip correct third byte
+                            if (0x80 <= byte3 && byte3 <= 0xBF)
+                            {
+                                continue;
+                            }
+
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong fourth byte")
+            {
+                for (int byte1 = 0xF0; byte1 <= 0xF0; ++byte1)
+                {
+                    for (int byte2 = 0x90; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x00; byte4 <= 0xFF; ++byte4)
+                            {
+                                // skip fourth second byte
+                                if (0x80 <= byte3 && byte3 <= 0xBF)
+                                {
+                                    continue;
+                                }
+
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode4.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode4.cpp
new file mode 100644
index 00000000..a6a67a02
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode4.cpp
@@ -0,0 +1,324 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// for some reason including this after the json header leads to linker errors with VS 2017...
+#include <locale>
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <sstream>
+#include <iostream>
+#include <iomanip>
+#include "make_test_data_available.hpp"
+
+// this test suite uses static variables with non-trivial destructors
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors")
+
+namespace
+{
+extern size_t calls;
+size_t calls = 0;
+
+void check_utf8dump(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+void check_utf8dump(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+    static std::string json_string;
+    json_string.clear();
+
+    CAPTURE(byte1)
+    CAPTURE(byte2)
+    CAPTURE(byte3)
+    CAPTURE(byte4)
+
+    json_string += std::string(1, static_cast<char>(byte1));
+
+    if (byte2 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte2));
+    }
+
+    if (byte3 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte3));
+    }
+
+    if (byte4 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte4));
+    }
+
+    CAPTURE(json_string)
+
+    // store the string in a JSON value
+    static json j;
+    static json j2;
+    j = json_string;
+    j2 = "abc" + json_string + "xyz";
+
+    static std::string s_ignored;
+    static std::string s_ignored2;
+    static std::string s_ignored_ascii;
+    static std::string s_ignored2_ascii;
+    static std::string s_replaced;
+    static std::string s_replaced2;
+    static std::string s_replaced_ascii;
+    static std::string s_replaced2_ascii;
+
+    // dumping with ignore/replace must not throw in any case
+    s_ignored = j.dump(-1, ' ', false, json::error_handler_t::ignore);
+    s_ignored2 = j2.dump(-1, ' ', false, json::error_handler_t::ignore);
+    s_ignored_ascii = j.dump(-1, ' ', true, json::error_handler_t::ignore);
+    s_ignored2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::ignore);
+    s_replaced = j.dump(-1, ' ', false, json::error_handler_t::replace);
+    s_replaced2 = j2.dump(-1, ' ', false, json::error_handler_t::replace);
+    s_replaced_ascii = j.dump(-1, ' ', true, json::error_handler_t::replace);
+    s_replaced2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::replace);
+
+    if (success_expected)
+    {
+        static std::string s_strict;
+        // strict mode must not throw if success is expected
+        s_strict = j.dump();
+        // all dumps should agree on the string
+        CHECK(s_strict == s_ignored);
+        CHECK(s_strict == s_replaced);
+    }
+    else
+    {
+        // strict mode must throw if success is not expected
+        CHECK_THROWS_AS(j.dump(), json::type_error&);
+        // ignore and replace must create different dumps
+        CHECK(s_ignored != s_replaced);
+
+        // check that replace string contains a replacement character
+        CHECK(s_replaced.find("\xEF\xBF\xBD") != std::string::npos);
+    }
+
+    // check that prefix and suffix are preserved
+    CHECK(s_ignored2.substr(1, 3) == "abc");
+    CHECK(s_ignored2.substr(s_ignored2.size() - 4, 3) == "xyz");
+    CHECK(s_ignored2_ascii.substr(1, 3) == "abc");
+    CHECK(s_ignored2_ascii.substr(s_ignored2_ascii.size() - 4, 3) == "xyz");
+    CHECK(s_replaced2.substr(1, 3) == "abc");
+    CHECK(s_replaced2.substr(s_replaced2.size() - 4, 3) == "xyz");
+    CHECK(s_replaced2_ascii.substr(1, 3) == "abc");
+    CHECK(s_replaced2_ascii.substr(s_replaced2_ascii.size() - 4, 3) == "xyz");
+}
+
+void check_utf8string(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+// create and check a JSON string with up to four UTF-8 bytes
+void check_utf8string(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+    if (++calls % 100000 == 0)
+    {
+        std::cout << calls << " of 5517507 UTF-8 strings checked" << std::endl; // NOLINT(performance-avoid-endl)
+    }
+
+    static std::string json_string;
+    json_string = "\"";
+
+    CAPTURE(byte1)
+    json_string += std::string(1, static_cast<char>(byte1));
+
+    if (byte2 != -1)
+    {
+        CAPTURE(byte2)
+        json_string += std::string(1, static_cast<char>(byte2));
+    }
+
+    if (byte3 != -1)
+    {
+        CAPTURE(byte3)
+        json_string += std::string(1, static_cast<char>(byte3));
+    }
+
+    if (byte4 != -1)
+    {
+        CAPTURE(byte4)
+        json_string += std::string(1, static_cast<char>(byte4));
+    }
+
+    json_string += "\"";
+
+    CAPTURE(json_string)
+
+    json _;
+    if (success_expected)
+    {
+        CHECK_NOTHROW(_ = json::parse(json_string));
+    }
+    else
+    {
+        CHECK_THROWS_AS(_ = json::parse(json_string), json::parse_error&);
+    }
+}
+} // namespace
+
+TEST_CASE("Unicode (4/5)" * doctest::skip())
+{
+    SECTION("RFC 3629")
+    {
+        /*
+        RFC 3629 describes in Sect. 4 the syntax of UTF-8 byte sequences as
+        follows:
+
+            A UTF-8 string is a sequence of octets representing a sequence of UCS
+            characters.  An octet sequence is valid UTF-8 only if it matches the
+            following syntax, which is derived from the rules for encoding UTF-8
+            and is expressed in the ABNF of [RFC2234].
+
+            UTF8-octets = *( UTF8-char )
+            UTF8-char   = UTF8-1 / UTF8-2 / UTF8-3 / UTF8-4
+            UTF8-1      = %x00-7F
+            UTF8-2      = %xC2-DF UTF8-tail
+            UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
+                          %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
+            UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
+                          %xF4 %x80-8F 2( UTF8-tail )
+            UTF8-tail   = %x80-BF
+        */
+
+        SECTION("UTF8-4 (xF1-F3 UTF8-tail UTF8-tail UTF8-tail)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(true, byte1, byte2, byte3, byte4);
+                                check_utf8dump(true, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing second byte")
+            {
+                for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
+                {
+                    check_utf8string(false, byte1);
+                    check_utf8dump(false, byte1);
+                }
+            }
+
+            SECTION("ill-formed: missing third byte")
+            {
+                for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        check_utf8string(false, byte1, byte2);
+                        check_utf8dump(false, byte1, byte2);
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing fourth byte")
+            {
+                for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong second byte")
+            {
+                for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
+                {
+                    for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+                    {
+                        // skip correct second byte
+                        if (0x80 <= byte2 && byte2 <= 0xBF)
+                        {
+                            continue;
+                        }
+
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong third byte")
+            {
+                for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
+                        {
+                            // skip correct third byte
+                            if (0x80 <= byte3 && byte3 <= 0xBF)
+                            {
+                                continue;
+                            }
+
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong fourth byte")
+            {
+                for (int byte1 = 0xF1; byte1 <= 0xF3; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0xBF; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x00; byte4 <= 0xFF; ++byte4)
+                            {
+                                // skip correct fourth byte
+                                if (0x80 <= byte3 && byte3 <= 0xBF)
+                                {
+                                    continue;
+                                }
+
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode5.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode5.cpp
new file mode 100644
index 00000000..7cf2fc8c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-unicode5.cpp
@@ -0,0 +1,324 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// for some reason including this after the json header leads to linker errors with VS 2017...
+#include <locale>
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <sstream>
+#include <iostream>
+#include <iomanip>
+#include "make_test_data_available.hpp"
+
+// this test suite uses static variables with non-trivial destructors
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors")
+
+namespace
+{
+extern size_t calls;
+size_t calls = 0;
+
+void check_utf8dump(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+void check_utf8dump(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+    static std::string json_string;
+    json_string.clear();
+
+    CAPTURE(byte1)
+    CAPTURE(byte2)
+    CAPTURE(byte3)
+    CAPTURE(byte4)
+
+    json_string += std::string(1, static_cast<char>(byte1));
+
+    if (byte2 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte2));
+    }
+
+    if (byte3 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte3));
+    }
+
+    if (byte4 != -1)
+    {
+        json_string += std::string(1, static_cast<char>(byte4));
+    }
+
+    CAPTURE(json_string)
+
+    // store the string in a JSON value
+    static json j;
+    static json j2;
+    j = json_string;
+    j2 = "abc" + json_string + "xyz";
+
+    static std::string s_ignored;
+    static std::string s_ignored2;
+    static std::string s_ignored_ascii;
+    static std::string s_ignored2_ascii;
+    static std::string s_replaced;
+    static std::string s_replaced2;
+    static std::string s_replaced_ascii;
+    static std::string s_replaced2_ascii;
+
+    // dumping with ignore/replace must not throw in any case
+    s_ignored = j.dump(-1, ' ', false, json::error_handler_t::ignore);
+    s_ignored2 = j2.dump(-1, ' ', false, json::error_handler_t::ignore);
+    s_ignored_ascii = j.dump(-1, ' ', true, json::error_handler_t::ignore);
+    s_ignored2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::ignore);
+    s_replaced = j.dump(-1, ' ', false, json::error_handler_t::replace);
+    s_replaced2 = j2.dump(-1, ' ', false, json::error_handler_t::replace);
+    s_replaced_ascii = j.dump(-1, ' ', true, json::error_handler_t::replace);
+    s_replaced2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::replace);
+
+    if (success_expected)
+    {
+        static std::string s_strict;
+        // strict mode must not throw if success is expected
+        s_strict = j.dump();
+        // all dumps should agree on the string
+        CHECK(s_strict == s_ignored);
+        CHECK(s_strict == s_replaced);
+    }
+    else
+    {
+        // strict mode must throw if success is not expected
+        CHECK_THROWS_AS(j.dump(), json::type_error&);
+        // ignore and replace must create different dumps
+        CHECK(s_ignored != s_replaced);
+
+        // check that replace string contains a replacement character
+        CHECK(s_replaced.find("\xEF\xBF\xBD") != std::string::npos);
+    }
+
+    // check that prefix and suffix are preserved
+    CHECK(s_ignored2.substr(1, 3) == "abc");
+    CHECK(s_ignored2.substr(s_ignored2.size() - 4, 3) == "xyz");
+    CHECK(s_ignored2_ascii.substr(1, 3) == "abc");
+    CHECK(s_ignored2_ascii.substr(s_ignored2_ascii.size() - 4, 3) == "xyz");
+    CHECK(s_replaced2.substr(1, 3) == "abc");
+    CHECK(s_replaced2.substr(s_replaced2.size() - 4, 3) == "xyz");
+    CHECK(s_replaced2_ascii.substr(1, 3) == "abc");
+    CHECK(s_replaced2_ascii.substr(s_replaced2_ascii.size() - 4, 3) == "xyz");
+}
+
+void check_utf8string(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+// create and check a JSON string with up to four UTF-8 bytes
+void check_utf8string(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+    if (++calls % 100000 == 0)
+    {
+        std::cout << calls << " of 1246225 UTF-8 strings checked" << std::endl; // NOLINT(performance-avoid-endl)
+    }
+
+    static std::string json_string;
+    json_string = "\"";
+
+    CAPTURE(byte1)
+    json_string += std::string(1, static_cast<char>(byte1));
+
+    if (byte2 != -1)
+    {
+        CAPTURE(byte2)
+        json_string += std::string(1, static_cast<char>(byte2));
+    }
+
+    if (byte3 != -1)
+    {
+        CAPTURE(byte3)
+        json_string += std::string(1, static_cast<char>(byte3));
+    }
+
+    if (byte4 != -1)
+    {
+        CAPTURE(byte4)
+        json_string += std::string(1, static_cast<char>(byte4));
+    }
+
+    json_string += "\"";
+
+    CAPTURE(json_string)
+
+    json _;
+    if (success_expected)
+    {
+        CHECK_NOTHROW(_ = json::parse(json_string));
+    }
+    else
+    {
+        CHECK_THROWS_AS(_ = json::parse(json_string), json::parse_error&);
+    }
+}
+} // namespace
+
+TEST_CASE("Unicode (5/5)" * doctest::skip())
+{
+    SECTION("RFC 3629")
+    {
+        /*
+        RFC 3629 describes in Sect. 4 the syntax of UTF-8 byte sequences as
+        follows:
+
+            A UTF-8 string is a sequence of octets representing a sequence of UCS
+            characters.  An octet sequence is valid UTF-8 only if it matches the
+            following syntax, which is derived from the rules for encoding UTF-8
+            and is expressed in the ABNF of [RFC2234].
+
+            UTF8-octets = *( UTF8-char )
+            UTF8-char   = UTF8-1 / UTF8-2 / UTF8-3 / UTF8-4
+            UTF8-1      = %x00-7F
+            UTF8-2      = %xC2-DF UTF8-tail
+            UTF8-3      = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
+                          %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
+            UTF8-4      = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
+                          %xF4 %x80-8F 2( UTF8-tail )
+            UTF8-tail   = %x80-BF
+        */
+
+        SECTION("UTF8-4 (xF4 x80-8F UTF8-tail UTF8-tail)")
+        {
+            SECTION("well-formed")
+            {
+                for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(true, byte1, byte2, byte3, byte4);
+                                check_utf8dump(true, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing second byte")
+            {
+                for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+                {
+                    check_utf8string(false, byte1);
+                    check_utf8dump(false, byte1);
+                }
+            }
+
+            SECTION("ill-formed: missing third byte")
+            {
+                for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+                    {
+                        check_utf8string(false, byte1, byte2);
+                        check_utf8dump(false, byte1, byte2);
+                    }
+                }
+            }
+
+            SECTION("ill-formed: missing fourth byte")
+            {
+                for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            check_utf8string(false, byte1, byte2, byte3);
+                            check_utf8dump(false, byte1, byte2, byte3);
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong second byte")
+            {
+                for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+                {
+                    for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+                    {
+                        // skip correct second byte
+                        if (0x80 <= byte2 && byte2 <= 0x8F)
+                        {
+                            continue;
+                        }
+
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong third byte")
+            {
+                for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+                    {
+                        for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
+                        {
+                            // skip correct third byte
+                            if (0x80 <= byte3 && byte3 <= 0xBF)
+                            {
+                                continue;
+                            }
+
+                            for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+                            {
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+
+            SECTION("ill-formed: wrong fourth byte")
+            {
+                for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+                {
+                    for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+                    {
+                        for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+                        {
+                            for (int byte4 = 0x00; byte4 <= 0xFF; ++byte4)
+                            {
+                                // skip correct fourth byte
+                                if (0x80 <= byte3 && byte3 <= 0xBF)
+                                {
+                                    continue;
+                                }
+
+                                check_utf8string(false, byte1, byte2, byte3, byte4);
+                                check_utf8dump(false, byte1, byte2, byte3, byte4);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-user_defined_input.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-user_defined_input.cpp
new file mode 100644
index 00000000..e4460d56
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-user_defined_input.cpp
@@ -0,0 +1,130 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <list>
+
+namespace
+{
+TEST_CASE("Use arbitrary stdlib container")
+{
+    std::string raw_data = "[1,2,3,4]";
+    std::list<char> data(raw_data.begin(), raw_data.end());
+
+    json as_json = json::parse(data.begin(), data.end());
+    CHECK(as_json.at(0) == 1);
+    CHECK(as_json.at(1) == 2);
+    CHECK(as_json.at(2) == 3);
+    CHECK(as_json.at(3) == 4);
+}
+
+struct MyContainer
+{
+    const char* data;
+};
+
+const char* begin(const MyContainer& c)
+{
+    return c.data;
+}
+
+const char* end(const MyContainer& c)
+{
+    return c.data + strlen(c.data); // NOLINT(cppcoreguidelines-pro-bounds-pointer-arithmetic)
+}
+
+TEST_CASE("Custom container non-member begin/end")
+{
+
+    const MyContainer data{"[1,2,3,4]"};
+    json as_json = json::parse(data);
+    CHECK(as_json.at(0) == 1);
+    CHECK(as_json.at(1) == 2);
+    CHECK(as_json.at(2) == 3);
+    CHECK(as_json.at(3) == 4);
+
+}
+
+TEST_CASE("Custom container member begin/end")
+{
+    struct MyContainer2
+    {
+        const char* data;
+
+        const char* begin() const
+        {
+            return data;
+        }
+
+        const char* end() const
+        {
+            return data + strlen(data); // NOLINT(cppcoreguidelines-pro-bounds-pointer-arithmetic)
+        }
+    };
+
+    const MyContainer2 data{"[1,2,3,4]"};
+    json as_json = json::parse(data);
+    CHECK(as_json.at(0) == 1);
+    CHECK(as_json.at(1) == 2);
+    CHECK(as_json.at(2) == 3);
+    CHECK(as_json.at(3) == 4);
+}
+
+TEST_CASE("Custom iterator")
+{
+    const char* raw_data = "[1,2,3,4]";
+
+    struct MyIterator
+    {
+        using difference_type = std::size_t;
+        using value_type = char;
+        using pointer = const char*;
+        using reference = const char&;
+        using iterator_category = std::input_iterator_tag;
+
+        MyIterator& operator++()
+        {
+            ++ptr; // NOLINT(cppcoreguidelines-pro-bounds-pointer-arithmetic)
+            return *this;
+        }
+
+        reference operator*() const
+        {
+            return *ptr;
+        }
+
+        bool operator!=(const MyIterator& rhs) const
+        {
+            return ptr != rhs.ptr;
+        }
+
+        const char* ptr;
+    };
+
+    // avoid -Wunused-local-typedefs
+    CHECK(std::is_same<MyIterator::difference_type, std::size_t>::value);
+    CHECK(std::is_same<MyIterator::value_type, char>::value);
+    CHECK(std::is_same<MyIterator::pointer, const char*>::value);
+    CHECK(std::is_same<MyIterator::reference, const char&>::value);
+    CHECK(std::is_same<MyIterator::iterator_category, std::input_iterator_tag>::value);
+
+    const MyIterator begin{raw_data};
+    const MyIterator end{raw_data + strlen(raw_data)}; // NOLINT(cppcoreguidelines-pro-bounds-pointer-arithmetic)
+
+    json as_json = json::parse(begin, end);
+    CHECK(as_json.at(0) == 1);
+    CHECK(as_json.at(1) == 2);
+    CHECK(as_json.at(2) == 3);
+    CHECK(as_json.at(3) == 4);
+}
+
+} // namespace
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-windows_h.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-windows_h.cpp
new file mode 100644
index 00000000..8ae4c811
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-windows_h.cpp
@@ -0,0 +1,23 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+#undef WIN32_LEAN_AND_MEAN
+#undef NOMINMAX
+
+#ifdef _WIN32
+    #include <windows.h>
+#endif
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+TEST_CASE("include windows.h")
+{
+    CHECK(true);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-wstring.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-wstring.cpp
new file mode 100644
index 00000000..7394d25d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit-wstring.cpp
@@ -0,0 +1,99 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+// ICPC errors out on multibyte character sequences in source files
+#ifndef __INTEL_COMPILER
+namespace
+{
+bool wstring_is_utf16();
+bool wstring_is_utf16()
+{
+    return (std::wstring(L"💩") == std::wstring(L"\U0001F4A9"));
+}
+
+bool u16string_is_utf16();
+bool u16string_is_utf16()
+{
+    return (std::u16string(u"💩") == std::u16string(u"\U0001F4A9"));
+}
+
+bool u32string_is_utf32();
+bool u32string_is_utf32()
+{
+    return (std::u32string(U"💩") == std::u32string(U"\U0001F4A9"));
+}
+} // namespace
+
+TEST_CASE("wide strings")
+{
+    SECTION("std::wstring")
+    {
+        if (wstring_is_utf16())
+        {
+            std::wstring const w = L"[12.2,\"Ⴥaäö💤🧢\"]";
+            json const j = json::parse(w);
+            CHECK(j.dump() == "[12.2,\"Ⴥaäö💤🧢\"]");
+        }
+    }
+
+    SECTION("invalid std::wstring")
+    {
+        if (wstring_is_utf16())
+        {
+            std::wstring const w = L"\"\xDBFF";
+            json _;
+            CHECK_THROWS_AS(_ = json::parse(w), json::parse_error&);
+        }
+    }
+
+    SECTION("std::u16string")
+    {
+        if (u16string_is_utf16())
+        {
+            std::u16string const w = u"[12.2,\"Ⴥaäö💤🧢\"]";
+            json const j = json::parse(w);
+            CHECK(j.dump() == "[12.2,\"Ⴥaäö💤🧢\"]");
+        }
+    }
+
+    SECTION("invalid std::u16string")
+    {
+        if (wstring_is_utf16())
+        {
+            std::u16string const w = u"\"\xDBFF";
+            json _;
+            CHECK_THROWS_AS(_ = json::parse(w), json::parse_error&);
+        }
+    }
+
+    SECTION("std::u32string")
+    {
+        if (u32string_is_utf32())
+        {
+            std::u32string const w = U"[12.2,\"Ⴥaäö💤🧢\"]";
+            json const j = json::parse(w);
+            CHECK(j.dump() == "[12.2,\"Ⴥaäö💤🧢\"]");
+        }
+    }
+
+    SECTION("invalid std::u32string")
+    {
+        if (u32string_is_utf32())
+        {
+            std::u32string const w = U"\"\x110000";
+            json _;
+            CHECK_THROWS_AS(_ = json::parse(w), json::parse_error&);
+        }
+    }
+}
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit.cpp
new file mode 100644
index 00000000..523cda91
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/src/unit.cpp
@@ -0,0 +1,10 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013 - 2024 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest_compatibility.h"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/CMakeLists.txt
new file mode 100644
index 00000000..70bd017b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/CMakeLists.txt
@@ -0,0 +1,45 @@
+set(LIBFUZZER_FLAGS_BASE "${CMAKE_CXX_FLAGS}")
+# Disable the coverage and sanitizer instrumentation for the fuzzer itself.
+set(CMAKE_CXX_FLAGS "${LIBFUZZER_FLAGS_BASE} -fno-sanitize-coverage=trace-pc-guard,edge,trace-cmp,indirect-calls,8bit-counters -Werror")
+if( LLVM_USE_SANITIZE_COVERAGE )
+  if(NOT "${LLVM_USE_SANITIZER}" STREQUAL "Address")
+    message(FATAL_ERROR
+      "LibFuzzer and its tests require LLVM_USE_SANITIZER=Address and "
+      "LLVM_USE_SANITIZE_COVERAGE=YES to be set."
+      )
+  endif()
+  add_library(LLVMFuzzerNoMainObjects OBJECT
+    FuzzerCrossOver.cpp
+    FuzzerDriver.cpp
+    FuzzerExtFunctionsDlsym.cpp
+    FuzzerExtFunctionsWeak.cpp
+    FuzzerExtFunctionsWeakAlias.cpp
+    FuzzerIO.cpp
+    FuzzerIOPosix.cpp
+    FuzzerIOWindows.cpp
+    FuzzerLoop.cpp
+    FuzzerMerge.cpp
+    FuzzerMutate.cpp
+    FuzzerSHA1.cpp
+    FuzzerTracePC.cpp
+    FuzzerTraceState.cpp
+    FuzzerUtil.cpp
+    FuzzerUtilDarwin.cpp
+    FuzzerUtilLinux.cpp
+    FuzzerUtilPosix.cpp
+    FuzzerUtilWindows.cpp
+    )
+  add_library(LLVMFuzzerNoMain STATIC
+    $<TARGET_OBJECTS:LLVMFuzzerNoMainObjects>
+    )
+  target_link_libraries(LLVMFuzzerNoMain ${PTHREAD_LIB})
+  add_library(LLVMFuzzer STATIC
+    FuzzerMain.cpp
+    $<TARGET_OBJECTS:LLVMFuzzerNoMainObjects>
+    )
+  target_link_libraries(LLVMFuzzer ${PTHREAD_LIB})
+
+  if( LLVM_INCLUDE_TESTS )
+    add_subdirectory(test)
+  endif()
+endif()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerCorpus.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerCorpus.h
new file mode 100644
index 00000000..663c5854
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerCorpus.h
@@ -0,0 +1,217 @@
+//===- FuzzerCorpus.h - Internal header for the Fuzzer ----------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// fuzzer::InputCorpus
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_CORPUS
+#define LLVM_FUZZER_CORPUS
+
+#include "FuzzerDefs.h"
+#include "FuzzerIO.h"
+#include "FuzzerRandom.h"
+#include "FuzzerSHA1.h"
+#include "FuzzerTracePC.h"
+#include <numeric>
+#include <random>
+#include <unordered_set>
+
+namespace fuzzer {
+
+struct InputInfo {
+  Unit U;  // The actual input data.
+  uint8_t Sha1[kSHA1NumBytes];  // Checksum.
+  // Number of features that this input has and no smaller input has.
+  size_t NumFeatures = 0;
+  size_t Tmp = 0; // Used by ValidateFeatureSet.
+  // Stats.
+  size_t NumExecutedMutations = 0;
+  size_t NumSuccessfullMutations = 0;
+  bool MayDeleteFile = false;
+};
+
+class InputCorpus {
+ public:
+  static const size_t kFeatureSetSize = 1 << 16;
+  InputCorpus(const std::string &OutputCorpus) : OutputCorpus(OutputCorpus) {
+    memset(InputSizesPerFeature, 0, sizeof(InputSizesPerFeature));
+    memset(SmallestElementPerFeature, 0, sizeof(SmallestElementPerFeature));
+  }
+  ~InputCorpus() {
+    for (auto II : Inputs)
+      delete II;
+  }
+  size_t size() const { return Inputs.size(); }
+  size_t SizeInBytes() const {
+    size_t Res = 0;
+    for (auto II : Inputs)
+      Res += II->U.size();
+    return Res;
+  }
+  size_t NumActiveUnits() const {
+    size_t Res = 0;
+    for (auto II : Inputs)
+      Res += !II->U.empty();
+    return Res;
+  }
+  bool empty() const { return Inputs.empty(); }
+  const Unit &operator[] (size_t Idx) const { return Inputs[Idx]->U; }
+  void AddToCorpus(const Unit &U, size_t NumFeatures, bool MayDeleteFile = false) {
+    assert(!U.empty());
+    uint8_t Hash[kSHA1NumBytes];
+    if (FeatureDebug)
+      Printf("ADD_TO_CORPUS %zd NF %zd\n", Inputs.size(), NumFeatures);
+    ComputeSHA1(U.data(), U.size(), Hash);
+    Hashes.insert(Sha1ToString(Hash));
+    Inputs.push_back(new InputInfo());
+    InputInfo &II = *Inputs.back();
+    II.U = U;
+    II.NumFeatures = NumFeatures;
+    II.MayDeleteFile = MayDeleteFile;
+    memcpy(II.Sha1, Hash, kSHA1NumBytes);
+    UpdateCorpusDistribution();
+    ValidateFeatureSet();
+  }
+
+  bool HasUnit(const Unit &U) { return Hashes.count(Hash(U)); }
+  bool HasUnit(const std::string &H) { return Hashes.count(H); }
+  InputInfo &ChooseUnitToMutate(Random &Rand) {
+    InputInfo &II = *Inputs[ChooseUnitIdxToMutate(Rand)];
+    assert(!II.U.empty());
+    return II;
+  };
+
+  // Returns an index of random unit from the corpus to mutate.
+  // Hypothesis: units added to the corpus last are more likely to be
+  // interesting. This function gives more weight to the more recent units.
+  size_t ChooseUnitIdxToMutate(Random &Rand) {
+    size_t Idx = static_cast<size_t>(CorpusDistribution(Rand.Get_mt19937()));
+    assert(Idx < Inputs.size());
+    return Idx;
+  }
+
+  void PrintStats() {
+    for (size_t i = 0; i < Inputs.size(); i++) {
+      const auto &II = *Inputs[i];
+      Printf("  [%zd %s]\tsz: %zd\truns: %zd\tsucc: %zd\n", i,
+             Sha1ToString(II.Sha1).c_str(), II.U.size(),
+             II.NumExecutedMutations, II.NumSuccessfullMutations);
+    }
+  }
+
+  void PrintFeatureSet() {
+    for (size_t i = 0; i < kFeatureSetSize; i++) {
+      if(size_t Sz = GetFeature(i))
+        Printf("[%zd: id %zd sz%zd] ", i, SmallestElementPerFeature[i], Sz);
+    }
+    Printf("\n\t");
+    for (size_t i = 0; i < Inputs.size(); i++)
+      if (size_t N = Inputs[i]->NumFeatures)
+        Printf(" %zd=>%zd ", i, N);
+    Printf("\n");
+  }
+
+  void DeleteInput(size_t Idx) {
+    InputInfo &II = *Inputs[Idx];
+    if (!OutputCorpus.empty() && II.MayDeleteFile)
+      RemoveFile(DirPlusFile(OutputCorpus, Sha1ToString(II.Sha1)));
+    Unit().swap(II.U);
+    if (FeatureDebug)
+      Printf("EVICTED %zd\n", Idx);
+  }
+
+  bool AddFeature(size_t Idx, uint32_t NewSize, bool Shrink) {
+    assert(NewSize);
+    Idx = Idx % kFeatureSetSize;
+    uint32_t OldSize = GetFeature(Idx);
+    if (OldSize == 0 || (Shrink && OldSize > NewSize)) {
+      if (OldSize > 0) {
+        size_t OldIdx = SmallestElementPerFeature[Idx];
+        InputInfo &II = *Inputs[OldIdx];
+        assert(II.NumFeatures > 0);
+        II.NumFeatures--;
+        if (II.NumFeatures == 0)
+          DeleteInput(OldIdx);
+      }
+      if (FeatureDebug)
+        Printf("ADD FEATURE %zd sz %d\n", Idx, NewSize);
+      SmallestElementPerFeature[Idx] = Inputs.size();
+      InputSizesPerFeature[Idx] = NewSize;
+      CountingFeatures = true;
+      return true;
+    }
+    return false;
+  }
+
+  size_t NumFeatures() const {
+    size_t Res = 0;
+    for (size_t i = 0; i < kFeatureSetSize; i++)
+      Res += GetFeature(i) != 0;
+    return Res;
+  }
+
+  void ResetFeatureSet() {
+    assert(Inputs.empty());
+    memset(InputSizesPerFeature, 0, sizeof(InputSizesPerFeature));
+    memset(SmallestElementPerFeature, 0, sizeof(SmallestElementPerFeature));
+  }
+
+private:
+
+  static const bool FeatureDebug = false;
+
+  size_t GetFeature(size_t Idx) const { return InputSizesPerFeature[Idx]; }
+
+  void ValidateFeatureSet() {
+    if (!CountingFeatures) return;
+    if (FeatureDebug)
+      PrintFeatureSet();
+    for (size_t Idx = 0; Idx < kFeatureSetSize; Idx++)
+      if (GetFeature(Idx))
+        Inputs[SmallestElementPerFeature[Idx]]->Tmp++;
+    for (auto II: Inputs) {
+      if (II->Tmp != II->NumFeatures)
+        Printf("ZZZ %zd %zd\n", II->Tmp, II->NumFeatures);
+      assert(II->Tmp == II->NumFeatures);
+      II->Tmp = 0;
+    }
+  }
+
+  // Updates the probability distribution for the units in the corpus.
+  // Must be called whenever the corpus or unit weights are changed.
+  void UpdateCorpusDistribution() {
+    size_t N = Inputs.size();
+    Intervals.resize(N + 1);
+    Weights.resize(N);
+    std::iota(Intervals.begin(), Intervals.end(), 0);
+    if (CountingFeatures)
+      for (size_t i = 0; i < N; i++)
+        Weights[i] = Inputs[i]->NumFeatures * (i + 1);
+    else
+      std::iota(Weights.begin(), Weights.end(), 1);
+    CorpusDistribution = std::piecewise_constant_distribution<double>(
+        Intervals.begin(), Intervals.end(), Weights.begin());
+  }
+  std::piecewise_constant_distribution<double> CorpusDistribution;
+
+  std::vector<double> Intervals;
+  std::vector<double> Weights;
+
+  std::unordered_set<std::string> Hashes;
+  std::vector<InputInfo*> Inputs;
+
+  bool CountingFeatures = false;
+  uint32_t InputSizesPerFeature[kFeatureSetSize];
+  uint32_t SmallestElementPerFeature[kFeatureSetSize];
+
+  std::string OutputCorpus;
+};
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_CORPUS
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerCrossOver.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerCrossOver.cpp
new file mode 100644
index 00000000..8b0fd7d5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerCrossOver.cpp
@@ -0,0 +1,52 @@
+//===- FuzzerCrossOver.cpp - Cross over two test inputs -------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Cross over test inputs.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerDefs.h"
+#include "FuzzerMutate.h"
+#include "FuzzerRandom.h"
+#include <cstring>
+
+namespace fuzzer {
+
+// Cross Data1 and Data2, store the result (up to MaxOutSize bytes) in Out.
+size_t MutationDispatcher::CrossOver(const uint8_t *Data1, size_t Size1,
+                                     const uint8_t *Data2, size_t Size2,
+                                     uint8_t *Out, size_t MaxOutSize) {
+  assert(Size1 || Size2);
+  MaxOutSize = Rand(MaxOutSize) + 1;
+  size_t OutPos = 0;
+  size_t Pos1 = 0;
+  size_t Pos2 = 0;
+  size_t *InPos = &Pos1;
+  size_t InSize = Size1;
+  const uint8_t *Data = Data1;
+  bool CurrentlyUsingFirstData = true;
+  while (OutPos < MaxOutSize && (Pos1 < Size1 || Pos2 < Size2)) {
+    // Merge a part of Data into Out.
+    size_t OutSizeLeft = MaxOutSize - OutPos;
+    if (*InPos < InSize) {
+      size_t InSizeLeft = InSize - *InPos;
+      size_t MaxExtraSize = std::min(OutSizeLeft, InSizeLeft);
+      size_t ExtraSize = Rand(MaxExtraSize) + 1;
+      memcpy(Out + OutPos, Data + *InPos, ExtraSize);
+      OutPos += ExtraSize;
+      (*InPos) += ExtraSize;
+    }
+    // Use the other input data on the next iteration.
+    InPos  = CurrentlyUsingFirstData ? &Pos2 : &Pos1;
+    InSize = CurrentlyUsingFirstData ? Size2 : Size1;
+    Data   = CurrentlyUsingFirstData ? Data2 : Data1;
+    CurrentlyUsingFirstData = !CurrentlyUsingFirstData;
+  }
+  return OutPos;
+}
+
+}  // namespace fuzzer
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDefs.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDefs.h
new file mode 100644
index 00000000..0f5b8a7c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDefs.h
@@ -0,0 +1,89 @@
+//===- FuzzerDefs.h - Internal header for the Fuzzer ------------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Basic definitions.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_DEFS_H
+#define LLVM_FUZZER_DEFS_H
+
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <cstring>
+#include <string>
+#include <vector>
+
+// Platform detection.
+#ifdef __linux__
+#define LIBFUZZER_APPLE 0
+#define LIBFUZZER_LINUX 1
+#define LIBFUZZER_WINDOWS 0
+#elif __APPLE__
+#define LIBFUZZER_APPLE 1
+#define LIBFUZZER_LINUX 0
+#define LIBFUZZER_WINDOWS 0
+#elif _WIN32
+#define LIBFUZZER_APPLE 0
+#define LIBFUZZER_LINUX 0
+#define LIBFUZZER_WINDOWS 1
+#else
+#error "Support for your platform has not been implemented"
+#endif
+
+#define LIBFUZZER_POSIX LIBFUZZER_APPLE || LIBFUZZER_LINUX
+
+#ifdef __x86_64
+#define ATTRIBUTE_TARGET_POPCNT __attribute__((target("popcnt")))
+#else
+#define ATTRIBUTE_TARGET_POPCNT
+#endif
+
+
+#ifdef __clang__  // avoid gcc warning.
+#  define ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory")))
+#else
+#  define ATTRIBUTE_NO_SANITIZE_MEMORY
+#endif
+
+namespace fuzzer {
+
+template <class T> T Min(T a, T b) { return a < b ? a : b; }
+template <class T> T Max(T a, T b) { return a > b ? a : b; }
+
+class Random;
+class Dictionary;
+class DictionaryEntry;
+class MutationDispatcher;
+struct FuzzingOptions;
+class InputCorpus;
+struct InputInfo;
+struct ExternalFunctions;
+
+// Global interface to functions that may or may not be available.
+extern ExternalFunctions *EF;
+
+typedef std::vector<uint8_t> Unit;
+typedef std::vector<Unit> UnitVector;
+typedef int (*UserCallback)(const uint8_t *Data, size_t Size);
+
+int FuzzerDriver(int *argc, char ***argv, UserCallback Callback);
+
+struct ScopedDoingMyOwnMemmem {
+  ScopedDoingMyOwnMemmem();
+  ~ScopedDoingMyOwnMemmem();
+};
+
+inline uint8_t  Bswap(uint8_t x)  { return x; }
+inline uint16_t Bswap(uint16_t x) { return __builtin_bswap16(x); }
+inline uint32_t Bswap(uint32_t x) { return __builtin_bswap32(x); }
+inline uint64_t Bswap(uint64_t x) { return __builtin_bswap64(x); }
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_DEFS_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDictionary.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDictionary.h
new file mode 100644
index 00000000..eba0eabb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDictionary.h
@@ -0,0 +1,124 @@
+//===- FuzzerDictionary.h - Internal header for the Fuzzer ------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// fuzzer::Dictionary
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_DICTIONARY_H
+#define LLVM_FUZZER_DICTIONARY_H
+
+#include "FuzzerDefs.h"
+#include "FuzzerIO.h"
+#include "FuzzerUtil.h"
+#include <algorithm>
+#include <limits>
+
+namespace fuzzer {
+// A simple POD sized array of bytes.
+template <size_t kMaxSize> class FixedWord {
+public:
+  FixedWord() {}
+  FixedWord(const uint8_t *B, uint8_t S) { Set(B, S); }
+
+  void Set(const uint8_t *B, uint8_t S) {
+    assert(S <= kMaxSize);
+    memcpy(Data, B, S);
+    Size = S;
+  }
+
+  bool operator==(const FixedWord<kMaxSize> &w) const {
+    return Size == w.Size && 0 == memcmp(Data, w.Data, Size);
+  }
+
+  bool operator<(const FixedWord<kMaxSize> &w) const {
+    if (Size != w.Size)
+      return Size < w.Size;
+    return memcmp(Data, w.Data, Size) < 0;
+  }
+
+  static size_t GetMaxSize() { return kMaxSize; }
+  const uint8_t *data() const { return Data; }
+  uint8_t size() const { return Size; }
+
+private:
+  uint8_t Size = 0;
+  uint8_t Data[kMaxSize];
+};
+
+typedef FixedWord<27> Word; // 28 bytes.
+
+class DictionaryEntry {
+ public:
+  DictionaryEntry() {}
+  DictionaryEntry(Word W) : W(W) {}
+  DictionaryEntry(Word W, size_t PositionHint) : W(W), PositionHint(PositionHint) {}
+  const Word &GetW() const { return W; }
+
+  bool HasPositionHint() const { return PositionHint != std::numeric_limits<size_t>::max(); }
+  size_t GetPositionHint() const {
+    assert(HasPositionHint());
+    return PositionHint;
+  }
+  void IncUseCount() { UseCount++; }
+  void IncSuccessCount() { SuccessCount++; }
+  size_t GetUseCount() const { return UseCount; }
+  size_t GetSuccessCount() const {return SuccessCount; }
+
+  void Print(const char *PrintAfter = "\n") {
+    PrintASCII(W.data(), W.size());
+    if (HasPositionHint())
+      Printf("@%zd", GetPositionHint());
+    Printf("%s", PrintAfter);
+  }
+
+private:
+  Word W;
+  size_t PositionHint = std::numeric_limits<size_t>::max();
+  size_t UseCount = 0;
+  size_t SuccessCount = 0;
+};
+
+class Dictionary {
+ public:
+  static const size_t kMaxDictSize = 1 << 14;
+
+  bool ContainsWord(const Word &W) const {
+    return std::any_of(begin(), end(), [&](const DictionaryEntry &DE) {
+      return DE.GetW() == W;
+    });
+  }
+  const DictionaryEntry *begin() const { return &DE[0]; }
+  const DictionaryEntry *end() const { return begin() + Size; }
+  DictionaryEntry & operator[] (size_t Idx) {
+    assert(Idx < Size);
+    return DE[Idx];
+  }
+  void push_back(DictionaryEntry DE) {
+    if (Size < kMaxDictSize)
+      this->DE[Size++] = DE;
+  }
+  void clear() { Size = 0; }
+  bool empty() const { return Size == 0; }
+  size_t size() const { return Size; }
+
+private:
+  DictionaryEntry DE[kMaxDictSize];
+  size_t Size = 0;
+};
+
+// Parses one dictionary entry.
+// If successfull, write the enty to Unit and returns true,
+// otherwise returns false.
+bool ParseOneDictionaryEntry(const std::string &Str, Unit *U);
+// Parses the dictionary file, fills Units, returns true iff all lines
+// were parsed succesfully.
+bool ParseDictionaryFile(const std::string &Text, std::vector<Unit> *Units);
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_DICTIONARY_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDriver.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDriver.cpp
new file mode 100644
index 00000000..5ab6df2d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerDriver.cpp
@@ -0,0 +1,545 @@
+//===- FuzzerDriver.cpp - FuzzerDriver function and flags -----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// FuzzerDriver and flag parsing.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerCorpus.h"
+#include "FuzzerInterface.h"
+#include "FuzzerInternal.h"
+#include "FuzzerIO.h"
+#include "FuzzerMutate.h"
+#include "FuzzerRandom.h"
+#include "FuzzerTracePC.h"
+#include <algorithm>
+#include <atomic>
+#include <chrono>
+#include <cstring>
+#include <mutex>
+#include <string>
+#include <thread>
+
+// This function should be present in the libFuzzer so that the client
+// binary can test for its existence.
+extern "C" __attribute__((used)) void __libfuzzer_is_present() {}
+
+namespace fuzzer {
+
+// Program arguments.
+struct FlagDescription {
+  const char *Name;
+  const char *Description;
+  int   Default;
+  int   *IntFlag;
+  const char **StrFlag;
+  unsigned int *UIntFlag;
+};
+
+struct {
+#define FUZZER_DEPRECATED_FLAG(Name)
+#define FUZZER_FLAG_INT(Name, Default, Description) int Name;
+#define FUZZER_FLAG_UNSIGNED(Name, Default, Description) unsigned int Name;
+#define FUZZER_FLAG_STRING(Name, Description) const char *Name;
+#include "FuzzerFlags.def"
+#undef FUZZER_DEPRECATED_FLAG
+#undef FUZZER_FLAG_INT
+#undef FUZZER_FLAG_UNSIGNED
+#undef FUZZER_FLAG_STRING
+} Flags;
+
+static const FlagDescription FlagDescriptions [] {
+#define FUZZER_DEPRECATED_FLAG(Name)                                           \
+  {#Name, "Deprecated; don't use", 0, nullptr, nullptr, nullptr},
+#define FUZZER_FLAG_INT(Name, Default, Description)                            \
+  {#Name, Description, Default, &Flags.Name, nullptr, nullptr},
+#define FUZZER_FLAG_UNSIGNED(Name, Default, Description)                       \
+  {#Name,   Description, static_cast<int>(Default),                            \
+   nullptr, nullptr, &Flags.Name},
+#define FUZZER_FLAG_STRING(Name, Description)                                  \
+  {#Name, Description, 0, nullptr, &Flags.Name, nullptr},
+#include "FuzzerFlags.def"
+#undef FUZZER_DEPRECATED_FLAG
+#undef FUZZER_FLAG_INT
+#undef FUZZER_FLAG_UNSIGNED
+#undef FUZZER_FLAG_STRING
+};
+
+static const size_t kNumFlags =
+    sizeof(FlagDescriptions) / sizeof(FlagDescriptions[0]);
+
+static std::vector<std::string> *Inputs;
+static std::string *ProgName;
+
+static void PrintHelp() {
+  Printf("Usage:\n");
+  auto Prog = ProgName->c_str();
+  Printf("\nTo run fuzzing pass 0 or more directories.\n");
+  Printf("%s [-flag1=val1 [-flag2=val2 ...] ] [dir1 [dir2 ...] ]\n", Prog);
+
+  Printf("\nTo run individual tests without fuzzing pass 1 or more files:\n");
+  Printf("%s [-flag1=val1 [-flag2=val2 ...] ] file1 [file2 ...]\n", Prog);
+
+  Printf("\nFlags: (strictly in form -flag=value)\n");
+  size_t MaxFlagLen = 0;
+  for (size_t F = 0; F < kNumFlags; F++)
+    MaxFlagLen = std::max(strlen(FlagDescriptions[F].Name), MaxFlagLen);
+
+  for (size_t F = 0; F < kNumFlags; F++) {
+    const auto &D = FlagDescriptions[F];
+    if (strstr(D.Description, "internal flag") == D.Description) continue;
+    Printf(" %s", D.Name);
+    for (size_t i = 0, n = MaxFlagLen - strlen(D.Name); i < n; i++)
+      Printf(" ");
+    Printf("\t");
+    Printf("%d\t%s\n", D.Default, D.Description);
+  }
+  Printf("\nFlags starting with '--' will be ignored and "
+            "will be passed verbatim to subprocesses.\n");
+}
+
+static const char *FlagValue(const char *Param, const char *Name) {
+  size_t Len = strlen(Name);
+  if (Param[0] == '-' && strstr(Param + 1, Name) == Param + 1 &&
+      Param[Len + 1] == '=')
+      return &Param[Len + 2];
+  return nullptr;
+}
+
+// Avoid calling stol as it triggers a bug in clang/glibc build.
+static long MyStol(const char *Str) {
+  long Res = 0;
+  long Sign = 1;
+  if (*Str == '-') {
+    Str++;
+    Sign = -1;
+  }
+  for (size_t i = 0; Str[i]; i++) {
+    char Ch = Str[i];
+    if (Ch < '0' || Ch > '9')
+      return Res;
+    Res = Res * 10 + (Ch - '0');
+  }
+  return Res * Sign;
+}
+
+static bool ParseOneFlag(const char *Param) {
+  if (Param[0] != '-') return false;
+  if (Param[1] == '-') {
+    static bool PrintedWarning = false;
+    if (!PrintedWarning) {
+      PrintedWarning = true;
+      Printf("INFO: libFuzzer ignores flags that start with '--'\n");
+    }
+    for (size_t F = 0; F < kNumFlags; F++)
+      if (FlagValue(Param + 1, FlagDescriptions[F].Name))
+        Printf("WARNING: did you mean '%s' (single dash)?\n", Param + 1);
+    return true;
+  }
+  for (size_t F = 0; F < kNumFlags; F++) {
+    const char *Name = FlagDescriptions[F].Name;
+    const char *Str = FlagValue(Param, Name);
+    if (Str)  {
+      if (FlagDescriptions[F].IntFlag) {
+        int Val = MyStol(Str);
+        *FlagDescriptions[F].IntFlag = Val;
+        if (Flags.verbosity >= 2)
+          Printf("Flag: %s %d\n", Name, Val);
+        return true;
+      } else if (FlagDescriptions[F].UIntFlag) {
+        unsigned int Val = std::stoul(Str);
+        *FlagDescriptions[F].UIntFlag = Val;
+        if (Flags.verbosity >= 2)
+          Printf("Flag: %s %u\n", Name, Val);
+        return true;
+      } else if (FlagDescriptions[F].StrFlag) {
+        *FlagDescriptions[F].StrFlag = Str;
+        if (Flags.verbosity >= 2)
+          Printf("Flag: %s %s\n", Name, Str);
+        return true;
+      } else {  // Deprecated flag.
+        Printf("Flag: %s: deprecated, don't use\n", Name);
+        return true;
+      }
+    }
+  }
+  Printf("\n\nWARNING: unrecognized flag '%s'; "
+         "use -help=1 to list all flags\n\n", Param);
+  return true;
+}
+
+// We don't use any library to minimize dependencies.
+static void ParseFlags(const std::vector<std::string> &Args) {
+  for (size_t F = 0; F < kNumFlags; F++) {
+    if (FlagDescriptions[F].IntFlag)
+      *FlagDescriptions[F].IntFlag = FlagDescriptions[F].Default;
+    if (FlagDescriptions[F].UIntFlag)
+      *FlagDescriptions[F].UIntFlag =
+          static_cast<unsigned int>(FlagDescriptions[F].Default);
+    if (FlagDescriptions[F].StrFlag)
+      *FlagDescriptions[F].StrFlag = nullptr;
+  }
+  Inputs = new std::vector<std::string>;
+  for (size_t A = 1; A < Args.size(); A++) {
+    if (ParseOneFlag(Args[A].c_str())) continue;
+    Inputs->push_back(Args[A]);
+  }
+}
+
+static std::mutex Mu;
+
+static void PulseThread() {
+  while (true) {
+    SleepSeconds(600);
+    std::lock_guard<std::mutex> Lock(Mu);
+    Printf("pulse...\n");
+  }
+}
+
+static void WorkerThread(const std::string &Cmd, std::atomic<unsigned> *Counter,
+                         unsigned NumJobs, std::atomic<bool> *HasErrors) {
+  while (true) {
+    unsigned C = (*Counter)++;
+    if (C >= NumJobs) break;
+    std::string Log = "fuzz-" + std::to_string(C) + ".log";
+    std::string ToRun = Cmd + " > " + Log + " 2>&1\n";
+    if (Flags.verbosity)
+      Printf("%s", ToRun.c_str());
+    int ExitCode = ExecuteCommand(ToRun);
+    if (ExitCode != 0)
+      *HasErrors = true;
+    std::lock_guard<std::mutex> Lock(Mu);
+    Printf("================== Job %u exited with exit code %d ============\n",
+           C, ExitCode);
+    fuzzer::CopyFileToErr(Log);
+  }
+}
+
+std::string CloneArgsWithoutX(const std::vector<std::string> &Args,
+                              const char *X1, const char *X2) {
+  std::string Cmd;
+  for (auto &S : Args) {
+    if (FlagValue(S.c_str(), X1) || FlagValue(S.c_str(), X2))
+      continue;
+    Cmd += S + " ";
+  }
+  return Cmd;
+}
+
+static int RunInMultipleProcesses(const std::vector<std::string> &Args,
+                                  unsigned NumWorkers, unsigned NumJobs) {
+  std::atomic<unsigned> Counter(0);
+  std::atomic<bool> HasErrors(false);
+  std::string Cmd = CloneArgsWithoutX(Args, "jobs", "workers");
+  std::vector<std::thread> V;
+  std::thread Pulse(PulseThread);
+  Pulse.detach();
+  for (unsigned i = 0; i < NumWorkers; i++)
+    V.push_back(std::thread(WorkerThread, Cmd, &Counter, NumJobs, &HasErrors));
+  for (auto &T : V)
+    T.join();
+  return HasErrors ? 1 : 0;
+}
+
+static void RssThread(Fuzzer *F, size_t RssLimitMb) {
+  while (true) {
+    SleepSeconds(1);
+    size_t Peak = GetPeakRSSMb();
+    if (Peak > RssLimitMb)
+      F->RssLimitCallback();
+  }
+}
+
+static void StartRssThread(Fuzzer *F, size_t RssLimitMb) {
+  if (!RssLimitMb) return;
+  std::thread T(RssThread, F, RssLimitMb);
+  T.detach();
+}
+
+int RunOneTest(Fuzzer *F, const char *InputFilePath, size_t MaxLen) {
+  Unit U = FileToVector(InputFilePath);
+  if (MaxLen && MaxLen < U.size())
+    U.resize(MaxLen);
+  F->RunOne(U.data(), U.size());
+  F->TryDetectingAMemoryLeak(U.data(), U.size(), true);
+  return 0;
+}
+
+static bool AllInputsAreFiles() {
+  if (Inputs->empty()) return false;
+  for (auto &Path : *Inputs)
+    if (!IsFile(Path))
+      return false;
+  return true;
+}
+
+int MinimizeCrashInput(const std::vector<std::string> &Args) {
+  if (Inputs->size() != 1) {
+    Printf("ERROR: -minimize_crash should be given one input file\n");
+    exit(1);
+  }
+  std::string InputFilePath = Inputs->at(0);
+  std::string BaseCmd =
+      CloneArgsWithoutX(Args, "minimize_crash", "exact_artifact_path");
+  auto InputPos = BaseCmd.find(" " + InputFilePath + " ");
+  assert(InputPos != std::string::npos);
+  BaseCmd.erase(InputPos, InputFilePath.size() + 1);
+  if (Flags.runs <= 0 && Flags.max_total_time == 0) {
+    Printf("INFO: you need to specify -runs=N or "
+           "-max_total_time=N with -minimize_crash=1\n"
+           "INFO: defaulting to -max_total_time=600\n");
+    BaseCmd += " -max_total_time=600";
+  }
+  // BaseCmd += " >  /dev/null 2>&1 ";
+
+  std::string CurrentFilePath = InputFilePath;
+  while (true) {
+    Unit U = FileToVector(CurrentFilePath);
+    if (U.size() < 2) {
+      Printf("CRASH_MIN: '%s' is small enough\n", CurrentFilePath.c_str());
+      return 0;
+    }
+    Printf("CRASH_MIN: minimizing crash input: '%s' (%zd bytes)\n",
+           CurrentFilePath.c_str(), U.size());
+
+    auto Cmd = BaseCmd + " " + CurrentFilePath;
+
+    Printf("CRASH_MIN: executing: %s\n", Cmd.c_str());
+    int ExitCode = ExecuteCommand(Cmd);
+    if (ExitCode == 0) {
+      Printf("ERROR: the input %s did not crash\n", CurrentFilePath.c_str());
+      exit(1);
+    }
+    Printf("CRASH_MIN: '%s' (%zd bytes) caused a crash. Will try to minimize "
+           "it further\n",
+           CurrentFilePath.c_str(), U.size());
+
+    std::string ArtifactPath = "minimized-from-" + Hash(U);
+    Cmd += " -minimize_crash_internal_step=1 -exact_artifact_path=" +
+        ArtifactPath;
+    Printf("CRASH_MIN: executing: %s\n", Cmd.c_str());
+    ExitCode = ExecuteCommand(Cmd);
+    if (ExitCode == 0) {
+      if (Flags.exact_artifact_path) {
+        CurrentFilePath = Flags.exact_artifact_path;
+        WriteToFile(U, CurrentFilePath);
+      }
+      Printf("CRASH_MIN: failed to minimize beyond %s (%d bytes), exiting\n",
+             CurrentFilePath.c_str(), U.size());
+      return 0;
+    }
+    CurrentFilePath = ArtifactPath;
+    Printf("\n\n\n\n\n\n*********************************\n");
+  }
+  return 0;
+}
+
+int MinimizeCrashInputInternalStep(Fuzzer *F, InputCorpus *Corpus) {
+  assert(Inputs->size() == 1);
+  std::string InputFilePath = Inputs->at(0);
+  Unit U = FileToVector(InputFilePath);
+  assert(U.size() > 2);
+  Printf("INFO: Starting MinimizeCrashInputInternalStep: %zd\n", U.size());
+  Corpus->AddToCorpus(U, 0);
+  F->SetMaxInputLen(U.size());
+  F->SetMaxMutationLen(U.size() - 1);
+  F->MinimizeCrashLoop(U);
+  Printf("INFO: Done MinimizeCrashInputInternalStep, no crashes found\n");
+  exit(0);
+  return 0;
+}
+
+int FuzzerDriver(int *argc, char ***argv, UserCallback Callback) {
+  using namespace fuzzer;
+  assert(argc && argv && "Argument pointers cannot be nullptr");
+  EF = new ExternalFunctions();
+  if (EF->LLVMFuzzerInitialize)
+    EF->LLVMFuzzerInitialize(argc, argv);
+  const std::vector<std::string> Args(*argv, *argv + *argc);
+  assert(!Args.empty());
+  ProgName = new std::string(Args[0]);
+  ParseFlags(Args);
+  if (Flags.help) {
+    PrintHelp();
+    return 0;
+  }
+
+  if (Flags.minimize_crash)
+    return MinimizeCrashInput(Args);
+
+  if (Flags.close_fd_mask & 2)
+    DupAndCloseStderr();
+  if (Flags.close_fd_mask & 1)
+    CloseStdout();
+
+  if (Flags.jobs > 0 && Flags.workers == 0) {
+    Flags.workers = std::min(NumberOfCpuCores() / 2, Flags.jobs);
+    if (Flags.workers > 1)
+      Printf("Running %u workers\n", Flags.workers);
+  }
+
+  if (Flags.workers > 0 && Flags.jobs > 0)
+    return RunInMultipleProcesses(Args, Flags.workers, Flags.jobs);
+
+  const size_t kMaxSaneLen = 1 << 20;
+  const size_t kMinDefaultLen = 64;
+  FuzzingOptions Options;
+  Options.Verbosity = Flags.verbosity;
+  Options.MaxLen = Flags.max_len;
+  Options.UnitTimeoutSec = Flags.timeout;
+  Options.ErrorExitCode = Flags.error_exitcode;
+  Options.TimeoutExitCode = Flags.timeout_exitcode;
+  Options.MaxTotalTimeSec = Flags.max_total_time;
+  Options.DoCrossOver = Flags.cross_over;
+  Options.MutateDepth = Flags.mutate_depth;
+  Options.UseCounters = Flags.use_counters;
+  Options.UseIndirCalls = Flags.use_indir_calls;
+  Options.UseMemcmp = Flags.use_memcmp;
+  Options.UseMemmem = Flags.use_memmem;
+  Options.UseCmp = Flags.use_cmp;
+  Options.UseValueProfile = Flags.use_value_profile;
+  Options.Shrink = Flags.shrink;
+  Options.ShuffleAtStartUp = Flags.shuffle;
+  Options.PreferSmall = Flags.prefer_small;
+  Options.ReloadIntervalSec = Flags.reload;
+  Options.OnlyASCII = Flags.only_ascii;
+  Options.OutputCSV = Flags.output_csv;
+  Options.DetectLeaks = Flags.detect_leaks;
+  Options.TraceMalloc = Flags.trace_malloc;
+  Options.RssLimitMb = Flags.rss_limit_mb;
+  if (Flags.runs >= 0)
+    Options.MaxNumberOfRuns = Flags.runs;
+  if (!Inputs->empty() && !Flags.minimize_crash_internal_step)
+    Options.OutputCorpus = (*Inputs)[0];
+  Options.ReportSlowUnits = Flags.report_slow_units;
+  if (Flags.artifact_prefix)
+    Options.ArtifactPrefix = Flags.artifact_prefix;
+  if (Flags.exact_artifact_path)
+    Options.ExactArtifactPath = Flags.exact_artifact_path;
+  std::vector<Unit> Dictionary;
+  if (Flags.dict)
+    if (!ParseDictionaryFile(FileToString(Flags.dict), &Dictionary))
+      return 1;
+  if (Flags.verbosity > 0 && !Dictionary.empty())
+    Printf("Dictionary: %zd entries\n", Dictionary.size());
+  bool DoPlainRun = AllInputsAreFiles();
+  Options.SaveArtifacts =
+      !DoPlainRun || Flags.minimize_crash_internal_step;
+  Options.PrintNewCovPcs = Flags.print_pcs;
+  Options.PrintFinalStats = Flags.print_final_stats;
+  Options.PrintCorpusStats = Flags.print_corpus_stats;
+  Options.PrintCoverage = Flags.print_coverage;
+  Options.DumpCoverage = Flags.dump_coverage;
+  if (Flags.exit_on_src_pos)
+    Options.ExitOnSrcPos = Flags.exit_on_src_pos;
+  if (Flags.exit_on_item)
+    Options.ExitOnItem = Flags.exit_on_item;
+
+  unsigned Seed = Flags.seed;
+  // Initialize Seed.
+  if (Seed == 0)
+    Seed = (std::chrono::system_clock::now().time_since_epoch().count() << 10) +
+           GetPid();
+  if (Flags.verbosity)
+    Printf("INFO: Seed: %u\n", Seed);
+
+  Random Rand(Seed);
+  auto *MD = new MutationDispatcher(Rand, Options);
+  auto *Corpus = new InputCorpus(Options.OutputCorpus);
+  auto *F = new Fuzzer(Callback, *Corpus, *MD, Options);
+
+  for (auto &U: Dictionary)
+    if (U.size() <= Word::GetMaxSize())
+      MD->AddWordToManualDictionary(Word(U.data(), U.size()));
+
+  StartRssThread(F, Flags.rss_limit_mb);
+
+  Options.HandleAbrt = Flags.handle_abrt;
+  Options.HandleBus = Flags.handle_bus;
+  Options.HandleFpe = Flags.handle_fpe;
+  Options.HandleIll = Flags.handle_ill;
+  Options.HandleInt = Flags.handle_int;
+  Options.HandleSegv = Flags.handle_segv;
+  Options.HandleTerm = Flags.handle_term;
+  SetSignalHandler(Options);
+
+  if (Flags.minimize_crash_internal_step)
+    return MinimizeCrashInputInternalStep(F, Corpus);
+
+  if (DoPlainRun) {
+    Options.SaveArtifacts = false;
+    int Runs = std::max(1, Flags.runs);
+    Printf("%s: Running %zd inputs %d time(s) each.\n", ProgName->c_str(),
+           Inputs->size(), Runs);
+    for (auto &Path : *Inputs) {
+      auto StartTime = system_clock::now();
+      Printf("Running: %s\n", Path.c_str());
+      for (int Iter = 0; Iter < Runs; Iter++)
+        RunOneTest(F, Path.c_str(), Options.MaxLen);
+      auto StopTime = system_clock::now();
+      auto MS = duration_cast<milliseconds>(StopTime - StartTime).count();
+      Printf("Executed %s in %zd ms\n", Path.c_str(), (long)MS);
+    }
+    Printf("***\n"
+           "*** NOTE: fuzzing was not performed, you have only\n"
+           "***       executed the target code on a fixed set of inputs.\n"
+           "***\n");
+    F->PrintFinalStats();
+    exit(0);
+  }
+
+  if (Flags.merge) {
+    if (Options.MaxLen == 0)
+      F->SetMaxInputLen(kMaxSaneLen);
+    if (TPC.UsingTracePcGuard()) {
+      if (Flags.merge_control_file)
+        F->CrashResistantMergeInternalStep(Flags.merge_control_file);
+      else
+        F->CrashResistantMerge(Args, *Inputs);
+    } else {
+      F->Merge(*Inputs);
+    }
+    exit(0);
+  }
+
+  size_t TemporaryMaxLen = Options.MaxLen ? Options.MaxLen : kMaxSaneLen;
+
+  UnitVector InitialCorpus;
+  for (auto &Inp : *Inputs) {
+    Printf("Loading corpus dir: %s\n", Inp.c_str());
+    ReadDirToVectorOfUnits(Inp.c_str(), &InitialCorpus, nullptr,
+                           TemporaryMaxLen, /*ExitOnError=*/false);
+  }
+
+  if (Options.MaxLen == 0) {
+    size_t MaxLen = 0;
+    for (auto &U : InitialCorpus)
+      MaxLen = std::max(U.size(), MaxLen);
+    F->SetMaxInputLen(std::min(std::max(kMinDefaultLen, MaxLen), kMaxSaneLen));
+  }
+
+  if (InitialCorpus.empty()) {
+    InitialCorpus.push_back(Unit({'\n'}));  // Valid ASCII input.
+    if (Options.Verbosity)
+      Printf("INFO: A corpus is not provided, starting from an empty corpus\n");
+  }
+  F->ShuffleAndMinimize(&InitialCorpus);
+  InitialCorpus.clear();  // Don't need this memory any more.
+  F->Loop();
+
+  if (Flags.verbosity)
+    Printf("Done %d runs in %zd second(s)\n", F->getTotalNumberOfRuns(),
+           F->secondsSinceProcessStartUp());
+  F->PrintFinalStats();
+
+  exit(0);  // Don't let F destroy itself.
+}
+
+// Storage for global ExternalFunctions object.
+ExternalFunctions *EF = nullptr;
+
+}  // namespace fuzzer
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctions.def b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctions.def
new file mode 100644
index 00000000..61c72e4a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctions.def
@@ -0,0 +1,50 @@
+//===- FuzzerExtFunctions.def - External functions --------------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// This defines the external function pointers that
+// ``fuzzer::ExternalFunctions`` should contain and try to initialize.  The
+// EXT_FUNC macro must be defined at the point of inclusion. The signature of
+// the macro is:
+//
+// EXT_FUNC(<name>, <return_type>, <function_signature>, <warn_if_missing>)
+//===----------------------------------------------------------------------===//
+
+// Optional user functions
+EXT_FUNC(LLVMFuzzerInitialize, int, (int *argc, char ***argv), false);
+EXT_FUNC(LLVMFuzzerCustomMutator, size_t,
+         (uint8_t * Data, size_t Size, size_t MaxSize, unsigned int Seed),
+         false);
+EXT_FUNC(LLVMFuzzerCustomCrossOver, size_t,
+         (const uint8_t * Data1, size_t Size1,
+          const uint8_t * Data2, size_t Size2,
+          uint8_t * Out, size_t MaxOutSize, unsigned int Seed),
+         false);
+
+// Sanitizer functions
+EXT_FUNC(__lsan_enable, void, (), false);
+EXT_FUNC(__lsan_disable, void, (), false);
+EXT_FUNC(__lsan_do_recoverable_leak_check, int, (), false);
+EXT_FUNC(__sanitizer_get_number_of_counters, size_t, (), false);
+EXT_FUNC(__sanitizer_install_malloc_and_free_hooks, int,
+         (void (*malloc_hook)(const volatile void *, size_t),
+          void (*free_hook)(const volatile void *)),
+         false);
+EXT_FUNC(__sanitizer_get_total_unique_caller_callee_pairs, size_t, (), false);
+EXT_FUNC(__sanitizer_get_total_unique_coverage, size_t, (), true);
+EXT_FUNC(__sanitizer_print_memory_profile, int, (size_t), false);
+EXT_FUNC(__sanitizer_print_stack_trace, void, (), true);
+EXT_FUNC(__sanitizer_symbolize_pc, void,
+         (void *, const char *fmt, char *out_buf, size_t out_buf_size), false);
+EXT_FUNC(__sanitizer_get_module_and_offset_for_pc, int,
+         (void *pc, char *module_path,
+         size_t module_path_len,void **pc_offset), false);
+EXT_FUNC(__sanitizer_reset_coverage, void, (), true);
+EXT_FUNC(__sanitizer_set_death_callback, void, (void (*)(void)), true);
+EXT_FUNC(__sanitizer_set_report_fd, void, (void*), false);
+EXT_FUNC(__sanitizer_update_counter_bitset_and_clear_counters, uintptr_t,
+  (uint8_t*), false);
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctions.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctions.h
new file mode 100644
index 00000000..2672a385
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctions.h
@@ -0,0 +1,35 @@
+//===- FuzzerExtFunctions.h - Interface to external functions ---*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Defines an interface to (possibly optional) functions.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_EXT_FUNCTIONS_H
+#define LLVM_FUZZER_EXT_FUNCTIONS_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace fuzzer {
+
+struct ExternalFunctions {
+  // Initialize function pointers. Functions that are not available will be set
+  // to nullptr.  Do not call this constructor  before ``main()`` has been
+  // entered.
+  ExternalFunctions();
+
+#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
+  RETURN_TYPE(*NAME) FUNC_SIG = nullptr
+
+#include "FuzzerExtFunctions.def"
+
+#undef EXT_FUNC
+};
+} // namespace fuzzer
+
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsDlsym.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsDlsym.cpp
new file mode 100644
index 00000000..06bddd5d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsDlsym.cpp
@@ -0,0 +1,52 @@
+//===- FuzzerExtFunctionsDlsym.cpp - Interface to external functions ------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Implementation for operating systems that support dlsym(). We only use it on
+// Apple platforms for now. We don't use this approach on Linux because it
+// requires that clients of LibFuzzer pass ``--export-dynamic`` to the linker.
+// That is a complication we don't wish to expose to clients right now.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_APPLE
+
+#include "FuzzerExtFunctions.h"
+#include "FuzzerIO.h"
+#include <dlfcn.h>
+
+using namespace fuzzer;
+
+template <typename T>
+static T GetFnPtr(const char *FnName, bool WarnIfMissing) {
+  dlerror(); // Clear any previous errors.
+  void *Fn = dlsym(RTLD_DEFAULT, FnName);
+  if (Fn == nullptr) {
+    if (WarnIfMissing) {
+      const char *ErrorMsg = dlerror();
+      Printf("WARNING: Failed to find function \"%s\".", FnName);
+      if (ErrorMsg)
+        Printf(" Reason %s.", ErrorMsg);
+      Printf("\n");
+    }
+  }
+  return reinterpret_cast<T>(Fn);
+}
+
+namespace fuzzer {
+
+ExternalFunctions::ExternalFunctions() {
+#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
+  this->NAME = GetFnPtr<decltype(ExternalFunctions::NAME)>(#NAME, WARN)
+
+#include "FuzzerExtFunctions.def"
+
+#undef EXT_FUNC
+}
+
+} // namespace fuzzer
+
+#endif // LIBFUZZER_APPLE
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsWeak.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsWeak.cpp
new file mode 100644
index 00000000..7b02b6f0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsWeak.cpp
@@ -0,0 +1,53 @@
+//===- FuzzerExtFunctionsWeak.cpp - Interface to external functions -------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Implementation for Linux. This relies on the linker's support for weak
+// symbols. We don't use this approach on Apple platforms because it requires
+// clients of LibFuzzer to pass ``-U _<symbol_name>`` to the linker to allow
+// weak symbols to be undefined. That is a complication we don't want to expose
+// to clients right now.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_LINUX
+
+#include "FuzzerExtFunctions.h"
+#include "FuzzerIO.h"
+
+extern "C" {
+// Declare these symbols as weak to allow them to be optionally defined.
+#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
+  __attribute__((weak)) RETURN_TYPE NAME FUNC_SIG
+
+#include "FuzzerExtFunctions.def"
+
+#undef EXT_FUNC
+}
+
+using namespace fuzzer;
+
+static void CheckFnPtr(void *FnPtr, const char *FnName, bool WarnIfMissing) {
+  if (FnPtr == nullptr && WarnIfMissing) {
+    Printf("WARNING: Failed to find function \"%s\".\n", FnName);
+  }
+}
+
+namespace fuzzer {
+
+ExternalFunctions::ExternalFunctions() {
+#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
+  this->NAME = ::NAME;                                                         \
+  CheckFnPtr((void *)::NAME, #NAME, WARN);
+
+#include "FuzzerExtFunctions.def"
+
+#undef EXT_FUNC
+}
+
+} // namespace fuzzer
+
+#endif // LIBFUZZER_LINUX
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsWeakAlias.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsWeakAlias.cpp
new file mode 100644
index 00000000..e10f7b4d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerExtFunctionsWeakAlias.cpp
@@ -0,0 +1,56 @@
+//===- FuzzerExtFunctionsWeakAlias.cpp - Interface to external functions --===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Implementation using weak aliases. Works for Windows.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_WINDOWS
+
+#include "FuzzerExtFunctions.h"
+#include "FuzzerIO.h"
+
+using namespace fuzzer;
+
+extern "C" {
+// Declare these symbols as weak to allow them to be optionally defined.
+#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
+  RETURN_TYPE NAME##Def FUNC_SIG {                                             \
+    Printf("ERROR: Function \"%s\" not defined.\n", #NAME);                    \
+    exit(1);                                                                   \
+  }                                                                            \
+  RETURN_TYPE NAME FUNC_SIG __attribute__((weak, alias(#NAME "Def")));
+
+#include "FuzzerExtFunctions.def"
+
+#undef EXT_FUNC
+}
+
+template <typename T>
+static T *GetFnPtr(T *Fun, T *FunDef, const char *FnName, bool WarnIfMissing) {
+  if (Fun == FunDef) {
+    if (WarnIfMissing)
+      Printf("WARNING: Failed to find function \"%s\".\n", FnName);
+    return nullptr;
+  }
+  return Fun;
+}
+
+namespace fuzzer {
+
+ExternalFunctions::ExternalFunctions() {
+#define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
+  this->NAME = GetFnPtr<decltype(::NAME)>(::NAME, ::NAME##Def, #NAME, WARN);
+
+#include "FuzzerExtFunctions.def"
+
+#undef EXT_FUNC
+}
+
+} // namespace fuzzer
+
+#endif // LIBFUZZER_WINDOWS
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerFlags.def b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerFlags.def
new file mode 100644
index 00000000..25ef1741
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerFlags.def
@@ -0,0 +1,115 @@
+//===- FuzzerFlags.def - Run-time flags -------------------------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Flags. FUZZER_FLAG_INT/FUZZER_FLAG_STRING macros should be defined at the
+// point of inclusion. We are not using any flag parsing library for better
+// portability and independence.
+//===----------------------------------------------------------------------===//
+FUZZER_FLAG_INT(verbosity, 1, "Verbosity level.")
+FUZZER_FLAG_UNSIGNED(seed, 0, "Random seed. If 0, seed is generated.")
+FUZZER_FLAG_INT(runs, -1,
+            "Number of individual test runs (-1 for infinite runs).")
+FUZZER_FLAG_INT(max_len, 0, "Maximum length of the test input. "
+    "If 0, libFuzzer tries to guess a good value based on the corpus "
+    "and reports it. ")
+FUZZER_FLAG_INT(cross_over, 1, "If 1, cross over inputs.")
+FUZZER_FLAG_INT(mutate_depth, 5,
+            "Apply this number of consecutive mutations to each input.")
+FUZZER_FLAG_INT(shuffle, 1, "Shuffle inputs at startup")
+FUZZER_FLAG_INT(prefer_small, 1,
+    "If 1, always prefer smaller inputs during the corpus shuffle.")
+FUZZER_FLAG_INT(
+    timeout, 1200,
+    "Timeout in seconds (if positive). "
+    "If one unit runs more than this number of seconds the process will abort.")
+FUZZER_FLAG_INT(error_exitcode, 77, "When libFuzzer itself reports a bug "
+  "this exit code will be used.")
+FUZZER_FLAG_INT(timeout_exitcode, 77, "When libFuzzer reports a timeout "
+  "this exit code will be used.")
+FUZZER_FLAG_INT(max_total_time, 0, "If positive, indicates the maximal total "
+                                   "time in seconds to run the fuzzer.")
+FUZZER_FLAG_INT(help, 0, "Print help.")
+FUZZER_FLAG_INT(merge, 0, "If 1, the 2-nd, 3-rd, etc corpora will be "
+  "merged into the 1-st corpus. Only interesting units will be taken. "
+  "This flag can be used to minimize a corpus.")
+FUZZER_FLAG_STRING(merge_control_file, "internal flag")
+FUZZER_FLAG_INT(minimize_crash, 0, "If 1, minimizes the provided"
+  " crash input. Use with -runs=N or -max_total_time=N to limit "
+  "the number attempts")
+FUZZER_FLAG_INT(minimize_crash_internal_step, 0, "internal flag")
+FUZZER_FLAG_INT(use_counters, 1, "Use coverage counters")
+FUZZER_FLAG_INT(use_indir_calls, 1, "Use indirect caller-callee counters")
+FUZZER_FLAG_INT(use_memcmp, 1,
+                "Use hints from intercepting memcmp, strcmp, etc")
+FUZZER_FLAG_INT(use_memmem, 1,
+                "Use hints from intercepting memmem, strstr, etc")
+FUZZER_FLAG_INT(use_value_profile, 0,
+                "Experimental. Use value profile to guide fuzzing.")
+FUZZER_FLAG_INT(use_cmp, 1, "Use CMP traces to guide mutations")
+FUZZER_FLAG_INT(shrink, 0, "Experimental. Try to shrink corpus elements.")
+FUZZER_FLAG_UNSIGNED(jobs, 0, "Number of jobs to run. If jobs >= 1 we spawn"
+                          " this number of jobs in separate worker processes"
+                          " with stdout/stderr redirected to fuzz-JOB.log.")
+FUZZER_FLAG_UNSIGNED(workers, 0,
+            "Number of simultaneous worker processes to run the jobs."
+            " If zero, \"min(jobs,NumberOfCpuCores()/2)\" is used.")
+FUZZER_FLAG_INT(reload, 1,
+                "Reload the main corpus every <N> seconds to get new units"
+                " discovered by other processes. If 0, disabled")
+FUZZER_FLAG_INT(report_slow_units, 10,
+    "Report slowest units if they run for more than this number of seconds.")
+FUZZER_FLAG_INT(only_ascii, 0,
+                "If 1, generate only ASCII (isprint+isspace) inputs.")
+FUZZER_FLAG_STRING(dict, "Experimental. Use the dictionary file.")
+FUZZER_FLAG_STRING(artifact_prefix, "Write fuzzing artifacts (crash, "
+                                    "timeout, or slow inputs) as "
+                                    "$(artifact_prefix)file")
+FUZZER_FLAG_STRING(exact_artifact_path,
+                   "Write the single artifact on failure (crash, timeout) "
+                   "as $(exact_artifact_path). This overrides -artifact_prefix "
+                   "and will not use checksum in the file name. Do not "
+                   "use the same path for several parallel processes.")
+FUZZER_FLAG_INT(output_csv, 0, "Enable pulse output in CSV format.")
+FUZZER_FLAG_INT(print_pcs, 0, "If 1, print out newly covered PCs.")
+FUZZER_FLAG_INT(print_final_stats, 0, "If 1, print statistics at exit.")
+FUZZER_FLAG_INT(print_corpus_stats, 0,
+  "If 1, print statistics on corpus elements at exit.")
+FUZZER_FLAG_INT(print_coverage, 0, "If 1, print coverage information at exit."
+                                   " Experimental, only with trace-pc-guard")
+FUZZER_FLAG_INT(dump_coverage, 0, "If 1, dump coverage information at exit."
+                                  " Experimental, only with trace-pc-guard")
+FUZZER_FLAG_INT(handle_segv, 1, "If 1, try to intercept SIGSEGV.")
+FUZZER_FLAG_INT(handle_bus, 1, "If 1, try to intercept SIGSEGV.")
+FUZZER_FLAG_INT(handle_abrt, 1, "If 1, try to intercept SIGABRT.")
+FUZZER_FLAG_INT(handle_ill, 1, "If 1, try to intercept SIGILL.")
+FUZZER_FLAG_INT(handle_fpe, 1, "If 1, try to intercept SIGFPE.")
+FUZZER_FLAG_INT(handle_int, 1, "If 1, try to intercept SIGINT.")
+FUZZER_FLAG_INT(handle_term, 1, "If 1, try to intercept SIGTERM.")
+FUZZER_FLAG_INT(close_fd_mask, 0, "If 1, close stdout at startup; "
+    "if 2, close stderr; if 3, close both. "
+    "Be careful, this will also close e.g. asan's stderr/stdout.")
+FUZZER_FLAG_INT(detect_leaks, 1, "If 1, and if LeakSanitizer is enabled "
+    "try to detect memory leaks during fuzzing (i.e. not only at shut down).")
+FUZZER_FLAG_INT(trace_malloc, 0, "If >= 1 will print all mallocs/frees. "
+    "If >= 2 will also print stack traces.")
+FUZZER_FLAG_INT(rss_limit_mb, 2048, "If non-zero, the fuzzer will exit upon"
+    "reaching this limit of RSS memory usage.")
+FUZZER_FLAG_STRING(exit_on_src_pos, "Exit if a newly found PC originates"
+    " from the given source location. Example: -exit_on_src_pos=foo.cc:123. "
+    "Used primarily for testing libFuzzer itself.")
+FUZZER_FLAG_STRING(exit_on_item, "Exit if an item with a given sha1 sum"
+    " was added to the corpus. "
+    "Used primarily for testing libFuzzer itself.")
+
+FUZZER_DEPRECATED_FLAG(exit_on_first)
+FUZZER_DEPRECATED_FLAG(save_minimized_corpus)
+FUZZER_DEPRECATED_FLAG(sync_command)
+FUZZER_DEPRECATED_FLAG(sync_timeout)
+FUZZER_DEPRECATED_FLAG(test_single_input)
+FUZZER_DEPRECATED_FLAG(drill)
+FUZZER_DEPRECATED_FLAG(truncate_units)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIO.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIO.cpp
new file mode 100644
index 00000000..eda8e877
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIO.cpp
@@ -0,0 +1,117 @@
+//===- FuzzerIO.cpp - IO utils. -------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// IO functions.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerIO.h"
+#include "FuzzerDefs.h"
+#include "FuzzerExtFunctions.h"
+#include <algorithm>
+#include <cstdarg>
+#include <fstream>
+#include <iterator>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+namespace fuzzer {
+
+static FILE *OutputFile = stderr;
+
+long GetEpoch(const std::string &Path) {
+  struct stat St;
+  if (stat(Path.c_str(), &St))
+    return 0;  // Can't stat, be conservative.
+  return St.st_mtime;
+}
+
+Unit FileToVector(const std::string &Path, size_t MaxSize, bool ExitOnError) {
+  std::ifstream T(Path);
+  if (ExitOnError && !T) {
+    Printf("No such directory: %s; exiting\n", Path.c_str());
+    exit(1);
+  }
+
+  T.seekg(0, T.end);
+  size_t FileLen = T.tellg();
+  if (MaxSize)
+    FileLen = std::min(FileLen, MaxSize);
+
+  T.seekg(0, T.beg);
+  Unit Res(FileLen);
+  T.read(reinterpret_cast<char *>(Res.data()), FileLen);
+  return Res;
+}
+
+std::string FileToString(const std::string &Path) {
+  std::ifstream T(Path);
+  return std::string((std::istreambuf_iterator<char>(T)),
+                     std::istreambuf_iterator<char>());
+}
+
+void CopyFileToErr(const std::string &Path) {
+  Printf("%s", FileToString(Path).c_str());
+}
+
+void WriteToFile(const Unit &U, const std::string &Path) {
+  // Use raw C interface because this function may be called from a sig handler.
+  FILE *Out = fopen(Path.c_str(), "w");
+  if (!Out) return;
+  fwrite(U.data(), sizeof(U[0]), U.size(), Out);
+  fclose(Out);
+}
+
+void ReadDirToVectorOfUnits(const char *Path, std::vector<Unit> *V,
+                            long *Epoch, size_t MaxSize, bool ExitOnError) {
+  long E = Epoch ? *Epoch : 0;
+  std::vector<std::string> Files;
+  ListFilesInDirRecursive(Path, Epoch, &Files, /*TopDir*/true);
+  size_t NumLoaded = 0;
+  for (size_t i = 0; i < Files.size(); i++) {
+    auto &X = Files[i];
+    if (Epoch && GetEpoch(X) < E) continue;
+    NumLoaded++;
+    if ((NumLoaded & (NumLoaded - 1)) == 0 && NumLoaded >= 1024)
+      Printf("Loaded %zd/%zd files from %s\n", NumLoaded, Files.size(), Path);
+    auto S = FileToVector(X, MaxSize, ExitOnError);
+    if (!S.empty())
+      V->push_back(S);
+  }
+}
+
+std::string DirPlusFile(const std::string &DirPath,
+                        const std::string &FileName) {
+  return DirPath + GetSeparator() + FileName;
+}
+
+void DupAndCloseStderr() {
+  int OutputFd = DuplicateFile(2);
+  if (OutputFd > 0) {
+    FILE *NewOutputFile = OpenFile(OutputFd, "w");
+    if (NewOutputFile) {
+      OutputFile = NewOutputFile;
+      if (EF->__sanitizer_set_report_fd)
+        EF->__sanitizer_set_report_fd(reinterpret_cast<void *>(OutputFd));
+      CloseFile(2);
+    }
+  }
+}
+
+void CloseStdout() {
+  CloseFile(1);
+}
+
+void Printf(const char *Fmt, ...) {
+  va_list ap;
+  va_start(ap, Fmt);
+  vfprintf(OutputFile, Fmt, ap);
+  va_end(ap);
+  fflush(OutputFile);
+}
+
+}  // namespace fuzzer
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIO.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIO.h
new file mode 100644
index 00000000..741fecf4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIO.h
@@ -0,0 +1,64 @@
+//===- FuzzerIO.h - Internal header for IO utils ----------------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// IO interface.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_IO_H
+#define LLVM_FUZZER_IO_H
+
+#include "FuzzerDefs.h"
+
+namespace fuzzer {
+
+long GetEpoch(const std::string &Path);
+
+Unit FileToVector(const std::string &Path, size_t MaxSize = 0,
+                  bool ExitOnError = true);
+
+std::string FileToString(const std::string &Path);
+
+void CopyFileToErr(const std::string &Path);
+
+void WriteToFile(const Unit &U, const std::string &Path);
+
+void ReadDirToVectorOfUnits(const char *Path, std::vector<Unit> *V,
+                            long *Epoch, size_t MaxSize, bool ExitOnError);
+
+// Returns "Dir/FileName" or equivalent for the current OS.
+std::string DirPlusFile(const std::string &DirPath,
+                        const std::string &FileName);
+
+// Returns the name of the dir, similar to the 'dirname' utility.
+std::string DirName(const std::string &FileName);
+
+void DupAndCloseStderr();
+
+void CloseStdout();
+
+void Printf(const char *Fmt, ...);
+
+// Platform specific functions:
+bool IsFile(const std::string &Path);
+
+void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
+                             std::vector<std::string> *V, bool TopDir);
+
+char GetSeparator();
+
+FILE* OpenFile(int Fd, const char *Mode);
+
+int CloseFile(int Fd);
+
+int DuplicateFile(int Fd);
+
+void RemoveFile(const std::string &Path);
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_IO_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIOPosix.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIOPosix.cpp
new file mode 100644
index 00000000..720bc130
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIOPosix.cpp
@@ -0,0 +1,88 @@
+//===- FuzzerIOPosix.cpp - IO utils for Posix. ----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// IO functions implementation using Posix API.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_POSIX
+
+#include "FuzzerExtFunctions.h"
+#include "FuzzerIO.h"
+#include <cstdarg>
+#include <cstdio>
+#include <dirent.h>
+#include <fstream>
+#include <iterator>
+#include <libgen.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+namespace fuzzer {
+
+bool IsFile(const std::string &Path) {
+  struct stat St;
+  if (stat(Path.c_str(), &St))
+    return false;
+  return S_ISREG(St.st_mode);
+}
+
+void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
+                             std::vector<std::string> *V, bool TopDir) {
+  auto E = GetEpoch(Dir);
+  if (Epoch)
+    if (E && *Epoch >= E) return;
+
+  DIR *D = opendir(Dir.c_str());
+  if (!D) {
+    Printf("No such directory: %s; exiting\n", Dir.c_str());
+    exit(1);
+  }
+  while (auto E = readdir(D)) {
+    std::string Path = DirPlusFile(Dir, E->d_name);
+    if (E->d_type == DT_REG || E->d_type == DT_LNK)
+      V->push_back(Path);
+    else if (E->d_type == DT_DIR && *E->d_name != '.')
+      ListFilesInDirRecursive(Path, Epoch, V, false);
+  }
+  closedir(D);
+  if (Epoch && TopDir)
+    *Epoch = E;
+}
+
+char GetSeparator() {
+  return '/';
+}
+
+FILE* OpenFile(int Fd, const char* Mode) {
+  return fdopen(Fd, Mode);
+}
+
+int CloseFile(int fd) {
+  return close(fd);
+}
+
+int DuplicateFile(int Fd) {
+  return dup(Fd);
+}
+
+void RemoveFile(const std::string &Path) {
+  unlink(Path.c_str());
+}
+
+std::string DirName(const std::string &FileName) {
+  char *Tmp = new char[FileName.size() + 1];
+  memcpy(Tmp, FileName.c_str(), FileName.size() + 1);
+  std::string Res = dirname(Tmp);
+  delete [] Tmp;
+  return Res;
+}
+
+}  // namespace fuzzer
+
+#endif // LIBFUZZER_POSIX
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIOWindows.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIOWindows.cpp
new file mode 100644
index 00000000..a4738eb9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerIOWindows.cpp
@@ -0,0 +1,282 @@
+//===- FuzzerIOWindows.cpp - IO utils for Windows. ------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// IO functions implementation for Windows.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_WINDOWS
+
+#include "FuzzerExtFunctions.h"
+#include "FuzzerIO.h"
+#include <cstdarg>
+#include <cstdio>
+#include <fstream>
+#include <io.h>
+#include <iterator>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <windows.h>
+
+namespace fuzzer {
+
+static bool IsFile(const std::string &Path, const DWORD &FileAttributes) {
+
+  if (FileAttributes & FILE_ATTRIBUTE_NORMAL)
+    return true;
+
+  if (FileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+    return false;
+
+  HANDLE FileHandle(
+      CreateFileA(Path.c_str(), 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
+                  FILE_FLAG_BACKUP_SEMANTICS, 0));
+
+  if (FileHandle == INVALID_HANDLE_VALUE) {
+    Printf("CreateFileA() failed for \"%s\" (Error code: %lu).\n", Path.c_str(),
+        GetLastError());
+    return false;
+  }
+
+  DWORD FileType = GetFileType(FileHandle);
+
+  if (FileType == FILE_TYPE_UNKNOWN) {
+    Printf("GetFileType() failed for \"%s\" (Error code: %lu).\n", Path.c_str(),
+        GetLastError());
+    CloseHandle(FileHandle);
+    return false;
+  }
+
+  if (FileType != FILE_TYPE_DISK) {
+    CloseHandle(FileHandle);
+    return false;
+  }
+
+  CloseHandle(FileHandle);
+  return true;
+}
+
+bool IsFile(const std::string &Path) {
+  DWORD Att = GetFileAttributesA(Path.c_str());
+
+  if (Att == INVALID_FILE_ATTRIBUTES) {
+    Printf("GetFileAttributesA() failed for \"%s\" (Error code: %lu).\n",
+        Path.c_str(), GetLastError());
+    return false;
+  }
+
+  return IsFile(Path, Att);
+}
+
+void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
+                             std::vector<std::string> *V, bool TopDir) {
+  auto E = GetEpoch(Dir);
+  if (Epoch)
+    if (E && *Epoch >= E) return;
+
+  std::string Path(Dir);
+  assert(!Path.empty());
+  if (Path.back() != '\\')
+      Path.push_back('\\');
+  Path.push_back('*');
+
+  // Get the first directory entry.
+  WIN32_FIND_DATAA FindInfo;
+  HANDLE FindHandle(FindFirstFileA(Path.c_str(), &FindInfo));
+  if (FindHandle == INVALID_HANDLE_VALUE)
+  {
+    Printf("No file found in: %s.\n", Dir.c_str());
+    return;
+  }
+
+  do {
+    std::string FileName = DirPlusFile(Dir, FindInfo.cFileName);
+
+    if (FindInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+      size_t FilenameLen = strlen(FindInfo.cFileName);
+      if ((FilenameLen == 1 && FindInfo.cFileName[0] == '.') ||
+          (FilenameLen == 2 && FindInfo.cFileName[0] == '.' &&
+                               FindInfo.cFileName[1] == '.'))
+        continue;
+
+      ListFilesInDirRecursive(FileName, Epoch, V, false);
+    }
+    else if (IsFile(FileName, FindInfo.dwFileAttributes))
+      V->push_back(FileName);
+  } while (FindNextFileA(FindHandle, &FindInfo));
+
+  DWORD LastError = GetLastError();
+  if (LastError != ERROR_NO_MORE_FILES)
+    Printf("FindNextFileA failed (Error code: %lu).\n", LastError);
+
+  FindClose(FindHandle);
+
+  if (Epoch && TopDir)
+    *Epoch = E;
+}
+
+char GetSeparator() {
+  return '\\';
+}
+
+FILE* OpenFile(int Fd, const char* Mode) {
+  return _fdopen(Fd, Mode);
+}
+
+int CloseFile(int Fd) {
+  return _close(Fd);
+}
+
+int DuplicateFile(int Fd) {
+  return _dup(Fd);
+}
+
+void RemoveFile(const std::string &Path) {
+  _unlink(Path.c_str());
+}
+
+static bool IsSeparator(char C) {
+  return C == '\\' || C == '/';
+}
+
+// Parse disk designators, like "C:\". If Relative == true, also accepts: "C:".
+// Returns number of characters considered if successful.
+static size_t ParseDrive(const std::string &FileName, const size_t Offset,
+                         bool Relative = true) {
+  if (Offset + 1 >= FileName.size() || FileName[Offset + 1] != ':')
+    return 0;
+  if (Offset + 2 >= FileName.size() || !IsSeparator(FileName[Offset + 2])) {
+    if (!Relative) // Accept relative path?
+      return 0;
+    else
+      return 2;
+  }
+  return 3;
+}
+
+// Parse a file name, like: SomeFile.txt
+// Returns number of characters considered if successful.
+static size_t ParseFileName(const std::string &FileName, const size_t Offset) {
+  size_t Pos = Offset;
+  const size_t End = FileName.size();
+  for(; Pos < End && !IsSeparator(FileName[Pos]); ++Pos)
+    ;
+  return Pos - Offset;
+}
+
+// Parse a directory ending in separator, like: SomeDir\
+// Returns number of characters considered if successful.
+static size_t ParseDir(const std::string &FileName, const size_t Offset) {
+  size_t Pos = Offset;
+  const size_t End = FileName.size();
+  if (Pos >= End || IsSeparator(FileName[Pos]))
+    return 0;
+  for(; Pos < End && !IsSeparator(FileName[Pos]); ++Pos)
+    ;
+  if (Pos >= End)
+    return 0;
+  ++Pos; // Include separator.
+  return Pos - Offset;
+}
+
+// Parse a servername and share, like: SomeServer\SomeShare\
+// Returns number of characters considered if successful.
+static size_t ParseServerAndShare(const std::string &FileName,
+                                  const size_t Offset) {
+  size_t Pos = Offset, Res;
+  if (!(Res = ParseDir(FileName, Pos)))
+    return 0;
+  Pos += Res;
+  if (!(Res = ParseDir(FileName, Pos)))
+    return 0;
+  Pos += Res;
+  return Pos - Offset;
+}
+
+// Parse the given Ref string from the position Offset, to exactly match the given
+// string Patt.
+// Returns number of characters considered if successful.
+static size_t ParseCustomString(const std::string &Ref, size_t Offset,
+                                const char *Patt) {
+  size_t Len = strlen(Patt);
+  if (Offset + Len > Ref.size())
+    return 0;
+  return Ref.compare(Offset, Len, Patt) == 0 ? Len : 0;
+}
+
+// Parse a location, like:
+// \\?\UNC\Server\Share\  \\?\C:\  \\Server\Share\  \  C:\  C:
+// Returns number of characters considered if successful.
+static size_t ParseLocation(const std::string &FileName) {
+  size_t Pos = 0, Res;
+
+  if ((Res = ParseCustomString(FileName, Pos, R"(\\?\)"))) {
+    Pos += Res;
+    if ((Res = ParseCustomString(FileName, Pos, R"(UNC\)"))) {
+      Pos += Res;
+      if ((Res = ParseServerAndShare(FileName, Pos)))
+        return Pos + Res;
+      return 0;
+    }
+    if ((Res = ParseDrive(FileName, Pos, false)))
+      return Pos + Res;
+    return 0;
+  }
+
+  if (Pos < FileName.size() && IsSeparator(FileName[Pos])) {
+    ++Pos;
+    if (Pos < FileName.size() && IsSeparator(FileName[Pos])) {
+      ++Pos;
+      if ((Res = ParseServerAndShare(FileName, Pos)))
+        return Pos + Res;
+      return 0;
+    }
+    return Pos;
+  }
+
+  if ((Res = ParseDrive(FileName, Pos)))
+    return Pos + Res;
+
+  return Pos;
+}
+
+std::string DirName(const std::string &FileName) {
+  size_t LocationLen = ParseLocation(FileName);
+  size_t DirLen = 0, Res;
+  while ((Res = ParseDir(FileName, LocationLen + DirLen)))
+    DirLen += Res;
+  size_t FileLen = ParseFileName(FileName, LocationLen + DirLen);
+
+  if (LocationLen + DirLen + FileLen != FileName.size()) {
+    Printf("DirName() failed for \"%s\", invalid path.\n", FileName.c_str());
+    exit(1);
+  }
+
+  if (DirLen) {
+    --DirLen; // Remove trailing separator.
+    if (!FileLen) { // Path ended in separator.
+      assert(DirLen);
+      // Remove file name from Dir.
+      while (DirLen && !IsSeparator(FileName[LocationLen + DirLen - 1]))
+        --DirLen;
+      if (DirLen) // Remove trailing separator.
+        --DirLen;
+    }
+  }
+
+  if (!LocationLen) { // Relative path.
+    if (!DirLen)
+      return ".";
+    return std::string(".\\").append(FileName, 0, DirLen);
+  }
+
+  return FileName.substr(0, LocationLen + DirLen);
+}
+
+}  // namespace fuzzer
+
+#endif // LIBFUZZER_WINDOWS
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerInterface.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerInterface.h
new file mode 100644
index 00000000..d47e20e3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerInterface.h
@@ -0,0 +1,67 @@
+//===- FuzzerInterface.h - Interface header for the Fuzzer ------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Define the interface between libFuzzer and the library being tested.
+//===----------------------------------------------------------------------===//
+
+// NOTE: the libFuzzer interface is thin and in the majority of cases
+// you should not include this file into your target. In 95% of cases
+// all you need is to define the following function in your file:
+// extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
+
+// WARNING: keep the interface in C.
+
+#ifndef LLVM_FUZZER_INTERFACE_H
+#define LLVM_FUZZER_INTERFACE_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+// Mandatory user-provided target function.
+// Executes the code under test with [Data, Data+Size) as the input.
+// libFuzzer will invoke this function *many* times with different inputs.
+// Must return 0.
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
+
+// Optional user-provided initialization function.
+// If provided, this function will be called by libFuzzer once at startup.
+// It may read and modify argc/argv.
+// Must return 0.
+int LLVMFuzzerInitialize(int *argc, char ***argv);
+
+// Optional user-provided custom mutator.
+// Mutates raw data in [Data, Data+Size) inplace.
+// Returns the new size, which is not greater than MaxSize.
+// Given the same Seed produces the same mutation.
+size_t LLVMFuzzerCustomMutator(uint8_t *Data, size_t Size, size_t MaxSize,
+                               unsigned int Seed);
+
+// Optional user-provided custom cross-over function.
+// Combines pieces of Data1 & Data2 together into Out.
+// Returns the new size, which is not greater than MaxOutSize.
+// Should produce the same mutation given the same Seed.
+size_t LLVMFuzzerCustomCrossOver(const uint8_t *Data1, size_t Size1,
+                                 const uint8_t *Data2, size_t Size2,
+                                 uint8_t *Out, size_t MaxOutSize,
+                                 unsigned int Seed);
+
+// Experimental, may go away in future.
+// libFuzzer-provided function to be used inside LLVMFuzzerTestOneInput.
+// Mutates raw data in [Data, Data+Size) inplace.
+// Returns the new size, which is not greater than MaxSize.
+size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  // LLVM_FUZZER_INTERFACE_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerInternal.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerInternal.h
new file mode 100644
index 00000000..c0417060
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerInternal.h
@@ -0,0 +1,182 @@
+//===- FuzzerInternal.h - Internal header for the Fuzzer --------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Define the main class fuzzer::Fuzzer and most functions.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_INTERNAL_H
+#define LLVM_FUZZER_INTERNAL_H
+
+#include "FuzzerDefs.h"
+#include "FuzzerExtFunctions.h"
+#include "FuzzerInterface.h"
+#include "FuzzerOptions.h"
+#include "FuzzerSHA1.h"
+#include "FuzzerValueBitMap.h"
+#include <algorithm>
+#include <atomic>
+#include <chrono>
+#include <climits>
+#include <cstdlib>
+#include <string.h>
+
+namespace fuzzer {
+
+using namespace std::chrono;
+
+class Fuzzer {
+public:
+
+  // Aggregates all available coverage measurements.
+  struct Coverage {
+    Coverage() { Reset(); }
+
+    void Reset() {
+      BlockCoverage = 0;
+      CallerCalleeCoverage = 0;
+      CounterBitmapBits = 0;
+      CounterBitmap.clear();
+      VPMap.Reset();
+    }
+
+    size_t BlockCoverage;
+    size_t CallerCalleeCoverage;
+    // Precalculated number of bits in CounterBitmap.
+    size_t CounterBitmapBits;
+    std::vector<uint8_t> CounterBitmap;
+    ValueBitMap VPMap;
+  };
+
+  Fuzzer(UserCallback CB, InputCorpus &Corpus, MutationDispatcher &MD,
+         FuzzingOptions Options);
+  ~Fuzzer();
+  void Loop();
+  void MinimizeCrashLoop(const Unit &U);
+  void ShuffleAndMinimize(UnitVector *V);
+  void InitializeTraceState();
+  void RereadOutputCorpus(size_t MaxSize);
+
+  size_t secondsSinceProcessStartUp() {
+    return duration_cast<seconds>(system_clock::now() - ProcessStartTime)
+        .count();
+  }
+
+  bool TimedOut() {
+    return Options.MaxTotalTimeSec > 0 &&
+           secondsSinceProcessStartUp() >
+               static_cast<size_t>(Options.MaxTotalTimeSec);
+  }
+
+  size_t execPerSec() {
+    size_t Seconds = secondsSinceProcessStartUp();
+    return Seconds ? TotalNumberOfRuns / Seconds : 0;
+  }
+
+  size_t getTotalNumberOfRuns() { return TotalNumberOfRuns; }
+
+  static void StaticAlarmCallback();
+  static void StaticCrashSignalCallback();
+  static void StaticInterruptCallback();
+
+  void ExecuteCallback(const uint8_t *Data, size_t Size);
+  size_t RunOne(const uint8_t *Data, size_t Size);
+
+  // Merge Corpora[1:] into Corpora[0].
+  void Merge(const std::vector<std::string> &Corpora);
+  void CrashResistantMerge(const std::vector<std::string> &Args,
+                           const std::vector<std::string> &Corpora);
+  void CrashResistantMergeInternalStep(const std::string &ControlFilePath);
+  // Returns a subset of 'Extra' that adds coverage to 'Initial'.
+  UnitVector FindExtraUnits(const UnitVector &Initial, const UnitVector &Extra);
+  MutationDispatcher &GetMD() { return MD; }
+  void PrintFinalStats();
+  void SetMaxInputLen(size_t MaxInputLen);
+  void SetMaxMutationLen(size_t MaxMutationLen);
+  void RssLimitCallback();
+
+  // Public for tests.
+  void ResetCoverage();
+
+  bool InFuzzingThread() const { return IsMyThread; }
+  size_t GetCurrentUnitInFuzzingThead(const uint8_t **Data) const;
+  void TryDetectingAMemoryLeak(const uint8_t *Data, size_t Size,
+                               bool DuringInitialCorpusExecution);
+
+  void HandleMalloc(size_t Size);
+
+private:
+  void AlarmCallback();
+  void CrashCallback();
+  void InterruptCallback();
+  void MutateAndTestOne();
+  void ReportNewCoverage(InputInfo *II, const Unit &U);
+  size_t RunOne(const Unit &U) { return RunOne(U.data(), U.size()); }
+  void WriteToOutputCorpus(const Unit &U);
+  void WriteUnitToFileWithPrefix(const Unit &U, const char *Prefix);
+  void PrintStats(const char *Where, const char *End = "\n", size_t Units = 0);
+  void PrintStatusForNewUnit(const Unit &U);
+  void ShuffleCorpus(UnitVector *V);
+  void AddToCorpus(const Unit &U);
+  void CheckExitOnSrcPosOrItem();
+
+  // Trace-based fuzzing: we run a unit with some kind of tracing
+  // enabled and record potentially useful mutations. Then
+  // We apply these mutations one by one to the unit and run it again.
+
+  // Start tracing; forget all previously proposed mutations.
+  void StartTraceRecording();
+  // Stop tracing.
+  void StopTraceRecording();
+
+  void SetDeathCallback();
+  static void StaticDeathCallback();
+  void DumpCurrentUnit(const char *Prefix);
+  void DeathCallback();
+
+  void ResetEdgeCoverage();
+  void ResetCounters();
+  void PrepareCounters(Fuzzer::Coverage *C);
+  bool RecordMaxCoverage(Fuzzer::Coverage *C);
+
+  void AllocateCurrentUnitData();
+  uint8_t *CurrentUnitData = nullptr;
+  std::atomic<size_t> CurrentUnitSize;
+  uint8_t BaseSha1[kSHA1NumBytes];  // Checksum of the base unit.
+  bool RunningCB = false;
+
+  size_t TotalNumberOfRuns = 0;
+  size_t NumberOfNewUnitsAdded = 0;
+
+  bool HasMoreMallocsThanFrees = false;
+  size_t NumberOfLeakDetectionAttempts = 0;
+
+  UserCallback CB;
+  InputCorpus &Corpus;
+  MutationDispatcher &MD;
+  FuzzingOptions Options;
+
+  system_clock::time_point ProcessStartTime = system_clock::now();
+  system_clock::time_point UnitStartTime, UnitStopTime;
+  long TimeOfLongestUnitInSeconds = 0;
+  long EpochOfLastReadOfOutputCorpus = 0;
+
+  // Maximum recorded coverage.
+  Coverage MaxCoverage;
+
+  size_t MaxInputLen = 0;
+  size_t MaxMutationLen = 0;
+
+  // Need to know our own thread.
+  static thread_local bool IsMyThread;
+
+  bool InMergeMode = false;
+};
+
+}; // namespace fuzzer
+
+#endif // LLVM_FUZZER_INTERNAL_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerLoop.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerLoop.cpp
new file mode 100644
index 00000000..73e058ff
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerLoop.cpp
@@ -0,0 +1,792 @@
+//===- FuzzerLoop.cpp - Fuzzer's main loop --------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Fuzzer's main loop.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerCorpus.h"
+#include "FuzzerInternal.h"
+#include "FuzzerIO.h"
+#include "FuzzerMutate.h"
+#include "FuzzerRandom.h"
+#include "FuzzerTracePC.h"
+#include <algorithm>
+#include <cstring>
+#include <memory>
+#include <set>
+
+#if defined(__has_include)
+#if __has_include(<sanitizer / coverage_interface.h>)
+#include <sanitizer/coverage_interface.h>
+#endif
+#if __has_include(<sanitizer / lsan_interface.h>)
+#include <sanitizer/lsan_interface.h>
+#endif
+#endif
+
+#define NO_SANITIZE_MEMORY
+#if defined(__has_feature)
+#if __has_feature(memory_sanitizer)
+#undef NO_SANITIZE_MEMORY
+#define NO_SANITIZE_MEMORY __attribute__((no_sanitize_memory))
+#endif
+#endif
+
+namespace fuzzer {
+static const size_t kMaxUnitSizeToPrint = 256;
+
+thread_local bool Fuzzer::IsMyThread;
+
+static void MissingExternalApiFunction(const char *FnName) {
+  Printf("ERROR: %s is not defined. Exiting.\n"
+         "Did you use -fsanitize-coverage=... to build your code?\n",
+         FnName);
+  exit(1);
+}
+
+#define CHECK_EXTERNAL_FUNCTION(fn)                                            \
+  do {                                                                         \
+    if (!(EF->fn))                                                             \
+      MissingExternalApiFunction(#fn);                                         \
+  } while (false)
+
+// Only one Fuzzer per process.
+static Fuzzer *F;
+
+void Fuzzer::ResetEdgeCoverage() {
+  CHECK_EXTERNAL_FUNCTION(__sanitizer_reset_coverage);
+  EF->__sanitizer_reset_coverage();
+}
+
+void Fuzzer::ResetCounters() {
+  if (Options.UseCounters)
+    EF->__sanitizer_update_counter_bitset_and_clear_counters(0);
+}
+
+void Fuzzer::PrepareCounters(Fuzzer::Coverage *C) {
+  if (Options.UseCounters) {
+    size_t NumCounters = EF->__sanitizer_get_number_of_counters();
+    C->CounterBitmap.resize(NumCounters);
+  }
+}
+
+// Records data to a maximum coverage tracker. Returns true if additional
+// coverage was discovered.
+bool Fuzzer::RecordMaxCoverage(Fuzzer::Coverage *C) {
+  bool Res = false;
+
+  uint64_t NewBlockCoverage = EF->__sanitizer_get_total_unique_coverage();
+  if (NewBlockCoverage > C->BlockCoverage) {
+    Res = true;
+    C->BlockCoverage = NewBlockCoverage;
+  }
+
+  if (Options.UseIndirCalls &&
+      EF->__sanitizer_get_total_unique_caller_callee_pairs) {
+    uint64_t NewCallerCalleeCoverage =
+        EF->__sanitizer_get_total_unique_caller_callee_pairs();
+    if (NewCallerCalleeCoverage > C->CallerCalleeCoverage) {
+      Res = true;
+      C->CallerCalleeCoverage = NewCallerCalleeCoverage;
+    }
+  }
+
+  if (Options.UseCounters) {
+    uint64_t CounterDelta =
+        EF->__sanitizer_update_counter_bitset_and_clear_counters(
+            C->CounterBitmap.data());
+    if (CounterDelta > 0) {
+      Res = true;
+      C->CounterBitmapBits += CounterDelta;
+    }
+  }
+
+  return Res;
+}
+
+// Leak detection is expensive, so we first check if there were more mallocs
+// than frees (using the sanitizer malloc hooks) and only then try to call lsan.
+struct MallocFreeTracer {
+  void Start(int TraceLevel) {
+    this->TraceLevel = TraceLevel;
+    if (TraceLevel)
+      Printf("MallocFreeTracer: START\n");
+    Mallocs = 0;
+    Frees = 0;
+  }
+  // Returns true if there were more mallocs than frees.
+  bool Stop() {
+    if (TraceLevel)
+      Printf("MallocFreeTracer: STOP %zd %zd (%s)\n", Mallocs.load(),
+             Frees.load(), Mallocs == Frees ? "same" : "DIFFERENT");
+    bool Result = Mallocs > Frees;
+    Mallocs = 0;
+    Frees = 0;
+    TraceLevel = 0;
+    return Result;
+  }
+  std::atomic<size_t> Mallocs;
+  std::atomic<size_t> Frees;
+  int TraceLevel = 0;
+};
+
+static MallocFreeTracer AllocTracer;
+
+ATTRIBUTE_NO_SANITIZE_MEMORY
+void MallocHook(const volatile void *ptr, size_t size) {
+  size_t N = AllocTracer.Mallocs++;
+  F->HandleMalloc(size);
+  if (int TraceLevel = AllocTracer.TraceLevel) {
+    Printf("MALLOC[%zd] %p %zd\n", N, ptr, size);
+    if (TraceLevel >= 2 && EF)
+      EF->__sanitizer_print_stack_trace();
+  }
+}
+
+ATTRIBUTE_NO_SANITIZE_MEMORY
+void FreeHook(const volatile void *ptr) {
+  size_t N = AllocTracer.Frees++;
+  if (int TraceLevel = AllocTracer.TraceLevel) {
+    Printf("FREE[%zd]   %p\n", N, ptr);
+    if (TraceLevel >= 2 && EF)
+      EF->__sanitizer_print_stack_trace();
+  }
+}
+
+// Crash on a single malloc that exceeds the rss limit.
+void Fuzzer::HandleMalloc(size_t Size) {
+  if (!Options.RssLimitMb || (Size >> 20) < (size_t)Options.RssLimitMb)
+    return;
+  Printf("==%d== ERROR: libFuzzer: out-of-memory (malloc(%zd))\n", GetPid(),
+         Size);
+  Printf("   To change the out-of-memory limit use -rss_limit_mb=<N>\n\n");
+  if (EF->__sanitizer_print_stack_trace)
+    EF->__sanitizer_print_stack_trace();
+  DumpCurrentUnit("oom-");
+  Printf("SUMMARY: libFuzzer: out-of-memory\n");
+  PrintFinalStats();
+  _Exit(Options.ErrorExitCode); // Stop right now.
+}
+
+Fuzzer::Fuzzer(UserCallback CB, InputCorpus &Corpus, MutationDispatcher &MD,
+               FuzzingOptions Options)
+    : CB(CB), Corpus(Corpus), MD(MD), Options(Options) {
+  SetDeathCallback();
+  InitializeTraceState();
+  assert(!F);
+  F = this;
+  TPC.ResetMaps();
+  ResetCoverage();
+  IsMyThread = true;
+  if (Options.DetectLeaks && EF->__sanitizer_install_malloc_and_free_hooks)
+    EF->__sanitizer_install_malloc_and_free_hooks(MallocHook, FreeHook);
+  TPC.SetUseCounters(Options.UseCounters);
+  TPC.SetUseValueProfile(Options.UseValueProfile);
+  TPC.SetPrintNewPCs(Options.PrintNewCovPcs);
+
+  if (Options.Verbosity)
+    TPC.PrintModuleInfo();
+  if (!Options.OutputCorpus.empty() && Options.ReloadIntervalSec)
+    EpochOfLastReadOfOutputCorpus = GetEpoch(Options.OutputCorpus);
+  MaxInputLen = MaxMutationLen = Options.MaxLen;
+  AllocateCurrentUnitData();
+  CurrentUnitSize = 0;
+  memset(BaseSha1, 0, sizeof(BaseSha1));
+}
+
+Fuzzer::~Fuzzer() { }
+
+void Fuzzer::AllocateCurrentUnitData() {
+  if (CurrentUnitData || MaxInputLen == 0) return;
+  CurrentUnitData = new uint8_t[MaxInputLen];
+}
+
+void Fuzzer::SetDeathCallback() {
+  CHECK_EXTERNAL_FUNCTION(__sanitizer_set_death_callback);
+  EF->__sanitizer_set_death_callback(StaticDeathCallback);
+}
+
+void Fuzzer::StaticDeathCallback() {
+  assert(F);
+  F->DeathCallback();
+}
+
+static void WarnOnUnsuccessfullMerge(bool DoWarn) {
+  if (!DoWarn) return;
+  Printf(
+   "***\n"
+   "***\n"
+   "***\n"
+   "*** NOTE: merge did not succeed due to a failure on one of the inputs.\n"
+   "*** You will need to filter out crashes from the corpus, e.g. like this:\n"
+   "***   for f in WITH_CRASHES/*; do ./fuzzer $f && cp $f NO_CRASHES; done\n"
+   "*** Future versions may have crash-resistant merge, stay tuned.\n"
+   "***\n"
+   "***\n"
+   "***\n");
+}
+
+void Fuzzer::DumpCurrentUnit(const char *Prefix) {
+  WarnOnUnsuccessfullMerge(InMergeMode);
+  if (!CurrentUnitData) return;  // Happens when running individual inputs.
+  MD.PrintMutationSequence();
+  Printf("; base unit: %s\n", Sha1ToString(BaseSha1).c_str());
+  size_t UnitSize = CurrentUnitSize;
+  if (UnitSize <= kMaxUnitSizeToPrint) {
+    PrintHexArray(CurrentUnitData, UnitSize, "\n");
+    PrintASCII(CurrentUnitData, UnitSize, "\n");
+  }
+  WriteUnitToFileWithPrefix({CurrentUnitData, CurrentUnitData + UnitSize},
+                            Prefix);
+}
+
+NO_SANITIZE_MEMORY
+void Fuzzer::DeathCallback() {
+  DumpCurrentUnit("crash-");
+  PrintFinalStats();
+}
+
+void Fuzzer::StaticAlarmCallback() {
+  assert(F);
+  F->AlarmCallback();
+}
+
+void Fuzzer::StaticCrashSignalCallback() {
+  assert(F);
+  F->CrashCallback();
+}
+
+void Fuzzer::StaticInterruptCallback() {
+  assert(F);
+  F->InterruptCallback();
+}
+
+void Fuzzer::CrashCallback() {
+  Printf("==%lu== ERROR: libFuzzer: deadly signal\n", GetPid());
+  if (EF->__sanitizer_print_stack_trace)
+    EF->__sanitizer_print_stack_trace();
+  Printf("NOTE: libFuzzer has rudimentary signal handlers.\n"
+         "      Combine libFuzzer with AddressSanitizer or similar for better "
+         "crash reports.\n");
+  Printf("SUMMARY: libFuzzer: deadly signal\n");
+  DumpCurrentUnit("crash-");
+  PrintFinalStats();
+  exit(Options.ErrorExitCode);
+}
+
+void Fuzzer::InterruptCallback() {
+  Printf("==%lu== libFuzzer: run interrupted; exiting\n", GetPid());
+  PrintFinalStats();
+  _Exit(0);  // Stop right now, don't perform any at-exit actions.
+}
+
+NO_SANITIZE_MEMORY
+void Fuzzer::AlarmCallback() {
+  assert(Options.UnitTimeoutSec > 0);
+  if (!InFuzzingThread()) return;
+  if (!RunningCB)
+    return; // We have not started running units yet.
+  size_t Seconds =
+      duration_cast<seconds>(system_clock::now() - UnitStartTime).count();
+  if (Seconds == 0)
+    return;
+  if (Options.Verbosity >= 2)
+    Printf("AlarmCallback %zd\n", Seconds);
+  if (Seconds >= (size_t)Options.UnitTimeoutSec) {
+    Printf("ALARM: working on the last Unit for %zd seconds\n", Seconds);
+    Printf("       and the timeout value is %d (use -timeout=N to change)\n",
+           Options.UnitTimeoutSec);
+    DumpCurrentUnit("timeout-");
+    Printf("==%lu== ERROR: libFuzzer: timeout after %d seconds\n", GetPid(),
+           Seconds);
+    if (EF->__sanitizer_print_stack_trace)
+      EF->__sanitizer_print_stack_trace();
+    Printf("SUMMARY: libFuzzer: timeout\n");
+    PrintFinalStats();
+    _Exit(Options.TimeoutExitCode); // Stop right now.
+  }
+}
+
+void Fuzzer::RssLimitCallback() {
+  Printf(
+      "==%lu== ERROR: libFuzzer: out-of-memory (used: %zdMb; limit: %zdMb)\n",
+      GetPid(), GetPeakRSSMb(), Options.RssLimitMb);
+  Printf("   To change the out-of-memory limit use -rss_limit_mb=<N>\n\n");
+  if (EF->__sanitizer_print_memory_profile)
+    EF->__sanitizer_print_memory_profile(95);
+  DumpCurrentUnit("oom-");
+  Printf("SUMMARY: libFuzzer: out-of-memory\n");
+  PrintFinalStats();
+  _Exit(Options.ErrorExitCode); // Stop right now.
+}
+
+void Fuzzer::PrintStats(const char *Where, const char *End, size_t Units) {
+  size_t ExecPerSec = execPerSec();
+  if (Options.OutputCSV) {
+    static bool csvHeaderPrinted = false;
+    if (!csvHeaderPrinted) {
+      csvHeaderPrinted = true;
+      Printf("runs,block_cov,bits,cc_cov,corpus,execs_per_sec,tbms,reason\n");
+    }
+    Printf("%zd,%zd,%zd,%zd,%zd,%zd,%s\n", TotalNumberOfRuns,
+           MaxCoverage.BlockCoverage, MaxCoverage.CounterBitmapBits,
+           MaxCoverage.CallerCalleeCoverage, Corpus.size(), ExecPerSec, Where);
+  }
+
+  if (!Options.Verbosity)
+    return;
+  Printf("#%zd\t%s", TotalNumberOfRuns, Where);
+  if (MaxCoverage.BlockCoverage)
+    Printf(" cov: %zd", MaxCoverage.BlockCoverage);
+  if (size_t N = MaxCoverage.VPMap.GetNumBitsSinceLastMerge())
+    Printf(" vp: %zd", N);
+  if (size_t N = TPC.GetTotalPCCoverage())
+    Printf(" cov: %zd", N);
+  if (auto TB = MaxCoverage.CounterBitmapBits)
+    Printf(" bits: %zd", TB);
+  if (size_t N = Corpus.NumFeatures())
+    Printf( " ft: %zd", N);
+  if (MaxCoverage.CallerCalleeCoverage)
+    Printf(" indir: %zd", MaxCoverage.CallerCalleeCoverage);
+  if (!Corpus.empty()) {
+    Printf(" corp: %zd", Corpus.NumActiveUnits());
+    if (size_t N = Corpus.SizeInBytes()) {
+      if (N < (1<<14))
+        Printf("/%zdb", N);
+      else if (N < (1 << 24))
+        Printf("/%zdKb", N >> 10);
+      else
+        Printf("/%zdMb", N >> 20);
+    }
+  }
+  if (Units)
+    Printf(" units: %zd", Units);
+
+  Printf(" exec/s: %zd", ExecPerSec);
+  Printf(" rss: %zdMb", GetPeakRSSMb());
+  Printf("%s", End);
+}
+
+void Fuzzer::PrintFinalStats() {
+  if (Options.PrintCoverage)
+    TPC.PrintCoverage();
+  if (Options.DumpCoverage)
+    TPC.DumpCoverage();
+  if (Options.PrintCorpusStats)
+    Corpus.PrintStats();
+  if (!Options.PrintFinalStats) return;
+  size_t ExecPerSec = execPerSec();
+  Printf("stat::number_of_executed_units: %zd\n", TotalNumberOfRuns);
+  Printf("stat::average_exec_per_sec:     %zd\n", ExecPerSec);
+  Printf("stat::new_units_added:          %zd\n", NumberOfNewUnitsAdded);
+  Printf("stat::slowest_unit_time_sec:    %zd\n", TimeOfLongestUnitInSeconds);
+  Printf("stat::peak_rss_mb:              %zd\n", GetPeakRSSMb());
+}
+
+void Fuzzer::SetMaxInputLen(size_t MaxInputLen) {
+  assert(this->MaxInputLen == 0); // Can only reset MaxInputLen from 0 to non-0.
+  assert(MaxInputLen);
+  this->MaxInputLen = MaxInputLen;
+  this->MaxMutationLen = MaxInputLen;
+  AllocateCurrentUnitData();
+  Printf("INFO: -max_len is not provided, using %zd\n", MaxInputLen);
+}
+
+void Fuzzer::SetMaxMutationLen(size_t MaxMutationLen) {
+  assert(MaxMutationLen && MaxMutationLen <= MaxInputLen);
+  this->MaxMutationLen = MaxMutationLen;
+}
+
+void Fuzzer::CheckExitOnSrcPosOrItem() {
+  if (!Options.ExitOnSrcPos.empty()) {
+    static auto *PCsSet = new std::set<uintptr_t>;
+    for (size_t i = 1, N = TPC.GetNumPCs(); i < N; i++) {
+      uintptr_t PC = TPC.GetPC(i);
+      if (!PC) continue;
+      if (!PCsSet->insert(PC).second) continue;
+      std::string Descr = DescribePC("%L", PC);
+      if (Descr.find(Options.ExitOnSrcPos) != std::string::npos) {
+        Printf("INFO: found line matching '%s', exiting.\n",
+               Options.ExitOnSrcPos.c_str());
+        _Exit(0);
+      }
+    }
+  }
+  if (!Options.ExitOnItem.empty()) {
+    if (Corpus.HasUnit(Options.ExitOnItem)) {
+      Printf("INFO: found item with checksum '%s', exiting.\n",
+             Options.ExitOnItem.c_str());
+      _Exit(0);
+    }
+  }
+}
+
+void Fuzzer::RereadOutputCorpus(size_t MaxSize) {
+  if (Options.OutputCorpus.empty() || !Options.ReloadIntervalSec) return;
+  std::vector<Unit> AdditionalCorpus;
+  ReadDirToVectorOfUnits(Options.OutputCorpus.c_str(), &AdditionalCorpus,
+                         &EpochOfLastReadOfOutputCorpus, MaxSize,
+                         /*ExitOnError*/ false);
+  if (Options.Verbosity >= 2)
+    Printf("Reload: read %zd new units.\n", AdditionalCorpus.size());
+  bool Reloaded = false;
+  for (auto &U : AdditionalCorpus) {
+    if (U.size() > MaxSize)
+      U.resize(MaxSize);
+    if (!Corpus.HasUnit(U)) {
+      if (size_t NumFeatures = RunOne(U)) {
+        CheckExitOnSrcPosOrItem();
+        Corpus.AddToCorpus(U, NumFeatures);
+        Reloaded = true;
+      }
+    }
+  }
+  if (Reloaded)
+    PrintStats("RELOAD");
+}
+
+void Fuzzer::ShuffleCorpus(UnitVector *V) {
+  std::random_shuffle(V->begin(), V->end(), MD.GetRand());
+  if (Options.PreferSmall)
+    std::stable_sort(V->begin(), V->end(), [](const Unit &A, const Unit &B) {
+      return A.size() < B.size();
+    });
+}
+
+void Fuzzer::ShuffleAndMinimize(UnitVector *InitialCorpus) {
+  Printf("#0\tREAD units: %zd\n", InitialCorpus->size());
+  if (Options.ShuffleAtStartUp)
+    ShuffleCorpus(InitialCorpus);
+
+  // Test the callback with empty input and never try it again.
+  uint8_t dummy;
+  ExecuteCallback(&dummy, 0);
+
+  for (const auto &U : *InitialCorpus) {
+    if (size_t NumFeatures = RunOne(U)) {
+      CheckExitOnSrcPosOrItem();
+      Corpus.AddToCorpus(U, NumFeatures);
+      if (Options.Verbosity >= 2)
+        Printf("NEW0: %zd L %zd\n", MaxCoverage.BlockCoverage, U.size());
+    }
+    TryDetectingAMemoryLeak(U.data(), U.size(),
+                            /*DuringInitialCorpusExecution*/ true);
+  }
+  PrintStats("INITED");
+  if (Corpus.empty()) {
+    Printf("ERROR: no interesting inputs were found. "
+           "Is the code instrumented for coverage? Exiting.\n");
+    exit(1);
+  }
+}
+
+size_t Fuzzer::RunOne(const uint8_t *Data, size_t Size) {
+  if (!Size) return 0;
+  TotalNumberOfRuns++;
+
+  ExecuteCallback(Data, Size);
+
+  size_t Res = 0;
+  if (size_t NumFeatures = TPC.CollectFeatures([&](size_t Feature) -> bool {
+        return Corpus.AddFeature(Feature, Size, Options.Shrink);
+      }))
+    Res = NumFeatures;
+
+  if (!TPC.UsingTracePcGuard()) {
+    if (TPC.UpdateValueProfileMap(&MaxCoverage.VPMap))
+      Res = 1;
+    if (!Res && RecordMaxCoverage(&MaxCoverage))
+      Res = 1;
+  }
+
+  auto TimeOfUnit =
+      duration_cast<seconds>(UnitStopTime - UnitStartTime).count();
+  if (!(TotalNumberOfRuns & (TotalNumberOfRuns - 1)) &&
+      secondsSinceProcessStartUp() >= 2)
+    PrintStats("pulse ");
+  if (TimeOfUnit > TimeOfLongestUnitInSeconds * 1.1 &&
+      TimeOfUnit >= Options.ReportSlowUnits) {
+    TimeOfLongestUnitInSeconds = TimeOfUnit;
+    Printf("Slowest unit: %zd s:\n", TimeOfLongestUnitInSeconds);
+    WriteUnitToFileWithPrefix({Data, Data + Size}, "slow-unit-");
+  }
+  return Res;
+}
+
+size_t Fuzzer::GetCurrentUnitInFuzzingThead(const uint8_t **Data) const {
+  assert(InFuzzingThread());
+  *Data = CurrentUnitData;
+  return CurrentUnitSize;
+}
+
+void Fuzzer::ExecuteCallback(const uint8_t *Data, size_t Size) {
+  assert(InFuzzingThread());
+  // We copy the contents of Unit into a separate heap buffer
+  // so that we reliably find buffer overflows in it.
+  uint8_t *DataCopy = new uint8_t[Size];
+  memcpy(DataCopy, Data, Size);
+  if (CurrentUnitData && CurrentUnitData != Data)
+    memcpy(CurrentUnitData, Data, Size);
+  CurrentUnitSize = Size;
+  AllocTracer.Start(Options.TraceMalloc);
+  UnitStartTime = system_clock::now();
+  ResetCounters();  // Reset coverage right before the callback.
+  TPC.ResetMaps();
+  RunningCB = true;
+  int Res = CB(DataCopy, Size);
+  RunningCB = false;
+  UnitStopTime = system_clock::now();
+  (void)Res;
+  assert(Res == 0);
+  HasMoreMallocsThanFrees = AllocTracer.Stop();
+  CurrentUnitSize = 0;
+  delete[] DataCopy;
+}
+
+void Fuzzer::WriteToOutputCorpus(const Unit &U) {
+  if (Options.OnlyASCII)
+    assert(IsASCII(U));
+  if (Options.OutputCorpus.empty())
+    return;
+  std::string Path = DirPlusFile(Options.OutputCorpus, Hash(U));
+  WriteToFile(U, Path);
+  if (Options.Verbosity >= 2)
+    Printf("Written to %s\n", Path.c_str());
+}
+
+void Fuzzer::WriteUnitToFileWithPrefix(const Unit &U, const char *Prefix) {
+  if (!Options.SaveArtifacts)
+    return;
+  std::string Path = Options.ArtifactPrefix + Prefix + Hash(U);
+  if (!Options.ExactArtifactPath.empty())
+    Path = Options.ExactArtifactPath; // Overrides ArtifactPrefix.
+  WriteToFile(U, Path);
+  Printf("artifact_prefix='%s'; Test unit written to %s\n",
+         Options.ArtifactPrefix.c_str(), Path.c_str());
+  if (U.size() <= kMaxUnitSizeToPrint)
+    Printf("Base64: %s\n", Base64(U).c_str());
+}
+
+void Fuzzer::PrintStatusForNewUnit(const Unit &U) {
+  if (!Options.PrintNEW)
+    return;
+  PrintStats("NEW   ", "");
+  if (Options.Verbosity) {
+    Printf(" L: %zd ", U.size());
+    MD.PrintMutationSequence();
+    Printf("\n");
+  }
+}
+
+void Fuzzer::ReportNewCoverage(InputInfo *II, const Unit &U) {
+  II->NumSuccessfullMutations++;
+  MD.RecordSuccessfulMutationSequence();
+  PrintStatusForNewUnit(U);
+  WriteToOutputCorpus(U);
+  NumberOfNewUnitsAdded++;
+  TPC.PrintNewPCs();
+}
+
+// Finds minimal number of units in 'Extra' that add coverage to 'Initial'.
+// We do it by actually executing the units, sometimes more than once,
+// because we may be using different coverage-like signals and the only
+// common thing between them is that we can say "this unit found new stuff".
+UnitVector Fuzzer::FindExtraUnits(const UnitVector &Initial,
+                                  const UnitVector &Extra) {
+  UnitVector Res = Extra;
+  UnitVector Tmp;
+  size_t OldSize = Res.size();
+  for (int Iter = 0; Iter < 10; Iter++) {
+    ShuffleCorpus(&Res);
+    TPC.ResetMaps();
+    Corpus.ResetFeatureSet();
+    ResetCoverage();
+
+    for (auto &U : Initial) {
+      TPC.ResetMaps();
+      RunOne(U);
+    }
+
+    Tmp.clear();
+    for (auto &U : Res) {
+      TPC.ResetMaps();
+      if (RunOne(U))
+        Tmp.push_back(U);
+    }
+
+    char Stat[7] = "MIN   ";
+    Stat[3] = '0' + Iter;
+    PrintStats(Stat, "\n", Tmp.size());
+
+    size_t NewSize = Tmp.size();
+    assert(NewSize <= OldSize);
+    Res.swap(Tmp);
+
+    if (NewSize + 5 >= OldSize)
+      break;
+    OldSize = NewSize;
+  }
+  return Res;
+}
+
+void Fuzzer::Merge(const std::vector<std::string> &Corpora) {
+  if (Corpora.size() <= 1) {
+    Printf("Merge requires two or more corpus dirs\n");
+    return;
+  }
+  InMergeMode = true;
+  std::vector<std::string> ExtraCorpora(Corpora.begin() + 1, Corpora.end());
+
+  assert(MaxInputLen > 0);
+  UnitVector Initial, Extra;
+  ReadDirToVectorOfUnits(Corpora[0].c_str(), &Initial, nullptr, MaxInputLen,
+                         true);
+  for (auto &C : ExtraCorpora)
+    ReadDirToVectorOfUnits(C.c_str(), &Extra, nullptr, MaxInputLen, true);
+
+  if (!Initial.empty()) {
+    Printf("=== Minimizing the initial corpus of %zd units\n", Initial.size());
+    Initial = FindExtraUnits({}, Initial);
+  }
+
+  Printf("=== Merging extra %zd units\n", Extra.size());
+  auto Res = FindExtraUnits(Initial, Extra);
+
+  for (auto &U: Res)
+    WriteToOutputCorpus(U);
+
+  Printf("=== Merge: written %zd units\n", Res.size());
+}
+
+// Tries detecting a memory leak on the particular input that we have just
+// executed before calling this function.
+void Fuzzer::TryDetectingAMemoryLeak(const uint8_t *Data, size_t Size,
+                                     bool DuringInitialCorpusExecution) {
+  if (!HasMoreMallocsThanFrees) return;  // mallocs==frees, a leak is unlikely.
+  if (!Options.DetectLeaks) return;
+  if (!&(EF->__lsan_enable) || !&(EF->__lsan_disable) ||
+      !(EF->__lsan_do_recoverable_leak_check))
+    return;  // No lsan.
+  // Run the target once again, but with lsan disabled so that if there is
+  // a real leak we do not report it twice.
+  EF->__lsan_disable();
+  ExecuteCallback(Data, Size);
+  EF->__lsan_enable();
+  if (!HasMoreMallocsThanFrees) return;  // a leak is unlikely.
+  if (NumberOfLeakDetectionAttempts++ > 1000) {
+    Options.DetectLeaks = false;
+    Printf("INFO: libFuzzer disabled leak detection after every mutation.\n"
+           "      Most likely the target function accumulates allocated\n"
+           "      memory in a global state w/o actually leaking it.\n"
+           "      You may try running this binary with -trace_malloc=[12]"
+           "      to get a trace of mallocs and frees.\n"
+           "      If LeakSanitizer is enabled in this process it will still\n"
+           "      run on the process shutdown.\n");
+    return;
+  }
+  // Now perform the actual lsan pass. This is expensive and we must ensure
+  // we don't call it too often.
+  if (EF->__lsan_do_recoverable_leak_check()) { // Leak is found, report it.
+    if (DuringInitialCorpusExecution)
+      Printf("\nINFO: a leak has been found in the initial corpus.\n\n");
+    Printf("INFO: to ignore leaks on libFuzzer side use -detect_leaks=0.\n\n");
+    CurrentUnitSize = Size;
+    DumpCurrentUnit("leak-");
+    PrintFinalStats();
+    _Exit(Options.ErrorExitCode);  // not exit() to disable lsan further on.
+  }
+}
+
+void Fuzzer::MutateAndTestOne() {
+  MD.StartMutationSequence();
+
+  auto &II = Corpus.ChooseUnitToMutate(MD.GetRand());
+  const auto &U = II.U;
+  memcpy(BaseSha1, II.Sha1, sizeof(BaseSha1));
+  assert(CurrentUnitData);
+  size_t Size = U.size();
+  assert(Size <= MaxInputLen && "Oversized Unit");
+  memcpy(CurrentUnitData, U.data(), Size);
+
+  assert(MaxMutationLen > 0);
+
+  for (int i = 0; i < Options.MutateDepth; i++) {
+    if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
+      break;
+    size_t NewSize = 0;
+    NewSize = MD.Mutate(CurrentUnitData, Size, MaxMutationLen);
+    assert(NewSize > 0 && "Mutator returned empty unit");
+    assert(NewSize <= MaxMutationLen && "Mutator return overisized unit");
+    Size = NewSize;
+    if (i == 0)
+      StartTraceRecording();
+    II.NumExecutedMutations++;
+    if (size_t NumFeatures = RunOne(CurrentUnitData, Size)) {
+      Corpus.AddToCorpus({CurrentUnitData, CurrentUnitData + Size}, NumFeatures,
+                         /*MayDeleteFile=*/true);
+      ReportNewCoverage(&II, {CurrentUnitData, CurrentUnitData + Size});
+      CheckExitOnSrcPosOrItem();
+    }
+    StopTraceRecording();
+    TryDetectingAMemoryLeak(CurrentUnitData, Size,
+                            /*DuringInitialCorpusExecution*/ false);
+  }
+}
+
+void Fuzzer::ResetCoverage() {
+  ResetEdgeCoverage();
+  MaxCoverage.Reset();
+  PrepareCounters(&MaxCoverage);
+}
+
+void Fuzzer::Loop() {
+  system_clock::time_point LastCorpusReload = system_clock::now();
+  if (Options.DoCrossOver)
+    MD.SetCorpus(&Corpus);
+  while (true) {
+    auto Now = system_clock::now();
+    if (duration_cast<seconds>(Now - LastCorpusReload).count() >=
+        Options.ReloadIntervalSec) {
+      RereadOutputCorpus(MaxInputLen);
+      LastCorpusReload = system_clock::now();
+    }
+    if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
+      break;
+    if (TimedOut()) break;
+    // Perform several mutations and runs.
+    MutateAndTestOne();
+  }
+
+  PrintStats("DONE  ", "\n");
+  MD.PrintRecommendedDictionary();
+}
+
+void Fuzzer::MinimizeCrashLoop(const Unit &U) {
+  if (U.size() <= 2) return;
+  while (!TimedOut() && TotalNumberOfRuns < Options.MaxNumberOfRuns) {
+    MD.StartMutationSequence();
+    memcpy(CurrentUnitData, U.data(), U.size());
+    for (int i = 0; i < Options.MutateDepth; i++) {
+      size_t NewSize = MD.Mutate(CurrentUnitData, U.size(), MaxMutationLen);
+      assert(NewSize > 0 && NewSize <= MaxMutationLen);
+      RunOne(CurrentUnitData, NewSize);
+      TryDetectingAMemoryLeak(CurrentUnitData, NewSize,
+                              /*DuringInitialCorpusExecution*/ false);
+    }
+  }
+}
+
+} // namespace fuzzer
+
+extern "C" {
+
+size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize) {
+  assert(fuzzer::F);
+  return fuzzer::F->GetMD().DefaultMutate(Data, Size, MaxSize);
+}
+}  // extern "C"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMain.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMain.cpp
new file mode 100644
index 00000000..af865720
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMain.cpp
@@ -0,0 +1,21 @@
+//===- FuzzerMain.cpp - main() function and flags -------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// main() and flags.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerDefs.h"
+
+extern "C" {
+// This function should be defined by the user.
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
+}  // extern "C"
+
+int main(int argc, char **argv) {
+  return fuzzer::FuzzerDriver(&argc, &argv, LLVMFuzzerTestOneInput);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMerge.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMerge.cpp
new file mode 100644
index 00000000..84660e0f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMerge.cpp
@@ -0,0 +1,261 @@
+//===- FuzzerMerge.cpp - merging corpora ----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Merging corpora.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerInternal.h"
+#include "FuzzerIO.h"
+#include "FuzzerMerge.h"
+#include "FuzzerTracePC.h"
+#include "FuzzerUtil.h"
+
+#include <fstream>
+#include <iterator>
+#include <sstream>
+
+namespace fuzzer {
+
+bool Merger::Parse(const std::string &Str, bool ParseCoverage) {
+  std::istringstream SS(Str);
+  return Parse(SS, ParseCoverage);
+}
+
+void Merger::ParseOrExit(std::istream &IS, bool ParseCoverage) {
+  if (!Parse(IS, ParseCoverage)) {
+    Printf("MERGE: failed to parse the control file (unexpected error)\n");
+    exit(1);
+  }
+}
+
+// The control file example:
+//
+// 3 # The number of inputs
+// 1 # The number of inputs in the first corpus, <= the previous number
+// file0
+// file1
+// file2  # One file name per line.
+// STARTED 0 123  # FileID, file size
+// DONE 0 1 4 6 8  # FileID COV1 COV2 ...
+// STARTED 1 456  # If DONE is missing, the input crashed while processing.
+// STARTED 2 567
+// DONE 2 8 9
+bool Merger::Parse(std::istream &IS, bool ParseCoverage) {
+  LastFailure.clear();
+  std::string Line;
+
+  // Parse NumFiles.
+  if (!std::getline(IS, Line, '\n')) return false;
+  std::istringstream L1(Line);
+  size_t NumFiles = 0;
+  L1 >> NumFiles;
+  if (NumFiles == 0 || NumFiles > 10000000) return false;
+
+  // Parse NumFilesInFirstCorpus.
+  if (!std::getline(IS, Line, '\n')) return false;
+  std::istringstream L2(Line);
+  NumFilesInFirstCorpus = NumFiles + 1;
+  L2 >> NumFilesInFirstCorpus;
+  if (NumFilesInFirstCorpus > NumFiles) return false;
+
+  // Parse file names.
+  Files.resize(NumFiles);
+  for (size_t i = 0; i < NumFiles; i++)
+    if (!std::getline(IS, Files[i].Name, '\n'))
+      return false;
+
+  // Parse STARTED and DONE lines.
+  size_t ExpectedStartMarker = 0;
+  const size_t kInvalidStartMarker = -1;
+  size_t LastSeenStartMarker = kInvalidStartMarker;
+  while (std::getline(IS, Line, '\n')) {
+    std::istringstream ISS1(Line);
+    std::string Marker;
+    size_t N;
+    ISS1 >> Marker;
+    ISS1 >> N;
+    if (Marker == "STARTED") {
+      // STARTED FILE_ID FILE_SIZE
+      if (ExpectedStartMarker != N)
+        return false;
+      ISS1 >> Files[ExpectedStartMarker].Size;
+      LastSeenStartMarker = ExpectedStartMarker;
+      assert(ExpectedStartMarker < Files.size());
+      ExpectedStartMarker++;
+    } else if (Marker == "DONE") {
+      // DONE FILE_SIZE COV1 COV2 COV3 ...
+      size_t CurrentFileIdx = N;
+      if (CurrentFileIdx != LastSeenStartMarker)
+        return false;
+      LastSeenStartMarker = kInvalidStartMarker;
+      if (ParseCoverage) {
+        auto &V = Files[CurrentFileIdx].Features;
+        V.clear();
+        while (ISS1 >> std::hex >> N)
+          V.push_back(N);
+        std::sort(V.begin(), V.end());
+      }
+    } else {
+      return false;
+    }
+  }
+  if (LastSeenStartMarker != kInvalidStartMarker)
+    LastFailure = Files[LastSeenStartMarker].Name;
+
+  FirstNotProcessedFile = ExpectedStartMarker;
+  return true;
+}
+
+// Decides which files need to be merged (add thost to NewFiles).
+// Returns the number of new features added.
+size_t Merger::Merge(std::vector<std::string> *NewFiles) {
+  NewFiles->clear();
+  assert(NumFilesInFirstCorpus <= Files.size());
+  std::set<uint32_t> AllFeatures;
+
+  // What features are in the initial corpus?
+  for (size_t i = 0; i < NumFilesInFirstCorpus; i++) {
+    auto &Cur = Files[i].Features;
+    AllFeatures.insert(Cur.begin(), Cur.end());
+  }
+  size_t InitialNumFeatures = AllFeatures.size();
+
+  // Remove all features that we already know from all other inputs.
+  for (size_t i = NumFilesInFirstCorpus; i < Files.size(); i++) {
+    auto &Cur = Files[i].Features;
+    std::vector<uint32_t> Tmp;
+    std::set_difference(Cur.begin(), Cur.end(), AllFeatures.begin(),
+                        AllFeatures.end(), std::inserter(Tmp, Tmp.begin()));
+    Cur.swap(Tmp);
+  }
+
+  // Sort. Give preference to
+  //   * smaller files
+  //   * files with more features.
+  std::sort(Files.begin() + NumFilesInFirstCorpus, Files.end(),
+            [&](const MergeFileInfo &a, const MergeFileInfo &b) -> bool {
+              if (a.Size != b.Size)
+                return a.Size < b.Size;
+              return a.Features.size() > b.Features.size();
+            });
+
+  // One greedy pass: add the file's features to AllFeatures.
+  // If new features were added, add this file to NewFiles.
+  for (size_t i = NumFilesInFirstCorpus; i < Files.size(); i++) {
+    auto &Cur = Files[i].Features;
+    // Printf("%s -> sz %zd ft %zd\n", Files[i].Name.c_str(),
+    //       Files[i].Size, Cur.size());
+    size_t OldSize = AllFeatures.size();
+    AllFeatures.insert(Cur.begin(), Cur.end());
+    if (AllFeatures.size() > OldSize)
+      NewFiles->push_back(Files[i].Name);
+  }
+  return AllFeatures.size() - InitialNumFeatures;
+}
+
+// Inner process. May crash if the target crashes.
+void Fuzzer::CrashResistantMergeInternalStep(const std::string &CFPath) {
+  Printf("MERGE-INNER: using the control file '%s'\n", CFPath.c_str());
+  Merger M;
+  std::ifstream IF(CFPath);
+  M.ParseOrExit(IF, false);
+  IF.close();
+  if (!M.LastFailure.empty())
+    Printf("MERGE-INNER: '%s' caused a failure at the previous merge step\n",
+           M.LastFailure.c_str());
+
+  Printf("MERGE-INNER: %zd total files;"
+         " %zd processed earlier; will process %zd files now\n",
+         M.Files.size(), M.FirstNotProcessedFile,
+         M.Files.size() - M.FirstNotProcessedFile);
+
+  std::ofstream OF(CFPath, std::ofstream::out | std::ofstream::app);
+  for (size_t i = M.FirstNotProcessedFile; i < M.Files.size(); i++) {
+    auto U = FileToVector(M.Files[i].Name);
+    if (U.size() > MaxInputLen) {
+      U.resize(MaxInputLen);
+      U.shrink_to_fit();
+    }
+    std::ostringstream StartedLine;
+    // Write the pre-run marker.
+    OF << "STARTED " << std::dec << i << " " << U.size() << "\n";
+    OF.flush();  // Flush is important since ExecuteCommand may crash.
+    // Run.
+    TPC.ResetMaps();
+    ExecuteCallback(U.data(), U.size());
+    // Collect coverage.
+    std::set<size_t> Features;
+    TPC.CollectFeatures([&](size_t Feature) -> bool {
+      Features.insert(Feature);
+      return true;
+    });
+    // Show stats.
+    TotalNumberOfRuns++;
+    if (!(TotalNumberOfRuns & (TotalNumberOfRuns - 1)))
+      PrintStats("pulse ");
+    // Write the post-run marker and the coverage.
+    OF << "DONE " << i;
+    for (size_t F : Features)
+      OF << " " << std::hex << F;
+    OF << "\n";
+  }
+}
+
+// Outer process. Does not call the target code and thus sohuld not fail.
+void Fuzzer::CrashResistantMerge(const std::vector<std::string> &Args,
+                                 const std::vector<std::string> &Corpora) {
+  if (Corpora.size() <= 1) {
+    Printf("Merge requires two or more corpus dirs\n");
+    return;
+  }
+  std::vector<std::string> AllFiles;
+  ListFilesInDirRecursive(Corpora[0], nullptr, &AllFiles, /*TopDir*/true);
+  size_t NumFilesInFirstCorpus = AllFiles.size();
+  for (size_t i = 1; i < Corpora.size(); i++)
+    ListFilesInDirRecursive(Corpora[i], nullptr, &AllFiles, /*TopDir*/true);
+  Printf("MERGE-OUTER: %zd files, %zd in the initial corpus\n",
+         AllFiles.size(), NumFilesInFirstCorpus);
+  std::string CFPath =
+      "libFuzzerTemp." + std::to_string(GetPid()) + ".txt";
+  // Write the control file.
+  RemoveFile(CFPath);
+  std::ofstream ControlFile(CFPath);
+  ControlFile << AllFiles.size() << "\n";
+  ControlFile << NumFilesInFirstCorpus << "\n";
+  for (auto &Path: AllFiles)
+    ControlFile << Path << "\n";
+  ControlFile.close();
+
+  // Execute the inner process untill it passes.
+  // Every inner process should execute at least one input.
+  std::string BaseCmd = CloneArgsWithoutX(Args, "keep-all-flags");
+  for (size_t i = 1; i <= AllFiles.size(); i++) {
+    Printf("MERGE-OUTER: attempt %zd\n", i);
+    auto ExitCode =
+        ExecuteCommand(BaseCmd + " -merge_control_file=" + CFPath);
+    if (!ExitCode) {
+      Printf("MERGE-OUTER: succesfull in %zd attempt(s)\n", i);
+      break;
+    }
+  }
+  // Read the control file and do the merge.
+  Merger M;
+  std::ifstream IF(CFPath);
+  M.ParseOrExit(IF, true);
+  IF.close();
+  std::vector<std::string> NewFiles;
+  size_t NumNewFeatures = M.Merge(&NewFiles);
+  Printf("MERGE-OUTER: %zd new files with %zd new features added\n",
+         NewFiles.size(), NumNewFeatures);
+  for (auto &F: NewFiles)
+    WriteToOutputCorpus(FileToVector(F));
+  // We are done, delete the control file.
+  RemoveFile(CFPath);
+}
+
+} // namespace fuzzer
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMerge.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMerge.h
new file mode 100644
index 00000000..8a2fe5d7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMerge.h
@@ -0,0 +1,70 @@
+//===- FuzzerMerge.h - merging corpa ----------------------------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Merging Corpora.
+//
+// The task:
+//   Take the existing corpus (possibly empty) and merge new inputs into
+//   it so that only inputs with new coverage ('features') are added.
+//   The process should tolerate the crashes, OOMs, leaks, etc.
+//
+// Algorithm:
+//   The outter process collects the set of files and writes their names
+//   into a temporary "control" file, then repeatedly launches the inner
+//   process until all inputs are processed.
+//   The outer process does not actually execute the target code.
+//
+//   The inner process reads the control file and sees a) list of all the inputs
+//   and b) the last processed input. Then it starts processing the inputs one
+//   by one. Before processing every input it writes one line to control file:
+//   STARTED INPUT_ID INPUT_SIZE
+//   After processing an input it write another line:
+//   DONE INPUT_ID Feature1 Feature2 Feature3 ...
+//   If a crash happens while processing an input the last line in the control
+//   file will be "STARTED INPUT_ID" and so the next process will know
+//   where to resume.
+//
+//   Once all inputs are processed by the innner process(es) the outer process
+//   reads the control files and does the merge based entirely on the contents
+//   of control file.
+//   It uses a single pass greedy algorithm choosing first the smallest inputs
+//   within the same size the inputs that have more new features.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_MERGE_H
+#define LLVM_FUZZER_MERGE_H
+
+#include "FuzzerDefs.h"
+
+#include <istream>
+#include <set>
+
+namespace fuzzer {
+
+struct MergeFileInfo {
+  std::string Name;
+  size_t Size = 0;
+  std::vector<uint32_t> Features;
+};
+
+struct Merger {
+  std::vector<MergeFileInfo> Files;
+  size_t NumFilesInFirstCorpus = 0;
+  size_t FirstNotProcessedFile = 0;
+  std::string LastFailure;
+
+  bool Parse(std::istream &IS, bool ParseCoverage);
+  bool Parse(const std::string &Str, bool ParseCoverage);
+  void ParseOrExit(std::istream &IS, bool ParseCoverage);
+  size_t Merge(std::vector<std::string> *NewFiles);
+};
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_MERGE_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMutate.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMutate.cpp
new file mode 100644
index 00000000..80b7a5f9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMutate.cpp
@@ -0,0 +1,527 @@
+//===- FuzzerMutate.cpp - Mutate a test input -----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Mutate a test input.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerCorpus.h"
+#include "FuzzerDefs.h"
+#include "FuzzerExtFunctions.h"
+#include "FuzzerIO.h"
+#include "FuzzerMutate.h"
+#include "FuzzerOptions.h"
+
+namespace fuzzer {
+
+const size_t Dictionary::kMaxDictSize;
+
+static void PrintASCII(const Word &W, const char *PrintAfter) {
+  PrintASCII(W.data(), W.size(), PrintAfter);
+}
+
+MutationDispatcher::MutationDispatcher(Random &Rand,
+                                       const FuzzingOptions &Options)
+    : Rand(Rand), Options(Options) {
+  DefaultMutators.insert(
+      DefaultMutators.begin(),
+      {
+          {&MutationDispatcher::Mutate_EraseBytes, "EraseBytes"},
+          {&MutationDispatcher::Mutate_InsertByte, "InsertByte"},
+          {&MutationDispatcher::Mutate_InsertRepeatedBytes,
+           "InsertRepeatedBytes"},
+          {&MutationDispatcher::Mutate_ChangeByte, "ChangeByte"},
+          {&MutationDispatcher::Mutate_ChangeBit, "ChangeBit"},
+          {&MutationDispatcher::Mutate_ShuffleBytes, "ShuffleBytes"},
+          {&MutationDispatcher::Mutate_ChangeASCIIInteger, "ChangeASCIIInt"},
+          {&MutationDispatcher::Mutate_ChangeBinaryInteger, "ChangeBinInt"},
+          {&MutationDispatcher::Mutate_CopyPart, "CopyPart"},
+          {&MutationDispatcher::Mutate_CrossOver, "CrossOver"},
+          {&MutationDispatcher::Mutate_AddWordFromManualDictionary,
+           "ManualDict"},
+          {&MutationDispatcher::Mutate_AddWordFromTemporaryAutoDictionary,
+           "TempAutoDict"},
+          {&MutationDispatcher::Mutate_AddWordFromPersistentAutoDictionary,
+           "PersAutoDict"},
+      });
+  if(Options.UseCmp)
+    DefaultMutators.push_back(
+        {&MutationDispatcher::Mutate_AddWordFromTORC, "CMP"});
+
+  if (EF->LLVMFuzzerCustomMutator)
+    Mutators.push_back({&MutationDispatcher::Mutate_Custom, "Custom"});
+  else
+    Mutators = DefaultMutators;
+
+  if (EF->LLVMFuzzerCustomCrossOver)
+    Mutators.push_back(
+        {&MutationDispatcher::Mutate_CustomCrossOver, "CustomCrossOver"});
+}
+
+static char RandCh(Random &Rand) {
+  if (Rand.RandBool()) return Rand(256);
+  const char *Special = "!*'();:@&=+$,/?%#[]012Az-`~.\xff\x00";
+  return Special[Rand(sizeof(Special) - 1)];
+}
+
+size_t MutationDispatcher::Mutate_Custom(uint8_t *Data, size_t Size,
+                                         size_t MaxSize) {
+  return EF->LLVMFuzzerCustomMutator(Data, Size, MaxSize, Rand.Rand());
+}
+
+size_t MutationDispatcher::Mutate_CustomCrossOver(uint8_t *Data, size_t Size,
+                                                  size_t MaxSize) {
+  if (!Corpus || Corpus->size() < 2 || Size == 0)
+    return 0;
+  size_t Idx = Rand(Corpus->size());
+  const Unit &Other = (*Corpus)[Idx];
+  if (Other.empty())
+    return 0;
+  MutateInPlaceHere.resize(MaxSize);
+  auto &U = MutateInPlaceHere;
+  size_t NewSize = EF->LLVMFuzzerCustomCrossOver(
+      Data, Size, Other.data(), Other.size(), U.data(), U.size(), Rand.Rand());
+  if (!NewSize)
+    return 0;
+  assert(NewSize <= MaxSize && "CustomCrossOver returned overisized unit");
+  memcpy(Data, U.data(), NewSize);
+  return NewSize;
+}
+
+size_t MutationDispatcher::Mutate_ShuffleBytes(uint8_t *Data, size_t Size,
+                                               size_t MaxSize) {
+  if (Size > MaxSize) return 0;
+  assert(Size);
+  size_t ShuffleAmount =
+      Rand(std::min(Size, (size_t)8)) + 1; // [1,8] and <= Size.
+  size_t ShuffleStart = Rand(Size - ShuffleAmount);
+  assert(ShuffleStart + ShuffleAmount <= Size);
+  std::random_shuffle(Data + ShuffleStart, Data + ShuffleStart + ShuffleAmount,
+                      Rand);
+  return Size;
+}
+
+size_t MutationDispatcher::Mutate_EraseBytes(uint8_t *Data, size_t Size,
+                                             size_t MaxSize) {
+  assert(Size);
+  if (Size == 1) return 0;
+  size_t N = Rand(Size / 2) + 1;
+  assert(N < Size);
+  size_t Idx = Rand(Size - N + 1);
+  // Erase Data[Idx:Idx+N].
+  memmove(Data + Idx, Data + Idx + N, Size - Idx - N);
+  // Printf("Erase: %zd %zd => %zd; Idx %zd\n", N, Size, Size - N, Idx);
+  return Size - N;
+}
+
+size_t MutationDispatcher::Mutate_InsertByte(uint8_t *Data, size_t Size,
+                                             size_t MaxSize) {
+  if (Size >= MaxSize) return 0;
+  size_t Idx = Rand(Size + 1);
+  // Insert new value at Data[Idx].
+  memmove(Data + Idx + 1, Data + Idx, Size - Idx);
+  Data[Idx] = RandCh(Rand);
+  return Size + 1;
+}
+
+size_t MutationDispatcher::Mutate_InsertRepeatedBytes(uint8_t *Data,
+                                                      size_t Size,
+                                                      size_t MaxSize) {
+  const size_t kMinBytesToInsert = 3;
+  if (Size + kMinBytesToInsert >= MaxSize) return 0;
+  size_t MaxBytesToInsert = std::min(MaxSize - Size, (size_t)128);
+  size_t N = Rand(MaxBytesToInsert - kMinBytesToInsert + 1) + kMinBytesToInsert;
+  assert(Size + N <= MaxSize && N);
+  size_t Idx = Rand(Size + 1);
+  // Insert new values at Data[Idx].
+  memmove(Data + Idx + N, Data + Idx, Size - Idx);
+  // Give preference to 0x00 and 0xff.
+  uint8_t Byte = Rand.RandBool() ? Rand(256) : (Rand.RandBool() ? 0 : 255);
+  for (size_t i = 0; i < N; i++)
+    Data[Idx + i] = Byte;
+  return Size + N;
+}
+
+size_t MutationDispatcher::Mutate_ChangeByte(uint8_t *Data, size_t Size,
+                                             size_t MaxSize) {
+  if (Size > MaxSize) return 0;
+  size_t Idx = Rand(Size);
+  Data[Idx] = RandCh(Rand);
+  return Size;
+}
+
+size_t MutationDispatcher::Mutate_ChangeBit(uint8_t *Data, size_t Size,
+                                            size_t MaxSize) {
+  if (Size > MaxSize) return 0;
+  size_t Idx = Rand(Size);
+  Data[Idx] ^= 1 << Rand(8);
+  return Size;
+}
+
+size_t MutationDispatcher::Mutate_AddWordFromManualDictionary(uint8_t *Data,
+                                                              size_t Size,
+                                                              size_t MaxSize) {
+  return AddWordFromDictionary(ManualDictionary, Data, Size, MaxSize);
+}
+
+size_t MutationDispatcher::Mutate_AddWordFromTemporaryAutoDictionary(
+    uint8_t *Data, size_t Size, size_t MaxSize) {
+  return AddWordFromDictionary(TempAutoDictionary, Data, Size, MaxSize);
+}
+
+size_t MutationDispatcher::ApplyDictionaryEntry(uint8_t *Data, size_t Size,
+                                                size_t MaxSize,
+                                                DictionaryEntry &DE) {
+  const Word &W = DE.GetW();
+  bool UsePositionHint = DE.HasPositionHint() &&
+                         DE.GetPositionHint() + W.size() < Size &&
+                         Rand.RandBool();
+  if (Rand.RandBool()) {  // Insert W.
+    if (Size + W.size() > MaxSize) return 0;
+    size_t Idx = UsePositionHint ? DE.GetPositionHint() : Rand(Size + 1);
+    memmove(Data + Idx + W.size(), Data + Idx, Size - Idx);
+    memcpy(Data + Idx, W.data(), W.size());
+    Size += W.size();
+  } else {  // Overwrite some bytes with W.
+    if (W.size() > Size) return 0;
+    size_t Idx = UsePositionHint ? DE.GetPositionHint() : Rand(Size - W.size());
+    memcpy(Data + Idx, W.data(), W.size());
+  }
+  return Size;
+}
+
+// Somewhere in the past we have observed a comparison instructions
+// with arguments Arg1 Arg2. This function tries to guess a dictionary
+// entry that will satisfy that comparison.
+// It first tries to find one of the arguments (possibly swapped) in the
+// input and if it succeeds it creates a DE with a position hint.
+// Otherwise it creates a DE with one of the arguments w/o a position hint.
+template <class T>
+DictionaryEntry MutationDispatcher::MakeDictionaryEntryFromCMP(
+    T Arg1, T Arg2, const uint8_t *Data, size_t Size) {
+  ScopedDoingMyOwnMemmem scoped_doing_my_own_memmem;
+  bool HandleFirst = Rand.RandBool();
+  T ExistingBytes, DesiredBytes;
+  Word W;
+  const uint8_t *End = Data + Size;
+  for (int Arg = 0; Arg < 2; Arg++) {
+    ExistingBytes = HandleFirst ? Arg1 : Arg2;
+    DesiredBytes = HandleFirst ? Arg2 : Arg1;
+    DesiredBytes += Rand(-1, 1);
+    if (Rand.RandBool()) ExistingBytes = Bswap(ExistingBytes);
+    if (Rand.RandBool()) DesiredBytes = Bswap(DesiredBytes);
+    HandleFirst = !HandleFirst;
+    W.Set(reinterpret_cast<uint8_t*>(&DesiredBytes), sizeof(T));
+    const size_t kMaxNumPositions = 8;
+    size_t Positions[kMaxNumPositions];
+    size_t NumPositions = 0;
+    for (const uint8_t *Cur = Data;
+         Cur < End && NumPositions < kMaxNumPositions; Cur++) {
+      Cur = (uint8_t *)SearchMemory(Cur, End - Cur, &ExistingBytes, sizeof(T));
+      if (!Cur) break;
+      Positions[NumPositions++] = Cur - Data;
+    }
+    if (!NumPositions) break;
+    return DictionaryEntry(W, Positions[Rand(NumPositions)]);
+  }
+  DictionaryEntry DE(W);
+  return DE;
+}
+
+size_t MutationDispatcher::Mutate_AddWordFromTORC(
+    uint8_t *Data, size_t Size, size_t MaxSize) {
+  Word W;
+  DictionaryEntry DE;
+  if (Rand.RandBool()) {
+    auto X = TPC.TORC8.Get(Rand.Rand());
+    DE = MakeDictionaryEntryFromCMP(X.A, X.B, Data, Size);
+  } else {
+    auto X = TPC.TORC4.Get(Rand.Rand());
+    if ((X.A >> 16) == 0 && (X.B >> 16) == 0 && Rand.RandBool())
+      DE = MakeDictionaryEntryFromCMP((uint16_t)X.A, (uint16_t)X.B, Data,
+                                      Size);
+    else
+      DE = MakeDictionaryEntryFromCMP(X.A, X.B, Data, Size);
+  }
+  Size = ApplyDictionaryEntry(Data, Size, MaxSize, DE);
+  if (!Size) return 0;
+  DictionaryEntry &DERef =
+      CmpDictionaryEntriesDeque[CmpDictionaryEntriesDequeIdx++ %
+                                kCmpDictionaryEntriesDequeSize];
+  DERef = DE;
+  CurrentDictionaryEntrySequence.push_back(&DERef);
+  return Size;
+}
+
+size_t MutationDispatcher::Mutate_AddWordFromPersistentAutoDictionary(
+    uint8_t *Data, size_t Size, size_t MaxSize) {
+  return AddWordFromDictionary(PersistentAutoDictionary, Data, Size, MaxSize);
+}
+
+size_t MutationDispatcher::AddWordFromDictionary(Dictionary &D, uint8_t *Data,
+                                                 size_t Size, size_t MaxSize) {
+  if (Size > MaxSize) return 0;
+  if (D.empty()) return 0;
+  DictionaryEntry &DE = D[Rand(D.size())];
+  Size = ApplyDictionaryEntry(Data, Size, MaxSize, DE);
+  if (!Size) return 0;
+  DE.IncUseCount();
+  CurrentDictionaryEntrySequence.push_back(&DE);
+  return Size;
+}
+
+// Overwrites part of To[0,ToSize) with a part of From[0,FromSize).
+// Returns ToSize.
+size_t MutationDispatcher::CopyPartOf(const uint8_t *From, size_t FromSize,
+                                      uint8_t *To, size_t ToSize) {
+  // Copy From[FromBeg, FromBeg + CopySize) into To[ToBeg, ToBeg + CopySize).
+  size_t ToBeg = Rand(ToSize);
+  size_t CopySize = Rand(ToSize - ToBeg) + 1;
+  assert(ToBeg + CopySize <= ToSize);
+  CopySize = std::min(CopySize, FromSize);
+  size_t FromBeg = Rand(FromSize - CopySize + 1);
+  assert(FromBeg + CopySize <= FromSize);
+  memmove(To + ToBeg, From + FromBeg, CopySize);
+  return ToSize;
+}
+
+// Inserts part of From[0,ToSize) into To.
+// Returns new size of To on success or 0 on failure.
+size_t MutationDispatcher::InsertPartOf(const uint8_t *From, size_t FromSize,
+                                        uint8_t *To, size_t ToSize,
+                                        size_t MaxToSize) {
+  if (ToSize >= MaxToSize) return 0;
+  size_t AvailableSpace = MaxToSize - ToSize;
+  size_t MaxCopySize = std::min(AvailableSpace, FromSize);
+  size_t CopySize = Rand(MaxCopySize) + 1;
+  size_t FromBeg = Rand(FromSize - CopySize + 1);
+  assert(FromBeg + CopySize <= FromSize);
+  size_t ToInsertPos = Rand(ToSize + 1);
+  assert(ToInsertPos + CopySize <= MaxToSize);
+  size_t TailSize = ToSize - ToInsertPos;
+  if (To == From) {
+    MutateInPlaceHere.resize(MaxToSize);
+    memcpy(MutateInPlaceHere.data(), From + FromBeg, CopySize);
+    memmove(To + ToInsertPos + CopySize, To + ToInsertPos, TailSize);
+    memmove(To + ToInsertPos, MutateInPlaceHere.data(), CopySize);
+  } else {
+    memmove(To + ToInsertPos + CopySize, To + ToInsertPos, TailSize);
+    memmove(To + ToInsertPos, From + FromBeg, CopySize);
+  }
+  return ToSize + CopySize;
+}
+
+size_t MutationDispatcher::Mutate_CopyPart(uint8_t *Data, size_t Size,
+                                           size_t MaxSize) {
+  if (Size > MaxSize) return 0;
+  if (Rand.RandBool())
+    return CopyPartOf(Data, Size, Data, Size);
+  else
+    return InsertPartOf(Data, Size, Data, Size, MaxSize);
+}
+
+size_t MutationDispatcher::Mutate_ChangeASCIIInteger(uint8_t *Data, size_t Size,
+                                                     size_t MaxSize) {
+  if (Size > MaxSize) return 0;
+  size_t B = Rand(Size);
+  while (B < Size && !isdigit(Data[B])) B++;
+  if (B == Size) return 0;
+  size_t E = B;
+  while (E < Size && isdigit(Data[E])) E++;
+  assert(B < E);
+  // now we have digits in [B, E).
+  // strtol and friends don't accept non-zero-teminated data, parse it manually.
+  uint64_t Val = Data[B] - '0';
+  for (size_t i = B + 1; i < E; i++)
+    Val = Val * 10 + Data[i] - '0';
+
+  // Mutate the integer value.
+  switch(Rand(5)) {
+    case 0: Val++; break;
+    case 1: Val--; break;
+    case 2: Val /= 2; break;
+    case 3: Val *= 2; break;
+    case 4: Val = Rand(Val * Val); break;
+    default: assert(0);
+  }
+  // Just replace the bytes with the new ones, don't bother moving bytes.
+  for (size_t i = B; i < E; i++) {
+    size_t Idx = E + B - i - 1;
+    assert(Idx >= B && Idx < E);
+    Data[Idx] = (Val % 10) + '0';
+    Val /= 10;
+  }
+  return Size;
+}
+
+template<class T>
+size_t ChangeBinaryInteger(uint8_t *Data, size_t Size, Random &Rand) {
+  if (Size < sizeof(T)) return 0;
+  size_t Off = Rand(Size - sizeof(T) + 1);
+  assert(Off + sizeof(T) <= Size);
+  T Val;
+  if (Off < 64 && !Rand(4)) {
+    Val = Size;
+    if (Rand.RandBool())
+      Val = Bswap(Val);
+  } else {
+    memcpy(&Val, Data + Off, sizeof(Val));
+    T Add = Rand(21);
+    Add -= 10;
+    if (Rand.RandBool())
+      Val = Bswap(T(Bswap(Val) + Add)); // Add assuming different endiannes.
+    else
+      Val = Val + Add;               // Add assuming current endiannes.
+    if (Add == 0 || Rand.RandBool()) // Maybe negate.
+      Val = -Val;
+  }
+  memcpy(Data + Off, &Val, sizeof(Val));
+  return Size;
+}
+
+size_t MutationDispatcher::Mutate_ChangeBinaryInteger(uint8_t *Data,
+                                                      size_t Size,
+                                                      size_t MaxSize) {
+  if (Size > MaxSize) return 0;
+  switch (Rand(4)) {
+    case 3: return ChangeBinaryInteger<uint64_t>(Data, Size, Rand);
+    case 2: return ChangeBinaryInteger<uint32_t>(Data, Size, Rand);
+    case 1: return ChangeBinaryInteger<uint16_t>(Data, Size, Rand);
+    case 0: return ChangeBinaryInteger<uint8_t>(Data, Size, Rand);
+    default: assert(0);
+  }
+  return 0;
+}
+
+size_t MutationDispatcher::Mutate_CrossOver(uint8_t *Data, size_t Size,
+                                            size_t MaxSize) {
+  if (Size > MaxSize) return 0;
+  if (!Corpus || Corpus->size() < 2 || Size == 0) return 0;
+  size_t Idx = Rand(Corpus->size());
+  const Unit &O = (*Corpus)[Idx];
+  if (O.empty()) return 0;
+  MutateInPlaceHere.resize(MaxSize);
+  auto &U = MutateInPlaceHere;
+  size_t NewSize = 0;
+  switch(Rand(3)) {
+    case 0:
+      NewSize = CrossOver(Data, Size, O.data(), O.size(), U.data(), U.size());
+      break;
+    case 1:
+      NewSize = InsertPartOf(O.data(), O.size(), U.data(), U.size(), MaxSize);
+      if (NewSize)
+        break;
+      // LLVM_FALLTHROUGH;
+    case 2:
+      NewSize = CopyPartOf(O.data(), O.size(), U.data(), U.size());
+      break;
+    default: assert(0);
+  }
+  assert(NewSize > 0 && "CrossOver returned empty unit");
+  assert(NewSize <= MaxSize && "CrossOver returned overisized unit");
+  memcpy(Data, U.data(), NewSize);
+  return NewSize;
+}
+
+void MutationDispatcher::StartMutationSequence() {
+  CurrentMutatorSequence.clear();
+  CurrentDictionaryEntrySequence.clear();
+}
+
+// Copy successful dictionary entries to PersistentAutoDictionary.
+void MutationDispatcher::RecordSuccessfulMutationSequence() {
+  for (auto DE : CurrentDictionaryEntrySequence) {
+    // PersistentAutoDictionary.AddWithSuccessCountOne(DE);
+    DE->IncSuccessCount();
+    // Linear search is fine here as this happens seldom.
+    if (!PersistentAutoDictionary.ContainsWord(DE->GetW()))
+      PersistentAutoDictionary.push_back({DE->GetW(), 1});
+  }
+}
+
+void MutationDispatcher::PrintRecommendedDictionary() {
+  std::vector<DictionaryEntry> V;
+  for (auto &DE : PersistentAutoDictionary)
+    if (!ManualDictionary.ContainsWord(DE.GetW()))
+      V.push_back(DE);
+  if (V.empty()) return;
+  Printf("###### Recommended dictionary. ######\n");
+  for (auto &DE: V) {
+    Printf("\"");
+    PrintASCII(DE.GetW(), "\"");
+    Printf(" # Uses: %zd\n", DE.GetUseCount());
+  }
+  Printf("###### End of recommended dictionary. ######\n");
+}
+
+void MutationDispatcher::PrintMutationSequence() {
+  Printf("MS: %zd ", CurrentMutatorSequence.size());
+  for (auto M : CurrentMutatorSequence)
+    Printf("%s-", M.Name);
+  if (!CurrentDictionaryEntrySequence.empty()) {
+    Printf(" DE: ");
+    for (auto DE : CurrentDictionaryEntrySequence) {
+      Printf("\"");
+      PrintASCII(DE->GetW(), "\"-");
+    }
+  }
+}
+
+size_t MutationDispatcher::Mutate(uint8_t *Data, size_t Size, size_t MaxSize) {
+  return MutateImpl(Data, Size, MaxSize, Mutators);
+}
+
+size_t MutationDispatcher::DefaultMutate(uint8_t *Data, size_t Size,
+                                         size_t MaxSize) {
+  return MutateImpl(Data, Size, MaxSize, DefaultMutators);
+}
+
+// Mutates Data in place, returns new size.
+size_t MutationDispatcher::MutateImpl(uint8_t *Data, size_t Size,
+                                      size_t MaxSize,
+                                      const std::vector<Mutator> &Mutators) {
+  assert(MaxSize > 0);
+  if (Size == 0) {
+    for (size_t i = 0; i < MaxSize; i++)
+      Data[i] = RandCh(Rand);
+    if (Options.OnlyASCII)
+      ToASCII(Data, MaxSize);
+    return MaxSize;
+  }
+  assert(Size > 0);
+  // Some mutations may fail (e.g. can't insert more bytes if Size == MaxSize),
+  // in which case they will return 0.
+  // Try several times before returning un-mutated data.
+  for (int Iter = 0; Iter < 100; Iter++) {
+    auto M = Mutators[Rand(Mutators.size())];
+    size_t NewSize = (this->*(M.Fn))(Data, Size, MaxSize);
+    if (NewSize && NewSize <= MaxSize) {
+      if (Options.OnlyASCII)
+        ToASCII(Data, NewSize);
+      CurrentMutatorSequence.push_back(M);
+      return NewSize;
+    }
+  }
+  return std::min(Size, MaxSize);
+}
+
+void MutationDispatcher::AddWordToManualDictionary(const Word &W) {
+  ManualDictionary.push_back(
+      {W, std::numeric_limits<size_t>::max()});
+}
+
+void MutationDispatcher::AddWordToAutoDictionary(DictionaryEntry DE) {
+  static const size_t kMaxAutoDictSize = 1 << 14;
+  if (TempAutoDictionary.size() >= kMaxAutoDictSize) return;
+  TempAutoDictionary.push_back(DE);
+}
+
+void MutationDispatcher::ClearAutoDictionary() {
+  TempAutoDictionary.clear();
+}
+
+}  // namespace fuzzer
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMutate.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMutate.h
new file mode 100644
index 00000000..d3c0b001
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerMutate.h
@@ -0,0 +1,145 @@
+//===- FuzzerMutate.h - Internal header for the Fuzzer ----------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// fuzzer::MutationDispatcher
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_MUTATE_H
+#define LLVM_FUZZER_MUTATE_H
+
+#include "FuzzerDefs.h"
+#include "FuzzerDictionary.h"
+#include "FuzzerRandom.h"
+
+namespace fuzzer {
+
+class MutationDispatcher {
+public:
+  MutationDispatcher(Random &Rand, const FuzzingOptions &Options);
+  ~MutationDispatcher() {}
+  /// Indicate that we are about to start a new sequence of mutations.
+  void StartMutationSequence();
+  /// Print the current sequence of mutations.
+  void PrintMutationSequence();
+  /// Indicate that the current sequence of mutations was successfull.
+  void RecordSuccessfulMutationSequence();
+  /// Mutates data by invoking user-provided mutator.
+  size_t Mutate_Custom(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Mutates data by invoking user-provided crossover.
+  size_t Mutate_CustomCrossOver(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Mutates data by shuffling bytes.
+  size_t Mutate_ShuffleBytes(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Mutates data by erasing bytes.
+  size_t Mutate_EraseBytes(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Mutates data by inserting a byte.
+  size_t Mutate_InsertByte(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Mutates data by inserting several repeated bytes.
+  size_t Mutate_InsertRepeatedBytes(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Mutates data by chanding one byte.
+  size_t Mutate_ChangeByte(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Mutates data by chanding one bit.
+  size_t Mutate_ChangeBit(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Mutates data by copying/inserting a part of data into a different place.
+  size_t Mutate_CopyPart(uint8_t *Data, size_t Size, size_t MaxSize);
+
+  /// Mutates data by adding a word from the manual dictionary.
+  size_t Mutate_AddWordFromManualDictionary(uint8_t *Data, size_t Size,
+                                            size_t MaxSize);
+
+  /// Mutates data by adding a word from the temporary automatic dictionary.
+  size_t Mutate_AddWordFromTemporaryAutoDictionary(uint8_t *Data, size_t Size,
+                                                   size_t MaxSize);
+
+  /// Mutates data by adding a word from the TORC.
+  size_t Mutate_AddWordFromTORC(uint8_t *Data, size_t Size, size_t MaxSize);
+
+  /// Mutates data by adding a word from the persistent automatic dictionary.
+  size_t Mutate_AddWordFromPersistentAutoDictionary(uint8_t *Data, size_t Size,
+                                                    size_t MaxSize);
+
+  /// Tries to find an ASCII integer in Data, changes it to another ASCII int.
+  size_t Mutate_ChangeASCIIInteger(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Change a 1-, 2-, 4-, or 8-byte integer in interesting ways.
+  size_t Mutate_ChangeBinaryInteger(uint8_t *Data, size_t Size, size_t MaxSize);
+
+  /// CrossOver Data with some other element of the corpus.
+  size_t Mutate_CrossOver(uint8_t *Data, size_t Size, size_t MaxSize);
+
+  /// Applies one of the configured mutations.
+  /// Returns the new size of data which could be up to MaxSize.
+  size_t Mutate(uint8_t *Data, size_t Size, size_t MaxSize);
+  /// Applies one of the default mutations. Provided as a service
+  /// to mutation authors.
+  size_t DefaultMutate(uint8_t *Data, size_t Size, size_t MaxSize);
+
+  /// Creates a cross-over of two pieces of Data, returns its size.
+  size_t CrossOver(const uint8_t *Data1, size_t Size1, const uint8_t *Data2,
+                   size_t Size2, uint8_t *Out, size_t MaxOutSize);
+
+  void AddWordToManualDictionary(const Word &W);
+
+  void AddWordToAutoDictionary(DictionaryEntry DE);
+  void ClearAutoDictionary();
+  void PrintRecommendedDictionary();
+
+  void SetCorpus(const InputCorpus *Corpus) { this->Corpus = Corpus; }
+
+  Random &GetRand() { return Rand; }
+
+private:
+
+  struct Mutator {
+    size_t (MutationDispatcher::*Fn)(uint8_t *Data, size_t Size, size_t Max);
+    const char *Name;
+  };
+
+  size_t AddWordFromDictionary(Dictionary &D, uint8_t *Data, size_t Size,
+                               size_t MaxSize);
+  size_t MutateImpl(uint8_t *Data, size_t Size, size_t MaxSize,
+                    const std::vector<Mutator> &Mutators);
+
+  size_t InsertPartOf(const uint8_t *From, size_t FromSize, uint8_t *To,
+                      size_t ToSize, size_t MaxToSize);
+  size_t CopyPartOf(const uint8_t *From, size_t FromSize, uint8_t *To,
+                    size_t ToSize);
+  size_t ApplyDictionaryEntry(uint8_t *Data, size_t Size, size_t MaxSize,
+                              DictionaryEntry &DE);
+
+  template <class T>
+  DictionaryEntry MakeDictionaryEntryFromCMP(T Arg1, T Arg2,
+                                             const uint8_t *Data, size_t Size);
+
+  Random &Rand;
+  const FuzzingOptions &Options;
+
+  // Dictionary provided by the user via -dict=DICT_FILE.
+  Dictionary ManualDictionary;
+  // Temporary dictionary modified by the fuzzer itself,
+  // recreated periodically.
+  Dictionary TempAutoDictionary;
+  // Persistent dictionary modified by the fuzzer, consists of
+  // entries that led to successfull discoveries in the past mutations.
+  Dictionary PersistentAutoDictionary;
+
+  std::vector<Mutator> CurrentMutatorSequence;
+  std::vector<DictionaryEntry *> CurrentDictionaryEntrySequence;
+
+  static const size_t kCmpDictionaryEntriesDequeSize = 16;
+  DictionaryEntry CmpDictionaryEntriesDeque[kCmpDictionaryEntriesDequeSize];
+  size_t CmpDictionaryEntriesDequeIdx = 0;
+
+  const InputCorpus *Corpus = nullptr;
+  std::vector<uint8_t> MutateInPlaceHere;
+
+  std::vector<Mutator> Mutators;
+  std::vector<Mutator> DefaultMutators;
+};
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_MUTATE_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerOptions.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerOptions.h
new file mode 100644
index 00000000..34e93fc3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerOptions.h
@@ -0,0 +1,68 @@
+//===- FuzzerOptions.h - Internal header for the Fuzzer ---------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// fuzzer::FuzzingOptions
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_OPTIONS_H
+#define LLVM_FUZZER_OPTIONS_H
+
+#include "FuzzerDefs.h"
+
+namespace fuzzer {
+
+struct FuzzingOptions {
+  int Verbosity = 1;
+  size_t MaxLen = 0;
+  int UnitTimeoutSec = 300;
+  int TimeoutExitCode = 77;
+  int ErrorExitCode = 77;
+  int MaxTotalTimeSec = 0;
+  int RssLimitMb = 0;
+  bool DoCrossOver = true;
+  int MutateDepth = 5;
+  bool UseCounters = false;
+  bool UseIndirCalls = true;
+  bool UseMemcmp = true;
+  bool UseMemmem = true;
+  bool UseCmp = false;
+  bool UseValueProfile = false;
+  bool Shrink = false;
+  int ReloadIntervalSec = 1;
+  bool ShuffleAtStartUp = true;
+  bool PreferSmall = true;
+  size_t MaxNumberOfRuns = -1L;
+  int ReportSlowUnits = 10;
+  bool OnlyASCII = false;
+  std::string OutputCorpus;
+  std::string ArtifactPrefix = "./";
+  std::string ExactArtifactPath;
+  std::string ExitOnSrcPos;
+  std::string ExitOnItem;
+  bool SaveArtifacts = true;
+  bool PrintNEW = true; // Print a status line when new units are found;
+  bool OutputCSV = false;
+  bool PrintNewCovPcs = false;
+  bool PrintFinalStats = false;
+  bool PrintCorpusStats = false;
+  bool PrintCoverage = false;
+  bool DumpCoverage = false;
+  bool DetectLeaks = true;
+  int  TraceMalloc = 0;
+  bool HandleAbrt = false;
+  bool HandleBus = false;
+  bool HandleFpe = false;
+  bool HandleIll = false;
+  bool HandleInt = false;
+  bool HandleSegv = false;
+  bool HandleTerm = false;
+};
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_OPTIONS_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerRandom.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerRandom.h
new file mode 100644
index 00000000..b1be0bb9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerRandom.h
@@ -0,0 +1,36 @@
+//===- FuzzerRandom.h - Internal header for the Fuzzer ----------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// fuzzer::Random
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_RANDOM_H
+#define LLVM_FUZZER_RANDOM_H
+
+#include <random>
+
+namespace fuzzer {
+class Random {
+ public:
+  Random(unsigned int seed) : R(seed) {}
+  size_t Rand() { return R(); }
+  size_t RandBool() { return Rand() % 2; }
+  size_t operator()(size_t n) { return n ? Rand() % n : 0; }
+  intptr_t operator()(intptr_t From, intptr_t To) {
+    assert(From < To);
+    intptr_t RangeSize = To - From + 1;
+    return operator()(RangeSize) + From;
+  }
+  std::mt19937 &Get_mt19937() { return R; }
+ private:
+  std::mt19937 R;
+};
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_RANDOM_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerSHA1.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerSHA1.cpp
new file mode 100644
index 00000000..d2f8e811
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerSHA1.cpp
@@ -0,0 +1,222 @@
+//===- FuzzerSHA1.h - Private copy of the SHA1 implementation ---*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// This code is taken from public domain
+// (http://oauth.googlecode.com/svn/code/c/liboauth/src/sha1.c)
+// and modified by adding anonymous namespace, adding an interface
+// function fuzzer::ComputeSHA1() and removing unnecessary code.
+//
+// lib/Fuzzer can not use SHA1 implementation from openssl because
+// openssl may not be available and because we may be fuzzing openssl itself.
+// For the same reason we do not want to depend on SHA1 from LLVM tree.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerSHA1.h"
+#include "FuzzerDefs.h"
+
+/* This code is public-domain - it is based on libcrypt
+ * placed in the public domain by Wei Dai and other contributors.
+ */
+
+#include <iomanip>
+#include <sstream>
+#include <stdint.h>
+#include <string.h>
+
+namespace {  // Added for LibFuzzer
+
+#ifdef __BIG_ENDIAN__
+# define SHA_BIG_ENDIAN
+#elif defined __LITTLE_ENDIAN__
+/* override */
+#elif defined __BYTE_ORDER
+# if __BYTE_ORDER__ ==  __ORDER_BIG_ENDIAN__
+# define SHA_BIG_ENDIAN
+# endif
+#else // ! defined __LITTLE_ENDIAN__
+# include <endian.h> // machine/endian.h
+# if __BYTE_ORDER__ ==  __ORDER_BIG_ENDIAN__
+#  define SHA_BIG_ENDIAN
+# endif
+#endif
+
+
+/* header */
+
+#define HASH_LENGTH 20
+#define BLOCK_LENGTH 64
+
+typedef struct sha1nfo {
+	uint32_t buffer[BLOCK_LENGTH/4];
+	uint32_t state[HASH_LENGTH/4];
+	uint32_t byteCount;
+	uint8_t bufferOffset;
+	uint8_t keyBuffer[BLOCK_LENGTH];
+	uint8_t innerHash[HASH_LENGTH];
+} sha1nfo;
+
+/* public API - prototypes - TODO: doxygen*/
+
+/**
+ */
+void sha1_init(sha1nfo *s);
+/**
+ */
+void sha1_writebyte(sha1nfo *s, uint8_t data);
+/**
+ */
+void sha1_write(sha1nfo *s, const char *data, size_t len);
+/**
+ */
+uint8_t* sha1_result(sha1nfo *s);
+
+
+/* code */
+#define SHA1_K0  0x5a827999
+#define SHA1_K20 0x6ed9eba1
+#define SHA1_K40 0x8f1bbcdc
+#define SHA1_K60 0xca62c1d6
+
+void sha1_init(sha1nfo *s) {
+	s->state[0] = 0x67452301;
+	s->state[1] = 0xefcdab89;
+	s->state[2] = 0x98badcfe;
+	s->state[3] = 0x10325476;
+	s->state[4] = 0xc3d2e1f0;
+	s->byteCount = 0;
+	s->bufferOffset = 0;
+}
+
+uint32_t sha1_rol32(uint32_t number, uint8_t bits) {
+	return ((number << bits) | (number >> (32-bits)));
+}
+
+void sha1_hashBlock(sha1nfo *s) {
+	uint8_t i;
+	uint32_t a,b,c,d,e,t;
+
+	a=s->state[0];
+	b=s->state[1];
+	c=s->state[2];
+	d=s->state[3];
+	e=s->state[4];
+	for (i=0; i<80; i++) {
+		if (i>=16) {
+			t = s->buffer[(i+13)&15] ^ s->buffer[(i+8)&15] ^ s->buffer[(i+2)&15] ^ s->buffer[i&15];
+			s->buffer[i&15] = sha1_rol32(t,1);
+		}
+		if (i<20) {
+			t = (d ^ (b & (c ^ d))) + SHA1_K0;
+		} else if (i<40) {
+			t = (b ^ c ^ d) + SHA1_K20;
+		} else if (i<60) {
+			t = ((b & c) | (d & (b | c))) + SHA1_K40;
+		} else {
+			t = (b ^ c ^ d) + SHA1_K60;
+		}
+		t+=sha1_rol32(a,5) + e + s->buffer[i&15];
+		e=d;
+		d=c;
+		c=sha1_rol32(b,30);
+		b=a;
+		a=t;
+	}
+	s->state[0] += a;
+	s->state[1] += b;
+	s->state[2] += c;
+	s->state[3] += d;
+	s->state[4] += e;
+}
+
+void sha1_addUncounted(sha1nfo *s, uint8_t data) {
+	uint8_t * const b = (uint8_t*) s->buffer;
+#ifdef SHA_BIG_ENDIAN
+	b[s->bufferOffset] = data;
+#else
+	b[s->bufferOffset ^ 3] = data;
+#endif
+	s->bufferOffset++;
+	if (s->bufferOffset == BLOCK_LENGTH) {
+		sha1_hashBlock(s);
+		s->bufferOffset = 0;
+	}
+}
+
+void sha1_writebyte(sha1nfo *s, uint8_t data) {
+	++s->byteCount;
+	sha1_addUncounted(s, data);
+}
+
+void sha1_write(sha1nfo *s, const char *data, size_t len) {
+	for (;len--;) sha1_writebyte(s, (uint8_t) *data++);
+}
+
+void sha1_pad(sha1nfo *s) {
+	// Implement SHA-1 padding (fips180-2 §5.1.1)
+
+	// Pad with 0x80 followed by 0x00 until the end of the block
+	sha1_addUncounted(s, 0x80);
+	while (s->bufferOffset != 56) sha1_addUncounted(s, 0x00);
+
+	// Append length in the last 8 bytes
+	sha1_addUncounted(s, 0); // We're only using 32 bit lengths
+	sha1_addUncounted(s, 0); // But SHA-1 supports 64 bit lengths
+	sha1_addUncounted(s, 0); // So zero pad the top bits
+	sha1_addUncounted(s, s->byteCount >> 29); // Shifting to multiply by 8
+	sha1_addUncounted(s, s->byteCount >> 21); // as SHA-1 supports bitstreams as well as
+	sha1_addUncounted(s, s->byteCount >> 13); // byte.
+	sha1_addUncounted(s, s->byteCount >> 5);
+	sha1_addUncounted(s, s->byteCount << 3);
+}
+
+uint8_t* sha1_result(sha1nfo *s) {
+	// Pad to complete the last block
+	sha1_pad(s);
+
+#ifndef SHA_BIG_ENDIAN
+	// Swap byte order back
+	int i;
+	for (i=0; i<5; i++) {
+		s->state[i]=
+			  (((s->state[i])<<24)& 0xff000000)
+			| (((s->state[i])<<8) & 0x00ff0000)
+			| (((s->state[i])>>8) & 0x0000ff00)
+			| (((s->state[i])>>24)& 0x000000ff);
+	}
+#endif
+
+	// Return pointer to hash (20 characters)
+	return (uint8_t*) s->state;
+}
+
+}  // namespace; Added for LibFuzzer
+
+namespace fuzzer {
+
+// The rest is added for LibFuzzer
+void ComputeSHA1(const uint8_t *Data, size_t Len, uint8_t *Out) {
+  sha1nfo s;
+  sha1_init(&s);
+  sha1_write(&s, (const char*)Data, Len);
+  memcpy(Out, sha1_result(&s), HASH_LENGTH);
+}
+
+std::string Sha1ToString(const uint8_t Sha1[kSHA1NumBytes]) {
+  std::stringstream SS;
+  for (int i = 0; i < kSHA1NumBytes; i++)
+    SS << std::hex << std::setfill('0') << std::setw(2) << (unsigned)Sha1[i];
+  return SS.str();
+}
+
+std::string Hash(const Unit &U) {
+  uint8_t Hash[kSHA1NumBytes];
+  ComputeSHA1(U.data(), U.size(), Hash);
+  return Sha1ToString(Hash);
+}
+
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerSHA1.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerSHA1.h
new file mode 100644
index 00000000..3b5e6e80
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerSHA1.h
@@ -0,0 +1,33 @@
+//===- FuzzerSHA1.h - Internal header for the SHA1 utils --------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// SHA1 utils.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_SHA1_H
+#define LLVM_FUZZER_SHA1_H
+
+#include "FuzzerDefs.h"
+#include <cstddef>
+#include <stdint.h>
+
+namespace fuzzer {
+
+// Private copy of SHA1 implementation.
+static const int kSHA1NumBytes = 20;
+
+// Computes SHA1 hash of 'Len' bytes in 'Data', writes kSHA1NumBytes to 'Out'.
+void ComputeSHA1(const uint8_t *Data, size_t Len, uint8_t *Out);
+
+std::string Sha1ToString(const uint8_t Sha1[kSHA1NumBytes]);
+
+std::string Hash(const Unit &U);
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_SHA1_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTracePC.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTracePC.cpp
new file mode 100644
index 00000000..81c084b5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTracePC.cpp
@@ -0,0 +1,339 @@
+//===- FuzzerTracePC.cpp - PC tracing--------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Trace PCs.
+// This module implements __sanitizer_cov_trace_pc_guard[_init],
+// the callback required for -fsanitize-coverage=trace-pc-guard instrumentation.
+//
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerCorpus.h"
+#include "FuzzerDefs.h"
+#include "FuzzerDictionary.h"
+#include "FuzzerExtFunctions.h"
+#include "FuzzerIO.h"
+#include "FuzzerTracePC.h"
+#include "FuzzerValueBitMap.h"
+#include <map>
+#include <sanitizer/coverage_interface.h>
+#include <set>
+#include <sstream>
+
+namespace fuzzer {
+
+TracePC TPC;
+
+void TracePC::HandleTrace(uint32_t *Guard, uintptr_t PC) {
+  uint32_t Idx = *Guard;
+  if (!Idx) return;
+  PCs[Idx % kNumPCs] = PC;
+  Counters[Idx % kNumCounters]++;
+}
+
+size_t TracePC::GetTotalPCCoverage() {
+  size_t Res = 0;
+  for (size_t i = 1; i < GetNumPCs(); i++)
+    if (PCs[i])
+      Res++;
+  return Res;
+}
+
+void TracePC::HandleInit(uint32_t *Start, uint32_t *Stop) {
+  if (Start == Stop || *Start) return;
+  assert(NumModules < sizeof(Modules) / sizeof(Modules[0]));
+  for (uint32_t *P = Start; P < Stop; P++)
+    *P = ++NumGuards;
+  Modules[NumModules].Start = Start;
+  Modules[NumModules].Stop = Stop;
+  NumModules++;
+}
+
+void TracePC::PrintModuleInfo() {
+  Printf("INFO: Loaded %zd modules (%zd guards): ", NumModules, NumGuards);
+  for (size_t i = 0; i < NumModules; i++)
+    Printf("[%p, %p), ", Modules[i].Start, Modules[i].Stop);
+  Printf("\n");
+}
+
+void TracePC::HandleCallerCallee(uintptr_t Caller, uintptr_t Callee) {
+  const uintptr_t kBits = 12;
+  const uintptr_t kMask = (1 << kBits) - 1;
+  uintptr_t Idx = (Caller & kMask) | ((Callee & kMask) << kBits);
+  HandleValueProfile(Idx);
+}
+
+static bool IsInterestingCoverageFile(std::string &File) {
+  if (File.find("compiler-rt/lib/") != std::string::npos)
+    return false; // sanitizer internal.
+  if (File.find("/usr/lib/") != std::string::npos)
+    return false;
+  if (File.find("/usr/include/") != std::string::npos)
+    return false;
+  if (File == "<null>")
+    return false;
+  return true;
+}
+
+void TracePC::PrintNewPCs() {
+  if (DoPrintNewPCs) {
+    if (!PrintedPCs)
+      PrintedPCs = new std::set<uintptr_t>;
+    for (size_t i = 1; i < GetNumPCs(); i++)
+      if (PCs[i] && PrintedPCs->insert(PCs[i]).second)
+        PrintPC("\tNEW_PC: %p %F %L\n", "\tNEW_PC: %p\n", PCs[i]);
+  }
+}
+
+void TracePC::PrintCoverage() {
+  if (!EF->__sanitizer_symbolize_pc ||
+      !EF->__sanitizer_get_module_and_offset_for_pc) {
+    Printf("INFO: __sanitizer_symbolize_pc or "
+           "__sanitizer_get_module_and_offset_for_pc is not available,"
+           " not printing coverage\n");
+    return;
+  }
+  std::map<std::string, std::vector<uintptr_t>> CoveredPCsPerModule;
+  std::map<std::string, uintptr_t> ModuleOffsets;
+  std::set<std::string> CoveredDirs, CoveredFiles, CoveredFunctions,
+      CoveredLines;
+  Printf("COVERAGE:\n");
+  for (size_t i = 1; i < GetNumPCs(); i++) {
+    if (!PCs[i]) continue;
+    std::string FileStr = DescribePC("%s", PCs[i]);
+    if (!IsInterestingCoverageFile(FileStr)) continue;
+    std::string FixedPCStr = DescribePC("%p", PCs[i]);
+    std::string FunctionStr = DescribePC("%F", PCs[i]);
+    std::string LineStr = DescribePC("%l", PCs[i]);
+    char ModulePathRaw[4096] = "";  // What's PATH_MAX in portable C++?
+    void *OffsetRaw = nullptr;
+    if (!EF->__sanitizer_get_module_and_offset_for_pc(
+            reinterpret_cast<void *>(PCs[i]), ModulePathRaw,
+            sizeof(ModulePathRaw), &OffsetRaw))
+      continue;
+    std::string Module = ModulePathRaw;
+    uintptr_t FixedPC = std::stol(FixedPCStr, 0, 16);
+    uintptr_t PcOffset = reinterpret_cast<uintptr_t>(OffsetRaw);
+    ModuleOffsets[Module] = FixedPC - PcOffset;
+    CoveredPCsPerModule[Module].push_back(PcOffset);
+    CoveredFunctions.insert(FunctionStr);
+    CoveredFiles.insert(FileStr);
+    CoveredDirs.insert(DirName(FileStr));
+    if (!CoveredLines.insert(FileStr + ":" + LineStr).second)
+      continue;
+    Printf("COVERED: %s %s:%s\n", FunctionStr.c_str(),
+           FileStr.c_str(), LineStr.c_str());
+  }
+
+  std::string CoveredDirsStr;
+  for (auto &Dir : CoveredDirs) {
+    if (!CoveredDirsStr.empty())
+      CoveredDirsStr += ",";
+    CoveredDirsStr += Dir;
+  }
+  Printf("COVERED_DIRS: %s\n", CoveredDirsStr.c_str());
+
+  for (auto &M : CoveredPCsPerModule) {
+    std::set<std::string> UncoveredFiles, UncoveredFunctions;
+    std::map<std::string, std::set<int> > UncoveredLines;  // Func+File => lines
+    auto &ModuleName = M.first;
+    auto &CoveredOffsets = M.second;
+    uintptr_t ModuleOffset = ModuleOffsets[ModuleName];
+    std::sort(CoveredOffsets.begin(), CoveredOffsets.end());
+    Printf("MODULE_WITH_COVERAGE: %s\n", ModuleName.c_str());
+    // sancov does not yet fully support DSOs.
+    // std::string Cmd = "sancov -print-coverage-pcs " + ModuleName;
+    std::string Cmd = "objdump -d " + ModuleName +
+        " | grep 'call.*__sanitizer_cov_trace_pc_guard' | awk -F: '{print $1}'";
+    std::string SanCovOutput;
+    if (!ExecuteCommandAndReadOutput(Cmd, &SanCovOutput)) {
+      Printf("INFO: Command failed: %s\n", Cmd.c_str());
+      continue;
+    }
+    std::istringstream ISS(SanCovOutput);
+    std::string S;
+    while (std::getline(ISS, S, '\n')) {
+      uintptr_t PcOffset = std::stol(S, 0, 16);
+      if (!std::binary_search(CoveredOffsets.begin(), CoveredOffsets.end(),
+                              PcOffset)) {
+        uintptr_t PC = ModuleOffset + PcOffset;
+        auto FileStr = DescribePC("%s", PC);
+        if (!IsInterestingCoverageFile(FileStr)) continue;
+        if (CoveredFiles.count(FileStr) == 0) {
+          UncoveredFiles.insert(FileStr);
+          continue;
+        }
+        auto FunctionStr = DescribePC("%F", PC);
+        if (CoveredFunctions.count(FunctionStr) == 0) {
+          UncoveredFunctions.insert(FunctionStr);
+          continue;
+        }
+        std::string LineStr = DescribePC("%l", PC);
+        uintptr_t Line = std::stoi(LineStr);
+        std::string FileLineStr = FileStr + ":" + LineStr;
+        if (CoveredLines.count(FileLineStr) == 0)
+          UncoveredLines[FunctionStr + " " + FileStr].insert(Line);
+      }
+    }
+    for (auto &FileLine: UncoveredLines)
+      for (int Line : FileLine.second)
+        Printf("UNCOVERED_LINE: %s:%d\n", FileLine.first.c_str(), Line);
+    for (auto &Func : UncoveredFunctions)
+      Printf("UNCOVERED_FUNC: %s\n", Func.c_str());
+    for (auto &File : UncoveredFiles)
+      Printf("UNCOVERED_FILE: %s\n", File.c_str());
+  }
+}
+
+void TracePC::DumpCoverage() {
+  __sanitizer_dump_coverage(PCs, GetNumPCs());
+}
+
+// Value profile.
+// We keep track of various values that affect control flow.
+// These values are inserted into a bit-set-based hash map.
+// Every new bit in the map is treated as a new coverage.
+//
+// For memcmp/strcmp/etc the interesting value is the length of the common
+// prefix of the parameters.
+// For cmp instructions the interesting value is a XOR of the parameters.
+// The interesting value is mixed up with the PC and is then added to the map.
+
+ATTRIBUTE_NO_SANITIZE_MEMORY
+void TracePC::AddValueForMemcmp(void *caller_pc, const void *s1, const void *s2,
+                              size_t n) {
+  if (!n) return;
+  size_t Len = std::min(n, (size_t)32);
+  const uint8_t *A1 = reinterpret_cast<const uint8_t *>(s1);
+  const uint8_t *A2 = reinterpret_cast<const uint8_t *>(s2);
+  size_t I = 0;
+  for (; I < Len; I++)
+    if (A1[I] != A2[I])
+      break;
+  size_t PC = reinterpret_cast<size_t>(caller_pc);
+  size_t Idx = I;
+  // if (I < Len)
+  //  Idx += __builtin_popcountl((A1[I] ^ A2[I])) - 1;
+  TPC.HandleValueProfile((PC & 4095) | (Idx << 12));
+}
+
+ATTRIBUTE_NO_SANITIZE_MEMORY
+void TracePC::AddValueForStrcmp(void *caller_pc, const char *s1, const char *s2,
+                              size_t n) {
+  if (!n) return;
+  size_t Len = std::min(n, (size_t)32);
+  const uint8_t *A1 = reinterpret_cast<const uint8_t *>(s1);
+  const uint8_t *A2 = reinterpret_cast<const uint8_t *>(s2);
+  size_t I = 0;
+  for (; I < Len; I++)
+    if (A1[I] != A2[I] || A1[I] == 0)
+      break;
+  size_t PC = reinterpret_cast<size_t>(caller_pc);
+  size_t Idx = I;
+  // if (I < Len && A1[I])
+  //  Idx += __builtin_popcountl((A1[I] ^ A2[I])) - 1;
+  TPC.HandleValueProfile((PC & 4095) | (Idx << 12));
+}
+
+template <class T>
+ATTRIBUTE_TARGET_POPCNT
+#ifdef __clang__  // g++ can't handle this __attribute__ here :(
+__attribute__((always_inline))
+#endif  // __clang__
+void TracePC::HandleCmp(void *PC, T Arg1, T Arg2) {
+  uintptr_t PCuint = reinterpret_cast<uintptr_t>(PC);
+  uint64_t ArgXor = Arg1 ^ Arg2;
+  uint64_t ArgDistance = __builtin_popcountl(ArgXor) + 1; // [1,65]
+  uintptr_t Idx = ((PCuint & 4095) + 1) * ArgDistance;
+  if (sizeof(T) == 4)
+      TORC4.Insert(ArgXor, Arg1, Arg2);
+  else if (sizeof(T) == 8)
+      TORC8.Insert(ArgXor, Arg1, Arg2);
+  HandleValueProfile(Idx);
+}
+
+} // namespace fuzzer
+
+extern "C" {
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_pc_guard(uint32_t *Guard) {
+  uintptr_t PC = (uintptr_t)__builtin_return_address(0);
+  fuzzer::TPC.HandleTrace(Guard, PC);
+}
+
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_pc_guard_init(uint32_t *Start, uint32_t *Stop) {
+  fuzzer::TPC.HandleInit(Start, Stop);
+}
+
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_pc_indir(uintptr_t Callee) {
+  uintptr_t PC = (uintptr_t)__builtin_return_address(0);
+  fuzzer::TPC.HandleCallerCallee(PC, Callee);
+}
+
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_cmp8(uint64_t Arg1, uint64_t Arg2) {
+  fuzzer::TPC.HandleCmp(__builtin_return_address(0), Arg1, Arg2);
+}
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_cmp4(uint32_t Arg1, uint32_t Arg2) {
+  fuzzer::TPC.HandleCmp(__builtin_return_address(0), Arg1, Arg2);
+}
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_cmp2(uint16_t Arg1, uint16_t Arg2) {
+  fuzzer::TPC.HandleCmp(__builtin_return_address(0), Arg1, Arg2);
+}
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_cmp1(uint8_t Arg1, uint8_t Arg2) {
+  fuzzer::TPC.HandleCmp(__builtin_return_address(0), Arg1, Arg2);
+}
+
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_switch(uint64_t Val, uint64_t *Cases) {
+  // Updates the value profile based on the relative position of Val and Cases.
+  // We want to handle one random case at every call (handling all is slow).
+  // Since none of the arguments contain any random bits we use a thread-local
+  // counter to choose the random case to handle.
+  static thread_local size_t Counter;
+  Counter++;
+  uint64_t N = Cases[0];
+  uint64_t *Vals = Cases + 2;
+  char *PC = (char*)__builtin_return_address(0);
+  // We need a random number < N using Counter as a seed. But w/o DIV.
+  // * find a power of two >= N
+  // * mask Counter with this power of two.
+  // * maybe subtract N.
+  size_t Nlog = sizeof(long) * 8 - __builtin_clzl((long)N);
+  size_t PowerOfTwoGeN = 1U << Nlog;
+  assert(PowerOfTwoGeN >= N);
+  size_t Idx = Counter & (PowerOfTwoGeN - 1);
+  if (Idx >= N)
+    Idx -= N;
+  assert(Idx < N);
+  uint64_t TwoIn32 = 1ULL << 32;
+  if ((Val | Vals[Idx]) < TwoIn32)
+    fuzzer::TPC.HandleCmp(PC + Idx, static_cast<uint32_t>(Val),
+                          static_cast<uint32_t>(Vals[Idx]));
+  else
+    fuzzer::TPC.HandleCmp(PC + Idx, Val, Vals[Idx]);
+}
+
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_div4(uint32_t Val) {
+  fuzzer::TPC.HandleCmp(__builtin_return_address(0), Val, (uint32_t)0);
+}
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_div8(uint64_t Val) {
+  fuzzer::TPC.HandleCmp(__builtin_return_address(0), Val, (uint64_t)0);
+}
+__attribute__((visibility("default")))
+void __sanitizer_cov_trace_gep(uintptr_t Idx) {
+  fuzzer::TPC.HandleCmp(__builtin_return_address(0), Idx, (uintptr_t)0);
+}
+
+}  // extern "C"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTracePC.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTracePC.h
new file mode 100644
index 00000000..68827f80
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTracePC.h
@@ -0,0 +1,158 @@
+//===- FuzzerTracePC.h - Internal header for the Fuzzer ---------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// fuzzer::TracePC
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_TRACE_PC
+#define LLVM_FUZZER_TRACE_PC
+
+#include "FuzzerDefs.h"
+#include "FuzzerValueBitMap.h"
+#include <set>
+
+namespace fuzzer {
+
+// TableOfRecentCompares (TORC) remembers the most recently performed
+// comparisons of type T.
+// We record the arguments of CMP instructions in this table unconditionally
+// because it seems cheaper this way than to compute some expensive
+// conditions inside __sanitizer_cov_trace_cmp*.
+// After the unit has been executed we may decide to use the contents of
+// this table to populate a Dictionary.
+template<class T, size_t kSizeT>
+struct TableOfRecentCompares {
+  static const size_t kSize = kSizeT;
+  struct Pair {
+    T A, B;
+  };
+  void Insert(size_t Idx, T Arg1, T Arg2) {
+    Idx = Idx % kSize;
+    Table[Idx].A = Arg1;
+    Table[Idx].B = Arg2;
+  }
+
+  Pair Get(size_t I) { return Table[I % kSize]; }
+
+  Pair Table[kSize];
+};
+
+class TracePC {
+ public:
+  static const size_t kFeatureSetSize = ValueBitMap::kNumberOfItems;
+
+  void HandleTrace(uint32_t *guard, uintptr_t PC);
+  void HandleInit(uint32_t *start, uint32_t *stop);
+  void HandleCallerCallee(uintptr_t Caller, uintptr_t Callee);
+  void HandleValueProfile(size_t Value) { ValueProfileMap.AddValue(Value); }
+  template <class T> void HandleCmp(void *PC, T Arg1, T Arg2);
+  size_t GetTotalPCCoverage();
+  void SetUseCounters(bool UC) { UseCounters = UC; }
+  void SetUseValueProfile(bool VP) { UseValueProfile = VP; }
+  void SetPrintNewPCs(bool P) { DoPrintNewPCs = P; }
+  template <class Callback> size_t CollectFeatures(Callback CB);
+  bool UpdateValueProfileMap(ValueBitMap *MaxValueProfileMap) {
+    return UseValueProfile && MaxValueProfileMap->MergeFrom(ValueProfileMap);
+  }
+
+  void ResetMaps() {
+    ValueProfileMap.Reset();
+    memset(Counters, 0, sizeof(Counters));
+  }
+
+  void UpdateFeatureSet(size_t CurrentElementIdx, size_t CurrentElementSize);
+  void PrintFeatureSet();
+
+  void PrintModuleInfo();
+
+  void PrintCoverage();
+  void DumpCoverage();
+
+  void AddValueForMemcmp(void *caller_pc, const void *s1, const void *s2,
+                         size_t n);
+  void AddValueForStrcmp(void *caller_pc, const char *s1, const char *s2,
+                         size_t n);
+
+  bool UsingTracePcGuard() const {return NumModules; }
+
+  static const size_t kTORCSize = 1 << 5;
+  TableOfRecentCompares<uint32_t, kTORCSize> TORC4;
+  TableOfRecentCompares<uint64_t, kTORCSize> TORC8;
+
+  void PrintNewPCs();
+  size_t GetNumPCs() const { return Min(kNumPCs, NumGuards + 1); }
+  uintptr_t GetPC(size_t Idx) {
+    assert(Idx < GetNumPCs());
+    return PCs[Idx];
+  }
+
+private:
+  bool UseCounters = false;
+  bool UseValueProfile = false;
+  bool DoPrintNewPCs = false;
+
+  struct Module {
+    uint32_t *Start, *Stop;
+  };
+
+  Module Modules[4096];
+  size_t NumModules;  // linker-initialized.
+  size_t NumGuards;  // linker-initialized.
+
+  static const size_t kNumCounters = 1 << 14;
+  alignas(8) uint8_t Counters[kNumCounters];
+
+  static const size_t kNumPCs = 1 << 24;
+  uintptr_t PCs[kNumPCs];
+
+  std::set<uintptr_t> *PrintedPCs;
+
+  ValueBitMap ValueProfileMap;
+};
+
+template <class Callback>
+size_t TracePC::CollectFeatures(Callback CB) {
+  if (!UsingTracePcGuard()) return 0;
+  size_t Res = 0;
+  const size_t Step = 8;
+  assert(reinterpret_cast<uintptr_t>(Counters) % Step == 0);
+  size_t N = Min(kNumCounters, NumGuards + 1);
+  N = (N + Step - 1) & ~(Step - 1);  // Round up.
+  for (size_t Idx = 0; Idx < N; Idx += Step) {
+    uint64_t Bundle = *reinterpret_cast<uint64_t*>(&Counters[Idx]);
+    if (!Bundle) continue;
+    for (size_t i = Idx; i < Idx + Step; i++) {
+      uint8_t Counter = (Bundle >> ((i - Idx) * 8)) & 0xff;
+      if (!Counter) continue;
+      Counters[i] = 0;
+      unsigned Bit = 0;
+      /**/ if (Counter >= 128) Bit = 7;
+      else if (Counter >= 32) Bit = 6;
+      else if (Counter >= 16) Bit = 5;
+      else if (Counter >= 8) Bit = 4;
+      else if (Counter >= 4) Bit = 3;
+      else if (Counter >= 3) Bit = 2;
+      else if (Counter >= 2) Bit = 1;
+      size_t Feature = (i * 8 + Bit);
+      if (CB(Feature))
+        Res++;
+    }
+  }
+  if (UseValueProfile)
+    ValueProfileMap.ForEach([&](size_t Idx) {
+      if (CB(NumGuards * 8 + Idx))
+        Res++;
+    });
+  return Res;
+}
+
+extern TracePC TPC;
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_TRACE_PC
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTraceState.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTraceState.cpp
new file mode 100644
index 00000000..be62a662
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerTraceState.cpp
@@ -0,0 +1,325 @@
+//===- FuzzerTraceState.cpp - Trace-based fuzzer mutator ------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Data tracing.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerDictionary.h"
+#include "FuzzerInternal.h"
+#include "FuzzerIO.h"
+#include "FuzzerMutate.h"
+#include "FuzzerRandom.h"
+#include "FuzzerTracePC.h"
+#include <algorithm>
+#include <cstring>
+#include <map>
+#include <set>
+#include <thread>
+
+namespace fuzzer {
+
+// For now, very simple: put Size bytes of Data at position Pos.
+struct TraceBasedMutation {
+  uint32_t Pos;
+  Word W;
+};
+
+// Declared as static globals for faster checks inside the hooks.
+static bool RecordingMemcmp = false;
+static bool RecordingMemmem = false;
+static bool DoingMyOwnMemmem = false;
+
+ScopedDoingMyOwnMemmem::ScopedDoingMyOwnMemmem() { DoingMyOwnMemmem = true; }
+ScopedDoingMyOwnMemmem::~ScopedDoingMyOwnMemmem() { DoingMyOwnMemmem = false; }
+
+class TraceState {
+public:
+  TraceState(MutationDispatcher &MD, const FuzzingOptions &Options,
+             const Fuzzer *F)
+      : MD(MD), Options(Options), F(F) {}
+
+  void TraceMemcmpCallback(size_t CmpSize, const uint8_t *Data1,
+                           const uint8_t *Data2);
+
+  void TraceSwitchCallback(uintptr_t PC, size_t ValSizeInBits, uint64_t Val,
+                           size_t NumCases, uint64_t *Cases);
+  int TryToAddDesiredData(uint64_t PresentData, uint64_t DesiredData,
+                          size_t DataSize);
+  int TryToAddDesiredData(const uint8_t *PresentData,
+                          const uint8_t *DesiredData, size_t DataSize);
+
+  void StartTraceRecording() {
+    if (!Options.UseMemcmp)
+      return;
+    RecordingMemcmp = Options.UseMemcmp;
+    RecordingMemmem = Options.UseMemmem;
+    NumMutations = 0;
+    InterestingWords.clear();
+    MD.ClearAutoDictionary();
+  }
+
+  void StopTraceRecording() {
+    if (!RecordingMemcmp)
+      return;
+    RecordingMemcmp = false;
+    for (size_t i = 0; i < NumMutations; i++) {
+      auto &M = Mutations[i];
+      if (Options.Verbosity >= 2) {
+        AutoDictUnitCounts[M.W]++;
+        AutoDictAdds++;
+        if ((AutoDictAdds & (AutoDictAdds - 1)) == 0) {
+          typedef std::pair<size_t, Word> CU;
+          std::vector<CU> CountedUnits;
+          for (auto &I : AutoDictUnitCounts)
+            CountedUnits.push_back(std::make_pair(I.second, I.first));
+          std::sort(CountedUnits.begin(), CountedUnits.end(),
+                    [](const CU &a, const CU &b) { return a.first > b.first; });
+          Printf("AutoDict:\n");
+          for (auto &I : CountedUnits) {
+            Printf("   %zd ", I.first);
+            PrintASCII(I.second.data(), I.second.size());
+            Printf("\n");
+          }
+        }
+      }
+      MD.AddWordToAutoDictionary({M.W, M.Pos});
+    }
+    for (auto &W : InterestingWords)
+      MD.AddWordToAutoDictionary({W});
+  }
+
+  void AddMutation(uint32_t Pos, uint32_t Size, const uint8_t *Data) {
+    if (NumMutations >= kMaxMutations) return;
+    auto &M = Mutations[NumMutations++];
+    M.Pos = Pos;
+    M.W.Set(Data, Size);
+  }
+
+  void AddMutation(uint32_t Pos, uint32_t Size, uint64_t Data) {
+    assert(Size <= sizeof(Data));
+    AddMutation(Pos, Size, reinterpret_cast<uint8_t*>(&Data));
+  }
+
+  void AddInterestingWord(const uint8_t *Data, size_t Size) {
+    if (!RecordingMemmem || !F->InFuzzingThread()) return;
+    if (Size <= 1) return;
+    Size = std::min(Size, Word::GetMaxSize());
+    Word W(Data, Size);
+    InterestingWords.insert(W);
+  }
+
+ private:
+  bool IsTwoByteData(uint64_t Data) {
+    int64_t Signed = static_cast<int64_t>(Data);
+    Signed >>= 16;
+    return Signed == 0 || Signed == -1L;
+  }
+
+  // We don't want to create too many trace-based mutations as it is both
+  // expensive and useless. So after some number of mutations is collected,
+  // start rejecting some of them. The more there are mutations the more we
+  // reject.
+  bool WantToHandleOneMoreMutation() {
+    const size_t FirstN = 64;
+    // Gladly handle first N mutations.
+    if (NumMutations <= FirstN) return true;
+    size_t Diff = NumMutations - FirstN;
+    size_t DiffLog = sizeof(long) * 8 - __builtin_clzl((long)Diff);
+    assert(DiffLog > 0 && DiffLog < 64);
+    bool WantThisOne = MD.GetRand()(1 << DiffLog) == 0;  // 1 out of DiffLog.
+    return WantThisOne;
+  }
+
+  static const size_t kMaxMutations = 1 << 16;
+  size_t NumMutations;
+  TraceBasedMutation Mutations[kMaxMutations];
+  // TODO: std::set is too inefficient, need to have a custom DS here.
+  std::set<Word> InterestingWords;
+  MutationDispatcher &MD;
+  const FuzzingOptions Options;
+  const Fuzzer *F;
+  std::map<Word, size_t> AutoDictUnitCounts;
+  size_t AutoDictAdds = 0;
+};
+
+int TraceState::TryToAddDesiredData(uint64_t PresentData, uint64_t DesiredData,
+                                    size_t DataSize) {
+  if (NumMutations >= kMaxMutations || !WantToHandleOneMoreMutation()) return 0;
+  ScopedDoingMyOwnMemmem scoped_doing_my_own_memmem;
+  const uint8_t *UnitData;
+  auto UnitSize = F->GetCurrentUnitInFuzzingThead(&UnitData);
+  int Res = 0;
+  const uint8_t *Beg = UnitData;
+  const uint8_t *End = Beg + UnitSize;
+  for (const uint8_t *Cur = Beg; Cur < End; Cur++) {
+    Cur = (uint8_t *)SearchMemory(Cur, End - Cur, &PresentData, DataSize);
+    if (!Cur)
+      break;
+    size_t Pos = Cur - Beg;
+    assert(Pos < UnitSize);
+    AddMutation(Pos, DataSize, DesiredData);
+    AddMutation(Pos, DataSize, DesiredData + 1);
+    AddMutation(Pos, DataSize, DesiredData - 1);
+    Res++;
+  }
+  return Res;
+}
+
+int TraceState::TryToAddDesiredData(const uint8_t *PresentData,
+                                    const uint8_t *DesiredData,
+                                    size_t DataSize) {
+  if (NumMutations >= kMaxMutations || !WantToHandleOneMoreMutation()) return 0;
+  ScopedDoingMyOwnMemmem scoped_doing_my_own_memmem;
+  const uint8_t *UnitData;
+  auto UnitSize = F->GetCurrentUnitInFuzzingThead(&UnitData);
+  int Res = 0;
+  const uint8_t *Beg = UnitData;
+  const uint8_t *End = Beg + UnitSize;
+  for (const uint8_t *Cur = Beg; Cur < End; Cur++) {
+    Cur = (uint8_t *)SearchMemory(Cur, End - Cur, PresentData, DataSize);
+    if (!Cur)
+      break;
+    size_t Pos = Cur - Beg;
+    assert(Pos < UnitSize);
+    AddMutation(Pos, DataSize, DesiredData);
+    Res++;
+  }
+  return Res;
+}
+
+void TraceState::TraceMemcmpCallback(size_t CmpSize, const uint8_t *Data1,
+                                     const uint8_t *Data2) {
+  if (!RecordingMemcmp || !F->InFuzzingThread()) return;
+  CmpSize = std::min(CmpSize, Word::GetMaxSize());
+  int Added2 = TryToAddDesiredData(Data1, Data2, CmpSize);
+  int Added1 = TryToAddDesiredData(Data2, Data1, CmpSize);
+  if ((Added1 || Added2) && Options.Verbosity >= 3) {
+    Printf("MemCmp Added %d%d: ", Added1, Added2);
+    if (Added1) PrintASCII(Data1, CmpSize);
+    if (Added2) PrintASCII(Data2, CmpSize);
+    Printf("\n");
+  }
+}
+
+void TraceState::TraceSwitchCallback(uintptr_t PC, size_t ValSizeInBits,
+                                     uint64_t Val, size_t NumCases,
+                                     uint64_t *Cases) {
+  if (F->InFuzzingThread()) return;
+  size_t ValSize = ValSizeInBits / 8;
+  bool TryShort = IsTwoByteData(Val);
+  for (size_t i = 0; i < NumCases; i++)
+    TryShort &= IsTwoByteData(Cases[i]);
+
+  if (Options.Verbosity >= 3)
+    Printf("TraceSwitch: %p %zd # %zd; TryShort %d\n", PC, Val, NumCases,
+           TryShort);
+
+  for (size_t i = 0; i < NumCases; i++) {
+    TryToAddDesiredData(Val, Cases[i], ValSize);
+    if (TryShort)
+      TryToAddDesiredData(Val, Cases[i], 2);
+  }
+}
+
+static TraceState *TS;
+
+void Fuzzer::StartTraceRecording() {
+  if (!TS) return;
+  TS->StartTraceRecording();
+}
+
+void Fuzzer::StopTraceRecording() {
+  if (!TS) return;
+  TS->StopTraceRecording();
+}
+
+void Fuzzer::InitializeTraceState() {
+  if (!Options.UseMemcmp) return;
+  TS = new TraceState(MD, Options, this);
+}
+
+static size_t InternalStrnlen(const char *S, size_t MaxLen) {
+  size_t Len = 0;
+  for (; Len < MaxLen && S[Len]; Len++) {}
+  return Len;
+}
+
+}  // namespace fuzzer
+
+using fuzzer::TS;
+using fuzzer::RecordingMemcmp;
+
+extern "C" {
+
+// We may need to avoid defining weak hooks to stay compatible with older clang.
+#ifndef LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
+# define LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS 1
+#endif
+
+#if LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
+void __sanitizer_weak_hook_memcmp(void *caller_pc, const void *s1,
+                                  const void *s2, size_t n, int result) {
+  fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, n);
+  if (!RecordingMemcmp) return;
+  if (result == 0) return;  // No reason to mutate.
+  if (n <= 1) return;  // Not interesting.
+  TS->TraceMemcmpCallback(n, reinterpret_cast<const uint8_t *>(s1),
+                          reinterpret_cast<const uint8_t *>(s2));
+}
+
+void __sanitizer_weak_hook_strncmp(void *caller_pc, const char *s1,
+                                   const char *s2, size_t n, int result) {
+  fuzzer::TPC.AddValueForStrcmp(caller_pc, s1, s2, n);
+  if (!RecordingMemcmp) return;
+  if (result == 0) return;  // No reason to mutate.
+  size_t Len1 = fuzzer::InternalStrnlen(s1, n);
+  size_t Len2 = fuzzer::InternalStrnlen(s2, n);
+  n = std::min(n, Len1);
+  n = std::min(n, Len2);
+  if (n <= 1) return;  // Not interesting.
+  TS->TraceMemcmpCallback(n, reinterpret_cast<const uint8_t *>(s1),
+                          reinterpret_cast<const uint8_t *>(s2));
+}
+
+void __sanitizer_weak_hook_strcmp(void *caller_pc, const char *s1,
+                                   const char *s2, int result) {
+  fuzzer::TPC.AddValueForStrcmp(caller_pc, s1, s2, 64);
+  if (!RecordingMemcmp) return;
+  if (result == 0) return;  // No reason to mutate.
+  size_t Len1 = strlen(s1);
+  size_t Len2 = strlen(s2);
+  size_t N = std::min(Len1, Len2);
+  if (N <= 1) return;  // Not interesting.
+  TS->TraceMemcmpCallback(N, reinterpret_cast<const uint8_t *>(s1),
+                          reinterpret_cast<const uint8_t *>(s2));
+}
+
+void __sanitizer_weak_hook_strncasecmp(void *called_pc, const char *s1,
+                                       const char *s2, size_t n, int result) {
+  return __sanitizer_weak_hook_strncmp(called_pc, s1, s2, n, result);
+}
+void __sanitizer_weak_hook_strcasecmp(void *called_pc, const char *s1,
+                                      const char *s2, int result) {
+  return __sanitizer_weak_hook_strcmp(called_pc, s1, s2, result);
+}
+void __sanitizer_weak_hook_strstr(void *called_pc, const char *s1,
+                                  const char *s2, char *result) {
+  TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), strlen(s2));
+}
+void __sanitizer_weak_hook_strcasestr(void *called_pc, const char *s1,
+                                      const char *s2, char *result) {
+  TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), strlen(s2));
+}
+void __sanitizer_weak_hook_memmem(void *called_pc, const void *s1, size_t len1,
+                                  const void *s2, size_t len2, void *result) {
+  if (fuzzer::DoingMyOwnMemmem) return;
+  TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), len2);
+}
+
+#endif  // LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
+}  // extern "C"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtil.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtil.cpp
new file mode 100644
index 00000000..f5fd3a85
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtil.cpp
@@ -0,0 +1,218 @@
+//===- FuzzerUtil.cpp - Misc utils ----------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Misc utils.
+//===----------------------------------------------------------------------===//
+
+#include "FuzzerUtil.h"
+#include "FuzzerIO.h"
+#include "FuzzerInternal.h"
+#include <cassert>
+#include <chrono>
+#include <cstring>
+#include <errno.h>
+#include <signal.h>
+#include <sstream>
+#include <stdio.h>
+#include <sys/types.h>
+#include <thread>
+
+namespace fuzzer {
+
+void PrintHexArray(const uint8_t *Data, size_t Size,
+                   const char *PrintAfter) {
+  for (size_t i = 0; i < Size; i++)
+    Printf("0x%x,", (unsigned)Data[i]);
+  Printf("%s", PrintAfter);
+}
+
+void Print(const Unit &v, const char *PrintAfter) {
+  PrintHexArray(v.data(), v.size(), PrintAfter);
+}
+
+void PrintASCIIByte(uint8_t Byte) {
+  if (Byte == '\\')
+    Printf("\\\\");
+  else if (Byte == '"')
+    Printf("\\\"");
+  else if (Byte >= 32 && Byte < 127)
+    Printf("%c", Byte);
+  else
+    Printf("\\x%02x", Byte);
+}
+
+void PrintASCII(const uint8_t *Data, size_t Size, const char *PrintAfter) {
+  for (size_t i = 0; i < Size; i++)
+    PrintASCIIByte(Data[i]);
+  Printf("%s", PrintAfter);
+}
+
+void PrintASCII(const Unit &U, const char *PrintAfter) {
+  PrintASCII(U.data(), U.size(), PrintAfter);
+}
+
+bool ToASCII(uint8_t *Data, size_t Size) {
+  bool Changed = false;
+  for (size_t i = 0; i < Size; i++) {
+    uint8_t &X = Data[i];
+    auto NewX = X;
+    NewX &= 127;
+    if (!isspace(NewX) && !isprint(NewX))
+      NewX = ' ';
+    Changed |= NewX != X;
+    X = NewX;
+  }
+  return Changed;
+}
+
+bool IsASCII(const Unit &U) { return IsASCII(U.data(), U.size()); }
+
+bool IsASCII(const uint8_t *Data, size_t Size) {
+  for (size_t i = 0; i < Size; i++)
+    if (!(isprint(Data[i]) || isspace(Data[i]))) return false;
+  return true;
+}
+
+bool ParseOneDictionaryEntry(const std::string &Str, Unit *U) {
+  U->clear();
+  if (Str.empty()) return false;
+  size_t L = 0, R = Str.size() - 1;  // We are parsing the range [L,R].
+  // Skip spaces from both sides.
+  while (L < R && isspace(Str[L])) L++;
+  while (R > L && isspace(Str[R])) R--;
+  if (R - L < 2) return false;
+  // Check the closing "
+  if (Str[R] != '"') return false;
+  R--;
+  // Find the opening "
+  while (L < R && Str[L] != '"') L++;
+  if (L >= R) return false;
+  assert(Str[L] == '\"');
+  L++;
+  assert(L <= R);
+  for (size_t Pos = L; Pos <= R; Pos++) {
+    uint8_t V = (uint8_t)Str[Pos];
+    if (!isprint(V) && !isspace(V)) return false;
+    if (V =='\\') {
+      // Handle '\\'
+      if (Pos + 1 <= R && (Str[Pos + 1] == '\\' || Str[Pos + 1] == '"')) {
+        U->push_back(Str[Pos + 1]);
+        Pos++;
+        continue;
+      }
+      // Handle '\xAB'
+      if (Pos + 3 <= R && Str[Pos + 1] == 'x'
+           && isxdigit(Str[Pos + 2]) && isxdigit(Str[Pos + 3])) {
+        char Hex[] = "0xAA";
+        Hex[2] = Str[Pos + 2];
+        Hex[3] = Str[Pos + 3];
+        U->push_back(strtol(Hex, nullptr, 16));
+        Pos += 3;
+        continue;
+      }
+      return false;  // Invalid escape.
+    } else {
+      // Any other character.
+      U->push_back(V);
+    }
+  }
+  return true;
+}
+
+bool ParseDictionaryFile(const std::string &Text, std::vector<Unit> *Units) {
+  if (Text.empty()) {
+    Printf("ParseDictionaryFile: file does not exist or is empty\n");
+    return false;
+  }
+  std::istringstream ISS(Text);
+  Units->clear();
+  Unit U;
+  int LineNo = 0;
+  std::string S;
+  while (std::getline(ISS, S, '\n')) {
+    LineNo++;
+    size_t Pos = 0;
+    while (Pos < S.size() && isspace(S[Pos])) Pos++;  // Skip spaces.
+    if (Pos == S.size()) continue;  // Empty line.
+    if (S[Pos] == '#') continue;  // Comment line.
+    if (ParseOneDictionaryEntry(S, &U)) {
+      Units->push_back(U);
+    } else {
+      Printf("ParseDictionaryFile: error in line %d\n\t\t%s\n", LineNo,
+             S.c_str());
+      return false;
+    }
+  }
+  return true;
+}
+
+std::string Base64(const Unit &U) {
+  static const char Table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                              "abcdefghijklmnopqrstuvwxyz"
+                              "0123456789+/";
+  std::string Res;
+  size_t i;
+  for (i = 0; i + 2 < U.size(); i += 3) {
+    uint32_t x = (U[i] << 16) + (U[i + 1] << 8) + U[i + 2];
+    Res += Table[(x >> 18) & 63];
+    Res += Table[(x >> 12) & 63];
+    Res += Table[(x >> 6) & 63];
+    Res += Table[x & 63];
+  }
+  if (i + 1 == U.size()) {
+    uint32_t x = (U[i] << 16);
+    Res += Table[(x >> 18) & 63];
+    Res += Table[(x >> 12) & 63];
+    Res += "==";
+  } else if (i + 2 == U.size()) {
+    uint32_t x = (U[i] << 16) + (U[i + 1] << 8);
+    Res += Table[(x >> 18) & 63];
+    Res += Table[(x >> 12) & 63];
+    Res += Table[(x >> 6) & 63];
+    Res += "=";
+  }
+  return Res;
+}
+
+std::string DescribePC(const char *SymbolizedFMT, uintptr_t PC) {
+  if (!EF->__sanitizer_symbolize_pc) return "<can not symbolize>";
+  char PcDescr[1024];
+  EF->__sanitizer_symbolize_pc(reinterpret_cast<void*>(PC),
+                               SymbolizedFMT, PcDescr, sizeof(PcDescr));
+  PcDescr[sizeof(PcDescr) - 1] = 0;  // Just in case.
+  return PcDescr;
+}
+
+void PrintPC(const char *SymbolizedFMT, const char *FallbackFMT, uintptr_t PC) {
+  if (EF->__sanitizer_symbolize_pc)
+    Printf("%s", DescribePC(SymbolizedFMT, PC).c_str());
+  else
+    Printf(FallbackFMT, PC);
+}
+
+unsigned NumberOfCpuCores() {
+  unsigned N = std::thread::hardware_concurrency();
+  if (!N) {
+    Printf("WARNING: std::thread::hardware_concurrency not well defined for "
+           "your platform. Assuming CPU count of 1.\n");
+    N = 1;
+  }
+  return N;
+}
+
+bool ExecuteCommandAndReadOutput(const std::string &Command, std::string *Out) {
+  FILE *Pipe = OpenProcessPipe(Command.c_str(), "r");
+  if (!Pipe) return false;
+  char Buff[1024];
+  size_t N;
+  while ((N = fread(Buff, 1, sizeof(Buff), Pipe)) > 0)
+    Out->append(Buff, N);
+  return true;
+}
+
+}  // namespace fuzzer
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtil.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtil.h
new file mode 100644
index 00000000..08058c56
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtil.h
@@ -0,0 +1,72 @@
+//===- FuzzerUtil.h - Internal header for the Fuzzer Utils ------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Util functions.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_UTIL_H
+#define LLVM_FUZZER_UTIL_H
+
+#include "FuzzerDefs.h"
+
+namespace fuzzer {
+
+void PrintHexArray(const Unit &U, const char *PrintAfter = "");
+
+void PrintHexArray(const uint8_t *Data, size_t Size,
+                   const char *PrintAfter = "");
+
+void PrintASCII(const uint8_t *Data, size_t Size, const char *PrintAfter = "");
+
+void PrintASCII(const Unit &U, const char *PrintAfter = "");
+
+// Changes U to contain only ASCII (isprint+isspace) characters.
+// Returns true iff U has been changed.
+bool ToASCII(uint8_t *Data, size_t Size);
+
+bool IsASCII(const Unit &U);
+
+bool IsASCII(const uint8_t *Data, size_t Size);
+
+std::string Base64(const Unit &U);
+
+void PrintPC(const char *SymbolizedFMT, const char *FallbackFMT, uintptr_t PC);
+
+std::string DescribePC(const char *SymbolizedFMT, uintptr_t PC);
+
+unsigned NumberOfCpuCores();
+
+bool ExecuteCommandAndReadOutput(const std::string &Command, std::string *Out);
+
+// Platform specific functions.
+void SetSignalHandler(const FuzzingOptions& Options);
+
+void SleepSeconds(int Seconds);
+
+unsigned long GetPid();
+
+size_t GetPeakRSSMb();
+
+int ExecuteCommand(const std::string &Command);
+
+FILE *OpenProcessPipe(const char *Command, const char *Mode);
+
+const void *SearchMemory(const void *haystack, size_t haystacklen,
+                         const void *needle, size_t needlelen);
+
+std::string CloneArgsWithoutX(const std::vector<std::string> &Args,
+                              const char *X1, const char *X2);
+
+inline std::string CloneArgsWithoutX(const std::vector<std::string> &Args,
+                                     const char *X) {
+  return CloneArgsWithoutX(Args, X, X);
+}
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_UTIL_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilDarwin.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilDarwin.cpp
new file mode 100644
index 00000000..9674368c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilDarwin.cpp
@@ -0,0 +1,152 @@
+//===- FuzzerUtilDarwin.cpp - Misc utils ----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Misc utils for Darwin.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_APPLE
+
+#include "FuzzerIO.h"
+#include <mutex>
+#include <signal.h>
+#include <spawn.h>
+#include <sys/wait.h>
+
+// There is no header for this on macOS so declare here
+extern "C" char **environ;
+
+namespace fuzzer {
+
+static std::mutex SignalMutex;
+// Global variables used to keep track of how signal handling should be
+// restored. They should **not** be accessed without holding `SignalMutex`.
+static int ActiveThreadCount = 0;
+static struct sigaction OldSigIntAction;
+static struct sigaction OldSigQuitAction;
+static sigset_t OldBlockedSignalsSet;
+
+// This is a reimplementation of Libc's `system()`. On Darwin the Libc
+// implementation contains a mutex which prevents it from being used
+// concurrently. This implementation **can** be used concurrently. It sets the
+// signal handlers when the first thread enters and restores them when the last
+// thread finishes execution of the function and ensures this is not racey by
+// using a mutex.
+int ExecuteCommand(const std::string &Command) {
+  posix_spawnattr_t SpawnAttributes;
+  if (posix_spawnattr_init(&SpawnAttributes))
+    return -1;
+  // Block and ignore signals of the current process when the first thread
+  // enters.
+  {
+    std::lock_guard<std::mutex> Lock(SignalMutex);
+    if (ActiveThreadCount == 0) {
+      static struct sigaction IgnoreSignalAction;
+      sigset_t BlockedSignalsSet;
+      memset(&IgnoreSignalAction, 0, sizeof(IgnoreSignalAction));
+      IgnoreSignalAction.sa_handler = SIG_IGN;
+
+      if (sigaction(SIGINT, &IgnoreSignalAction, &OldSigIntAction) == -1) {
+        Printf("Failed to ignore SIGINT\n");
+        (void)posix_spawnattr_destroy(&SpawnAttributes);
+        return -1;
+      }
+      if (sigaction(SIGQUIT, &IgnoreSignalAction, &OldSigQuitAction) == -1) {
+        Printf("Failed to ignore SIGQUIT\n");
+        // Try our best to restore the signal handlers.
+        (void)sigaction(SIGINT, &OldSigIntAction, NULL);
+        (void)posix_spawnattr_destroy(&SpawnAttributes);
+        return -1;
+      }
+
+      (void)sigemptyset(&BlockedSignalsSet);
+      (void)sigaddset(&BlockedSignalsSet, SIGCHLD);
+      if (sigprocmask(SIG_BLOCK, &BlockedSignalsSet, &OldBlockedSignalsSet) ==
+          -1) {
+        Printf("Failed to block SIGCHLD\n");
+        // Try our best to restore the signal handlers.
+        (void)sigaction(SIGQUIT, &OldSigQuitAction, NULL);
+        (void)sigaction(SIGINT, &OldSigIntAction, NULL);
+        (void)posix_spawnattr_destroy(&SpawnAttributes);
+        return -1;
+      }
+    }
+    ++ActiveThreadCount;
+  }
+
+  // NOTE: Do not introduce any new `return` statements past this
+  // point. It is important that `ActiveThreadCount` always be decremented
+  // when leaving this function.
+
+  // Make sure the child process uses the default handlers for the
+  // following signals rather than inheriting what the parent has.
+  sigset_t DefaultSigSet;
+  (void)sigemptyset(&DefaultSigSet);
+  (void)sigaddset(&DefaultSigSet, SIGQUIT);
+  (void)sigaddset(&DefaultSigSet, SIGINT);
+  (void)posix_spawnattr_setsigdefault(&SpawnAttributes, &DefaultSigSet);
+  // Make sure the child process doesn't block SIGCHLD
+  (void)posix_spawnattr_setsigmask(&SpawnAttributes, &OldBlockedSignalsSet);
+  short SpawnFlags = POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK;
+  (void)posix_spawnattr_setflags(&SpawnAttributes, SpawnFlags);
+
+  pid_t Pid;
+  char **Environ = environ; // Read from global
+  const char *CommandCStr = Command.c_str();
+  const char *Argv[] = {"sh", "-c", CommandCStr, NULL};
+  int ErrorCode = 0, ProcessStatus = 0;
+  // FIXME: We probably shouldn't hardcode the shell path.
+  ErrorCode = posix_spawn(&Pid, "/bin/sh", NULL, &SpawnAttributes,
+                          (char *const *)Argv, Environ);
+  (void)posix_spawnattr_destroy(&SpawnAttributes);
+  if (!ErrorCode) {
+    pid_t SavedPid = Pid;
+    do {
+      // Repeat until call completes uninterrupted.
+      Pid = waitpid(SavedPid, &ProcessStatus, /*options=*/0);
+    } while (Pid == -1 && errno == EINTR);
+    if (Pid == -1) {
+      // Fail for some other reason.
+      ProcessStatus = -1;
+    }
+  } else if (ErrorCode == ENOMEM || ErrorCode == EAGAIN) {
+    // Fork failure.
+    ProcessStatus = -1;
+  } else {
+    // Shell execution failure.
+    ProcessStatus = W_EXITCODE(127, 0);
+  }
+
+  // Restore the signal handlers of the current process when the last thread
+  // using this function finishes.
+  {
+    std::lock_guard<std::mutex> Lock(SignalMutex);
+    --ActiveThreadCount;
+    if (ActiveThreadCount == 0) {
+      bool FailedRestore = false;
+      if (sigaction(SIGINT, &OldSigIntAction, NULL) == -1) {
+        Printf("Failed to restore SIGINT handling\n");
+        FailedRestore = true;
+      }
+      if (sigaction(SIGQUIT, &OldSigQuitAction, NULL) == -1) {
+        Printf("Failed to restore SIGQUIT handling\n");
+        FailedRestore = true;
+      }
+      if (sigprocmask(SIG_BLOCK, &OldBlockedSignalsSet, NULL) == -1) {
+        Printf("Failed to unblock SIGCHLD\n");
+        FailedRestore = true;
+      }
+      if (FailedRestore)
+        ProcessStatus = -1;
+    }
+  }
+  return ProcessStatus;
+}
+
+} // namespace fuzzer
+
+#endif // LIBFUZZER_APPLE
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilLinux.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilLinux.cpp
new file mode 100644
index 00000000..dfe7e6f4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilLinux.cpp
@@ -0,0 +1,24 @@
+//===- FuzzerUtilLinux.cpp - Misc utils for Linux. ------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Misc utils for Linux.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_LINUX
+
+#include <stdlib.h>
+
+namespace fuzzer {
+
+int ExecuteCommand(const std::string &Command) {
+  return system(Command.c_str());
+}
+
+} // namespace fuzzer
+
+#endif // LIBFUZZER_LINUX
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilPosix.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilPosix.cpp
new file mode 100644
index 00000000..8b484b8e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilPosix.cpp
@@ -0,0 +1,117 @@
+//===- FuzzerUtilPosix.cpp - Misc utils for Posix. ------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Misc utils implementation using Posix API.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_POSIX
+#include "FuzzerIO.h"
+#include "FuzzerInternal.h"
+#include <cassert>
+#include <chrono>
+#include <cstring>
+#include <errno.h>
+#include <iomanip>
+#include <signal.h>
+#include <sstream>
+#include <stdio.h>
+#include <sys/resource.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <thread>
+#include <unistd.h>
+
+namespace fuzzer {
+
+static void AlarmHandler(int, siginfo_t *, void *) {
+  Fuzzer::StaticAlarmCallback();
+}
+
+static void CrashHandler(int, siginfo_t *, void *) {
+  Fuzzer::StaticCrashSignalCallback();
+}
+
+static void InterruptHandler(int, siginfo_t *, void *) {
+  Fuzzer::StaticInterruptCallback();
+}
+
+static void SetSigaction(int signum,
+                         void (*callback)(int, siginfo_t *, void *)) {
+  struct sigaction sigact;
+  memset(&sigact, 0, sizeof(sigact));
+  sigact.sa_sigaction = callback;
+  if (sigaction(signum, &sigact, 0)) {
+    Printf("libFuzzer: sigaction failed with %d\n", errno);
+    exit(1);
+  }
+}
+
+void SetTimer(int Seconds) {
+  struct itimerval T {
+    {Seconds, 0}, { Seconds, 0 }
+  };
+  if (setitimer(ITIMER_REAL, &T, nullptr)) {
+    Printf("libFuzzer: setitimer failed with %d\n", errno);
+    exit(1);
+  }
+  SetSigaction(SIGALRM, AlarmHandler);
+}
+
+void SetSignalHandler(const FuzzingOptions& Options) {
+  if (Options.UnitTimeoutSec > 0)
+    SetTimer(Options.UnitTimeoutSec / 2 + 1);
+  if (Options.HandleInt)
+    SetSigaction(SIGINT, InterruptHandler);
+  if (Options.HandleTerm)
+    SetSigaction(SIGTERM, InterruptHandler);
+  if (Options.HandleSegv)
+    SetSigaction(SIGSEGV, CrashHandler);
+  if (Options.HandleBus)
+    SetSigaction(SIGBUS, CrashHandler);
+  if (Options.HandleAbrt)
+    SetSigaction(SIGABRT, CrashHandler);
+  if (Options.HandleIll)
+    SetSigaction(SIGILL, CrashHandler);
+  if (Options.HandleFpe)
+    SetSigaction(SIGFPE, CrashHandler);
+}
+
+void SleepSeconds(int Seconds) {
+  sleep(Seconds); // Use C API to avoid coverage from instrumented libc++.
+}
+
+unsigned long GetPid() { return (unsigned long)getpid(); }
+
+size_t GetPeakRSSMb() {
+  struct rusage usage;
+  if (getrusage(RUSAGE_SELF, &usage))
+    return 0;
+  if (LIBFUZZER_LINUX) {
+    // ru_maxrss is in KiB
+    return usage.ru_maxrss >> 10;
+  } else if (LIBFUZZER_APPLE) {
+    // ru_maxrss is in bytes
+    return usage.ru_maxrss >> 20;
+  }
+  assert(0 && "GetPeakRSSMb() is not implemented for your platform");
+  return 0;
+}
+
+FILE *OpenProcessPipe(const char *Command, const char *Mode) {
+  return popen(Command, Mode);
+}
+
+const void *SearchMemory(const void *Data, size_t DataLen, const void *Patt,
+                         size_t PattLen) {
+  return memmem(Data, DataLen, Patt, PattLen);
+}
+
+}  // namespace fuzzer
+
+#endif // LIBFUZZER_POSIX
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilWindows.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilWindows.cpp
new file mode 100644
index 00000000..64adb7cd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerUtilWindows.cpp
@@ -0,0 +1,182 @@
+//===- FuzzerUtilWindows.cpp - Misc utils for Windows. --------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Misc utils implementation for Windows.
+//===----------------------------------------------------------------------===//
+#include "FuzzerDefs.h"
+#if LIBFUZZER_WINDOWS
+#include "FuzzerIO.h"
+#include "FuzzerInternal.h"
+#include <cassert>
+#include <chrono>
+#include <cstring>
+#include <errno.h>
+#include <iomanip>
+#include <signal.h>
+#include <sstream>
+#include <stdio.h>
+#include <sys/types.h>
+#include <windows.h>
+#include <Psapi.h>
+
+namespace fuzzer {
+
+static const FuzzingOptions* HandlerOpt = nullptr;
+
+LONG CALLBACK ExceptionHandler(PEXCEPTION_POINTERS ExceptionInfo) {
+  switch (ExceptionInfo->ExceptionRecord->ExceptionCode) {
+    case EXCEPTION_ACCESS_VIOLATION:
+    case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
+    case EXCEPTION_STACK_OVERFLOW:
+      if (HandlerOpt->HandleSegv)
+        Fuzzer::StaticCrashSignalCallback();
+      break;
+    case EXCEPTION_DATATYPE_MISALIGNMENT:
+    case EXCEPTION_IN_PAGE_ERROR:
+      if (HandlerOpt->HandleBus)
+        Fuzzer::StaticCrashSignalCallback();
+      break;
+    case EXCEPTION_ILLEGAL_INSTRUCTION:
+    case EXCEPTION_PRIV_INSTRUCTION:
+      if (HandlerOpt->HandleIll)
+        Fuzzer::StaticCrashSignalCallback();
+      break;
+    case EXCEPTION_FLT_DENORMAL_OPERAND:
+    case EXCEPTION_FLT_DIVIDE_BY_ZERO:
+    case EXCEPTION_FLT_INEXACT_RESULT:
+    case EXCEPTION_FLT_INVALID_OPERATION:
+    case EXCEPTION_FLT_OVERFLOW:
+    case EXCEPTION_FLT_STACK_CHECK:
+    case EXCEPTION_FLT_UNDERFLOW:
+    case EXCEPTION_INT_DIVIDE_BY_ZERO:
+    case EXCEPTION_INT_OVERFLOW:
+      if (HandlerOpt->HandleFpe)
+        Fuzzer::StaticCrashSignalCallback();
+      break;
+  }
+  return EXCEPTION_CONTINUE_SEARCH;
+}
+
+BOOL WINAPI CtrlHandler(DWORD dwCtrlType) {
+  switch (dwCtrlType) {
+    case CTRL_C_EVENT:
+      if (HandlerOpt->HandleInt)
+        Fuzzer::StaticInterruptCallback();
+      return TRUE;
+    case CTRL_BREAK_EVENT:
+      if (HandlerOpt->HandleTerm)
+        Fuzzer::StaticInterruptCallback();
+      return TRUE;
+  }
+  return FALSE;
+}
+
+void CALLBACK AlarmHandler(PVOID, BOOLEAN) {
+  Fuzzer::StaticAlarmCallback();
+}
+
+class TimerQ {
+  HANDLE TimerQueue;
+ public:
+  TimerQ() : TimerQueue(NULL) {};
+  ~TimerQ() {
+    if (TimerQueue)
+      DeleteTimerQueueEx(TimerQueue, NULL);
+  };
+  void SetTimer(int Seconds) {
+    if (!TimerQueue) {
+      TimerQueue = CreateTimerQueue();
+      if (!TimerQueue) {
+        Printf("libFuzzer: CreateTimerQueue failed.\n");
+        exit(1);
+      }
+    }
+    HANDLE Timer;
+    if (!CreateTimerQueueTimer(&Timer, TimerQueue, AlarmHandler, NULL,
+        Seconds*1000, Seconds*1000, 0)) {
+      Printf("libFuzzer: CreateTimerQueueTimer failed.\n");
+      exit(1);
+    }
+  };
+};
+
+static TimerQ Timer;
+
+static void CrashHandler(int) { Fuzzer::StaticCrashSignalCallback(); }
+
+void SetSignalHandler(const FuzzingOptions& Options) {
+  HandlerOpt = &Options;
+
+  if (Options.UnitTimeoutSec > 0)
+    Timer.SetTimer(Options.UnitTimeoutSec / 2 + 1);
+
+  if (Options.HandleInt || Options.HandleTerm)
+    if (!SetConsoleCtrlHandler(CtrlHandler, TRUE)) {
+      DWORD LastError = GetLastError();
+      Printf("libFuzzer: SetConsoleCtrlHandler failed (Error code: %lu).\n",
+        LastError);
+      exit(1);
+    }
+
+  if (Options.HandleSegv || Options.HandleBus || Options.HandleIll ||
+      Options.HandleFpe)
+    if (!AddVectoredExceptionHandler(1, ExceptionHandler)) {
+      Printf("libFuzzer: AddVectoredExceptionHandler failed.\n");
+      exit(1);
+    }
+
+  if (Options.HandleAbrt)
+    if (SIG_ERR == signal(SIGABRT, CrashHandler)) {
+      Printf("libFuzzer: signal failed with %d\n", errno);
+      exit(1);
+    }
+}
+
+void SleepSeconds(int Seconds) { Sleep(Seconds * 1000); }
+
+unsigned long GetPid() { return GetCurrentProcessId(); }
+
+size_t GetPeakRSSMb() {
+  PROCESS_MEMORY_COUNTERS info;
+  if (!GetProcessMemoryInfo(GetCurrentProcess(), &info, sizeof(info)))
+    return 0;
+  return info.PeakWorkingSetSize >> 20;
+}
+
+FILE *OpenProcessPipe(const char *Command, const char *Mode) {
+  return _popen(Command, Mode);
+}
+
+int ExecuteCommand(const std::string &Command) {
+  return system(Command.c_str());
+}
+
+const void *SearchMemory(const void *Data, size_t DataLen, const void *Patt,
+                         size_t PattLen) {
+  // TODO: make this implementation more efficient.
+  const char *Cdata = (const char *)Data;
+  const char *Cpatt = (const char *)Patt;
+
+  if (!Data || !Patt || DataLen == 0 || PattLen == 0 || DataLen < PattLen)
+    return NULL;
+
+  if (PattLen == 1)
+    return memchr(Data, *Cpatt, DataLen);
+
+  const char *End = Cdata + DataLen - PattLen + 1;
+
+  for (const char *It = Cdata; It < End; ++It)
+    if (It[0] == Cpatt[0] && memcmp(It, Cpatt, PattLen) == 0)
+      return It;
+
+  return NULL;
+}
+
+} // namespace fuzzer
+
+#endif // LIBFUZZER_WINDOWS
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerValueBitMap.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerValueBitMap.h
new file mode 100644
index 00000000..0692acd1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/FuzzerValueBitMap.h
@@ -0,0 +1,87 @@
+//===- FuzzerValueBitMap.h - INTERNAL - Bit map -----------------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// ValueBitMap.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZER_VALUE_BIT_MAP_H
+#define LLVM_FUZZER_VALUE_BIT_MAP_H
+
+#include "FuzzerDefs.h"
+
+namespace fuzzer {
+
+// A bit map containing kMapSizeInWords bits.
+struct ValueBitMap {
+  static const size_t kMapSizeInBits = 65371;        // Prime.
+  static const size_t kMapSizeInBitsAligned = 65536; // 2^16
+  static const size_t kBitsInWord = (sizeof(uintptr_t) * 8);
+  static const size_t kMapSizeInWords = kMapSizeInBitsAligned / kBitsInWord;
+ public:
+  static const size_t kNumberOfItems = kMapSizeInBits;
+  // Clears all bits.
+  void Reset() { memset(Map, 0, sizeof(Map)); }
+
+  // Computes a hash function of Value and sets the corresponding bit.
+  // Returns true if the bit was changed from 0 to 1.
+  inline bool AddValue(uintptr_t Value) {
+    uintptr_t Idx = Value < kMapSizeInBits ? Value : Value % kMapSizeInBits;
+    uintptr_t WordIdx = Idx / kBitsInWord;
+    uintptr_t BitIdx = Idx % kBitsInWord;
+    uintptr_t Old = Map[WordIdx];
+    uintptr_t New = Old | (1UL << BitIdx);
+    Map[WordIdx] = New;
+    return New != Old;
+  }
+
+  inline bool Get(uintptr_t Idx) {
+    assert(Idx < kMapSizeInBits);
+    uintptr_t WordIdx = Idx / kBitsInWord;
+    uintptr_t BitIdx = Idx % kBitsInWord;
+    return Map[WordIdx] & (1UL << BitIdx);
+  }
+
+  size_t GetNumBitsSinceLastMerge() const { return NumBits; }
+
+  // Merges 'Other' into 'this', clears 'Other', updates NumBits,
+  // returns true if new bits were added.
+  ATTRIBUTE_TARGET_POPCNT
+  bool MergeFrom(ValueBitMap &Other) {
+    uintptr_t Res = 0;
+    size_t OldNumBits = NumBits;
+    for (size_t i = 0; i < kMapSizeInWords; i++) {
+      auto O = Other.Map[i];
+      auto M = Map[i];
+      if (O) {
+        Map[i] = (M |= O);
+        Other.Map[i] = 0;
+      }
+      if (M)
+        Res += __builtin_popcountl(M);
+    }
+    NumBits = Res;
+    return OldNumBits < NumBits;
+  }
+
+  template <class Callback>
+  void ForEach(Callback CB) {
+    for (size_t i = 0; i < kMapSizeInWords; i++)
+      if (uintptr_t M = Map[i])
+        for (size_t j = 0; j < sizeof(M) * 8; j++)
+          if (M & ((uintptr_t)1 << j))
+            CB(i * sizeof(M) * 8 + j);
+  }
+
+ private:
+  size_t NumBits = 0;
+  uintptr_t Map[kMapSizeInWords] __attribute__((aligned(512)));
+};
+
+}  // namespace fuzzer
+
+#endif  // LLVM_FUZZER_VALUE_BIT_MAP_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/README.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/README.txt
new file mode 100644
index 00000000..79f49b55
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/README.txt
@@ -0,0 +1,2 @@
+Move to http://llvm.org/docs/LibFuzzer.html
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/afl/afl_driver.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/afl/afl_driver.cpp
new file mode 100644
index 00000000..57ee5610
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/afl/afl_driver.cpp
@@ -0,0 +1,295 @@
+//===- afl_driver.cpp - a glue between AFL and libFuzzer --------*- C++ -* ===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//===----------------------------------------------------------------------===//
+
+/* This file allows to fuzz libFuzzer-style target functions
+ (LLVMFuzzerTestOneInput) with AFL using AFL's persistent (in-process) mode.
+
+Usage:
+################################################################################
+cat << EOF > test_fuzzer.cc
+#include <stdint.h>
+#include <stddef.h>
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  if (size > 0 && data[0] == 'H')
+    if (size > 1 && data[1] == 'I')
+       if (size > 2 && data[2] == '!')
+       __builtin_trap();
+  return 0;
+}
+EOF
+# Build your target with -fsanitize-coverage=trace-pc using fresh clang.
+clang -g -fsanitize-coverage=trace-pc test_fuzzer.cc -c
+# Build afl-llvm-rt.o.c from the AFL distribution.
+clang -c -w $AFL_HOME/llvm_mode/afl-llvm-rt.o.c
+# Build this file, link it with afl-llvm-rt.o.o and the target code.
+clang++ afl_driver.cpp test_fuzzer.o afl-llvm-rt.o.o
+# Run AFL:
+rm -rf IN OUT; mkdir IN OUT; echo z > IN/z;
+$AFL_HOME/afl-fuzz -i IN -o OUT ./a.out
+################################################################################
+Environment Variables:
+There are a few environment variables that can be set to use features that
+afl-fuzz doesn't have.
+
+AFL_DRIVER_STDERR_DUPLICATE_FILENAME: Setting this *appends* stderr to the file
+specified. If the file does not exist, it is created. This is useful for getting
+stack traces (when using ASAN for example) or original error messages on hard to
+reproduce bugs.
+
+AFL_DRIVER_EXTRA_STATS_FILENAME: Setting this causes afl_driver to write extra
+statistics to the file specified. Currently these are peak_rss_mb
+(the peak amount of virtual memory used in MB) and slowest_unit_time_secs. If
+the file does not exist it is created. If the file does exist then
+afl_driver assumes it was restarted by afl-fuzz and will try to read old
+statistics from the file. If that fails then the process will quit.
+
+*/
+#include <assert.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+// Platform detection. Copied from FuzzerInternal.h
+#ifdef __linux__
+#define LIBFUZZER_LINUX 1
+#define LIBFUZZER_APPLE 0
+#elif __APPLE__
+#define LIBFUZZER_LINUX 0
+#define LIBFUZZER_APPLE 1
+#else
+#error "Support for your platform has not been implemented"
+#endif
+
+// Used to avoid repeating error checking boilerplate. If cond is false, a
+// fatal error has occurred in the program. In this event print error_message
+// to stderr and abort(). Otherwise do nothing. Note that setting
+// AFL_DRIVER_STDERR_DUPLICATE_FILENAME may cause error_message to be appended
+// to the file as well, if the error occurs after the duplication is performed.
+#define CHECK_ERROR(cond, error_message)                                       \
+  if (!(cond)) {                                                               \
+    fprintf(stderr, (error_message));                                          \
+    abort();                                                                   \
+  }
+
+// libFuzzer interface is thin, so we don't include any libFuzzer headers.
+extern "C" {
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
+__attribute__((weak)) int LLVMFuzzerInitialize(int *argc, char ***argv);
+}
+
+// Notify AFL about persistent mode.
+static volatile char AFL_PERSISTENT[] = "##SIG_AFL_PERSISTENT##";
+extern "C" int __afl_persistent_loop(unsigned int);
+static volatile char suppress_warning2 = AFL_PERSISTENT[0];
+
+// Notify AFL about deferred forkserver.
+static volatile char AFL_DEFER_FORKSVR[] = "##SIG_AFL_DEFER_FORKSRV##";
+extern "C" void  __afl_manual_init();
+static volatile char suppress_warning1 = AFL_DEFER_FORKSVR[0];
+
+// Input buffer.
+static const size_t kMaxAflInputSize = 1 << 20;
+static uint8_t AflInputBuf[kMaxAflInputSize];
+
+// Variables we need for writing to the extra stats file.
+static FILE *extra_stats_file = NULL;
+static uint32_t previous_peak_rss = 0;
+static time_t slowest_unit_time_secs = 0;
+static const int kNumExtraStats = 2;
+static const char *kExtraStatsFormatString = "peak_rss_mb            : %u\n"
+                                             "slowest_unit_time_sec  : %u\n";
+
+// Copied from FuzzerUtil.cpp.
+size_t GetPeakRSSMb() {
+  struct rusage usage;
+  if (getrusage(RUSAGE_SELF, &usage))
+    return 0;
+  if (LIBFUZZER_LINUX) {
+    // ru_maxrss is in KiB
+    return usage.ru_maxrss >> 10;
+  } else if (LIBFUZZER_APPLE) {
+    // ru_maxrss is in bytes
+    return usage.ru_maxrss >> 20;
+  }
+  assert(0 && "GetPeakRSSMb() is not implemented for your platform");
+  return 0;
+}
+
+// Based on SetSigaction in FuzzerUtil.cpp
+static void SetSigaction(int signum,
+                         void (*callback)(int, siginfo_t *, void *)) {
+  struct sigaction sigact;
+  memset(&sigact, 0, sizeof(sigact));
+  sigact.sa_sigaction = callback;
+  if (sigaction(signum, &sigact, 0)) {
+    fprintf(stderr, "libFuzzer: sigaction failed with %d\n", errno);
+    exit(1);
+  }
+}
+
+// Write extra stats to the file specified by the user. If none is specified
+// this function will never be called.
+static void write_extra_stats() {
+  uint32_t peak_rss = GetPeakRSSMb();
+
+  if (peak_rss < previous_peak_rss)
+    peak_rss = previous_peak_rss;
+
+  int chars_printed = fprintf(extra_stats_file, kExtraStatsFormatString,
+                              peak_rss, slowest_unit_time_secs);
+
+  CHECK_ERROR(chars_printed != 0, "Failed to write extra_stats_file");
+
+  CHECK_ERROR(fclose(extra_stats_file) == 0,
+              "Failed to close extra_stats_file");
+}
+
+// Call write_extra_stats before we exit.
+static void crash_handler(int, siginfo_t *, void *) {
+  // Make sure we don't try calling write_extra_stats again if we crashed while
+  // trying to call it.
+  static bool first_crash = true;
+  CHECK_ERROR(first_crash,
+              "Crashed in crash signal handler. This is a bug in the fuzzer.");
+
+  first_crash = false;
+  write_extra_stats();
+}
+
+// If the user has specified an extra_stats_file through the environment
+// variable AFL_DRIVER_EXTRA_STATS_FILENAME, then perform necessary set up
+// to write stats to it on exit. If no file is specified, do nothing. Otherwise
+// install signal and exit handlers to write to the file when the process exits.
+// Then if the file doesn't exist create it and set extra stats to 0. But if it
+// does exist then read the initial values of the extra stats from the file
+// and check that the file is writable.
+static void maybe_initialize_extra_stats() {
+  // If AFL_DRIVER_EXTRA_STATS_FILENAME isn't set then we have nothing to do.
+  char *extra_stats_filename = getenv("AFL_DRIVER_EXTRA_STATS_FILENAME");
+  if (!extra_stats_filename)
+    return;
+
+  // Open the file and find the previous peak_rss_mb value.
+  // This is necessary because the fuzzing process is restarted after N
+  // iterations are completed. So we may need to get this value from a previous
+  // process to be accurate.
+  extra_stats_file = fopen(extra_stats_filename, "r");
+
+  // If extra_stats_file already exists: read old stats from it.
+  if (extra_stats_file) {
+    int matches = fscanf(extra_stats_file, kExtraStatsFormatString,
+                         &previous_peak_rss, &slowest_unit_time_secs);
+
+    // Make sure we have read a real extra stats file and that we have used it
+    // to set slowest_unit_time_secs and previous_peak_rss.
+    CHECK_ERROR(matches == kNumExtraStats, "Extra stats file is corrupt");
+
+    CHECK_ERROR(fclose(extra_stats_file) == 0, "Failed to close file");
+
+    // Now open the file for writing.
+    extra_stats_file = fopen(extra_stats_filename, "w");
+    CHECK_ERROR(extra_stats_file,
+                "Failed to open extra stats file for writing");
+  } else {
+    // Looks like this is the first time in a fuzzing job this is being called.
+    extra_stats_file = fopen(extra_stats_filename, "w+");
+    CHECK_ERROR(extra_stats_file, "failed to create extra stats file");
+  }
+
+  // Make sure that crash_handler gets called on any kind of fatal error.
+  int crash_signals[] = {SIGSEGV, SIGBUS, SIGABRT, SIGILL, SIGFPE,  SIGINT,
+                         SIGTERM};
+
+  const size_t num_signals = sizeof(crash_signals) / sizeof(crash_signals[0]);
+
+  for (size_t idx = 0; idx < num_signals; idx++)
+    SetSigaction(crash_signals[idx], crash_handler);
+
+  // Make sure it gets called on other kinds of exits.
+  atexit(write_extra_stats);
+}
+
+// If the user asks us to duplicate stderr, then do it.
+static void maybe_duplicate_stderr() {
+  char* stderr_duplicate_filename =
+      getenv("AFL_DRIVER_STDERR_DUPLICATE_FILENAME");
+
+  if (!stderr_duplicate_filename)
+    return;
+
+  FILE* stderr_duplicate_stream =
+      freopen(stderr_duplicate_filename, "a+", stderr);
+
+  if (!stderr_duplicate_stream) {
+    fprintf(
+        stderr,
+        "Failed to duplicate stderr to AFL_DRIVER_STDERR_DUPLICATE_FILENAME");
+    abort();
+  }
+}
+
+int main(int argc, char **argv) {
+  fprintf(stderr, "======================= INFO =========================\n"
+                  "This binary is built for AFL-fuzz.\n"
+                  "To run the target function on a single input execute this:\n"
+                  "  %s < INPUT_FILE\n"
+                  "To run the fuzzing execute this:\n"
+                  "  afl-fuzz [afl-flags] %s [N] "
+                  "-- run N fuzzing iterations before "
+                  "re-spawning the process (default: 1000)\n"
+                  "======================================================\n",
+          argv[0], argv[0]);
+  if (LLVMFuzzerInitialize)
+    LLVMFuzzerInitialize(&argc, &argv);
+  // Do any other expensive one-time initialization here.
+
+  maybe_duplicate_stderr();
+  maybe_initialize_extra_stats();
+
+  __afl_manual_init();
+
+  int N = 1000;
+  if (argc >= 2)
+    N = atoi(argv[1]);
+  assert(N > 0);
+  time_t unit_time_secs;
+  int num_runs = 0;
+  while (__afl_persistent_loop(N)) {
+    ssize_t n_read = read(0, AflInputBuf, kMaxAflInputSize);
+    if (n_read > 0) {
+      // Copy AflInputBuf into a separate buffer to let asan find buffer
+      // overflows. Don't use unique_ptr/etc to avoid extra dependencies.
+      uint8_t *copy = new uint8_t[n_read];
+      memcpy(copy, AflInputBuf, n_read);
+
+      struct timeval unit_start_time;
+      CHECK_ERROR(gettimeofday(&unit_start_time, NULL) == 0,
+                  "Calling gettimeofday failed");
+
+      num_runs++;
+      LLVMFuzzerTestOneInput(copy, n_read);
+
+      struct timeval unit_stop_time;
+      CHECK_ERROR(gettimeofday(&unit_stop_time, NULL) == 0,
+                  "Calling gettimeofday failed");
+
+      // Update slowest_unit_time_secs if we see a new max.
+      unit_time_secs = unit_stop_time.tv_sec - unit_start_time.tv_sec;
+      if (slowest_unit_time_secs < unit_time_secs)
+        slowest_unit_time_secs = unit_time_secs;
+
+      delete[] copy;
+    }
+  }
+  fprintf(stderr, "%s: successfully executed %d input(s)\n", argv[0], num_runs);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/build.sh b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/build.sh
new file mode 100644
index 00000000..27c148ad
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/build.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+LIBFUZZER_SRC_DIR=$(dirname $0)
+for f in $LIBFUZZER_SRC_DIR/*.cpp; do
+  clang -g -O2 -fno-omit-frame-pointer -std=c++11 $f -c &
+done
+wait
+rm -f libFuzzer.a
+ar ru libFuzzer.a Fuzzer*.o
+rm -f Fuzzer*.o
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/cxx.dict b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/cxx.dict
new file mode 100644
index 00000000..41350f47
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/cxx.dict
@@ -0,0 +1,122 @@
+"++"
+"--"
+"<<"
+">>"
+"+="
+"-="
+"*="
+"/="
+">>="
+"<<="
+"&="
+"|="
+"^="
+"%="
+"!="
+"&&"
+"||"
+"=="
+">="
+"<="
+"->"
+"alignas"
+"alignof"
+"and"
+"and_eq"
+"asm"
+"auto"
+"bitand"
+"bitor"
+"bool"
+"break"
+"case"
+"catch"
+"char"
+"char16_t"
+"char32_t"
+"class"
+"compl"
+"concept"
+"const"
+"constexpr"
+"const_cast"
+"continue"
+"decltype"
+"default"
+"delete"
+"do"
+"double"
+"dynamic_cast"
+"else"
+"enum"
+"explicit"
+"export"
+"extern"
+"false"
+"float"
+"for"
+"friend"
+"goto"
+"if"
+"inline"
+"int"
+"long"
+"mutable"
+"namespace"
+"new"
+"noexcept"
+"not"
+"not_eq"
+"nullptr"
+"operator"
+"or"
+"or_eq"
+"private"
+"protected"
+"public"
+"register"
+"reinterpret_cast"
+"requires"
+"return"
+"short"
+"signed"
+"sizeof"
+"static"
+"static_assert"
+"static_cast"
+"struct"
+"switch"
+"template"
+"this"
+"thread_local"
+"throw"
+"true"
+"try"
+"typedef"
+"typeid"
+"typename"
+"union"
+"unsigned"
+"using"
+"virtual"
+"void"
+"volatile"
+"wchar_t"
+"while"
+"xor"
+"xor_eq"
+"if"
+"elif"
+"else"
+"endif"
+"defined"
+"ifdef"
+"ifndef"
+"define"
+"undef"
+"include"
+"line"
+"error"
+"pragma"
+"override"
+"final"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/standalone/StandaloneFuzzTargetMain.c b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/standalone/StandaloneFuzzTargetMain.c
new file mode 100644
index 00000000..0d76ea49
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/standalone/StandaloneFuzzTargetMain.c
@@ -0,0 +1,41 @@
+/*===- StandaloneFuzzTargetMain.c - standalone main() for fuzz targets. ---===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// This main() function can be linked to a fuzz target (i.e. a library
+// that exports LLVMFuzzerTestOneInput() and possibly LLVMFuzzerInitialize())
+// instead of libFuzzer. This main() function will not perform any fuzzing
+// but will simply feed all input files one by one to the fuzz target.
+//
+// Use this file to provide reproducers for bugs when linking against libFuzzer
+// or other fuzzing engine is undesirable.
+//===----------------------------------------------------------------------===*/
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size);
+__attribute__((weak)) extern int LLVMFuzzerInitialize(int *argc, char ***argv);
+int main(int argc, char **argv) {
+  fprintf(stderr, "StandaloneFuzzTargetMain: running %d inputs\n", argc - 1);
+  if (LLVMFuzzerInitialize)
+    LLVMFuzzerInitialize(&argc, &argv);
+  for (int i = 1; i < argc; i++) {
+    fprintf(stderr, "Running: %s\n", argv[i]);
+    FILE *f = fopen(argv[i], "r");
+    assert(f);
+    fseek(f, 0, SEEK_END);
+    size_t len = ftell(f);
+    fseek(f, 0, SEEK_SET);
+    unsigned char *buf = (unsigned char*)malloc(len);
+    size_t n_read = fread(buf, 1, len, f);
+    assert(n_read == len);
+    LLVMFuzzerTestOneInput(buf, len);
+    free(buf);
+    fprintf(stderr, "Done:    %s: (%zd bytes)\n", argv[i], n_read);
+  }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AFLDriverTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AFLDriverTest.cpp
new file mode 100644
index 00000000..3dd0b611
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AFLDriverTest.cpp
@@ -0,0 +1,22 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Contains dummy functions used to avoid dependency on AFL.
+#include <stdint.h>
+#include <stdlib.h>
+
+extern "C" void __afl_manual_init() {}
+
+extern "C" int __afl_persistent_loop(unsigned int) {
+  return 0;
+}
+
+// This declaration exists to prevent the Darwin linker
+// from complaining about this being a missing weak symbol.
+extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) {
+  return 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AbsNegAndConstant64Test.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AbsNegAndConstant64Test.cpp
new file mode 100644
index 00000000..57748143
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AbsNegAndConstant64Test.cpp
@@ -0,0 +1,23 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// abs(x) < 0 and y == Const puzzle, 64-bit variant.
+#include <cstring>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstdio>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 16) return 0;
+  int64_t x;
+  uint64_t y;
+  memcpy(&x, Data, sizeof(x));
+  memcpy(&y, Data + sizeof(x), sizeof(y));
+  if (labs(x) < 0 && y == 0xbaddcafedeadbeefUL) {
+    printf("BINGO; Found the target, exiting; x = 0x%lx y 0x%lx\n", x, y);
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AbsNegAndConstantTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AbsNegAndConstantTest.cpp
new file mode 100644
index 00000000..69075a45
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AbsNegAndConstantTest.cpp
@@ -0,0 +1,23 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// abs(x) < 0 and y == Const puzzle.
+#include <cstring>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstdio>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 8) return 0;
+  int x;
+  unsigned y;
+  memcpy(&x, Data, sizeof(x));
+  memcpy(&y, Data + sizeof(x), sizeof(y));
+  if (abs(x) < 0 && y == 0xbaddcafe) {
+    printf("BINGO; Found the target, exiting; x = 0x%x y 0x%x\n", x, y);
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AccumulateAllocationsTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AccumulateAllocationsTest.cpp
new file mode 100644
index 00000000..604d8fa2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/AccumulateAllocationsTest.cpp
@@ -0,0 +1,17 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test with a more mallocs than frees, but no leak.
+#include <cstdint>
+#include <cstddef>
+
+const int kAllocatedPointersSize = 10000;
+int NumAllocatedPointers = 0;
+int *AllocatedPointers[kAllocatedPointersSize];
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (NumAllocatedPointers < kAllocatedPointersSize)
+    AllocatedPointers[NumAllocatedPointers++] = new int;
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/BufferOverflowOnInput.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/BufferOverflowOnInput.cpp
new file mode 100644
index 00000000..b9d14052
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/BufferOverflowOnInput.cpp
@@ -0,0 +1,23 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile bool SeedLargeBuffer;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  if (Size >= 4)
+    SeedLargeBuffer = true;
+  if (Size == 3 && SeedLargeBuffer && Data[3]) {
+    std::cout << "Woops, reading Data[3] w/o crashing\n";
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CMakeLists.txt
new file mode 100644
index 00000000..c0457746
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CMakeLists.txt
@@ -0,0 +1,217 @@
+# Build all these tests with -O0, otherwise optimizations may merge some
+# basic blocks and we'll fail to discover the targets.
+# We change the flags for every build type because we might be doing
+# a multi-configuration build (e.g. Xcode) where CMAKE_BUILD_TYPE doesn't
+# mean anything.
+set(variables_to_filter
+  CMAKE_CXX_FLAGS_RELEASE
+  CMAKE_CXX_FLAGS_DEBUG
+  CMAKE_CXX_FLAGS_RELWITHDEBINFO
+  CMAKE_CXX_FLAGS_MINSIZEREL
+  LIBFUZZER_FLAGS_BASE
+  )
+foreach (VARNAME ${variables_to_filter})
+  string(REPLACE " " ";" BUILD_FLAGS_AS_LIST "${${VARNAME}}")
+  set(new_flags "")
+  foreach (flag ${BUILD_FLAGS_AS_LIST})
+    # NOTE: Use of XX here is to avoid a CMake warning due to CMP0054
+    if (NOT ("XX${flag}" MATCHES "XX-O[0123s]"))
+      set(new_flags "${new_flags} ${flag}")
+    else()
+      set(new_flags "${new_flags} -O0")
+    endif()
+  endforeach()
+  set(${VARNAME} "${new_flags}")
+endforeach()
+
+# Enable the coverage instrumentation (it is disabled for the Fuzzer lib).
+set(CMAKE_CXX_FLAGS "${LIBFUZZER_FLAGS_BASE} -fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp,trace-div,trace-gep -g")
+
+# add_libfuzzer_test(<name>
+#   SOURCES source0.cpp [source1.cpp ...]
+#   )
+#
+#   Declares a LibFuzzer test executable with target name LLVMFuzzer-<name>.
+#
+#   One or more source files to be compiled into the binary must be declared
+#   after the SOURCES keyword.
+function(add_libfuzzer_test name)
+  set(multi_arg_options "SOURCES")
+  cmake_parse_arguments(
+    "add_libfuzzer_test" "" "" "${multi_arg_options}" ${ARGN})
+  if ("${add_libfuzzer_test_SOURCES}" STREQUAL "")
+    message(FATAL_ERROR "Source files must be specified")
+  endif()
+  add_executable(LLVMFuzzer-${name}
+    ${add_libfuzzer_test_SOURCES}
+    )
+  target_link_libraries(LLVMFuzzer-${name} LLVMFuzzer)
+  # Place binary where llvm-lit expects to find it
+  set_target_properties(LLVMFuzzer-${name}
+    PROPERTIES RUNTIME_OUTPUT_DIRECTORY
+    "${CMAKE_BINARY_DIR}/lib/Fuzzer/test"
+    )
+  set(TestBinaries ${TestBinaries} LLVMFuzzer-${name} PARENT_SCOPE)
+endfunction()
+
+# Variable to keep track of all test targets
+set(TestBinaries)
+
+###############################################################################
+# Basic tests
+###############################################################################
+
+set(Tests
+  AbsNegAndConstantTest
+  AbsNegAndConstant64Test
+  AccumulateAllocationsTest
+  BufferOverflowOnInput
+  CallerCalleeTest
+  CounterTest
+  CustomCrossOverTest
+  CustomMutatorTest
+  DivTest
+  EmptyTest
+  FourIndependentBranchesTest
+  FullCoverageSetTest
+  InitializeTest
+  MemcmpTest
+  LeakTest
+  LeakTimeoutTest
+  LoadTest
+  NullDerefTest
+  NullDerefOnEmptyTest
+  NthRunCrashTest
+  OneHugeAllocTest
+  OutOfMemoryTest
+  OutOfMemorySingleLargeMallocTest
+  RepeatedMemcmp
+  RepeatedBytesTest
+  SimpleCmpTest
+  SimpleDictionaryTest
+  SimpleHashTest
+  SimpleTest
+  SimpleThreadedTest
+  SingleMemcmpTest
+  SingleStrcmpTest
+  SingleStrncmpTest
+  SpamyTest
+  ShrinkControlFlowTest
+  ShrinkValueProfileTest
+  StrcmpTest
+  StrncmpOOBTest
+  StrncmpTest
+  StrstrTest
+  SwapCmpTest
+  SwitchTest
+  Switch2Test
+  ThreadedLeakTest
+  ThreadedTest
+  TimeoutTest
+  TimeoutEmptyTest
+  TraceMallocTest
+  )
+
+if(APPLE)
+  # LeakSanitizer is not supported on OSX right now
+  set(HAS_LSAN 0)
+  message(WARNING "LeakSanitizer is not supported on Apple platforms."
+    " Building and running LibFuzzer LeakSanitizer tests is disabled."
+    )
+else()
+  set(HAS_LSAN 1)
+endif()
+
+foreach(Test ${Tests})
+  add_libfuzzer_test(${Test} SOURCES ${Test}.cpp)
+endforeach()
+
+
+###############################################################################
+# Unit tests
+###############################################################################
+
+add_executable(LLVMFuzzer-Unittest
+  FuzzerUnittest.cpp
+  )
+
+add_executable(LLVMFuzzer-StandaloneInitializeTest
+  InitializeTest.cpp
+  ../standalone/StandaloneFuzzTargetMain.c
+  )
+
+target_link_libraries(LLVMFuzzer-Unittest
+  gtest
+  gtest_main
+  LLVMFuzzerNoMain
+  )
+
+target_include_directories(LLVMFuzzer-Unittest PRIVATE
+  "${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest/include"
+  )
+
+set(TestBinaries ${TestBinaries} LLVMFuzzer-Unittest)
+set_target_properties(LLVMFuzzer-Unittest
+  PROPERTIES RUNTIME_OUTPUT_DIRECTORY
+  "${CMAKE_CURRENT_BINARY_DIR}"
+)
+
+set(TestBinaries ${TestBinaries} LLVMFuzzer-StandaloneInitializeTest)
+set_target_properties(LLVMFuzzer-StandaloneInitializeTest
+  PROPERTIES RUNTIME_OUTPUT_DIRECTORY
+  "${CMAKE_CURRENT_BINARY_DIR}"
+)
+
+###############################################################################
+# Additional tests
+###############################################################################
+
+include_directories(..)
+
+# add_subdirectory(uninstrumented)
+add_subdirectory(no-coverage)
+add_subdirectory(ubsan)
+
+add_library(LLVMFuzzer-DSO1 SHARED DSO1.cpp)
+add_library(LLVMFuzzer-DSO2 SHARED DSO2.cpp)
+
+add_executable(LLVMFuzzer-DSOTest
+  DSOTestMain.cpp
+  DSOTestExtra.cpp)
+
+target_link_libraries(LLVMFuzzer-DSOTest
+  LLVMFuzzer-DSO1
+  LLVMFuzzer-DSO2
+  LLVMFuzzer
+  )
+
+set_target_properties(LLVMFuzzer-DSOTest PROPERTIES RUNTIME_OUTPUT_DIRECTORY
+  "${CMAKE_BINARY_DIR}/lib/Fuzzer/test")
+set_target_properties(LLVMFuzzer-DSO1 PROPERTIES LIBRARY_OUTPUT_DIRECTORY
+  "${CMAKE_BINARY_DIR}/lib/Fuzzer/lib")
+set_target_properties(LLVMFuzzer-DSO2 PROPERTIES LIBRARY_OUTPUT_DIRECTORY
+  "${CMAKE_BINARY_DIR}/lib/Fuzzer/lib")
+
+set(TestBinaries ${TestBinaries} LLVMFuzzer-DSOTest)
+
+###############################################################################
+# Configure lit to run the tests
+#
+# Note this is done after declaring all tests so we can inform lit if any tests
+# need to be disabled.
+###############################################################################
+
+configure_lit_site_cfg(
+  ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
+  ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
+  )
+
+configure_lit_site_cfg(
+  ${CMAKE_CURRENT_SOURCE_DIR}/unit/lit.site.cfg.in
+  ${CMAKE_CURRENT_BINARY_DIR}/unit/lit.site.cfg
+  )
+
+add_lit_testsuite(check-fuzzer "Running Fuzzer tests"
+    ${CMAKE_CURRENT_BINARY_DIR}
+    DEPENDS ${TestBinaries} FileCheck not
+    )
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CallerCalleeTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CallerCalleeTest.cpp
new file mode 100644
index 00000000..3ec025d0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CallerCalleeTest.cpp
@@ -0,0 +1,59 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer.
+// Try to find the target using the indirect caller-callee pairs.
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstring>
+#include <iostream>
+
+typedef void (*F)();
+static F t[256];
+
+void f34() {
+  std::cerr << "BINGO\n";
+  exit(1);
+}
+void f23() { t[(unsigned)'d'] = f34;}
+void f12() { t[(unsigned)'c'] = f23;}
+void f01() { t[(unsigned)'b'] = f12;}
+void f00() {}
+
+static F t0[256] = {
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+  f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
+};
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 4) return 0;
+  // Spoof the counters.
+  for (int i = 0; i < 200; i++) {
+    f23();
+    f12();
+    f01();
+  }
+  memcpy(t, t0, sizeof(t));
+  t[(unsigned)'a'] = f01;
+  t[Data[0]]();
+  t[Data[1]]();
+  t[Data[2]]();
+  t[Data[3]]();
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CounterTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CounterTest.cpp
new file mode 100644
index 00000000..4917934c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CounterTest.cpp
@@ -0,0 +1,18 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test for a fuzzer: must find the case where a particular basic block is
+// executed many times.
+#include <iostream>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  int Num = 0;
+  for (size_t i = 0; i < Size; i++)
+    if (Data[i] == 'A' + i)
+      Num++;
+  if (Num >= 4) {
+    std::cerr <<  "BINGO!\n";
+    exit(1);
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CustomCrossOverTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CustomCrossOverTest.cpp
new file mode 100644
index 00000000..b624088b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CustomCrossOverTest.cpp
@@ -0,0 +1,63 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a cutom mutator.
+#include <assert.h>
+#include <cstddef>
+#include <cstdint>
+#include <cstdlib>
+#include <iostream>
+#include <random>
+#include <string.h>
+
+#include "FuzzerInterface.h"
+
+static const char *Separator = "-_^_-";
+static const char *Target = "012-_^_-abc";
+
+static volatile int sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  std::string Str(reinterpret_cast<const char *>(Data), Size);
+
+  // Ensure that two different elements exist in the corpus.
+  if (Size && Data[0] == '0') sink++;
+  if (Size && Data[0] == 'a') sink--;
+
+  if (Str.find(Target) != std::string::npos) {
+    std::cout << "BINGO; Found the target, exiting\n";
+    exit(1);
+  }
+  return 0;
+}
+
+extern "C" size_t LLVMFuzzerCustomCrossOver(const uint8_t *Data1, size_t Size1,
+                                            const uint8_t *Data2, size_t Size2,
+                                            uint8_t *Out, size_t MaxOutSize,
+                                            unsigned int Seed) {
+  static bool Printed;
+  static size_t SeparatorLen = strlen(Separator);
+
+  if (!Printed) {
+    std::cerr << "In LLVMFuzzerCustomCrossover\n";
+    Printed = true;
+  }
+
+  std::mt19937 R(Seed);
+
+  size_t Offset1 = 0;
+  size_t Len1 = R() % (Size1 - Offset1);
+  size_t Offset2 = 0;
+  size_t Len2 = R() % (Size2 - Offset2);
+  size_t Size = Len1 + Len2 + SeparatorLen;
+
+  if (Size > MaxOutSize)
+    return 0;
+
+  memcpy(Out, Data1 + Offset1, Len1);
+  memcpy(Out + Len1, Separator, SeparatorLen);
+  memcpy(Out + Len1 + SeparatorLen, Data2 + Offset2, Len2);
+
+  return Len1 + Len2 + SeparatorLen;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CustomMutatorTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CustomMutatorTest.cpp
new file mode 100644
index 00000000..4f84519a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/CustomMutatorTest.cpp
@@ -0,0 +1,38 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a cutom mutator.
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+#include "FuzzerInterface.h"
+
+static volatile int Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        std::cout << "BINGO; Found the target, exiting\n";
+        exit(1);
+      }
+    }
+  }
+  return 0;
+}
+
+extern "C" size_t LLVMFuzzerCustomMutator(uint8_t *Data, size_t Size,
+                                          size_t MaxSize, unsigned int Seed) {
+  static bool Printed;
+  if (!Printed) {
+    std::cerr << "In LLVMFuzzerCustomMutator\n";
+    Printed = true;
+  }
+  return LLVMFuzzerMutate(Data, Size, MaxSize);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSO1.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSO1.cpp
new file mode 100644
index 00000000..4a293890
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSO1.cpp
@@ -0,0 +1,12 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Source code for a simple DSO.
+
+int DSO1(int a) {
+  if (a < 123456)
+    return 0;
+  return 1;
+}
+
+void Uncovered1() { }
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSO2.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSO2.cpp
new file mode 100644
index 00000000..04b308d1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSO2.cpp
@@ -0,0 +1,12 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Source code for a simple DSO.
+
+int DSO2(int a) {
+  if (a < 3598235)
+    return 0;
+  return 1;
+}
+
+void Uncovered2() {}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSOTestExtra.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSOTestExtra.cpp
new file mode 100644
index 00000000..a2274d07
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSOTestExtra.cpp
@@ -0,0 +1,11 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Source code for a simple DSO.
+
+int DSOTestExtra(int a) {
+  if (a < 452345)
+    return 0;
+  return 1;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSOTestMain.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSOTestMain.cpp
new file mode 100644
index 00000000..3e225d88
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DSOTestMain.cpp
@@ -0,0 +1,31 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Source code for a simple DSO.
+
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <cstdio>
+extern int DSO1(int a);
+extern int DSO2(int a);
+extern int DSOTestExtra(int a);
+
+static volatile int *nil = 0;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  int x, y, z;
+  if (Size < sizeof(int) * 3) {
+    x = y = z = 0;
+  } else {
+    memcpy(&x, Data + 0 * sizeof(int), sizeof(int));
+    memcpy(&y, Data + 1 * sizeof(int), sizeof(int));
+    memcpy(&z, Data + 2 * sizeof(int), sizeof(int));
+  }
+  int sum = DSO1(x) + DSO2(y) + (z ? DSOTestExtra(z) : 0);
+  if (sum == 3) {
+    fprintf(stderr, "BINGO %d %d %d\n", x, y, z);
+    *nil = 0;
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DivTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DivTest.cpp
new file mode 100644
index 00000000..63f6960f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/DivTest.cpp
@@ -0,0 +1,20 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer: find the interesting argument for div.
+#include <assert.h>
+#include <cstdint>
+#include <cstring>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 4) return 0;
+  int a;
+  memcpy(&a, Data, 4);
+  Sink = 12345678 / (987654 - a);
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/EmptyTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/EmptyTest.cpp
new file mode 100644
index 00000000..5e843308
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/EmptyTest.cpp
@@ -0,0 +1,11 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+// A fuzzer with empty target function.
+
+#include <cstdint>
+#include <cstdlib>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FourIndependentBranchesTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FourIndependentBranchesTest.cpp
new file mode 100644
index 00000000..62b3be76
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FourIndependentBranchesTest.cpp
@@ -0,0 +1,22 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the string "FUZZ".
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  int bits = 0;
+  if (Size > 0 && Data[0] == 'F') bits |= 1;
+  if (Size > 1 && Data[1] == 'U') bits |= 2;
+  if (Size > 2 && Data[2] == 'Z') bits |= 4;
+  if (Size > 3 && Data[3] == 'Z') bits |= 8;
+  if (bits == 15) {
+    std::cerr <<  "BINGO!\n";
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FullCoverageSetTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FullCoverageSetTest.cpp
new file mode 100644
index 00000000..415e0b47
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FullCoverageSetTest.cpp
@@ -0,0 +1,24 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the string "FUZZER".
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  int bits = 0;
+  if (Size > 0 && Data[0] == 'F') bits |= 1;
+  if (Size > 1 && Data[1] == 'U') bits |= 2;
+  if (Size > 2 && Data[2] == 'Z') bits |= 4;
+  if (Size > 3 && Data[3] == 'Z') bits |= 8;
+  if (Size > 4 && Data[4] == 'E') bits |= 16;
+  if (Size > 5 && Data[5] == 'R') bits |= 32;
+  if (bits == 63) {
+    std::cerr <<  "BINGO!\n";
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FuzzerUnittest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FuzzerUnittest.cpp
new file mode 100644
index 00000000..4992ef57
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/FuzzerUnittest.cpp
@@ -0,0 +1,738 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Avoid ODR violations (LibFuzzer is built without ASan and this test is built
+// with ASan) involving C++ standard library types when using libcxx.
+#define _LIBCPP_HAS_NO_ASAN
+
+#include "FuzzerCorpus.h"
+#include "FuzzerInternal.h"
+#include "FuzzerDictionary.h"
+#include "FuzzerMerge.h"
+#include "FuzzerMutate.h"
+#include "FuzzerRandom.h"
+#include "gtest/gtest.h"
+#include <memory>
+#include <set>
+
+using namespace fuzzer;
+
+// For now, have LLVMFuzzerTestOneInput just to make it link.
+// Later we may want to make unittests that actually call LLVMFuzzerTestOneInput.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  abort();
+}
+
+TEST(Fuzzer, CrossOver) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  Unit A({0, 1, 2}), B({5, 6, 7});
+  Unit C;
+  Unit Expected[] = {
+       { 0 },
+       { 0, 1 },
+       { 0, 5 },
+       { 0, 1, 2 },
+       { 0, 1, 5 },
+       { 0, 5, 1 },
+       { 0, 5, 6 },
+       { 0, 1, 2, 5 },
+       { 0, 1, 5, 2 },
+       { 0, 1, 5, 6 },
+       { 0, 5, 1, 2 },
+       { 0, 5, 1, 6 },
+       { 0, 5, 6, 1 },
+       { 0, 5, 6, 7 },
+       { 0, 1, 2, 5, 6 },
+       { 0, 1, 5, 2, 6 },
+       { 0, 1, 5, 6, 2 },
+       { 0, 1, 5, 6, 7 },
+       { 0, 5, 1, 2, 6 },
+       { 0, 5, 1, 6, 2 },
+       { 0, 5, 1, 6, 7 },
+       { 0, 5, 6, 1, 2 },
+       { 0, 5, 6, 1, 7 },
+       { 0, 5, 6, 7, 1 },
+       { 0, 1, 2, 5, 6, 7 },
+       { 0, 1, 5, 2, 6, 7 },
+       { 0, 1, 5, 6, 2, 7 },
+       { 0, 1, 5, 6, 7, 2 },
+       { 0, 5, 1, 2, 6, 7 },
+       { 0, 5, 1, 6, 2, 7 },
+       { 0, 5, 1, 6, 7, 2 },
+       { 0, 5, 6, 1, 2, 7 },
+       { 0, 5, 6, 1, 7, 2 },
+       { 0, 5, 6, 7, 1, 2 }
+  };
+  for (size_t Len = 1; Len < 8; Len++) {
+    std::set<Unit> FoundUnits, ExpectedUnitsWitThisLength;
+    for (int Iter = 0; Iter < 3000; Iter++) {
+      C.resize(Len);
+      size_t NewSize = MD.CrossOver(A.data(), A.size(), B.data(), B.size(),
+                                    C.data(), C.size());
+      C.resize(NewSize);
+      FoundUnits.insert(C);
+    }
+    for (const Unit &U : Expected)
+      if (U.size() <= Len)
+        ExpectedUnitsWitThisLength.insert(U);
+    EXPECT_EQ(ExpectedUnitsWitThisLength, FoundUnits);
+  }
+}
+
+TEST(Fuzzer, Hash) {
+  uint8_t A[] = {'a', 'b', 'c'};
+  fuzzer::Unit U(A, A + sizeof(A));
+  EXPECT_EQ("a9993e364706816aba3e25717850c26c9cd0d89d", fuzzer::Hash(U));
+  U.push_back('d');
+  EXPECT_EQ("81fe8bfe87576c3ecb22426f8e57847382917acf", fuzzer::Hash(U));
+}
+
+typedef size_t (MutationDispatcher::*Mutator)(uint8_t *Data, size_t Size,
+                                              size_t MaxSize);
+
+void TestEraseBytes(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  uint8_t REM0[8] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t REM1[8] = {0x00, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t REM2[8] = {0x00, 0x11, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t REM3[8] = {0x00, 0x11, 0x22, 0x44, 0x55, 0x66, 0x77};
+  uint8_t REM4[8] = {0x00, 0x11, 0x22, 0x33, 0x55, 0x66, 0x77};
+  uint8_t REM5[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x66, 0x77};
+  uint8_t REM6[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x77};
+  uint8_t REM7[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
+
+  uint8_t REM8[6] = {0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t REM9[6] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55};
+  uint8_t REM10[6] = {0x00, 0x11, 0x22, 0x55, 0x66, 0x77};
+
+  uint8_t REM11[5] = {0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t REM12[5] = {0x00, 0x11, 0x22, 0x33, 0x44};
+  uint8_t REM13[5] = {0x00, 0x44, 0x55, 0x66, 0x77};
+
+
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  int FoundMask = 0;
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+    size_t NewSize = (MD.*M)(T, sizeof(T), sizeof(T));
+    if (NewSize == 7 && !memcmp(REM0, T, 7)) FoundMask |= 1 << 0;
+    if (NewSize == 7 && !memcmp(REM1, T, 7)) FoundMask |= 1 << 1;
+    if (NewSize == 7 && !memcmp(REM2, T, 7)) FoundMask |= 1 << 2;
+    if (NewSize == 7 && !memcmp(REM3, T, 7)) FoundMask |= 1 << 3;
+    if (NewSize == 7 && !memcmp(REM4, T, 7)) FoundMask |= 1 << 4;
+    if (NewSize == 7 && !memcmp(REM5, T, 7)) FoundMask |= 1 << 5;
+    if (NewSize == 7 && !memcmp(REM6, T, 7)) FoundMask |= 1 << 6;
+    if (NewSize == 7 && !memcmp(REM7, T, 7)) FoundMask |= 1 << 7;
+
+    if (NewSize == 6 && !memcmp(REM8, T, 6)) FoundMask |= 1 << 8;
+    if (NewSize == 6 && !memcmp(REM9, T, 6)) FoundMask |= 1 << 9;
+    if (NewSize == 6 && !memcmp(REM10, T, 6)) FoundMask |= 1 << 10;
+
+    if (NewSize == 5 && !memcmp(REM11, T, 5)) FoundMask |= 1 << 11;
+    if (NewSize == 5 && !memcmp(REM12, T, 5)) FoundMask |= 1 << 12;
+    if (NewSize == 5 && !memcmp(REM13, T, 5)) FoundMask |= 1 << 13;
+  }
+  EXPECT_EQ(FoundMask, (1 << 14) - 1);
+}
+
+TEST(FuzzerMutate, EraseBytes1) {
+  TestEraseBytes(&MutationDispatcher::Mutate_EraseBytes, 200);
+}
+TEST(FuzzerMutate, EraseBytes2) {
+  TestEraseBytes(&MutationDispatcher::Mutate, 2000);
+}
+
+void TestInsertByte(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  int FoundMask = 0;
+  uint8_t INS0[8] = {0xF1, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
+  uint8_t INS1[8] = {0x00, 0xF2, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
+  uint8_t INS2[8] = {0x00, 0x11, 0xF3, 0x22, 0x33, 0x44, 0x55, 0x66};
+  uint8_t INS3[8] = {0x00, 0x11, 0x22, 0xF4, 0x33, 0x44, 0x55, 0x66};
+  uint8_t INS4[8] = {0x00, 0x11, 0x22, 0x33, 0xF5, 0x44, 0x55, 0x66};
+  uint8_t INS5[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0xF6, 0x55, 0x66};
+  uint8_t INS6[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0xF7, 0x66};
+  uint8_t INS7[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0xF8};
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
+    size_t NewSize = (MD.*M)(T, 7, 8);
+    if (NewSize == 8 && !memcmp(INS0, T, 8)) FoundMask |= 1 << 0;
+    if (NewSize == 8 && !memcmp(INS1, T, 8)) FoundMask |= 1 << 1;
+    if (NewSize == 8 && !memcmp(INS2, T, 8)) FoundMask |= 1 << 2;
+    if (NewSize == 8 && !memcmp(INS3, T, 8)) FoundMask |= 1 << 3;
+    if (NewSize == 8 && !memcmp(INS4, T, 8)) FoundMask |= 1 << 4;
+    if (NewSize == 8 && !memcmp(INS5, T, 8)) FoundMask |= 1 << 5;
+    if (NewSize == 8 && !memcmp(INS6, T, 8)) FoundMask |= 1 << 6;
+    if (NewSize == 8 && !memcmp(INS7, T, 8)) FoundMask |= 1 << 7;
+  }
+  EXPECT_EQ(FoundMask, 255);
+}
+
+TEST(FuzzerMutate, InsertByte1) {
+  TestInsertByte(&MutationDispatcher::Mutate_InsertByte, 1 << 15);
+}
+TEST(FuzzerMutate, InsertByte2) {
+  TestInsertByte(&MutationDispatcher::Mutate, 1 << 17);
+}
+
+void TestInsertRepeatedBytes(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  int FoundMask = 0;
+  uint8_t INS0[7] = {0x00, 0x11, 0x22, 0x33, 'a', 'a', 'a'};
+  uint8_t INS1[7] = {0x00, 0x11, 0x22, 'a', 'a', 'a', 0x33};
+  uint8_t INS2[7] = {0x00, 0x11, 'a', 'a', 'a', 0x22, 0x33};
+  uint8_t INS3[7] = {0x00, 'a', 'a', 'a', 0x11, 0x22, 0x33};
+  uint8_t INS4[7] = {'a', 'a', 'a', 0x00, 0x11, 0x22, 0x33};
+
+  uint8_t INS5[8] = {0x00, 0x11, 0x22, 0x33, 'b', 'b', 'b', 'b'};
+  uint8_t INS6[8] = {0x00, 0x11, 0x22, 'b', 'b', 'b', 'b', 0x33};
+  uint8_t INS7[8] = {0x00, 0x11, 'b', 'b', 'b', 'b', 0x22, 0x33};
+  uint8_t INS8[8] = {0x00, 'b', 'b', 'b', 'b', 0x11, 0x22, 0x33};
+  uint8_t INS9[8] = {'b', 'b', 'b', 'b', 0x00, 0x11, 0x22, 0x33};
+
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[8] = {0x00, 0x11, 0x22, 0x33};
+    size_t NewSize = (MD.*M)(T, 4, 8);
+    if (NewSize == 7 && !memcmp(INS0, T, 7)) FoundMask |= 1 << 0;
+    if (NewSize == 7 && !memcmp(INS1, T, 7)) FoundMask |= 1 << 1;
+    if (NewSize == 7 && !memcmp(INS2, T, 7)) FoundMask |= 1 << 2;
+    if (NewSize == 7 && !memcmp(INS3, T, 7)) FoundMask |= 1 << 3;
+    if (NewSize == 7 && !memcmp(INS4, T, 7)) FoundMask |= 1 << 4;
+
+    if (NewSize == 8 && !memcmp(INS5, T, 8)) FoundMask |= 1 << 5;
+    if (NewSize == 8 && !memcmp(INS6, T, 8)) FoundMask |= 1 << 6;
+    if (NewSize == 8 && !memcmp(INS7, T, 8)) FoundMask |= 1 << 7;
+    if (NewSize == 8 && !memcmp(INS8, T, 8)) FoundMask |= 1 << 8;
+    if (NewSize == 8 && !memcmp(INS9, T, 8)) FoundMask |= 1 << 9;
+
+  }
+  EXPECT_EQ(FoundMask, (1 << 10) - 1);
+}
+
+TEST(FuzzerMutate, InsertRepeatedBytes1) {
+  TestInsertRepeatedBytes(&MutationDispatcher::Mutate_InsertRepeatedBytes, 10000);
+}
+TEST(FuzzerMutate, InsertRepeatedBytes2) {
+  TestInsertRepeatedBytes(&MutationDispatcher::Mutate, 300000);
+}
+
+void TestChangeByte(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  int FoundMask = 0;
+  uint8_t CH0[8] = {0xF0, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH1[8] = {0x00, 0xF1, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH2[8] = {0x00, 0x11, 0xF2, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH3[8] = {0x00, 0x11, 0x22, 0xF3, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH4[8] = {0x00, 0x11, 0x22, 0x33, 0xF4, 0x55, 0x66, 0x77};
+  uint8_t CH5[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0xF5, 0x66, 0x77};
+  uint8_t CH6[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0xF5, 0x77};
+  uint8_t CH7[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0xF7};
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[9] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+    size_t NewSize = (MD.*M)(T, 8, 9);
+    if (NewSize == 8 && !memcmp(CH0, T, 8)) FoundMask |= 1 << 0;
+    if (NewSize == 8 && !memcmp(CH1, T, 8)) FoundMask |= 1 << 1;
+    if (NewSize == 8 && !memcmp(CH2, T, 8)) FoundMask |= 1 << 2;
+    if (NewSize == 8 && !memcmp(CH3, T, 8)) FoundMask |= 1 << 3;
+    if (NewSize == 8 && !memcmp(CH4, T, 8)) FoundMask |= 1 << 4;
+    if (NewSize == 8 && !memcmp(CH5, T, 8)) FoundMask |= 1 << 5;
+    if (NewSize == 8 && !memcmp(CH6, T, 8)) FoundMask |= 1 << 6;
+    if (NewSize == 8 && !memcmp(CH7, T, 8)) FoundMask |= 1 << 7;
+  }
+  EXPECT_EQ(FoundMask, 255);
+}
+
+TEST(FuzzerMutate, ChangeByte1) {
+  TestChangeByte(&MutationDispatcher::Mutate_ChangeByte, 1 << 15);
+}
+TEST(FuzzerMutate, ChangeByte2) {
+  TestChangeByte(&MutationDispatcher::Mutate, 1 << 17);
+}
+
+void TestChangeBit(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  int FoundMask = 0;
+  uint8_t CH0[8] = {0x01, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH1[8] = {0x00, 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH2[8] = {0x00, 0x11, 0x02, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH3[8] = {0x00, 0x11, 0x22, 0x37, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH4[8] = {0x00, 0x11, 0x22, 0x33, 0x54, 0x55, 0x66, 0x77};
+  uint8_t CH5[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x54, 0x66, 0x77};
+  uint8_t CH6[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x76, 0x77};
+  uint8_t CH7[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0xF7};
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[9] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+    size_t NewSize = (MD.*M)(T, 8, 9);
+    if (NewSize == 8 && !memcmp(CH0, T, 8)) FoundMask |= 1 << 0;
+    if (NewSize == 8 && !memcmp(CH1, T, 8)) FoundMask |= 1 << 1;
+    if (NewSize == 8 && !memcmp(CH2, T, 8)) FoundMask |= 1 << 2;
+    if (NewSize == 8 && !memcmp(CH3, T, 8)) FoundMask |= 1 << 3;
+    if (NewSize == 8 && !memcmp(CH4, T, 8)) FoundMask |= 1 << 4;
+    if (NewSize == 8 && !memcmp(CH5, T, 8)) FoundMask |= 1 << 5;
+    if (NewSize == 8 && !memcmp(CH6, T, 8)) FoundMask |= 1 << 6;
+    if (NewSize == 8 && !memcmp(CH7, T, 8)) FoundMask |= 1 << 7;
+  }
+  EXPECT_EQ(FoundMask, 255);
+}
+
+TEST(FuzzerMutate, ChangeBit1) {
+  TestChangeBit(&MutationDispatcher::Mutate_ChangeBit, 1 << 16);
+}
+TEST(FuzzerMutate, ChangeBit2) {
+  TestChangeBit(&MutationDispatcher::Mutate, 1 << 18);
+}
+
+void TestShuffleBytes(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  int FoundMask = 0;
+  uint8_t CH0[7] = {0x00, 0x22, 0x11, 0x33, 0x44, 0x55, 0x66};
+  uint8_t CH1[7] = {0x11, 0x00, 0x33, 0x22, 0x44, 0x55, 0x66};
+  uint8_t CH2[7] = {0x00, 0x33, 0x11, 0x22, 0x44, 0x55, 0x66};
+  uint8_t CH3[7] = {0x00, 0x11, 0x22, 0x44, 0x55, 0x66, 0x33};
+  uint8_t CH4[7] = {0x00, 0x11, 0x22, 0x33, 0x55, 0x44, 0x66};
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[7] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
+    size_t NewSize = (MD.*M)(T, 7, 7);
+    if (NewSize == 7 && !memcmp(CH0, T, 7)) FoundMask |= 1 << 0;
+    if (NewSize == 7 && !memcmp(CH1, T, 7)) FoundMask |= 1 << 1;
+    if (NewSize == 7 && !memcmp(CH2, T, 7)) FoundMask |= 1 << 2;
+    if (NewSize == 7 && !memcmp(CH3, T, 7)) FoundMask |= 1 << 3;
+    if (NewSize == 7 && !memcmp(CH4, T, 7)) FoundMask |= 1 << 4;
+  }
+  EXPECT_EQ(FoundMask, 31);
+}
+
+TEST(FuzzerMutate, ShuffleBytes1) {
+  TestShuffleBytes(&MutationDispatcher::Mutate_ShuffleBytes, 1 << 16);
+}
+TEST(FuzzerMutate, ShuffleBytes2) {
+  TestShuffleBytes(&MutationDispatcher::Mutate, 1 << 20);
+}
+
+void TestCopyPart(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  int FoundMask = 0;
+  uint8_t CH0[7] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x00, 0x11};
+  uint8_t CH1[7] = {0x55, 0x66, 0x22, 0x33, 0x44, 0x55, 0x66};
+  uint8_t CH2[7] = {0x00, 0x55, 0x66, 0x33, 0x44, 0x55, 0x66};
+  uint8_t CH3[7] = {0x00, 0x11, 0x22, 0x00, 0x11, 0x22, 0x66};
+  uint8_t CH4[7] = {0x00, 0x11, 0x11, 0x22, 0x33, 0x55, 0x66};
+
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[7] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
+    size_t NewSize = (MD.*M)(T, 7, 7);
+    if (NewSize == 7 && !memcmp(CH0, T, 7)) FoundMask |= 1 << 0;
+    if (NewSize == 7 && !memcmp(CH1, T, 7)) FoundMask |= 1 << 1;
+    if (NewSize == 7 && !memcmp(CH2, T, 7)) FoundMask |= 1 << 2;
+    if (NewSize == 7 && !memcmp(CH3, T, 7)) FoundMask |= 1 << 3;
+    if (NewSize == 7 && !memcmp(CH4, T, 7)) FoundMask |= 1 << 4;
+  }
+
+  uint8_t CH5[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x00, 0x11, 0x22};
+  uint8_t CH6[8] = {0x22, 0x33, 0x44, 0x00, 0x11, 0x22, 0x33, 0x44};
+  uint8_t CH7[8] = {0x00, 0x11, 0x22, 0x00, 0x11, 0x22, 0x33, 0x44};
+  uint8_t CH8[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x22, 0x33, 0x44};
+  uint8_t CH9[8] = {0x00, 0x11, 0x22, 0x22, 0x33, 0x44, 0x33, 0x44};
+
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+    size_t NewSize = (MD.*M)(T, 5, 8);
+    if (NewSize == 8 && !memcmp(CH5, T, 8)) FoundMask |= 1 << 5;
+    if (NewSize == 8 && !memcmp(CH6, T, 8)) FoundMask |= 1 << 6;
+    if (NewSize == 8 && !memcmp(CH7, T, 8)) FoundMask |= 1 << 7;
+    if (NewSize == 8 && !memcmp(CH8, T, 8)) FoundMask |= 1 << 8;
+    if (NewSize == 8 && !memcmp(CH9, T, 8)) FoundMask |= 1 << 9;
+  }
+
+  EXPECT_EQ(FoundMask, 1023);
+}
+
+TEST(FuzzerMutate, CopyPart1) {
+  TestCopyPart(&MutationDispatcher::Mutate_CopyPart, 1 << 10);
+}
+TEST(FuzzerMutate, CopyPart2) {
+  TestCopyPart(&MutationDispatcher::Mutate, 1 << 13);
+}
+
+void TestAddWordFromDictionary(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  uint8_t Word1[4] = {0xAA, 0xBB, 0xCC, 0xDD};
+  uint8_t Word2[3] = {0xFF, 0xEE, 0xEF};
+  MD.AddWordToManualDictionary(Word(Word1, sizeof(Word1)));
+  MD.AddWordToManualDictionary(Word(Word2, sizeof(Word2)));
+  int FoundMask = 0;
+  uint8_t CH0[7] = {0x00, 0x11, 0x22, 0xAA, 0xBB, 0xCC, 0xDD};
+  uint8_t CH1[7] = {0x00, 0x11, 0xAA, 0xBB, 0xCC, 0xDD, 0x22};
+  uint8_t CH2[7] = {0x00, 0xAA, 0xBB, 0xCC, 0xDD, 0x11, 0x22};
+  uint8_t CH3[7] = {0xAA, 0xBB, 0xCC, 0xDD, 0x00, 0x11, 0x22};
+  uint8_t CH4[6] = {0x00, 0x11, 0x22, 0xFF, 0xEE, 0xEF};
+  uint8_t CH5[6] = {0x00, 0x11, 0xFF, 0xEE, 0xEF, 0x22};
+  uint8_t CH6[6] = {0x00, 0xFF, 0xEE, 0xEF, 0x11, 0x22};
+  uint8_t CH7[6] = {0xFF, 0xEE, 0xEF, 0x00, 0x11, 0x22};
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[7] = {0x00, 0x11, 0x22};
+    size_t NewSize = (MD.*M)(T, 3, 7);
+    if (NewSize == 7 && !memcmp(CH0, T, 7)) FoundMask |= 1 << 0;
+    if (NewSize == 7 && !memcmp(CH1, T, 7)) FoundMask |= 1 << 1;
+    if (NewSize == 7 && !memcmp(CH2, T, 7)) FoundMask |= 1 << 2;
+    if (NewSize == 7 && !memcmp(CH3, T, 7)) FoundMask |= 1 << 3;
+    if (NewSize == 6 && !memcmp(CH4, T, 6)) FoundMask |= 1 << 4;
+    if (NewSize == 6 && !memcmp(CH5, T, 6)) FoundMask |= 1 << 5;
+    if (NewSize == 6 && !memcmp(CH6, T, 6)) FoundMask |= 1 << 6;
+    if (NewSize == 6 && !memcmp(CH7, T, 6)) FoundMask |= 1 << 7;
+  }
+  EXPECT_EQ(FoundMask, 255);
+}
+
+TEST(FuzzerMutate, AddWordFromDictionary1) {
+  TestAddWordFromDictionary(
+      &MutationDispatcher::Mutate_AddWordFromManualDictionary, 1 << 15);
+}
+
+TEST(FuzzerMutate, AddWordFromDictionary2) {
+  TestAddWordFromDictionary(&MutationDispatcher::Mutate, 1 << 15);
+}
+
+void TestAddWordFromDictionaryWithHint(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+  uint8_t W[] = {0xAA, 0xBB, 0xCC, 0xDD, 0xFF, 0xEE, 0xEF};
+  size_t PosHint = 7777;
+  MD.AddWordToAutoDictionary({Word(W, sizeof(W)), PosHint});
+  int FoundMask = 0;
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[10000];
+    memset(T, 0, sizeof(T));
+    size_t NewSize = (MD.*M)(T, 9000, 10000);
+    if (NewSize >= PosHint + sizeof(W) &&
+        !memcmp(W, T + PosHint, sizeof(W)))
+      FoundMask = 1;
+  }
+  EXPECT_EQ(FoundMask, 1);
+}
+
+TEST(FuzzerMutate, AddWordFromDictionaryWithHint1) {
+  TestAddWordFromDictionaryWithHint(
+      &MutationDispatcher::Mutate_AddWordFromTemporaryAutoDictionary, 1 << 5);
+}
+
+TEST(FuzzerMutate, AddWordFromDictionaryWithHint2) {
+  TestAddWordFromDictionaryWithHint(&MutationDispatcher::Mutate, 1 << 10);
+}
+
+void TestChangeASCIIInteger(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+
+  uint8_t CH0[8] = {'1', '2', '3', '4', '5', '6', '7', '7'};
+  uint8_t CH1[8] = {'1', '2', '3', '4', '5', '6', '7', '9'};
+  uint8_t CH2[8] = {'2', '4', '6', '9', '1', '3', '5', '6'};
+  uint8_t CH3[8] = {'0', '6', '1', '7', '2', '8', '3', '9'};
+  int FoundMask = 0;
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[8] = {'1', '2', '3', '4', '5', '6', '7', '8'};
+    size_t NewSize = (MD.*M)(T, 8, 8);
+    /**/ if (NewSize == 8 && !memcmp(CH0, T, 8)) FoundMask |= 1 << 0;
+    else if (NewSize == 8 && !memcmp(CH1, T, 8)) FoundMask |= 1 << 1;
+    else if (NewSize == 8 && !memcmp(CH2, T, 8)) FoundMask |= 1 << 2;
+    else if (NewSize == 8 && !memcmp(CH3, T, 8)) FoundMask |= 1 << 3;
+    else if (NewSize == 8)                       FoundMask |= 1 << 4;
+  }
+  EXPECT_EQ(FoundMask, 31);
+}
+
+TEST(FuzzerMutate, ChangeASCIIInteger1) {
+  TestChangeASCIIInteger(&MutationDispatcher::Mutate_ChangeASCIIInteger,
+                         1 << 15);
+}
+
+TEST(FuzzerMutate, ChangeASCIIInteger2) {
+  TestChangeASCIIInteger(&MutationDispatcher::Mutate, 1 << 15);
+}
+
+void TestChangeBinaryInteger(Mutator M, int NumIter) {
+  std::unique_ptr<ExternalFunctions> t(new ExternalFunctions());
+  fuzzer::EF = t.get();
+  Random Rand(0);
+  MutationDispatcher MD(Rand, {});
+
+  uint8_t CH0[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x79};
+  uint8_t CH1[8] = {0x00, 0x11, 0x22, 0x31, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH2[8] = {0xff, 0x10, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH3[8] = {0x00, 0x11, 0x2a, 0x33, 0x44, 0x55, 0x66, 0x77};
+  uint8_t CH4[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x4f, 0x66, 0x77};
+  uint8_t CH5[8] = {0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88};
+  uint8_t CH6[8] = {0x00, 0x11, 0x22, 0x00, 0x00, 0x00, 0x08, 0x77}; // Size
+  uint8_t CH7[8] = {0x00, 0x08, 0x00, 0x33, 0x44, 0x55, 0x66, 0x77}; // Sw(Size)
+
+  int FoundMask = 0;
+  for (int i = 0; i < NumIter; i++) {
+    uint8_t T[8] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
+    size_t NewSize = (MD.*M)(T, 8, 8);
+    /**/ if (NewSize == 8 && !memcmp(CH0, T, 8)) FoundMask |= 1 << 0;
+    else if (NewSize == 8 && !memcmp(CH1, T, 8)) FoundMask |= 1 << 1;
+    else if (NewSize == 8 && !memcmp(CH2, T, 8)) FoundMask |= 1 << 2;
+    else if (NewSize == 8 && !memcmp(CH3, T, 8)) FoundMask |= 1 << 3;
+    else if (NewSize == 8 && !memcmp(CH4, T, 8)) FoundMask |= 1 << 4;
+    else if (NewSize == 8 && !memcmp(CH5, T, 8)) FoundMask |= 1 << 5;
+    else if (NewSize == 8 && !memcmp(CH6, T, 8)) FoundMask |= 1 << 6;
+    else if (NewSize == 8 && !memcmp(CH7, T, 8)) FoundMask |= 1 << 7;
+  }
+  EXPECT_EQ(FoundMask, 255);
+}
+
+TEST(FuzzerMutate, ChangeBinaryInteger1) {
+  TestChangeBinaryInteger(&MutationDispatcher::Mutate_ChangeBinaryInteger,
+                         1 << 12);
+}
+
+TEST(FuzzerMutate, ChangeBinaryInteger2) {
+  TestChangeBinaryInteger(&MutationDispatcher::Mutate, 1 << 15);
+}
+
+
+TEST(FuzzerDictionary, ParseOneDictionaryEntry) {
+  Unit U;
+  EXPECT_FALSE(ParseOneDictionaryEntry("", &U));
+  EXPECT_FALSE(ParseOneDictionaryEntry(" ", &U));
+  EXPECT_FALSE(ParseOneDictionaryEntry("\t  ", &U));
+  EXPECT_FALSE(ParseOneDictionaryEntry("  \" ", &U));
+  EXPECT_FALSE(ParseOneDictionaryEntry("  zz\" ", &U));
+  EXPECT_FALSE(ParseOneDictionaryEntry("  \"zz ", &U));
+  EXPECT_FALSE(ParseOneDictionaryEntry("  \"\" ", &U));
+  EXPECT_TRUE(ParseOneDictionaryEntry("\"a\"", &U));
+  EXPECT_EQ(U, Unit({'a'}));
+  EXPECT_TRUE(ParseOneDictionaryEntry("\"abc\"", &U));
+  EXPECT_EQ(U, Unit({'a', 'b', 'c'}));
+  EXPECT_TRUE(ParseOneDictionaryEntry("abc=\"abc\"", &U));
+  EXPECT_EQ(U, Unit({'a', 'b', 'c'}));
+  EXPECT_FALSE(ParseOneDictionaryEntry("\"\\\"", &U));
+  EXPECT_TRUE(ParseOneDictionaryEntry("\"\\\\\"", &U));
+  EXPECT_EQ(U, Unit({'\\'}));
+  EXPECT_TRUE(ParseOneDictionaryEntry("\"\\xAB\"", &U));
+  EXPECT_EQ(U, Unit({0xAB}));
+  EXPECT_TRUE(ParseOneDictionaryEntry("\"\\xABz\\xDE\"", &U));
+  EXPECT_EQ(U, Unit({0xAB, 'z', 0xDE}));
+  EXPECT_TRUE(ParseOneDictionaryEntry("\"#\"", &U));
+  EXPECT_EQ(U, Unit({'#'}));
+  EXPECT_TRUE(ParseOneDictionaryEntry("\"\\\"\"", &U));
+  EXPECT_EQ(U, Unit({'"'}));
+}
+
+TEST(FuzzerDictionary, ParseDictionaryFile) {
+  std::vector<Unit> Units;
+  EXPECT_FALSE(ParseDictionaryFile("zzz\n", &Units));
+  EXPECT_FALSE(ParseDictionaryFile("", &Units));
+  EXPECT_TRUE(ParseDictionaryFile("\n", &Units));
+  EXPECT_EQ(Units.size(), 0U);
+  EXPECT_TRUE(ParseDictionaryFile("#zzzz a b c d\n", &Units));
+  EXPECT_EQ(Units.size(), 0U);
+  EXPECT_TRUE(ParseDictionaryFile(" #zzzz\n", &Units));
+  EXPECT_EQ(Units.size(), 0U);
+  EXPECT_TRUE(ParseDictionaryFile("  #zzzz\n", &Units));
+  EXPECT_EQ(Units.size(), 0U);
+  EXPECT_TRUE(ParseDictionaryFile("  #zzzz\naaa=\"aa\"", &Units));
+  EXPECT_EQ(Units, std::vector<Unit>({Unit({'a', 'a'})}));
+  EXPECT_TRUE(
+      ParseDictionaryFile("  #zzzz\naaa=\"aa\"\n\nabc=\"abc\"", &Units));
+  EXPECT_EQ(Units,
+            std::vector<Unit>({Unit({'a', 'a'}), Unit({'a', 'b', 'c'})}));
+}
+
+TEST(FuzzerUtil, Base64) {
+  EXPECT_EQ("", Base64({}));
+  EXPECT_EQ("YQ==", Base64({'a'}));
+  EXPECT_EQ("eA==", Base64({'x'}));
+  EXPECT_EQ("YWI=", Base64({'a', 'b'}));
+  EXPECT_EQ("eHk=", Base64({'x', 'y'}));
+  EXPECT_EQ("YWJj", Base64({'a', 'b', 'c'}));
+  EXPECT_EQ("eHl6", Base64({'x', 'y', 'z'}));
+  EXPECT_EQ("YWJjeA==", Base64({'a', 'b', 'c', 'x'}));
+  EXPECT_EQ("YWJjeHk=", Base64({'a', 'b', 'c', 'x', 'y'}));
+  EXPECT_EQ("YWJjeHl6", Base64({'a', 'b', 'c', 'x', 'y', 'z'}));
+}
+
+TEST(Corpus, Distribution) {
+  Random Rand(0);
+  InputCorpus C("");
+  size_t N = 10;
+  size_t TriesPerUnit = 1<<16;
+  for (size_t i = 0; i < N; i++)
+    C.AddToCorpus(Unit{ static_cast<uint8_t>(i) }, 0);
+
+  std::vector<size_t> Hist(N);
+  for (size_t i = 0; i < N * TriesPerUnit; i++) {
+    Hist[C.ChooseUnitIdxToMutate(Rand)]++;
+  }
+  for (size_t i = 0; i < N; i++) {
+    // A weak sanity check that every unit gets invoked.
+    EXPECT_GT(Hist[i], TriesPerUnit / N / 3);
+  }
+}
+
+TEST(Merge, Bad) {
+  const char *kInvalidInputs[] = {
+    "",
+    "x",
+    "3\nx",
+    "2\n3",
+    "2\n2",
+    "2\n2\nA\n",
+    "2\n2\nA\nB\nC\n",
+    "0\n0\n",
+    "1\n1\nA\nDONE 0",
+    "1\n1\nA\nSTARTED 1",
+  };
+  Merger M;
+  for (auto S : kInvalidInputs) {
+    // fprintf(stderr, "TESTING:\n%s\n", S);
+    EXPECT_FALSE(M.Parse(S, false));
+  }
+}
+
+void EQ(const std::vector<uint32_t> &A, const std::vector<uint32_t> &B) {
+  EXPECT_EQ(A, B);
+}
+
+void EQ(const std::vector<std::string> &A, const std::vector<std::string> &B) {
+  std::set<std::string> a(A.begin(), A.end());
+  std::set<std::string> b(B.begin(), B.end());
+  EXPECT_EQ(a, b);
+}
+
+static void Merge(const std::string &Input,
+                  const std::vector<std::string> Result,
+                  size_t NumNewFeatures) {
+  Merger M;
+  std::vector<std::string> NewFiles;
+  EXPECT_TRUE(M.Parse(Input, true));
+  EXPECT_EQ(NumNewFeatures, M.Merge(&NewFiles));
+  EQ(NewFiles, Result);
+}
+
+TEST(Merge, Good) {
+  Merger M;
+
+  EXPECT_TRUE(M.Parse("1\n0\nAA\n", false));
+  EXPECT_EQ(M.Files.size(), 1U);
+  EXPECT_EQ(M.NumFilesInFirstCorpus, 0U);
+  EXPECT_EQ(M.Files[0].Name, "AA");
+  EXPECT_TRUE(M.LastFailure.empty());
+  EXPECT_EQ(M.FirstNotProcessedFile, 0U);
+
+  EXPECT_TRUE(M.Parse("2\n1\nAA\nBB\nSTARTED 0 42\n", false));
+  EXPECT_EQ(M.Files.size(), 2U);
+  EXPECT_EQ(M.NumFilesInFirstCorpus, 1U);
+  EXPECT_EQ(M.Files[0].Name, "AA");
+  EXPECT_EQ(M.Files[1].Name, "BB");
+  EXPECT_EQ(M.LastFailure, "AA");
+  EXPECT_EQ(M.FirstNotProcessedFile, 1U);
+
+  EXPECT_TRUE(M.Parse("3\n1\nAA\nBB\nC\n"
+                        "STARTED 0 1000\n"
+                        "DONE 0 1 2 3\n"
+                        "STARTED 1 1001\n"
+                        "DONE 1 4 5 6 \n"
+                        "STARTED 2 1002\n"
+                        "", true));
+  EXPECT_EQ(M.Files.size(), 3U);
+  EXPECT_EQ(M.NumFilesInFirstCorpus, 1U);
+  EXPECT_EQ(M.Files[0].Name, "AA");
+  EXPECT_EQ(M.Files[0].Size, 1000U);
+  EXPECT_EQ(M.Files[1].Name, "BB");
+  EXPECT_EQ(M.Files[1].Size, 1001U);
+  EXPECT_EQ(M.Files[2].Name, "C");
+  EXPECT_EQ(M.Files[2].Size, 1002U);
+  EXPECT_EQ(M.LastFailure, "C");
+  EXPECT_EQ(M.FirstNotProcessedFile, 3U);
+  EQ(M.Files[0].Features, {1, 2, 3});
+  EQ(M.Files[1].Features, {4, 5, 6});
+
+
+  std::vector<std::string> NewFiles;
+
+  EXPECT_TRUE(M.Parse("3\n2\nAA\nBB\nC\n"
+                        "STARTED 0 1000\nDONE 0 1 2 3\n"
+                        "STARTED 1 1001\nDONE 1 4 5 6 \n"
+                        "STARTED 2 1002\nDONE 2 6 1 3 \n"
+                        "", true));
+  EXPECT_EQ(M.Files.size(), 3U);
+  EXPECT_EQ(M.NumFilesInFirstCorpus, 2U);
+  EXPECT_TRUE(M.LastFailure.empty());
+  EXPECT_EQ(M.FirstNotProcessedFile, 3U);
+  EQ(M.Files[0].Features, {1, 2, 3});
+  EQ(M.Files[1].Features, {4, 5, 6});
+  EQ(M.Files[2].Features, {1, 3, 6});
+  EXPECT_EQ(0U, M.Merge(&NewFiles));
+  EQ(NewFiles, {});
+
+  EXPECT_TRUE(M.Parse("3\n1\nA\nB\nC\n"
+                        "STARTED 0 1000\nDONE 0 1 2 3\n"
+                        "STARTED 1 1001\nDONE 1 4 5 6 \n"
+                        "STARTED 2 1002\nDONE 2 6 1 3\n"
+                        "", true));
+  EQ(M.Files[0].Features, {1, 2, 3});
+  EQ(M.Files[1].Features, {4, 5, 6});
+  EQ(M.Files[2].Features, {1, 3, 6});
+  EXPECT_EQ(3U, M.Merge(&NewFiles));
+  EQ(NewFiles, {"B"});
+}
+
+TEST(Merge, Merge) {
+
+  Merge("3\n1\nA\nB\nC\n"
+        "STARTED 0 1000\nDONE 0 1 2 3\n"
+        "STARTED 1 1001\nDONE 1 4 5 6 \n"
+        "STARTED 2 1002\nDONE 2 6 1 3 \n",
+        {"B"}, 3);
+
+  Merge("3\n0\nA\nB\nC\n"
+        "STARTED 0 2000\nDONE 0 1 2 3\n"
+        "STARTED 1 1001\nDONE 1 4 5 6 \n"
+        "STARTED 2 1002\nDONE 2 6 1 3 \n",
+        {"A", "B", "C"}, 6);
+
+  Merge("4\n0\nA\nB\nC\nD\n"
+        "STARTED 0 2000\nDONE 0 1 2 3\n"
+        "STARTED 1 1101\nDONE 1 4 5 6 \n"
+        "STARTED 2 1102\nDONE 2 6 1 3 100 \n"
+        "STARTED 3 1000\nDONE 3 1  \n",
+        {"A", "B", "C", "D"}, 7);
+
+  Merge("4\n1\nA\nB\nC\nD\n"
+        "STARTED 0 2000\nDONE 0 4 5 6 7 8\n"
+        "STARTED 1 1100\nDONE 1 1 2 3 \n"
+        "STARTED 2 1100\nDONE 2 2 3 \n"
+        "STARTED 3 1000\nDONE 3 1  \n",
+        {"B", "D"}, 3);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/InitializeTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/InitializeTest.cpp
new file mode 100644
index 00000000..0d6a0fda
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/InitializeTest.cpp
@@ -0,0 +1,28 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Make sure LLVMFuzzerInitialize is called.
+#include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static char *argv0;
+
+extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) {
+  assert(*argc > 0);
+  argv0 = **argv;
+  fprintf(stderr, "LLVMFuzzerInitialize: %s\n", argv0);
+  return 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size == strlen(argv0) &&
+      !strncmp(reinterpret_cast<const char *>(Data), argv0, Size)) {
+    fprintf(stderr, "BINGO %s\n", argv0);
+    exit(1);
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LeakTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LeakTest.cpp
new file mode 100644
index 00000000..22e51640
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LeakTest.cpp
@@ -0,0 +1,17 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test with a leak.
+#include <cstdint>
+#include <cstddef>
+
+static volatile void *Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && *Data == 'H') {
+    Sink = new int;
+    Sink = nullptr;
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LeakTimeoutTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LeakTimeoutTest.cpp
new file mode 100644
index 00000000..4f31b3e5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LeakTimeoutTest.cpp
@@ -0,0 +1,17 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test with a leak.
+#include <cstdint>
+#include <cstddef>
+
+static volatile int *Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (!Size) return 0;
+  Sink = new int;
+  Sink = new int;
+  while (Sink) *Sink = 0;  // Infinite loop.
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LoadTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LoadTest.cpp
new file mode 100644
index 00000000..c1780d5c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/LoadTest.cpp
@@ -0,0 +1,22 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer: find interesting value of array index.
+#include <assert.h>
+#include <cstdint>
+#include <cstring>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+const int kArraySize = 1234567;
+int array[kArraySize];
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 8) return 0;
+  size_t a = 0;
+  memcpy(&a, Data, 8);
+  Sink = array[a % (kArraySize + 1)];
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/MemcmpTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/MemcmpTest.cpp
new file mode 100644
index 00000000..fdbf9468
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/MemcmpTest.cpp
@@ -0,0 +1,31 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find a particular string.
+#include <cstring>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  // TODO: check other sizes.
+  if (Size >= 8 && memcmp(Data, "01234567", 8) == 0) {
+    if (Size >= 12 && memcmp(Data + 8, "ABCD", 4) == 0) {
+      if (Size >= 14 && memcmp(Data + 12, "XY", 2) == 0) {
+        if (Size >= 17 && memcmp(Data + 14, "KLM", 3) == 0) {
+          if (Size >= 27 && memcmp(Data + 17, "ABCDE-GHIJ", 10) == 0){
+            fprintf(stderr, "BINGO %zd\n", Size);
+            for (size_t i = 0; i < Size; i++) {
+              uint8_t C = Data[i];
+              if (C >= 32 && C < 127)
+                fprintf(stderr, "%c", C);
+            }
+            fprintf(stderr, "\n");
+            exit(1);
+          }
+        }
+      }
+    }
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NthRunCrashTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NthRunCrashTest.cpp
new file mode 100644
index 00000000..b43e69e5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NthRunCrashTest.cpp
@@ -0,0 +1,18 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Crash on the N-th execution.
+#include <cstdint>
+#include <cstddef>
+#include <iostream>
+
+static int Counter;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Counter++ == 1000) {
+    std::cout << "BINGO; Found the target, exiting\n";
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NullDerefOnEmptyTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NullDerefOnEmptyTest.cpp
new file mode 100644
index 00000000..15371092
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NullDerefOnEmptyTest.cpp
@@ -0,0 +1,19 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the empty string.
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int *Null = 0;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size == 0) {
+    std::cout << "Found the target, dereferencing NULL\n";
+    *Null = 1;
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NullDerefTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NullDerefTest.cpp
new file mode 100644
index 00000000..3f03d249
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/NullDerefTest.cpp
@@ -0,0 +1,26 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+static volatile int *Null = 0;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        std::cout << "Found the target, dereferencing NULL\n";
+        *Null = 1;
+      }
+    }
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OneHugeAllocTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OneHugeAllocTest.cpp
new file mode 100644
index 00000000..8d3d1d6d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OneHugeAllocTest.cpp
@@ -0,0 +1,28 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Tests OOM handling when there is a single large allocation.
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstring>
+#include <iostream>
+
+static volatile char *SinkPtr;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    if (Size > 1 && Data[1] == 'i') {
+      if (Size > 2 && Data[2] == '!') {
+        size_t kSize = (size_t)1 << 31;
+        char *p = new char[kSize];
+        memset(p, 0, kSize);
+        SinkPtr = p;
+        delete [] p;
+      }
+    }
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OutOfMemorySingleLargeMallocTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OutOfMemorySingleLargeMallocTest.cpp
new file mode 100644
index 00000000..ea23a601
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OutOfMemorySingleLargeMallocTest.cpp
@@ -0,0 +1,27 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Tests OOM handling.
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstring>
+#include <iostream>
+
+static volatile char *SinkPtr;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    if (Size > 1 && Data[1] == 'i') {
+      if (Size > 2 && Data[2] == '!') {
+          size_t kSize = 0xff000000U;
+          char *p = new char[kSize];
+          SinkPtr = p;
+          delete [] p;
+      }
+    }
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OutOfMemoryTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OutOfMemoryTest.cpp
new file mode 100644
index 00000000..078a39ee
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/OutOfMemoryTest.cpp
@@ -0,0 +1,31 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Tests OOM handling.
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstring>
+#include <iostream>
+#include <thread>
+
+static volatile char *SinkPtr;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    if (Size > 1 && Data[1] == 'i') {
+      if (Size > 2 && Data[2] == '!') {
+        while (true) {
+          size_t kSize = 1 << 28;
+          char *p = new char[kSize];
+          memset(p, 0, kSize);
+          SinkPtr = p;
+          std::this_thread::sleep_for(std::chrono::seconds(1));
+        }
+      }
+    }
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/RepeatedBytesTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/RepeatedBytesTest.cpp
new file mode 100644
index 00000000..2fa6c78c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/RepeatedBytesTest.cpp
@@ -0,0 +1,29 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find repeated bytes.
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  // Looking for AAAAAAAAAAAAAAAAAAAAAA or some such.
+  size_t CurA = 0, MaxA = 0;
+  for (size_t i = 0; i < Size; i++) {
+    // Make sure there are no conditionals in the loop so that
+    // coverage can't help the fuzzer.
+    int EQ = Data[i] == 'A';
+    CurA = EQ * (CurA + 1);
+    int GT = CurA > MaxA;
+    MaxA = GT * CurA + (!GT) * MaxA;
+  }
+  if (MaxA >= 20) {
+    std::cout << "BINGO; Found the target (Max: " << MaxA << "), exiting\n";
+    exit(0);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/RepeatedMemcmp.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/RepeatedMemcmp.cpp
new file mode 100644
index 00000000..a327bbee
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/RepeatedMemcmp.cpp
@@ -0,0 +1,22 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+
+#include <cstring>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  int Matches = 0;
+  for (size_t i = 0; i + 2 < Size; i += 3) {
+    const char *Pat = i % 2 ? "foo" : "bar";
+    if (!memcmp(Data + i, Pat, 3))
+      Matches++;
+  }
+  if (Matches > 20) {
+    fprintf(stderr, "BINGO!\n");
+    exit(1);
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ShrinkControlFlowTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ShrinkControlFlowTest.cpp
new file mode 100644
index 00000000..0fd7c5e9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ShrinkControlFlowTest.cpp
@@ -0,0 +1,28 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test that we can find the minimal item in the corpus (3 bytes: "FUZ").
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstring>
+#include <cstdio>
+
+static volatile int Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  int8_t Ids[256];
+  memset(Ids, -1, sizeof(Ids));
+  for (size_t i = 0; i < Size; i++)
+    if (Ids[Data[i]] == -1)
+      Ids[Data[i]] = i;
+  int F = Ids[(unsigned char)'F'];
+  int U = Ids[(unsigned char)'U'];
+  int Z = Ids[(unsigned char)'Z'];
+  if (F >= 0 && U > F && Z > U) {
+    Sink++;
+    //fprintf(stderr, "IDS: %d %d %d\n", F, U, Z);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ShrinkValueProfileTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ShrinkValueProfileTest.cpp
new file mode 100644
index 00000000..026b8ce2
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ShrinkValueProfileTest.cpp
@@ -0,0 +1,22 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test that we can find the minimal item in the corpus (3 bytes: "FUZ").
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstring>
+#include <cstdio>
+
+static volatile uint32_t Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < sizeof(uint32_t)) return 0;
+  uint32_t X, Y;
+  size_t Offset = Size < 8 ? 0 : Size / 2;
+  memcpy(&X, Data + Offset, sizeof(uint32_t));
+  memcpy(&Y, "FUZZ", sizeof(uint32_t));
+  Sink = X == Y;
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SignedIntOverflowTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SignedIntOverflowTest.cpp
new file mode 100644
index 00000000..7df32ad5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SignedIntOverflowTest.cpp
@@ -0,0 +1,28 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test for signed-integer-overflow.
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+#include <climits>
+
+static volatile int Sink;
+static int Large = INT_MAX;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        Large++;  // int overflow.
+      }
+    }
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleCmpTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleCmpTest.cpp
new file mode 100644
index 00000000..0220c30f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleCmpTest.cpp
@@ -0,0 +1,46 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find several narrow ranges.
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <cstdio>
+
+extern int AllLines[];
+
+bool PrintOnce(int Line) {
+  if (!AllLines[Line])
+    fprintf(stderr, "Seen line %d\n", Line);
+  AllLines[Line] = 1;
+  return true;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size != 22) return 0;
+  uint64_t x = 0;
+  int64_t  y = 0;
+  int32_t z = 0;
+  uint16_t a = 0;
+  memcpy(&x, Data, 8);  // 8
+  memcpy(&y, Data + 8, 8);  // 16
+  memcpy(&z, Data + 16, sizeof(z));  // 20
+  memcpy(&a, Data + 20, sizeof(a));  // 22
+
+  if (x > 1234567890 && PrintOnce(__LINE__) &&
+      x < 1234567895 && PrintOnce(__LINE__) &&
+      a == 0x4242 && PrintOnce(__LINE__) &&
+      y >= 987654321 && PrintOnce(__LINE__) &&
+      y <= 987654325 && PrintOnce(__LINE__) &&
+      z < -10000 && PrintOnce(__LINE__) &&
+      z >= -10005 && PrintOnce(__LINE__) &&
+      z != -10003 && PrintOnce(__LINE__) &&
+      true) {
+    fprintf(stderr, "BINGO; Found the target: size %zd (%zd, %zd, %d, %d), exiting.\n",
+            Size, x, y, z, a);
+    exit(1);
+  }
+  return 0;
+}
+
+int AllLines[__LINE__ + 1];  // Must be the last line.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleDictionaryTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleDictionaryTest.cpp
new file mode 100644
index 00000000..cd7292bd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleDictionaryTest.cpp
@@ -0,0 +1,29 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer.
+// The fuzzer must find a string based on dictionary words:
+//   "Elvis"
+//   "Presley"
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstring>
+#include <iostream>
+
+static volatile int Zero = 0;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  const char *Expected = "ElvisPresley";
+  if (Size < strlen(Expected)) return 0;
+  size_t Match = 0;
+  for (size_t i = 0; Expected[i]; i++)
+    if (Expected[i] + Zero == Data[i])
+      Match++;
+  if (Match == strlen(Expected)) {
+    std::cout << "BINGO; Found the target, exiting\n";
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleHashTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleHashTest.cpp
new file mode 100644
index 00000000..00599de7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleHashTest.cpp
@@ -0,0 +1,40 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// This test computes a checksum of the data (all but the last 4 bytes),
+// and then compares the last 4 bytes with the computed value.
+// A fuzzer with cmp traces is expected to defeat this check.
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <cstdio>
+
+// A modified jenkins_one_at_a_time_hash initialized by non-zero,
+// so that simple_hash(0) != 0. See also
+// https://en.wikipedia.org/wiki/Jenkins_hash_function
+static uint32_t simple_hash(const uint8_t *Data, size_t Size) {
+  uint32_t Hash = 0x12039854;
+  for (uint32_t i = 0; i < Size; i++) {
+    Hash += Data[i];
+    Hash += (Hash << 10);
+    Hash ^= (Hash >> 6);
+  }
+  Hash += (Hash << 3);
+  Hash ^= (Hash >> 11);
+  Hash += (Hash << 15);
+  return Hash;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 14)
+    return 0;
+
+  uint32_t Hash = simple_hash(&Data[0], Size - 4);
+  uint32_t Want = reinterpret_cast<const uint32_t *>(&Data[Size - 4])[0];
+  if (Hash != Want)
+    return 0;
+  fprintf(stderr, "BINGO; simple_hash defeated: %x == %x\n", (unsigned int)Hash,
+          (unsigned int)Want);
+  exit(1);
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleTest.cpp
new file mode 100644
index 00000000..e53ea160
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleTest.cpp
@@ -0,0 +1,27 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        std::cout << "BINGO; Found the target, exiting\n";
+        exit(0);
+      }
+    }
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleThreadedTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleThreadedTest.cpp
new file mode 100644
index 00000000..5f02d3f8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SimpleThreadedTest.cpp
@@ -0,0 +1,25 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Threaded test for a fuzzer. The fuzzer should find "H"
+#include <assert.h>
+#include <cstdint>
+#include <cstddef>
+#include <cstring>
+#include <iostream>
+#include <thread>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  auto C = [&] {
+    if (Size >= 2 && Data[0] == 'H') {
+        std::cout << "BINGO; Found the target, exiting\n";
+        abort();
+    }
+  };
+  std::thread T[] = {std::thread(C), std::thread(C), std::thread(C),
+                     std::thread(C), std::thread(C), std::thread(C)};
+  for (auto &X : T)
+    X.join();
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleMemcmpTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleMemcmpTest.cpp
new file mode 100644
index 00000000..c73f68a7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleMemcmpTest.cpp
@@ -0,0 +1,17 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find a particular string.
+#include <cstring>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  char *S = (char*)Data;
+  if (Size >= 6 && !memcmp(S, "qwerty", 6)) {
+    fprintf(stderr, "BINGO\n");
+    exit(1);
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleStrcmpTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleStrcmpTest.cpp
new file mode 100644
index 00000000..73470b52
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleStrcmpTest.cpp
@@ -0,0 +1,17 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find a particular string.
+#include <cstring>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  char *S = (char*)Data;
+  if (Size >= 7 && !strcmp(S, "qwerty")) {
+    fprintf(stderr, "BINGO\n");
+    exit(1);
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleStrncmpTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleStrncmpTest.cpp
new file mode 100644
index 00000000..dbcc464b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SingleStrncmpTest.cpp
@@ -0,0 +1,17 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find a particular string.
+#include <cstring>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  char *S = (char*)Data;
+  if (Size >= 6 && !strncmp(S, "qwerty", 6)) {
+    fprintf(stderr, "BINGO\n");
+    exit(1);
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SpamyTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SpamyTest.cpp
new file mode 100644
index 00000000..d294d4dc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SpamyTest.cpp
@@ -0,0 +1,21 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// The test spams to stderr and stdout.
+#include <assert.h>
+#include <cstdint>
+#include <cstdio>
+#include <cstddef>
+#include <iostream>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  printf("PRINTF_STDOUT\n");
+  fflush(stdout);
+  fprintf(stderr, "PRINTF_STDERR\n");
+  std::cout << "STREAM_COUT\n";
+  std::cout.flush();
+  std::cerr << "STREAM_CERR\n";
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrcmpTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrcmpTest.cpp
new file mode 100644
index 00000000..cd91dda7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrcmpTest.cpp
@@ -0,0 +1,32 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Break through a series of strcmp.
+#include <cstring>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cassert>
+
+bool Eq(const uint8_t *Data, size_t Size, const char *Str) {
+  char Buff[1024];
+  size_t Len = strlen(Str);
+  if (Size < Len) return false;
+  if (Len >= sizeof(Buff)) return false;
+  memcpy(Buff, (char*)Data, Len);
+  Buff[Len] = 0;
+  int res = strcmp(Buff, Str);
+  return res == 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Eq(Data, Size, "ABC") &&
+      Size >= 3 && Eq(Data + 3, Size - 3, "QWER") &&
+      Size >= 7 && Eq(Data + 7, Size - 7, "ZXCVN") &&
+      Size >= 14 && Data[13] == 42
+    ) {
+    fprintf(stderr, "BINGO\n");
+    exit(1);
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrncmpOOBTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrncmpOOBTest.cpp
new file mode 100644
index 00000000..f70b003a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrncmpOOBTest.cpp
@@ -0,0 +1,21 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test that libFuzzer itself does not read out of bounds.
+#include <assert.h>
+#include <cstdint>
+#include <cstring>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 5) return 0;
+  const char *Ch = reinterpret_cast<const char *>(Data);
+  if (Ch[Size - 3] == 'a')
+    Sink = strncmp(Ch + Size - 3, "abcdefg", 6);
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrncmpTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrncmpTest.cpp
new file mode 100644
index 00000000..5ffd011d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrncmpTest.cpp
@@ -0,0 +1,28 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find a particular string.
+#include <cstring>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+static volatile int sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  // TODO: check other sizes.
+  char *S = (char*)Data;
+  if (Size >= 8 && strncmp(S, "123", 8))
+    sink = 1;
+  if (Size >= 8 && strncmp(S, "01234567", 8) == 0) {
+    if (Size >= 12 && strncmp(S + 8, "ABCD", 4) == 0) {
+      if (Size >= 14 && strncmp(S + 12, "XY", 2) == 0) {
+        if (Size >= 17 && strncmp(S + 14, "KLM", 3) == 0) {
+          fprintf(stderr, "BINGO\n");
+          exit(1);
+        }
+      }
+    }
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrstrTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrstrTest.cpp
new file mode 100644
index 00000000..f021e75e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/StrstrTest.cpp
@@ -0,0 +1,28 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test strstr and strcasestr hooks.
+#include <string>
+#include <string.h>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+// Windows does not have strcasestr and memmem, so we are not testing them.
+#ifdef _WIN32
+#define strcasestr strstr
+#define memmem(a, b, c, d) true
+#endif
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 4) return 0;
+  std::string s(reinterpret_cast<const char*>(Data), Size);
+  if (strstr(s.c_str(), "FUZZ") &&
+      strcasestr(s.c_str(), "aBcD") &&
+      memmem(s.data(), s.size(), "kuku", 4)
+      ) {
+    fprintf(stderr, "BINGO\n");
+    exit(1);
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SwapCmpTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SwapCmpTest.cpp
new file mode 100644
index 00000000..f79db4cc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SwapCmpTest.cpp
@@ -0,0 +1,34 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// The fuzzer must find several constants with swapped bytes.
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <cstdio>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 14) return 0;
+  uint64_t x = 0;
+  uint32_t y = 0;
+  uint16_t z = 0;
+  memcpy(&x, Data, sizeof(x));
+  memcpy(&y, Data + Size / 2, sizeof(y));
+  memcpy(&z, Data + Size - sizeof(z), sizeof(z));
+
+  x = __builtin_bswap64(x);
+  y = __builtin_bswap32(y);
+  z = __builtin_bswap16(z);
+
+  if (x == 0x46555A5A5A5A5546ULL &&
+      z == 0x4F4B &&
+      y == 0x66757A7A &&
+      true
+      ) {
+    if (Data[Size - 3] == 'z') {
+      fprintf(stderr, "BINGO; Found the target\n");
+      exit(1);
+    }
+  }
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/Switch2Test.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/Switch2Test.cpp
new file mode 100644
index 00000000..3c6a3004
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/Switch2Test.cpp
@@ -0,0 +1,35 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the interesting switch value.
+#include <cstdint>
+#include <cstdlib>
+#include <cstdio>
+#include <cstring>
+#include <cstddef>
+
+int Switch(int a) {
+  switch(a) {
+    case 100001: return 1;
+    case 100002: return 2;
+    case 100003: return 4;
+  }
+  return 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  const int N = 3;
+  if (Size < N * sizeof(int)) return 0;
+  int Res = 0;
+  for (int i = 0; i < N; i++) {
+    int X;
+    memcpy(&X, Data + i * sizeof(int), sizeof(int));
+    Res += Switch(X);
+  }
+  if (Res == 5 || Res == 3 || Res == 6 || Res == 7) {
+    fprintf(stderr, "BINGO; Found the target, exiting; Res=%d\n", Res);
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SwitchTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SwitchTest.cpp
new file mode 100644
index 00000000..74e86c06
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/SwitchTest.cpp
@@ -0,0 +1,58 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the interesting switch value.
+#include <cstdint>
+#include <cstdlib>
+#include <cstdio>
+#include <cstring>
+#include <cstddef>
+
+static volatile int Sink;
+
+template<class T>
+bool Switch(const uint8_t *Data, size_t Size) {
+  T X;
+  if (Size < sizeof(X)) return false;
+  memcpy(&X, Data, sizeof(X));
+  switch (X) {
+    case 1: Sink = __LINE__; break;
+    case 101: Sink = __LINE__; break;
+    case 1001: Sink = __LINE__; break;
+    case 10001: Sink = __LINE__; break;
+//    case 100001: Sink = __LINE__; break;
+//    case 1000001: Sink = __LINE__; break;
+    case 10000001: Sink = __LINE__; break;
+    case 100000001: return true;
+  }
+  return false;
+}
+
+bool ShortSwitch(const uint8_t *Data, size_t Size) {
+  short X;
+  if (Size < sizeof(short)) return false;
+  memcpy(&X, Data, sizeof(short));
+  switch(X) {
+    case 42: Sink = __LINE__; break;
+    case 402: Sink = __LINE__; break;
+    case 4002: Sink = __LINE__; break;
+    case 5002: Sink = __LINE__; break;
+    case 7002: Sink = __LINE__; break;
+    case 9002: Sink = __LINE__; break;
+    case 14002: Sink = __LINE__; break;
+    case 21402: return true;
+  }
+  return false;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size >= 4  && Switch<int>(Data, Size) &&
+      Size >= 12 && Switch<uint64_t>(Data + 4, Size - 4) &&
+      Size >= 14 && ShortSwitch(Data + 12, 2)
+    ) {
+    fprintf(stderr, "BINGO; Found the target, exiting\n");
+    exit(1);
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ThreadedLeakTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ThreadedLeakTest.cpp
new file mode 100644
index 00000000..75110711
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ThreadedLeakTest.cpp
@@ -0,0 +1,18 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// The fuzzer should find a leak in a non-main thread.
+#include <cstdint>
+#include <cstddef>
+#include <thread>
+
+static volatile int *Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size == 0) return 0;
+  if (Data[0] != 'F') return 0;
+  std::thread T([&] { Sink = new int; });
+  T.join();
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ThreadedTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ThreadedTest.cpp
new file mode 100644
index 00000000..09137a9a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ThreadedTest.cpp
@@ -0,0 +1,26 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Threaded test for a fuzzer. The fuzzer should not crash.
+#include <assert.h>
+#include <cstdint>
+#include <cstddef>
+#include <cstring>
+#include <thread>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 8) return 0;
+  assert(Data);
+  auto C = [&] {
+    size_t Res = 0;
+    for (size_t i = 0; i < Size / 2; i++)
+      Res += memcmp(Data, Data + Size / 2, 4);
+    return Res;
+  };
+  std::thread T[] = {std::thread(C), std::thread(C), std::thread(C),
+                     std::thread(C), std::thread(C), std::thread(C)};
+  for (auto &X : T)
+    X.join();
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TimeoutEmptyTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TimeoutEmptyTest.cpp
new file mode 100644
index 00000000..8066f480
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TimeoutEmptyTest.cpp
@@ -0,0 +1,14 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the empty string.
+#include <cstdint>
+#include <cstddef>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  static volatile int Zero = 0;
+  if (!Size)
+    while(!Zero)
+      ;
+  return 0;
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TimeoutTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TimeoutTest.cpp
new file mode 100644
index 00000000..f8107012
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TimeoutTest.cpp
@@ -0,0 +1,26 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        Sink = 2;
+        while (Sink)
+          ;
+      }
+    }
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TraceMallocTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TraceMallocTest.cpp
new file mode 100644
index 00000000..43e6950e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/TraceMallocTest.cpp
@@ -0,0 +1,27 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Tests -trace_malloc
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+int *Ptr;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (!Size) return 0;
+  if (*Data == 1) {
+    delete Ptr;
+    Ptr = nullptr;
+  } else if (*Data == 2) {
+    delete Ptr;
+    Ptr = new int;
+  } else if (*Data == 3) {
+    if (!Ptr)
+      Ptr = new int;
+  }
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/UninstrumentedTest.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/UninstrumentedTest.cpp
new file mode 100644
index 00000000..ffe952c7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/UninstrumentedTest.cpp
@@ -0,0 +1,11 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// This test should not be instrumented.
+#include <cstdint>
+#include <cstddef>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/afl-driver-extra-stats.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/afl-driver-extra-stats.test
new file mode 100644
index 00000000..81e384e7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/afl-driver-extra-stats.test
@@ -0,0 +1,28 @@
+; Test that not specifying an extra stats file isn't broken.
+RUN: unset AFL_DRIVER_EXTRA_STATS_FILENAME
+RUN: AFLDriverTest
+
+; Test that specifying an invalid extra stats file causes a crash.
+RUN: ASAN_OPTIONS= AFL_DRIVER_EXTRA_STATS_FILENAME=%T not --crash AFLDriverTest
+
+; Test that specifying a corrupted stats file causes a crash.
+echo "peak_rss_mb :0" > %t
+ASAN_OPTIONS= AFL_DRIVER_EXTRA_STATS_FILENAME=%t not --crash AFLDriverTest
+
+; Test that specifying a valid nonexistent stats file works.
+RUN: rm -f %t
+RUN: AFL_DRIVER_EXTRA_STATS_FILENAME=%t AFLDriverTest
+RUN: [[ $(grep "peak_rss_mb\|slowest_unit_time_sec" %t | wc -l) -eq 2 ]]
+
+; Test that specifying a valid preexisting stats file works.
+RUN: printf "peak_rss_mb : 0\nslowest_unit_time_sec: 0\n" > %t
+RUN: AFL_DRIVER_EXTRA_STATS_FILENAME=%t AFLDriverTest
+; Check that both lines were printed.
+RUN: [[ $(grep "peak_rss_mb\|slowest_unit_time_sec" %t | wc -l) -eq 2 ]]
+
+; Test that peak_rss_mb and slowest_unit_time_in_secs are only updated when necessary.
+; Check that both lines have 9999 since there's no way we have exceeded that
+; amount of time or virtual memory.
+RUN: printf "peak_rss_mb : 9999\nslowest_unit_time_sec: 9999\n" > %t
+RUN: AFL_DRIVER_EXTRA_STATS_FILENAME=%t AFLDriverTest
+RUN: [[ $(grep "9999" %t | wc -l) -eq 2 ]]
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/afl-driver-stderr.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/afl-driver-stderr.test
new file mode 100644
index 00000000..c0f9c839
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/afl-driver-stderr.test
@@ -0,0 +1,10 @@
+; Test that not specifying a stderr file isn't broken.
+RUN: unset AFL_DRIVER_STDERR_DUPLICATE_FILENAME
+RUN: AFLDriverTest
+
+; Test that specifying an invalid file causes a crash.
+RUN: ASAN_OPTIONS= AFL_DRIVER_STDERR_DUPLICATE_FILENAME="%T" not --crash AFLDriverTest
+
+; Test that a file is created when specified as the duplicate stderr.
+RUN: AFL_DRIVER_STDERR_DUPLICATE_FILENAME=%t AFLDriverTest
+RUN: stat %t
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/caller-callee.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/caller-callee.test
new file mode 100644
index 00000000..76a951c5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/caller-callee.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-CallerCalleeTest          -use_value_profile=1 -cross_over=0 -max_len=6 -seed=1 -runs=10000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/coverage.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/coverage.test
new file mode 100644
index 00000000..fa11be50
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/coverage.test
@@ -0,0 +1,19 @@
+CHECK: COVERAGE:
+CHECK-DAG: COVERED: {{.*}}in LLVMFuzzerTestOneInput {{.*}}NullDerefTest.cpp:13
+CHECK-DAG: COVERED: {{.*}}in LLVMFuzzerTestOneInput {{.*}}NullDerefTest.cpp:14
+CHECK-DAG: COVERED: {{.*}}in LLVMFuzzerTestOneInput {{.*}}NullDerefTest.cpp:16
+CHECK-DAG: COVERED: {{.*}}in LLVMFuzzerTestOneInput {{.*}}NullDerefTest.cpp:19
+CHECK: COVERED_DIRS: {{.*}}lib/Fuzzer/test
+RUN: not LLVMFuzzer-NullDerefTest -print_coverage=1 2>&1 | FileCheck %s
+
+RUN: LLVMFuzzer-DSOTest -print_coverage=1 -runs=0 2>&1 | FileCheck %s --check-prefix=DSO
+DSO: COVERAGE:
+DSO-DAG: COVERED:{{.*}}DSO1{{.*}}DSO1.cpp
+DSO-DAG: COVERED:{{.*}}DSO2{{.*}}DSO2.cpp
+DSO-DAG: COVERED:{{.*}}LLVMFuzzerTestOneInput{{.*}}DSOTestMain
+DSO-DAG: UNCOVERED_LINE:{{.*}}DSO1{{.*}}DSO1.cpp
+DSO-DAG: UNCOVERED_LINE:{{.*}}DSO2{{.*}}DSO2.cpp
+DSO-DAG: UNCOVERED_FUNC: in Uncovered1
+DSO-DAG: UNCOVERED_FUNC: in Uncovered2
+DSO-DAG: UNCOVERED_LINE: in LLVMFuzzerTestOneInput
+DSO-DAG: UNCOVERED_FILE:{{.*}}DSOTestExtra.cpp
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/dict1.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/dict1.txt
new file mode 100644
index 00000000..520d0cc7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/dict1.txt
@@ -0,0 +1,4 @@
+# Dictionary for SimpleDictionaryTest
+
+a="Elvis"
+b="Presley"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/dump_coverage.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/dump_coverage.test
new file mode 100644
index 00000000..9bd98daa
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/dump_coverage.test
@@ -0,0 +1,16 @@
+RUN: DIR=%t_workdir
+RUN: BUILD_DIR=$(pwd)
+RUN: rm -rf $DIR && mkdir -p $DIR && cd $DIR
+RUN: not $BUILD_DIR/LLVMFuzzer-NullDerefTest -dump_coverage=1 2>&1 | FileCheck %s
+RUN: $BUILD_DIR/LLVMFuzzer-DSOTest -dump_coverage=1 -runs=0 2>&1 | FileCheck %s --check-prefix=DSO
+RUN: not $BUILD_DIR/LLVMFuzzer-NullDerefTest -dump_coverage=0 2>&1 | FileCheck %s --check-prefix=NOCOV
+RUN: rm -rf $DIR
+
+
+CHECK: SanitizerCoverage: ./LLVMFuzzer-NullDerefTest.{{.*}}.sancov {{.*}} PCs written
+
+DSO: SanitizerCoverage: ./LLVMFuzzer-DSOTest.{{.*}}.sancov {{.*}} PCs written
+DSO-DAG: SanitizerCoverage: ./libLLVMFuzzer-DSO1.{{.*}}.sancov {{.*}} PCs written
+DSO-DAG: SanitizerCoverage: ./libLLVMFuzzer-DSO2.{{.*}}.sancov {{.*}} PCs written
+
+NOCOV-NOT: SanitizerCoverage: {{.*}} PCs written
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-customcrossover.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-customcrossover.test
new file mode 100644
index 00000000..28d39ce3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-customcrossover.test
@@ -0,0 +1,10 @@
+RUN: rm -rf %t/CustomCrossover
+RUN: mkdir -p %t/CustomCrossover
+RUN: echo "0123456789" > %t/CustomCrossover/digits
+RUN: echo "abcdefghij" > %t/CustomCrossover/chars
+RUN: not LLVMFuzzer-CustomCrossOverTest -seed=1 -use_memcmp=0 -runs=100000 %t/CustomCrossover 2>&1 | FileCheck %s --check-prefix=LLVMFuzzerCustomCrossover
+RUN: rm -rf %t/CustomCrossover
+
+LLVMFuzzerCustomCrossover: In LLVMFuzzerCustomCrossover
+LLVMFuzzerCustomCrossover: BINGO
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-custommutator.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-custommutator.test
new file mode 100644
index 00000000..fcd740bf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-custommutator.test
@@ -0,0 +1,4 @@
+RUN: not LLVMFuzzer-CustomMutatorTest 2>&1 | FileCheck %s --check-prefix=LLVMFuzzerCustomMutator
+LLVMFuzzerCustomMutator: In LLVMFuzzerCustomMutator
+LLVMFuzzerCustomMutator: BINGO
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-dict.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-dict.test
new file mode 100644
index 00000000..dec002f6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-dict.test
@@ -0,0 +1,6 @@
+CHECK: BINGO
+Done1000000: Done 1000000 runs in
+
+RUN: not LLVMFuzzer-SimpleDictionaryTest -dict=%S/dict1.txt -seed=1 -runs=1000003  2>&1 | FileCheck %s
+RUN:     LLVMFuzzer-SimpleDictionaryTest                    -seed=1 -runs=1000000  2>&1 | FileCheck %s --check-prefix=Done1000000
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-dirs.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-dirs.test
new file mode 100644
index 00000000..63afe8df
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-dirs.test
@@ -0,0 +1,15 @@
+RUN: rm -rf %t/SUB1
+RUN: mkdir -p %t/SUB1/SUB2/SUB3
+RUN: echo a > %t/SUB1/a
+RUN: echo b > %t/SUB1/SUB2/b
+RUN: echo c > %t/SUB1/SUB2/SUB3/c
+RUN: LLVMFuzzer-SimpleTest %t/SUB1 -runs=0 2>&1 | FileCheck %s --check-prefix=SUBDIRS
+SUBDIRS: READ   units: 3
+RUN: echo zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz > %t/SUB1/long
+RUN: LLVMFuzzer-SimpleTest %t/SUB1 -runs=0 2>&1 | FileCheck %s --check-prefix=LONG
+LONG: INFO: -max_len is not provided, using 94
+RUN: rm -rf %t/SUB1
+
+RUN: not LLVMFuzzer-SimpleTest NONEXISTENT_DIR 2>&1 | FileCheck %s --check-prefix=NONEXISTENT_DIR
+NONEXISTENT_DIR: No such directory: NONEXISTENT_DIR; exiting
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-fdmask.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-fdmask.test
new file mode 100644
index 00000000..abbc4bd6
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-fdmask.test
@@ -0,0 +1,30 @@
+RUN: LLVMFuzzer-SpamyTest -runs=1                  2>&1 | FileCheck %s --check-prefix=FD_MASK_0
+RUN: LLVMFuzzer-SpamyTest -runs=1 -close_fd_mask=0 2>&1 | FileCheck %s --check-prefix=FD_MASK_0
+RUN: LLVMFuzzer-SpamyTest -runs=1 -close_fd_mask=1 2>&1 | FileCheck %s --check-prefix=FD_MASK_1
+RUN: LLVMFuzzer-SpamyTest -runs=1 -close_fd_mask=2 2>&1 | FileCheck %s --check-prefix=FD_MASK_2
+RUN: LLVMFuzzer-SpamyTest -runs=1 -close_fd_mask=3 2>&1 | FileCheck %s --check-prefix=FD_MASK_3
+
+FD_MASK_0: PRINTF_STDOUT
+FD_MASK_0: PRINTF_STDERR
+FD_MASK_0: STREAM_COUT
+FD_MASK_0: STREAM_CERR
+FD_MASK_0: INITED
+
+FD_MASK_1-NOT: PRINTF_STDOUT
+FD_MASK_1: PRINTF_STDERR
+FD_MASK_1-NOT: STREAM_COUT
+FD_MASK_1: STREAM_CERR
+FD_MASK_1: INITED
+
+FD_MASK_2: PRINTF_STDOUT
+FD_MASK_2-NOT: PRINTF_STDERR
+FD_MASK_2: STREAM_COUT
+FD_MASK_2-NOTE: STREAM_CERR
+FD_MASK_2: INITED
+
+FD_MASK_3-NOT: PRINTF_STDOUT
+FD_MASK_3-NOT: PRINTF_STDERR
+FD_MASK_3-NOT: STREAM_COUT
+FD_MASK_3-NOT: STREAM_CERR
+FD_MASK_3: INITED
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-finalstats.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-finalstats.test
new file mode 100644
index 00000000..1cbcd10f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-finalstats.test
@@ -0,0 +1,11 @@
+RUN: LLVMFuzzer-SimpleTest -seed=1 -runs=77 -print_final_stats=1 2>&1 | FileCheck %s --check-prefix=FINAL_STATS
+FINAL_STATS: stat::number_of_executed_units: 77
+FINAL_STATS: stat::average_exec_per_sec:     0
+FINAL_STATS: stat::new_units_added:
+FINAL_STATS: stat::slowest_unit_time_sec:    0
+FINAL_STATS: stat::peak_rss_mb:
+
+RUN: LLVMFuzzer-SimpleTest %S/dict1.txt -runs=33 -print_final_stats=1 2>&1 | FileCheck %s --check-prefix=FINAL_STATS1
+FINAL_STATS1: stat::number_of_executed_units: 33
+FINAL_STATS1: stat::peak_rss_mb:
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-flags.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-flags.test
new file mode 100644
index 00000000..76ea2770
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-flags.test
@@ -0,0 +1,10 @@
+RUN: LLVMFuzzer-SimpleTest -foo_bar=1 2>&1 | FileCheck %s --check-prefix=FOO_BAR
+FOO_BAR: WARNING: unrecognized flag '-foo_bar=1'; use -help=1 to list all flags
+FOO_BAR: BINGO
+
+RUN: LLVMFuzzer-SimpleTest -runs=10 --max_len=100 2>&1 | FileCheck %s --check-prefix=DASH_DASH
+DASH_DASH: WARNING: did you mean '-max_len=100' (single dash)?
+DASH_DASH: INFO: A corpus is not provided, starting from an empty corpus
+
+RUN: LLVMFuzzer-SimpleTest -help=1 2>&1 | FileCheck %s --check-prefix=NO_INTERNAL
+NO_INTERNAL-NOT: internal flag
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-jobs.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-jobs.test
new file mode 100644
index 00000000..5bf8cfad
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-jobs.test
@@ -0,0 +1,29 @@
+RUN: rm -rf %tmp
+RUN: mkdir %tmp && cd %tmp
+# Create a shared corpus directory
+RUN: rm -rf FuzzerJobsTestCORPUS
+RUN: mkdir FuzzerJobsTestCORPUS
+RUN: rm -f fuzz-{0,1}.log
+# Start fuzzer and in parallel check that the output files
+# that should be created exist.
+RUN: LLVMFuzzer-EmptyTest -max_total_time=4 -jobs=2 -workers=2 FuzzerJobsTestCORPUS > %t-fuzzer-jobs-test.log 2>&1 & export FUZZER_PID=$!
+# Wait a short while to give time for the child processes
+# to start fuzzing
+RUN: sleep 2
+# If the instances are running in parallel they should have created their log
+# files by now.
+RUN: ls fuzz-0.log
+RUN: ls fuzz-1.log
+# Wait for libfuzzer to finish.
+# This probably isn't portable but we need a way to block until
+# the fuzzer is done otherwise we might remove the files while
+# they are being used.
+RUN: while kill -0 ${FUZZER_PID}; do : ; done
+RUN: rm -f fuzz-{0,1}.log
+RUN: rm -rf FuzzerJobsTestCORPUS
+RUN: FileCheck -input-file=%t-fuzzer-jobs-test.log %s
+RUN: rm %t-fuzzer-jobs-test.log
+RUN: cd ../
+
+CHECK-DAG: Job 0 exited with exit code 0
+CHECK-DAG: Job 1 exited with exit code 0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-leak.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-leak.test
new file mode 100644
index 00000000..9cf5c743
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-leak.test
@@ -0,0 +1,35 @@
+REQUIRES: lsan
+RUN: not LLVMFuzzer-LeakTest -runs=100000 -detect_leaks=1 2>&1 | FileCheck %s --check-prefix=LEAK_DURING
+LEAK_DURING: ERROR: LeakSanitizer: detected memory leaks
+LEAK_DURING: Direct leak of 4 byte(s) in 1 object(s) allocated from:
+LEAK_DURING: INFO: to ignore leaks on libFuzzer side use -detect_leaks=0
+LEAK_DURING: Test unit written to ./leak-
+LEAK_DURING-NOT: DONE
+LEAK_DURING-NOT: Done
+
+RUN: not LLVMFuzzer-LeakTest -runs=0 -detect_leaks=1 %S 2>&1 | FileCheck %s --check-prefix=LEAK_IN_CORPUS
+LEAK_IN_CORPUS: ERROR: LeakSanitizer: detected memory leaks
+LEAK_IN_CORPUS: INFO: a leak has been found in the initial corpus.
+
+RUN: not LLVMFuzzer-LeakTest -runs=100000000 %S/hi.txt 2>&1 | FileCheck %s --check-prefix=MULTI_RUN_LEAK
+MULTI_RUN_LEAK-NOT: pulse
+MULTI_RUN_LEAK: LeakSanitizer: detected memory leaks
+
+RUN: not LLVMFuzzer-LeakTest -runs=100000 -detect_leaks=0 2>&1 | FileCheck %s --check-prefix=LEAK_AFTER
+RUN: not LLVMFuzzer-LeakTest -runs=100000                 2>&1 | FileCheck %s --check-prefix=LEAK_DURING
+RUN: not LLVMFuzzer-ThreadedLeakTest -runs=100000 -detect_leaks=0 2>&1 | FileCheck %s --check-prefix=LEAK_AFTER
+RUN: not LLVMFuzzer-ThreadedLeakTest -runs=100000                 2>&1 | FileCheck %s --check-prefix=LEAK_DURING
+LEAK_AFTER: Done 100000 runs in
+LEAK_AFTER: ERROR: LeakSanitizer: detected memory leaks
+
+RUN: not LLVMFuzzer-LeakTest -runs=100000 -max_len=1 2>&1 | FileCheck %s --check-prefix=MAX_LEN_1
+MAX_LEN_1: Test unit written to ./leak-7cf184f4c67ad58283ecb19349720b0cae756829
+
+RUN: not LLVMFuzzer-LeakTimeoutTest -timeout=1 2>&1 | FileCheck %s --check-prefix=LEAK_TIMEOUT
+LEAK_TIMEOUT: ERROR: libFuzzer: timeout after
+LEAK_TIMEOUT-NOT: LeakSanitizer
+
+RUN: LLVMFuzzer-AccumulateAllocationsTest -detect_leaks=1 -runs=100000 2>&1 | FileCheck %s --check-prefix=ACCUMULATE_ALLOCS
+ACCUMULATE_ALLOCS: INFO: libFuzzer disabled leak detection after every mutation
+
+RUN: LLVMFuzzer-LeakTest -error_exitcode=0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-oom-with-profile.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-oom-with-profile.test
new file mode 100644
index 00000000..2b2b0b9d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-oom-with-profile.test
@@ -0,0 +1,6 @@
+REQUIRES: linux
+RUN: not LLVMFuzzer-OutOfMemoryTest -rss_limit_mb=300 2>&1 | FileCheck %s
+CHECK: ERROR: libFuzzer: out-of-memory (used: {{.*}}; limit: 300Mb)
+CHECK: Live Heap Allocations
+CHECK: Test unit written to ./oom-
+SUMMARY: libFuzzer: out-of-memory
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-oom.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-oom.test
new file mode 100644
index 00000000..8caf649e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-oom.test
@@ -0,0 +1,11 @@
+RUN: not LLVMFuzzer-OutOfMemoryTest -rss_limit_mb=300 2>&1 | FileCheck %s
+CHECK: ERROR: libFuzzer: out-of-memory (used: {{.*}}; limit: 300Mb)
+CHECK: Test unit written to ./oom-
+SUMMARY: libFuzzer: out-of-memory
+
+RUN: not LLVMFuzzer-OutOfMemorySingleLargeMallocTest 2>&1 | FileCheck %s --check-prefix=SINGLE_LARGE_MALLOC
+SINGLE_LARGE_MALLOC: libFuzzer: out-of-memory (malloc(42{{.*}}))
+SINGLE_LARGE_MALLOC: in LLVMFuzzerTestOneInput
+
+# Check that -rss_limit_mb=0 means no limit.
+RUN: LLVMFuzzer-AccumulateAllocationsTest -runs=1000 -rss_limit_mb=0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-printcovpcs.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-printcovpcs.test
new file mode 100644
index 00000000..e4c6f0ed
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-printcovpcs.test
@@ -0,0 +1,8 @@
+RUN: LLVMFuzzer-SimpleTest -print_pcs=1 -seed=1 2>&1 | FileCheck %s --check-prefix=PCS
+PCS-NOT: NEW_PC
+PCS:INITED
+PCS:NEW_PC: {{0x[a-f0-9]+}}
+PCS:NEW_PC: {{0x[a-f0-9]+}}
+PCS:NEW
+PCS:BINGO
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-runs.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-runs.test
new file mode 100644
index 00000000..056c4478
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-runs.test
@@ -0,0 +1,8 @@
+RUN: mkdir -p %t
+RUN: echo abcd > %t/NthRunCrashTest.in
+RUN: LLVMFuzzer-NthRunCrashTest %t/NthRunCrashTest.in
+RUN: LLVMFuzzer-NthRunCrashTest %t/NthRunCrashTest.in -runs=10
+RUN: not LLVMFuzzer-NthRunCrashTest %t/NthRunCrashTest.in -runs=10000 2>&1 | FileCheck %s
+RUN: rm %t/NthRunCrashTest.in
+CHECK: BINGO
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-seed.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-seed.test
new file mode 100644
index 00000000..f1bdf9e4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-seed.test
@@ -0,0 +1,3 @@
+RUN: LLVMFuzzer-SimpleCmpTest -seed=-1 -runs=0 2>&1 | FileCheck %s --check-prefix=CHECK_SEED_MINUS_ONE
+CHECK_SEED_MINUS_ONE: Seed: 4294967295
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-segv.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-segv.test
new file mode 100644
index 00000000..330f03bc
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-segv.test
@@ -0,0 +1,5 @@
+RUN: ASAN_OPTIONS=handle_segv=0 not LLVMFuzzer-NullDerefTest 2>&1 | FileCheck %s --check-prefix=LIBFUZZER_OWN_SEGV_HANDLER
+LIBFUZZER_OWN_SEGV_HANDLER: == ERROR: libFuzzer: deadly signal
+LIBFUZZER_OWN_SEGV_HANDLER: SUMMARY: libFuzzer: deadly signal
+LIBFUZZER_OWN_SEGV_HANDLER: Test unit written to ./crash-
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-singleinputs.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-singleinputs.test
new file mode 100644
index 00000000..ca8403bf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-singleinputs.test
@@ -0,0 +1,16 @@
+RUN: not LLVMFuzzer-NullDerefTest %S/hi.txt 2>&1 | FileCheck %s --check-prefix=SingleInput
+SingleInput-NOT: Test unit written to ./crash-
+
+RUN: rm -rf  %tmp/SINGLE_INPUTS
+RUN: mkdir -p  %tmp/SINGLE_INPUTS
+RUN: echo aaa > %tmp/SINGLE_INPUTS/aaa
+RUN: echo bbb > %tmp/SINGLE_INPUTS/bbb
+RUN: LLVMFuzzer-SimpleTest            %tmp/SINGLE_INPUTS/aaa %tmp/SINGLE_INPUTS/bbb 2>&1 | FileCheck %s --check-prefix=SINGLE_INPUTS
+RUN: LLVMFuzzer-SimpleTest -max_len=2 %tmp/SINGLE_INPUTS/aaa %tmp/SINGLE_INPUTS/bbb 2>&1 | FileCheck %s --check-prefix=SINGLE_INPUTS
+RUN: rm -rf  %tmp/SINGLE_INPUTS
+SINGLE_INPUTS: LLVMFuzzer-SimpleTest: Running 2 inputs 1 time(s) each.
+SINGLE_INPUTS: aaa in
+SINGLE_INPUTS: bbb in
+SINGLE_INPUTS: NOTE: fuzzing was not performed, you have only
+SINGLE_INPUTS: executed the target code on a fixed set of inputs.
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-threaded.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-threaded.test
new file mode 100644
index 00000000..c58a3345
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-threaded.test
@@ -0,0 +1,7 @@
+CHECK: Done 1000 runs in
+
+RUN: LLVMFuzzer-ThreadedTest -use_traces=1 -runs=1000  2>&1 | FileCheck %s
+RUN: LLVMFuzzer-ThreadedTest -use_traces=1 -runs=1000  2>&1 | FileCheck %s
+RUN: LLVMFuzzer-ThreadedTest -use_traces=1 -runs=1000  2>&1 | FileCheck %s
+RUN: LLVMFuzzer-ThreadedTest -use_traces=1 -runs=1000  2>&1 | FileCheck %s
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-timeout.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-timeout.test
new file mode 100644
index 00000000..beb08671
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-timeout.test
@@ -0,0 +1,19 @@
+RUN: not LLVMFuzzer-TimeoutTest -timeout=1 2>&1 | FileCheck %s --check-prefix=TimeoutTest
+TimeoutTest: ALARM: working on the last Unit for
+TimeoutTest: Test unit written to ./timeout-
+TimeoutTest: == ERROR: libFuzzer: timeout after
+TimeoutTest: #0
+TimeoutTest: #1
+TimeoutTest: #2
+TimeoutTest: SUMMARY: libFuzzer: timeout
+
+RUN: not LLVMFuzzer-TimeoutTest -timeout=1 %S/hi.txt 2>&1 | FileCheck %s --check-prefix=SingleInputTimeoutTest
+SingleInputTimeoutTest: ALARM: working on the last Unit for {{[1-3]}} seconds
+SingleInputTimeoutTest-NOT: Test unit written to ./timeout-
+
+RUN: LLVMFuzzer-TimeoutTest -timeout=1 -timeout_exitcode=0
+
+RUN: not LLVMFuzzer-TimeoutEmptyTest -timeout=1 2>&1 | FileCheck %s --check-prefix=TimeoutEmptyTest
+TimeoutEmptyTest: ALARM: working on the last Unit for
+TimeoutEmptyTest: == ERROR: libFuzzer: timeout after
+TimeoutEmptyTest: SUMMARY: libFuzzer: timeout
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-traces-hooks.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-traces-hooks.test
new file mode 100644
index 00000000..71fe6f2d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-traces-hooks.test
@@ -0,0 +1,25 @@
+// FIXME: Support sanitizer hooks for memcmp and strcmp need
+// to be implemented in the sanitizer runtime for platforms other
+// than linux
+REQUIRES: linux
+CHECK: BINGO
+Done1000000: Done 1000000 runs in
+
+RUN: not LLVMFuzzer-MemcmpTest               -seed=4294967295 -runs=100000   2>&1 | FileCheck %s
+RUN:     LLVMFuzzer-MemcmpTest -use_memcmp=0 -seed=4294967295 -runs=1000000  2>&1 | FileCheck %s --check-prefix=Done1000000
+
+RUN: not LLVMFuzzer-StrncmpTest               -seed=2 -runs=100000   2>&1 | FileCheck %s
+RUN:     LLVMFuzzer-StrncmpTest -use_memcmp=0 -seed=3 -runs=1000000  2>&1 | FileCheck %s --check-prefix=Done1000000
+
+RUN: not LLVMFuzzer-StrcmpTest               -seed=4 -runs=200000   2>&1 | FileCheck %s
+RUN:     LLVMFuzzer-StrcmpTest -use_memcmp=0 -seed=5 -runs=1000000  2>&1 | FileCheck %s --check-prefix=Done1000000
+
+RUN: not LLVMFuzzer-StrstrTest               -seed=6 -runs=200000   2>&1 | FileCheck %s
+RUN:     LLVMFuzzer-StrstrTest -use_memmem=0 -seed=7 -runs=1000000  2>&1 | FileCheck %s --check-prefix=Done1000000
+
+RUN: LLVMFuzzer-RepeatedMemcmp -seed=10 -runs=100000 2>&1 | FileCheck %s --check-prefix=RECOMMENDED_DICT
+RECOMMENDED_DICT:###### Recommended dictionary. ######
+RECOMMENDED_DICT-DAG: "foo"
+RECOMMENDED_DICT-DAG: "bar"
+RECOMMENDED_DICT:###### End of recommended dictionary. ######
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-ubsan.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-ubsan.test
new file mode 100644
index 00000000..0e8ad6c9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer-ubsan.test
@@ -0,0 +1,4 @@
+RUN: not LLVMFuzzer-SignedIntOverflowTest-Ubsan 2>&1 | FileCheck %s
+CHECK: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
+CHECK: Test unit written to ./crash-
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer.test
new file mode 100644
index 00000000..2f91c219
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/fuzzer.test
@@ -0,0 +1,57 @@
+CHECK: BINGO
+Done1000000: Done 1000000 runs in
+
+RUN: LLVMFuzzer-SimpleTest 2>&1 | FileCheck %s
+
+# only_ascii mode. Will perform some minimal self-validation.
+RUN: LLVMFuzzer-SimpleTest -only_ascii=1 2>&1
+
+RUN: LLVMFuzzer-SimpleCmpTest -max_total_time=1 -use_cmp=0 2>&1 | FileCheck %s --check-prefix=MaxTotalTime
+MaxTotalTime: Done {{.*}} runs in {{.}} second(s)
+
+RUN: not LLVMFuzzer-NullDerefTest                  2>&1 | FileCheck %s --check-prefix=NullDerefTest
+RUN: not LLVMFuzzer-NullDerefTest -close_fd_mask=3 2>&1 | FileCheck %s --check-prefix=NullDerefTest
+NullDerefTest: ERROR: AddressSanitizer: SEGV on unknown address
+NullDerefTest: Test unit written to ./crash-
+RUN: not LLVMFuzzer-NullDerefTest  -artifact_prefix=ZZZ 2>&1 | FileCheck %s --check-prefix=NullDerefTestPrefix
+NullDerefTestPrefix: Test unit written to ZZZcrash-
+RUN: not LLVMFuzzer-NullDerefTest  -artifact_prefix=ZZZ -exact_artifact_path=FOOBAR 2>&1 | FileCheck %s --check-prefix=NullDerefTestExactPath
+NullDerefTestExactPath: Test unit written to FOOBAR
+
+RUN: not LLVMFuzzer-NullDerefOnEmptyTest -print_final_stats=1 2>&1 | FileCheck %s --check-prefix=NULL_DEREF_ON_EMPTY
+NULL_DEREF_ON_EMPTY: stat::number_of_executed_units:
+
+#not LLVMFuzzer-FullCoverageSetTest -timeout=15 -seed=1 -mutate_depth=2 -use_full_coverage_set=1 2>&1 | FileCheck %s
+
+RUN: not LLVMFuzzer-CounterTest  -max_len=6 -seed=1 -timeout=15 2>&1 | FileCheck %s --check-prefix=COUNTERS
+
+COUNTERS: INITED {{.*}} {{bits:|ft:}}
+COUNTERS: NEW {{.*}} {{bits:|ft:}} {{[1-9]*}}
+COUNTERS: NEW {{.*}} {{bits:|ft:}} {{[1-9]*}}
+COUNTERS: BINGO
+
+# Don't run UninstrumentedTest for now since we build libFuzzer itself with asan.
+DISABLED: not LLVMFuzzer-UninstrumentedTest-Uninstrumented 2>&1 | FileCheck %s --check-prefix=UNINSTRUMENTED
+UNINSTRUMENTED: ERROR: __sanitizer_set_death_callback is not defined. Exiting.
+
+RUN: not LLVMFuzzer-UninstrumentedTest-NoCoverage 2>&1 | FileCheck %s --check-prefix=NO_COVERAGE
+NO_COVERAGE: ERROR: no interesting inputs were found. Is the code instrumented for coverage? Exiting
+
+RUN: not LLVMFuzzer-BufferOverflowOnInput 2>&1 | FileCheck %s --check-prefix=OOB
+OOB: AddressSanitizer: heap-buffer-overflow
+OOB: is located 0 bytes to the right of 3-byte region
+
+RUN: not LLVMFuzzer-InitializeTest -use_value_profile=1 2>&1 | FileCheck %s
+
+RUN: not LLVMFuzzer-DSOTest 2>&1 | FileCheck %s --check-prefix=DSO
+DSO: INFO: Loaded 3 modules
+DSO: BINGO
+
+RUN: LLVMFuzzer-SimpleTest  -exit_on_src_pos=SimpleTest.cpp:17                 2>&1 | FileCheck %s --check-prefix=EXIT_ON_SRC_POS
+RUN: LLVMFuzzer-ShrinkControlFlowTest  -exit_on_src_pos=ShrinkControlFlowTest.cpp:23 2>&1 | FileCheck %s --check-prefix=EXIT_ON_SRC_POS
+EXIT_ON_SRC_POS: INFO: found line matching '{{.*}}', exiting.
+
+RUN: ASAN_OPTIONS=strict_string_checks=1 not LLVMFuzzer-StrncmpOOBTest -seed=1 -runs=1000000 2>&1 | FileCheck %s --check-prefix=STRNCMP
+STRNCMP: AddressSanitizer: heap-buffer-overflow
+STRNCMP-NOT: __sanitizer_weak_hook_strncmp
+STRNCMP: in LLVMFuzzerTestOneInput
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/hi.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/hi.txt
new file mode 100644
index 00000000..2f9031f0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/hi.txt
@@ -0,0 +1 @@
+Hi!
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/lit.cfg b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/lit.cfg
new file mode 100644
index 00000000..745af0c3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/lit.cfg
@@ -0,0 +1,29 @@
+import lit.formats
+import sys
+
+config.name = "LLVMFuzzer"
+config.test_format = lit.formats.ShTest(True)
+config.suffixes = ['.test']
+config.test_source_root = os.path.dirname(__file__)
+
+# Tweak PATH to include llvm tools dir and current exec dir.
+llvm_tools_dir = getattr(config, 'llvm_tools_dir', None)
+if (not llvm_tools_dir) or (not os.path.exists(llvm_tools_dir)):
+  lit_config.fatal("Invalid llvm_tools_dir config attribute: %r" % llvm_tools_dir)
+path = os.path.pathsep.join((llvm_tools_dir, config.test_exec_root,
+                             config.environment['PATH']))
+config.environment['PATH'] = path
+
+if config.has_lsan:
+  lit_config.note('lsan feature available')
+  config.available_features.add('lsan')
+else:
+  lit_config.note('lsan feature unavailable')
+
+if sys.platform.startswith('linux'):
+  # Note the value of ``sys.platform`` is not consistent
+  # between python 2 and 3, hence the use of ``.startswith()``.
+  lit_config.note('linux feature available')
+  config.available_features.add('linux')
+else:
+  lit_config.note('linux feature unavailable')
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/lit.site.cfg.in b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/lit.site.cfg.in
new file mode 100644
index 00000000..03e86c48
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/lit.site.cfg.in
@@ -0,0 +1,4 @@
+config.test_exec_root = "@CMAKE_CURRENT_BINARY_DIR@"
+config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
+config.has_lsan = True if @HAS_LSAN@ == 1 else False
+lit_config.load_config(config, "@CMAKE_CURRENT_SOURCE_DIR@/lit.cfg")
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/merge.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/merge.test
new file mode 100644
index 00000000..1f1810eb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/merge.test
@@ -0,0 +1,46 @@
+CHECK: BINGO
+
+RUN: rm -rf  %tmp/T1 %tmp/T2
+RUN: mkdir -p %tmp/T1 %tmp/T2
+RUN: echo F..... > %tmp/T1/1
+RUN: echo .U.... > %tmp/T1/2
+RUN: echo ..Z... > %tmp/T1/3
+
+# T1 has 3 elements, T2 is empty.
+RUN: LLVMFuzzer-FullCoverageSetTest         -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=CHECK1
+CHECK1: MERGE-OUTER: 3 files, 3 in the initial corpus
+CHECK1: MERGE-OUTER: 0 new files with 0 new features added
+
+RUN: echo ...Z.. > %tmp/T2/1
+RUN: echo ....E. > %tmp/T2/2
+RUN: echo .....R > %tmp/T2/3
+RUN: echo F..... > %tmp/T2/a
+RUN: echo .U.... > %tmp/T2/b
+RUN: echo ..Z... > %tmp/T2/c
+
+# T1 has 3 elements, T2 has 6 elements, only 3 are new.
+RUN: LLVMFuzzer-FullCoverageSetTest         -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=CHECK2
+CHECK2: MERGE-OUTER: 9 files, 3 in the initial corpus
+CHECK2: MERGE-OUTER: 3 new files with 3 new features added
+
+# Now, T1 has 6 units and T2 has no new interesting units.
+RUN: LLVMFuzzer-FullCoverageSetTest         -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=CHECK3
+CHECK3: MERGE-OUTER: 12 files, 6 in the initial corpus
+CHECK3: MERGE-OUTER: 0 new files with 0 new features added
+
+# Check that we respect max_len during the merge and don't crash.
+RUN: rm %tmp/T1/??*
+RUN: echo looooooooong > %tmp/T2/looooooooong
+RUN: LLVMFuzzer-FullCoverageSetTest         -merge=1 %tmp/T1 %tmp/T2 -max_len=6 2>&1 | FileCheck %s --check-prefix=MAX_LEN
+MAX_LEN: MERGE-OUTER: 3 new files
+
+# Check that merge tolerates failures.
+RUN: rm %tmp/T1/??*
+RUN: echo 'FUZZER' > %tmp/T2/FUZZER
+RUN: LLVMFuzzer-FullCoverageSetTest -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=MERGE_WITH_CRASH
+MERGE_WITH_CRASH: MERGE-OUTER: succesfull in 2 attempt(s)
+MERGE_WITH_CRASH: MERGE-OUTER: 3 new files
+
+# Check that we actually limit the size with max_len
+RUN: LLVMFuzzer-FullCoverageSetTest -merge=1 %tmp/T1 %tmp/T2  -max_len=5 2>&1 | FileCheck %s --check-prefix=MERGE_LEN5
+MERGE_LEN5: MERGE-OUTER: succesfull in 1 attempt(s)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/minimize_crash.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/minimize_crash.test
new file mode 100644
index 00000000..7e540659
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/minimize_crash.test
@@ -0,0 +1,6 @@
+RUN: echo 'Hi!rv349f34t3gg' > not_minimal_crash
+RUN: LLVMFuzzer-NullDerefTest -minimize_crash=1 not_minimal_crash -max_total_time=2 2>&1 | FileCheck %s
+CHECK: CRASH_MIN: failed to minimize beyond minimized-from-{{.*}} (3 bytes), exiting
+RUN: LLVMFuzzer-NullDerefTest -minimize_crash=1 not_minimal_crash -max_total_time=2 -exact_artifact_path=exact_minimized_path 2>&1 | FileCheck %s --check-prefix=CHECK_EXACT
+CHECK_EXACT: CRASH_MIN: failed to minimize beyond exact_minimized_path (3 bytes), exiting
+RUN: rm not_minimal_crash minimized-from-* exact_minimized_path
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/no-coverage/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/no-coverage/CMakeLists.txt
new file mode 100644
index 00000000..d2f6f438
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/no-coverage/CMakeLists.txt
@@ -0,0 +1,29 @@
+# These tests are not instrumented with coverage,
+# but have coverage rt in the binary.
+
+set(CMAKE_CXX_FLAGS
+  "${LIBFUZZER_FLAGS_BASE} -fno-sanitize-coverage=edge,trace-cmp,indirect-calls,8bit-counters,trace-pc-guard")
+
+set(NoCoverageTests
+  UninstrumentedTest
+  )
+
+foreach(Test ${NoCoverageTests})
+  add_libfuzzer_test(${Test}-NoCoverage SOURCES ../${Test}.cpp)
+endforeach()
+
+
+###############################################################################
+# AFL Driver test
+###############################################################################
+
+add_executable(AFLDriverTest
+  ../AFLDriverTest.cpp ../../afl/afl_driver.cpp)
+
+set_target_properties(AFLDriverTest
+    PROPERTIES RUNTIME_OUTPUT_DIRECTORY
+    "${CMAKE_BINARY_DIR}/lib/Fuzzer/test"
+    )
+
+# Propagate value into parent directory
+set(TestBinaries ${TestBinaries} AFLDriverTest PARENT_SCOPE)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/repeated-bytes.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/repeated-bytes.test
new file mode 100644
index 00000000..71394087
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/repeated-bytes.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: LLVMFuzzer-RepeatedBytesTest -seed=1 -runs=1000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/shrink.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/shrink.test
new file mode 100644
index 00000000..edb86cb1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/shrink.test
@@ -0,0 +1,7 @@
+RUN: LLVMFuzzer-ShrinkControlFlowTest -seed=1 -exit_on_item=0eb8e4ed029b774d80f2b66408203801cb982a60 -runs=1000000  -shrink=1 2>&1 | FileCheck %s --check-prefix=SHRINK1
+RUN: LLVMFuzzer-ShrinkControlFlowTest -seed=1 -exit_on_item=0eb8e4ed029b774d80f2b66408203801cb982a60 -runs=1000000 -shrink=0 2>&1 | FileCheck %s --check-prefix=SHRINK0
+RUN: LLVMFuzzer-ShrinkValueProfileTest -seed=1 -exit_on_item=aea2e3923af219a8956f626558ef32f30a914ebc -runs=100000 -shrink=1 -use_value_profile=1 2>&1 | FileCheck %s --check-prefix=SHRINK1_VP
+
+SHRINK0: Done 1000000 runs in
+SHRINK1: INFO: found item with checksum '0eb8e4ed029b774d80f2b66408203801cb982a60', exiting.
+SHRINK1_VP: INFO: found item with checksum 'aea2e3923af219a8956f626558ef32f30a914ebc', exiting
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/simple-cmp.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/simple-cmp.test
new file mode 100644
index 00000000..145a0366
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/simple-cmp.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-SimpleCmpTest -seed=1 -runs=100000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/standalone.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/standalone.test
new file mode 100644
index 00000000..3097b3ff
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/standalone.test
@@ -0,0 +1,4 @@
+RUN: LLVMFuzzer-StandaloneInitializeTest %S/hi.txt %S/dict1.txt 2>&1 | FileCheck %s
+CHECK: StandaloneFuzzTargetMain: running 2 inputs
+CHECK: Done:    {{.*}}hi.txt: (3 bytes)
+CHECK: Done:    {{.*}}dict1.txt: (61 bytes)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/swap-cmp.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/swap-cmp.test
new file mode 100644
index 00000000..908b7986
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/swap-cmp.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-SwapCmpTest -seed=1 -runs=10000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/trace-malloc.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/trace-malloc.test
new file mode 100644
index 00000000..c9514790
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/trace-malloc.test
@@ -0,0 +1,10 @@
+RUN: LLVMFuzzer-TraceMallocTest -seed=1 -trace_malloc=1 -runs=10000 2>&1 | FileCheck %s
+CHECK-DAG: MallocFreeTracer: STOP 0 0 (same)
+CHECK-DAG: MallocFreeTracer: STOP 0 1 (DIFFERENT)
+CHECK-DAG: MallocFreeTracer: STOP 1 0 (DIFFERENT)
+CHECK-DAG: MallocFreeTracer: STOP 1 1 (same)
+
+RUN: LLVMFuzzer-TraceMallocTest -seed=1 -trace_malloc=2 -runs=1000 2>&1 | FileCheck %s --check-prefix=TRACE2
+TRACE2-DAG: FREE[0]
+TRACE2-DAG: MALLOC[0]
+TRACE2-DAG: in LLVMFuzzerTestOneInput
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ubsan/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ubsan/CMakeLists.txt
new file mode 100644
index 00000000..7a9eacdb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ubsan/CMakeLists.txt
@@ -0,0 +1,15 @@
+# These tests are instrumented with ubsan in non-recovery mode.
+
+set(CMAKE_CXX_FLAGS
+  "${LIBFUZZER_FLAGS_BASE} -fsanitize=undefined -fno-sanitize-recover=all")
+
+set(UbsanTests
+  SignedIntOverflowTest
+  )
+
+foreach(Test ${UbsanTests})
+  add_libfuzzer_test(${Test}-Ubsan SOURCES ../${Test}.cpp)
+endforeach()
+
+# Propagate value into parent directory
+set(TestBinaries ${TestBinaries} PARENT_SCOPE)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ulimit.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ulimit.test
new file mode 100644
index 00000000..a60636c3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/ulimit.test
@@ -0,0 +1,2 @@
+RUN: ulimit -s 1000
+RUN: LLVMFuzzer-SimpleTest
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/uninstrumented/CMakeLists.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/uninstrumented/CMakeLists.txt
new file mode 100644
index 00000000..29b66e6e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/uninstrumented/CMakeLists.txt
@@ -0,0 +1,16 @@
+# These tests are not instrumented with coverage and don't
+# have coverage rt in the binary.
+
+set(CMAKE_CXX_FLAGS
+  "${LIBFUZZER_FLAGS_BASE} -fno-sanitize=all -fno-sanitize-coverage=edge,trace-cmp,indirect-calls,8bit-counters,trace-pc-guard")
+
+set(UninstrumentedTests
+  UninstrumentedTest
+  )
+
+foreach(Test ${UninstrumentedTests})
+  add_libfuzzer_test(${Test}-Uninstrumented SOURCES ../${Test}.cpp)
+endforeach()
+
+# Propagate value into parent directory
+set(TestBinaries ${TestBinaries} PARENT_SCOPE)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/unit/lit.cfg b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/unit/lit.cfg
new file mode 100644
index 00000000..0cc31939
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/unit/lit.cfg
@@ -0,0 +1,7 @@
+import lit.formats
+
+config.name = "LLVMFuzzer-Unittest"
+print config.test_exec_root
+config.test_format = lit.formats.GoogleTest(".", "Unittest")
+config.suffixes = []
+config.test_source_root = config.test_exec_root
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/unit/lit.site.cfg.in b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/unit/lit.site.cfg.in
new file mode 100644
index 00000000..114daf47
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/unit/lit.site.cfg.in
@@ -0,0 +1,2 @@
+config.test_exec_root = "@CMAKE_CURRENT_BINARY_DIR@"
+lit_config.load_config(config, "@CMAKE_CURRENT_SOURCE_DIR@/unit/lit.cfg")
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp.test
new file mode 100644
index 00000000..48edba4f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-SimpleCmpTest -seed=1 -use_cmp=0 -use_value_profile=1 -runs=100000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp2.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp2.test
new file mode 100644
index 00000000..43d62400
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp2.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-SimpleHashTest -seed=1 -use_cmp=0 -use_value_profile=1 -runs=100000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp3.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp3.test
new file mode 100644
index 00000000..8a962763
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp3.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-AbsNegAndConstantTest -seed=1 -use_cmp=0 -use_value_profile=1 -runs=100000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp4.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp4.test
new file mode 100644
index 00000000..1e7131e5
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-cmp4.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-AbsNegAndConstant64Test -seed=1 -use_cmp=0 -use_value_profile=1 -runs=100000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-div.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-div.test
new file mode 100644
index 00000000..ba45e412
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-div.test
@@ -0,0 +1,3 @@
+CHECK: AddressSanitizer: FPE
+RUN: not LLVMFuzzer-DivTest -seed=1 -use_value_profile=1 -runs=10000000 2>&1 | FileCheck %s
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-load.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-load.test
new file mode 100644
index 00000000..14d3109a
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-load.test
@@ -0,0 +1,3 @@
+CHECK: AddressSanitizer: global-buffer-overflow
+RUN: not LLVMFuzzer-LoadTest -seed=1 -use_cmp=0 -use_value_profile=1 -runs=10000000 2>&1 | FileCheck %s
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-mem.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-mem.test
new file mode 100644
index 00000000..09d737db
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-mem.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-SingleMemcmpTest -seed=1  -use_cmp=0 -use_memcmp=0 -use_value_profile=1 -runs=10000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-set.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-set.test
new file mode 100644
index 00000000..9d06c365
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-set.test
@@ -0,0 +1,3 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-FourIndependentBranchesTest -seed=1 -use_cmp=0 -use_value_profile=1 -runs=100000000 2>&1 | FileCheck %s
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-strcmp.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-strcmp.test
new file mode 100644
index 00000000..1e7ef9b4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-strcmp.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-SingleStrcmpTest -seed=1  -use_cmp=0 -use_memcmp=0 -use_value_profile=1 -runs=10000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-strncmp.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-strncmp.test
new file mode 100644
index 00000000..65097318
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-strncmp.test
@@ -0,0 +1,2 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-SingleStrncmpTest -seed=1 -use_cmp=0 -use_memcmp=0 -use_value_profile=1 -runs=10000000 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-switch.test b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-switch.test
new file mode 100644
index 00000000..1947f568
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/Fuzzer/test/value-profile-switch.test
@@ -0,0 +1,3 @@
+CHECK: BINGO
+RUN: not LLVMFuzzer-SwitchTest  -use_cmp=0 -use_value_profile=1 -runs=100000000 -seed=1 2>&1 | FileCheck %s
+RUN: not LLVMFuzzer-Switch2Test -use_cmp=0 -use_value_profile=1 -runs=100000000 -seed=1 2>&1 | FileCheck %s
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/doctest/doctest.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/doctest/doctest.h
new file mode 100644
index 00000000..5c754cde
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/doctest/doctest.h
@@ -0,0 +1,7106 @@
+// ====================================================================== lgtm [cpp/missing-header-guard]
+// == DO NOT MODIFY THIS FILE BY HAND - IT IS AUTO GENERATED BY CMAKE! ==
+// ======================================================================
+//
+// doctest.h - the lightest feature-rich C++ single-header testing framework for unit tests and TDD
+//
+// Copyright (c) 2016-2023 Viktor Kirilov
+//
+// Distributed under the MIT Software License
+// See accompanying file LICENSE.txt or copy at
+// https://opensource.org/licenses/MIT
+//
+// The documentation can be found at the library's page:
+// https://github.com/doctest/doctest/blob/master/doc/markdown/readme.md
+//
+// =================================================================================================
+// =================================================================================================
+// =================================================================================================
+//
+// The library is heavily influenced by Catch - https://github.com/catchorg/Catch2
+// which uses the Boost Software License - Version 1.0
+// see here - https://github.com/catchorg/Catch2/blob/master/LICENSE.txt
+//
+// The concept of subcases (sections in Catch) and expression decomposition are from there.
+// Some parts of the code are taken directly:
+// - stringification - the detection of "ostream& operator<<(ostream&, const T&)" and StringMaker<>
+// - the Approx() helper class for floating point comparison
+// - colors in the console
+// - breaking into a debugger
+// - signal / SEH handling
+// - timer
+// - XmlWriter class - thanks to Phil Nash for allowing the direct reuse (AKA copy/paste)
+//
+// The expression decomposing templates are taken from lest - https://github.com/martinmoene/lest
+// which uses the Boost Software License - Version 1.0
+// see here - https://github.com/martinmoene/lest/blob/master/LICENSE.txt
+//
+// =================================================================================================
+// =================================================================================================
+// =================================================================================================
+
+#ifndef DOCTEST_LIBRARY_INCLUDED
+#define DOCTEST_LIBRARY_INCLUDED
+
+// =================================================================================================
+// == VERSION ======================================================================================
+// =================================================================================================
+
+#define DOCTEST_VERSION_MAJOR 2
+#define DOCTEST_VERSION_MINOR 4
+#define DOCTEST_VERSION_PATCH 11
+
+// util we need here
+#define DOCTEST_TOSTR_IMPL(x) #x
+#define DOCTEST_TOSTR(x) DOCTEST_TOSTR_IMPL(x)
+
+#define DOCTEST_VERSION_STR                                                                        \
+    DOCTEST_TOSTR(DOCTEST_VERSION_MAJOR) "."                                                       \
+    DOCTEST_TOSTR(DOCTEST_VERSION_MINOR) "."                                                       \
+    DOCTEST_TOSTR(DOCTEST_VERSION_PATCH)
+
+#define DOCTEST_VERSION                                                                            \
+    (DOCTEST_VERSION_MAJOR * 10000 + DOCTEST_VERSION_MINOR * 100 + DOCTEST_VERSION_PATCH)
+
+// =================================================================================================
+// == COMPILER VERSION =============================================================================
+// =================================================================================================
+
+// ideas for the version stuff are taken from here: https://github.com/cxxstuff/cxx_detect
+
+#ifdef _MSC_VER
+#define DOCTEST_CPLUSPLUS _MSVC_LANG
+#else
+#define DOCTEST_CPLUSPLUS __cplusplus
+#endif
+
+#define DOCTEST_COMPILER(MAJOR, MINOR, PATCH) ((MAJOR)*10000000 + (MINOR)*100000 + (PATCH))
+
+// GCC/Clang and GCC/MSVC are mutually exclusive, but Clang/MSVC are not because of clang-cl...
+#if defined(_MSC_VER) && defined(_MSC_FULL_VER)
+#if _MSC_VER == _MSC_FULL_VER / 10000
+#define DOCTEST_MSVC DOCTEST_COMPILER(_MSC_VER / 100, _MSC_VER % 100, _MSC_FULL_VER % 10000)
+#else // MSVC
+#define DOCTEST_MSVC                                                                               \
+    DOCTEST_COMPILER(_MSC_VER / 100, (_MSC_FULL_VER / 100000) % 100, _MSC_FULL_VER % 100000)
+#endif // MSVC
+#endif // MSVC
+#if defined(__clang__) && defined(__clang_minor__) && defined(__clang_patchlevel__)
+#define DOCTEST_CLANG DOCTEST_COMPILER(__clang_major__, __clang_minor__, __clang_patchlevel__)
+#elif defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) &&              \
+        !defined(__INTEL_COMPILER)
+#define DOCTEST_GCC DOCTEST_COMPILER(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
+#endif // GCC
+#if defined(__INTEL_COMPILER)
+#define DOCTEST_ICC DOCTEST_COMPILER(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)
+#endif // ICC
+
+#ifndef DOCTEST_MSVC
+#define DOCTEST_MSVC 0
+#endif // DOCTEST_MSVC
+#ifndef DOCTEST_CLANG
+#define DOCTEST_CLANG 0
+#endif // DOCTEST_CLANG
+#ifndef DOCTEST_GCC
+#define DOCTEST_GCC 0
+#endif // DOCTEST_GCC
+#ifndef DOCTEST_ICC
+#define DOCTEST_ICC 0
+#endif // DOCTEST_ICC
+
+// =================================================================================================
+// == COMPILER WARNINGS HELPERS ====================================================================
+// =================================================================================================
+
+#if DOCTEST_CLANG && !DOCTEST_ICC
+#define DOCTEST_PRAGMA_TO_STR(x) _Pragma(#x)
+#define DOCTEST_CLANG_SUPPRESS_WARNING_PUSH _Pragma("clang diagnostic push")
+#define DOCTEST_CLANG_SUPPRESS_WARNING(w) DOCTEST_PRAGMA_TO_STR(clang diagnostic ignored w)
+#define DOCTEST_CLANG_SUPPRESS_WARNING_POP _Pragma("clang diagnostic pop")
+#define DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH(w)                                                \
+    DOCTEST_CLANG_SUPPRESS_WARNING_PUSH DOCTEST_CLANG_SUPPRESS_WARNING(w)
+#else // DOCTEST_CLANG
+#define DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+#define DOCTEST_CLANG_SUPPRESS_WARNING(w)
+#define DOCTEST_CLANG_SUPPRESS_WARNING_POP
+#define DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH(w)
+#endif // DOCTEST_CLANG
+
+#if DOCTEST_GCC
+#define DOCTEST_PRAGMA_TO_STR(x) _Pragma(#x)
+#define DOCTEST_GCC_SUPPRESS_WARNING_PUSH _Pragma("GCC diagnostic push")
+#define DOCTEST_GCC_SUPPRESS_WARNING(w) DOCTEST_PRAGMA_TO_STR(GCC diagnostic ignored w)
+#define DOCTEST_GCC_SUPPRESS_WARNING_POP _Pragma("GCC diagnostic pop")
+#define DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH(w)                                                  \
+    DOCTEST_GCC_SUPPRESS_WARNING_PUSH DOCTEST_GCC_SUPPRESS_WARNING(w)
+#else // DOCTEST_GCC
+#define DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+#define DOCTEST_GCC_SUPPRESS_WARNING(w)
+#define DOCTEST_GCC_SUPPRESS_WARNING_POP
+#define DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH(w)
+#endif // DOCTEST_GCC
+
+#if DOCTEST_MSVC
+#define DOCTEST_MSVC_SUPPRESS_WARNING_PUSH __pragma(warning(push))
+#define DOCTEST_MSVC_SUPPRESS_WARNING(w) __pragma(warning(disable : w))
+#define DOCTEST_MSVC_SUPPRESS_WARNING_POP __pragma(warning(pop))
+#define DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(w)                                                 \
+    DOCTEST_MSVC_SUPPRESS_WARNING_PUSH DOCTEST_MSVC_SUPPRESS_WARNING(w)
+#else // DOCTEST_MSVC
+#define DOCTEST_MSVC_SUPPRESS_WARNING_PUSH
+#define DOCTEST_MSVC_SUPPRESS_WARNING(w)
+#define DOCTEST_MSVC_SUPPRESS_WARNING_POP
+#define DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(w)
+#endif // DOCTEST_MSVC
+
+// =================================================================================================
+// == COMPILER WARNINGS ============================================================================
+// =================================================================================================
+
+// both the header and the implementation suppress all of these,
+// so it only makes sense to aggregate them like so
+#define DOCTEST_SUPPRESS_COMMON_WARNINGS_PUSH                                                      \
+    DOCTEST_CLANG_SUPPRESS_WARNING_PUSH                                                            \
+    DOCTEST_CLANG_SUPPRESS_WARNING("-Wunknown-pragmas")                                            \
+    DOCTEST_CLANG_SUPPRESS_WARNING("-Wweak-vtables")                                               \
+    DOCTEST_CLANG_SUPPRESS_WARNING("-Wpadded")                                                     \
+    DOCTEST_CLANG_SUPPRESS_WARNING("-Wmissing-prototypes")                                         \
+    DOCTEST_CLANG_SUPPRESS_WARNING("-Wc++98-compat")                                               \
+    DOCTEST_CLANG_SUPPRESS_WARNING("-Wc++98-compat-pedantic")                                      \
+                                                                                                   \
+    DOCTEST_GCC_SUPPRESS_WARNING_PUSH                                                              \
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wunknown-pragmas")                                              \
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wpragmas")                                                      \
+    DOCTEST_GCC_SUPPRESS_WARNING("-Weffc++")                                                       \
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wstrict-overflow")                                              \
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wstrict-aliasing")                                              \
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wmissing-declarations")                                         \
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wuseless-cast")                                                 \
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wnoexcept")                                                     \
+                                                                                                   \
+    DOCTEST_MSVC_SUPPRESS_WARNING_PUSH                                                             \
+    /* these 4 also disabled globally via cmake: */                                                \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4514) /* unreferenced inline function has been removed */        \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4571) /* SEH related */                                          \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4710) /* function not inlined */                                 \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4711) /* function selected for inline expansion*/                \
+    /* common ones */                                                                              \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4616) /* invalid compiler warning */                             \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4619) /* invalid compiler warning */                             \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4996) /* The compiler encountered a deprecated declaration */    \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4706) /* assignment within conditional expression */             \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4512) /* 'class' : assignment operator could not be generated */ \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4127) /* conditional expression is constant */                   \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4820) /* padding */                                              \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4625) /* copy constructor was implicitly deleted */              \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4626) /* assignment operator was implicitly deleted */           \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5027) /* move assignment operator implicitly deleted */          \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5026) /* move constructor was implicitly deleted */              \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4640) /* construction of local static object not thread-safe */  \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5045) /* Spectre mitigation for memory load */                   \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5264) /* 'variable-name': 'const' variable is not used */        \
+    /* static analysis */                                                                          \
+    DOCTEST_MSVC_SUPPRESS_WARNING(26439) /* Function may not throw. Declare it 'noexcept' */       \
+    DOCTEST_MSVC_SUPPRESS_WARNING(26495) /* Always initialize a member variable */                 \
+    DOCTEST_MSVC_SUPPRESS_WARNING(26451) /* Arithmetic overflow ... */                             \
+    DOCTEST_MSVC_SUPPRESS_WARNING(26444) /* Avoid unnamed objects with custom ctor and dtor... */  \
+    DOCTEST_MSVC_SUPPRESS_WARNING(26812) /* Prefer 'enum class' over 'enum' */
+
+#define DOCTEST_SUPPRESS_COMMON_WARNINGS_POP                                                       \
+    DOCTEST_CLANG_SUPPRESS_WARNING_POP                                                             \
+    DOCTEST_GCC_SUPPRESS_WARNING_POP                                                               \
+    DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+DOCTEST_SUPPRESS_COMMON_WARNINGS_PUSH
+
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wnon-virtual-dtor")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wdeprecated")
+
+DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+DOCTEST_GCC_SUPPRESS_WARNING("-Wctor-dtor-privacy")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wnon-virtual-dtor")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wsign-promo")
+
+DOCTEST_MSVC_SUPPRESS_WARNING_PUSH
+DOCTEST_MSVC_SUPPRESS_WARNING(4623) // default constructor was implicitly defined as deleted
+
+#define DOCTEST_MAKE_STD_HEADERS_CLEAN_FROM_WARNINGS_ON_WALL_BEGIN                                 \
+    DOCTEST_MSVC_SUPPRESS_WARNING_PUSH                                                             \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4548) /* before comma no effect; expected side - effect */       \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4265) /* virtual functions, but destructor is not virtual */     \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4986) /* exception specification does not match previous */      \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4350) /* 'member1' called instead of 'member2' */                \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4668) /* not defined as a preprocessor macro */                  \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4365) /* signed/unsigned mismatch */                             \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4774) /* format string not a string literal */                   \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4820) /* padding */                                              \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4625) /* copy constructor was implicitly deleted */              \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4626) /* assignment operator was implicitly deleted */           \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5027) /* move assignment operator implicitly deleted */          \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5026) /* move constructor was implicitly deleted */              \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4623) /* default constructor was implicitly deleted */           \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5039) /* pointer to pot. throwing function passed to extern C */ \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5045) /* Spectre mitigation for memory load */                   \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5105) /* macro producing 'defined' has undefined behavior */     \
+    DOCTEST_MSVC_SUPPRESS_WARNING(4738) /* storing float result in memory, loss of performance */  \
+    DOCTEST_MSVC_SUPPRESS_WARNING(5262) /* implicit fall-through */
+
+#define DOCTEST_MAKE_STD_HEADERS_CLEAN_FROM_WARNINGS_ON_WALL_END DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+// =================================================================================================
+// == FEATURE DETECTION ============================================================================
+// =================================================================================================
+
+// general compiler feature support table: https://en.cppreference.com/w/cpp/compiler_support
+// MSVC C++11 feature support table: https://msdn.microsoft.com/en-us/library/hh567368.aspx
+// GCC C++11 feature support table: https://gcc.gnu.org/projects/cxx-status.html
+// MSVC version table:
+// https://en.wikipedia.org/wiki/Microsoft_Visual_C%2B%2B#Internal_version_numbering
+// MSVC++ 14.3 (17) _MSC_VER == 1930 (Visual Studio 2022)
+// MSVC++ 14.2 (16) _MSC_VER == 1920 (Visual Studio 2019)
+// MSVC++ 14.1 (15) _MSC_VER == 1910 (Visual Studio 2017)
+// MSVC++ 14.0      _MSC_VER == 1900 (Visual Studio 2015)
+// MSVC++ 12.0      _MSC_VER == 1800 (Visual Studio 2013)
+// MSVC++ 11.0      _MSC_VER == 1700 (Visual Studio 2012)
+// MSVC++ 10.0      _MSC_VER == 1600 (Visual Studio 2010)
+// MSVC++ 9.0       _MSC_VER == 1500 (Visual Studio 2008)
+// MSVC++ 8.0       _MSC_VER == 1400 (Visual Studio 2005)
+
+// Universal Windows Platform support
+#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_APP)
+#define DOCTEST_CONFIG_NO_WINDOWS_SEH
+#endif // WINAPI_FAMILY
+#if DOCTEST_MSVC && !defined(DOCTEST_CONFIG_WINDOWS_SEH)
+#define DOCTEST_CONFIG_WINDOWS_SEH
+#endif // MSVC
+#if defined(DOCTEST_CONFIG_NO_WINDOWS_SEH) && defined(DOCTEST_CONFIG_WINDOWS_SEH)
+#undef DOCTEST_CONFIG_WINDOWS_SEH
+#endif // DOCTEST_CONFIG_NO_WINDOWS_SEH
+
+#if !defined(_WIN32) && !defined(__QNX__) && !defined(DOCTEST_CONFIG_POSIX_SIGNALS) &&             \
+        !defined(__EMSCRIPTEN__) && !defined(__wasi__)
+#define DOCTEST_CONFIG_POSIX_SIGNALS
+#endif // _WIN32
+#if defined(DOCTEST_CONFIG_NO_POSIX_SIGNALS) && defined(DOCTEST_CONFIG_POSIX_SIGNALS)
+#undef DOCTEST_CONFIG_POSIX_SIGNALS
+#endif // DOCTEST_CONFIG_NO_POSIX_SIGNALS
+
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+#if !defined(__cpp_exceptions) && !defined(__EXCEPTIONS) && !defined(_CPPUNWIND)                   \
+        || defined(__wasi__)
+#define DOCTEST_CONFIG_NO_EXCEPTIONS
+#endif // no exceptions
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+
+#ifdef DOCTEST_CONFIG_NO_EXCEPTIONS_BUT_WITH_ALL_ASSERTS
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+#define DOCTEST_CONFIG_NO_EXCEPTIONS
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS_BUT_WITH_ALL_ASSERTS
+
+#if defined(DOCTEST_CONFIG_NO_EXCEPTIONS) && !defined(DOCTEST_CONFIG_NO_TRY_CATCH_IN_ASSERTS)
+#define DOCTEST_CONFIG_NO_TRY_CATCH_IN_ASSERTS
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS && !DOCTEST_CONFIG_NO_TRY_CATCH_IN_ASSERTS
+
+#ifdef __wasi__
+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#endif
+
+#if defined(DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN) && !defined(DOCTEST_CONFIG_IMPLEMENT)
+#define DOCTEST_CONFIG_IMPLEMENT
+#endif // DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+#if DOCTEST_MSVC
+#define DOCTEST_SYMBOL_EXPORT __declspec(dllexport)
+#define DOCTEST_SYMBOL_IMPORT __declspec(dllimport)
+#else // MSVC
+#define DOCTEST_SYMBOL_EXPORT __attribute__((dllexport))
+#define DOCTEST_SYMBOL_IMPORT __attribute__((dllimport))
+#endif // MSVC
+#else  // _WIN32
+#define DOCTEST_SYMBOL_EXPORT __attribute__((visibility("default")))
+#define DOCTEST_SYMBOL_IMPORT
+#endif // _WIN32
+
+#ifdef DOCTEST_CONFIG_IMPLEMENTATION_IN_DLL
+#ifdef DOCTEST_CONFIG_IMPLEMENT
+#define DOCTEST_INTERFACE DOCTEST_SYMBOL_EXPORT
+#else // DOCTEST_CONFIG_IMPLEMENT
+#define DOCTEST_INTERFACE DOCTEST_SYMBOL_IMPORT
+#endif // DOCTEST_CONFIG_IMPLEMENT
+#else  // DOCTEST_CONFIG_IMPLEMENTATION_IN_DLL
+#define DOCTEST_INTERFACE
+#endif // DOCTEST_CONFIG_IMPLEMENTATION_IN_DLL
+
+// needed for extern template instantiations
+// see https://github.com/fmtlib/fmt/issues/2228
+#if DOCTEST_MSVC
+#define DOCTEST_INTERFACE_DECL
+#define DOCTEST_INTERFACE_DEF DOCTEST_INTERFACE
+#else // DOCTEST_MSVC
+#define DOCTEST_INTERFACE_DECL DOCTEST_INTERFACE
+#define DOCTEST_INTERFACE_DEF
+#endif // DOCTEST_MSVC
+
+#define DOCTEST_EMPTY
+
+#if DOCTEST_MSVC
+#define DOCTEST_NOINLINE __declspec(noinline)
+#define DOCTEST_UNUSED
+#define DOCTEST_ALIGNMENT(x)
+#elif DOCTEST_CLANG && DOCTEST_CLANG < DOCTEST_COMPILER(3, 5, 0)
+#define DOCTEST_NOINLINE
+#define DOCTEST_UNUSED
+#define DOCTEST_ALIGNMENT(x)
+#else
+#define DOCTEST_NOINLINE __attribute__((noinline))
+#define DOCTEST_UNUSED __attribute__((unused))
+#define DOCTEST_ALIGNMENT(x) __attribute__((aligned(x)))
+#endif
+
+#ifdef DOCTEST_CONFIG_NO_CONTRADICTING_INLINE
+#define DOCTEST_INLINE_NOINLINE inline
+#else
+#define DOCTEST_INLINE_NOINLINE inline DOCTEST_NOINLINE
+#endif
+
+#ifndef DOCTEST_NORETURN
+#if DOCTEST_MSVC && (DOCTEST_MSVC < DOCTEST_COMPILER(19, 0, 0))
+#define DOCTEST_NORETURN
+#else // DOCTEST_MSVC
+#define DOCTEST_NORETURN [[noreturn]]
+#endif // DOCTEST_MSVC
+#endif // DOCTEST_NORETURN
+
+#ifndef DOCTEST_NOEXCEPT
+#if DOCTEST_MSVC && (DOCTEST_MSVC < DOCTEST_COMPILER(19, 0, 0))
+#define DOCTEST_NOEXCEPT
+#else // DOCTEST_MSVC
+#define DOCTEST_NOEXCEPT noexcept
+#endif // DOCTEST_MSVC
+#endif // DOCTEST_NOEXCEPT
+
+#ifndef DOCTEST_CONSTEXPR
+#if DOCTEST_MSVC && (DOCTEST_MSVC < DOCTEST_COMPILER(19, 0, 0))
+#define DOCTEST_CONSTEXPR const
+#define DOCTEST_CONSTEXPR_FUNC inline
+#else // DOCTEST_MSVC
+#define DOCTEST_CONSTEXPR constexpr
+#define DOCTEST_CONSTEXPR_FUNC constexpr
+#endif // DOCTEST_MSVC
+#endif // DOCTEST_CONSTEXPR
+
+#ifndef DOCTEST_NO_SANITIZE_INTEGER
+#if DOCTEST_CLANG >= DOCTEST_COMPILER(3, 7, 0)
+#define DOCTEST_NO_SANITIZE_INTEGER __attribute__((no_sanitize("integer")))
+#else
+#define DOCTEST_NO_SANITIZE_INTEGER
+#endif
+#endif // DOCTEST_NO_SANITIZE_INTEGER
+
+// =================================================================================================
+// == FEATURE DETECTION END ========================================================================
+// =================================================================================================
+
+#define DOCTEST_DECLARE_INTERFACE(name)                                                            \
+    virtual ~name();                                                                               \
+    name() = default;                                                                              \
+    name(const name&) = delete;                                                                    \
+    name(name&&) = delete;                                                                         \
+    name& operator=(const name&) = delete;                                                         \
+    name& operator=(name&&) = delete;
+
+#define DOCTEST_DEFINE_INTERFACE(name)                                                             \
+    name::~name() = default;
+
+// internal macros for string concatenation and anonymous variable name generation
+#define DOCTEST_CAT_IMPL(s1, s2) s1##s2
+#define DOCTEST_CAT(s1, s2) DOCTEST_CAT_IMPL(s1, s2)
+#ifdef __COUNTER__ // not standard and may be missing for some compilers
+#define DOCTEST_ANONYMOUS(x) DOCTEST_CAT(x, __COUNTER__)
+#else // __COUNTER__
+#define DOCTEST_ANONYMOUS(x) DOCTEST_CAT(x, __LINE__)
+#endif // __COUNTER__
+
+#ifndef DOCTEST_CONFIG_ASSERTION_PARAMETERS_BY_VALUE
+#define DOCTEST_REF_WRAP(x) x&
+#else // DOCTEST_CONFIG_ASSERTION_PARAMETERS_BY_VALUE
+#define DOCTEST_REF_WRAP(x) x
+#endif // DOCTEST_CONFIG_ASSERTION_PARAMETERS_BY_VALUE
+
+// not using __APPLE__ because... this is how Catch does it
+#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
+#define DOCTEST_PLATFORM_MAC
+#elif defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
+#define DOCTEST_PLATFORM_IPHONE
+#elif defined(_WIN32)
+#define DOCTEST_PLATFORM_WINDOWS
+#elif defined(__wasi__)
+#define DOCTEST_PLATFORM_WASI
+#else // DOCTEST_PLATFORM
+#define DOCTEST_PLATFORM_LINUX
+#endif // DOCTEST_PLATFORM
+
+namespace doctest { namespace detail {
+    static DOCTEST_CONSTEXPR int consume(const int*, int) noexcept { return 0; }
+}}
+
+#define DOCTEST_GLOBAL_NO_WARNINGS(var, ...)                                                         \
+    DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wglobal-constructors")                                \
+    static const int var = doctest::detail::consume(&var, __VA_ARGS__);                              \
+    DOCTEST_CLANG_SUPPRESS_WARNING_POP
+
+#ifndef DOCTEST_BREAK_INTO_DEBUGGER
+// should probably take a look at https://github.com/scottt/debugbreak
+#ifdef DOCTEST_PLATFORM_LINUX
+#if defined(__GNUC__) && (defined(__i386) || defined(__x86_64))
+// Break at the location of the failing check if possible
+#define DOCTEST_BREAK_INTO_DEBUGGER() __asm__("int $3\n" : :) // NOLINT(hicpp-no-assembler)
+#else
+#include <signal.h>
+#define DOCTEST_BREAK_INTO_DEBUGGER() raise(SIGTRAP)
+#endif
+#elif defined(DOCTEST_PLATFORM_MAC)
+#if defined(__x86_64) || defined(__x86_64__) || defined(__amd64__) || defined(__i386)
+#define DOCTEST_BREAK_INTO_DEBUGGER() __asm__("int $3\n" : :) // NOLINT(hicpp-no-assembler)
+#elif defined(__ppc__) || defined(__ppc64__)
+// https://www.cocoawithlove.com/2008/03/break-into-debugger.html
+#define DOCTEST_BREAK_INTO_DEBUGGER() __asm__("li r0, 20\nsc\nnop\nli r0, 37\nli r4, 2\nsc\nnop\n": : : "memory","r0","r3","r4") // NOLINT(hicpp-no-assembler)
+#else
+#define DOCTEST_BREAK_INTO_DEBUGGER() __asm__("brk #0"); // NOLINT(hicpp-no-assembler)
+#endif
+#elif DOCTEST_MSVC
+#define DOCTEST_BREAK_INTO_DEBUGGER() __debugbreak()
+#elif defined(__MINGW32__)
+DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH("-Wredundant-decls")
+extern "C" __declspec(dllimport) void __stdcall DebugBreak();
+DOCTEST_GCC_SUPPRESS_WARNING_POP
+#define DOCTEST_BREAK_INTO_DEBUGGER() ::DebugBreak()
+#else // linux
+#define DOCTEST_BREAK_INTO_DEBUGGER() (static_cast<void>(0))
+#endif // linux
+#endif // DOCTEST_BREAK_INTO_DEBUGGER
+
+// this is kept here for backwards compatibility since the config option was changed
+#ifdef DOCTEST_CONFIG_USE_IOSFWD
+#ifndef DOCTEST_CONFIG_USE_STD_HEADERS
+#define DOCTEST_CONFIG_USE_STD_HEADERS
+#endif
+#endif // DOCTEST_CONFIG_USE_IOSFWD
+
+// for clang - always include ciso646 (which drags some std stuff) because
+// we want to check if we are using libc++ with the _LIBCPP_VERSION macro in
+// which case we don't want to forward declare stuff from std - for reference:
+// https://github.com/doctest/doctest/issues/126
+// https://github.com/doctest/doctest/issues/356
+#if DOCTEST_CLANG
+#include <ciso646>
+#endif // clang
+
+#ifdef _LIBCPP_VERSION
+#ifndef DOCTEST_CONFIG_USE_STD_HEADERS
+#define DOCTEST_CONFIG_USE_STD_HEADERS
+#endif
+#endif // _LIBCPP_VERSION
+
+#ifdef DOCTEST_CONFIG_USE_STD_HEADERS
+#ifndef DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+#define DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+#endif // DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+DOCTEST_MAKE_STD_HEADERS_CLEAN_FROM_WARNINGS_ON_WALL_BEGIN
+#include <cstddef>
+#include <ostream>
+#include <istream>
+DOCTEST_MAKE_STD_HEADERS_CLEAN_FROM_WARNINGS_ON_WALL_END
+#else // DOCTEST_CONFIG_USE_STD_HEADERS
+
+// Forward declaring 'X' in namespace std is not permitted by the C++ Standard.
+DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4643)
+
+namespace std { // NOLINT(cert-dcl58-cpp)
+typedef decltype(nullptr) nullptr_t; // NOLINT(modernize-use-using)
+typedef decltype(sizeof(void*)) size_t; // NOLINT(modernize-use-using)
+template <class charT>
+struct char_traits;
+template <>
+struct char_traits<char>;
+template <class charT, class traits>
+class basic_ostream; // NOLINT(fuchsia-virtual-inheritance)
+typedef basic_ostream<char, char_traits<char>> ostream; // NOLINT(modernize-use-using)
+template<class traits>
+// NOLINTNEXTLINE
+basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, const char*);
+template <class charT, class traits>
+class basic_istream;
+typedef basic_istream<char, char_traits<char>> istream; // NOLINT(modernize-use-using)
+template <class... Types>
+class tuple;
+#if DOCTEST_MSVC >= DOCTEST_COMPILER(19, 20, 0)
+// see this issue on why this is needed: https://github.com/doctest/doctest/issues/183
+template <class Ty>
+class allocator;
+template <class Elem, class Traits, class Alloc>
+class basic_string;
+using string = basic_string<char, char_traits<char>, allocator<char>>;
+#endif // VS 2019
+} // namespace std
+
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+#endif // DOCTEST_CONFIG_USE_STD_HEADERS
+
+#ifdef DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+#include <type_traits>
+#endif // DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+
+namespace doctest {
+
+using std::size_t;
+
+DOCTEST_INTERFACE extern bool is_running_in_test;
+
+#ifndef DOCTEST_CONFIG_STRING_SIZE_TYPE
+#define DOCTEST_CONFIG_STRING_SIZE_TYPE unsigned
+#endif
+
+// A 24 byte string class (can be as small as 17 for x64 and 13 for x86) that can hold strings with length
+// of up to 23 chars on the stack before going on the heap - the last byte of the buffer is used for:
+// - "is small" bit - the highest bit - if "0" then it is small - otherwise its "1" (128)
+// - if small - capacity left before going on the heap - using the lowest 5 bits
+// - if small - 2 bits are left unused - the second and third highest ones
+// - if small - acts as a null terminator if strlen() is 23 (24 including the null terminator)
+//              and the "is small" bit remains "0" ("as well as the capacity left") so its OK
+// Idea taken from this lecture about the string implementation of facebook/folly - fbstring
+// https://www.youtube.com/watch?v=kPR8h4-qZdk
+// TODO:
+// - optimizations - like not deleting memory unnecessarily in operator= and etc.
+// - resize/reserve/clear
+// - replace
+// - back/front
+// - iterator stuff
+// - find & friends
+// - push_back/pop_back
+// - assign/insert/erase
+// - relational operators as free functions - taking const char* as one of the params
+class DOCTEST_INTERFACE String
+{
+public:
+    using size_type = DOCTEST_CONFIG_STRING_SIZE_TYPE;
+
+private:
+    static DOCTEST_CONSTEXPR size_type len  = 24;      //!OCLINT avoid private static members
+    static DOCTEST_CONSTEXPR size_type last = len - 1; //!OCLINT avoid private static members
+
+    struct view // len should be more than sizeof(view) - because of the final byte for flags
+    {
+        char*    ptr;
+        size_type size;
+        size_type capacity;
+    };
+
+    union
+    {
+        char buf[len]; // NOLINT(*-avoid-c-arrays)
+        view data;
+    };
+
+    char* allocate(size_type sz);
+
+    bool isOnStack() const noexcept { return (buf[last] & 128) == 0; }
+    void setOnHeap() noexcept;
+    void setLast(size_type in = last) noexcept;
+    void setSize(size_type sz) noexcept;
+
+    void copy(const String& other);
+
+public:
+    static DOCTEST_CONSTEXPR size_type npos = static_cast<size_type>(-1);
+
+    String() noexcept;
+    ~String();
+
+    // cppcheck-suppress noExplicitConstructor
+    String(const char* in);
+    String(const char* in, size_type in_size);
+
+    String(std::istream& in, size_type in_size);
+
+    String(const String& other);
+    String& operator=(const String& other);
+
+    String& operator+=(const String& other);
+
+    String(String&& other) noexcept;
+    String& operator=(String&& other) noexcept;
+
+    char  operator[](size_type i) const;
+    char& operator[](size_type i);
+
+    // the only functions I'm willing to leave in the interface - available for inlining
+    const char* c_str() const { return const_cast<String*>(this)->c_str(); } // NOLINT
+    char*       c_str() {
+        if (isOnStack()) {
+            return reinterpret_cast<char*>(buf);
+        }
+        return data.ptr;
+    }
+
+    size_type size() const;
+    size_type capacity() const;
+
+    String substr(size_type pos, size_type cnt = npos) &&;
+    String substr(size_type pos, size_type cnt = npos) const &;
+
+    size_type find(char ch, size_type pos = 0) const;
+    size_type rfind(char ch, size_type pos = npos) const;
+
+    int compare(const char* other, bool no_case = false) const;
+    int compare(const String& other, bool no_case = false) const;
+
+friend DOCTEST_INTERFACE std::ostream& operator<<(std::ostream& s, const String& in);
+};
+
+DOCTEST_INTERFACE String operator+(const String& lhs, const String& rhs);
+
+DOCTEST_INTERFACE bool operator==(const String& lhs, const String& rhs);
+DOCTEST_INTERFACE bool operator!=(const String& lhs, const String& rhs);
+DOCTEST_INTERFACE bool operator<(const String& lhs, const String& rhs);
+DOCTEST_INTERFACE bool operator>(const String& lhs, const String& rhs);
+DOCTEST_INTERFACE bool operator<=(const String& lhs, const String& rhs);
+DOCTEST_INTERFACE bool operator>=(const String& lhs, const String& rhs);
+
+class DOCTEST_INTERFACE Contains {
+public:
+    explicit Contains(const String& string);
+
+    bool checkWith(const String& other) const;
+
+    String string;
+};
+
+DOCTEST_INTERFACE String toString(const Contains& in);
+
+DOCTEST_INTERFACE bool operator==(const String& lhs, const Contains& rhs);
+DOCTEST_INTERFACE bool operator==(const Contains& lhs, const String& rhs);
+DOCTEST_INTERFACE bool operator!=(const String& lhs, const Contains& rhs);
+DOCTEST_INTERFACE bool operator!=(const Contains& lhs, const String& rhs);
+
+namespace Color {
+    enum Enum
+    {
+        None = 0,
+        White,
+        Red,
+        Green,
+        Blue,
+        Cyan,
+        Yellow,
+        Grey,
+
+        Bright = 0x10,
+
+        BrightRed   = Bright | Red,
+        BrightGreen = Bright | Green,
+        LightGrey   = Bright | Grey,
+        BrightWhite = Bright | White
+    };
+
+    DOCTEST_INTERFACE std::ostream& operator<<(std::ostream& s, Color::Enum code);
+} // namespace Color
+
+namespace assertType {
+    enum Enum
+    {
+        // macro traits
+
+        is_warn    = 1,
+        is_check   = 2 * is_warn,
+        is_require = 2 * is_check,
+
+        is_normal      = 2 * is_require,
+        is_throws      = 2 * is_normal,
+        is_throws_as   = 2 * is_throws,
+        is_throws_with = 2 * is_throws_as,
+        is_nothrow     = 2 * is_throws_with,
+
+        is_false = 2 * is_nothrow,
+        is_unary = 2 * is_false, // not checked anywhere - used just to distinguish the types
+
+        is_eq = 2 * is_unary,
+        is_ne = 2 * is_eq,
+
+        is_lt = 2 * is_ne,
+        is_gt = 2 * is_lt,
+
+        is_ge = 2 * is_gt,
+        is_le = 2 * is_ge,
+
+        // macro types
+
+        DT_WARN    = is_normal | is_warn,
+        DT_CHECK   = is_normal | is_check,
+        DT_REQUIRE = is_normal | is_require,
+
+        DT_WARN_FALSE    = is_normal | is_false | is_warn,
+        DT_CHECK_FALSE   = is_normal | is_false | is_check,
+        DT_REQUIRE_FALSE = is_normal | is_false | is_require,
+
+        DT_WARN_THROWS    = is_throws | is_warn,
+        DT_CHECK_THROWS   = is_throws | is_check,
+        DT_REQUIRE_THROWS = is_throws | is_require,
+
+        DT_WARN_THROWS_AS    = is_throws_as | is_warn,
+        DT_CHECK_THROWS_AS   = is_throws_as | is_check,
+        DT_REQUIRE_THROWS_AS = is_throws_as | is_require,
+
+        DT_WARN_THROWS_WITH    = is_throws_with | is_warn,
+        DT_CHECK_THROWS_WITH   = is_throws_with | is_check,
+        DT_REQUIRE_THROWS_WITH = is_throws_with | is_require,
+
+        DT_WARN_THROWS_WITH_AS    = is_throws_with | is_throws_as | is_warn,
+        DT_CHECK_THROWS_WITH_AS   = is_throws_with | is_throws_as | is_check,
+        DT_REQUIRE_THROWS_WITH_AS = is_throws_with | is_throws_as | is_require,
+
+        DT_WARN_NOTHROW    = is_nothrow | is_warn,
+        DT_CHECK_NOTHROW   = is_nothrow | is_check,
+        DT_REQUIRE_NOTHROW = is_nothrow | is_require,
+
+        DT_WARN_EQ    = is_normal | is_eq | is_warn,
+        DT_CHECK_EQ   = is_normal | is_eq | is_check,
+        DT_REQUIRE_EQ = is_normal | is_eq | is_require,
+
+        DT_WARN_NE    = is_normal | is_ne | is_warn,
+        DT_CHECK_NE   = is_normal | is_ne | is_check,
+        DT_REQUIRE_NE = is_normal | is_ne | is_require,
+
+        DT_WARN_GT    = is_normal | is_gt | is_warn,
+        DT_CHECK_GT   = is_normal | is_gt | is_check,
+        DT_REQUIRE_GT = is_normal | is_gt | is_require,
+
+        DT_WARN_LT    = is_normal | is_lt | is_warn,
+        DT_CHECK_LT   = is_normal | is_lt | is_check,
+        DT_REQUIRE_LT = is_normal | is_lt | is_require,
+
+        DT_WARN_GE    = is_normal | is_ge | is_warn,
+        DT_CHECK_GE   = is_normal | is_ge | is_check,
+        DT_REQUIRE_GE = is_normal | is_ge | is_require,
+
+        DT_WARN_LE    = is_normal | is_le | is_warn,
+        DT_CHECK_LE   = is_normal | is_le | is_check,
+        DT_REQUIRE_LE = is_normal | is_le | is_require,
+
+        DT_WARN_UNARY    = is_normal | is_unary | is_warn,
+        DT_CHECK_UNARY   = is_normal | is_unary | is_check,
+        DT_REQUIRE_UNARY = is_normal | is_unary | is_require,
+
+        DT_WARN_UNARY_FALSE    = is_normal | is_false | is_unary | is_warn,
+        DT_CHECK_UNARY_FALSE   = is_normal | is_false | is_unary | is_check,
+        DT_REQUIRE_UNARY_FALSE = is_normal | is_false | is_unary | is_require,
+    };
+} // namespace assertType
+
+DOCTEST_INTERFACE const char* assertString(assertType::Enum at);
+DOCTEST_INTERFACE const char* failureString(assertType::Enum at);
+DOCTEST_INTERFACE const char* skipPathFromFilename(const char* file);
+
+struct DOCTEST_INTERFACE TestCaseData
+{
+    String      m_file;       // the file in which the test was registered (using String - see #350)
+    unsigned    m_line;       // the line where the test was registered
+    const char* m_name;       // name of the test case
+    const char* m_test_suite; // the test suite in which the test was added
+    const char* m_description;
+    bool        m_skip;
+    bool        m_no_breaks;
+    bool        m_no_output;
+    bool        m_may_fail;
+    bool        m_should_fail;
+    int         m_expected_failures;
+    double      m_timeout;
+};
+
+struct DOCTEST_INTERFACE AssertData
+{
+    // common - for all asserts
+    const TestCaseData* m_test_case;
+    assertType::Enum    m_at;
+    const char*         m_file;
+    int                 m_line;
+    const char*         m_expr;
+    bool                m_failed;
+
+    // exception-related - for all asserts
+    bool   m_threw;
+    String m_exception;
+
+    // for normal asserts
+    String m_decomp;
+
+    // for specific exception-related asserts
+    bool           m_threw_as;
+    const char*    m_exception_type;
+
+    class DOCTEST_INTERFACE StringContains {
+        private:
+            Contains content;
+            bool isContains;
+
+        public:
+            StringContains(const String& str) : content(str), isContains(false) { }
+            StringContains(Contains cntn) : content(static_cast<Contains&&>(cntn)), isContains(true) { }
+
+            bool check(const String& str) { return isContains ? (content == str) : (content.string == str); }
+
+            operator const String&() const { return content.string; }
+
+            const char* c_str() const { return content.string.c_str(); }
+    } m_exception_string;
+
+    AssertData(assertType::Enum at, const char* file, int line, const char* expr,
+        const char* exception_type, const StringContains& exception_string);
+};
+
+struct DOCTEST_INTERFACE MessageData
+{
+    String           m_string;
+    const char*      m_file;
+    int              m_line;
+    assertType::Enum m_severity;
+};
+
+struct DOCTEST_INTERFACE SubcaseSignature
+{
+    String      m_name;
+    const char* m_file;
+    int         m_line;
+
+    bool operator==(const SubcaseSignature& other) const;
+    bool operator<(const SubcaseSignature& other) const;
+};
+
+struct DOCTEST_INTERFACE IContextScope
+{
+    DOCTEST_DECLARE_INTERFACE(IContextScope)
+    virtual void stringify(std::ostream*) const = 0;
+};
+
+namespace detail {
+    struct DOCTEST_INTERFACE TestCase;
+} // namespace detail
+
+struct ContextOptions //!OCLINT too many fields
+{
+    std::ostream* cout = nullptr; // stdout stream
+    String        binary_name;    // the test binary name
+
+    const detail::TestCase* currentTest = nullptr;
+
+    // == parameters from the command line
+    String   out;       // output filename
+    String   order_by;  // how tests should be ordered
+    unsigned rand_seed; // the seed for rand ordering
+
+    unsigned first; // the first (matching) test to be executed
+    unsigned last;  // the last (matching) test to be executed
+
+    int abort_after;           // stop tests after this many failed assertions
+    int subcase_filter_levels; // apply the subcase filters for the first N levels
+
+    bool success;              // include successful assertions in output
+    bool case_sensitive;       // if filtering should be case sensitive
+    bool exit;                 // if the program should be exited after the tests are ran/whatever
+    bool duration;             // print the time duration of each test case
+    bool minimal;              // minimal console output (only test failures)
+    bool quiet;                // no console output
+    bool no_throw;             // to skip exceptions-related assertion macros
+    bool no_exitcode;          // if the framework should return 0 as the exitcode
+    bool no_run;               // to not run the tests at all (can be done with an "*" exclude)
+    bool no_intro;             // to not print the intro of the framework
+    bool no_version;           // to not print the version of the framework
+    bool no_colors;            // if output to the console should be colorized
+    bool force_colors;         // forces the use of colors even when a tty cannot be detected
+    bool no_breaks;            // to not break into the debugger
+    bool no_skip;              // don't skip test cases which are marked to be skipped
+    bool gnu_file_line;        // if line numbers should be surrounded with :x: and not (x):
+    bool no_path_in_filenames; // if the path to files should be removed from the output
+    bool no_line_numbers;      // if source code line numbers should be omitted from the output
+    bool no_debug_output;      // no output in the debug console when a debugger is attached
+    bool no_skipped_summary;   // don't print "skipped" in the summary !!! UNDOCUMENTED !!!
+    bool no_time_in_output;    // omit any time/timestamps from output !!! UNDOCUMENTED !!!
+
+    bool help;             // to print the help
+    bool version;          // to print the version
+    bool count;            // if only the count of matching tests is to be retrieved
+    bool list_test_cases;  // to list all tests matching the filters
+    bool list_test_suites; // to list all suites matching the filters
+    bool list_reporters;   // lists all registered reporters
+};
+
+namespace detail {
+    namespace types {
+#ifdef DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+        using namespace std;
+#else
+        template <bool COND, typename T = void>
+        struct enable_if { };
+
+        template <typename T>
+        struct enable_if<true, T> { using type = T; };
+
+        struct true_type { static DOCTEST_CONSTEXPR bool value = true; };
+        struct false_type { static DOCTEST_CONSTEXPR bool value = false; };
+
+        template <typename T> struct remove_reference { using type = T; };
+        template <typename T> struct remove_reference<T&> { using type = T; };
+        template <typename T> struct remove_reference<T&&> { using type = T; };
+
+        template <typename T> struct is_rvalue_reference : false_type { };
+        template <typename T> struct is_rvalue_reference<T&&> : true_type { };
+
+        template<typename T> struct remove_const { using type = T; };
+        template <typename T> struct remove_const<const T> { using type = T; };
+
+        // Compiler intrinsics
+        template <typename T> struct is_enum { static DOCTEST_CONSTEXPR bool value = __is_enum(T); };
+        template <typename T> struct underlying_type { using type = __underlying_type(T); };
+
+        template <typename T> struct is_pointer : false_type { };
+        template <typename T> struct is_pointer<T*> : true_type { };
+
+        template <typename T> struct is_array : false_type { };
+        // NOLINTNEXTLINE(*-avoid-c-arrays)
+        template <typename T, size_t SIZE> struct is_array<T[SIZE]> : true_type { };
+#endif
+    }
+
+    // <utility>
+    template <typename T>
+    T&& declval();
+
+    template <class T>
+    DOCTEST_CONSTEXPR_FUNC T&& forward(typename types::remove_reference<T>::type& t) DOCTEST_NOEXCEPT {
+        return static_cast<T&&>(t);
+    }
+
+    template <class T>
+    DOCTEST_CONSTEXPR_FUNC T&& forward(typename types::remove_reference<T>::type&& t) DOCTEST_NOEXCEPT {
+        return static_cast<T&&>(t);
+    }
+
+    template <typename T>
+    struct deferred_false : types::false_type { };
+
+// MSVS 2015 :(
+#if !DOCTEST_CLANG && defined(_MSC_VER) && _MSC_VER <= 1900
+    template <typename T, typename = void>
+    struct has_global_insertion_operator : types::false_type { };
+
+    template <typename T>
+    struct has_global_insertion_operator<T, decltype(::operator<<(declval<std::ostream&>(), declval<const T&>()), void())> : types::true_type { };
+
+    template <typename T, typename = void>
+    struct has_insertion_operator { static DOCTEST_CONSTEXPR bool value = has_global_insertion_operator<T>::value; };
+
+    template <typename T, bool global>
+    struct insert_hack;
+
+    template <typename T>
+    struct insert_hack<T, true> {
+        static void insert(std::ostream& os, const T& t) { ::operator<<(os, t); }
+    };
+
+    template <typename T>
+    struct insert_hack<T, false> {
+        static void insert(std::ostream& os, const T& t) { operator<<(os, t); }
+    };
+
+    template <typename T>
+    using insert_hack_t = insert_hack<T, has_global_insertion_operator<T>::value>;
+#else
+    template <typename T, typename = void>
+    struct has_insertion_operator : types::false_type { };
+#endif
+
+    template <typename T>
+    struct has_insertion_operator<T, decltype(operator<<(declval<std::ostream&>(), declval<const T&>()), void())> : types::true_type { };
+
+    template <typename T>
+    struct should_stringify_as_underlying_type {
+        static DOCTEST_CONSTEXPR bool value = detail::types::is_enum<T>::value && !doctest::detail::has_insertion_operator<T>::value;
+    };
+
+    DOCTEST_INTERFACE std::ostream* tlssPush();
+    DOCTEST_INTERFACE String tlssPop();
+
+    template <bool C>
+    struct StringMakerBase {
+        template <typename T>
+        static String convert(const DOCTEST_REF_WRAP(T)) {
+#ifdef DOCTEST_CONFIG_REQUIRE_STRINGIFICATION_FOR_ALL_USED_TYPES
+            static_assert(deferred_false<T>::value, "No stringification detected for type T. See string conversion manual");
+#endif
+            return "{?}";
+        }
+    };
+
+    template <typename T>
+    struct filldata;
+
+    template <typename T>
+    void filloss(std::ostream* stream, const T& in) {
+        filldata<T>::fill(stream, in);
+    }
+
+    template <typename T, size_t N>
+    void filloss(std::ostream* stream, const T (&in)[N]) { // NOLINT(*-avoid-c-arrays)
+        // T[N], T(&)[N], T(&&)[N] have same behaviour.
+        // Hence remove reference.
+        filloss<typename types::remove_reference<decltype(in)>::type>(stream, in);
+    }
+
+    template <typename T>
+    String toStream(const T& in) {
+        std::ostream* stream = tlssPush();
+        filloss(stream, in);
+        return tlssPop();
+    }
+
+    template <>
+    struct StringMakerBase<true> {
+        template <typename T>
+        static String convert(const DOCTEST_REF_WRAP(T) in) {
+            return toStream(in);
+        }
+    };
+} // namespace detail
+
+template <typename T>
+struct StringMaker : public detail::StringMakerBase<
+    detail::has_insertion_operator<T>::value || detail::types::is_pointer<T>::value || detail::types::is_array<T>::value>
+{};
+
+#ifndef DOCTEST_STRINGIFY
+#ifdef DOCTEST_CONFIG_DOUBLE_STRINGIFY
+#define DOCTEST_STRINGIFY(...) toString(toString(__VA_ARGS__))
+#else
+#define DOCTEST_STRINGIFY(...) toString(__VA_ARGS__)
+#endif
+#endif
+
+template <typename T>
+String toString() {
+#if DOCTEST_CLANG == 0 && DOCTEST_GCC == 0 && DOCTEST_ICC == 0
+    String ret = __FUNCSIG__; // class doctest::String __cdecl doctest::toString<TYPE>(void)
+    String::size_type beginPos = ret.find('<');
+    return ret.substr(beginPos + 1, ret.size() - beginPos - static_cast<String::size_type>(sizeof(">(void)")));
+#else
+    String ret = __PRETTY_FUNCTION__; // doctest::String toString() [with T = TYPE]
+    String::size_type begin = ret.find('=') + 2;
+    return ret.substr(begin, ret.size() - begin - 1);
+#endif
+}
+
+template <typename T, typename detail::types::enable_if<!detail::should_stringify_as_underlying_type<T>::value, bool>::type = true>
+String toString(const DOCTEST_REF_WRAP(T) value) {
+    return StringMaker<T>::convert(value);
+}
+
+#ifdef DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+DOCTEST_INTERFACE String toString(const char* in);
+#endif // DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+
+#if DOCTEST_MSVC >= DOCTEST_COMPILER(19, 20, 0)
+// see this issue on why this is needed: https://github.com/doctest/doctest/issues/183
+DOCTEST_INTERFACE String toString(const std::string& in);
+#endif // VS 2019
+
+DOCTEST_INTERFACE String toString(String in);
+
+DOCTEST_INTERFACE String toString(std::nullptr_t);
+
+DOCTEST_INTERFACE String toString(bool in);
+
+DOCTEST_INTERFACE String toString(float in);
+DOCTEST_INTERFACE String toString(double in);
+DOCTEST_INTERFACE String toString(double long in);
+
+DOCTEST_INTERFACE String toString(char in);
+DOCTEST_INTERFACE String toString(char signed in);
+DOCTEST_INTERFACE String toString(char unsigned in);
+DOCTEST_INTERFACE String toString(short in);
+DOCTEST_INTERFACE String toString(short unsigned in);
+DOCTEST_INTERFACE String toString(signed in);
+DOCTEST_INTERFACE String toString(unsigned in);
+DOCTEST_INTERFACE String toString(long in);
+DOCTEST_INTERFACE String toString(long unsigned in);
+DOCTEST_INTERFACE String toString(long long in);
+DOCTEST_INTERFACE String toString(long long unsigned in);
+
+template <typename T, typename detail::types::enable_if<detail::should_stringify_as_underlying_type<T>::value, bool>::type = true>
+String toString(const DOCTEST_REF_WRAP(T) value) {
+    using UT = typename detail::types::underlying_type<T>::type;
+    return (DOCTEST_STRINGIFY(static_cast<UT>(value)));
+}
+
+namespace detail {
+    template <typename T>
+    struct filldata
+    {
+        static void fill(std::ostream* stream, const T& in) {
+#if defined(_MSC_VER) && _MSC_VER <= 1900
+        insert_hack_t<T>::insert(*stream, in);
+#else
+        operator<<(*stream, in);
+#endif
+        }
+    };
+
+DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4866)
+// NOLINTBEGIN(*-avoid-c-arrays)
+    template <typename T, size_t N>
+    struct filldata<T[N]> {
+        static void fill(std::ostream* stream, const T(&in)[N]) {
+            *stream << "[";
+            for (size_t i = 0; i < N; i++) {
+                if (i != 0) { *stream << ", "; }
+                *stream << (DOCTEST_STRINGIFY(in[i]));
+            }
+            *stream << "]";
+        }
+    };
+// NOLINTEND(*-avoid-c-arrays)
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+    // Specialized since we don't want the terminating null byte!
+// NOLINTBEGIN(*-avoid-c-arrays)
+    template <size_t N>
+    struct filldata<const char[N]> {
+        static void fill(std::ostream* stream, const char (&in)[N]) {
+            *stream << String(in, in[N - 1] ? N : N - 1);
+        } // NOLINT(clang-analyzer-cplusplus.NewDeleteLeaks)
+    };
+// NOLINTEND(*-avoid-c-arrays)
+
+    template <>
+    struct filldata<const void*> {
+        static void fill(std::ostream* stream, const void* in);
+    };
+
+    template <typename T>
+    struct filldata<T*> {
+DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4180)
+        static void fill(std::ostream* stream, const T* in) {
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wmicrosoft-cast")
+            filldata<const void*>::fill(stream,
+#if DOCTEST_GCC == 0 || DOCTEST_GCC >= DOCTEST_COMPILER(4, 9, 0)
+                reinterpret_cast<const void*>(in)
+#else
+                *reinterpret_cast<const void* const*>(&in)
+#endif
+            );
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
+        }
+    };
+}
+
+struct DOCTEST_INTERFACE Approx
+{
+    Approx(double value);
+
+    Approx operator()(double value) const;
+
+#ifdef DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+    template <typename T>
+    explicit Approx(const T& value,
+                    typename detail::types::enable_if<std::is_constructible<double, T>::value>::type* =
+                            static_cast<T*>(nullptr)) {
+        *this = static_cast<double>(value);
+    }
+#endif // DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+
+    Approx& epsilon(double newEpsilon);
+
+#ifdef DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+    template <typename T>
+    typename std::enable_if<std::is_constructible<double, T>::value, Approx&>::type epsilon(
+            const T& newEpsilon) {
+        m_epsilon = static_cast<double>(newEpsilon);
+        return *this;
+    }
+#endif //  DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+
+    Approx& scale(double newScale);
+
+#ifdef DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+    template <typename T>
+    typename std::enable_if<std::is_constructible<double, T>::value, Approx&>::type scale(
+            const T& newScale) {
+        m_scale = static_cast<double>(newScale);
+        return *this;
+    }
+#endif // DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+
+    // clang-format off
+    DOCTEST_INTERFACE friend bool operator==(double lhs, const Approx & rhs);
+    DOCTEST_INTERFACE friend bool operator==(const Approx & lhs, double rhs);
+    DOCTEST_INTERFACE friend bool operator!=(double lhs, const Approx & rhs);
+    DOCTEST_INTERFACE friend bool operator!=(const Approx & lhs, double rhs);
+    DOCTEST_INTERFACE friend bool operator<=(double lhs, const Approx & rhs);
+    DOCTEST_INTERFACE friend bool operator<=(const Approx & lhs, double rhs);
+    DOCTEST_INTERFACE friend bool operator>=(double lhs, const Approx & rhs);
+    DOCTEST_INTERFACE friend bool operator>=(const Approx & lhs, double rhs);
+    DOCTEST_INTERFACE friend bool operator< (double lhs, const Approx & rhs);
+    DOCTEST_INTERFACE friend bool operator< (const Approx & lhs, double rhs);
+    DOCTEST_INTERFACE friend bool operator> (double lhs, const Approx & rhs);
+    DOCTEST_INTERFACE friend bool operator> (const Approx & lhs, double rhs);
+
+#ifdef DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+#define DOCTEST_APPROX_PREFIX \
+    template <typename T> friend typename std::enable_if<std::is_constructible<double, T>::value, bool>::type
+
+    DOCTEST_APPROX_PREFIX operator==(const T& lhs, const Approx& rhs) { return operator==(static_cast<double>(lhs), rhs); }
+    DOCTEST_APPROX_PREFIX operator==(const Approx& lhs, const T& rhs) { return operator==(rhs, lhs); }
+    DOCTEST_APPROX_PREFIX operator!=(const T& lhs, const Approx& rhs) { return !operator==(lhs, rhs); }
+    DOCTEST_APPROX_PREFIX operator!=(const Approx& lhs, const T& rhs) { return !operator==(rhs, lhs); }
+    DOCTEST_APPROX_PREFIX operator<=(const T& lhs, const Approx& rhs) { return static_cast<double>(lhs) < rhs.m_value || lhs == rhs; }
+    DOCTEST_APPROX_PREFIX operator<=(const Approx& lhs, const T& rhs) { return lhs.m_value < static_cast<double>(rhs) || lhs == rhs; }
+    DOCTEST_APPROX_PREFIX operator>=(const T& lhs, const Approx& rhs) { return static_cast<double>(lhs) > rhs.m_value || lhs == rhs; }
+    DOCTEST_APPROX_PREFIX operator>=(const Approx& lhs, const T& rhs) { return lhs.m_value > static_cast<double>(rhs) || lhs == rhs; }
+    DOCTEST_APPROX_PREFIX operator< (const T& lhs, const Approx& rhs) { return static_cast<double>(lhs) < rhs.m_value && lhs != rhs; }
+    DOCTEST_APPROX_PREFIX operator< (const Approx& lhs, const T& rhs) { return lhs.m_value < static_cast<double>(rhs) && lhs != rhs; }
+    DOCTEST_APPROX_PREFIX operator> (const T& lhs, const Approx& rhs) { return static_cast<double>(lhs) > rhs.m_value && lhs != rhs; }
+    DOCTEST_APPROX_PREFIX operator> (const Approx& lhs, const T& rhs) { return lhs.m_value > static_cast<double>(rhs) && lhs != rhs; }
+#undef DOCTEST_APPROX_PREFIX
+#endif // DOCTEST_CONFIG_INCLUDE_TYPE_TRAITS
+
+    // clang-format on
+
+    double m_epsilon;
+    double m_scale;
+    double m_value;
+};
+
+DOCTEST_INTERFACE String toString(const Approx& in);
+
+DOCTEST_INTERFACE const ContextOptions* getContextOptions();
+
+template <typename F>
+struct DOCTEST_INTERFACE_DECL IsNaN
+{
+    F value; bool flipped;
+    IsNaN(F f, bool flip = false) : value(f), flipped(flip) { }
+    IsNaN<F> operator!() const { return { value, !flipped }; }
+    operator bool() const;
+};
+#ifndef __MINGW32__
+extern template struct DOCTEST_INTERFACE_DECL IsNaN<float>;
+extern template struct DOCTEST_INTERFACE_DECL IsNaN<double>;
+extern template struct DOCTEST_INTERFACE_DECL IsNaN<long double>;
+#endif
+DOCTEST_INTERFACE String toString(IsNaN<float> in);
+DOCTEST_INTERFACE String toString(IsNaN<double> in);
+DOCTEST_INTERFACE String toString(IsNaN<double long> in);
+
+#ifndef DOCTEST_CONFIG_DISABLE
+
+namespace detail {
+    // clang-format off
+#ifdef DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+    template<class T>               struct decay_array       { using type = T; };
+    template<class T, unsigned N>   struct decay_array<T[N]> { using type = T*; };
+    template<class T>               struct decay_array<T[]>  { using type = T*; };
+
+    template<class T>   struct not_char_pointer              { static DOCTEST_CONSTEXPR int value = 1; };
+    template<>          struct not_char_pointer<char*>       { static DOCTEST_CONSTEXPR int value = 0; };
+    template<>          struct not_char_pointer<const char*> { static DOCTEST_CONSTEXPR int value = 0; };
+
+    template<class T> struct can_use_op : public not_char_pointer<typename decay_array<T>::type> {};
+#endif // DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+    // clang-format on
+
+    struct DOCTEST_INTERFACE TestFailureException
+    {
+    };
+
+    DOCTEST_INTERFACE bool checkIfShouldThrow(assertType::Enum at);
+
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+    DOCTEST_NORETURN
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+    DOCTEST_INTERFACE void throwException();
+
+    struct DOCTEST_INTERFACE Subcase
+    {
+        SubcaseSignature m_signature;
+        bool             m_entered = false;
+
+        Subcase(const String& name, const char* file, int line);
+        Subcase(const Subcase&) = delete;
+        Subcase(Subcase&&) = delete;
+        Subcase& operator=(const Subcase&) = delete;
+        Subcase& operator=(Subcase&&) = delete;
+        ~Subcase();
+
+        operator bool() const;
+
+        private:
+            bool checkFilters();
+    };
+
+    template <typename L, typename R>
+    String stringifyBinaryExpr(const DOCTEST_REF_WRAP(L) lhs, const char* op,
+                               const DOCTEST_REF_WRAP(R) rhs) {
+        return (DOCTEST_STRINGIFY(lhs)) + op + (DOCTEST_STRINGIFY(rhs));
+    }
+
+#if DOCTEST_CLANG && DOCTEST_CLANG < DOCTEST_COMPILER(3, 6, 0)
+DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wunused-comparison")
+#endif
+
+// This will check if there is any way it could find a operator like member or friend and uses it.
+// If not it doesn't find the operator or if the operator at global scope is defined after
+// this template, the template won't be instantiated due to SFINAE. Once the template is not
+// instantiated it can look for global operator using normal conversions.
+#ifdef __NVCC__
+#define SFINAE_OP(ret,op) ret
+#else
+#define SFINAE_OP(ret,op) decltype((void)(doctest::detail::declval<L>() op doctest::detail::declval<R>()),ret{})
+#endif
+
+#define DOCTEST_DO_BINARY_EXPRESSION_COMPARISON(op, op_str, op_macro)                              \
+    template <typename R>                                                                          \
+    DOCTEST_NOINLINE SFINAE_OP(Result,op) operator op(R&& rhs) {                                   \
+    bool res = op_macro(doctest::detail::forward<const L>(lhs), doctest::detail::forward<R>(rhs)); \
+        if(m_at & assertType::is_false)                                                            \
+            res = !res;                                                                            \
+        if(!res || doctest::getContextOptions()->success)                                          \
+            return Result(res, stringifyBinaryExpr(lhs, op_str, rhs));                             \
+        return Result(res);                                                                        \
+    }
+
+    // more checks could be added - like in Catch:
+    // https://github.com/catchorg/Catch2/pull/1480/files
+    // https://github.com/catchorg/Catch2/pull/1481/files
+#define DOCTEST_FORBIT_EXPRESSION(rt, op)                                                          \
+    template <typename R>                                                                          \
+    rt& operator op(const R&) {                                                                    \
+        static_assert(deferred_false<R>::value,                                                    \
+                      "Expression Too Complex Please Rewrite As Binary Comparison!");              \
+        return *this;                                                                              \
+    }
+
+    struct DOCTEST_INTERFACE Result // NOLINT(*-member-init)
+    {
+        bool   m_passed;
+        String m_decomp;
+
+        Result() = default; // TODO: Why do we need this? (To remove NOLINT)
+        Result(bool passed, const String& decomposition = String());
+
+        // forbidding some expressions based on this table: https://en.cppreference.com/w/cpp/language/operator_precedence
+        DOCTEST_FORBIT_EXPRESSION(Result, &)
+        DOCTEST_FORBIT_EXPRESSION(Result, ^)
+        DOCTEST_FORBIT_EXPRESSION(Result, |)
+        DOCTEST_FORBIT_EXPRESSION(Result, &&)
+        DOCTEST_FORBIT_EXPRESSION(Result, ||)
+        DOCTEST_FORBIT_EXPRESSION(Result, ==)
+        DOCTEST_FORBIT_EXPRESSION(Result, !=)
+        DOCTEST_FORBIT_EXPRESSION(Result, <)
+        DOCTEST_FORBIT_EXPRESSION(Result, >)
+        DOCTEST_FORBIT_EXPRESSION(Result, <=)
+        DOCTEST_FORBIT_EXPRESSION(Result, >=)
+        DOCTEST_FORBIT_EXPRESSION(Result, =)
+        DOCTEST_FORBIT_EXPRESSION(Result, +=)
+        DOCTEST_FORBIT_EXPRESSION(Result, -=)
+        DOCTEST_FORBIT_EXPRESSION(Result, *=)
+        DOCTEST_FORBIT_EXPRESSION(Result, /=)
+        DOCTEST_FORBIT_EXPRESSION(Result, %=)
+        DOCTEST_FORBIT_EXPRESSION(Result, <<=)
+        DOCTEST_FORBIT_EXPRESSION(Result, >>=)
+        DOCTEST_FORBIT_EXPRESSION(Result, &=)
+        DOCTEST_FORBIT_EXPRESSION(Result, ^=)
+        DOCTEST_FORBIT_EXPRESSION(Result, |=)
+    };
+
+#ifndef DOCTEST_CONFIG_NO_COMPARISON_WARNING_SUPPRESSION
+
+    DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+    DOCTEST_CLANG_SUPPRESS_WARNING("-Wsign-conversion")
+    DOCTEST_CLANG_SUPPRESS_WARNING("-Wsign-compare")
+    //DOCTEST_CLANG_SUPPRESS_WARNING("-Wdouble-promotion")
+    //DOCTEST_CLANG_SUPPRESS_WARNING("-Wconversion")
+    //DOCTEST_CLANG_SUPPRESS_WARNING("-Wfloat-equal")
+
+    DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wsign-conversion")
+    DOCTEST_GCC_SUPPRESS_WARNING("-Wsign-compare")
+    //DOCTEST_GCC_SUPPRESS_WARNING("-Wdouble-promotion")
+    //DOCTEST_GCC_SUPPRESS_WARNING("-Wconversion")
+    //DOCTEST_GCC_SUPPRESS_WARNING("-Wfloat-equal")
+
+    DOCTEST_MSVC_SUPPRESS_WARNING_PUSH
+    // https://stackoverflow.com/questions/39479163 what's the difference between 4018 and 4389
+    DOCTEST_MSVC_SUPPRESS_WARNING(4388) // signed/unsigned mismatch
+    DOCTEST_MSVC_SUPPRESS_WARNING(4389) // 'operator' : signed/unsigned mismatch
+    DOCTEST_MSVC_SUPPRESS_WARNING(4018) // 'expression' : signed/unsigned mismatch
+    //DOCTEST_MSVC_SUPPRESS_WARNING(4805) // 'operation' : unsafe mix of type 'type' and type 'type' in operation
+
+#endif // DOCTEST_CONFIG_NO_COMPARISON_WARNING_SUPPRESSION
+
+    // clang-format off
+#ifndef DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+#define DOCTEST_COMPARISON_RETURN_TYPE bool
+#else // DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+#define DOCTEST_COMPARISON_RETURN_TYPE typename types::enable_if<can_use_op<L>::value || can_use_op<R>::value, bool>::type
+    inline bool eq(const char* lhs, const char* rhs) { return String(lhs) == String(rhs); }
+    inline bool ne(const char* lhs, const char* rhs) { return String(lhs) != String(rhs); }
+    inline bool lt(const char* lhs, const char* rhs) { return String(lhs) <  String(rhs); }
+    inline bool gt(const char* lhs, const char* rhs) { return String(lhs) >  String(rhs); }
+    inline bool le(const char* lhs, const char* rhs) { return String(lhs) <= String(rhs); }
+    inline bool ge(const char* lhs, const char* rhs) { return String(lhs) >= String(rhs); }
+#endif // DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+    // clang-format on
+
+#define DOCTEST_RELATIONAL_OP(name, op)                                                            \
+    template <typename L, typename R>                                                              \
+    DOCTEST_COMPARISON_RETURN_TYPE name(const DOCTEST_REF_WRAP(L) lhs,                             \
+                                        const DOCTEST_REF_WRAP(R) rhs) {                           \
+        return lhs op rhs;                                                                         \
+    }
+
+    DOCTEST_RELATIONAL_OP(eq, ==)
+    DOCTEST_RELATIONAL_OP(ne, !=)
+    DOCTEST_RELATIONAL_OP(lt, <)
+    DOCTEST_RELATIONAL_OP(gt, >)
+    DOCTEST_RELATIONAL_OP(le, <=)
+    DOCTEST_RELATIONAL_OP(ge, >=)
+
+#ifndef DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+#define DOCTEST_CMP_EQ(l, r) l == r
+#define DOCTEST_CMP_NE(l, r) l != r
+#define DOCTEST_CMP_GT(l, r) l > r
+#define DOCTEST_CMP_LT(l, r) l < r
+#define DOCTEST_CMP_GE(l, r) l >= r
+#define DOCTEST_CMP_LE(l, r) l <= r
+#else // DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+#define DOCTEST_CMP_EQ(l, r) eq(l, r)
+#define DOCTEST_CMP_NE(l, r) ne(l, r)
+#define DOCTEST_CMP_GT(l, r) gt(l, r)
+#define DOCTEST_CMP_LT(l, r) lt(l, r)
+#define DOCTEST_CMP_GE(l, r) ge(l, r)
+#define DOCTEST_CMP_LE(l, r) le(l, r)
+#endif // DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+
+    template <typename L>
+    // cppcheck-suppress copyCtorAndEqOperator
+    struct Expression_lhs
+    {
+        L                lhs;
+        assertType::Enum m_at;
+
+        explicit Expression_lhs(L&& in, assertType::Enum at)
+                : lhs(static_cast<L&&>(in))
+                , m_at(at) {}
+
+        DOCTEST_NOINLINE operator Result() {
+// this is needed only for MSVC 2015
+DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4800) // 'int': forcing value to bool
+            bool res = static_cast<bool>(lhs);
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+            if(m_at & assertType::is_false) { //!OCLINT bitwise operator in conditional
+                res = !res;
+            }
+
+            if(!res || getContextOptions()->success) {
+                return { res, (DOCTEST_STRINGIFY(lhs)) };
+            }
+            return { res };
+        }
+
+        /* This is required for user-defined conversions from Expression_lhs to L */
+        operator L() const { return lhs; }
+
+        // clang-format off
+        DOCTEST_DO_BINARY_EXPRESSION_COMPARISON(==, " == ", DOCTEST_CMP_EQ) //!OCLINT bitwise operator in conditional
+        DOCTEST_DO_BINARY_EXPRESSION_COMPARISON(!=, " != ", DOCTEST_CMP_NE) //!OCLINT bitwise operator in conditional
+        DOCTEST_DO_BINARY_EXPRESSION_COMPARISON(>,  " >  ", DOCTEST_CMP_GT) //!OCLINT bitwise operator in conditional
+        DOCTEST_DO_BINARY_EXPRESSION_COMPARISON(<,  " <  ", DOCTEST_CMP_LT) //!OCLINT bitwise operator in conditional
+        DOCTEST_DO_BINARY_EXPRESSION_COMPARISON(>=, " >= ", DOCTEST_CMP_GE) //!OCLINT bitwise operator in conditional
+        DOCTEST_DO_BINARY_EXPRESSION_COMPARISON(<=, " <= ", DOCTEST_CMP_LE) //!OCLINT bitwise operator in conditional
+        // clang-format on
+
+        // forbidding some expressions based on this table: https://en.cppreference.com/w/cpp/language/operator_precedence
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, &)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, ^)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, |)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, &&)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, ||)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, =)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, +=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, -=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, *=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, /=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, %=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, <<=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, >>=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, &=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, ^=)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, |=)
+        // these 2 are unfortunate because they should be allowed - they have higher precedence over the comparisons, but the
+        // ExpressionDecomposer class uses the left shift operator to capture the left operand of the binary expression...
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, <<)
+        DOCTEST_FORBIT_EXPRESSION(Expression_lhs, >>)
+    };
+
+#ifndef DOCTEST_CONFIG_NO_COMPARISON_WARNING_SUPPRESSION
+
+    DOCTEST_CLANG_SUPPRESS_WARNING_POP
+    DOCTEST_MSVC_SUPPRESS_WARNING_POP
+    DOCTEST_GCC_SUPPRESS_WARNING_POP
+
+#endif // DOCTEST_CONFIG_NO_COMPARISON_WARNING_SUPPRESSION
+
+#if DOCTEST_CLANG && DOCTEST_CLANG < DOCTEST_COMPILER(3, 6, 0)
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
+#endif
+
+    struct DOCTEST_INTERFACE ExpressionDecomposer
+    {
+        assertType::Enum m_at;
+
+        ExpressionDecomposer(assertType::Enum at);
+
+        // The right operator for capturing expressions is "<=" instead of "<<" (based on the operator precedence table)
+        // but then there will be warnings from GCC about "-Wparentheses" and since "_Pragma()" is problematic this will stay for now...
+        // https://github.com/catchorg/Catch2/issues/870
+        // https://github.com/catchorg/Catch2/issues/565
+        template <typename L>
+        Expression_lhs<L> operator<<(L&& operand) {
+            return Expression_lhs<L>(static_cast<L&&>(operand), m_at);
+        }
+
+        template <typename L,typename types::enable_if<!doctest::detail::types::is_rvalue_reference<L>::value,void >::type* = nullptr>
+        Expression_lhs<const L&> operator<<(const L &operand) {
+            return Expression_lhs<const L&>(operand, m_at);
+        }
+    };
+
+    struct DOCTEST_INTERFACE TestSuite
+    {
+        const char* m_test_suite = nullptr;
+        const char* m_description = nullptr;
+        bool        m_skip = false;
+        bool        m_no_breaks = false;
+        bool        m_no_output = false;
+        bool        m_may_fail = false;
+        bool        m_should_fail = false;
+        int         m_expected_failures = 0;
+        double      m_timeout = 0;
+
+        TestSuite& operator*(const char* in);
+
+        template <typename T>
+        TestSuite& operator*(const T& in) {
+            in.fill(*this);
+            return *this;
+        }
+    };
+
+    using funcType = void (*)();
+
+    struct DOCTEST_INTERFACE TestCase : public TestCaseData
+    {
+        funcType m_test; // a function pointer to the test case
+
+        String m_type; // for templated test cases - gets appended to the real name
+        int m_template_id; // an ID used to distinguish between the different versions of a templated test case
+        String m_full_name; // contains the name (only for templated test cases!) + the template type
+
+        TestCase(funcType test, const char* file, unsigned line, const TestSuite& test_suite,
+                 const String& type = String(), int template_id = -1);
+
+        TestCase(const TestCase& other);
+        TestCase(TestCase&&) = delete;
+
+        DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(26434) // hides a non-virtual function
+        TestCase& operator=(const TestCase& other);
+        DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+        TestCase& operator=(TestCase&&) = delete;
+
+        TestCase& operator*(const char* in);
+
+        template <typename T>
+        TestCase& operator*(const T& in) {
+            in.fill(*this);
+            return *this;
+        }
+
+        bool operator<(const TestCase& other) const;
+
+        ~TestCase() = default;
+    };
+
+    // forward declarations of functions used by the macros
+    DOCTEST_INTERFACE int  regTest(const TestCase& tc);
+    DOCTEST_INTERFACE int  setTestSuite(const TestSuite& ts);
+    DOCTEST_INTERFACE bool isDebuggerActive();
+
+    template<typename T>
+    int instantiationHelper(const T&) { return 0; }
+
+    namespace binaryAssertComparison {
+        enum Enum
+        {
+            eq = 0,
+            ne,
+            gt,
+            lt,
+            ge,
+            le
+        };
+    } // namespace binaryAssertComparison
+
+    // clang-format off
+    template <int, class L, class R> struct RelationalComparator     { bool operator()(const DOCTEST_REF_WRAP(L),     const DOCTEST_REF_WRAP(R)    ) const { return false;        } };
+
+#define DOCTEST_BINARY_RELATIONAL_OP(n, op) \
+    template <class L, class R> struct RelationalComparator<n, L, R> { bool operator()(const DOCTEST_REF_WRAP(L) lhs, const DOCTEST_REF_WRAP(R) rhs) const { return op(lhs, rhs); } };
+    // clang-format on
+
+    DOCTEST_BINARY_RELATIONAL_OP(0, doctest::detail::eq)
+    DOCTEST_BINARY_RELATIONAL_OP(1, doctest::detail::ne)
+    DOCTEST_BINARY_RELATIONAL_OP(2, doctest::detail::gt)
+    DOCTEST_BINARY_RELATIONAL_OP(3, doctest::detail::lt)
+    DOCTEST_BINARY_RELATIONAL_OP(4, doctest::detail::ge)
+    DOCTEST_BINARY_RELATIONAL_OP(5, doctest::detail::le)
+
+    struct DOCTEST_INTERFACE ResultBuilder : public AssertData
+    {
+        ResultBuilder(assertType::Enum at, const char* file, int line, const char* expr,
+                      const char* exception_type = "", const String& exception_string = "");
+
+        ResultBuilder(assertType::Enum at, const char* file, int line, const char* expr,
+                      const char* exception_type, const Contains& exception_string);
+
+        void setResult(const Result& res);
+
+        template <int comparison, typename L, typename R>
+        DOCTEST_NOINLINE bool binary_assert(const DOCTEST_REF_WRAP(L) lhs,
+                                            const DOCTEST_REF_WRAP(R) rhs) {
+            m_failed = !RelationalComparator<comparison, L, R>()(lhs, rhs);
+            if (m_failed || getContextOptions()->success) {
+                m_decomp = stringifyBinaryExpr(lhs, ", ", rhs);
+            }
+            return !m_failed;
+        }
+
+        template <typename L>
+        DOCTEST_NOINLINE bool unary_assert(const DOCTEST_REF_WRAP(L) val) {
+            m_failed = !val;
+
+            if (m_at & assertType::is_false) { //!OCLINT bitwise operator in conditional
+                m_failed = !m_failed;
+            }
+
+            if (m_failed || getContextOptions()->success) {
+                m_decomp = (DOCTEST_STRINGIFY(val));
+            }
+
+            return !m_failed;
+        }
+
+        void translateException();
+
+        bool log();
+        void react() const;
+    };
+
+    namespace assertAction {
+        enum Enum
+        {
+            nothing     = 0,
+            dbgbreak    = 1,
+            shouldthrow = 2
+        };
+    } // namespace assertAction
+
+    DOCTEST_INTERFACE void failed_out_of_a_testing_context(const AssertData& ad);
+
+    DOCTEST_INTERFACE bool decomp_assert(assertType::Enum at, const char* file, int line,
+                                         const char* expr, const Result& result);
+
+#define DOCTEST_ASSERT_OUT_OF_TESTS(decomp)                                                        \
+    do {                                                                                           \
+        if(!is_running_in_test) {                                                                  \
+            if(failed) {                                                                           \
+                ResultBuilder rb(at, file, line, expr);                                            \
+                rb.m_failed = failed;                                                              \
+                rb.m_decomp = decomp;                                                              \
+                failed_out_of_a_testing_context(rb);                                               \
+                if(isDebuggerActive() && !getContextOptions()->no_breaks)                          \
+                    DOCTEST_BREAK_INTO_DEBUGGER();                                                 \
+                if(checkIfShouldThrow(at))                                                         \
+                    throwException();                                                              \
+            }                                                                                      \
+            return !failed;                                                                        \
+        }                                                                                          \
+    } while(false)
+
+#define DOCTEST_ASSERT_IN_TESTS(decomp)                                                            \
+    ResultBuilder rb(at, file, line, expr);                                                        \
+    rb.m_failed = failed;                                                                          \
+    if(rb.m_failed || getContextOptions()->success)                                                \
+        rb.m_decomp = decomp;                                                                      \
+    if(rb.log())                                                                                   \
+        DOCTEST_BREAK_INTO_DEBUGGER();                                                             \
+    if(rb.m_failed && checkIfShouldThrow(at))                                                      \
+    throwException()
+
+    template <int comparison, typename L, typename R>
+    DOCTEST_NOINLINE bool binary_assert(assertType::Enum at, const char* file, int line,
+                                        const char* expr, const DOCTEST_REF_WRAP(L) lhs,
+                                        const DOCTEST_REF_WRAP(R) rhs) {
+        bool failed = !RelationalComparator<comparison, L, R>()(lhs, rhs);
+
+        // ###################################################################################
+        // IF THE DEBUGGER BREAKS HERE - GO 1 LEVEL UP IN THE CALLSTACK FOR THE FAILING ASSERT
+        // THIS IS THE EFFECT OF HAVING 'DOCTEST_CONFIG_SUPER_FAST_ASSERTS' DEFINED
+        // ###################################################################################
+        DOCTEST_ASSERT_OUT_OF_TESTS(stringifyBinaryExpr(lhs, ", ", rhs));
+        DOCTEST_ASSERT_IN_TESTS(stringifyBinaryExpr(lhs, ", ", rhs));
+        return !failed;
+    }
+
+    template <typename L>
+    DOCTEST_NOINLINE bool unary_assert(assertType::Enum at, const char* file, int line,
+                                       const char* expr, const DOCTEST_REF_WRAP(L) val) {
+        bool failed = !val;
+
+        if(at & assertType::is_false) //!OCLINT bitwise operator in conditional
+            failed = !failed;
+
+        // ###################################################################################
+        // IF THE DEBUGGER BREAKS HERE - GO 1 LEVEL UP IN THE CALLSTACK FOR THE FAILING ASSERT
+        // THIS IS THE EFFECT OF HAVING 'DOCTEST_CONFIG_SUPER_FAST_ASSERTS' DEFINED
+        // ###################################################################################
+        DOCTEST_ASSERT_OUT_OF_TESTS((DOCTEST_STRINGIFY(val)));
+        DOCTEST_ASSERT_IN_TESTS((DOCTEST_STRINGIFY(val)));
+        return !failed;
+    }
+
+    struct DOCTEST_INTERFACE IExceptionTranslator
+    {
+        DOCTEST_DECLARE_INTERFACE(IExceptionTranslator)
+        virtual bool translate(String&) const = 0;
+    };
+
+    template <typename T>
+    class ExceptionTranslator : public IExceptionTranslator //!OCLINT destructor of virtual class
+    {
+    public:
+        explicit ExceptionTranslator(String (*translateFunction)(T))
+                : m_translateFunction(translateFunction) {}
+
+        bool translate(String& res) const override {
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+            try {
+                throw; // lgtm [cpp/rethrow-no-exception]
+                // cppcheck-suppress catchExceptionByValue
+            } catch(const T& ex) {
+                res = m_translateFunction(ex); //!OCLINT parameter reassignment
+                return true;
+            } catch(...) {}         //!OCLINT -  empty catch statement
+#endif                              // DOCTEST_CONFIG_NO_EXCEPTIONS
+            static_cast<void>(res); // to silence -Wunused-parameter
+            return false;
+        }
+
+    private:
+        String (*m_translateFunction)(T);
+    };
+
+    DOCTEST_INTERFACE void registerExceptionTranslatorImpl(const IExceptionTranslator* et);
+
+    // ContextScope base class used to allow implementing methods of ContextScope
+    // that don't depend on the template parameter in doctest.cpp.
+    struct DOCTEST_INTERFACE ContextScopeBase : public IContextScope {
+        ContextScopeBase(const ContextScopeBase&) = delete;
+
+        ContextScopeBase& operator=(const ContextScopeBase&) = delete;
+        ContextScopeBase& operator=(ContextScopeBase&&) = delete;
+
+        ~ContextScopeBase() override = default;
+
+    protected:
+        ContextScopeBase();
+        ContextScopeBase(ContextScopeBase&& other) noexcept;
+
+        void destroy();
+        bool need_to_destroy{true};
+    };
+
+    template <typename L> class ContextScope : public ContextScopeBase
+    {
+        L lambda_;
+
+    public:
+        explicit ContextScope(const L &lambda) : lambda_(lambda) {}
+        explicit ContextScope(L&& lambda) : lambda_(static_cast<L&&>(lambda)) { }
+
+        ContextScope(const ContextScope&) = delete;
+        ContextScope(ContextScope&&) noexcept = default;
+
+        ContextScope& operator=(const ContextScope&) = delete;
+        ContextScope& operator=(ContextScope&&) = delete;
+
+        void stringify(std::ostream* s) const override { lambda_(s); }
+
+        ~ContextScope() override {
+            if (need_to_destroy) {
+                destroy();
+            }
+        }
+    };
+
+    struct DOCTEST_INTERFACE MessageBuilder : public MessageData
+    {
+        std::ostream* m_stream;
+        bool          logged = false;
+
+        MessageBuilder(const char* file, int line, assertType::Enum severity);
+
+        MessageBuilder(const MessageBuilder&) = delete;
+        MessageBuilder(MessageBuilder&&) = delete;
+
+        MessageBuilder& operator=(const MessageBuilder&) = delete;
+        MessageBuilder& operator=(MessageBuilder&&) = delete;
+
+        ~MessageBuilder();
+
+        // the preferred way of chaining parameters for stringification
+DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4866)
+        template <typename T>
+        MessageBuilder& operator,(const T& in) {
+            *m_stream << (DOCTEST_STRINGIFY(in));
+            return *this;
+        }
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+        // kept here just for backwards-compatibility - the comma operator should be preferred now
+        template <typename T>
+        MessageBuilder& operator<<(const T& in) { return this->operator,(in); }
+
+        // the `,` operator has the lowest operator precedence - if `<<` is used by the user then
+        // the `,` operator will be called last which is not what we want and thus the `*` operator
+        // is used first (has higher operator precedence compared to `<<`) so that we guarantee that
+        // an operator of the MessageBuilder class is called first before the rest of the parameters
+        template <typename T>
+        MessageBuilder& operator*(const T& in) { return this->operator,(in); }
+
+        bool log();
+        void react();
+    };
+
+    template <typename L>
+    ContextScope<L> MakeContextScope(const L &lambda) {
+        return ContextScope<L>(lambda);
+    }
+} // namespace detail
+
+#define DOCTEST_DEFINE_DECORATOR(name, type, def)                                                  \
+    struct name                                                                                    \
+    {                                                                                              \
+        type data;                                                                                 \
+        name(type in = def)                                                                        \
+                : data(in) {}                                                                      \
+        void fill(detail::TestCase& state) const { state.DOCTEST_CAT(m_, name) = data; }           \
+        void fill(detail::TestSuite& state) const { state.DOCTEST_CAT(m_, name) = data; }          \
+    }
+
+DOCTEST_DEFINE_DECORATOR(test_suite, const char*, "");
+DOCTEST_DEFINE_DECORATOR(description, const char*, "");
+DOCTEST_DEFINE_DECORATOR(skip, bool, true);
+DOCTEST_DEFINE_DECORATOR(no_breaks, bool, true);
+DOCTEST_DEFINE_DECORATOR(no_output, bool, true);
+DOCTEST_DEFINE_DECORATOR(timeout, double, 0);
+DOCTEST_DEFINE_DECORATOR(may_fail, bool, true);
+DOCTEST_DEFINE_DECORATOR(should_fail, bool, true);
+DOCTEST_DEFINE_DECORATOR(expected_failures, int, 0);
+
+template <typename T>
+int registerExceptionTranslator(String (*translateFunction)(T)) {
+    DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wexit-time-destructors")
+    static detail::ExceptionTranslator<T> exceptionTranslator(translateFunction);
+    DOCTEST_CLANG_SUPPRESS_WARNING_POP
+    detail::registerExceptionTranslatorImpl(&exceptionTranslator);
+    return 0;
+}
+
+} // namespace doctest
+
+// in a separate namespace outside of doctest because the DOCTEST_TEST_SUITE macro
+// introduces an anonymous namespace in which getCurrentTestSuite gets overridden
+namespace doctest_detail_test_suite_ns {
+DOCTEST_INTERFACE doctest::detail::TestSuite& getCurrentTestSuite();
+} // namespace doctest_detail_test_suite_ns
+
+namespace doctest {
+#else  // DOCTEST_CONFIG_DISABLE
+template <typename T>
+int registerExceptionTranslator(String (*)(T)) {
+    return 0;
+}
+#endif // DOCTEST_CONFIG_DISABLE
+
+namespace detail {
+    using assert_handler = void (*)(const AssertData&);
+    struct ContextState;
+} // namespace detail
+
+class DOCTEST_INTERFACE Context
+{
+    detail::ContextState* p;
+
+    void parseArgs(int argc, const char* const* argv, bool withDefaults = false);
+
+public:
+    explicit Context(int argc = 0, const char* const* argv = nullptr);
+
+    Context(const Context&) = delete;
+    Context(Context&&) = delete;
+
+    Context& operator=(const Context&) = delete;
+    Context& operator=(Context&&) = delete;
+
+    ~Context(); // NOLINT(performance-trivially-destructible)
+
+    void applyCommandLine(int argc, const char* const* argv);
+
+    void addFilter(const char* filter, const char* value);
+    void clearFilters();
+    void setOption(const char* option, bool value);
+    void setOption(const char* option, int value);
+    void setOption(const char* option, const char* value);
+
+    bool shouldExit();
+
+    void setAsDefaultForAssertsOutOfTestCases();
+
+    void setAssertHandler(detail::assert_handler ah);
+
+    void setCout(std::ostream* out);
+
+    int run();
+};
+
+namespace TestCaseFailureReason {
+    enum Enum
+    {
+        None                     = 0,
+        AssertFailure            = 1,   // an assertion has failed in the test case
+        Exception                = 2,   // test case threw an exception
+        Crash                    = 4,   // a crash...
+        TooManyFailedAsserts     = 8,   // the abort-after option
+        Timeout                  = 16,  // see the timeout decorator
+        ShouldHaveFailedButDidnt = 32,  // see the should_fail decorator
+        ShouldHaveFailedAndDid   = 64,  // see the should_fail decorator
+        DidntFailExactlyNumTimes = 128, // see the expected_failures decorator
+        FailedExactlyNumTimes    = 256, // see the expected_failures decorator
+        CouldHaveFailedAndDid    = 512  // see the may_fail decorator
+    };
+} // namespace TestCaseFailureReason
+
+struct DOCTEST_INTERFACE CurrentTestCaseStats
+{
+    int    numAssertsCurrentTest;
+    int    numAssertsFailedCurrentTest;
+    double seconds;
+    int    failure_flags; // use TestCaseFailureReason::Enum
+    bool   testCaseSuccess;
+};
+
+struct DOCTEST_INTERFACE TestCaseException
+{
+    String error_string;
+    bool   is_crash;
+};
+
+struct DOCTEST_INTERFACE TestRunStats
+{
+    unsigned numTestCases;
+    unsigned numTestCasesPassingFilters;
+    unsigned numTestSuitesPassingFilters;
+    unsigned numTestCasesFailed;
+    int      numAsserts;
+    int      numAssertsFailed;
+};
+
+struct QueryData
+{
+    const TestRunStats*  run_stats = nullptr;
+    const TestCaseData** data      = nullptr;
+    unsigned             num_data  = 0;
+};
+
+struct DOCTEST_INTERFACE IReporter
+{
+    // The constructor has to accept "const ContextOptions&" as a single argument
+    // which has most of the options for the run + a pointer to the stdout stream
+    // Reporter(const ContextOptions& in)
+
+    // called when a query should be reported (listing test cases, printing the version, etc.)
+    virtual void report_query(const QueryData&) = 0;
+
+    // called when the whole test run starts
+    virtual void test_run_start() = 0;
+    // called when the whole test run ends (caching a pointer to the input doesn't make sense here)
+    virtual void test_run_end(const TestRunStats&) = 0;
+
+    // called when a test case is started (safe to cache a pointer to the input)
+    virtual void test_case_start(const TestCaseData&) = 0;
+    // called when a test case is reentered because of unfinished subcases (safe to cache a pointer to the input)
+    virtual void test_case_reenter(const TestCaseData&) = 0;
+    // called when a test case has ended
+    virtual void test_case_end(const CurrentTestCaseStats&) = 0;
+
+    // called when an exception is thrown from the test case (or it crashes)
+    virtual void test_case_exception(const TestCaseException&) = 0;
+
+    // called whenever a subcase is entered (don't cache pointers to the input)
+    virtual void subcase_start(const SubcaseSignature&) = 0;
+    // called whenever a subcase is exited (don't cache pointers to the input)
+    virtual void subcase_end() = 0;
+
+    // called for each assert (don't cache pointers to the input)
+    virtual void log_assert(const AssertData&) = 0;
+    // called for each message (don't cache pointers to the input)
+    virtual void log_message(const MessageData&) = 0;
+
+    // called when a test case is skipped either because it doesn't pass the filters, has a skip decorator
+    // or isn't in the execution range (between first and last) (safe to cache a pointer to the input)
+    virtual void test_case_skipped(const TestCaseData&) = 0;
+
+    DOCTEST_DECLARE_INTERFACE(IReporter)
+
+    // can obtain all currently active contexts and stringify them if one wishes to do so
+    static int                         get_num_active_contexts();
+    static const IContextScope* const* get_active_contexts();
+
+    // can iterate through contexts which have been stringified automatically in their destructors when an exception has been thrown
+    static int           get_num_stringified_contexts();
+    static const String* get_stringified_contexts();
+};
+
+namespace detail {
+    using reporterCreatorFunc =  IReporter* (*)(const ContextOptions&);
+
+    DOCTEST_INTERFACE void registerReporterImpl(const char* name, int prio, reporterCreatorFunc c, bool isReporter);
+
+    template <typename Reporter>
+    IReporter* reporterCreator(const ContextOptions& o) {
+        return new Reporter(o);
+    }
+} // namespace detail
+
+template <typename Reporter>
+int registerReporter(const char* name, int priority, bool isReporter) {
+    detail::registerReporterImpl(name, priority, detail::reporterCreator<Reporter>, isReporter);
+    return 0;
+}
+} // namespace doctest
+
+#ifdef DOCTEST_CONFIG_ASSERTS_RETURN_VALUES
+#define DOCTEST_FUNC_EMPTY [] { return false; }()
+#else
+#define DOCTEST_FUNC_EMPTY (void)0
+#endif
+
+// if registering is not disabled
+#ifndef DOCTEST_CONFIG_DISABLE
+
+#ifdef DOCTEST_CONFIG_ASSERTS_RETURN_VALUES
+#define DOCTEST_FUNC_SCOPE_BEGIN [&]
+#define DOCTEST_FUNC_SCOPE_END ()
+#define DOCTEST_FUNC_SCOPE_RET(v) return v
+#else
+#define DOCTEST_FUNC_SCOPE_BEGIN do
+#define DOCTEST_FUNC_SCOPE_END while(false)
+#define DOCTEST_FUNC_SCOPE_RET(v) (void)0
+#endif
+
+// common code in asserts - for convenience
+#define DOCTEST_ASSERT_LOG_REACT_RETURN(b)                                                         \
+    if(b.log()) DOCTEST_BREAK_INTO_DEBUGGER();                                                     \
+    b.react();                                                                                     \
+    DOCTEST_FUNC_SCOPE_RET(!b.m_failed)
+
+#ifdef DOCTEST_CONFIG_NO_TRY_CATCH_IN_ASSERTS
+#define DOCTEST_WRAP_IN_TRY(x) x;
+#else // DOCTEST_CONFIG_NO_TRY_CATCH_IN_ASSERTS
+#define DOCTEST_WRAP_IN_TRY(x)                                                                     \
+    try {                                                                                          \
+        x;                                                                                         \
+    } catch(...) { DOCTEST_RB.translateException(); }
+#endif // DOCTEST_CONFIG_NO_TRY_CATCH_IN_ASSERTS
+
+#ifdef DOCTEST_CONFIG_VOID_CAST_EXPRESSIONS
+#define DOCTEST_CAST_TO_VOID(...)                                                                  \
+    DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH("-Wuseless-cast")                                       \
+    static_cast<void>(__VA_ARGS__);                                                                \
+    DOCTEST_GCC_SUPPRESS_WARNING_POP
+#else // DOCTEST_CONFIG_VOID_CAST_EXPRESSIONS
+#define DOCTEST_CAST_TO_VOID(...) __VA_ARGS__;
+#endif // DOCTEST_CONFIG_VOID_CAST_EXPRESSIONS
+
+// registers the test by initializing a dummy var with a function
+#define DOCTEST_REGISTER_FUNCTION(global_prefix, f, decorators)                                    \
+    global_prefix DOCTEST_GLOBAL_NO_WARNINGS(DOCTEST_ANONYMOUS(DOCTEST_ANON_VAR_), /* NOLINT */    \
+            doctest::detail::regTest(                                                              \
+                    doctest::detail::TestCase(                                                     \
+                            f, __FILE__, __LINE__,                                                 \
+                            doctest_detail_test_suite_ns::getCurrentTestSuite()) *                 \
+                    decorators))
+
+#define DOCTEST_IMPLEMENT_FIXTURE(der, base, func, decorators)                                     \
+    namespace { /* NOLINT */                                                                       \
+        struct der : public base                                                                   \
+        {                                                                                          \
+            void f();                                                                              \
+        };                                                                                         \
+        static DOCTEST_INLINE_NOINLINE void func() {                                               \
+            der v;                                                                                 \
+            v.f();                                                                                 \
+        }                                                                                          \
+        DOCTEST_REGISTER_FUNCTION(DOCTEST_EMPTY, func, decorators)                                 \
+    }                                                                                              \
+    DOCTEST_INLINE_NOINLINE void der::f() // NOLINT(misc-definitions-in-headers)
+
+#define DOCTEST_CREATE_AND_REGISTER_FUNCTION(f, decorators)                                        \
+    static void f();                                                                               \
+    DOCTEST_REGISTER_FUNCTION(DOCTEST_EMPTY, f, decorators)                                        \
+    static void f()
+
+#define DOCTEST_CREATE_AND_REGISTER_FUNCTION_IN_CLASS(f, proxy, decorators)                        \
+    static doctest::detail::funcType proxy() { return f; }                                         \
+    DOCTEST_REGISTER_FUNCTION(inline, proxy(), decorators)                                         \
+    static void f()
+
+// for registering tests
+#define DOCTEST_TEST_CASE(decorators)                                                              \
+    DOCTEST_CREATE_AND_REGISTER_FUNCTION(DOCTEST_ANONYMOUS(DOCTEST_ANON_FUNC_), decorators)
+
+// for registering tests in classes - requires C++17 for inline variables!
+#if DOCTEST_CPLUSPLUS >= 201703L
+#define DOCTEST_TEST_CASE_CLASS(decorators)                                                        \
+    DOCTEST_CREATE_AND_REGISTER_FUNCTION_IN_CLASS(DOCTEST_ANONYMOUS(DOCTEST_ANON_FUNC_),           \
+                                                  DOCTEST_ANONYMOUS(DOCTEST_ANON_PROXY_),          \
+                                                  decorators)
+#else // DOCTEST_TEST_CASE_CLASS
+#define DOCTEST_TEST_CASE_CLASS(...)                                                               \
+    TEST_CASES_CAN_BE_REGISTERED_IN_CLASSES_ONLY_IN_CPP17_MODE_OR_WITH_VS_2017_OR_NEWER
+#endif // DOCTEST_TEST_CASE_CLASS
+
+// for registering tests with a fixture
+#define DOCTEST_TEST_CASE_FIXTURE(c, decorators)                                                   \
+    DOCTEST_IMPLEMENT_FIXTURE(DOCTEST_ANONYMOUS(DOCTEST_ANON_CLASS_), c,                           \
+                              DOCTEST_ANONYMOUS(DOCTEST_ANON_FUNC_), decorators)
+
+// for converting types to strings without the <typeinfo> header and demangling
+#define DOCTEST_TYPE_TO_STRING_AS(str, ...)                                                        \
+    namespace doctest {                                                                            \
+        template <>                                                                                \
+        inline String toString<__VA_ARGS__>() {                                                    \
+            return str;                                                                            \
+        }                                                                                          \
+    }                                                                                              \
+    static_assert(true, "")
+
+#define DOCTEST_TYPE_TO_STRING(...) DOCTEST_TYPE_TO_STRING_AS(#__VA_ARGS__, __VA_ARGS__)
+
+#define DOCTEST_TEST_CASE_TEMPLATE_DEFINE_IMPL(dec, T, iter, func)                                 \
+    template <typename T>                                                                          \
+    static void func();                                                                            \
+    namespace { /* NOLINT */                                                                       \
+        template <typename Tuple>                                                                  \
+        struct iter;                                                                               \
+        template <typename Type, typename... Rest>                                                 \
+        struct iter<std::tuple<Type, Rest...>>                                                     \
+        {                                                                                          \
+            iter(const char* file, unsigned line, int index) {                                     \
+                doctest::detail::regTest(doctest::detail::TestCase(func<Type>, file, line,         \
+                                            doctest_detail_test_suite_ns::getCurrentTestSuite(),   \
+                                            doctest::toString<Type>(),                             \
+                                            int(line) * 1000 + index)                              \
+                                         * dec);                                                   \
+                iter<std::tuple<Rest...>>(file, line, index + 1);                                  \
+            }                                                                                      \
+        };                                                                                         \
+        template <>                                                                                \
+        struct iter<std::tuple<>>                                                                  \
+        {                                                                                          \
+            iter(const char*, unsigned, int) {}                                                    \
+        };                                                                                         \
+    }                                                                                              \
+    template <typename T>                                                                          \
+    static void func()
+
+#define DOCTEST_TEST_CASE_TEMPLATE_DEFINE(dec, T, id)                                              \
+    DOCTEST_TEST_CASE_TEMPLATE_DEFINE_IMPL(dec, T, DOCTEST_CAT(id, ITERATOR),                      \
+                                           DOCTEST_ANONYMOUS(DOCTEST_ANON_TMP_))
+
+#define DOCTEST_TEST_CASE_TEMPLATE_INSTANTIATE_IMPL(id, anon, ...)                                 \
+    DOCTEST_GLOBAL_NO_WARNINGS(DOCTEST_CAT(anon, DUMMY), /* NOLINT(cert-err58-cpp, fuchsia-statically-constructed-objects) */ \
+        doctest::detail::instantiationHelper(                                                      \
+            DOCTEST_CAT(id, ITERATOR)<__VA_ARGS__>(__FILE__, __LINE__, 0)))
+
+#define DOCTEST_TEST_CASE_TEMPLATE_INVOKE(id, ...)                                                 \
+    DOCTEST_TEST_CASE_TEMPLATE_INSTANTIATE_IMPL(id, DOCTEST_ANONYMOUS(DOCTEST_ANON_TMP_), std::tuple<__VA_ARGS__>) \
+    static_assert(true, "")
+
+#define DOCTEST_TEST_CASE_TEMPLATE_APPLY(id, ...)                                                  \
+    DOCTEST_TEST_CASE_TEMPLATE_INSTANTIATE_IMPL(id, DOCTEST_ANONYMOUS(DOCTEST_ANON_TMP_), __VA_ARGS__) \
+    static_assert(true, "")
+
+#define DOCTEST_TEST_CASE_TEMPLATE_IMPL(dec, T, anon, ...)                                         \
+    DOCTEST_TEST_CASE_TEMPLATE_DEFINE_IMPL(dec, T, DOCTEST_CAT(anon, ITERATOR), anon);             \
+    DOCTEST_TEST_CASE_TEMPLATE_INSTANTIATE_IMPL(anon, anon, std::tuple<__VA_ARGS__>)               \
+    template <typename T>                                                                          \
+    static void anon()
+
+#define DOCTEST_TEST_CASE_TEMPLATE(dec, T, ...)                                                    \
+    DOCTEST_TEST_CASE_TEMPLATE_IMPL(dec, T, DOCTEST_ANONYMOUS(DOCTEST_ANON_TMP_), __VA_ARGS__)
+
+// for subcases
+#define DOCTEST_SUBCASE(name)                                                                      \
+    if(const doctest::detail::Subcase & DOCTEST_ANONYMOUS(DOCTEST_ANON_SUBCASE_) DOCTEST_UNUSED =  \
+               doctest::detail::Subcase(name, __FILE__, __LINE__))
+
+// for grouping tests in test suites by using code blocks
+#define DOCTEST_TEST_SUITE_IMPL(decorators, ns_name)                                               \
+    namespace ns_name { namespace doctest_detail_test_suite_ns {                                   \
+            static DOCTEST_NOINLINE doctest::detail::TestSuite& getCurrentTestSuite() noexcept {   \
+                DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4640)                                      \
+                DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wexit-time-destructors")                \
+                DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH("-Wmissing-field-initializers")             \
+                static doctest::detail::TestSuite data{};                                          \
+                static bool                       inited = false;                                  \
+                DOCTEST_MSVC_SUPPRESS_WARNING_POP                                                  \
+                DOCTEST_CLANG_SUPPRESS_WARNING_POP                                                 \
+                DOCTEST_GCC_SUPPRESS_WARNING_POP                                                   \
+                if(!inited) {                                                                      \
+                    data* decorators;                                                              \
+                    inited = true;                                                                 \
+                }                                                                                  \
+                return data;                                                                       \
+            }                                                                                      \
+        }                                                                                          \
+    }                                                                                              \
+    namespace ns_name
+
+#define DOCTEST_TEST_SUITE(decorators)                                                             \
+    DOCTEST_TEST_SUITE_IMPL(decorators, DOCTEST_ANONYMOUS(DOCTEST_ANON_SUITE_))
+
+// for starting a testsuite block
+#define DOCTEST_TEST_SUITE_BEGIN(decorators)                                                       \
+    DOCTEST_GLOBAL_NO_WARNINGS(DOCTEST_ANONYMOUS(DOCTEST_ANON_VAR_), /* NOLINT(cert-err58-cpp) */  \
+            doctest::detail::setTestSuite(doctest::detail::TestSuite() * decorators))              \
+    static_assert(true, "")
+
+// for ending a testsuite block
+#define DOCTEST_TEST_SUITE_END                                                                     \
+    DOCTEST_GLOBAL_NO_WARNINGS(DOCTEST_ANONYMOUS(DOCTEST_ANON_VAR_), /* NOLINT(cert-err58-cpp) */  \
+            doctest::detail::setTestSuite(doctest::detail::TestSuite() * ""))                      \
+    using DOCTEST_ANONYMOUS(DOCTEST_ANON_FOR_SEMICOLON_) = int
+
+// for registering exception translators
+#define DOCTEST_REGISTER_EXCEPTION_TRANSLATOR_IMPL(translatorName, signature)                      \
+    inline doctest::String translatorName(signature);                                              \
+    DOCTEST_GLOBAL_NO_WARNINGS(DOCTEST_ANONYMOUS(DOCTEST_ANON_TRANSLATOR_), /* NOLINT(cert-err58-cpp) */ \
+            doctest::registerExceptionTranslator(translatorName))                                  \
+    doctest::String translatorName(signature)
+
+#define DOCTEST_REGISTER_EXCEPTION_TRANSLATOR(signature)                                           \
+    DOCTEST_REGISTER_EXCEPTION_TRANSLATOR_IMPL(DOCTEST_ANONYMOUS(DOCTEST_ANON_TRANSLATOR_),        \
+                                               signature)
+
+// for registering reporters
+#define DOCTEST_REGISTER_REPORTER(name, priority, reporter)                                        \
+    DOCTEST_GLOBAL_NO_WARNINGS(DOCTEST_ANONYMOUS(DOCTEST_ANON_REPORTER_), /* NOLINT(cert-err58-cpp) */ \
+            doctest::registerReporter<reporter>(name, priority, true))                             \
+    static_assert(true, "")
+
+// for registering listeners
+#define DOCTEST_REGISTER_LISTENER(name, priority, reporter)                                        \
+    DOCTEST_GLOBAL_NO_WARNINGS(DOCTEST_ANONYMOUS(DOCTEST_ANON_REPORTER_), /* NOLINT(cert-err58-cpp) */ \
+            doctest::registerReporter<reporter>(name, priority, false))                            \
+    static_assert(true, "")
+
+// clang-format off
+// for logging - disabling formatting because it's important to have these on 2 separate lines - see PR #557
+#define DOCTEST_INFO(...)                                                                          \
+    DOCTEST_INFO_IMPL(DOCTEST_ANONYMOUS(DOCTEST_CAPTURE_),                                         \
+                      DOCTEST_ANONYMOUS(DOCTEST_CAPTURE_OTHER_),                                   \
+                      __VA_ARGS__)
+// clang-format on
+
+#define DOCTEST_INFO_IMPL(mb_name, s_name, ...)                                       \
+    auto DOCTEST_ANONYMOUS(DOCTEST_CAPTURE_) = doctest::detail::MakeContextScope(                  \
+        [&](std::ostream* s_name) {                                                                \
+        doctest::detail::MessageBuilder mb_name(__FILE__, __LINE__, doctest::assertType::is_warn); \
+        mb_name.m_stream = s_name;                                                                 \
+        mb_name * __VA_ARGS__;                                                                     \
+    })
+
+#define DOCTEST_CAPTURE(x) DOCTEST_INFO(#x " := ", x)
+
+#define DOCTEST_ADD_AT_IMPL(type, file, line, mb, ...)                                             \
+    DOCTEST_FUNC_SCOPE_BEGIN {                                                                     \
+        doctest::detail::MessageBuilder mb(file, line, doctest::assertType::type);                 \
+        mb * __VA_ARGS__;                                                                          \
+        if(mb.log())                                                                               \
+            DOCTEST_BREAK_INTO_DEBUGGER();                                                         \
+        mb.react();                                                                                \
+    } DOCTEST_FUNC_SCOPE_END
+
+// clang-format off
+#define DOCTEST_ADD_MESSAGE_AT(file, line, ...) DOCTEST_ADD_AT_IMPL(is_warn, file, line, DOCTEST_ANONYMOUS(DOCTEST_MESSAGE_), __VA_ARGS__)
+#define DOCTEST_ADD_FAIL_CHECK_AT(file, line, ...) DOCTEST_ADD_AT_IMPL(is_check, file, line, DOCTEST_ANONYMOUS(DOCTEST_MESSAGE_), __VA_ARGS__)
+#define DOCTEST_ADD_FAIL_AT(file, line, ...) DOCTEST_ADD_AT_IMPL(is_require, file, line, DOCTEST_ANONYMOUS(DOCTEST_MESSAGE_), __VA_ARGS__)
+// clang-format on
+
+#define DOCTEST_MESSAGE(...) DOCTEST_ADD_MESSAGE_AT(__FILE__, __LINE__, __VA_ARGS__)
+#define DOCTEST_FAIL_CHECK(...) DOCTEST_ADD_FAIL_CHECK_AT(__FILE__, __LINE__, __VA_ARGS__)
+#define DOCTEST_FAIL(...) DOCTEST_ADD_FAIL_AT(__FILE__, __LINE__, __VA_ARGS__)
+
+#define DOCTEST_TO_LVALUE(...) __VA_ARGS__ // Not removed to keep backwards compatibility.
+
+#ifndef DOCTEST_CONFIG_SUPER_FAST_ASSERTS
+
+#define DOCTEST_ASSERT_IMPLEMENT_2(assert_type, ...)                                               \
+    DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Woverloaded-shift-op-parentheses")                  \
+    /* NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) */                                  \
+    doctest::detail::ResultBuilder DOCTEST_RB(doctest::assertType::assert_type, __FILE__,          \
+                                               __LINE__, #__VA_ARGS__);                            \
+    DOCTEST_WRAP_IN_TRY(DOCTEST_RB.setResult(                                                      \
+            doctest::detail::ExpressionDecomposer(doctest::assertType::assert_type)                \
+            << __VA_ARGS__)) /* NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) */         \
+    DOCTEST_ASSERT_LOG_REACT_RETURN(DOCTEST_RB)                                                    \
+    DOCTEST_CLANG_SUPPRESS_WARNING_POP
+
+#define DOCTEST_ASSERT_IMPLEMENT_1(assert_type, ...)                                               \
+    DOCTEST_FUNC_SCOPE_BEGIN {                                                                     \
+        DOCTEST_ASSERT_IMPLEMENT_2(assert_type, __VA_ARGS__);                                      \
+    } DOCTEST_FUNC_SCOPE_END // NOLINT(clang-analyzer-cplusplus.NewDeleteLeaks)
+
+#define DOCTEST_BINARY_ASSERT(assert_type, comp, ...)                                              \
+    DOCTEST_FUNC_SCOPE_BEGIN {                                                                     \
+        doctest::detail::ResultBuilder DOCTEST_RB(doctest::assertType::assert_type, __FILE__,      \
+                                                   __LINE__, #__VA_ARGS__);                        \
+        DOCTEST_WRAP_IN_TRY(                                                                       \
+                DOCTEST_RB.binary_assert<doctest::detail::binaryAssertComparison::comp>(           \
+                        __VA_ARGS__))                                                              \
+        DOCTEST_ASSERT_LOG_REACT_RETURN(DOCTEST_RB);                                               \
+    } DOCTEST_FUNC_SCOPE_END
+
+#define DOCTEST_UNARY_ASSERT(assert_type, ...)                                                     \
+    DOCTEST_FUNC_SCOPE_BEGIN {                                                                     \
+        doctest::detail::ResultBuilder DOCTEST_RB(doctest::assertType::assert_type, __FILE__,      \
+                                                   __LINE__, #__VA_ARGS__);                        \
+        DOCTEST_WRAP_IN_TRY(DOCTEST_RB.unary_assert(__VA_ARGS__))                                  \
+        DOCTEST_ASSERT_LOG_REACT_RETURN(DOCTEST_RB);                                               \
+    } DOCTEST_FUNC_SCOPE_END
+
+#else // DOCTEST_CONFIG_SUPER_FAST_ASSERTS
+
+// necessary for <ASSERT>_MESSAGE
+#define DOCTEST_ASSERT_IMPLEMENT_2 DOCTEST_ASSERT_IMPLEMENT_1
+
+#define DOCTEST_ASSERT_IMPLEMENT_1(assert_type, ...)                                               \
+    DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Woverloaded-shift-op-parentheses")                  \
+    doctest::detail::decomp_assert(                                                                \
+            doctest::assertType::assert_type, __FILE__, __LINE__, #__VA_ARGS__,                    \
+            doctest::detail::ExpressionDecomposer(doctest::assertType::assert_type)                \
+                    << __VA_ARGS__) DOCTEST_CLANG_SUPPRESS_WARNING_POP
+
+#define DOCTEST_BINARY_ASSERT(assert_type, comparison, ...)                                        \
+    doctest::detail::binary_assert<doctest::detail::binaryAssertComparison::comparison>(           \
+            doctest::assertType::assert_type, __FILE__, __LINE__, #__VA_ARGS__, __VA_ARGS__)
+
+#define DOCTEST_UNARY_ASSERT(assert_type, ...)                                                     \
+    doctest::detail::unary_assert(doctest::assertType::assert_type, __FILE__, __LINE__,            \
+                                  #__VA_ARGS__, __VA_ARGS__)
+
+#endif // DOCTEST_CONFIG_SUPER_FAST_ASSERTS
+
+#define DOCTEST_WARN(...) DOCTEST_ASSERT_IMPLEMENT_1(DT_WARN, __VA_ARGS__)
+#define DOCTEST_CHECK(...) DOCTEST_ASSERT_IMPLEMENT_1(DT_CHECK, __VA_ARGS__)
+#define DOCTEST_REQUIRE(...) DOCTEST_ASSERT_IMPLEMENT_1(DT_REQUIRE, __VA_ARGS__)
+#define DOCTEST_WARN_FALSE(...) DOCTEST_ASSERT_IMPLEMENT_1(DT_WARN_FALSE, __VA_ARGS__)
+#define DOCTEST_CHECK_FALSE(...) DOCTEST_ASSERT_IMPLEMENT_1(DT_CHECK_FALSE, __VA_ARGS__)
+#define DOCTEST_REQUIRE_FALSE(...) DOCTEST_ASSERT_IMPLEMENT_1(DT_REQUIRE_FALSE, __VA_ARGS__)
+
+// clang-format off
+#define DOCTEST_WARN_MESSAGE(cond, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_ASSERT_IMPLEMENT_2(DT_WARN, cond); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_CHECK_MESSAGE(cond, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_ASSERT_IMPLEMENT_2(DT_CHECK, cond); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_REQUIRE_MESSAGE(cond, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_ASSERT_IMPLEMENT_2(DT_REQUIRE, cond); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_WARN_FALSE_MESSAGE(cond, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_ASSERT_IMPLEMENT_2(DT_WARN_FALSE, cond); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_CHECK_FALSE_MESSAGE(cond, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_ASSERT_IMPLEMENT_2(DT_CHECK_FALSE, cond); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_REQUIRE_FALSE_MESSAGE(cond, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_ASSERT_IMPLEMENT_2(DT_REQUIRE_FALSE, cond); } DOCTEST_FUNC_SCOPE_END
+// clang-format on
+
+#define DOCTEST_WARN_EQ(...) DOCTEST_BINARY_ASSERT(DT_WARN_EQ, eq, __VA_ARGS__)
+#define DOCTEST_CHECK_EQ(...) DOCTEST_BINARY_ASSERT(DT_CHECK_EQ, eq, __VA_ARGS__)
+#define DOCTEST_REQUIRE_EQ(...) DOCTEST_BINARY_ASSERT(DT_REQUIRE_EQ, eq, __VA_ARGS__)
+#define DOCTEST_WARN_NE(...) DOCTEST_BINARY_ASSERT(DT_WARN_NE, ne, __VA_ARGS__)
+#define DOCTEST_CHECK_NE(...) DOCTEST_BINARY_ASSERT(DT_CHECK_NE, ne, __VA_ARGS__)
+#define DOCTEST_REQUIRE_NE(...) DOCTEST_BINARY_ASSERT(DT_REQUIRE_NE, ne, __VA_ARGS__)
+#define DOCTEST_WARN_GT(...) DOCTEST_BINARY_ASSERT(DT_WARN_GT, gt, __VA_ARGS__)
+#define DOCTEST_CHECK_GT(...) DOCTEST_BINARY_ASSERT(DT_CHECK_GT, gt, __VA_ARGS__)
+#define DOCTEST_REQUIRE_GT(...) DOCTEST_BINARY_ASSERT(DT_REQUIRE_GT, gt, __VA_ARGS__)
+#define DOCTEST_WARN_LT(...) DOCTEST_BINARY_ASSERT(DT_WARN_LT, lt, __VA_ARGS__)
+#define DOCTEST_CHECK_LT(...) DOCTEST_BINARY_ASSERT(DT_CHECK_LT, lt, __VA_ARGS__)
+#define DOCTEST_REQUIRE_LT(...) DOCTEST_BINARY_ASSERT(DT_REQUIRE_LT, lt, __VA_ARGS__)
+#define DOCTEST_WARN_GE(...) DOCTEST_BINARY_ASSERT(DT_WARN_GE, ge, __VA_ARGS__)
+#define DOCTEST_CHECK_GE(...) DOCTEST_BINARY_ASSERT(DT_CHECK_GE, ge, __VA_ARGS__)
+#define DOCTEST_REQUIRE_GE(...) DOCTEST_BINARY_ASSERT(DT_REQUIRE_GE, ge, __VA_ARGS__)
+#define DOCTEST_WARN_LE(...) DOCTEST_BINARY_ASSERT(DT_WARN_LE, le, __VA_ARGS__)
+#define DOCTEST_CHECK_LE(...) DOCTEST_BINARY_ASSERT(DT_CHECK_LE, le, __VA_ARGS__)
+#define DOCTEST_REQUIRE_LE(...) DOCTEST_BINARY_ASSERT(DT_REQUIRE_LE, le, __VA_ARGS__)
+
+#define DOCTEST_WARN_UNARY(...) DOCTEST_UNARY_ASSERT(DT_WARN_UNARY, __VA_ARGS__)
+#define DOCTEST_CHECK_UNARY(...) DOCTEST_UNARY_ASSERT(DT_CHECK_UNARY, __VA_ARGS__)
+#define DOCTEST_REQUIRE_UNARY(...) DOCTEST_UNARY_ASSERT(DT_REQUIRE_UNARY, __VA_ARGS__)
+#define DOCTEST_WARN_UNARY_FALSE(...) DOCTEST_UNARY_ASSERT(DT_WARN_UNARY_FALSE, __VA_ARGS__)
+#define DOCTEST_CHECK_UNARY_FALSE(...) DOCTEST_UNARY_ASSERT(DT_CHECK_UNARY_FALSE, __VA_ARGS__)
+#define DOCTEST_REQUIRE_UNARY_FALSE(...) DOCTEST_UNARY_ASSERT(DT_REQUIRE_UNARY_FALSE, __VA_ARGS__)
+
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+
+#define DOCTEST_ASSERT_THROWS_AS(expr, assert_type, message, ...)                                  \
+    DOCTEST_FUNC_SCOPE_BEGIN {                                                                     \
+        if(!doctest::getContextOptions()->no_throw) {                                              \
+            doctest::detail::ResultBuilder DOCTEST_RB(doctest::assertType::assert_type, __FILE__,  \
+                                                       __LINE__, #expr, #__VA_ARGS__, message);    \
+            try {                                                                                  \
+                DOCTEST_CAST_TO_VOID(expr)                                                         \
+            } catch(const typename doctest::detail::types::remove_const<                           \
+                    typename doctest::detail::types::remove_reference<__VA_ARGS__>::type>::type&) {\
+                DOCTEST_RB.translateException();                                                   \
+                DOCTEST_RB.m_threw_as = true;                                                      \
+            } catch(...) { DOCTEST_RB.translateException(); }                                      \
+            DOCTEST_ASSERT_LOG_REACT_RETURN(DOCTEST_RB);                                           \
+        } else { /* NOLINT(*-else-after-return) */                                                 \
+            DOCTEST_FUNC_SCOPE_RET(false);                                                         \
+        }                                                                                          \
+    } DOCTEST_FUNC_SCOPE_END
+
+#define DOCTEST_ASSERT_THROWS_WITH(expr, expr_str, assert_type, ...)                               \
+    DOCTEST_FUNC_SCOPE_BEGIN {                                                                     \
+        if(!doctest::getContextOptions()->no_throw) {                                              \
+            doctest::detail::ResultBuilder DOCTEST_RB(doctest::assertType::assert_type, __FILE__,  \
+                                                       __LINE__, expr_str, "", __VA_ARGS__);       \
+            try {                                                                                  \
+                DOCTEST_CAST_TO_VOID(expr)                                                         \
+            } catch(...) { DOCTEST_RB.translateException(); }                                      \
+            DOCTEST_ASSERT_LOG_REACT_RETURN(DOCTEST_RB);                                           \
+        } else { /* NOLINT(*-else-after-return) */                                                 \
+           DOCTEST_FUNC_SCOPE_RET(false);                                                          \
+        }                                                                                          \
+    } DOCTEST_FUNC_SCOPE_END
+
+#define DOCTEST_ASSERT_NOTHROW(assert_type, ...)                                                   \
+    DOCTEST_FUNC_SCOPE_BEGIN {                                                                     \
+        doctest::detail::ResultBuilder DOCTEST_RB(doctest::assertType::assert_type, __FILE__,      \
+                                                   __LINE__, #__VA_ARGS__);                        \
+        try {                                                                                      \
+            DOCTEST_CAST_TO_VOID(__VA_ARGS__)                                                      \
+        } catch(...) { DOCTEST_RB.translateException(); }                                          \
+        DOCTEST_ASSERT_LOG_REACT_RETURN(DOCTEST_RB);                                               \
+    } DOCTEST_FUNC_SCOPE_END
+
+// clang-format off
+#define DOCTEST_WARN_THROWS(...) DOCTEST_ASSERT_THROWS_WITH((__VA_ARGS__), #__VA_ARGS__, DT_WARN_THROWS, "")
+#define DOCTEST_CHECK_THROWS(...) DOCTEST_ASSERT_THROWS_WITH((__VA_ARGS__), #__VA_ARGS__, DT_CHECK_THROWS, "")
+#define DOCTEST_REQUIRE_THROWS(...) DOCTEST_ASSERT_THROWS_WITH((__VA_ARGS__), #__VA_ARGS__, DT_REQUIRE_THROWS, "")
+
+#define DOCTEST_WARN_THROWS_AS(expr, ...) DOCTEST_ASSERT_THROWS_AS(expr, DT_WARN_THROWS_AS, "", __VA_ARGS__)
+#define DOCTEST_CHECK_THROWS_AS(expr, ...) DOCTEST_ASSERT_THROWS_AS(expr, DT_CHECK_THROWS_AS, "", __VA_ARGS__)
+#define DOCTEST_REQUIRE_THROWS_AS(expr, ...) DOCTEST_ASSERT_THROWS_AS(expr, DT_REQUIRE_THROWS_AS, "", __VA_ARGS__)
+
+#define DOCTEST_WARN_THROWS_WITH(expr, ...) DOCTEST_ASSERT_THROWS_WITH(expr, #expr, DT_WARN_THROWS_WITH, __VA_ARGS__)
+#define DOCTEST_CHECK_THROWS_WITH(expr, ...) DOCTEST_ASSERT_THROWS_WITH(expr, #expr, DT_CHECK_THROWS_WITH, __VA_ARGS__)
+#define DOCTEST_REQUIRE_THROWS_WITH(expr, ...) DOCTEST_ASSERT_THROWS_WITH(expr, #expr, DT_REQUIRE_THROWS_WITH, __VA_ARGS__)
+
+#define DOCTEST_WARN_THROWS_WITH_AS(expr, message, ...) DOCTEST_ASSERT_THROWS_AS(expr, DT_WARN_THROWS_WITH_AS, message, __VA_ARGS__)
+#define DOCTEST_CHECK_THROWS_WITH_AS(expr, message, ...) DOCTEST_ASSERT_THROWS_AS(expr, DT_CHECK_THROWS_WITH_AS, message, __VA_ARGS__)
+#define DOCTEST_REQUIRE_THROWS_WITH_AS(expr, message, ...) DOCTEST_ASSERT_THROWS_AS(expr, DT_REQUIRE_THROWS_WITH_AS, message, __VA_ARGS__)
+
+#define DOCTEST_WARN_NOTHROW(...) DOCTEST_ASSERT_NOTHROW(DT_WARN_NOTHROW, __VA_ARGS__)
+#define DOCTEST_CHECK_NOTHROW(...) DOCTEST_ASSERT_NOTHROW(DT_CHECK_NOTHROW, __VA_ARGS__)
+#define DOCTEST_REQUIRE_NOTHROW(...) DOCTEST_ASSERT_NOTHROW(DT_REQUIRE_NOTHROW, __VA_ARGS__)
+
+#define DOCTEST_WARN_THROWS_MESSAGE(expr, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_WARN_THROWS(expr); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_CHECK_THROWS_MESSAGE(expr, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_CHECK_THROWS(expr); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_REQUIRE_THROWS_MESSAGE(expr, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_REQUIRE_THROWS(expr); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_WARN_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_WARN_THROWS_AS(expr, ex); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_CHECK_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_CHECK_THROWS_AS(expr, ex); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_REQUIRE_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_REQUIRE_THROWS_AS(expr, ex); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_WARN_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_WARN_THROWS_WITH(expr, with); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_CHECK_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_CHECK_THROWS_WITH(expr, with); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_REQUIRE_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_REQUIRE_THROWS_WITH(expr, with); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_WARN_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_WARN_THROWS_WITH_AS(expr, with, ex); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_CHECK_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_CHECK_THROWS_WITH_AS(expr, with, ex); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_REQUIRE_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_REQUIRE_THROWS_WITH_AS(expr, with, ex); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_WARN_NOTHROW_MESSAGE(expr, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_WARN_NOTHROW(expr); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_CHECK_NOTHROW_MESSAGE(expr, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_CHECK_NOTHROW(expr); } DOCTEST_FUNC_SCOPE_END
+#define DOCTEST_REQUIRE_NOTHROW_MESSAGE(expr, ...) DOCTEST_FUNC_SCOPE_BEGIN { DOCTEST_INFO(__VA_ARGS__); DOCTEST_REQUIRE_NOTHROW(expr); } DOCTEST_FUNC_SCOPE_END
+// clang-format on
+
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+
+// =================================================================================================
+// == WHAT FOLLOWS IS VERSIONS OF THE MACROS THAT DO NOT DO ANY REGISTERING!                      ==
+// == THIS CAN BE ENABLED BY DEFINING DOCTEST_CONFIG_DISABLE GLOBALLY!                            ==
+// =================================================================================================
+#else // DOCTEST_CONFIG_DISABLE
+
+#define DOCTEST_IMPLEMENT_FIXTURE(der, base, func, name)                                           \
+    namespace /* NOLINT */ {                                                                       \
+        template <typename DOCTEST_UNUSED_TEMPLATE_TYPE>                                           \
+        struct der : public base                                                                   \
+        { void f(); };                                                                             \
+    }                                                                                              \
+    template <typename DOCTEST_UNUSED_TEMPLATE_TYPE>                                               \
+    inline void der<DOCTEST_UNUSED_TEMPLATE_TYPE>::f()
+
+#define DOCTEST_CREATE_AND_REGISTER_FUNCTION(f, name)                                              \
+    template <typename DOCTEST_UNUSED_TEMPLATE_TYPE>                                               \
+    static inline void f()
+
+// for registering tests
+#define DOCTEST_TEST_CASE(name)                                                                    \
+    DOCTEST_CREATE_AND_REGISTER_FUNCTION(DOCTEST_ANONYMOUS(DOCTEST_ANON_FUNC_), name)
+
+// for registering tests in classes
+#define DOCTEST_TEST_CASE_CLASS(name)                                                              \
+    DOCTEST_CREATE_AND_REGISTER_FUNCTION(DOCTEST_ANONYMOUS(DOCTEST_ANON_FUNC_), name)
+
+// for registering tests with a fixture
+#define DOCTEST_TEST_CASE_FIXTURE(x, name)                                                         \
+    DOCTEST_IMPLEMENT_FIXTURE(DOCTEST_ANONYMOUS(DOCTEST_ANON_CLASS_), x,                           \
+                              DOCTEST_ANONYMOUS(DOCTEST_ANON_FUNC_), name)
+
+// for converting types to strings without the <typeinfo> header and demangling
+#define DOCTEST_TYPE_TO_STRING_AS(str, ...) static_assert(true, "")
+#define DOCTEST_TYPE_TO_STRING(...) static_assert(true, "")
+
+// for typed tests
+#define DOCTEST_TEST_CASE_TEMPLATE(name, type, ...)                                                \
+    template <typename type>                                                                       \
+    inline void DOCTEST_ANONYMOUS(DOCTEST_ANON_TMP_)()
+
+#define DOCTEST_TEST_CASE_TEMPLATE_DEFINE(name, type, id)                                          \
+    template <typename type>                                                                       \
+    inline void DOCTEST_ANONYMOUS(DOCTEST_ANON_TMP_)()
+
+#define DOCTEST_TEST_CASE_TEMPLATE_INVOKE(id, ...) static_assert(true, "")
+#define DOCTEST_TEST_CASE_TEMPLATE_APPLY(id, ...) static_assert(true, "")
+
+// for subcases
+#define DOCTEST_SUBCASE(name)
+
+// for a testsuite block
+#define DOCTEST_TEST_SUITE(name) namespace // NOLINT
+
+// for starting a testsuite block
+#define DOCTEST_TEST_SUITE_BEGIN(name) static_assert(true, "")
+
+// for ending a testsuite block
+#define DOCTEST_TEST_SUITE_END using DOCTEST_ANONYMOUS(DOCTEST_ANON_FOR_SEMICOLON_) = int
+
+#define DOCTEST_REGISTER_EXCEPTION_TRANSLATOR(signature)                                           \
+    template <typename DOCTEST_UNUSED_TEMPLATE_TYPE>                                               \
+    static inline doctest::String DOCTEST_ANONYMOUS(DOCTEST_ANON_TRANSLATOR_)(signature)
+
+#define DOCTEST_REGISTER_REPORTER(name, priority, reporter)
+#define DOCTEST_REGISTER_LISTENER(name, priority, reporter)
+
+#define DOCTEST_INFO(...) (static_cast<void>(0))
+#define DOCTEST_CAPTURE(x) (static_cast<void>(0))
+#define DOCTEST_ADD_MESSAGE_AT(file, line, ...) (static_cast<void>(0))
+#define DOCTEST_ADD_FAIL_CHECK_AT(file, line, ...) (static_cast<void>(0))
+#define DOCTEST_ADD_FAIL_AT(file, line, ...) (static_cast<void>(0))
+#define DOCTEST_MESSAGE(...) (static_cast<void>(0))
+#define DOCTEST_FAIL_CHECK(...) (static_cast<void>(0))
+#define DOCTEST_FAIL(...) (static_cast<void>(0))
+
+#if defined(DOCTEST_CONFIG_EVALUATE_ASSERTS_EVEN_WHEN_DISABLED)                                    \
+ && defined(DOCTEST_CONFIG_ASSERTS_RETURN_VALUES)
+
+#define DOCTEST_WARN(...) [&] { return __VA_ARGS__; }()
+#define DOCTEST_CHECK(...) [&] { return __VA_ARGS__; }()
+#define DOCTEST_REQUIRE(...) [&] { return __VA_ARGS__; }()
+#define DOCTEST_WARN_FALSE(...) [&] { return !(__VA_ARGS__); }()
+#define DOCTEST_CHECK_FALSE(...) [&] { return !(__VA_ARGS__); }()
+#define DOCTEST_REQUIRE_FALSE(...) [&] { return !(__VA_ARGS__); }()
+
+#define DOCTEST_WARN_MESSAGE(cond, ...) [&] { return cond; }()
+#define DOCTEST_CHECK_MESSAGE(cond, ...) [&] { return cond; }()
+#define DOCTEST_REQUIRE_MESSAGE(cond, ...) [&] { return cond; }()
+#define DOCTEST_WARN_FALSE_MESSAGE(cond, ...) [&] { return !(cond); }()
+#define DOCTEST_CHECK_FALSE_MESSAGE(cond, ...) [&] { return !(cond); }()
+#define DOCTEST_REQUIRE_FALSE_MESSAGE(cond, ...) [&] { return !(cond); }()
+
+namespace doctest {
+namespace detail {
+#define DOCTEST_RELATIONAL_OP(name, op)                                                            \
+    template <typename L, typename R>                                                              \
+    bool name(const DOCTEST_REF_WRAP(L) lhs, const DOCTEST_REF_WRAP(R) rhs) { return lhs op rhs; }
+
+    DOCTEST_RELATIONAL_OP(eq, ==)
+    DOCTEST_RELATIONAL_OP(ne, !=)
+    DOCTEST_RELATIONAL_OP(lt, <)
+    DOCTEST_RELATIONAL_OP(gt, >)
+    DOCTEST_RELATIONAL_OP(le, <=)
+    DOCTEST_RELATIONAL_OP(ge, >=)
+} // namespace detail
+} // namespace doctest
+
+#define DOCTEST_WARN_EQ(...) [&] { return doctest::detail::eq(__VA_ARGS__); }()
+#define DOCTEST_CHECK_EQ(...) [&] { return doctest::detail::eq(__VA_ARGS__); }()
+#define DOCTEST_REQUIRE_EQ(...) [&] { return doctest::detail::eq(__VA_ARGS__); }()
+#define DOCTEST_WARN_NE(...) [&] { return doctest::detail::ne(__VA_ARGS__); }()
+#define DOCTEST_CHECK_NE(...) [&] { return doctest::detail::ne(__VA_ARGS__); }()
+#define DOCTEST_REQUIRE_NE(...) [&] { return doctest::detail::ne(__VA_ARGS__); }()
+#define DOCTEST_WARN_LT(...) [&] { return doctest::detail::lt(__VA_ARGS__); }()
+#define DOCTEST_CHECK_LT(...) [&] { return doctest::detail::lt(__VA_ARGS__); }()
+#define DOCTEST_REQUIRE_LT(...) [&] { return doctest::detail::lt(__VA_ARGS__); }()
+#define DOCTEST_WARN_GT(...) [&] { return doctest::detail::gt(__VA_ARGS__); }()
+#define DOCTEST_CHECK_GT(...) [&] { return doctest::detail::gt(__VA_ARGS__); }()
+#define DOCTEST_REQUIRE_GT(...) [&] { return doctest::detail::gt(__VA_ARGS__); }()
+#define DOCTEST_WARN_LE(...) [&] { return doctest::detail::le(__VA_ARGS__); }()
+#define DOCTEST_CHECK_LE(...) [&] { return doctest::detail::le(__VA_ARGS__); }()
+#define DOCTEST_REQUIRE_LE(...) [&] { return doctest::detail::le(__VA_ARGS__); }()
+#define DOCTEST_WARN_GE(...) [&] { return doctest::detail::ge(__VA_ARGS__); }()
+#define DOCTEST_CHECK_GE(...) [&] { return doctest::detail::ge(__VA_ARGS__); }()
+#define DOCTEST_REQUIRE_GE(...) [&] { return doctest::detail::ge(__VA_ARGS__); }()
+#define DOCTEST_WARN_UNARY(...) [&] { return __VA_ARGS__; }()
+#define DOCTEST_CHECK_UNARY(...) [&] { return __VA_ARGS__; }()
+#define DOCTEST_REQUIRE_UNARY(...) [&] { return __VA_ARGS__; }()
+#define DOCTEST_WARN_UNARY_FALSE(...) [&] { return !(__VA_ARGS__); }()
+#define DOCTEST_CHECK_UNARY_FALSE(...) [&] { return !(__VA_ARGS__); }()
+#define DOCTEST_REQUIRE_UNARY_FALSE(...) [&] { return !(__VA_ARGS__); }()
+
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+
+#define DOCTEST_WARN_THROWS_WITH(expr, with, ...) [] { static_assert(false, "Exception translation is not available when doctest is disabled."); return false; }()
+#define DOCTEST_CHECK_THROWS_WITH(expr, with, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_REQUIRE_THROWS_WITH(expr, with, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_WARN_THROWS_WITH_AS(expr, with, ex, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_CHECK_THROWS_WITH_AS(expr, with, ex, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_REQUIRE_THROWS_WITH_AS(expr, with, ex, ...) DOCTEST_WARN_THROWS_WITH(,,)
+
+#define DOCTEST_WARN_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_CHECK_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_REQUIRE_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_WARN_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_CHECK_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_WARN_THROWS_WITH(,,)
+#define DOCTEST_REQUIRE_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_WARN_THROWS_WITH(,,)
+
+#define DOCTEST_WARN_THROWS(...) [&] { try { __VA_ARGS__; return false; } catch (...) { return true; } }()
+#define DOCTEST_CHECK_THROWS(...) [&] { try { __VA_ARGS__; return false; } catch (...) { return true; } }()
+#define DOCTEST_REQUIRE_THROWS(...) [&] { try { __VA_ARGS__; return false; } catch (...) { return true; } }()
+#define DOCTEST_WARN_THROWS_AS(expr, ...) [&] { try { expr; } catch (__VA_ARGS__) { return true; } catch (...) { } return false; }()
+#define DOCTEST_CHECK_THROWS_AS(expr, ...) [&] { try { expr; } catch (__VA_ARGS__) { return true; } catch (...) { } return false; }()
+#define DOCTEST_REQUIRE_THROWS_AS(expr, ...) [&] { try { expr; } catch (__VA_ARGS__) { return true; } catch (...) { } return false; }()
+#define DOCTEST_WARN_NOTHROW(...) [&] { try { __VA_ARGS__; return true; } catch (...) { return false; } }()
+#define DOCTEST_CHECK_NOTHROW(...) [&] { try { __VA_ARGS__; return true; } catch (...) { return false; } }()
+#define DOCTEST_REQUIRE_NOTHROW(...) [&] { try { __VA_ARGS__; return true; } catch (...) { return false; } }()
+
+#define DOCTEST_WARN_THROWS_MESSAGE(expr, ...) [&] { try { __VA_ARGS__; return false; } catch (...) { return true; } }()
+#define DOCTEST_CHECK_THROWS_MESSAGE(expr, ...) [&] { try { __VA_ARGS__; return false; } catch (...) { return true; } }()
+#define DOCTEST_REQUIRE_THROWS_MESSAGE(expr, ...) [&] { try { __VA_ARGS__; return false; } catch (...) { return true; } }()
+#define DOCTEST_WARN_THROWS_AS_MESSAGE(expr, ex, ...) [&] { try { expr; } catch (__VA_ARGS__) { return true; } catch (...) { } return false; }()
+#define DOCTEST_CHECK_THROWS_AS_MESSAGE(expr, ex, ...) [&] { try { expr; } catch (__VA_ARGS__) { return true; } catch (...) { } return false; }()
+#define DOCTEST_REQUIRE_THROWS_AS_MESSAGE(expr, ex, ...) [&] { try { expr; } catch (__VA_ARGS__) { return true; } catch (...) { } return false; }()
+#define DOCTEST_WARN_NOTHROW_MESSAGE(expr, ...) [&] { try { __VA_ARGS__; return true; } catch (...) { return false; } }()
+#define DOCTEST_CHECK_NOTHROW_MESSAGE(expr, ...) [&] { try { __VA_ARGS__; return true; } catch (...) { return false; } }()
+#define DOCTEST_REQUIRE_NOTHROW_MESSAGE(expr, ...) [&] { try { __VA_ARGS__; return true; } catch (...) { return false; } }()
+
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+
+#else // DOCTEST_CONFIG_EVALUATE_ASSERTS_EVEN_WHEN_DISABLED
+
+#define DOCTEST_WARN(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_FALSE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_FALSE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_FALSE(...) DOCTEST_FUNC_EMPTY
+
+#define DOCTEST_WARN_MESSAGE(cond, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_MESSAGE(cond, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_MESSAGE(cond, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_FALSE_MESSAGE(cond, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_FALSE_MESSAGE(cond, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_FALSE_MESSAGE(cond, ...) DOCTEST_FUNC_EMPTY
+
+#define DOCTEST_WARN_EQ(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_EQ(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_EQ(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_NE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_NE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_NE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_GT(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_GT(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_GT(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_LT(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_LT(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_LT(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_GE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_GE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_GE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_LE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_LE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_LE(...) DOCTEST_FUNC_EMPTY
+
+#define DOCTEST_WARN_UNARY(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_UNARY(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_UNARY(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_UNARY_FALSE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_UNARY_FALSE(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_UNARY_FALSE(...) DOCTEST_FUNC_EMPTY
+
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+
+#define DOCTEST_WARN_THROWS(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_THROWS(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_THROWS(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_THROWS_AS(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_THROWS_AS(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_THROWS_AS(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_THROWS_WITH(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_THROWS_WITH(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_THROWS_WITH(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_THROWS_WITH_AS(expr, with, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_THROWS_WITH_AS(expr, with, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_THROWS_WITH_AS(expr, with, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_NOTHROW(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_NOTHROW(...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_NOTHROW(...) DOCTEST_FUNC_EMPTY
+
+#define DOCTEST_WARN_THROWS_MESSAGE(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_THROWS_MESSAGE(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_THROWS_MESSAGE(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_WARN_NOTHROW_MESSAGE(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_CHECK_NOTHROW_MESSAGE(expr, ...) DOCTEST_FUNC_EMPTY
+#define DOCTEST_REQUIRE_NOTHROW_MESSAGE(expr, ...) DOCTEST_FUNC_EMPTY
+
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+
+#endif // DOCTEST_CONFIG_EVALUATE_ASSERTS_EVEN_WHEN_DISABLED
+
+#endif // DOCTEST_CONFIG_DISABLE
+
+#ifdef DOCTEST_CONFIG_NO_EXCEPTIONS
+
+#ifdef DOCTEST_CONFIG_NO_EXCEPTIONS_BUT_WITH_ALL_ASSERTS
+#define DOCTEST_EXCEPTION_EMPTY_FUNC DOCTEST_FUNC_EMPTY
+#else // DOCTEST_CONFIG_NO_EXCEPTIONS_BUT_WITH_ALL_ASSERTS
+#define DOCTEST_EXCEPTION_EMPTY_FUNC [] { static_assert(false, "Exceptions are disabled! " \
+    "Use DOCTEST_CONFIG_NO_EXCEPTIONS_BUT_WITH_ALL_ASSERTS if you want to compile with exceptions disabled."); return false; }()
+
+#undef DOCTEST_REQUIRE
+#undef DOCTEST_REQUIRE_FALSE
+#undef DOCTEST_REQUIRE_MESSAGE
+#undef DOCTEST_REQUIRE_FALSE_MESSAGE
+#undef DOCTEST_REQUIRE_EQ
+#undef DOCTEST_REQUIRE_NE
+#undef DOCTEST_REQUIRE_GT
+#undef DOCTEST_REQUIRE_LT
+#undef DOCTEST_REQUIRE_GE
+#undef DOCTEST_REQUIRE_LE
+#undef DOCTEST_REQUIRE_UNARY
+#undef DOCTEST_REQUIRE_UNARY_FALSE
+
+#define DOCTEST_REQUIRE DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_FALSE DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_MESSAGE DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_FALSE_MESSAGE DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_EQ DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_NE DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_GT DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_LT DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_GE DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_LE DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_UNARY DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_UNARY_FALSE DOCTEST_EXCEPTION_EMPTY_FUNC
+
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS_BUT_WITH_ALL_ASSERTS
+
+#define DOCTEST_WARN_THROWS(...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_THROWS(...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_THROWS(...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_WARN_THROWS_AS(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_THROWS_AS(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_THROWS_AS(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_WARN_THROWS_WITH(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_THROWS_WITH(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_THROWS_WITH(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_WARN_THROWS_WITH_AS(expr, with, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_THROWS_WITH_AS(expr, with, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_THROWS_WITH_AS(expr, with, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_WARN_NOTHROW(...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_NOTHROW(...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_NOTHROW(...) DOCTEST_EXCEPTION_EMPTY_FUNC
+
+#define DOCTEST_WARN_THROWS_MESSAGE(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_THROWS_MESSAGE(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_THROWS_MESSAGE(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_WARN_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_WARN_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_WARN_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_WARN_NOTHROW_MESSAGE(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_CHECK_NOTHROW_MESSAGE(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+#define DOCTEST_REQUIRE_NOTHROW_MESSAGE(expr, ...) DOCTEST_EXCEPTION_EMPTY_FUNC
+
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+
+// clang-format off
+// KEPT FOR BACKWARDS COMPATIBILITY - FORWARDING TO THE RIGHT MACROS
+#define DOCTEST_FAST_WARN_EQ             DOCTEST_WARN_EQ
+#define DOCTEST_FAST_CHECK_EQ            DOCTEST_CHECK_EQ
+#define DOCTEST_FAST_REQUIRE_EQ          DOCTEST_REQUIRE_EQ
+#define DOCTEST_FAST_WARN_NE             DOCTEST_WARN_NE
+#define DOCTEST_FAST_CHECK_NE            DOCTEST_CHECK_NE
+#define DOCTEST_FAST_REQUIRE_NE          DOCTEST_REQUIRE_NE
+#define DOCTEST_FAST_WARN_GT             DOCTEST_WARN_GT
+#define DOCTEST_FAST_CHECK_GT            DOCTEST_CHECK_GT
+#define DOCTEST_FAST_REQUIRE_GT          DOCTEST_REQUIRE_GT
+#define DOCTEST_FAST_WARN_LT             DOCTEST_WARN_LT
+#define DOCTEST_FAST_CHECK_LT            DOCTEST_CHECK_LT
+#define DOCTEST_FAST_REQUIRE_LT          DOCTEST_REQUIRE_LT
+#define DOCTEST_FAST_WARN_GE             DOCTEST_WARN_GE
+#define DOCTEST_FAST_CHECK_GE            DOCTEST_CHECK_GE
+#define DOCTEST_FAST_REQUIRE_GE          DOCTEST_REQUIRE_GE
+#define DOCTEST_FAST_WARN_LE             DOCTEST_WARN_LE
+#define DOCTEST_FAST_CHECK_LE            DOCTEST_CHECK_LE
+#define DOCTEST_FAST_REQUIRE_LE          DOCTEST_REQUIRE_LE
+
+#define DOCTEST_FAST_WARN_UNARY          DOCTEST_WARN_UNARY
+#define DOCTEST_FAST_CHECK_UNARY         DOCTEST_CHECK_UNARY
+#define DOCTEST_FAST_REQUIRE_UNARY       DOCTEST_REQUIRE_UNARY
+#define DOCTEST_FAST_WARN_UNARY_FALSE    DOCTEST_WARN_UNARY_FALSE
+#define DOCTEST_FAST_CHECK_UNARY_FALSE   DOCTEST_CHECK_UNARY_FALSE
+#define DOCTEST_FAST_REQUIRE_UNARY_FALSE DOCTEST_REQUIRE_UNARY_FALSE
+
+#define DOCTEST_TEST_CASE_TEMPLATE_INSTANTIATE(id, ...) DOCTEST_TEST_CASE_TEMPLATE_INVOKE(id,__VA_ARGS__)
+// clang-format on
+
+// BDD style macros
+// clang-format off
+#define DOCTEST_SCENARIO(name) DOCTEST_TEST_CASE("  Scenario: " name)
+#define DOCTEST_SCENARIO_CLASS(name) DOCTEST_TEST_CASE_CLASS("  Scenario: " name)
+#define DOCTEST_SCENARIO_TEMPLATE(name, T, ...)  DOCTEST_TEST_CASE_TEMPLATE("  Scenario: " name, T, __VA_ARGS__)
+#define DOCTEST_SCENARIO_TEMPLATE_DEFINE(name, T, id) DOCTEST_TEST_CASE_TEMPLATE_DEFINE("  Scenario: " name, T, id)
+
+#define DOCTEST_GIVEN(name)     DOCTEST_SUBCASE("   Given: " name)
+#define DOCTEST_WHEN(name)      DOCTEST_SUBCASE("    When: " name)
+#define DOCTEST_AND_WHEN(name)  DOCTEST_SUBCASE("And when: " name)
+#define DOCTEST_THEN(name)      DOCTEST_SUBCASE("    Then: " name)
+#define DOCTEST_AND_THEN(name)  DOCTEST_SUBCASE("     And: " name)
+// clang-format on
+
+// == SHORT VERSIONS OF THE MACROS
+#ifndef DOCTEST_CONFIG_NO_SHORT_MACRO_NAMES
+
+#define TEST_CASE(name) DOCTEST_TEST_CASE(name)
+#define TEST_CASE_CLASS(name) DOCTEST_TEST_CASE_CLASS(name)
+#define TEST_CASE_FIXTURE(x, name) DOCTEST_TEST_CASE_FIXTURE(x, name)
+#define TYPE_TO_STRING_AS(str, ...) DOCTEST_TYPE_TO_STRING_AS(str, __VA_ARGS__)
+#define TYPE_TO_STRING(...) DOCTEST_TYPE_TO_STRING(__VA_ARGS__)
+#define TEST_CASE_TEMPLATE(name, T, ...) DOCTEST_TEST_CASE_TEMPLATE(name, T, __VA_ARGS__)
+#define TEST_CASE_TEMPLATE_DEFINE(name, T, id) DOCTEST_TEST_CASE_TEMPLATE_DEFINE(name, T, id)
+#define TEST_CASE_TEMPLATE_INVOKE(id, ...) DOCTEST_TEST_CASE_TEMPLATE_INVOKE(id, __VA_ARGS__)
+#define TEST_CASE_TEMPLATE_APPLY(id, ...) DOCTEST_TEST_CASE_TEMPLATE_APPLY(id, __VA_ARGS__)
+#define SUBCASE(name) DOCTEST_SUBCASE(name)
+#define TEST_SUITE(decorators) DOCTEST_TEST_SUITE(decorators)
+#define TEST_SUITE_BEGIN(name) DOCTEST_TEST_SUITE_BEGIN(name)
+#define TEST_SUITE_END DOCTEST_TEST_SUITE_END
+#define REGISTER_EXCEPTION_TRANSLATOR(signature) DOCTEST_REGISTER_EXCEPTION_TRANSLATOR(signature)
+#define REGISTER_REPORTER(name, priority, reporter) DOCTEST_REGISTER_REPORTER(name, priority, reporter)
+#define REGISTER_LISTENER(name, priority, reporter) DOCTEST_REGISTER_LISTENER(name, priority, reporter)
+#define INFO(...) DOCTEST_INFO(__VA_ARGS__)
+#define CAPTURE(x) DOCTEST_CAPTURE(x)
+#define ADD_MESSAGE_AT(file, line, ...) DOCTEST_ADD_MESSAGE_AT(file, line, __VA_ARGS__)
+#define ADD_FAIL_CHECK_AT(file, line, ...) DOCTEST_ADD_FAIL_CHECK_AT(file, line, __VA_ARGS__)
+#define ADD_FAIL_AT(file, line, ...) DOCTEST_ADD_FAIL_AT(file, line, __VA_ARGS__)
+#define MESSAGE(...) DOCTEST_MESSAGE(__VA_ARGS__)
+#define FAIL_CHECK(...) DOCTEST_FAIL_CHECK(__VA_ARGS__)
+#define FAIL(...) DOCTEST_FAIL(__VA_ARGS__)
+#define TO_LVALUE(...) DOCTEST_TO_LVALUE(__VA_ARGS__)
+
+#define WARN(...) DOCTEST_WARN(__VA_ARGS__)
+#define WARN_FALSE(...) DOCTEST_WARN_FALSE(__VA_ARGS__)
+#define WARN_THROWS(...) DOCTEST_WARN_THROWS(__VA_ARGS__)
+#define WARN_THROWS_AS(expr, ...) DOCTEST_WARN_THROWS_AS(expr, __VA_ARGS__)
+#define WARN_THROWS_WITH(expr, ...) DOCTEST_WARN_THROWS_WITH(expr, __VA_ARGS__)
+#define WARN_THROWS_WITH_AS(expr, with, ...) DOCTEST_WARN_THROWS_WITH_AS(expr, with, __VA_ARGS__)
+#define WARN_NOTHROW(...) DOCTEST_WARN_NOTHROW(__VA_ARGS__)
+#define CHECK(...) DOCTEST_CHECK(__VA_ARGS__)
+#define CHECK_FALSE(...) DOCTEST_CHECK_FALSE(__VA_ARGS__)
+#define CHECK_THROWS(...) DOCTEST_CHECK_THROWS(__VA_ARGS__)
+#define CHECK_THROWS_AS(expr, ...) DOCTEST_CHECK_THROWS_AS(expr, __VA_ARGS__)
+#define CHECK_THROWS_WITH(expr, ...) DOCTEST_CHECK_THROWS_WITH(expr, __VA_ARGS__)
+#define CHECK_THROWS_WITH_AS(expr, with, ...) DOCTEST_CHECK_THROWS_WITH_AS(expr, with, __VA_ARGS__)
+#define CHECK_NOTHROW(...) DOCTEST_CHECK_NOTHROW(__VA_ARGS__)
+#define REQUIRE(...) DOCTEST_REQUIRE(__VA_ARGS__)
+#define REQUIRE_FALSE(...) DOCTEST_REQUIRE_FALSE(__VA_ARGS__)
+#define REQUIRE_THROWS(...) DOCTEST_REQUIRE_THROWS(__VA_ARGS__)
+#define REQUIRE_THROWS_AS(expr, ...) DOCTEST_REQUIRE_THROWS_AS(expr, __VA_ARGS__)
+#define REQUIRE_THROWS_WITH(expr, ...) DOCTEST_REQUIRE_THROWS_WITH(expr, __VA_ARGS__)
+#define REQUIRE_THROWS_WITH_AS(expr, with, ...) DOCTEST_REQUIRE_THROWS_WITH_AS(expr, with, __VA_ARGS__)
+#define REQUIRE_NOTHROW(...) DOCTEST_REQUIRE_NOTHROW(__VA_ARGS__)
+
+#define WARN_MESSAGE(cond, ...) DOCTEST_WARN_MESSAGE(cond, __VA_ARGS__)
+#define WARN_FALSE_MESSAGE(cond, ...) DOCTEST_WARN_FALSE_MESSAGE(cond, __VA_ARGS__)
+#define WARN_THROWS_MESSAGE(expr, ...) DOCTEST_WARN_THROWS_MESSAGE(expr, __VA_ARGS__)
+#define WARN_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_WARN_THROWS_AS_MESSAGE(expr, ex, __VA_ARGS__)
+#define WARN_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_WARN_THROWS_WITH_MESSAGE(expr, with, __VA_ARGS__)
+#define WARN_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_WARN_THROWS_WITH_AS_MESSAGE(expr, with, ex, __VA_ARGS__)
+#define WARN_NOTHROW_MESSAGE(expr, ...) DOCTEST_WARN_NOTHROW_MESSAGE(expr, __VA_ARGS__)
+#define CHECK_MESSAGE(cond, ...) DOCTEST_CHECK_MESSAGE(cond, __VA_ARGS__)
+#define CHECK_FALSE_MESSAGE(cond, ...) DOCTEST_CHECK_FALSE_MESSAGE(cond, __VA_ARGS__)
+#define CHECK_THROWS_MESSAGE(expr, ...) DOCTEST_CHECK_THROWS_MESSAGE(expr, __VA_ARGS__)
+#define CHECK_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_CHECK_THROWS_AS_MESSAGE(expr, ex, __VA_ARGS__)
+#define CHECK_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_CHECK_THROWS_WITH_MESSAGE(expr, with, __VA_ARGS__)
+#define CHECK_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_CHECK_THROWS_WITH_AS_MESSAGE(expr, with, ex, __VA_ARGS__)
+#define CHECK_NOTHROW_MESSAGE(expr, ...) DOCTEST_CHECK_NOTHROW_MESSAGE(expr, __VA_ARGS__)
+#define REQUIRE_MESSAGE(cond, ...) DOCTEST_REQUIRE_MESSAGE(cond, __VA_ARGS__)
+#define REQUIRE_FALSE_MESSAGE(cond, ...) DOCTEST_REQUIRE_FALSE_MESSAGE(cond, __VA_ARGS__)
+#define REQUIRE_THROWS_MESSAGE(expr, ...) DOCTEST_REQUIRE_THROWS_MESSAGE(expr, __VA_ARGS__)
+#define REQUIRE_THROWS_AS_MESSAGE(expr, ex, ...) DOCTEST_REQUIRE_THROWS_AS_MESSAGE(expr, ex, __VA_ARGS__)
+#define REQUIRE_THROWS_WITH_MESSAGE(expr, with, ...) DOCTEST_REQUIRE_THROWS_WITH_MESSAGE(expr, with, __VA_ARGS__)
+#define REQUIRE_THROWS_WITH_AS_MESSAGE(expr, with, ex, ...) DOCTEST_REQUIRE_THROWS_WITH_AS_MESSAGE(expr, with, ex, __VA_ARGS__)
+#define REQUIRE_NOTHROW_MESSAGE(expr, ...) DOCTEST_REQUIRE_NOTHROW_MESSAGE(expr, __VA_ARGS__)
+
+#define SCENARIO(name) DOCTEST_SCENARIO(name)
+#define SCENARIO_CLASS(name) DOCTEST_SCENARIO_CLASS(name)
+#define SCENARIO_TEMPLATE(name, T, ...) DOCTEST_SCENARIO_TEMPLATE(name, T, __VA_ARGS__)
+#define SCENARIO_TEMPLATE_DEFINE(name, T, id) DOCTEST_SCENARIO_TEMPLATE_DEFINE(name, T, id)
+#define GIVEN(name) DOCTEST_GIVEN(name)
+#define WHEN(name) DOCTEST_WHEN(name)
+#define AND_WHEN(name) DOCTEST_AND_WHEN(name)
+#define THEN(name) DOCTEST_THEN(name)
+#define AND_THEN(name) DOCTEST_AND_THEN(name)
+
+#define WARN_EQ(...) DOCTEST_WARN_EQ(__VA_ARGS__)
+#define CHECK_EQ(...) DOCTEST_CHECK_EQ(__VA_ARGS__)
+#define REQUIRE_EQ(...) DOCTEST_REQUIRE_EQ(__VA_ARGS__)
+#define WARN_NE(...) DOCTEST_WARN_NE(__VA_ARGS__)
+#define CHECK_NE(...) DOCTEST_CHECK_NE(__VA_ARGS__)
+#define REQUIRE_NE(...) DOCTEST_REQUIRE_NE(__VA_ARGS__)
+#define WARN_GT(...) DOCTEST_WARN_GT(__VA_ARGS__)
+#define CHECK_GT(...) DOCTEST_CHECK_GT(__VA_ARGS__)
+#define REQUIRE_GT(...) DOCTEST_REQUIRE_GT(__VA_ARGS__)
+#define WARN_LT(...) DOCTEST_WARN_LT(__VA_ARGS__)
+#define CHECK_LT(...) DOCTEST_CHECK_LT(__VA_ARGS__)
+#define REQUIRE_LT(...) DOCTEST_REQUIRE_LT(__VA_ARGS__)
+#define WARN_GE(...) DOCTEST_WARN_GE(__VA_ARGS__)
+#define CHECK_GE(...) DOCTEST_CHECK_GE(__VA_ARGS__)
+#define REQUIRE_GE(...) DOCTEST_REQUIRE_GE(__VA_ARGS__)
+#define WARN_LE(...) DOCTEST_WARN_LE(__VA_ARGS__)
+#define CHECK_LE(...) DOCTEST_CHECK_LE(__VA_ARGS__)
+#define REQUIRE_LE(...) DOCTEST_REQUIRE_LE(__VA_ARGS__)
+#define WARN_UNARY(...) DOCTEST_WARN_UNARY(__VA_ARGS__)
+#define CHECK_UNARY(...) DOCTEST_CHECK_UNARY(__VA_ARGS__)
+#define REQUIRE_UNARY(...) DOCTEST_REQUIRE_UNARY(__VA_ARGS__)
+#define WARN_UNARY_FALSE(...) DOCTEST_WARN_UNARY_FALSE(__VA_ARGS__)
+#define CHECK_UNARY_FALSE(...) DOCTEST_CHECK_UNARY_FALSE(__VA_ARGS__)
+#define REQUIRE_UNARY_FALSE(...) DOCTEST_REQUIRE_UNARY_FALSE(__VA_ARGS__)
+
+// KEPT FOR BACKWARDS COMPATIBILITY
+#define FAST_WARN_EQ(...) DOCTEST_FAST_WARN_EQ(__VA_ARGS__)
+#define FAST_CHECK_EQ(...) DOCTEST_FAST_CHECK_EQ(__VA_ARGS__)
+#define FAST_REQUIRE_EQ(...) DOCTEST_FAST_REQUIRE_EQ(__VA_ARGS__)
+#define FAST_WARN_NE(...) DOCTEST_FAST_WARN_NE(__VA_ARGS__)
+#define FAST_CHECK_NE(...) DOCTEST_FAST_CHECK_NE(__VA_ARGS__)
+#define FAST_REQUIRE_NE(...) DOCTEST_FAST_REQUIRE_NE(__VA_ARGS__)
+#define FAST_WARN_GT(...) DOCTEST_FAST_WARN_GT(__VA_ARGS__)
+#define FAST_CHECK_GT(...) DOCTEST_FAST_CHECK_GT(__VA_ARGS__)
+#define FAST_REQUIRE_GT(...) DOCTEST_FAST_REQUIRE_GT(__VA_ARGS__)
+#define FAST_WARN_LT(...) DOCTEST_FAST_WARN_LT(__VA_ARGS__)
+#define FAST_CHECK_LT(...) DOCTEST_FAST_CHECK_LT(__VA_ARGS__)
+#define FAST_REQUIRE_LT(...) DOCTEST_FAST_REQUIRE_LT(__VA_ARGS__)
+#define FAST_WARN_GE(...) DOCTEST_FAST_WARN_GE(__VA_ARGS__)
+#define FAST_CHECK_GE(...) DOCTEST_FAST_CHECK_GE(__VA_ARGS__)
+#define FAST_REQUIRE_GE(...) DOCTEST_FAST_REQUIRE_GE(__VA_ARGS__)
+#define FAST_WARN_LE(...) DOCTEST_FAST_WARN_LE(__VA_ARGS__)
+#define FAST_CHECK_LE(...) DOCTEST_FAST_CHECK_LE(__VA_ARGS__)
+#define FAST_REQUIRE_LE(...) DOCTEST_FAST_REQUIRE_LE(__VA_ARGS__)
+
+#define FAST_WARN_UNARY(...) DOCTEST_FAST_WARN_UNARY(__VA_ARGS__)
+#define FAST_CHECK_UNARY(...) DOCTEST_FAST_CHECK_UNARY(__VA_ARGS__)
+#define FAST_REQUIRE_UNARY(...) DOCTEST_FAST_REQUIRE_UNARY(__VA_ARGS__)
+#define FAST_WARN_UNARY_FALSE(...) DOCTEST_FAST_WARN_UNARY_FALSE(__VA_ARGS__)
+#define FAST_CHECK_UNARY_FALSE(...) DOCTEST_FAST_CHECK_UNARY_FALSE(__VA_ARGS__)
+#define FAST_REQUIRE_UNARY_FALSE(...) DOCTEST_FAST_REQUIRE_UNARY_FALSE(__VA_ARGS__)
+
+#define TEST_CASE_TEMPLATE_INSTANTIATE(id, ...) DOCTEST_TEST_CASE_TEMPLATE_INSTANTIATE(id, __VA_ARGS__)
+
+#endif // DOCTEST_CONFIG_NO_SHORT_MACRO_NAMES
+
+#ifndef DOCTEST_CONFIG_DISABLE
+
+// this is here to clear the 'current test suite' for the current translation unit - at the top
+DOCTEST_TEST_SUITE_END();
+
+#endif // DOCTEST_CONFIG_DISABLE
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+DOCTEST_GCC_SUPPRESS_WARNING_POP
+
+DOCTEST_SUPPRESS_COMMON_WARNINGS_POP
+
+#endif // DOCTEST_LIBRARY_INCLUDED
+
+#ifndef DOCTEST_SINGLE_HEADER
+#define DOCTEST_SINGLE_HEADER
+#endif // DOCTEST_SINGLE_HEADER
+
+#if defined(DOCTEST_CONFIG_IMPLEMENT) || !defined(DOCTEST_SINGLE_HEADER)
+
+#ifndef DOCTEST_SINGLE_HEADER
+#include "doctest_fwd.h"
+#endif // DOCTEST_SINGLE_HEADER
+
+DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wunused-macros")
+
+#ifndef DOCTEST_LIBRARY_IMPLEMENTATION
+#define DOCTEST_LIBRARY_IMPLEMENTATION
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
+
+DOCTEST_SUPPRESS_COMMON_WARNINGS_PUSH
+
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wglobal-constructors")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wsign-conversion")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wshorten-64-to-32")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wmissing-variable-declarations")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wswitch")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wswitch-enum")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wcovered-switch-default")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wmissing-noreturn")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wdisabled-macro-expansion")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wmissing-braces")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wmissing-field-initializers")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wunused-member-function")
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wnonportable-system-include-path")
+
+DOCTEST_GCC_SUPPRESS_WARNING_PUSH
+DOCTEST_GCC_SUPPRESS_WARNING("-Wconversion")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wsign-conversion")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wmissing-field-initializers")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wmissing-braces")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wswitch")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wswitch-enum")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wswitch-default")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wunsafe-loop-optimizations")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wold-style-cast")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wunused-function")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wmultiple-inheritance")
+DOCTEST_GCC_SUPPRESS_WARNING("-Wsuggest-attribute")
+
+DOCTEST_MSVC_SUPPRESS_WARNING_PUSH
+DOCTEST_MSVC_SUPPRESS_WARNING(4267) // 'var' : conversion from 'x' to 'y', possible loss of data
+DOCTEST_MSVC_SUPPRESS_WARNING(4530) // C++ exception handler used, but unwind semantics not enabled
+DOCTEST_MSVC_SUPPRESS_WARNING(4577) // 'noexcept' used with no exception handling mode specified
+DOCTEST_MSVC_SUPPRESS_WARNING(4774) // format string expected in argument is not a string literal
+DOCTEST_MSVC_SUPPRESS_WARNING(4365) // conversion from 'int' to 'unsigned', signed/unsigned mismatch
+DOCTEST_MSVC_SUPPRESS_WARNING(5039) // pointer to potentially throwing function passed to extern C
+DOCTEST_MSVC_SUPPRESS_WARNING(4800) // forcing value to bool 'true' or 'false' (performance warning)
+DOCTEST_MSVC_SUPPRESS_WARNING(5245) // unreferenced function with internal linkage has been removed
+
+DOCTEST_MAKE_STD_HEADERS_CLEAN_FROM_WARNINGS_ON_WALL_BEGIN
+
+// required includes - will go only in one translation unit!
+#include <ctime>
+#include <cmath>
+#include <climits>
+// borland (Embarcadero) compiler requires math.h and not cmath - https://github.com/doctest/doctest/pull/37
+#ifdef __BORLANDC__
+#include <math.h>
+#endif // __BORLANDC__
+#include <new>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <limits>
+#include <utility>
+#include <fstream>
+#include <sstream>
+#ifndef DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+#include <iostream>
+#endif // DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+#include <algorithm>
+#include <iomanip>
+#include <vector>
+#ifndef DOCTEST_CONFIG_NO_MULTITHREADING
+#include <atomic>
+#include <mutex>
+#define DOCTEST_DECLARE_MUTEX(name) std::mutex name;
+#define DOCTEST_DECLARE_STATIC_MUTEX(name) static DOCTEST_DECLARE_MUTEX(name)
+#define DOCTEST_LOCK_MUTEX(name) std::lock_guard<std::mutex> DOCTEST_ANONYMOUS(DOCTEST_ANON_LOCK_)(name);
+#else // DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_DECLARE_MUTEX(name)
+#define DOCTEST_DECLARE_STATIC_MUTEX(name)
+#define DOCTEST_LOCK_MUTEX(name)
+#endif // DOCTEST_CONFIG_NO_MULTITHREADING
+#include <set>
+#include <map>
+#include <unordered_set>
+#include <exception>
+#include <stdexcept>
+#include <csignal>
+#include <cfloat>
+#include <cctype>
+#include <cstdint>
+#include <string>
+
+#ifdef DOCTEST_PLATFORM_MAC
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/sysctl.h>
+#endif // DOCTEST_PLATFORM_MAC
+
+#ifdef DOCTEST_PLATFORM_WINDOWS
+
+// defines for a leaner windows.h
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#define DOCTEST_UNDEF_WIN32_LEAN_AND_MEAN
+#endif // WIN32_LEAN_AND_MEAN
+#ifndef NOMINMAX
+#define NOMINMAX
+#define DOCTEST_UNDEF_NOMINMAX
+#endif // NOMINMAX
+
+// not sure what AfxWin.h is for - here I do what Catch does
+#ifdef __AFXDLL
+#include <AfxWin.h>
+#else
+#include <windows.h>
+#endif
+#include <io.h>
+
+#else // DOCTEST_PLATFORM_WINDOWS
+
+#include <sys/time.h>
+#include <unistd.h>
+
+#endif // DOCTEST_PLATFORM_WINDOWS
+
+// this is a fix for https://github.com/doctest/doctest/issues/348
+// https://mail.gnome.org/archives/xml/2012-January/msg00000.html
+#if !defined(HAVE_UNISTD_H) && !defined(STDOUT_FILENO)
+#define STDOUT_FILENO fileno(stdout)
+#endif // HAVE_UNISTD_H
+
+DOCTEST_MAKE_STD_HEADERS_CLEAN_FROM_WARNINGS_ON_WALL_END
+
+// counts the number of elements in a C array
+#define DOCTEST_COUNTOF(x) (sizeof(x) / sizeof(x[0]))
+
+#ifdef DOCTEST_CONFIG_DISABLE
+#define DOCTEST_BRANCH_ON_DISABLED(if_disabled, if_not_disabled) if_disabled
+#else // DOCTEST_CONFIG_DISABLE
+#define DOCTEST_BRANCH_ON_DISABLED(if_disabled, if_not_disabled) if_not_disabled
+#endif // DOCTEST_CONFIG_DISABLE
+
+#ifndef DOCTEST_CONFIG_OPTIONS_PREFIX
+#define DOCTEST_CONFIG_OPTIONS_PREFIX "dt-"
+#endif
+
+#ifndef DOCTEST_THREAD_LOCAL
+#if defined(DOCTEST_CONFIG_NO_MULTITHREADING) || DOCTEST_MSVC && (DOCTEST_MSVC < DOCTEST_COMPILER(19, 0, 0))
+#define DOCTEST_THREAD_LOCAL
+#else // DOCTEST_MSVC
+#define DOCTEST_THREAD_LOCAL thread_local
+#endif // DOCTEST_MSVC
+#endif // DOCTEST_THREAD_LOCAL
+
+#ifndef DOCTEST_MULTI_LANE_ATOMICS_THREAD_LANES
+#define DOCTEST_MULTI_LANE_ATOMICS_THREAD_LANES 32
+#endif
+
+#ifndef DOCTEST_MULTI_LANE_ATOMICS_CACHE_LINE_SIZE
+#define DOCTEST_MULTI_LANE_ATOMICS_CACHE_LINE_SIZE 64
+#endif
+
+#ifdef DOCTEST_CONFIG_NO_UNPREFIXED_OPTIONS
+#define DOCTEST_OPTIONS_PREFIX_DISPLAY DOCTEST_CONFIG_OPTIONS_PREFIX
+#else
+#define DOCTEST_OPTIONS_PREFIX_DISPLAY ""
+#endif
+
+#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_APP)
+#define DOCTEST_CONFIG_NO_MULTI_LANE_ATOMICS
+#endif
+
+#ifndef DOCTEST_CDECL
+#define DOCTEST_CDECL __cdecl
+#endif
+
+namespace doctest {
+
+bool is_running_in_test = false;
+
+namespace {
+    using namespace detail;
+
+    template <typename Ex>
+    DOCTEST_NORETURN void throw_exception(Ex const& e) {
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+        throw e;
+#else  // DOCTEST_CONFIG_NO_EXCEPTIONS
+#ifdef DOCTEST_CONFIG_HANDLE_EXCEPTION
+        DOCTEST_CONFIG_HANDLE_EXCEPTION(e);
+#else // DOCTEST_CONFIG_HANDLE_EXCEPTION
+#ifndef DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+        std::cerr << "doctest will terminate because it needed to throw an exception.\n"
+                  << "The message was: " << e.what() << '\n';
+#endif // DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+#endif // DOCTEST_CONFIG_HANDLE_EXCEPTION
+        std::terminate();
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+    }
+
+#ifndef DOCTEST_INTERNAL_ERROR
+#define DOCTEST_INTERNAL_ERROR(msg)                                                                \
+    throw_exception(std::logic_error(                                                              \
+            __FILE__ ":" DOCTEST_TOSTR(__LINE__) ": Internal doctest error: " msg))
+#endif // DOCTEST_INTERNAL_ERROR
+
+    // case insensitive strcmp
+    int stricmp(const char* a, const char* b) {
+        for(;; a++, b++) {
+            const int d = tolower(*a) - tolower(*b);
+            if(d != 0 || !*a)
+                return d;
+        }
+    }
+
+    struct Endianness
+    {
+        enum Arch
+        {
+            Big,
+            Little
+        };
+
+        static Arch which() {
+            int x = 1;
+            // casting any data pointer to char* is allowed
+            auto ptr = reinterpret_cast<char*>(&x);
+            if(*ptr)
+                return Little;
+            return Big;
+        }
+    };
+} // namespace
+
+namespace detail {
+    DOCTEST_THREAD_LOCAL class
+    {
+        std::vector<std::streampos> stack;
+        std::stringstream           ss;
+
+    public:
+        std::ostream* push() {
+            stack.push_back(ss.tellp());
+            return &ss;
+        }
+
+        String pop() {
+            if (stack.empty())
+                DOCTEST_INTERNAL_ERROR("TLSS was empty when trying to pop!");
+
+            std::streampos pos = stack.back();
+            stack.pop_back();
+            unsigned sz = static_cast<unsigned>(ss.tellp() - pos);
+            ss.rdbuf()->pubseekpos(pos, std::ios::in | std::ios::out);
+            return String(ss, sz);
+        }
+    } g_oss;
+
+    std::ostream* tlssPush() {
+        return g_oss.push();
+    }
+
+    String tlssPop() {
+        return g_oss.pop();
+    }
+
+#ifndef DOCTEST_CONFIG_DISABLE
+
+namespace timer_large_integer
+{
+
+#if defined(DOCTEST_PLATFORM_WINDOWS)
+    using type = ULONGLONG;
+#else // DOCTEST_PLATFORM_WINDOWS
+    using type = std::uint64_t;
+#endif // DOCTEST_PLATFORM_WINDOWS
+}
+
+using ticks_t = timer_large_integer::type;
+
+#ifdef DOCTEST_CONFIG_GETCURRENTTICKS
+    ticks_t getCurrentTicks() { return DOCTEST_CONFIG_GETCURRENTTICKS(); }
+#elif defined(DOCTEST_PLATFORM_WINDOWS)
+    ticks_t getCurrentTicks() {
+        static LARGE_INTEGER hz = { {0} }, hzo = { {0} };
+        if(!hz.QuadPart) {
+            QueryPerformanceFrequency(&hz);
+            QueryPerformanceCounter(&hzo);
+        }
+        LARGE_INTEGER t;
+        QueryPerformanceCounter(&t);
+        return ((t.QuadPart - hzo.QuadPart) * LONGLONG(1000000)) / hz.QuadPart;
+    }
+#else  // DOCTEST_PLATFORM_WINDOWS
+    ticks_t getCurrentTicks() {
+        timeval t;
+        gettimeofday(&t, nullptr);
+        return static_cast<ticks_t>(t.tv_sec) * 1000000 + static_cast<ticks_t>(t.tv_usec);
+    }
+#endif // DOCTEST_PLATFORM_WINDOWS
+
+    struct Timer
+    {
+        void         start() { m_ticks = getCurrentTicks(); }
+        unsigned int getElapsedMicroseconds() const {
+            return static_cast<unsigned int>(getCurrentTicks() - m_ticks);
+        }
+        //unsigned int getElapsedMilliseconds() const {
+        //    return static_cast<unsigned int>(getElapsedMicroseconds() / 1000);
+        //}
+        double getElapsedSeconds() const { return static_cast<double>(getCurrentTicks() - m_ticks) / 1000000.0; }
+
+    private:
+        ticks_t m_ticks = 0;
+    };
+
+#ifdef DOCTEST_CONFIG_NO_MULTITHREADING
+    template <typename T>
+    using Atomic = T;
+#else // DOCTEST_CONFIG_NO_MULTITHREADING
+    template <typename T>
+    using Atomic = std::atomic<T>;
+#endif // DOCTEST_CONFIG_NO_MULTITHREADING
+
+#if defined(DOCTEST_CONFIG_NO_MULTI_LANE_ATOMICS) || defined(DOCTEST_CONFIG_NO_MULTITHREADING)
+    template <typename T>
+    using MultiLaneAtomic = Atomic<T>;
+#else // DOCTEST_CONFIG_NO_MULTI_LANE_ATOMICS
+    // Provides a multilane implementation of an atomic variable that supports add, sub, load,
+    // store. Instead of using a single atomic variable, this splits up into multiple ones,
+    // each sitting on a separate cache line. The goal is to provide a speedup when most
+    // operations are modifying. It achieves this with two properties:
+    //
+    // * Multiple atomics are used, so chance of congestion from the same atomic is reduced.
+    // * Each atomic sits on a separate cache line, so false sharing is reduced.
+    //
+    // The disadvantage is that there is a small overhead due to the use of TLS, and load/store
+    // is slower because all atomics have to be accessed.
+    template <typename T>
+    class MultiLaneAtomic
+    {
+        struct CacheLineAlignedAtomic
+        {
+            Atomic<T> atomic{};
+            char padding[DOCTEST_MULTI_LANE_ATOMICS_CACHE_LINE_SIZE - sizeof(Atomic<T>)];
+        };
+        CacheLineAlignedAtomic m_atomics[DOCTEST_MULTI_LANE_ATOMICS_THREAD_LANES];
+
+        static_assert(sizeof(CacheLineAlignedAtomic) == DOCTEST_MULTI_LANE_ATOMICS_CACHE_LINE_SIZE,
+                      "guarantee one atomic takes exactly one cache line");
+
+    public:
+        T operator++() DOCTEST_NOEXCEPT { return fetch_add(1) + 1; }
+
+        T operator++(int) DOCTEST_NOEXCEPT { return fetch_add(1); }
+
+        T fetch_add(T arg, std::memory_order order = std::memory_order_seq_cst) DOCTEST_NOEXCEPT {
+            return myAtomic().fetch_add(arg, order);
+        }
+
+        T fetch_sub(T arg, std::memory_order order = std::memory_order_seq_cst) DOCTEST_NOEXCEPT {
+            return myAtomic().fetch_sub(arg, order);
+        }
+
+        operator T() const DOCTEST_NOEXCEPT { return load(); }
+
+        T load(std::memory_order order = std::memory_order_seq_cst) const DOCTEST_NOEXCEPT {
+            auto result = T();
+            for(auto const& c : m_atomics) {
+                result += c.atomic.load(order);
+            }
+            return result;
+        }
+
+        T operator=(T desired) DOCTEST_NOEXCEPT { // lgtm [cpp/assignment-does-not-return-this]
+            store(desired);
+            return desired;
+        }
+
+        void store(T desired, std::memory_order order = std::memory_order_seq_cst) DOCTEST_NOEXCEPT {
+            // first value becomes desired", all others become 0.
+            for(auto& c : m_atomics) {
+                c.atomic.store(desired, order);
+                desired = {};
+            }
+        }
+
+    private:
+        // Each thread has a different atomic that it operates on. If more than NumLanes threads
+        // use this, some will use the same atomic. So performance will degrade a bit, but still
+        // everything will work.
+        //
+        // The logic here is a bit tricky. The call should be as fast as possible, so that there
+        // is minimal to no overhead in determining the correct atomic for the current thread.
+        //
+        // 1. A global static counter laneCounter counts continuously up.
+        // 2. Each successive thread will use modulo operation of that counter so it gets an atomic
+        //    assigned in a round-robin fashion.
+        // 3. This tlsLaneIdx is stored in the thread local data, so it is directly available with
+        //    little overhead.
+        Atomic<T>& myAtomic() DOCTEST_NOEXCEPT {
+            static Atomic<size_t> laneCounter;
+            DOCTEST_THREAD_LOCAL size_t tlsLaneIdx =
+                    laneCounter++ % DOCTEST_MULTI_LANE_ATOMICS_THREAD_LANES;
+
+            return m_atomics[tlsLaneIdx].atomic;
+        }
+    };
+#endif // DOCTEST_CONFIG_NO_MULTI_LANE_ATOMICS
+
+    // this holds both parameters from the command line and runtime data for tests
+    struct ContextState : ContextOptions, TestRunStats, CurrentTestCaseStats
+    {
+        MultiLaneAtomic<int> numAssertsCurrentTest_atomic;
+        MultiLaneAtomic<int> numAssertsFailedCurrentTest_atomic;
+
+        std::vector<std::vector<String>> filters = decltype(filters)(9); // 9 different filters
+
+        std::vector<IReporter*> reporters_currently_used;
+
+        assert_handler ah = nullptr;
+
+        Timer timer;
+
+        std::vector<String> stringifiedContexts; // logging from INFO() due to an exception
+
+        // stuff for subcases
+        bool reachedLeaf;
+        std::vector<SubcaseSignature> subcaseStack;
+        std::vector<SubcaseSignature> nextSubcaseStack;
+        std::unordered_set<unsigned long long> fullyTraversedSubcases;
+        size_t currentSubcaseDepth;
+        Atomic<bool> shouldLogCurrentException;
+
+        void resetRunData() {
+            numTestCases                = 0;
+            numTestCasesPassingFilters  = 0;
+            numTestSuitesPassingFilters = 0;
+            numTestCasesFailed          = 0;
+            numAsserts                  = 0;
+            numAssertsFailed            = 0;
+            numAssertsCurrentTest       = 0;
+            numAssertsFailedCurrentTest = 0;
+        }
+
+        void finalizeTestCaseData() {
+            seconds = timer.getElapsedSeconds();
+
+            // update the non-atomic counters
+            numAsserts += numAssertsCurrentTest_atomic;
+            numAssertsFailed += numAssertsFailedCurrentTest_atomic;
+            numAssertsCurrentTest       = numAssertsCurrentTest_atomic;
+            numAssertsFailedCurrentTest = numAssertsFailedCurrentTest_atomic;
+
+            if(numAssertsFailedCurrentTest)
+                failure_flags |= TestCaseFailureReason::AssertFailure;
+
+            if(Approx(currentTest->m_timeout).epsilon(DBL_EPSILON) != 0 &&
+               Approx(seconds).epsilon(DBL_EPSILON) > currentTest->m_timeout)
+                failure_flags |= TestCaseFailureReason::Timeout;
+
+            if(currentTest->m_should_fail) {
+                if(failure_flags) {
+                    failure_flags |= TestCaseFailureReason::ShouldHaveFailedAndDid;
+                } else {
+                    failure_flags |= TestCaseFailureReason::ShouldHaveFailedButDidnt;
+                }
+            } else if(failure_flags && currentTest->m_may_fail) {
+                failure_flags |= TestCaseFailureReason::CouldHaveFailedAndDid;
+            } else if(currentTest->m_expected_failures > 0) {
+                if(numAssertsFailedCurrentTest == currentTest->m_expected_failures) {
+                    failure_flags |= TestCaseFailureReason::FailedExactlyNumTimes;
+                } else {
+                    failure_flags |= TestCaseFailureReason::DidntFailExactlyNumTimes;
+                }
+            }
+
+            bool ok_to_fail = (TestCaseFailureReason::ShouldHaveFailedAndDid & failure_flags) ||
+                              (TestCaseFailureReason::CouldHaveFailedAndDid & failure_flags) ||
+                              (TestCaseFailureReason::FailedExactlyNumTimes & failure_flags);
+
+            // if any subcase has failed - the whole test case has failed
+            testCaseSuccess = !(failure_flags && !ok_to_fail);
+            if(!testCaseSuccess)
+                numTestCasesFailed++;
+        }
+    };
+
+    ContextState* g_cs = nullptr;
+
+    // used to avoid locks for the debug output
+    // TODO: figure out if this is indeed necessary/correct - seems like either there still
+    // could be a race or that there wouldn't be a race even if using the context directly
+    DOCTEST_THREAD_LOCAL bool g_no_colors;
+
+#endif // DOCTEST_CONFIG_DISABLE
+} // namespace detail
+
+char* String::allocate(size_type sz) {
+    if (sz <= last) {
+        buf[sz] = '\0';
+        setLast(last - sz);
+        return buf;
+    } else {
+        setOnHeap();
+        data.size = sz;
+        data.capacity = data.size + 1;
+        data.ptr = new char[data.capacity];
+        data.ptr[sz] = '\0';
+        return data.ptr;
+    }
+}
+
+void String::setOnHeap() noexcept { *reinterpret_cast<unsigned char*>(&buf[last]) = 128; }
+void String::setLast(size_type in) noexcept { buf[last] = char(in); }
+void String::setSize(size_type sz) noexcept {
+    if (isOnStack()) { buf[sz] = '\0'; setLast(last - sz); }
+    else { data.ptr[sz] = '\0'; data.size = sz; }
+}
+
+void String::copy(const String& other) {
+    if(other.isOnStack()) {
+        memcpy(buf, other.buf, len);
+    } else {
+        memcpy(allocate(other.data.size), other.data.ptr, other.data.size);
+    }
+}
+
+String::String() noexcept {
+    buf[0] = '\0';
+    setLast();
+}
+
+String::~String() {
+    if(!isOnStack())
+        delete[] data.ptr;
+} // NOLINT(clang-analyzer-cplusplus.NewDeleteLeaks)
+
+String::String(const char* in)
+        : String(in, strlen(in)) {}
+
+String::String(const char* in, size_type in_size) {
+    memcpy(allocate(in_size), in, in_size);
+}
+
+String::String(std::istream& in, size_type in_size) {
+    in.read(allocate(in_size), in_size);
+}
+
+String::String(const String& other) { copy(other); }
+
+String& String::operator=(const String& other) {
+    if(this != &other) {
+        if(!isOnStack())
+            delete[] data.ptr;
+
+        copy(other);
+    }
+
+    return *this;
+}
+
+String& String::operator+=(const String& other) {
+    const size_type my_old_size = size();
+    const size_type other_size  = other.size();
+    const size_type total_size  = my_old_size + other_size;
+    if(isOnStack()) {
+        if(total_size < len) {
+            // append to the current stack space
+            memcpy(buf + my_old_size, other.c_str(), other_size + 1);
+            // NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks)
+            setLast(last - total_size);
+        } else {
+            // alloc new chunk
+            char* temp = new char[total_size + 1];
+            // copy current data to new location before writing in the union
+            memcpy(temp, buf, my_old_size); // skip the +1 ('\0') for speed
+            // update data in union
+            setOnHeap();
+            data.size     = total_size;
+            data.capacity = data.size + 1;
+            data.ptr      = temp;
+            // transfer the rest of the data
+            memcpy(data.ptr + my_old_size, other.c_str(), other_size + 1);
+        }
+    } else {
+        if(data.capacity > total_size) {
+            // append to the current heap block
+            data.size = total_size;
+            memcpy(data.ptr + my_old_size, other.c_str(), other_size + 1);
+        } else {
+            // resize
+            data.capacity *= 2;
+            if(data.capacity <= total_size)
+                data.capacity = total_size + 1;
+            // alloc new chunk
+            char* temp = new char[data.capacity];
+            // copy current data to new location before releasing it
+            memcpy(temp, data.ptr, my_old_size); // skip the +1 ('\0') for speed
+            // release old chunk
+            delete[] data.ptr;
+            // update the rest of the union members
+            data.size = total_size;
+            data.ptr  = temp;
+            // transfer the rest of the data
+            memcpy(data.ptr + my_old_size, other.c_str(), other_size + 1);
+        }
+    }
+
+    return *this;
+}
+
+String::String(String&& other) noexcept {
+    memcpy(buf, other.buf, len);
+    other.buf[0] = '\0';
+    other.setLast();
+}
+
+String& String::operator=(String&& other) noexcept {
+    if(this != &other) {
+        if(!isOnStack())
+            delete[] data.ptr;
+        memcpy(buf, other.buf, len);
+        other.buf[0] = '\0';
+        other.setLast();
+    }
+    return *this;
+}
+
+char String::operator[](size_type i) const {
+    return const_cast<String*>(this)->operator[](i);
+}
+
+char& String::operator[](size_type i) {
+    if(isOnStack())
+        return reinterpret_cast<char*>(buf)[i];
+    return data.ptr[i];
+}
+
+DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH("-Wmaybe-uninitialized")
+String::size_type String::size() const {
+    if(isOnStack())
+        return last - (size_type(buf[last]) & 31); // using "last" would work only if "len" is 32
+    return data.size;
+}
+DOCTEST_GCC_SUPPRESS_WARNING_POP
+
+String::size_type String::capacity() const {
+    if(isOnStack())
+        return len;
+    return data.capacity;
+}
+
+String String::substr(size_type pos, size_type cnt) && {
+    cnt = std::min(cnt, size() - 1 - pos);
+    char* cptr = c_str();
+    memmove(cptr, cptr + pos, cnt);
+    setSize(cnt);
+    return std::move(*this);
+}
+
+String String::substr(size_type pos, size_type cnt) const & {
+    cnt = std::min(cnt, size() - 1 - pos);
+    return String{ c_str() + pos, cnt };
+}
+
+String::size_type String::find(char ch, size_type pos) const {
+    const char* begin = c_str();
+    const char* end = begin + size();
+    const char* it = begin + pos;
+    for (; it < end && *it != ch; it++);
+    if (it < end) { return static_cast<size_type>(it - begin); }
+    else { return npos; }
+}
+
+String::size_type String::rfind(char ch, size_type pos) const {
+    const char* begin = c_str();
+    const char* it = begin + std::min(pos, size() - 1);
+    for (; it >= begin && *it != ch; it--);
+    if (it >= begin) { return static_cast<size_type>(it - begin); }
+    else { return npos; }
+}
+
+int String::compare(const char* other, bool no_case) const {
+    if(no_case)
+        return doctest::stricmp(c_str(), other);
+    return std::strcmp(c_str(), other);
+}
+
+int String::compare(const String& other, bool no_case) const {
+    return compare(other.c_str(), no_case);
+}
+
+String operator+(const String& lhs, const String& rhs) { return  String(lhs) += rhs; }
+
+bool operator==(const String& lhs, const String& rhs) { return lhs.compare(rhs) == 0; }
+bool operator!=(const String& lhs, const String& rhs) { return lhs.compare(rhs) != 0; }
+bool operator< (const String& lhs, const String& rhs) { return lhs.compare(rhs) < 0; }
+bool operator> (const String& lhs, const String& rhs) { return lhs.compare(rhs) > 0; }
+bool operator<=(const String& lhs, const String& rhs) { return (lhs != rhs) ? lhs.compare(rhs) < 0 : true; }
+bool operator>=(const String& lhs, const String& rhs) { return (lhs != rhs) ? lhs.compare(rhs) > 0 : true; }
+
+std::ostream& operator<<(std::ostream& s, const String& in) { return s << in.c_str(); }
+
+Contains::Contains(const String& str) : string(str) { }
+
+bool Contains::checkWith(const String& other) const {
+    return strstr(other.c_str(), string.c_str()) != nullptr;
+}
+
+String toString(const Contains& in) {
+    return "Contains( " + in.string + " )";
+}
+
+bool operator==(const String& lhs, const Contains& rhs) { return rhs.checkWith(lhs); }
+bool operator==(const Contains& lhs, const String& rhs) { return lhs.checkWith(rhs); }
+bool operator!=(const String& lhs, const Contains& rhs) { return !rhs.checkWith(lhs); }
+bool operator!=(const Contains& lhs, const String& rhs) { return !lhs.checkWith(rhs); }
+
+namespace {
+    void color_to_stream(std::ostream&, Color::Enum) DOCTEST_BRANCH_ON_DISABLED({}, ;)
+} // namespace
+
+namespace Color {
+    std::ostream& operator<<(std::ostream& s, Color::Enum code) {
+        color_to_stream(s, code);
+        return s;
+    }
+} // namespace Color
+
+// clang-format off
+const char* assertString(assertType::Enum at) {
+    DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4061) // enum 'x' in switch of enum 'y' is not explicitly handled
+    #define DOCTEST_GENERATE_ASSERT_TYPE_CASE(assert_type) case assertType::DT_ ## assert_type: return #assert_type
+    #define DOCTEST_GENERATE_ASSERT_TYPE_CASES(assert_type) \
+        DOCTEST_GENERATE_ASSERT_TYPE_CASE(WARN_ ## assert_type); \
+        DOCTEST_GENERATE_ASSERT_TYPE_CASE(CHECK_ ## assert_type); \
+        DOCTEST_GENERATE_ASSERT_TYPE_CASE(REQUIRE_ ## assert_type)
+    switch(at) {
+        DOCTEST_GENERATE_ASSERT_TYPE_CASE(WARN);
+        DOCTEST_GENERATE_ASSERT_TYPE_CASE(CHECK);
+        DOCTEST_GENERATE_ASSERT_TYPE_CASE(REQUIRE);
+
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(FALSE);
+
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(THROWS);
+
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(THROWS_AS);
+
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(THROWS_WITH);
+
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(THROWS_WITH_AS);
+
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(NOTHROW);
+
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(EQ);
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(NE);
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(GT);
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(LT);
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(GE);
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(LE);
+
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(UNARY);
+        DOCTEST_GENERATE_ASSERT_TYPE_CASES(UNARY_FALSE);
+
+        default: DOCTEST_INTERNAL_ERROR("Tried stringifying invalid assert type!");
+    }
+    DOCTEST_MSVC_SUPPRESS_WARNING_POP
+}
+// clang-format on
+
+const char* failureString(assertType::Enum at) {
+    if(at & assertType::is_warn) //!OCLINT bitwise operator in conditional
+        return "WARNING";
+    if(at & assertType::is_check) //!OCLINT bitwise operator in conditional
+        return "ERROR";
+    if(at & assertType::is_require) //!OCLINT bitwise operator in conditional
+        return "FATAL ERROR";
+    return "";
+}
+
+DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wnull-dereference")
+DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH("-Wnull-dereference")
+// depending on the current options this will remove the path of filenames
+const char* skipPathFromFilename(const char* file) {
+#ifndef DOCTEST_CONFIG_DISABLE
+    if(getContextOptions()->no_path_in_filenames) {
+        auto back    = std::strrchr(file, '\\');
+        auto forward = std::strrchr(file, '/');
+        if(back || forward) {
+            if(back > forward)
+                forward = back;
+            return forward + 1;
+        }
+    }
+#endif // DOCTEST_CONFIG_DISABLE
+    return file;
+}
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
+DOCTEST_GCC_SUPPRESS_WARNING_POP
+
+bool SubcaseSignature::operator==(const SubcaseSignature& other) const {
+    return m_line == other.m_line
+        && std::strcmp(m_file, other.m_file) == 0
+        && m_name == other.m_name;
+}
+
+bool SubcaseSignature::operator<(const SubcaseSignature& other) const {
+    if(m_line != other.m_line)
+        return m_line < other.m_line;
+    if(std::strcmp(m_file, other.m_file) != 0)
+        return std::strcmp(m_file, other.m_file) < 0;
+    return m_name.compare(other.m_name) < 0;
+}
+
+DOCTEST_DEFINE_INTERFACE(IContextScope)
+
+namespace detail {
+    void filldata<const void*>::fill(std::ostream* stream, const void* in) {
+        if (in) { *stream << in; }
+        else { *stream << "nullptr"; }
+    }
+
+    template <typename T>
+    String toStreamLit(T t) {
+        std::ostream* os = tlssPush();
+        os->operator<<(t);
+        return tlssPop();
+    }
+}
+
+#ifdef DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+String toString(const char* in) { return String("\"") + (in ? in : "{null string}") + "\""; }
+#endif // DOCTEST_CONFIG_TREAT_CHAR_STAR_AS_STRING
+
+#if DOCTEST_MSVC >= DOCTEST_COMPILER(19, 20, 0)
+// see this issue on why this is needed: https://github.com/doctest/doctest/issues/183
+String toString(const std::string& in) { return in.c_str(); }
+#endif // VS 2019
+
+String toString(String in) { return in; }
+
+String toString(std::nullptr_t) { return "nullptr"; }
+
+String toString(bool in) { return in ? "true" : "false"; }
+
+String toString(float in) { return toStreamLit(in); }
+String toString(double in) { return toStreamLit(in); }
+String toString(double long in) { return toStreamLit(in); }
+
+String toString(char in) { return toStreamLit(static_cast<signed>(in)); }
+String toString(char signed in) { return toStreamLit(static_cast<signed>(in)); }
+String toString(char unsigned in) { return toStreamLit(static_cast<unsigned>(in)); }
+String toString(short in) { return toStreamLit(in); }
+String toString(short unsigned in) { return toStreamLit(in); }
+String toString(signed in) { return toStreamLit(in); }
+String toString(unsigned in) { return toStreamLit(in); }
+String toString(long in) { return toStreamLit(in); }
+String toString(long unsigned in) { return toStreamLit(in); }
+String toString(long long in) { return toStreamLit(in); }
+String toString(long long unsigned in) { return toStreamLit(in); }
+
+Approx::Approx(double value)
+        : m_epsilon(static_cast<double>(std::numeric_limits<float>::epsilon()) * 100)
+        , m_scale(1.0)
+        , m_value(value) {}
+
+Approx Approx::operator()(double value) const {
+    Approx approx(value);
+    approx.epsilon(m_epsilon);
+    approx.scale(m_scale);
+    return approx;
+}
+
+Approx& Approx::epsilon(double newEpsilon) {
+    m_epsilon = newEpsilon;
+    return *this;
+}
+Approx& Approx::scale(double newScale) {
+    m_scale = newScale;
+    return *this;
+}
+
+bool operator==(double lhs, const Approx& rhs) {
+    // Thanks to Richard Harris for his help refining this formula
+    return std::fabs(lhs - rhs.m_value) <
+           rhs.m_epsilon * (rhs.m_scale + std::max<double>(std::fabs(lhs), std::fabs(rhs.m_value)));
+}
+bool operator==(const Approx& lhs, double rhs) { return operator==(rhs, lhs); }
+bool operator!=(double lhs, const Approx& rhs) { return !operator==(lhs, rhs); }
+bool operator!=(const Approx& lhs, double rhs) { return !operator==(rhs, lhs); }
+bool operator<=(double lhs, const Approx& rhs) { return lhs < rhs.m_value || lhs == rhs; }
+bool operator<=(const Approx& lhs, double rhs) { return lhs.m_value < rhs || lhs == rhs; }
+bool operator>=(double lhs, const Approx& rhs) { return lhs > rhs.m_value || lhs == rhs; }
+bool operator>=(const Approx& lhs, double rhs) { return lhs.m_value > rhs || lhs == rhs; }
+bool operator<(double lhs, const Approx& rhs) { return lhs < rhs.m_value && lhs != rhs; }
+bool operator<(const Approx& lhs, double rhs) { return lhs.m_value < rhs && lhs != rhs; }
+bool operator>(double lhs, const Approx& rhs) { return lhs > rhs.m_value && lhs != rhs; }
+bool operator>(const Approx& lhs, double rhs) { return lhs.m_value > rhs && lhs != rhs; }
+
+String toString(const Approx& in) {
+    return "Approx( " + doctest::toString(in.m_value) + " )";
+}
+const ContextOptions* getContextOptions() { return DOCTEST_BRANCH_ON_DISABLED(nullptr, g_cs); }
+
+DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4738)
+template <typename F>
+IsNaN<F>::operator bool() const {
+    return std::isnan(value) ^ flipped;
+}
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+template struct DOCTEST_INTERFACE_DEF IsNaN<float>;
+template struct DOCTEST_INTERFACE_DEF IsNaN<double>;
+template struct DOCTEST_INTERFACE_DEF IsNaN<long double>;
+template <typename F>
+String toString(IsNaN<F> in) { return String(in.flipped ? "! " : "") + "IsNaN( " + doctest::toString(in.value) + " )"; }
+String toString(IsNaN<float> in) { return toString<float>(in); }
+String toString(IsNaN<double> in) { return toString<double>(in); }
+String toString(IsNaN<double long> in) { return toString<double long>(in); }
+
+} // namespace doctest
+
+#ifdef DOCTEST_CONFIG_DISABLE
+namespace doctest {
+Context::Context(int, const char* const*) {}
+Context::~Context() = default;
+void Context::applyCommandLine(int, const char* const*) {}
+void Context::addFilter(const char*, const char*) {}
+void Context::clearFilters() {}
+void Context::setOption(const char*, bool) {}
+void Context::setOption(const char*, int) {}
+void Context::setOption(const char*, const char*) {}
+bool Context::shouldExit() { return false; }
+void Context::setAsDefaultForAssertsOutOfTestCases() {}
+void Context::setAssertHandler(detail::assert_handler) {}
+void Context::setCout(std::ostream*) {}
+int  Context::run() { return 0; }
+
+int                         IReporter::get_num_active_contexts() { return 0; }
+const IContextScope* const* IReporter::get_active_contexts() { return nullptr; }
+int                         IReporter::get_num_stringified_contexts() { return 0; }
+const String*               IReporter::get_stringified_contexts() { return nullptr; }
+
+int registerReporter(const char*, int, IReporter*) { return 0; }
+
+} // namespace doctest
+#else // DOCTEST_CONFIG_DISABLE
+
+#if !defined(DOCTEST_CONFIG_COLORS_NONE)
+#if !defined(DOCTEST_CONFIG_COLORS_WINDOWS) && !defined(DOCTEST_CONFIG_COLORS_ANSI)
+#ifdef DOCTEST_PLATFORM_WINDOWS
+#define DOCTEST_CONFIG_COLORS_WINDOWS
+#else // linux
+#define DOCTEST_CONFIG_COLORS_ANSI
+#endif // platform
+#endif // DOCTEST_CONFIG_COLORS_WINDOWS && DOCTEST_CONFIG_COLORS_ANSI
+#endif // DOCTEST_CONFIG_COLORS_NONE
+
+namespace doctest_detail_test_suite_ns {
+// holds the current test suite
+doctest::detail::TestSuite& getCurrentTestSuite() {
+    static doctest::detail::TestSuite data{};
+    return data;
+}
+} // namespace doctest_detail_test_suite_ns
+
+namespace doctest {
+namespace {
+    // the int (priority) is part of the key for automatic sorting - sadly one can register a
+    // reporter with a duplicate name and a different priority but hopefully that won't happen often :|
+    using reporterMap = std::map<std::pair<int, String>, reporterCreatorFunc>;
+
+    reporterMap& getReporters() {
+        static reporterMap data;
+        return data;
+    }
+    reporterMap& getListeners() {
+        static reporterMap data;
+        return data;
+    }
+} // namespace
+namespace detail {
+#define DOCTEST_ITERATE_THROUGH_REPORTERS(function, ...)                                           \
+    for(auto& curr_rep : g_cs->reporters_currently_used)                                           \
+    curr_rep->function(__VA_ARGS__)
+
+    bool checkIfShouldThrow(assertType::Enum at) {
+        if(at & assertType::is_require) //!OCLINT bitwise operator in conditional
+            return true;
+
+        if((at & assertType::is_check) //!OCLINT bitwise operator in conditional
+           && getContextOptions()->abort_after > 0 &&
+           (g_cs->numAssertsFailed + g_cs->numAssertsFailedCurrentTest_atomic) >=
+                   getContextOptions()->abort_after)
+            return true;
+
+        return false;
+    }
+
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+    DOCTEST_NORETURN void throwException() {
+        g_cs->shouldLogCurrentException = false;
+        throw TestFailureException(); // NOLINT(hicpp-exception-baseclass)
+    }
+#else // DOCTEST_CONFIG_NO_EXCEPTIONS
+    void throwException() {}
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+} // namespace detail
+
+namespace {
+    using namespace detail;
+    // matching of a string against a wildcard mask (case sensitivity configurable) taken from
+    // https://www.codeproject.com/Articles/1088/Wildcard-string-compare-globbing
+    int wildcmp(const char* str, const char* wild, bool caseSensitive) {
+        const char* cp = str;
+        const char* mp = wild;
+
+        while((*str) && (*wild != '*')) {
+            if((caseSensitive ? (*wild != *str) : (tolower(*wild) != tolower(*str))) &&
+               (*wild != '?')) {
+                return 0;
+            }
+            wild++;
+            str++;
+        }
+
+        while(*str) {
+            if(*wild == '*') {
+                if(!*++wild) {
+                    return 1;
+                }
+                mp = wild;
+                cp = str + 1;
+            } else if((caseSensitive ? (*wild == *str) : (tolower(*wild) == tolower(*str))) ||
+                      (*wild == '?')) {
+                wild++;
+                str++;
+            } else {
+                wild = mp;   //!OCLINT parameter reassignment
+                str  = cp++; //!OCLINT parameter reassignment
+            }
+        }
+
+        while(*wild == '*') {
+            wild++;
+        }
+        return !*wild;
+    }
+
+    // checks if the name matches any of the filters (and can be configured what to do when empty)
+    bool matchesAny(const char* name, const std::vector<String>& filters, bool matchEmpty,
+        bool caseSensitive) {
+        if (filters.empty() && matchEmpty)
+            return true;
+        for (auto& curr : filters)
+            if (wildcmp(name, curr.c_str(), caseSensitive))
+                return true;
+        return false;
+    }
+
+    DOCTEST_NO_SANITIZE_INTEGER
+    unsigned long long hash(unsigned long long a, unsigned long long b) {
+        return (a << 5) + b;
+    }
+
+    // C string hash function (djb2) - taken from http://www.cse.yorku.ca/~oz/hash.html
+    DOCTEST_NO_SANITIZE_INTEGER
+    unsigned long long hash(const char* str) {
+        unsigned long long hash = 5381;
+        char c;
+        while ((c = *str++))
+            hash = ((hash << 5) + hash) + c; // hash * 33 + c
+        return hash;
+    }
+
+    unsigned long long hash(const SubcaseSignature& sig) {
+        return hash(hash(hash(sig.m_file), hash(sig.m_name.c_str())), sig.m_line);
+    }
+
+    unsigned long long hash(const std::vector<SubcaseSignature>& sigs, size_t count) {
+        unsigned long long running = 0;
+        auto end = sigs.begin() + count;
+        for (auto it = sigs.begin(); it != end; it++) {
+            running = hash(running, hash(*it));
+        }
+        return running;
+    }
+
+    unsigned long long hash(const std::vector<SubcaseSignature>& sigs) {
+        unsigned long long running = 0;
+        for (const SubcaseSignature& sig : sigs) {
+            running = hash(running, hash(sig));
+        }
+        return running;
+    }
+} // namespace
+namespace detail {
+    bool Subcase::checkFilters() {
+        if (g_cs->subcaseStack.size() < size_t(g_cs->subcase_filter_levels)) {
+            if (!matchesAny(m_signature.m_name.c_str(), g_cs->filters[6], true, g_cs->case_sensitive))
+                return true;
+            if (matchesAny(m_signature.m_name.c_str(), g_cs->filters[7], false, g_cs->case_sensitive))
+                return true;
+        }
+        return false;
+    }
+
+    Subcase::Subcase(const String& name, const char* file, int line)
+            : m_signature({name, file, line}) {
+        if (!g_cs->reachedLeaf) {
+            if (g_cs->nextSubcaseStack.size() <= g_cs->subcaseStack.size()
+                || g_cs->nextSubcaseStack[g_cs->subcaseStack.size()] == m_signature) {
+                // Going down.
+                if (checkFilters()) { return; }
+
+                g_cs->subcaseStack.push_back(m_signature);
+                g_cs->currentSubcaseDepth++;
+                m_entered = true;
+                DOCTEST_ITERATE_THROUGH_REPORTERS(subcase_start, m_signature);
+            }
+        } else {
+            if (g_cs->subcaseStack[g_cs->currentSubcaseDepth] == m_signature) {
+                // This subcase is reentered via control flow.
+                g_cs->currentSubcaseDepth++;
+                m_entered = true;
+                DOCTEST_ITERATE_THROUGH_REPORTERS(subcase_start, m_signature);
+            } else if (g_cs->nextSubcaseStack.size() <= g_cs->currentSubcaseDepth
+                    && g_cs->fullyTraversedSubcases.find(hash(hash(g_cs->subcaseStack, g_cs->currentSubcaseDepth), hash(m_signature)))
+                    == g_cs->fullyTraversedSubcases.end()) {
+                if (checkFilters()) { return; }
+                // This subcase is part of the one to be executed next.
+                g_cs->nextSubcaseStack.clear();
+                g_cs->nextSubcaseStack.insert(g_cs->nextSubcaseStack.end(),
+                    g_cs->subcaseStack.begin(), g_cs->subcaseStack.begin() + g_cs->currentSubcaseDepth);
+                g_cs->nextSubcaseStack.push_back(m_signature);
+            }
+        }
+    }
+
+    DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4996) // std::uncaught_exception is deprecated in C++17
+    DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH("-Wdeprecated-declarations")
+    DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wdeprecated-declarations")
+
+    Subcase::~Subcase() {
+        if (m_entered) {
+            g_cs->currentSubcaseDepth--;
+
+            if (!g_cs->reachedLeaf) {
+                // Leaf.
+                g_cs->fullyTraversedSubcases.insert(hash(g_cs->subcaseStack));
+                g_cs->nextSubcaseStack.clear();
+                g_cs->reachedLeaf = true;
+            } else if (g_cs->nextSubcaseStack.empty()) {
+                // All children are finished.
+                g_cs->fullyTraversedSubcases.insert(hash(g_cs->subcaseStack));
+            }
+
+#if defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411L && (!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200)
+            if(std::uncaught_exceptions() > 0
+#else
+            if(std::uncaught_exception()
+#endif
+                && g_cs->shouldLogCurrentException) {
+                DOCTEST_ITERATE_THROUGH_REPORTERS(
+                        test_case_exception, {"exception thrown in subcase - will translate later "
+                                                "when the whole test case has been exited (cannot "
+                                                "translate while there is an active exception)",
+                                                false});
+                g_cs->shouldLogCurrentException = false;
+            }
+
+            DOCTEST_ITERATE_THROUGH_REPORTERS(subcase_end, DOCTEST_EMPTY);
+        }
+    }
+
+    DOCTEST_CLANG_SUPPRESS_WARNING_POP
+    DOCTEST_GCC_SUPPRESS_WARNING_POP
+    DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+    Subcase::operator bool() const { return m_entered; }
+
+    Result::Result(bool passed, const String& decomposition)
+            : m_passed(passed)
+            , m_decomp(decomposition) {}
+
+    ExpressionDecomposer::ExpressionDecomposer(assertType::Enum at)
+            : m_at(at) {}
+
+    TestSuite& TestSuite::operator*(const char* in) {
+        m_test_suite = in;
+        return *this;
+    }
+
+    TestCase::TestCase(funcType test, const char* file, unsigned line, const TestSuite& test_suite,
+                       const String& type, int template_id) {
+        m_file              = file;
+        m_line              = line;
+        m_name              = nullptr; // will be later overridden in operator*
+        m_test_suite        = test_suite.m_test_suite;
+        m_description       = test_suite.m_description;
+        m_skip              = test_suite.m_skip;
+        m_no_breaks         = test_suite.m_no_breaks;
+        m_no_output         = test_suite.m_no_output;
+        m_may_fail          = test_suite.m_may_fail;
+        m_should_fail       = test_suite.m_should_fail;
+        m_expected_failures = test_suite.m_expected_failures;
+        m_timeout           = test_suite.m_timeout;
+
+        m_test        = test;
+        m_type        = type;
+        m_template_id = template_id;
+    }
+
+    TestCase::TestCase(const TestCase& other)
+            : TestCaseData() {
+        *this = other;
+    }
+
+    DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(26434) // hides a non-virtual function
+    TestCase& TestCase::operator=(const TestCase& other) {
+        TestCaseData::operator=(other);
+        m_test        = other.m_test;
+        m_type        = other.m_type;
+        m_template_id = other.m_template_id;
+        m_full_name   = other.m_full_name;
+
+        if(m_template_id != -1)
+            m_name = m_full_name.c_str();
+        return *this;
+    }
+    DOCTEST_MSVC_SUPPRESS_WARNING_POP
+
+    TestCase& TestCase::operator*(const char* in) {
+        m_name = in;
+        // make a new name with an appended type for templated test case
+        if(m_template_id != -1) {
+            m_full_name = String(m_name) + "<" + m_type + ">";
+            // redirect the name to point to the newly constructed full name
+            m_name = m_full_name.c_str();
+        }
+        return *this;
+    }
+
+    bool TestCase::operator<(const TestCase& other) const {
+        // this will be used only to differentiate between test cases - not relevant for sorting
+        if(m_line != other.m_line)
+            return m_line < other.m_line;
+        const int name_cmp = strcmp(m_name, other.m_name);
+        if(name_cmp != 0)
+            return name_cmp < 0;
+        const int file_cmp = m_file.compare(other.m_file);
+        if(file_cmp != 0)
+            return file_cmp < 0;
+        return m_template_id < other.m_template_id;
+    }
+
+    // all the registered tests
+    std::set<TestCase>& getRegisteredTests() {
+        static std::set<TestCase> data;
+        return data;
+    }
+} // namespace detail
+namespace {
+    using namespace detail;
+    // for sorting tests by file/line
+    bool fileOrderComparator(const TestCase* lhs, const TestCase* rhs) {
+        // this is needed because MSVC gives different case for drive letters
+        // for __FILE__ when evaluated in a header and a source file
+        const int res = lhs->m_file.compare(rhs->m_file, bool(DOCTEST_MSVC));
+        if(res != 0)
+            return res < 0;
+        if(lhs->m_line != rhs->m_line)
+            return lhs->m_line < rhs->m_line;
+        return lhs->m_template_id < rhs->m_template_id;
+    }
+
+    // for sorting tests by suite/file/line
+    bool suiteOrderComparator(const TestCase* lhs, const TestCase* rhs) {
+        const int res = std::strcmp(lhs->m_test_suite, rhs->m_test_suite);
+        if(res != 0)
+            return res < 0;
+        return fileOrderComparator(lhs, rhs);
+    }
+
+    // for sorting tests by name/suite/file/line
+    bool nameOrderComparator(const TestCase* lhs, const TestCase* rhs) {
+        const int res = std::strcmp(lhs->m_name, rhs->m_name);
+        if(res != 0)
+            return res < 0;
+        return suiteOrderComparator(lhs, rhs);
+    }
+
+    DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wdeprecated-declarations")
+    void color_to_stream(std::ostream& s, Color::Enum code) {
+        static_cast<void>(s);    // for DOCTEST_CONFIG_COLORS_NONE or DOCTEST_CONFIG_COLORS_WINDOWS
+        static_cast<void>(code); // for DOCTEST_CONFIG_COLORS_NONE
+#ifdef DOCTEST_CONFIG_COLORS_ANSI
+        if(g_no_colors ||
+           (isatty(STDOUT_FILENO) == false && getContextOptions()->force_colors == false))
+            return;
+
+        auto col = "";
+        // clang-format off
+            switch(code) { //!OCLINT missing break in switch statement / unnecessary default statement in covered switch statement
+                case Color::Red:         col = "[0;31m"; break;
+                case Color::Green:       col = "[0;32m"; break;
+                case Color::Blue:        col = "[0;34m"; break;
+                case Color::Cyan:        col = "[0;36m"; break;
+                case Color::Yellow:      col = "[0;33m"; break;
+                case Color::Grey:        col = "[1;30m"; break;
+                case Color::LightGrey:   col = "[0;37m"; break;
+                case Color::BrightRed:   col = "[1;31m"; break;
+                case Color::BrightGreen: col = "[1;32m"; break;
+                case Color::BrightWhite: col = "[1;37m"; break;
+                case Color::Bright: // invalid
+                case Color::None:
+                case Color::White:
+                default:                 col = "[0m";
+            }
+        // clang-format on
+        s << "\033" << col;
+#endif // DOCTEST_CONFIG_COLORS_ANSI
+
+#ifdef DOCTEST_CONFIG_COLORS_WINDOWS
+        if(g_no_colors ||
+           (_isatty(_fileno(stdout)) == false && getContextOptions()->force_colors == false))
+            return;
+
+        static struct ConsoleHelper {
+            HANDLE stdoutHandle;
+            WORD   origFgAttrs;
+            WORD   origBgAttrs;
+
+            ConsoleHelper() {
+                stdoutHandle = GetStdHandle(STD_OUTPUT_HANDLE);
+                CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
+                GetConsoleScreenBufferInfo(stdoutHandle, &csbiInfo);
+                origFgAttrs = csbiInfo.wAttributes & ~(BACKGROUND_GREEN | BACKGROUND_RED |
+                    BACKGROUND_BLUE | BACKGROUND_INTENSITY);
+                origBgAttrs = csbiInfo.wAttributes & ~(FOREGROUND_GREEN | FOREGROUND_RED |
+                    FOREGROUND_BLUE | FOREGROUND_INTENSITY);
+            }
+        } ch;
+
+#define DOCTEST_SET_ATTR(x) SetConsoleTextAttribute(ch.stdoutHandle, x | ch.origBgAttrs)
+
+        // clang-format off
+        switch (code) {
+            case Color::White:       DOCTEST_SET_ATTR(FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE); break;
+            case Color::Red:         DOCTEST_SET_ATTR(FOREGROUND_RED);                                      break;
+            case Color::Green:       DOCTEST_SET_ATTR(FOREGROUND_GREEN);                                    break;
+            case Color::Blue:        DOCTEST_SET_ATTR(FOREGROUND_BLUE);                                     break;
+            case Color::Cyan:        DOCTEST_SET_ATTR(FOREGROUND_BLUE | FOREGROUND_GREEN);                  break;
+            case Color::Yellow:      DOCTEST_SET_ATTR(FOREGROUND_RED | FOREGROUND_GREEN);                   break;
+            case Color::Grey:        DOCTEST_SET_ATTR(0);                                                   break;
+            case Color::LightGrey:   DOCTEST_SET_ATTR(FOREGROUND_INTENSITY);                                break;
+            case Color::BrightRed:   DOCTEST_SET_ATTR(FOREGROUND_INTENSITY | FOREGROUND_RED);               break;
+            case Color::BrightGreen: DOCTEST_SET_ATTR(FOREGROUND_INTENSITY | FOREGROUND_GREEN);             break;
+            case Color::BrightWhite: DOCTEST_SET_ATTR(FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE); break;
+            case Color::None:
+            case Color::Bright: // invalid
+            default:                 DOCTEST_SET_ATTR(ch.origFgAttrs);
+        }
+            // clang-format on
+#endif // DOCTEST_CONFIG_COLORS_WINDOWS
+    }
+    DOCTEST_CLANG_SUPPRESS_WARNING_POP
+
+    std::vector<const IExceptionTranslator*>& getExceptionTranslators() {
+        static std::vector<const IExceptionTranslator*> data;
+        return data;
+    }
+
+    String translateActiveException() {
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+        String res;
+        auto&  translators = getExceptionTranslators();
+        for(auto& curr : translators)
+            if(curr->translate(res))
+                return res;
+        // clang-format off
+        DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH("-Wcatch-value")
+        try {
+            throw;
+        } catch(std::exception& ex) {
+            return ex.what();
+        } catch(std::string& msg) {
+            return msg.c_str();
+        } catch(const char* msg) {
+            return msg;
+        } catch(...) {
+            return "unknown exception";
+        }
+        DOCTEST_GCC_SUPPRESS_WARNING_POP
+// clang-format on
+#else  // DOCTEST_CONFIG_NO_EXCEPTIONS
+        return "";
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+    }
+} // namespace
+
+namespace detail {
+    // used by the macros for registering tests
+    int regTest(const TestCase& tc) {
+        getRegisteredTests().insert(tc);
+        return 0;
+    }
+
+    // sets the current test suite
+    int setTestSuite(const TestSuite& ts) {
+        doctest_detail_test_suite_ns::getCurrentTestSuite() = ts;
+        return 0;
+    }
+
+#ifdef DOCTEST_IS_DEBUGGER_ACTIVE
+    bool isDebuggerActive() { return DOCTEST_IS_DEBUGGER_ACTIVE(); }
+#else // DOCTEST_IS_DEBUGGER_ACTIVE
+#ifdef DOCTEST_PLATFORM_LINUX
+    class ErrnoGuard {
+    public:
+        ErrnoGuard() : m_oldErrno(errno) {}
+        ~ErrnoGuard() { errno = m_oldErrno; }
+    private:
+        int m_oldErrno;
+    };
+    // See the comments in Catch2 for the reasoning behind this implementation:
+    // https://github.com/catchorg/Catch2/blob/v2.13.1/include/internal/catch_debugger.cpp#L79-L102
+    bool isDebuggerActive() {
+        ErrnoGuard guard;
+        std::ifstream in("/proc/self/status");
+        for(std::string line; std::getline(in, line);) {
+            static const int PREFIX_LEN = 11;
+            if(line.compare(0, PREFIX_LEN, "TracerPid:\t") == 0) {
+                return line.length() > PREFIX_LEN && line[PREFIX_LEN] != '0';
+            }
+        }
+        return false;
+    }
+#elif defined(DOCTEST_PLATFORM_MAC)
+    // The following function is taken directly from the following technical note:
+    // https://developer.apple.com/library/archive/qa/qa1361/_index.html
+    // Returns true if the current process is being debugged (either
+    // running under the debugger or has a debugger attached post facto).
+    bool isDebuggerActive() {
+        int        mib[4];
+        kinfo_proc info;
+        size_t     size;
+        // Initialize the flags so that, if sysctl fails for some bizarre
+        // reason, we get a predictable result.
+        info.kp_proc.p_flag = 0;
+        // Initialize mib, which tells sysctl the info we want, in this case
+        // we're looking for information about a specific process ID.
+        mib[0] = CTL_KERN;
+        mib[1] = KERN_PROC;
+        mib[2] = KERN_PROC_PID;
+        mib[3] = getpid();
+        // Call sysctl.
+        size = sizeof(info);
+        if(sysctl(mib, DOCTEST_COUNTOF(mib), &info, &size, 0, 0) != 0) {
+            std::cerr << "\nCall to sysctl failed - unable to determine if debugger is active **\n";
+            return false;
+        }
+        // We're being debugged if the P_TRACED flag is set.
+        return ((info.kp_proc.p_flag & P_TRACED) != 0);
+    }
+#elif DOCTEST_MSVC || defined(__MINGW32__) || defined(__MINGW64__)
+    bool isDebuggerActive() { return ::IsDebuggerPresent() != 0; }
+#else
+    bool isDebuggerActive() { return false; }
+#endif // Platform
+#endif // DOCTEST_IS_DEBUGGER_ACTIVE
+
+    void registerExceptionTranslatorImpl(const IExceptionTranslator* et) {
+        if(std::find(getExceptionTranslators().begin(), getExceptionTranslators().end(), et) ==
+           getExceptionTranslators().end())
+            getExceptionTranslators().push_back(et);
+    }
+
+    DOCTEST_THREAD_LOCAL std::vector<IContextScope*> g_infoContexts; // for logging with INFO()
+
+    ContextScopeBase::ContextScopeBase() {
+        g_infoContexts.push_back(this);
+    }
+
+    ContextScopeBase::ContextScopeBase(ContextScopeBase&& other) noexcept {
+        if (other.need_to_destroy) {
+            other.destroy();
+        }
+        other.need_to_destroy = false;
+        g_infoContexts.push_back(this);
+    }
+
+    DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4996) // std::uncaught_exception is deprecated in C++17
+    DOCTEST_GCC_SUPPRESS_WARNING_WITH_PUSH("-Wdeprecated-declarations")
+    DOCTEST_CLANG_SUPPRESS_WARNING_WITH_PUSH("-Wdeprecated-declarations")
+
+    // destroy cannot be inlined into the destructor because that would mean calling stringify after
+    // ContextScope has been destroyed (base class destructors run after derived class destructors).
+    // Instead, ContextScope calls this method directly from its destructor.
+    void ContextScopeBase::destroy() {
+#if defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411L && (!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200)
+        if(std::uncaught_exceptions() > 0) {
+#else
+        if(std::uncaught_exception()) {
+#endif
+            std::ostringstream s;
+            this->stringify(&s);
+            g_cs->stringifiedContexts.push_back(s.str().c_str());
+        }
+        g_infoContexts.pop_back();
+    }
+
+    DOCTEST_CLANG_SUPPRESS_WARNING_POP
+    DOCTEST_GCC_SUPPRESS_WARNING_POP
+    DOCTEST_MSVC_SUPPRESS_WARNING_POP
+} // namespace detail
+namespace {
+    using namespace detail;
+
+#if !defined(DOCTEST_CONFIG_POSIX_SIGNALS) && !defined(DOCTEST_CONFIG_WINDOWS_SEH)
+    struct FatalConditionHandler
+    {
+        static void reset() {}
+        static void allocateAltStackMem() {}
+        static void freeAltStackMem() {}
+    };
+#else // DOCTEST_CONFIG_POSIX_SIGNALS || DOCTEST_CONFIG_WINDOWS_SEH
+
+    void reportFatal(const std::string&);
+
+#ifdef DOCTEST_PLATFORM_WINDOWS
+
+    struct SignalDefs
+    {
+        DWORD id;
+        const char* name;
+    };
+    // There is no 1-1 mapping between signals and windows exceptions.
+    // Windows can easily distinguish between SO and SigSegV,
+    // but SigInt, SigTerm, etc are handled differently.
+    SignalDefs signalDefs[] = {
+            {static_cast<DWORD>(EXCEPTION_ILLEGAL_INSTRUCTION),
+             "SIGILL - Illegal instruction signal"},
+            {static_cast<DWORD>(EXCEPTION_STACK_OVERFLOW), "SIGSEGV - Stack overflow"},
+            {static_cast<DWORD>(EXCEPTION_ACCESS_VIOLATION),
+             "SIGSEGV - Segmentation violation signal"},
+            {static_cast<DWORD>(EXCEPTION_INT_DIVIDE_BY_ZERO), "Divide by zero error"},
+    };
+
+    struct FatalConditionHandler
+    {
+        static LONG CALLBACK handleException(PEXCEPTION_POINTERS ExceptionInfo) {
+            // Multiple threads may enter this filter/handler at once. We want the error message to be printed on the
+            // console just once no matter how many threads have crashed.
+            DOCTEST_DECLARE_STATIC_MUTEX(mutex)
+            static bool execute = true;
+            {
+                DOCTEST_LOCK_MUTEX(mutex)
+                if(execute) {
+                    bool reported = false;
+                    for(size_t i = 0; i < DOCTEST_COUNTOF(signalDefs); ++i) {
+                        if(ExceptionInfo->ExceptionRecord->ExceptionCode == signalDefs[i].id) {
+                            reportFatal(signalDefs[i].name);
+                            reported = true;
+                            break;
+                        }
+                    }
+                    if(reported == false)
+                        reportFatal("Unhandled SEH exception caught");
+                    if(isDebuggerActive() && !g_cs->no_breaks)
+                        DOCTEST_BREAK_INTO_DEBUGGER();
+                }
+                execute = false;
+            }
+            std::exit(EXIT_FAILURE);
+        }
+
+        static void allocateAltStackMem() {}
+        static void freeAltStackMem() {}
+
+        FatalConditionHandler() {
+            isSet = true;
+            // 32k seems enough for doctest to handle stack overflow,
+            // but the value was found experimentally, so there is no strong guarantee
+            guaranteeSize = 32 * 1024;
+            // Register an unhandled exception filter
+            previousTop = SetUnhandledExceptionFilter(handleException);
+            // Pass in guarantee size to be filled
+            SetThreadStackGuarantee(&guaranteeSize);
+
+            // On Windows uncaught exceptions from another thread, exceptions from
+            // destructors, or calls to std::terminate are not a SEH exception
+
+            // The terminal handler gets called when:
+            // - std::terminate is called FROM THE TEST RUNNER THREAD
+            // - an exception is thrown from a destructor FROM THE TEST RUNNER THREAD
+            original_terminate_handler = std::get_terminate();
+            std::set_terminate([]() DOCTEST_NOEXCEPT {
+                reportFatal("Terminate handler called");
+                if(isDebuggerActive() && !g_cs->no_breaks)
+                    DOCTEST_BREAK_INTO_DEBUGGER();
+                std::exit(EXIT_FAILURE); // explicitly exit - otherwise the SIGABRT handler may be called as well
+            });
+
+            // SIGABRT is raised when:
+            // - std::terminate is called FROM A DIFFERENT THREAD
+            // - an exception is thrown from a destructor FROM A DIFFERENT THREAD
+            // - an uncaught exception is thrown FROM A DIFFERENT THREAD
+            prev_sigabrt_handler = std::signal(SIGABRT, [](int signal) DOCTEST_NOEXCEPT {
+                if(signal == SIGABRT) {
+                    reportFatal("SIGABRT - Abort (abnormal termination) signal");
+                    if(isDebuggerActive() && !g_cs->no_breaks)
+                        DOCTEST_BREAK_INTO_DEBUGGER();
+                    std::exit(EXIT_FAILURE);
+                }
+            });
+
+            // The following settings are taken from google test, and more
+            // specifically from UnitTest::Run() inside of gtest.cc
+
+            // the user does not want to see pop-up dialogs about crashes
+            prev_error_mode_1 = SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOALIGNMENTFAULTEXCEPT |
+                                             SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX);
+            // This forces the abort message to go to stderr in all circumstances.
+            prev_error_mode_2 = _set_error_mode(_OUT_TO_STDERR);
+            // In the debug version, Visual Studio pops up a separate dialog
+            // offering a choice to debug the aborted program - we want to disable that.
+            prev_abort_behavior = _set_abort_behavior(0x0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
+            // In debug mode, the Windows CRT can crash with an assertion over invalid
+            // input (e.g. passing an invalid file descriptor). The default handling
+            // for these assertions is to pop up a dialog and wait for user input.
+            // Instead ask the CRT to dump such assertions to stderr non-interactively.
+            prev_report_mode = _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
+            prev_report_file = _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
+        }
+
+        static void reset() {
+            if(isSet) {
+                // Unregister handler and restore the old guarantee
+                SetUnhandledExceptionFilter(previousTop);
+                SetThreadStackGuarantee(&guaranteeSize);
+                std::set_terminate(original_terminate_handler);
+                std::signal(SIGABRT, prev_sigabrt_handler);
+                SetErrorMode(prev_error_mode_1);
+                _set_error_mode(prev_error_mode_2);
+                _set_abort_behavior(prev_abort_behavior, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
+                static_cast<void>(_CrtSetReportMode(_CRT_ASSERT, prev_report_mode));
+                static_cast<void>(_CrtSetReportFile(_CRT_ASSERT, prev_report_file));
+                isSet = false;
+            }
+        }
+
+        ~FatalConditionHandler() { reset(); }
+
+    private:
+        static UINT         prev_error_mode_1;
+        static int          prev_error_mode_2;
+        static unsigned int prev_abort_behavior;
+        static int          prev_report_mode;
+        static _HFILE       prev_report_file;
+        static void (DOCTEST_CDECL *prev_sigabrt_handler)(int);
+        static std::terminate_handler original_terminate_handler;
+        static bool isSet;
+        static ULONG guaranteeSize;
+        static LPTOP_LEVEL_EXCEPTION_FILTER previousTop;
+    };
+
+    UINT         FatalConditionHandler::prev_error_mode_1;
+    int          FatalConditionHandler::prev_error_mode_2;
+    unsigned int FatalConditionHandler::prev_abort_behavior;
+    int          FatalConditionHandler::prev_report_mode;
+    _HFILE       FatalConditionHandler::prev_report_file;
+    void (DOCTEST_CDECL *FatalConditionHandler::prev_sigabrt_handler)(int);
+    std::terminate_handler FatalConditionHandler::original_terminate_handler;
+    bool FatalConditionHandler::isSet = false;
+    ULONG FatalConditionHandler::guaranteeSize = 0;
+    LPTOP_LEVEL_EXCEPTION_FILTER FatalConditionHandler::previousTop = nullptr;
+
+#else // DOCTEST_PLATFORM_WINDOWS
+
+    struct SignalDefs
+    {
+        int         id;
+        const char* name;
+    };
+    SignalDefs signalDefs[] = {{SIGINT, "SIGINT - Terminal interrupt signal"},
+                               {SIGILL, "SIGILL - Illegal instruction signal"},
+                               {SIGFPE, "SIGFPE - Floating point error signal"},
+                               {SIGSEGV, "SIGSEGV - Segmentation violation signal"},
+                               {SIGTERM, "SIGTERM - Termination request signal"},
+                               {SIGABRT, "SIGABRT - Abort (abnormal termination) signal"}};
+
+    struct FatalConditionHandler
+    {
+        static bool             isSet;
+        static struct sigaction oldSigActions[DOCTEST_COUNTOF(signalDefs)];
+        static stack_t          oldSigStack;
+        static size_t           altStackSize;
+        static char*            altStackMem;
+
+        static void handleSignal(int sig) {
+            const char* name = "<unknown signal>";
+            for(std::size_t i = 0; i < DOCTEST_COUNTOF(signalDefs); ++i) {
+                SignalDefs& def = signalDefs[i];
+                if(sig == def.id) {
+                    name = def.name;
+                    break;
+                }
+            }
+            reset();
+            reportFatal(name);
+            raise(sig);
+        }
+
+        static void allocateAltStackMem() {
+            altStackMem = new char[altStackSize];
+        }
+
+        static void freeAltStackMem() {
+            delete[] altStackMem;
+        }
+
+        FatalConditionHandler() {
+            isSet = true;
+            stack_t sigStack;
+            sigStack.ss_sp    = altStackMem;
+            sigStack.ss_size  = altStackSize;
+            sigStack.ss_flags = 0;
+            sigaltstack(&sigStack, &oldSigStack);
+            struct sigaction sa = {};
+            sa.sa_handler       = handleSignal;
+            sa.sa_flags         = SA_ONSTACK;
+            for(std::size_t i = 0; i < DOCTEST_COUNTOF(signalDefs); ++i) {
+                sigaction(signalDefs[i].id, &sa, &oldSigActions[i]);
+            }
+        }
+
+        ~FatalConditionHandler() { reset(); }
+        static void reset() {
+            if(isSet) {
+                // Set signals back to previous values -- hopefully nobody overwrote them in the meantime
+                for(std::size_t i = 0; i < DOCTEST_COUNTOF(signalDefs); ++i) {
+                    sigaction(signalDefs[i].id, &oldSigActions[i], nullptr);
+                }
+                // Return the old stack
+                sigaltstack(&oldSigStack, nullptr);
+                isSet = false;
+            }
+        }
+    };
+
+    bool             FatalConditionHandler::isSet = false;
+    struct sigaction FatalConditionHandler::oldSigActions[DOCTEST_COUNTOF(signalDefs)] = {};
+    stack_t          FatalConditionHandler::oldSigStack = {};
+    size_t           FatalConditionHandler::altStackSize = 4 * SIGSTKSZ;
+    char*            FatalConditionHandler::altStackMem = nullptr;
+
+#endif // DOCTEST_PLATFORM_WINDOWS
+#endif // DOCTEST_CONFIG_POSIX_SIGNALS || DOCTEST_CONFIG_WINDOWS_SEH
+
+} // namespace
+
+namespace {
+    using namespace detail;
+
+#ifdef DOCTEST_PLATFORM_WINDOWS
+#define DOCTEST_OUTPUT_DEBUG_STRING(text) ::OutputDebugStringA(text)
+#else
+    // TODO: integration with XCode and other IDEs
+#define DOCTEST_OUTPUT_DEBUG_STRING(text)
+#endif // Platform
+
+    void addAssert(assertType::Enum at) {
+        if((at & assertType::is_warn) == 0) //!OCLINT bitwise operator in conditional
+            g_cs->numAssertsCurrentTest_atomic++;
+    }
+
+    void addFailedAssert(assertType::Enum at) {
+        if((at & assertType::is_warn) == 0) //!OCLINT bitwise operator in conditional
+            g_cs->numAssertsFailedCurrentTest_atomic++;
+    }
+
+#if defined(DOCTEST_CONFIG_POSIX_SIGNALS) || defined(DOCTEST_CONFIG_WINDOWS_SEH)
+    void reportFatal(const std::string& message) {
+        g_cs->failure_flags |= TestCaseFailureReason::Crash;
+
+        DOCTEST_ITERATE_THROUGH_REPORTERS(test_case_exception, {message.c_str(), true});
+
+        while (g_cs->subcaseStack.size()) {
+            g_cs->subcaseStack.pop_back();
+            DOCTEST_ITERATE_THROUGH_REPORTERS(subcase_end, DOCTEST_EMPTY);
+        }
+
+        g_cs->finalizeTestCaseData();
+
+        DOCTEST_ITERATE_THROUGH_REPORTERS(test_case_end, *g_cs);
+
+        DOCTEST_ITERATE_THROUGH_REPORTERS(test_run_end, *g_cs);
+    }
+#endif // DOCTEST_CONFIG_POSIX_SIGNALS || DOCTEST_CONFIG_WINDOWS_SEH
+} // namespace
+
+AssertData::AssertData(assertType::Enum at, const char* file, int line, const char* expr,
+    const char* exception_type, const StringContains& exception_string)
+    : m_test_case(g_cs->currentTest), m_at(at), m_file(file), m_line(line), m_expr(expr),
+    m_failed(true), m_threw(false), m_threw_as(false), m_exception_type(exception_type),
+    m_exception_string(exception_string) {
+#if DOCTEST_MSVC
+    if (m_expr[0] == ' ') // this happens when variadic macros are disabled under MSVC
+        ++m_expr;
+#endif // MSVC
+}
+
+namespace detail {
+    ResultBuilder::ResultBuilder(assertType::Enum at, const char* file, int line, const char* expr,
+                                 const char* exception_type, const String& exception_string)
+        : AssertData(at, file, line, expr, exception_type, exception_string) { }
+
+    ResultBuilder::ResultBuilder(assertType::Enum at, const char* file, int line, const char* expr,
+        const char* exception_type, const Contains& exception_string)
+        : AssertData(at, file, line, expr, exception_type, exception_string) { }
+
+    void ResultBuilder::setResult(const Result& res) {
+        m_decomp = res.m_decomp;
+        m_failed = !res.m_passed;
+    }
+
+    void ResultBuilder::translateException() {
+        m_threw     = true;
+        m_exception = translateActiveException();
+    }
+
+    bool ResultBuilder::log() {
+        if(m_at & assertType::is_throws) { //!OCLINT bitwise operator in conditional
+            m_failed = !m_threw;
+        } else if((m_at & assertType::is_throws_as) && (m_at & assertType::is_throws_with)) { //!OCLINT
+            m_failed = !m_threw_as || !m_exception_string.check(m_exception);
+        } else if(m_at & assertType::is_throws_as) { //!OCLINT bitwise operator in conditional
+            m_failed = !m_threw_as;
+        } else if(m_at & assertType::is_throws_with) { //!OCLINT bitwise operator in conditional
+            m_failed = !m_exception_string.check(m_exception);
+        } else if(m_at & assertType::is_nothrow) { //!OCLINT bitwise operator in conditional
+            m_failed = m_threw;
+        }
+
+        if(m_exception.size())
+            m_exception = "\"" + m_exception + "\"";
+
+        if(is_running_in_test) {
+            addAssert(m_at);
+            DOCTEST_ITERATE_THROUGH_REPORTERS(log_assert, *this);
+
+            if(m_failed)
+                addFailedAssert(m_at);
+        } else if(m_failed) {
+            failed_out_of_a_testing_context(*this);
+        }
+
+        return m_failed && isDebuggerActive() && !getContextOptions()->no_breaks &&
+            (g_cs->currentTest == nullptr || !g_cs->currentTest->m_no_breaks); // break into debugger
+    }
+
+    void ResultBuilder::react() const {
+        if(m_failed && checkIfShouldThrow(m_at))
+            throwException();
+    }
+
+    void failed_out_of_a_testing_context(const AssertData& ad) {
+        if(g_cs->ah)
+            g_cs->ah(ad);
+        else
+            std::abort();
+    }
+
+    bool decomp_assert(assertType::Enum at, const char* file, int line, const char* expr,
+                       const Result& result) {
+        bool failed = !result.m_passed;
+
+        // ###################################################################################
+        // IF THE DEBUGGER BREAKS HERE - GO 1 LEVEL UP IN THE CALLSTACK FOR THE FAILING ASSERT
+        // THIS IS THE EFFECT OF HAVING 'DOCTEST_CONFIG_SUPER_FAST_ASSERTS' DEFINED
+        // ###################################################################################
+        DOCTEST_ASSERT_OUT_OF_TESTS(result.m_decomp);
+        DOCTEST_ASSERT_IN_TESTS(result.m_decomp);
+        return !failed;
+    }
+
+    MessageBuilder::MessageBuilder(const char* file, int line, assertType::Enum severity) {
+        m_stream   = tlssPush();
+        m_file     = file;
+        m_line     = line;
+        m_severity = severity;
+    }
+
+    MessageBuilder::~MessageBuilder() {
+        if (!logged)
+            tlssPop();
+    }
+
+    DOCTEST_DEFINE_INTERFACE(IExceptionTranslator)
+
+    bool MessageBuilder::log() {
+        if (!logged) {
+            m_string = tlssPop();
+            logged = true;
+        }
+
+        DOCTEST_ITERATE_THROUGH_REPORTERS(log_message, *this);
+
+        const bool isWarn = m_severity & assertType::is_warn;
+
+        // warn is just a message in this context so we don't treat it as an assert
+        if(!isWarn) {
+            addAssert(m_severity);
+            addFailedAssert(m_severity);
+        }
+
+        return isDebuggerActive() && !getContextOptions()->no_breaks && !isWarn &&
+            (g_cs->currentTest == nullptr || !g_cs->currentTest->m_no_breaks); // break into debugger
+    }
+
+    void MessageBuilder::react() {
+        if(m_severity & assertType::is_require) //!OCLINT bitwise operator in conditional
+            throwException();
+    }
+} // namespace detail
+namespace {
+    using namespace detail;
+
+    // clang-format off
+
+// =================================================================================================
+// The following code has been taken verbatim from Catch2/include/internal/catch_xmlwriter.h/cpp
+// This is done so cherry-picking bug fixes is trivial - even the style/formatting is untouched.
+// =================================================================================================
+
+    class XmlEncode {
+    public:
+        enum ForWhat { ForTextNodes, ForAttributes };
+
+        XmlEncode( std::string const& str, ForWhat forWhat = ForTextNodes );
+
+        void encodeTo( std::ostream& os ) const;
+
+        friend std::ostream& operator << ( std::ostream& os, XmlEncode const& xmlEncode );
+
+    private:
+        std::string m_str;
+        ForWhat m_forWhat;
+    };
+
+    class XmlWriter {
+    public:
+
+        class ScopedElement {
+        public:
+            ScopedElement( XmlWriter* writer );
+
+            ScopedElement( ScopedElement&& other ) DOCTEST_NOEXCEPT;
+            ScopedElement& operator=( ScopedElement&& other ) DOCTEST_NOEXCEPT;
+
+            ~ScopedElement();
+
+            ScopedElement& writeText( std::string const& text, bool indent = true );
+
+            template<typename T>
+            ScopedElement& writeAttribute( std::string const& name, T const& attribute ) {
+                m_writer->writeAttribute( name, attribute );
+                return *this;
+            }
+
+        private:
+            mutable XmlWriter* m_writer = nullptr;
+        };
+
+#ifndef DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+        XmlWriter( std::ostream& os = std::cout );
+#else // DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+        XmlWriter( std::ostream& os );
+#endif // DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+        ~XmlWriter();
+
+        XmlWriter( XmlWriter const& ) = delete;
+        XmlWriter& operator=( XmlWriter const& ) = delete;
+
+        XmlWriter& startElement( std::string const& name );
+
+        ScopedElement scopedElement( std::string const& name );
+
+        XmlWriter& endElement();
+
+        XmlWriter& writeAttribute( std::string const& name, std::string const& attribute );
+
+        XmlWriter& writeAttribute( std::string const& name, const char* attribute );
+
+        XmlWriter& writeAttribute( std::string const& name, bool attribute );
+
+        template<typename T>
+        XmlWriter& writeAttribute( std::string const& name, T const& attribute ) {
+        std::stringstream rss;
+            rss << attribute;
+            return writeAttribute( name, rss.str() );
+        }
+
+        XmlWriter& writeText( std::string const& text, bool indent = true );
+
+        //XmlWriter& writeComment( std::string const& text );
+
+        //void writeStylesheetRef( std::string const& url );
+
+        //XmlWriter& writeBlankLine();
+
+        void ensureTagClosed();
+
+        void writeDeclaration();
+
+    private:
+
+        void newlineIfNecessary();
+
+        bool m_tagIsOpen = false;
+        bool m_needsNewline = false;
+        std::vector<std::string> m_tags;
+        std::string m_indent;
+        std::ostream& m_os;
+    };
+
+// =================================================================================================
+// The following code has been taken verbatim from Catch2/include/internal/catch_xmlwriter.h/cpp
+// This is done so cherry-picking bug fixes is trivial - even the style/formatting is untouched.
+// =================================================================================================
+
+using uchar = unsigned char;
+
+namespace {
+
+    size_t trailingBytes(unsigned char c) {
+        if ((c & 0xE0) == 0xC0) {
+            return 2;
+        }
+        if ((c & 0xF0) == 0xE0) {
+            return 3;
+        }
+        if ((c & 0xF8) == 0xF0) {
+            return 4;
+        }
+        DOCTEST_INTERNAL_ERROR("Invalid multibyte utf-8 start byte encountered");
+    }
+
+    uint32_t headerValue(unsigned char c) {
+        if ((c & 0xE0) == 0xC0) {
+            return c & 0x1F;
+        }
+        if ((c & 0xF0) == 0xE0) {
+            return c & 0x0F;
+        }
+        if ((c & 0xF8) == 0xF0) {
+            return c & 0x07;
+        }
+        DOCTEST_INTERNAL_ERROR("Invalid multibyte utf-8 start byte encountered");
+    }
+
+    void hexEscapeChar(std::ostream& os, unsigned char c) {
+        std::ios_base::fmtflags f(os.flags());
+        os << "\\x"
+            << std::uppercase << std::hex << std::setfill('0') << std::setw(2)
+            << static_cast<int>(c);
+        os.flags(f);
+    }
+
+} // anonymous namespace
+
+    XmlEncode::XmlEncode( std::string const& str, ForWhat forWhat )
+    :   m_str( str ),
+        m_forWhat( forWhat )
+    {}
+
+    void XmlEncode::encodeTo( std::ostream& os ) const {
+        // Apostrophe escaping not necessary if we always use " to write attributes
+        // (see: https://www.w3.org/TR/xml/#syntax)
+
+        for( std::size_t idx = 0; idx < m_str.size(); ++ idx ) {
+            uchar c = m_str[idx];
+            switch (c) {
+            case '<':   os << "&lt;"; break;
+            case '&':   os << "&amp;"; break;
+
+            case '>':
+                // See: https://www.w3.org/TR/xml/#syntax
+                if (idx > 2 && m_str[idx - 1] == ']' && m_str[idx - 2] == ']')
+                    os << "&gt;";
+                else
+                    os << c;
+                break;
+
+            case '\"':
+                if (m_forWhat == ForAttributes)
+                    os << "&quot;";
+                else
+                    os << c;
+                break;
+
+            default:
+                // Check for control characters and invalid utf-8
+
+                // Escape control characters in standard ascii
+                // see https://stackoverflow.com/questions/404107/why-are-control-characters-illegal-in-xml-1-0
+                if (c < 0x09 || (c > 0x0D && c < 0x20) || c == 0x7F) {
+                    hexEscapeChar(os, c);
+                    break;
+                }
+
+                // Plain ASCII: Write it to stream
+                if (c < 0x7F) {
+                    os << c;
+                    break;
+                }
+
+                // UTF-8 territory
+                // Check if the encoding is valid and if it is not, hex escape bytes.
+                // Important: We do not check the exact decoded values for validity, only the encoding format
+                // First check that this bytes is a valid lead byte:
+                // This means that it is not encoded as 1111 1XXX
+                // Or as 10XX XXXX
+                if (c <  0xC0 ||
+                    c >= 0xF8) {
+                    hexEscapeChar(os, c);
+                    break;
+                }
+
+                auto encBytes = trailingBytes(c);
+                // Are there enough bytes left to avoid accessing out-of-bounds memory?
+                if (idx + encBytes - 1 >= m_str.size()) {
+                    hexEscapeChar(os, c);
+                    break;
+                }
+                // The header is valid, check data
+                // The next encBytes bytes must together be a valid utf-8
+                // This means: bitpattern 10XX XXXX and the extracted value is sane (ish)
+                bool valid = true;
+                uint32_t value = headerValue(c);
+                for (std::size_t n = 1; n < encBytes; ++n) {
+                    uchar nc = m_str[idx + n];
+                    valid &= ((nc & 0xC0) == 0x80);
+                    value = (value << 6) | (nc & 0x3F);
+                }
+
+                if (
+                    // Wrong bit pattern of following bytes
+                    (!valid) ||
+                    // Overlong encodings
+                    (value < 0x80) ||
+                    (                 value < 0x800   && encBytes > 2) || // removed "0x80 <= value &&" because redundant
+                    (0x800 < value && value < 0x10000 && encBytes > 3) ||
+                    // Encoded value out of range
+                    (value >= 0x110000)
+                    ) {
+                    hexEscapeChar(os, c);
+                    break;
+                }
+
+                // If we got here, this is in fact a valid(ish) utf-8 sequence
+                for (std::size_t n = 0; n < encBytes; ++n) {
+                    os << m_str[idx + n];
+                }
+                idx += encBytes - 1;
+                break;
+            }
+        }
+    }
+
+    std::ostream& operator << ( std::ostream& os, XmlEncode const& xmlEncode ) {
+        xmlEncode.encodeTo( os );
+        return os;
+    }
+
+    XmlWriter::ScopedElement::ScopedElement( XmlWriter* writer )
+    :   m_writer( writer )
+    {}
+
+    XmlWriter::ScopedElement::ScopedElement( ScopedElement&& other ) DOCTEST_NOEXCEPT
+    :   m_writer( other.m_writer ){
+        other.m_writer = nullptr;
+    }
+    XmlWriter::ScopedElement& XmlWriter::ScopedElement::operator=( ScopedElement&& other ) DOCTEST_NOEXCEPT {
+        if ( m_writer ) {
+            m_writer->endElement();
+        }
+        m_writer = other.m_writer;
+        other.m_writer = nullptr;
+        return *this;
+    }
+
+
+    XmlWriter::ScopedElement::~ScopedElement() {
+        if( m_writer )
+            m_writer->endElement();
+    }
+
+    XmlWriter::ScopedElement& XmlWriter::ScopedElement::writeText( std::string const& text, bool indent ) {
+        m_writer->writeText( text, indent );
+        return *this;
+    }
+
+    XmlWriter::XmlWriter( std::ostream& os ) : m_os( os )
+    {
+        // writeDeclaration(); // called explicitly by the reporters that use the writer class - see issue #627
+    }
+
+    XmlWriter::~XmlWriter() {
+        while( !m_tags.empty() )
+            endElement();
+    }
+
+    XmlWriter& XmlWriter::startElement( std::string const& name ) {
+        ensureTagClosed();
+        newlineIfNecessary();
+        m_os << m_indent << '<' << name;
+        m_tags.push_back( name );
+        m_indent += "  ";
+        m_tagIsOpen = true;
+        return *this;
+    }
+
+    XmlWriter::ScopedElement XmlWriter::scopedElement( std::string const& name ) {
+        ScopedElement scoped( this );
+        startElement( name );
+        return scoped;
+    }
+
+    XmlWriter& XmlWriter::endElement() {
+        newlineIfNecessary();
+        m_indent = m_indent.substr( 0, m_indent.size()-2 );
+        if( m_tagIsOpen ) {
+            m_os << "/>";
+            m_tagIsOpen = false;
+        }
+        else {
+            m_os << m_indent << "</" << m_tags.back() << ">";
+        }
+        m_os << std::endl;
+        m_tags.pop_back();
+        return *this;
+    }
+
+    XmlWriter& XmlWriter::writeAttribute( std::string const& name, std::string const& attribute ) {
+        if( !name.empty() && !attribute.empty() )
+            m_os << ' ' << name << "=\"" << XmlEncode( attribute, XmlEncode::ForAttributes ) << '"';
+        return *this;
+    }
+
+    XmlWriter& XmlWriter::writeAttribute( std::string const& name, const char* attribute ) {
+        if( !name.empty() && attribute && attribute[0] != '\0' )
+            m_os << ' ' << name << "=\"" << XmlEncode( attribute, XmlEncode::ForAttributes ) << '"';
+        return *this;
+    }
+
+    XmlWriter& XmlWriter::writeAttribute( std::string const& name, bool attribute ) {
+        m_os << ' ' << name << "=\"" << ( attribute ? "true" : "false" ) << '"';
+        return *this;
+    }
+
+    XmlWriter& XmlWriter::writeText( std::string const& text, bool indent ) {
+        if( !text.empty() ){
+            bool tagWasOpen = m_tagIsOpen;
+            ensureTagClosed();
+            if( tagWasOpen && indent )
+                m_os << m_indent;
+            m_os << XmlEncode( text );
+            m_needsNewline = true;
+        }
+        return *this;
+    }
+
+    //XmlWriter& XmlWriter::writeComment( std::string const& text ) {
+    //    ensureTagClosed();
+    //    m_os << m_indent << "<!--" << text << "-->";
+    //    m_needsNewline = true;
+    //    return *this;
+    //}
+
+    //void XmlWriter::writeStylesheetRef( std::string const& url ) {
+    //    m_os << "<?xml-stylesheet type=\"text/xsl\" href=\"" << url << "\"?>\n";
+    //}
+
+    //XmlWriter& XmlWriter::writeBlankLine() {
+    //    ensureTagClosed();
+    //    m_os << '\n';
+    //    return *this;
+    //}
+
+    void XmlWriter::ensureTagClosed() {
+        if( m_tagIsOpen ) {
+            m_os << ">" << std::endl;
+            m_tagIsOpen = false;
+        }
+    }
+
+    void XmlWriter::writeDeclaration() {
+        m_os << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+    }
+
+    void XmlWriter::newlineIfNecessary() {
+        if( m_needsNewline ) {
+            m_os << std::endl;
+            m_needsNewline = false;
+        }
+    }
+
+// =================================================================================================
+// End of copy-pasted code from Catch
+// =================================================================================================
+
+    // clang-format on
+
+    struct XmlReporter : public IReporter
+    {
+        XmlWriter xml;
+        DOCTEST_DECLARE_MUTEX(mutex)
+
+        // caching pointers/references to objects of these types - safe to do
+        const ContextOptions& opt;
+        const TestCaseData*   tc = nullptr;
+
+        XmlReporter(const ContextOptions& co)
+                : xml(*co.cout)
+                , opt(co) {}
+
+        void log_contexts() {
+            int num_contexts = get_num_active_contexts();
+            if(num_contexts) {
+                auto              contexts = get_active_contexts();
+                std::stringstream ss;
+                for(int i = 0; i < num_contexts; ++i) {
+                    contexts[i]->stringify(&ss);
+                    xml.scopedElement("Info").writeText(ss.str());
+                    ss.str("");
+                }
+            }
+        }
+
+        unsigned line(unsigned l) const { return opt.no_line_numbers ? 0 : l; }
+
+        void test_case_start_impl(const TestCaseData& in) {
+            bool open_ts_tag = false;
+            if(tc != nullptr) { // we have already opened a test suite
+                if(std::strcmp(tc->m_test_suite, in.m_test_suite) != 0) {
+                    xml.endElement();
+                    open_ts_tag = true;
+                }
+            }
+            else {
+                open_ts_tag = true; // first test case ==> first test suite
+            }
+
+            if(open_ts_tag) {
+                xml.startElement("TestSuite");
+                xml.writeAttribute("name", in.m_test_suite);
+            }
+
+            tc = &in;
+            xml.startElement("TestCase")
+                    .writeAttribute("name", in.m_name)
+                    .writeAttribute("filename", skipPathFromFilename(in.m_file.c_str()))
+                    .writeAttribute("line", line(in.m_line))
+                    .writeAttribute("description", in.m_description);
+
+            if(Approx(in.m_timeout) != 0)
+                xml.writeAttribute("timeout", in.m_timeout);
+            if(in.m_may_fail)
+                xml.writeAttribute("may_fail", true);
+            if(in.m_should_fail)
+                xml.writeAttribute("should_fail", true);
+        }
+
+        // =========================================================================================
+        // WHAT FOLLOWS ARE OVERRIDES OF THE VIRTUAL METHODS OF THE REPORTER INTERFACE
+        // =========================================================================================
+
+        void report_query(const QueryData& in) override {
+            test_run_start();
+            if(opt.list_reporters) {
+                for(auto& curr : getListeners())
+                    xml.scopedElement("Listener")
+                            .writeAttribute("priority", curr.first.first)
+                            .writeAttribute("name", curr.first.second);
+                for(auto& curr : getReporters())
+                    xml.scopedElement("Reporter")
+                            .writeAttribute("priority", curr.first.first)
+                            .writeAttribute("name", curr.first.second);
+            } else if(opt.count || opt.list_test_cases) {
+                for(unsigned i = 0; i < in.num_data; ++i) {
+                    xml.scopedElement("TestCase").writeAttribute("name", in.data[i]->m_name)
+                        .writeAttribute("testsuite", in.data[i]->m_test_suite)
+                        .writeAttribute("filename", skipPathFromFilename(in.data[i]->m_file.c_str()))
+                        .writeAttribute("line", line(in.data[i]->m_line))
+                        .writeAttribute("skipped", in.data[i]->m_skip);
+                }
+                xml.scopedElement("OverallResultsTestCases")
+                        .writeAttribute("unskipped", in.run_stats->numTestCasesPassingFilters);
+            } else if(opt.list_test_suites) {
+                for(unsigned i = 0; i < in.num_data; ++i)
+                    xml.scopedElement("TestSuite").writeAttribute("name", in.data[i]->m_test_suite);
+                xml.scopedElement("OverallResultsTestCases")
+                        .writeAttribute("unskipped", in.run_stats->numTestCasesPassingFilters);
+                xml.scopedElement("OverallResultsTestSuites")
+                        .writeAttribute("unskipped", in.run_stats->numTestSuitesPassingFilters);
+            }
+            xml.endElement();
+        }
+
+        void test_run_start() override {
+            xml.writeDeclaration();
+
+            // remove .exe extension - mainly to have the same output on UNIX and Windows
+            std::string binary_name = skipPathFromFilename(opt.binary_name.c_str());
+#ifdef DOCTEST_PLATFORM_WINDOWS
+            if(binary_name.rfind(".exe") != std::string::npos)
+                binary_name = binary_name.substr(0, binary_name.length() - 4);
+#endif // DOCTEST_PLATFORM_WINDOWS
+
+            xml.startElement("doctest").writeAttribute("binary", binary_name);
+            if(opt.no_version == false)
+                xml.writeAttribute("version", DOCTEST_VERSION_STR);
+
+            // only the consequential ones (TODO: filters)
+            xml.scopedElement("Options")
+                    .writeAttribute("order_by", opt.order_by.c_str())
+                    .writeAttribute("rand_seed", opt.rand_seed)
+                    .writeAttribute("first", opt.first)
+                    .writeAttribute("last", opt.last)
+                    .writeAttribute("abort_after", opt.abort_after)
+                    .writeAttribute("subcase_filter_levels", opt.subcase_filter_levels)
+                    .writeAttribute("case_sensitive", opt.case_sensitive)
+                    .writeAttribute("no_throw", opt.no_throw)
+                    .writeAttribute("no_skip", opt.no_skip);
+        }
+
+        void test_run_end(const TestRunStats& p) override {
+            if(tc) // the TestSuite tag - only if there has been at least 1 test case
+                xml.endElement();
+
+            xml.scopedElement("OverallResultsAsserts")
+                    .writeAttribute("successes", p.numAsserts - p.numAssertsFailed)
+                    .writeAttribute("failures", p.numAssertsFailed);
+
+            xml.startElement("OverallResultsTestCases")
+                    .writeAttribute("successes",
+                                    p.numTestCasesPassingFilters - p.numTestCasesFailed)
+                    .writeAttribute("failures", p.numTestCasesFailed);
+            if(opt.no_skipped_summary == false)
+                xml.writeAttribute("skipped", p.numTestCases - p.numTestCasesPassingFilters);
+            xml.endElement();
+
+            xml.endElement();
+        }
+
+        void test_case_start(const TestCaseData& in) override {
+            test_case_start_impl(in);
+            xml.ensureTagClosed();
+        }
+
+        void test_case_reenter(const TestCaseData&) override {}
+
+        void test_case_end(const CurrentTestCaseStats& st) override {
+            xml.startElement("OverallResultsAsserts")
+                    .writeAttribute("successes",
+                                    st.numAssertsCurrentTest - st.numAssertsFailedCurrentTest)
+                    .writeAttribute("failures", st.numAssertsFailedCurrentTest)
+                    .writeAttribute("test_case_success", st.testCaseSuccess);
+            if(opt.duration)
+                xml.writeAttribute("duration", st.seconds);
+            if(tc->m_expected_failures)
+                xml.writeAttribute("expected_failures", tc->m_expected_failures);
+            xml.endElement();
+
+            xml.endElement();
+        }
+
+        void test_case_exception(const TestCaseException& e) override {
+            DOCTEST_LOCK_MUTEX(mutex)
+
+            xml.scopedElement("Exception")
+                    .writeAttribute("crash", e.is_crash)
+                    .writeText(e.error_string.c_str());
+        }
+
+        void subcase_start(const SubcaseSignature& in) override {
+            xml.startElement("SubCase")
+                    .writeAttribute("name", in.m_name)
+                    .writeAttribute("filename", skipPathFromFilename(in.m_file))
+                    .writeAttribute("line", line(in.m_line));
+            xml.ensureTagClosed();
+        }
+
+        void subcase_end() override { xml.endElement(); }
+
+        void log_assert(const AssertData& rb) override {
+            if(!rb.m_failed && !opt.success)
+                return;
+
+            DOCTEST_LOCK_MUTEX(mutex)
+
+            xml.startElement("Expression")
+                    .writeAttribute("success", !rb.m_failed)
+                    .writeAttribute("type", assertString(rb.m_at))
+                    .writeAttribute("filename", skipPathFromFilename(rb.m_file))
+                    .writeAttribute("line", line(rb.m_line));
+
+            xml.scopedElement("Original").writeText(rb.m_expr);
+
+            if(rb.m_threw)
+                xml.scopedElement("Exception").writeText(rb.m_exception.c_str());
+
+            if(rb.m_at & assertType::is_throws_as)
+                xml.scopedElement("ExpectedException").writeText(rb.m_exception_type);
+            if(rb.m_at & assertType::is_throws_with)
+                xml.scopedElement("ExpectedExceptionString").writeText(rb.m_exception_string.c_str());
+            if((rb.m_at & assertType::is_normal) && !rb.m_threw)
+                xml.scopedElement("Expanded").writeText(rb.m_decomp.c_str());
+
+            log_contexts();
+
+            xml.endElement();
+        }
+
+        void log_message(const MessageData& mb) override {
+            DOCTEST_LOCK_MUTEX(mutex)
+
+            xml.startElement("Message")
+                    .writeAttribute("type", failureString(mb.m_severity))
+                    .writeAttribute("filename", skipPathFromFilename(mb.m_file))
+                    .writeAttribute("line", line(mb.m_line));
+
+            xml.scopedElement("Text").writeText(mb.m_string.c_str());
+
+            log_contexts();
+
+            xml.endElement();
+        }
+
+        void test_case_skipped(const TestCaseData& in) override {
+            if(opt.no_skipped_summary == false) {
+                test_case_start_impl(in);
+                xml.writeAttribute("skipped", "true");
+                xml.endElement();
+            }
+        }
+    };
+
+    DOCTEST_REGISTER_REPORTER("xml", 0, XmlReporter);
+
+    void fulltext_log_assert_to_stream(std::ostream& s, const AssertData& rb) {
+        if((rb.m_at & (assertType::is_throws_as | assertType::is_throws_with)) ==
+            0) //!OCLINT bitwise operator in conditional
+            s << Color::Cyan << assertString(rb.m_at) << "( " << rb.m_expr << " ) "
+                << Color::None;
+
+        if(rb.m_at & assertType::is_throws) { //!OCLINT bitwise operator in conditional
+            s << (rb.m_threw ? "threw as expected!" : "did NOT throw at all!") << "\n";
+        } else if((rb.m_at & assertType::is_throws_as) &&
+                    (rb.m_at & assertType::is_throws_with)) { //!OCLINT
+            s << Color::Cyan << assertString(rb.m_at) << "( " << rb.m_expr << ", \""
+                << rb.m_exception_string.c_str()
+                << "\", " << rb.m_exception_type << " ) " << Color::None;
+            if(rb.m_threw) {
+                if(!rb.m_failed) {
+                    s << "threw as expected!\n";
+                } else {
+                    s << "threw a DIFFERENT exception! (contents: " << rb.m_exception << ")\n";
+                }
+            } else {
+                s << "did NOT throw at all!\n";
+            }
+        } else if(rb.m_at &
+                    assertType::is_throws_as) { //!OCLINT bitwise operator in conditional
+            s << Color::Cyan << assertString(rb.m_at) << "( " << rb.m_expr << ", "
+                << rb.m_exception_type << " ) " << Color::None
+                << (rb.m_threw ? (rb.m_threw_as ? "threw as expected!" :
+                                                "threw a DIFFERENT exception: ") :
+                                "did NOT throw at all!")
+                << Color::Cyan << rb.m_exception << "\n";
+        } else if(rb.m_at &
+                    assertType::is_throws_with) { //!OCLINT bitwise operator in conditional
+            s << Color::Cyan << assertString(rb.m_at) << "( " << rb.m_expr << ", \""
+                << rb.m_exception_string.c_str()
+                << "\" ) " << Color::None
+                << (rb.m_threw ? (!rb.m_failed ? "threw as expected!" :
+                                                "threw a DIFFERENT exception: ") :
+                                "did NOT throw at all!")
+                << Color::Cyan << rb.m_exception << "\n";
+        } else if(rb.m_at & assertType::is_nothrow) { //!OCLINT bitwise operator in conditional
+            s << (rb.m_threw ? "THREW exception: " : "didn't throw!") << Color::Cyan
+                << rb.m_exception << "\n";
+        } else {
+            s << (rb.m_threw ? "THREW exception: " :
+                                (!rb.m_failed ? "is correct!\n" : "is NOT correct!\n"));
+            if(rb.m_threw)
+                s << rb.m_exception << "\n";
+            else
+                s << "  values: " << assertString(rb.m_at) << "( " << rb.m_decomp << " )\n";
+        }
+    }
+
+    // TODO:
+    // - log_message()
+    // - respond to queries
+    // - honor remaining options
+    // - more attributes in tags
+    struct JUnitReporter : public IReporter
+    {
+        XmlWriter xml;
+        DOCTEST_DECLARE_MUTEX(mutex)
+        Timer timer;
+        std::vector<String> deepestSubcaseStackNames;
+
+        struct JUnitTestCaseData
+        {
+            static std::string getCurrentTimestamp() {
+                // Beware, this is not reentrant because of backward compatibility issues
+                // Also, UTC only, again because of backward compatibility (%z is C++11)
+                time_t rawtime;
+                std::time(&rawtime);
+                auto const timeStampSize = sizeof("2017-01-16T17:06:45Z");
+
+                std::tm timeInfo;
+#ifdef DOCTEST_PLATFORM_WINDOWS
+                gmtime_s(&timeInfo, &rawtime);
+#else // DOCTEST_PLATFORM_WINDOWS
+                gmtime_r(&rawtime, &timeInfo);
+#endif // DOCTEST_PLATFORM_WINDOWS
+
+                char timeStamp[timeStampSize];
+                const char* const fmt = "%Y-%m-%dT%H:%M:%SZ";
+
+                std::strftime(timeStamp, timeStampSize, fmt, &timeInfo);
+                return std::string(timeStamp);
+            }
+
+            struct JUnitTestMessage
+            {
+                JUnitTestMessage(const std::string& _message, const std::string& _type, const std::string& _details)
+                    : message(_message), type(_type), details(_details) {}
+
+                JUnitTestMessage(const std::string& _message, const std::string& _details)
+                    : message(_message), type(), details(_details) {}
+
+                std::string message, type, details;
+            };
+
+            struct JUnitTestCase
+            {
+                JUnitTestCase(const std::string& _classname, const std::string& _name)
+                    : classname(_classname), name(_name), time(0), failures() {}
+
+                std::string classname, name;
+                double time;
+                std::vector<JUnitTestMessage> failures, errors;
+            };
+
+            void add(const std::string& classname, const std::string& name) {
+                testcases.emplace_back(classname, name);
+            }
+
+            void appendSubcaseNamesToLastTestcase(std::vector<String> nameStack) {
+                for(auto& curr: nameStack)
+                    if(curr.size())
+                        testcases.back().name += std::string("/") + curr.c_str();
+            }
+
+            void addTime(double time) {
+                if(time < 1e-4)
+                    time = 0;
+                testcases.back().time = time;
+                totalSeconds += time;
+            }
+
+            void addFailure(const std::string& message, const std::string& type, const std::string& details) {
+                testcases.back().failures.emplace_back(message, type, details);
+                ++totalFailures;
+            }
+
+            void addError(const std::string& message, const std::string& details) {
+                testcases.back().errors.emplace_back(message, details);
+                ++totalErrors;
+            }
+
+            std::vector<JUnitTestCase> testcases;
+            double totalSeconds = 0;
+            int totalErrors = 0, totalFailures = 0;
+        };
+
+        JUnitTestCaseData testCaseData;
+
+        // caching pointers/references to objects of these types - safe to do
+        const ContextOptions& opt;
+        const TestCaseData*   tc = nullptr;
+
+        JUnitReporter(const ContextOptions& co)
+                : xml(*co.cout)
+                , opt(co) {}
+
+        unsigned line(unsigned l) const { return opt.no_line_numbers ? 0 : l; }
+
+        // =========================================================================================
+        // WHAT FOLLOWS ARE OVERRIDES OF THE VIRTUAL METHODS OF THE REPORTER INTERFACE
+        // =========================================================================================
+
+        void report_query(const QueryData&) override {
+            xml.writeDeclaration();
+        }
+
+        void test_run_start() override {
+            xml.writeDeclaration();
+        }
+
+        void test_run_end(const TestRunStats& p) override {
+            // remove .exe extension - mainly to have the same output on UNIX and Windows
+            std::string binary_name = skipPathFromFilename(opt.binary_name.c_str());
+#ifdef DOCTEST_PLATFORM_WINDOWS
+            if(binary_name.rfind(".exe") != std::string::npos)
+                binary_name = binary_name.substr(0, binary_name.length() - 4);
+#endif // DOCTEST_PLATFORM_WINDOWS
+            xml.startElement("testsuites");
+            xml.startElement("testsuite").writeAttribute("name", binary_name)
+                    .writeAttribute("errors", testCaseData.totalErrors)
+                    .writeAttribute("failures", testCaseData.totalFailures)
+                    .writeAttribute("tests", p.numAsserts);
+            if(opt.no_time_in_output == false) {
+                xml.writeAttribute("time", testCaseData.totalSeconds);
+                xml.writeAttribute("timestamp", JUnitTestCaseData::getCurrentTimestamp());
+            }
+            if(opt.no_version == false)
+                xml.writeAttribute("doctest_version", DOCTEST_VERSION_STR);
+
+            for(const auto& testCase : testCaseData.testcases) {
+                xml.startElement("testcase")
+                    .writeAttribute("classname", testCase.classname)
+                    .writeAttribute("name", testCase.name);
+                if(opt.no_time_in_output == false)
+                    xml.writeAttribute("time", testCase.time);
+                // This is not ideal, but it should be enough to mimic gtest's junit output.
+                xml.writeAttribute("status", "run");
+
+                for(const auto& failure : testCase.failures) {
+                    xml.scopedElement("failure")
+                        .writeAttribute("message", failure.message)
+                        .writeAttribute("type", failure.type)
+                        .writeText(failure.details, false);
+                }
+
+                for(const auto& error : testCase.errors) {
+                    xml.scopedElement("error")
+                        .writeAttribute("message", error.message)
+                        .writeText(error.details);
+                }
+
+                xml.endElement();
+            }
+            xml.endElement();
+            xml.endElement();
+        }
+
+        void test_case_start(const TestCaseData& in) override {
+            testCaseData.add(skipPathFromFilename(in.m_file.c_str()), in.m_name);
+            timer.start();
+        }
+
+        void test_case_reenter(const TestCaseData& in) override {
+            testCaseData.addTime(timer.getElapsedSeconds());
+            testCaseData.appendSubcaseNamesToLastTestcase(deepestSubcaseStackNames);
+            deepestSubcaseStackNames.clear();
+
+            timer.start();
+            testCaseData.add(skipPathFromFilename(in.m_file.c_str()), in.m_name);
+        }
+
+        void test_case_end(const CurrentTestCaseStats&) override {
+            testCaseData.addTime(timer.getElapsedSeconds());
+            testCaseData.appendSubcaseNamesToLastTestcase(deepestSubcaseStackNames);
+            deepestSubcaseStackNames.clear();
+        }
+
+        void test_case_exception(const TestCaseException& e) override {
+            DOCTEST_LOCK_MUTEX(mutex)
+            testCaseData.addError("exception", e.error_string.c_str());
+        }
+
+        void subcase_start(const SubcaseSignature& in) override {
+            deepestSubcaseStackNames.push_back(in.m_name);
+        }
+
+        void subcase_end() override {}
+
+        void log_assert(const AssertData& rb) override {
+            if(!rb.m_failed) // report only failures & ignore the `success` option
+                return;
+
+            DOCTEST_LOCK_MUTEX(mutex)
+
+            std::ostringstream os;
+            os << skipPathFromFilename(rb.m_file) << (opt.gnu_file_line ? ":" : "(")
+              << line(rb.m_line) << (opt.gnu_file_line ? ":" : "):") << std::endl;
+
+            fulltext_log_assert_to_stream(os, rb);
+            log_contexts(os);
+            testCaseData.addFailure(rb.m_decomp.c_str(), assertString(rb.m_at), os.str());
+        }
+
+        void log_message(const MessageData& mb) override {
+            if(mb.m_severity & assertType::is_warn) // report only failures
+                return;
+
+            DOCTEST_LOCK_MUTEX(mutex)
+
+            std::ostringstream os;
+            os << skipPathFromFilename(mb.m_file) << (opt.gnu_file_line ? ":" : "(")
+              << line(mb.m_line) << (opt.gnu_file_line ? ":" : "):") << std::endl;
+
+            os << mb.m_string.c_str() << "\n";
+            log_contexts(os);
+
+            testCaseData.addFailure(mb.m_string.c_str(),
+                mb.m_severity & assertType::is_check ? "FAIL_CHECK" : "FAIL", os.str());
+        }
+
+        void test_case_skipped(const TestCaseData&) override {}
+
+        void log_contexts(std::ostringstream& s) {
+            int num_contexts = get_num_active_contexts();
+            if(num_contexts) {
+                auto contexts = get_active_contexts();
+
+                s << "  logged: ";
+                for(int i = 0; i < num_contexts; ++i) {
+                    s << (i == 0 ? "" : "          ");
+                    contexts[i]->stringify(&s);
+                    s << std::endl;
+                }
+            }
+        }
+    };
+
+    DOCTEST_REGISTER_REPORTER("junit", 0, JUnitReporter);
+
+    struct Whitespace
+    {
+        int nrSpaces;
+        explicit Whitespace(int nr)
+                : nrSpaces(nr) {}
+    };
+
+    std::ostream& operator<<(std::ostream& out, const Whitespace& ws) {
+        if(ws.nrSpaces != 0)
+            out << std::setw(ws.nrSpaces) << ' ';
+        return out;
+    }
+
+    struct ConsoleReporter : public IReporter
+    {
+        std::ostream&                 s;
+        bool                          hasLoggedCurrentTestStart;
+        std::vector<SubcaseSignature> subcasesStack;
+        size_t                        currentSubcaseLevel;
+        DOCTEST_DECLARE_MUTEX(mutex)
+
+        // caching pointers/references to objects of these types - safe to do
+        const ContextOptions& opt;
+        const TestCaseData*   tc;
+
+        ConsoleReporter(const ContextOptions& co)
+                : s(*co.cout)
+                , opt(co) {}
+
+        ConsoleReporter(const ContextOptions& co, std::ostream& ostr)
+                : s(ostr)
+                , opt(co) {}
+
+        // =========================================================================================
+        // WHAT FOLLOWS ARE HELPERS USED BY THE OVERRIDES OF THE VIRTUAL METHODS OF THE INTERFACE
+        // =========================================================================================
+
+        void separator_to_stream() {
+            s << Color::Yellow
+              << "==============================================================================="
+                 "\n";
+        }
+
+        const char* getSuccessOrFailString(bool success, assertType::Enum at,
+                                           const char* success_str) {
+            if(success)
+                return success_str;
+            return failureString(at);
+        }
+
+        Color::Enum getSuccessOrFailColor(bool success, assertType::Enum at) {
+            return success ? Color::BrightGreen :
+                             (at & assertType::is_warn) ? Color::Yellow : Color::Red;
+        }
+
+        void successOrFailColoredStringToStream(bool success, assertType::Enum at,
+                                                const char* success_str = "SUCCESS") {
+            s << getSuccessOrFailColor(success, at)
+              << getSuccessOrFailString(success, at, success_str) << ": ";
+        }
+
+        void log_contexts() {
+            int num_contexts = get_num_active_contexts();
+            if(num_contexts) {
+                auto contexts = get_active_contexts();
+
+                s << Color::None << "  logged: ";
+                for(int i = 0; i < num_contexts; ++i) {
+                    s << (i == 0 ? "" : "          ");
+                    contexts[i]->stringify(&s);
+                    s << "\n";
+                }
+            }
+
+            s << "\n";
+        }
+
+        // this was requested to be made virtual so users could override it
+        virtual void file_line_to_stream(const char* file, int line,
+                                        const char* tail = "") {
+            s << Color::LightGrey << skipPathFromFilename(file) << (opt.gnu_file_line ? ":" : "(")
+            << (opt.no_line_numbers ? 0 : line) // 0 or the real num depending on the option
+            << (opt.gnu_file_line ? ":" : "):") << tail;
+        }
+
+        void logTestStart() {
+            if(hasLoggedCurrentTestStart)
+                return;
+
+            separator_to_stream();
+            file_line_to_stream(tc->m_file.c_str(), tc->m_line, "\n");
+            if(tc->m_description)
+                s << Color::Yellow << "DESCRIPTION: " << Color::None << tc->m_description << "\n";
+            if(tc->m_test_suite && tc->m_test_suite[0] != '\0')
+                s << Color::Yellow << "TEST SUITE: " << Color::None << tc->m_test_suite << "\n";
+            if(strncmp(tc->m_name, "  Scenario:", 11) != 0)
+                s << Color::Yellow << "TEST CASE:  ";
+            s << Color::None << tc->m_name << "\n";
+
+            for(size_t i = 0; i < currentSubcaseLevel; ++i) {
+                if(subcasesStack[i].m_name[0] != '\0')
+                    s << "  " << subcasesStack[i].m_name << "\n";
+            }
+
+            if(currentSubcaseLevel != subcasesStack.size()) {
+                s << Color::Yellow << "\nDEEPEST SUBCASE STACK REACHED (DIFFERENT FROM THE CURRENT ONE):\n" << Color::None;
+                for(size_t i = 0; i < subcasesStack.size(); ++i) {
+                    if(subcasesStack[i].m_name[0] != '\0')
+                        s << "  " << subcasesStack[i].m_name << "\n";
+                }
+            }
+
+            s << "\n";
+
+            hasLoggedCurrentTestStart = true;
+        }
+
+        void printVersion() {
+            if(opt.no_version == false)
+                s << Color::Cyan << "[doctest] " << Color::None << "doctest version is \""
+                  << DOCTEST_VERSION_STR << "\"\n";
+        }
+
+        void printIntro() {
+            if(opt.no_intro == false) {
+                printVersion();
+                s << Color::Cyan << "[doctest] " << Color::None
+                  << "run with \"--" DOCTEST_OPTIONS_PREFIX_DISPLAY "help\" for options\n";
+            }
+        }
+
+        void printHelp() {
+            int sizePrefixDisplay = static_cast<int>(strlen(DOCTEST_OPTIONS_PREFIX_DISPLAY));
+            printVersion();
+            // clang-format off
+            s << Color::Cyan << "[doctest]\n" << Color::None;
+            s << Color::Cyan << "[doctest] " << Color::None;
+            s << "boolean values: \"1/on/yes/true\" or \"0/off/no/false\"\n";
+            s << Color::Cyan << "[doctest] " << Color::None;
+            s << "filter  values: \"str1,str2,str3\" (comma separated strings)\n";
+            s << Color::Cyan << "[doctest]\n" << Color::None;
+            s << Color::Cyan << "[doctest] " << Color::None;
+            s << "filters use wildcards for matching strings\n";
+            s << Color::Cyan << "[doctest] " << Color::None;
+            s << "something passes a filter if any of the strings in a filter matches\n";
+#ifndef DOCTEST_CONFIG_NO_UNPREFIXED_OPTIONS
+            s << Color::Cyan << "[doctest]\n" << Color::None;
+            s << Color::Cyan << "[doctest] " << Color::None;
+            s << "ALL FLAGS, OPTIONS AND FILTERS ALSO AVAILABLE WITH A \"" DOCTEST_CONFIG_OPTIONS_PREFIX "\" PREFIX!!!\n";
+#endif
+            s << Color::Cyan << "[doctest]\n" << Color::None;
+            s << Color::Cyan << "[doctest] " << Color::None;
+            s << "Query flags - the program quits after them. Available:\n\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "?,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "help, -" DOCTEST_OPTIONS_PREFIX_DISPLAY "h                      "
+              << Whitespace(sizePrefixDisplay*0) <<  "prints this message\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "v,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "version                       "
+              << Whitespace(sizePrefixDisplay*1) << "prints the version\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "c,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "count                         "
+              << Whitespace(sizePrefixDisplay*1) << "prints the number of matching tests\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "ltc, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "list-test-cases               "
+              << Whitespace(sizePrefixDisplay*1) << "lists all matching tests by name\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "lts, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "list-test-suites              "
+              << Whitespace(sizePrefixDisplay*1) << "lists all matching test suites\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "lr,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "list-reporters                "
+              << Whitespace(sizePrefixDisplay*1) << "lists all registered reporters\n\n";
+            // ================================================================================== << 79
+            s << Color::Cyan << "[doctest] " << Color::None;
+            s << "The available <int>/<string> options/filters are:\n\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "tc,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "test-case=<filters>           "
+              << Whitespace(sizePrefixDisplay*1) << "filters     tests by their name\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "tce, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "test-case-exclude=<filters>   "
+              << Whitespace(sizePrefixDisplay*1) << "filters OUT tests by their name\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "sf,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "source-file=<filters>         "
+              << Whitespace(sizePrefixDisplay*1) << "filters     tests by their file\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "sfe, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "source-file-exclude=<filters> "
+              << Whitespace(sizePrefixDisplay*1) << "filters OUT tests by their file\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "ts,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "test-suite=<filters>          "
+              << Whitespace(sizePrefixDisplay*1) << "filters     tests by their test suite\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "tse, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "test-suite-exclude=<filters>  "
+              << Whitespace(sizePrefixDisplay*1) << "filters OUT tests by their test suite\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "sc,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "subcase=<filters>             "
+              << Whitespace(sizePrefixDisplay*1) << "filters     subcases by their name\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "sce, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "subcase-exclude=<filters>     "
+              << Whitespace(sizePrefixDisplay*1) << "filters OUT subcases by their name\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "r,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "reporters=<filters>           "
+              << Whitespace(sizePrefixDisplay*1) << "reporters to use (console is default)\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "o,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "out=<string>                  "
+              << Whitespace(sizePrefixDisplay*1) << "output filename\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "ob,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "order-by=<string>             "
+              << Whitespace(sizePrefixDisplay*1) << "how the tests should be ordered\n";
+            s << Whitespace(sizePrefixDisplay*3) << "                                       <string> - [file/suite/name/rand/none]\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "rs,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "rand-seed=<int>               "
+              << Whitespace(sizePrefixDisplay*1) << "seed for random ordering\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "f,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "first=<int>                   "
+              << Whitespace(sizePrefixDisplay*1) << "the first test passing the filters to\n";
+            s << Whitespace(sizePrefixDisplay*3) << "                                       execute - for range-based execution\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "l,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "last=<int>                    "
+              << Whitespace(sizePrefixDisplay*1) << "the last test passing the filters to\n";
+            s << Whitespace(sizePrefixDisplay*3) << "                                       execute - for range-based execution\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "aa,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "abort-after=<int>             "
+              << Whitespace(sizePrefixDisplay*1) << "stop after <int> failed assertions\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "scfl,--" DOCTEST_OPTIONS_PREFIX_DISPLAY "subcase-filter-levels=<int>   "
+              << Whitespace(sizePrefixDisplay*1) << "apply filters for the first <int> levels\n";
+            s << Color::Cyan << "\n[doctest] " << Color::None;
+            s << "Bool options - can be used like flags and true is assumed. Available:\n\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "s,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "success=<bool>                "
+              << Whitespace(sizePrefixDisplay*1) << "include successful assertions in output\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "cs,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "case-sensitive=<bool>         "
+              << Whitespace(sizePrefixDisplay*1) << "filters being treated as case sensitive\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "e,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "exit=<bool>                   "
+              << Whitespace(sizePrefixDisplay*1) << "exits after the tests finish\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "d,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "duration=<bool>               "
+              << Whitespace(sizePrefixDisplay*1) << "prints the time duration of each test\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "m,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "minimal=<bool>                "
+              << Whitespace(sizePrefixDisplay*1) << "minimal console output (only failures)\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "q,   --" DOCTEST_OPTIONS_PREFIX_DISPLAY "quiet=<bool>                  "
+              << Whitespace(sizePrefixDisplay*1) << "no console output\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "nt,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-throw=<bool>               "
+              << Whitespace(sizePrefixDisplay*1) << "skips exceptions-related assert checks\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "ne,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-exitcode=<bool>            "
+              << Whitespace(sizePrefixDisplay*1) << "returns (or exits) always with success\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "nr,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-run=<bool>                 "
+              << Whitespace(sizePrefixDisplay*1) << "skips all runtime doctest operations\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "ni,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-intro=<bool>               "
+              << Whitespace(sizePrefixDisplay*1) << "omit the framework intro in the output\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "nv,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-version=<bool>             "
+              << Whitespace(sizePrefixDisplay*1) << "omit the framework version in the output\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "nc,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-colors=<bool>              "
+              << Whitespace(sizePrefixDisplay*1) << "disables colors in output\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "fc,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "force-colors=<bool>           "
+              << Whitespace(sizePrefixDisplay*1) << "use colors even when not in a tty\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "nb,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-breaks=<bool>              "
+              << Whitespace(sizePrefixDisplay*1) << "disables breakpoints in debuggers\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "ns,  --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-skip=<bool>                "
+              << Whitespace(sizePrefixDisplay*1) << "don't skip test cases marked as skip\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "gfl, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "gnu-file-line=<bool>          "
+              << Whitespace(sizePrefixDisplay*1) << ":n: vs (n): for line numbers in output\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "npf, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-path-filenames=<bool>      "
+              << Whitespace(sizePrefixDisplay*1) << "only filenames and no paths in output\n";
+            s << " -" DOCTEST_OPTIONS_PREFIX_DISPLAY "nln, --" DOCTEST_OPTIONS_PREFIX_DISPLAY "no-line-numbers=<bool>        "
+              << Whitespace(sizePrefixDisplay*1) << "0 instead of real line numbers in output\n";
+            // ================================================================================== << 79
+            // clang-format on
+
+            s << Color::Cyan << "\n[doctest] " << Color::None;
+            s << "for more information visit the project documentation\n\n";
+        }
+
+        void printRegisteredReporters() {
+            printVersion();
+            auto printReporters = [this] (const reporterMap& reporters, const char* type) {
+                if(reporters.size()) {
+                    s << Color::Cyan << "[doctest] " << Color::None << "listing all registered " << type << "\n";
+                    for(auto& curr : reporters)
+                        s << "priority: " << std::setw(5) << curr.first.first
+                          << " name: " << curr.first.second << "\n";
+                }
+            };
+            printReporters(getListeners(), "listeners");
+            printReporters(getReporters(), "reporters");
+        }
+
+        // =========================================================================================
+        // WHAT FOLLOWS ARE OVERRIDES OF THE VIRTUAL METHODS OF THE REPORTER INTERFACE
+        // =========================================================================================
+
+        void report_query(const QueryData& in) override {
+            if(opt.version) {
+                printVersion();
+            } else if(opt.help) {
+                printHelp();
+            } else if(opt.list_reporters) {
+                printRegisteredReporters();
+            } else if(opt.count || opt.list_test_cases) {
+                if(opt.list_test_cases) {
+                    s << Color::Cyan << "[doctest] " << Color::None
+                      << "listing all test case names\n";
+                    separator_to_stream();
+                }
+
+                for(unsigned i = 0; i < in.num_data; ++i)
+                    s << Color::None << in.data[i]->m_name << "\n";
+
+                separator_to_stream();
+
+                s << Color::Cyan << "[doctest] " << Color::None
+                  << "unskipped test cases passing the current filters: "
+                  << g_cs->numTestCasesPassingFilters << "\n";
+
+            } else if(opt.list_test_suites) {
+                s << Color::Cyan << "[doctest] " << Color::None << "listing all test suites\n";
+                separator_to_stream();
+
+                for(unsigned i = 0; i < in.num_data; ++i)
+                    s << Color::None << in.data[i]->m_test_suite << "\n";
+
+                separator_to_stream();
+
+                s << Color::Cyan << "[doctest] " << Color::None
+                  << "unskipped test cases passing the current filters: "
+                  << g_cs->numTestCasesPassingFilters << "\n";
+                s << Color::Cyan << "[doctest] " << Color::None
+                  << "test suites with unskipped test cases passing the current filters: "
+                  << g_cs->numTestSuitesPassingFilters << "\n";
+            }
+        }
+
+        void test_run_start() override {
+            if(!opt.minimal)
+                printIntro();
+        }
+
+        void test_run_end(const TestRunStats& p) override {
+            if(opt.minimal && p.numTestCasesFailed == 0)
+                return;
+
+            separator_to_stream();
+            s << std::dec;
+
+            auto totwidth = int(std::ceil(log10(static_cast<double>(std::max(p.numTestCasesPassingFilters, static_cast<unsigned>(p.numAsserts))) + 1)));
+            auto passwidth = int(std::ceil(log10(static_cast<double>(std::max(p.numTestCasesPassingFilters - p.numTestCasesFailed, static_cast<unsigned>(p.numAsserts - p.numAssertsFailed))) + 1)));
+            auto failwidth = int(std::ceil(log10(static_cast<double>(std::max(p.numTestCasesFailed, static_cast<unsigned>(p.numAssertsFailed))) + 1)));
+            const bool anythingFailed = p.numTestCasesFailed > 0 || p.numAssertsFailed > 0;
+            s << Color::Cyan << "[doctest] " << Color::None << "test cases: " << std::setw(totwidth)
+              << p.numTestCasesPassingFilters << " | "
+              << ((p.numTestCasesPassingFilters == 0 || anythingFailed) ? Color::None :
+                                                                          Color::Green)
+              << std::setw(passwidth) << p.numTestCasesPassingFilters - p.numTestCasesFailed << " passed"
+              << Color::None << " | " << (p.numTestCasesFailed > 0 ? Color::Red : Color::None)
+              << std::setw(failwidth) << p.numTestCasesFailed << " failed" << Color::None << " |";
+            if(opt.no_skipped_summary == false) {
+                const int numSkipped = p.numTestCases - p.numTestCasesPassingFilters;
+                s << " " << (numSkipped == 0 ? Color::None : Color::Yellow) << numSkipped
+                  << " skipped" << Color::None;
+            }
+            s << "\n";
+            s << Color::Cyan << "[doctest] " << Color::None << "assertions: " << std::setw(totwidth)
+              << p.numAsserts << " | "
+              << ((p.numAsserts == 0 || anythingFailed) ? Color::None : Color::Green)
+              << std::setw(passwidth) << (p.numAsserts - p.numAssertsFailed) << " passed" << Color::None
+              << " | " << (p.numAssertsFailed > 0 ? Color::Red : Color::None) << std::setw(failwidth)
+              << p.numAssertsFailed << " failed" << Color::None << " |\n";
+            s << Color::Cyan << "[doctest] " << Color::None
+              << "Status: " << (p.numTestCasesFailed > 0 ? Color::Red : Color::Green)
+              << ((p.numTestCasesFailed > 0) ? "FAILURE!" : "SUCCESS!") << Color::None << std::endl;
+        }
+
+        void test_case_start(const TestCaseData& in) override {
+            hasLoggedCurrentTestStart = false;
+            tc                        = &in;
+            subcasesStack.clear();
+            currentSubcaseLevel = 0;
+        }
+
+        void test_case_reenter(const TestCaseData&) override {
+            subcasesStack.clear();
+        }
+
+        void test_case_end(const CurrentTestCaseStats& st) override {
+            if(tc->m_no_output)
+                return;
+
+            // log the preamble of the test case only if there is something
+            // else to print - something other than that an assert has failed
+            if(opt.duration ||
+               (st.failure_flags && st.failure_flags != static_cast<int>(TestCaseFailureReason::AssertFailure)))
+                logTestStart();
+
+            if(opt.duration)
+                s << Color::None << std::setprecision(6) << std::fixed << st.seconds
+                  << " s: " << tc->m_name << "\n";
+
+            if(st.failure_flags & TestCaseFailureReason::Timeout)
+                s << Color::Red << "Test case exceeded time limit of " << std::setprecision(6)
+                  << std::fixed << tc->m_timeout << "!\n";
+
+            if(st.failure_flags & TestCaseFailureReason::ShouldHaveFailedButDidnt) {
+                s << Color::Red << "Should have failed but didn't! Marking it as failed!\n";
+            } else if(st.failure_flags & TestCaseFailureReason::ShouldHaveFailedAndDid) {
+                s << Color::Yellow << "Failed as expected so marking it as not failed\n";
+            } else if(st.failure_flags & TestCaseFailureReason::CouldHaveFailedAndDid) {
+                s << Color::Yellow << "Allowed to fail so marking it as not failed\n";
+            } else if(st.failure_flags & TestCaseFailureReason::DidntFailExactlyNumTimes) {
+                s << Color::Red << "Didn't fail exactly " << tc->m_expected_failures
+                  << " times so marking it as failed!\n";
+            } else if(st.failure_flags & TestCaseFailureReason::FailedExactlyNumTimes) {
+                s << Color::Yellow << "Failed exactly " << tc->m_expected_failures
+                  << " times as expected so marking it as not failed!\n";
+            }
+            if(st.failure_flags & TestCaseFailureReason::TooManyFailedAsserts) {
+                s << Color::Red << "Aborting - too many failed asserts!\n";
+            }
+            s << Color::None; // lgtm [cpp/useless-expression]
+        }
+
+        void test_case_exception(const TestCaseException& e) override {
+            DOCTEST_LOCK_MUTEX(mutex)
+            if(tc->m_no_output)
+                return;
+
+            logTestStart();
+
+            file_line_to_stream(tc->m_file.c_str(), tc->m_line, " ");
+            successOrFailColoredStringToStream(false, e.is_crash ? assertType::is_require :
+                                                                   assertType::is_check);
+            s << Color::Red << (e.is_crash ? "test case CRASHED: " : "test case THREW exception: ")
+              << Color::Cyan << e.error_string << "\n";
+
+            int num_stringified_contexts = get_num_stringified_contexts();
+            if(num_stringified_contexts) {
+                auto stringified_contexts = get_stringified_contexts();
+                s << Color::None << "  logged: ";
+                for(int i = num_stringified_contexts; i > 0; --i) {
+                    s << (i == num_stringified_contexts ? "" : "          ")
+                      << stringified_contexts[i - 1] << "\n";
+                }
+            }
+            s << "\n" << Color::None;
+        }
+
+        void subcase_start(const SubcaseSignature& subc) override {
+            subcasesStack.push_back(subc);
+            ++currentSubcaseLevel;
+            hasLoggedCurrentTestStart = false;
+        }
+
+        void subcase_end() override {
+            --currentSubcaseLevel;
+            hasLoggedCurrentTestStart = false;
+        }
+
+        void log_assert(const AssertData& rb) override {
+            if((!rb.m_failed && !opt.success) || tc->m_no_output)
+                return;
+
+            DOCTEST_LOCK_MUTEX(mutex)
+
+            logTestStart();
+
+            file_line_to_stream(rb.m_file, rb.m_line, " ");
+            successOrFailColoredStringToStream(!rb.m_failed, rb.m_at);
+
+            fulltext_log_assert_to_stream(s, rb);
+
+            log_contexts();
+        }
+
+        void log_message(const MessageData& mb) override {
+            if(tc->m_no_output)
+                return;
+
+            DOCTEST_LOCK_MUTEX(mutex)
+
+            logTestStart();
+
+            file_line_to_stream(mb.m_file, mb.m_line, " ");
+            s << getSuccessOrFailColor(false, mb.m_severity)
+              << getSuccessOrFailString(mb.m_severity & assertType::is_warn, mb.m_severity,
+                                        "MESSAGE") << ": ";
+            s << Color::None << mb.m_string << "\n";
+            log_contexts();
+        }
+
+        void test_case_skipped(const TestCaseData&) override {}
+    };
+
+    DOCTEST_REGISTER_REPORTER("console", 0, ConsoleReporter);
+
+#ifdef DOCTEST_PLATFORM_WINDOWS
+    struct DebugOutputWindowReporter : public ConsoleReporter
+    {
+        DOCTEST_THREAD_LOCAL static std::ostringstream oss;
+
+        DebugOutputWindowReporter(const ContextOptions& co)
+                : ConsoleReporter(co, oss) {}
+
+#define DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(func, type, arg)                                    \
+    void func(type arg) override {                                                                 \
+        bool with_col = g_no_colors;                                                               \
+        g_no_colors   = false;                                                                     \
+        ConsoleReporter::func(arg);                                                                \
+        if(oss.tellp() != std::streampos{}) {                                                      \
+            DOCTEST_OUTPUT_DEBUG_STRING(oss.str().c_str());                                        \
+            oss.str("");                                                                           \
+        }                                                                                          \
+        g_no_colors = with_col;                                                                    \
+    }
+
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(test_run_start, DOCTEST_EMPTY, DOCTEST_EMPTY)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(test_run_end, const TestRunStats&, in)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(test_case_start, const TestCaseData&, in)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(test_case_reenter, const TestCaseData&, in)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(test_case_end, const CurrentTestCaseStats&, in)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(test_case_exception, const TestCaseException&, in)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(subcase_start, const SubcaseSignature&, in)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(subcase_end, DOCTEST_EMPTY, DOCTEST_EMPTY)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(log_assert, const AssertData&, in)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(log_message, const MessageData&, in)
+        DOCTEST_DEBUG_OUTPUT_REPORTER_OVERRIDE(test_case_skipped, const TestCaseData&, in)
+    };
+
+    DOCTEST_THREAD_LOCAL std::ostringstream DebugOutputWindowReporter::oss;
+#endif // DOCTEST_PLATFORM_WINDOWS
+
+    // the implementation of parseOption()
+    bool parseOptionImpl(int argc, const char* const* argv, const char* pattern, String* value) {
+        // going from the end to the beginning and stopping on the first occurrence from the end
+        for(int i = argc; i > 0; --i) {
+            auto index = i - 1;
+            auto temp = std::strstr(argv[index], pattern);
+            if(temp && (value || strlen(temp) == strlen(pattern))) { //!OCLINT prefer early exits and continue
+                // eliminate matches in which the chars before the option are not '-'
+                bool noBadCharsFound = true;
+                auto curr            = argv[index];
+                while(curr != temp) {
+                    if(*curr++ != '-') {
+                        noBadCharsFound = false;
+                        break;
+                    }
+                }
+                if(noBadCharsFound && argv[index][0] == '-') {
+                    if(value) {
+                        // parsing the value of an option
+                        temp += strlen(pattern);
+                        const unsigned len = strlen(temp);
+                        if(len) {
+                            *value = temp;
+                            return true;
+                        }
+                    } else {
+                        // just a flag - no value
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
+    }
+
+    // parses an option and returns the string after the '=' character
+    bool parseOption(int argc, const char* const* argv, const char* pattern, String* value = nullptr,
+                     const String& defaultVal = String()) {
+        if(value)
+            *value = defaultVal;
+#ifndef DOCTEST_CONFIG_NO_UNPREFIXED_OPTIONS
+        // offset (normally 3 for "dt-") to skip prefix
+        if(parseOptionImpl(argc, argv, pattern + strlen(DOCTEST_CONFIG_OPTIONS_PREFIX), value))
+            return true;
+#endif // DOCTEST_CONFIG_NO_UNPREFIXED_OPTIONS
+        return parseOptionImpl(argc, argv, pattern, value);
+    }
+
+    // locates a flag on the command line
+    bool parseFlag(int argc, const char* const* argv, const char* pattern) {
+        return parseOption(argc, argv, pattern);
+    }
+
+    // parses a comma separated list of words after a pattern in one of the arguments in argv
+    bool parseCommaSepArgs(int argc, const char* const* argv, const char* pattern,
+                           std::vector<String>& res) {
+        String filtersString;
+        if(parseOption(argc, argv, pattern, &filtersString)) {
+            // tokenize with "," as a separator, unless escaped with backslash
+            std::ostringstream s;
+            auto flush = [&s, &res]() {
+                auto string = s.str();
+                if(string.size() > 0) {
+                    res.push_back(string.c_str());
+                }
+                s.str("");
+            };
+
+            bool seenBackslash = false;
+            const char* current = filtersString.c_str();
+            const char* end = current + strlen(current);
+            while(current != end) {
+                char character = *current++;
+                if(seenBackslash) {
+                    seenBackslash = false;
+                    if(character == ',' || character == '\\') {
+                        s.put(character);
+                        continue;
+                    }
+                    s.put('\\');
+                }
+                if(character == '\\') {
+                    seenBackslash = true;
+                } else if(character == ',') {
+                    flush();
+                } else {
+                    s.put(character);
+                }
+            }
+
+            if(seenBackslash) {
+                s.put('\\');
+            }
+            flush();
+            return true;
+        }
+        return false;
+    }
+
+    enum optionType
+    {
+        option_bool,
+        option_int
+    };
+
+    // parses an int/bool option from the command line
+    bool parseIntOption(int argc, const char* const* argv, const char* pattern, optionType type,
+                        int& res) {
+        String parsedValue;
+        if(!parseOption(argc, argv, pattern, &parsedValue))
+            return false;
+
+        if(type) {
+            // integer
+            // TODO: change this to use std::stoi or something else! currently it uses undefined behavior - assumes '0' on failed parse...
+            int theInt = std::atoi(parsedValue.c_str());
+            if (theInt != 0) {
+                res = theInt; //!OCLINT parameter reassignment
+                return true;
+            }
+        } else {
+            // boolean
+            const char positive[][5] = { "1", "true", "on", "yes" };  // 5 - strlen("true") + 1
+            const char negative[][6] = { "0", "false", "off", "no" }; // 6 - strlen("false") + 1
+
+            // if the value matches any of the positive/negative possibilities
+            for (unsigned i = 0; i < 4; i++) {
+                if (parsedValue.compare(positive[i], true) == 0) {
+                    res = 1; //!OCLINT parameter reassignment
+                    return true;
+                }
+                if (parsedValue.compare(negative[i], true) == 0) {
+                    res = 0; //!OCLINT parameter reassignment
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+} // namespace
+
+Context::Context(int argc, const char* const* argv)
+        : p(new detail::ContextState) {
+    parseArgs(argc, argv, true);
+    if(argc)
+        p->binary_name = argv[0];
+}
+
+Context::~Context() {
+    if(g_cs == p)
+        g_cs = nullptr;
+    delete p;
+}
+
+void Context::applyCommandLine(int argc, const char* const* argv) {
+    parseArgs(argc, argv);
+    if(argc)
+        p->binary_name = argv[0];
+}
+
+// parses args
+void Context::parseArgs(int argc, const char* const* argv, bool withDefaults) {
+    using namespace detail;
+
+    // clang-format off
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "source-file=",        p->filters[0]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "sf=",                 p->filters[0]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "source-file-exclude=",p->filters[1]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "sfe=",                p->filters[1]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "test-suite=",         p->filters[2]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "ts=",                 p->filters[2]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "test-suite-exclude=", p->filters[3]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "tse=",                p->filters[3]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "test-case=",          p->filters[4]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "tc=",                 p->filters[4]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "test-case-exclude=",  p->filters[5]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "tce=",                p->filters[5]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "subcase=",            p->filters[6]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "sc=",                 p->filters[6]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "subcase-exclude=",    p->filters[7]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "sce=",                p->filters[7]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "reporters=",          p->filters[8]);
+    parseCommaSepArgs(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "r=",                  p->filters[8]);
+    // clang-format on
+
+    int    intRes = 0;
+    String strRes;
+
+#define DOCTEST_PARSE_AS_BOOL_OR_FLAG(name, sname, var, default)                                   \
+    if(parseIntOption(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX name "=", option_bool, intRes) ||  \
+       parseIntOption(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX sname "=", option_bool, intRes))   \
+        p->var = static_cast<bool>(intRes);                                                        \
+    else if(parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX name) ||                           \
+            parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX sname))                            \
+        p->var = true;                                                                             \
+    else if(withDefaults)                                                                          \
+    p->var = default
+
+#define DOCTEST_PARSE_INT_OPTION(name, sname, var, default)                                        \
+    if(parseIntOption(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX name "=", option_int, intRes) ||   \
+       parseIntOption(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX sname "=", option_int, intRes))    \
+        p->var = intRes;                                                                           \
+    else if(withDefaults)                                                                          \
+    p->var = default
+
+#define DOCTEST_PARSE_STR_OPTION(name, sname, var, default)                                        \
+    if(parseOption(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX name "=", &strRes, default) ||        \
+       parseOption(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX sname "=", &strRes, default) ||       \
+       withDefaults)                                                                               \
+    p->var = strRes
+
+    // clang-format off
+    DOCTEST_PARSE_STR_OPTION("out", "o", out, "");
+    DOCTEST_PARSE_STR_OPTION("order-by", "ob", order_by, "file");
+    DOCTEST_PARSE_INT_OPTION("rand-seed", "rs", rand_seed, 0);
+
+    DOCTEST_PARSE_INT_OPTION("first", "f", first, 0);
+    DOCTEST_PARSE_INT_OPTION("last", "l", last, UINT_MAX);
+
+    DOCTEST_PARSE_INT_OPTION("abort-after", "aa", abort_after, 0);
+    DOCTEST_PARSE_INT_OPTION("subcase-filter-levels", "scfl", subcase_filter_levels, INT_MAX);
+
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("success", "s", success, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("case-sensitive", "cs", case_sensitive, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("exit", "e", exit, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("duration", "d", duration, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("minimal", "m", minimal, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("quiet", "q", quiet, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-throw", "nt", no_throw, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-exitcode", "ne", no_exitcode, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-run", "nr", no_run, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-intro", "ni", no_intro, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-version", "nv", no_version, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-colors", "nc", no_colors, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("force-colors", "fc", force_colors, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-breaks", "nb", no_breaks, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-skip", "ns", no_skip, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("gnu-file-line", "gfl", gnu_file_line, !bool(DOCTEST_MSVC));
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-path-filenames", "npf", no_path_in_filenames, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-line-numbers", "nln", no_line_numbers, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-debug-output", "ndo", no_debug_output, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-skipped-summary", "nss", no_skipped_summary, false);
+    DOCTEST_PARSE_AS_BOOL_OR_FLAG("no-time-in-output", "ntio", no_time_in_output, false);
+    // clang-format on
+
+    if(withDefaults) {
+        p->help             = false;
+        p->version          = false;
+        p->count            = false;
+        p->list_test_cases  = false;
+        p->list_test_suites = false;
+        p->list_reporters   = false;
+    }
+    if(parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "help") ||
+       parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "h") ||
+       parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "?")) {
+        p->help = true;
+        p->exit = true;
+    }
+    if(parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "version") ||
+       parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "v")) {
+        p->version = true;
+        p->exit    = true;
+    }
+    if(parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "count") ||
+       parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "c")) {
+        p->count = true;
+        p->exit  = true;
+    }
+    if(parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "list-test-cases") ||
+       parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "ltc")) {
+        p->list_test_cases = true;
+        p->exit            = true;
+    }
+    if(parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "list-test-suites") ||
+       parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "lts")) {
+        p->list_test_suites = true;
+        p->exit             = true;
+    }
+    if(parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "list-reporters") ||
+       parseFlag(argc, argv, DOCTEST_CONFIG_OPTIONS_PREFIX "lr")) {
+        p->list_reporters = true;
+        p->exit           = true;
+    }
+}
+
+// allows the user to add procedurally to the filters from the command line
+void Context::addFilter(const char* filter, const char* value) { setOption(filter, value); }
+
+// allows the user to clear all filters from the command line
+void Context::clearFilters() {
+    for(auto& curr : p->filters)
+        curr.clear();
+}
+
+// allows the user to override procedurally the bool options from the command line
+void Context::setOption(const char* option, bool value) {
+    setOption(option, value ? "true" : "false");
+}
+
+// allows the user to override procedurally the int options from the command line
+void Context::setOption(const char* option, int value) {
+    setOption(option, toString(value).c_str());
+}
+
+// allows the user to override procedurally the string options from the command line
+void Context::setOption(const char* option, const char* value) {
+    auto argv   = String("-") + option + "=" + value;
+    auto lvalue = argv.c_str();
+    parseArgs(1, &lvalue);
+}
+
+// users should query this in their main() and exit the program if true
+bool Context::shouldExit() { return p->exit; }
+
+void Context::setAsDefaultForAssertsOutOfTestCases() { g_cs = p; }
+
+void Context::setAssertHandler(detail::assert_handler ah) { p->ah = ah; }
+
+void Context::setCout(std::ostream* out) { p->cout = out; }
+
+static class DiscardOStream : public std::ostream
+{
+private:
+    class : public std::streambuf
+    {
+    private:
+        // allowing some buffering decreases the amount of calls to overflow
+        char buf[1024];
+
+    protected:
+        std::streamsize xsputn(const char_type*, std::streamsize count) override { return count; }
+
+        int_type overflow(int_type ch) override {
+            setp(std::begin(buf), std::end(buf));
+            return traits_type::not_eof(ch);
+        }
+    } discardBuf;
+
+public:
+    DiscardOStream()
+            : std::ostream(&discardBuf) {}
+} discardOut;
+
+// the main function that does all the filtering and test running
+int Context::run() {
+    using namespace detail;
+
+    // save the old context state in case such was setup - for using asserts out of a testing context
+    auto old_cs = g_cs;
+    // this is the current contest
+    g_cs               = p;
+    is_running_in_test = true;
+
+    g_no_colors = p->no_colors;
+    p->resetRunData();
+
+    std::fstream fstr;
+    if(p->cout == nullptr) {
+        if(p->quiet) {
+            p->cout = &discardOut;
+        } else if(p->out.size()) {
+            // to a file if specified
+            fstr.open(p->out.c_str(), std::fstream::out);
+            p->cout = &fstr;
+        } else {
+#ifndef DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+            // stdout by default
+            p->cout = &std::cout;
+#else // DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+            return EXIT_FAILURE;
+#endif // DOCTEST_CONFIG_NO_INCLUDE_IOSTREAM
+        }
+    }
+
+    FatalConditionHandler::allocateAltStackMem();
+
+    auto cleanup_and_return = [&]() {
+        FatalConditionHandler::freeAltStackMem();
+
+        if(fstr.is_open())
+            fstr.close();
+
+        // restore context
+        g_cs               = old_cs;
+        is_running_in_test = false;
+
+        // we have to free the reporters which were allocated when the run started
+        for(auto& curr : p->reporters_currently_used)
+            delete curr;
+        p->reporters_currently_used.clear();
+
+        if(p->numTestCasesFailed && !p->no_exitcode)
+            return EXIT_FAILURE;
+        return EXIT_SUCCESS;
+    };
+
+    // setup default reporter if none is given through the command line
+    if(p->filters[8].empty())
+        p->filters[8].push_back("console");
+
+    // check to see if any of the registered reporters has been selected
+    for(auto& curr : getReporters()) {
+        if(matchesAny(curr.first.second.c_str(), p->filters[8], false, p->case_sensitive))
+            p->reporters_currently_used.push_back(curr.second(*g_cs));
+    }
+
+    // TODO: check if there is nothing in reporters_currently_used
+
+    // prepend all listeners
+    for(auto& curr : getListeners())
+        p->reporters_currently_used.insert(p->reporters_currently_used.begin(), curr.second(*g_cs));
+
+#ifdef DOCTEST_PLATFORM_WINDOWS
+    if(isDebuggerActive() && p->no_debug_output == false)
+        p->reporters_currently_used.push_back(new DebugOutputWindowReporter(*g_cs));
+#endif // DOCTEST_PLATFORM_WINDOWS
+
+    // handle version, help and no_run
+    if(p->no_run || p->version || p->help || p->list_reporters) {
+        DOCTEST_ITERATE_THROUGH_REPORTERS(report_query, QueryData());
+
+        return cleanup_and_return();
+    }
+
+    std::vector<const TestCase*> testArray;
+    for(auto& curr : getRegisteredTests())
+        testArray.push_back(&curr);
+    p->numTestCases = testArray.size();
+
+    // sort the collected records
+    if(!testArray.empty()) {
+        if(p->order_by.compare("file", true) == 0) {
+            std::sort(testArray.begin(), testArray.end(), fileOrderComparator);
+        } else if(p->order_by.compare("suite", true) == 0) {
+            std::sort(testArray.begin(), testArray.end(), suiteOrderComparator);
+        } else if(p->order_by.compare("name", true) == 0) {
+            std::sort(testArray.begin(), testArray.end(), nameOrderComparator);
+        } else if(p->order_by.compare("rand", true) == 0) {
+            std::srand(p->rand_seed);
+
+            // random_shuffle implementation
+            const auto first = &testArray[0];
+            for(size_t i = testArray.size() - 1; i > 0; --i) {
+                int idxToSwap = std::rand() % (i + 1);
+
+                const auto temp = first[i];
+
+                first[i]         = first[idxToSwap];
+                first[idxToSwap] = temp;
+            }
+        } else if(p->order_by.compare("none", true) == 0) {
+            // means no sorting - beneficial for death tests which call into the executable
+            // with a specific test case in mind - we don't want to slow down the startup times
+        }
+    }
+
+    std::set<String> testSuitesPassingFilt;
+
+    bool                             query_mode = p->count || p->list_test_cases || p->list_test_suites;
+    std::vector<const TestCaseData*> queryResults;
+
+    if(!query_mode)
+        DOCTEST_ITERATE_THROUGH_REPORTERS(test_run_start, DOCTEST_EMPTY);
+
+    // invoke the registered functions if they match the filter criteria (or just count them)
+    for(auto& curr : testArray) {
+        const auto& tc = *curr;
+
+        bool skip_me = false;
+        if(tc.m_skip && !p->no_skip)
+            skip_me = true;
+
+        if(!matchesAny(tc.m_file.c_str(), p->filters[0], true, p->case_sensitive))
+            skip_me = true;
+        if(matchesAny(tc.m_file.c_str(), p->filters[1], false, p->case_sensitive))
+            skip_me = true;
+        if(!matchesAny(tc.m_test_suite, p->filters[2], true, p->case_sensitive))
+            skip_me = true;
+        if(matchesAny(tc.m_test_suite, p->filters[3], false, p->case_sensitive))
+            skip_me = true;
+        if(!matchesAny(tc.m_name, p->filters[4], true, p->case_sensitive))
+            skip_me = true;
+        if(matchesAny(tc.m_name, p->filters[5], false, p->case_sensitive))
+            skip_me = true;
+
+        if(!skip_me)
+            p->numTestCasesPassingFilters++;
+
+        // skip the test if it is not in the execution range
+        if((p->last < p->numTestCasesPassingFilters && p->first <= p->last) ||
+           (p->first > p->numTestCasesPassingFilters))
+            skip_me = true;
+
+        if(skip_me) {
+            if(!query_mode)
+                DOCTEST_ITERATE_THROUGH_REPORTERS(test_case_skipped, tc);
+            continue;
+        }
+
+        // do not execute the test if we are to only count the number of filter passing tests
+        if(p->count)
+            continue;
+
+        // print the name of the test and don't execute it
+        if(p->list_test_cases) {
+            queryResults.push_back(&tc);
+            continue;
+        }
+
+        // print the name of the test suite if not done already and don't execute it
+        if(p->list_test_suites) {
+            if((testSuitesPassingFilt.count(tc.m_test_suite) == 0) && tc.m_test_suite[0] != '\0') {
+                queryResults.push_back(&tc);
+                testSuitesPassingFilt.insert(tc.m_test_suite);
+                p->numTestSuitesPassingFilters++;
+            }
+            continue;
+        }
+
+        // execute the test if it passes all the filtering
+        {
+            p->currentTest = &tc;
+
+            p->failure_flags = TestCaseFailureReason::None;
+            p->seconds       = 0;
+
+            // reset atomic counters
+            p->numAssertsFailedCurrentTest_atomic = 0;
+            p->numAssertsCurrentTest_atomic       = 0;
+
+            p->fullyTraversedSubcases.clear();
+
+            DOCTEST_ITERATE_THROUGH_REPORTERS(test_case_start, tc);
+
+            p->timer.start();
+
+            bool run_test = true;
+
+            do {
+                // reset some of the fields for subcases (except for the set of fully passed ones)
+                p->reachedLeaf = false;
+                // May not be empty if previous subcase exited via exception.
+                p->subcaseStack.clear();
+                p->currentSubcaseDepth = 0;
+
+                p->shouldLogCurrentException = true;
+
+                // reset stuff for logging with INFO()
+                p->stringifiedContexts.clear();
+
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+                try {
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+// MSVC 2015 diagnoses fatalConditionHandler as unused (because reset() is a static method)
+DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4101) // unreferenced local variable
+                    FatalConditionHandler fatalConditionHandler; // Handle signals
+                    // execute the test
+                    tc.m_test();
+                    fatalConditionHandler.reset();
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+#ifndef DOCTEST_CONFIG_NO_EXCEPTIONS
+                } catch(const TestFailureException&) {
+                    p->failure_flags |= TestCaseFailureReason::AssertFailure;
+                } catch(...) {
+                    DOCTEST_ITERATE_THROUGH_REPORTERS(test_case_exception,
+                                                      {translateActiveException(), false});
+                    p->failure_flags |= TestCaseFailureReason::Exception;
+                }
+#endif // DOCTEST_CONFIG_NO_EXCEPTIONS
+
+                // exit this loop if enough assertions have failed - even if there are more subcases
+                if(p->abort_after > 0 &&
+                   p->numAssertsFailed + p->numAssertsFailedCurrentTest_atomic >= p->abort_after) {
+                    run_test = false;
+                    p->failure_flags |= TestCaseFailureReason::TooManyFailedAsserts;
+                }
+
+                if(!p->nextSubcaseStack.empty() && run_test)
+                    DOCTEST_ITERATE_THROUGH_REPORTERS(test_case_reenter, tc);
+                if(p->nextSubcaseStack.empty())
+                    run_test = false;
+            } while(run_test);
+
+            p->finalizeTestCaseData();
+
+            DOCTEST_ITERATE_THROUGH_REPORTERS(test_case_end, *g_cs);
+
+            p->currentTest = nullptr;
+
+            // stop executing tests if enough assertions have failed
+            if(p->abort_after > 0 && p->numAssertsFailed >= p->abort_after)
+                break;
+        }
+    }
+
+    if(!query_mode) {
+        DOCTEST_ITERATE_THROUGH_REPORTERS(test_run_end, *g_cs);
+    } else {
+        QueryData qdata;
+        qdata.run_stats = g_cs;
+        qdata.data      = queryResults.data();
+        qdata.num_data  = unsigned(queryResults.size());
+        DOCTEST_ITERATE_THROUGH_REPORTERS(report_query, qdata);
+    }
+
+    return cleanup_and_return();
+}
+
+DOCTEST_DEFINE_INTERFACE(IReporter)
+
+int IReporter::get_num_active_contexts() { return detail::g_infoContexts.size(); }
+const IContextScope* const* IReporter::get_active_contexts() {
+    return get_num_active_contexts() ? &detail::g_infoContexts[0] : nullptr;
+}
+
+int IReporter::get_num_stringified_contexts() { return detail::g_cs->stringifiedContexts.size(); }
+const String* IReporter::get_stringified_contexts() {
+    return get_num_stringified_contexts() ? &detail::g_cs->stringifiedContexts[0] : nullptr;
+}
+
+namespace detail {
+    void registerReporterImpl(const char* name, int priority, reporterCreatorFunc c, bool isReporter) {
+        if(isReporter)
+            getReporters().insert(reporterMap::value_type(reporterMap::key_type(priority, name), c));
+        else
+            getListeners().insert(reporterMap::value_type(reporterMap::key_type(priority, name), c));
+    }
+} // namespace detail
+
+} // namespace doctest
+
+#endif // DOCTEST_CONFIG_DISABLE
+
+#ifdef DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4007) // 'function' : must be 'attribute' - see issue #182
+int main(int argc, char** argv) { return doctest::Context(argc, argv).run(); }
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+#endif // DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
+DOCTEST_MSVC_SUPPRESS_WARNING_POP
+DOCTEST_GCC_SUPPRESS_WARNING_POP
+
+DOCTEST_SUPPRESS_COMMON_WARNINGS_POP
+
+#endif // DOCTEST_LIBRARY_IMPLEMENTATION
+#endif // DOCTEST_CONFIG_IMPLEMENT
+
+#ifdef DOCTEST_UNDEF_WIN32_LEAN_AND_MEAN
+#undef WIN32_LEAN_AND_MEAN
+#undef DOCTEST_UNDEF_WIN32_LEAN_AND_MEAN
+#endif // DOCTEST_UNDEF_WIN32_LEAN_AND_MEAN
+
+#ifdef DOCTEST_UNDEF_NOMINMAX
+#undef NOMINMAX
+#undef DOCTEST_UNDEF_NOMINMAX
+#endif // DOCTEST_UNDEF_NOMINMAX
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/doctest/doctest_compatibility.h b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/doctest/doctest_compatibility.h
new file mode 100644
index 00000000..e056a824
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/doctest/doctest_compatibility.h
@@ -0,0 +1,37 @@
+#ifndef DOCTEST_COMPATIBILITY
+#define DOCTEST_COMPATIBILITY
+
+#define DOCTEST_CONFIG_VOID_CAST_EXPRESSIONS
+#define DOCTEST_THREAD_LOCAL // enable single-threaded builds on XCode 6/7 - https://github.com/onqtam/doctest/issues/172
+#include "doctest.h"
+
+// Catch doesn't require a semicolon after CAPTURE but doctest does
+#undef CAPTURE
+#define CAPTURE(x) DOCTEST_CAPTURE(x);
+
+// Sections from Catch are called Subcases in doctest and don't work with std::string by default
+#undef SUBCASE
+#define SECTION(x) DOCTEST_SUBCASE(x)
+
+// convenience macro around INFO since it doesn't support temporaries (it is optimized to avoid allocations for runtime speed)
+#define INFO_WITH_TEMP_IMPL(x, var_name) const auto var_name = x; INFO(var_name) // lvalue!
+#define INFO_WITH_TEMP(x) INFO_WITH_TEMP_IMPL(x, DOCTEST_ANONYMOUS(DOCTEST_STD_STRING_))
+
+// doctest doesn't support THROWS_WITH for std::string out of the box (has to include <string>...)
+#define CHECK_THROWS_WITH_STD_STR_IMPL(expr, str, var_name)                    \
+    do {                                                                       \
+        const std::string var_name = str;                                      \
+        CHECK_THROWS_WITH(expr, var_name.c_str());                             \
+    } while (false)
+#define CHECK_THROWS_WITH_STD_STR(expr, str)                                   \
+    CHECK_THROWS_WITH_STD_STR_IMPL(expr, str, DOCTEST_ANONYMOUS(DOCTEST_STD_STRING_))
+
+// included here because for some tests in the json repository private is defined as
+// public and if no STL header is included before that then in the json include when STL
+// stuff is included the MSVC STL complains (errors) that C++ keywords are being redefined
+#include <iosfwd>
+
+// Catch does this by default
+using doctest::Approx;
+
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/fifo_map/fifo_map.hpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/fifo_map/fifo_map.hpp
new file mode 100644
index 00000000..549b71bf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/fifo_map/fifo_map.hpp
@@ -0,0 +1,530 @@
+/*
+The code is licensed under the MIT License <http://opensource.org/licenses/MIT>:
+
+Copyright (c) 2015-2017 Niels Lohmann.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef NLOHMANN_FIFO_MAP_HPP
+#define NLOHMANN_FIFO_MAP_HPP
+
+#include <algorithm>
+#include <cstdlib>
+#include <functional>
+#include <iostream>
+#include <limits>
+#include <map>
+#include <memory>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+*/
+namespace nlohmann
+{
+
+template<class Key>
+class fifo_map_compare
+{
+  public:
+    /// constructor given a pointer to a key storage
+    fifo_map_compare(std::unordered_map<Key, std::size_t>* k) : keys(k) {}
+
+    /*!
+    This function compares two keys with respect to the order in which they
+    were added to the container. For this, the mapping keys is used.
+    */
+    bool operator()(const Key& lhs, const Key& rhs) const
+    {
+        // look up timestamps for both keys
+        const auto timestamp_lhs = keys->find(lhs);
+        const auto timestamp_rhs = keys->find(rhs);
+
+        if (timestamp_lhs == keys->end())
+        {
+            // timestamp for lhs not found - cannot be smaller than for rhs
+            return false;
+        }
+
+        if (timestamp_rhs == keys->end())
+        {
+            // timestamp for rhs not found - timestamp for lhs is smaller
+            return true;
+        }
+
+        // compare timestamps
+        return timestamp_lhs->second < timestamp_rhs->second;
+    }
+
+    void add_key(const Key& key)
+    {
+        keys->insert({key, timestamp++});
+    }
+
+    void remove_key(const Key& key)
+    {
+        keys->erase(key);
+    }
+
+  private:
+    /// pointer to a mapping from keys to insertion timestamps
+    std::unordered_map<Key, std::size_t>* keys = nullptr;
+    /// the next valid insertion timestamp
+    size_t timestamp = 1;
+};
+
+
+template <
+    class Key,
+    class T,
+    class Compare = fifo_map_compare<Key>,
+    class Allocator = std::allocator<std::pair<const Key, T>>
+    > class fifo_map // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions,-warnings-as-errors)
+{
+  public:
+    using key_type = Key;
+    using mapped_type = T;
+    using value_type = std::pair<const Key, T>;
+    using size_type = std::size_t;
+    using difference_type = std::ptrdiff_t;
+    using key_compare = Compare;
+    using allocator_type = Allocator;
+    using reference = value_type&;
+    using const_reference = const value_type&;
+    using pointer = typename std::allocator_traits<Allocator>::pointer;
+    using const_pointer = typename std::allocator_traits<Allocator>::const_pointer;
+
+    using internal_map_type = std::map<Key, T, Compare, Allocator>;
+
+    using iterator = typename internal_map_type::iterator;
+    using const_iterator = typename internal_map_type::const_iterator;
+    using reverse_iterator = typename internal_map_type::reverse_iterator;
+    using const_reverse_iterator = typename internal_map_type::const_reverse_iterator;
+
+  public:
+    /// default constructor
+    fifo_map() : m_keys(), m_compare(&m_keys), m_map(m_compare) {}
+
+    /// copy constructor
+    fifo_map(const fifo_map &f) : m_keys(f.m_keys), m_compare(&m_keys), m_map(f.m_map.begin(), f.m_map.end(), m_compare) {}
+
+    /// constructor for a range of elements
+    template<class InputIterator>
+    fifo_map(InputIterator first, InputIterator last)
+        : m_keys(), m_compare(&m_keys), m_map(m_compare)
+    {
+        for (auto it = first; it != last; ++it)
+        {
+            insert(*it);
+        }
+    }
+
+    /// constructor for a list of elements
+    fifo_map(std::initializer_list<value_type> init) : fifo_map()
+    {
+        for (auto x : init)
+        {
+            insert(x);
+        }
+    }
+
+
+    /*
+     * Element access
+     */
+
+    /// access specified element with bounds checking
+    T& at(const Key& key)
+    {
+        return m_map.at(key);
+    }
+
+    /// access specified element with bounds checking
+    const T& at(const Key& key) const
+    {
+        return m_map.at(key);
+    }
+
+    /// access specified element
+    T& operator[](const Key& key)
+    {
+        m_compare.add_key(key);
+        return m_map[key];
+    }
+
+    /// access specified element
+    T& operator[](Key&& key)
+    {
+        m_compare.add_key(key);
+        return m_map[key];
+    }
+
+
+    /*
+     * Iterators
+     */
+
+    /// returns an iterator to the beginning
+    iterator begin() noexcept
+    {
+        return m_map.begin();
+    }
+
+    /// returns an iterator to the end
+    iterator end() noexcept
+    {
+        return m_map.end();
+    }
+
+    /// returns an iterator to the beginning
+    const_iterator begin() const noexcept
+    {
+        return m_map.begin();
+    }
+
+    /// returns an iterator to the end
+    const_iterator end() const noexcept
+    {
+        return m_map.end();
+    }
+
+    /// returns an iterator to the beginning
+    const_iterator cbegin() const noexcept
+    {
+        return m_map.cbegin();
+    }
+
+    /// returns an iterator to the end
+    const_iterator cend() const noexcept
+    {
+        return m_map.cend();
+    }
+
+    /// returns a reverse iterator to the beginning
+    reverse_iterator rbegin() noexcept
+    {
+        return m_map.rbegin();
+    }
+
+    /// returns a reverse iterator to the end
+    reverse_iterator rend() noexcept
+    {
+        return m_map.rend();
+    }
+
+    /// returns a reverse iterator to the beginning
+    const_reverse_iterator rbegin() const noexcept
+    {
+        return m_map.rbegin();
+    }
+
+    /// returns a reverse iterator to the end
+    const_reverse_iterator rend() const noexcept
+    {
+        return m_map.rend();
+    }
+
+    /// returns a reverse iterator to the beginning
+    const_reverse_iterator crbegin() const noexcept
+    {
+        return m_map.crbegin();
+    }
+
+    /// returns a reverse iterator to the end
+    const_reverse_iterator crend() const noexcept
+    {
+        return m_map.crend();
+    }
+
+
+    /*
+     * Capacity
+     */
+
+    /// checks whether the container is empty
+    bool empty() const noexcept
+    {
+        return m_map.empty();
+    }
+
+    /// returns the number of elements
+    size_type size() const noexcept
+    {
+        return m_map.size();
+    }
+
+    /// returns the maximum possible number of elements
+    size_type max_size() const noexcept
+    {
+        return m_map.max_size();
+    }
+
+
+    /*
+     * Modifiers
+     */
+
+    /// clears the contents
+    void clear() noexcept
+    {
+        m_map.clear();
+        m_keys.clear();
+    }
+
+    /// insert value
+    std::pair<iterator, bool> insert(const value_type& value)
+    {
+        m_compare.add_key(value.first);
+        return m_map.insert(value);
+    }
+
+    /// insert value
+    template<class P>
+    std::pair<iterator, bool> insert( P&& value ) // NOLINT(cppcoreguidelines-missing-std-forward)
+    {
+        m_compare.add_key(value.first);
+        return m_map.insert(value);
+    }
+
+    /// insert value with hint
+    iterator insert(const_iterator hint, const value_type& value)
+    {
+        m_compare.add_key(value.first);
+        return m_map.insert(hint, value);
+    }
+
+    /// insert value with hint
+    iterator insert(const_iterator hint, value_type&& value)
+    {
+        m_compare.add_key(value.first);
+        return m_map.insert(hint, value);
+    }
+
+    /// insert value range
+    template<class InputIt>
+    void insert(InputIt first, InputIt last)
+    {
+        for (const_iterator it = first; it != last; ++it)
+        {
+            m_compare.add_key(it->first);
+        }
+
+        m_map.insert(first, last);
+    }
+
+    /// insert value list
+    void insert(std::initializer_list<value_type> ilist)
+    {
+        for (auto value : ilist)
+        {
+            m_compare.add_key(value.first);
+        }
+
+        m_map.insert(ilist);
+    }
+
+    /// constructs element in-place
+    template<class... Args>
+    std::pair<iterator, bool> emplace(Args&& ... args)
+    {
+        typename fifo_map::value_type value(std::forward<Args>(args)...);
+        m_compare.add_key(value.first);
+        return m_map.emplace(std::move(value));
+    }
+
+    /// constructs element in-place with hint
+    template<class... Args>
+    iterator emplace_hint(const_iterator hint, Args&& ... args)
+    {
+        typename fifo_map::value_type value(std::forward<Args>(args)...);
+        m_compare.add_key(value.first);
+        return m_map.emplace_hint(hint, std::move(value));
+    }
+
+    /// remove element at position
+    iterator erase(const_iterator pos)
+    {
+        m_compare.remove_key(pos->first);
+        return m_map.erase(pos);
+    }
+
+    /// remove elements in range
+    iterator erase(const_iterator first, const_iterator last)
+    {
+        for (const_iterator it = first; it != last; ++it)
+        {
+            m_compare.remove_key(it->first);
+        }
+
+        return m_map.erase(first, last);
+    }
+
+    /// remove elements with key
+    size_type erase(const key_type& key)
+    {
+        size_type res = m_map.erase(key);
+
+        if (res > 0)
+        {
+            m_compare.remove_key(key);
+        }
+
+        return res;
+    }
+
+    /// swaps the contents
+    void swap(fifo_map& other) // NOLINT(cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+    {
+        std::swap(m_map, other.m_map);
+        std::swap(m_compare, other.m_compare);
+        std::swap(m_keys, other.m_keys);
+    }
+
+
+    /*
+     * Lookup
+     */
+
+    /// returns the number of elements matching specific key
+    size_type count(const Key& key) const
+    {
+        return m_map.count(key);
+    }
+
+    /// finds element with specific key
+    iterator find(const Key& key)
+    {
+        return m_map.find(key);
+    }
+
+    /// finds element with specific key
+    const_iterator find(const Key& key) const
+    {
+        return m_map.find(key);
+    }
+
+    /// returns range of elements matching a specific key
+    std::pair<iterator, iterator> equal_range(const Key& key)
+    {
+        return m_map.equal_range(key);
+    }
+
+    /// returns range of elements matching a specific key
+    std::pair<const_iterator, const_iterator> equal_range(const Key& key) const
+    {
+        return m_map.equal_range(key);
+    }
+
+    /// returns an iterator to the first element not less than the given key
+    iterator lower_bound(const Key& key)
+    {
+        return m_map.lower_bound(key);
+    }
+
+    /// returns an iterator to the first element not less than the given key
+    const_iterator lower_bound(const Key& key) const
+    {
+        return m_map.lower_bound(key);
+    }
+
+    /// returns an iterator to the first element greater than the given key
+    iterator upper_bound(const Key& key)
+    {
+        return m_map.upper_bound(key);
+    }
+
+    /// returns an iterator to the first element greater than the given key
+    const_iterator upper_bound(const Key& key) const
+    {
+        return m_map.upper_bound(key);
+    }
+
+
+    /*
+     * Observers
+     */
+
+    /// returns the function that compares keys
+    key_compare key_comp() const
+    {
+        return m_compare;
+    }
+
+
+    /*
+     * Non-member functions
+     */
+
+    friend bool operator==(const fifo_map& lhs, const fifo_map& rhs)
+    {
+        return lhs.m_map == rhs.m_map;
+    }
+
+    friend bool operator!=(const fifo_map& lhs, const fifo_map& rhs)
+    {
+        return lhs.m_map != rhs.m_map;
+    }
+
+    friend bool operator<(const fifo_map& lhs, const fifo_map& rhs)
+    {
+        return lhs.m_map < rhs.m_map;
+    }
+
+    friend bool operator<=(const fifo_map& lhs, const fifo_map& rhs)
+    {
+        return lhs.m_map <= rhs.m_map;
+    }
+
+    friend bool operator>(const fifo_map& lhs, const fifo_map& rhs)
+    {
+        return lhs.m_map > rhs.m_map;
+    }
+
+    friend bool operator>=(const fifo_map& lhs, const fifo_map& rhs)
+    {
+        return lhs.m_map >= rhs.m_map;
+    }
+
+  private:
+    /// the keys
+    std::unordered_map<Key, std::size_t> m_keys;
+    /// the comparison object
+    Compare m_compare;
+    /// the internal data structure
+    internal_map_type m_map;
+};
+
+} // namespace nlohmann
+
+// specialization of std::swap
+namespace std // NOLINT(cert-dcl58-cpp,-warnings-as-errors)
+{
+template <class Key, class T, class Compare, class Allocator>
+inline void swap(nlohmann::fifo_map<Key, T, Compare, Allocator>& m1, // NOLINT(cert-dcl58-cpp,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
+                 nlohmann::fifo_map<Key, T, Compare, Allocator>& m2)
+{
+    m1.swap(m2);
+}
+} // namespace std
+
+#endif
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/imapdl/filterbr.py b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/imapdl/filterbr.py
new file mode 100644
index 00000000..e8714c7e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tests/thirdparty/imapdl/filterbr.py
@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+
+# 2017, Georg Sauthoff <mail@gms.tf>, GPLv3
+
+import sys
+
+def skip_comments(lines):
+  state = 0
+  for line in lines:
+    n = len(line)
+    l = ''
+    p = 0
+    while p < n:
+      if state == 0:
+        a = line.find('//', p)
+        b = line.find('/*', p)
+        if a > -1 and (a < b or b == -1):
+          l += line[p:a]
+          p = n
+        elif b > -1 and (b < a or a == -1):
+          l += line[p:b]
+          p = b+2
+          state = 1
+        else:
+          l += line[p:]
+          p = n
+      elif state == 1:
+        a = line.rfind('*/', p)
+        if a == -1:
+          p = n
+        else:
+          p = a + 2
+          state = 0
+    yield l
+
+def cond_lines(lines):
+  state = 0
+  pcnt = 0
+  for nr, line in enumerate(lines, 1):
+    if not line:
+      continue
+    n = len(line)
+    p = 0
+    do_yield = False
+    while p < n:
+      if state == 0:
+        p = line.find('if', p)
+        if p == -1:
+          p = n
+          continue
+        if (p == 0 or not line[p-1].isalpha()) \
+            and (p+2 == len(line) or not line[p+2].isalpha()):
+          do_yield = True
+          state = 1
+        p += 2
+      elif state == 1:
+        do_yield = True
+        p = line.find('(', p)
+        if p == -1:
+          p = n
+        else:
+          p += 1
+          state = 2
+          pcnt = 1
+      elif state == 2:
+        do_yield = True
+        for p in range(p, n):
+          if line[p] == '(':
+            pcnt += 1
+          elif line[p] == ')':
+            pcnt -= 1
+          if not pcnt:
+            state = 0
+            break
+        p += 1
+    if do_yield:
+      yield nr
+
+def cond_lines_from_file(filename):
+  with open(filename) as f:
+    yield from cond_lines(skip_comments(f))
+
+def filter_lcov_trace(lines):
+  nrs = set()
+  for line in lines:
+    if line.startswith('SF:'):
+      nrs = set(cond_lines_from_file(line[3:-1]))
+    elif line.startswith('BRDA:'):
+      xs = line[5:].split(',')
+      nr = int(xs[0]) if xs else 0
+      if nr not in nrs:
+        continue
+    yield line
+
+def filter_lcov_trace_file(s_filename, d_file):
+  with open(s_filename) as f:
+    for l in filter_lcov_trace(f):
+      print(l, end='', file=d_file)
+
+if __name__ == '__main__':
+  #for l in cond_lines_from_file(sys.argv[1]):
+  #  print(l)
+
+  filter_lcov_trace_file(sys.argv[1], sys.stdout)
+
+  #with open(sys.argv[1]) as f:
+  #  for l in skip_comments(f):
+  #    print(l)
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/CHANGES.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/CHANGES.md
new file mode 100644
index 00000000..728b9331
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/CHANGES.md
@@ -0,0 +1,10 @@
+The following changes have been made to the code with respect to <https://github.com/edlund/amalgamate/commit/c91f07eea1133aa184f652b8f1398eaf03586208>:
+
+- Resolved inspection results from PyCharm:
+  - replaced tabs with spaces
+  - added encoding annotation
+  - reindented file to remove trailing whitespaces
+  - unused import `sys`
+  - membership check
+  - made function from `_is_within`
+  - removed unused variable `actual_path`
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/README.md
new file mode 100644
index 00000000..975ca0bd
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/README.md
@@ -0,0 +1,66 @@
+
+# amalgamate.py - Amalgamate C source and header files
+
+Origin: https://bitbucket.org/erikedlund/amalgamate
+
+Mirror: https://github.com/edlund/amalgamate
+
+`amalgamate.py` aims to make it easy to use SQLite-style C source and header
+amalgamation in projects.
+
+For more information, please refer to: http://sqlite.org/amalgamation.html
+
+## Here be dragons
+
+`amalgamate.py` is quite dumb, it only knows the bare minimum about C code
+required in order to be able to handle trivial include directives. It can
+produce weird results for unexpected code.
+
+Things to be aware of:
+
+`amalgamate.py` will not handle complex include directives correctly:
+
+        #define HEADER_PATH "path/to/header.h"
+        #include HEADER_PATH
+
+In the above example, `path/to/header.h` will not be included in the
+amalgamation (HEADER_PATH is never expanded).
+
+`amalgamate.py` makes the assumption that each source and header file which
+is not empty will end in a new-line character, which is not immediately
+preceded by a backslash character (see 5.1.1.2p1.2 of ISO C99).
+
+`amalgamate.py` should be usable with C++ code, but raw string literals from
+C++11 will definitely cause problems:
+
+        R"delimiter(Terrible raw \ data " #include <sneaky.hpp>)delimiter"
+        R"delimiter(Terrible raw \ data " escaping)delimiter"
+
+In the examples above, `amalgamate.py` will stop parsing the raw string literal
+when it encounters the first quotation mark, which will produce unexpected
+results.
+
+## Installing amalgamate.py
+
+Python v.2.7.0 or higher is required.
+
+`amalgamate.py` can be tested and installed using the following commands:
+
+        ./test.sh && sudo -k cp ./amalgamate.py /usr/local/bin/
+
+## Using amalgamate.py
+
+        amalgamate.py [-v] -c path/to/config.json -s path/to/source/dir \
+                [-p path/to/prologue.(c|h)]
+
+ * The `-c, --config` option should specify the path to a JSON config file which
+   lists the source files, include paths and where to write the resulting
+   amalgamation. Have a look at `test/source.c.json` and `test/include.h.json`
+   to see two examples.
+
+ * The `-s, --source` option should specify the path to the source directory.
+   This is useful for supporting separate source and build directories.
+
+ * The `-p, --prologue` option should specify the path to a file which will be
+   added to the beginning of the amalgamation. It is optional.
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/amalgamate.py b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/amalgamate.py
new file mode 100644
index 00000000..0aed7c90
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/amalgamate.py
@@ -0,0 +1,299 @@
+#!/usr/bin/env python3
+# coding=utf-8
+
+# amalgamate.py - Amalgamate C source and header files.
+# Copyright (c) 2012, Erik Edlund <erik.edlund@32767.se>
+# 
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+# 
+#  * Redistributions of source code must retain the above copyright notice,
+#  this list of conditions and the following disclaimer.
+# 
+#  * Redistributions in binary form must reproduce the above copyright notice,
+#  this list of conditions and the following disclaimer in the documentation
+#  and/or other materials provided with the distribution.
+# 
+#  * Neither the name of Erik Edlund, nor the names of its contributors may
+#  be used to endorse or promote products derived from this software without
+#  specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import argparse
+import datetime
+import json
+import os
+import re
+
+
+class Amalgamation(object):
+
+    # Prepends self.source_path to file_path if needed.
+    def actual_path(self, file_path):
+        if not os.path.isabs(file_path):
+            file_path = os.path.join(self.source_path, file_path)
+        return file_path
+
+    # Search included file_path in self.include_paths and
+    # in source_dir if specified.
+    def find_included_file(self, file_path, source_dir):
+        search_dirs = self.include_paths[:]
+        if source_dir:
+            search_dirs.insert(0, source_dir)
+
+        for search_dir in search_dirs:
+            search_path = os.path.join(search_dir, file_path)
+            if os.path.isfile(self.actual_path(search_path)):
+                return search_path
+        return None
+
+    def __init__(self, args):
+        with open(args.config, 'r') as f:
+            config = json.loads(f.read())
+            for key in config:
+                setattr(self, key, config[key])
+
+            self.verbose = args.verbose == "yes"
+            self.prologue = args.prologue
+            self.source_path = args.source_path
+            self.included_files = []
+
+    # Generate the amalgamation and write it to the target file.
+    def generate(self):
+        amalgamation = ""
+
+        if self.prologue:
+            with open(self.prologue, 'r') as f:
+                amalgamation += datetime.datetime.now().strftime(f.read())
+
+        if self.verbose:
+            print("Config:")
+            print(" target        = {0}".format(self.target))
+            print(" working_dir   = {0}".format(os.getcwd()))
+            print(" include_paths = {0}".format(self.include_paths))
+        print("Creating amalgamation:")
+        for file_path in self.sources:
+            # Do not check the include paths while processing the source
+            # list, all given source paths must be correct.
+            # actual_path = self.actual_path(file_path)
+            print(" - processing \"{0}\"".format(file_path))
+            t = TranslationUnit(file_path, self, True)
+            amalgamation += t.content
+
+        with open(self.target, 'w') as f:
+            f.write(amalgamation)
+
+        print("...done!\n")
+        if self.verbose:
+            print("Files processed: {0}".format(self.sources))
+            print("Files included: {0}".format(self.included_files))
+        print("")
+
+
+def _is_within(match, matches):
+    for m in matches:
+        if match.start() > m.start() and \
+                match.end() < m.end():
+            return True
+    return False
+
+
+class TranslationUnit(object):
+    # // C++ comment.
+    cpp_comment_pattern = re.compile(r"//.*?\n")
+
+    # /* C comment. */
+    c_comment_pattern = re.compile(r"/\*.*?\*/", re.S)
+
+    # "complex \"stri\\\ng\" value".
+    string_pattern = re.compile("[^']" r'".*?(?<=[^\\])"', re.S)
+
+    # Handle simple include directives. Support for advanced
+    # directives where macros and defines needs to expanded is
+    # not a concern right now.
+    include_pattern = re.compile(
+        r'#\s*include\s+(<|")(?P<path>.*?)("|>)', re.S)
+
+    # #pragma once
+    pragma_once_pattern = re.compile(r'#\s*pragma\s+once', re.S)
+
+    # Search for pattern in self.content, add the match to
+    # contexts if found and update the index accordingly.
+    def _search_content(self, index, pattern, contexts):
+        match = pattern.search(self.content, index)
+        if match:
+            contexts.append(match)
+            return match.end()
+        return index + 2
+
+    # Return all the skippable contexts, i.e., comments and strings
+    def _find_skippable_contexts(self):
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = []
+
+        # Walk through the content char by char, and try to grab
+        # skippable contexts using regular expressions when found.
+        i = 1
+        content_len = len(self.content)
+        while i < content_len:
+            j = i - 1
+            current = self.content[i]
+            previous = self.content[j]
+
+            if current == '"':
+                # String value.
+                i = self._search_content(j, self.string_pattern,
+                                         skippable_contexts)
+            elif current == '*' and previous == '/':
+                # C style comment.
+                i = self._search_content(j, self.c_comment_pattern,
+                                         skippable_contexts)
+            elif current == '/' and previous == '/':
+                # C++ style comment.
+                i = self._search_content(j, self.cpp_comment_pattern,
+                                         skippable_contexts)
+            else:
+                # Skip to the next char.
+                i += 1
+
+        return skippable_contexts
+
+    # Returns True if the match is within list of other matches
+
+    # Removes pragma once from content
+    def _process_pragma_once(self):
+        content_len = len(self.content)
+        if content_len < len("#include <x>"):
+            return 0
+
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = self._find_skippable_contexts()
+
+        pragmas = []
+        pragma_once_match = self.pragma_once_pattern.search(self.content)
+        while pragma_once_match:
+            if not _is_within(pragma_once_match, skippable_contexts):
+                pragmas.append(pragma_once_match)
+
+            pragma_once_match = self.pragma_once_pattern.search(self.content,
+                                                                pragma_once_match.end())
+
+        # Handle all collected pragma once directives.
+        prev_end = 0
+        tmp_content = ''
+        for pragma_match in pragmas:
+            tmp_content += self.content[prev_end:pragma_match.start()]
+            prev_end = pragma_match.end()
+        tmp_content += self.content[prev_end:]
+        self.content = tmp_content
+
+    # Include all trivial #include directives into self.content.
+    def _process_includes(self):
+        content_len = len(self.content)
+        if content_len < len("#include <x>"):
+            return 0
+
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = self._find_skippable_contexts()
+
+        # Search for include directives in the content, collect those
+        # which should be included into the content.
+        includes = []
+        include_match = self.include_pattern.search(self.content)
+        while include_match:
+            if not _is_within(include_match, skippable_contexts):
+                include_path = include_match.group("path")
+                search_same_dir = include_match.group(1) == '"'
+                found_included_path = self.amalgamation.find_included_file(
+                    include_path, self.file_dir if search_same_dir else None)
+                if found_included_path:
+                    includes.append((include_match, found_included_path))
+
+            include_match = self.include_pattern.search(self.content,
+                                                        include_match.end())
+
+        # Handle all collected include directives.
+        prev_end = 0
+        tmp_content = ''
+        for include in includes:
+            include_match, found_included_path = include
+            tmp_content += self.content[prev_end:include_match.start()]
+            tmp_content += "// {0}\n".format(include_match.group(0))
+            if found_included_path not in self.amalgamation.included_files:
+                t = TranslationUnit(found_included_path, self.amalgamation, False)
+                tmp_content += t.content
+            prev_end = include_match.end()
+        tmp_content += self.content[prev_end:]
+        self.content = tmp_content
+
+        return len(includes)
+
+    # Make all content processing
+    def _process(self):
+        if not self.is_root:
+            self._process_pragma_once()
+        self._process_includes()
+
+    def __init__(self, file_path, amalgamation, is_root):
+        self.file_path = file_path
+        self.file_dir = os.path.dirname(file_path)
+        self.amalgamation = amalgamation
+        self.is_root = is_root
+
+        self.amalgamation.included_files.append(self.file_path)
+
+        actual_path = self.amalgamation.actual_path(file_path)
+        if not os.path.isfile(actual_path):
+            raise IOError("File not found: \"{0}\"".format(file_path))
+        with open(actual_path, 'r') as f:
+            self.content = f.read()
+            self._process()
+
+
+def main():
+    description = "Amalgamate C source and header files."
+    usage = " ".join([
+        "amalgamate.py",
+        "[-v]",
+        "-c path/to/config.json",
+        "-s path/to/source/dir",
+        "[-p path/to/prologue.(c|h)]"
+    ])
+    argsparser = argparse.ArgumentParser(
+        description=description, usage=usage)
+
+    argsparser.add_argument("-v", "--verbose", dest="verbose",
+                            choices=["yes", "no"], metavar="", help="be verbose")
+
+    argsparser.add_argument("-c", "--config", dest="config",
+                            required=True, metavar="", help="path to a JSON config file")
+
+    argsparser.add_argument("-s", "--source", dest="source_path",
+                            required=True, metavar="", help="source code path")
+
+    argsparser.add_argument("-p", "--prologue", dest="prologue",
+                            required=False, metavar="", help="path to a C prologue file")
+
+    amalgamation = Amalgamation(argsparser.parse_args())
+    amalgamation.generate()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/config_json.json b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/config_json.json
new file mode 100644
index 00000000..32fc21cf
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/config_json.json
@@ -0,0 +1,8 @@
+{
+	"project": "JSON for Modern C++",
+	"target": "single_include/nlohmann/json.hpp",
+	"sources": [
+		"include/nlohmann/json.hpp"
+	],
+	"include_paths": ["include"]
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/config_json_fwd.json b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/config_json_fwd.json
new file mode 100644
index 00000000..695929c1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/amalgamate/config_json_fwd.json
@@ -0,0 +1,8 @@
+{
+	"project": "JSON for Modern C++",
+	"target": "single_include/nlohmann/json_fwd.hpp",
+	"sources": [
+		"include/nlohmann/json_fwd.hpp"
+	],
+	"include_paths": ["include"]
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/gdb_pretty_printer/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/gdb_pretty_printer/README.md
new file mode 100644
index 00000000..c1a3651d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/gdb_pretty_printer/README.md
@@ -0,0 +1,78 @@
+# GDB Pretty Printer
+
+File [nlohmann-json.py](nlohmann-json.py) contains a pretty printer for GDB for JSON values of this library. It was originally published as [Gist](https://gist.github.com/ssbssa/60da5339c6e6036b2afce17de06050ea#file-nlohmann-json-py) by [Hannes Domani](https://github.com/ssbssa).
+
+## How to use
+
+- Add line
+  
+  ```
+  source /path/to/nlohmann-json.py
+  ```
+  
+  to `~/.gdbinit`. Note you must replace `/path/to` with whatever path you stored file `nlohmann-json.py`.
+- In GDB, debug as usual. When you want to pretty-print a JSON value `var`, type
+  
+  ```
+  p -pretty on -array on -- var
+  ```
+  
+  The result should look like
+  
+  ```
+    $1 = std::map with 5 elements = {
+        ["Baptiste"] = std::map with 1 element = {
+            ["first"] = "second"
+        },
+        ["Emmanuel"] = std::vector of length 3, capacity 3 = {
+            3,
+            "25",
+            0.5
+        },
+        ["Jean"] = 0.7,
+        ["Zorg"] = std::map with 8 elements = {
+            ["array"] = std::vector of length 3, capacity 3 = {
+                1,
+                0,
+                2
+            },
+            ["awesome_str"] = "bleh",
+            ["bool"] = true,
+            ["flex"] = 0.2,
+            ["float"] = 5.22,
+            ["int"] = 5,
+            ["nested"] = std::map with 1 element = {
+                ["bar"] = "barz"
+            },
+            ["trap "] = "you fell"
+        },
+        ["empty"] = nlohmann::detail::value_t::null
+    }
+    ```
+
+Requires Python 3.9+. Last tested with GDB 12.1.
+See [#1952](https://github.com/nlohmann/json/issues/1952) for more information. Please post questions there.
+
+## Copyright
+
+MIT License
+
+Copyright (C) 2020 [Hannes Domani](https://github.com/ssbssa)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/gdb_pretty_printer/nlohmann-json.py b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/gdb_pretty_printer/nlohmann-json.py
new file mode 100644
index 00000000..3984f592
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/gdb_pretty_printer/nlohmann-json.py
@@ -0,0 +1,32 @@
+import gdb
+import re
+
+ns_pattern = re.compile(r'nlohmann(::json_abi(?P<tags>\w*)(_v(?P<v_major>\d+)_(?P<v_minor>\d+)_(?P<v_patch>\d+))?)?::(?P<name>.+)')
+class JsonValuePrinter:
+    "Print a json-value"
+
+    def __init__(self, val):
+        self.val = val
+
+    def to_string(self):
+        if self.val.type.strip_typedefs().code == gdb.TYPE_CODE_FLT:
+            return ("%.6f" % float(self.val)).rstrip("0")
+        return self.val
+
+def json_lookup_function(val):
+    if m := ns_pattern.fullmatch(str(val.type.strip_typedefs().name)):
+      name = m.group('name')
+      if name and name.startswith('basic_json<') and name.endswith('>'):
+          m = ns_pattern.fullmatch(str(val["m_data"]['m_type']))
+          t = m.group('name')
+          if t and t.startswith('detail::value_t::'):
+              try:
+                  union_val = val["m_data"]['m_value'][t.removeprefix('detail::value_t::')]
+                  if union_val.type.code == gdb.TYPE_CODE_PTR:
+                      return gdb.default_visualizer(union_val.dereference())
+                  else:
+                      return JsonValuePrinter(union_val)
+              except Exception:
+                  return JsonValuePrinter(val["m_data"]['m_type'])
+
+gdb.pretty_printers.append(json_lookup_function)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/README.md
new file mode 100644
index 00000000..b4d3a7d7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/README.md
@@ -0,0 +1,10 @@
+generate_natvis.py
+==================
+
+Generate the Natvis debugger visualization file for all supported namespace combinations.
+
+## Usage
+
+```
+./generate_natvis.py --version X.Y.Z output_directory/
+```
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/generate_natvis.py b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/generate_natvis.py
new file mode 100644
index 00000000..9266050c
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/generate_natvis.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+import argparse
+import itertools
+import jinja2
+import os
+import re
+import sys
+
+def semver(v):
+    if not re.fullmatch(r'\d+\.\d+\.\d+', v):
+        raise ValueError
+    return v
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--version', required=True, type=semver, help='Library version number')
+    parser.add_argument('output', help='Output directory for nlohmann_json.natvis')
+    args = parser.parse_args()
+
+    namespaces = ['nlohmann']
+    abi_prefix = 'json_abi'
+    abi_tags = ['_diag', '_ldvcmp']
+    version = '_v' + args.version.replace('.', '_')
+    inline_namespaces = []
+
+    # generate all combinations of inline namespace names
+    for n in range(0, len(abi_tags) + 1):
+        for tags in itertools.combinations(abi_tags, n):
+            ns = abi_prefix + ''.join(tags)
+            inline_namespaces += [ns, ns + version]
+
+    namespaces += [f'{namespaces[0]}::{ns}' for ns in inline_namespaces]
+
+    env = jinja2.Environment(loader=jinja2.FileSystemLoader(searchpath=sys.path[0]), autoescape=True, trim_blocks=True,
+                                                            lstrip_blocks=True, keep_trailing_newline=True)
+    template = env.get_template('nlohmann_json.natvis.j2')
+    natvis = template.render(namespaces=namespaces)
+
+    with open(os.path.join(args.output, 'nlohmann_json.natvis'), 'w') as f:
+        f.write(natvis)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/nlohmann_json.natvis.j2 b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/nlohmann_json.natvis.j2
new file mode 100644
index 00000000..c3eafa54
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/generate_natvis/nlohmann_json.natvis.j2
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- * * * * * * * * AUTO-GENERATED FILE  * * * * * * * * -->
+<!-- Edit ./tools/generate_natvis/nlohmann_json.natvis.j2 -->
+<!-- * * * * * * * * AUTO-GENERATED FILE  * * * * * * * * -->
+
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+{% for ns in namespaces %}
+    <!-- Namespace {{ ns }} -->
+    <Type Name="{{ ns }}::basic_json&lt;*&gt;">
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::null">null</DisplayString>
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::object">{*(m_data.m_value.object)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::array">{*(m_data.m_value.array)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::string">{*(m_data.m_value.string)}</DisplayString>
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::boolean">{m_data.m_value.boolean}</DisplayString>
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::number_integer">{m_data.m_value.number_integer}</DisplayString>
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::number_unsigned">{m_data.m_value.number_unsigned}</DisplayString>
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::number_float">{m_data.m_value.number_float}</DisplayString>
+        <DisplayString Condition="m_data.m_type == {{ ns }}::detail::value_t::discarded">discarded</DisplayString>
+        <Expand>
+            <ExpandedItem Condition="m_data.m_type == {{ ns }}::detail::value_t::object">
+                *(m_data.m_value.object),view(simple)
+            </ExpandedItem>
+            <ExpandedItem Condition="m_data.m_type == {{ ns }}::detail::value_t::array">
+                *(m_data.m_value.array),view(simple)
+            </ExpandedItem>
+        </Expand>
+    </Type>
+
+    <!-- Skip the pair first/second members in the treeview while traversing a map.
+         Only works in VS 2015 Update 2 and beyond using the new visualization -->
+    <Type Name="std::pair&lt;*, {{ ns }}::basic_json&lt;*&gt;&gt;" IncludeView="MapHelper">
+        <DisplayString>{second}</DisplayString>
+        <Expand>
+            <ExpandedItem>second</ExpandedItem>
+        </Expand>
+    </Type>
+
+{% endfor %}
+</AutoVisualizer>
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/macro_builder/main.cpp b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/macro_builder/main.cpp
new file mode 100644
index 00000000..e676daac
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/macro_builder/main.cpp
@@ -0,0 +1,43 @@
+#include <cstdlib>
+#include <iostream>
+#include <sstream>
+
+using namespace std;
+
+void build_code(int max_args)
+{
+    stringstream ss;
+    ss << "#define NLOHMANN_JSON_EXPAND( x ) x" << endl;
+    ss << "#define NLOHMANN_JSON_GET_MACRO(";
+    for (int i = 0 ; i < max_args ; i++)
+        ss << "_" << i + 1 << ", ";
+    ss << "NAME,...) NAME" << endl;
+    
+    ss << "#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \\" << endl;
+    for (int i = max_args ; i > 1 ; i--)
+        ss << "NLOHMANN_JSON_PASTE" << i << ", \\" << endl;
+    ss << "NLOHMANN_JSON_PASTE1)(__VA_ARGS__))" << endl;
+    
+    ss << "#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)" << endl;
+    for (int i = 3 ; i <= max_args ; i++)
+    {
+        ss << "#define NLOHMANN_JSON_PASTE" << i << "(func, "; 
+        for (int j = 1 ; j < i -1 ; j++)
+            ss << "v" << j << ", "; 
+        ss << "v" << i-1 << ") NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE" << i-1 << "(func, ";
+        for (int j = 2 ; j < i-1 ; j++)
+            ss << "v" << j << ", ";
+        ss << "v" << i-1 << ")" << endl;
+    }
+    
+    cout << ss.str() << endl;
+}
+
+int main(int argc, char** argv) 
+{
+    int max_args = 64;
+    build_code(max_args);
+       
+    return 0;
+}
+
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/README.md b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/README.md
new file mode 100644
index 00000000..123fd447
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/README.md
@@ -0,0 +1,91 @@
+serve_header.py
+===============
+
+Serves the `single_include/nlohmann/json.hpp` header file over HTTP(S).
+
+The header file is automatically amalgamated on demand.
+
+![serve_header.py demo](demo.png)
+
+## Prerequisites
+
+1. Make sure these Python packages are installed.
+    ```
+    PyYAML
+    watchdog
+    ```
+    (see `tools/serve_header/requirements.txt`)
+
+2. To serve the header over HTTPS (which is required by Compiler Explorer at this time), a certificate is needed.
+   The recommended method for creating a locally-trusted certificate is to use [`mkcert`](https://github.com/FiloSottile/mkcert).
+   - Install the `mkcert` certificate authority into your trust store(s):
+     ```
+     $ mkcert -install
+     ```
+   - Create a certificate for `localhost`:
+     ```
+     $ mkcert localhost
+     ```
+     The command will create two files, `localhost.pem` and `localhost-key.pem`, in the current working directory. It is recommended to create them in the top level or project root directory.
+
+## Usage
+
+`serve_header.py` has a built-in default configuration that will serve the `single_include/nlohmann/json.hpp` header file relative to the top level or project root directory it is homed in.
+The built-in configuration expects the certificate `localhost.pem` and the private key `localhost-key.pem`to be located in the top level or project root directory.
+
+To start serving the `json.hpp` header file at `https://localhost:8443/json.hpp`, run this command from the top level or project root directory:
+```
+$ make serve_header
+```
+
+Open [Compiler Explorer](https://godbolt.org/) and try it out:
+```cpp
+#include <https://localhost:8443/json.hpp>
+using namespace nlohmann;
+
+#include <iostream>
+
+int main() {
+    // these macros are dynamically injected into the header file
+    std::cout << JSON_BUILD_TIME << " (" << JSON_BUILD_COUNT << ")\n";
+
+    return 0;
+}
+```
+
+> `serve_header.py` dynamically injects the macros `JSON_BUILD_COUNT` and `JSON_BUILD_TIME` into the served header file. By comparing build count or time output from the compiled program with the output from `serve_header.py`, one can be reasonably sure the compiled code uses the expected revision of the header file.
+
+## Configuration
+
+`serve_header.py` will try to read a configuration file `serve_header.yml` in the top level or project root directory, and will fall back on built-in defaults if the file cannot be read.
+An annotated example configuration can be found in `tools/serve_header/serve_header.yml.example`.
+
+## Serving `json.hpp` from multiple project directory instances or working trees
+
+`serve_header.py` was designed with the goal of supporting multiple project roots or working trees at the same time.
+The recommended directory structure is shown below but `serve_header.py` can work with other structures as well, including a nested hierarchy.
+```
+json/          ⮜ the parent or web server root directory
+├── develop/   ⮜ the main git checkout
+│   └── ...
+├── feature1/
+│   └── ...      any number of additional
+├── feature2/  ⮜ working trees (e.g., created
+│   └── ...      with git worktree)
+└── feature3/
+    └── ...
+```
+
+To serve the header of each working tree at `https://localhost:8443/<worktree>/json.hpp`, a configuration file is needed.
+1. Create the file `serve_header.yml` in the top level or project root directory of any working tree:
+    ```yaml
+    root: ..
+    ```
+   By shifting the web server root directory up one level, the `single_include/nlohmann/json.hpp` header files relative to each sibling directory or working tree will be served.
+
+2. Start `serve_header.py` by running this command from the same top level or project root directory the configuration file is located in:
+    ```
+    $ make serve_header
+    ```
+
+`serve_header.py` will automatically detect the addition or removal of working trees anywhere within the configured web server root directory.
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/demo.png b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/demo.png
new file mode 100644
index 00000000..b7775160
Binary files /dev/null and b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/demo.png differ
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/requirements.txt b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/requirements.txt
new file mode 100644
index 00000000..c399c52b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/requirements.txt
@@ -0,0 +1,2 @@
+PyYAML==6.0.2
+watchdog==6.0.0
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/serve_header.py b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/serve_header.py
new file mode 100644
index 00000000..9844e680
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/serve_header.py
@@ -0,0 +1,410 @@
+#!/usr/bin/env python3
+
+import contextlib
+import logging
+import os
+import re
+import shutil
+import sys
+import subprocess
+
+from datetime import datetime, timedelta
+from io import BytesIO
+from threading import Lock, Timer
+
+from watchdog.events import FileSystemEventHandler
+from watchdog.observers import Observer
+
+from http import HTTPStatus
+from http.server import ThreadingHTTPServer, SimpleHTTPRequestHandler
+
+CONFIG_FILE = 'serve_header.yml'
+MAKEFILE = 'Makefile'
+INCLUDE = 'include/nlohmann/'
+SINGLE_INCLUDE = 'single_include/nlohmann/'
+HEADER = 'json.hpp'
+
+DATETIME_FORMAT = '%Y-%m-%d %H:%M:%S'
+
+JSON_VERSION_RE = re.compile(r'\s*#\s*define\s+NLOHMANN_JSON_VERSION_MAJOR\s+')
+
+class ExitHandler(logging.StreamHandler):
+    def __init__(self, level):
+        """."""
+        super().__init__()
+        self.level = level
+
+    def emit(self, record):
+        if record.levelno >= self.level:
+            sys.exit(1)
+
+def is_project_root(test_dir='.'):
+    makefile = os.path.join(test_dir, MAKEFILE)
+    include = os.path.join(test_dir, INCLUDE)
+    single_include = os.path.join(test_dir, SINGLE_INCLUDE)
+
+    return (os.path.exists(makefile)
+            and os.path.isfile(makefile)
+            and os.path.exists(include)
+            and os.path.exists(single_include))
+
+class DirectoryEventBucket:
+    def __init__(self, callback, delay=1.2, threshold=0.8):
+        """."""
+        self.delay = delay
+        self.threshold = timedelta(seconds=threshold)
+        self.callback = callback
+        self.event_dirs = set([])
+        self.timer = None
+        self.lock = Lock()
+
+    def start_timer(self):
+        if self.timer is None:
+            self.timer = Timer(self.delay, self.process_dirs)
+            self.timer.start()
+
+    def process_dirs(self):
+        result_dirs = []
+        event_dirs = set([])
+        with self.lock:
+            self.timer = None
+            while self.event_dirs:
+                time, event_dir = self.event_dirs.pop()
+                delta = datetime.now() - time
+                if delta < self.threshold:
+                    event_dirs.add((time, event_dir))
+                else:
+                    result_dirs.append(event_dir)
+            self.event_dirs = event_dirs
+            if result_dirs:
+                self.callback(os.path.commonpath(result_dirs))
+            if self.event_dirs:
+                self.start_timer()
+
+    def add_dir(self, path):
+        with self.lock:
+            # add path to the set of event_dirs if it is not a sibling of
+            # a directory already in the set
+            if not any(os.path.commonpath([path, event_dir]) == event_dir
+               for (_, event_dir) in self.event_dirs):
+                self.event_dirs.add((datetime.now(), path))
+                if self.timer is None:
+                    self.start_timer()
+
+class WorkTree:
+    make_command = 'make'
+
+    def __init__(self, root_dir, tree_dir):
+        """."""
+        self.root_dir = root_dir
+        self.tree_dir = tree_dir
+        self.rel_dir = os.path.relpath(tree_dir, root_dir)
+        self.name = os.path.basename(tree_dir)
+        self.include_dir = os.path.abspath(os.path.join(tree_dir, INCLUDE))
+        self.header = os.path.abspath(os.path.join(tree_dir, SINGLE_INCLUDE, HEADER))
+        self.rel_header = os.path.relpath(self.header, root_dir)
+        self.dirty = True
+        self.build_count = 0
+        t = os.path.getmtime(self.header)
+        t = datetime.fromtimestamp(t)
+        self.build_time = t.strftime(DATETIME_FORMAT)
+
+    def __hash__(self):
+        """."""
+        return hash((self.tree_dir))
+
+    def __eq__(self, other):
+        """."""
+        if not isinstance(other, type(self)):
+            return NotImplemented
+        return self.tree_dir == other.tree_dir
+
+    def update_dirty(self, path):
+        if self.dirty:
+            return
+
+        path = os.path.abspath(path)
+        if os.path.commonpath([path, self.include_dir]) == self.include_dir:
+            logging.info(f'{self.name}: working tree marked dirty')
+            self.dirty = True
+
+    def amalgamate_header(self):
+        if not self.dirty:
+            return
+
+        mtime = os.path.getmtime(self.header)
+        subprocess.run([WorkTree.make_command, 'amalgamate'], cwd=self.tree_dir,
+                       stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+        if mtime == os.path.getmtime(self.header):
+            logging.info(f'{self.name}: no changes')
+        else:
+            self.build_count += 1
+            self.build_time = datetime.now().strftime(DATETIME_FORMAT)
+            logging.info(f'{self.name}: header amalgamated (build count {self.build_count})')
+
+        self.dirty = False
+
+class WorkTrees(FileSystemEventHandler):
+    def __init__(self, root_dir):
+        """."""
+        super().__init__()
+        self.root_dir = root_dir
+        self.trees = set([])
+        self.tree_lock = Lock()
+        self.scan(root_dir)
+        self.created_bucket = DirectoryEventBucket(self.scan)
+        self.observer = Observer()
+        self.observer.schedule(self, root_dir, recursive=True)
+        self.observer.start()
+
+    def scan(self, base_dir):
+        scan_dirs = set([base_dir])
+        # recursively scan base_dir for working trees
+
+        while scan_dirs:
+            scan_dir = os.path.abspath(scan_dirs.pop())
+            self.scan_tree(scan_dir)
+            try:
+                with os.scandir(scan_dir) as dir_it:
+                    for entry in dir_it:
+                        if entry.is_dir():
+                            scan_dirs.add(entry.path)
+            except FileNotFoundError as e:
+                logging.debug('path disappeared: %s', e)
+
+    def scan_tree(self, scan_dir):
+        if not is_project_root(scan_dir):
+            return
+
+        # skip source trees in build directories
+        # this check could be enhanced
+        if scan_dir.endswith('/_deps/json-src'):
+            return
+
+        tree = WorkTree(self.root_dir, scan_dir)
+        with self.tree_lock:
+            if not tree in self.trees:
+                if tree.name == tree.rel_dir:
+                    logging.info(f'adding working tree {tree.name}')
+                else:
+                    logging.info(f'adding working tree {tree.name} at {tree.rel_dir}')
+                url = os.path.join('/', tree.rel_dir, HEADER)
+                logging.info(f'{tree.name}: serving header at {url}')
+                self.trees.add(tree)
+
+    def rescan(self, path=None):
+        if path is not None:
+            path = os.path.abspath(path)
+        trees = set([])
+        # check if any working trees have been removed
+        with self.tree_lock:
+            while self.trees:
+                tree = self.trees.pop()
+                if ((path is None
+                    or os.path.commonpath([path, tree.tree_dir]) == tree.tree_dir)
+                    and not is_project_root(tree.tree_dir)):
+                    if tree.name == tree.rel_dir:
+                        logging.info(f'removing working tree {tree.name}')
+                    else:
+                        logging.info(f'removing working tree {tree.name} at {tree.rel_dir}')
+                else:
+                    trees.add(tree)
+            self.trees = trees
+
+    def find(self, path):
+        # find working tree for a given header file path
+        path = os.path.abspath(path)
+        with self.tree_lock:
+            for tree in self.trees:
+                if path == tree.header:
+                    return tree
+        return None
+
+    def on_any_event(self, event):
+        logging.debug('%s (is_dir=%s): %s', event.event_type,
+                      event.is_directory, event.src_path)
+        path = os.path.abspath(event.src_path)
+        if event.is_directory:
+            if event.event_type == 'created':
+                # check for new working trees
+                self.created_bucket.add_dir(path)
+            elif event.event_type == 'deleted':
+                # check for deleted working trees
+                self.rescan(path)
+        elif event.event_type == 'closed':
+            with self.tree_lock:
+                for tree in self.trees:
+                    tree.update_dirty(path)
+
+    def stop(self):
+        self.observer.stop()
+        self.observer.join()
+
+class HeaderRequestHandler(SimpleHTTPRequestHandler): # lgtm[py/missing-call-to-init]
+    def __init__(self, request, client_address, server):
+        """."""
+        self.worktrees = server.worktrees
+        self.worktree = None
+        try:
+            super().__init__(request, client_address, server,
+                             directory=server.worktrees.root_dir)
+        except ConnectionResetError:
+            logging.debug('connection reset by peer')
+
+    def translate_path(self, path):
+        path = os.path.abspath(super().translate_path(path))
+
+        # add single_include/nlohmann into path, if needed
+        header = os.path.join('/', HEADER)
+        header_path = os.path.join('/', SINGLE_INCLUDE, HEADER)
+        if (path.endswith(header)
+            and not path.endswith(header_path)):
+            path = os.path.join(os.path.dirname(path), SINGLE_INCLUDE, HEADER)
+
+        return path
+
+    def send_head(self):
+        # check if the translated path matches a working tree
+        # and fullfill the request; otherwise, send 404
+        path = self.translate_path(self.path)
+        self.worktree = self.worktrees.find(path)
+        if self.worktree is not None:
+            self.worktree.amalgamate_header()
+            logging.info(f'{self.worktree.name}; serving header (build count {self.worktree.build_count})')
+            return super().send_head()
+        logging.info(f'invalid request path: {self.path}')
+        super().send_error(HTTPStatus.NOT_FOUND, 'Not Found')
+        return None
+
+    def send_header(self, keyword, value):
+        # intercept Content-Length header; sent in copyfile later
+        if keyword == 'Content-Length':
+            return
+        super().send_header(keyword, value)
+
+    def end_headers (self):
+        # intercept; called in copyfile() or indirectly
+        # by send_head via super().send_error()
+        pass
+
+    def copyfile(self, source, outputfile):
+        injected = False
+        content = BytesIO()
+        length = 0
+        # inject build count and time into served header
+        for line in source:
+            line = line.decode('utf-8')
+            if not injected and JSON_VERSION_RE.match(line):
+                length += content.write(bytes('#define JSON_BUILD_COUNT '\
+                                              f'{self.worktree.build_count}\n', 'utf-8'))
+                length += content.write(bytes('#define JSON_BUILD_TIME '\
+                                              f'"{self.worktree.build_time}"\n\n', 'utf-8'))
+                injected = True
+            length += content.write(bytes(line, 'utf-8'))
+
+        # set content length
+        super().send_header('Content-Length', length)
+        # CORS header
+        self.send_header('Access-Control-Allow-Origin', '*')
+        # prevent caching
+        self.send_header('Cache-Control', 'no-cache, no-store, must-revalidate')
+        self.send_header('Pragma', 'no-cache')
+        self.send_header('Expires', '0')
+        super().end_headers()
+
+        # send the header
+        content.seek(0)
+        shutil.copyfileobj(content, outputfile)
+
+    def log_message(self, format, *args):
+        pass
+
+class DualStackServer(ThreadingHTTPServer):
+    def __init__(self, addr, worktrees):
+        """."""
+        self.worktrees = worktrees
+        super().__init__(addr, HeaderRequestHandler)
+
+    def server_bind(self):
+        # suppress exception when protocol is IPv4
+        with contextlib.suppress(Exception):
+            self.socket.setsockopt(
+                socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
+        return super().server_bind()
+
+if __name__ == '__main__':
+    import argparse
+    import ssl
+    import socket
+    import yaml
+
+    # exit code
+    ec = 0
+
+    # setup logging
+    logging.basicConfig(format='[%(asctime)s] %(levelname)s: %(message)s',
+                        datefmt=DATETIME_FORMAT, level=logging.INFO)
+    log = logging.getLogger()
+    log.addHandler(ExitHandler(logging.ERROR))
+
+    # parse command line arguments
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--make', default='make',
+                        help='the make command (default: make)')
+    args = parser.parse_args()
+
+    # propagate the make command to use for amalgamating headers
+    WorkTree.make_command = args.make
+
+    worktrees = None
+    try:
+        # change working directory to project root
+        os.chdir(os.path.realpath(os.path.join(sys.path[0], '../../')))
+
+        if not is_project_root():
+            log.error('working directory does not look like project root')
+
+        # load config
+        config = {}
+        config_file = os.path.abspath(CONFIG_FILE)
+        try:
+            with open(config_file, 'r') as f:
+                config = yaml.safe_load(f)
+        except FileNotFoundError:
+            log.info(f'cannot find configuration file: {config_file}')
+            log.info('using default configuration')
+
+        # find and monitor working trees
+        worktrees = WorkTrees(config.get('root', '.'))
+
+        # start web server
+        infos = socket.getaddrinfo(config.get('bind', None), config.get('port', 8443),
+                                   type=socket.SOCK_STREAM, flags=socket.AI_PASSIVE)
+        DualStackServer.address_family = infos[0][0]
+        HeaderRequestHandler.protocol_version = 'HTTP/1.0'
+        with DualStackServer(infos[0][4], worktrees) as httpd:
+            scheme = 'HTTP'
+            https = config.get('https', {})
+            if https.get('enabled', True):
+                cert_file = https.get('cert_file', 'localhost.pem')
+                key_file = https.get('key_file', 'localhost-key.pem')
+                ssl_ctx = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
+                ssl_ctx.minimum_version = ssl.TLSVersion.TLSv1_2
+                ssl_ctx.maximum_version = ssl.TLSVersion.MAXIMUM_SUPPORTED
+                ssl_ctx.load_cert_chain(cert_file, key_file)
+                httpd.socket = ssl_ctx.wrap_socket(httpd.socket, server_side=True)
+                scheme = 'HTTPS'
+            host, port = httpd.socket.getsockname()[:2]
+            log.info(f'serving {scheme} on {host} port {port}')
+            log.info('press Ctrl+C to exit')
+            httpd.serve_forever()
+
+    except KeyboardInterrupt:
+        log.info('exiting')
+    except Exception:
+        ec = 1
+        log.exception('an error occurred:')
+    finally:
+        if worktrees is not None:
+            worktrees.stop()
+            sys.exit(ec)
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/serve_header.yml.example b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/serve_header.yml.example
new file mode 100644
index 00000000..42310910
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/tools/serve_header/serve_header.yml.example
@@ -0,0 +1,15 @@
+# all paths are relative to the project root
+
+# the root directory for the web server
+# root: .
+
+# configure SSL
+# https:
+#   enabled: true
+# these filenames are listed in .gitignore
+#  cert_file: localhost.pem
+#  key_file: localhost-key.pem
+
+# address and port for the server to listen on
+# bind: null
+# port: 8443
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/json/wsjcpp.yml b/ohos/vap/vap_module/src/main/cpp/include/util/json/wsjcpp.yml
new file mode 100644
index 00000000..e6443cf8
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/json/wsjcpp.yml
@@ -0,0 +1,26 @@
+wsjcpp_version: "v0.1.1"
+cmake_minimum_required: "3.0"
+cmake_cxx_standard: "11"
+name: "nlohmann/json"
+version: "v3.11.3"
+description: "JSON for Modern C++"
+issues: "https://github.com/nlohmann/json/issues"
+keywords:
+  - "c++"
+  - "json"
+
+repositories:
+  - type: main
+    url: "https://github.com/nlohmann/json"
+
+authors:
+  - name: "Niels Lohmann"
+    email: "mail@nlohmann.me"
+
+distribution:
+  - source-file: "single_include/nlohmann/json.hpp"
+    target-file: "json.hpp"
+    type: "source-code"
+  - source-file: "single_include/nlohmann/json_fwd.hpp"
+    target-file: "json_fwd.hpp"
+    type: "source-code"
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/log.h b/ohos/vap/vap_module/src/main/cpp/include/util/log.h
new file mode 100644
index 00000000..8dc6b96e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/log.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LOG_H
+#define LOG_H
+
+#include <hilog/log.h>
+
+#undef LOG_TAG
+#define LOG_TAG "[VAP]"
+
+#ifndef LOGI
+#define LOGI(...) ((void)OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, LOG_TAG, __VA_ARGS__))
+#endif
+
+#ifndef LOGD
+#define LOGD(...) ((void)OH_LOG_Print(LOG_APP, LOG_DEBUG, LOG_DOMAIN, LOG_TAG, __VA_ARGS__))
+#endif
+
+#ifndef LOGW
+#define LOGW(...) ((void)OH_LOG_Print(LOG_APP, LOG_WARN, LOG_DOMAIN, LOG_TAG, __VA_ARGS__))
+#endif
+
+#ifndef LOGE
+#define LOGE(...) ((void)OH_LOG_Print(LOG_APP, LOG_ERROR, LOG_DOMAIN, LOG_TAG, __VA_ARGS__))
+#endif
+#endif // _LOG_H_
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/shader_util.h b/ohos/vap/vap_module/src/main/cpp/include/util/shader_util.h
new file mode 100644
index 00000000..158fd915
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/shader_util.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_SHADER_UTIL_H
+#define VAP_SHADER_UTIL_H
+
+#include <GLES3/gl3.h>
+#include <EGL/egl.h>
+
+static char g_vertexShader[] =
+    "attribute vec4 v_Position;\n"
+    "attribute vec2 vTexCoordinateAlpha;\n"
+    "attribute vec2 vTexCoordinateRgb;\n"
+    "varying vec2 v_TexCoordinateAlpha;\n"
+    "varying vec2 v_TexCoordinateRgb;\n"
+    "\n"
+    "void main() {\n"
+    "    v_TexCoordinateAlpha = vTexCoordinateAlpha;\n"
+    "    v_TexCoordinateRgb = vTexCoordinateRgb;\n"
+    "    gl_Position = v_Position;\n"
+    "}\n\0";
+
+static char g_fragmentShader[] =
+    "precision mediump float;\n"
+    "uniform sampler2D sampler_y;\n"
+    "uniform sampler2D sampler_u;\n"
+    "uniform sampler2D sampler_v;\n"
+    "varying vec2 v_TexCoordinateAlpha;\n"
+    "varying vec2 v_TexCoordinateRgb;\n"
+    "uniform mat3 convertMatrix;\n"
+    "uniform vec3 offset;\n"
+    "\n"
+    "void main() {\n"
+    "   highp vec3 yuvColorAlpha;\n"
+    "   highp vec3 yuvColorRGB;\n"
+    "   highp vec3 rgbColorAlpha;\n"
+    "   highp vec3 rgbColorRGB;\n"
+    "   yuvColorAlpha.x = (texture2D(sampler_y,v_TexCoordinateAlpha).r - 0.062745) * 1.16438;\n"
+    "   yuvColorRGB.x = (texture2D(sampler_y,v_TexCoordinateRgb).r - 0.062745) * 1.16438;\n"
+    "   yuvColorAlpha.y = texture2D(sampler_u,v_TexCoordinateAlpha).r;\n"
+    "   yuvColorAlpha.z = texture2D(sampler_v,v_TexCoordinateAlpha).r;\n"
+    "   yuvColorRGB.y = texture2D(sampler_u,v_TexCoordinateRgb).r;\n"
+    "   yuvColorRGB.z = texture2D(sampler_v,v_TexCoordinateRgb).r;\n"
+    "   yuvColorAlpha += offset;\n"
+    "   yuvColorRGB += offset;\n"
+    "   rgbColorAlpha = convertMatrix * yuvColorAlpha; \n"
+    "   rgbColorRGB = convertMatrix * yuvColorRGB; \n"
+    "   gl_FragColor=vec4(rgbColorRGB, rgbColorAlpha.r);\n"
+    "}\n\0";
+
+class ShaderUtil {
+public:
+    static GLuint CreateProgram(const char *vertexSource, const char *fragmentSource);
+
+private:
+    static GLuint CompileShader(GLenum shaderType, const char *shaderSource);
+    static GLuint CreateAndLinkProgram(GLuint vertexShaderHandle, GLuint fragmentShaderHandle);
+};
+
+#endif // VAP_SHADER_UTIL_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/tex_coords_util.h b/ohos/vap/vap_module/src/main/cpp/include/util/tex_coords_util.h
new file mode 100644
index 00000000..79957530
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/tex_coords_util.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_TEX_COORDS_UTIL_H
+#define VAP_TEX_COORDS_UTIL_H
+
+#include <stdint.h>
+#include <sys/stat.h>
+#include "vertex_util.h"
+
+class TexCoordsUtil {
+public:
+    static void Create(int32_t width, int32_t height, PointRect rect, float *array);
+    static void Rotate90(float *array);
+};
+
+#endif // VAP_TEX_COORDS_UTIL_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/texture_load_util.h b/ohos/vap/vap_module/src/main/cpp/include/util/texture_load_util.h
new file mode 100644
index 00000000..42d22802
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/texture_load_util.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_TEXTURE_LOADUTIL_H
+#define VAP_TEXTURE_LOADUTIL_H
+
+#include <GLES3/gl32.h>
+#include <stdint.h>
+#include <vector>
+
+class BitMap {
+public:
+    std::vector<uint8_t> pixelsData;
+    int32_t imgWidth;
+    int32_t imgHeight;
+};
+
+class TextureLoadUtil {
+public:
+    static TextureLoadUtil &GetInstance()
+    {
+        static TextureLoadUtil instance;
+        return instance;
+    }
+    void loadTexture(BitMap bitmap, GLuint *textures);
+};
+#endif // VAP_TEXTURE_LOADUTIL_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/util/vertex_util.h b/ohos/vap/vap_module/src/main/cpp/include/util/vertex_util.h
new file mode 100644
index 00000000..6aa6b836
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/util/vertex_util.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_VERTEX_UTIL_H
+#define VAP_VERTEX_UTIL_H
+
+#include <GLES3/gl3.h>
+#include <EGL/egl.h>
+#include <memory>
+#include <stdint.h>
+
+#define TRIANGLES_POINT 3
+#define TETRAHEDRON_POINT 12
+#define FLOATARRAY_SIZE 8
+
+class PointRect {
+public:
+    int32_t x;
+    int32_t y;
+    int32_t w;
+    int32_t h;
+
+    PointRect() {}
+    PointRect(int x, int y, int w, int h) : x(x), y(y), w(w), h(h) {}
+};
+
+class RefVec2 {
+public:
+    int32_t w;
+    int32_t h;
+    
+    RefVec2() {}
+    RefVec2(int32_t w, int32_t h) : w(w), h(h) {}
+};
+
+class VertexUtil {
+public:
+    void Create(int32_t width, int32_t height, const PointRect &rect, float *array);
+    void EnableVertexAttrib(GLuint index);
+    void SetArray(float *array);
+    std::unique_ptr<float[]> array = std::make_unique<float[]>(FLOATARRAY_SIZE);
+
+private:
+    float SwitchX(float x);
+    float SwitchY(float y);
+    
+private:
+    float *floatBuffer;
+};
+
+#endif // VAP_VERTEX_UTIL_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/vap_callback.h b/ohos/vap/vap_module/src/main/cpp/include/vap_callback.h
new file mode 100644
index 00000000..3e50be65
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/vap_callback.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_CALLBACK_H
+#define VAP_CALLBACK_H
+
+#include <ohaudio/native_audiorenderer.h>
+#include <ohaudio/native_audiostreambuilder.h>
+#include "data_info.h"
+
+class VAPCallback {
+public:
+    static int32_t OnRenderWriteData(OH_AudioRenderer *renderer, void *userData, void *buffer, int32_t length);
+    static int32_t OnRenderStreamEvent(OH_AudioRenderer *renderer, void *userData, OH_AudioStream_Event event);
+    static int32_t OnRenderInterruptEvent(OH_AudioRenderer *renderer, void *userData, OH_AudioInterrupt_ForceType type,
+        OH_AudioInterrupt_Hint hint);
+    static int32_t OnRenderError(OH_AudioRenderer *renderer, void *userData, OH_AudioStream_Result error);
+
+    static void OnCodecError(OH_AVCodec *codec, int32_t errorCode, void *userData);
+    static void OnCodecFormatChange(OH_AVCodec *codec, OH_AVFormat *format, void *userData);
+    static void OnNeedInputBuffer(OH_AVCodec *codec, uint32_t index, OH_AVBuffer *buffer, void *userData);
+    static void OnNewOutputBuffer(OH_AVCodec *codec, uint32_t index, OH_AVBuffer *buffer, void *userData);
+};
+
+#endif // VAP_CALLBACK_H
diff --git a/ohos/vap/vap_module/src/main/cpp/include/video_decoder.h b/ohos/vap/vap_module/src/main/cpp/include/video_decoder.h
new file mode 100644
index 00000000..8f513ed0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/include/video_decoder.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_DECODER_H
+#define VAP_DECODER_H
+
+#include "data_info.h"
+
+class VideoDecoder {
+public:
+    VideoDecoder() = default;
+    ~VideoDecoder();
+
+    int32_t CreateVideoDecoder(const std::string &codecMime);
+    int32_t ConfigureVideoDecoder(const VAPInfo &info);
+    int32_t Config(const VAPInfo &info, VDecSignal *signal);
+    int32_t StartVideoDecoder();
+    int32_t PushInputData(CodecBufferInfo &info);
+    int32_t FreeOutputData(uint32_t bufferIndex, bool render);
+    int32_t Release();
+
+private:
+    int32_t SetCallback(VDecSignal *signal);
+
+    bool isAVBufferMode_ = false;
+    OH_AVCodec *decoder_ = nullptr;
+};
+#endif // VAP_DECODER_H
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/manager/plugin_manager.cpp b/ohos/vap/vap_module/src/main/cpp/manager/plugin_manager.cpp
new file mode 100644
index 00000000..7f1b6d15
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/manager/plugin_manager.cpp
@@ -0,0 +1,229 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <cstdint>
+#include <string>
+#include <cstdio>
+
+#include <ace/xcomponent/native_interface_xcomponent.h>
+#include <hilog/log.h>
+
+#include "plugin_manager.h"
+
+PluginManager PluginManager::m_pluginManager;
+
+static const size_t GET_CONTEXT_PARAM_CNT = 1;
+
+enum ContextType {
+    APP_LIFECYCLE,
+    PAGE_LIFECYCLE,
+};
+
+PluginManager::~PluginManager()
+{
+    LOGD("~PluginManager");
+    m_pluginRenderMap.clear();
+}
+
+napi_value PluginManager::GetContext(napi_env env, napi_callback_info info)
+{
+    if ((nullptr == env) || (nullptr == info)) {
+        LOGE("GetContext env or info is null");
+        return nullptr;
+    }
+
+    size_t argCnt = GET_CONTEXT_PARAM_CNT;
+    napi_value args[GET_CONTEXT_PARAM_CNT] = { nullptr };
+    if (napi_ok != napi_get_cb_info(env, info, &argCnt, args, nullptr, nullptr)) {
+        LOGE("GetContext napi_get_cb_info failed");
+    }
+
+    if (GET_CONTEXT_PARAM_CNT != argCnt) {
+        napi_throw_type_error(env, NULL, "Wrong number of arguments");
+        return nullptr;
+    }
+
+    napi_valuetype valuetype;
+    if (napi_ok != napi_typeof(env, args[0], &valuetype)) {
+        napi_throw_type_error(env, NULL, "napi_typeof failed");
+        return nullptr;
+    }
+
+    if (napi_number != valuetype) {
+        napi_throw_type_error(env, NULL, "Wrong type of arguments");
+        return nullptr;
+    }
+
+    int64_t value;
+    if (napi_ok != napi_get_value_int64(env, args[0], &value)) {
+        napi_throw_type_error(env, NULL, "napi_get_value_int64 failed");
+        return nullptr;
+    }
+
+    napi_value exports;
+    if (napi_ok != napi_create_object(env, &exports)) {
+        napi_throw_type_error(env, NULL, "napi_create_object failed");
+        return nullptr;
+    }
+
+    RegisterLifecycle(env, exports, value);
+
+    return exports;
+}
+
+void PluginManager::RegisterLifecycle(napi_env env, napi_value exports, int64_t value)
+{
+    if ((nullptr == env) || (nullptr == exports)) {
+        LOGE("RegisterLifecycle: env or exports is null");
+        return;
+    }
+
+    switch (value) {
+        case APP_LIFECYCLE: {
+            LOGD("RegisterLifecycle: APP_LIFECYCLE");
+            /* ****  Register App Lifecycle  **** */
+            napi_property_descriptor desc[] = {
+                {"onCreate", nullptr, PluginManager::NapiOnCreate, nullptr, nullptr, nullptr, napi_default, nullptr},
+                {"onShow", nullptr, PluginManager::NapiOnShow, nullptr, nullptr, nullptr, napi_default, nullptr},
+                {"onHide", nullptr, PluginManager::NapiOnHide, nullptr, nullptr, nullptr, napi_default, nullptr},
+                {"onDestroy", nullptr, PluginManager::NapiOnDestroy, nullptr, nullptr, nullptr, napi_default, nullptr}
+            };
+            napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
+            break;
+        }
+        case PAGE_LIFECYCLE: {
+            LOGD("RegisterLifecycle: PAGE_LIFECYCLE");
+            /* ****  Register Page Lifecycle  **** */
+            napi_property_descriptor desc[] = {
+                {"aboutToAppear", nullptr, PluginManager::NapiToAppear,
+                    nullptr, nullptr, nullptr, napi_default, nullptr},
+                {"aboutToDisappear", nullptr, PluginManager::NapiToDisappear,
+                    nullptr, nullptr, nullptr, napi_default, nullptr},
+                {"onPageShow", nullptr, PluginManager::NapiOnPageShow,
+                    nullptr, nullptr, nullptr, napi_default, nullptr},
+                {"onPageHide", nullptr, PluginManager::NapiOnPageHide,
+                    nullptr, nullptr, nullptr, napi_default, nullptr}
+            };
+            napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
+            break;
+        }
+        default: {
+            LOGE("RegisterLifecycle: wrong type of value");
+            break;
+        }
+    }
+}
+
+void PluginManager::Export(napi_env env, napi_value exports)
+{
+    if ((nullptr == env) || (nullptr == exports)) {
+        LOGE("Export: env or exports is null");
+        return;
+    }
+
+    napi_value exportInstance = nullptr;
+    if (napi_ok != napi_get_named_property(env, exports, OH_NATIVE_XCOMPONENT_OBJ, &exportInstance)) {
+        LOGE("Export: napi_get_named_property fail");
+        return;
+    }
+
+    OH_NativeXComponent *nativeXComponent = nullptr;
+    if (napi_ok != napi_unwrap(env, exportInstance, reinterpret_cast<void **>(&nativeXComponent))) {
+        LOGE("Export: napi_unwrap fail");
+        return;
+    }
+
+    char idStr[OH_XCOMPONENT_ID_LEN_MAX + 1] = { '\0' };
+    uint64_t idSize = OH_XCOMPONENT_ID_LEN_MAX + 1;
+    if (OH_NATIVEXCOMPONENT_RESULT_SUCCESS != OH_NativeXComponent_GetXComponentId(nativeXComponent, idStr, &idSize)) {
+        LOGE("Export: OH_NativeXComponent_GetXComponentId fail");
+        return;
+    }
+
+    std::string id(idStr);
+    auto context = PluginManager::GetInstance();
+    if ((nullptr != context) && (nullptr != nativeXComponent)) {
+        auto render = context->GetRender(id);
+        OH_NativeXComponent_RegisterCallback(nativeXComponent, &PluginRender::m_callback);
+        if (nullptr != render) {
+            render->Export(env, exports);
+        }
+    }
+}
+
+void PluginManager::DeletePluginRender(const std::string& id)
+{
+    m_pluginRenderMap.erase(id);
+}
+
+std::shared_ptr<PluginRender> PluginManager::GetRender(std::string &id)
+{
+    if (m_pluginRenderMap.find(id) == m_pluginRenderMap.end()) {
+        std::shared_ptr<PluginRender> instance = PluginRender::GetInstance(id, false);
+        instance->deleteRenderCallback_ = std::bind(&PluginManager::DeletePluginRender, this, std::placeholders::_1);
+        m_pluginRenderMap[id] = instance;
+        return instance;
+    }
+
+    return m_pluginRenderMap[id];
+}
+
+napi_value PluginManager::NapiOnCreate(napi_env env, napi_callback_info info)
+{
+    OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, "PluginManager", "NapiOnCreate");
+    return nullptr;
+}
+
+napi_value PluginManager::NapiOnShow(napi_env env, napi_callback_info info)
+{
+    OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, "PluginManager", "NapiOnShow");
+    return nullptr;
+}
+
+napi_value PluginManager::NapiOnHide(napi_env env, napi_callback_info info)
+{
+    OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, "PluginManager", "NapiOnHide");
+    return nullptr;
+}
+
+napi_value PluginManager::NapiOnDestroy(napi_env env, napi_callback_info info)
+{
+    OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, "PluginManager", "NapiOnDestroy");
+    return nullptr;
+}
+
+napi_value PluginManager::NapiToAppear(napi_env env, napi_callback_info info)
+{
+    OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, "PluginManager", "NapiToAppear");
+    return nullptr;
+}
+
+napi_value PluginManager::NapiToDisappear(napi_env env, napi_callback_info info)
+{
+    OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, "PluginManager", "NapiToDisappear");
+    return nullptr;
+}
+
+napi_value PluginManager::NapiOnPageShow(napi_env env, napi_callback_info info)
+{
+    OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, "PluginManager", "NapiOnPageShow");
+    return nullptr;
+}
+
+napi_value PluginManager::NapiOnPageHide(napi_env env, napi_callback_info info)
+{
+    OH_LOG_Print(LOG_APP, LOG_INFO, LOG_DOMAIN, "PluginManager", "NapiOnPageHide");
+    return nullptr;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/mask/mask_config.cpp b/ohos/vap/vap_module/src/main/cpp/mask/mask_config.cpp
new file mode 100644
index 00000000..f29b0670
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/mask/mask_config.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mask_config.h"
+
+MaskConfig::MaskConfig(int32_t width, int32_t height)
+{
+    width_ = width;
+    maskTexId_ = height;
+}
+
+MaskConfig::~MaskConfig()
+{
+    if (maskTexId_) {
+        glDeleteTextures(1, &maskTexId_);
+    }
+}
+
+int32_t MaskConfig::GetMaskTexId()
+{
+    return maskTexId_;
+}
+
+int32_t MaskConfig::UpdateMaskTex(BitMap alphaMaskBitmap)
+{
+    TextureLoadUtil::GetInstance().loadTexture(alphaMaskBitmap, &maskTexId_);
+    return maskTexId_;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/mask/mask_render.cpp b/ohos/vap/vap_module/src/main/cpp/mask/mask_render.cpp
new file mode 100644
index 00000000..c418b421
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/mask/mask_render.cpp
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mask_render.h"
+
+#include "log.h"
+
+#include <GLES2/gl2ext.h>
+#include "common_const.h"
+
+using namespace CommonConst;
+
+void MaskRender::RenderFrame(MaskConfig maskConfig)
+{
+    auto maskTexId = maskConfig.GetMaskTexId();
+    if (maskTexId <= 0) {
+        LOGE("maskTexId not ready, cont Rendered");
+    }
+    
+    auto texTuple = maskConfig.maskTexPair_;
+    auto maskTexRect = std::get<0>(texTuple);
+    auto maskTexRefVec2 = std::get<1>(texTuple);
+    
+    auto positionTuple = maskConfig.maskPositionPair_;
+    PointRect maskPositionRect;
+    if (std::get<0>(positionTuple).w != 0 && std::get<0>(positionTuple).h != 0) {
+        maskPositionRect = std::get<0>(positionTuple);
+    } else {
+        maskPositionRect = PointRect(0, 0, maskConfig.width_, maskConfig.height_);
+    }
+
+    RefVec2 maskPositionRefVec2;
+    if (std::get<1>(positionTuple).w != 0 && std::get<1>(positionTuple).h !=0) {
+        maskPositionRefVec2 = std::get<1>(positionTuple);
+    } else {
+        maskPositionRefVec2 = RefVec2(maskConfig.width_, maskConfig.height_);
+    }
+    
+    m_maskShader->UseProgram();
+    m_vertexArray.Create(maskPositionRefVec2.w, maskPositionRefVec2.h, maskPositionRect, m_vertexArray.array.get());
+    m_vertexArray.SetArray(m_vertexArray.array.get());
+    m_vertexArray.EnableVertexAttrib(m_maskShader->m_aPositionLocation);
+    
+    m_maskArray.Create(
+        maskTexRefVec2.w,
+        maskTexRefVec2.h,
+        maskTexRect,
+        m_maskArray.array.get()
+    );
+    m_maskArray.SetArray(m_maskArray.array.get());
+    m_maskArray.EnableVertexAttrib(m_maskShader->m_aTextureMaskCoordinatesLocation);
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, maskTexId);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glUniform1i(m_maskShader->m_uTextureMaskUnitLocation, 0);
+
+    glEnable(GL_BLEND);
+    glBlendFuncSeparate(GL_ONE, GL_SRC_ALPHA, GL_ZERO, GL_SRC_ALPHA);
+    glDrawArrays(GL_TRIANGLE_STRIP, 0, FOUR);
+    glDisable(GL_BLEND);
+}
+
+MaskRender::MaskRender(bool edgeBlur)
+{
+    m_maskShader = std::make_unique<class MaskShader>(edgeBlur);
+    glDisable(GL_DEPTH_TEST);
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/mask/mask_shader.cpp b/ohos/vap/vap_module/src/main/cpp/mask/mask_shader.cpp
new file mode 100644
index 00000000..5d2dbb3d
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/mask/mask_shader.cpp
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mask_shader.h"
+
+MaskShader::MaskShader(bool edgeBlurBoolean)
+{
+    if (edgeBlurBoolean) {
+        m_program = ShaderUtil::CreateProgram(MASK_VERTEX, FRAGMENT_BLUR_EDGE);
+    } else {
+        m_program = ShaderUtil::CreateProgram(MASK_VERTEX, FRAGMENT_NO_BLUR_EDGE);
+    }
+    m_uTextureMaskUnitLocation = glGetUniformLocation(m_program, U_TEXTURE_ALPHA_MASK_UNIT);
+    m_aPositionLocation = glGetAttribLocation(m_program, A_POSITION);
+    m_aTextureMaskCoordinatesLocation = glGetAttribLocation(m_program, A_TEXTURE_MASK_COORDINATES);
+}
+
+void MaskShader::UseProgram()
+{
+    glUseProgram(m_program);
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/mix/frame.cpp b/ohos/vap/vap_module/src/main/cpp/mix/frame.cpp
new file mode 100644
index 00000000..f6a1d42e
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/mix/frame.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "frame.h"
+
+#include <algorithm>
+#include "log.h"
+#include "common_const.h"
+
+using namespace CommonConst;
+
+Frame::Frame(json jsonFrame)
+{
+    srcId = jsonFrame.at("srcId").get<std::string>();
+    z = jsonFrame.at("z").get<int>();
+
+    const auto& frameRect = jsonFrame.at("frame");
+    frame = std::move(PointRect(frameRect.at(ZERO).get<int>(), frameRect.at(ONE).get<int>(),
+        frameRect.at(TWO).get<int>(), frameRect.at(THREE).get<int>()));
+    
+    const auto& mFrameRect = jsonFrame.at("mFrame");
+    mFrame = std::move(PointRect(mFrameRect.at(ZERO).get<int>(), mFrameRect.at(ONE).get<int>(),
+        mFrameRect.at(TWO).get<int>(), mFrameRect.at(THREE).get<int>()));
+    
+    mt = jsonFrame.at("mt").get<int>();
+    json j(frameRect);
+}
+
+FrameSet::FrameSet(json jsonObj)
+{
+    index = jsonObj.at("i").get<int>();
+    auto objJsonArray = jsonObj.at("obj");
+    size_t objLen = objJsonArray.size();
+    for (int i = 0; i < objLen; i++) {
+        auto frameJson = objJsonArray[i];
+        Frame frame = Frame(frameJson);
+        frames.push_back(frame);
+    }
+    std::sort(frames.begin(), frames.end());
+}
+
+FrameAll::FrameAll(json jsonObj)
+{
+    auto frameJsonArray = jsonObj.at("frame");
+    size_t frameLen = frameJsonArray.size();
+    LOGD("enter FrameAll frame size: %{public}lu", frameLen);
+    for (int i = 0; i < frameLen; i++) {
+        auto frameSetJson = frameJsonArray[i];
+        auto frameSet = FrameSet(frameSetJson);
+        frameAll.insert(std::make_pair(frameSet.index, frameSet));
+    }
+}
+
+void Frame::PrintInfo()
+{
+    LOGD("srcId: %{public}s z: %{public}d, frame:[%{public}d, %{public}d, %{public}d, %{public}d],"
+        "mFrame:[%{public}d, %{public}d, %{public}d, %{public}d], mt: %{public}d", srcId.c_str(), z,
+        frame.x, frame.y, frame.w, frame.h, mFrame.x, mFrame.y, mFrame.w, mFrame.h, mt);
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/mix/mix_render.cpp b/ohos/vap/vap_module/src/main/cpp/mix/mix_render.cpp
new file mode 100644
index 00000000..0d85922f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/mix/mix_render.cpp
@@ -0,0 +1,241 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mix_render.h"
+
+#include "tex_coords_util.h"
+#include "resource_request.h"
+#include "anim_config.h"
+#include "texture_load_util.h"
+
+#include <GLES2/gl2ext.h>
+#include <algorithm>
+#include <memory>
+#include "common_const.h"
+
+using namespace CommonConst;
+
+static void transColor(int32_t color, std::vector<float> &argb)
+{
+    uint8_t alpha = (color >> THREE_TIME_EIGHT) & 0xFF;
+    uint8_t red = (color >> TWO_TIME_EIGHT) & 0xFF;
+    uint8_t green = (color >> EIGHT) & 0xFF;
+    uint8_t blue = color & 0xFF;
+    argb.push_back(1.0 * alpha / 0xFF);
+    argb.push_back(1.0 * red / 0xFF);
+    argb.push_back(1.0 * green / 0xFF);
+    argb.push_back(1.0 * blue / 0xFF);
+}
+
+MixRender::MixRender(std::map<std::string, MixInputData> iptData)
+{
+    m_mixData = iptData;
+}
+
+void MixRender::GenSrcTexture(Src src, BitMap &bitmap, const MixInputData mixData)
+{
+    std::unique_ptr<ResourceRequest> reqPtr = std::make_unique<ResourceRequest>();
+    if (src.srcType == SrcType::TXT) {
+        TextOption txtOpt;
+        txtOpt.text = mixData.txt.c_str();
+        txtOpt.width = src.w;
+        txtOpt.height = src.h;
+        txtOpt.color = {(src.color & 0xff000000) >> THREE_TIME_EIGHT,
+            static_cast<uint32_t>((src.color & 0xff0000) >> TWO_TIME_EIGHT),
+            static_cast<uint32_t>((src.color & 0xff00) >> EIGHT), static_cast<uint32_t>(src.color & 0xff)};
+        txtOpt.textAlign = src.fitType == FitType::FIT_XY ? TEXT_ALIGN_JUSTIFY : TEXT_ALIGN_CENTER;
+        txtOpt.fontWeight = src.style == Style::DEFAULT ? FONT_WEIGHT_400 : FONT_WEIGHT_700;
+
+        if (mixData.isSet & SET_COLOR) {
+            txtOpt.color = mixData.color;
+        }
+        if (mixData.isSet & SET_TEXT_ALIGN) {
+            txtOpt.textAlign = mixData.textAlign;
+        }
+        if (mixData.isSet & SET_FONT_WEIGHT) {
+            txtOpt.fontWeight = mixData.fontWeight;
+        }
+        LOGD("GenSrcTexture tag %{public}s ta ta: %{public}d-%{public}d", src.srcTag.c_str(),
+            txtOpt.textAlign, mixData.textAlign);
+
+        reqPtr->FetchText(bitmap.pixelsData, txtOpt);
+    } else if (src.srcType == SrcType::IMG) {
+        ImageOption imgOpt;
+        imgOpt.uri = mixData.imgUri.c_str();
+        imgOpt.width = src.w;
+        imgOpt.height = src.h;
+        imgOpt.fixType = src.fitType;
+        reqPtr->FetchImg(bitmap.pixelsData, imgOpt);
+        if (bitmap.pixelsData.empty()) {
+            LOGD("MixRender FetchImg error");
+            bitmap.pixelsData.resize(src.w * src.h * FOUR);
+            fill(bitmap.pixelsData.begin(), bitmap.pixelsData.end(), 0xaa);
+        }
+    }
+}
+
+void MixRender::Init()
+{
+    glDisable(GL_DEPTH_TEST);
+    if (!m_animConfig || !m_animConfig->srcMapPtr) {
+        LOGE("MixRender nullptr no need mix");
+        return;
+    }
+    haveSrc = true;
+    int idx = ZERO;
+    bool isEnough = true;
+    std::shared_ptr<SrcMap> srcPtr = m_animConfig->srcMapPtr;
+    m_textureIds.resize(srcPtr->srcSMap.size());
+    for (auto it = srcPtr->srcSMap.begin(); it != srcPtr->srcSMap.end(); ++it) {
+        std::string key = it->first; // id
+        Src src = it->second;
+        BitMap bitmap;
+        
+        if (m_mixData.find(it->second.srcTag) == m_mixData.end()) {
+            LOGW("MixRender Data tag: %{public}s not find.", it->second.srcTag.c_str());
+            isEnough = false;
+            bitmap.pixelsData.resize(src.w * src.h * FOUR);
+            fill(bitmap.pixelsData.begin(), bitmap.pixelsData.end(), 0xaa);
+        } else {
+            MixInputData mixData = m_mixData.at(it->second.srcTag);
+            LOGD("Init tag %{public}s fw ta: %{public}d-%{public}d", it->second.srcTag.c_str(),
+                mixData.fontWeight, mixData.textAlign);
+            if (src.srcType == SrcType::TXT && (mixData.isSet & SET_COLOR)) {
+                ColorARGB color = mixData.color;
+                it->second.color =
+                    ((color.alpha & 0xff) << THREE_TIME_EIGHT) | ((color.red & 0xff) << TWO_TIME_EIGHT) |
+                    ((color.green & 0xff) << EIGHT) | (color.blue & 0xff);
+            }
+            GenSrcTexture(src, bitmap, mixData);
+        }
+            
+        GLuint textureId;
+        bitmap.imgWidth = src.w;
+        bitmap.imgHeight = src.h;
+        TextureLoadUtil::GetInstance().loadTexture(bitmap, &textureId);
+        it->second.srcTextureId = textureId;
+        it->second.drawWidth = it->second.w;
+        it->second.drawHeight = it->second.h;
+        
+        m_textureIds[idx] = textureId;
+        idx++;
+        LOGD("MixRender srcTextureId :%{public}d", textureId);
+    }
+    
+    m_shader = std::make_unique<MixShader>();
+}
+
+MixRender::~MixRender()
+{
+    for (auto textureId : m_textureIds) {
+        if (textureId != 0) {
+            GLuint textureArray[ONE] = {textureId};
+            glDeleteTextures(ONE, textureArray);
+        }
+    }
+}
+
+void MixRender::RenderFrame(MixConfigSize config, Frame frame, Src src)
+{
+    if (!haveSrc) {
+        LOGE("MixRender RenderFrame not have src");
+        return;
+    }
+    if (videoTextureId <= ZERO) {
+        LOGE("MixRender RenderFrame externalTexture error");
+        return;
+    }
+    m_shader->UseProgram();
+    m_vertexArray.Create(config.width, config.height, frame.frame, m_vertexArray.array.get());
+    m_vertexArray.SetArray(m_vertexArray.array.get());
+    m_vertexArray.EnableVertexAttrib(m_shader->m_aPositionLocation);
+    
+    GenSrcCoordsArray(m_srcArray, frame.frame.w, frame.frame.h, src.drawWidth, src.drawHeight, src.fitType);
+    
+    m_srcArray.SetArray(m_srcArray.array.get());
+    m_srcArray.EnableVertexAttrib(m_shader->m_aTextureSrcCoordinatesLocation);
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, src.srcTextureId);
+    glUniform1i(m_shader->m_uTextureSrcUnitLocation, ZERO);
+
+    TexCoordsUtil::Create(config.videoWidth, config.videoHeight, frame.mFrame, m_maskArray.array.get());
+    m_maskArray.SetArray(m_maskArray.array.get());
+    if (frame.mt == NINETY_DEGREES) {
+        TexCoordsUtil::Rotate90(m_maskArray.array.get());
+        m_maskArray.SetArray(m_maskArray.array.get());
+    }
+    m_maskArray.EnableVertexAttrib(m_shader->m_aTextureMaskCoordinatesLocation);
+    
+    glActiveTexture(GL_TEXTURE1);
+    glBindTexture(GL_TEXTURE_2D, videoTextureId);
+    glUniform1i(m_shader->m_uTextureMaskUnitLocation, ONE);
+    
+    if (src.srcType == SrcType::TXT) {
+        glUniform1i(m_shader->m_uIsFillLocation, ONE);
+        std::vector<float> argb;
+        transColor(src.color, argb);
+        glUniform4f(m_shader->m_uColorLocation, argb[ONE], argb[TWO], argb[THREE], argb[ZERO]);
+    } else {
+        glUniform1i(m_shader->m_uIsFillLocation,  ZERO);
+        glUniform4f(m_shader->m_uColorLocation, 0.0f, 0.0f, 0.0f, 0.0f);
+    }
+    
+    glEnable(GL_BLEND);
+    glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+    glDrawArrays(GL_TRIANGLE_STRIP, ZERO, FOUR);
+    glDisable(GL_BLEND);
+}
+
+void MixRender::SetVideoTextureId(GLuint id)
+{
+    videoTextureId = id;
+}
+
+void MixRender::GenSrcCoordsArray(VertexUtil &array, int32_t fw, int32_t fh, int32_t sw, int32_t sh, FitType fitType)
+{
+    if (fitType == FitType::CENTER_FULL) {
+        if (fw <= sw && fh <= sh) {
+            // 中心对齐，不拉伸
+            int32_t gw = (sw - fw) / TWO;
+            int32_t gh = (sh - fh) / TWO;
+            TexCoordsUtil::Create(sw, sh, PointRect(gw, gh, fw, fh), array.array.get());
+        } else { // centerCrop
+            if (fh == 0 || sh == 0) {
+                return;
+            }
+            auto fScale = fw * 1.0f / fh;
+            auto sScale = sw * 1.0f / sh;
+            PointRect srcRect;
+            if (fScale > sScale) {
+                auto w = sw;
+                auto x = ZERO;
+                auto h = (int32_t)(sw / fScale);
+                auto y = (sh - h) / TWO;
+
+                srcRect = std::move(PointRect(x, y, w, h));
+            } else {
+                auto h = sh;
+                auto y = ZERO;
+                auto w = (int32_t)(sh * fScale);
+                auto x = (sw - w) / TWO;
+
+                srcRect = std::move(PointRect(x, y, w, h));
+            }
+            TexCoordsUtil::Create(sw, sh, srcRect, array.array.get());
+        }
+    } else { // 默认 fitXY
+        TexCoordsUtil::Create(fw, fh, PointRect(ZERO, ZERO, fw, fh), array.array.get());
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/mix/mix_shader.cpp b/ohos/vap/vap_module/src/main/cpp/mix/mix_shader.cpp
new file mode 100644
index 00000000..92b7b517
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/mix/mix_shader.cpp
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mix_shader.h"
+
+MixShader::MixShader()
+{
+    m_program = ShaderUtil::CreateProgram(VERTEX, FRAGMENT);
+    m_uTextureSrcUnitLocation = glGetUniformLocation(m_program, U_TEXTURE_SRC_UNIT);
+    m_uTextureMaskUnitLocation = glGetUniformLocation(m_program, U_TEXTURE_MASK_UNIT);
+    m_uIsFillLocation = glGetUniformLocation(m_program, U_IS_FILL);
+    m_uColorLocation = glGetUniformLocation(m_program, U_COLOR);
+
+    m_aPositionLocation = glGetAttribLocation(m_program, A_POSITION);
+    m_aTextureSrcCoordinatesLocation = glGetAttribLocation(m_program, A_TEXTURE_SRC_COORDINATES);
+    m_aTextureMaskCoordinatesLocation = glGetAttribLocation(m_program, A_TEXTURE_MASK_COORDINATES);
+}
+
+void MixShader::UseProgram() { glUseProgram(m_program); }
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/mix/src.cpp b/ohos/vap/vap_module/src/main/cpp/mix/src.cpp
new file mode 100644
index 00000000..dc8265e1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/mix/src.cpp
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "src.h"
+#include "log.h"
+#include "common_const.h"
+
+using namespace CommonConst;
+
+std::map<std::string, SrcType> Src::string2SrcType = {
+    {"unknown", SrcType::UNKNOWN}, {"img", SrcType::IMG}, {"txt", SrcType::TXT}};
+
+std::map<std::string, LoadType> Src::string2LoadType = {
+    {"unknown", LoadType::UNKNOWN}, {"net", LoadType::NET}, {"local", LoadType::LOCAL}};
+
+std::map<std::string, FitType> Src::string2FitType = {{"fitXY", FitType::FIT_XY}, {"centerFull", FitType::CENTER_FULL}};
+
+std::map<std::string, Style> Src::string2Style = {{"default", Style::DEFAULT}, {"b", Style::BOLD}};
+
+Src::Src(json jsonSrc)
+{
+    srcId = jsonSrc.at("srcId").get<std::string>();
+    std::string tmpStr = jsonSrc.at("srcType").get<std::string>();
+    srcType = stringToSrcTypeFunc(tmpStr);
+    tmpStr = jsonSrc.at("loadType").get<std::string>();
+    loadType = stringToLoadTypeFunc(tmpStr);
+    srcTag = jsonSrc.at("srcTag").get<std::string>();
+    txt = srcTag;
+    std::string colorStr;
+    if (jsonSrc.find("color") != jsonSrc.end()) {
+        colorStr = jsonSrc.at("color").get<std::string>();
+        colorStr.erase(0, 1); // 去掉字符串开头的 #
+        color = std::stoi(colorStr, nullptr, TWO_TIME_EIGHT);
+        if (((color >> THREE_TIME_EIGHT) & 0xff) == 0) {
+            color |= 0xff << THREE_TIME_EIGHT;
+        }
+    }
+    if (jsonSrc.find("style") != jsonSrc.end()) {
+        tmpStr = jsonSrc.at("style").get<std::string>();
+        style = stringToStyleFunc(tmpStr);
+    }
+    w = jsonSrc.at("w").get<int32_t>();
+    h = jsonSrc.at("h").get<int32_t>();
+    tmpStr = jsonSrc.at("fitType").get<std::string>();
+    fitType = stringToFitTypeFunc(tmpStr);
+}
+
+void Src::PrintInfo()
+{
+    LOGD("srcId: %{public}s srcType: %{public}d, loadType:%{public}d, srcTag:%{public}s,"
+        "color:%{public}x, style:%{public}d, w:%{public}d, h:%{public}d, fitType: %{public}d, "
+        "drawWidth: %{public}d,drawHeight: %{public}d, srcTextureId: %{public}d",
+        srcId.c_str(), srcType, loadType, srcTag.c_str(), color, style, w, h, fitType, drawWidth, drawHeight,
+        srcTextureId);
+}
+
+SrcMap::SrcMap(json jsonObj)
+{
+    auto srcJsonArray = jsonObj.at("src");
+    size_t srcLen = srcJsonArray.size();
+    for (int i = 0; i < srcLen; i++) {
+        auto srcJson = srcJsonArray[i];
+        Src src = Src(srcJson);
+        if (src.srcType != SrcType::UNKNOWN) { // 不认识的srcType丢弃
+            srcSMap.insert(std::make_pair(src.srcId, src));
+        }
+    }
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/napi/n_func_arg.cpp b/ohos/vap/vap_module/src/main/cpp/napi/n_func_arg.cpp
new file mode 100644
index 00000000..bf35eb14
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/napi/n_func_arg.cpp
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2021-2023 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "n_func_arg.h"
+
+using namespace std;
+
+NFuncArg::NFuncArg(napi_env env, napi_callback_info info) : env_(env), info_(info) {}
+
+NFuncArg::~NFuncArg() {}
+
+void NFuncArg::SetArgc(size_t argc)
+{
+    argc_ = argc;
+}
+
+void NFuncArg::SetThisVar(napi_value thisVar)
+{
+    thisVar_ = thisVar;
+}
+
+size_t NFuncArg::GetArgc(void) const
+{
+    return argc_;
+}
+
+void NFuncArg::SetMaxArgc(size_t maxArgc)
+{
+    maxArgc_ = maxArgc;
+}
+
+size_t NFuncArg::GetMaxArgc(void) const
+{
+    return maxArgc_;
+}
+
+napi_value NFuncArg::GetThisVar(void) const
+{
+    return thisVar_;
+}
+
+napi_value NFuncArg::GetArg(size_t argPos) const
+{
+    return (argPos < GetArgc()) ? argv_[argPos] : nullptr;
+}
+
+napi_value NFuncArg::operator[](size_t argPos) const
+{
+    return GetArg(argPos);
+}
+
+bool NFuncArg::InitArgs(std::function<bool()> argcChecker)
+{
+    SetArgc(0);
+    argv_.reset();
+
+    size_t argc;
+    napi_value thisVar;
+    napi_status status = napi_get_cb_info(env_, info_, &argc, nullptr, &thisVar, nullptr);
+    if (status != napi_ok) {
+        return false;
+    }
+    if (argc) {
+        argv_ = make_unique<napi_value[]>(argc);
+        status = napi_get_cb_info(env_, info_, &argc, argv_.get(), &thisVar, nullptr);
+        if (status != napi_ok) {
+            return false;
+        }
+    }
+    SetArgc(argc);
+    SetThisVar(thisVar);
+    SetMaxArgc(argc);
+    return argcChecker();
+}
+
+bool NFuncArg::InitArgs(size_t argc)
+{
+    return InitArgs([argc, this]() {
+        size_t realArgc = GetArgc();
+        if (argc != realArgc) {
+            return false;
+        }
+        return true;
+    });
+}
+
+bool NFuncArg::InitArgs(size_t minArgc, size_t maxArgc)
+{
+    return InitArgs([minArgc, maxArgc, this]() {
+        size_t realArgc = GetArgc();
+        if (minArgc > realArgc || maxArgc < realArgc) {
+            return false;
+        }
+        SetMaxArgc(maxArgc);
+        return true;
+    });
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/napi/n_func_arg.h b/ohos/vap/vap_module/src/main/cpp/napi/n_func_arg.h
new file mode 100644
index 00000000..6c089fef
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/napi/n_func_arg.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ROSENRENDER_ROSEN_FUNC_ARG
+#define ROSENRENDER_ROSEN_FUNC_ARG
+
+#include <functional>
+#include <js_native_api.h>
+#include <js_native_api_types.h>
+#include <map>
+#include "n_val.h"
+
+enum NARG_CNT {
+    ZERO = 0,
+    ONE = 1,
+    TWO = 2,
+    THREE = 3,
+    FOUR = 4,
+    FIVE = 5,
+    SIX = 6,
+    SEVEN = 7,
+    EIGHT = 8,
+    NINE = 9,
+    TEN = 10,
+    ELEVEN = 11,
+    TWELVE = 12,
+};
+
+enum NARG_POS {
+    FIRST = 0,
+    SECOND = 1,
+    THIRD = 2,
+    FOURTH = 3,
+    FIFTH = 4,
+    SIXTH = 5,
+    SEVENTH = 6,
+    EIGHTH = 7,
+    NINTH = 8,
+    TENTH = 9,
+    ELEVENTH = 10,
+    TWELVETH = 11,
+};
+
+class NFuncArg final {
+public:
+    NFuncArg(napi_env env, napi_callback_info info);
+    virtual ~NFuncArg();
+
+    bool InitArgs(size_t argc);
+    bool InitArgs(size_t minArgc, size_t maxArgc);
+    size_t GetArgc() const;
+    size_t GetMaxArgc(void) const;
+    napi_value GetThisVar() const;
+    napi_value operator[](size_t argPos) const;
+    napi_value GetArg(size_t argPos) const;
+
+private:
+    bool InitArgs(std::function<bool()> argcChecker);
+    void SetArgc(size_t argc);
+    void SetThisVar(napi_value thisVar);
+    void SetMaxArgc(size_t maxArgc);
+    napi_env env_ = nullptr;
+    napi_callback_info info_ = nullptr;
+    size_t argc_ = 0;
+    size_t maxArgc_ = 0;
+    std::unique_ptr<napi_value[]> argv_ = {nullptr};
+    napi_value thisVar_ = nullptr;
+};
+
+#endif // ROSENRENDER_ROSEN_FUNC_ARG
diff --git a/ohos/vap/vap_module/src/main/cpp/napi/n_val.cpp b/ohos/vap/vap_module/src/main/cpp/napi/n_val.cpp
new file mode 100644
index 00000000..54565b02
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/napi/n_val.cpp
@@ -0,0 +1,436 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string>
+#include "n_val.h"
+
+using namespace std;
+
+NVal::NVal(napi_env nEnv, napi_value nVal = nullptr) : env_(nEnv), val_(nVal) {}
+
+NVal::operator bool() const
+{
+    return env_ && val_;
+}
+
+bool NVal::TypeIs(napi_valuetype expType) const
+{
+    if (!*this) {
+        return false;
+    }
+
+    napi_valuetype valueType;
+    napi_typeof(env_, val_, &valueType);
+
+    if (expType != valueType) {
+        return false;
+    }
+    return true;
+}
+
+bool NVal::IsNull() const
+{
+    if (val_ == nullptr) {
+        return true;
+    }
+    napi_valuetype valueType;
+    napi_typeof(env_, val_, &valueType);
+    if (valueType == napi_null) {
+        return true;
+    }
+    if (valueType == napi_undefined) {
+        return true;
+    }
+    return false;
+}
+
+bool NVal::IsUndefined() const
+{
+    if (val_ == nullptr) {
+        return false;
+    }
+    napi_valuetype valueType;
+    napi_typeof(env_, val_, &valueType);
+    if (valueType == napi_undefined) {
+        return true;
+    }
+    return false;
+}
+
+bool NVal::IsBufferArray() const
+{
+    if (val_ == nullptr) {
+        return false;
+    }
+    bool type = false;
+    napi_is_dataview(env_, val_, &type);
+    if (type) {
+        return true;
+    }
+    napi_is_arraybuffer(env_, val_, &type);
+    if (type) {
+        return true;
+    }
+    napi_is_typedarray(env_, val_, &type);
+    if (type) {
+        return true;
+    }
+    return false;
+}
+
+tuple<bool, bool> NVal::IsArray() const
+{
+    bool res = false;
+    napi_status status = napi_is_array(env_, val_, &res);
+    return make_tuple(status == napi_ok, res);
+}
+
+tuple<bool, unique_ptr<char[]>, size_t> NVal::ToUTF8String() const
+{
+    napi_valuetype valueType;
+    napi_typeof(env_, val_, &valueType);
+    if (valueType == napi_null) {
+        unique_ptr<char[]> str = make_unique<char[]>(1);
+        str[0] = '\0';
+        return {true, move(str), 0};
+    } else if (valueType != napi_string) {
+        return {false, nullptr, 0};
+    }
+    size_t strLen = 0;
+    napi_status status = napi_get_value_string_utf8(env_, val_, nullptr, -1, &strLen);
+    if (status != napi_ok) {
+        return {false, nullptr, 0};
+    }
+
+    size_t bufLen = strLen + 1;
+    unique_ptr<char[]> str = make_unique<char[]>(bufLen);
+    status = napi_get_value_string_utf8(env_, val_, str.get(), bufLen, &strLen);
+    return make_tuple(status == napi_ok, move(str), strLen);
+}
+
+tuple<bool, unique_ptr<char[]>, size_t> NVal::ToUTF16String() const
+{
+#ifdef FILE_SUBSYSTEM_DEV_ON_PC
+    size_t strLen = 0;
+    napi_status status = napi_get_value_string_utf16(env_, val_, nullptr, -1, &strLen);
+    if (status != napi_ok) {
+        return { false, nullptr, 0 };
+    }
+
+    auto str = make_unique<char16_t[]>(++strLen);
+    status = napi_get_value_string_utf16(env_, val_, str.get(), strLen, nullptr);
+    if (status != napi_ok) {
+        return { false, nullptr, 0 };
+    }
+
+    strLen = reinterpret_cast<char *>(str.get() + strLen) - reinterpret_cast<char *>(str.get());
+    auto strRet = unique_ptr<char[]>(reinterpret_cast<char *>(str.release()));
+    return { true, move(strRet), strLen };
+#else
+    // Note that quickjs doesn't support utf16
+    return ToUTF8String();
+#endif
+}
+
+tuple<bool, void *> NVal::ToPointer() const
+{
+    void *res = nullptr;
+    napi_status status = napi_get_value_external(env_, val_, &res);
+    return make_tuple(status == napi_ok, res);
+}
+
+tuple<bool, bool> NVal::IsTypeArray() const
+{
+    bool res = false;
+    napi_status status = napi_is_typedarray(env_, val_, &res);
+    return make_tuple(status == napi_ok, res);
+}
+
+bool NVal::IsDataView() const
+{
+    bool res = false;
+    napi_status status = napi_is_dataview(env_, val_, &res);
+    return ((status == napi_ok) && res);
+}
+
+tuple<bool, bool> NVal::ToBool() const
+{
+    bool flag = false;
+    if (IsNull()) {
+        return make_tuple(true, flag);
+    }
+    napi_status status = napi_get_value_bool(env_, val_, &flag);
+    return make_tuple(status == napi_ok, flag);
+}
+
+tuple<bool, double> NVal::ToDouble() const
+{
+    double res = 0.0;
+    napi_status status = napi_get_value_double(env_, val_, &res);
+    return make_tuple(status == napi_ok, res);
+}
+
+tuple<bool, GLfloat> NVal::ToFloat() const
+{
+    if (IsUndefined()) {
+        float f = 0;
+        return make_tuple(true, f);
+    }
+    if (IsNull()) {
+        return make_tuple(true, 0);
+    }
+    double res = 0.0;
+    napi_status status = napi_get_value_double(env_, val_, &res);
+    return make_tuple(status == napi_ok, static_cast<GLfloat>(res));
+}
+
+tuple<bool, int32_t> NVal::ToInt32() const
+{
+    int32_t res = 0;
+    if (IsNull()) {
+        return make_tuple(true, res);
+    }
+    napi_status status = napi_get_value_int32(env_, val_, &res);
+    return make_tuple(status == napi_ok, res);
+}
+
+tuple<bool, uint32_t> NVal::ToUint32() const
+{
+    uint32_t res = 0;
+    if (IsNull()) {
+        return make_tuple(true, res);
+    }
+    napi_status status = napi_get_value_uint32(env_, val_, &res);
+    return make_tuple(status == napi_ok, res);
+}
+
+tuple<bool, int64_t> NVal::ToInt64() const
+{
+    int64_t res = 0;
+    if (IsNull()) {
+        return make_tuple(true, res);
+    }
+    napi_status status = napi_get_value_int64(env_, val_, &res);
+    return make_tuple(status == napi_ok, res);
+}
+
+tuple<bool, GLsizei> NVal::ToGLsizei() const
+{
+    int64_t res = 0;
+    if (IsNull()) {
+        return make_tuple(true, res);
+    }
+    napi_status status = napi_get_value_int64(env_, val_, &res);
+    return make_tuple(status == napi_ok, static_cast<GLsizei>(res));
+}
+
+tuple<bool, GLenum> NVal::ToGLenum() const
+{
+    int64_t res = 0;
+    napi_valuetype valueType;
+    napi_typeof(env_, val_, &valueType);
+    if (valueType == napi_null) {
+        return make_tuple(true, static_cast<GLenum>(res));
+    }
+    napi_status status = napi_get_value_int64(env_, val_, &res);
+    return make_tuple(status == napi_ok, static_cast<GLenum>(res));
+}
+
+tuple<bool, void *, size_t> NVal::ToArraybuffer() const
+{
+    void *buf = nullptr;
+    size_t bufLen = 0;
+    bool status = napi_get_arraybuffer_info(env_, val_, &buf, &bufLen);
+    return make_tuple(status == napi_ok, buf, bufLen);
+}
+
+tuple<bool, napi_typedarray_type, void *, size_t> NVal::ToTypedArray() const
+{
+    napi_typedarray_type type;
+    napi_value in_array_buffer = nullptr;
+    size_t byteOffset;
+    size_t length;
+    void *data = nullptr;
+    napi_status status = napi_get_typedarray_info(env_, val_, &type, &length, (void **) &data, &in_array_buffer,
+        &byteOffset);
+    return make_tuple(status == napi_ok, type, data, length);
+}
+
+tuple<bool, void *, size_t> NVal::ToDataview() const
+{
+    size_t bufLen = 0;
+    void *buf = nullptr;
+    napi_value arraybuffer = nullptr;
+    size_t byteoff = 0;
+    bool status = napi_get_dataview_info(env_, val_, &bufLen, &buf, &arraybuffer, &byteoff);
+    return make_tuple(status == napi_ok, buf, bufLen);
+}
+
+tuple<bool, void *, size_t, size_t, napi_typedarray_type> NVal::ToTypedArrayInfo() const
+{
+    napi_typedarray_type type;
+    napi_value in_array_buffer = nullptr;
+    size_t byteOffset;
+    size_t length;
+    void *data = nullptr;
+    napi_status status =
+        napi_get_typedarray_info(env_, val_, &type, &length, (void **)&data, &in_array_buffer, &byteOffset);
+    return make_tuple(status == napi_ok, data, length, byteOffset, type);
+}
+
+bool NVal::HasProp(string propName) const
+{
+    bool res = false;
+
+    if (!env_ || !val_ || !TypeIs(napi_object)) {
+        return false;
+    }
+
+    napi_status status = napi_has_named_property(env_, val_, propName.c_str(), &res);
+    return (status == napi_ok) && res;
+}
+
+NVal NVal::GetProp(string propName) const
+{
+    if (!HasProp(propName)) {
+        return {env_, nullptr};
+    }
+    napi_value prop = nullptr;
+    napi_status status = napi_get_named_property(env_, val_, propName.c_str(), &prop);
+    if (status != napi_ok) {
+        return {env_, nullptr};
+    }
+    return NVal(env_, prop);
+}
+
+bool NVal::AddProp(vector<napi_property_descriptor> &&propVec) const
+{
+    if (!TypeIs(napi_valuetype::napi_object)) {
+        return false;
+    }
+    napi_status status = napi_define_properties(env_, val_, propVec.size(), propVec.data());
+    if (status != napi_ok) {
+        return false;
+    }
+    return true;
+}
+
+bool NVal::AddProp(string propName, napi_value val) const
+{
+    if (!TypeIs(napi_valuetype::napi_object) || HasProp(propName)) {
+        return false;
+    }
+
+    napi_status status = napi_set_named_property(env_, val_, propName.c_str(), val);
+    if (status != napi_ok) {
+        return false;
+    }
+    return true;
+}
+
+NVal NVal::CreateUndefined(napi_env env)
+{
+    napi_value res = nullptr;
+    napi_get_undefined(env, &res);
+    return {env, res};
+}
+
+NVal NVal::CreateNull(napi_env env)
+{
+    napi_value res = nullptr;
+    napi_get_null(env, &res);
+    return {env, res};
+}
+
+NVal NVal::CreateInt64(napi_env env, int64_t val)
+{
+    napi_value res = nullptr;
+    napi_create_int64(env, val, &res);
+    return {env, res};
+}
+
+NVal NVal::CreateObject(napi_env env)
+{
+    napi_value res = nullptr;
+    napi_create_object(env, &res);
+    return {env, res};
+}
+
+NVal NVal::CreateBool(napi_env env, bool val)
+{
+    napi_value res = nullptr;
+    napi_get_boolean(env, val, &res);
+    return {env, res};
+}
+
+NVal NVal::CreateUTF8String(napi_env env, std::string str)
+{
+    napi_value res = nullptr;
+    napi_create_string_utf8(env, str.c_str(), str.length(), &res);
+    return {env, res};
+}
+
+NVal NVal::CreateUint8Array(napi_env env, void *buf, size_t bufLen)
+{
+    napi_value output_buffer = nullptr;
+    napi_create_external_arraybuffer(env, buf, bufLen,
+        [](napi_env env, void *finalize_data, void *finalize_hint) { free(finalize_data); },
+        NULL, &output_buffer);
+    napi_value output_array = nullptr;
+    napi_create_typedarray(env, napi_uint8_array, bufLen, output_buffer, 0, &output_array);
+    return {env, output_array};
+}
+
+NVal NVal::CreateDouble(napi_env env, double val)
+{
+    napi_value res = nullptr;
+    napi_create_double(env, val, &res);
+    return {env, res};
+}
+
+napi_property_descriptor NVal::DeclareNapiProperty(const char *name, napi_value val)
+{
+    return {(name), nullptr, nullptr, nullptr, nullptr, val, napi_default, nullptr};
+}
+
+napi_property_descriptor NVal::DeclareNapiStaticProperty(const char *name, napi_value val)
+{
+    return {(name), nullptr, nullptr, nullptr, nullptr, val, napi_static, nullptr};
+}
+
+napi_property_descriptor NVal::DeclareNapiFunction(const char *name, napi_callback func)
+{
+    return {(name), nullptr, (func), nullptr, nullptr, nullptr, napi_default, nullptr};
+}
+
+napi_property_descriptor NVal::DeclareNapiStaticFunction(const char *name, napi_callback func)
+{
+    return {(name), nullptr, (func), nullptr, nullptr, nullptr, napi_static, nullptr};
+}
+
+napi_property_descriptor NVal::DeclareNapiGetter(const char *name, napi_callback getter)
+{
+    return {(name), nullptr, nullptr, (getter), nullptr, nullptr, napi_default, nullptr};
+}
+
+napi_property_descriptor NVal::DeclareNapiSetter(const char *name, napi_callback setter)
+{
+    return {(name), nullptr, nullptr, nullptr, (setter), nullptr, napi_default, nullptr};
+}
+
+napi_property_descriptor NVal::DeclareNapiGetterSetter(const char *name, napi_callback getter, napi_callback setter)
+{
+    return {(name), nullptr, nullptr, (getter), (setter), nullptr, napi_default, nullptr};
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/napi/n_val.h b/ohos/vap/vap_module/src/main/cpp/napi/n_val.h
new file mode 100644
index 00000000..1049bcad
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/napi/n_val.h
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VAP_ROSEN_VAL
+#define VAP_ROSEN_VAL
+
+#include <GLES3/gl3.h>
+#include <js_native_api.h>
+#include <js_native_api_types.h>
+// #pragma once
+
+#include <memory>
+
+class NVal final {
+public:
+    NVal() = default;
+
+    NVal(napi_env nEnv, napi_value nVal);
+
+    NVal(const NVal&) = default;
+    NVal &operator=(const NVal &) = default;
+
+    virtual ~NVal() = default;
+
+    // NOTE! env_ and val_ is LIKELY to be null
+    napi_env env_ = nullptr;
+    napi_value val_ = nullptr;
+
+    explicit operator bool() const;
+
+    bool TypeIs(napi_valuetype expType) const;
+
+    bool IsNull() const;
+
+    bool IsUndefined() const;
+
+    bool IsBufferArray() const;
+
+    /* SHOULD ONLY BE USED FOR EXPECTED TYPE */
+    std::tuple<bool, std::unique_ptr<char[]>, size_t> ToUTF8String() const;
+
+    std::tuple<bool, std::unique_ptr<char[]>, size_t> ToUTF16String() const;
+
+    std::tuple<bool, void *> ToPointer() const;
+
+    std::tuple<bool, bool> ToBool() const;
+
+    std::tuple<bool, double> ToDouble() const;
+
+    std::tuple<bool, GLfloat> ToFloat() const;
+
+    std::tuple<bool, int32_t> ToInt32() const;
+
+    std::tuple<bool, uint32_t> ToUint32() const;
+
+    std::tuple<bool, int64_t> ToInt64() const;
+
+    std::tuple<bool, GLenum> ToGLenum() const;
+
+    std::tuple<bool, GLsizei> ToGLsizei() const;
+
+    std::tuple<bool, void *, size_t> ToArraybuffer() const;
+
+    std::tuple<bool, float *, size_t> ToFloatBuffer() const;
+
+    std::tuple<bool, napi_typedarray_type, void *, size_t> ToTypedArray() const;
+
+    std::tuple<bool, bool> IsTypeArray() const;
+
+    std::tuple<bool, void *, size_t> ToDataview() const;
+
+    std::tuple<bool, bool> IsArray() const;
+
+    bool IsDataView() const;
+
+    std::tuple<bool, void *, size_t, size_t, napi_typedarray_type> ToTypedArrayInfo() const;
+
+    /* Static helpers to create js objects */
+    static NVal CreateUndefined(napi_env env);
+
+    static NVal CreateNull(napi_env env);
+
+    static NVal CreateInt64(napi_env env, int64_t val);
+
+    static NVal CreateObject(napi_env env);
+
+    static NVal CreateBool(napi_env env, bool val);
+
+    static NVal CreateUTF8String(napi_env env, std::string str);
+
+    static NVal CreateUint8Array(napi_env env, void *buf, size_t bufLen);
+
+    static NVal CreateDouble(napi_env env, double val);
+
+    /* SHOULD ONLY BE USED FOR OBJECT */
+    bool HasProp(std::string propName) const;
+
+    NVal GetProp(std::string propName) const;
+
+    bool AddProp(std::vector<napi_property_descriptor> &&propVec) const;
+
+    bool AddProp(std::string propName, napi_value val) const;
+
+    /* Static helpers to create prop of js objects */
+    static napi_property_descriptor DeclareNapiProperty(const char *name, napi_value val);
+
+    static napi_property_descriptor DeclareNapiStaticProperty(const char *name, napi_value val);
+
+    static napi_property_descriptor DeclareNapiFunction(const char *name, napi_callback func);
+
+    static napi_property_descriptor DeclareNapiStaticFunction(const char *name, napi_callback func);
+
+    static napi_property_descriptor DeclareNapiGetter(const char *name, napi_callback getter);
+
+    static napi_property_descriptor DeclareNapiSetter(const char *name, napi_callback setter);
+
+    static inline napi_property_descriptor DeclareNapiGetterSetter(const char *name,
+        napi_callback getter, napi_callback setter);
+};
+#endif // VAP_ROSEN_VAL
diff --git a/ohos/vap/vap_module/src/main/cpp/napi_init.cpp b/ohos/vap/vap_module/src/main/cpp/napi_init.cpp
new file mode 100644
index 00000000..7f6e47ee
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/napi_init.cpp
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <cstdint>
+#include <hilog/log.h>
+#include <string>
+#include "napi/n_func_arg.h"
+#include "plugin_manager.h"
+
+static napi_value TesFunc(napi_env env, napi_callback_info info)
+{
+    LOGD("enter TesFunc");
+    if ((nullptr == env) || (nullptr == info)) {
+        LOGE("TesFunc: env or info is null");
+        return nullptr;
+    }
+    
+    return nullptr;
+}
+
+EXTERN_C_START
+static napi_value Init(napi_env env, napi_value exports)
+{
+    LOGD("Init begins");
+    if ((nullptr == env) || (nullptr == exports)) {
+        LOGE("env or exports is null");
+        return nullptr;
+    }
+
+    napi_property_descriptor desc[] = {
+        { "getContext", nullptr, PluginManager::GetContext, nullptr, nullptr, nullptr, napi_default, nullptr },
+    };
+    if (napi_ok != napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc)) {
+        LOGE("napi_define_properties failed");
+        return nullptr;
+    }
+
+    PluginManager::GetInstance()->Export(env, exports);
+    return exports;
+}
+EXTERN_C_END
+
+static napi_module nativerenderModule = {
+    .nm_version = 1,
+    .nm_flags = 0,
+    .nm_filename = nullptr,
+    .nm_register_func = Init,
+    .nm_modname = "vap",
+    .nm_priv = ((void *)0),
+    .reserved = { 0 }
+};
+
+extern "C" __attribute__((constructor)) void RegisterModule(void)
+{
+    napi_module_register(&nativerenderModule);
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/player.cpp b/ohos/vap/vap_module/src/main/cpp/player.cpp
new file mode 100644
index 00000000..5b74a527
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/player.cpp
@@ -0,0 +1,687 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "player.h"
+
+#include <chrono>
+#include <cstdint>
+#include <memory>
+#include <multimedia/player_framework/native_averrors.h>
+#include <fcntl.h>
+#include <mutex>
+#include <sys/stat.h>
+#include <vector>
+#include "log.h"
+#include "vap_callback.h"
+
+#undef LOG_TAG
+#define LOG_TAG "player"
+
+namespace {
+using namespace std::chrono_literals;
+}
+
+Player::~Player()
+{
+    callbackAll_ = nullptr;
+    Stop();
+    StartRelease();
+    if (renderThread_ && renderThread_->joinable()) {
+        renderThread_->join();
+    }
+}
+
+static int32_t OpenFile(VAPInfo &info)
+{
+    const char *file = info.uri.c_str();
+    info.inputFd = -1;
+    info.inputFileSize = 0;
+    info.inputFileOffset = 0;
+    info.inputFd = open(file, O_RDONLY);
+    LOGD("Open file: fd = %{public}d", info.inputFd);
+    if (info.inputFd == -1) {
+        LOGE("cont open file");
+        return AV_ERR_UNKNOWN;
+    }
+
+    struct stat fileStatus {};
+    if (stat(file, &fileStatus) == 0) {
+        info.inputFileSize = static_cast<size_t>(fileStatus.st_size);
+        LOGD("Get stat:%{public}zu", info.inputFileSize);
+        return AV_ERR_OK;
+    } else {
+        LOGE("Get stat file size error");
+        return AV_ERR_UNKNOWN;
+    }
+}
+
+int32_t Player::InitAudio()
+{
+    audioDecoder_ = std::make_unique<AudioDecoder>();
+    int32_t ret = audioDecoder_->CreateAudioDecoder(sampleInfo_.audioCodecMime);
+    if (ret != AV_ERR_OK) {
+        LOGE("Create audio decoder failed");
+        return AV_ERR_UNKNOWN;
+    }
+    audioSignal_ = new ADecSignal;
+    ret = audioDecoder_->Config(sampleInfo_, audioSignal_);
+    if (ret != AV_ERR_OK) {
+        LOGE("audio Decoder config failed");
+        return AV_ERR_UNKNOWN;
+    }
+    AudioInitData audioInitData;
+    audioInitData.channelCount = sampleInfo_.channelCount;
+    audioInitData.samplingRate = sampleInfo_.sampleRate;
+    InitAudioPlayer(audioInitData);
+    return AV_ERR_OK;
+}
+
+void Player::InitControlSignal()
+{
+    if (sampleInfo_.frameRate <= 0) {
+        sampleInfo_.frameRate = DEFAULT_FRAME_RATE;
+    }
+    sampleInfo_.frameInterval = MICROSECOND / int64_t(sampleInfo_.frameRate);
+    isReleased_ = false;
+    isStop_ = false;
+    isPause_ = false;
+    isVideoEndOfFile_ = false;
+}
+
+int32_t Player::Init(VAPInfo &info)
+{
+    CallBackJS(VapState::READY, CallbackType::STATE_CHANGE);
+    if (isStarted_) {
+        LOGE("Already started.");
+        return AV_ERR_UNKNOWN;
+    }
+    std::lock_guard<std::mutex> lock(mutex_);
+    if (OpenFile(info) != AV_ERR_OK) {
+        CallBackJS(VapState::FAILED, CallbackType::STATE_CHANGE, AV_ERR_UNKNOWN);
+        return AV_ERR_UNKNOWN;
+    }
+    
+    sampleInfo_ = info;
+    videoDecoder_ = std::make_unique<VideoDecoder>();
+    if (!videoDecoder_) {
+        LOGE("Create videoDecoder_ failed");
+        CallBackJS(VapState::FAILED, CallbackType::STATE_CHANGE, AV_ERR_UNKNOWN);
+        return AV_ERR_UNKNOWN;
+    }
+
+    demuxer_ = std::make_unique<Demuxer>();
+    int32_t ret = demuxer_->CreateDemuxer(sampleInfo_);
+    if (ret != AV_ERR_OK) {
+        LOGE("Create demuxer failed");
+        CallBackJS(VapState::FAILED, CallbackType::STATE_CHANGE, ret);
+        return AV_ERR_UNKNOWN;
+    }
+    
+    ret = videoDecoder_->CreateVideoDecoder(sampleInfo_.codecMime);
+    if (ret != AV_ERR_OK) {
+        LOGE("Create video decoder failed");
+        CallBackJS(VapState::FAILED, CallbackType::STATE_CHANGE, ret);
+        return AV_ERR_UNKNOWN;
+    }
+
+    if (demuxer_->hasAudio()) {
+        ret = InitAudio();
+        if (ret != AV_ERR_OK) {
+            CallBackJS(VapState::FAILED, CallbackType::STATE_CHANGE, ret);
+            return ret;
+        }
+    }
+    sampleInfo_.frameRate *= speed_;
+    // audioBitrate
+    signal_ = new VDecSignal;
+    ret = videoDecoder_->Config(sampleInfo_, signal_);
+    if (ret != AV_ERR_OK) {
+        LOGE("Decoder config failed");
+        return AV_ERR_UNKNOWN;
+    }
+    
+    InitControlSignal();
+    return Start();
+}
+
+int32_t Player::Start()
+{
+    if (isStarted_) {
+        LOGE("Already started.");
+        return AV_ERR_UNKNOWN;
+    }
+    if (!videoDecoder_ || !demuxer_) {
+        LOGE("Please Init first.");
+        return AV_ERR_UNKNOWN;
+    }
+    isStarted_ = true;
+    int32_t ret = videoDecoder_->StartVideoDecoder();
+    if (ret != AV_ERR_OK) {
+        LOGE("Decoder start failed");
+        return AV_ERR_UNKNOWN;
+    }
+    if (demuxer_->hasAudio()) {
+        LOGW("video has audio");
+        ret = audioDecoder_->StartAudioDecoder();
+        if (ret != AV_ERR_OK) {
+            LOGE("audio Decoder start failed");
+            return AV_ERR_UNKNOWN;
+        }
+        
+        decAudioInputThread_ = std::make_unique<std::thread>(&Player::DecAudioInputThread, this);
+        decAudioOutputThread_ = std::make_unique<std::thread>(&Player::DecAudioOutputThread, this);
+        if (decAudioInputThread_ == nullptr || decAudioOutputThread_ == nullptr) {
+            LOGE("Create thread failed");
+            ReleaseAudio();
+            return AV_ERR_UNKNOWN;
+        }
+    }
+
+    decInputThread_ = std::make_unique<std::thread>(&Player::DecInputThread, this);
+    decOutputThread_ = std::make_unique<std::thread>(&Player::DecOutputThread, this);
+
+    if (renderThread_ && renderThread_->joinable()) {
+        renderThread_->join();
+    }
+    renderThread_ = std::make_unique<std::thread>(&Player::RenderThread, this);
+    if (decInputThread_ == nullptr || decOutputThread_ == nullptr || renderThread_ == nullptr) {
+        LOGE("Create thread failed");
+        Release();
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+void Player::StartRelease()
+{
+    std::unique_lock<std::mutex> lock(mutex_);
+    if (isReleased_) return;
+
+    CallBackJS(VapState::COMPLETE, CallbackType::STATE_CHANGE);
+    ReleaseAudio();
+    Release();
+}
+
+void Player::ReleaseAudio()
+{
+    if (audioRenderer_) {
+        OH_AudioRenderer_Flush(audioRenderer_);
+        OH_AudioRenderer_Release(audioRenderer_);
+        audioRenderer_ = nullptr;
+    }
+    if (builder_) {
+        OH_AudioStreamBuilder_Destroy(builder_);
+        builder_ = nullptr;
+    }
+    if (decAudioInputThread_ && decAudioInputThread_->joinable()) {
+        decAudioInputThread_->join();
+        decAudioInputThread_.reset();
+    }
+    
+    if (decAudioOutputThread_ && decAudioOutputThread_->joinable()) {
+        decAudioOutputThread_->join();
+        decAudioOutputThread_.reset();
+    }
+
+    if (audioDecoder_ != nullptr) {
+        audioDecoder_->Release();
+        audioDecoder_.reset();
+    }
+    if (audioSignal_ != nullptr) {
+        delete audioSignal_;
+        audioSignal_ = nullptr;
+    }
+    LOGW("Player: audio release end");
+}
+
+void Player::Release()
+{
+    if (decInputThread_ && decInputThread_->joinable()) {
+        decInputThread_->join();
+    }
+    decInputThread_.reset();
+
+    if (decOutputThread_ && decOutputThread_->joinable()) {
+        decOutputThread_->join();
+    }
+    decOutputThread_.reset();
+    
+    if (videoDecoder_ != nullptr) {
+        videoDecoder_->Release();
+        videoDecoder_.reset();
+    }
+    if (demuxer_ != nullptr) {
+        demuxer_->Release();
+        demuxer_.reset();
+    }
+    
+    if (sampleInfo_.inputFd != -1) {
+        close(sampleInfo_.inputFd);
+        sampleInfo_.inputFd = -1;
+    }
+    auto emptyQueue = std::queue<std::vector<uint8_t>>();
+    renderQueue_.swap(emptyQueue);
+    if (signal_ != nullptr) {
+        delete signal_;
+        signal_ = nullptr;
+    }
+    
+    ResetControlSignal();
+    LOGW("Player: release end: %{public}d", loops_);
+}
+
+void Player::ResetControlSignal()
+{
+    isStop_ = false;
+    isStarted_ = false;
+    isReleased_ = true;
+    isPause_ = false;
+    isVideoEndOfFile_ = false;
+    renderFrameCurIdx_ = 0;
+    isSetVideoMode_ = false;
+    speed_ = 1.0;
+    CallBackJS(VapState::DESTROY, CallbackType::STATE_CHANGE);
+    if (callbackRefs_.find(CallbackType::PLAY_DONE) != callbackRefs_.end() && callbackAll_) {
+        CallbackContext *context = new CallbackContext;
+        context->callbackRef = callbackRefs_[CallbackType::PLAY_DONE];
+        context->env = env_;
+        callbackAll_(context);
+        callbackRefs_.erase(CallbackType::PLAY_DONE);
+        LOGD("play end callback");
+    }
+}
+
+void Player::InitJSAnimConfig()
+{
+    if (eglCore_->m_animConfig) {
+        jsAnimConfig_.version = eglCore_->m_animConfig->version;
+        jsAnimConfig_.totalFrames = eglCore_->m_animConfig->totalFrames;
+        jsAnimConfig_.width = eglCore_->m_animConfig->width;
+        jsAnimConfig_.height = eglCore_->m_animConfig->height;
+        jsAnimConfig_.videoWidth = eglCore_->m_animConfig->videoWidth;
+        jsAnimConfig_.videoHeight = eglCore_->m_animConfig->videoHeight;
+        jsAnimConfig_.orien = eglCore_->m_animConfig->orien;
+        jsAnimConfig_.fps = eglCore_->m_animConfig->fps;
+        jsAnimConfig_.isMix = eglCore_->m_animConfig->isMix;
+        jsAnimConfig_.alphaPointRect = eglCore_->m_animConfig->alphaPointRect;
+        jsAnimConfig_.rgbPointRect = eglCore_->m_animConfig->rgbPointRect;
+        jsAnimConfig_.currentFrame = 0;
+    } else {
+        LOGE("InitJSAnimConfig  eglCore_->m_animConfig nullptr");
+    }
+}
+
+void Player::RenderThread()
+{
+    eglCore_ = std::make_unique<EGLCore>();
+    LOGD("Player: RenderThread eglContext %{public}p %{public}d, %{public}d", sampleInfo_.window,
+        sampleInfo_.width, sampleInfo_.height);
+    if (isSetVideoMode_) {
+        eglCore_->SetVideoMode(defaultVideoMode_);
+    }
+    eglCore_->SetVideoSize(sampleInfo_.videoWidth, sampleInfo_.videoHeight, sampleInfo_.codecMime);
+    eglCore_->SetFitType(fitType_);
+    if (!eglCore_->EglContextInit(sampleInfo_.window, sampleInfo_.width, sampleInfo_.height, sampleInfo_.uri,
+        sampleInfo_.iptData)) {
+        LOGE("Player: Unable to init eglContext");
+    }
+    InitJSAnimConfig();
+    
+    CallBackJS(VapState::START, CallbackType::STATE_CHANGE);
+    
+    while (!isStop_ && isStarted_) {
+        thread_local auto lastPushTime = std::chrono::system_clock::now();
+        if (isVideoEndOfFile_) {
+            LOGE("Decoder render end.");
+            break;
+        }
+        std::unique_lock<std::mutex> lock(renderMutex_);
+        bool condRet = renderCond_.wait_for(
+            lock, 300ms, [this]() { return !renderQueue_.empty(); });
+        if (renderQueue_.empty()) {
+            LOGE("RenderThread no data");
+            continue;
+        }
+        std::vector<uint8_t> buffer = renderQueue_.front();
+        renderQueue_.pop();
+        lock.unlock();
+        
+        if (eglCore_) {
+            renderFrameCurIdx_++;
+            LOGD("renderFrameCurIdx_: %{public}d frameCurIdx_: %{public}d", renderFrameCurIdx_, frameCurIdx_);
+            
+            if (renderFrameCurIdx_ < frameCurIdx_) {
+                continue;
+            }
+            RenderData renderData = {buffer, stride_, sliceHeight_, frameCurIdx_};
+            eglCore_->Render(renderData);
+            CallBackJS(VapState::RENDER, CallbackType::STATE_CHANGE);
+        }
+    }
+    LOGW("RenderThread exit");
+    if (eglCore_ != nullptr) {
+        eglCore_->Release();
+        eglCore_.reset();
+    }
+    StartRelease();
+}
+
+void Player::DecInputThread()
+{
+    while (!isStop_ && isStarted_) {
+        std::unique_lock<std::mutex> lock(signal_->inputMutex);
+        bool condRet = signal_->inputCond.wait_for(
+            lock, 300ms, [this]() { return !isStarted_ || !signal_->inputBufferInfoQueue.empty();});
+        if (!isStarted_) {
+            LOGE("Work done, thread out");
+            break;
+        }
+        if (signal_->inputBufferInfoQueue.empty()) {
+            LOGE("DecInputThread Buffer queue is empty, continue, cond ret: %{public}d", condRet);
+            continue;
+        }
+
+        CodecBufferInfo bufferInfo = signal_->inputBufferInfoQueue.front();
+        signal_->inputBufferInfoQueue.pop();
+        signal_->inputFrameCount++;
+        lock.unlock();
+
+        if (!bufferInfo.buffer) {
+            LOGE("DecInputThread bufferInfo buffer empty, continue");
+            continue;
+        }
+        demuxer_->ReadSample(reinterpret_cast<OH_AVBuffer *>(bufferInfo.buffer), bufferInfo.attr);
+        int32_t ret = videoDecoder_->PushInputData(bufferInfo);
+        if (ret != AV_ERR_OK) {
+            LOGE("Push data failed, thread out");
+            break;
+        }
+        
+        if (bufferInfo.attr.flags & AVCODEC_BUFFER_FLAGS_EOS) {
+            LOGE("Catch EOS, in thread out");
+            break;
+        }
+    }
+    LOGW("DecInputThread exit");
+}
+
+void Player::GetBufferData(CodecBufferInfo bufferInfo)
+{
+    std::vector<uint8_t> buffer;
+    OH_AVFormat *temFormat = OH_VideoDecoder_GetOutputDescription(bufferInfo.codec);
+    OH_AVFormat_GetIntValue(temFormat, OH_MD_KEY_VIDEO_STRIDE, &stride_);
+    OH_AVFormat_GetIntValue(temFormat, OH_MD_KEY_VIDEO_SLICE_HEIGHT, &sliceHeight_);
+    LOGD("GetBufferData %{public}d %{public}d", stride_, sliceHeight_);
+    OH_AVFormat_Destroy(temFormat);
+    if (!bufferInfo.bufferOrigin)
+        return;
+    uint8_t *dataPtr = reinterpret_cast<uint8_t *>(OH_AVBuffer_GetAddr(bufferInfo.bufferOrigin));
+    buffer.assign(dataPtr, dataPtr + bufferInfo.attr.size);
+    std::unique_lock<std::mutex> pauseLock(pauseMutex_);
+    pauseCond_.wait(pauseLock, [this]() { return !isPause_;});
+    pauseLock.unlock();
+    std::unique_lock<std::mutex> lock(renderMutex_);
+    renderQueue_.push(buffer);
+    renderCond_.notify_all();
+}
+
+void Player::DecOutputThread()
+{
+    LOGD("sampleInfo_.frameInterval:  %{public}ld", sampleInfo_.frameInterval);
+    while (!isStop_ && isStarted_) {
+        thread_local auto lastPushTime = std::chrono::system_clock::now();
+        std::unique_lock<std::mutex> lock(signal_->outputMutex);
+        bool condRet = signal_->outputCond.wait_for(
+            lock, 300ms, [this]() { return !isStarted_ || !signal_->outputBufferInfoQueue.empty(); });
+        if (!isStarted_) {
+            LOGE("Decoder output thread done out");
+            break;
+        }
+        if (signal_->outputBufferInfoQueue.empty()) {
+            LOGE("DecOutputThread Buffer queue is empty, continue, cond ret: %{public}d", condRet);
+            continue;
+        }
+
+        CodecBufferInfo bufferInfo = signal_->outputBufferInfoQueue.front();
+        signal_->outputBufferInfoQueue.pop();
+        if (bufferInfo.attr.flags & AVCODEC_BUFFER_FLAGS_EOS) {
+            LOGE("Catch EOS, out thread out");
+            isVideoEndOfFile_ = true;
+            break;
+        }
+        
+        signal_->outputFrameCount++;
+        LOGD("Out buffer count: %{public}d, size: %{public}d, flag: %{public}u, pts: %{public}ld",
+            signal_->outputFrameCount, bufferInfo.attr.size, bufferInfo.attr.flags, bufferInfo.attr.pts);
+        frameCurIdx_ = signal_->outputFrameCount;
+        lock.unlock();
+        GetBufferData(bufferInfo);
+
+        int32_t ret = videoDecoder_->FreeOutputData(bufferInfo.bufferIndex, false);
+        if (ret != AV_ERR_OK) {
+            LOGE("Decoder output thread out free");
+            break;
+        }
+
+        std::this_thread::sleep_until(lastPushTime + std::chrono::microseconds(sampleInfo_.frameInterval));
+        lastPushTime = std::chrono::system_clock::now();
+    }
+    LOGW("DecOutputThread exit, frame count: %{public}u", signal_->outputFrameCount);
+}
+
+void Player::DecAudioInputThread()
+{
+    while (!isStop_ && isStarted_) {
+        std::unique_lock<std::mutex> lock(audioSignal_->audioInputMutex);
+        bool condRet = audioSignal_->audioInputCond.wait_for(
+            lock, 300ms, [this]() { return !isStarted_ || !audioSignal_->audioInputBufferInfoQueue.empty(); });
+        if (!isStarted_) {
+            LOGE("audio Work done, thread out");
+            break;
+        }
+        if (audioSignal_->audioInputBufferInfoQueue.empty()) {
+            LOGE("audio Buffer queue is empty, continue, cond ret: %{public}d", condRet);
+            continue;
+        }
+
+        AudioCodecBufferInfo bufferInfo = audioSignal_->audioInputBufferInfoQueue.front();
+        audioSignal_->audioInputBufferInfoQueue.pop();
+        lock.unlock();
+
+        demuxer_->ReadAudioSample(bufferInfo.bufferOrigin, bufferInfo.attr);
+
+        int32_t ret = audioDecoder_->PushInputData(bufferInfo);
+        if (ret != AV_ERR_OK) {
+            LOGE("audio Push data failed, thread out");
+            break;
+        }
+
+        if (bufferInfo.attr.flags & AVCODEC_BUFFER_FLAGS_EOS) {
+            LOGE("audio Catch EOS, in thread out");
+            break;
+        }
+    }
+    LOGW("DecAudioInputThread exit");
+}
+
+void Player::GetPCMData(AudioCodecBufferInfo bufferInfo)
+{
+    uint8_t *source = reinterpret_cast<uint8_t *>(OH_AVBuffer_GetAddr(bufferInfo.bufferOrigin));
+    for (int i = 0; i < bufferInfo.attr.size; i++) {
+        audioSignal_->renderQueue.push(*(source + i));
+    }
+}
+
+void Player::DecAudioOutputThread()
+{
+    if (audioRenderer_) {
+        OH_AudioRenderer_SetSpeed(audioRenderer_, speed_);
+        OH_AudioRenderer_Start(audioRenderer_);
+    }
+    while (!isStop_ && isStarted_) {
+        if (audioSignal_->isInterrupt) {
+            LOGW("audio render interrupt. play stop");
+            isStop_ = true;
+            break;
+        }
+        std::unique_lock<std::mutex> pauseLock(pauseMutex_);
+        if (isPause_) {
+            OH_AudioRenderer_Pause(audioRenderer_);
+            pauseCond_.wait(pauseLock, [this]() { return !isPause_;});
+            OH_AudioRenderer_Start(audioRenderer_);
+        }
+        pauseLock.unlock();
+        std::unique_lock<std::mutex> lock(audioSignal_->audioOutputMutex);
+        bool condRet = audioSignal_->audioOutputCond.wait_for(
+            lock, 300ms, [this]() { return !isStarted_ || !audioSignal_->audioOutputBufferInfoQueue.empty(); });
+        if (!isStarted_) {
+            break;
+        }
+        if (audioSignal_->audioOutputBufferInfoQueue.empty()) {
+            continue;
+        }
+        AudioCodecBufferInfo bufferInfo = audioSignal_->audioOutputBufferInfoQueue.front();
+        audioSignal_->audioOutputBufferInfoQueue.pop();
+        if (bufferInfo.attr.flags & AVCODEC_BUFFER_FLAGS_EOS) {
+            LOGE("Catch EOS, audio out thread out");
+            break;
+        }
+        GetPCMData(bufferInfo);
+        lock.unlock();
+        int32_t ret = audioDecoder_->FreeOutputData(bufferInfo.bufferIndex, false);
+        if (ret != AV_ERR_OK) {
+            break;
+        }
+        std::unique_lock<std::mutex> lockRender(audioSignal_->renderMutex);
+        audioSignal_->renderCond.wait_for(lockRender, 20ms, [this, bufferInfo]() {
+            return audioSignal_->renderQueue.size() < AUDIO_CACHE * bufferInfo.attr.size;
+        });
+    }
+    OH_AudioRenderer_Stop(audioRenderer_);
+}
+
+void Player::InitAudioPlayer(AudioInitData audioInitData)
+{
+    LOGD("AudioPlayer enter init");
+    OH_AudioStreamBuilder_Create(&builder_, audioInitData.type);
+    OH_AudioStreamBuilder_SetSamplingRate(builder_, audioInitData.samplingRate);
+    OH_AudioStreamBuilder_SetChannelCount(builder_, audioInitData.channelCount);
+    OH_AudioStreamBuilder_SetSampleFormat(builder_, audioInitData.format);
+    OH_AudioStreamBuilder_SetEncodingType(builder_, audioInitData.encodingType);
+    OH_AudioStreamBuilder_SetRendererInfo(builder_, audioInitData.usage);
+
+    OH_AudioRenderer_Callbacks callbacks;
+    callbacks.OH_AudioRenderer_OnWriteData = VAPCallback::OnRenderWriteData;
+    callbacks.OH_AudioRenderer_OnStreamEvent = VAPCallback::OnRenderStreamEvent;
+    callbacks.OH_AudioRenderer_OnInterruptEvent = VAPCallback::OnRenderInterruptEvent;
+    callbacks.OH_AudioRenderer_OnError = VAPCallback::OnRenderError;
+    
+    OH_AudioStreamBuilder_SetRendererCallback(builder_, callbacks, audioSignal_);
+    OH_AudioStreamBuilder_GenerateRenderer(builder_, &audioRenderer_);
+}
+
+void Player::XComponentClick(int32_t eventX, int32_t eventY)
+{
+    LOGD("play get XComponentClick event %{public}d -- %{public}d", eventX, eventY);
+    std::string clickRes;
+    if (eglCore_) {
+        eglCore_->GetCurrentClickTxt(eventX, eventY, clickRes);
+    }
+    if (callbackRefs_.find(CallbackType::CLICK) != callbackRefs_.end()) {
+        CallbackContext *context = new CallbackContext();
+        context->callbackRef = callbackRefs_[CallbackType::CLICK];
+        context->env = env_;
+        napi_value jsCallback = nullptr;
+        napi_get_reference_value(context->env, context->callbackRef, &jsCallback);
+        napi_value resTxt;
+        napi_create_string_utf8(context->env, clickRes.c_str(), clickRes.size(), &resTxt);
+        napi_call_function(context->env, nullptr, jsCallback, 1, &resTxt, nullptr);
+    }
+}
+
+void Player::PauseAndResume()
+{
+    if (!isStarted_) {
+        LOGD("PauseAndResume player is not start");
+        return;
+    }
+    std::lock_guard<std::mutex> lock(pauseMutex_);
+    isPause_ = !isPause_;
+    pauseCond_.notify_all();
+}
+
+void Player::Stop()
+{
+    if (!isStarted_) {
+        LOGD("Stop player is not start");
+        return;
+    }
+    isStop_ = true;
+    loops_ = 1;
+    std::lock_guard<std::mutex> lock(pauseMutex_);
+    if (isPause_) {
+        isPause_ = false;
+        pauseCond_.notify_all();
+    }
+}
+
+void Player::CallBackJS(VapState state, CallbackType type, int32_t err)
+{
+    if ((callbackRefs_.find(type) != callbackRefs_.end()) && callbackAll_ && isContainerDestroy_ == false) {
+        CallbackContext *context = new CallbackContext;
+        context->callbackRef = callbackRefs_[type];
+        context->env = env_;
+        context->vapState = state;
+        context->err = err;
+        jsAnimConfig_.currentFrame = renderFrameCurIdx_;
+        context->jsAnimConfig = jsAnimConfig_;
+        callbackAll_(context);
+    }
+}
+
+void Player::SetCallback(CallbackType type, napi_ref callbackJS, void (*callbackFn)(void *context))
+{
+    if (!callbackAll_ && callbackFn) { // c侧函数为同一个 js侧回收在上层
+        callbackAll_ = callbackFn;
+    }
+    auto it = callbackRefs_.find(type);
+    if (it != callbackRefs_.end()) {
+        napi_ref ref = callbackRefs_.at(type);
+        napi_delete_reference(env_, ref);
+        callbackRefs_.erase(type);
+    }
+    if (type != CallbackType::UNKNOWN) {
+        callbackRefs_.insert(std::make_pair(type, callbackJS));
+    }
+}
+
+void Player::ClearCallback(CallbackType type)
+{
+    auto it = callbackRefs_.find(type);
+    if (it != callbackRefs_.end()) {
+        napi_ref ref = callbackRefs_.at(type);
+        napi_delete_reference(env_, ref);
+        callbackRefs_.erase(it);
+        LOGD("ClearCallback key: %{public}d", type);
+    } else {
+        LOGE("ClearCallback key: %{public}d not find", type);
+    }
+}
+
+void Player::SetVideoMode(VideoMode videoMode)
+{
+    isSetVideoMode_ = true;
+    defaultVideoMode_ = videoMode;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/render/anim_config.cpp b/ohos/vap/vap_module/src/main/cpp/render/anim_config.cpp
new file mode 100644
index 00000000..f852a3e1
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/render/anim_config.cpp
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fstream>
+#include "common_const.h"
+#include "anim_config.h"
+
+using namespace CommonConst;
+
+AnimConfig::~AnimConfig()
+{
+    if (srcMapPtr) {
+        srcMapPtr->srcSMap.clear();
+    }
+    if (frameAllPtr) {
+        frameAllPtr->frameAll.clear();
+    }
+};
+
+void AnimConfig::ParseBoxHead(std::vector<char> &boxHead, BoxHead &head)
+{
+    int32_t length = ZERO;
+    length |= (boxHead[ZERO] & ONE_EIGHT_HEX) << THREE_TIME_EIGHT;
+    length |= (boxHead[ZERO] & ONE_EIGHT_HEX) << TWO_TIME_EIGHT;
+    length |= (boxHead[TWO] & ONE_EIGHT_HEX) << EIGHT;
+    length |= (boxHead[THREE] & ONE_EIGHT_HEX);
+    head.length = length;
+    head.type.assign(&boxHead[FOUR], &boxHead[FOUR] + FOUR);
+}
+
+int AnimConfig::GetJson(std::string &jsonStr, std::string &uri)
+{
+    std::ifstream file(uri, std::ios::binary);
+    int ret = NEGATIVE_ONE;
+    if (!file.is_open()) {
+        LOGE("json Failed to open file");
+        return ret;
+    }
+    std::vector<char> buffer(EIGHT);
+    while (file.read(buffer.data(), EIGHT)) {
+        if (file.eof()) {
+            LOGD("json end of file");
+            break;
+        }
+        BoxHead boxHead;
+        ParseBoxHead(buffer, boxHead);
+
+        if (boxHead.type.compare("vapc") == ZERO) { // memcmp(boxHead.type.data(), "vapc", 4) == 0
+            LOGD("json length: %{public}d", boxHead.length);
+            std::vector<char> cont(boxHead.length);
+            file.read(cont.data(), boxHead.length);
+            jsonStr.assign(cont.begin(), cont.end());
+            ret = 0;
+            break;
+        }
+        if (isH265_) {
+            file.seekg(-FOUR, std::ios::cur);
+        }
+        if (boxHead.type.compare("moov") == 0) {
+            file.seekg(boxHead.length - EIGHT, std::ios::cur);
+        }
+    }
+    file.close();
+    return ret;
+}
+
+bool AnimConfig::ParseJson(std::string uri, bool isNeedParseFrame)
+{
+    LOGD("Enter ParseJson");
+    if (isInit) {
+        LOGD("Json data has been initialized");
+        return true;
+    }
+    std::string strJson;
+    json jsonObj;
+    if (GetJson(strJson, uri) == NEGATIVE_ONE) {
+        LOGE("AnimConfig::String2Json failed");
+        return false;
+    }
+    if (strJson.empty()) {
+        LOGE("AnimConfig not get json");
+        return false;
+    }
+    jsonObj = json::parse(strJson);
+    if (jsonObj.find("info") == jsonObj.end()) {
+        LOGE("jsonObj: not find info");
+        return false;
+    }
+    const auto &info = jsonObj.at("info");
+
+    this->width = info.at("w").get<int>();
+    this->height = info.at("h").get<int>();
+    this->totalFrames = info.at("f").get<int>();
+    this->videoWidth = info.at("videoW").get<int>();
+    this->videoHeight = info.at("videoH").get<int>();
+    this->orien = info.at("orien").get<Orien>();
+    this->fps = info.at("fps").get<int>();
+    this->isMix = info.at("isVapx").get<int>() == ONE;
+    const auto& a = info.at("aFrame");
+    this->alphaPointRect = std::move(PointRect(a.at(ZERO).get<int>(), a.at(ONE).get<int>(),
+        a.at(TWO).get<int>(), a.at(THREE).get<int>()));
+    const auto& c = info.at("rgbFrame");
+    this->rgbPointRect = std::move(PointRect(c.at(ZERO).get<int>(), c.at(ONE).get<int>(),
+        c.at(TWO).get<int>(), c.at(THREE).get<int>()));
+
+    if (jsonObj.find("src") != jsonObj.end()) {
+        srcMapPtr = std::make_shared<SrcMap>(jsonObj);
+    } else {
+        LOGW("json: not find src");
+    }
+
+    if (isNeedParseFrame && jsonObj.find("frame") != jsonObj.end()) {
+        frameAllPtr = std::make_shared<FrameAll>(jsonObj);
+    } else {
+        LOGW("json: not find frame");
+    }
+    
+    isInit = true;
+    LOGD("end ParseJson");
+    return true;
+}
+
+void AnimConfig::DefaultConfig(int32_t width, int32_t height)
+{
+    this->videoWidth = width;
+    this->videoHeight = height;
+    
+    switch (defaultVideoMode) {
+        case VIDEO_MODE_SPLIT_VERTICAL:
+            this->width = width;
+            this->height = height / TWO;
+            this->alphaPointRect   = {ZERO, ZERO, this->width, this->height};
+            this->rgbPointRect = {ZERO, this->height, this->width, this->height};
+            break;
+        case VIDEO_MODE_SPLIT_HORIZONTAL_REVERSE:
+            this->width = width / TWO;
+            this->height = height;
+            this->rgbPointRect = {ZERO, ZERO, this->width, this->height};
+            this->alphaPointRect = {this->width, ZERO, this->width, this->height};
+            break;
+        case VIDEO_MODE_SPLIT_VERTICAL_REVERSE:
+            this->width = width;
+            this->height = height / TWO;
+            this->rgbPointRect = {ZERO, ZERO, this->width, this->height};
+            this->alphaPointRect = {ZERO, this->height, this->width, this->height};
+            break;
+        default:
+            this->width = width / TWO;
+            this->height = height;
+            this->alphaPointRect   = {ZERO, ZERO, this->width, this->height};
+            this->rgbPointRect = {this->width, ZERO, this->width, this->height};
+            break;
+    }
+}
+
+
+void AnimConfig::GetSrc(std::map<std::string, Src> &src)
+{
+    if (!srcMapPtr) {
+        LOGW("this file not have src prop");
+    } else {
+        src = srcMapPtr->srcSMap;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/render/egl_core.cpp b/ohos/vap/vap_module/src/main/cpp/render/egl_core.cpp
new file mode 100644
index 00000000..dc259c78
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/render/egl_core.cpp
@@ -0,0 +1,430 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "egl_core.h"
+
+#include <cstddef>
+#include <cstdint>
+#include <memory>
+#include <misc/fastrpc.h>
+#include <cstdio>
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <EGL/eglplatform.h>
+#include <GLES3/gl3.h>
+#include <hilog/log.h>
+#include <fstream>
+#include <vector>
+
+#include "mask_config.h"
+#include "mask_render.h"
+#include "common_const.h"
+
+using namespace CommonConst;
+
+const float FIFTY_PERCENT = 0.5;
+
+void EGLCore::FitCenter()
+{
+    int32_t width = m_animConfig->width, height = m_animConfig->height;
+
+    if (height <= 0 || width <= 0|| m_height <= 0) {
+        LOGD("param is zero. height: %{public}d m_height: %{public}d ", height, m_height);
+        return;
+    }
+    // 计算图像和目标区域的宽高比
+    double ratioImage = 1.0 * width / height;
+    double ratioTarget = 1.0 * m_width / m_height;
+
+    // 选择缩放因子
+    double scale;
+    if (ratioImage > ratioTarget) {
+        scale = 1.0 * m_width / width;
+    } else {
+        scale = 1.0 * m_height / height;
+    }
+
+    // 计算缩放后的图像尺寸
+    int32_t newWidth = width * scale;
+    int32_t newHeight = height * scale;
+
+    // 计算图像在目标区域中的位置
+    int32_t leftMargin = (m_width - newWidth) / TWO;
+    int32_t topMargin = (m_height - newHeight) / TWO;
+
+    m_viewportWidth = newWidth;
+    m_viewportHeight = newHeight;
+    m_viewportX = leftMargin;
+    m_viewportY = topMargin;
+}
+
+void EGLCore::CenterCrop()
+{
+    int32_t width = m_animConfig->width,
+            height = m_animConfig->height;
+
+    if (height <= 0 || width <= 0|| m_height <= 0) {
+        LOGD("param is zero. height: %{public}d m_height: %{public}d ", height, m_height);
+        return;
+    }
+    // 计算图像和目标区域的宽高比
+    double ratioImage = 1.0 * width / height;
+    double ratioTarget = 1.0 * m_width / m_height;
+    
+    // 计算缩放后的图像尺寸
+    int32_t newWidth;
+    int32_t newHeight;
+
+    if (ratioImage < ratioTarget) {
+        newWidth = m_width;
+        newHeight = 1.0 * m_width / ratioImage;
+    } else {
+        newHeight = m_height;
+        newWidth = 1.0 * ratioImage * m_height;
+    }
+
+    // 计算裁剪区域的偏移
+    int32_t leftMargin = (newWidth - m_width) / TWO;
+    int32_t topMargin = (newHeight - m_height) / TWO;
+
+    m_viewportWidth = newWidth;
+    m_viewportHeight = newHeight;
+    m_viewportX = -leftMargin;
+    m_viewportY = -topMargin;
+}
+
+void EGLCore::FitXY()
+{
+    m_viewportWidth = m_width;
+    m_viewportHeight = m_height;
+    m_viewportX = 0;
+    m_viewportY = 0;
+}
+
+void EGLCore::InitFitConfig()
+{
+    if (m_fitType == VideoFitType::FIT_CENTER) {
+        FitCenter();
+    } else if (m_fitType == VideoFitType::CENTER_CROP) {
+        CenterCrop();
+    } else {
+        FitXY();
+    }
+    
+    LOGD("InitFitConfig %{public}d viewport %{public}d %{public}d %{public}d %{public}d", m_fitType,
+        m_viewportWidth, m_viewportHeight, m_viewportX, m_viewportY);
+}
+
+bool EGLCore::EglContextInit(EGLNativeWindowType window, int width, int height, std::string uri,
+    std::map<std::string, MixInputData> &iptData)
+{
+    LOGD("EglContextInit execute");
+    if ((nullptr == window) || (ZERO >= width) || (ZERO >= height)) {
+        LOGE("EglContextInit: param error");
+        return false;
+    }
+
+    m_width = width;
+    m_height = height;
+    
+    m_animConfig = std::make_shared<AnimConfig>();
+    m_animConfig->defaultVideoMode = m_defaultVideoMode;
+    if (m_animConfig->isDefaultConfig || m_animConfig->ParseJson(uri) == false) {
+        m_animConfig->DefaultConfig(m_videoWidth, m_videoHeight);
+    }
+    InitFitConfig();
+    
+    if (0 < m_width) {
+        m_widthPercent = FIFTY_PERCENT * m_height / m_width;
+    }
+    m_eglWindow = window;
+
+    // Init display.
+    m_eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    if (EGL_NO_DISPLAY == m_eglDisplay) {
+        LOGE("eglGetDisplay: unable to get EGL display");
+        return false;
+    }
+
+    EGLint majorVersion;
+    EGLint minorVersion;
+    if (!eglInitialize(m_eglDisplay, &majorVersion, &minorVersion)) {
+        LOGE("eglInitialize: unable to get initialize EGL display");
+        return false;
+    }
+
+    // Select configuration.
+    m_eglConfig = ChooseConfig();
+    if (m_eglConfig == nullptr) {
+        LOGE("GLContextInit config ERROR");
+        return false;
+    }
+    auto ret = CreateEnvironment();
+    
+    m_render = std::make_unique<class YuvRender>(uri);
+    m_render->SetAnimConfig(m_animConfig);
+    
+    if (m_animConfig->srcMapPtr) {
+        m_mixRender = std::make_unique<class MixRender>(iptData);
+        m_mixRender->SetAnimConfig(m_animConfig);
+    }
+    return ret;
+}
+
+static bool calClick(int32_t x, int32_t y, PointRect frame)
+{
+    return x >= frame.x && x <= (frame.x + frame.w)
+        && y >= frame.y && y <= (frame.y + frame.h);
+}
+
+void EGLCore::GetCurrentClickTxt(int32_t eventX, int32_t eventY, std::string &clickRes)
+{
+    if (!m_mixRender || !m_mixRender->haveSrc) {
+        LOGE("no src,  not have mix render");
+        return;
+    }
+    int32_t viewWith = m_width;
+    int32_t viewHeight = m_height;
+    int32_t videoWith = m_animConfig->width;
+    int32_t videoHeight = m_animConfig->height;
+
+    if (viewWith == 0 || viewHeight == 0)
+        return;
+    
+    int32_t x = eventX * videoWith / viewWith;
+    int32_t y = eventY * videoHeight / viewHeight;
+    
+    auto frameIt = m_animConfig->frameAllPtr->frameAll.find(m_frameCurIdx);
+    if (frameIt == m_animConfig->frameAllPtr->frameAll.end()) {
+        LOGE("not find frame");
+        return;
+    }
+    size_t perFrameSize = frameIt->second.frames.size();
+    for (int i = 0; i < perFrameSize; i++) {
+        Frame frame = frameIt->second.frames.at(i);
+        std::string srcId = frame.srcId;
+        auto it = m_animConfig->srcMapPtr->srcSMap.find(srcId);
+        if (it != m_animConfig->srcMapPtr->srcSMap.end()) {
+            // 找到了指定key的元素
+            bool cal = calClick(x, y, frame.frame);
+            Src src = it->second;
+            if (cal) {
+                clickRes = src.txt;
+                break;
+            }
+            LOGD("cal click :%{public}d * %{public}d  cal :%{public}d txt: %{public}s", x, y, cal, src.txt.c_str());
+        }
+    }
+}
+
+EGLConfig EGLCore::ChooseConfig()
+{
+    std::vector<int> attribList;
+    GetAttributes(attribList);
+    EGLConfig configs = nullptr;
+    int configsNum;
+
+    if (!eglChooseConfig(m_eglDisplay, attribList.data(), &configs, 1, &configsNum)) {
+        LOGE("eglChooseConfig: unable to choose configs");
+        return nullptr;
+    }
+    return configs;
+}
+
+void EGLCore::GetAttributes(std::vector<int> &array)
+{
+    array = {
+        EGL_RENDERABLE_TYPE,
+        EGL_OPENGL_ES2_BIT,
+        // 指定渲染api类别
+        EGL_RED_SIZE,
+        8,
+        EGL_GREEN_SIZE,
+        8, EGL_BLUE_SIZE,
+        8,
+        EGL_ALPHA_SIZE,
+        8,
+        EGL_DEPTH_SIZE,
+        0,
+        EGL_STENCIL_SIZE,
+        0,
+        EGL_NONE
+    };
+}
+
+EGLContext EGLCore::CreateContext(EGLDisplay eglDisplay, EGLConfig eglConfig)
+{
+    std::vector<EGLint> attrs = {EGL_CONTEXT_CLIENT_VERSION, TWO, EGL_NONE};
+    EGLContext eglContext = eglCreateContext(eglDisplay, eglConfig, EGL_NO_CONTEXT, attrs.data());
+    return eglContext;
+}
+
+bool EGLCore::CreateEnvironment()
+{
+    // Create surface.
+    if (nullptr == m_eglWindow) {
+        LOGE("m_eglWindow is null");
+        return false;
+    }
+    
+    if (m_eglDisplay == EGL_NO_DISPLAY || m_eglConfig == nullptr) {
+        return false;
+    }
+    
+    m_eglSurface = eglCreateWindowSurface(m_eglDisplay, m_eglConfig, m_eglWindow, NULL);
+    if (nullptr == m_eglSurface) {
+        LOGE("eglCreateWindowSurface: unable to create surface");
+        return false;
+    }
+
+    // Create context.
+    m_eglContext = CreateContext(m_eglDisplay, m_eglConfig);
+    if (!eglMakeCurrent(m_eglDisplay, m_eglSurface, m_eglSurface, m_eglContext)) {
+        LOGE("eglMakeCurrent failed");
+        return false;
+    }
+    
+    return true;
+}
+
+void EGLCore::MixRenderFrame(int32_t frameCurIdx)
+{
+    if (!m_mixRender || !m_mixRender->haveSrc) {
+        LOGE("no src, not have mix render");
+        return;
+    }
+    MixConfigSize config = {
+        m_animConfig->width,
+        m_animConfig->height,
+        m_animConfig->videoWidth,
+        m_animConfig->videoHeight
+    };
+    
+    auto frameIt = m_animConfig->frameAllPtr->frameAll.find(frameCurIdx);
+    if (frameIt == m_animConfig->frameAllPtr->frameAll.end()) {
+        LOGE("not find frame");
+        return;
+    }
+    size_t perFrameSize = frameIt->second.frames.size();
+    for (int i = 0; i < perFrameSize; i++) {
+        Frame frame = frameIt->second.frames.at(i);
+        std::string srcId = frame.srcId;
+        auto it = m_animConfig->srcMapPtr->srcSMap.find(srcId);
+        if (it != m_animConfig->srcMapPtr->srcSMap.end()) {
+            // 找到了指定key的元素
+            Src src = it->second;
+            m_mixRender->SetVideoTextureId(m_render->GetExternalTexture());
+            m_mixRender->RenderFrame(config, frame, src);
+        } else {
+            // 没有找到指定key的元素
+            LOGE("not find key :%{public}s", srcId.c_str());
+        }
+    }
+}
+
+void EGLCore::Render(RenderData &renderData)
+{
+    if (renderData.data.empty()) {
+        LOGE("Yuv data is empty, unable to render YUV");
+        return;
+    }
+    if (!SeparateYUV(renderData.data, renderData.stride, renderData.sliceHeight, m_animConfig->videoWidth,
+        m_animConfig->videoHeight)) {
+        LOGE("unable to readYuvFile");
+    }
+    glViewport(m_viewportX, m_viewportY, m_viewportWidth, m_viewportHeight);
+    m_render->RenderFrame();
+    m_frameCurIdx = renderData.frameCurIdx;
+    if (m_mixRender && m_mixRender->haveSrc) {
+        MixRenderFrame(renderData.frameCurIdx);
+    }
+
+    FinishLoad();
+}
+
+template <typename T>
+void addVecData(std::vector<unsigned char> &data, T &&value)
+{
+    data.emplace_back(std::forward<T>(value));
+}
+
+bool EGLCore::SeparateYUV(const std::vector<uint8_t> &dataVec,
+    int alignWidth, int alignHeight, int videoWidth, int videoHeight)
+{
+    std::vector<unsigned char> data_y;
+    std::vector<unsigned char> data_u;
+    std::vector<unsigned char> data_v;
+    data_y.reserve(videoWidth * videoHeight);
+    data_u.reserve(videoWidth * videoHeight / FOUR);
+    data_v.reserve(videoWidth * videoHeight / FOUR);
+    
+    const uint8_t *data = dataVec.data();
+
+    for (int j = 0; j < alignHeight; j++) {
+        if (alignHeight != videoHeight && j >= videoHeight)
+            break;
+        std::vector<unsigned char> oneLine;
+        oneLine.assign(data + alignWidth * j, data + alignWidth * j + videoWidth);
+        data_y.insert(data_y.end(), oneLine.begin(), oneLine.end());
+    }
+    for (int j = 0; j < videoHeight / TWO; j++) {
+        std::vector<uint8_t> oneLine;
+        oneLine.assign(data + alignWidth * alignHeight + alignWidth * j,
+            data + alignWidth * alignHeight + alignWidth * j + videoWidth);
+        if ((oneLine.size() % TWO) != 0) {
+            LOGE("error uv data");
+            break;
+        }
+        for (int k = 0; k < oneLine.size(); k += TWO) {
+            addVecData(data_u, std::move(oneLine[k]));
+            addVecData(data_v, std::move(oneLine[k + 1]));
+        }
+    }
+    m_render->SetYUVData(m_animConfig->videoWidth,
+        m_animConfig->videoHeight, data_y, data_u, data_v);
+    return true;
+}
+
+bool EGLCore::FinishLoad()
+{
+    glFlush();
+    glFinish();
+    // 窗口显示，交换双缓冲区
+    bool swap = eglSwapBuffers(m_eglDisplay, m_eglSurface);
+    m_flag = true;
+    return swap;
+}
+
+void EGLCore::Release()
+{
+    m_render->ClearFrame();
+    FinishLoad();
+    m_render->ReleaseTexture();
+    if ((nullptr == m_eglDisplay) || (nullptr == m_eglSurface) || (!eglDestroySurface(m_eglDisplay, m_eglSurface))) {
+        LOGE("Release eglDestroySurface failed");
+    }
+
+    if ((nullptr == m_eglDisplay) || (nullptr == m_eglContext) || (!eglDestroyContext(m_eglDisplay, m_eglContext))) {
+        LOGE("Release eglDestroyContext failed");
+    }
+
+    if ((nullptr == m_eglDisplay) || !eglMakeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT)) {
+        LOGE("eglMakeCurrent failed");
+    }
+
+    if ((nullptr == m_eglDisplay) || (!eglTerminate(m_eglDisplay))) {
+        LOGE("Release eglTerminate failed");
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/render/plugin_render.cpp b/ohos/vap/vap_module/src/main/cpp/render/plugin_render.cpp
new file mode 100644
index 00000000..e84b9307
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/render/plugin_render.cpp
@@ -0,0 +1,937 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "plugin_render.h"
+
+#include <multimedia/image_framework/image/image_source_native.h>
+#include <multimedia/image_framework/image_pixel_map_mdk.h>
+#include <cstdint>
+#include <string>
+#include <js_native_api.h>
+#include <js_native_api_types.h>
+#include <log.h>
+#include <uv.h>
+#include <optional>
+
+#include "napi/n_func_arg.h"
+
+std::unordered_map<std::string, std::shared_ptr<PluginRender>> PluginRender::m_instance;
+OH_NativeXComponent_Callback PluginRender::m_callback;
+
+static void OnSurfaceCreatedCB(OH_NativeXComponent *component, void *window)
+{
+    LOGD("OnSurfaceCreatedCB");
+    if ((nullptr == component) || (nullptr == window)) {
+        LOGE("OnSurfaceCreatedCB: component or window is null");
+        return;
+    }
+
+    char idStr[OH_XCOMPONENT_ID_LEN_MAX + ONE] = { '\0' };
+    uint64_t idSize = OH_XCOMPONENT_ID_LEN_MAX + ONE;
+    if (OH_NATIVEXCOMPONENT_RESULT_SUCCESS != OH_NativeXComponent_GetXComponentId(component, idStr, &idSize)) {
+        LOGE("OnSurfaceCreatedCB: Unable to get XComponent id");
+        return;
+    }
+    std::string id(idStr);
+    auto render = PluginRender::GetInstance(id);
+    uint64_t width;
+    uint64_t height;
+    int32_t xSize = OH_NativeXComponent_GetXComponentSize(component, window, &width, &height);
+    if ((OH_NATIVEXCOMPONENT_RESULT_SUCCESS == xSize) && (nullptr != render)) {
+        render->m_window = window;
+        render->m_component = component;
+        render->m_width = width;
+        render->m_height= height;
+        render->player_ = std::make_unique<Player>();
+    }
+}
+
+static void OnSurfaceChangedCB(OH_NativeXComponent *component, void *window)
+{
+    LOGD("OnSurfaceChangedCB");
+    if ((nullptr == component) || (nullptr == window)) {
+        LOGE("OnSurfaceChangedCB: component or window is null");
+        return;
+    }
+
+    char idStr[OH_XCOMPONENT_ID_LEN_MAX + ONE] = { '\0' };
+    uint64_t idSize = OH_XCOMPONENT_ID_LEN_MAX + ONE;
+    if (OH_NATIVEXCOMPONENT_RESULT_SUCCESS != OH_NativeXComponent_GetXComponentId(component, idStr, &idSize)) {
+        LOGE("OnSurfaceChangedCB: Unable to get XComponent id");
+        return;
+    }
+
+    std::string id(idStr);
+    auto render = PluginRender::GetInstance(id);
+    if (nullptr != render) {
+        uint64_t width = 0;
+        uint64_t height = 0;
+        OH_NativeXComponent_GetXComponentSize(render->m_component, render->m_window, &width, &height);
+        if (render->player_->eglCore_) {
+            render->player_->eglCore_->UpdateSize(width, height);
+        }
+    }
+}
+
+static void OnSurfaceDestroyedCB(OH_NativeXComponent *component, void *window)
+{
+    LOGD("OnSurfaceDestroyedCB");
+    if ((nullptr == component) || (nullptr == window)) {
+        LOGE("OnSurfaceDestroyedCB: component or window is null");
+        return;
+    }
+
+    char idStr[OH_XCOMPONENT_ID_LEN_MAX + ONE] = { '\0' };
+    uint64_t idSize = OH_XCOMPONENT_ID_LEN_MAX + ONE;
+    if (OH_NATIVEXCOMPONENT_RESULT_SUCCESS != OH_NativeXComponent_GetXComponentId(component, idStr, &idSize)) {
+        LOGE("OnSurfaceDestroyedCB: Unable to get XComponent id");
+        return;
+    }
+
+    std::string id(idStr);
+    auto render = PluginRender::GetInstance(id);
+    if (nullptr != render) {
+        render->player_->NoticeDestroyed();
+    }
+    PluginRender::Release(id);
+    render->deleteRenderCallback_(id);
+    PluginRender::m_instance.erase(id);
+}
+
+static void DispatchTouchEventCB(OH_NativeXComponent *component, void *window)
+{
+    LOGD("DispatchTouchEventCB");
+    if ((nullptr == component) || (nullptr == window)) {
+        LOGE("DispatchTouchEventCB: component or window is null");
+        return;
+    }
+
+    char idStr[OH_XCOMPONENT_ID_LEN_MAX + ONE] = { '\0' };
+    uint64_t idSize = OH_XCOMPONENT_ID_LEN_MAX + ONE;
+    if (OH_NATIVEXCOMPONENT_RESULT_SUCCESS != OH_NativeXComponent_GetXComponentId(component, idStr, &idSize)) {
+        LOGE("DispatchTouchEventCB: Unable to get XComponent id");
+        return;
+    }
+    
+    std::string id(idStr);
+    auto render = PluginRender::GetInstance(id);
+    if (nullptr != render) {
+        LOGD("surface touch");
+        OH_NativeXComponent_TouchEvent touchEvent;
+        int32_t ret = OH_NativeXComponent_GetTouchEvent(component, window, &touchEvent);
+        if (ret == OH_NATIVEXCOMPONENT_RESULT_SUCCESS) {
+            LOGI("Touch Info : x = %{public}f, y = %{public}f screenx = %{public}f, screeny = %{public}f",
+                 touchEvent.x, touchEvent.y, touchEvent.screenX, touchEvent.screenY);
+            for (uint32_t i = 0; i < touchEvent.numPoints; i++) {
+                LOGI("Touch Info : dots[%{public}d] id %{public}d x = %{public}f, y = %{public}f", i,
+                     touchEvent.touchPoints[i].id, touchEvent.touchPoints[i].x, touchEvent.touchPoints[i].y);
+                LOGI("Touch Info : screenx = %{public}f, screeny = %{public}f",
+                     touchEvent.touchPoints[i].screenX, touchEvent.touchPoints[i].screenY);
+                OH_NativeXComponent_TouchPointToolType toolType;
+                float tiltX = 0.0;
+                float tiltY = 0.0;
+                int32_t ret = OH_NativeXComponent_GetTouchPointToolType(component, i, &toolType);
+                ret = OH_NativeXComponent_GetTouchPointTiltX(component, i, &tiltX);
+                ret = OH_NativeXComponent_GetTouchPointTiltY(component, i, &tiltY);
+                LOGI("Touch Info : [%{public}d] %{public}u, %{public}f, %{public}f",
+                     i, toolType, tiltX, tiltY);
+            }
+            render->player_->XComponentClick(touchEvent.x, touchEvent.y);
+        } else {
+            LOGE("Touch fail");
+        }
+    }
+}
+
+PluginRender::PluginRender(std::string &id)
+{
+    this->m_id = id;
+    OH_NativeXComponent_Callback *renderCallback = &PluginRender::m_callback;
+    renderCallback->OnSurfaceCreated = OnSurfaceCreatedCB;
+    renderCallback->OnSurfaceChanged = OnSurfaceChangedCB;
+    renderCallback->OnSurfaceDestroyed = OnSurfaceDestroyedCB;
+    renderCallback->DispatchTouchEvent = DispatchTouchEventCB;
+}
+
+std::shared_ptr<PluginRender> PluginRender::GetInstance(std::string &id, bool onlyFind)
+{
+    if (onlyFind) {
+        return m_instance.find(id) == m_instance.end() ? nullptr : m_instance[id];
+    }
+
+    if (m_instance.find(id) == m_instance.end()) {
+        std::shared_ptr<PluginRender> instance = std::make_shared<PluginRender>(id);
+        m_instance[id] = instance;
+        return instance;
+    } else {
+        return m_instance[id];
+    }
+}
+
+std::string PluginRender::GetXComponentId(napi_env env, napi_callback_info info)
+{
+    napi_value thisArg = nullptr;
+    napi_value exportInstance = nullptr;
+    OH_NativeXComponent *nativeXComponent = nullptr;
+    std::string id = "";
+
+    napi_get_cb_info(env, info, NULL, NULL, &thisArg, NULL);
+    bool isExit = false;
+    napi_has_named_property(env, thisArg, OH_NATIVE_XCOMPONENT_OBJ, &isExit);
+    if (!isExit || (napi_ok != napi_get_named_property(env, thisArg, OH_NATIVE_XCOMPONENT_OBJ, &exportInstance))) {
+        LOGE("Play: napi_get_named_property fail");
+        return id;
+    }
+    
+    if (exportInstance == nullptr) {
+        LOGE("Play: napi_get_named_property fail");
+        return id;
+    }
+    
+    if (napi_ok != napi_unwrap(env, exportInstance, reinterpret_cast<void **>(&nativeXComponent))) {
+        LOGE("Play: napi_unwrap fail");
+        return id;
+    }
+    
+    if (nativeXComponent == nullptr) {
+        return id;
+    }
+
+    char idStr[OH_XCOMPONENT_ID_LEN_MAX + ONE] = { '\0' };
+    uint64_t idSize = OH_XCOMPONENT_ID_LEN_MAX + ONE;
+    if (OH_NATIVEXCOMPONENT_RESULT_SUCCESS != OH_NativeXComponent_GetXComponentId(nativeXComponent, idStr, &idSize)) {
+        LOGE("Play: Unable to get XComponent id");
+        return id;
+    }
+    id = idStr;
+    return id;
+}
+
+napi_value PluginRender::Pause(napi_env env, napi_callback_info info)
+{
+    LOGD("enter pause");
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ZERO, NARG_CNT::ONE)) {
+        return nullptr;
+    }
+    napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+    NVal nVal(env, v1);
+    auto [succ, resData, length] = nVal.ToUTF8String();
+    std::string id = resData.get();
+
+    LOGD("Pause render id:%{public}s", id.c_str());
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (render) {
+        render->player_->PauseAndResume();
+    }
+    return nullptr;
+    LOGD("end pause");
+}
+
+napi_value PluginRender::Stop(napi_env env, napi_callback_info info)
+{
+    LOGD("enter Stop");
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ZERO, NARG_CNT::ONE)) {
+        return nullptr;
+    }
+    napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+    NVal nVal(env, v1);
+    auto [succ, resData, length] = nVal.ToUTF8String();
+    std::string id = resData.get();
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (render && render->player_) {
+        render->player_->Stop();
+    }
+    LOGD("end Stop");
+    return nullptr;
+}
+
+napi_value PluginRender::SetLoop(napi_env env, napi_callback_info info)
+{
+    LOGD("enter SetLoop");
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        return nullptr;
+    }
+    napi_value v1 = funcArg.GetArg(NARG_POS::SECOND);
+    NVal nVal(env, v1);
+    auto [succ, resData, length] = nVal.ToUTF8String();
+    std::string id = resData.get();
+    
+    LOGD("SetLoop render id:%{public}s", id.c_str());
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (render) {
+        napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+        NVal nVal(env, v1);
+        auto [succ, resData] = nVal.ToInt32();
+        LOGD("SetLoop loop: %{public}d", resData);
+        if (succ) {
+            render->player_->SetLoop(resData);
+        } else {
+            LOGE("SetLoop cont get val");
+        }
+    }
+    LOGD("end SetLoop");
+    return nullptr;
+}
+
+static void GenSrcInfo(napi_env env, std::map<std::string, Src> &src, napi_value &srcInfos)
+{
+    size_t i = 0;
+    for (auto ele: src) {
+        auto srcInfo = NVal::CreateObject(env);
+        auto srcId = NVal::CreateInt64(env, atoi(ele.first.c_str()));
+        auto tag = NVal::CreateUTF8String(env, ele.second.srcTag);
+        auto type = NVal::CreateInt64(env, static_cast<int>(ele.second.srcType));
+        srcInfo.AddProp("srcId", srcId.val_);
+        srcInfo.AddProp("tag", tag.val_);
+        srcInfo.AddProp("type", type.val_);
+        napi_status status = napi_set_element(env, srcInfos, i, srcInfo.val_);
+        if (status != napi_ok) {
+            LOGE("Failed to create srcInfos with napi wrapper object.");
+        }
+        i++;
+    }
+}
+
+napi_value PluginRender::GetVideoInfo(napi_env env, napi_callback_info info)
+{
+    LOGD("enter GetVideoInfo");
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        return nullptr;
+    }
+    napi_value jsId = funcArg.GetArg(NARG_POS::SECOND);
+    NVal jsIdVal(env, jsId);
+    auto [jsIdSucc, jsIdResData, jsIdLength] = jsIdVal.ToUTF8String();
+    std::string id = jsIdResData.get();
+
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (!render) {
+        LOGE("get env error");
+        return nullptr;
+    }
+
+    napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+    NVal nVal(env, v1);
+    auto [succ, resStr, length] = nVal.ToUTF8String();
+    if (!succ) {
+        LOGE("arg type error.");
+        return nullptr;
+    }
+    AnimConfig animConfig;
+    animConfig.ParseJson(resStr.get(), false);
+    
+    std::map<std::string, Src> src;
+    animConfig.GetSrc(src);
+    napi_value srcInfos = nullptr;
+    
+    if (!src.empty()) {
+        napi_status status = napi_create_array(env, &srcInfos);
+        if (status == napi_ok) {
+            GenSrcInfo(env, src, srcInfos);
+        }
+    }
+    
+    auto videoInfo = NVal::CreateObject(env);
+    auto width = NVal::CreateInt64(env, animConfig.width);
+    auto height = NVal::CreateInt64(env, animConfig.height);
+    videoInfo.AddProp("width", width.val_);
+    videoInfo.AddProp("height", height.val_);
+    videoInfo.AddProp("srcInfos", srcInfos);
+    return videoInfo.val_;
+}
+
+napi_value PluginRender::SetFitType(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        return nullptr;
+    }
+    napi_value jsId = funcArg.GetArg(NARG_POS::SECOND);
+    NVal jsIdVal(env, jsId);
+    auto [jsIdSucc, jsIdResData, jsIdLength] = jsIdVal.ToUTF8String();
+    std::string id = jsIdResData.get();
+    
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (!render) {
+        LOGE("Not get render");
+        return nullptr;
+    }
+    
+    napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+    NVal nVal(env, v1);
+    auto [succ, res] = nVal.ToInt32();
+    if (!succ) {
+        LOGE("cont first int arg error");
+        return nullptr;
+    }
+    VideoFitType fitType = VideoFitType::FIT_XY;
+    if (res == static_cast<int>(VideoFitType::FIT_XY) ||
+       res == static_cast<int>(VideoFitType::FIT_CENTER) ||
+       res == static_cast<int>(VideoFitType::CENTER_CROP)) {
+        fitType = static_cast<VideoFitType>(res);
+    } else {
+        LOGE("invalid fitType %{public}d", res);
+        return nullptr;
+    }
+    LOGD("SetFitType %{public}d %{public}d ", static_cast<int32_t>(fitType), res);
+    render->player_->SetFitType(fitType);
+    return nullptr;
+}
+
+napi_value PluginRender::SetVideoMode(napi_env env, napi_callback_info info)
+{
+    LOGD("enter SetVideoMode");
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        return nullptr;
+    }
+    napi_value jsId = funcArg.GetArg(NARG_POS::SECOND);
+    NVal jsIdVal(env, jsId);
+    auto [jsIdSucc, jsIdResData, jsIdLength] = jsIdVal.ToUTF8String();
+    std::string id = jsIdResData.get();
+
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (!render) {
+        LOGE("Not get render");
+        return nullptr;
+    }
+    napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+    NVal nVal(env, v1);
+    auto [succ, res] = nVal.ToInt32();
+    if (!succ) {
+        LOGE("cont first int arg error");
+        return nullptr;
+    }
+    VideoMode videoMode = VIDEO_MODE_SPLIT_HORIZONTAL;
+    if (res == static_cast<int>(VideoMode::VIDEO_MODE_SPLIT_HORIZONTAL) ||
+       res == static_cast<int>(VideoMode::VIDEO_MODE_SPLIT_VERTICAL) ||
+       res == static_cast<int>(VideoMode::VIDEO_MODE_SPLIT_HORIZONTAL_REVERSE) ||
+       res == static_cast<int>(VideoMode::VIDEO_MODE_SPLIT_VERTICAL_REVERSE)) {
+        videoMode = static_cast<VideoMode>(res);
+    } else {
+        LOGE("invalid fitType %{public}d", res);
+        return nullptr;
+    }
+    LOGD("SetVideoMode %{public}d %{public}d ", static_cast<int32_t>(videoMode), res);
+    render->player_->SetVideoMode(videoMode);
+    return nullptr;
+}
+
+napi_value PluginRender::SetSpeed(napi_env env, napi_callback_info info)
+{
+    LOGD("enter SetSpeed");
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        return nullptr;
+    }
+    napi_value jsId = funcArg.GetArg(NARG_POS::SECOND);
+    NVal jsIdVal(env, jsId);
+    auto [jsIdSucc, jsIdResData, jsIdLength] = jsIdVal.ToUTF8String();
+    std::string id = jsIdResData.get();
+
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (!render) {
+        LOGE("Not get render");
+        return nullptr;
+    }
+    napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+    NVal nVal(env, v1);
+    auto [succ, res] = nVal.ToFloat();
+    if (!succ) {
+        LOGE("cont first int arg error");
+        return nullptr;
+    }
+    float speed = std::clamp(res, 0.25f, 4.0f);
+    LOGD("SetSpeed in: %{public}f -- %{public}f", res, speed);
+    render->player_->SetSpeed(speed);
+    return nullptr;
+}
+
+void PluginRender::Export(napi_env env, napi_value exports)
+{
+    if ((nullptr == env) || (nullptr == exports)) {
+        LOGE("Export: env or exports is null");
+        return;
+    }
+    this->env_ = env;
+
+    napi_property_descriptor desc[] = {
+        { "play", nullptr, PluginRender::Play, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "on", nullptr, PluginRender::On, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "off", nullptr, PluginRender::Off, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "pause", nullptr, PluginRender::Pause, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "stop", nullptr, PluginRender::Stop, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "setLoop", nullptr, PluginRender::SetLoop, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "setFitType", nullptr, PluginRender::SetFitType, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "setVideoMode", nullptr, PluginRender::SetVideoMode, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "getVideoInfo", nullptr, PluginRender::GetVideoInfo, nullptr, nullptr, nullptr, napi_default, nullptr },
+        { "setSpeed", nullptr, PluginRender::SetSpeed, nullptr, nullptr, nullptr, napi_default, nullptr }
+    };
+    if (napi_ok != napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc)) {
+        LOGE("Export: napi_define_properties failed");
+    }
+}
+
+static std::optional<OH_Drawing_TextAlign> intToTextAlign(int value)
+{
+    switch (value) {
+        case static_cast<int>(OH_Drawing_TextAlign::TEXT_ALIGN_CENTER):
+            return OH_Drawing_TextAlign::TEXT_ALIGN_CENTER;
+        case static_cast<int>(OH_Drawing_TextAlign::TEXT_ALIGN_JUSTIFY):
+            return OH_Drawing_TextAlign::TEXT_ALIGN_JUSTIFY;
+        case static_cast<int>(OH_Drawing_TextAlign::TEXT_ALIGN_START):
+            return OH_Drawing_TextAlign::TEXT_ALIGN_START;
+        case static_cast<int>(OH_Drawing_TextAlign::TEXT_ALIGN_END):
+            return OH_Drawing_TextAlign::TEXT_ALIGN_END;
+        case static_cast<int>(OH_Drawing_TextAlign::TEXT_ALIGN_LEFT):
+            return OH_Drawing_TextAlign::TEXT_ALIGN_LEFT;
+        case static_cast<int>(OH_Drawing_TextAlign::TEXT_ALIGN_RIGHT):
+            return OH_Drawing_TextAlign::TEXT_ALIGN_RIGHT;
+        default:
+            return std::nullopt;
+    }
+}
+
+static std::optional<OH_Drawing_FontWeight> intToFontWeight(int value)
+{
+    switch (value) {
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_100):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_100;
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_200):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_200;
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_300):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_300;
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_400):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_400;
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_500):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_500;
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_600):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_600;
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_700):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_700;
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_800):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_800;
+        case static_cast<int>(OH_Drawing_FontWeight::FONT_WEIGHT_900):
+            return OH_Drawing_FontWeight::FONT_WEIGHT_900;
+        default:
+            return std::nullopt;
+    }
+}
+
+static void ParseMixParamTag(NVal &nValOneOpt, std::string &tag)
+{
+    if (nValOneOpt.HasProp(PROP_TAG)) {
+        auto [succ, resData, length] = nValOneOpt.GetProp(PROP_TAG).ToUTF8String();
+        if (succ) {
+            LOGD("parse mix tag %{public}s", resData.get());
+            tag = resData.get();
+        } else {
+            LOGE("parse mix tag not set");
+            return;
+        }
+    }
+}
+
+static void ParseMixParamTxt(NVal &nValOneOpt, MixInputData &mixInputData)
+{
+    if (nValOneOpt.HasProp(PROP_TXT)) {
+        LOGD("parse mix txt");
+        auto [txtSucc, resData, length] = nValOneOpt.GetProp(PROP_TXT).ToUTF8String();
+        if (txtSucc) {
+            mixInputData.txt = resData.get();
+            LOGD("parse mix txt %{public}s", resData.get());
+        }
+    }
+}
+
+static void ParseMixParamImg(NVal &nValOneOpt, MixInputData &mixInputData)
+{
+    if (nValOneOpt.HasProp(PROP_IMAGE)) {
+        LOGD("parse mix img");
+        auto [imgSucc, resData, length] = nValOneOpt.GetProp(PROP_IMAGE).ToUTF8String();
+        if (imgSucc) {
+            mixInputData.imgUri = resData.get();
+        }
+    }
+}
+
+static void ParseMixParamColor(NVal &nValOneOpt, MixInputData &mixInputData)
+{
+    if (nValOneOpt.HasProp(PROP_COLOR)) {
+        auto colorNVal = nValOneOpt.GetProp(PROP_COLOR);
+        if (colorNVal) {
+            auto [succA, a] = colorNVal.GetProp("a").ToUint32();
+            auto [succR, r] = colorNVal.GetProp("r").ToUint32();
+            auto [succG, g] = colorNVal.GetProp("g").ToUint32();
+            auto [succB, b] = colorNVal.GetProp("b").ToUint32();
+            
+            if (succA && succB && succR && succG) {
+                mixInputData.color = {a, r, g, b};
+                mixInputData.isSet |= SET_COLOR;
+                LOGD("parse mix color %{public}x argb: %{public}02x-%{public}02x-%{public}02x-%{public}02x",
+                    mixInputData.isSet, a, r, g, b);
+            }
+        }
+    }
+}
+
+static void ParseMixParamFontWeight(NVal &nValOneOpt, MixInputData &mixInputData)
+{
+    if (nValOneOpt.HasProp(PROP_FONT_WEIGHT)) {
+        auto [succ, resData] = nValOneOpt.GetProp(PROP_FONT_WEIGHT).ToInt32();
+        if (succ) {
+            auto fontWeight = intToFontWeight(resData);
+            if (fontWeight) {
+                mixInputData.fontWeight = fontWeight.value();
+                mixInputData.isSet |= SET_FONT_WEIGHT;
+                LOGD("parse mix fontWeight %{public}x fw: %{public}d", mixInputData.isSet, resData);
+            }
+        }
+    }
+}
+
+static void ParseMixParamTextAlign(NVal &nValOneOpt, MixInputData &mixInputData)
+{
+    if (nValOneOpt.HasProp(PROP_TEXT_ALIGN)) {
+        auto [succ, resData] = nValOneOpt.GetProp(PROP_TEXT_ALIGN).ToInt32();
+        if (succ) {
+            auto textAlign = intToTextAlign(resData);
+            if (textAlign) {
+                mixInputData.textAlign = textAlign.value();
+                mixInputData.isSet |= SET_TEXT_ALIGN;
+                LOGD("parse mix textAlign %{public}x ta: %{public}d", mixInputData.isSet, resData);
+            }
+        }
+    }
+}
+
+static void ParseMixParam(std::map<std::string, MixInputData> &mixData, napi_env env, NFuncArg &funcArg)
+{
+    napi_value v2 = funcArg.GetArg(NARG_POS::SECOND);
+    if (!v2) {
+        LOGE("not get second param");
+        return;
+    }
+    
+    NVal nVal2(env, v2);
+    auto [succ1, isArray] = nVal2.IsArray();
+    if (!succ1 || !isArray) {
+        LOGE("the second param is not array");
+        return;
+    }
+    uint32_t len = ZERO;
+    napi_get_array_length(env, v2, &len);
+    if (len == ZERO) {
+        LOGE("the array is empty");
+        return;
+    }
+    
+    for (uint32_t i = 0; i < len; i++) {
+        napi_value element;
+        napi_get_element(env, v2, i, &element);
+        NVal nValOneOpt(env, element);
+        MixInputData mixInputData;
+        
+        std::string tag;
+        ParseMixParamTag(nValOneOpt, tag);
+        ParseMixParamTxt(nValOneOpt, mixInputData);
+        ParseMixParamImg(nValOneOpt, mixInputData);
+        ParseMixParamColor(nValOneOpt, mixInputData);
+        ParseMixParamFontWeight(nValOneOpt, mixInputData);
+        ParseMixParamTextAlign(nValOneOpt, mixInputData);
+        
+        LOGD("parse mix data tag%{public}s ta: %{public}d fw: %{public}d", tag.c_str(),
+            mixInputData.textAlign, mixInputData.fontWeight);
+        mixData.insert(std::make_pair(tag, mixInputData));
+    }
+}
+
+static void CreateAnimConfig(napi_env env, JSAnimConfig &jsAnimConfig, NVal &animConfig)
+{
+    auto alphaRect = NVal::CreateObject(env);
+    auto x = NVal::CreateInt64(env, jsAnimConfig.alphaPointRect.x);
+    auto y = NVal::CreateInt64(env, jsAnimConfig.alphaPointRect.y);
+    auto w = NVal::CreateInt64(env, jsAnimConfig.alphaPointRect.w);
+    auto h = NVal::CreateInt64(env, jsAnimConfig.alphaPointRect.h);
+    alphaRect.AddProp("x", x.val_);
+    alphaRect.AddProp("y", y.val_);
+    alphaRect.AddProp("w", w.val_);
+    alphaRect.AddProp("h", h.val_);
+    
+    auto rgbRect = NVal::CreateObject(env);
+    auto x1 = NVal::CreateInt64(env, jsAnimConfig.rgbPointRect.x);
+    auto y1 = NVal::CreateInt64(env, jsAnimConfig.rgbPointRect.y);
+    auto w1 = NVal::CreateInt64(env, jsAnimConfig.rgbPointRect.w);
+    auto h1 = NVal::CreateInt64(env, jsAnimConfig.rgbPointRect.h);
+    rgbRect.AddProp("x", x1.val_);
+    rgbRect.AddProp("y", y1.val_);
+    rgbRect.AddProp("w", w1.val_);
+    rgbRect.AddProp("h", h1.val_);
+    
+    auto version = NVal::CreateInt64(env, jsAnimConfig.version);
+    auto totalFrames = NVal::CreateInt64(env, jsAnimConfig.totalFrames);
+    auto width = NVal::CreateInt64(env, jsAnimConfig.width);
+    auto height = NVal::CreateInt64(env, jsAnimConfig.height);
+    auto videoWidth = NVal::CreateInt64(env, jsAnimConfig.videoWidth);
+    auto videoHeight = NVal::CreateInt64(env, jsAnimConfig.videoHeight);
+    auto orien = NVal::CreateInt64(env, jsAnimConfig.orien);
+    auto fps = NVal::CreateInt64(env, jsAnimConfig.fps);
+    auto isMix = NVal::CreateBool(env, jsAnimConfig.isMix);
+    auto currentFrame = NVal::CreateInt64(env, jsAnimConfig.currentFrame);
+    
+    animConfig.AddProp("version", version.val_);
+    animConfig.AddProp("totalFrames", totalFrames.val_);
+    animConfig.AddProp("width", width.val_);
+    animConfig.AddProp("height", height.val_);
+    animConfig.AddProp("videoWidth", videoWidth.val_);
+    animConfig.AddProp("videoHeight", videoHeight.val_);
+    animConfig.AddProp("orien", orien.val_);
+    animConfig.AddProp("fps", fps.val_);
+    animConfig.AddProp("isMix", isMix.val_);
+    animConfig.AddProp("alphaPointRect", alphaRect.val_);
+    animConfig.AddProp("rgbPointRect", rgbRect.val_);
+    animConfig.AddProp("currentFrame", currentFrame.val_);
+}
+
+void Callback(void *asyncContext)
+{
+    LOGD("enter Callback");
+    if (asyncContext == nullptr) {
+        LOGE("Callback asyncContext is nullptr");
+        return;
+    }
+    uv_loop_s *loop = nullptr;
+    CallbackContext *context = (CallbackContext *)asyncContext;
+    napi_status status = napi_get_uv_event_loop(context->env, &loop);
+    if (status != napi_ok) {
+        LOGE("Callback con not napi_get_uv_event_loop %{public}d", status);
+        delete context;
+        return;
+    }
+    uv_work_t *work = new uv_work_t;
+    work->data = context;
+    uv_queue_work(loop, work, [](uv_work_t *work) { LOGD("enter uv_work_t Callback"); },
+        [](uv_work_t *work, int status) {
+            LOGD("enter complete Callback");
+            CallbackContext *context = (CallbackContext *)work->data;
+            napi_handle_scope scope = nullptr;
+            napi_status ret = napi_open_handle_scope(context->env, &scope);
+            napi_value callback = nullptr;
+            ret = napi_get_reference_value(context->env, context->callbackRef, &callback);
+            if (ret != napi_ok) {
+                LOGE("callback napi_get_reference_value error %{public}d", ret);
+            } else if (context && context->vapState == VapState::FAILED) {
+                napi_value ret[2];
+                napi_create_int32(context->env, context->vapState, &ret[0]);
+                napi_create_int32(context->env, context->err, &ret[1]);
+                napi_value res = nullptr;
+                napi_call_function(context->env, nullptr, callback, 2, ret, &res);
+            } else if (context && (context->vapState == VapState::RENDER || context->vapState == VapState::START)) {
+                auto animConfig = NVal::CreateObject(context->env);
+                CreateAnimConfig(context->env, context->jsAnimConfig, animConfig);
+                napi_value ret[2];
+                napi_create_int32(context->env, context->vapState, &ret[0]);
+                ret[1] = animConfig.val_;
+                napi_value res = nullptr;
+                napi_call_function(context->env, nullptr, callback, 2, ret, &res);
+            } else if (context) {
+                napi_value rev = nullptr;
+                napi_create_int32(context->env, context->vapState, &rev);
+                napi_value res = nullptr;
+                napi_call_function(context->env, nullptr, callback, 1, &rev, &res);
+            }
+
+            if (context->vapState == VapState::UNKNOWN) {
+                napi_delete_reference(context->env, context->callbackRef);
+            }
+            napi_close_handle_scope(context->env, scope);
+            delete context;
+            delete work;
+        });
+}
+
+void PluginRender::ParseCallback(napi_ref &callbackRef, napi_env env, napi_value val, std::string type)
+{
+    LOGD("enter ParseCallback %{public}s", type.c_str());
+    if (!val) {
+        LOGE("not get callback param");
+        return;
+    }
+    
+    napi_status createRet = napi_create_reference(env, val, 1, &callbackRef);
+    if (createRet != napi_ok) {
+        LOGE("napi_create_reference error-%{public}d", createRet);
+        return;
+    }
+}
+
+napi_value PluginRender::Play(napi_env env, napi_callback_info info)
+{
+    LOGD("enter Play");
+    std::string id = "";
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::FOUR)) {
+        return nullptr;
+    }
+
+    napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+    NVal nVal(env, v1);
+    auto [succ, resData, length] = nVal.ToUTF8String();
+    std::string str = resData.get();
+    
+    if (funcArg.GetMaxArgc() >= FOUR) {
+        napi_value jsId = funcArg.GetArg(NARG_POS::FOURTH);
+        NVal idVal(env, jsId);
+        auto [succ, resData, length] = idVal.ToUTF8String();
+        id = resData.get();
+    }
+
+    if (id.empty()) {
+        return nullptr;
+    }
+
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (render) {
+        std::string uri = str;
+        if (uri.empty()) {
+            LOGE("Play: uri empty");
+            return nullptr;
+        }
+        VAPInfo info;
+        std::map<std::string, MixInputData> mixData;
+        if (funcArg.GetMaxArgc() >= TWO) {
+            ParseMixParam(mixData, env, funcArg);
+        }
+        if (render->player_ == nullptr) {
+            return nullptr;
+        }
+        if (funcArg.GetMaxArgc() >= THREE) {
+            std::string type = "playDone";
+            napi_value v3 = funcArg.GetArg(NARG_POS::THIRD);
+            napi_ref callbackRef = nullptr;
+            render->ParseCallback(callbackRef, env, v3, type);
+            render->env_ = env;
+            render->player_->SetCallback(CallbackType::PLAY_DONE, callbackRef, &Callback);
+        }
+        info.uri = uri;
+        info.window = static_cast<NativeWindow*>(render->m_window);
+        info.width = render->m_width;
+        info.height = render->m_height;
+        info.iptData = mixData;
+        render->player_->env_ = env;
+        render->player_->Init(info);
+        LOGD("Player Start executed");
+    }
+    return nullptr;
+}
+
+napi_value PluginRender::On(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::TWO, NARG_CNT::THREE)) {
+        return nullptr;
+    }
+
+    napi_value v1 = funcArg.GetArg(NARG_POS::THIRD);
+    NVal nVal(env, v1);
+    auto [succ, resData, length] = nVal.ToUTF8String();
+    std::string id = resData.get();
+
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (render && render->player_) {
+        if (render->player_->IsRunning()) {
+            LOGE("the player is running...plz call this func before play.");
+            return nullptr;
+        }
+        napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+        NVal nVal(env, v1);
+        auto [succ, resData, length] = nVal.ToUTF8String();
+        std::string str = resData.get();
+        LOGD("Get Count of argc %{public}zu str:%{public}s", funcArg.GetMaxArgc(), str.c_str());
+        if (str != "stateChange" && str != "click") {
+            LOGE("not support event");
+            return nullptr;
+        }
+        void (*callback)(void *context) = nullptr;
+        napi_ref callbackRef = nullptr;
+        if (funcArg.GetMaxArgc() >= TWO) {
+            napi_value v2 = funcArg.GetArg(NARG_POS::SECOND);
+            callback = &Callback;
+            render->ParseCallback(callbackRef, env, v2, str);
+            render->env_ = env;
+        }
+        if (callback && callbackRef) {
+            render->player_->env_ = env;
+            if (str == "click") {
+                render->player_->SetCallback(CallbackType::CLICK, callbackRef, callback);
+            } else if (str == "stateChange") {
+                render->player_->SetCallback(CallbackType::STATE_CHANGE, callbackRef, callback);
+            }
+        }
+    }
+    return nullptr;
+}
+
+napi_value PluginRender::Off(napi_env env, napi_callback_info info)
+{
+    NFuncArg funcArg(env, info);
+    if (!funcArg.InitArgs(NARG_CNT::ONE, NARG_CNT::TWO)) {
+        LOGE("func 'off' Init args error.");
+        return nullptr;
+    }
+    napi_value jsId = funcArg.GetArg(NARG_POS::SECOND);
+    NVal nVal(env, jsId);
+    auto [succ, resData, length] = nVal.ToUTF8String();
+    std::string id = resData.get();
+    LOGD("Off listener id:%{public}s", id.c_str());
+    if (id.empty()) {
+        LOGE("GetXComponentId error");
+        return nullptr;
+    }
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (render) {
+        if (render->player_->IsRunning()) {
+            LOGE("the player is running...plz call this func before play.");
+            return nullptr;
+        }
+        napi_value v1 = funcArg.GetArg(NARG_POS::FIRST);
+        NVal nVal(env, v1);
+        auto [succ, resData, length] = nVal.ToUTF8String();
+        std::string str = resData.get();
+        LOGD("Get Count of argc %{public}zu str:%{public}s", funcArg.GetMaxArgc(), str.c_str());
+        CallbackType type = CallbackType::UNKNOWN;
+        if (str == "stateChange") {
+            type = CallbackType::STATE_CHANGE;
+        } else if (str == "click") {
+            type = CallbackType::CLICK;
+        } else {
+            LOGE("not support event");
+            return nullptr;
+        }
+        render->player_->ClearCallback(type);
+    }
+    return nullptr;
+}
+
+void PluginRender::Release(std::string &id)
+{
+    std::shared_ptr<PluginRender> render = PluginRender::GetInstance(id);
+    if (nullptr != render) {
+        render->surfaceDestroyed_ = true;
+    }
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/render/yuv_render.cpp b/ohos/vap/vap_module/src/main/cpp/render/yuv_render.cpp
new file mode 100644
index 00000000..10557ab4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/render/yuv_render.cpp
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "yuv_render.h"
+
+#include <vector>
+
+#include "common_const.h"
+#include "tex_coords_util.h"
+#include "shader_util.h"
+#include "log.h"
+
+using namespace CommonConst;
+
+void YuvRender::InitRender(std::string uri)
+{
+    LOGD("enter YuvRender::InitRender");
+    shaderProgram_ = ShaderUtil::CreateProgram(g_vertexShader, g_fragmentShader);
+    avPosition_ = glGetAttribLocation(shaderProgram_, "v_Position");
+    rgbPosition_ = glGetAttribLocation(shaderProgram_, "vTexCoordinateRgb");
+    alphaPosition_ = glGetAttribLocation(shaderProgram_, "vTexCoordinateAlpha");
+    
+    samplerY_ = glGetUniformLocation(shaderProgram_, "sampler_y");
+    samplerU_ = glGetUniformLocation(shaderProgram_, "sampler_u");
+    samplerV_ = glGetUniformLocation(shaderProgram_, "sampler_v");
+    
+    convertMatrixUniform_ = glGetUniformLocation(shaderProgram_, "convertMatrix");
+    convertOffsetUniform_ = glGetUniformLocation(shaderProgram_, "offset");
+
+    glGenVertexArrays(ONE, &VAO_);
+    glBindVertexArray(VAO_);
+    
+    glGenTextures(THREE, textureId_);
+    for (auto &it : textureId_) {
+        glBindTexture(GL_TEXTURE_2D, it);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    }
+    LOGD("end YuvRender::InitRender");
+}
+
+void YuvRender::SetYUVData(int32_t width, int32_t height, const std::vector<unsigned char> &y,
+    const std::vector<unsigned char> &u, const std::vector<unsigned char> &v)
+{
+    widthYUV_ = width;
+    heightYUV_ = height;
+    this->y_ = std::move(y);
+    this->u_ = std::move(u);
+    this->v_ = std::move(v);
+    if ((widthYUV_ / TWO) % FOUR != ZERO) {
+        this->unpackAlign_ = (widthYUV_ / TWO) % TWO == ZERO? TWO : ONE;
+    }
+}
+
+void YuvRender::RenderFrame()
+{
+    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+    glClear(GL_COLOR_BUFFER_BIT);
+    Draw();
+}
+
+void YuvRender::ClearFrame()
+{
+    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+    glClear(GL_COLOR_BUFFER_BIT);
+    glViewport(ZERO, ZERO, ZERO, ZERO);
+}
+
+void YuvRender::Draw()
+{
+    if (widthYUV_ > ZERO && heightYUV_ > ZERO && !y_.empty() && !u_.empty() && !v_.empty()) {
+        glUseProgram(shaderProgram_);
+        vertex_.EnableVertexAttrib(avPosition_);
+        alpha_.EnableVertexAttrib(alphaPosition_);
+        rgb_.EnableVertexAttrib(rgbPosition_);
+
+        glPixelStorei(GL_UNPACK_ALIGNMENT, unpackAlign_);
+        
+        // 激活纹理0来绑定y数据
+        glActiveTexture(GL_TEXTURE0);
+        glBindTexture(GL_TEXTURE_2D, textureId_[ZERO]);
+        glTexImage2D(GL_TEXTURE_2D, ZERO, GL_LUMINANCE,
+            widthYUV_, heightYUV_, ZERO, GL_LUMINANCE, GL_UNSIGNED_BYTE, y_.data());
+
+        // 激活纹理1来绑定u数据
+        glActiveTexture(GL_TEXTURE1);
+        glBindTexture(GL_TEXTURE_2D, textureId_[ONE]);
+        glTexImage2D(GL_TEXTURE_2D, ZERO, GL_LUMINANCE,
+            widthYUV_ / TWO, heightYUV_ / TWO, ZERO, GL_LUMINANCE, GL_UNSIGNED_BYTE, u_.data());
+
+        // 激活纹理2来绑定v数据
+        glActiveTexture(GL_TEXTURE2);
+        glBindTexture(GL_TEXTURE_2D, textureId_[TWO]);
+        glTexImage2D(GL_TEXTURE_2D, ZERO, GL_LUMINANCE,
+            widthYUV_ / TWO, heightYUV_ / TWO, ZERO, GL_LUMINANCE, GL_UNSIGNED_BYTE, v_.data());
+
+        // 给fragment_shader里面yuv变量设置值   0 1 标识纹理x
+        glUniform1i(samplerY_, ZERO);
+        glUniform1i(samplerU_, ONE);
+        glUniform1i(samplerV_, TWO);
+        
+        glUniform3fv(convertOffsetUniform_, ONE, YUV_OFFSET);
+        glUniformMatrix3fv(convertMatrixUniform_, ONE, false, YUV_MATRIX);
+
+        // 绘制
+        glBindVertexArray(VAO_);
+        glDrawArrays(GL_TRIANGLE_STRIP, ZERO, FOUR);
+        y_.erase(y_.begin(), y_.end());
+        u_.erase(u_.begin(), u_.end());
+        v_.erase(v_.begin(), v_.end());
+        glDisableVertexAttribArray(avPosition_);
+        glDisableVertexAttribArray(rgbPosition_);
+        glDisableVertexAttribArray(alphaPosition_);
+    } else {
+        LOGE("YuvRender::Draw error");
+    }
+}
+
+void YuvRender::ReleaseTexture()
+{
+    glDeleteTextures(THREE, textureId_);
+}
+
+GLuint YuvRender::GetExternalTexture()
+{
+    return textureId_[ZERO];
+}
+
+void YuvRender::SetAnimConfig(std::shared_ptr<AnimConfig> animConfig)
+{
+    LOGD("enter YuvRender::SetAnimConfig");
+    if (!animConfig) {
+        LOGE("YuvRender animConfig nullptr");
+        return;
+    }
+    PointRect pointRect(ZERO, ZERO, animConfig->width, animConfig->height);
+    vertex_.Create(animConfig->width, animConfig->height, pointRect, vertex_.array.get());
+    vertex_.SetArray(vertex_.array.get());
+    TexCoordsUtil::Create(animConfig->videoWidth, animConfig->videoHeight,
+        animConfig->alphaPointRect, alpha_.array.get());
+    TexCoordsUtil::Create(animConfig->videoWidth, animConfig->videoHeight,
+        animConfig->rgbPointRect, rgb_.array.get());
+    alpha_.SetArray(alpha_.array.get());
+    rgb_.SetArray(rgb_.array.get());
+    LOGD("end YuvRender::SetAnimConfig");
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/resource_request.cpp b/ohos/vap/vap_module/src/main/cpp/resource_request.cpp
new file mode 100644
index 00000000..238ac4e3
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/resource_request.cpp
@@ -0,0 +1,247 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "resource_request.h"
+
+#include <multimedia/image_framework/image/image_source_native.h>
+#include <native_drawing/drawing_bitmap.h>
+#include <native_drawing/drawing_canvas.h>
+#include <native_drawing/drawing_color.h>
+#include <native_drawing/drawing_font_collection.h>
+#include <native_drawing/drawing_text_declaration.h>
+#include <native_drawing/drawing_text_typography.h>
+#include <string>
+
+#include "log.h"
+#include "common_const.h"
+
+using namespace CommonConst;
+
+void ResourceRequest::SetWidth(uint64_t width) { width_ = width; }
+
+void ResourceRequest::SetHeight(uint64_t height) { height_ = height; }
+
+void ResourceRequest::Create()
+{
+    cBitmap_ = OH_Drawing_BitmapCreate();
+    // 定义bitmap的像素格式
+    OH_Drawing_BitmapFormat cFormat{COLOR_FORMAT_RGBA_8888, ALPHA_FORMAT_UNPREMUL};
+    // 构造对应格式的bitmap
+    OH_Drawing_BitmapBuild(cBitmap_, width_, height_, &cFormat);
+
+    // 创建一个canvas对象
+    cCanvas_ = OH_Drawing_CanvasCreate();
+    // 将画布与bitmap绑定，画布画的内容会输出到绑定的bitmap内存中
+    OH_Drawing_CanvasBind(cCanvas_, cBitmap_);
+    // 使用白色清除画布内容
+    OH_Drawing_CanvasClear(cCanvas_, OH_Drawing_ColorSetArgb(0x00, 0xFF, 0xFF, 0xAA));
+    if (!cBitmap_ || !cCanvas_) {
+        LOGE("Create error");
+    }
+}
+
+void ResourceRequest::DrawText(TextOption &txtOpt)
+{
+    // 选择从左到右/左对齐等排版属性
+    OH_Drawing_TypographyStyle *typoStyle = OH_Drawing_CreateTypographyStyle();
+    OH_Drawing_SetTypographyTextDirection(typoStyle, TEXT_DIRECTION_LTR);
+    OH_Drawing_SetTypographyTextAlign(typoStyle, txtOpt.textAlign);
+    
+    // 设置文字颜色，
+    OH_Drawing_TextStyle *txtStyle = OH_Drawing_CreateTextStyle();
+    ColorARGB color = txtOpt.color;
+    LOGD("DrawText color argb: %{public}02x-%{public}02x-%{public}02x-%{public}02x",
+        color.alpha, color.red, color.green, color.blue);
+    LOGD("DrawText ta fw: %{public}d-%{public}d",
+        txtOpt.fontWeight, txtOpt.textAlign);
+    
+    OH_Drawing_SetTextStyleColor(txtStyle, OH_Drawing_ColorSetArgb(color.alpha, color.red, color.green, color.blue));
+    // 设置文字大小、字重等属性
+    double fontSize = DEFAULT_FONT_SIZE;
+    LOGD("strlen(text): %{public}zu, fontSize: %{public}f", strlen(txtOpt.text), fontSize);
+    OH_Drawing_SetTextStyleFontSize(txtStyle, fontSize);
+    OH_Drawing_SetTextStyleFontWeight(txtStyle, txtOpt.fontWeight);
+    OH_Drawing_SetTextStyleBaseLine(txtStyle, TEXT_BASELINE_ALPHABETIC);
+    OH_Drawing_SetTextStyleFontHeight(txtStyle, 1);
+    OH_Drawing_FontCollection* fontCollection = OH_Drawing_CreateSharedFontCollection();
+    // 设置字体类型等
+    OH_Drawing_SetTextStyleFontStyle(txtStyle, FONT_STYLE_NORMAL);
+    OH_Drawing_SetTextStyleLocale(txtStyle, "zh");
+    OH_Drawing_TypographyCreate *handler =
+        OH_Drawing_CreateTypographyHandler(typoStyle, fontCollection);
+    OH_Drawing_TypographyHandlerPushTextStyle(handler, txtStyle);
+    // 设置文字内容
+    OH_Drawing_TypographyHandlerAddText(handler, txtOpt.text);
+    OH_Drawing_TypographyHandlerPopTextStyle(handler);
+    OH_Drawing_Typography *typography = OH_Drawing_CreateTypography(handler);
+    // 设置页面最大宽度
+    double maxWidth = width_;
+    OH_Drawing_TypographyLayout(typography, maxWidth);
+    // 设置文本在画布上绘制的起始位置
+    double position[2] = {0, (height_ - fontSize) / 2.0};
+    // 将文本绘制到画布上
+    OH_Drawing_TypographyPaint(typography, cCanvas_, position[0], position[1]);
+    
+    OH_Drawing_DestroyTypography(typography);
+    OH_Drawing_DestroyTypographyHandler(handler);
+    OH_Drawing_DestroyFontCollection(fontCollection);
+    OH_Drawing_DestroyTextStyle(txtStyle);
+    OH_Drawing_DestroyTypographyStyle(typoStyle);
+}
+
+void ResourceRequest::GetData(std::vector<uint8_t> &data)
+{
+    void *bitmapAddr = OH_Drawing_BitmapGetPixels(cBitmap_);
+
+    OH_Drawing_Image_Info info;
+    OH_Drawing_BitmapGetImageInfo(cBitmap_, &info);
+
+    uint8_t *value = static_cast<uint8_t *>(bitmapAddr);
+    LOGD("GetData data:%{public}d, %{public}ld * %{public}ld %{public}d ** %{public}d", value == nullptr, width_,
+         height_, info.width, info.height);
+    if (value && width_ > 0 && height_ > 0) {
+        LOGD("GetData ok");
+    } else {
+        LOGE("GetData invalid data");
+        return;
+    }
+    data.assign(value, value + width_ * height_ * FOUR);
+}
+
+void ResourceRequest::Release()
+{
+    if (cCanvas_) {
+        // 销毁canvas对象
+        OH_Drawing_CanvasDestroy(cCanvas_);
+        cCanvas_ = nullptr;
+    }
+    if (cBitmap_) {
+        // 销毁bitmap对象
+        OH_Drawing_BitmapDestroy(cBitmap_);
+        cBitmap_ = nullptr;
+    }
+}
+
+static void GetSourceInfo(OH_ImageSourceNative *source, uint32_t &width, uint32_t &height)
+{
+    OH_ImageSource_Info *imageSrcInfo = nullptr;
+    OH_ImageSourceInfo_Create(&imageSrcInfo);
+    Image_ErrorCode errCode = OH_ImageSourceNative_GetImageInfo(source, 0, imageSrcInfo);
+    if (errCode != IMAGE_SUCCESS) {
+        LOGE("FetchImg OH_ImageSourceNative_GetImageInfo failed, errCode: %{public}d.", errCode);
+        return;
+    }
+    OH_ImageSourceInfo_GetWidth(imageSrcInfo, &width);
+    OH_ImageSourceInfo_GetHeight(imageSrcInfo, &height);
+    LOGD("Open imageSrcInfo:  %{public}d * %{public}d", width, height);
+    OH_ImageSourceInfo_Release(imageSrcInfo);
+}
+
+static void GetPixelMapInfo(OH_PixelmapNative *resPixMap, uint32_t &height, uint32_t &rowStride)
+{
+    OH_Pixelmap_ImageInfo *imgInfo = nullptr;
+    OH_PixelmapImageInfo_Create(&imgInfo);
+    Image_ErrorCode errCode = OH_PixelmapNative_GetImageInfo(resPixMap, imgInfo);
+    if (errCode != IMAGE_SUCCESS) {
+        LOGE("FetchImg OH_PixelmapNative_GetImageInfo failed, errCode: %{public}d", errCode);
+        return;
+    }
+
+    int32_t alphaType;
+    uint32_t width;
+    int32_t pixelFormat;
+    OH_PixelmapImageInfo_GetWidth(imgInfo, &width);
+    OH_PixelmapImageInfo_GetHeight(imgInfo, &height);
+    OH_PixelmapImageInfo_GetRowStride(imgInfo, &rowStride);
+    OH_PixelmapImageInfo_GetPixelFormat(imgInfo, &pixelFormat);
+    OH_PixelmapImageInfo_GetAlphaType(imgInfo, &alphaType);
+    OH_PixelmapImageInfo_Release(imgInfo);
+    LOGD("ImagePixelmap GetImageInfo success, width: %{public}d, height: %{public}d, rowStride: "
+         "%{public}d, pixelFormat: %{public}d",
+         width, height, rowStride, pixelFormat);
+}
+
+void ResourceRequest::FetchImg(std::vector<uint8_t> &data, ImageOption &imgOpt)
+{
+    std::string uri = imgOpt.uri;
+    if (uri.empty()) {
+        LOGE("FetchImg uri empty");
+        return;
+    }
+
+    LOGD("FetchImg OH_ImageSourceNative_CreateFromUri,: %{public}s. %{public}p", uri.c_str(), source_);
+    Image_ErrorCode errCode = OH_ImageSourceNative_CreateFromUri(const_cast<char *>(uri.c_str()), uri.size(), &source_);
+    if (errCode != IMAGE_SUCCESS) {
+        LOGE("FetchImg OH_ImageSourceNative_CreateFromUri failed, errCode: %{public}d.", errCode);
+        return;
+    }
+
+    uint32_t width;
+    uint32_t height;
+    GetSourceInfo(source_, width, height);
+
+    // 通过图片解码参数创建PixelMap列表
+    OH_DecodingOptions *opts = nullptr;
+    OH_DecodingOptions_Create(&opts);
+    int32_t pixelFormat = PIXEL_FORMAT_RGBA_8888;
+    OH_DecodingOptions_SetPixelFormat(opts, pixelFormat);
+
+    errCode = OH_ImageSourceNative_CreatePixelmap(source_, opts, &resPixMap_);
+    OH_DecodingOptions_Release(opts);
+    if (errCode != IMAGE_SUCCESS) {
+        LOGE("FetchImg OH_ImageSourceNative_CreatePixelmap failed, errCode: %{public}d.", errCode);
+        return;
+    }
+
+    float scaleX = imgOpt.width / static_cast<float>(width);
+    float scaleY = imgOpt.height / static_cast<float>(height);
+    errCode = OH_PixelmapNative_Scale(resPixMap_, scaleX, scaleY);
+
+    OH_Pixelmap_ImageInfo *imgInfo = nullptr;
+    OH_PixelmapImageInfo_Create(&imgInfo);
+    errCode = OH_PixelmapNative_GetImageInfo(resPixMap_, imgInfo);
+    if (errCode != IMAGE_SUCCESS) {
+        LOGE("FetchImg OH_PixelmapNative_GetImageInfo failed, errCode: %{public}d", errCode);
+        return;
+    }
+    
+    uint32_t pixelMapHeight;
+    uint32_t rowStride;
+    GetPixelMapInfo(resPixMap_, pixelMapHeight, rowStride);
+    size_t bufferSize = pixelMapHeight * rowStride;
+    std::vector<uint8_t> buffer(bufferSize);
+
+    errCode = OH_PixelmapNative_ReadPixels(resPixMap_, buffer.data(), &bufferSize);
+    data.assign(buffer.data(), buffer.data() + bufferSize);
+    LOGD("OH_PixelmapNative_ReadPixels %{public}lu --- %{public}lu", data.size(), buffer.size());
+    
+    OH_PixelmapNative_Release(resPixMap_);
+    OH_ImageSourceNative_Release(source_);
+    source_ = nullptr;
+    resPixMap_ = nullptr;
+}
+
+void ResourceRequest::FetchText(std::vector<uint8_t> &data, TextOption &txtOpt)
+{
+    if (!(txtOpt.text) || txtOpt.height <= 0 || txtOpt.width <= 0) {
+        LOGE("FetchText error param");
+        return;
+    }
+    SetWidth(txtOpt.width);
+    SetHeight(txtOpt.height);
+    Create();
+    DrawText(txtOpt);
+    GetData(data);
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/types/libvap/index.d.ts b/ohos/vap/vap_module/src/main/cpp/types/libvap/index.d.ts
new file mode 100644
index 00000000..611a6cfb
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/types/libvap/index.d.ts
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2023 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export const getContext: (a: number) => any;
diff --git a/ohos/vap/vap_module/src/main/cpp/types/libvap/oh-package.json5 b/ohos/vap/vap_module/src/main/cpp/types/libvap/oh-package.json5
new file mode 100644
index 00000000..bd3923a4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/types/libvap/oh-package.json5
@@ -0,0 +1,6 @@
+{
+  "name": "libvap.so",
+  "types": "./index.d.ts",
+  "version": "1",
+  "description": "Please describe the basic information."
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/util/shader_util.cpp b/ohos/vap/vap_module/src/main/cpp/util/shader_util.cpp
new file mode 100644
index 00000000..fed9e1d7
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/util/shader_util.cpp
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "shader_util.h"
+#include <string>
+#include "log.h"
+
+GLuint ShaderUtil::CreateProgram(const char *vertexSource, const char *fragmentSource)
+{
+    LOGD("CompileShader: CreateProgram");
+    GLuint vertexShaderHandle = CompileShader(GL_VERTEX_SHADER, vertexSource);
+    if (!vertexShaderHandle) {
+        LOGE("CompileShader: vertexShaderHandle error");
+        return 0;
+    }
+    GLuint fragmentShaderHandle = CompileShader(GL_FRAGMENT_SHADER, fragmentSource);
+    if (!fragmentShaderHandle) {
+        LOGE("CompileShader: fragmentSource error");
+        glDeleteShader(vertexShaderHandle);
+        return 0;
+    }
+    return CreateAndLinkProgram(vertexShaderHandle, fragmentShaderHandle);
+}
+
+GLuint ShaderUtil::CompileShader(GLenum shaderType, const char *shaderSource)
+{
+    GLuint shaderHandle = glCreateShader(shaderType);
+    if (shaderHandle == 0) {
+        LOGE("CompileShader error");
+        return 0;
+    }
+    
+    GLint compileStatus;
+    glShaderSource(shaderHandle, 1, &shaderSource, NULL);
+    glCompileShader(shaderHandle);
+    glGetShaderiv(shaderHandle, GL_COMPILE_STATUS, &compileStatus);
+    if (!compileStatus) {
+        GLint infoLen = 0;
+        glGetShaderiv(shaderHandle, GL_INFO_LOG_LENGTH, &infoLen);
+
+        if (infoLen > 1) {
+            std::string infoLog(infoLen, '\0');
+            glGetShaderInfoLog(shaderHandle, infoLen, nullptr, (GLchar *)&infoLog);
+            LOGE("Error compiling shader:%{public}s\n", infoLog.c_str());
+        }
+
+        glDeleteShader(shaderHandle);
+        return 0;
+    }
+    return shaderHandle;
+}
+
+GLuint ShaderUtil::CreateAndLinkProgram(GLuint vertexShaderHandle, GLuint fragmentShaderHandle)
+{
+    GLuint programHandle = glCreateProgram();
+    GLint linkStatus;
+    
+    if (programHandle != 0) {
+        glAttachShader(programHandle, vertexShaderHandle);
+        glAttachShader(programHandle, fragmentShaderHandle);
+        glLinkProgram(programHandle);
+        glGetProgramiv(programHandle, GL_LINK_STATUS, &linkStatus);
+        if (!linkStatus) {
+            LOGE("CreateProgram linked error");
+            GLint infoLen = 0;
+            glGetProgramiv(programHandle, GL_INFO_LOG_LENGTH, &infoLen);
+            if (infoLen > 1) {
+                std::string infoLog(infoLen, '\0');
+                glGetProgramInfoLog(programHandle, infoLen, nullptr, (GLchar *)&infoLog);
+                LOGE("Error linking program:%{public}s\n", infoLog.c_str());
+            }
+            glDeleteProgram(programHandle);
+            return 0;
+        }
+    }
+    return programHandle;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/util/tex_coords_util.cpp b/ohos/vap/vap_module/src/main/cpp/util/tex_coords_util.cpp
new file mode 100644
index 00000000..0b8ecba4
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/util/tex_coords_util.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "tex_coords_util.h"
+#include "common_const.h"
+
+using namespace CommonConst;
+
+void TexCoordsUtil::Create(int32_t width, int32_t height, PointRect rect, float *array)
+{
+    if (width > ZERO && height > ZERO) {
+        // x0
+        array[ZERO] = static_cast<float>(rect.x) / width;
+        // y0
+        array[ONE] = static_cast<float>(rect.y) / height;
+    
+        // x1
+        array[TWO] = static_cast<float>(rect.x) / width;
+        // y1
+        array[THREE] = (static_cast<float>(rect.y) + rect.h) / height;
+    
+        // x2
+        array[FOUR] = (static_cast<float>(rect.x) + rect.w) / width;
+        // y2
+        array[FIVE] = static_cast<float>(rect.y) / height;
+    
+        // x3
+        array[SIX] = (static_cast<float>(rect.x) + rect.w) / width;
+        // y3
+        array[SEVEN] = (static_cast<float>(rect.y) + rect.h) / height;
+    }
+}
+
+void TexCoordsUtil::Rotate90(float *array)
+{
+    // 0->2 1->0 3->1 2->3
+    auto tx = array[ZERO];
+    auto ty = array[ONE];
+
+    // 1->0
+    array[ZERO] = array[TWO];
+    array[ONE] = array[THREE];
+
+    // 3->1
+    array[TWO] = array[SIX];
+    array[THREE] = array[SEVEN];
+
+    // 2->3
+    array[SIX] = array[FOUR];
+    array[SEVEN] = array[FIVE];
+
+    // 0->2
+    array[FOUR] = tx;
+    array[FIVE] = ty;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/util/texture_load_util.cpp b/ohos/vap/vap_module/src/main/cpp/util/texture_load_util.cpp
new file mode 100644
index 00000000..107fa73f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/util/texture_load_util.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "texture_load_util.h"
+
+#include <GLES2/gl2ext.h>
+#include "log.h"
+
+void TextureLoadUtil::loadTexture(BitMap bitmap, GLuint *textureId)
+{
+    if (!textureId) {
+        LOGE("textureId nullptr");
+        return;
+    }
+    GLuint textures[1];
+    glGenTextures(1, textures);
+    if (textures[0] == 0) {
+        LOGE("glGenTextures error");
+        return;
+    }
+
+    if (bitmap.pixelsData.empty()) {
+        glDeleteTextures(1, textures);
+        LOGE("pixelsData empty");
+        return;
+    }
+
+    glBindTexture(GL_TEXTURE_2D, textures[0]);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap.imgWidth, bitmap.imgHeight, 0, GL_RGBA,
+        GL_UNSIGNED_BYTE, bitmap.pixelsData.data());
+    glGenerateMipmap(GL_TEXTURE_2D);
+    glBindTexture(GL_TEXTURE_2D, 0);
+    
+    GLenum error = glGetError();
+    if (error != GL_NO_ERROR) {
+        // 处理错误
+        LOGE("glGetError error: %{public}x", error);
+    }
+
+    *textureId = textures[0];
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/util/vertex_util.cpp b/ohos/vap/vap_module/src/main/cpp/util/vertex_util.cpp
new file mode 100644
index 00000000..e8b79b6f
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/util/vertex_util.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "vertex_util.h"
+#include "log.h"
+#include "common_const.h"
+
+using namespace CommonConst;
+
+void VertexUtil::Create(int32_t width, int32_t height, const PointRect &rect, float *array)
+{
+    if (width > ZERO && height > ZERO) {
+        array[ZERO] = SwitchX(static_cast<float>(rect.x) / width);
+        array[ONE] = SwitchY(static_cast<float>(rect.y) / height);
+        array[TWO] = SwitchX(static_cast<float>(rect.x) / width);
+        array[THREE] = SwitchY((static_cast<float>(rect.y) + rect.h) / height);
+        array[FOUR] = SwitchX((static_cast<float>(rect.x) + rect.w) / width);
+        array[FIVE] = SwitchY(static_cast<float>(rect.y) / height);
+        array[SIX] = SwitchX((static_cast<float>(rect.x) + rect.w) / width);
+        array[SEVEN] = SwitchY((static_cast<float>(rect.y) + rect.h) / height);
+    }
+}
+
+float VertexUtil::SwitchX(float x)
+{
+    return x * 2.0f - 1.0f;
+}
+
+float VertexUtil::SwitchY(float y)
+{
+    return ((y * 2.0f - 2.0f) * -1.0f) - 1.0f;
+}
+
+void VertexUtil::EnableVertexAttrib(GLuint index)
+{
+    GLuint buffer;
+    glGenBuffers(ONE, &buffer);
+    glBindBuffer(GL_ARRAY_BUFFER, buffer);
+    glBufferData(GL_ARRAY_BUFFER, sizeof(*floatBuffer) * EIGHT, floatBuffer, GL_STATIC_DRAW);
+    glVertexAttribPointer(index, TWO, GL_FLOAT, GL_FALSE, sizeof(float) * TWO, (void *)ZERO);
+    glEnableVertexAttribArray(index);
+}
+
+void VertexUtil::SetArray(float *array)
+{
+    floatBuffer = array;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/cpp/vap_callback.cpp b/ohos/vap/vap_module/src/main/cpp/vap_callback.cpp
new file mode 100644
index 00000000..d6b0e971
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/vap_callback.cpp
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "vap_callback.h"
+
+namespace {
+constexpr int LIMIT_LOGD_FREQUENCY = 50;
+}
+
+// 自定义写入数据函数
+int32_t VAPCallback::OnRenderWriteData(OH_AudioRenderer *renderer, void *userData, void *buffer, int32_t length)
+{
+    if (userData == nullptr || buffer == nullptr) {
+        LOGD("OnRenderWriteData con not get userData");
+        return 1;
+    }
+    (void)renderer;
+    (void)length;
+    ADecSignal *codecUserData = static_cast<ADecSignal *>(userData);
+    
+    // 将待播放的数据，按length长度写入buffer
+    uint8_t *dest = (uint8_t *)buffer;
+    size_t index = 0;
+    std::unique_lock<std::mutex> lock(codecUserData->audioOutputMutex);
+    // 从队列中取出需要播放的长度为length的数据
+    while (!codecUserData->renderQueue.empty() && index < length) {
+        dest[index++] = codecUserData->renderQueue.front();
+        codecUserData->renderQueue.pop();
+    }
+    LOGD("render BufferLength:%{public}d, renderQueue.size: %{public}lu "
+         "renderReadSize: %{public}lu",
+         length, codecUserData->renderQueue.size(), index);
+    if (codecUserData->renderQueue.size() < length) {
+        codecUserData->renderCond.notify_all();
+    }
+    return 0;
+}
+// 自定义音频流事件函数
+int32_t VAPCallback::OnRenderStreamEvent(OH_AudioRenderer *renderer, void *userData, OH_AudioStream_Event event)
+{
+    (void)renderer;
+    (void)userData;
+    (void)event;
+    // 根据event表示的音频流事件信息，更新播放器状态和界面
+    return 0;
+}
+// 自定义音频中断事件函数
+int32_t VAPCallback::OnRenderInterruptEvent(OH_AudioRenderer *renderer,
+    void *userData, OH_AudioInterrupt_ForceType type, OH_AudioInterrupt_Hint hint)
+{
+    (void)renderer;
+    (void)userData;
+    (void)type;
+    (void)hint;
+    if (userData == nullptr) {
+        LOGD("OnRenderWriteData con not get userData");
+        return 1;
+    }
+    ADecSignal *codecUserData = static_cast<ADecSignal *>(userData);
+    codecUserData->isInterrupt = true;
+    LOGD("audio RenderInterruptEvent type: %{public}d hint: %{public}d", type, hint);
+    return 0;
+}
+// 自定义异常回调函数
+int32_t VAPCallback::OnRenderError(OH_AudioRenderer *renderer, void *userData, OH_AudioStream_Result error)
+{
+    (void)renderer;
+    (void)userData;
+    (void)error;
+    LOGE("OnRenderError");
+    // 根据error表示的音频异常信息，做出相应的处理
+    return 0;
+}
+
+void VAPCallback::OnCodecError(OH_AVCodec *codec, int32_t errorCode, void *userData)
+{
+    (void)codec;
+    (void)errorCode;
+    (void)userData;
+    LOGD("On codec error, error code: %{public}d", errorCode);
+}
+
+void VAPCallback::OnCodecFormatChange(OH_AVCodec *codec, OH_AVFormat *format, void *userData)
+{
+    LOGD("On codec format change");
+}
+
+void VAPCallback::OnNeedInputBuffer(OH_AVCodec *codec, uint32_t index, OH_AVBuffer *buffer, void *userData)
+{
+    if (userData == nullptr) {
+        return;
+    }
+    (void)codec;
+    VDecSignal *codecUserData = static_cast<VDecSignal *>(userData);
+    std::unique_lock<std::mutex> lock(codecUserData->inputMutex);
+    codecUserData->inputBufferInfoQueue.emplace(index, buffer);
+    codecUserData->inputCond.notify_all();
+}
+
+void VAPCallback::OnNewOutputBuffer(OH_AVCodec *codec, uint32_t index, OH_AVBuffer *buffer, void *userData)
+{
+    if (userData == nullptr) {
+        return;
+    }
+    (void)codec;
+    VDecSignal *codecUserData = static_cast<VDecSignal *>(userData);
+    std::unique_lock<std::mutex> lock(codecUserData->outputMutex);
+    codecUserData->outputBufferInfoQueue.emplace(index, buffer, codec);
+    codecUserData->outputCond.notify_all();
+}
diff --git a/ohos/vap/vap_module/src/main/cpp/video_decoder.cpp b/ohos/vap/vap_module/src/main/cpp/video_decoder.cpp
new file mode 100644
index 00000000..6c202d3b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/cpp/video_decoder.cpp
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "video_decoder.h"
+
+#include <multimedia/player_framework/native_avcodec_videodecoder.h>
+#include <multimedia/player_framework/native_averrors.h>
+
+#include "log.h"
+#include "vap_callback.h"
+
+#undef LOG_TAG
+#define LOG_TAG "VideoDecoder"
+
+VideoDecoder::~VideoDecoder()
+{
+    Release();
+}
+
+int32_t VideoDecoder::CreateVideoDecoder(const std::string &codecMime)
+{
+    decoder_ = OH_VideoDecoder_CreateByMime(codecMime.c_str());
+    if (decoder_ == nullptr) {
+        LOGE("create decoder_ failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t VideoDecoder::SetCallback(VDecSignal *signal)
+{
+    int32_t ret = AV_ERR_OK;
+    ret = OH_VideoDecoder_RegisterCallback(decoder_,
+                                           {VAPCallback::OnCodecError, VAPCallback::OnCodecFormatChange,
+                                            VAPCallback::OnNeedInputBuffer, VAPCallback::OnNewOutputBuffer},
+                                           signal);
+    if (ret != AV_ERR_OK) {
+        LOGE("Set callback failed, ret: %{public}d", ret);
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t VideoDecoder::ConfigureVideoDecoder(const VAPInfo &info)
+{
+    OH_AVFormat *format = OH_AVFormat_Create();
+    if (format == nullptr) {
+        LOGE("AVFormat create failed");
+        return AV_ERR_UNKNOWN;
+    }
+    OH_AVFormat_SetIntValue(format, OH_MD_KEY_WIDTH, info.videoWidth);
+    OH_AVFormat_SetIntValue(format, OH_MD_KEY_HEIGHT, info.videoHeight);
+    OH_AVFormat_SetDoubleValue(format, OH_MD_KEY_FRAME_RATE, info.frameRate);
+    OH_AVFormat_SetIntValue(format, OH_MD_KEY_PIXEL_FORMAT, info.pixelFormat);
+    LOGD("VideoDecoder config: %{public}d*%{public}d, %{public}.1f fps", info.videoWidth,
+        info.videoHeight, info.frameRate);
+    int ret = OH_VideoDecoder_Configure(decoder_, format);
+    if (ret != AV_ERR_OK) {
+        LOGE("Config failed, ret: %{public}d", ret); // 9 AV_ERR_UNSUPPORT
+        return AV_ERR_UNKNOWN;
+    }
+    OH_AVFormat_Destroy(format);
+    format = nullptr;
+
+    return AV_ERR_OK;
+}
+
+int32_t VideoDecoder::Config(const VAPInfo &info, VDecSignal *signal)
+{
+    if (decoder_ == nullptr) {
+        LOGE("Decoder is null");
+        return AV_ERR_UNKNOWN;
+    }
+    if (signal == nullptr) {
+        LOGE("Invalid param: codecUserData");
+        return AV_ERR_UNKNOWN;
+    }
+
+    // Configure video decoder_
+    int32_t ret = ConfigureVideoDecoder(info);
+    if (ret != AV_ERR_OK) {
+        LOGE("Configure failed");
+        return AV_ERR_UNKNOWN;
+    }
+
+    // SetCallback for video decoder_
+    ret = SetCallback(signal);
+    if (ret != AV_ERR_OK) {
+        LOGE("Set callback failed, ret: %{public}d", ret);
+        return AV_ERR_UNKNOWN;
+    }
+
+    // Prepare video decoder_
+    {
+        int ret = OH_VideoDecoder_Prepare(decoder_);
+        if (ret != AV_ERR_OK) {
+            LOGE("Prepare failed, ret: %{public}d", ret);
+            return AV_ERR_UNKNOWN;
+        }
+    }
+
+    return AV_ERR_OK;
+}
+
+int32_t VideoDecoder::StartVideoDecoder()
+{
+    if (decoder_ == nullptr) {
+        LOGE("Decoder is null");
+        return AV_ERR_UNKNOWN;
+    }
+
+    int ret = OH_VideoDecoder_Start(decoder_);
+    if (ret != AV_ERR_OK) {
+        LOGE("Start failed, ret: %{public}d", ret);
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t VideoDecoder::PushInputData(CodecBufferInfo &info)
+{
+    if (decoder_ == nullptr) {
+        LOGE("Decoder is null");
+        return AV_ERR_UNKNOWN;
+    }
+    int32_t ret = OH_AVBuffer_SetBufferAttr(reinterpret_cast<OH_AVBuffer *>(info.buffer), &info.attr);
+    if (ret != AV_ERR_OK) {
+        LOGE("Set avbuffer attr failed");
+        return AV_ERR_UNKNOWN;
+    }
+    ret = OH_VideoDecoder_PushInputBuffer(decoder_, info.bufferIndex);
+    if (ret != AV_ERR_OK) {
+        LOGE("Push input data failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t VideoDecoder::FreeOutputData(uint32_t bufferIndex, bool render)
+{
+    if (decoder_ == nullptr) {
+        LOGE("Decoder is null");
+        return AV_ERR_UNKNOWN;
+    }
+
+    int32_t ret = AV_ERR_OK;
+    if (render) {
+        ret = OH_VideoDecoder_RenderOutputBuffer(decoder_, bufferIndex);
+    } else {
+        ret = OH_VideoDecoder_FreeOutputBuffer(decoder_, bufferIndex);
+    }
+    if (ret != AV_ERR_OK) {
+        LOGE("Free output data failed");
+        return AV_ERR_UNKNOWN;
+    }
+    return AV_ERR_OK;
+}
+
+int32_t VideoDecoder::Release()
+{
+    if (decoder_ != nullptr) {
+        OH_VideoDecoder_Flush(decoder_);
+        OH_VideoDecoder_Stop(decoder_);
+        OH_VideoDecoder_Destroy(decoder_);
+        decoder_ = nullptr;
+    }
+    return AV_ERR_OK;
+}
diff --git a/ohos/vap/vap_module/src/main/ets/DataDeclare.ets b/ohos/vap/vap_module/src/main/ets/DataDeclare.ets
new file mode 100644
index 00000000..722692f9
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/ets/DataDeclare.ets
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export enum VAPFontWeight {
+  // 100-900
+  THIN,
+  EXTRA_LIGHT,
+  LIGHT,
+  NORMAL,
+  MEDIUM,
+  SEMI_BOLD,
+  BOLD,
+  EXTRA_BOLD,
+  BLACK
+}
+;
+
+export interface VAPColor {
+  a: number,
+  r: number,
+  g: number,
+  b: number
+}
+;
+
+export enum VAPTextAlign {
+  TEXT_ALIGN_LEFT,
+  TEXT_ALIGN_RIGHT,
+  TEXT_ALIGN_CENTER,
+  TEXT_ALIGN_JUSTIFY,
+  TEXT_ALIGN_START,
+  TEXT_ALIGN_END,
+}
+;
+
+export interface MixData {
+  tag: string
+  txt?: string
+  imgUri?: string
+  color?: VAPColor
+  fontWeight?: VAPFontWeight
+  textAlign?: VAPTextAlign
+}
+;
+
+export enum FitType {
+  FIT_XY,
+  FIT_CENTER,
+  CENTER_CROP,
+}
+
+export enum VapState {
+  UNKNOWN,
+  READY,
+  START,
+  RENDER,
+  COMPLETE,
+  DESTROY,
+  FAILED
+}
+;
+
+export enum Orien {
+  ORIEN_DEFAULT = 0, // 兼容模式
+  ORIEN_PORTRAIT, // 适配竖屏的视频
+  ORIEN_LANDSCAPE // 适配横屏的视频
+}
+;
+
+export interface PointRect {
+  x: number,
+  y: number,
+  w: number,
+  h: number
+}
+;
+
+export interface AnimConfig {
+  version: number
+  totalFrames: number
+  width: number
+  height: number
+  videoWidth: number
+  videoHeight: number
+  orien: Orien
+  fps: number
+  isMix: boolean
+  alphaPointRect: PointRect
+  rgbPointRect: PointRect
+  currentFrame: number
+}
+;
+
+export enum SrcType {
+  UNKNOWN,
+  IMG,
+  TXT,
+}
+;
+
+export interface SrcInfo {
+  tag: string;
+  type: SrcType;
+}
+;
+
+export interface VideoInfo {
+  width: number;
+  height: number;
+  srcInfos: Array<SrcInfo>
+}
+;
+
+export enum VideoMode {
+  // 视频对齐方式 (兼容老版本视频模式)
+  VIDEO_MODE_SPLIT_HORIZONTAL = 1, // 视频左右对齐（alpha左\rgb右）
+  VIDEO_MODE_SPLIT_VERTICAL, // 视频上下对齐（alpha上\rgb下）
+  VIDEO_MODE_SPLIT_HORIZONTAL_REVERSE, // 视频左右对齐（rgb左\alpha右）
+  VIDEO_MODE_SPLIT_VERTICAL_REVERSE // 视频上下对齐（rgb上\alpha下）
+};
+
+export enum VAPSpeed {
+  VAP_Speed_1_00_X = 1.0,
+  VAP_Speed_0_50_X = 0.5,
+  VAP_Speed_1_50_X = 1.5,
+  VAP_Speed_2_00_X = 2.0
+};
+
+export interface XComponentContext {
+  play(uri: string, mixData?: Array<MixData>, cbFn?: () => void, id?:string): void
+
+  on(type: string, callback: (state?: VapState | string, ret?: number | AnimConfig | undefined) => void, id?: string): void
+
+  off(type: string, id?:string): void
+
+  pause(id?:string): void
+
+  stop(id?:string): void
+
+  setLoop(loops: number, id?: string): void
+
+  getVideoInfo(uri: string, id?: string): VideoInfo | undefined
+
+  setFitType(fitType: FitType, id?: string): void
+
+  setVideoMode(videoMode: VideoMode, id?: string): void
+
+  setSpeed(speed: VAPSpeed, id?: string): void
+};
+
+export class DownloadData {
+  receiveSize: number = 0;
+  totalSize: number = 0;
+};
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/ets/HttpReq.ets b/ohos/vap/vap_module/src/main/ets/HttpReq.ets
new file mode 100644
index 00000000..cb619f58
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/ets/HttpReq.ets
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { http } from '@kit.NetworkKit';
+import fs from '@ohos.file.fs';
+import { DownloadData } from './DataDeclare'
+
+function extractFileName(url: string): string {
+  // 使用正则表达式匹配 URL 中的文件名部分
+  const matches = url.match(/\/([^\/?#]+)[^\/]*$/);
+  if (matches && matches.length > 1) {
+    return matches[1];
+  }
+  // 如果没有匹配到，则返回空字符串或者你想要的默认值
+  return '';
+}
+
+function startsWithHttp(url: string): boolean {
+  return url.startsWith("http");
+}
+
+function writeFile(filePath: string, buf: ArrayBuffer) {
+  let file = fs.openSync(filePath, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
+  fs.writeSync(file.fd, buf);
+  fs.closeSync(file);
+}
+
+export async function downloadFile(url: string, downloadTimeout: number, dir?: string, callback?: (data: DownloadData) => void) {
+  console.log('enter downloadFile: ' + JSON.stringify(url));
+  if(!startsWithHttp(url)) {
+    return url;
+  }
+  const fileName = extractFileName(url);
+  let filePath = `${getContext().filesDir}/${fileName}`;
+  if(dir) {
+    filePath = dir + '/' + fileName
+  }
+  let res = fs.accessSync(filePath);
+  if (res) {
+    return filePath;
+  }
+
+  let httpRequest = http.createHttp();
+  try {
+    let res = new ArrayBuffer(0);
+    httpRequest.on('dataReceive', (data: ArrayBuffer) => {
+      const newRes = new ArrayBuffer(res.byteLength + data.byteLength);
+      const resView = new Uint8Array(newRes);
+      resView.set(new Uint8Array(res));
+      resView.set(new Uint8Array(data), res.byteLength);
+      res = newRes;
+    });
+
+    httpRequest.on('dataReceiveProgress', (data: DownloadData) => {
+      if (callback) {
+        callback(data);
+      }
+    });
+
+    await httpRequest.requestInStream(url, {
+        method: http.RequestMethod.GET,
+        expectDataType: http.HttpDataType.ARRAY_BUFFER,
+        readTimeout: downloadTimeout,
+      }).then((data: number) => {
+      console.info('ResponseCode :' + JSON.stringify(data));
+      httpRequest.off('dataReceive');
+      httpRequest.off('dataReceiveProgress');
+    })
+    writeFile(filePath, res)
+  } catch (err) {
+    console.error("accessSync failed with error message: " + err.message + ", error code: " + err.code);
+    filePath = ''
+  } finally {
+    httpRequest.destroy();
+  }
+  return filePath
+}
diff --git a/ohos/vap/vap_module/src/main/ets/Index.ets b/ohos/vap/vap_module/src/main/ets/Index.ets
new file mode 100644
index 00000000..f19f92c0
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/ets/Index.ets
@@ -0,0 +1,254 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { util } from '@kit.ArkTS';
+import {
+  AnimConfig,
+  FitType,
+  MixData,
+  SrcInfo,
+  VideoInfo,
+  XComponentContext,
+  VAPColor,
+  VAPTextAlign,
+  VAPFontWeight,
+  DownloadData
+} from './DataDeclare';
+import { LogUtil } from './LogUtil';
+import { downloadFile } from './HttpReq'
+import { systemDateTime } from '@kit.BasicServicesKit';
+
+class MaPosition {
+  public width: number = 200
+  public height: number = 30
+  public top: number = 0
+  public left: number = 0
+}
+
+export class MixInputDataBean implements MixData {
+  tag: string;
+  txt?: string;
+  imgUri?: string;
+  color?: VAPColor
+  fontWeight?: VAPFontWeight
+  textAlign?: VAPTextAlign
+
+  constructor(tag: string) {
+    this.tag = tag
+  }
+}
+
+export class VideoInfoBean implements VideoInfo {
+  srcInfos: SrcInfo[] = [];
+  width: number = 0;
+  height: number = 0;
+}
+;
+
+export class VideoSize {
+  width?: number = undefined;
+  height?: number = undefined;
+}
+;
+
+@Component
+export struct VAPComponent {
+  private vapContext: XComponentContext | null = null;
+  public loops: number = 1;
+  private jsCbfn?: () => void;
+  private uri = ''
+  private mixData: Array<MixData> = new Array
+  private fitType: FitType = FitType.FIT_XY
+  private videoSize: VideoInfoBean = new VideoInfoBean
+  public sandDir = '' // 使用网络资源需要设置该属性
+  public mCmpController: VAPComponentController | null = null;
+  @State isRunning: boolean = false;
+  @State containerWidth: number = 0;
+  @State containerHeight: number = 0
+  @State vapPosition: MaPosition = new MaPosition
+  private downloadTimeout: number = 60000; // ms
+  private downloadCallback: (data: DownloadData) => void = (data: DownloadData) => {};
+
+  aboutToDisappear() {
+    LogUtil.info('[lifeCycle] VAPComponent aboutToDisappear')
+  }
+
+  setFitType(fitType: FitType) {
+    LogUtil.info(' setFitType ' + this.fitType + '  ' + fitType)
+    if (fitType != this.fitType) {
+      this.fitType = fitType
+      this.vapContext?.setFitType(fitType);
+    }
+  }
+
+  aboutToAppear() {
+    LogUtil.info('[lifeCycle] VAPComponent aboutToAppear')
+    if (this.mCmpController) {
+      this.mCmpController.attach(this); // 绑定控制器
+    }
+  }
+
+  setDownloadAttribute(dTime: number, downloadProgress?: (data: DownloadData) => void) {
+    this.downloadTimeout = dTime;
+    if (downloadProgress) {
+      this.downloadCallback = downloadProgress;
+    }
+  }
+
+  async play(uri: string, mixData?: Array<MixData>, cbFn?: () => void) {
+    if (this.isRunning) {
+      return
+    }
+    this.isRunning = true;
+
+    this.uri = await downloadFile(uri, this.downloadTimeout ,this.sandDir, this.downloadCallback)
+    if (mixData) {
+      for (let element of mixData) {
+        if (element.imgUri) {
+          element.imgUri = await downloadFile(element.imgUri, this.downloadTimeout, this.sandDir, this.downloadCallback)
+        }
+        this.mixData.push(element)
+      }
+    }
+
+    this.jsCbfn = cbFn
+    this.vapContext?.play(this.uri, this.mixData, this.doneFn);
+  }
+
+  doneFn = () => {
+    LogUtil.log('enter doneFn loops ' + this.loops)
+    this.isRunning = false;
+    this.loops--;
+    if (this.loops > 0) {
+      this.vapContext?.play(this.uri, this.mixData, this.doneFn);
+      LogUtil.log('loops ' + this.loops)
+    } else {
+      this.loops = 1
+      this.jsCbfn ? this.jsCbfn() : ''
+    }
+  }
+
+  pause() {
+    if (!this.isRunning) {
+      return
+    }
+    this.vapContext?.pause();
+  }
+
+  getVideoInfo(uri: string) {
+    return this.vapContext?.getVideoInfo(uri);
+  }
+
+  stop() {
+    if (!this.isRunning) {
+      return
+    }
+    this.vapContext?.stop();
+    this.loops = 1;
+  }
+
+  setLoop(loops: number): void {
+    this.loops = loops
+  }
+
+  on(type: string, callback: (state?: number | string, ret?: number | AnimConfig) => void) {
+    this.vapContext?.on(type, callback);
+  }
+
+  private fitXy() {
+    this.vapPosition.width = this.containerWidth
+    this.vapPosition.height = this.containerHeight
+    this.vapPosition.top = 0
+    this.vapPosition.left = 0
+  }
+
+  private changeArea() {
+    this.fitXy()
+    LogUtil.log("vapPosition " + JSON.stringify(this.vapPosition))
+  }
+
+  build() {
+    Stack() {
+      XComponent({
+        id: 'XComponentId_' + util.generateRandomUUID(),
+        type: 'surface',
+        libraryname: 'vap'
+      })
+        .onLoad((context?: object) => {
+          if (context) {
+            this.vapContext = context as XComponentContext;
+          }
+        })
+        .backgroundColor(Color.Transparent)
+        .width(this.vapPosition.width)
+        .height(this.vapPosition.height)
+        .visibility(this.isRunning ? Visibility.Visible : Visibility.Hidden)
+        .onAreaChange((old, new1) => {
+          LogUtil.info('XComponent onAreaChange newWidth ' + old.width + ' newHeight ' + old.height +
+            ' width ' + new1.width + ' height ' + new1.height)
+        })
+    }
+    .height('100%')
+    .width('100%')
+    .onAreaChange((old, new1) => {
+      LogUtil.info('onAreaChange newWidth ' + old.width + ' newHeight ' + old.height +
+        ' width ' + new1.width + ' height ' + new1.height)
+      this.containerWidth = new1.width as number
+      this.containerHeight = new1.height as number
+      if (this.videoSize) {
+        this.changeArea()
+      }
+    })
+  }
+}
+
+export class VAPComponentController {
+  private mComponent: VAPComponent | null = null;
+
+  attach(component: VAPComponent) {
+    this.mComponent = component;
+  }
+
+  play(uri: string, mixData?: Array<MixData>, cbFn?: () => void): void {
+    if (this.mComponent) {
+      this.mComponent.play(uri, mixData, cbFn);
+    }
+  }
+
+  pause(): void {
+    if (this.mComponent) {
+      return this.mComponent.pause();
+    }
+  }
+
+  stop(): void {
+    if (this.mComponent) {
+      return this.mComponent.stop();
+    }
+  }
+
+  setFitType(fitType: FitType): void {
+    if (this.mComponent) {
+      return this.mComponent.setFitType(fitType);
+    }
+  }
+
+  getVideoInfo(uri: string): VideoInfo | undefined {
+    if (this.mComponent) {
+      return this.mComponent.getVideoInfo(uri);
+    }
+    return undefined
+  }
+}
diff --git a/ohos/vap/vap_module/src/main/ets/LogUtil.ets b/ohos/vap/vap_module/src/main/ets/LogUtil.ets
new file mode 100644
index 00000000..8eefae7b
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/ets/LogUtil.ets
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export class LogUtil {
+  public static OFF: number = 1
+  public static LOG: number = 2
+  public static DEBUG: number = 3
+  public static INFO: number = 4
+  public static WARN: number = 5
+  public static ERROR: number = 6
+  public static ALL: number = 7
+  public static mLogLevel:number = LogUtil.ALL;
+
+  public static debug(message: string, ...args: Object[]) {
+    if (LogUtil.mLogLevel >= LogUtil.DEBUG) {
+      console.debug(message, args)
+    }
+  }
+
+  public static info(message: string, ...args: Object[]) {
+    if (LogUtil.mLogLevel >= LogUtil.INFO) {
+      console.info(message, args)
+    }
+  }
+
+  public static log(message: string, ...args: Object[]) {
+    if (LogUtil.mLogLevel >= LogUtil.LOG) {
+      console.log(message, args)
+    }
+  }
+
+  public static warn(message: string, ...args: Object[]) {
+    if (LogUtil.mLogLevel >= LogUtil.WARN) {
+      console.warn(message, args)
+    }
+  }
+
+  // error 不做拦截
+  public static error(message: string, ...args: Object[]) {
+    if(LogUtil.mLogLevel >= LogUtil.ERROR) {
+      console.error(message, args)
+    }
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/ets/VAPPlayer.ets b/ohos/vap/vap_module/src/main/ets/VAPPlayer.ets
new file mode 100644
index 00000000..492df895
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/ets/VAPPlayer.ets
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { AnimConfig, FitType, MixData,
+  VAPSpeed,
+  VapState, VideoInfo, VideoMode, XComponentContext, DownloadData } from './DataDeclare';
+
+import { downloadFile } from './HttpReq';
+
+export class VAPPlayer implements XComponentContext {
+  private vapContext: XComponentContext | null = null;
+  private loops: number = 1;
+  private jsCbfn?: () => void;
+  private uri = ''
+  private mixData: Array<MixData> = []
+  public sandDir = ''
+  private id: string = ''
+  private downloadTimeout: number = 60000; // ms
+  private downloadCallback: (data: DownloadData) => void = (data: DownloadData) => {};
+
+  constructor(id: string) {
+    this.id = id
+  }
+
+  setContext(context: object): void {
+    this.vapContext = context as XComponentContext;
+  }
+
+  getVideoInfo(uri: string): VideoInfo | undefined {
+    if (this.vapContext) {
+      return this.vapContext.getVideoInfo(uri, this.id);
+    }
+    return undefined
+  }
+
+  doneFn = () => {
+    console.log('enter doneFn loops ' + this.loops)
+    this.loops--;
+    if (this.loops > 0) {
+      this.vapContext?.play(this.uri, this.mixData, this.doneFn, this.id);
+      console.log('loops ' + this.loops)
+    } else {
+      this.loops = 1
+      this.jsCbfn ? this.jsCbfn() : ''
+    }
+  }
+
+  setDownloadAttribute(dTime: number, downloadProgress?: (data: DownloadData) => void) {
+    this.downloadTimeout = dTime;
+    if (downloadProgress) {
+      this.downloadCallback = downloadProgress;
+    }
+  }
+
+  async play(uri: string, mixData?: Array<MixData>, cbFn?: () => void): Promise<void> {
+    if (mixData) {
+      this.mixData = []
+      for (let element of mixData) {
+        if (element.imgUri) {
+          element.imgUri = await downloadFile(element.imgUri, this.downloadTimeout, this.sandDir, this.downloadCallback)
+        }
+        this.mixData.push(element)
+      }
+    }
+    this.uri = await downloadFile(uri, this.downloadTimeout, this.sandDir, this.downloadCallback)
+
+    this.jsCbfn = cbFn
+    console.log('mPlayOption ' + JSON.stringify(this.mixData))
+    this.vapContext?.play(this.uri, this.mixData, this.doneFn, this.id);
+  }
+
+  on(type: string, callback: (state?: VapState | string, ret?: number | AnimConfig | undefined) => void) {
+    this.vapContext?.on(type, callback, this.id);
+  }
+
+  off(type: string) {
+    this.vapContext?.off(type, this.id)
+  }
+
+  pause(): void {
+    this.vapContext?.pause(this.id);
+  }
+
+  stop(): void {
+    this.vapContext?.stop(this.id);
+    this.loops = 1;
+  }
+
+  setLoop(loops: number): void {
+    this.loops = loops
+  }
+
+  setFitType(fitType: FitType): void {
+    this.vapContext?.setFitType(fitType, this.id);
+  }
+
+  setVideoMode(videoMode: VideoMode): void {
+    this.vapContext?.setVideoMode(videoMode, this.id);
+  }
+
+  setSpeed(speed: VAPSpeed): void {
+    this.vapContext?.setSpeed(speed, this.id);
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/main/module.json5 b/ohos/vap/vap_module/src/main/module.json5
new file mode 100644
index 00000000..fd909113
--- /dev/null
+++ b/ohos/vap/vap_module/src/main/module.json5
@@ -0,0 +1,10 @@
+{
+  "module": {
+    "name": "vap_module",
+    "type": "har",
+    "deviceTypes": [
+      "default",
+      "tablet"
+    ]
+  }
+}
diff --git a/ohos/vap/vap_module/src/mock/mock-config.json5 b/ohos/vap/vap_module/src/mock/mock-config.json5
new file mode 100644
index 00000000..7a73a41b
--- /dev/null
+++ b/ohos/vap/vap_module/src/mock/mock-config.json5
@@ -0,0 +1,2 @@
+{
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/ohosTest/ets/test/Ability.test.ets b/ohos/vap/vap_module/src/ohosTest/ets/test/Ability.test.ets
new file mode 100644
index 00000000..6dc294a2
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/ets/test/Ability.test.ets
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import { hilog } from '@kit.PerformanceAnalysisKit';
+import { describe, beforeAll, beforeEach, afterEach, afterAll, it, expect } from '@ohos/hypium';
+
+export default function abilityTest() {
+  describe('ActsAbilityTest', () => {
+    // Defines a test suite. Two parameters are supported: test suite name and test suite function.
+    beforeAll(() => {
+      // Presets an action, which is performed only once before all test cases of the test suite start.
+      // This API supports only one parameter: preset action function.
+    })
+    beforeEach(() => {
+      // Presets an action, which is performed before each unit test case starts.
+      // The number of execution times is the same as the number of test cases defined by **it**.
+      // This API supports only one parameter: preset action function.
+    })
+    afterEach(() => {
+      // Presets a clear action, which is performed after each unit test case ends.
+      // The number of execution times is the same as the number of test cases defined by **it**.
+      // This API supports only one parameter: clear action function.
+    })
+    afterAll(() => {
+      // Presets a clear action, which is performed after all test cases of the test suite end.
+      // This API supports only one parameter: clear action function.
+    })
+    it('assertContain', 0, () => {
+      // Defines a test case. This API supports three parameters: test case name, filter parameter, and test case function.
+      hilog.info(0x0000, 'testTag', '%{public}s', 'it begin');
+      let a = 'abc';
+      let b = 'b';
+      // Defines a variety of assertion methods, which are used to declare expected boolean conditions.
+      expect(a).assertContain(b);
+      expect(a).assertEqual(a);
+    })
+  })
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/ohosTest/ets/test/List.test.ets b/ohos/vap/vap_module/src/ohosTest/ets/test/List.test.ets
new file mode 100644
index 00000000..727717b2
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/ets/test/List.test.ets
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import abilityTest from './Ability.test';
+
+export default function testsuite() {
+  abilityTest();
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/ohosTest/ets/testability/TestAbility.ets b/ohos/vap/vap_module/src/ohosTest/ets/testability/TestAbility.ets
new file mode 100644
index 00000000..034d57ea
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/ets/testability/TestAbility.ets
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import { AbilityConstant, UIAbility, Want } from '@kit.AbilityKit';
+import { abilityDelegatorRegistry } from '@kit.TestKit';
+import { hilog } from '@kit.PerformanceAnalysisKit';
+import { window } from '@kit.ArkUI';
+import { Hypium } from '@ohos/hypium';
+import testsuite from '../test/List.test';
+
+export default class TestAbility extends UIAbility {
+  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onCreate');
+    hilog.info(0x0000, 'testTag', '%{public}s', 'want param:' + JSON.stringify(want) ?? '');
+    hilog.info(0x0000, 'testTag', '%{public}s', 'launchParam:' + JSON.stringify(launchParam) ?? '');
+    let abilityDelegator: abilityDelegatorRegistry.AbilityDelegator;
+    abilityDelegator = abilityDelegatorRegistry.getAbilityDelegator();
+    let abilityDelegatorArguments: abilityDelegatorRegistry.AbilityDelegatorArgs;
+    abilityDelegatorArguments = abilityDelegatorRegistry.getArguments();
+    hilog.info(0x0000, 'testTag', '%{public}s', 'start run testcase!!!');
+    Hypium.hypiumTest(abilityDelegator, abilityDelegatorArguments, testsuite);
+  }
+
+  onDestroy() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onDestroy');
+  }
+
+  onWindowStageCreate(windowStage: window.WindowStage) {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onWindowStageCreate');
+    windowStage.loadContent('testability/pages/Index', (err) => {
+      if (err.code) {
+        hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? '');
+        return;
+      }
+      hilog.info(0x0000, 'testTag', 'Succeeded in loading the content.');
+    });
+  }
+
+  onWindowStageDestroy() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onWindowStageDestroy');
+  }
+
+  onForeground() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onForeground');
+  }
+
+  onBackground() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'TestAbility onBackground');
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/ohosTest/ets/testability/pages/Index.ets b/ohos/vap/vap_module/src/ohosTest/ets/testability/pages/Index.ets
new file mode 100644
index 00000000..aac91d9e
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/ets/testability/pages/Index.ets
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+@Entry
+@Component
+struct Index {
+  @State message: string = 'Hello World';
+
+  build() {
+    Row() {
+      Column() {
+        Text(this.message)
+          .fontSize(50)
+          .fontWeight(FontWeight.Bold)
+      }
+      .width('100%')
+    }
+    .height('100%')
+  }
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/ohosTest/ets/testrunner/OpenHarmonyTestRunner.ets b/ohos/vap/vap_module/src/ohosTest/ets/testrunner/OpenHarmonyTestRunner.ets
new file mode 100644
index 00000000..58ec2e2e
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/ets/testrunner/OpenHarmonyTestRunner.ets
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { abilityDelegatorRegistry, TestRunner } from '@kit.TestKit';
+import { UIAbility, Want } from '@kit.AbilityKit';
+import { BusinessError } from '@kit.BasicServicesKit';
+import { hilog } from '@kit.PerformanceAnalysisKit';
+import { resourceManager } from '@kit.LocalizationKit';
+import { util } from '@kit.ArkTS';
+
+let abilityDelegator: abilityDelegatorRegistry.AbilityDelegator;
+let abilityDelegatorArguments: abilityDelegatorRegistry.AbilityDelegatorArgs;
+let jsonPath: string = 'mock/mock-config.json';
+let tag: string = 'testTag';
+
+async function onAbilityCreateCallback(data: UIAbility) {
+  hilog.info(0x0000, 'testTag', 'onAbilityCreateCallback, data: ${}', JSON.stringify(data));
+}
+
+async function addAbilityMonitorCallback(err: BusinessError) {
+  hilog.info(0x0000, 'testTag', 'addAbilityMonitorCallback : %{public}s', JSON.stringify(err) ?? '');
+}
+
+export default class OpenHarmonyTestRunner implements TestRunner {
+  constructor() {
+  }
+
+  onPrepare() {
+    hilog.info(0x0000, 'testTag', '%{public}s', 'OpenHarmonyTestRunner OnPrepare');
+  }
+
+  async onRun() {
+    let tag = 'testTag';
+    hilog.info(0x0000, tag, '%{public}s', 'OpenHarmonyTestRunner onRun run');
+    abilityDelegatorArguments = abilityDelegatorRegistry.getArguments()
+    abilityDelegator = abilityDelegatorRegistry.getAbilityDelegator()
+    let moduleName = abilityDelegatorArguments.parameters['-m'];
+    let context = abilityDelegator.getAppContext().getApplicationContext().createModuleContext(moduleName);
+    let mResourceManager = context.resourceManager;
+    await checkMock(abilityDelegator, mResourceManager);
+    const bundleName = abilityDelegatorArguments.bundleName;
+    const testAbilityName: string = 'TestAbility';
+    let lMonitor: abilityDelegatorRegistry.AbilityMonitor = {
+      abilityName: testAbilityName,
+      onAbilityCreate: onAbilityCreateCallback,
+      moduleName: moduleName
+    };
+    abilityDelegator.addAbilityMonitor(lMonitor, addAbilityMonitorCallback)
+    const want: Want = {
+      bundleName: bundleName,
+      abilityName: testAbilityName,
+      moduleName: moduleName
+    };
+    abilityDelegator.startAbility(want, (err: BusinessError, data: void) => {
+      hilog.info(0x0000, tag, 'startAbility : err : %{public}s', JSON.stringify(err) ?? '');
+      hilog.info(0x0000, tag, 'startAbility : data : %{public}s', JSON.stringify(data) ?? '');
+    })
+    hilog.info(0x0000, tag, '%{public}s', 'OpenHarmonyTestRunner onRun end');
+  }
+}
+
+async function checkMock(abilityDelegator: abilityDelegatorRegistry.AbilityDelegator, resourceManager: resourceManager.ResourceManager) {
+  let rawFile: Uint8Array;
+  try {
+    rawFile = resourceManager.getRawFileContentSync(jsonPath);
+    hilog.info(0x0000, tag, 'MockList file exists');
+    let mockStr: string = util.TextDecoder.create('utf-8', { ignoreBOM: true }).decodeWithStream(rawFile);
+    let mockMap: Record<string, string> = getMockList(mockStr);
+    try {
+      abilityDelegator.setMockList(mockMap)
+    } catch (error) {
+      let code = (error as BusinessError).code;
+      let message = (error as BusinessError).message;
+      hilog.error(0x0000, tag, `abilityDelegator.setMockList failed, error code: ${code}, message: ${message}.`);
+    }
+  } catch (error) {
+    let code = (error as BusinessError).code;
+    let message = (error as BusinessError).message;
+    hilog.error(0x0000, tag, `ResourceManager:callback getRawFileContent failed, error code: ${code}, message: ${message}.`);
+  }
+}
+
+function getMockList(jsonStr: string) {
+  let jsonObj: Record<string, Object> = JSON.parse(jsonStr);
+  let map: Map<string, object> = new Map<string, object>(Object.entries(jsonObj));
+  let mockList: Record<string, string> = {};
+  map.forEach((value: object, key: string) => {
+    let realValue: string = value['source'].toString();
+    mockList[key] = realValue;
+  });
+  hilog.info(0x0000, tag, '%{public}s', 'mock-json value:' + JSON.stringify(mockList) ?? '');
+  return mockList;
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/ohosTest/module.json5 b/ohos/vap/vap_module/src/ohosTest/module.json5
new file mode 100644
index 00000000..4fc97017
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/module.json5
@@ -0,0 +1,37 @@
+{
+  "module": {
+    "name": "entry_test",
+    "type": "feature",
+    "description": "$string:module_test_desc",
+    "mainElement": "TestAbility",
+    "deviceTypes": [
+      "default",
+      "tablet"
+    ],
+    "deliveryWithInstall": true,
+    "installationFree": false,
+    "pages": "$profile:test_pages",
+    "abilities": [
+      {
+        "name": "TestAbility",
+        "srcEntry": "./ets/testability/TestAbility.ets",
+        "description": "$string:TestAbility_desc",
+        "icon": "$media:icon",
+        "label": "$string:TestAbility_label",
+        "exported": true,
+        "startWindowIcon": "$media:icon",
+        "startWindowBackground": "$color:start_window_background",
+        "skills": [
+          {
+            "actions": [
+              "action.system.home"
+            ],
+            "entities": [
+              "entity.system.home"
+            ]
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/ohos/vap/vap_module/src/ohosTest/resources/base/element/color.json b/ohos/vap/vap_module/src/ohosTest/resources/base/element/color.json
new file mode 100644
index 00000000..3c712962
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/resources/base/element/color.json
@@ -0,0 +1,8 @@
+{
+  "color": [
+    {
+      "name": "start_window_background",
+      "value": "#FFFFFF"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/ohosTest/resources/base/element/string.json b/ohos/vap/vap_module/src/ohosTest/resources/base/element/string.json
new file mode 100644
index 00000000..65d8fa5a
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/resources/base/element/string.json
@@ -0,0 +1,16 @@
+{
+  "string": [
+    {
+      "name": "module_test_desc",
+      "value": "test ability description"
+    },
+    {
+      "name": "TestAbility_desc",
+      "value": "the test ability"
+    },
+    {
+      "name": "TestAbility_label",
+      "value": "test label"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/ohosTest/resources/base/media/icon.png b/ohos/vap/vap_module/src/ohosTest/resources/base/media/icon.png
new file mode 100644
index 00000000..a39445dc
Binary files /dev/null and b/ohos/vap/vap_module/src/ohosTest/resources/base/media/icon.png differ
diff --git a/ohos/vap/vap_module/src/ohosTest/resources/base/profile/test_pages.json b/ohos/vap/vap_module/src/ohosTest/resources/base/profile/test_pages.json
new file mode 100644
index 00000000..b7e7343c
--- /dev/null
+++ b/ohos/vap/vap_module/src/ohosTest/resources/base/profile/test_pages.json
@@ -0,0 +1,5 @@
+{
+  "src": [
+    "testability/pages/Index"
+  ]
+}
diff --git a/ohos/vap/vap_module/src/test/List.test.ets b/ohos/vap/vap_module/src/test/List.test.ets
new file mode 100644
index 00000000..26cef74f
--- /dev/null
+++ b/ohos/vap/vap_module/src/test/List.test.ets
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import localUnitTest from './LocalUnit.test';
+
+export default function testsuite() {
+  localUnitTest();
+}
\ No newline at end of file
diff --git a/ohos/vap/vap_module/src/test/LocalUnit.test.ets b/ohos/vap/vap_module/src/test/LocalUnit.test.ets
new file mode 100644
index 00000000..afefcbf6
--- /dev/null
+++ b/ohos/vap/vap_module/src/test/LocalUnit.test.ets
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2023 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import { describe, beforeAll, beforeEach, afterEach, afterAll, it, expect } from '@ohos/hypium';
+
+export default function localUnitTest() {
+  describe('localUnitTest', () => {
+    // Defines a test suite. Two parameters are supported: test suite name and test suite function.
+    beforeAll(() => {
+      // Presets an action, which is performed only once before all test cases of the test suite start.
+      // This API supports only one parameter: preset action function.
+    });
+    beforeEach(() => {
+      // Presets an action, which is performed before each unit test case starts.
+      // The number of execution times is the same as the number of test cases defined by **it**.
+      // This API supports only one parameter: preset action function.
+    });
+    afterEach(() => {
+      // Presets a clear action, which is performed after each unit test case ends.
+      // The number of execution times is the same as the number of test cases defined by **it**.
+      // This API supports only one parameter: clear action function.
+    });
+    afterAll(() => {
+      // Presets a clear action, which is performed after all test cases of the test suite end.
+      // This API supports only one parameter: clear action function.
+    });
+    it('assertContain', 0, () => {
+      // Defines a test case. This API supports three parameters: test case name, filter parameter, and test case function.
+      let a = 'abc';
+      let b = 'b';
+      // Defines a variety of assertion methods, which are used to declare expected boolean conditions.
+      expect(a).assertContain(b);
+      expect(a).assertEqual(a);
+    });
+  });
+}
\ No newline at end of file
diff --git "a/ohos/vap/\347\244\272\344\276\213\344\273\243\347\240\201.ets" "b/ohos/vap/\347\244\272\344\276\213\344\273\243\347\240\201.ets"
new file mode 100644
index 00000000..b3fc3bad
--- /dev/null
+++ "b/ohos/vap/\347\244\272\344\276\213\344\273\243\347\240\201.ets"
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { MixData, MixInputData, VAPPlayer } from '@ohos/vap';
+import { systemDateTime } from '@kit.BasicServicesKit';
+import { LogUtil } from '../common/LogUtil';
+import { util } from '@kit.ArkTS';
+import { VAPComponent, FitType } from '@ohos/vap';
+
+@Entry
+@Component
+struct VAPXAnimation {
+  private vapPlayer: VAPPlayer | undefined = undefined;
+  @State buttonEnabled: boolean = true;
+  @State fitType: FitType = FitType.FIT_CENTER;
+  private playTimes: number = 0;
+  private stopTimes: number = 0;
+  private pauseTimes: number = 0;
+
+  aboutToDisappear(): void {
+    LogUtil.info('aboutToDisappear')
+  }
+
+  onPageShow(): void {
+    LogUtil.info('onPageShow')
+  }
+
+  onPageHide(): void {
+    LogUtil.info('onPageHide')
+    this.vapPlayer?.stop()
+  }
+
+  play() {
+    this.vapPlayer?.setFitType(this.fitType)
+    try {
+      let opts: Array<MixData> = [{
+        srcId: 2,
+        imgUri: getContext(this).filesDir + '/head1.png'
+      },{
+        srcId: 0,
+        txt: "星河Harmony NEXT",
+        imgUri: getContext(this).filesDir + '/head1.png'
+      },{
+        srcId: 1,
+        txt: "星河Harmony NEXT",
+      }];
+      this.buttonEnabled = false;
+
+      let startTime = systemDateTime.getTime(true)
+
+      this.vapPlayer?.play(getContext(this).filesDir + "/vapx.mp4", opts, () => {
+        LogUtil.info("js get callback")
+        this.buttonEnabled = true;
+      });
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.playTimes + " play cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.playTimes + " play error " + JSON.stringify(e));
+    }
+    this.playTimes++;
+  }
+
+  pause() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.vapPlayer?.pause();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.pauseTimes + " pause cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.pauseTimes + " pause error " + JSON.stringify(e));
+    }
+    this.pauseTimes++;
+  }
+
+  stop() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.vapPlayer?.stop();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.stopTimes + " stop cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.stopTimes + " stop error " + JSON.stringify(e));
+    }
+    this.stopTimes++;
+  }
+
+  build() {
+    Column() {
+      Stack() {
+        XComponent({
+          id: 'xcomponentId_'+util.generateRandomUUID(),
+          type: 'surface',
+          libraryname: 'vap'
+        }).onLoad((context?: object) => {
+          if (context) {
+            this.vapPlayer = new VAPPlayer;
+            this.vapPlayer.setContext(context);
+          }
+        }) .backgroundColor(Color.Transparent)
+          .width('100%')
+          .height('100%')
+          .visibility(this.buttonEnabled ? Visibility.Hidden : Visibility.Visible)
+      }.backgroundImage($r('app.media.bg'))
+      .backgroundImageSize(ImageSize.FILL)
+      .height('90%')
+      .width('100%')
+
+      Row() {
+        Select([{value: 'fix_xy'}, {value: 'fix_center'}, {value: 'center_crop'}])
+          .selected(1)
+          .onSelect((index: number) => {
+            console.info('Select: ' + index)
+            this.fitType = index
+            // this.mVAPComponentController.setFitType(this.fitType)
+          })
+        Button('Play')
+          .fontWeight(500)
+          .onClick(() => {
+            this.play()
+          })
+          .width('200')
+          .enabled(this.buttonEnabled)
+        Button('pause')
+          .onClick(() => {
+            this.pause()
+          })
+        Button('stop')
+          .onClick(() => {
+            this.stop()
+          })
+      }
+      .margin({ top: 15 })
+      .width('100%')
+      .justifyContent(FlexAlign.SpaceAround)
+      .alignItems(VerticalAlign.Bottom)
+    }
+  }
+}
\ No newline at end of file
diff --git "a/ohos/vap/\347\273\204\344\273\266\346\250\241\345\274\217.ets" "b/ohos/vap/\347\273\204\344\273\266\346\250\241\345\274\217.ets"
new file mode 100644
index 00000000..390f4b56
--- /dev/null
+++ "b/ohos/vap/\347\273\204\344\273\266\346\250\241\345\274\217.ets"
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { MixInputData } from '@ohos/vap';
+import { systemDateTime } from '@kit.BasicServicesKit';
+import { LogUtil } from '../common/LogUtil';
+import { util } from '@kit.ArkTS';
+import { VAPComponentController } from '@ohos/vap';
+import { VAPComponent, FitType } from '@ohos/vap';
+import { MixData } from '@ohos/vap';
+
+@Entry
+@Component
+struct GeneralAnimation {
+  @State buttonEnabled: boolean = true;
+  @State fitType: FitType = FitType.FIT_CENTER;
+
+  private mVAPComponentController: VAPComponentController = new VAPComponentController();
+  private playTimes: number = 0;
+  private stopTimes: number = 0;
+  private pauseTimes: number = 0;
+
+  aboutToDisappear(): void {
+    LogUtil.info('aboutToDisappear')
+  }
+
+  onPageShow(): void {
+    LogUtil.info('onPageShow')
+  }
+
+  onPageHide(): void {
+    LogUtil.info('onPageHide')
+    this.mVAPComponentController.stop()
+  }
+
+  play() {
+    this.mVAPComponentController.setFitType(this.fitType)
+    LogUtil.info("js setFitType")
+    // return
+    try {
+      let opts: Array<MixData> = [{
+        srcId: 2,
+        imgUri: getContext(this).filesDir + '/head1.png'
+      },{
+        srcId: 0,
+        txt: "星河Harmony NEXT",
+        imgUri: getContext(this).filesDir + '/head1.png'
+      },{
+        srcId: 1,
+        txt: "星河Harmony NEXT",
+      }];
+      this.buttonEnabled = false;
+
+      let startTime = systemDateTime.getTime(true)
+
+      this.mVAPComponentController?.play(getContext(this).filesDir + "/vapx.mp4", opts, () => {
+        LogUtil.info("js get callback")
+        this.buttonEnabled = true;
+      });
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.playTimes + " play cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.playTimes + " play error " + JSON.stringify(e));
+    }
+    this.playTimes++;
+  }
+
+  pause() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.mVAPComponentController?.pause();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.pauseTimes + " pause cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.pauseTimes + " pause error " + JSON.stringify(e));
+    }
+    this.pauseTimes++;
+  }
+
+  stop() {
+    try {
+      let startTime = systemDateTime.getTime(true);
+      this.mVAPComponentController?.stop();
+      let endTime = systemDateTime.getTime(true)
+      LogUtil.info(this.stopTimes + " stop cost " + (endTime - startTime) / 1000)
+    } catch (e) {
+      LogUtil.error(this.stopTimes + " stop error " + JSON.stringify(e));
+    }
+    this.stopTimes++;
+  }
+
+  build() {
+    Column() {
+      Stack() {
+        VAPComponent({ mCmpController: this.mVAPComponentController })
+          .width('100%')
+          .height('100%')
+
+        Row() {
+          Select([{value: 'fix_xy'}, {value: 'fix_center'}, {value: 'center_crop'}])
+            .selected(1)
+            .onSelect((index: number) => {
+              console.info('Select: ' + index)
+              this.fitType = index
+              // this.mVAPComponentController.setFitType(this.fitType)
+            })
+          Button('Play')
+            .fontWeight(500)
+            .onClick(() => {
+              this.play()
+            })
+            .width('200')
+            .enabled(this.buttonEnabled)
+          Button('pause')
+            .onClick(() => {
+              this.pause()
+            })
+          Button('stop')
+            .onClick(() => {
+              this.stop()
+            })
+        }
+        .width('100%')
+        .justifyContent(FlexAlign.SpaceAround)
+        .alignItems(VerticalAlign.Bottom)
+      }
+      .backgroundImage($r('app.media.bg'))
+      .backgroundImageSize(ImageSize.FILL)
+      .alignContent(Alignment.Bottom)
+      .height('100%')
+      .width('100%')
+    }
+    .height('100%')
+    .width('100%')
+  }
+}
\ No newline at end of file